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1
/*
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 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
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 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
8
 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
21

    
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/**
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 * @file h264.c
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 * H.264 / AVC / MPEG4 part10 codec.
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 * @author Michael Niedermayer <michaelni@gmx.at>
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 */
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#include "dsputil.h"
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#include "avcodec.h"
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#include "mpegvideo.h"
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#include "h264.h"
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#include "h264data.h"
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#include "h264_parser.h"
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#include "golomb.h"
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#include "rectangle.h"
36

    
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#include "cabac.h"
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#ifdef ARCH_X86
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#include "i386/h264_i386.h"
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#endif
41

    
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//#undef NDEBUG
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#include <assert.h>
44

    
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/**
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 * Value of Picture.reference when Picture is not a reference picture, but
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 * is held for delayed output.
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 */
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#define DELAYED_PIC_REF 4
50

    
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static VLC coeff_token_vlc[4];
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static VLC_TYPE coeff_token_vlc_tables[520+332+280+256][2];
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static const int coeff_token_vlc_tables_size[4]={520,332,280,256};
54

    
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static VLC chroma_dc_coeff_token_vlc;
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static VLC_TYPE chroma_dc_coeff_token_vlc_table[256][2];
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static const int chroma_dc_coeff_token_vlc_table_size = 256;
58

    
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static VLC total_zeros_vlc[15];
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static VLC_TYPE total_zeros_vlc_tables[15][512][2];
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static const int total_zeros_vlc_tables_size = 512;
62

    
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static VLC chroma_dc_total_zeros_vlc[3];
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static VLC_TYPE chroma_dc_total_zeros_vlc_tables[3][8][2];
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static const int chroma_dc_total_zeros_vlc_tables_size = 8;
66

    
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static VLC run_vlc[6];
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static VLC_TYPE run_vlc_tables[6][8][2];
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static const int run_vlc_tables_size = 8;
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static VLC run7_vlc;
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static VLC_TYPE run7_vlc_table[96][2];
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static const int run7_vlc_table_size = 96;
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static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp);
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static void svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp, int dc);
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static void filter_mb( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize);
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static void filter_mb_fast( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize);
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static Picture * remove_long(H264Context *h, int i, int ref_mask);
80

    
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static av_always_inline uint32_t pack16to32(int a, int b){
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#ifdef WORDS_BIGENDIAN
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   return (b&0xFFFF) + (a<<16);
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#else
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   return (a&0xFFFF) + (b<<16);
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#endif
87
}
88

    
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static const uint8_t rem6[52]={
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0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3,
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};
92

    
93
static const uint8_t div6[52]={
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0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
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};
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static const int left_block_options[4][8]={
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    {0,1,2,3,7,10,8,11},
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    {2,2,3,3,8,11,8,11},
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    {0,0,1,1,7,10,7,10},
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    {0,2,0,2,7,10,7,10}
102
};
103

    
104
static void fill_caches(H264Context *h, int mb_type, int for_deblock){
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    MpegEncContext * const s = &h->s;
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    const int mb_xy= h->mb_xy;
107
    int topleft_xy, top_xy, topright_xy, left_xy[2];
108
    int topleft_type, top_type, topright_type, left_type[2];
109
    const int * left_block;
110
    int topleft_partition= -1;
111
    int i;
112

    
113
    top_xy     = mb_xy  - (s->mb_stride << FIELD_PICTURE);
114

    
115
    //FIXME deblocking could skip the intra and nnz parts.
116
    if(for_deblock && (h->slice_num == 1 || h->slice_table[mb_xy] == h->slice_table[top_xy]) && !FRAME_MBAFF)
117
        return;
118

    
119
    /* Wow, what a mess, why didn't they simplify the interlacing & intra
120
     * stuff, I can't imagine that these complex rules are worth it. */
121

    
122
    topleft_xy = top_xy - 1;
123
    topright_xy= top_xy + 1;
124
    left_xy[1] = left_xy[0] = mb_xy-1;
125
    left_block = left_block_options[0];
126
    if(FRAME_MBAFF){
127
        const int pair_xy          = s->mb_x     + (s->mb_y & ~1)*s->mb_stride;
128
        const int top_pair_xy      = pair_xy     - s->mb_stride;
129
        const int topleft_pair_xy  = top_pair_xy - 1;
130
        const int topright_pair_xy = top_pair_xy + 1;
131
        const int topleft_mb_frame_flag  = !IS_INTERLACED(s->current_picture.mb_type[topleft_pair_xy]);
132
        const int top_mb_frame_flag      = !IS_INTERLACED(s->current_picture.mb_type[top_pair_xy]);
133
        const int topright_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[topright_pair_xy]);
134
        const int left_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[pair_xy-1]);
135
        const int curr_mb_frame_flag = !IS_INTERLACED(mb_type);
136
        const int bottom = (s->mb_y & 1);
137
        tprintf(s->avctx, "fill_caches: curr_mb_frame_flag:%d, left_mb_frame_flag:%d, topleft_mb_frame_flag:%d, top_mb_frame_flag:%d, topright_mb_frame_flag:%d\n", curr_mb_frame_flag, left_mb_frame_flag, topleft_mb_frame_flag, top_mb_frame_flag, topright_mb_frame_flag);
138
        if (bottom
139
                ? !curr_mb_frame_flag // bottom macroblock
140
                : (!curr_mb_frame_flag && !top_mb_frame_flag) // top macroblock
141
                ) {
142
            top_xy -= s->mb_stride;
143
        }
144
        if (bottom
145
                ? !curr_mb_frame_flag // bottom macroblock
146
                : (!curr_mb_frame_flag && !topleft_mb_frame_flag) // top macroblock
147
                ) {
148
            topleft_xy -= s->mb_stride;
149
        } else if(bottom && curr_mb_frame_flag && !left_mb_frame_flag) {
150
            topleft_xy += s->mb_stride;
151
            // take top left mv from the middle of the mb, as opposed to all other modes which use the bottom right partition
152
            topleft_partition = 0;
153
        }
154
        if (bottom
155
                ? !curr_mb_frame_flag // bottom macroblock
156
                : (!curr_mb_frame_flag && !topright_mb_frame_flag) // top macroblock
157
                ) {
158
            topright_xy -= s->mb_stride;
159
        }
160
        if (left_mb_frame_flag != curr_mb_frame_flag) {
161
            left_xy[1] = left_xy[0] = pair_xy - 1;
162
            if (curr_mb_frame_flag) {
163
                if (bottom) {
164
                    left_block = left_block_options[1];
165
                } else {
166
                    left_block= left_block_options[2];
167
                }
168
            } else {
169
                left_xy[1] += s->mb_stride;
170
                left_block = left_block_options[3];
171
            }
172
        }
173
    }
174

    
175
    h->top_mb_xy = top_xy;
176
    h->left_mb_xy[0] = left_xy[0];
177
    h->left_mb_xy[1] = left_xy[1];
178
    if(for_deblock){
179
        topleft_type = 0;
180
        topright_type = 0;
181
        top_type     = h->slice_table[top_xy     ] < 0xFFFF ? s->current_picture.mb_type[top_xy]     : 0;
182
        left_type[0] = h->slice_table[left_xy[0] ] < 0xFFFF ? s->current_picture.mb_type[left_xy[0]] : 0;
183
        left_type[1] = h->slice_table[left_xy[1] ] < 0xFFFF ? s->current_picture.mb_type[left_xy[1]] : 0;
184

    
185
        if(MB_MBAFF && !IS_INTRA(mb_type)){
186
            int list;
187
            for(list=0; list<h->list_count; list++){
188
                //These values where changed for ease of performing MC, we need to change them back
189
                //FIXME maybe we can make MC and loop filter use the same values or prevent
190
                //the MC code from changing ref_cache and rather use a temporary array.
191
                if(USES_LIST(mb_type,list)){
192
                    int8_t *ref = &s->current_picture.ref_index[list][h->mb2b8_xy[mb_xy]];
193
                    *(uint32_t*)&h->ref_cache[list][scan8[ 0]] =
194
                    *(uint32_t*)&h->ref_cache[list][scan8[ 2]] = (pack16to32(ref[0],ref[1])&0x00FF00FF)*0x0101;
195
                    ref += h->b8_stride;
196
                    *(uint32_t*)&h->ref_cache[list][scan8[ 8]] =
197
                    *(uint32_t*)&h->ref_cache[list][scan8[10]] = (pack16to32(ref[0],ref[1])&0x00FF00FF)*0x0101;
198
                }
199
            }
200
        }
201
    }else{
202
        topleft_type = h->slice_table[topleft_xy ] == h->slice_num ? s->current_picture.mb_type[topleft_xy] : 0;
203
        top_type     = h->slice_table[top_xy     ] == h->slice_num ? s->current_picture.mb_type[top_xy]     : 0;
204
        topright_type= h->slice_table[topright_xy] == h->slice_num ? s->current_picture.mb_type[topright_xy]: 0;
205
        left_type[0] = h->slice_table[left_xy[0] ] == h->slice_num ? s->current_picture.mb_type[left_xy[0]] : 0;
206
        left_type[1] = h->slice_table[left_xy[1] ] == h->slice_num ? s->current_picture.mb_type[left_xy[1]] : 0;
207

    
208
    if(IS_INTRA(mb_type)){
209
        int type_mask= h->pps.constrained_intra_pred ? IS_INTRA(-1) : -1;
210
        h->topleft_samples_available=
211
        h->top_samples_available=
212
        h->left_samples_available= 0xFFFF;
213
        h->topright_samples_available= 0xEEEA;
214

    
215
        if(!(top_type & type_mask)){
216
            h->topleft_samples_available= 0xB3FF;
217
            h->top_samples_available= 0x33FF;
218
            h->topright_samples_available= 0x26EA;
219
        }
220
        if(IS_INTERLACED(mb_type) != IS_INTERLACED(left_type[0])){
221
            if(IS_INTERLACED(mb_type)){
222
                if(!(left_type[0] & type_mask)){
223
                    h->topleft_samples_available&= 0xDFFF;
224
                    h->left_samples_available&= 0x5FFF;
225
                }
226
                if(!(left_type[1] & type_mask)){
227
                    h->topleft_samples_available&= 0xFF5F;
228
                    h->left_samples_available&= 0xFF5F;
229
                }
230
            }else{
231
                int left_typei = h->slice_table[left_xy[0] + s->mb_stride ] == h->slice_num
232
                                ? s->current_picture.mb_type[left_xy[0] + s->mb_stride] : 0;
233
                assert(left_xy[0] == left_xy[1]);
234
                if(!((left_typei & type_mask) && (left_type[0] & type_mask))){
235
                    h->topleft_samples_available&= 0xDF5F;
236
                    h->left_samples_available&= 0x5F5F;
237
                }
238
            }
239
        }else{
240
            if(!(left_type[0] & type_mask)){
241
                h->topleft_samples_available&= 0xDF5F;
242
                h->left_samples_available&= 0x5F5F;
243
            }
244
        }
245

    
246
        if(!(topleft_type & type_mask))
247
            h->topleft_samples_available&= 0x7FFF;
248

    
249
        if(!(topright_type & type_mask))
250
            h->topright_samples_available&= 0xFBFF;
251

    
252
        if(IS_INTRA4x4(mb_type)){
253
            if(IS_INTRA4x4(top_type)){
254
                h->intra4x4_pred_mode_cache[4+8*0]= h->intra4x4_pred_mode[top_xy][4];
255
                h->intra4x4_pred_mode_cache[5+8*0]= h->intra4x4_pred_mode[top_xy][5];
256
                h->intra4x4_pred_mode_cache[6+8*0]= h->intra4x4_pred_mode[top_xy][6];
257
                h->intra4x4_pred_mode_cache[7+8*0]= h->intra4x4_pred_mode[top_xy][3];
258
            }else{
259
                int pred;
260
                if(!(top_type & type_mask))
261
                    pred= -1;
262
                else{
263
                    pred= 2;
264
                }
265
                h->intra4x4_pred_mode_cache[4+8*0]=
266
                h->intra4x4_pred_mode_cache[5+8*0]=
267
                h->intra4x4_pred_mode_cache[6+8*0]=
268
                h->intra4x4_pred_mode_cache[7+8*0]= pred;
269
            }
270
            for(i=0; i<2; i++){
271
                if(IS_INTRA4x4(left_type[i])){
272
                    h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[0+2*i]];
273
                    h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[1+2*i]];
274
                }else{
275
                    int pred;
276
                    if(!(left_type[i] & type_mask))
277
                        pred= -1;
278
                    else{
279
                        pred= 2;
280
                    }
281
                    h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
282
                    h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= pred;
283
                }
284
            }
285
        }
286
    }
287
    }
288

    
289

    
290
/*
291
0 . T T. T T T T
292
1 L . .L . . . .
293
2 L . .L . . . .
294
3 . T TL . . . .
295
4 L . .L . . . .
296
5 L . .. . . . .
297
*/
298
//FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
299
    if(top_type){
300
        h->non_zero_count_cache[4+8*0]= h->non_zero_count[top_xy][4];
301
        h->non_zero_count_cache[5+8*0]= h->non_zero_count[top_xy][5];
302
        h->non_zero_count_cache[6+8*0]= h->non_zero_count[top_xy][6];
303
        h->non_zero_count_cache[7+8*0]= h->non_zero_count[top_xy][3];
304

    
305
        h->non_zero_count_cache[1+8*0]= h->non_zero_count[top_xy][9];
306
        h->non_zero_count_cache[2+8*0]= h->non_zero_count[top_xy][8];
307

    
308
        h->non_zero_count_cache[1+8*3]= h->non_zero_count[top_xy][12];
309
        h->non_zero_count_cache[2+8*3]= h->non_zero_count[top_xy][11];
310

    
311
    }else{
312
        h->non_zero_count_cache[4+8*0]=
313
        h->non_zero_count_cache[5+8*0]=
314
        h->non_zero_count_cache[6+8*0]=
315
        h->non_zero_count_cache[7+8*0]=
316

    
317
        h->non_zero_count_cache[1+8*0]=
318
        h->non_zero_count_cache[2+8*0]=
319

    
320
        h->non_zero_count_cache[1+8*3]=
321
        h->non_zero_count_cache[2+8*3]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
322

    
323
    }
324

    
325
    for (i=0; i<2; i++) {
326
        if(left_type[i]){
327
            h->non_zero_count_cache[3+8*1 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[0+2*i]];
328
            h->non_zero_count_cache[3+8*2 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[1+2*i]];
329
            h->non_zero_count_cache[0+8*1 +   8*i]= h->non_zero_count[left_xy[i]][left_block[4+2*i]];
330
            h->non_zero_count_cache[0+8*4 +   8*i]= h->non_zero_count[left_xy[i]][left_block[5+2*i]];
331
        }else{
332
            h->non_zero_count_cache[3+8*1 + 2*8*i]=
333
            h->non_zero_count_cache[3+8*2 + 2*8*i]=
334
            h->non_zero_count_cache[0+8*1 +   8*i]=
335
            h->non_zero_count_cache[0+8*4 +   8*i]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
336
        }
337
    }
338

    
339
    if( h->pps.cabac ) {
340
        // top_cbp
341
        if(top_type) {
342
            h->top_cbp = h->cbp_table[top_xy];
343
        } else if(IS_INTRA(mb_type)) {
344
            h->top_cbp = 0x1C0;
345
        } else {
346
            h->top_cbp = 0;
347
        }
348
        // left_cbp
349
        if (left_type[0]) {
350
            h->left_cbp = h->cbp_table[left_xy[0]] & 0x1f0;
351
        } else if(IS_INTRA(mb_type)) {
352
            h->left_cbp = 0x1C0;
353
        } else {
354
            h->left_cbp = 0;
355
        }
356
        if (left_type[0]) {
357
            h->left_cbp |= ((h->cbp_table[left_xy[0]]>>((left_block[0]&(~1))+1))&0x1) << 1;
358
        }
359
        if (left_type[1]) {
360
            h->left_cbp |= ((h->cbp_table[left_xy[1]]>>((left_block[2]&(~1))+1))&0x1) << 3;
361
        }
362
    }
363

    
364
#if 1
365
    if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
366
        int list;
367
        for(list=0; list<h->list_count; list++){
368
            if(!USES_LIST(mb_type, list) && !IS_DIRECT(mb_type) && !h->deblocking_filter){
369
                /*if(!h->mv_cache_clean[list]){
370
                    memset(h->mv_cache [list],  0, 8*5*2*sizeof(int16_t)); //FIXME clean only input? clean at all?
371
                    memset(h->ref_cache[list], PART_NOT_AVAILABLE, 8*5*sizeof(int8_t));
372
                    h->mv_cache_clean[list]= 1;
373
                }*/
374
                continue;
375
            }
376
            h->mv_cache_clean[list]= 0;
377

    
378
            if(USES_LIST(top_type, list)){
379
                const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
380
                const int b8_xy= h->mb2b8_xy[top_xy] + h->b8_stride;
381
                *(uint32_t*)h->mv_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 0];
382
                *(uint32_t*)h->mv_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 1];
383
                *(uint32_t*)h->mv_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 2];
384
                *(uint32_t*)h->mv_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 3];
385
                h->ref_cache[list][scan8[0] + 0 - 1*8]=
386
                h->ref_cache[list][scan8[0] + 1 - 1*8]= s->current_picture.ref_index[list][b8_xy + 0];
387
                h->ref_cache[list][scan8[0] + 2 - 1*8]=
388
                h->ref_cache[list][scan8[0] + 3 - 1*8]= s->current_picture.ref_index[list][b8_xy + 1];
389
            }else{
390
                *(uint32_t*)h->mv_cache [list][scan8[0] + 0 - 1*8]=
391
                *(uint32_t*)h->mv_cache [list][scan8[0] + 1 - 1*8]=
392
                *(uint32_t*)h->mv_cache [list][scan8[0] + 2 - 1*8]=
393
                *(uint32_t*)h->mv_cache [list][scan8[0] + 3 - 1*8]= 0;
394
                *(uint32_t*)&h->ref_cache[list][scan8[0] + 0 - 1*8]= ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101;
395
            }
396

    
397
            for(i=0; i<2; i++){
398
                int cache_idx = scan8[0] - 1 + i*2*8;
399
                if(USES_LIST(left_type[i], list)){
400
                    const int b_xy= h->mb2b_xy[left_xy[i]] + 3;
401
                    const int b8_xy= h->mb2b8_xy[left_xy[i]] + 1;
402
                    *(uint32_t*)h->mv_cache[list][cache_idx  ]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[0+i*2]];
403
                    *(uint32_t*)h->mv_cache[list][cache_idx+8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[1+i*2]];
404
                    h->ref_cache[list][cache_idx  ]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[0+i*2]>>1)];
405
                    h->ref_cache[list][cache_idx+8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[1+i*2]>>1)];
406
                }else{
407
                    *(uint32_t*)h->mv_cache [list][cache_idx  ]=
408
                    *(uint32_t*)h->mv_cache [list][cache_idx+8]= 0;
409
                    h->ref_cache[list][cache_idx  ]=
410
                    h->ref_cache[list][cache_idx+8]= left_type[i] ? LIST_NOT_USED : PART_NOT_AVAILABLE;
411
                }
412
            }
413

    
414
            if(for_deblock || ((IS_DIRECT(mb_type) && !h->direct_spatial_mv_pred) && !FRAME_MBAFF))
415
                continue;
416

    
417
            if(USES_LIST(topleft_type, list)){
418
                const int b_xy = h->mb2b_xy[topleft_xy] + 3 + h->b_stride + (topleft_partition & 2*h->b_stride);
419
                const int b8_xy= h->mb2b8_xy[topleft_xy] + 1 + (topleft_partition & h->b8_stride);
420
                *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
421
                h->ref_cache[list][scan8[0] - 1 - 1*8]= s->current_picture.ref_index[list][b8_xy];
422
            }else{
423
                *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= 0;
424
                h->ref_cache[list][scan8[0] - 1 - 1*8]= topleft_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
425
            }
426

    
427
            if(USES_LIST(topright_type, list)){
428
                const int b_xy= h->mb2b_xy[topright_xy] + 3*h->b_stride;
429
                const int b8_xy= h->mb2b8_xy[topright_xy] + h->b8_stride;
430
                *(uint32_t*)h->mv_cache[list][scan8[0] + 4 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
431
                h->ref_cache[list][scan8[0] + 4 - 1*8]= s->current_picture.ref_index[list][b8_xy];
432
            }else{
433
                *(uint32_t*)h->mv_cache [list][scan8[0] + 4 - 1*8]= 0;
434
                h->ref_cache[list][scan8[0] + 4 - 1*8]= topright_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
435
            }
436

    
437
            if((IS_SKIP(mb_type) || IS_DIRECT(mb_type)) && !FRAME_MBAFF)
438
                continue;
439

    
440
            h->ref_cache[list][scan8[5 ]+1] =
441
            h->ref_cache[list][scan8[7 ]+1] =
442
            h->ref_cache[list][scan8[13]+1] =  //FIXME remove past 3 (init somewhere else)
443
            h->ref_cache[list][scan8[4 ]] =
444
            h->ref_cache[list][scan8[12]] = PART_NOT_AVAILABLE;
445
            *(uint32_t*)h->mv_cache [list][scan8[5 ]+1]=
446
            *(uint32_t*)h->mv_cache [list][scan8[7 ]+1]=
447
            *(uint32_t*)h->mv_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
448
            *(uint32_t*)h->mv_cache [list][scan8[4 ]]=
449
            *(uint32_t*)h->mv_cache [list][scan8[12]]= 0;
450

    
451
            if( h->pps.cabac ) {
452
                /* XXX beurk, Load mvd */
453
                if(USES_LIST(top_type, list)){
454
                    const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
455
                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 0];
456
                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 1];
457
                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 2];
458
                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 3];
459
                }else{
460
                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 0 - 1*8]=
461
                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 1 - 1*8]=
462
                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 2 - 1*8]=
463
                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 3 - 1*8]= 0;
464
                }
465
                if(USES_LIST(left_type[0], list)){
466
                    const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
467
                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 0*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[0]];
468
                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[1]];
469
                }else{
470
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 0*8]=
471
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 1*8]= 0;
472
                }
473
                if(USES_LIST(left_type[1], list)){
474
                    const int b_xy= h->mb2b_xy[left_xy[1]] + 3;
475
                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 2*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[2]];
476
                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 3*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[3]];
477
                }else{
478
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 2*8]=
479
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 3*8]= 0;
480
                }
481
                *(uint32_t*)h->mvd_cache [list][scan8[5 ]+1]=
482
                *(uint32_t*)h->mvd_cache [list][scan8[7 ]+1]=
483
                *(uint32_t*)h->mvd_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
484
                *(uint32_t*)h->mvd_cache [list][scan8[4 ]]=
485
                *(uint32_t*)h->mvd_cache [list][scan8[12]]= 0;
486

    
487
                if(h->slice_type_nos == FF_B_TYPE){
488
                    fill_rectangle(&h->direct_cache[scan8[0]], 4, 4, 8, 0, 1);
489

    
490
                    if(IS_DIRECT(top_type)){
491
                        *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0x01010101;
492
                    }else if(IS_8X8(top_type)){
493
                        int b8_xy = h->mb2b8_xy[top_xy] + h->b8_stride;
494
                        h->direct_cache[scan8[0] + 0 - 1*8]= h->direct_table[b8_xy];
495
                        h->direct_cache[scan8[0] + 2 - 1*8]= h->direct_table[b8_xy + 1];
496
                    }else{
497
                        *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0;
498
                    }
499

    
500
                    if(IS_DIRECT(left_type[0]))
501
                        h->direct_cache[scan8[0] - 1 + 0*8]= 1;
502
                    else if(IS_8X8(left_type[0]))
503
                        h->direct_cache[scan8[0] - 1 + 0*8]= h->direct_table[h->mb2b8_xy[left_xy[0]] + 1 + h->b8_stride*(left_block[0]>>1)];
504
                    else
505
                        h->direct_cache[scan8[0] - 1 + 0*8]= 0;
506

    
507
                    if(IS_DIRECT(left_type[1]))
508
                        h->direct_cache[scan8[0] - 1 + 2*8]= 1;
509
                    else if(IS_8X8(left_type[1]))
510
                        h->direct_cache[scan8[0] - 1 + 2*8]= h->direct_table[h->mb2b8_xy[left_xy[1]] + 1 + h->b8_stride*(left_block[2]>>1)];
511
                    else
512
                        h->direct_cache[scan8[0] - 1 + 2*8]= 0;
513
                }
514
            }
515

    
516
            if(FRAME_MBAFF){
517
#define MAP_MVS\
518
                    MAP_F2F(scan8[0] - 1 - 1*8, topleft_type)\
519
                    MAP_F2F(scan8[0] + 0 - 1*8, top_type)\
520
                    MAP_F2F(scan8[0] + 1 - 1*8, top_type)\
521
                    MAP_F2F(scan8[0] + 2 - 1*8, top_type)\
522
                    MAP_F2F(scan8[0] + 3 - 1*8, top_type)\
523
                    MAP_F2F(scan8[0] + 4 - 1*8, topright_type)\
524
                    MAP_F2F(scan8[0] - 1 + 0*8, left_type[0])\
525
                    MAP_F2F(scan8[0] - 1 + 1*8, left_type[0])\
526
                    MAP_F2F(scan8[0] - 1 + 2*8, left_type[1])\
527
                    MAP_F2F(scan8[0] - 1 + 3*8, left_type[1])
528
                if(MB_FIELD){
529
#define MAP_F2F(idx, mb_type)\
530
                    if(!IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
531
                        h->ref_cache[list][idx] <<= 1;\
532
                        h->mv_cache[list][idx][1] /= 2;\
533
                        h->mvd_cache[list][idx][1] /= 2;\
534
                    }
535
                    MAP_MVS
536
#undef MAP_F2F
537
                }else{
538
#define MAP_F2F(idx, mb_type)\
539
                    if(IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
540
                        h->ref_cache[list][idx] >>= 1;\
541
                        h->mv_cache[list][idx][1] <<= 1;\
542
                        h->mvd_cache[list][idx][1] <<= 1;\
543
                    }
544
                    MAP_MVS
545
#undef MAP_F2F
546
                }
547
            }
548
        }
549
    }
550
#endif
551

    
552
    h->neighbor_transform_size= !!IS_8x8DCT(top_type) + !!IS_8x8DCT(left_type[0]);
553
}
554

    
555
static inline void write_back_intra_pred_mode(H264Context *h){
556
    const int mb_xy= h->mb_xy;
557

    
558
    h->intra4x4_pred_mode[mb_xy][0]= h->intra4x4_pred_mode_cache[7+8*1];
559
    h->intra4x4_pred_mode[mb_xy][1]= h->intra4x4_pred_mode_cache[7+8*2];
560
    h->intra4x4_pred_mode[mb_xy][2]= h->intra4x4_pred_mode_cache[7+8*3];
561
    h->intra4x4_pred_mode[mb_xy][3]= h->intra4x4_pred_mode_cache[7+8*4];
562
    h->intra4x4_pred_mode[mb_xy][4]= h->intra4x4_pred_mode_cache[4+8*4];
563
    h->intra4x4_pred_mode[mb_xy][5]= h->intra4x4_pred_mode_cache[5+8*4];
564
    h->intra4x4_pred_mode[mb_xy][6]= h->intra4x4_pred_mode_cache[6+8*4];
565
}
566

    
567
/**
568
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
569
 */
570
static inline int check_intra4x4_pred_mode(H264Context *h){
571
    MpegEncContext * const s = &h->s;
572
    static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
573
    static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
574
    int i;
575

    
576
    if(!(h->top_samples_available&0x8000)){
577
        for(i=0; i<4; i++){
578
            int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
579
            if(status<0){
580
                av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
581
                return -1;
582
            } else if(status){
583
                h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
584
            }
585
        }
586
    }
587

    
588
    if((h->left_samples_available&0x8888)!=0x8888){
589
        static const int mask[4]={0x8000,0x2000,0x80,0x20};
590
        for(i=0; i<4; i++){
591
            if(!(h->left_samples_available&mask[i])){
592
            int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
593
            if(status<0){
594
                av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
595
                return -1;
596
            } else if(status){
597
                h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
598
            }
599
            }
600
        }
601
    }
602

    
603
    return 0;
604
} //FIXME cleanup like next
605

    
606
/**
607
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
608
 */
609
static inline int check_intra_pred_mode(H264Context *h, int mode){
610
    MpegEncContext * const s = &h->s;
611
    static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
612
    static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
613

    
614
    if(mode > 6U) {
615
        av_log(h->s.avctx, AV_LOG_ERROR, "out of range intra chroma pred mode at %d %d\n", s->mb_x, s->mb_y);
616
        return -1;
617
    }
618

    
619
    if(!(h->top_samples_available&0x8000)){
620
        mode= top[ mode ];
621
        if(mode<0){
622
            av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
623
            return -1;
624
        }
625
    }
626

    
627
    if((h->left_samples_available&0x8080) != 0x8080){
628
        mode= left[ mode ];
629
        if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
630
            mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
631
        }
632
        if(mode<0){
633
            av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
634
            return -1;
635
        }
636
    }
637

    
638
    return mode;
639
}
640

    
641
/**
642
 * gets the predicted intra4x4 prediction mode.
643
 */
644
static inline int pred_intra_mode(H264Context *h, int n){
645
    const int index8= scan8[n];
646
    const int left= h->intra4x4_pred_mode_cache[index8 - 1];
647
    const int top = h->intra4x4_pred_mode_cache[index8 - 8];
648
    const int min= FFMIN(left, top);
649

    
650
    tprintf(h->s.avctx, "mode:%d %d min:%d\n", left ,top, min);
651

    
652
    if(min<0) return DC_PRED;
653
    else      return min;
654
}
655

    
656
static inline void write_back_non_zero_count(H264Context *h){
657
    const int mb_xy= h->mb_xy;
658

    
659
    h->non_zero_count[mb_xy][0]= h->non_zero_count_cache[7+8*1];
660
    h->non_zero_count[mb_xy][1]= h->non_zero_count_cache[7+8*2];
661
    h->non_zero_count[mb_xy][2]= h->non_zero_count_cache[7+8*3];
662
    h->non_zero_count[mb_xy][3]= h->non_zero_count_cache[7+8*4];
663
    h->non_zero_count[mb_xy][4]= h->non_zero_count_cache[4+8*4];
664
    h->non_zero_count[mb_xy][5]= h->non_zero_count_cache[5+8*4];
665
    h->non_zero_count[mb_xy][6]= h->non_zero_count_cache[6+8*4];
666

    
667
    h->non_zero_count[mb_xy][9]= h->non_zero_count_cache[1+8*2];
668
    h->non_zero_count[mb_xy][8]= h->non_zero_count_cache[2+8*2];
669
    h->non_zero_count[mb_xy][7]= h->non_zero_count_cache[2+8*1];
670

    
671
    h->non_zero_count[mb_xy][12]=h->non_zero_count_cache[1+8*5];
672
    h->non_zero_count[mb_xy][11]=h->non_zero_count_cache[2+8*5];
673
    h->non_zero_count[mb_xy][10]=h->non_zero_count_cache[2+8*4];
674
}
675

    
676
/**
677
 * gets the predicted number of non-zero coefficients.
678
 * @param n block index
679
 */
680
static inline int pred_non_zero_count(H264Context *h, int n){
681
    const int index8= scan8[n];
682
    const int left= h->non_zero_count_cache[index8 - 1];
683
    const int top = h->non_zero_count_cache[index8 - 8];
684
    int i= left + top;
685

    
686
    if(i<64) i= (i+1)>>1;
687

    
688
    tprintf(h->s.avctx, "pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31);
689

    
690
    return i&31;
691
}
692

    
693
static inline int fetch_diagonal_mv(H264Context *h, const int16_t **C, int i, int list, int part_width){
694
    const int topright_ref= h->ref_cache[list][ i - 8 + part_width ];
695
    MpegEncContext *s = &h->s;
696

    
697
    /* there is no consistent mapping of mvs to neighboring locations that will
698
     * make mbaff happy, so we can't move all this logic to fill_caches */
699
    if(FRAME_MBAFF){
700
        const uint32_t *mb_types = s->current_picture_ptr->mb_type;
701
        const int16_t *mv;
702
        *(uint32_t*)h->mv_cache[list][scan8[0]-2] = 0;
703
        *C = h->mv_cache[list][scan8[0]-2];
704

    
705
        if(!MB_FIELD
706
           && (s->mb_y&1) && i < scan8[0]+8 && topright_ref != PART_NOT_AVAILABLE){
707
            int topright_xy = s->mb_x + (s->mb_y-1)*s->mb_stride + (i == scan8[0]+3);
708
            if(IS_INTERLACED(mb_types[topright_xy])){
709
#define SET_DIAG_MV(MV_OP, REF_OP, X4, Y4)\
710
                const int x4 = X4, y4 = Y4;\
711
                const int mb_type = mb_types[(x4>>2)+(y4>>2)*s->mb_stride];\
712
                if(!USES_LIST(mb_type,list))\
713
                    return LIST_NOT_USED;\
714
                mv = s->current_picture_ptr->motion_val[list][x4 + y4*h->b_stride];\
715
                h->mv_cache[list][scan8[0]-2][0] = mv[0];\
716
                h->mv_cache[list][scan8[0]-2][1] = mv[1] MV_OP;\
717
                return s->current_picture_ptr->ref_index[list][(x4>>1) + (y4>>1)*h->b8_stride] REF_OP;
718

    
719
                SET_DIAG_MV(*2, >>1, s->mb_x*4+(i&7)-4+part_width, s->mb_y*4-1);
720
            }
721
        }
722
        if(topright_ref == PART_NOT_AVAILABLE
723
           && ((s->mb_y&1) || i >= scan8[0]+8) && (i&7)==4
724
           && h->ref_cache[list][scan8[0]-1] != PART_NOT_AVAILABLE){
725
            if(!MB_FIELD
726
               && IS_INTERLACED(mb_types[h->left_mb_xy[0]])){
727
                SET_DIAG_MV(*2, >>1, s->mb_x*4-1, (s->mb_y|1)*4+(s->mb_y&1)*2+(i>>4)-1);
728
            }
729
            if(MB_FIELD
730
               && !IS_INTERLACED(mb_types[h->left_mb_xy[0]])
731
               && i >= scan8[0]+8){
732
                // left shift will turn LIST_NOT_USED into PART_NOT_AVAILABLE, but that's OK.
733
                SET_DIAG_MV(/2, <<1, s->mb_x*4-1, (s->mb_y&~1)*4 - 1 + ((i-scan8[0])>>3)*2);
734
            }
735
        }
736
#undef SET_DIAG_MV
737
    }
738

    
739
    if(topright_ref != PART_NOT_AVAILABLE){
740
        *C= h->mv_cache[list][ i - 8 + part_width ];
741
        return topright_ref;
742
    }else{
743
        tprintf(s->avctx, "topright MV not available\n");
744

    
745
        *C= h->mv_cache[list][ i - 8 - 1 ];
746
        return h->ref_cache[list][ i - 8 - 1 ];
747
    }
748
}
749

    
750
/**
751
 * gets the predicted MV.
752
 * @param n the block index
753
 * @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
754
 * @param mx the x component of the predicted motion vector
755
 * @param my the y component of the predicted motion vector
756
 */
757
static inline void pred_motion(H264Context * const h, int n, int part_width, int list, int ref, int * const mx, int * const my){
758
    const int index8= scan8[n];
759
    const int top_ref=      h->ref_cache[list][ index8 - 8 ];
760
    const int left_ref=     h->ref_cache[list][ index8 - 1 ];
761
    const int16_t * const A= h->mv_cache[list][ index8 - 1 ];
762
    const int16_t * const B= h->mv_cache[list][ index8 - 8 ];
763
    const int16_t * C;
764
    int diagonal_ref, match_count;
765

    
766
    assert(part_width==1 || part_width==2 || part_width==4);
767

    
768
/* mv_cache
769
  B . . A T T T T
770
  U . . L . . , .
771
  U . . L . . . .
772
  U . . L . . , .
773
  . . . L . . . .
774
*/
775

    
776
    diagonal_ref= fetch_diagonal_mv(h, &C, index8, list, part_width);
777
    match_count= (diagonal_ref==ref) + (top_ref==ref) + (left_ref==ref);
778
    tprintf(h->s.avctx, "pred_motion match_count=%d\n", match_count);
779
    if(match_count > 1){ //most common
780
        *mx= mid_pred(A[0], B[0], C[0]);
781
        *my= mid_pred(A[1], B[1], C[1]);
782
    }else if(match_count==1){
783
        if(left_ref==ref){
784
            *mx= A[0];
785
            *my= A[1];
786
        }else if(top_ref==ref){
787
            *mx= B[0];
788
            *my= B[1];
789
        }else{
790
            *mx= C[0];
791
            *my= C[1];
792
        }
793
    }else{
794
        if(top_ref == PART_NOT_AVAILABLE && diagonal_ref == PART_NOT_AVAILABLE && left_ref != PART_NOT_AVAILABLE){
795
            *mx= A[0];
796
            *my= A[1];
797
        }else{
798
            *mx= mid_pred(A[0], B[0], C[0]);
799
            *my= mid_pred(A[1], B[1], C[1]);
800
        }
801
    }
802

    
803
    tprintf(h->s.avctx, "pred_motion (%2d %2d %2d) (%2d %2d %2d) (%2d %2d %2d) -> (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1],                    diagonal_ref, C[0], C[1], left_ref, A[0], A[1], ref, *mx, *my, h->s.mb_x, h->s.mb_y, n, list);
804
}
805

    
806
/**
807
 * gets the directionally predicted 16x8 MV.
808
 * @param n the block index
809
 * @param mx the x component of the predicted motion vector
810
 * @param my the y component of the predicted motion vector
811
 */
812
static inline void pred_16x8_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
813
    if(n==0){
814
        const int top_ref=      h->ref_cache[list][ scan8[0] - 8 ];
815
        const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];
816

    
817
        tprintf(h->s.avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1], h->s.mb_x, h->s.mb_y, n, list);
818

    
819
        if(top_ref == ref){
820
            *mx= B[0];
821
            *my= B[1];
822
            return;
823
        }
824
    }else{
825
        const int left_ref=     h->ref_cache[list][ scan8[8] - 1 ];
826
        const int16_t * const A= h->mv_cache[list][ scan8[8] - 1 ];
827

    
828
        tprintf(h->s.avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list);
829

    
830
        if(left_ref == ref){
831
            *mx= A[0];
832
            *my= A[1];
833
            return;
834
        }
835
    }
836

    
837
    //RARE
838
    pred_motion(h, n, 4, list, ref, mx, my);
839
}
840

    
841
/**
842
 * gets the directionally predicted 8x16 MV.
843
 * @param n the block index
844
 * @param mx the x component of the predicted motion vector
845
 * @param my the y component of the predicted motion vector
846
 */
847
static inline void pred_8x16_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
848
    if(n==0){
849
        const int left_ref=      h->ref_cache[list][ scan8[0] - 1 ];
850
        const int16_t * const A=  h->mv_cache[list][ scan8[0] - 1 ];
851

    
852
        tprintf(h->s.avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list);
853

    
854
        if(left_ref == ref){
855
            *mx= A[0];
856
            *my= A[1];
857
            return;
858
        }
859
    }else{
860
        const int16_t * C;
861
        int diagonal_ref;
862

    
863
        diagonal_ref= fetch_diagonal_mv(h, &C, scan8[4], list, 2);
864

    
865
        tprintf(h->s.avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", diagonal_ref, C[0], C[1], h->s.mb_x, h->s.mb_y, n, list);
866

    
867
        if(diagonal_ref == ref){
868
            *mx= C[0];
869
            *my= C[1];
870
            return;
871
        }
872
    }
873

    
874
    //RARE
875
    pred_motion(h, n, 2, list, ref, mx, my);
876
}
877

    
878
static inline void pred_pskip_motion(H264Context * const h, int * const mx, int * const my){
879
    const int top_ref = h->ref_cache[0][ scan8[0] - 8 ];
880
    const int left_ref= h->ref_cache[0][ scan8[0] - 1 ];
881

    
882
    tprintf(h->s.avctx, "pred_pskip: (%d) (%d) at %2d %2d\n", top_ref, left_ref, h->s.mb_x, h->s.mb_y);
883

    
884
    if(top_ref == PART_NOT_AVAILABLE || left_ref == PART_NOT_AVAILABLE
885
       || (top_ref == 0  && *(uint32_t*)h->mv_cache[0][ scan8[0] - 8 ] == 0)
886
       || (left_ref == 0 && *(uint32_t*)h->mv_cache[0][ scan8[0] - 1 ] == 0)){
887

    
888
        *mx = *my = 0;
889
        return;
890
    }
891

    
892
    pred_motion(h, 0, 4, 0, 0, mx, my);
893

    
894
    return;
895
}
896

    
897
static int get_scale_factor(H264Context * const h, int poc, int poc1, int i){
898
    int poc0 = h->ref_list[0][i].poc;
899
    int td = av_clip(poc1 - poc0, -128, 127);
900
    if(td == 0 || h->ref_list[0][i].long_ref){
901
        return 256;
902
    }else{
903
        int tb = av_clip(poc - poc0, -128, 127);
904
        int tx = (16384 + (FFABS(td) >> 1)) / td;
905
        return av_clip((tb*tx + 32) >> 6, -1024, 1023);
906
    }
907
}
908

    
909
static inline void direct_dist_scale_factor(H264Context * const h){
910
    MpegEncContext * const s = &h->s;
911
    const int poc = h->s.current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ];
912
    const int poc1 = h->ref_list[1][0].poc;
913
    int i, field;
914
    for(field=0; field<2; field++){
915
        const int poc  = h->s.current_picture_ptr->field_poc[field];
916
        const int poc1 = h->ref_list[1][0].field_poc[field];
917
        for(i=0; i < 2*h->ref_count[0]; i++)
918
            h->dist_scale_factor_field[field][i^field] = get_scale_factor(h, poc, poc1, i+16);
919
    }
920

    
921
    for(i=0; i<h->ref_count[0]; i++){
922
        h->dist_scale_factor[i] = get_scale_factor(h, poc, poc1, i);
923
    }
924
}
925

    
926
static void fill_colmap(H264Context *h, int map[2][16+32], int list, int field, int colfield, int mbafi){
927
    MpegEncContext * const s = &h->s;
928
    Picture * const ref1 = &h->ref_list[1][0];
929
    int j, old_ref, rfield;
930
    int start= mbafi ? 16                      : 0;
931
    int end  = mbafi ? 16+2*h->ref_count[list] : h->ref_count[list];
932
    int interl= mbafi || s->picture_structure != PICT_FRAME;
933

    
934
    /* bogus; fills in for missing frames */
935
    memset(map[list], 0, sizeof(map[list]));
936

    
937
    for(rfield=0; rfield<2; rfield++){
938
        for(old_ref=0; old_ref<ref1->ref_count[colfield][list]; old_ref++){
939
            int poc = ref1->ref_poc[colfield][list][old_ref];
940

    
941
            if     (!interl)
942
                poc |= 3;
943
            else if( interl && (poc&3) == 3) //FIXME store all MBAFF references so this isnt needed
944
                poc= (poc&~3) + rfield + 1;
945

    
946
            for(j=start; j<end; j++){
947
                if(4*h->ref_list[list][j].frame_num + (h->ref_list[list][j].reference&3) == poc){
948
                    int cur_ref= mbafi ? (j-16)^field : j;
949
                    map[list][2*old_ref + (rfield^field) + 16] = cur_ref;
950
                    if(rfield == field)
951
                        map[list][old_ref] = cur_ref;
952
                    break;
953
                }
954
            }
955
        }
956
    }
957
}
958

    
959
static inline void direct_ref_list_init(H264Context * const h){
960
    MpegEncContext * const s = &h->s;
961
    Picture * const ref1 = &h->ref_list[1][0];
962
    Picture * const cur = s->current_picture_ptr;
963
    int list, j, field;
964
    int sidx= (s->picture_structure&1)^1;
965
    int ref1sidx= (ref1->reference&1)^1;
966

    
967
    for(list=0; list<2; list++){
968
        cur->ref_count[sidx][list] = h->ref_count[list];
969
        for(j=0; j<h->ref_count[list]; j++)
970
            cur->ref_poc[sidx][list][j] = 4*h->ref_list[list][j].frame_num + (h->ref_list[list][j].reference&3);
971
    }
972

    
973
    if(s->picture_structure == PICT_FRAME){
974
        memcpy(cur->ref_count[1], cur->ref_count[0], sizeof(cur->ref_count[0]));
975
        memcpy(cur->ref_poc  [1], cur->ref_poc  [0], sizeof(cur->ref_poc  [0]));
976
    }
977

    
978
    cur->mbaff= FRAME_MBAFF;
979

    
980
    if(cur->pict_type != FF_B_TYPE || h->direct_spatial_mv_pred)
981
        return;
982

    
983
    for(list=0; list<2; list++){
984
        fill_colmap(h, h->map_col_to_list0, list, sidx, ref1sidx, 0);
985
        for(field=0; field<2; field++)
986
            fill_colmap(h, h->map_col_to_list0_field[field], list, field, field, 1);
987
    }
988
}
989

    
990
static inline void pred_direct_motion(H264Context * const h, int *mb_type){
991
    MpegEncContext * const s = &h->s;
992
    int b8_stride = h->b8_stride;
993
    int b4_stride = h->b_stride;
994
    int mb_xy = h->mb_xy;
995
    int mb_type_col[2];
996
    const int16_t (*l1mv0)[2], (*l1mv1)[2];
997
    const int8_t *l1ref0, *l1ref1;
998
    const int is_b8x8 = IS_8X8(*mb_type);
999
    unsigned int sub_mb_type;
1000
    int i8, i4;
1001

    
1002
#define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16|MB_TYPE_INTRA4x4|MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM)
1003

    
1004
    if(IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])){ // AFL/AFR/FR/FL -> AFL/FL
1005
        if(!IS_INTERLACED(*mb_type)){                    //     AFR/FR    -> AFL/FL
1006
            int cur_poc = s->current_picture_ptr->poc;
1007
            int *col_poc = h->ref_list[1]->field_poc;
1008
            int col_parity = FFABS(col_poc[0] - cur_poc) >= FFABS(col_poc[1] - cur_poc);
1009
            mb_xy= s->mb_x + ((s->mb_y&~1) + col_parity)*s->mb_stride;
1010
            b8_stride = 0;
1011
        }else if(!(s->picture_structure & h->ref_list[1][0].reference) && !h->ref_list[1][0].mbaff){// FL -> FL & differ parity
1012
            int fieldoff= 2*(h->ref_list[1][0].reference)-3;
1013
            mb_xy += s->mb_stride*fieldoff;
1014
        }
1015
        goto single_col;
1016
    }else{                                               // AFL/AFR/FR/FL -> AFR/FR
1017
        if(IS_INTERLACED(*mb_type)){                     // AFL       /FL -> AFR/FR
1018
            mb_xy= s->mb_x + (s->mb_y&~1)*s->mb_stride;
1019
            mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy];
1020
            mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + s->mb_stride];
1021
            b8_stride *= 3;
1022
            b4_stride *= 6;
1023
            //FIXME IS_8X8(mb_type_col[0]) && !h->sps.direct_8x8_inference_flag
1024
            if(    (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)
1025
                && (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA)
1026
                && !is_b8x8){
1027
                sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1028
                *mb_type   |= MB_TYPE_16x8 |MB_TYPE_L0L1|MB_TYPE_DIRECT2; /* B_16x8 */
1029
            }else{
1030
                sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1031
                *mb_type   |= MB_TYPE_8x8|MB_TYPE_L0L1;
1032
            }
1033
        }else{                                           //     AFR/FR    -> AFR/FR
1034
single_col:
1035
            mb_type_col[0] =
1036
            mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy];
1037
            if(IS_8X8(mb_type_col[0]) && !h->sps.direct_8x8_inference_flag){
1038
                /* FIXME save sub mb types from previous frames (or derive from MVs)
1039
                * so we know exactly what block size to use */
1040
                sub_mb_type = MB_TYPE_8x8|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_4x4 */
1041
                *mb_type   |= MB_TYPE_8x8|MB_TYPE_L0L1;
1042
            }else if(!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)){
1043
                sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1044
                *mb_type   |= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_16x16 */
1045
            }else{
1046
                sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1047
                *mb_type   |= MB_TYPE_8x8|MB_TYPE_L0L1;
1048
            }
1049
        }
1050
    }
1051

    
1052
    l1mv0  = &h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]];
1053
    l1mv1  = &h->ref_list[1][0].motion_val[1][h->mb2b_xy [mb_xy]];
1054
    l1ref0 = &h->ref_list[1][0].ref_index [0][h->mb2b8_xy[mb_xy]];
1055
    l1ref1 = &h->ref_list[1][0].ref_index [1][h->mb2b8_xy[mb_xy]];
1056
    if(!b8_stride){
1057
        if(s->mb_y&1){
1058
            l1ref0 += h->b8_stride;
1059
            l1ref1 += h->b8_stride;
1060
            l1mv0  +=  2*b4_stride;
1061
            l1mv1  +=  2*b4_stride;
1062
        }
1063
    }
1064

    
1065
    if(h->direct_spatial_mv_pred){
1066
        int ref[2];
1067
        int mv[2][2];
1068
        int list;
1069

    
1070
        /* FIXME interlacing + spatial direct uses wrong colocated block positions */
1071

    
1072
        /* ref = min(neighbors) */
1073
        for(list=0; list<2; list++){
1074
            int refa = h->ref_cache[list][scan8[0] - 1];
1075
            int refb = h->ref_cache[list][scan8[0] - 8];
1076
            int refc = h->ref_cache[list][scan8[0] - 8 + 4];
1077
            if(refc == PART_NOT_AVAILABLE)
1078
                refc = h->ref_cache[list][scan8[0] - 8 - 1];
1079
            ref[list] = FFMIN3((unsigned)refa, (unsigned)refb, (unsigned)refc);
1080
            if(ref[list] < 0)
1081
                ref[list] = -1;
1082
        }
1083

    
1084
        if(ref[0] < 0 && ref[1] < 0){
1085
            ref[0] = ref[1] = 0;
1086
            mv[0][0] = mv[0][1] =
1087
            mv[1][0] = mv[1][1] = 0;
1088
        }else{
1089
            for(list=0; list<2; list++){
1090
                if(ref[list] >= 0)
1091
                    pred_motion(h, 0, 4, list, ref[list], &mv[list][0], &mv[list][1]);
1092
                else
1093
                    mv[list][0] = mv[list][1] = 0;
1094
            }
1095
        }
1096

    
1097
        if(ref[1] < 0){
1098
            if(!is_b8x8)
1099
                *mb_type &= ~MB_TYPE_L1;
1100
            sub_mb_type &= ~MB_TYPE_L1;
1101
        }else if(ref[0] < 0){
1102
            if(!is_b8x8)
1103
                *mb_type &= ~MB_TYPE_L0;
1104
            sub_mb_type &= ~MB_TYPE_L0;
1105
        }
1106

    
1107
        if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
1108
            for(i8=0; i8<4; i8++){
1109
                int x8 = i8&1;
1110
                int y8 = i8>>1;
1111
                int xy8 = x8+y8*b8_stride;
1112
                int xy4 = 3*x8+y8*b4_stride;
1113
                int a=0, b=0;
1114

    
1115
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1116
                    continue;
1117
                h->sub_mb_type[i8] = sub_mb_type;
1118

    
1119
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
1120
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
1121
                if(!IS_INTRA(mb_type_col[y8])
1122
                   && (   (l1ref0[xy8] == 0 && FFABS(l1mv0[xy4][0]) <= 1 && FFABS(l1mv0[xy4][1]) <= 1)
1123
                       || (l1ref0[xy8]  < 0 && l1ref1[xy8] == 0 && FFABS(l1mv1[xy4][0]) <= 1 && FFABS(l1mv1[xy4][1]) <= 1))){
1124
                    if(ref[0] > 0)
1125
                        a= pack16to32(mv[0][0],mv[0][1]);
1126
                    if(ref[1] > 0)
1127
                        b= pack16to32(mv[1][0],mv[1][1]);
1128
                }else{
1129
                    a= pack16to32(mv[0][0],mv[0][1]);
1130
                    b= pack16to32(mv[1][0],mv[1][1]);
1131
                }
1132
                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, a, 4);
1133
                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, b, 4);
1134
            }
1135
        }else if(IS_16X16(*mb_type)){
1136
            int a=0, b=0;
1137

    
1138
            fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
1139
            fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
1140
            if(!IS_INTRA(mb_type_col[0])
1141
               && (   (l1ref0[0] == 0 && FFABS(l1mv0[0][0]) <= 1 && FFABS(l1mv0[0][1]) <= 1)
1142
                   || (l1ref0[0]  < 0 && l1ref1[0] == 0 && FFABS(l1mv1[0][0]) <= 1 && FFABS(l1mv1[0][1]) <= 1
1143
                       && (h->x264_build>33 || !h->x264_build)))){
1144
                if(ref[0] > 0)
1145
                    a= pack16to32(mv[0][0],mv[0][1]);
1146
                if(ref[1] > 0)
1147
                    b= pack16to32(mv[1][0],mv[1][1]);
1148
            }else{
1149
                a= pack16to32(mv[0][0],mv[0][1]);
1150
                b= pack16to32(mv[1][0],mv[1][1]);
1151
            }
1152
            fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, a, 4);
1153
            fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, b, 4);
1154
        }else{
1155
            for(i8=0; i8<4; i8++){
1156
                const int x8 = i8&1;
1157
                const int y8 = i8>>1;
1158

    
1159
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1160
                    continue;
1161
                h->sub_mb_type[i8] = sub_mb_type;
1162

    
1163
                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mv[0][0],mv[0][1]), 4);
1164
                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mv[1][0],mv[1][1]), 4);
1165
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
1166
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
1167

    
1168
                /* col_zero_flag */
1169
                if(!IS_INTRA(mb_type_col[0]) && (   l1ref0[x8 + y8*b8_stride] == 0
1170
                                              || (l1ref0[x8 + y8*b8_stride] < 0 && l1ref1[x8 + y8*b8_stride] == 0
1171
                                                  && (h->x264_build>33 || !h->x264_build)))){
1172
                    const int16_t (*l1mv)[2]= l1ref0[x8 + y8*b8_stride] == 0 ? l1mv0 : l1mv1;
1173
                    if(IS_SUB_8X8(sub_mb_type)){
1174
                        const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride];
1175
                        if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
1176
                            if(ref[0] == 0)
1177
                                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1178
                            if(ref[1] == 0)
1179
                                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1180
                        }
1181
                    }else
1182
                    for(i4=0; i4<4; i4++){
1183
                        const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
1184
                        if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
1185
                            if(ref[0] == 0)
1186
                                *(uint32_t*)h->mv_cache[0][scan8[i8*4+i4]] = 0;
1187
                            if(ref[1] == 0)
1188
                                *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] = 0;
1189
                        }
1190
                    }
1191
                }
1192
            }
1193
        }
1194
    }else{ /* direct temporal mv pred */
1195
        const int *map_col_to_list0[2] = {h->map_col_to_list0[0], h->map_col_to_list0[1]};
1196
        const int *dist_scale_factor = h->dist_scale_factor;
1197
        int ref_offset= 0;
1198

    
1199
        if(FRAME_MBAFF && IS_INTERLACED(*mb_type)){
1200
            map_col_to_list0[0] = h->map_col_to_list0_field[s->mb_y&1][0];
1201
            map_col_to_list0[1] = h->map_col_to_list0_field[s->mb_y&1][1];
1202
            dist_scale_factor   =h->dist_scale_factor_field[s->mb_y&1];
1203
        }
1204
        if(h->ref_list[1][0].mbaff && IS_INTERLACED(mb_type_col[0]))
1205
            ref_offset += 16;
1206

    
1207
        if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
1208
            /* FIXME assumes direct_8x8_inference == 1 */
1209
            int y_shift  = 2*!IS_INTERLACED(*mb_type);
1210

    
1211
            for(i8=0; i8<4; i8++){
1212
                const int x8 = i8&1;
1213
                const int y8 = i8>>1;
1214
                int ref0, scale;
1215
                const int16_t (*l1mv)[2]= l1mv0;
1216

    
1217
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1218
                    continue;
1219
                h->sub_mb_type[i8] = sub_mb_type;
1220

    
1221
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1222
                if(IS_INTRA(mb_type_col[y8])){
1223
                    fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
1224
                    fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1225
                    fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1226
                    continue;
1227
                }
1228

    
1229
                ref0 = l1ref0[x8 + y8*b8_stride];
1230
                if(ref0 >= 0)
1231
                    ref0 = map_col_to_list0[0][ref0 + ref_offset];
1232
                else{
1233
                    ref0 = map_col_to_list0[1][l1ref1[x8 + y8*b8_stride] + ref_offset];
1234
                    l1mv= l1mv1;
1235
                }
1236
                scale = dist_scale_factor[ref0];
1237
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
1238

    
1239
                {
1240
                    const int16_t *mv_col = l1mv[x8*3 + y8*b4_stride];
1241
                    int my_col = (mv_col[1]<<y_shift)/2;
1242
                    int mx = (scale * mv_col[0] + 128) >> 8;
1243
                    int my = (scale * my_col + 128) >> 8;
1244
                    fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
1245
                    fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-my_col), 4);
1246
                }
1247
            }
1248
            return;
1249
        }
1250

    
1251
        /* one-to-one mv scaling */
1252

    
1253
        if(IS_16X16(*mb_type)){
1254
            int ref, mv0, mv1;
1255

    
1256
            fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, 0, 1);
1257
            if(IS_INTRA(mb_type_col[0])){
1258
                ref=mv0=mv1=0;
1259
            }else{
1260
                const int ref0 = l1ref0[0] >= 0 ? map_col_to_list0[0][l1ref0[0] + ref_offset]
1261
                                                : map_col_to_list0[1][l1ref1[0] + ref_offset];
1262
                const int scale = dist_scale_factor[ref0];
1263
                const int16_t *mv_col = l1ref0[0] >= 0 ? l1mv0[0] : l1mv1[0];
1264
                int mv_l0[2];
1265
                mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
1266
                mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
1267
                ref= ref0;
1268
                mv0= pack16to32(mv_l0[0],mv_l0[1]);
1269
                mv1= pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
1270
            }
1271
            fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
1272
            fill_rectangle(&h-> mv_cache[0][scan8[0]], 4, 4, 8, mv0, 4);
1273
            fill_rectangle(&h-> mv_cache[1][scan8[0]], 4, 4, 8, mv1, 4);
1274
        }else{
1275
            for(i8=0; i8<4; i8++){
1276
                const int x8 = i8&1;
1277
                const int y8 = i8>>1;
1278
                int ref0, scale;
1279
                const int16_t (*l1mv)[2]= l1mv0;
1280

    
1281
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1282
                    continue;
1283
                h->sub_mb_type[i8] = sub_mb_type;
1284
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1285
                if(IS_INTRA(mb_type_col[0])){
1286
                    fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
1287
                    fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1288
                    fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1289
                    continue;
1290
                }
1291

    
1292
                ref0 = l1ref0[x8 + y8*b8_stride] + ref_offset;
1293
                if(ref0 >= 0)
1294
                    ref0 = map_col_to_list0[0][ref0];
1295
                else{
1296
                    ref0 = map_col_to_list0[1][l1ref1[x8 + y8*b8_stride] + ref_offset];
1297
                    l1mv= l1mv1;
1298
                }
1299
                scale = dist_scale_factor[ref0];
1300

    
1301
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
1302
                if(IS_SUB_8X8(sub_mb_type)){
1303
                    const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride];
1304
                    int mx = (scale * mv_col[0] + 128) >> 8;
1305
                    int my = (scale * mv_col[1] + 128) >> 8;
1306
                    fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
1307
                    fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-mv_col[1]), 4);
1308
                }else
1309
                for(i4=0; i4<4; i4++){
1310
                    const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
1311
                    int16_t *mv_l0 = h->mv_cache[0][scan8[i8*4+i4]];
1312
                    mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
1313
                    mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
1314
                    *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] =
1315
                        pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
1316
                }
1317
            }
1318
        }
1319
    }
1320
}
1321

    
1322
static inline void write_back_motion(H264Context *h, int mb_type){
1323
    MpegEncContext * const s = &h->s;
1324
    const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
1325
    const int b8_xy= 2*s->mb_x + 2*s->mb_y*h->b8_stride;
1326
    int list;
1327

    
1328
    if(!USES_LIST(mb_type, 0))
1329
        fill_rectangle(&s->current_picture.ref_index[0][b8_xy], 2, 2, h->b8_stride, (uint8_t)LIST_NOT_USED, 1);
1330

    
1331
    for(list=0; list<h->list_count; list++){
1332
        int y;
1333
        if(!USES_LIST(mb_type, list))
1334
            continue;
1335

    
1336
        for(y=0; y<4; y++){
1337
            *(uint64_t*)s->current_picture.motion_val[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+0 + 8*y];
1338
            *(uint64_t*)s->current_picture.motion_val[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+2 + 8*y];
1339
        }
1340
        if( h->pps.cabac ) {
1341
            if(IS_SKIP(mb_type))
1342
                fill_rectangle(h->mvd_table[list][b_xy], 4, 4, h->b_stride, 0, 4);
1343
            else
1344
            for(y=0; y<4; y++){
1345
                *(uint64_t*)h->mvd_table[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+0 + 8*y];
1346
                *(uint64_t*)h->mvd_table[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+2 + 8*y];
1347
            }
1348
        }
1349

    
1350
        {
1351
            int8_t *ref_index = &s->current_picture.ref_index[list][b8_xy];
1352
            ref_index[0+0*h->b8_stride]= h->ref_cache[list][scan8[0]];
1353
            ref_index[1+0*h->b8_stride]= h->ref_cache[list][scan8[4]];
1354
            ref_index[0+1*h->b8_stride]= h->ref_cache[list][scan8[8]];
1355
            ref_index[1+1*h->b8_stride]= h->ref_cache[list][scan8[12]];
1356
        }
1357
    }
1358

    
1359
    if(h->slice_type_nos == FF_B_TYPE && h->pps.cabac){
1360
        if(IS_8X8(mb_type)){
1361
            uint8_t *direct_table = &h->direct_table[b8_xy];
1362
            direct_table[1+0*h->b8_stride] = IS_DIRECT(h->sub_mb_type[1]) ? 1 : 0;
1363
            direct_table[0+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[2]) ? 1 : 0;
1364
            direct_table[1+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[3]) ? 1 : 0;
1365
        }
1366
    }
1367
}
1368

    
1369
/**
1370
 * Decodes a network abstraction layer unit.
1371
 * @param consumed is the number of bytes used as input
1372
 * @param length is the length of the array
1373
 * @param dst_length is the number of decoded bytes FIXME here or a decode rbsp tailing?
1374
 * @returns decoded bytes, might be src+1 if no escapes
1375
 */
1376
static const uint8_t *decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
1377
    int i, si, di;
1378
    uint8_t *dst;
1379
    int bufidx;
1380

    
1381
//    src[0]&0x80;                //forbidden bit
1382
    h->nal_ref_idc= src[0]>>5;
1383
    h->nal_unit_type= src[0]&0x1F;
1384

    
1385
    src++; length--;
1386
#if 0
1387
    for(i=0; i<length; i++)
1388
        printf("%2X ", src[i]);
1389
#endif
1390
    for(i=0; i+1<length; i+=2){
1391
        if(src[i]) continue;
1392
        if(i>0 && src[i-1]==0) i--;
1393
        if(i+2<length && src[i+1]==0 && src[i+2]<=3){
1394
            if(src[i+2]!=3){
1395
                /* startcode, so we must be past the end */
1396
                length=i;
1397
            }
1398
            break;
1399
        }
1400
    }
1401

    
1402
    if(i>=length-1){ //no escaped 0
1403
        *dst_length= length;
1404
        *consumed= length+1; //+1 for the header
1405
        return src;
1406
    }
1407

    
1408
    bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
1409
    h->rbsp_buffer[bufidx]= av_fast_realloc(h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
1410
    dst= h->rbsp_buffer[bufidx];
1411

    
1412
    if (dst == NULL){
1413
        return NULL;
1414
    }
1415

    
1416
//printf("decoding esc\n");
1417
    si=di=0;
1418
    while(si<length){
1419
        //remove escapes (very rare 1:2^22)
1420
        if(si+2<length && src[si]==0 && src[si+1]==0 && src[si+2]<=3){
1421
            if(src[si+2]==3){ //escape
1422
                dst[di++]= 0;
1423
                dst[di++]= 0;
1424
                si+=3;
1425
                continue;
1426
            }else //next start code
1427
                break;
1428
        }
1429

    
1430
        dst[di++]= src[si++];
1431
    }
1432

    
1433
    memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1434

    
1435
    *dst_length= di;
1436
    *consumed= si + 1;//+1 for the header
1437
//FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
1438
    return dst;
1439
}
1440

    
1441
/**
1442
 * identifies the exact end of the bitstream
1443
 * @return the length of the trailing, or 0 if damaged
1444
 */
1445
static int decode_rbsp_trailing(H264Context *h, const uint8_t *src){
1446
    int v= *src;
1447
    int r;
1448

    
1449
    tprintf(h->s.avctx, "rbsp trailing %X\n", v);
1450

    
1451
    for(r=1; r<9; r++){
1452
        if(v&1) return r;
1453
        v>>=1;
1454
    }
1455
    return 0;
1456
}
1457

    
1458
/**
1459
 * IDCT transforms the 16 dc values and dequantizes them.
1460
 * @param qp quantization parameter
1461
 */
1462
static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
1463
#define stride 16
1464
    int i;
1465
    int temp[16]; //FIXME check if this is a good idea
1466
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
1467
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1468

    
1469
//memset(block, 64, 2*256);
1470
//return;
1471
    for(i=0; i<4; i++){
1472
        const int offset= y_offset[i];
1473
        const int z0= block[offset+stride*0] + block[offset+stride*4];
1474
        const int z1= block[offset+stride*0] - block[offset+stride*4];
1475
        const int z2= block[offset+stride*1] - block[offset+stride*5];
1476
        const int z3= block[offset+stride*1] + block[offset+stride*5];
1477

    
1478
        temp[4*i+0]= z0+z3;
1479
        temp[4*i+1]= z1+z2;
1480
        temp[4*i+2]= z1-z2;
1481
        temp[4*i+3]= z0-z3;
1482
    }
1483

    
1484
    for(i=0; i<4; i++){
1485
        const int offset= x_offset[i];
1486
        const int z0= temp[4*0+i] + temp[4*2+i];
1487
        const int z1= temp[4*0+i] - temp[4*2+i];
1488
        const int z2= temp[4*1+i] - temp[4*3+i];
1489
        const int z3= temp[4*1+i] + temp[4*3+i];
1490

    
1491
        block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual
1492
        block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
1493
        block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
1494
        block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
1495
    }
1496
}
1497

    
1498
#if 0
1499
/**
1500
 * DCT transforms the 16 dc values.
1501
 * @param qp quantization parameter ??? FIXME
1502
 */
1503
static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
1504
//    const int qmul= dequant_coeff[qp][0];
1505
    int i;
1506
    int temp[16]; //FIXME check if this is a good idea
1507
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
1508
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1509

1510
    for(i=0; i<4; i++){
1511
        const int offset= y_offset[i];
1512
        const int z0= block[offset+stride*0] + block[offset+stride*4];
1513
        const int z1= block[offset+stride*0] - block[offset+stride*4];
1514
        const int z2= block[offset+stride*1] - block[offset+stride*5];
1515
        const int z3= block[offset+stride*1] + block[offset+stride*5];
1516

1517
        temp[4*i+0]= z0+z3;
1518
        temp[4*i+1]= z1+z2;
1519
        temp[4*i+2]= z1-z2;
1520
        temp[4*i+3]= z0-z3;
1521
    }
1522

1523
    for(i=0; i<4; i++){
1524
        const int offset= x_offset[i];
1525
        const int z0= temp[4*0+i] + temp[4*2+i];
1526
        const int z1= temp[4*0+i] - temp[4*2+i];
1527
        const int z2= temp[4*1+i] - temp[4*3+i];
1528
        const int z3= temp[4*1+i] + temp[4*3+i];
1529

1530
        block[stride*0 +offset]= (z0 + z3)>>1;
1531
        block[stride*2 +offset]= (z1 + z2)>>1;
1532
        block[stride*8 +offset]= (z1 - z2)>>1;
1533
        block[stride*10+offset]= (z0 - z3)>>1;
1534
    }
1535
}
1536
#endif
1537

    
1538
#undef xStride
1539
#undef stride
1540

    
1541
static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
1542
    const int stride= 16*2;
1543
    const int xStride= 16;
1544
    int a,b,c,d,e;
1545

    
1546
    a= block[stride*0 + xStride*0];
1547
    b= block[stride*0 + xStride*1];
1548
    c= block[stride*1 + xStride*0];
1549
    d= block[stride*1 + xStride*1];
1550

    
1551
    e= a-b;
1552
    a= a+b;
1553
    b= c-d;
1554
    c= c+d;
1555

    
1556
    block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
1557
    block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
1558
    block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
1559
    block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
1560
}
1561

    
1562
#if 0
1563
static void chroma_dc_dct_c(DCTELEM *block){
1564
    const int stride= 16*2;
1565
    const int xStride= 16;
1566
    int a,b,c,d,e;
1567

1568
    a= block[stride*0 + xStride*0];
1569
    b= block[stride*0 + xStride*1];
1570
    c= block[stride*1 + xStride*0];
1571
    d= block[stride*1 + xStride*1];
1572

1573
    e= a-b;
1574
    a= a+b;
1575
    b= c-d;
1576
    c= c+d;
1577

1578
    block[stride*0 + xStride*0]= (a+c);
1579
    block[stride*0 + xStride*1]= (e+b);
1580
    block[stride*1 + xStride*0]= (a-c);
1581
    block[stride*1 + xStride*1]= (e-b);
1582
}
1583
#endif
1584

    
1585
/**
1586
 * gets the chroma qp.
1587
 */
1588
static inline int get_chroma_qp(H264Context *h, int t, int qscale){
1589
    return h->pps.chroma_qp_table[t][qscale];
1590
}
1591

    
1592
static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
1593
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1594
                           int src_x_offset, int src_y_offset,
1595
                           qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
1596
    MpegEncContext * const s = &h->s;
1597
    const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
1598
    int my=       h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
1599
    const int luma_xy= (mx&3) + ((my&3)<<2);
1600
    uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
1601
    uint8_t * src_cb, * src_cr;
1602
    int extra_width= h->emu_edge_width;
1603
    int extra_height= h->emu_edge_height;
1604
    int emu=0;
1605
    const int full_mx= mx>>2;
1606
    const int full_my= my>>2;
1607
    const int pic_width  = 16*s->mb_width;
1608
    const int pic_height = 16*s->mb_height >> MB_FIELD;
1609

    
1610
    if(mx&7) extra_width -= 3;
1611
    if(my&7) extra_height -= 3;
1612

    
1613
    if(   full_mx < 0-extra_width
1614
       || full_my < 0-extra_height
1615
       || full_mx + 16/*FIXME*/ > pic_width + extra_width
1616
       || full_my + 16/*FIXME*/ > pic_height + extra_height){
1617
        ff_emulated_edge_mc(s->edge_emu_buffer, src_y - 2 - 2*h->mb_linesize, h->mb_linesize, 16+5, 16+5/*FIXME*/, full_mx-2, full_my-2, pic_width, pic_height);
1618
            src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
1619
        emu=1;
1620
    }
1621

    
1622
    qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
1623
    if(!square){
1624
        qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
1625
    }
1626

    
1627
    if(ENABLE_GRAY && s->flags&CODEC_FLAG_GRAY) return;
1628

    
1629
    if(MB_FIELD){
1630
        // chroma offset when predicting from a field of opposite parity
1631
        my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
1632
        emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
1633
    }
1634
    src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
1635
    src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
1636

    
1637
    if(emu){
1638
        ff_emulated_edge_mc(s->edge_emu_buffer, src_cb, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
1639
            src_cb= s->edge_emu_buffer;
1640
    }
1641
    chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
1642

    
1643
    if(emu){
1644
        ff_emulated_edge_mc(s->edge_emu_buffer, src_cr, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
1645
            src_cr= s->edge_emu_buffer;
1646
    }
1647
    chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
1648
}
1649

    
1650
static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
1651
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1652
                           int x_offset, int y_offset,
1653
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1654
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
1655
                           int list0, int list1){
1656
    MpegEncContext * const s = &h->s;
1657
    qpel_mc_func *qpix_op=  qpix_put;
1658
    h264_chroma_mc_func chroma_op= chroma_put;
1659

    
1660
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
1661
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
1662
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
1663
    x_offset += 8*s->mb_x;
1664
    y_offset += 8*(s->mb_y >> MB_FIELD);
1665

    
1666
    if(list0){
1667
        Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
1668
        mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
1669
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
1670
                           qpix_op, chroma_op);
1671

    
1672
        qpix_op=  qpix_avg;
1673
        chroma_op= chroma_avg;
1674
    }
1675

    
1676
    if(list1){
1677
        Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
1678
        mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
1679
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
1680
                           qpix_op, chroma_op);
1681
    }
1682
}
1683

    
1684
static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
1685
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1686
                           int x_offset, int y_offset,
1687
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1688
                           h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
1689
                           h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
1690
                           int list0, int list1){
1691
    MpegEncContext * const s = &h->s;
1692

    
1693
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
1694
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
1695
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
1696
    x_offset += 8*s->mb_x;
1697
    y_offset += 8*(s->mb_y >> MB_FIELD);
1698

    
1699
    if(list0 && list1){
1700
        /* don't optimize for luma-only case, since B-frames usually
1701
         * use implicit weights => chroma too. */
1702
        uint8_t *tmp_cb = s->obmc_scratchpad;
1703
        uint8_t *tmp_cr = s->obmc_scratchpad + 8;
1704
        uint8_t *tmp_y  = s->obmc_scratchpad + 8*h->mb_uvlinesize;
1705
        int refn0 = h->ref_cache[0][ scan8[n] ];
1706
        int refn1 = h->ref_cache[1][ scan8[n] ];
1707

    
1708
        mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
1709
                    dest_y, dest_cb, dest_cr,
1710
                    x_offset, y_offset, qpix_put, chroma_put);
1711
        mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
1712
                    tmp_y, tmp_cb, tmp_cr,
1713
                    x_offset, y_offset, qpix_put, chroma_put);
1714

    
1715
        if(h->use_weight == 2){
1716
            int weight0 = h->implicit_weight[refn0][refn1];
1717
            int weight1 = 64 - weight0;
1718
            luma_weight_avg(  dest_y,  tmp_y,  h->  mb_linesize, 5, weight0, weight1, 0);
1719
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
1720
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
1721
        }else{
1722
            luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
1723
                            h->luma_weight[0][refn0], h->luma_weight[1][refn1],
1724
                            h->luma_offset[0][refn0] + h->luma_offset[1][refn1]);
1725
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1726
                            h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0],
1727
                            h->chroma_offset[0][refn0][0] + h->chroma_offset[1][refn1][0]);
1728
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1729
                            h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1],
1730
                            h->chroma_offset[0][refn0][1] + h->chroma_offset[1][refn1][1]);
1731
        }
1732
    }else{
1733
        int list = list1 ? 1 : 0;
1734
        int refn = h->ref_cache[list][ scan8[n] ];
1735
        Picture *ref= &h->ref_list[list][refn];
1736
        mc_dir_part(h, ref, n, square, chroma_height, delta, list,
1737
                    dest_y, dest_cb, dest_cr, x_offset, y_offset,
1738
                    qpix_put, chroma_put);
1739

    
1740
        luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
1741
                       h->luma_weight[list][refn], h->luma_offset[list][refn]);
1742
        if(h->use_weight_chroma){
1743
            chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1744
                             h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]);
1745
            chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1746
                             h->chroma_weight[list][refn][1], h->chroma_offset[list][refn][1]);
1747
        }
1748
    }
1749
}
1750

    
1751
static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
1752
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1753
                           int x_offset, int y_offset,
1754
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1755
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
1756
                           h264_weight_func *weight_op, h264_biweight_func *weight_avg,
1757
                           int list0, int list1){
1758
    if((h->use_weight==2 && list0 && list1
1759
        && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32))
1760
       || h->use_weight==1)
1761
        mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
1762
                         x_offset, y_offset, qpix_put, chroma_put,
1763
                         weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
1764
    else
1765
        mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
1766
                    x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
1767
}
1768

    
1769
static inline void prefetch_motion(H264Context *h, int list){
1770
    /* fetch pixels for estimated mv 4 macroblocks ahead
1771
     * optimized for 64byte cache lines */
1772
    MpegEncContext * const s = &h->s;
1773
    const int refn = h->ref_cache[list][scan8[0]];
1774
    if(refn >= 0){
1775
        const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
1776
        const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
1777
        uint8_t **src= h->ref_list[list][refn].data;
1778
        int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
1779
        s->dsp.prefetch(src[0]+off, s->linesize, 4);
1780
        off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
1781
        s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
1782
    }
1783
}
1784

    
1785
static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1786
                      qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
1787
                      qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
1788
                      h264_weight_func *weight_op, h264_biweight_func *weight_avg){
1789
    MpegEncContext * const s = &h->s;
1790
    const int mb_xy= h->mb_xy;
1791
    const int mb_type= s->current_picture.mb_type[mb_xy];
1792

    
1793
    assert(IS_INTER(mb_type));
1794

    
1795
    prefetch_motion(h, 0);
1796

    
1797
    if(IS_16X16(mb_type)){
1798
        mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
1799
                qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
1800
                &weight_op[0], &weight_avg[0],
1801
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1802
    }else if(IS_16X8(mb_type)){
1803
        mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
1804
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
1805
                &weight_op[1], &weight_avg[1],
1806
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1807
        mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
1808
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
1809
                &weight_op[1], &weight_avg[1],
1810
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
1811
    }else if(IS_8X16(mb_type)){
1812
        mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
1813
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1814
                &weight_op[2], &weight_avg[2],
1815
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1816
        mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
1817
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1818
                &weight_op[2], &weight_avg[2],
1819
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
1820
    }else{
1821
        int i;
1822

    
1823
        assert(IS_8X8(mb_type));
1824

    
1825
        for(i=0; i<4; i++){
1826
            const int sub_mb_type= h->sub_mb_type[i];
1827
            const int n= 4*i;
1828
            int x_offset= (i&1)<<2;
1829
            int y_offset= (i&2)<<1;
1830

    
1831
            if(IS_SUB_8X8(sub_mb_type)){
1832
                mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1833
                    qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1834
                    &weight_op[3], &weight_avg[3],
1835
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1836
            }else if(IS_SUB_8X4(sub_mb_type)){
1837
                mc_part(h, n  , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1838
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
1839
                    &weight_op[4], &weight_avg[4],
1840
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1841
                mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
1842
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
1843
                    &weight_op[4], &weight_avg[4],
1844
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1845
            }else if(IS_SUB_4X8(sub_mb_type)){
1846
                mc_part(h, n  , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1847
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1848
                    &weight_op[5], &weight_avg[5],
1849
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1850
                mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
1851
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1852
                    &weight_op[5], &weight_avg[5],
1853
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1854
            }else{
1855
                int j;
1856
                assert(IS_SUB_4X4(sub_mb_type));
1857
                for(j=0; j<4; j++){
1858
                    int sub_x_offset= x_offset + 2*(j&1);
1859
                    int sub_y_offset= y_offset +   (j&2);
1860
                    mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
1861
                        qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1862
                        &weight_op[6], &weight_avg[6],
1863
                        IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1864
                }
1865
            }
1866
        }
1867
    }
1868

    
1869
    prefetch_motion(h, 1);
1870
}
1871

    
1872
static av_cold void decode_init_vlc(void){
1873
    static int done = 0;
1874

    
1875
    if (!done) {
1876
        int i;
1877
        int offset;
1878
        done = 1;
1879

    
1880
        chroma_dc_coeff_token_vlc.table = chroma_dc_coeff_token_vlc_table;
1881
        chroma_dc_coeff_token_vlc.table_allocated = chroma_dc_coeff_token_vlc_table_size;
1882
        init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5,
1883
                 &chroma_dc_coeff_token_len [0], 1, 1,
1884
                 &chroma_dc_coeff_token_bits[0], 1, 1,
1885
                 INIT_VLC_USE_NEW_STATIC);
1886

    
1887
        offset = 0;
1888
        for(i=0; i<4; i++){
1889
            coeff_token_vlc[i].table = coeff_token_vlc_tables+offset;
1890
            coeff_token_vlc[i].table_allocated = coeff_token_vlc_tables_size[i];
1891
            init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17,
1892
                     &coeff_token_len [i][0], 1, 1,
1893
                     &coeff_token_bits[i][0], 1, 1,
1894
                     INIT_VLC_USE_NEW_STATIC);
1895
            offset += coeff_token_vlc_tables_size[i];
1896
        }
1897
        /*
1898
         * This is a one time safety check to make sure that
1899
         * the packed static coeff_token_vlc table sizes
1900
         * were initialized correctly.
1901
         */
1902
        assert(offset == FF_ARRAY_ELEMS(coeff_token_vlc_tables));
1903

    
1904
        for(i=0; i<3; i++){
1905
            chroma_dc_total_zeros_vlc[i].table = chroma_dc_total_zeros_vlc_tables[i];
1906
            chroma_dc_total_zeros_vlc[i].table_allocated = chroma_dc_total_zeros_vlc_tables_size;
1907
            init_vlc(&chroma_dc_total_zeros_vlc[i],
1908
                     CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4,
1909
                     &chroma_dc_total_zeros_len [i][0], 1, 1,
1910
                     &chroma_dc_total_zeros_bits[i][0], 1, 1,
1911
                     INIT_VLC_USE_NEW_STATIC);
1912
        }
1913
        for(i=0; i<15; i++){
1914
            total_zeros_vlc[i].table = total_zeros_vlc_tables[i];
1915
            total_zeros_vlc[i].table_allocated = total_zeros_vlc_tables_size;
1916
            init_vlc(&total_zeros_vlc[i],
1917
                     TOTAL_ZEROS_VLC_BITS, 16,
1918
                     &total_zeros_len [i][0], 1, 1,
1919
                     &total_zeros_bits[i][0], 1, 1,
1920
                     INIT_VLC_USE_NEW_STATIC);
1921
        }
1922

    
1923
        for(i=0; i<6; i++){
1924
            run_vlc[i].table = run_vlc_tables[i];
1925
            run_vlc[i].table_allocated = run_vlc_tables_size;
1926
            init_vlc(&run_vlc[i],
1927
                     RUN_VLC_BITS, 7,
1928
                     &run_len [i][0], 1, 1,
1929
                     &run_bits[i][0], 1, 1,
1930
                     INIT_VLC_USE_NEW_STATIC);
1931
        }
1932
        run7_vlc.table = run7_vlc_table,
1933
        run7_vlc.table_allocated = run7_vlc_table_size;
1934
        init_vlc(&run7_vlc, RUN7_VLC_BITS, 16,
1935
                 &run_len [6][0], 1, 1,
1936
                 &run_bits[6][0], 1, 1,
1937
                 INIT_VLC_USE_NEW_STATIC);
1938
    }
1939
}
1940

    
1941
static void free_tables(H264Context *h){
1942
    int i;
1943
    H264Context *hx;
1944
    av_freep(&h->intra4x4_pred_mode);
1945
    av_freep(&h->chroma_pred_mode_table);
1946
    av_freep(&h->cbp_table);
1947
    av_freep(&h->mvd_table[0]);
1948
    av_freep(&h->mvd_table[1]);
1949
    av_freep(&h->direct_table);
1950
    av_freep(&h->non_zero_count);
1951
    av_freep(&h->slice_table_base);
1952
    h->slice_table= NULL;
1953

    
1954
    av_freep(&h->mb2b_xy);
1955
    av_freep(&h->mb2b8_xy);
1956

    
1957
    for(i = 0; i < h->s.avctx->thread_count; i++) {
1958
        hx = h->thread_context[i];
1959
        if(!hx) continue;
1960
        av_freep(&hx->top_borders[1]);
1961
        av_freep(&hx->top_borders[0]);
1962
        av_freep(&hx->s.obmc_scratchpad);
1963
    }
1964
}
1965

    
1966
static void init_dequant8_coeff_table(H264Context *h){
1967
    int i,q,x;
1968
    const int transpose = (h->s.dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
1969
    h->dequant8_coeff[0] = h->dequant8_buffer[0];
1970
    h->dequant8_coeff[1] = h->dequant8_buffer[1];
1971

    
1972
    for(i=0; i<2; i++ ){
1973
        if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
1974
            h->dequant8_coeff[1] = h->dequant8_buffer[0];
1975
            break;
1976
        }
1977

    
1978
        for(q=0; q<52; q++){
1979
            int shift = div6[q];
1980
            int idx = rem6[q];
1981
            for(x=0; x<64; x++)
1982
                h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
1983
                    ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
1984
                    h->pps.scaling_matrix8[i][x]) << shift;
1985
        }
1986
    }
1987
}
1988

    
1989
static void init_dequant4_coeff_table(H264Context *h){
1990
    int i,j,q,x;
1991
    const int transpose = (h->s.dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
1992
    for(i=0; i<6; i++ ){
1993
        h->dequant4_coeff[i] = h->dequant4_buffer[i];
1994
        for(j=0; j<i; j++){
1995
            if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
1996
                h->dequant4_coeff[i] = h->dequant4_buffer[j];
1997
                break;
1998
            }
1999
        }
2000
        if(j<i)
2001
            continue;
2002

    
2003
        for(q=0; q<52; q++){
2004
            int shift = div6[q] + 2;
2005
            int idx = rem6[q];
2006
            for(x=0; x<16; x++)
2007
                h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
2008
                    ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
2009
                    h->pps.scaling_matrix4[i][x]) << shift;
2010
        }
2011
    }
2012
}
2013

    
2014
static void init_dequant_tables(H264Context *h){
2015
    int i,x;
2016
    init_dequant4_coeff_table(h);
2017
    if(h->pps.transform_8x8_mode)
2018
        init_dequant8_coeff_table(h);
2019
    if(h->sps.transform_bypass){
2020
        for(i=0; i<6; i++)
2021
            for(x=0; x<16; x++)
2022
                h->dequant4_coeff[i][0][x] = 1<<6;
2023
        if(h->pps.transform_8x8_mode)
2024
            for(i=0; i<2; i++)
2025
                for(x=0; x<64; x++)
2026
                    h->dequant8_coeff[i][0][x] = 1<<6;
2027
    }
2028
}
2029

    
2030

    
2031
/**
2032
 * allocates tables.
2033
 * needs width/height
2034
 */
2035
static int alloc_tables(H264Context *h){
2036
    MpegEncContext * const s = &h->s;
2037
    const int big_mb_num= s->mb_stride * (s->mb_height+1);
2038
    int x,y;
2039

    
2040
    CHECKED_ALLOCZ(h->intra4x4_pred_mode, big_mb_num * 8  * sizeof(uint8_t))
2041

    
2042
    CHECKED_ALLOCZ(h->non_zero_count    , big_mb_num * 16 * sizeof(uint8_t))
2043
    CHECKED_ALLOCZ(h->slice_table_base  , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base))
2044
    CHECKED_ALLOCZ(h->cbp_table, big_mb_num * sizeof(uint16_t))
2045

    
2046
    CHECKED_ALLOCZ(h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t))
2047
    CHECKED_ALLOCZ(h->mvd_table[0], 32*big_mb_num * sizeof(uint16_t));
2048
    CHECKED_ALLOCZ(h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t));
2049
    CHECKED_ALLOCZ(h->direct_table, 32*big_mb_num * sizeof(uint8_t));
2050

    
2051
    memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride)  * sizeof(*h->slice_table_base));
2052
    h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
2053

    
2054
    CHECKED_ALLOCZ(h->mb2b_xy  , big_mb_num * sizeof(uint32_t));
2055
    CHECKED_ALLOCZ(h->mb2b8_xy , big_mb_num * sizeof(uint32_t));
2056
    for(y=0; y<s->mb_height; y++){
2057
        for(x=0; x<s->mb_width; x++){
2058
            const int mb_xy= x + y*s->mb_stride;
2059
            const int b_xy = 4*x + 4*y*h->b_stride;
2060
            const int b8_xy= 2*x + 2*y*h->b8_stride;
2061

    
2062
            h->mb2b_xy [mb_xy]= b_xy;
2063
            h->mb2b8_xy[mb_xy]= b8_xy;
2064
        }
2065
    }
2066

    
2067
    s->obmc_scratchpad = NULL;
2068

    
2069
    if(!h->dequant4_coeff[0])
2070
        init_dequant_tables(h);
2071

    
2072
    return 0;
2073
fail:
2074
    free_tables(h);
2075
    return -1;
2076
}
2077

    
2078
/**
2079
 * Mimic alloc_tables(), but for every context thread.
2080
 */
2081
static void clone_tables(H264Context *dst, H264Context *src){
2082
    dst->intra4x4_pred_mode       = src->intra4x4_pred_mode;
2083
    dst->non_zero_count           = src->non_zero_count;
2084
    dst->slice_table              = src->slice_table;
2085
    dst->cbp_table                = src->cbp_table;
2086
    dst->mb2b_xy                  = src->mb2b_xy;
2087
    dst->mb2b8_xy                 = src->mb2b8_xy;
2088
    dst->chroma_pred_mode_table   = src->chroma_pred_mode_table;
2089
    dst->mvd_table[0]             = src->mvd_table[0];
2090
    dst->mvd_table[1]             = src->mvd_table[1];
2091
    dst->direct_table             = src->direct_table;
2092

    
2093
    dst->s.obmc_scratchpad = NULL;
2094
    ff_h264_pred_init(&dst->hpc, src->s.codec_id);
2095
}
2096

    
2097
/**
2098
 * Init context
2099
 * Allocate buffers which are not shared amongst multiple threads.
2100
 */
2101
static int context_init(H264Context *h){
2102
    CHECKED_ALLOCZ(h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t))
2103
    CHECKED_ALLOCZ(h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t))
2104

    
2105
    return 0;
2106
fail:
2107
    return -1; // free_tables will clean up for us
2108
}
2109

    
2110
static av_cold void common_init(H264Context *h){
2111
    MpegEncContext * const s = &h->s;
2112

    
2113
    s->width = s->avctx->width;
2114
    s->height = s->avctx->height;
2115
    s->codec_id= s->avctx->codec->id;
2116

    
2117
    ff_h264_pred_init(&h->hpc, s->codec_id);
2118

    
2119
    h->dequant_coeff_pps= -1;
2120
    s->unrestricted_mv=1;
2121
    s->decode=1; //FIXME
2122

    
2123
    memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
2124
    memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
2125
}
2126

    
2127
static av_cold int decode_init(AVCodecContext *avctx){
2128
    H264Context *h= avctx->priv_data;
2129
    MpegEncContext * const s = &h->s;
2130

    
2131
    MPV_decode_defaults(s);
2132

    
2133
    s->avctx = avctx;
2134
    common_init(h);
2135

    
2136
    s->out_format = FMT_H264;
2137
    s->workaround_bugs= avctx->workaround_bugs;
2138

    
2139
    // set defaults
2140
//    s->decode_mb= ff_h263_decode_mb;
2141
    s->quarter_sample = 1;
2142
    s->low_delay= 1;
2143

    
2144
    if(avctx->codec_id == CODEC_ID_SVQ3)
2145
        avctx->pix_fmt= PIX_FMT_YUVJ420P;
2146
    else
2147
        avctx->pix_fmt= PIX_FMT_YUV420P;
2148

    
2149
    decode_init_vlc();
2150

    
2151
    if(avctx->extradata_size > 0 && avctx->extradata &&
2152
       *(char *)avctx->extradata == 1){
2153
        h->is_avc = 1;
2154
        h->got_avcC = 0;
2155
    } else {
2156
        h->is_avc = 0;
2157
    }
2158

    
2159
    h->thread_context[0] = h;
2160
    h->outputed_poc = INT_MIN;
2161
    h->prev_poc_msb= 1<<16;
2162
    return 0;
2163
}
2164

    
2165
static int frame_start(H264Context *h){
2166
    MpegEncContext * const s = &h->s;
2167
    int i;
2168

    
2169
    if(MPV_frame_start(s, s->avctx) < 0)
2170
        return -1;
2171
    ff_er_frame_start(s);
2172
    /*
2173
     * MPV_frame_start uses pict_type to derive key_frame.
2174
     * This is incorrect for H.264; IDR markings must be used.
2175
     * Zero here; IDR markings per slice in frame or fields are ORed in later.
2176
     * See decode_nal_units().
2177
     */
2178
    s->current_picture_ptr->key_frame= 0;
2179

    
2180
    assert(s->linesize && s->uvlinesize);
2181

    
2182
    for(i=0; i<16; i++){
2183
        h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
2184
        h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
2185
    }
2186
    for(i=0; i<4; i++){
2187
        h->block_offset[16+i]=
2188
        h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2189
        h->block_offset[24+16+i]=
2190
        h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2191
    }
2192

    
2193
    /* can't be in alloc_tables because linesize isn't known there.
2194
     * FIXME: redo bipred weight to not require extra buffer? */
2195
    for(i = 0; i < s->avctx->thread_count; i++)
2196
        if(!h->thread_context[i]->s.obmc_scratchpad)
2197
            h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
2198

    
2199
    /* some macroblocks will be accessed before they're available */
2200
    if(FRAME_MBAFF || s->avctx->thread_count > 1)
2201
        memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
2202

    
2203
//    s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
2204

    
2205
    // We mark the current picture as non-reference after allocating it, so
2206
    // that if we break out due to an error it can be released automatically
2207
    // in the next MPV_frame_start().
2208
    // SVQ3 as well as most other codecs have only last/next/current and thus
2209
    // get released even with set reference, besides SVQ3 and others do not
2210
    // mark frames as reference later "naturally".
2211
    if(s->codec_id != CODEC_ID_SVQ3)
2212
        s->current_picture_ptr->reference= 0;
2213

    
2214
    s->current_picture_ptr->field_poc[0]=
2215
    s->current_picture_ptr->field_poc[1]= INT_MAX;
2216
    assert(s->current_picture_ptr->long_ref==0);
2217

    
2218
    return 0;
2219
}
2220

    
2221
static inline void backup_mb_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int simple){
2222
    MpegEncContext * const s = &h->s;
2223
    int i;
2224
    int step    = 1;
2225
    int offset  = 1;
2226
    int uvoffset= 1;
2227
    int top_idx = 1;
2228
    int skiplast= 0;
2229

    
2230
    src_y  -=   linesize;
2231
    src_cb -= uvlinesize;
2232
    src_cr -= uvlinesize;
2233

    
2234
    if(!simple && FRAME_MBAFF){
2235
        if(s->mb_y&1){
2236
            offset  = MB_MBAFF ? 1 : 17;
2237
            uvoffset= MB_MBAFF ? 1 : 9;
2238
            if(!MB_MBAFF){
2239
                *(uint64_t*)(h->top_borders[0][s->mb_x]+ 0)= *(uint64_t*)(src_y +  15*linesize);
2240
                *(uint64_t*)(h->top_borders[0][s->mb_x]+ 8)= *(uint64_t*)(src_y +8+15*linesize);
2241
                if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2242
                    *(uint64_t*)(h->top_borders[0][s->mb_x]+16)= *(uint64_t*)(src_cb+7*uvlinesize);
2243
                    *(uint64_t*)(h->top_borders[0][s->mb_x]+24)= *(uint64_t*)(src_cr+7*uvlinesize);
2244
                }
2245
            }
2246
        }else{
2247
            if(!MB_MBAFF){
2248
                h->left_border[0]= h->top_borders[0][s->mb_x][15];
2249
                if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2250
                    h->left_border[34   ]= h->top_borders[0][s->mb_x][16+7  ];
2251
                    h->left_border[34+18]= h->top_borders[0][s->mb_x][16+8+7];
2252
                }
2253
                skiplast= 1;
2254
            }
2255
            offset  =
2256
            uvoffset=
2257
            top_idx = MB_MBAFF ? 0 : 1;
2258
        }
2259
        step= MB_MBAFF ? 2 : 1;
2260
    }
2261

    
2262
    // There are two lines saved, the line above the the top macroblock of a pair,
2263
    // and the line above the bottom macroblock
2264
    h->left_border[offset]= h->top_borders[top_idx][s->mb_x][15];
2265
    for(i=1; i<17 - skiplast; i++){
2266
        h->left_border[offset+i*step]= src_y[15+i*  linesize];
2267
    }
2268

    
2269
    *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0)= *(uint64_t*)(src_y +  16*linesize);
2270
    *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8)= *(uint64_t*)(src_y +8+16*linesize);
2271

    
2272
    if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2273
        h->left_border[uvoffset+34   ]= h->top_borders[top_idx][s->mb_x][16+7];
2274
        h->left_border[uvoffset+34+18]= h->top_borders[top_idx][s->mb_x][24+7];
2275
        for(i=1; i<9 - skiplast; i++){
2276
            h->left_border[uvoffset+34   +i*step]= src_cb[7+i*uvlinesize];
2277
            h->left_border[uvoffset+34+18+i*step]= src_cr[7+i*uvlinesize];
2278
        }
2279
        *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16)= *(uint64_t*)(src_cb+8*uvlinesize);
2280
        *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24)= *(uint64_t*)(src_cr+8*uvlinesize);
2281
    }
2282
}
2283

    
2284
static inline void xchg_mb_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int xchg, int simple){
2285
    MpegEncContext * const s = &h->s;
2286
    int temp8, i;
2287
    uint64_t temp64;
2288
    int deblock_left;
2289
    int deblock_top;
2290
    int mb_xy;
2291
    int step    = 1;
2292
    int offset  = 1;
2293
    int uvoffset= 1;
2294
    int top_idx = 1;
2295

    
2296
    if(!simple && FRAME_MBAFF){
2297
        if(s->mb_y&1){
2298
            offset  = MB_MBAFF ? 1 : 17;
2299
            uvoffset= MB_MBAFF ? 1 : 9;
2300
        }else{
2301
            offset  =
2302
            uvoffset=
2303
            top_idx = MB_MBAFF ? 0 : 1;
2304
        }
2305
        step= MB_MBAFF ? 2 : 1;
2306
    }
2307

    
2308
    if(h->deblocking_filter == 2) {
2309
        mb_xy = h->mb_xy;
2310
        deblock_left = h->slice_table[mb_xy] == h->slice_table[mb_xy - 1];
2311
        deblock_top  = h->slice_table[mb_xy] == h->slice_table[h->top_mb_xy];
2312
    } else {
2313
        deblock_left = (s->mb_x > 0);
2314
        deblock_top =  (s->mb_y > !!MB_FIELD);
2315
    }
2316

    
2317
    src_y  -=   linesize + 1;
2318
    src_cb -= uvlinesize + 1;
2319
    src_cr -= uvlinesize + 1;
2320

    
2321
#define XCHG(a,b,t,xchg)\
2322
t= a;\
2323
if(xchg)\
2324
    a= b;\
2325
b= t;
2326

    
2327
    if(deblock_left){
2328
        for(i = !deblock_top; i<16; i++){
2329
            XCHG(h->left_border[offset+i*step], src_y [i*  linesize], temp8, xchg);
2330
        }
2331
        XCHG(h->left_border[offset+i*step], src_y [i*  linesize], temp8, 1);
2332
    }
2333

    
2334
    if(deblock_top){
2335
        XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg);
2336
        XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1);
2337
        if(s->mb_x+1 < s->mb_width){
2338
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x+1]), *(uint64_t*)(src_y +17), temp64, 1);
2339
        }
2340
    }
2341

    
2342
    if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2343
        if(deblock_left){
2344
            for(i = !deblock_top; i<8; i++){
2345
                XCHG(h->left_border[uvoffset+34   +i*step], src_cb[i*uvlinesize], temp8, xchg);
2346
                XCHG(h->left_border[uvoffset+34+18+i*step], src_cr[i*uvlinesize], temp8, xchg);
2347
            }
2348
            XCHG(h->left_border[uvoffset+34   +i*step], src_cb[i*uvlinesize], temp8, 1);
2349
            XCHG(h->left_border[uvoffset+34+18+i*step], src_cr[i*uvlinesize], temp8, 1);
2350
        }
2351
        if(deblock_top){
2352
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1);
2353
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1);
2354
        }
2355
    }
2356
}
2357

    
2358
static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
2359
    MpegEncContext * const s = &h->s;
2360
    const int mb_x= s->mb_x;
2361
    const int mb_y= s->mb_y;
2362
    const int mb_xy= h->mb_xy;
2363
    const int mb_type= s->current_picture.mb_type[mb_xy];
2364
    uint8_t  *dest_y, *dest_cb, *dest_cr;
2365
    int linesize, uvlinesize /*dct_offset*/;
2366
    int i;
2367
    int *block_offset = &h->block_offset[0];
2368
    const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
2369
    const int is_h264 = simple || s->codec_id == CODEC_ID_H264;
2370
    void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
2371
    void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
2372

    
2373
    dest_y  = s->current_picture.data[0] + (mb_x + mb_y * s->linesize  ) * 16;
2374
    dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
2375
    dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
2376

    
2377
    s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
2378
    s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
2379

    
2380
    if (!simple && MB_FIELD) {
2381
        linesize   = h->mb_linesize   = s->linesize * 2;
2382
        uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2383
        block_offset = &h->block_offset[24];
2384
        if(mb_y&1){ //FIXME move out of this function?
2385
            dest_y -= s->linesize*15;
2386
            dest_cb-= s->uvlinesize*7;
2387
            dest_cr-= s->uvlinesize*7;
2388
        }
2389
        if(FRAME_MBAFF) {
2390
            int list;
2391
            for(list=0; list<h->list_count; list++){
2392
                if(!USES_LIST(mb_type, list))
2393
                    continue;
2394
                if(IS_16X16(mb_type)){
2395
                    int8_t *ref = &h->ref_cache[list][scan8[0]];
2396
                    fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
2397
                }else{
2398
                    for(i=0; i<16; i+=4){
2399
                        int ref = h->ref_cache[list][scan8[i]];
2400
                        if(ref >= 0)
2401
                            fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
2402
                    }
2403
                }
2404
            }
2405
        }
2406
    } else {
2407
        linesize   = h->mb_linesize   = s->linesize;
2408
        uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2409
//        dct_offset = s->linesize * 16;
2410
    }
2411

    
2412
    if (!simple && IS_INTRA_PCM(mb_type)) {
2413
        for (i=0; i<16; i++) {
2414
            memcpy(dest_y + i*  linesize, h->mb       + i*8, 16);
2415
        }
2416
        for (i=0; i<8; i++) {
2417
            memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4,  8);
2418
            memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4,  8);
2419
        }
2420
    } else {
2421
        if(IS_INTRA(mb_type)){
2422
            if(h->deblocking_filter)
2423
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
2424

    
2425
            if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2426
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
2427
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
2428
            }
2429

    
2430
            if(IS_INTRA4x4(mb_type)){
2431
                if(simple || !s->encoding){
2432
                    if(IS_8x8DCT(mb_type)){
2433
                        if(transform_bypass){
2434
                            idct_dc_add =
2435
                            idct_add    = s->dsp.add_pixels8;
2436
                        }else{
2437
                            idct_dc_add = s->dsp.h264_idct8_dc_add;
2438
                            idct_add    = s->dsp.h264_idct8_add;
2439
                        }
2440
                        for(i=0; i<16; i+=4){
2441
                            uint8_t * const ptr= dest_y + block_offset[i];
2442
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2443
                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
2444
                                h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
2445
                            }else{
2446
                                const int nnz = h->non_zero_count_cache[ scan8[i] ];
2447
                                h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
2448
                                                            (h->topright_samples_available<<i)&0x4000, linesize);
2449
                                if(nnz){
2450
                                    if(nnz == 1 && h->mb[i*16])
2451
                                        idct_dc_add(ptr, h->mb + i*16, linesize);
2452
                                    else
2453
                                        idct_add   (ptr, h->mb + i*16, linesize);
2454
                                }
2455
                            }
2456
                        }
2457
                    }else{
2458
                        if(transform_bypass){
2459
                            idct_dc_add =
2460
                            idct_add    = s->dsp.add_pixels4;
2461
                        }else{
2462
                            idct_dc_add = s->dsp.h264_idct_dc_add;
2463
                            idct_add    = s->dsp.h264_idct_add;
2464
                        }
2465
                        for(i=0; i<16; i++){
2466
                            uint8_t * const ptr= dest_y + block_offset[i];
2467
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2468

    
2469
                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
2470
                                h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
2471
                            }else{
2472
                                uint8_t *topright;
2473
                                int nnz, tr;
2474
                                if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
2475
                                    const int topright_avail= (h->topright_samples_available<<i)&0x8000;
2476
                                    assert(mb_y || linesize <= block_offset[i]);
2477
                                    if(!topright_avail){
2478
                                        tr= ptr[3 - linesize]*0x01010101;
2479
                                        topright= (uint8_t*) &tr;
2480
                                    }else
2481
                                        topright= ptr + 4 - linesize;
2482
                                }else
2483
                                    topright= NULL;
2484

    
2485
                                h->hpc.pred4x4[ dir ](ptr, topright, linesize);
2486
                                nnz = h->non_zero_count_cache[ scan8[i] ];
2487
                                if(nnz){
2488
                                    if(is_h264){
2489
                                        if(nnz == 1 && h->mb[i*16])
2490
                                            idct_dc_add(ptr, h->mb + i*16, linesize);
2491
                                        else
2492
                                            idct_add   (ptr, h->mb + i*16, linesize);
2493
                                    }else
2494
                                        svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
2495
                                }
2496
                            }
2497
                        }
2498
                    }
2499
                }
2500
            }else{
2501
                h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
2502
                if(is_h264){
2503
                    if(!transform_bypass)
2504
                        h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
2505
                }else
2506
                    svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
2507
            }
2508
            if(h->deblocking_filter)
2509
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
2510
        }else if(is_h264){
2511
            hl_motion(h, dest_y, dest_cb, dest_cr,
2512
                      s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
2513
                      s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
2514
                      s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab);
2515
        }
2516

    
2517

    
2518
        if(!IS_INTRA4x4(mb_type)){
2519
            if(is_h264){
2520
                if(IS_INTRA16x16(mb_type)){
2521
                    if(transform_bypass){
2522
                        if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
2523
                            h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
2524
                        }else{
2525
                            for(i=0; i<16; i++){
2526
                                if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
2527
                                    s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
2528
                            }
2529
                        }
2530
                    }else{
2531
                         s->dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
2532
                    }
2533
                }else if(h->cbp&15){
2534
                    if(transform_bypass){
2535
                        const int di = IS_8x8DCT(mb_type) ? 4 : 1;
2536
                        idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
2537
                        for(i=0; i<16; i+=di){
2538
                            if(h->non_zero_count_cache[ scan8[i] ]){
2539
                                idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2540
                            }
2541
                        }
2542
                    }else{
2543
                        if(IS_8x8DCT(mb_type)){
2544
                            s->dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
2545
                        }else{
2546
                            s->dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
2547
                        }
2548
                    }
2549
                }
2550
            }else{
2551
                for(i=0; i<16; i++){
2552
                    if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
2553
                        uint8_t * const ptr= dest_y + block_offset[i];
2554
                        svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
2555
                    }
2556
                }
2557
            }
2558
        }
2559

    
2560
        if((simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
2561
            uint8_t *dest[2] = {dest_cb, dest_cr};
2562
            if(transform_bypass){
2563
                if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
2564
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
2565
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
2566
                }else{
2567
                    idct_add = s->dsp.add_pixels4;
2568
                    for(i=16; i<16+8; i++){
2569
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
2570
                            idct_add   (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
2571
                    }
2572
                }
2573
            }else{
2574
                chroma_dc_dequant_idct_c(h->mb + 16*16, h->chroma_qp[0], h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
2575
                chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp[1], h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp[1]][0]);
2576
                if(is_h264){
2577
                    idct_add = s->dsp.h264_idct_add;
2578
                    idct_dc_add = s->dsp.h264_idct_dc_add;
2579
                    for(i=16; i<16+8; i++){
2580
                        if(h->non_zero_count_cache[ scan8[i] ])
2581
                            idct_add   (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
2582
                        else if(h->mb[i*16])
2583
                            idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
2584
                    }
2585
                }else{
2586
                    for(i=16; i<16+8; i++){
2587
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2588
                            uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
2589
                            svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
2590
                        }
2591
                    }
2592
                }
2593
            }
2594
        }
2595
    }
2596
    if(h->deblocking_filter) {
2597
        backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, simple);
2598
        fill_caches(h, mb_type, 1); //FIXME don't fill stuff which isn't used by filter_mb
2599
        h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2600
        h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2601
        if (!simple && FRAME_MBAFF) {
2602
            filter_mb     (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2603
        } else {
2604
            filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2605
        }
2606
    }
2607
}
2608

    
2609
/**
2610
 * Process a macroblock; this case avoids checks for expensive uncommon cases.
2611
 */
2612
static void hl_decode_mb_simple(H264Context *h){
2613
    hl_decode_mb_internal(h, 1);
2614
}
2615

    
2616
/**
2617
 * Process a macroblock; this handles edge cases, such as interlacing.
2618
 */
2619
static void av_noinline hl_decode_mb_complex(H264Context *h){
2620
    hl_decode_mb_internal(h, 0);
2621
}
2622

    
2623
static void hl_decode_mb(H264Context *h){
2624
    MpegEncContext * const s = &h->s;
2625
    const int mb_xy= h->mb_xy;
2626
    const int mb_type= s->current_picture.mb_type[mb_xy];
2627
    int is_complex = ENABLE_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
2628

    
2629
    if(ENABLE_H264_ENCODER && !s->decode)
2630
        return;
2631

    
2632
    if (is_complex)
2633
        hl_decode_mb_complex(h);
2634
    else hl_decode_mb_simple(h);
2635
}
2636

    
2637
static void pic_as_field(Picture *pic, const int parity){
2638
    int i;
2639
    for (i = 0; i < 4; ++i) {
2640
        if (parity == PICT_BOTTOM_FIELD)
2641
            pic->data[i] += pic->linesize[i];
2642
        pic->reference = parity;
2643
        pic->linesize[i] *= 2;
2644
    }
2645
    pic->poc= pic->field_poc[parity == PICT_BOTTOM_FIELD];
2646
}
2647

    
2648
static int split_field_copy(Picture *dest, Picture *src,
2649
                            int parity, int id_add){
2650
    int match = !!(src->reference & parity);
2651

    
2652
    if (match) {
2653
        *dest = *src;
2654
        if(parity != PICT_FRAME){
2655
            pic_as_field(dest, parity);
2656
            dest->pic_id *= 2;
2657
            dest->pic_id += id_add;
2658
        }
2659
    }
2660

    
2661
    return match;
2662
}
2663

    
2664
static int build_def_list(Picture *def, Picture **in, int len, int is_long, int sel){
2665
    int i[2]={0};
2666
    int index=0;
2667

    
2668
    while(i[0]<len || i[1]<len){
2669
        while(i[0]<len && !(in[ i[0] ] && (in[ i[0] ]->reference & sel)))
2670
            i[0]++;
2671
        while(i[1]<len && !(in[ i[1] ] && (in[ i[1] ]->reference & (sel^3))))
2672
            i[1]++;
2673
        if(i[0] < len){
2674
            in[ i[0] ]->pic_id= is_long ? i[0] : in[ i[0] ]->frame_num;
2675
            split_field_copy(&def[index++], in[ i[0]++ ], sel  , 1);
2676
        }
2677
        if(i[1] < len){
2678
            in[ i[1] ]->pic_id= is_long ? i[1] : in[ i[1] ]->frame_num;
2679
            split_field_copy(&def[index++], in[ i[1]++ ], sel^3, 0);
2680
        }
2681
    }
2682

    
2683
    return index;
2684
}
2685

    
2686
static int add_sorted(Picture **sorted, Picture **src, int len, int limit, int dir){
2687
    int i, best_poc;
2688
    int out_i= 0;
2689

    
2690
    for(;;){
2691
        best_poc= dir ? INT_MIN : INT_MAX;
2692

    
2693
        for(i=0; i<len; i++){
2694
            const int poc= src[i]->poc;
2695
            if(((poc > limit) ^ dir) && ((poc < best_poc) ^ dir)){
2696
                best_poc= poc;
2697
                sorted[out_i]= src[i];
2698
            }
2699
        }
2700
        if(best_poc == (dir ? INT_MIN : INT_MAX))
2701
            break;
2702
        limit= sorted[out_i++]->poc - dir;
2703
    }
2704
    return out_i;
2705
}
2706

    
2707
/**
2708
 * fills the default_ref_list.
2709
 */
2710
static int fill_default_ref_list(H264Context *h){
2711
    MpegEncContext * const s = &h->s;
2712
    int i, len;
2713

    
2714
    if(h->slice_type_nos==FF_B_TYPE){
2715
        Picture *sorted[32];
2716
        int cur_poc, list;
2717
        int lens[2];
2718

    
2719
        if(FIELD_PICTURE)
2720
            cur_poc= s->current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ];
2721
        else
2722
            cur_poc= s->current_picture_ptr->poc;
2723

    
2724
        for(list= 0; list<2; list++){
2725
            len= add_sorted(sorted    , h->short_ref, h->short_ref_count, cur_poc, 1^list);
2726
            len+=add_sorted(sorted+len, h->short_ref, h->short_ref_count, cur_poc, 0^list);
2727
            assert(len<=32);
2728
            len= build_def_list(h->default_ref_list[list]    , sorted     , len, 0, s->picture_structure);
2729
            len+=build_def_list(h->default_ref_list[list]+len, h->long_ref, 16 , 1, s->picture_structure);
2730
            assert(len<=32);
2731

    
2732
            if(len < h->ref_count[list])
2733
                memset(&h->default_ref_list[list][len], 0, sizeof(Picture)*(h->ref_count[list] - len));
2734
            lens[list]= len;
2735
        }
2736

    
2737
        if(lens[0] == lens[1] && lens[1] > 1){
2738
            for(i=0; h->default_ref_list[0][i].data[0] == h->default_ref_list[1][i].data[0] && i<lens[0]; i++);
2739
            if(i == lens[0])
2740
                FFSWAP(Picture, h->default_ref_list[1][0], h->default_ref_list[1][1]);
2741
        }
2742
    }else{
2743
        len = build_def_list(h->default_ref_list[0]    , h->short_ref, h->short_ref_count, 0, s->picture_structure);
2744
        len+= build_def_list(h->default_ref_list[0]+len, h-> long_ref, 16                , 1, s->picture_structure);
2745
        assert(len <= 32);
2746
        if(len < h->ref_count[0])
2747
            memset(&h->default_ref_list[0][len], 0, sizeof(Picture)*(h->ref_count[0] - len));
2748
    }
2749
#ifdef TRACE
2750
    for (i=0; i<h->ref_count[0]; i++) {
2751
        tprintf(h->s.avctx, "List0: %s fn:%d 0x%p\n", (h->default_ref_list[0][i].long_ref ? "LT" : "ST"), h->default_ref_list[0][i].pic_id, h->default_ref_list[0][i].data[0]);
2752
    }
2753
    if(h->slice_type_nos==FF_B_TYPE){
2754
        for (i=0; i<h->ref_count[1]; i++) {
2755
            tprintf(h->s.avctx, "List1: %s fn:%d 0x%p\n", (h->default_ref_list[1][i].long_ref ? "LT" : "ST"), h->default_ref_list[1][i].pic_id, h->default_ref_list[1][i].data[0]);
2756
        }
2757
    }
2758
#endif
2759
    return 0;
2760
}
2761

    
2762
static void print_short_term(H264Context *h);
2763
static void print_long_term(H264Context *h);
2764

    
2765
/**
2766
 * Extract structure information about the picture described by pic_num in
2767
 * the current decoding context (frame or field). Note that pic_num is
2768
 * picture number without wrapping (so, 0<=pic_num<max_pic_num).
2769
 * @param pic_num picture number for which to extract structure information
2770
 * @param structure one of PICT_XXX describing structure of picture
2771
 *                      with pic_num
2772
 * @return frame number (short term) or long term index of picture
2773
 *         described by pic_num
2774
 */
2775
static int pic_num_extract(H264Context *h, int pic_num, int *structure){
2776
    MpegEncContext * const s = &h->s;
2777

    
2778
    *structure = s->picture_structure;
2779
    if(FIELD_PICTURE){
2780
        if (!(pic_num & 1))
2781
            /* opposite field */
2782
            *structure ^= PICT_FRAME;
2783
        pic_num >>= 1;
2784
    }
2785

    
2786
    return pic_num;
2787
}
2788

    
2789
static int decode_ref_pic_list_reordering(H264Context *h){
2790
    MpegEncContext * const s = &h->s;
2791
    int list, index, pic_structure;
2792

    
2793
    print_short_term(h);
2794
    print_long_term(h);
2795

    
2796
    for(list=0; list<h->list_count; list++){
2797
        memcpy(h->ref_list[list], h->default_ref_list[list], sizeof(Picture)*h->ref_count[list]);
2798

    
2799
        if(get_bits1(&s->gb)){
2800
            int pred= h->curr_pic_num;
2801

    
2802
            for(index=0; ; index++){
2803
                unsigned int reordering_of_pic_nums_idc= get_ue_golomb(&s->gb);
2804
                unsigned int pic_id;
2805
                int i;
2806
                Picture *ref = NULL;
2807

    
2808
                if(reordering_of_pic_nums_idc==3)
2809
                    break;
2810

    
2811
                if(index >= h->ref_count[list]){
2812
                    av_log(h->s.avctx, AV_LOG_ERROR, "reference count overflow\n");
2813
                    return -1;
2814
                }
2815

    
2816
                if(reordering_of_pic_nums_idc<3){
2817
                    if(reordering_of_pic_nums_idc<2){
2818
                        const unsigned int abs_diff_pic_num= get_ue_golomb(&s->gb) + 1;
2819
                        int frame_num;
2820

    
2821
                        if(abs_diff_pic_num > h->max_pic_num){
2822
                            av_log(h->s.avctx, AV_LOG_ERROR, "abs_diff_pic_num overflow\n");
2823
                            return -1;
2824
                        }
2825

    
2826
                        if(reordering_of_pic_nums_idc == 0) pred-= abs_diff_pic_num;
2827
                        else                                pred+= abs_diff_pic_num;
2828
                        pred &= h->max_pic_num - 1;
2829

    
2830
                        frame_num = pic_num_extract(h, pred, &pic_structure);
2831

    
2832
                        for(i= h->short_ref_count-1; i>=0; i--){
2833
                            ref = h->short_ref[i];
2834
                            assert(ref->reference);
2835
                            assert(!ref->long_ref);
2836
                            if(
2837
                                   ref->frame_num == frame_num &&
2838
                                   (ref->reference & pic_structure)
2839
                              )
2840
                                break;
2841
                        }
2842
                        if(i>=0)
2843
                            ref->pic_id= pred;
2844
                    }else{
2845
                        int long_idx;
2846
                        pic_id= get_ue_golomb(&s->gb); //long_term_pic_idx
2847

    
2848
                        long_idx= pic_num_extract(h, pic_id, &pic_structure);
2849

    
2850
                        if(long_idx>31){
2851
                            av_log(h->s.avctx, AV_LOG_ERROR, "long_term_pic_idx overflow\n");
2852
                            return -1;
2853
                        }
2854
                        ref = h->long_ref[long_idx];
2855
                        assert(!(ref && !ref->reference));
2856
                        if(ref && (ref->reference & pic_structure)){
2857
                            ref->pic_id= pic_id;
2858
                            assert(ref->long_ref);
2859
                            i=0;
2860
                        }else{
2861
                            i=-1;
2862
                        }
2863
                    }
2864

    
2865
                    if (i < 0) {
2866
                        av_log(h->s.avctx, AV_LOG_ERROR, "reference picture missing during reorder\n");
2867
                        memset(&h->ref_list[list][index], 0, sizeof(Picture)); //FIXME
2868
                    } else {
2869
                        for(i=index; i+1<h->ref_count[list]; i++){
2870
                            if(ref->long_ref == h->ref_list[list][i].long_ref && ref->pic_id == h->ref_list[list][i].pic_id)
2871
                                break;
2872
                        }
2873
                        for(; i > index; i--){
2874
                            h->ref_list[list][i]= h->ref_list[list][i-1];
2875
                        }
2876
                        h->ref_list[list][index]= *ref;
2877
                        if (FIELD_PICTURE){
2878
                            pic_as_field(&h->ref_list[list][index], pic_structure);
2879
                        }
2880
                    }
2881
                }else{
2882
                    av_log(h->s.avctx, AV_LOG_ERROR, "illegal reordering_of_pic_nums_idc\n");
2883
                    return -1;
2884
                }
2885
            }
2886
        }
2887
    }
2888
    for(list=0; list<h->list_count; list++){
2889
        for(index= 0; index < h->ref_count[list]; index++){
2890
            if(!h->ref_list[list][index].data[0]){
2891
                av_log(h->s.avctx, AV_LOG_ERROR, "Missing reference picture\n");
2892
                h->ref_list[list][index]= s->current_picture; //FIXME this is not a sensible solution
2893
            }
2894
        }
2895
    }
2896

    
2897
    return 0;
2898
}
2899

    
2900
static void fill_mbaff_ref_list(H264Context *h){
2901
    int list, i, j;
2902
    for(list=0; list<2; list++){ //FIXME try list_count
2903
        for(i=0; i<h->ref_count[list]; i++){
2904
            Picture *frame = &h->ref_list[list][i];
2905
            Picture *field = &h->ref_list[list][16+2*i];
2906
            field[0] = *frame;
2907
            for(j=0; j<3; j++)
2908
                field[0].linesize[j] <<= 1;
2909
            field[0].reference = PICT_TOP_FIELD;
2910
            field[0].poc= field[0].field_poc[0];
2911
            field[1] = field[0];
2912
            for(j=0; j<3; j++)
2913
                field[1].data[j] += frame->linesize[j];
2914
            field[1].reference = PICT_BOTTOM_FIELD;
2915
            field[1].poc= field[1].field_poc[1];
2916

    
2917
            h->luma_weight[list][16+2*i] = h->luma_weight[list][16+2*i+1] = h->luma_weight[list][i];
2918
            h->luma_offset[list][16+2*i] = h->luma_offset[list][16+2*i+1] = h->luma_offset[list][i];
2919
            for(j=0; j<2; j++){
2920
                h->chroma_weight[list][16+2*i][j] = h->chroma_weight[list][16+2*i+1][j] = h->chroma_weight[list][i][j];
2921
                h->chroma_offset[list][16+2*i][j] = h->chroma_offset[list][16+2*i+1][j] = h->chroma_offset[list][i][j];
2922
            }
2923
        }
2924
    }
2925
    for(j=0; j<h->ref_count[1]; j++){
2926
        for(i=0; i<h->ref_count[0]; i++)
2927
            h->implicit_weight[j][16+2*i] = h->implicit_weight[j][16+2*i+1] = h->implicit_weight[j][i];
2928
        memcpy(h->implicit_weight[16+2*j],   h->implicit_weight[j], sizeof(*h->implicit_weight));
2929
        memcpy(h->implicit_weight[16+2*j+1], h->implicit_weight[j], sizeof(*h->implicit_weight));
2930
    }
2931
}
2932

    
2933
static int pred_weight_table(H264Context *h){
2934
    MpegEncContext * const s = &h->s;
2935
    int list, i;
2936
    int luma_def, chroma_def;
2937

    
2938
    h->use_weight= 0;
2939
    h->use_weight_chroma= 0;
2940
    h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
2941
    h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
2942
    luma_def = 1<<h->luma_log2_weight_denom;
2943
    chroma_def = 1<<h->chroma_log2_weight_denom;
2944

    
2945
    for(list=0; list<2; list++){
2946
        for(i=0; i<h->ref_count[list]; i++){
2947
            int luma_weight_flag, chroma_weight_flag;
2948

    
2949
            luma_weight_flag= get_bits1(&s->gb);
2950
            if(luma_weight_flag){
2951
                h->luma_weight[list][i]= get_se_golomb(&s->gb);
2952
                h->luma_offset[list][i]= get_se_golomb(&s->gb);
2953
                if(   h->luma_weight[list][i] != luma_def
2954
                   || h->luma_offset[list][i] != 0)
2955
                    h->use_weight= 1;
2956
            }else{
2957
                h->luma_weight[list][i]= luma_def;
2958
                h->luma_offset[list][i]= 0;
2959
            }
2960

    
2961
            if(CHROMA){
2962
                chroma_weight_flag= get_bits1(&s->gb);
2963
                if(chroma_weight_flag){
2964
                    int j;
2965
                    for(j=0; j<2; j++){
2966
                        h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
2967
                        h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
2968
                        if(   h->chroma_weight[list][i][j] != chroma_def
2969
                        || h->chroma_offset[list][i][j] != 0)
2970
                            h->use_weight_chroma= 1;
2971
                    }
2972
                }else{
2973
                    int j;
2974
                    for(j=0; j<2; j++){
2975
                        h->chroma_weight[list][i][j]= chroma_def;
2976
                        h->chroma_offset[list][i][j]= 0;
2977
                    }
2978
                }
2979
            }
2980
        }
2981
        if(h->slice_type_nos != FF_B_TYPE) break;
2982
    }
2983
    h->use_weight= h->use_weight || h->use_weight_chroma;
2984
    return 0;
2985
}
2986

    
2987
static void implicit_weight_table(H264Context *h){
2988
    MpegEncContext * const s = &h->s;
2989
    int ref0, ref1;
2990
    int cur_poc = s->current_picture_ptr->poc;
2991

    
2992
    if(   h->ref_count[0] == 1 && h->ref_count[1] == 1
2993
       && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
2994
        h->use_weight= 0;
2995
        h->use_weight_chroma= 0;
2996
        return;
2997
    }
2998

    
2999
    h->use_weight= 2;
3000
    h->use_weight_chroma= 2;
3001
    h->luma_log2_weight_denom= 5;
3002
    h->chroma_log2_weight_denom= 5;
3003

    
3004
    for(ref0=0; ref0 < h->ref_count[0]; ref0++){
3005
        int poc0 = h->ref_list[0][ref0].poc;
3006
        for(ref1=0; ref1 < h->ref_count[1]; ref1++){
3007
            int poc1 = h->ref_list[1][ref1].poc;
3008
            int td = av_clip(poc1 - poc0, -128, 127);
3009
            if(td){
3010
                int tb = av_clip(cur_poc - poc0, -128, 127);
3011
                int tx = (16384 + (FFABS(td) >> 1)) / td;
3012
                int dist_scale_factor = av_clip((tb*tx + 32) >> 6, -1024, 1023) >> 2;
3013
                if(dist_scale_factor < -64 || dist_scale_factor > 128)
3014
                    h->implicit_weight[ref0][ref1] = 32;
3015
                else
3016
                    h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor;
3017
            }else
3018
                h->implicit_weight[ref0][ref1] = 32;
3019
        }
3020
    }
3021
}
3022

    
3023
/**
3024
 * Mark a picture as no longer needed for reference. The refmask
3025
 * argument allows unreferencing of individual fields or the whole frame.
3026
 * If the picture becomes entirely unreferenced, but is being held for
3027
 * display purposes, it is marked as such.
3028
 * @param refmask mask of fields to unreference; the mask is bitwise
3029
 *                anded with the reference marking of pic
3030
 * @return non-zero if pic becomes entirely unreferenced (except possibly
3031
 *         for display purposes) zero if one of the fields remains in
3032
 *         reference
3033
 */
3034
static inline int unreference_pic(H264Context *h, Picture *pic, int refmask){
3035
    int i;
3036
    if (pic->reference &= refmask) {
3037
        return 0;
3038
    } else {
3039
        for(i = 0; h->delayed_pic[i]; i++)
3040
            if(pic == h->delayed_pic[i]){
3041
                pic->reference=DELAYED_PIC_REF;
3042
                break;
3043
            }
3044
        return 1;
3045
    }
3046
}
3047

    
3048
/**
3049
 * instantaneous decoder refresh.
3050
 */
3051
static void idr(H264Context *h){
3052
    int i;
3053

    
3054
    for(i=0; i<16; i++){
3055
        remove_long(h, i, 0);
3056
    }
3057
    assert(h->long_ref_count==0);
3058

    
3059
    for(i=0; i<h->short_ref_count; i++){
3060
        unreference_pic(h, h->short_ref[i], 0);
3061
        h->short_ref[i]= NULL;
3062
    }
3063
    h->short_ref_count=0;
3064
    h->prev_frame_num= 0;
3065
    h->prev_frame_num_offset= 0;
3066
    h->prev_poc_msb=
3067
    h->prev_poc_lsb= 0;
3068
}
3069

    
3070
/* forget old pics after a seek */
3071
static void flush_dpb(AVCodecContext *avctx){
3072
    H264Context *h= avctx->priv_data;
3073
    int i;
3074
    for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
3075
        if(h->delayed_pic[i])
3076
            h->delayed_pic[i]->reference= 0;
3077
        h->delayed_pic[i]= NULL;
3078
    }
3079
    h->outputed_poc= INT_MIN;
3080
    idr(h);
3081
    if(h->s.current_picture_ptr)
3082
        h->s.current_picture_ptr->reference= 0;
3083
    h->s.first_field= 0;
3084
    ff_mpeg_flush(avctx);
3085
}
3086

    
3087
/**
3088
 * Find a Picture in the short term reference list by frame number.
3089
 * @param frame_num frame number to search for
3090
 * @param idx the index into h->short_ref where returned picture is found
3091
 *            undefined if no picture found.
3092
 * @return pointer to the found picture, or NULL if no pic with the provided
3093
 *                 frame number is found
3094
 */
3095
static Picture * find_short(H264Context *h, int frame_num, int *idx){
3096
    MpegEncContext * const s = &h->s;
3097
    int i;
3098

    
3099
    for(i=0; i<h->short_ref_count; i++){
3100
        Picture *pic= h->short_ref[i];
3101
        if(s->avctx->debug&FF_DEBUG_MMCO)
3102
            av_log(h->s.avctx, AV_LOG_DEBUG, "%d %d %p\n", i, pic->frame_num, pic);
3103
        if(pic->frame_num == frame_num) {
3104
            *idx = i;
3105
            return pic;
3106
        }
3107
    }
3108
    return NULL;
3109
}
3110

    
3111
/**
3112
 * Remove a picture from the short term reference list by its index in
3113
 * that list.  This does no checking on the provided index; it is assumed
3114
 * to be valid. Other list entries are shifted down.
3115
 * @param i index into h->short_ref of picture to remove.
3116
 */
3117
static void remove_short_at_index(H264Context *h, int i){
3118
    assert(i >= 0 && i < h->short_ref_count);
3119
    h->short_ref[i]= NULL;
3120
    if (--h->short_ref_count)
3121
        memmove(&h->short_ref[i], &h->short_ref[i+1], (h->short_ref_count - i)*sizeof(Picture*));
3122
}
3123

    
3124
/**
3125
 *
3126
 * @return the removed picture or NULL if an error occurs
3127
 */
3128
static Picture * remove_short(H264Context *h, int frame_num, int ref_mask){
3129
    MpegEncContext * const s = &h->s;
3130
    Picture *pic;
3131
    int i;
3132

    
3133
    if(s->avctx->debug&FF_DEBUG_MMCO)
3134
        av_log(h->s.avctx, AV_LOG_DEBUG, "remove short %d count %d\n", frame_num, h->short_ref_count);
3135

    
3136
    pic = find_short(h, frame_num, &i);
3137
    if (pic){
3138
        if(unreference_pic(h, pic, ref_mask))
3139
        remove_short_at_index(h, i);
3140
    }
3141

    
3142
    return pic;
3143
}
3144

    
3145
/**
3146
 * Remove a picture from the long term reference list by its index in
3147
 * that list.
3148
 * @return the removed picture or NULL if an error occurs
3149
 */
3150
static Picture * remove_long(H264Context *h, int i, int ref_mask){
3151
    Picture *pic;
3152

    
3153
    pic= h->long_ref[i];
3154
    if (pic){
3155
        if(unreference_pic(h, pic, ref_mask)){
3156
            assert(h->long_ref[i]->long_ref == 1);
3157
            h->long_ref[i]->long_ref= 0;
3158
            h->long_ref[i]= NULL;
3159
            h->long_ref_count--;
3160
        }
3161
    }
3162

    
3163
    return pic;
3164
}
3165

    
3166
/**
3167
 * print short term list
3168
 */
3169
static void print_short_term(H264Context *h) {
3170
    uint32_t i;
3171
    if(h->s.avctx->debug&FF_DEBUG_MMCO) {
3172
        av_log(h->s.avctx, AV_LOG_DEBUG, "short term list:\n");
3173
        for(i=0; i<h->short_ref_count; i++){
3174
            Picture *pic= h->short_ref[i];
3175
            av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]);
3176
        }
3177
    }
3178
}
3179

    
3180
/**
3181
 * print long term list
3182
 */
3183
static void print_long_term(H264Context *h) {
3184
    uint32_t i;
3185
    if(h->s.avctx->debug&FF_DEBUG_MMCO) {
3186
        av_log(h->s.avctx, AV_LOG_DEBUG, "long term list:\n");
3187
        for(i = 0; i < 16; i++){
3188
            Picture *pic= h->long_ref[i];
3189
            if (pic) {
3190
                av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]);
3191
            }
3192
        }
3193
    }
3194
}
3195

    
3196
/**
3197
 * Executes the reference picture marking (memory management control operations).
3198
 */
3199
static int execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){
3200
    MpegEncContext * const s = &h->s;
3201
    int i, j;
3202
    int current_ref_assigned=0;
3203
    Picture *pic;
3204

    
3205
    if((s->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0)
3206
        av_log(h->s.avctx, AV_LOG_DEBUG, "no mmco here\n");
3207

    
3208
    for(i=0; i<mmco_count; i++){
3209
        int structure, frame_num;
3210
        if(s->avctx->debug&FF_DEBUG_MMCO)
3211
            av_log(h->s.avctx, AV_LOG_DEBUG, "mmco:%d %d %d\n", h->mmco[i].opcode, h->mmco[i].short_pic_num, h->mmco[i].long_arg);
3212

    
3213
        if(   mmco[i].opcode == MMCO_SHORT2UNUSED
3214
           || mmco[i].opcode == MMCO_SHORT2LONG){
3215
            frame_num = pic_num_extract(h, mmco[i].short_pic_num, &structure);
3216
            pic = find_short(h, frame_num, &j);
3217
            if(!pic){
3218
                if(mmco[i].opcode != MMCO_SHORT2LONG || !h->long_ref[mmco[i].long_arg]
3219
                   || h->long_ref[mmco[i].long_arg]->frame_num != frame_num)
3220
                av_log(h->s.avctx, AV_LOG_ERROR, "mmco: unref short failure\n");
3221
                continue;
3222
            }
3223
        }
3224

    
3225
        switch(mmco[i].opcode){
3226
        case MMCO_SHORT2UNUSED:
3227
            if(s->avctx->debug&FF_DEBUG_MMCO)
3228
                av_log(h->s.avctx, AV_LOG_DEBUG, "mmco: unref short %d count %d\n", h->mmco[i].short_pic_num, h->short_ref_count);
3229
            remove_short(h, frame_num, structure ^ PICT_FRAME);
3230
            break;
3231
        case MMCO_SHORT2LONG:
3232
                if (h->long_ref[mmco[i].long_arg] != pic)
3233
                    remove_long(h, mmco[i].long_arg, 0);
3234

    
3235
                remove_short_at_index(h, j);
3236
                h->long_ref[ mmco[i].long_arg ]= pic;
3237
                if (h->long_ref[ mmco[i].long_arg ]){
3238
                    h->long_ref[ mmco[i].long_arg ]->long_ref=1;
3239
                    h->long_ref_count++;
3240
                }
3241
            break;
3242
        case MMCO_LONG2UNUSED:
3243
            j = pic_num_extract(h, mmco[i].long_arg, &structure);
3244
            pic = h->long_ref[j];
3245
            if (pic) {
3246
                remove_long(h, j, structure ^ PICT_FRAME);
3247
            } else if(s->avctx->debug&FF_DEBUG_MMCO)
3248
                av_log(h->s.avctx, AV_LOG_DEBUG, "mmco: unref long failure\n");
3249
            break;
3250
        case MMCO_LONG:
3251
                    // Comment below left from previous code as it is an interresting note.
3252
                    /* First field in pair is in short term list or
3253
                     * at a different long term index.
3254
                     * This is not allowed; see 7.4.3.3, notes 2 and 3.
3255
                     * Report the problem and keep the pair where it is,
3256
                     * and mark this field valid.
3257
                     */
3258

    
3259
            if (h->long_ref[mmco[i].long_arg] != s->current_picture_ptr) {
3260
                remove_long(h, mmco[i].long_arg, 0);
3261

    
3262
                h->long_ref[ mmco[i].long_arg ]= s->current_picture_ptr;
3263
                h->long_ref[ mmco[i].long_arg ]->long_ref=1;
3264
                h->long_ref_count++;
3265
            }
3266

    
3267
            s->current_picture_ptr->reference |= s->picture_structure;
3268
            current_ref_assigned=1;
3269
            break;
3270
        case MMCO_SET_MAX_LONG:
3271
            assert(mmco[i].long_arg <= 16);
3272
            // just remove the long term which index is greater than new max
3273
            for(j = mmco[i].long_arg; j<16; j++){
3274
                remove_long(h, j, 0);
3275
            }
3276
            break;
3277
        case MMCO_RESET:
3278
            while(h->short_ref_count){
3279
                remove_short(h, h->short_ref[0]->frame_num, 0);
3280
            }
3281
            for(j = 0; j < 16; j++) {
3282
                remove_long(h, j, 0);
3283
            }
3284
            s->current_picture_ptr->poc=
3285
            s->current_picture_ptr->field_poc[0]=
3286
            s->current_picture_ptr->field_poc[1]=
3287
            h->poc_lsb=
3288
            h->poc_msb=
3289
            h->frame_num=
3290
            s->current_picture_ptr->frame_num= 0;
3291
            break;
3292
        default: assert(0);
3293
        }
3294
    }
3295

    
3296
    if (!current_ref_assigned) {
3297
        /* Second field of complementary field pair; the first field of
3298
         * which is already referenced. If short referenced, it
3299
         * should be first entry in short_ref. If not, it must exist
3300
         * in long_ref; trying to put it on the short list here is an
3301
         * error in the encoded bit stream (ref: 7.4.3.3, NOTE 2 and 3).
3302
         */
3303
        if (h->short_ref_count && h->short_ref[0] == s->current_picture_ptr) {
3304
            /* Just mark the second field valid */
3305
            s->current_picture_ptr->reference = PICT_FRAME;
3306
        } else if (s->current_picture_ptr->long_ref) {
3307
            av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term reference "
3308
                                             "assignment for second field "
3309
                                             "in complementary field pair "
3310
                                             "(first field is long term)\n");
3311
        } else {
3312
            pic= remove_short(h, s->current_picture_ptr->frame_num, 0);
3313
            if(pic){
3314
                av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term buffer state detected\n");
3315
            }
3316

    
3317
            if(h->short_ref_count)
3318
                memmove(&h->short_ref[1], &h->short_ref[0], h->short_ref_count*sizeof(Picture*));
3319

    
3320
            h->short_ref[0]= s->current_picture_ptr;
3321
            h->short_ref_count++;
3322
            s->current_picture_ptr->reference |= s->picture_structure;
3323
        }
3324
    }
3325

    
3326
    if (h->long_ref_count + h->short_ref_count > h->sps.ref_frame_count){
3327

    
3328
        /* We have too many reference frames, probably due to corrupted
3329
         * stream. Need to discard one frame. Prevents overrun of the
3330
         * short_ref and long_ref buffers.
3331
         */
3332
        av_log(h->s.avctx, AV_LOG_ERROR,
3333
               "number of reference frames exceeds max (probably "
3334
               "corrupt input), discarding one\n");
3335

    
3336
        if (h->long_ref_count && !h->short_ref_count) {
3337
            for (i = 0; i < 16; ++i)
3338
                if (h->long_ref[i])
3339
                    break;
3340

    
3341
            assert(i < 16);
3342
            remove_long(h, i, 0);
3343
        } else {
3344
            pic = h->short_ref[h->short_ref_count - 1];
3345
            remove_short(h, pic->frame_num, 0);
3346
        }
3347
    }
3348

    
3349
    print_short_term(h);
3350
    print_long_term(h);
3351
    return 0;
3352
}
3353

    
3354
static int decode_ref_pic_marking(H264Context *h, GetBitContext *gb){
3355
    MpegEncContext * const s = &h->s;
3356
    int i;
3357

    
3358
    h->mmco_index= 0;
3359
    if(h->nal_unit_type == NAL_IDR_SLICE){ //FIXME fields
3360
        s->broken_link= get_bits1(gb) -1;
3361
        if(get_bits1(gb)){
3362
            h->mmco[0].opcode= MMCO_LONG;
3363
            h->mmco[0].long_arg= 0;
3364
            h->mmco_index= 1;
3365
        }
3366
    }else{
3367
        if(get_bits1(gb)){ // adaptive_ref_pic_marking_mode_flag
3368
            for(i= 0; i<MAX_MMCO_COUNT; i++) {
3369
                MMCOOpcode opcode= get_ue_golomb(gb);
3370

    
3371
                h->mmco[i].opcode= opcode;
3372
                if(opcode==MMCO_SHORT2UNUSED || opcode==MMCO_SHORT2LONG){
3373
                    h->mmco[i].short_pic_num= (h->curr_pic_num - get_ue_golomb(gb) - 1) & (h->max_pic_num - 1);
3374
/*                    if(h->mmco[i].short_pic_num >= h->short_ref_count || h->short_ref[ h->mmco[i].short_pic_num ] == NULL){
3375
                        av_log(s->avctx, AV_LOG_ERROR, "illegal short ref in memory management control operation %d\n", mmco);
3376
                        return -1;
3377
                    }*/
3378
                }
3379
                if(opcode==MMCO_SHORT2LONG || opcode==MMCO_LONG2UNUSED || opcode==MMCO_LONG || opcode==MMCO_SET_MAX_LONG){
3380
                    unsigned int long_arg= get_ue_golomb(gb);
3381
                    if(long_arg >= 32 || (long_arg >= 16 && !(opcode == MMCO_LONG2UNUSED && FIELD_PICTURE))){
3382
                        av_log(h->s.avctx, AV_LOG_ERROR, "illegal long ref in memory management control operation %d\n", opcode);
3383
                        return -1;
3384
                    }
3385
                    h->mmco[i].long_arg= long_arg;
3386
                }
3387

    
3388
                if(opcode > (unsigned)MMCO_LONG){
3389
                    av_log(h->s.avctx, AV_LOG_ERROR, "illegal memory management control operation %d\n", opcode);
3390
                    return -1;
3391
                }
3392
                if(opcode == MMCO_END)
3393
                    break;
3394
            }
3395
            h->mmco_index= i;
3396
        }else{
3397
            assert(h->long_ref_count + h->short_ref_count <= h->sps.ref_frame_count);
3398

    
3399
            if(h->short_ref_count && h->long_ref_count + h->short_ref_count == h->sps.ref_frame_count &&
3400
                    !(FIELD_PICTURE && !s->first_field && s->current_picture_ptr->reference)) {
3401
                h->mmco[0].opcode= MMCO_SHORT2UNUSED;
3402
                h->mmco[0].short_pic_num= h->short_ref[ h->short_ref_count - 1 ]->frame_num;
3403
                h->mmco_index= 1;
3404
                if (FIELD_PICTURE) {
3405
                    h->mmco[0].short_pic_num *= 2;
3406
                    h->mmco[1].opcode= MMCO_SHORT2UNUSED;
3407
                    h->mmco[1].short_pic_num= h->mmco[0].short_pic_num + 1;
3408
                    h->mmco_index= 2;
3409
                }
3410
            }
3411
        }
3412
    }
3413

    
3414
    return 0;
3415
}
3416

    
3417
static int init_poc(H264Context *h){
3418
    MpegEncContext * const s = &h->s;
3419
    const int max_frame_num= 1<<h->sps.log2_max_frame_num;
3420
    int field_poc[2];
3421
    Picture *cur = s->current_picture_ptr;
3422

    
3423
    h->frame_num_offset= h->prev_frame_num_offset;
3424
    if(h->frame_num < h->prev_frame_num)
3425
        h->frame_num_offset += max_frame_num;
3426

    
3427
    if(h->sps.poc_type==0){
3428
        const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
3429

    
3430
        if     (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
3431
            h->poc_msb = h->prev_poc_msb + max_poc_lsb;
3432
        else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
3433
            h->poc_msb = h->prev_poc_msb - max_poc_lsb;
3434
        else
3435
            h->poc_msb = h->prev_poc_msb;
3436
//printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
3437
        field_poc[0] =
3438
        field_poc[1] = h->poc_msb + h->poc_lsb;
3439
        if(s->picture_structure == PICT_FRAME)
3440
            field_poc[1] += h->delta_poc_bottom;
3441
    }else if(h->sps.poc_type==1){
3442
        int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
3443
        int i;
3444

    
3445
        if(h->sps.poc_cycle_length != 0)
3446
            abs_frame_num = h->frame_num_offset + h->frame_num;
3447
        else
3448
            abs_frame_num = 0;
3449

    
3450
        if(h->nal_ref_idc==0 && abs_frame_num > 0)
3451
            abs_frame_num--;
3452

    
3453
        expected_delta_per_poc_cycle = 0;
3454
        for(i=0; i < h->sps.poc_cycle_length; i++)
3455
            expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
3456

    
3457
        if(abs_frame_num > 0){
3458
            int poc_cycle_cnt          = (abs_frame_num - 1) / h->sps.poc_cycle_length;
3459
            int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
3460

    
3461
            expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
3462
            for(i = 0; i <= frame_num_in_poc_cycle; i++)
3463
                expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
3464
        } else
3465
            expectedpoc = 0;
3466

    
3467
        if(h->nal_ref_idc == 0)
3468
            expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
3469

    
3470
        field_poc[0] = expectedpoc + h->delta_poc[0];
3471
        field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
3472

    
3473
        if(s->picture_structure == PICT_FRAME)
3474
            field_poc[1] += h->delta_poc[1];
3475
    }else{
3476
        int poc= 2*(h->frame_num_offset + h->frame_num);
3477

    
3478
        if(!h->nal_ref_idc)
3479
            poc--;
3480

    
3481
        field_poc[0]= poc;
3482
        field_poc[1]= poc;
3483
    }
3484

    
3485
    if(s->picture_structure != PICT_BOTTOM_FIELD)
3486
        s->current_picture_ptr->field_poc[0]= field_poc[0];
3487
    if(s->picture_structure != PICT_TOP_FIELD)
3488
        s->current_picture_ptr->field_poc[1]= field_poc[1];
3489
    cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
3490

    
3491
    return 0;
3492
}
3493

    
3494

    
3495
/**
3496
 * initialize scan tables
3497
 */
3498
static void init_scan_tables(H264Context *h){
3499
    MpegEncContext * const s = &h->s;
3500
    int i;
3501
    if(s->dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
3502
        memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
3503
        memcpy(h-> field_scan,  field_scan, 16*sizeof(uint8_t));
3504
    }else{
3505
        for(i=0; i<16; i++){
3506
#define T(x) (x>>2) | ((x<<2) & 0xF)
3507
            h->zigzag_scan[i] = T(zigzag_scan[i]);
3508
            h-> field_scan[i] = T( field_scan[i]);
3509
#undef T
3510
        }
3511
    }
3512
    if(s->dsp.h264_idct8_add == ff_h264_idct8_add_c){
3513
        memcpy(h->zigzag_scan8x8,       zigzag_scan8x8,       64*sizeof(uint8_t));
3514
        memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
3515
        memcpy(h->field_scan8x8,        field_scan8x8,        64*sizeof(uint8_t));
3516
        memcpy(h->field_scan8x8_cavlc,  field_scan8x8_cavlc,  64*sizeof(uint8_t));
3517
    }else{
3518
        for(i=0; i<64; i++){
3519
#define T(x) (x>>3) | ((x&7)<<3)
3520
            h->zigzag_scan8x8[i]       = T(zigzag_scan8x8[i]);
3521
            h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
3522
            h->field_scan8x8[i]        = T(field_scan8x8[i]);
3523
            h->field_scan8x8_cavlc[i]  = T(field_scan8x8_cavlc[i]);
3524
#undef T
3525
        }
3526
    }
3527
    if(h->sps.transform_bypass){ //FIXME same ugly
3528
        h->zigzag_scan_q0          = zigzag_scan;
3529
        h->zigzag_scan8x8_q0       = zigzag_scan8x8;
3530
        h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
3531
        h->field_scan_q0           = field_scan;
3532
        h->field_scan8x8_q0        = field_scan8x8;
3533
        h->field_scan8x8_cavlc_q0  = field_scan8x8_cavlc;
3534
    }else{
3535
        h->zigzag_scan_q0          = h->zigzag_scan;
3536
        h->zigzag_scan8x8_q0       = h->zigzag_scan8x8;
3537
        h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
3538
        h->field_scan_q0           = h->field_scan;
3539
        h->field_scan8x8_q0        = h->field_scan8x8;
3540
        h->field_scan8x8_cavlc_q0  = h->field_scan8x8_cavlc;
3541
    }
3542
}
3543

    
3544
/**
3545
 * Replicates H264 "master" context to thread contexts.
3546
 */
3547
static void clone_slice(H264Context *dst, H264Context *src)
3548
{
3549
    memcpy(dst->block_offset,     src->block_offset, sizeof(dst->block_offset));
3550
    dst->s.current_picture_ptr  = src->s.current_picture_ptr;
3551
    dst->s.current_picture      = src->s.current_picture;
3552
    dst->s.linesize             = src->s.linesize;
3553
    dst->s.uvlinesize           = src->s.uvlinesize;
3554
    dst->s.first_field          = src->s.first_field;
3555

    
3556
    dst->prev_poc_msb           = src->prev_poc_msb;
3557
    dst->prev_poc_lsb           = src->prev_poc_lsb;
3558
    dst->prev_frame_num_offset  = src->prev_frame_num_offset;
3559
    dst->prev_frame_num         = src->prev_frame_num;
3560
    dst->short_ref_count        = src->short_ref_count;
3561

    
3562
    memcpy(dst->short_ref,        src->short_ref,        sizeof(dst->short_ref));
3563
    memcpy(dst->long_ref,         src->long_ref,         sizeof(dst->long_ref));
3564
    memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
3565
    memcpy(dst->ref_list,         src->ref_list,         sizeof(dst->ref_list));
3566

    
3567
    memcpy(dst->dequant4_coeff,   src->dequant4_coeff,   sizeof(src->dequant4_coeff));
3568
    memcpy(dst->dequant8_coeff,   src->dequant8_coeff,   sizeof(src->dequant8_coeff));
3569
}
3570

    
3571
/**
3572
 * decodes a slice header.
3573
 * This will also call MPV_common_init() and frame_start() as needed.
3574
 *
3575
 * @param h h264context
3576
 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
3577
 *
3578
 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
3579
 */
3580
static int decode_slice_header(H264Context *h, H264Context *h0){
3581
    MpegEncContext * const s = &h->s;
3582
    MpegEncContext * const s0 = &h0->s;
3583
    unsigned int first_mb_in_slice;
3584
    unsigned int pps_id;
3585
    int num_ref_idx_active_override_flag;
3586
    unsigned int slice_type, tmp, i, j;
3587
    int default_ref_list_done = 0;
3588
    int last_pic_structure;
3589

    
3590
    s->dropable= h->nal_ref_idc == 0;
3591

    
3592
    if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
3593
        s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
3594
        s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
3595
    }else{
3596
        s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
3597
        s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
3598
    }
3599

    
3600
    first_mb_in_slice= get_ue_golomb(&s->gb);
3601

    
3602
    if((s->flags2 & CODEC_FLAG2_CHUNKS) && first_mb_in_slice == 0){
3603
        h0->current_slice = 0;
3604
        if (!s0->first_field)
3605
            s->current_picture_ptr= NULL;
3606
    }
3607

    
3608
    slice_type= get_ue_golomb(&s->gb);
3609
    if(slice_type > 9){
3610
        av_log(h->s.avctx, AV_LOG_ERROR, "slice type too large (%d) at %d %d\n", h->slice_type, s->mb_x, s->mb_y);
3611
        return -1;
3612
    }
3613
    if(slice_type > 4){
3614
        slice_type -= 5;
3615
        h->slice_type_fixed=1;
3616
    }else
3617
        h->slice_type_fixed=0;
3618

    
3619
    slice_type= golomb_to_pict_type[ slice_type ];
3620
    if (slice_type == FF_I_TYPE
3621
        || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
3622
        default_ref_list_done = 1;
3623
    }
3624
    h->slice_type= slice_type;
3625
    h->slice_type_nos= slice_type & 3;
3626

    
3627
    s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
3628
    if (s->pict_type == FF_B_TYPE && s0->last_picture_ptr == NULL) {
3629
        av_log(h->s.avctx, AV_LOG_ERROR,
3630
               "B picture before any references, skipping\n");
3631
        return -1;
3632
    }
3633

    
3634
    pps_id= get_ue_golomb(&s->gb);
3635
    if(pps_id>=MAX_PPS_COUNT){
3636
        av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
3637
        return -1;
3638
    }
3639
    if(!h0->pps_buffers[pps_id]) {
3640
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS referenced\n");
3641
        return -1;
3642
    }
3643
    h->pps= *h0->pps_buffers[pps_id];
3644

    
3645
    if(!h0->sps_buffers[h->pps.sps_id]) {
3646
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS referenced\n");
3647
        return -1;
3648
    }
3649
    h->sps = *h0->sps_buffers[h->pps.sps_id];
3650

    
3651
    if(h == h0 && h->dequant_coeff_pps != pps_id){
3652
        h->dequant_coeff_pps = pps_id;
3653
        init_dequant_tables(h);
3654
    }
3655

    
3656
    s->mb_width= h->sps.mb_width;
3657
    s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
3658

    
3659
    h->b_stride=  s->mb_width*4;
3660
    h->b8_stride= s->mb_width*2;
3661

    
3662
    s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
3663
    if(h->sps.frame_mbs_only_flag)
3664
        s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
3665
    else
3666
        s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
3667

    
3668
    if (s->context_initialized
3669
        && (   s->width != s->avctx->width || s->height != s->avctx->height)) {
3670
        if(h != h0)
3671
            return -1;   // width / height changed during parallelized decoding
3672
        free_tables(h);
3673
        flush_dpb(s->avctx);
3674
        MPV_common_end(s);
3675
    }
3676
    if (!s->context_initialized) {
3677
        if(h != h0)
3678
            return -1;  // we cant (re-)initialize context during parallel decoding
3679
        if (MPV_common_init(s) < 0)
3680
            return -1;
3681
        s->first_field = 0;
3682

    
3683
        init_scan_tables(h);
3684
        alloc_tables(h);
3685

    
3686
        for(i = 1; i < s->avctx->thread_count; i++) {
3687
            H264Context *c;
3688
            c = h->thread_context[i] = av_malloc(sizeof(H264Context));
3689
            memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
3690
            memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
3691
            c->sps = h->sps;
3692
            c->pps = h->pps;
3693
            init_scan_tables(c);
3694
            clone_tables(c, h);
3695
        }
3696

    
3697
        for(i = 0; i < s->avctx->thread_count; i++)
3698
            if(context_init(h->thread_context[i]) < 0)
3699
                return -1;
3700

    
3701
        s->avctx->width = s->width;
3702
        s->avctx->height = s->height;
3703
        s->avctx->sample_aspect_ratio= h->sps.sar;
3704
        if(!s->avctx->sample_aspect_ratio.den)
3705
            s->avctx->sample_aspect_ratio.den = 1;
3706

    
3707
        if(h->sps.timing_info_present_flag){
3708
            s->avctx->time_base= (AVRational){h->sps.num_units_in_tick * 2, h->sps.time_scale};
3709
            if(h->x264_build > 0 && h->x264_build < 44)
3710
                s->avctx->time_base.den *= 2;
3711
            av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
3712
                      s->avctx->time_base.num, s->avctx->time_base.den, 1<<30);
3713
        }
3714
    }
3715

    
3716
    h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
3717

    
3718
    h->mb_mbaff = 0;
3719
    h->mb_aff_frame = 0;
3720
    last_pic_structure = s0->picture_structure;
3721
    if(h->sps.frame_mbs_only_flag){
3722
        s->picture_structure= PICT_FRAME;
3723
    }else{
3724
        if(get_bits1(&s->gb)) { //field_pic_flag
3725
            s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
3726
        } else {
3727
            s->picture_structure= PICT_FRAME;
3728
            h->mb_aff_frame = h->sps.mb_aff;
3729
        }
3730
    }
3731
    h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
3732

    
3733
    if(h0->current_slice == 0){
3734
        while(h->frame_num !=  h->prev_frame_num &&
3735
              h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
3736
            av_log(NULL, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
3737
            frame_start(h);
3738
            h->prev_frame_num++;
3739
            h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
3740
            s->current_picture_ptr->frame_num= h->prev_frame_num;
3741
            execute_ref_pic_marking(h, NULL, 0);
3742
        }
3743

    
3744
        /* See if we have a decoded first field looking for a pair... */
3745
        if (s0->first_field) {
3746
            assert(s0->current_picture_ptr);
3747
            assert(s0->current_picture_ptr->data[0]);
3748
            assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
3749

    
3750
            /* figure out if we have a complementary field pair */
3751
            if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
3752
                /*
3753
                 * Previous field is unmatched. Don't display it, but let it
3754
                 * remain for reference if marked as such.
3755
                 */
3756
                s0->current_picture_ptr = NULL;
3757
                s0->first_field = FIELD_PICTURE;
3758

    
3759
            } else {
3760
                if (h->nal_ref_idc &&
3761
                        s0->current_picture_ptr->reference &&
3762
                        s0->current_picture_ptr->frame_num != h->frame_num) {
3763
                    /*
3764
                     * This and previous field were reference, but had
3765
                     * different frame_nums. Consider this field first in
3766
                     * pair. Throw away previous field except for reference
3767
                     * purposes.
3768
                     */
3769
                    s0->first_field = 1;
3770
                    s0->current_picture_ptr = NULL;
3771

    
3772
                } else {
3773
                    /* Second field in complementary pair */
3774
                    s0->first_field = 0;
3775
                }
3776
            }
3777

    
3778
        } else {
3779
            /* Frame or first field in a potentially complementary pair */
3780
            assert(!s0->current_picture_ptr);
3781
            s0->first_field = FIELD_PICTURE;
3782
        }
3783

    
3784
        if((!FIELD_PICTURE || s0->first_field) && frame_start(h) < 0) {
3785
            s0->first_field = 0;
3786
            return -1;
3787
        }
3788
    }
3789
    if(h != h0)
3790
        clone_slice(h, h0);
3791

    
3792
    s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
3793

    
3794
    assert(s->mb_num == s->mb_width * s->mb_height);
3795
    if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
3796
       first_mb_in_slice                    >= s->mb_num){
3797
        av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
3798
        return -1;
3799
    }
3800
    s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
3801
    s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
3802
    if (s->picture_structure == PICT_BOTTOM_FIELD)
3803
        s->resync_mb_y = s->mb_y = s->mb_y + 1;
3804
    assert(s->mb_y < s->mb_height);
3805

    
3806
    if(s->picture_structure==PICT_FRAME){
3807
        h->curr_pic_num=   h->frame_num;
3808
        h->max_pic_num= 1<< h->sps.log2_max_frame_num;
3809
    }else{
3810
        h->curr_pic_num= 2*h->frame_num + 1;
3811
        h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
3812
    }
3813

    
3814
    if(h->nal_unit_type == NAL_IDR_SLICE){
3815
        get_ue_golomb(&s->gb); /* idr_pic_id */
3816
    }
3817

    
3818
    if(h->sps.poc_type==0){
3819
        h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
3820

    
3821
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
3822
            h->delta_poc_bottom= get_se_golomb(&s->gb);
3823
        }
3824
    }
3825

    
3826
    if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
3827
        h->delta_poc[0]= get_se_golomb(&s->gb);
3828

    
3829
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
3830
            h->delta_poc[1]= get_se_golomb(&s->gb);
3831
    }
3832

    
3833
    init_poc(h);
3834

    
3835
    if(h->pps.redundant_pic_cnt_present){
3836
        h->redundant_pic_count= get_ue_golomb(&s->gb);
3837
    }
3838

    
3839
    //set defaults, might be overridden a few lines later
3840
    h->ref_count[0]= h->pps.ref_count[0];
3841
    h->ref_count[1]= h->pps.ref_count[1];
3842

    
3843
    if(h->slice_type_nos != FF_I_TYPE){
3844
        if(h->slice_type_nos == FF_B_TYPE){
3845
            h->direct_spatial_mv_pred= get_bits1(&s->gb);
3846
        }
3847
        num_ref_idx_active_override_flag= get_bits1(&s->gb);
3848

    
3849
        if(num_ref_idx_active_override_flag){
3850
            h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
3851
            if(h->slice_type_nos==FF_B_TYPE)
3852
                h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
3853

    
3854
            if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
3855
                av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
3856
                h->ref_count[0]= h->ref_count[1]= 1;
3857
                return -1;
3858
            }
3859
        }
3860
        if(h->slice_type_nos == FF_B_TYPE)
3861
            h->list_count= 2;
3862
        else
3863
            h->list_count= 1;
3864
    }else
3865
        h->list_count= 0;
3866

    
3867
    if(!default_ref_list_done){
3868
        fill_default_ref_list(h);
3869
    }
3870

    
3871
    if(h->slice_type_nos!=FF_I_TYPE && decode_ref_pic_list_reordering(h) < 0)
3872
        return -1;
3873

    
3874
    if(h->slice_type_nos!=FF_I_TYPE){
3875
        s->last_picture_ptr= &h->ref_list[0][0];
3876
        ff_copy_picture(&s->last_picture, s->last_picture_ptr);
3877
    }
3878
    if(h->slice_type_nos==FF_B_TYPE){
3879
        s->next_picture_ptr= &h->ref_list[1][0];
3880
        ff_copy_picture(&s->next_picture, s->next_picture_ptr);
3881
    }
3882

    
3883
    if(   (h->pps.weighted_pred          && h->slice_type_nos == FF_P_TYPE )
3884
       ||  (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
3885
        pred_weight_table(h);
3886
    else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE)
3887
        implicit_weight_table(h);
3888
    else
3889
        h->use_weight = 0;
3890

    
3891
    if(h->nal_ref_idc)
3892
        decode_ref_pic_marking(h0, &s->gb);
3893

    
3894
    if(FRAME_MBAFF)
3895
        fill_mbaff_ref_list(h);
3896

    
3897
    if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
3898
        direct_dist_scale_factor(h);
3899
    direct_ref_list_init(h);
3900

    
3901
    if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
3902
        tmp = get_ue_golomb(&s->gb);
3903
        if(tmp > 2){
3904
            av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
3905
            return -1;
3906
        }
3907
        h->cabac_init_idc= tmp;
3908
    }
3909

    
3910
    h->last_qscale_diff = 0;
3911
    tmp = h->pps.init_qp + get_se_golomb(&s->gb);
3912
    if(tmp>51){
3913
        av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
3914
        return -1;
3915
    }
3916
    s->qscale= tmp;
3917
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
3918
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
3919
    //FIXME qscale / qp ... stuff
3920
    if(h->slice_type == FF_SP_TYPE){
3921
        get_bits1(&s->gb); /* sp_for_switch_flag */
3922
    }
3923
    if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
3924
        get_se_golomb(&s->gb); /* slice_qs_delta */
3925
    }
3926

    
3927
    h->deblocking_filter = 1;
3928
    h->slice_alpha_c0_offset = 0;
3929
    h->slice_beta_offset = 0;
3930
    if( h->pps.deblocking_filter_parameters_present ) {
3931
        tmp= get_ue_golomb(&s->gb);
3932
        if(tmp > 2){
3933
            av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
3934
            return -1;
3935
        }
3936
        h->deblocking_filter= tmp;
3937
        if(h->deblocking_filter < 2)
3938
            h->deblocking_filter^= 1; // 1<->0
3939

    
3940
        if( h->deblocking_filter ) {
3941
            h->slice_alpha_c0_offset = get_se_golomb(&s->gb) << 1;
3942
            h->slice_beta_offset = get_se_golomb(&s->gb) << 1;
3943
        }
3944
    }
3945

    
3946
    if(   s->avctx->skip_loop_filter >= AVDISCARD_ALL
3947
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
3948
       ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR  && h->slice_type_nos == FF_B_TYPE)
3949
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
3950
        h->deblocking_filter= 0;
3951

    
3952
    if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
3953
        if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
3954
            /* Cheat slightly for speed:
3955
               Do not bother to deblock across slices. */
3956
            h->deblocking_filter = 2;
3957
        } else {
3958
            h0->max_contexts = 1;
3959
            if(!h0->single_decode_warning) {
3960
                av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
3961
                h0->single_decode_warning = 1;
3962
            }
3963
            if(h != h0)
3964
                return 1; // deblocking switched inside frame
3965
        }
3966
    }
3967

    
3968
#if 0 //FMO
3969
    if( h->pps.num_slice_groups > 1  && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
3970
        slice_group_change_cycle= get_bits(&s->gb, ?);
3971
#endif
3972

    
3973
    h0->last_slice_type = slice_type;
3974
    h->slice_num = ++h0->current_slice;
3975
    if(h->slice_num >= MAX_SLICES){
3976
        av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
3977
    }
3978

    
3979
    for(j=0; j<2; j++){
3980
        int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
3981
        ref2frm[0]=
3982
        ref2frm[1]= -1;
3983
        for(i=0; i<16; i++)
3984
            ref2frm[i+2]= 4*h->ref_list[j][i].frame_num
3985
                          +(h->ref_list[j][i].reference&3);
3986
        ref2frm[18+0]=
3987
        ref2frm[18+1]= -1;
3988
        for(i=16; i<48; i++)
3989
            ref2frm[i+4]= 4*h->ref_list[j][i].frame_num
3990
                          +(h->ref_list[j][i].reference&3);
3991
    }
3992

    
3993
    h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
3994
    h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
3995

    
3996
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
3997
        av_log(h->s.avctx, AV_LOG_DEBUG, "slice:%d %s mb:%d %c%s%s pps:%u frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d:%d:%d weight:%d%s %s\n",
3998
               h->slice_num,
3999
               (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
4000
               first_mb_in_slice,
4001
               av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
4002
               pps_id, h->frame_num,
4003
               s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
4004
               h->ref_count[0], h->ref_count[1],
4005
               s->qscale,
4006
               h->deblocking_filter, h->slice_alpha_c0_offset/2, h->slice_beta_offset/2,
4007
               h->use_weight,
4008
               h->use_weight==1 && h->use_weight_chroma ? "c" : "",
4009
               h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
4010
               );
4011
    }
4012

    
4013
    return 0;
4014
}
4015

    
4016
/**
4017
 *
4018
 */
4019
static inline int get_level_prefix(GetBitContext *gb){
4020
    unsigned int buf;
4021
    int log;
4022

    
4023
    OPEN_READER(re, gb);
4024
    UPDATE_CACHE(re, gb);
4025
    buf=GET_CACHE(re, gb);
4026

    
4027
    log= 32 - av_log2(buf);
4028
#ifdef TRACE
4029
    print_bin(buf>>(32-log), log);
4030
    av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d lpr @%5d in %s get_level_prefix\n", buf>>(32-log), log, log-1, get_bits_count(gb), __FILE__);
4031
#endif
4032

    
4033
    LAST_SKIP_BITS(re, gb, log);
4034
    CLOSE_READER(re, gb);
4035

    
4036
    return log-1;
4037
}
4038

    
4039
static inline int get_dct8x8_allowed(H264Context *h){
4040
    int i;
4041
    for(i=0; i<4; i++){
4042
        if(!IS_SUB_8X8(h->sub_mb_type[i])
4043
           || (!h->sps.direct_8x8_inference_flag && IS_DIRECT(h->sub_mb_type[i])))
4044
            return 0;
4045
    }
4046
    return 1;
4047
}
4048

    
4049
/**
4050
 * decodes a residual block.
4051
 * @param n block index
4052
 * @param scantable scantable
4053
 * @param max_coeff number of coefficients in the block
4054
 * @return <0 if an error occurred
4055
 */
4056
static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff){
4057
    MpegEncContext * const s = &h->s;
4058
    static const int coeff_token_table_index[17]= {0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3};
4059
    int level[16];
4060
    int zeros_left, coeff_num, coeff_token, total_coeff, i, j, trailing_ones, run_before;
4061

    
4062
    //FIXME put trailing_onex into the context
4063

    
4064
    if(n == CHROMA_DC_BLOCK_INDEX){
4065
        coeff_token= get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1);
4066
        total_coeff= coeff_token>>2;
4067
    }else{
4068
        if(n == LUMA_DC_BLOCK_INDEX){
4069
            total_coeff= pred_non_zero_count(h, 0);
4070
            coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
4071
            total_coeff= coeff_token>>2;
4072
        }else{
4073
            total_coeff= pred_non_zero_count(h, n);
4074
            coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
4075
            total_coeff= coeff_token>>2;
4076
            h->non_zero_count_cache[ scan8[n] ]= total_coeff;
4077
        }
4078
    }
4079

    
4080
    //FIXME set last_non_zero?
4081

    
4082
    if(total_coeff==0)
4083
        return 0;
4084
    if(total_coeff > (unsigned)max_coeff) {
4085
        av_log(h->s.avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", s->mb_x, s->mb_y, total_coeff);
4086
        return -1;
4087
    }
4088

    
4089
    trailing_ones= coeff_token&3;
4090
    tprintf(h->s.avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff);
4091
    assert(total_coeff<=16);
4092

    
4093
    i = show_bits(gb, 3);
4094
    skip_bits(gb, trailing_ones);
4095
    level[0] = 1-((i&4)>>1);
4096
    level[1] = 1-((i&2)   );
4097
    level[2] = 1-((i&1)<<1);
4098

    
4099
    if(trailing_ones<total_coeff) {
4100
        int level_code, mask;
4101
        int suffix_length = total_coeff > 10 && trailing_ones < 3;
4102
        int prefix= get_level_prefix(gb);
4103

    
4104
        //first coefficient has suffix_length equal to 0 or 1
4105
        if(prefix<14){ //FIXME try to build a large unified VLC table for all this
4106
            if(suffix_length)
4107
                level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
4108
            else
4109
                level_code= (prefix<<suffix_length); //part
4110
        }else if(prefix==14){
4111
            if(suffix_length)
4112
                level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
4113
            else
4114
                level_code= prefix + get_bits(gb, 4); //part
4115
        }else{
4116
            level_code= (15<<suffix_length) + get_bits(gb, prefix-3); //part
4117
            if(suffix_length==0) level_code+=15; //FIXME doesn't make (much)sense
4118
            if(prefix>=16)
4119
                level_code += (1<<(prefix-3))-4096;
4120
        }
4121

    
4122
        if(trailing_ones < 3) level_code += 2;
4123

    
4124
        suffix_length = 1;
4125
        if(level_code > 5)
4126
            suffix_length++;
4127
        mask= -(level_code&1);
4128
        level[trailing_ones]= (((2+level_code)>>1) ^ mask) - mask;
4129

    
4130
        //remaining coefficients have suffix_length > 0
4131
        for(i=trailing_ones+1;i<total_coeff;i++) {
4132
            static const int suffix_limit[7] = {0,5,11,23,47,95,INT_MAX };
4133
            prefix = get_level_prefix(gb);
4134
            if(prefix<15){
4135
                level_code = (prefix<<suffix_length) + get_bits(gb, suffix_length);
4136
            }else{
4137
                level_code = (15<<suffix_length) + get_bits(gb, prefix-3);
4138
                if(prefix>=16)
4139
                    level_code += (1<<(prefix-3))-4096;
4140
            }
4141
            mask= -(level_code&1);
4142
            level[i]= (((2+level_code)>>1) ^ mask) - mask;
4143
            if(level_code > suffix_limit[suffix_length])
4144
                suffix_length++;
4145
        }
4146
    }
4147

    
4148
    if(total_coeff == max_coeff)
4149
        zeros_left=0;
4150
    else{
4151
        if(n == CHROMA_DC_BLOCK_INDEX)
4152
            zeros_left= get_vlc2(gb, chroma_dc_total_zeros_vlc[ total_coeff-1 ].table, CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1);
4153
        else
4154
            zeros_left= get_vlc2(gb, total_zeros_vlc[ total_coeff-1 ].table, TOTAL_ZEROS_VLC_BITS, 1);
4155
    }
4156

    
4157
    coeff_num = zeros_left + total_coeff - 1;
4158
    j = scantable[coeff_num];
4159
    if(n > 24){
4160
        block[j] = level[0];
4161
        for(i=1;i<total_coeff;i++) {
4162
            if(zeros_left <= 0)
4163
                run_before = 0;
4164
            else if(zeros_left < 7){
4165
                run_before= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
4166
            }else{
4167
                run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
4168
            }
4169
            zeros_left -= run_before;
4170
            coeff_num -= 1 + run_before;
4171
            j= scantable[ coeff_num ];
4172

    
4173
            block[j]= level[i];
4174
        }
4175
    }else{
4176
        block[j] = (level[0] * qmul[j] + 32)>>6;
4177
        for(i=1;i<total_coeff;i++) {
4178
            if(zeros_left <= 0)
4179
                run_before = 0;
4180
            else if(zeros_left < 7){
4181
                run_before= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
4182
            }else{
4183
                run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
4184
            }
4185
            zeros_left -= run_before;
4186
            coeff_num -= 1 + run_before;
4187
            j= scantable[ coeff_num ];
4188

    
4189
            block[j]= (level[i] * qmul[j] + 32)>>6;
4190
        }
4191
    }
4192

    
4193
    if(zeros_left<0){
4194
        av_log(h->s.avctx, AV_LOG_ERROR, "negative number of zero coeffs at %d %d\n", s->mb_x, s->mb_y);
4195
        return -1;
4196
    }
4197

    
4198
    return 0;
4199
}
4200

    
4201
static void predict_field_decoding_flag(H264Context *h){
4202
    MpegEncContext * const s = &h->s;
4203
    const int mb_xy= h->mb_xy;
4204
    int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
4205
                ? s->current_picture.mb_type[mb_xy-1]
4206
                : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
4207
                ? s->current_picture.mb_type[mb_xy-s->mb_stride]
4208
                : 0;
4209
    h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
4210
}
4211

    
4212
/**
4213
 * decodes a P_SKIP or B_SKIP macroblock
4214
 */
4215
static void decode_mb_skip(H264Context *h){
4216
    MpegEncContext * const s = &h->s;
4217
    const int mb_xy= h->mb_xy;
4218
    int mb_type=0;
4219

    
4220
    memset(h->non_zero_count[mb_xy], 0, 16);
4221
    memset(h->non_zero_count_cache + 8, 0, 8*5); //FIXME ugly, remove pfui
4222

    
4223
    if(MB_FIELD)
4224
        mb_type|= MB_TYPE_INTERLACED;
4225

    
4226
    if( h->slice_type_nos == FF_B_TYPE )
4227
    {
4228
        // just for fill_caches. pred_direct_motion will set the real mb_type
4229
        mb_type|= MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2|MB_TYPE_SKIP;
4230

    
4231
        fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ...
4232
        pred_direct_motion(h, &mb_type);
4233
        mb_type|= MB_TYPE_SKIP;
4234
    }
4235
    else
4236
    {
4237
        int mx, my;
4238
        mb_type|= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P1L0|MB_TYPE_SKIP;
4239

    
4240
        fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ...
4241
        pred_pskip_motion(h, &mx, &my);
4242
        fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);
4243
        fill_rectangle(  h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mx,my), 4);
4244
    }
4245

    
4246
    write_back_motion(h, mb_type);
4247
    s->current_picture.mb_type[mb_xy]= mb_type;
4248
    s->current_picture.qscale_table[mb_xy]= s->qscale;
4249
    h->slice_table[ mb_xy ]= h->slice_num;
4250
    h->prev_mb_skipped= 1;
4251
}
4252

    
4253
/**
4254
 * decodes a macroblock
4255
 * @returns 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
4256
 */
4257
static int decode_mb_cavlc(H264Context *h){
4258
    MpegEncContext * const s = &h->s;
4259
    int mb_xy;
4260
    int partition_count;
4261
    unsigned int mb_type, cbp;
4262
    int dct8x8_allowed= h->pps.transform_8x8_mode;
4263

    
4264
    mb_xy = h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;
4265

    
4266
    s->dsp.clear_blocks(h->mb); //FIXME avoid if already clear (move after skip handlong?
4267

    
4268
    tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
4269
    cbp = 0; /* avoid warning. FIXME: find a solution without slowing
4270
                down the code */
4271
    if(h->slice_type_nos != FF_I_TYPE){
4272
        if(s->mb_skip_run==-1)
4273
            s->mb_skip_run= get_ue_golomb(&s->gb);
4274

    
4275
        if (s->mb_skip_run--) {
4276
            if(FRAME_MBAFF && (s->mb_y&1) == 0){
4277
                if(s->mb_skip_run==0)
4278
                    h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb);
4279
                else
4280
                    predict_field_decoding_flag(h);
4281
            }
4282
            decode_mb_skip(h);
4283
            return 0;
4284
        }
4285
    }
4286
    if(FRAME_MBAFF){
4287
        if( (s->mb_y&1) == 0 )
4288
            h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb);
4289
    }
4290

    
4291
    h->prev_mb_skipped= 0;
4292

    
4293
    mb_type= get_ue_golomb(&s->gb);
4294
    if(h->slice_type_nos == FF_B_TYPE){
4295
        if(mb_type < 23){
4296
            partition_count= b_mb_type_info[mb_type].partition_count;
4297
            mb_type=         b_mb_type_info[mb_type].type;
4298
        }else{
4299
            mb_type -= 23;
4300
            goto decode_intra_mb;
4301
        }
4302
    }else if(h->slice_type_nos == FF_P_TYPE){
4303
        if(mb_type < 5){
4304
            partition_count= p_mb_type_info[mb_type].partition_count;
4305
            mb_type=         p_mb_type_info[mb_type].type;
4306
        }else{
4307
            mb_type -= 5;
4308
            goto decode_intra_mb;
4309
        }
4310
    }else{
4311
       assert(h->slice_type_nos == FF_I_TYPE);
4312
        if(h->slice_type == FF_SI_TYPE && mb_type)
4313
            mb_type--;
4314
decode_intra_mb:
4315
        if(mb_type > 25){
4316
            av_log(h->s.avctx, AV_LOG_ERROR, "mb_type %d in %c slice too large at %d %d\n", mb_type, av_get_pict_type_char(h->slice_type), s->mb_x, s->mb_y);
4317
            return -1;
4318
        }
4319
        partition_count=0;
4320
        cbp= i_mb_type_info[mb_type].cbp;
4321
        h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode;
4322
        mb_type= i_mb_type_info[mb_type].type;
4323
    }
4324

    
4325
    if(MB_FIELD)
4326
        mb_type |= MB_TYPE_INTERLACED;
4327

    
4328
    h->slice_table[ mb_xy ]= h->slice_num;
4329

    
4330
    if(IS_INTRA_PCM(mb_type)){
4331
        unsigned int x;
4332

    
4333
        // We assume these blocks are very rare so we do not optimize it.
4334
        align_get_bits(&s->gb);
4335

    
4336
        // The pixels are stored in the same order as levels in h->mb array.
4337
        for(x=0; x < (CHROMA ? 384 : 256); x++){
4338
            ((uint8_t*)h->mb)[x]= get_bits(&s->gb, 8);
4339
        }
4340

    
4341
        // In deblocking, the quantizer is 0
4342
        s->current_picture.qscale_table[mb_xy]= 0;
4343
        // All coeffs are present
4344
        memset(h->non_zero_count[mb_xy], 16, 16);
4345

    
4346
        s->current_picture.mb_type[mb_xy]= mb_type;
4347
        return 0;
4348
    }
4349

    
4350
    if(MB_MBAFF){
4351
        h->ref_count[0] <<= 1;
4352
        h->ref_count[1] <<= 1;
4353
    }
4354

    
4355
    fill_caches(h, mb_type, 0);
4356

    
4357
    //mb_pred
4358
    if(IS_INTRA(mb_type)){
4359
        int pred_mode;
4360
//            init_top_left_availability(h);
4361
        if(IS_INTRA4x4(mb_type)){
4362
            int i;
4363
            int di = 1;
4364
            if(dct8x8_allowed && get_bits1(&s->gb)){
4365
                mb_type |= MB_TYPE_8x8DCT;
4366
                di = 4;
4367
            }
4368

    
4369
//                fill_intra4x4_pred_table(h);
4370
            for(i=0; i<16; i+=di){
4371
                int mode= pred_intra_mode(h, i);
4372

    
4373
                if(!get_bits1(&s->gb)){
4374
                    const int rem_mode= get_bits(&s->gb, 3);
4375
                    mode = rem_mode + (rem_mode >= mode);
4376
                }
4377

    
4378
                if(di==4)
4379
                    fill_rectangle( &h->intra4x4_pred_mode_cache[ scan8[i] ], 2, 2, 8, mode, 1 );
4380
                else
4381
                    h->intra4x4_pred_mode_cache[ scan8[i] ] = mode;
4382
            }
4383
            write_back_intra_pred_mode(h);
4384
            if( check_intra4x4_pred_mode(h) < 0)
4385
                return -1;
4386
        }else{
4387
            h->intra16x16_pred_mode= check_intra_pred_mode(h, h->intra16x16_pred_mode);
4388
            if(h->intra16x16_pred_mode < 0)
4389
                return -1;
4390
        }
4391
        if(CHROMA){
4392
            pred_mode= check_intra_pred_mode(h, get_ue_golomb(&s->gb));
4393
            if(pred_mode < 0)
4394
                return -1;
4395
            h->chroma_pred_mode= pred_mode;
4396
        }
4397
    }else if(partition_count==4){
4398
        int i, j, sub_partition_count[4], list, ref[2][4];
4399

    
4400
        if(h->slice_type_nos == FF_B_TYPE){
4401
            for(i=0; i<4; i++){
4402
                h->sub_mb_type[i]= get_ue_golomb(&s->gb);
4403
                if(h->sub_mb_type[i] >=13){
4404
                    av_log(h->s.avctx, AV_LOG_ERROR, "B sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y);
4405
                    return -1;
4406
                }
4407
                sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
4408
                h->sub_mb_type[i]=      b_sub_mb_type_info[ h->sub_mb_type[i] ].type;
4409
            }
4410
            if(   IS_DIRECT(h->sub_mb_type[0]) || IS_DIRECT(h->sub_mb_type[1])
4411
               || IS_DIRECT(h->sub_mb_type[2]) || IS_DIRECT(h->sub_mb_type[3])) {
4412
                pred_direct_motion(h, &mb_type);
4413
                h->ref_cache[0][scan8[4]] =
4414
                h->ref_cache[1][scan8[4]] =
4415
                h->ref_cache[0][scan8[12]] =
4416
                h->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE;
4417
            }
4418
        }else{
4419
            assert(h->slice_type_nos == FF_P_TYPE); //FIXME SP correct ?
4420
            for(i=0; i<4; i++){
4421
                h->sub_mb_type[i]= get_ue_golomb(&s->gb);
4422
                if(h->sub_mb_type[i] >=4){
4423
                    av_log(h->s.avctx, AV_LOG_ERROR, "P sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y);
4424
                    return -1;
4425
                }
4426
                sub_partition_count[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
4427
                h->sub_mb_type[i]=      p_sub_mb_type_info[ h->sub_mb_type[i] ].type;
4428
            }
4429
        }
4430

    
4431
        for(list=0; list<h->list_count; list++){
4432
            int ref_count= IS_REF0(mb_type) ? 1 : h->ref_count[list];
4433
            for(i=0; i<4; i++){
4434
                if(IS_DIRECT(h->sub_mb_type[i])) continue;
4435
                if(IS_DIR(h->sub_mb_type[i], 0, list)){
4436
                    unsigned int tmp = get_te0_golomb(&s->gb, ref_count); //FIXME init to 0 before and skip?
4437
                    if(tmp>=ref_count){
4438
                        av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", tmp);
4439
                        return -1;
4440
                    }
4441
                    ref[list][i]= tmp;
4442
                }else{
4443
                 //FIXME
4444
                    ref[list][i] = -1;
4445
                }
4446
            }
4447
        }
4448

    
4449
        if(dct8x8_allowed)
4450
            dct8x8_allowed = get_dct8x8_allowed(h);
4451

    
4452
        for(list=0; list<h->list_count; list++){
4453
            for(i=0; i<4; i++){
4454
                if(IS_DIRECT(h->sub_mb_type[i])) {
4455
                    h->ref_cache[list][ scan8[4*i] ] = h->ref_cache[list][ scan8[4*i]+1 ];
4456
                    continue;
4457
                }
4458
                h->ref_cache[list][ scan8[4*i]   ]=h->ref_cache[list][ scan8[4*i]+1 ]=
4459
                h->ref_cache[list][ scan8[4*i]+8 ]=h->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i];
4460

    
4461
                if(IS_DIR(h->sub_mb_type[i], 0, list)){
4462
                    const int sub_mb_type= h->sub_mb_type[i];
4463
                    const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1;
4464