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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};
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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;
74

    
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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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const uint8_t ff_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
const uint8_t ff_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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};
96

    
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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
    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]);
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        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     ] < 255 ? s->current_picture.mb_type[top_xy]     : 0;
182
        left_type[0] = h->slice_table[left_xy[0] ] < 255 ? s->current_picture.mb_type[left_xy[0]] : 0;
183
        left_type[1] = h->slice_table[left_xy[1] ] < 255 ? 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

    
209
    if(IS_INTRA(mb_type)){
210
        int type_mask= h->pps.constrained_intra_pred ? IS_INTRA(-1) : -1;
211
        h->topleft_samples_available=
212
        h->top_samples_available=
213
        h->left_samples_available= 0xFFFF;
214
        h->topright_samples_available= 0xEEEA;
215

    
216
        if(!(top_type & type_mask)){
217
            h->topleft_samples_available= 0xB3FF;
218
            h->top_samples_available= 0x33FF;
219
            h->topright_samples_available= 0x26EA;
220
        }
221
        if(IS_INTERLACED(mb_type) != IS_INTERLACED(left_type[0])){
222
            if(IS_INTERLACED(mb_type)){
223
                if(!(left_type[0] & type_mask)){
224
                    h->topleft_samples_available&= 0xDFFF;
225
                    h->left_samples_available&= 0x5FFF;
226
                }
227
                if(!(left_type[1] & type_mask)){
228
                    h->topleft_samples_available&= 0xFF5F;
229
                    h->left_samples_available&= 0xFF5F;
230
                }
231
            }else{
232
                int left_typei = h->slice_table[left_xy[0] + s->mb_stride ] == h->slice_num
233
                                ? s->current_picture.mb_type[left_xy[0] + s->mb_stride] : 0;
234
                assert(left_xy[0] == left_xy[1]);
235
                if(!((left_typei & type_mask) && (left_type[0] & type_mask))){
236
                    h->topleft_samples_available&= 0xDF5F;
237
                    h->left_samples_available&= 0x5F5F;
238
                }
239
            }
240
        }else{
241
            if(!(left_type[0] & type_mask)){
242
                h->topleft_samples_available&= 0xDF5F;
243
                h->left_samples_available&= 0x5F5F;
244
            }
245
        }
246

    
247
        if(!(topleft_type & type_mask))
248
            h->topleft_samples_available&= 0x7FFF;
249

    
250
        if(!(topright_type & type_mask))
251
            h->topright_samples_available&= 0xFBFF;
252

    
253
        if(IS_INTRA4x4(mb_type)){
254
            if(IS_INTRA4x4(top_type)){
255
                h->intra4x4_pred_mode_cache[4+8*0]= h->intra4x4_pred_mode[top_xy][4];
256
                h->intra4x4_pred_mode_cache[5+8*0]= h->intra4x4_pred_mode[top_xy][5];
257
                h->intra4x4_pred_mode_cache[6+8*0]= h->intra4x4_pred_mode[top_xy][6];
258
                h->intra4x4_pred_mode_cache[7+8*0]= h->intra4x4_pred_mode[top_xy][3];
259
            }else{
260
                int pred;
261
                if(!(top_type & type_mask))
262
                    pred= -1;
263
                else{
264
                    pred= 2;
265
                }
266
                h->intra4x4_pred_mode_cache[4+8*0]=
267
                h->intra4x4_pred_mode_cache[5+8*0]=
268
                h->intra4x4_pred_mode_cache[6+8*0]=
269
                h->intra4x4_pred_mode_cache[7+8*0]= pred;
270
            }
271
            for(i=0; i<2; i++){
272
                if(IS_INTRA4x4(left_type[i])){
273
                    h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[0+2*i]];
274
                    h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[1+2*i]];
275
                }else{
276
                    int pred;
277
                    if(!(left_type[i] & type_mask))
278
                        pred= -1;
279
                    else{
280
                        pred= 2;
281
                    }
282
                    h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
283
                    h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= pred;
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 inline void direct_dist_scale_factor(H264Context * const h){
898
    MpegEncContext * const s = &h->s;
899
    const int poc = h->s.current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ];
900
    const int poc1 = h->ref_list[1][0].poc;
901
    int i;
902
    for(i=0; i<h->ref_count[0]; i++){
903
        int poc0 = h->ref_list[0][i].poc;
904
        int td = av_clip(poc1 - poc0, -128, 127);
905
        if(td == 0 || h->ref_list[0][i].long_ref){
906
            h->dist_scale_factor[i] = 256;
907
        }else{
908
            int tb = av_clip(poc - poc0, -128, 127);
909
            int tx = (16384 + (FFABS(td) >> 1)) / td;
910
            h->dist_scale_factor[i] = av_clip((tb*tx + 32) >> 6, -1024, 1023);
911
        }
912
    }
913
    if(FRAME_MBAFF){
914
        for(i=0; i<h->ref_count[0]; i++){
915
            h->dist_scale_factor_field[2*i] =
916
            h->dist_scale_factor_field[2*i+1] = h->dist_scale_factor[i];
917
        }
918
    }
919
}
920
static inline void direct_ref_list_init(H264Context * const h){
921
    MpegEncContext * const s = &h->s;
922
    Picture * const ref1 = &h->ref_list[1][0];
923
    Picture * const cur = s->current_picture_ptr;
924
    int list, i, j;
925
    int sidx= s->picture_structure&1;
926
    int ref1sidx= ref1->reference&1;
927
    for(list=0; list<2; list++){
928
        cur->ref_count[sidx][list] = h->ref_count[list];
929
        for(j=0; j<h->ref_count[list]; j++)
930
            cur->ref_poc[sidx][list][j] = 4*h->ref_list[list][j].frame_num + (h->ref_list[list][j].reference&3);
931
    }
932
    if(s->picture_structure == PICT_FRAME){
933
        memcpy(cur->ref_count[0], cur->ref_count[1], sizeof(cur->ref_count[0]));
934
        memcpy(cur->ref_poc  [0], cur->ref_poc  [1], sizeof(cur->ref_poc  [0]));
935
    }
936
    if(cur->pict_type != FF_B_TYPE || h->direct_spatial_mv_pred)
937
        return;
938
    for(list=0; list<2; list++){
939
        for(i=0; i<ref1->ref_count[ref1sidx][list]; i++){
940
            int poc = ref1->ref_poc[ref1sidx][list][i];
941
            if(((poc&3) == 3) != (s->picture_structure == PICT_FRAME))
942
                poc= (poc&~3) + s->picture_structure;
943
            h->map_col_to_list0[list][i] = 0; /* bogus; fills in for missing frames */
944
            for(j=0; j<h->ref_count[list]; j++)
945
                if(4*h->ref_list[list][j].frame_num + (h->ref_list[list][j].reference&3) == poc){
946
                    h->map_col_to_list0[list][i] = j;
947
                    break;
948
                }
949
        }
950
    }
951
    if(FRAME_MBAFF){
952
        for(list=0; list<2; list++){
953
            for(i=0; i<ref1->ref_count[ref1sidx][list]; i++){
954
                j = h->map_col_to_list0[list][i];
955
                h->map_col_to_list0_field[list][2*i] = 2*j;
956
                h->map_col_to_list0_field[list][2*i+1] = 2*j+1;
957
            }
958
        }
959
    }
960
}
961

    
962
static inline void pred_direct_motion(H264Context * const h, int *mb_type){
963
    MpegEncContext * const s = &h->s;
964
    int b8_stride = h->b8_stride;
965
    int b4_stride = h->b_stride;
966
    int mb_xy = h->mb_xy;
967
    int mb_type_col[2];
968
    const int16_t (*l1mv0)[2], (*l1mv1)[2];
969
    const int8_t *l1ref0, *l1ref1;
970
    const int is_b8x8 = IS_8X8(*mb_type);
971
    unsigned int sub_mb_type;
972
    int i8, i4;
973

    
974
#define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16|MB_TYPE_INTRA4x4|MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM)
975

    
976
    if(IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])){ // AFL/AFR/FR/FL -> AFL/FL
977
        if(h->ref_list[1][0].reference == PICT_FRAME){   // AFL/AFR/FR/FL -> AFL
978
            if(!IS_INTERLACED(*mb_type)){                //     AFR/FR    -> AFL
979
                int cur_poc = s->current_picture_ptr->poc;
980
                int *col_poc = h->ref_list[1]->field_poc;
981
                int col_parity = FFABS(col_poc[0] - cur_poc) >= FFABS(col_poc[1] - cur_poc);
982
                mb_xy= s->mb_x + ((s->mb_y&~1) + col_parity)*s->mb_stride;
983
                b8_stride = 0;
984
            }
985
        }else if(!(s->picture_structure & h->ref_list[1][0].reference)){// FL -> FL & differ parity
986
            int fieldoff= 2*(h->ref_list[1][0].reference)-3;
987
            mb_xy += s->mb_stride*fieldoff;
988
        }
989
        goto single_col;
990
    }else{                                               // AFL/AFR/FR/FL -> AFR/FR
991
        if(IS_INTERLACED(*mb_type)){                     // AFL       /FL -> AFR/FR
992
            mb_xy= s->mb_x + (s->mb_y&~1)*s->mb_stride;
993
            mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy];
994
            mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + s->mb_stride];
995
            b8_stride *= 3;
996
            b4_stride *= 6;
997
            //FIXME IS_8X8(mb_type_col[0]) && !h->sps.direct_8x8_inference_flag
998
            if(    (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)
999
                && (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA)
1000
                && !is_b8x8){
1001
                sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1002
                *mb_type   |= MB_TYPE_16x8 |MB_TYPE_L0L1|MB_TYPE_DIRECT2; /* B_16x8 */
1003
            }else{
1004
                sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1005
                *mb_type   |= MB_TYPE_8x8|MB_TYPE_L0L1;
1006
            }
1007
        }else{                                           //     AFR/FR    -> AFR/FR
1008
single_col:
1009
            mb_type_col[0] =
1010
            mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy];
1011
            if(IS_8X8(mb_type_col[0]) && !h->sps.direct_8x8_inference_flag){
1012
                /* FIXME save sub mb types from previous frames (or derive from MVs)
1013
                * so we know exactly what block size to use */
1014
                sub_mb_type = MB_TYPE_8x8|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_4x4 */
1015
                *mb_type   |= MB_TYPE_8x8|MB_TYPE_L0L1;
1016
            }else if(!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)){
1017
                sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1018
                *mb_type   |= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_16x16 */
1019
            }else{
1020
                sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1021
                *mb_type   |= MB_TYPE_8x8|MB_TYPE_L0L1;
1022
            }
1023
        }
1024
    }
1025

    
1026
    l1mv0  = &h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]];
1027
    l1mv1  = &h->ref_list[1][0].motion_val[1][h->mb2b_xy [mb_xy]];
1028
    l1ref0 = &h->ref_list[1][0].ref_index [0][h->mb2b8_xy[mb_xy]];
1029
    l1ref1 = &h->ref_list[1][0].ref_index [1][h->mb2b8_xy[mb_xy]];
1030
    if(!b8_stride){
1031
        if(s->mb_y&1){
1032
            l1ref0 += h->b8_stride;
1033
            l1ref1 += h->b8_stride;
1034
            l1mv0  +=  2*b4_stride;
1035
            l1mv1  +=  2*b4_stride;
1036
        }
1037
    }
1038

    
1039
    if(h->direct_spatial_mv_pred){
1040
        int ref[2];
1041
        int mv[2][2];
1042
        int list;
1043

    
1044
        /* FIXME interlacing + spatial direct uses wrong colocated block positions */
1045

    
1046
        /* ref = min(neighbors) */
1047
        for(list=0; list<2; list++){
1048
            int refa = h->ref_cache[list][scan8[0] - 1];
1049
            int refb = h->ref_cache[list][scan8[0] - 8];
1050
            int refc = h->ref_cache[list][scan8[0] - 8 + 4];
1051
            if(refc == PART_NOT_AVAILABLE)
1052
                refc = h->ref_cache[list][scan8[0] - 8 - 1];
1053
            ref[list] = FFMIN3((unsigned)refa, (unsigned)refb, (unsigned)refc);
1054
            if(ref[list] < 0)
1055
                ref[list] = -1;
1056
        }
1057

    
1058
        if(ref[0] < 0 && ref[1] < 0){
1059
            ref[0] = ref[1] = 0;
1060
            mv[0][0] = mv[0][1] =
1061
            mv[1][0] = mv[1][1] = 0;
1062
        }else{
1063
            for(list=0; list<2; list++){
1064
                if(ref[list] >= 0)
1065
                    pred_motion(h, 0, 4, list, ref[list], &mv[list][0], &mv[list][1]);
1066
                else
1067
                    mv[list][0] = mv[list][1] = 0;
1068
            }
1069
        }
1070

    
1071
        if(ref[1] < 0){
1072
            if(!is_b8x8)
1073
                *mb_type &= ~MB_TYPE_L1;
1074
            sub_mb_type &= ~MB_TYPE_L1;
1075
        }else if(ref[0] < 0){
1076
            if(!is_b8x8)
1077
                *mb_type &= ~MB_TYPE_L0;
1078
            sub_mb_type &= ~MB_TYPE_L0;
1079
        }
1080

    
1081
        if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
1082
            for(i8=0; i8<4; i8++){
1083
                int x8 = i8&1;
1084
                int y8 = i8>>1;
1085
                int xy8 = x8+y8*b8_stride;
1086
                int xy4 = 3*x8+y8*b4_stride;
1087
                int a=0, b=0;
1088

    
1089
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1090
                    continue;
1091
                h->sub_mb_type[i8] = sub_mb_type;
1092

    
1093
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
1094
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
1095
                if(!IS_INTRA(mb_type_col[y8])
1096
                   && (   (l1ref0[xy8] == 0 && FFABS(l1mv0[xy4][0]) <= 1 && FFABS(l1mv0[xy4][1]) <= 1)
1097
                       || (l1ref0[xy8]  < 0 && l1ref1[xy8] == 0 && FFABS(l1mv1[xy4][0]) <= 1 && FFABS(l1mv1[xy4][1]) <= 1))){
1098
                    if(ref[0] > 0)
1099
                        a= pack16to32(mv[0][0],mv[0][1]);
1100
                    if(ref[1] > 0)
1101
                        b= pack16to32(mv[1][0],mv[1][1]);
1102
                }else{
1103
                    a= pack16to32(mv[0][0],mv[0][1]);
1104
                    b= pack16to32(mv[1][0],mv[1][1]);
1105
                }
1106
                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, a, 4);
1107
                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, b, 4);
1108
            }
1109
        }else if(IS_16X16(*mb_type)){
1110
            int a=0, b=0;
1111

    
1112
            fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
1113
            fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
1114
            if(!IS_INTRA(mb_type_col[0])
1115
               && (   (l1ref0[0] == 0 && FFABS(l1mv0[0][0]) <= 1 && FFABS(l1mv0[0][1]) <= 1)
1116
                   || (l1ref0[0]  < 0 && l1ref1[0] == 0 && FFABS(l1mv1[0][0]) <= 1 && FFABS(l1mv1[0][1]) <= 1
1117
                       && (h->x264_build>33 || !h->x264_build)))){
1118
                if(ref[0] > 0)
1119
                    a= pack16to32(mv[0][0],mv[0][1]);
1120
                if(ref[1] > 0)
1121
                    b= pack16to32(mv[1][0],mv[1][1]);
1122
            }else{
1123
                a= pack16to32(mv[0][0],mv[0][1]);
1124
                b= pack16to32(mv[1][0],mv[1][1]);
1125
            }
1126
            fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, a, 4);
1127
            fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, b, 4);
1128
        }else{
1129
            for(i8=0; i8<4; i8++){
1130
                const int x8 = i8&1;
1131
                const int y8 = i8>>1;
1132

    
1133
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1134
                    continue;
1135
                h->sub_mb_type[i8] = sub_mb_type;
1136

    
1137
                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mv[0][0],mv[0][1]), 4);
1138
                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mv[1][0],mv[1][1]), 4);
1139
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
1140
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
1141

    
1142
                /* col_zero_flag */
1143
                if(!IS_INTRA(mb_type_col[0]) && (   l1ref0[x8 + y8*b8_stride] == 0
1144
                                              || (l1ref0[x8 + y8*b8_stride] < 0 && l1ref1[x8 + y8*b8_stride] == 0
1145
                                                  && (h->x264_build>33 || !h->x264_build)))){
1146
                    const int16_t (*l1mv)[2]= l1ref0[x8 + y8*b8_stride] == 0 ? l1mv0 : l1mv1;
1147
                    if(IS_SUB_8X8(sub_mb_type)){
1148
                        const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride];
1149
                        if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
1150
                            if(ref[0] == 0)
1151
                                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1152
                            if(ref[1] == 0)
1153
                                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1154
                        }
1155
                    }else
1156
                    for(i4=0; i4<4; i4++){
1157
                        const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
1158
                        if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
1159
                            if(ref[0] == 0)
1160
                                *(uint32_t*)h->mv_cache[0][scan8[i8*4+i4]] = 0;
1161
                            if(ref[1] == 0)
1162
                                *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] = 0;
1163
                        }
1164
                    }
1165
                }
1166
            }
1167
        }
1168
    }else{ /* direct temporal mv pred */
1169
        const int *map_col_to_list0[2] = {h->map_col_to_list0[0], h->map_col_to_list0[1]};
1170
        const int *dist_scale_factor = h->dist_scale_factor;
1171

    
1172
        if(FRAME_MBAFF && IS_INTERLACED(*mb_type)){
1173
            map_col_to_list0[0] = h->map_col_to_list0_field[0];
1174
            map_col_to_list0[1] = h->map_col_to_list0_field[1];
1175
            dist_scale_factor = h->dist_scale_factor_field;
1176
        }
1177
        if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
1178
            /* FIXME assumes direct_8x8_inference == 1 */
1179
            int y_shift  = 2*!IS_INTERLACED(*mb_type);
1180
            int ref_shift= FRAME_MBAFF ? y_shift : 1;
1181

    
1182
            for(i8=0; i8<4; i8++){
1183
                const int x8 = i8&1;
1184
                const int y8 = i8>>1;
1185
                int ref0, scale;
1186
                const int16_t (*l1mv)[2]= l1mv0;
1187

    
1188
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1189
                    continue;
1190
                h->sub_mb_type[i8] = sub_mb_type;
1191

    
1192
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1193
                if(IS_INTRA(mb_type_col[y8])){
1194
                    fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
1195
                    fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1196
                    fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1197
                    continue;
1198
                }
1199

    
1200
                ref0 = l1ref0[x8 + y8*b8_stride];
1201
                if(ref0 >= 0)
1202
                    ref0 = map_col_to_list0[0][ref0*2>>ref_shift];
1203
                else{
1204
                    ref0 = map_col_to_list0[1][l1ref1[x8 + y8*b8_stride]*2>>ref_shift];
1205
                    l1mv= l1mv1;
1206
                }
1207
                scale = dist_scale_factor[ref0];
1208
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
1209

    
1210
                {
1211
                    const int16_t *mv_col = l1mv[x8*3 + y8*b4_stride];
1212
                    int my_col = (mv_col[1]<<y_shift)/2;
1213
                    int mx = (scale * mv_col[0] + 128) >> 8;
1214
                    int my = (scale * my_col + 128) >> 8;
1215
                    fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
1216
                    fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-my_col), 4);
1217
                }
1218
            }
1219
            return;
1220
        }
1221

    
1222
        /* one-to-one mv scaling */
1223

    
1224
        if(IS_16X16(*mb_type)){
1225
            int ref, mv0, mv1;
1226

    
1227
            fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, 0, 1);
1228
            if(IS_INTRA(mb_type_col[0])){
1229
                ref=mv0=mv1=0;
1230
            }else{
1231
                const int ref0 = l1ref0[0] >= 0 ? map_col_to_list0[0][l1ref0[0]]
1232
                                                : map_col_to_list0[1][l1ref1[0]];
1233
                const int scale = dist_scale_factor[ref0];
1234
                const int16_t *mv_col = l1ref0[0] >= 0 ? l1mv0[0] : l1mv1[0];
1235
                int mv_l0[2];
1236
                mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
1237
                mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
1238
                ref= ref0;
1239
                mv0= pack16to32(mv_l0[0],mv_l0[1]);
1240
                mv1= pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
1241
            }
1242
            fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
1243
            fill_rectangle(&h-> mv_cache[0][scan8[0]], 4, 4, 8, mv0, 4);
1244
            fill_rectangle(&h-> mv_cache[1][scan8[0]], 4, 4, 8, mv1, 4);
1245
        }else{
1246
            for(i8=0; i8<4; i8++){
1247
                const int x8 = i8&1;
1248
                const int y8 = i8>>1;
1249
                int ref0, scale;
1250
                const int16_t (*l1mv)[2]= l1mv0;
1251

    
1252
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1253
                    continue;
1254
                h->sub_mb_type[i8] = sub_mb_type;
1255
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1256
                if(IS_INTRA(mb_type_col[0])){
1257
                    fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
1258
                    fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1259
                    fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1260
                    continue;
1261
                }
1262

    
1263
                ref0 = l1ref0[x8 + y8*b8_stride];
1264
                if(ref0 >= 0)
1265
                    ref0 = map_col_to_list0[0][ref0];
1266
                else{
1267
                    ref0 = map_col_to_list0[1][l1ref1[x8 + y8*b8_stride]];
1268
                    l1mv= l1mv1;
1269
                }
1270
                scale = dist_scale_factor[ref0];
1271

    
1272
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
1273
                if(IS_SUB_8X8(sub_mb_type)){
1274
                    const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride];
1275
                    int mx = (scale * mv_col[0] + 128) >> 8;
1276
                    int my = (scale * mv_col[1] + 128) >> 8;
1277
                    fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
1278
                    fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-mv_col[1]), 4);
1279
                }else
1280
                for(i4=0; i4<4; i4++){
1281
                    const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
1282
                    int16_t *mv_l0 = h->mv_cache[0][scan8[i8*4+i4]];
1283
                    mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
1284
                    mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
1285
                    *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] =
1286
                        pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
1287
                }
1288
            }
1289
        }
1290
    }
1291
}
1292

    
1293
static inline void write_back_motion(H264Context *h, int mb_type){
1294
    MpegEncContext * const s = &h->s;
1295
    const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
1296
    const int b8_xy= 2*s->mb_x + 2*s->mb_y*h->b8_stride;
1297
    int list;
1298

    
1299
    if(!USES_LIST(mb_type, 0))
1300
        fill_rectangle(&s->current_picture.ref_index[0][b8_xy], 2, 2, h->b8_stride, (uint8_t)LIST_NOT_USED, 1);
1301

    
1302
    for(list=0; list<h->list_count; list++){
1303
        int y;
1304
        if(!USES_LIST(mb_type, list))
1305
            continue;
1306

    
1307
        for(y=0; y<4; y++){
1308
            *(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];
1309
            *(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];
1310
        }
1311
        if( h->pps.cabac ) {
1312
            if(IS_SKIP(mb_type))
1313
                fill_rectangle(h->mvd_table[list][b_xy], 4, 4, h->b_stride, 0, 4);
1314
            else
1315
            for(y=0; y<4; y++){
1316
                *(uint64_t*)h->mvd_table[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+0 + 8*y];
1317
                *(uint64_t*)h->mvd_table[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+2 + 8*y];
1318
            }
1319
        }
1320

    
1321
        {
1322
            int8_t *ref_index = &s->current_picture.ref_index[list][b8_xy];
1323
            ref_index[0+0*h->b8_stride]= h->ref_cache[list][scan8[0]];
1324
            ref_index[1+0*h->b8_stride]= h->ref_cache[list][scan8[4]];
1325
            ref_index[0+1*h->b8_stride]= h->ref_cache[list][scan8[8]];
1326
            ref_index[1+1*h->b8_stride]= h->ref_cache[list][scan8[12]];
1327
        }
1328
    }
1329

    
1330
    if(h->slice_type_nos == FF_B_TYPE && h->pps.cabac){
1331
        if(IS_8X8(mb_type)){
1332
            uint8_t *direct_table = &h->direct_table[b8_xy];
1333
            direct_table[1+0*h->b8_stride] = IS_DIRECT(h->sub_mb_type[1]) ? 1 : 0;
1334
            direct_table[0+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[2]) ? 1 : 0;
1335
            direct_table[1+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[3]) ? 1 : 0;
1336
        }
1337
    }
1338
}
1339

    
1340
/**
1341
 * Decodes a network abstraction layer unit.
1342
 * @param consumed is the number of bytes used as input
1343
 * @param length is the length of the array
1344
 * @param dst_length is the number of decoded bytes FIXME here or a decode rbsp tailing?
1345
 * @returns decoded bytes, might be src+1 if no escapes
1346
 */
1347
static const uint8_t *decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
1348
    int i, si, di;
1349
    uint8_t *dst;
1350
    int bufidx;
1351

    
1352
//    src[0]&0x80;                //forbidden bit
1353
    h->nal_ref_idc= src[0]>>5;
1354
    h->nal_unit_type= src[0]&0x1F;
1355

    
1356
    src++; length--;
1357
#if 0
1358
    for(i=0; i<length; i++)
1359
        printf("%2X ", src[i]);
1360
#endif
1361
    for(i=0; i+1<length; i+=2){
1362
        if(src[i]) continue;
1363
        if(i>0 && src[i-1]==0) i--;
1364
        if(i+2<length && src[i+1]==0 && src[i+2]<=3){
1365
            if(src[i+2]!=3){
1366
                /* startcode, so we must be past the end */
1367
                length=i;
1368
            }
1369
            break;
1370
        }
1371
    }
1372

    
1373
    if(i>=length-1){ //no escaped 0
1374
        *dst_length= length;
1375
        *consumed= length+1; //+1 for the header
1376
        return src;
1377
    }
1378

    
1379
    bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
1380
    h->rbsp_buffer[bufidx]= av_fast_realloc(h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length);
1381
    dst= h->rbsp_buffer[bufidx];
1382

    
1383
    if (dst == NULL){
1384
        return NULL;
1385
    }
1386

    
1387
//printf("decoding esc\n");
1388
    si=di=0;
1389
    while(si<length){
1390
        //remove escapes (very rare 1:2^22)
1391
        if(si+2<length && src[si]==0 && src[si+1]==0 && src[si+2]<=3){
1392
            if(src[si+2]==3){ //escape
1393
                dst[di++]= 0;
1394
                dst[di++]= 0;
1395
                si+=3;
1396
                continue;
1397
            }else //next start code
1398
                break;
1399
        }
1400

    
1401
        dst[di++]= src[si++];
1402
    }
1403

    
1404
    *dst_length= di;
1405
    *consumed= si + 1;//+1 for the header
1406
//FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
1407
    return dst;
1408
}
1409

    
1410
/**
1411
 * identifies the exact end of the bitstream
1412
 * @return the length of the trailing, or 0 if damaged
1413
 */
1414
static int decode_rbsp_trailing(H264Context *h, const uint8_t *src){
1415
    int v= *src;
1416
    int r;
1417

    
1418
    tprintf(h->s.avctx, "rbsp trailing %X\n", v);
1419

    
1420
    for(r=1; r<9; r++){
1421
        if(v&1) return r;
1422
        v>>=1;
1423
    }
1424
    return 0;
1425
}
1426

    
1427
/**
1428
 * IDCT transforms the 16 dc values and dequantizes them.
1429
 * @param qp quantization parameter
1430
 */
1431
static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
1432
#define stride 16
1433
    int i;
1434
    int temp[16]; //FIXME check if this is a good idea
1435
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
1436
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1437

    
1438
//memset(block, 64, 2*256);
1439
//return;
1440
    for(i=0; i<4; i++){
1441
        const int offset= y_offset[i];
1442
        const int z0= block[offset+stride*0] + block[offset+stride*4];
1443
        const int z1= block[offset+stride*0] - block[offset+stride*4];
1444
        const int z2= block[offset+stride*1] - block[offset+stride*5];
1445
        const int z3= block[offset+stride*1] + block[offset+stride*5];
1446

    
1447
        temp[4*i+0]= z0+z3;
1448
        temp[4*i+1]= z1+z2;
1449
        temp[4*i+2]= z1-z2;
1450
        temp[4*i+3]= z0-z3;
1451
    }
1452

    
1453
    for(i=0; i<4; i++){
1454
        const int offset= x_offset[i];
1455
        const int z0= temp[4*0+i] + temp[4*2+i];
1456
        const int z1= temp[4*0+i] - temp[4*2+i];
1457
        const int z2= temp[4*1+i] - temp[4*3+i];
1458
        const int z3= temp[4*1+i] + temp[4*3+i];
1459

    
1460
        block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual
1461
        block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
1462
        block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
1463
        block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
1464
    }
1465
}
1466

    
1467
#if 0
1468
/**
1469
 * DCT transforms the 16 dc values.
1470
 * @param qp quantization parameter ??? FIXME
1471
 */
1472
static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
1473
//    const int qmul= dequant_coeff[qp][0];
1474
    int i;
1475
    int temp[16]; //FIXME check if this is a good idea
1476
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
1477
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1478

1479
    for(i=0; i<4; i++){
1480
        const int offset= y_offset[i];
1481
        const int z0= block[offset+stride*0] + block[offset+stride*4];
1482
        const int z1= block[offset+stride*0] - block[offset+stride*4];
1483
        const int z2= block[offset+stride*1] - block[offset+stride*5];
1484
        const int z3= block[offset+stride*1] + block[offset+stride*5];
1485

1486
        temp[4*i+0]= z0+z3;
1487
        temp[4*i+1]= z1+z2;
1488
        temp[4*i+2]= z1-z2;
1489
        temp[4*i+3]= z0-z3;
1490
    }
1491

1492
    for(i=0; i<4; i++){
1493
        const int offset= x_offset[i];
1494
        const int z0= temp[4*0+i] + temp[4*2+i];
1495
        const int z1= temp[4*0+i] - temp[4*2+i];
1496
        const int z2= temp[4*1+i] - temp[4*3+i];
1497
        const int z3= temp[4*1+i] + temp[4*3+i];
1498

1499
        block[stride*0 +offset]= (z0 + z3)>>1;
1500
        block[stride*2 +offset]= (z1 + z2)>>1;
1501
        block[stride*8 +offset]= (z1 - z2)>>1;
1502
        block[stride*10+offset]= (z0 - z3)>>1;
1503
    }
1504
}
1505
#endif
1506

    
1507
#undef xStride
1508
#undef stride
1509

    
1510
static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
1511
    const int stride= 16*2;
1512
    const int xStride= 16;
1513
    int a,b,c,d,e;
1514

    
1515
    a= block[stride*0 + xStride*0];
1516
    b= block[stride*0 + xStride*1];
1517
    c= block[stride*1 + xStride*0];
1518
    d= block[stride*1 + xStride*1];
1519

    
1520
    e= a-b;
1521
    a= a+b;
1522
    b= c-d;
1523
    c= c+d;
1524

    
1525
    block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
1526
    block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
1527
    block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
1528
    block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
1529
}
1530

    
1531
#if 0
1532
static void chroma_dc_dct_c(DCTELEM *block){
1533
    const int stride= 16*2;
1534
    const int xStride= 16;
1535
    int a,b,c,d,e;
1536

1537
    a= block[stride*0 + xStride*0];
1538
    b= block[stride*0 + xStride*1];
1539
    c= block[stride*1 + xStride*0];
1540
    d= block[stride*1 + xStride*1];
1541

1542
    e= a-b;
1543
    a= a+b;
1544
    b= c-d;
1545
    c= c+d;
1546

1547
    block[stride*0 + xStride*0]= (a+c);
1548
    block[stride*0 + xStride*1]= (e+b);
1549
    block[stride*1 + xStride*0]= (a-c);
1550
    block[stride*1 + xStride*1]= (e-b);
1551
}
1552
#endif
1553

    
1554
/**
1555
 * gets the chroma qp.
1556
 */
1557
static inline int get_chroma_qp(H264Context *h, int t, int qscale){
1558
    return h->pps.chroma_qp_table[t][qscale];
1559
}
1560

    
1561
//FIXME need to check that this does not overflow signed 32 bit for low qp, I am not sure, it's very close
1562
//FIXME check that gcc inlines this (and optimizes intra & separate_dc stuff away)
1563
static inline int quantize_c(DCTELEM *block, uint8_t *scantable, int qscale, int intra, int separate_dc){
1564
    int i;
1565
    const int * const quant_table= quant_coeff[qscale];
1566
    const int bias= intra ? (1<<QUANT_SHIFT)/3 : (1<<QUANT_SHIFT)/6;
1567
    const unsigned int threshold1= (1<<QUANT_SHIFT) - bias - 1;
1568
    const unsigned int threshold2= (threshold1<<1);
1569
    int last_non_zero;
1570

    
1571
    if(separate_dc){
1572
        if(qscale<=18){
1573
            //avoid overflows
1574
            const int dc_bias= intra ? (1<<(QUANT_SHIFT-2))/3 : (1<<(QUANT_SHIFT-2))/6;
1575
            const unsigned int dc_threshold1= (1<<(QUANT_SHIFT-2)) - dc_bias - 1;
1576
            const unsigned int dc_threshold2= (dc_threshold1<<1);
1577

    
1578
            int level= block[0]*quant_coeff[qscale+18][0];
1579
            if(((unsigned)(level+dc_threshold1))>dc_threshold2){
1580
                if(level>0){
1581
                    level= (dc_bias + level)>>(QUANT_SHIFT-2);
1582
                    block[0]= level;
1583
                }else{
1584
                    level= (dc_bias - level)>>(QUANT_SHIFT-2);
1585
                    block[0]= -level;
1586
                }
1587
//                last_non_zero = i;
1588
            }else{
1589
                block[0]=0;
1590
            }
1591
        }else{
1592
            const int dc_bias= intra ? (1<<(QUANT_SHIFT+1))/3 : (1<<(QUANT_SHIFT+1))/6;
1593
            const unsigned int dc_threshold1= (1<<(QUANT_SHIFT+1)) - dc_bias - 1;
1594
            const unsigned int dc_threshold2= (dc_threshold1<<1);
1595

    
1596
            int level= block[0]*quant_table[0];
1597
            if(((unsigned)(level+dc_threshold1))>dc_threshold2){
1598
                if(level>0){
1599
                    level= (dc_bias + level)>>(QUANT_SHIFT+1);
1600
                    block[0]= level;
1601
                }else{
1602
                    level= (dc_bias - level)>>(QUANT_SHIFT+1);
1603
                    block[0]= -level;
1604
                }
1605
//                last_non_zero = i;
1606
            }else{
1607
                block[0]=0;
1608
            }
1609
        }
1610
        last_non_zero= 0;
1611
        i=1;
1612
    }else{
1613
        last_non_zero= -1;
1614
        i=0;
1615
    }
1616

    
1617
    for(; i<16; i++){
1618
        const int j= scantable[i];
1619
        int level= block[j]*quant_table[j];
1620

    
1621
//        if(   bias+level >= (1<<(QMAT_SHIFT - 3))
1622
//           || bias-level >= (1<<(QMAT_SHIFT - 3))){
1623
        if(((unsigned)(level+threshold1))>threshold2){
1624
            if(level>0){
1625
                level= (bias + level)>>QUANT_SHIFT;
1626
                block[j]= level;
1627
            }else{
1628
                level= (bias - level)>>QUANT_SHIFT;
1629
                block[j]= -level;
1630
            }
1631
            last_non_zero = i;
1632
        }else{
1633
            block[j]=0;
1634
        }
1635
    }
1636

    
1637
    return last_non_zero;
1638
}
1639

    
1640
static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
1641
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1642
                           int src_x_offset, int src_y_offset,
1643
                           qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
1644
    MpegEncContext * const s = &h->s;
1645
    const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
1646
    int my=       h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
1647
    const int luma_xy= (mx&3) + ((my&3)<<2);
1648
    uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
1649
    uint8_t * src_cb, * src_cr;
1650
    int extra_width= h->emu_edge_width;
1651
    int extra_height= h->emu_edge_height;
1652
    int emu=0;
1653
    const int full_mx= mx>>2;
1654
    const int full_my= my>>2;
1655
    const int pic_width  = 16*s->mb_width;
1656
    const int pic_height = 16*s->mb_height >> MB_FIELD;
1657

    
1658
    if(!pic->data[0]) //FIXME this is unacceptable, some sensible error concealment must be done for missing reference frames
1659
        return;
1660

    
1661
    if(mx&7) extra_width -= 3;
1662
    if(my&7) extra_height -= 3;
1663

    
1664
    if(   full_mx < 0-extra_width
1665
       || full_my < 0-extra_height
1666
       || full_mx + 16/*FIXME*/ > pic_width + extra_width
1667
       || full_my + 16/*FIXME*/ > pic_height + extra_height){
1668
        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);
1669
            src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
1670
        emu=1;
1671
    }
1672

    
1673
    qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
1674
    if(!square){
1675
        qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
1676
    }
1677

    
1678
    if(ENABLE_GRAY && s->flags&CODEC_FLAG_GRAY) return;
1679

    
1680
    if(MB_FIELD){
1681
        // chroma offset when predicting from a field of opposite parity
1682
        my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
1683
        emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
1684
    }
1685
    src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
1686
    src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
1687

    
1688
    if(emu){
1689
        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);
1690
            src_cb= s->edge_emu_buffer;
1691
    }
1692
    chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
1693

    
1694
    if(emu){
1695
        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);
1696
            src_cr= s->edge_emu_buffer;
1697
    }
1698
    chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
1699
}
1700

    
1701
static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
1702
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1703
                           int x_offset, int y_offset,
1704
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1705
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
1706
                           int list0, int list1){
1707
    MpegEncContext * const s = &h->s;
1708
    qpel_mc_func *qpix_op=  qpix_put;
1709
    h264_chroma_mc_func chroma_op= chroma_put;
1710

    
1711
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
1712
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
1713
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
1714
    x_offset += 8*s->mb_x;
1715
    y_offset += 8*(s->mb_y >> MB_FIELD);
1716

    
1717
    if(list0){
1718
        Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
1719
        mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
1720
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
1721
                           qpix_op, chroma_op);
1722

    
1723
        qpix_op=  qpix_avg;
1724
        chroma_op= chroma_avg;
1725
    }
1726

    
1727
    if(list1){
1728
        Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
1729
        mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
1730
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
1731
                           qpix_op, chroma_op);
1732
    }
1733
}
1734

    
1735
static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
1736
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1737
                           int x_offset, int y_offset,
1738
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1739
                           h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
1740
                           h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
1741
                           int list0, int list1){
1742
    MpegEncContext * const s = &h->s;
1743

    
1744
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
1745
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
1746
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
1747
    x_offset += 8*s->mb_x;
1748
    y_offset += 8*(s->mb_y >> MB_FIELD);
1749

    
1750
    if(list0 && list1){
1751
        /* don't optimize for luma-only case, since B-frames usually
1752
         * use implicit weights => chroma too. */
1753
        uint8_t *tmp_cb = s->obmc_scratchpad;
1754
        uint8_t *tmp_cr = s->obmc_scratchpad + 8;
1755
        uint8_t *tmp_y  = s->obmc_scratchpad + 8*h->mb_uvlinesize;
1756
        int refn0 = h->ref_cache[0][ scan8[n] ];
1757
        int refn1 = h->ref_cache[1][ scan8[n] ];
1758

    
1759
        mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
1760
                    dest_y, dest_cb, dest_cr,
1761
                    x_offset, y_offset, qpix_put, chroma_put);
1762
        mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
1763
                    tmp_y, tmp_cb, tmp_cr,
1764
                    x_offset, y_offset, qpix_put, chroma_put);
1765

    
1766
        if(h->use_weight == 2){
1767
            int weight0 = h->implicit_weight[refn0][refn1];
1768
            int weight1 = 64 - weight0;
1769
            luma_weight_avg(  dest_y,  tmp_y,  h->  mb_linesize, 5, weight0, weight1, 0);
1770
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
1771
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
1772
        }else{
1773
            luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
1774
                            h->luma_weight[0][refn0], h->luma_weight[1][refn1],
1775
                            h->luma_offset[0][refn0] + h->luma_offset[1][refn1]);
1776
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1777
                            h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0],
1778
                            h->chroma_offset[0][refn0][0] + h->chroma_offset[1][refn1][0]);
1779
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1780
                            h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1],
1781
                            h->chroma_offset[0][refn0][1] + h->chroma_offset[1][refn1][1]);
1782
        }
1783
    }else{
1784
        int list = list1 ? 1 : 0;
1785
        int refn = h->ref_cache[list][ scan8[n] ];
1786
        Picture *ref= &h->ref_list[list][refn];
1787
        mc_dir_part(h, ref, n, square, chroma_height, delta, list,
1788
                    dest_y, dest_cb, dest_cr, x_offset, y_offset,
1789
                    qpix_put, chroma_put);
1790

    
1791
        luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
1792
                       h->luma_weight[list][refn], h->luma_offset[list][refn]);
1793
        if(h->use_weight_chroma){
1794
            chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1795
                             h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]);
1796
            chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1797
                             h->chroma_weight[list][refn][1], h->chroma_offset[list][refn][1]);
1798
        }
1799
    }
1800
}
1801

    
1802
static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
1803
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1804
                           int x_offset, int y_offset,
1805
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1806
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
1807
                           h264_weight_func *weight_op, h264_biweight_func *weight_avg,
1808
                           int list0, int list1){
1809
    if((h->use_weight==2 && list0 && list1
1810
        && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32))
1811
       || h->use_weight==1)
1812
        mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
1813
                         x_offset, y_offset, qpix_put, chroma_put,
1814
                         weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
1815
    else
1816
        mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
1817
                    x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
1818
}
1819

    
1820
static inline void prefetch_motion(H264Context *h, int list){
1821
    /* fetch pixels for estimated mv 4 macroblocks ahead
1822
     * optimized for 64byte cache lines */
1823
    MpegEncContext * const s = &h->s;
1824
    const int refn = h->ref_cache[list][scan8[0]];
1825
    if(refn >= 0){
1826
        const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
1827
        const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
1828
        uint8_t **src= h->ref_list[list][refn].data;
1829
        int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
1830
        s->dsp.prefetch(src[0]+off, s->linesize, 4);
1831
        off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
1832
        s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
1833
    }
1834
}
1835

    
1836
static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1837
                      qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
1838
                      qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
1839
                      h264_weight_func *weight_op, h264_biweight_func *weight_avg){
1840
    MpegEncContext * const s = &h->s;
1841
    const int mb_xy= h->mb_xy;
1842
    const int mb_type= s->current_picture.mb_type[mb_xy];
1843

    
1844
    assert(IS_INTER(mb_type));
1845

    
1846
    prefetch_motion(h, 0);
1847

    
1848
    if(IS_16X16(mb_type)){
1849
        mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
1850
                qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
1851
                &weight_op[0], &weight_avg[0],
1852
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1853
    }else if(IS_16X8(mb_type)){
1854
        mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
1855
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
1856
                &weight_op[1], &weight_avg[1],
1857
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1858
        mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
1859
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
1860
                &weight_op[1], &weight_avg[1],
1861
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
1862
    }else if(IS_8X16(mb_type)){
1863
        mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
1864
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1865
                &weight_op[2], &weight_avg[2],
1866
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1867
        mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
1868
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1869
                &weight_op[2], &weight_avg[2],
1870
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
1871
    }else{
1872
        int i;
1873

    
1874
        assert(IS_8X8(mb_type));
1875

    
1876
        for(i=0; i<4; i++){
1877
            const int sub_mb_type= h->sub_mb_type[i];
1878
            const int n= 4*i;
1879
            int x_offset= (i&1)<<2;
1880
            int y_offset= (i&2)<<1;
1881

    
1882
            if(IS_SUB_8X8(sub_mb_type)){
1883
                mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1884
                    qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1885
                    &weight_op[3], &weight_avg[3],
1886
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1887
            }else if(IS_SUB_8X4(sub_mb_type)){
1888
                mc_part(h, n  , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1889
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
1890
                    &weight_op[4], &weight_avg[4],
1891
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1892
                mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
1893
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
1894
                    &weight_op[4], &weight_avg[4],
1895
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1896
            }else if(IS_SUB_4X8(sub_mb_type)){
1897
                mc_part(h, n  , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1898
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1899
                    &weight_op[5], &weight_avg[5],
1900
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1901
                mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
1902
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1903
                    &weight_op[5], &weight_avg[5],
1904
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1905
            }else{
1906
                int j;
1907
                assert(IS_SUB_4X4(sub_mb_type));
1908
                for(j=0; j<4; j++){
1909
                    int sub_x_offset= x_offset + 2*(j&1);
1910
                    int sub_y_offset= y_offset +   (j&2);
1911
                    mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
1912
                        qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1913
                        &weight_op[6], &weight_avg[6],
1914
                        IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1915
                }
1916
            }
1917
        }
1918
    }
1919

    
1920
    prefetch_motion(h, 1);
1921
}
1922

    
1923
static av_cold void decode_init_vlc(void){
1924
    static int done = 0;
1925

    
1926
    if (!done) {
1927
        int i;
1928
        int offset;
1929
        done = 1;
1930

    
1931
        chroma_dc_coeff_token_vlc.table = chroma_dc_coeff_token_vlc_table;
1932
        chroma_dc_coeff_token_vlc.table_allocated = chroma_dc_coeff_token_vlc_table_size;
1933
        init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5,
1934
                 &chroma_dc_coeff_token_len [0], 1, 1,
1935
                 &chroma_dc_coeff_token_bits[0], 1, 1,
1936
                 INIT_VLC_USE_NEW_STATIC);
1937

    
1938
        offset = 0;
1939
        for(i=0; i<4; i++){
1940
            coeff_token_vlc[i].table = coeff_token_vlc_tables+offset;
1941
            coeff_token_vlc[i].table_allocated = coeff_token_vlc_tables_size[i];
1942
            init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17,
1943
                     &coeff_token_len [i][0], 1, 1,
1944
                     &coeff_token_bits[i][0], 1, 1,
1945
                     INIT_VLC_USE_NEW_STATIC);
1946
            offset += coeff_token_vlc_tables_size[i];
1947
        }
1948
        /*
1949
         * This is a one time safety check to make sure that
1950
         * the packed static coeff_token_vlc table sizes
1951
         * were initialized correctly.
1952
         */
1953
        assert(offset == sizeof(coeff_token_vlc_tables)/(sizeof(VLC_TYPE)*2));
1954

    
1955
        for(i=0; i<3; i++){
1956
            chroma_dc_total_zeros_vlc[i].table = chroma_dc_total_zeros_vlc_tables[i];
1957
            chroma_dc_total_zeros_vlc[i].table_allocated = chroma_dc_total_zeros_vlc_tables_size;
1958
            init_vlc(&chroma_dc_total_zeros_vlc[i],
1959
                     CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4,
1960
                     &chroma_dc_total_zeros_len [i][0], 1, 1,
1961
                     &chroma_dc_total_zeros_bits[i][0], 1, 1,
1962
                     INIT_VLC_USE_NEW_STATIC);
1963
        }
1964
        for(i=0; i<15; i++){
1965
            total_zeros_vlc[i].table = total_zeros_vlc_tables[i];
1966
            total_zeros_vlc[i].table_allocated = total_zeros_vlc_tables_size;
1967
            init_vlc(&total_zeros_vlc[i],
1968
                     TOTAL_ZEROS_VLC_BITS, 16,
1969
                     &total_zeros_len [i][0], 1, 1,
1970
                     &total_zeros_bits[i][0], 1, 1,
1971
                     INIT_VLC_USE_NEW_STATIC);
1972
        }
1973

    
1974
        for(i=0; i<6; i++){
1975
            run_vlc[i].table = run_vlc_tables[i];
1976
            run_vlc[i].table_allocated = run_vlc_tables_size;
1977
            init_vlc(&run_vlc[i],
1978
                     RUN_VLC_BITS, 7,
1979
                     &run_len [i][0], 1, 1,
1980
                     &run_bits[i][0], 1, 1,
1981
                     INIT_VLC_USE_NEW_STATIC);
1982
        }
1983
        run7_vlc.table = run7_vlc_table,
1984
        run7_vlc.table_allocated = run7_vlc_table_size;
1985
        init_vlc(&run7_vlc, RUN7_VLC_BITS, 16,
1986
                 &run_len [6][0], 1, 1,
1987
                 &run_bits[6][0], 1, 1,
1988
                 INIT_VLC_USE_NEW_STATIC);
1989
    }
1990
}
1991

    
1992
static void free_tables(H264Context *h){
1993
    int i;
1994
    H264Context *hx;
1995
    av_freep(&h->intra4x4_pred_mode);
1996
    av_freep(&h->chroma_pred_mode_table);
1997
    av_freep(&h->cbp_table);
1998
    av_freep(&h->mvd_table[0]);
1999
    av_freep(&h->mvd_table[1]);
2000
    av_freep(&h->direct_table);
2001
    av_freep(&h->non_zero_count);
2002
    av_freep(&h->slice_table_base);
2003
    h->slice_table= NULL;
2004

    
2005
    av_freep(&h->mb2b_xy);
2006
    av_freep(&h->mb2b8_xy);
2007

    
2008
    for(i = 0; i < MAX_SPS_COUNT; i++)
2009
        av_freep(h->sps_buffers + i);
2010

    
2011
    for(i = 0; i < MAX_PPS_COUNT; i++)
2012
        av_freep(h->pps_buffers + i);
2013

    
2014
    for(i = 0; i < h->s.avctx->thread_count; i++) {
2015
        hx = h->thread_context[i];
2016
        if(!hx) continue;
2017
        av_freep(&hx->top_borders[1]);
2018
        av_freep(&hx->top_borders[0]);
2019
        av_freep(&hx->s.obmc_scratchpad);
2020
    }
2021
}
2022

    
2023
static void init_dequant8_coeff_table(H264Context *h){
2024
    int i,q,x;
2025
    const int transpose = (h->s.dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
2026
    h->dequant8_coeff[0] = h->dequant8_buffer[0];
2027
    h->dequant8_coeff[1] = h->dequant8_buffer[1];
2028

    
2029
    for(i=0; i<2; i++ ){
2030
        if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
2031
            h->dequant8_coeff[1] = h->dequant8_buffer[0];
2032
            break;
2033
        }
2034

    
2035
        for(q=0; q<52; q++){
2036
            int shift = ff_div6[q];
2037
            int idx = ff_rem6[q];
2038
            for(x=0; x<64; x++)
2039
                h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
2040
                    ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
2041
                    h->pps.scaling_matrix8[i][x]) << shift;
2042
        }
2043
    }
2044
}
2045

    
2046
static void init_dequant4_coeff_table(H264Context *h){
2047
    int i,j,q,x;
2048
    const int transpose = (h->s.dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
2049
    for(i=0; i<6; i++ ){
2050
        h->dequant4_coeff[i] = h->dequant4_buffer[i];
2051
        for(j=0; j<i; j++){
2052
            if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
2053
                h->dequant4_coeff[i] = h->dequant4_buffer[j];
2054
                break;
2055
            }
2056
        }
2057
        if(j<i)
2058
            continue;
2059

    
2060
        for(q=0; q<52; q++){
2061
            int shift = ff_div6[q] + 2;
2062
            int idx = ff_rem6[q];
2063
            for(x=0; x<16; x++)
2064
                h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
2065
                    ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
2066
                    h->pps.scaling_matrix4[i][x]) << shift;
2067
        }
2068
    }
2069
}
2070

    
2071
static void init_dequant_tables(H264Context *h){
2072
    int i,x;
2073
    init_dequant4_coeff_table(h);
2074
    if(h->pps.transform_8x8_mode)
2075
        init_dequant8_coeff_table(h);
2076
    if(h->sps.transform_bypass){
2077
        for(i=0; i<6; i++)
2078
            for(x=0; x<16; x++)
2079
                h->dequant4_coeff[i][0][x] = 1<<6;
2080
        if(h->pps.transform_8x8_mode)
2081
            for(i=0; i<2; i++)
2082
                for(x=0; x<64; x++)
2083
                    h->dequant8_coeff[i][0][x] = 1<<6;
2084
    }
2085
}
2086

    
2087

    
2088
/**
2089
 * allocates tables.
2090
 * needs width/height
2091
 */
2092
static int alloc_tables(H264Context *h){
2093
    MpegEncContext * const s = &h->s;
2094
    const int big_mb_num= s->mb_stride * (s->mb_height+1);
2095
    int x,y;
2096

    
2097
    CHECKED_ALLOCZ(h->intra4x4_pred_mode, big_mb_num * 8  * sizeof(uint8_t))
2098

    
2099
    CHECKED_ALLOCZ(h->non_zero_count    , big_mb_num * 16 * sizeof(uint8_t))
2100
    CHECKED_ALLOCZ(h->slice_table_base  , (big_mb_num+s->mb_stride) * sizeof(uint8_t))
2101
    CHECKED_ALLOCZ(h->cbp_table, big_mb_num * sizeof(uint16_t))
2102

    
2103
    CHECKED_ALLOCZ(h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t))
2104
    CHECKED_ALLOCZ(h->mvd_table[0], 32*big_mb_num * sizeof(uint16_t));
2105
    CHECKED_ALLOCZ(h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t));
2106
    CHECKED_ALLOCZ(h->direct_table, 32*big_mb_num * sizeof(uint8_t));
2107

    
2108
    memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride)  * sizeof(uint8_t));
2109
    h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
2110

    
2111
    CHECKED_ALLOCZ(h->mb2b_xy  , big_mb_num * sizeof(uint32_t));
2112
    CHECKED_ALLOCZ(h->mb2b8_xy , big_mb_num * sizeof(uint32_t));
2113
    for(y=0; y<s->mb_height; y++){
2114
        for(x=0; x<s->mb_width; x++){
2115
            const int mb_xy= x + y*s->mb_stride;
2116
            const int b_xy = 4*x + 4*y*h->b_stride;
2117
            const int b8_xy= 2*x + 2*y*h->b8_stride;
2118

    
2119
            h->mb2b_xy [mb_xy]= b_xy;
2120
            h->mb2b8_xy[mb_xy]= b8_xy;
2121
        }
2122
    }
2123

    
2124
    s->obmc_scratchpad = NULL;
2125

    
2126
    if(!h->dequant4_coeff[0])
2127
        init_dequant_tables(h);
2128

    
2129
    return 0;
2130
fail:
2131
    free_tables(h);
2132
    return -1;
2133
}
2134

    
2135
/**
2136
 * Mimic alloc_tables(), but for every context thread.
2137
 */
2138
static void clone_tables(H264Context *dst, H264Context *src){
2139
    dst->intra4x4_pred_mode       = src->intra4x4_pred_mode;
2140
    dst->non_zero_count           = src->non_zero_count;
2141
    dst->slice_table              = src->slice_table;
2142
    dst->cbp_table                = src->cbp_table;
2143
    dst->mb2b_xy                  = src->mb2b_xy;
2144
    dst->mb2b8_xy                 = src->mb2b8_xy;
2145
    dst->chroma_pred_mode_table   = src->chroma_pred_mode_table;
2146
    dst->mvd_table[0]             = src->mvd_table[0];
2147
    dst->mvd_table[1]             = src->mvd_table[1];
2148
    dst->direct_table             = src->direct_table;
2149

    
2150
    dst->s.obmc_scratchpad = NULL;
2151
    ff_h264_pred_init(&dst->hpc, src->s.codec_id);
2152
}
2153

    
2154
/**
2155
 * Init context
2156
 * Allocate buffers which are not shared amongst multiple threads.
2157
 */
2158
static int context_init(H264Context *h){
2159
    CHECKED_ALLOCZ(h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t))
2160
    CHECKED_ALLOCZ(h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t))
2161

    
2162
    return 0;
2163
fail:
2164
    return -1; // free_tables will clean up for us
2165
}
2166

    
2167
static av_cold void common_init(H264Context *h){
2168
    MpegEncContext * const s = &h->s;
2169

    
2170
    s->width = s->avctx->width;
2171
    s->height = s->avctx->height;
2172
    s->codec_id= s->avctx->codec->id;
2173

    
2174
    ff_h264_pred_init(&h->hpc, s->codec_id);
2175

    
2176
    h->dequant_coeff_pps= -1;
2177
    s->unrestricted_mv=1;
2178
    s->decode=1; //FIXME
2179

    
2180
    memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
2181
    memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
2182
}
2183

    
2184
static av_cold int decode_init(AVCodecContext *avctx){
2185
    H264Context *h= avctx->priv_data;
2186
    MpegEncContext * const s = &h->s;
2187

    
2188
    MPV_decode_defaults(s);
2189

    
2190
    s->avctx = avctx;
2191
    common_init(h);
2192

    
2193
    s->out_format = FMT_H264;
2194
    s->workaround_bugs= avctx->workaround_bugs;
2195

    
2196
    // set defaults
2197
//    s->decode_mb= ff_h263_decode_mb;
2198
    s->quarter_sample = 1;
2199
    s->low_delay= 1;
2200

    
2201
    if(avctx->codec_id == CODEC_ID_SVQ3)
2202
        avctx->pix_fmt= PIX_FMT_YUVJ420P;
2203
    else
2204
        avctx->pix_fmt= PIX_FMT_YUV420P;
2205

    
2206
    decode_init_vlc();
2207

    
2208
    if(avctx->extradata_size > 0 && avctx->extradata &&
2209
       *(char *)avctx->extradata == 1){
2210
        h->is_avc = 1;
2211
        h->got_avcC = 0;
2212
    } else {
2213
        h->is_avc = 0;
2214
    }
2215

    
2216
    h->thread_context[0] = h;
2217
    h->outputed_poc = INT_MIN;
2218
    return 0;
2219
}
2220

    
2221
static int frame_start(H264Context *h){
2222
    MpegEncContext * const s = &h->s;
2223
    int i;
2224

    
2225
    if(MPV_frame_start(s, s->avctx) < 0)
2226
        return -1;
2227
    ff_er_frame_start(s);
2228
    /*
2229
     * MPV_frame_start uses pict_type to derive key_frame.
2230
     * This is incorrect for H.264; IDR markings must be used.
2231
     * Zero here; IDR markings per slice in frame or fields are ORed in later.
2232
     * See decode_nal_units().
2233
     */
2234
    s->current_picture_ptr->key_frame= 0;
2235

    
2236
    assert(s->linesize && s->uvlinesize);
2237

    
2238
    for(i=0; i<16; i++){
2239
        h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
2240
        h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
2241
    }
2242
    for(i=0; i<4; i++){
2243
        h->block_offset[16+i]=
2244
        h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2245
        h->block_offset[24+16+i]=
2246
        h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2247
    }
2248

    
2249
    /* can't be in alloc_tables because linesize isn't known there.
2250
     * FIXME: redo bipred weight to not require extra buffer? */
2251
    for(i = 0; i < s->avctx->thread_count; i++)
2252
        if(!h->thread_context[i]->s.obmc_scratchpad)
2253
            h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
2254

    
2255
    /* some macroblocks will be accessed before they're available */
2256
    if(FRAME_MBAFF || s->avctx->thread_count > 1)
2257
        memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(uint8_t));
2258

    
2259
//    s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
2260

    
2261
    // We mark the current picture as non-reference after allocating it, so
2262
    // that if we break out due to an error it can be released automatically
2263
    // in the next MPV_frame_start().
2264
    // SVQ3 as well as most other codecs have only last/next/current and thus
2265
    // get released even with set reference, besides SVQ3 and others do not
2266
    // mark frames as reference later "naturally".
2267
    if(s->codec_id != CODEC_ID_SVQ3)
2268
        s->current_picture_ptr->reference= 0;
2269

    
2270
    s->current_picture_ptr->field_poc[0]=
2271
    s->current_picture_ptr->field_poc[1]= INT_MAX;
2272
    assert(s->current_picture_ptr->long_ref==0);
2273

    
2274
    return 0;
2275
}
2276

    
2277
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){
2278
    MpegEncContext * const s = &h->s;
2279
    int i;
2280
    int step    = 1;
2281
    int offset  = 1;
2282
    int uvoffset= 1;
2283
    int top_idx = 1;
2284
    int skiplast= 0;
2285

    
2286
    src_y  -=   linesize;
2287
    src_cb -= uvlinesize;
2288
    src_cr -= uvlinesize;
2289

    
2290
    if(!simple && FRAME_MBAFF){
2291
        if(s->mb_y&1){
2292
            offset  = MB_MBAFF ? 1 : 17;
2293
            uvoffset= MB_MBAFF ? 1 : 9;
2294
            if(!MB_MBAFF){
2295
                *(uint64_t*)(h->top_borders[0][s->mb_x]+ 0)= *(uint64_t*)(src_y +  15*linesize);
2296
                *(uint64_t*)(h->top_borders[0][s->mb_x]+ 8)= *(uint64_t*)(src_y +8+15*linesize);
2297
                if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2298
                    *(uint64_t*)(h->top_borders[0][s->mb_x]+16)= *(uint64_t*)(src_cb+7*uvlinesize);
2299
                    *(uint64_t*)(h->top_borders[0][s->mb_x]+24)= *(uint64_t*)(src_cr+7*uvlinesize);
2300
                }
2301
            }
2302
        }else{
2303
            if(!MB_MBAFF){
2304
                h->left_border[0]= h->top_borders[0][s->mb_x][15];
2305
                if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2306
                    h->left_border[34   ]= h->top_borders[0][s->mb_x][16+7  ];
2307
                    h->left_border[34+18]= h->top_borders[0][s->mb_x][16+8+7];
2308
                }
2309
                skiplast= 1;
2310
            }
2311
            offset  =
2312
            uvoffset=
2313
            top_idx = MB_MBAFF ? 0 : 1;
2314
        }
2315
        step= MB_MBAFF ? 2 : 1;
2316
    }
2317

    
2318
    // There are two lines saved, the line above the the top macroblock of a pair,
2319
    // and the line above the bottom macroblock
2320
    h->left_border[offset]= h->top_borders[top_idx][s->mb_x][15];
2321
    for(i=1; i<17 - skiplast; i++){
2322
        h->left_border[offset+i*step]= src_y[15+i*  linesize];
2323
    }
2324

    
2325
    *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0)= *(uint64_t*)(src_y +  16*linesize);
2326
    *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8)= *(uint64_t*)(src_y +8+16*linesize);
2327

    
2328
    if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2329
        h->left_border[uvoffset+34   ]= h->top_borders[top_idx][s->mb_x][16+7];
2330
        h->left_border[uvoffset+34+18]= h->top_borders[top_idx][s->mb_x][24+7];
2331
        for(i=1; i<9 - skiplast; i++){
2332
            h->left_border[uvoffset+34   +i*step]= src_cb[7+i*uvlinesize];
2333
            h->left_border[uvoffset+34+18+i*step]= src_cr[7+i*uvlinesize];
2334
        }
2335
        *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16)= *(uint64_t*)(src_cb+8*uvlinesize);
2336
        *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24)= *(uint64_t*)(src_cr+8*uvlinesize);
2337
    }
2338
}
2339

    
2340
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){
2341
    MpegEncContext * const s = &h->s;
2342
    int temp8, i;
2343
    uint64_t temp64;
2344
    int deblock_left;
2345
    int deblock_top;
2346
    int mb_xy;
2347
    int step    = 1;
2348
    int offset  = 1;
2349
    int uvoffset= 1;
2350
    int top_idx = 1;
2351

    
2352
    if(!simple && FRAME_MBAFF){
2353
        if(s->mb_y&1){
2354
            offset  = MB_MBAFF ? 1 : 17;
2355
            uvoffset= MB_MBAFF ? 1 : 9;
2356
        }else{
2357
            offset  =
2358
            uvoffset=
2359
            top_idx = MB_MBAFF ? 0 : 1;
2360
        }
2361
        step= MB_MBAFF ? 2 : 1;
2362
    }
2363

    
2364
    if(h->deblocking_filter == 2) {
2365
        mb_xy = h->mb_xy;
2366
        deblock_left = h->slice_table[mb_xy] == h->slice_table[mb_xy - 1];
2367
        deblock_top  = h->slice_table[mb_xy] == h->slice_table[h->top_mb_xy];
2368
    } else {
2369
        deblock_left = (s->mb_x > 0);
2370
        deblock_top =  (s->mb_y > 0);
2371
    }
2372

    
2373
    src_y  -=   linesize + 1;
2374
    src_cb -= uvlinesize + 1;
2375
    src_cr -= uvlinesize + 1;
2376

    
2377
#define XCHG(a,b,t,xchg)\
2378
t= a;\
2379
if(xchg)\
2380
    a= b;\
2381
b= t;
2382

    
2383
    if(deblock_left){
2384
        for(i = !deblock_top; i<16; i++){
2385
            XCHG(h->left_border[offset+i*step], src_y [i*  linesize], temp8, xchg);
2386
        }
2387
        XCHG(h->left_border[offset+i*step], src_y [i*  linesize], temp8, 1);
2388
    }
2389

    
2390
    if(deblock_top){
2391
        XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg);
2392
        XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1);
2393
        if(s->mb_x+1 < s->mb_width){
2394
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x+1]), *(uint64_t*)(src_y +17), temp64, 1);
2395
        }
2396
    }
2397

    
2398
    if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2399
        if(deblock_left){
2400
            for(i = !deblock_top; i<8; i++){
2401
                XCHG(h->left_border[uvoffset+34   +i*step], src_cb[i*uvlinesize], temp8, xchg);
2402
                XCHG(h->left_border[uvoffset+34+18+i*step], src_cr[i*uvlinesize], temp8, xchg);
2403
            }
2404
            XCHG(h->left_border[uvoffset+34   +i*step], src_cb[i*uvlinesize], temp8, 1);
2405
            XCHG(h->left_border[uvoffset+34+18+i*step], src_cr[i*uvlinesize], temp8, 1);
2406
        }
2407
        if(deblock_top){
2408
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1);
2409
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1);
2410
        }
2411
    }
2412
}
2413

    
2414
static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
2415
    MpegEncContext * const s = &h->s;
2416
    const int mb_x= s->mb_x;
2417
    const int mb_y= s->mb_y;
2418
    const int mb_xy= h->mb_xy;
2419
    const int mb_type= s->current_picture.mb_type[mb_xy];
2420
    uint8_t  *dest_y, *dest_cb, *dest_cr;
2421
    int linesize, uvlinesize /*dct_offset*/;
2422
    int i;
2423
    int *block_offset = &h->block_offset[0];
2424
    const unsigned int bottom = mb_y & 1;
2425
    const int transform_bypass = (s->qscale == 0 && h->sps.transform_bypass), is_h264 = (simple || s->codec_id == CODEC_ID_H264);
2426
    void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
2427
    void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
2428

    
2429
    dest_y  = s->current_picture.data[0] + (mb_y * 16* s->linesize  ) + mb_x * 16;
2430
    dest_cb = s->current_picture.data[1] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2431
    dest_cr = s->current_picture.data[2] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2432

    
2433
    s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
2434
    s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
2435

    
2436
    if (!simple && MB_FIELD) {
2437
        linesize   = h->mb_linesize   = s->linesize * 2;
2438
        uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2439
        block_offset = &h->block_offset[24];
2440
        if(mb_y&1){ //FIXME move out of this function?
2441
            dest_y -= s->linesize*15;
2442
            dest_cb-= s->uvlinesize*7;
2443
            dest_cr-= s->uvlinesize*7;
2444
        }
2445
        if(FRAME_MBAFF) {
2446
            int list;
2447
            for(list=0; list<h->list_count; list++){
2448
                if(!USES_LIST(mb_type, list))
2449
                    continue;
2450
                if(IS_16X16(mb_type)){
2451
                    int8_t *ref = &h->ref_cache[list][scan8[0]];
2452
                    fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
2453
                }else{
2454
                    for(i=0; i<16; i+=4){
2455
                        //FIXME can refs be smaller than 8x8 when !direct_8x8_inference ?
2456
                        int ref = h->ref_cache[list][scan8[i]];
2457
                        if(ref >= 0)
2458
                            fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
2459
                    }
2460
                }
2461
            }
2462
        }
2463
    } else {
2464
        linesize   = h->mb_linesize   = s->linesize;
2465
        uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2466
//        dct_offset = s->linesize * 16;
2467
    }
2468

    
2469
    if(transform_bypass){
2470
        idct_dc_add =
2471
        idct_add = IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
2472
    }else if(IS_8x8DCT(mb_type)){
2473
        idct_dc_add = s->dsp.h264_idct8_dc_add;
2474
        idct_add = s->dsp.h264_idct8_add;
2475
    }else{
2476
        idct_dc_add = s->dsp.h264_idct_dc_add;
2477
        idct_add = s->dsp.h264_idct_add;
2478
    }
2479

    
2480
    if (!simple && IS_INTRA_PCM(mb_type)) {
2481
        for (i=0; i<16; i++) {
2482
            memcpy(dest_y + i*  linesize, h->mb       + i*8, 16);
2483
        }
2484
        for (i=0; i<8; i++) {
2485
            memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4,  8);
2486
            memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4,  8);
2487
        }
2488
    } else {
2489
        if(IS_INTRA(mb_type)){
2490
            if(h->deblocking_filter)
2491
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
2492

    
2493
            if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2494
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
2495
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
2496
            }
2497

    
2498
            if(IS_INTRA4x4(mb_type)){
2499
                if(simple || !s->encoding){
2500
                    if(IS_8x8DCT(mb_type)){
2501
                        for(i=0; i<16; i+=4){
2502
                            uint8_t * const ptr= dest_y + block_offset[i];
2503
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2504
                            const int nnz = h->non_zero_count_cache[ scan8[i] ];
2505
                            h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
2506
                                                   (h->topright_samples_available<<i)&0x4000, linesize);
2507
                            if(nnz){
2508
                                if(nnz == 1 && h->mb[i*16])
2509
                                    idct_dc_add(ptr, h->mb + i*16, linesize);
2510
                                else
2511
                                    idct_add(ptr, h->mb + i*16, linesize);
2512
                            }
2513
                        }
2514
                    }else
2515
                    for(i=0; i<16; i++){
2516
                        uint8_t * const ptr= dest_y + block_offset[i];
2517
                        uint8_t *topright;
2518
                        const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2519
                        int nnz, tr;
2520

    
2521
                        if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
2522
                            const int topright_avail= (h->topright_samples_available<<i)&0x8000;
2523
                            assert(mb_y || linesize <= block_offset[i]);
2524
                            if(!topright_avail){
2525
                                tr= ptr[3 - linesize]*0x01010101;
2526
                                topright= (uint8_t*) &tr;
2527
                            }else
2528
                                topright= ptr + 4 - linesize;
2529
                        }else
2530
                            topright= NULL;
2531

    
2532
                        h->hpc.pred4x4[ dir ](ptr, topright, linesize);
2533
                        nnz = h->non_zero_count_cache[ scan8[i] ];
2534
                        if(nnz){
2535
                            if(is_h264){
2536
                                if(nnz == 1 && h->mb[i*16])
2537
                                    idct_dc_add(ptr, h->mb + i*16, linesize);
2538
                                else
2539
                                    idct_add(ptr, h->mb + i*16, linesize);
2540
                            }else
2541
                                svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
2542
                        }
2543
                    }
2544
                }
2545
            }else{
2546
                h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
2547
                if(is_h264){
2548
                    if(!transform_bypass)
2549
                        h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
2550
                }else
2551
                    svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
2552
            }
2553
            if(h->deblocking_filter)
2554
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
2555
        }else if(is_h264){
2556
            hl_motion(h, dest_y, dest_cb, dest_cr,
2557
                      s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
2558
                      s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
2559
                      s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab);
2560
        }
2561

    
2562

    
2563
        if(!IS_INTRA4x4(mb_type)){
2564
            if(is_h264){
2565
                if(IS_INTRA16x16(mb_type)){
2566
                    for(i=0; i<16; i++){
2567
                        if(h->non_zero_count_cache[ scan8[i] ])
2568
                            idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2569
                        else if(h->mb[i*16])
2570
                            idct_dc_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2571
                    }
2572
                }else{
2573
                    const int di = IS_8x8DCT(mb_type) ? 4 : 1;
2574
                    for(i=0; i<16; i+=di){
2575
                        int nnz = h->non_zero_count_cache[ scan8[i] ];
2576
                        if(nnz){
2577
                            if(nnz==1 && h->mb[i*16])
2578
                                idct_dc_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2579
                            else
2580
                                idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2581
                        }
2582
                    }
2583
                }
2584
            }else{
2585
                for(i=0; i<16; i++){
2586
                    if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
2587
                        uint8_t * const ptr= dest_y + block_offset[i];
2588
                        svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
2589
                    }
2590
                }
2591
            }
2592
        }
2593

    
2594
        if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2595
            uint8_t *dest[2] = {dest_cb, dest_cr};
2596
            if(transform_bypass){
2597
                idct_add = idct_dc_add = s->dsp.add_pixels4;
2598
            }else{
2599
                idct_add = s->dsp.h264_idct_add;
2600
                idct_dc_add = s->dsp.h264_idct_dc_add;
2601
                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]);
2602
                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]);
2603
            }
2604
            if(is_h264){
2605
                for(i=16; i<16+8; i++){
2606
                    if(h->non_zero_count_cache[ scan8[i] ])
2607
                        idct_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
2608
                    else if(h->mb[i*16])
2609
                        idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
2610
                }
2611
            }else{
2612
                for(i=16; i<16+8; i++){
2613
                    if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2614
                        uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
2615
                        svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
2616
                    }
2617
                }
2618
            }
2619
        }
2620
    }
2621
    if(h->deblocking_filter) {
2622
        backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, simple);
2623
        fill_caches(h, mb_type, 1); //FIXME don't fill stuff which isn't used by filter_mb
2624
        h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2625
        h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2626
        if (!simple && FRAME_MBAFF) {
2627
            filter_mb     (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2628
        } else {
2629
            filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2630
        }
2631
    }
2632
}
2633

    
2634
/**
2635
 * Process a macroblock; this case avoids checks for expensive uncommon cases.
2636
 */
2637
static void hl_decode_mb_simple(H264Context *h){
2638
    hl_decode_mb_internal(h, 1);
2639
}
2640

    
2641
/**
2642
 * Process a macroblock; this handles edge cases, such as interlacing.
2643
 */
2644
static void av_noinline hl_decode_mb_complex(H264Context *h){
2645
    hl_decode_mb_internal(h, 0);
2646
}
2647

    
2648
static void hl_decode_mb(H264Context *h){
2649
    MpegEncContext * const s = &h->s;
2650
    const int mb_xy= h->mb_xy;
2651
    const int mb_type= s->current_picture.mb_type[mb_xy];
2652
    int is_complex = FRAME_MBAFF || MB_FIELD || IS_INTRA_PCM(mb_type) || s->codec_id != CODEC_ID_H264 ||
2653
                    (ENABLE_GRAY && (s->flags&CODEC_FLAG_GRAY)) || (ENABLE_H264_ENCODER && s->encoding) || ENABLE_SMALL;
2654

    
2655
    if(ENABLE_H264_ENCODER && !s->decode)
2656
        return;
2657

    
2658
    if (is_complex)
2659
        hl_decode_mb_complex(h);
2660
    else hl_decode_mb_simple(h);
2661
}
2662

    
2663
static void pic_as_field(Picture *pic, const int parity){
2664
    int i;
2665
    for (i = 0; i < 4; ++i) {
2666
        if (parity == PICT_BOTTOM_FIELD)
2667
            pic->data[i] += pic->linesize[i];
2668
        pic->reference = parity;
2669
        pic->linesize[i] *= 2;
2670
    }
2671
    pic->poc= pic->field_poc[parity == PICT_BOTTOM_FIELD];
2672
}
2673

    
2674
static int split_field_copy(Picture *dest, Picture *src,
2675
                            int parity, int id_add){
2676
    int match = !!(src->reference & parity);
2677

    
2678
    if (match) {
2679
        *dest = *src;
2680
        if(parity != PICT_FRAME){
2681
            pic_as_field(dest, parity);
2682
            dest->pic_id *= 2;
2683
            dest->pic_id += id_add;
2684
        }
2685
    }
2686

    
2687
    return match;
2688
}
2689

    
2690
static int build_def_list(Picture *def, Picture **in, int len, int is_long, int sel){
2691
    int i[2]={0};
2692
    int index=0;
2693

    
2694
    while(i[0]<len || i[1]<len){
2695
        while(i[0]<len && !(in[ i[0] ] && (in[ i[0] ]->reference & sel)))
2696
            i[0]++;
2697
        while(i[1]<len && !(in[ i[1] ] && (in[ i[1] ]->reference & (sel^3))))
2698
            i[1]++;
2699
        if(i[0] < len){
2700
            in[ i[0] ]->pic_id= is_long ? i[0] : in[ i[0] ]->frame_num;
2701
            split_field_copy(&def[index++], in[ i[0]++ ], sel  , 1);
2702
        }
2703
        if(i[1] < len){
2704
            in[ i[1] ]->pic_id= is_long ? i[1] : in[ i[1] ]->frame_num;
2705
            split_field_copy(&def[index++], in[ i[1]++ ], sel^3, 0);
2706
        }
2707
    }
2708

    
2709
    return index;
2710
}
2711

    
2712
static int add_sorted(Picture **sorted, Picture **src, int len, int limit, int dir){
2713
    int i, best_poc;
2714
    int out_i= 0;
2715

    
2716
    for(;;){
2717
        best_poc= dir ? INT_MIN : INT_MAX;
2718

    
2719
        for(i=0; i<len; i++){
2720
            const int poc= src[i]->poc;
2721
            if(((poc > limit) ^ dir) && ((poc < best_poc) ^ dir)){
2722
                best_poc= poc;
2723
                sorted[out_i]= src[i];
2724
            }
2725
        }
2726
        if(best_poc == (dir ? INT_MIN : INT_MAX))
2727
            break;
2728
        limit= sorted[out_i++]->poc - dir;
2729
    }
2730
    return out_i;
2731
}
2732

    
2733
/**
2734
 * fills the default_ref_list.
2735
 */
2736
static int fill_default_ref_list(H264Context *h){
2737
    MpegEncContext * const s = &h->s;
2738
    int i, len;
2739

    
2740
    if(h->slice_type_nos==FF_B_TYPE){
2741
        Picture *sorted[32];
2742
        int cur_poc, list;
2743
        int lens[2];
2744

    
2745
        if(FIELD_PICTURE)
2746
            cur_poc= s->current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ];
2747
        else
2748
            cur_poc= s->current_picture_ptr->poc;
2749

    
2750
        for(list= 0; list<2; list++){
2751
            len= add_sorted(sorted    , h->short_ref, h->short_ref_count, cur_poc, 1^list);
2752
            len+=add_sorted(sorted+len, h->short_ref, h->short_ref_count, cur_poc, 0^list);
2753
            assert(len<=32);
2754
            len= build_def_list(h->default_ref_list[list]    , sorted     , len, 0, s->picture_structure);
2755
            len+=build_def_list(h->default_ref_list[list]+len, h->long_ref, 16 , 1, s->picture_structure);
2756
            assert(len<=32);
2757

    
2758
            if(len < h->ref_count[list])
2759
                memset(&h->default_ref_list[list][len], 0, sizeof(Picture)*(h->ref_count[list] - len));
2760
            lens[list]= len;
2761
        }
2762

    
2763
        if(lens[0] == lens[1] && lens[1] > 1){
2764
            for(i=0; h->default_ref_list[0][i].data[0] == h->default_ref_list[1][i].data[0] && i<lens[0]; i++);
2765
            if(i == lens[0])
2766
                FFSWAP(Picture, h->default_ref_list[1][0], h->default_ref_list[1][1]);
2767
        }
2768
    }else{
2769
        len = build_def_list(h->default_ref_list[0]    , h->short_ref, h->short_ref_count, 0, s->picture_structure);
2770
        len+= build_def_list(h->default_ref_list[0]+len, h-> long_ref, 16                , 1, s->picture_structure);
2771
        assert(len <= 32);
2772
        if(len < h->ref_count[0])
2773
            memset(&h->default_ref_list[0][len], 0, sizeof(Picture)*(h->ref_count[0] - len));
2774
    }
2775
#ifdef TRACE
2776
    for (i=0; i<h->ref_count[0]; i++) {
2777
        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]);
2778
    }
2779
    if(h->slice_type_nos==FF_B_TYPE){
2780
        for (i=0; i<h->ref_count[1]; i++) {
2781
            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]);
2782
        }
2783
    }
2784
#endif
2785
    return 0;
2786
}
2787

    
2788
static void print_short_term(H264Context *h);
2789
static void print_long_term(H264Context *h);
2790

    
2791
/**
2792
 * Extract structure information about the picture described by pic_num in
2793
 * the current decoding context (frame or field). Note that pic_num is
2794
 * picture number without wrapping (so, 0<=pic_num<max_pic_num).
2795
 * @param pic_num picture number for which to extract structure information
2796
 * @param structure one of PICT_XXX describing structure of picture
2797
 *                      with pic_num
2798
 * @return frame number (short term) or long term index of picture
2799
 *         described by pic_num
2800
 */
2801
static int pic_num_extract(H264Context *h, int pic_num, int *structure){
2802
    MpegEncContext * const s = &h->s;
2803

    
2804
    *structure = s->picture_structure;
2805
    if(FIELD_PICTURE){
2806
        if (!(pic_num & 1))
2807
            /* opposite field */
2808
            *structure ^= PICT_FRAME;
2809
        pic_num >>= 1;
2810
    }
2811

    
2812
    return pic_num;
2813
}
2814

    
2815
static int decode_ref_pic_list_reordering(H264Context *h){
2816
    MpegEncContext * const s = &h->s;
2817
    int list, index, pic_structure;
2818

    
2819
    print_short_term(h);
2820
    print_long_term(h);
2821

    
2822
    for(list=0; list<h->list_count; list++){
2823
        memcpy(h->ref_list[list], h->default_ref_list[list], sizeof(Picture)*h->ref_count[list]);
2824

    
2825
        if(get_bits1(&s->gb)){
2826
            int pred= h->curr_pic_num;
2827

    
2828
            for(index=0; ; index++){
2829
                unsigned int reordering_of_pic_nums_idc= get_ue_golomb(&s->gb);
2830
                unsigned int pic_id;
2831
                int i;
2832
                Picture *ref = NULL;
2833

    
2834
                if(reordering_of_pic_nums_idc==3)
2835
                    break;
2836

    
2837
                if(index >= h->ref_count[list]){
2838
                    av_log(h->s.avctx, AV_LOG_ERROR, "reference count overflow\n");
2839
                    return -1;
2840
                }
2841

    
2842
                if(reordering_of_pic_nums_idc<3){
2843
                    if(reordering_of_pic_nums_idc<2){
2844
                        const unsigned int abs_diff_pic_num= get_ue_golomb(&s->gb) + 1;
2845
                        int frame_num;
2846

    
2847
                        if(abs_diff_pic_num > h->max_pic_num){
2848
                            av_log(h->s.avctx, AV_LOG_ERROR, "abs_diff_pic_num overflow\n");
2849
                            return -1;
2850
                        }
2851

    
2852
                        if(reordering_of_pic_nums_idc == 0) pred-= abs_diff_pic_num;
2853
                        else                                pred+= abs_diff_pic_num;
2854
                        pred &= h->max_pic_num - 1;
2855

    
2856
                        frame_num = pic_num_extract(h, pred, &pic_structure);
2857

    
2858
                        for(i= h->short_ref_count-1; i>=0; i--){
2859
                            ref = h->short_ref[i];
2860
                            assert(ref->reference);
2861
                            assert(!ref->long_ref);
2862
                            if(
2863
                                   ref->frame_num == frame_num &&
2864
                                   (ref->reference & pic_structure)
2865
                              )
2866
                                break;
2867
                        }
2868
                        if(i>=0)
2869
                            ref->pic_id= pred;
2870
                    }else{
2871
                        int long_idx;
2872
                        pic_id= get_ue_golomb(&s->gb); //long_term_pic_idx
2873

    
2874
                        long_idx= pic_num_extract(h, pic_id, &pic_structure);
2875

    
2876
                        if(long_idx>31){
2877
                            av_log(h->s.avctx, AV_LOG_ERROR, "long_term_pic_idx overflow\n");
2878
                            return -1;
2879
                        }
2880
                        ref = h->long_ref[long_idx];
2881
                        assert(!(ref && !ref->reference));
2882
                        if(ref && (ref->reference & pic_structure)){
2883
                            ref->pic_id= pic_id;
2884
                            assert(ref->long_ref);
2885
                            i=0;
2886
                        }else{
2887
                            i=-1;
2888
                        }
2889
                    }
2890

    
2891
                    if (i < 0) {
2892
                        av_log(h->s.avctx, AV_LOG_ERROR, "reference picture missing during reorder\n");
2893
                        memset(&h->ref_list[list][index], 0, sizeof(Picture)); //FIXME
2894
                    } else {
2895
                        for(i=index; i+1<h->ref_count[list]; i++){
2896
                            if(ref->long_ref == h->ref_list[list][i].long_ref && ref->pic_id == h->ref_list[list][i].pic_id)
2897
                                break;
2898
                        }
2899
                        for(; i > index; i--){
2900
                            h->ref_list[list][i]= h->ref_list[list][i-1];
2901
                        }
2902
                        h->ref_list[list][index]= *ref;
2903
                        if (FIELD_PICTURE){
2904
                            pic_as_field(&h->ref_list[list][index], pic_structure);
2905
                        }
2906
                    }
2907
                }else{
2908
                    av_log(h->s.avctx, AV_LOG_ERROR, "illegal reordering_of_pic_nums_idc\n");
2909
                    return -1;
2910
                }
2911
            }
2912
        }
2913
    }
2914
    for(list=0; list<h->list_count; list++){
2915
        for(index= 0; index < h->ref_count[list]; index++){
2916
            if(!h->ref_list[list][index].data[0]){
2917
                av_log(h->s.avctx, AV_LOG_ERROR, "Missing reference picture\n");
2918
                h->ref_list[list][index]= s->current_picture; //FIXME this is not a sensible solution
2919
            }
2920
        }
2921
    }
2922

    
2923
    if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
2924
        direct_dist_scale_factor(h);
2925
    direct_ref_list_init(h);
2926
    return 0;
2927
}
2928

    
2929
static void fill_mbaff_ref_list(H264Context *h){
2930
    int list, i, j;
2931
    for(list=0; list<2; list++){ //FIXME try list_count
2932
        for(i=0; i<h->ref_count[list]; i++){
2933
            Picture *frame = &h->ref_list[list][i];
2934
            Picture *field = &h->ref_list[list][16+2*i];
2935
            field[0] = *frame;
2936
            for(j=0; j<3; j++)
2937
                field[0].linesize[j] <<= 1;
2938
            field[0].reference = PICT_TOP_FIELD;
2939
            field[1] = field[0];
2940
            for(j=0; j<3; j++)
2941
                field[1].data[j] += frame->linesize[j];
2942
            field[1].reference = PICT_BOTTOM_FIELD;
2943

    
2944
            h->luma_weight[list][16+2*i] = h->luma_weight[list][16+2*i+1] = h->luma_weight[list][i];
2945
            h->luma_offset[list][16+2*i] = h->luma_offset[list][16+2*i+1] = h->luma_offset[list][i];
2946
            for(j=0; j<2; j++){
2947
                h->chroma_weight[list][16+2*i][j] = h->chroma_weight[list][16+2*i+1][j] = h->chroma_weight[list][i][j];
2948
                h->chroma_offset[list][16+2*i][j] = h->chroma_offset[list][16+2*i+1][j] = h->chroma_offset[list][i][j];
2949
            }
2950
        }
2951
    }
2952
    for(j=0; j<h->ref_count[1]; j++){
2953
        for(i=0; i<h->ref_count[0]; i++)
2954
            h->implicit_weight[j][16+2*i] = h->implicit_weight[j][16+2*i+1] = h->implicit_weight[j][i];
2955
        memcpy(h->implicit_weight[16+2*j],   h->implicit_weight[j], sizeof(*h->implicit_weight));
2956
        memcpy(h->implicit_weight[16+2*j+1], h->implicit_weight[j], sizeof(*h->implicit_weight));
2957
    }
2958
}
2959

    
2960
static int pred_weight_table(H264Context *h){
2961
    MpegEncContext * const s = &h->s;
2962
    int list, i;
2963
    int luma_def, chroma_def;
2964

    
2965
    h->use_weight= 0;
2966
    h->use_weight_chroma= 0;
2967
    h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
2968
    h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
2969
    luma_def = 1<<h->luma_log2_weight_denom;
2970
    chroma_def = 1<<h->chroma_log2_weight_denom;
2971

    
2972
    for(list=0; list<2; list++){
2973
        for(i=0; i<h->ref_count[list]; i++){
2974
            int luma_weight_flag, chroma_weight_flag;
2975

    
2976
            luma_weight_flag= get_bits1(&s->gb);
2977
            if(luma_weight_flag){
2978
                h->luma_weight[list][i]= get_se_golomb(&s->gb);
2979
                h->luma_offset[list][i]= get_se_golomb(&s->gb);
2980
                if(   h->luma_weight[list][i] != luma_def
2981
                   || h->luma_offset[list][i] != 0)
2982
                    h->use_weight= 1;
2983
            }else{
2984
                h->luma_weight[list][i]= luma_def;
2985
                h->luma_offset[list][i]= 0;
2986
            }
2987

    
2988
            if(CHROMA){
2989
                chroma_weight_flag= get_bits1(&s->gb);
2990
                if(chroma_weight_flag){
2991
                    int j;
2992
                    for(j=0; j<2; j++){
2993
                        h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
2994
                        h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
2995
                        if(   h->chroma_weight[list][i][j] != chroma_def
2996
                        || h->chroma_offset[list][i][j] != 0)
2997
                            h->use_weight_chroma= 1;
2998
                    }
2999
                }else{
3000
                    int j;
3001
                    for(j=0; j<2; j++){
3002
                        h->chroma_weight[list][i][j]= chroma_def;
3003
                        h->chroma_offset[list][i][j]= 0;
3004
                    }
3005
                }
3006
            }
3007
        }
3008
        if(h->slice_type_nos != FF_B_TYPE) break;
3009
    }
3010
    h->use_weight= h->use_weight || h->use_weight_chroma;
3011
    return 0;
3012
}
3013

    
3014
static void implicit_weight_table(H264Context *h){
3015
    MpegEncContext * const s = &h->s;
3016
    int ref0, ref1;
3017
    int cur_poc = s->current_picture_ptr->poc;
3018

    
3019
    if(   h->ref_count[0] == 1 && h->ref_count[1] == 1
3020
       && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
3021
        h->use_weight= 0;
3022
        h->use_weight_chroma= 0;
3023
        return;
3024
    }
3025

    
3026
    h->use_weight= 2;
3027
    h->use_weight_chroma= 2;
3028
    h->luma_log2_weight_denom= 5;
3029
    h->chroma_log2_weight_denom= 5;
3030

    
3031
    for(ref0=0; ref0 < h->ref_count[0]; ref0++){
3032
        int poc0 = h->ref_list[0][ref0].poc;
3033
        for(ref1=0; ref1 < h->ref_count[1]; ref1++){
3034
            int poc1 = h->ref_list[1][ref1].poc;
3035
            int td = av_clip(poc1 - poc0, -128, 127);
3036
            if(td){
3037
                int tb = av_clip(cur_poc - poc0, -128, 127);
3038
                int tx = (16384 + (FFABS(td) >> 1)) / td;
3039
                int dist_scale_factor = av_clip((tb*tx + 32) >> 6, -1024, 1023) >> 2;
3040
                if(dist_scale_factor < -64 || dist_scale_factor > 128)
3041
                    h->implicit_weight[ref0][ref1] = 32;
3042
                else
3043
                    h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor;
3044
            }else
3045
                h->implicit_weight[ref0][ref1] = 32;
3046
        }
3047
    }
3048
}
3049

    
3050
/**
3051
 * Mark a picture as no longer needed for reference. The refmask
3052
 * argument allows unreferencing of individual fields or the whole frame.
3053
 * If the picture becomes entirely unreferenced, but is being held for
3054
 * display purposes, it is marked as such.
3055
 * @param refmask mask of fields to unreference; the mask is bitwise
3056
 *                anded with the reference marking of pic
3057
 * @return non-zero if pic becomes entirely unreferenced (except possibly
3058
 *         for display purposes) zero if one of the fields remains in
3059
 *         reference
3060
 */
3061
static inline int unreference_pic(H264Context *h, Picture *pic, int refmask){
3062
    int i;
3063
    if (pic->reference &= refmask) {
3064
        return 0;
3065
    } else {
3066
        for(i = 0; h->delayed_pic[i]; i++)
3067
            if(pic == h->delayed_pic[i]){
3068
                pic->reference=DELAYED_PIC_REF;
3069
                break;
3070
            }
3071
        return 1;
3072
    }
3073
}
3074

    
3075
/**
3076
 * instantaneous decoder refresh.
3077
 */
3078
static void idr(H264Context *h){
3079
    int i;
3080

    
3081
    for(i=0; i<16; i++){
3082
        remove_long(h, i, 0);
3083
    }
3084
    assert(h->long_ref_count==0);
3085

    
3086
    for(i=0; i<h->short_ref_count; i++){
3087
        unreference_pic(h, h->short_ref[i], 0);
3088
        h->short_ref[i]= NULL;
3089
    }
3090
    h->short_ref_count=0;
3091
    h->prev_frame_num= 0;
3092
    h->prev_frame_num_offset= 0;
3093
    h->prev_poc_msb=
3094
    h->prev_poc_lsb= 0;
3095
}
3096

    
3097
/* forget old pics after a seek */
3098
static void flush_dpb(AVCodecContext *avctx){
3099
    H264Context *h= avctx->priv_data;
3100
    int i;
3101
    for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
3102
        if(h->delayed_pic[i])
3103
            h->delayed_pic[i]->reference= 0;
3104
        h->delayed_pic[i]= NULL;
3105
    }
3106
    h->outputed_poc= INT_MIN;
3107
    idr(h);
3108
    if(h->s.current_picture_ptr)
3109
        h->s.current_picture_ptr->reference= 0;
3110
    h->s.first_field= 0;
3111
    ff_mpeg_flush(avctx);
3112
}
3113

    
3114
/**
3115
 * Find a Picture in the short term reference list by frame number.
3116
 * @param frame_num frame number to search for
3117
 * @param idx the index into h->short_ref where returned picture is found
3118
 *            undefined if no picture found.
3119
 * @return pointer to the found picture, or NULL if no pic with the provided
3120
 *                 frame number is found
3121
 */
3122
static Picture * find_short(H264Context *h, int frame_num, int *idx){
3123
    MpegEncContext * const s = &h->s;
3124
    int i;
3125

    
3126
    for(i=0; i<h->short_ref_count; i++){
3127
        Picture *pic= h->short_ref[i];
3128
        if(s->avctx->debug&FF_DEBUG_MMCO)
3129
            av_log(h->s.avctx, AV_LOG_DEBUG, "%d %d %p\n", i, pic->frame_num, pic);
3130
        if(pic->frame_num == frame_num) {
3131
            *idx = i;
3132
            return pic;
3133
        }
3134
    }
3135
    return NULL;
3136
}
3137

    
3138
/**
3139
 * Remove a picture from the short term reference list by its index in
3140
 * that list.  This does no checking on the provided index; it is assumed
3141
 * to be valid. Other list entries are shifted down.
3142
 * @param i index into h->short_ref of picture to remove.
3143
 */
3144
static void remove_short_at_index(H264Context *h, int i){
3145
    assert(i >= 0 && i < h->short_ref_count);
3146
    h->short_ref[i]= NULL;
3147
    if (--h->short_ref_count)
3148
        memmove(&h->short_ref[i], &h->short_ref[i+1], (h->short_ref_count - i)*sizeof(Picture*));
3149
}
3150

    
3151
/**
3152
 *
3153
 * @return the removed picture or NULL if an error occurs
3154
 */
3155
static Picture * remove_short(H264Context *h, int frame_num, int ref_mask){
3156
    MpegEncContext * const s = &h->s;
3157
    Picture *pic;
3158
    int i;
3159

    
3160
    if(s->avctx->debug&FF_DEBUG_MMCO)
3161
        av_log(h->s.avctx, AV_LOG_DEBUG, "remove short %d count %d\n", frame_num, h->short_ref_count);
3162

    
3163
    pic = find_short(h, frame_num, &i);
3164
    if (pic){
3165
        if(unreference_pic(h, pic, ref_mask))
3166
        remove_short_at_index(h, i);
3167
    }
3168

    
3169
    return pic;
3170
}
3171

    
3172
/**
3173
 * Remove a picture from the long term reference list by its index in
3174
 * that list.
3175
 * @return the removed picture or NULL if an error occurs
3176
 */
3177
static Picture * remove_long(H264Context *h, int i, int ref_mask){
3178
    Picture *pic;
3179

    
3180
    pic= h->long_ref[i];
3181
    if (pic){
3182
        if(unreference_pic(h, pic, ref_mask)){
3183
            assert(h->long_ref[i]->long_ref == 1);
3184
            h->long_ref[i]->long_ref= 0;
3185
            h->long_ref[i]= NULL;
3186
            h->long_ref_count--;
3187
        }
3188
    }
3189

    
3190
    return pic;
3191
}
3192

    
3193
/**
3194
 * print short term list
3195
 */
3196
static void print_short_term(H264Context *h) {
3197
    uint32_t i;
3198
    if(h->s.avctx->debug&FF_DEBUG_MMCO) {
3199
        av_log(h->s.avctx, AV_LOG_DEBUG, "short term list:\n");
3200
        for(i=0; i<h->short_ref_count; i++){
3201
            Picture *pic= h->short_ref[i];
3202
            av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]);
3203
        }
3204
    }
3205
}
3206

    
3207
/**
3208
 * print long term list
3209
 */
3210
static void print_long_term(H264Context *h) {
3211
    uint32_t i;
3212
    if(h->s.avctx->debug&FF_DEBUG_MMCO) {
3213
        av_log(h->s.avctx, AV_LOG_DEBUG, "long term list:\n");
3214
        for(i = 0; i < 16; i++){
3215
            Picture *pic= h->long_ref[i];
3216
            if (pic) {
3217
                av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]);
3218
            }
3219
        }
3220
    }
3221
}
3222

    
3223
/**
3224
 * Executes the reference picture marking (memory management control operations).
3225
 */
3226
static int execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){
3227
    MpegEncContext * const s = &h->s;
3228
    int i, j;
3229
    int current_ref_assigned=0;
3230
    Picture *pic;
3231

    
3232
    if((s->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0)
3233
        av_log(h->s.avctx, AV_LOG_DEBUG, "no mmco here\n");
3234

    
3235
    for(i=0; i<mmco_count; i++){
3236
        int structure, frame_num;
3237
        if(s->avctx->debug&FF_DEBUG_MMCO)
3238
            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);
3239

    
3240
        if(   mmco[i].opcode == MMCO_SHORT2UNUSED
3241
           || mmco[i].opcode == MMCO_SHORT2LONG){
3242
            frame_num = pic_num_extract(h, mmco[i].short_pic_num, &structure);
3243
            pic = find_short(h, frame_num, &j);
3244
            if(!pic){
3245
                if(mmco[i].opcode != MMCO_SHORT2LONG || !h->long_ref[mmco[i].long_arg]
3246
                   || h->long_ref[mmco[i].long_arg]->frame_num != frame_num)
3247
                av_log(h->s.avctx, AV_LOG_ERROR, "mmco: unref short failure\n");
3248
                continue;
3249
            }
3250
        }
3251

    
3252
        switch(mmco[i].opcode){
3253
        case MMCO_SHORT2UNUSED:
3254
            if(s->avctx->debug&FF_DEBUG_MMCO)
3255
                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);
3256
            remove_short(h, frame_num, structure ^ PICT_FRAME);
3257
            break;
3258
        case MMCO_SHORT2LONG:
3259
                if (h->long_ref[mmco[i].long_arg] != pic)
3260
                    remove_long(h, mmco[i].long_arg, 0);
3261

    
3262
                remove_short_at_index(h, j);
3263
                h->long_ref[ mmco[i].long_arg ]= pic;
3264
                if (h->long_ref[ mmco[i].long_arg ]){
3265
                    h->long_ref[ mmco[i].long_arg ]->long_ref=1;
3266
                    h->long_ref_count++;
3267
                }
3268
            break;
3269
        case MMCO_LONG2UNUSED:
3270
            j = pic_num_extract(h, mmco[i].long_arg, &structure);
3271
            pic = h->long_ref[j];
3272
            if (pic) {
3273
                remove_long(h, j, structure ^ PICT_FRAME);
3274
            } else if(s->avctx->debug&FF_DEBUG_MMCO)
3275
                av_log(h->s.avctx, AV_LOG_DEBUG, "mmco: unref long failure\n");
3276
            break;
3277
        case MMCO_LONG:
3278
                    // Comment below left from previous code as it is an interresting note.
3279
                    /* First field in pair is in short term list or
3280
                     * at a different long term index.
3281
                     * This is not allowed; see 7.4.3.3, notes 2 and 3.
3282
                     * Report the problem and keep the pair where it is,
3283
                     * and mark this field valid.
3284
                     */
3285

    
3286
            if (h->long_ref[mmco[i].long_arg] != s->current_picture_ptr) {
3287
                remove_long(h, mmco[i].long_arg, 0);
3288

    
3289
                h->long_ref[ mmco[i].long_arg ]= s->current_picture_ptr;
3290
                h->long_ref[ mmco[i].long_arg ]->long_ref=1;
3291
                h->long_ref_count++;
3292
            }
3293

    
3294
            s->current_picture_ptr->reference |= s->picture_structure;
3295
            current_ref_assigned=1;
3296
            break;
3297
        case MMCO_SET_MAX_LONG:
3298
            assert(mmco[i].long_arg <= 16);
3299
            // just remove the long term which index is greater than new max
3300
            for(j = mmco[i].long_arg; j<16; j++){
3301
                remove_long(h, j, 0);
3302
            }
3303
            break;
3304
        case MMCO_RESET:
3305
            while(h->short_ref_count){
3306
                remove_short(h, h->short_ref[0]->frame_num, 0);
3307
            }
3308
            for(j = 0; j < 16; j++) {
3309
                remove_long(h, j, 0);
3310
            }
3311
            s->current_picture_ptr->poc=
3312
            s->current_picture_ptr->field_poc[0]=
3313
            s->current_picture_ptr->field_poc[1]=
3314
            h->poc_lsb=
3315
            h->poc_msb=
3316
            h->frame_num=
3317
            s->current_picture_ptr->frame_num= 0;
3318
            break;
3319
        default: assert(0);
3320
        }
3321
    }
3322

    
3323
    if (!current_ref_assigned) {
3324
        /* Second field of complementary field pair; the first field of
3325
         * which is already referenced. If short referenced, it
3326
         * should be first entry in short_ref. If not, it must exist
3327
         * in long_ref; trying to put it on the short list here is an
3328
         * error in the encoded bit stream (ref: 7.4.3.3, NOTE 2 and 3).
3329
         */
3330
        if (h->short_ref_count && h->short_ref[0] == s->current_picture_ptr) {
3331
            /* Just mark the second field valid */
3332
            s->current_picture_ptr->reference = PICT_FRAME;
3333
        } else if (s->current_picture_ptr->long_ref) {
3334
            av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term reference "
3335
                                             "assignment for second field "
3336
                                             "in complementary field pair "
3337
                                             "(first field is long term)\n");
3338
        } else {
3339
            pic= remove_short(h, s->current_picture_ptr->frame_num, 0);
3340
            if(pic){
3341
                av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term buffer state detected\n");
3342
            }
3343

    
3344
            if(h->short_ref_count)
3345
                memmove(&h->short_ref[1], &h->short_ref[0], h->short_ref_count*sizeof(Picture*));
3346

    
3347
            h->short_ref[0]= s->current_picture_ptr;
3348
            h->short_ref_count++;
3349
            s->current_picture_ptr->reference |= s->picture_structure;
3350
        }
3351
    }
3352

    
3353
    if (h->long_ref_count + h->short_ref_count > h->sps.ref_frame_count){
3354

    
3355
        /* We have too many reference frames, probably due to corrupted
3356
         * stream. Need to discard one frame. Prevents overrun of the
3357
         * short_ref and long_ref buffers.
3358
         */
3359
        av_log(h->s.avctx, AV_LOG_ERROR,
3360
               "number of reference frames exceeds max (probably "
3361
               "corrupt input), discarding one\n");
3362

    
3363
        if (h->long_ref_count && !h->short_ref_count) {
3364
            for (i = 0; i < 16; ++i)
3365
                if (h->long_ref[i])
3366
                    break;
3367

    
3368
            assert(i < 16);
3369
            remove_long(h, i, 0);
3370
        } else {
3371
            pic = h->short_ref[h->short_ref_count - 1];
3372
            remove_short(h, pic->frame_num, 0);
3373
        }
3374
    }
3375

    
3376
    print_short_term(h);
3377
    print_long_term(h);
3378
    return 0;
3379
}
3380

    
3381
static int decode_ref_pic_marking(H264Context *h, GetBitContext *gb){
3382
    MpegEncContext * const s = &h->s;
3383
    int i;
3384

    
3385
    h->mmco_index= 0;
3386
    if(h->nal_unit_type == NAL_IDR_SLICE){ //FIXME fields
3387
        s->broken_link= get_bits1(gb) -1;
3388
        if(get_bits1(gb)){
3389
            h->mmco[0].opcode= MMCO_LONG;
3390
            h->mmco[0].long_arg= 0;
3391
            h->mmco_index= 1;
3392
        }
3393
    }else{
3394
        if(get_bits1(gb)){ // adaptive_ref_pic_marking_mode_flag
3395
            for(i= 0; i<MAX_MMCO_COUNT; i++) {
3396
                MMCOOpcode opcode= get_ue_golomb(gb);
3397

    
3398
                h->mmco[i].opcode= opcode;
3399
                if(opcode==MMCO_SHORT2UNUSED || opcode==MMCO_SHORT2LONG){
3400
                    h->mmco[i].short_pic_num= (h->curr_pic_num - get_ue_golomb(gb) - 1) & (h->max_pic_num - 1);
3401
/*                    if(h->mmco[i].short_pic_num >= h->short_ref_count || h->short_ref[ h->mmco[i].short_pic_num ] == NULL){
3402
                        av_log(s->avctx, AV_LOG_ERROR, "illegal short ref in memory management control operation %d\n", mmco);
3403
                        return -1;
3404
                    }*/
3405
                }
3406
                if(opcode==MMCO_SHORT2LONG || opcode==MMCO_LONG2UNUSED || opcode==MMCO_LONG || opcode==MMCO_SET_MAX_LONG){
3407
                    unsigned int long_arg= get_ue_golomb(gb);
3408
                    if(long_arg >= 32 || (long_arg >= 16 && !(opcode == MMCO_LONG2UNUSED && FIELD_PICTURE))){
3409
                        av_log(h->s.avctx, AV_LOG_ERROR, "illegal long ref in memory management control operation %d\n", opcode);
3410
                        return -1;
3411
                    }
3412
                    h->mmco[i].long_arg= long_arg;
3413
                }
3414

    
3415
                if(opcode > (unsigned)MMCO_LONG){
3416
                    av_log(h->s.avctx, AV_LOG_ERROR, "illegal memory management control operation %d\n", opcode);
3417
                    return -1;
3418
                }
3419
                if(opcode == MMCO_END)
3420
                    break;
3421
            }
3422
            h->mmco_index= i;
3423
        }else{
3424
            assert(h->long_ref_count + h->short_ref_count <= h->sps.ref_frame_count);
3425

    
3426
            if(h->short_ref_count && h->long_ref_count + h->short_ref_count == h->sps.ref_frame_count &&
3427
                    !(FIELD_PICTURE && !s->first_field && s->current_picture_ptr->reference)) {
3428
                h->mmco[0].opcode= MMCO_SHORT2UNUSED;
3429
                h->mmco[0].short_pic_num= h->short_ref[ h->short_ref_count - 1 ]->frame_num;
3430
                h->mmco_index= 1;
3431
                if (FIELD_PICTURE) {
3432
                    h->mmco[0].short_pic_num *= 2;
3433
                    h->mmco[1].opcode= MMCO_SHORT2UNUSED;
3434
                    h->mmco[1].short_pic_num= h->mmco[0].short_pic_num + 1;
3435
                    h->mmco_index= 2;
3436
                }
3437
            }
3438
        }
3439
    }
3440

    
3441
    return 0;
3442
}
3443

    
3444
static int init_poc(H264Context *h){
3445
    MpegEncContext * const s = &h->s;
3446
    const int max_frame_num= 1<<h->sps.log2_max_frame_num;
3447
    int field_poc[2];
3448
    Picture *cur = s->current_picture_ptr;
3449

    
3450
    h->frame_num_offset= h->prev_frame_num_offset;
3451
    if(h->frame_num < h->prev_frame_num)
3452
        h->frame_num_offset += max_frame_num;
3453

    
3454
    if(h->sps.poc_type==0){
3455
        const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
3456

    
3457
        if     (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
3458
            h->poc_msb = h->prev_poc_msb + max_poc_lsb;
3459
        else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
3460
            h->poc_msb = h->prev_poc_msb - max_poc_lsb;
3461
        else
3462
            h->poc_msb = h->prev_poc_msb;
3463
//printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
3464
        field_poc[0] =
3465
        field_poc[1] = h->poc_msb + h->poc_lsb;
3466
        if(s->picture_structure == PICT_FRAME)
3467
            field_poc[1] += h->delta_poc_bottom;
3468
    }else if(h->sps.poc_type==1){
3469
        int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
3470
        int i;
3471

    
3472
        if(h->sps.poc_cycle_length != 0)
3473
            abs_frame_num = h->frame_num_offset + h->frame_num;
3474
        else
3475
            abs_frame_num = 0;
3476

    
3477
        if(h->nal_ref_idc==0 && abs_frame_num > 0)
3478
            abs_frame_num--;
3479

    
3480
        expected_delta_per_poc_cycle = 0;
3481
        for(i=0; i < h->sps.poc_cycle_length; i++)
3482
            expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
3483

    
3484
        if(abs_frame_num > 0){
3485
            int poc_cycle_cnt          = (abs_frame_num - 1) / h->sps.poc_cycle_length;
3486
            int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
3487

    
3488
            expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
3489
            for(i = 0; i <= frame_num_in_poc_cycle; i++)
3490
                expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
3491
        } else
3492
            expectedpoc = 0;
3493

    
3494
        if(h->nal_ref_idc == 0)
3495
            expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
3496

    
3497
        field_poc[0] = expectedpoc + h->delta_poc[0];
3498
        field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
3499

    
3500
        if(s->picture_structure == PICT_FRAME)
3501
            field_poc[1] += h->delta_poc[1];
3502
    }else{
3503
        int poc= 2*(h->frame_num_offset + h->frame_num);
3504

    
3505
        if(!h->nal_ref_idc)
3506
            poc--;
3507

    
3508
        field_poc[0]= poc;
3509
        field_poc[1]= poc;
3510
    }
3511

    
3512
    if(s->picture_structure != PICT_BOTTOM_FIELD)
3513
        s->current_picture_ptr->field_poc[0]= field_poc[0];
3514
    if(s->picture_structure != PICT_TOP_FIELD)
3515
        s->current_picture_ptr->field_poc[1]= field_poc[1];
3516
    cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
3517

    
3518
    return 0;
3519
}
3520

    
3521

    
3522
/**
3523
 * initialize scan tables
3524
 */
3525
static void init_scan_tables(H264Context *h){
3526
    MpegEncContext * const s = &h->s;
3527
    int i;
3528
    if(s->dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
3529
        memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
3530
        memcpy(h-> field_scan,  field_scan, 16*sizeof(uint8_t));
3531
    }else{
3532
        for(i=0; i<16; i++){
3533
#define T(x) (x>>2) | ((x<<2) & 0xF)
3534
            h->zigzag_scan[i] = T(zigzag_scan[i]);
3535
            h-> field_scan[i] = T( field_scan[i]);
3536
#undef T
3537
        }
3538
    }
3539
    if(s->dsp.h264_idct8_add == ff_h264_idct8_add_c){
3540
        memcpy(h->zigzag_scan8x8,       zigzag_scan8x8,       64*sizeof(uint8_t));
3541
        memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
3542
        memcpy(h->field_scan8x8,        field_scan8x8,        64*sizeof(uint8_t));
3543
        memcpy(h->field_scan8x8_cavlc,  field_scan8x8_cavlc,  64*sizeof(uint8_t));
3544
    }else{
3545
        for(i=0; i<64; i++){
3546
#define T(x) (x>>3) | ((x&7)<<3)
3547
            h->zigzag_scan8x8[i]       = T(zigzag_scan8x8[i]);
3548
            h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
3549
            h->field_scan8x8[i]        = T(field_scan8x8[i]);
3550
            h->field_scan8x8_cavlc[i]  = T(field_scan8x8_cavlc[i]);
3551
#undef T
3552
        }
3553
    }
3554
    if(h->sps.transform_bypass){ //FIXME same ugly
3555
        h->zigzag_scan_q0          = zigzag_scan;
3556
        h->zigzag_scan8x8_q0       = zigzag_scan8x8;
3557
        h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
3558
        h->field_scan_q0           = field_scan;
3559
        h->field_scan8x8_q0        = field_scan8x8;
3560
        h->field_scan8x8_cavlc_q0  = field_scan8x8_cavlc;
3561
    }else{
3562
        h->zigzag_scan_q0          = h->zigzag_scan;
3563
        h->zigzag_scan8x8_q0       = h->zigzag_scan8x8;
3564
        h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
3565
        h->field_scan_q0           = h->field_scan;
3566
        h->field_scan8x8_q0        = h->field_scan8x8;
3567
        h->field_scan8x8_cavlc_q0  = h->field_scan8x8_cavlc;
3568
    }
3569
}
3570

    
3571
/**
3572
 * Replicates H264 "master" context to thread contexts.
3573
 */
3574
static void clone_slice(H264Context *dst, H264Context *src)
3575
{
3576
    memcpy(dst->block_offset,     src->block_offset, sizeof(dst->block_offset));
3577
    dst->s.current_picture_ptr  = src->s.current_picture_ptr;
3578
    dst->s.current_picture      = src->s.current_picture;
3579
    dst->s.linesize             = src->s.linesize;
3580
    dst->s.uvlinesize           = src->s.uvlinesize;
3581
    dst->s.first_field          = src->s.first_field;
3582

    
3583
    dst->prev_poc_msb           = src->prev_poc_msb;
3584
    dst->prev_poc_lsb           = src->prev_poc_lsb;
3585
    dst->prev_frame_num_offset  = src->prev_frame_num_offset;
3586
    dst->prev_frame_num         = src->prev_frame_num;
3587
    dst->short_ref_count        = src->short_ref_count;
3588

    
3589
    memcpy(dst->short_ref,        src->short_ref,        sizeof(dst->short_ref));
3590
    memcpy(dst->long_ref,         src->long_ref,         sizeof(dst->long_ref));
3591
    memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
3592
    memcpy(dst->ref_list,         src->ref_list,         sizeof(dst->ref_list));
3593

    
3594
    memcpy(dst->dequant4_coeff,   src->dequant4_coeff,   sizeof(src->dequant4_coeff));
3595
    memcpy(dst->dequant8_coeff,   src->dequant8_coeff,   sizeof(src->dequant8_coeff));
3596
}
3597

    
3598
/**
3599
 * decodes a slice header.
3600
 * This will also call MPV_common_init() and frame_start() as needed.
3601
 *
3602
 * @param h h264context
3603
 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
3604
 *
3605
 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
3606
 */
3607
static int decode_slice_header(H264Context *h, H264Context *h0){
3608
    MpegEncContext * const s = &h->s;
3609
    MpegEncContext * const s0 = &h0->s;
3610
    unsigned int first_mb_in_slice;
3611
    unsigned int pps_id;
3612
    int num_ref_idx_active_override_flag;
3613
    static const uint8_t slice_type_map[5]= {FF_P_TYPE, FF_B_TYPE, FF_I_TYPE, FF_SP_TYPE, FF_SI_TYPE};
3614
    unsigned int slice_type, tmp, i, j;
3615
    int default_ref_list_done = 0;
3616
    int last_pic_structure;
3617

    
3618
    s->dropable= h->nal_ref_idc == 0;
3619

    
3620
    if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
3621
        s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
3622
        s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
3623
    }else{
3624
        s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
3625
        s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
3626
    }
3627

    
3628
    first_mb_in_slice= get_ue_golomb(&s->gb);
3629

    
3630
    if((s->flags2 & CODEC_FLAG2_CHUNKS) && first_mb_in_slice == 0){
3631
        h0->current_slice = 0;
3632
        if (!s0->first_field)
3633
            s->current_picture_ptr= NULL;
3634
    }
3635

    
3636
    slice_type= get_ue_golomb(&s->gb);
3637
    if(slice_type > 9){
3638
        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);
3639
        return -1;
3640
    }
3641
    if(slice_type > 4){
3642
        slice_type -= 5;
3643
        h->slice_type_fixed=1;
3644
    }else
3645
        h->slice_type_fixed=0;
3646

    
3647
    slice_type= slice_type_map[ slice_type ];
3648
    if (slice_type == FF_I_TYPE
3649
        || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
3650
        default_ref_list_done = 1;
3651
    }
3652
    h->slice_type= slice_type;
3653
    h->slice_type_nos= slice_type & 3;
3654

    
3655
    s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
3656
    if (s->pict_type == FF_B_TYPE && s0->last_picture_ptr == NULL) {
3657
        av_log(h->s.avctx, AV_LOG_ERROR,
3658
               "B picture before any references, skipping\n");
3659
        return -1;
3660
    }
3661

    
3662
    pps_id= get_ue_golomb(&s->gb);
3663
    if(pps_id>=MAX_PPS_COUNT){
3664
        av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
3665
        return -1;
3666
    }
3667
    if(!h0->pps_buffers[pps_id]) {
3668
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS referenced\n");
3669
        return -1;
3670
    }
3671
    h->pps= *h0->pps_buffers[pps_id];
3672

    
3673
    if(!h0->sps_buffers[h->pps.sps_id]) {
3674
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS referenced\n");
3675
        return -1;
3676
    }
3677
    h->sps = *h0->sps_buffers[h->pps.sps_id];
3678

    
3679
    if(h == h0 && h->dequant_coeff_pps != pps_id){
3680
        h->dequant_coeff_pps = pps_id;
3681
        init_dequant_tables(h);
3682
    }
3683

    
3684
    s->mb_width= h->sps.mb_width;
3685
    s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
3686

    
3687
    h->b_stride=  s->mb_width*4;
3688
    h->b8_stride= s->mb_width*2;
3689

    
3690
    s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
3691
    if(h->sps.frame_mbs_only_flag)
3692
        s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
3693
    else
3694
        s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
3695

    
3696
    if (s->context_initialized
3697
        && (   s->width != s->avctx->width || s->height != s->avctx->height)) {
3698
        if(h != h0)
3699
            return -1;   // width / height changed during parallelized decoding
3700
        free_tables(h);
3701
        MPV_common_end(s);
3702
    }
3703
    if (!s->context_initialized) {
3704
        if(h != h0)
3705
            return -1;  // we cant (re-)initialize context during parallel decoding
3706
        if (MPV_common_init(s) < 0)
3707
            return -1;
3708
        s->first_field = 0;
3709

    
3710
        init_scan_tables(h);
3711
        alloc_tables(h);
3712

    
3713
        for(i = 1; i < s->avctx->thread_count; i++) {
3714
            H264Context *c;
3715
            c = h->thread_context[i] = av_malloc(sizeof(H264Context));
3716
            memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
3717
            memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
3718
            c->sps = h->sps;
3719
            c->pps = h->pps;
3720
            init_scan_tables(c);
3721
            clone_tables(c, h);
3722
        }
3723

    
3724
        for(i = 0; i < s->avctx->thread_count; i++)
3725
            if(context_init(h->thread_context[i]) < 0)
3726
                return -1;
3727

    
3728
        s->avctx->width = s->width;
3729
        s->avctx->height = s->height;
3730
        s->avctx->sample_aspect_ratio= h->sps.sar;
3731
        if(!s->avctx->sample_aspect_ratio.den)
3732
            s->avctx->sample_aspect_ratio.den = 1;
3733

    
3734
        if(h->sps.timing_info_present_flag){
3735
            s->avctx->time_base= (AVRational){h->sps.num_units_in_tick * 2, h->sps.time_scale};
3736
            if(h->x264_build > 0 && h->x264_build < 44)
3737
                s->avctx->time_base.den *= 2;
3738
            av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
3739
                      s->avctx->time_base.num, s->avctx->time_base.den, 1<<30);
3740
        }
3741
    }
3742

    
3743
    h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
3744

    
3745
    h->mb_mbaff = 0;
3746
    h->mb_aff_frame = 0;
3747
    last_pic_structure = s0->picture_structure;
3748
    if(h->sps.frame_mbs_only_flag){
3749
        s->picture_structure= PICT_FRAME;
3750
    }else{
3751
        if(get_bits1(&s->gb)) { //field_pic_flag
3752
            s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
3753
        } else {
3754
            s->picture_structure= PICT_FRAME;
3755
            h->mb_aff_frame = h->sps.mb_aff;
3756
        }
3757
    }
3758
    h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
3759

    
3760
    if(h0->current_slice == 0){
3761
        while(h->frame_num !=  h->prev_frame_num &&
3762
              h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
3763
            av_log(NULL, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
3764
            frame_start(h);
3765
            h->prev_frame_num++;
3766
            h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
3767
            s->current_picture_ptr->frame_num= h->prev_frame_num;
3768
            execute_ref_pic_marking(h, NULL, 0);
3769
        }
3770

    
3771
        /* See if we have a decoded first field looking for a pair... */
3772
        if (s0->first_field) {
3773
            assert(s0->current_picture_ptr);
3774
            assert(s0->current_picture_ptr->data[0]);
3775
            assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
3776

    
3777
            /* figure out if we have a complementary field pair */
3778
            if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
3779
                /*
3780
                 * Previous field is unmatched. Don't display it, but let it
3781
                 * remain for reference if marked as such.
3782
                 */
3783
                s0->current_picture_ptr = NULL;
3784
                s0->first_field = FIELD_PICTURE;
3785

    
3786
            } else {
3787
                if (h->nal_ref_idc &&
3788
                        s0->current_picture_ptr->reference &&
3789
                        s0->current_picture_ptr->frame_num != h->frame_num) {
3790
                    /*
3791
                     * This and previous field were reference, but had
3792
                     * different frame_nums. Consider this field first in
3793
                     * pair. Throw away previous field except for reference
3794
                     * purposes.
3795
                     */
3796
                    s0->first_field = 1;
3797
                    s0->current_picture_ptr = NULL;
3798

    
3799
                } else {
3800
                    /* Second field in complementary pair */
3801
                    s0->first_field = 0;
3802
                }
3803
            }
3804

    
3805
        } else {
3806
            /* Frame or first field in a potentially complementary pair */
3807
            assert(!s0->current_picture_ptr);
3808
            s0->first_field = FIELD_PICTURE;
3809
        }
3810

    
3811
        if((!FIELD_PICTURE || s0->first_field) && frame_start(h) < 0) {
3812
            s0->first_field = 0;
3813
            return -1;
3814
        }
3815
    }
3816
    if(h != h0)
3817
        clone_slice(h, h0);
3818

    
3819
    s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
3820

    
3821
    assert(s->mb_num == s->mb_width * s->mb_height);
3822
    if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
3823
       first_mb_in_slice                    >= s->mb_num){
3824
        av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
3825
        return -1;
3826
    }
3827
    s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
3828
    s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
3829
    if (s->picture_structure == PICT_BOTTOM_FIELD)
3830
        s->resync_mb_y = s->mb_y = s->mb_y + 1;
3831
    assert(s->mb_y < s->mb_height);
3832

    
3833
    if(s->picture_structure==PICT_FRAME){
3834
        h->curr_pic_num=   h->frame_num;
3835
        h->max_pic_num= 1<< h->sps.log2_max_frame_num;
3836
    }else{
3837
        h->curr_pic_num= 2*h->frame_num + 1;
3838
        h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
3839
    }
3840

    
3841
    if(h->nal_unit_type == NAL_IDR_SLICE){
3842
        get_ue_golomb(&s->gb); /* idr_pic_id */
3843
    }
3844

    
3845
    if(h->sps.poc_type==0){
3846
        h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
3847

    
3848
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
3849
            h->delta_poc_bottom= get_se_golomb(&s->gb);
3850
        }
3851
    }
3852

    
3853
    if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
3854
        h->delta_poc[0]= get_se_golomb(&s->gb);
3855

    
3856
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
3857
            h->delta_poc[1]= get_se_golomb(&s->gb);
3858
    }
3859

    
3860
    init_poc(h);
3861

    
3862
    if(h->pps.redundant_pic_cnt_present){
3863
        h->redundant_pic_count= get_ue_golomb(&s->gb);
3864
    }
3865

    
3866
    //set defaults, might be overridden a few lines later
3867
    h->ref_count[0]= h->pps.ref_count[0];
3868
    h->ref_count[1]= h->pps.ref_count[1];
3869

    
3870
    if(h->slice_type_nos != FF_I_TYPE){
3871
        if(h->slice_type_nos == FF_B_TYPE){
3872
            h->direct_spatial_mv_pred= get_bits1(&s->gb);
3873
        }
3874
        num_ref_idx_active_override_flag= get_bits1(&s->gb);
3875

    
3876
        if(num_ref_idx_active_override_flag){
3877
            h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
3878
            if(h->slice_type_nos==FF_B_TYPE)
3879
                h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
3880

    
3881
            if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
3882
                av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
3883
                h->ref_count[0]= h->ref_count[1]= 1;
3884
                return -1;
3885
            }
3886
        }
3887
        if(h->slice_type_nos == FF_B_TYPE)
3888
            h->list_count= 2;
3889
        else
3890
            h->list_count= 1;
3891
    }else
3892
        h->list_count= 0;
3893

    
3894
    if(!default_ref_list_done){
3895
        fill_default_ref_list(h);
3896
    }
3897

    
3898
    if(h->slice_type_nos!=FF_I_TYPE && decode_ref_pic_list_reordering(h) < 0)
3899
        return -1;
3900

    
3901
    if(   (h->pps.weighted_pred          && h->slice_type_nos == FF_P_TYPE )
3902
       ||  (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
3903
        pred_weight_table(h);
3904
    else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE)
3905
        implicit_weight_table(h);
3906
    else
3907
        h->use_weight = 0;
3908

    
3909
    if(h->nal_ref_idc)
3910
        decode_ref_pic_marking(h0, &s->gb);
3911

    
3912
    if(FRAME_MBAFF)
3913
        fill_mbaff_ref_list(h);
3914

    
3915
    if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
3916
        tmp = get_ue_golomb(&s->gb);
3917
        if(tmp > 2){
3918
            av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
3919
            return -1;
3920
        }
3921
        h->cabac_init_idc= tmp;
3922
    }
3923

    
3924
    h->last_qscale_diff = 0;
3925
    tmp = h->pps.init_qp + get_se_golomb(&s->gb);
3926
    if(tmp>51){
3927
        av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
3928
        return -1;
3929
    }
3930
    s->qscale= tmp;
3931
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
3932
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
3933
    //FIXME qscale / qp ... stuff
3934
    if(h->slice_type == FF_SP_TYPE){
3935
        get_bits1(&s->gb); /* sp_for_switch_flag */
3936
    }
3937
    if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
3938
        get_se_golomb(&s->gb); /* slice_qs_delta */
3939
    }
3940

    
3941
    h->deblocking_filter = 1;
3942
    h->slice_alpha_c0_offset = 0;
3943
    h->slice_beta_offset = 0;
3944
    if( h->pps.deblocking_filter_parameters_present ) {
3945
        tmp= get_ue_golomb(&s->gb);
3946
        if(tmp > 2){
3947
            av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
3948
            return -1;
3949
        }
3950
        h->deblocking_filter= tmp;
3951
        if(h->deblocking_filter < 2)
3952
            h->deblocking_filter^= 1; // 1<->0
3953

    
3954
        if( h->deblocking_filter ) {
3955
            h->slice_alpha_c0_offset = get_se_golomb(&s->gb) << 1;
3956
            h->slice_beta_offset = get_se_golomb(&s->gb) << 1;
3957
        }
3958
    }
3959

    
3960
    if(   s->avctx->skip_loop_filter >= AVDISCARD_ALL
3961
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
3962
       ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR  && h->slice_type_nos == FF_B_TYPE)
3963
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
3964
        h->deblocking_filter= 0;
3965

    
3966
    if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
3967
        if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
3968
            /* Cheat slightly for speed:
3969
               Do not bother to deblock across slices. */
3970
            h->deblocking_filter = 2;
3971
        } else {
3972
            h0->max_contexts = 1;
3973
            if(!h0->single_decode_warning) {
3974
                av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
3975
                h0->single_decode_warning = 1;
3976
            }
3977
            if(h != h0)
3978
                return 1; // deblocking switched inside frame
3979
        }
3980
    }
3981

    
3982
#if 0 //FMO
3983
    if( h->pps.num_slice_groups > 1  && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
3984
        slice_group_change_cycle= get_bits(&s->gb, ?);
3985
#endif
3986

    
3987
    h0->last_slice_type = slice_type;
3988
    h->slice_num = ++h0->current_slice;
3989

    
3990
    for(j=0; j<2; j++){
3991
        int *ref2frm= h->ref2frm[h->slice_num&15][j];
3992
        ref2frm[0]=
3993
        ref2frm[1]= -1;
3994
        for(i=0; i<16; i++)
3995
            ref2frm[i+2]= 4*h->ref_list[j][i].frame_num
3996
                          +(h->ref_list[j][i].reference&3);
3997
        ref2frm[18+0]=
3998
        ref2frm[18+1]= -1;
3999
        for(i=16; i<48; i++)
4000
            ref2frm[i+4]= 4*h->ref_list[j][i].frame_num
4001
                          +(h->ref_list[j][i].reference&3);
4002
    }
4003

    
4004
    h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
4005
    h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
4006

    
4007
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
4008
        av_log(h->s.avctx, AV_LOG_DEBUG, "slice:%d %s mb:%d %c pps:%u frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d:%d:%d weight:%d%s %s\n",
4009
               h->slice_num,
4010
               (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
4011
               first_mb_in_slice,
4012
               av_get_pict_type_char(h->slice_type),
4013
               pps_id, h->frame_num,
4014
               s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
4015
               h->ref_count[0], h->ref_count[1],
4016
               s->qscale,
4017
               h->deblocking_filter, h->slice_alpha_c0_offset/2, h->slice_beta_offset/2,
4018
               h->use_weight,
4019
               h->use_weight==1 && h->use_weight_chroma ? "c" : "",
4020
               h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
4021
               );
4022
    }
4023

    
4024
    return 0;
4025
}
4026

    
4027
/**
4028
 *
4029
 */
4030
static inline int get_level_prefix(GetBitContext *gb){
4031
    unsigned int buf;
4032
    int log;
4033

    
4034
    OPEN_READER(re, gb);
4035
    UPDATE_CACHE(re, gb);
4036
    buf=GET_CACHE(re, gb);
4037

    
4038
    log= 32 - av_log2(buf);
4039
#ifdef TRACE
4040
    print_bin(buf>>(32-log), log);
4041
    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__);
4042
#endif
4043

    
4044
    LAST_SKIP_BITS(re, gb, log);
4045
    CLOSE_READER(re, gb);
4046

    
4047
    return log-1;
4048
}
4049

    
4050
static inline int get_dct8x8_allowed(H264Context *h){
4051
    int i;
4052
    for(i=0; i<4; i++){
4053
        if(!IS_SUB_8X8(h->sub_mb_type[i])
4054
           || (!h->sps.direct_8x8_inference_flag && IS_DIRECT(h->sub_mb_type[i])))
4055
            return 0;
4056
    }
4057
    return 1;
4058
}
4059

    
4060
/**
4061
 * decodes a residual block.
4062
 * @param n block index
4063
 * @param scantable scantable
4064
 * @param max_coeff number of coefficients in the block
4065
 * @return <0 if an error occurred
4066
 */
4067
static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff){
4068
    MpegEncContext * const s = &h->s;
4069
    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};
4070
    int level[16];
4071
    int zeros_left, coeff_num, coeff_token, total_coeff, i, j, trailing_ones, run_before;
4072

    
4073
    //FIXME put trailing_onex into the context
4074

    
4075
    if(n == CHROMA_DC_BLOCK_INDEX){
4076
        coeff_token= get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1);
4077
        total_coeff= coeff_token>>2;
4078
    }else{
4079
        if(n == LUMA_DC_BLOCK_INDEX){
4080
            total_coeff= pred_non_zero_count(h, 0);
4081
            coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
4082
            total_coeff= coeff_token>>2;
4083
        }else{
4084
            total_coeff= pred_non_zero_count(h, n);
4085
            coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
4086
            total_coeff= coeff_token>>2;
4087
            h->non_zero_count_cache[ scan8[n] ]= total_coeff;
4088
        }
4089
    }
4090

    
4091
    //FIXME set last_non_zero?
4092

    
4093
    if(total_coeff==0)
4094
        return 0;
4095
    if(total_coeff > (unsigned)max_coeff) {
4096
        av_log(h->s.avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", s->mb_x, s->mb_y, total_coeff);
4097
        return -1;
4098
    }
4099

    
4100
    trailing_ones= coeff_token&3;
4101
    tprintf(h->s.avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff);
4102
    assert(total_coeff<=16);
4103

    
4104
    for(i=0; i<trailing_ones; i++){
4105
        level[i]= 1 - 2*get_bits1(gb);
4106
    }
4107

    
4108
    if(i<total_coeff) {
4109
        int level_code, mask;
4110
        int suffix_length = total_coeff > 10 && trailing_ones < 3;
4111
        int prefix= get_level_prefix(gb);
4112

    
4113
        //first coefficient has suffix_length equal to 0 or 1
4114
        if(prefix<14){ //FIXME try to build a large unified VLC table for all this
4115
            if(suffix_length)
4116
                level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
4117
            else
4118
                level_code= (prefix<<suffix_length); //part
4119
        }else if(prefix==14){
4120
            if(suffix_length)
4121
                level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
4122
            else
4123
                level_code= prefix + get_bits(gb, 4); //part
4124
        }else{
4125
            level_code= (15<<suffix_length) + get_bits(gb, prefix-3); //part
4126
            if(suffix_length==0) level_code+=15; //FIXME doesn't make (much)sense
4127
            if(prefix>=16)
4128
                level_code += (1<<(prefix-3))-4096;
4129
        }
4130

    
4131
        if(trailing_ones < 3) level_code += 2;
4132

    
4133
        suffix_length = 1;
4134
        if(level_code > 5)
4135
            suffix_length++;
4136
        mask= -(level_code&1);
4137
        level[i]= (((2+level_code)>>1) ^ mask) - mask;
4138
        i++;
4139

    
4140
        //remaining coefficients have suffix_length > 0
4141
        for(;i<total_coeff;i++) {
4142
            static const int suffix_limit[7] = {0,5,11,23,47,95,INT_MAX };
4143
            prefix = get_level_prefix(gb);
4144
            if(prefix<15){
4145
                level_code = (prefix<<suffix_length) + get_bits(gb, suffix_length);
4146
            }else{
4147
                level_code = (15<<suffix_length) + get_bits(gb, prefix-3);
4148
                if(prefix>=16)
4149
                    level_code += (1<<(prefix-3))-4096;
4150
            }
4151
            mask= -(level_code&1);
4152
            level[i]= (((2+level_code)>>1) ^ mask) - mask;
4153
            if(level_code > suffix_limit[suffix_length])
4154
                suffix_length++;
4155
        }
4156
    }
4157

    
4158
    if(total_coeff == max_coeff)
4159
        zeros_left=0;
4160
    else{
4161
        if(n == CHROMA_DC_BLOCK_INDEX)
4162
            zeros_left= get_vlc2(gb, chroma_dc_total_zeros_vlc[ total_coeff-1 ].table, CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1);
4163
        else
4164
            zeros_left= get_vlc2(gb, total_zeros_vlc[ total_coeff-1 ].table, TOTAL_ZEROS_VLC_BITS, 1);
4165
    }
4166

    
4167
    coeff_num = zeros_left + total_coeff - 1;
4168
    j = scantable[coeff_num];
4169
    if(n > 24){
4170
        block[j] = level[0];
4171
        for(i=1;i<total_coeff;i++) {
4172
            if(zeros_left <= 0)
4173
                run_before = 0;
4174
            else if(zeros_left < 7){
4175
                run_before= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
4176
            }else{
4177
                run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
4178
            }
4179
            zeros_left -= run_before;
4180
            coeff_num -= 1 + run_before;
4181
            j= scantable[ coeff_num ];
4182

    
4183
            block[j]= level[i];
4184
        }
4185
    }else{
4186
        block[j] = (level[0] * qmul[j] + 32)>>6;
4187
        for(i=1;i<total_coeff;i++) {
4188
            if(zeros_left <= 0)
4189
                run_before = 0;
4190
            else if(zeros_left < 7){
4191
                run_before= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
4192
            }else{
4193
                run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
4194
            }
4195
            zeros_left -= run_before;
4196
            coeff_num -= 1 + run_before;
4197
            j= scantable[ coeff_num ];
4198

    
4199
            block[j]= (level[i] * qmul[j] + 32)>>6;
4200
        }
4201
    }
4202

    
4203
    if(zeros_left<0){
4204
        av_log(h->s.avctx, AV_LOG_ERROR, "negative number of zero coeffs at %d %d\n", s->mb_x, s->mb_y);
4205
        return -1;
4206
    }
4207

    
4208
    return 0;
4209
}
4210

    
4211
static void predict_field_decoding_flag(H264Context *h){
4212
    MpegEncContext * const s = &h->s;
4213
    const int mb_xy= h->mb_xy;
4214
    int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
4215
                ? s->current_picture.mb_type[mb_xy-1]
4216
                : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
4217
                ? s->current_picture.mb_type[mb_xy-s->mb_stride]
4218
                : 0;
4219
    h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
4220
}
4221

    
4222
/**
4223
 * decodes a P_SKIP or B_SKIP macroblock
4224
 */
4225
static void decode_mb_skip(H264Context *h){
4226
    MpegEncContext * const s = &h->s;
4227
    const int mb_xy= h->mb_xy;
4228
    int mb_type=0;
4229

    
4230
    memset(h->non_zero_count[mb_xy], 0, 16);
4231
    memset(h->non_zero_count_cache + 8, 0, 8*5); //FIXME ugly, remove pfui
4232

    
4233
    if(MB_FIELD)
4234
        mb_type|= MB_TYPE_INTERLACED;
4235

    
4236
    if( h->slice_type_nos == FF_B_TYPE )
4237
    {
4238
        // just for fill_caches. pred_direct_motion will set the real mb_type
4239
        mb_type|= MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2|MB_TYPE_SKIP;
4240

    
4241
        fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ...
4242
        pred_direct_motion(h, &mb_type);
4243
        mb_type|= MB_TYPE_SKIP;
4244
    }
4245
    else
4246
    {
4247
        int mx, my;
4248
        mb_type|= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P1L0|MB_TYPE_SKIP;
4249

    
4250
        fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ...
4251
        pred_pskip_motion(h, &mx, &my);
4252
        fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);
4253
        fill_rectangle(  h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mx,my), 4);
4254
    }
4255

    
4256
    write_back_motion(h, mb_type);
4257
    s->current_picture.mb_type[mb_xy]= mb_type;
4258
    s->current_picture.qscale_table[mb_xy]= s->qscale;
4259
    h->slice_table[ mb_xy ]= h->slice_num;
4260
    h->prev_mb_skipped= 1;
4261
}
4262

    
4263
/**
4264
 * decodes a macroblock
4265
 * @returns 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
4266
 */
4267
static int decode_mb_cavlc(H264Context *h){
4268
    MpegEncContext * const s = &h->s;
4269
    int mb_xy;
4270
    int partition_count;
4271
    unsigned int mb_type, cbp;
4272
    int dct8x8_allowed= h->pps.transform_8x8_mode;
4273

    
4274
    mb_xy = h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;
4275

    
4276
    s->dsp.clear_blocks(h->mb); //FIXME avoid if already clear (move after skip handlong?
4277

    
4278
    tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
4279
    cbp = 0; /* avoid warning. FIXME: find a solution without slowing
4280
                down the code */
4281
    if(h->slice_type_nos != FF_I_TYPE){
4282
        if(s->mb_skip_run==-1)
4283
            s->mb_skip_run= get_ue_golomb(&s->gb);
4284

    
4285
        if (s->mb_skip_run--) {
4286
            if(FRAME_MBAFF && (s->mb_y&1) == 0){
4287
                if(s->mb_skip_run==0)
4288
                    h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb);
4289
                else
4290
                    predict_field_decoding_flag(h);
4291
            }
4292
            decode_mb_skip(h);
4293
            return 0;
4294
        }
4295
    }
4296
    if(FRAME_MBAFF){
4297
        if( (s->mb_y&1) == 0 )
4298
            h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb);
4299
    }
4300

    
4301
    h->prev_mb_skipped= 0;
4302

    
4303
    mb_type= get_ue_golomb(&s->gb);
4304
    if(h->slice_type_nos == FF_B_TYPE){
4305
        if(mb_type < 23){
4306
            partition_count= b_mb_type_info[mb_type].partition_count;
4307
            mb_type=         b_mb_type_info[mb_type].type;
4308
        }else{
4309
            mb_type -= 23;
4310
            goto decode_intra_mb;
4311
        }
4312
    }else if(h->slice_type_nos == FF_P_TYPE){
4313
        if(mb_type < 5){
4314
            partition_count= p_mb_type_info[mb_type].partition_count;
4315
            mb_type=         p_mb_type_info[mb_type].type;
4316
        }else{
4317
            mb_type -= 5;
4318
            goto decode_intra_mb;
4319
        }
4320
    }else{
4321
       assert(h->slice_type_nos == FF_I_TYPE);
4322
        if(h->slice_type == FF_SI_TYPE && mb_type)
4323
            mb_type--;
4324
decode_intra_mb:
4325
        if(mb_type > 25){
4326
            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);
4327
            return -1;
4328
        }
4329
        partition_count=0;
4330
        cbp= i_mb_type_info[mb_type].cbp;
4331
        h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode;
4332
        mb_type= i_mb_type_info[mb_type].type;
4333
    }
4334

    
4335
    if(MB_FIELD)
4336
        mb_type |= MB_TYPE_INTERLACED;
4337

    
4338
    h->slice_table[ mb_xy ]= h->slice_num;
4339

    
4340
    if(IS_INTRA_PCM(mb_type)){
4341
        unsigned int x;
4342

    
4343
        // We assume these blocks are very rare so we do not optimize it.
4344
        align_get_bits(&s->gb);
4345

    
4346
        // The pixels are stored in the same order as levels in h->mb array.
4347
        for(x=0; x < (CHROMA ? 384 : 256); x++){
4348
            ((uint8_t*)h->mb)[x]= get_bits(&s->gb, 8);
4349
        }
4350

    
4351
        // In deblocking, the quantizer is 0
4352
        s->current_picture.qscale_table[mb_xy]= 0;
4353
        // All coeffs are present
4354
        memset(h->non_zero_count[mb_xy], 16, 16);
4355

    
4356
        s->current_picture.mb_type[mb_xy]= mb_type;
4357
        return 0;
4358
    }
4359

    
4360
    if(MB_MBAFF){
4361
        h->ref_count[0] <<= 1;
4362
        h->ref_count[1] <<= 1;
4363
    }
4364

    
4365
    fill_caches(h, mb_type, 0);
4366

    
4367
    //mb_pred
4368
    if(IS_INTRA(mb_type)){
4369
        int pred_mode;
4370
//            init_top_left_availability(h);
4371
        if(IS_INTRA4x4(mb_type)){
4372
            int i;
4373
            int di = 1;
4374
            if(dct8x8_allowed && get_bits1(&s->gb)){
4375
                mb_type |= MB_TYPE_8x8DCT;
4376
                di = 4;
4377
            }
4378

    
4379
//                fill_intra4x4_pred_table(h);
4380
            for(i=0; i<16; i+=di){
4381
                int mode= pred_intra_mode(h, i);
4382

    
4383
                if(!get_bits1(&s->gb)){
4384
                    const int rem_mode= get_bits(&s->gb, 3);
4385
                    mode = rem_mode + (rem_mode >= mode);
4386
                }
4387

    
4388
                if(di==4)
4389
                    fill_rectangle( &h->intra4x4_pred_mode_cache[ scan8[i] ], 2, 2, 8, mode, 1 );
4390
                else
4391
                    h->intra4x4_pred_mode_cache[ scan8[i] ] = mode;
4392
            }
4393
            write_back_intra_pred_mode(h);
4394
            if( check_intra4x4_pred_mode(h) < 0)
4395
                return -1;
4396
        }else{
4397
            h->intra16x16_pred_mode= check_intra_pred_mode(h, h->intra16x16_pred_mode);
4398
            if(h->intra16x16_pred_mode < 0)
4399
                return -1;
4400
        }
4401
        if(CHROMA){
4402
            pred_mode= check_intra_pred_mode(h, get_ue_golomb(&s->gb));
4403
            if(pred_mode < 0)
4404
                return -1;
4405
            h->chroma_pred_mode= pred_mode;
4406
        }
4407
    }else if(partition_count==4){
4408
        int i, j, sub_partition_count[4], list, ref[2][4];
4409

    
4410
        if(h->slice_type_nos == FF_B_TYPE){
4411
            for(i=0; i<4; i++){
4412
                h->sub_mb_type[i]= get_ue_golomb(&s->gb);
4413
                if(h->sub_mb_type[i] >=13){
4414
                    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);
4415
                    return -1;
4416
                }
4417
                sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
4418
                h->sub_mb_type[i]=      b_sub_mb_type_info[ h->sub_mb_type[i] ].type;
4419
            }
4420
            if(   IS_DIRECT(h->sub_mb_type[0]) || IS_DIRECT(h->sub_mb_type[1])
4421
               || IS_DIRECT(h->sub_mb_type[2]) || IS_DIRECT(h->sub_mb_type[3])) {
4422
                pred_direct_motion(h, &mb_type);
4423
                h->ref_cache[0][scan8[4]] =
4424
                h->ref_cache[1][scan8[4]] =
4425
                h->ref_cache[0][scan8[12]] =
4426
                h->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE;
4427
            }
4428
        }else{
4429
            assert(h->slice_type_nos == FF_P_TYPE); //FIXME SP correct ?
4430
            for(i=0; i<4; i++){
4431
                h->sub_mb_type[i]= get_ue_golomb(&s->gb);
4432
                if(h->sub_mb_type[i] >=4){
4433
                    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);
4434
                    return -1;
4435
                }
4436
                sub_partition_count[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
4437
                h->sub_mb_type[i]=      p_sub_mb_type_info[ h->sub_mb_type[i] ].type;
4438
            }
4439
        }
4440

    
4441
        for(list=0; list<h->list_count; list++){
4442
            int ref_count= IS_REF0(mb_type) ? 1 : h->ref_count[list];
4443
            for(i=0; i<4; i++){
4444
                if(IS_DIRECT(h->sub_mb_type[i])) continue;
4445
                if(IS_DIR(h->sub_mb_type[i], 0, list)){
4446
                    unsigned int tmp = get_te0_golomb(&s->gb, ref_count); //FIXME init to 0 before and skip?
4447
                    if(tmp>=ref_count){
4448
                        av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", tmp);
4449
                        return -1;
4450
                    }
4451
                    ref[list][i]= tmp;
4452
                }else{
4453
                 //FIXME
4454
                    ref[list][i] = -1;
4455
                }
4456
            }
4457
        }
4458

    
4459
        if(dct8x8_allowed)
4460
            dct8x8_allowed = get_dct8x8_allowed(h);
4461

    
4462
        for(list=0; list<h->list_count; list++){
4463
            for(i=0; i<4; i++){
4464
                if(IS_DIRECT(h->sub_mb_type[i])) {
4465
                    h->ref_cache[list][ scan8[4*i] ] = h->ref_cache[list][ scan8[4*i]+1 ];
4466
                    continue;
4467
                }
4468
                h->ref_cache[list][ scan8[4*i]   ]=h->ref_cache[list][ scan8[4*i]+1 ]=
4469
                h->ref_cache[list][ scan8[4*i]+8 ]=h->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i];
4470

    
4471
                if(IS_DIR(h-