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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 libavcodec/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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 */
27

    
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#include "internal.h"
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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 "mathops.h"
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#include "rectangle.h"
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#include "vdpau_internal.h"
39

    
40
#include "cabac.h"
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#if ARCH_X86
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#include "x86/h264_i386.h"
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#endif
44

    
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//#undef NDEBUG
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#include <assert.h>
47

    
48
/**
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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
53

    
54
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};
57

    
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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;
61

    
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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;
65

    
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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;
69

    
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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;
73

    
74
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;
77

    
78
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);
80
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);
83

    
84
static av_always_inline uint32_t pack16to32(int a, int b){
85
#if HAVE_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
90
}
91

    
92
static const uint8_t rem6[52]={
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0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3,
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};
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static const uint8_t div6[52]={
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0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
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};
99

    
100
static const uint8_t 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}
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};
106

    
107
#define LEVEL_TAB_BITS 8
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static int8_t cavlc_level_tab[7][1<<LEVEL_TAB_BITS][2];
109

    
110
static void fill_caches(H264Context *h, int mb_type, int for_deblock){
111
    MpegEncContext * const s = &h->s;
112
    const int mb_xy= h->mb_xy;
113
    int topleft_xy, top_xy, topright_xy, left_xy[2];
114
    int topleft_type, top_type, topright_type, left_type[2];
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    const uint8_t * left_block;
116
    int topleft_partition= -1;
117
    int i;
118

    
119
    top_xy     = mb_xy  - (s->mb_stride << FIELD_PICTURE);
120

    
121
    //FIXME deblocking could skip the intra and nnz parts.
122
    if(for_deblock && (h->slice_num == 1 || h->slice_table[mb_xy] == h->slice_table[top_xy]) && !FRAME_MBAFF)
123
        return;
124

    
125
    /* Wow, what a mess, why didn't they simplify the interlacing & intra
126
     * stuff, I can't imagine that these complex rules are worth it. */
127

    
128
    topleft_xy = top_xy - 1;
129
    topright_xy= top_xy + 1;
130
    left_xy[1] = left_xy[0] = mb_xy-1;
131
    left_block = left_block_options[0];
132
    if(FRAME_MBAFF){
133
        const int pair_xy          = s->mb_x     + (s->mb_y & ~1)*s->mb_stride;
134
        const int top_pair_xy      = pair_xy     - s->mb_stride;
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        const int topleft_pair_xy  = top_pair_xy - 1;
136
        const int topright_pair_xy = top_pair_xy + 1;
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        const int topleft_mb_field_flag  = IS_INTERLACED(s->current_picture.mb_type[topleft_pair_xy]);
138
        const int top_mb_field_flag      = IS_INTERLACED(s->current_picture.mb_type[top_pair_xy]);
139
        const int topright_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[topright_pair_xy]);
140
        const int left_mb_field_flag     = IS_INTERLACED(s->current_picture.mb_type[pair_xy-1]);
141
        const int curr_mb_field_flag     = IS_INTERLACED(mb_type);
142
        const int bottom = (s->mb_y & 1);
143
        tprintf(s->avctx, "fill_caches: curr_mb_field_flag:%d, left_mb_field_flag:%d, topleft_mb_field_flag:%d, top_mb_field_flag:%d, topright_mb_field_flag:%d\n", curr_mb_field_flag, left_mb_field_flag, topleft_mb_field_flag, top_mb_field_flag, topright_mb_field_flag);
144

    
145
        if (curr_mb_field_flag && (bottom || top_mb_field_flag)){
146
            top_xy -= s->mb_stride;
147
        }
148
        if (curr_mb_field_flag && (bottom || topleft_mb_field_flag)){
149
            topleft_xy -= s->mb_stride;
150
        } else if(bottom && !curr_mb_field_flag && left_mb_field_flag) {
151
            topleft_xy += s->mb_stride;
152
            // take top left mv from the middle of the mb, as opposed to all other modes which use the bottom right partition
153
            topleft_partition = 0;
154
        }
155
        if (curr_mb_field_flag && (bottom || topright_mb_field_flag)){
156
            topright_xy -= s->mb_stride;
157
        }
158
        if (left_mb_field_flag != curr_mb_field_flag) {
159
            left_xy[1] = left_xy[0] = pair_xy - 1;
160
            if (curr_mb_field_flag) {
161
                left_xy[1] += s->mb_stride;
162
                left_block = left_block_options[3];
163
            } else {
164
                left_block= left_block_options[2 - bottom];
165
            }
166
        }
167
    }
168

    
169
    h->top_mb_xy = top_xy;
170
    h->left_mb_xy[0] = left_xy[0];
171
    h->left_mb_xy[1] = left_xy[1];
172
    if(for_deblock){
173
        topleft_type = 0;
174
        topright_type = 0;
175
        top_type     = h->slice_table[top_xy     ] < 0xFFFF ? s->current_picture.mb_type[top_xy]     : 0;
176
        left_type[0] = h->slice_table[left_xy[0] ] < 0xFFFF ? s->current_picture.mb_type[left_xy[0]] : 0;
177
        left_type[1] = h->slice_table[left_xy[1] ] < 0xFFFF ? s->current_picture.mb_type[left_xy[1]] : 0;
178

    
179
        if(MB_MBAFF && !IS_INTRA(mb_type)){
180
            int list;
181
            for(list=0; list<h->list_count; list++){
182
                //These values where changed for ease of performing MC, we need to change them back
183
                //FIXME maybe we can make MC and loop filter use the same values or prevent
184
                //the MC code from changing ref_cache and rather use a temporary array.
185
                if(USES_LIST(mb_type,list)){
186
                    int8_t *ref = &s->current_picture.ref_index[list][h->mb2b8_xy[mb_xy]];
187
                    *(uint32_t*)&h->ref_cache[list][scan8[ 0]] =
188
                    *(uint32_t*)&h->ref_cache[list][scan8[ 2]] = (pack16to32(ref[0],ref[1])&0x00FF00FF)*0x0101;
189
                    ref += h->b8_stride;
190
                    *(uint32_t*)&h->ref_cache[list][scan8[ 8]] =
191
                    *(uint32_t*)&h->ref_cache[list][scan8[10]] = (pack16to32(ref[0],ref[1])&0x00FF00FF)*0x0101;
192
                }
193
            }
194
        }
195
    }else{
196
        topleft_type = h->slice_table[topleft_xy ] == h->slice_num ? s->current_picture.mb_type[topleft_xy] : 0;
197
        top_type     = h->slice_table[top_xy     ] == h->slice_num ? s->current_picture.mb_type[top_xy]     : 0;
198
        topright_type= h->slice_table[topright_xy] == h->slice_num ? s->current_picture.mb_type[topright_xy]: 0;
199
        left_type[0] = h->slice_table[left_xy[0] ] == h->slice_num ? s->current_picture.mb_type[left_xy[0]] : 0;
200
        left_type[1] = h->slice_table[left_xy[1] ] == h->slice_num ? s->current_picture.mb_type[left_xy[1]] : 0;
201

    
202
    if(IS_INTRA(mb_type)){
203
        int type_mask= h->pps.constrained_intra_pred ? IS_INTRA(-1) : -1;
204
        h->topleft_samples_available=
205
        h->top_samples_available=
206
        h->left_samples_available= 0xFFFF;
207
        h->topright_samples_available= 0xEEEA;
208

    
209
        if(!(top_type & type_mask)){
210
            h->topleft_samples_available= 0xB3FF;
211
            h->top_samples_available= 0x33FF;
212
            h->topright_samples_available= 0x26EA;
213
        }
214
        if(IS_INTERLACED(mb_type) != IS_INTERLACED(left_type[0])){
215
            if(IS_INTERLACED(mb_type)){
216
                if(!(left_type[0] & type_mask)){
217
                    h->topleft_samples_available&= 0xDFFF;
218
                    h->left_samples_available&= 0x5FFF;
219
                }
220
                if(!(left_type[1] & type_mask)){
221
                    h->topleft_samples_available&= 0xFF5F;
222
                    h->left_samples_available&= 0xFF5F;
223
                }
224
            }else{
225
                int left_typei = h->slice_table[left_xy[0] + s->mb_stride ] == h->slice_num
226
                                ? s->current_picture.mb_type[left_xy[0] + s->mb_stride] : 0;
227
                assert(left_xy[0] == left_xy[1]);
228
                if(!((left_typei & type_mask) && (left_type[0] & type_mask))){
229
                    h->topleft_samples_available&= 0xDF5F;
230
                    h->left_samples_available&= 0x5F5F;
231
                }
232
            }
233
        }else{
234
            if(!(left_type[0] & type_mask)){
235
                h->topleft_samples_available&= 0xDF5F;
236
                h->left_samples_available&= 0x5F5F;
237
            }
238
        }
239

    
240
        if(!(topleft_type & type_mask))
241
            h->topleft_samples_available&= 0x7FFF;
242

    
243
        if(!(topright_type & type_mask))
244
            h->topright_samples_available&= 0xFBFF;
245

    
246
        if(IS_INTRA4x4(mb_type)){
247
            if(IS_INTRA4x4(top_type)){
248
                h->intra4x4_pred_mode_cache[4+8*0]= h->intra4x4_pred_mode[top_xy][4];
249
                h->intra4x4_pred_mode_cache[5+8*0]= h->intra4x4_pred_mode[top_xy][5];
250
                h->intra4x4_pred_mode_cache[6+8*0]= h->intra4x4_pred_mode[top_xy][6];
251
                h->intra4x4_pred_mode_cache[7+8*0]= h->intra4x4_pred_mode[top_xy][3];
252
            }else{
253
                int pred;
254
                if(!(top_type & type_mask))
255
                    pred= -1;
256
                else{
257
                    pred= 2;
258
                }
259
                h->intra4x4_pred_mode_cache[4+8*0]=
260
                h->intra4x4_pred_mode_cache[5+8*0]=
261
                h->intra4x4_pred_mode_cache[6+8*0]=
262
                h->intra4x4_pred_mode_cache[7+8*0]= pred;
263
            }
264
            for(i=0; i<2; i++){
265
                if(IS_INTRA4x4(left_type[i])){
266
                    h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[0+2*i]];
267
                    h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[1+2*i]];
268
                }else{
269
                    int pred;
270
                    if(!(left_type[i] & type_mask))
271
                        pred= -1;
272
                    else{
273
                        pred= 2;
274
                    }
275
                    h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
276
                    h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= pred;
277
                }
278
            }
279
        }
280
    }
281
    }
282

    
283

    
284
/*
285
0 . T T. T T T T
286
1 L . .L . . . .
287
2 L . .L . . . .
288
3 . T TL . . . .
289
4 L . .L . . . .
290
5 L . .. . . . .
291
*/
292
//FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
293
    if(top_type){
294
        h->non_zero_count_cache[4+8*0]= h->non_zero_count[top_xy][4];
295
        h->non_zero_count_cache[5+8*0]= h->non_zero_count[top_xy][5];
296
        h->non_zero_count_cache[6+8*0]= h->non_zero_count[top_xy][6];
297
        h->non_zero_count_cache[7+8*0]= h->non_zero_count[top_xy][3];
298

    
299
        h->non_zero_count_cache[1+8*0]= h->non_zero_count[top_xy][9];
300
        h->non_zero_count_cache[2+8*0]= h->non_zero_count[top_xy][8];
301

    
302
        h->non_zero_count_cache[1+8*3]= h->non_zero_count[top_xy][12];
303
        h->non_zero_count_cache[2+8*3]= h->non_zero_count[top_xy][11];
304

    
305
    }else{
306
        h->non_zero_count_cache[4+8*0]=
307
        h->non_zero_count_cache[5+8*0]=
308
        h->non_zero_count_cache[6+8*0]=
309
        h->non_zero_count_cache[7+8*0]=
310

    
311
        h->non_zero_count_cache[1+8*0]=
312
        h->non_zero_count_cache[2+8*0]=
313

    
314
        h->non_zero_count_cache[1+8*3]=
315
        h->non_zero_count_cache[2+8*3]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
316

    
317
    }
318

    
319
    for (i=0; i<2; i++) {
320
        if(left_type[i]){
321
            h->non_zero_count_cache[3+8*1 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[0+2*i]];
322
            h->non_zero_count_cache[3+8*2 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[1+2*i]];
323
            h->non_zero_count_cache[0+8*1 +   8*i]= h->non_zero_count[left_xy[i]][left_block[4+2*i]];
324
            h->non_zero_count_cache[0+8*4 +   8*i]= h->non_zero_count[left_xy[i]][left_block[5+2*i]];
325
        }else{
326
            h->non_zero_count_cache[3+8*1 + 2*8*i]=
327
            h->non_zero_count_cache[3+8*2 + 2*8*i]=
328
            h->non_zero_count_cache[0+8*1 +   8*i]=
329
            h->non_zero_count_cache[0+8*4 +   8*i]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
330
        }
331
    }
332

    
333
    if( h->pps.cabac ) {
334
        // top_cbp
335
        if(top_type) {
336
            h->top_cbp = h->cbp_table[top_xy];
337
        } else if(IS_INTRA(mb_type)) {
338
            h->top_cbp = 0x1C0;
339
        } else {
340
            h->top_cbp = 0;
341
        }
342
        // left_cbp
343
        if (left_type[0]) {
344
            h->left_cbp = h->cbp_table[left_xy[0]] & 0x1f0;
345
        } else if(IS_INTRA(mb_type)) {
346
            h->left_cbp = 0x1C0;
347
        } else {
348
            h->left_cbp = 0;
349
        }
350
        if (left_type[0]) {
351
            h->left_cbp |= ((h->cbp_table[left_xy[0]]>>((left_block[0]&(~1))+1))&0x1) << 1;
352
        }
353
        if (left_type[1]) {
354
            h->left_cbp |= ((h->cbp_table[left_xy[1]]>>((left_block[2]&(~1))+1))&0x1) << 3;
355
        }
356
    }
357

    
358
#if 1
359
    if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
360
        int list;
361
        for(list=0; list<h->list_count; list++){
362
            if(!USES_LIST(mb_type, list) && !IS_DIRECT(mb_type) && !h->deblocking_filter){
363
                /*if(!h->mv_cache_clean[list]){
364
                    memset(h->mv_cache [list],  0, 8*5*2*sizeof(int16_t)); //FIXME clean only input? clean at all?
365
                    memset(h->ref_cache[list], PART_NOT_AVAILABLE, 8*5*sizeof(int8_t));
366
                    h->mv_cache_clean[list]= 1;
367
                }*/
368
                continue;
369
            }
370
            h->mv_cache_clean[list]= 0;
371

    
372
            if(USES_LIST(top_type, list)){
373
                const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
374
                const int b8_xy= h->mb2b8_xy[top_xy] + h->b8_stride;
375
                *(uint32_t*)h->mv_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 0];
376
                *(uint32_t*)h->mv_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 1];
377
                *(uint32_t*)h->mv_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 2];
378
                *(uint32_t*)h->mv_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 3];
379
                h->ref_cache[list][scan8[0] + 0 - 1*8]=
380
                h->ref_cache[list][scan8[0] + 1 - 1*8]= s->current_picture.ref_index[list][b8_xy + 0];
381
                h->ref_cache[list][scan8[0] + 2 - 1*8]=
382
                h->ref_cache[list][scan8[0] + 3 - 1*8]= s->current_picture.ref_index[list][b8_xy + 1];
383
            }else{
384
                *(uint32_t*)h->mv_cache [list][scan8[0] + 0 - 1*8]=
385
                *(uint32_t*)h->mv_cache [list][scan8[0] + 1 - 1*8]=
386
                *(uint32_t*)h->mv_cache [list][scan8[0] + 2 - 1*8]=
387
                *(uint32_t*)h->mv_cache [list][scan8[0] + 3 - 1*8]= 0;
388
                *(uint32_t*)&h->ref_cache[list][scan8[0] + 0 - 1*8]= ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101;
389
            }
390

    
391
            for(i=0; i<2; i++){
392
                int cache_idx = scan8[0] - 1 + i*2*8;
393
                if(USES_LIST(left_type[i], list)){
394
                    const int b_xy= h->mb2b_xy[left_xy[i]] + 3;
395
                    const int b8_xy= h->mb2b8_xy[left_xy[i]] + 1;
396
                    *(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]];
397
                    *(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]];
398
                    h->ref_cache[list][cache_idx  ]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[0+i*2]>>1)];
399
                    h->ref_cache[list][cache_idx+8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[1+i*2]>>1)];
400
                }else{
401
                    *(uint32_t*)h->mv_cache [list][cache_idx  ]=
402
                    *(uint32_t*)h->mv_cache [list][cache_idx+8]= 0;
403
                    h->ref_cache[list][cache_idx  ]=
404
                    h->ref_cache[list][cache_idx+8]= left_type[i] ? LIST_NOT_USED : PART_NOT_AVAILABLE;
405
                }
406
            }
407

    
408
            if(for_deblock || ((IS_DIRECT(mb_type) && !h->direct_spatial_mv_pred) && !FRAME_MBAFF))
409
                continue;
410

    
411
            if(USES_LIST(topleft_type, list)){
412
                const int b_xy = h->mb2b_xy[topleft_xy] + 3 + h->b_stride + (topleft_partition & 2*h->b_stride);
413
                const int b8_xy= h->mb2b8_xy[topleft_xy] + 1 + (topleft_partition & h->b8_stride);
414
                *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
415
                h->ref_cache[list][scan8[0] - 1 - 1*8]= s->current_picture.ref_index[list][b8_xy];
416
            }else{
417
                *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= 0;
418
                h->ref_cache[list][scan8[0] - 1 - 1*8]= topleft_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
419
            }
420

    
421
            if(USES_LIST(topright_type, list)){
422
                const int b_xy= h->mb2b_xy[topright_xy] + 3*h->b_stride;
423
                const int b8_xy= h->mb2b8_xy[topright_xy] + h->b8_stride;
424
                *(uint32_t*)h->mv_cache[list][scan8[0] + 4 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
425
                h->ref_cache[list][scan8[0] + 4 - 1*8]= s->current_picture.ref_index[list][b8_xy];
426
            }else{
427
                *(uint32_t*)h->mv_cache [list][scan8[0] + 4 - 1*8]= 0;
428
                h->ref_cache[list][scan8[0] + 4 - 1*8]= topright_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
429
            }
430

    
431
            if((IS_SKIP(mb_type) || IS_DIRECT(mb_type)) && !FRAME_MBAFF)
432
                continue;
433

    
434
            h->ref_cache[list][scan8[5 ]+1] =
435
            h->ref_cache[list][scan8[7 ]+1] =
436
            h->ref_cache[list][scan8[13]+1] =  //FIXME remove past 3 (init somewhere else)
437
            h->ref_cache[list][scan8[4 ]] =
438
            h->ref_cache[list][scan8[12]] = PART_NOT_AVAILABLE;
439
            *(uint32_t*)h->mv_cache [list][scan8[5 ]+1]=
440
            *(uint32_t*)h->mv_cache [list][scan8[7 ]+1]=
441
            *(uint32_t*)h->mv_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
442
            *(uint32_t*)h->mv_cache [list][scan8[4 ]]=
443
            *(uint32_t*)h->mv_cache [list][scan8[12]]= 0;
444

    
445
            if( h->pps.cabac ) {
446
                /* XXX beurk, Load mvd */
447
                if(USES_LIST(top_type, list)){
448
                    const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
449
                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 0];
450
                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 1];
451
                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 2];
452
                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 3];
453
                }else{
454
                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 0 - 1*8]=
455
                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 1 - 1*8]=
456
                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 2 - 1*8]=
457
                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 3 - 1*8]= 0;
458
                }
459
                if(USES_LIST(left_type[0], list)){
460
                    const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
461
                    *(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]];
462
                    *(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]];
463
                }else{
464
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 0*8]=
465
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 1*8]= 0;
466
                }
467
                if(USES_LIST(left_type[1], list)){
468
                    const int b_xy= h->mb2b_xy[left_xy[1]] + 3;
469
                    *(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]];
470
                    *(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]];
471
                }else{
472
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 2*8]=
473
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 3*8]= 0;
474
                }
475
                *(uint32_t*)h->mvd_cache [list][scan8[5 ]+1]=
476
                *(uint32_t*)h->mvd_cache [list][scan8[7 ]+1]=
477
                *(uint32_t*)h->mvd_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
478
                *(uint32_t*)h->mvd_cache [list][scan8[4 ]]=
479
                *(uint32_t*)h->mvd_cache [list][scan8[12]]= 0;
480

    
481
                if(h->slice_type_nos == FF_B_TYPE){
482
                    fill_rectangle(&h->direct_cache[scan8[0]], 4, 4, 8, 0, 1);
483

    
484
                    if(IS_DIRECT(top_type)){
485
                        *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0x01010101;
486
                    }else if(IS_8X8(top_type)){
487
                        int b8_xy = h->mb2b8_xy[top_xy] + h->b8_stride;
488
                        h->direct_cache[scan8[0] + 0 - 1*8]= h->direct_table[b8_xy];
489
                        h->direct_cache[scan8[0] + 2 - 1*8]= h->direct_table[b8_xy + 1];
490
                    }else{
491
                        *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0;
492
                    }
493

    
494
                    if(IS_DIRECT(left_type[0]))
495
                        h->direct_cache[scan8[0] - 1 + 0*8]= 1;
496
                    else if(IS_8X8(left_type[0]))
497
                        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)];
498
                    else
499
                        h->direct_cache[scan8[0] - 1 + 0*8]= 0;
500

    
501
                    if(IS_DIRECT(left_type[1]))
502
                        h->direct_cache[scan8[0] - 1 + 2*8]= 1;
503
                    else if(IS_8X8(left_type[1]))
504
                        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)];
505
                    else
506
                        h->direct_cache[scan8[0] - 1 + 2*8]= 0;
507
                }
508
            }
509

    
510
            if(FRAME_MBAFF){
511
#define MAP_MVS\
512
                    MAP_F2F(scan8[0] - 1 - 1*8, topleft_type)\
513
                    MAP_F2F(scan8[0] + 0 - 1*8, top_type)\
514
                    MAP_F2F(scan8[0] + 1 - 1*8, top_type)\
515
                    MAP_F2F(scan8[0] + 2 - 1*8, top_type)\
516
                    MAP_F2F(scan8[0] + 3 - 1*8, top_type)\
517
                    MAP_F2F(scan8[0] + 4 - 1*8, topright_type)\
518
                    MAP_F2F(scan8[0] - 1 + 0*8, left_type[0])\
519
                    MAP_F2F(scan8[0] - 1 + 1*8, left_type[0])\
520
                    MAP_F2F(scan8[0] - 1 + 2*8, left_type[1])\
521
                    MAP_F2F(scan8[0] - 1 + 3*8, left_type[1])
522
                if(MB_FIELD){
523
#define MAP_F2F(idx, mb_type)\
524
                    if(!IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
525
                        h->ref_cache[list][idx] <<= 1;\
526
                        h->mv_cache[list][idx][1] /= 2;\
527
                        h->mvd_cache[list][idx][1] /= 2;\
528
                    }
529
                    MAP_MVS
530
#undef MAP_F2F
531
                }else{
532
#define MAP_F2F(idx, mb_type)\
533
                    if(IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
534
                        h->ref_cache[list][idx] >>= 1;\
535
                        h->mv_cache[list][idx][1] <<= 1;\
536
                        h->mvd_cache[list][idx][1] <<= 1;\
537
                    }
538
                    MAP_MVS
539
#undef MAP_F2F
540
                }
541
            }
542
        }
543
    }
544
#endif
545

    
546
    h->neighbor_transform_size= !!IS_8x8DCT(top_type) + !!IS_8x8DCT(left_type[0]);
547
}
548

    
549
static inline void write_back_intra_pred_mode(H264Context *h){
550
    const int mb_xy= h->mb_xy;
551

    
552
    h->intra4x4_pred_mode[mb_xy][0]= h->intra4x4_pred_mode_cache[7+8*1];
553
    h->intra4x4_pred_mode[mb_xy][1]= h->intra4x4_pred_mode_cache[7+8*2];
554
    h->intra4x4_pred_mode[mb_xy][2]= h->intra4x4_pred_mode_cache[7+8*3];
555
    h->intra4x4_pred_mode[mb_xy][3]= h->intra4x4_pred_mode_cache[7+8*4];
556
    h->intra4x4_pred_mode[mb_xy][4]= h->intra4x4_pred_mode_cache[4+8*4];
557
    h->intra4x4_pred_mode[mb_xy][5]= h->intra4x4_pred_mode_cache[5+8*4];
558
    h->intra4x4_pred_mode[mb_xy][6]= h->intra4x4_pred_mode_cache[6+8*4];
559
}
560

    
561
/**
562
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
563
 */
564
static inline int check_intra4x4_pred_mode(H264Context *h){
565
    MpegEncContext * const s = &h->s;
566
    static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
567
    static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
568
    int i;
569

    
570
    if(!(h->top_samples_available&0x8000)){
571
        for(i=0; i<4; i++){
572
            int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
573
            if(status<0){
574
                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);
575
                return -1;
576
            } else if(status){
577
                h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
578
            }
579
        }
580
    }
581

    
582
    if((h->left_samples_available&0x8888)!=0x8888){
583
        static const int mask[4]={0x8000,0x2000,0x80,0x20};
584
        for(i=0; i<4; i++){
585
            if(!(h->left_samples_available&mask[i])){
586
                int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
587
                if(status<0){
588
                    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);
589
                    return -1;
590
                } else if(status){
591
                    h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
592
                }
593
            }
594
        }
595
    }
596

    
597
    return 0;
598
} //FIXME cleanup like next
599

    
600
/**
601
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
602
 */
603
static inline int check_intra_pred_mode(H264Context *h, int mode){
604
    MpegEncContext * const s = &h->s;
605
    static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
606
    static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
607

    
608
    if(mode > 6U) {
609
        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);
610
        return -1;
611
    }
612

    
613
    if(!(h->top_samples_available&0x8000)){
614
        mode= top[ mode ];
615
        if(mode<0){
616
            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);
617
            return -1;
618
        }
619
    }
620

    
621
    if((h->left_samples_available&0x8080) != 0x8080){
622
        mode= left[ mode ];
623
        if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
624
            mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
625
        }
626
        if(mode<0){
627
            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);
628
            return -1;
629
        }
630
    }
631

    
632
    return mode;
633
}
634

    
635
/**
636
 * gets the predicted intra4x4 prediction mode.
637
 */
638
static inline int pred_intra_mode(H264Context *h, int n){
639
    const int index8= scan8[n];
640
    const int left= h->intra4x4_pred_mode_cache[index8 - 1];
641
    const int top = h->intra4x4_pred_mode_cache[index8 - 8];
642
    const int min= FFMIN(left, top);
643

    
644
    tprintf(h->s.avctx, "mode:%d %d min:%d\n", left ,top, min);
645

    
646
    if(min<0) return DC_PRED;
647
    else      return min;
648
}
649

    
650
static inline void write_back_non_zero_count(H264Context *h){
651
    const int mb_xy= h->mb_xy;
652

    
653
    h->non_zero_count[mb_xy][0]= h->non_zero_count_cache[7+8*1];
654
    h->non_zero_count[mb_xy][1]= h->non_zero_count_cache[7+8*2];
655
    h->non_zero_count[mb_xy][2]= h->non_zero_count_cache[7+8*3];
656
    h->non_zero_count[mb_xy][3]= h->non_zero_count_cache[7+8*4];
657
    h->non_zero_count[mb_xy][4]= h->non_zero_count_cache[4+8*4];
658
    h->non_zero_count[mb_xy][5]= h->non_zero_count_cache[5+8*4];
659
    h->non_zero_count[mb_xy][6]= h->non_zero_count_cache[6+8*4];
660

    
661
    h->non_zero_count[mb_xy][9]= h->non_zero_count_cache[1+8*2];
662
    h->non_zero_count[mb_xy][8]= h->non_zero_count_cache[2+8*2];
663
    h->non_zero_count[mb_xy][7]= h->non_zero_count_cache[2+8*1];
664

    
665
    h->non_zero_count[mb_xy][12]=h->non_zero_count_cache[1+8*5];
666
    h->non_zero_count[mb_xy][11]=h->non_zero_count_cache[2+8*5];
667
    h->non_zero_count[mb_xy][10]=h->non_zero_count_cache[2+8*4];
668
}
669

    
670
/**
671
 * gets the predicted number of non-zero coefficients.
672
 * @param n block index
673
 */
674
static inline int pred_non_zero_count(H264Context *h, int n){
675
    const int index8= scan8[n];
676
    const int left= h->non_zero_count_cache[index8 - 1];
677
    const int top = h->non_zero_count_cache[index8 - 8];
678
    int i= left + top;
679

    
680
    if(i<64) i= (i+1)>>1;
681

    
682
    tprintf(h->s.avctx, "pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31);
683

    
684
    return i&31;
685
}
686

    
687
static inline int fetch_diagonal_mv(H264Context *h, const int16_t **C, int i, int list, int part_width){
688
    const int topright_ref= h->ref_cache[list][ i - 8 + part_width ];
689
    MpegEncContext *s = &h->s;
690

    
691
    /* there is no consistent mapping of mvs to neighboring locations that will
692
     * make mbaff happy, so we can't move all this logic to fill_caches */
693
    if(FRAME_MBAFF){
694
        const uint32_t *mb_types = s->current_picture_ptr->mb_type;
695
        const int16_t *mv;
696
        *(uint32_t*)h->mv_cache[list][scan8[0]-2] = 0;
697
        *C = h->mv_cache[list][scan8[0]-2];
698

    
699
        if(!MB_FIELD
700
           && (s->mb_y&1) && i < scan8[0]+8 && topright_ref != PART_NOT_AVAILABLE){
701
            int topright_xy = s->mb_x + (s->mb_y-1)*s->mb_stride + (i == scan8[0]+3);
702
            if(IS_INTERLACED(mb_types[topright_xy])){
703
#define SET_DIAG_MV(MV_OP, REF_OP, X4, Y4)\
704
                const int x4 = X4, y4 = Y4;\
705
                const int mb_type = mb_types[(x4>>2)+(y4>>2)*s->mb_stride];\
706
                if(!USES_LIST(mb_type,list))\
707
                    return LIST_NOT_USED;\
708
                mv = s->current_picture_ptr->motion_val[list][x4 + y4*h->b_stride];\
709
                h->mv_cache[list][scan8[0]-2][0] = mv[0];\
710
                h->mv_cache[list][scan8[0]-2][1] = mv[1] MV_OP;\
711
                return s->current_picture_ptr->ref_index[list][(x4>>1) + (y4>>1)*h->b8_stride] REF_OP;
712

    
713
                SET_DIAG_MV(*2, >>1, s->mb_x*4+(i&7)-4+part_width, s->mb_y*4-1);
714
            }
715
        }
716
        if(topright_ref == PART_NOT_AVAILABLE
717
           && ((s->mb_y&1) || i >= scan8[0]+8) && (i&7)==4
718
           && h->ref_cache[list][scan8[0]-1] != PART_NOT_AVAILABLE){
719
            if(!MB_FIELD
720
               && IS_INTERLACED(mb_types[h->left_mb_xy[0]])){
721
                SET_DIAG_MV(*2, >>1, s->mb_x*4-1, (s->mb_y|1)*4+(s->mb_y&1)*2+(i>>4)-1);
722
            }
723
            if(MB_FIELD
724
               && !IS_INTERLACED(mb_types[h->left_mb_xy[0]])
725
               && i >= scan8[0]+8){
726
                // left shift will turn LIST_NOT_USED into PART_NOT_AVAILABLE, but that's OK.
727
                SET_DIAG_MV(/2, <<1, s->mb_x*4-1, (s->mb_y&~1)*4 - 1 + ((i-scan8[0])>>3)*2);
728
            }
729
        }
730
#undef SET_DIAG_MV
731
    }
732

    
733
    if(topright_ref != PART_NOT_AVAILABLE){
734
        *C= h->mv_cache[list][ i - 8 + part_width ];
735
        return topright_ref;
736
    }else{
737
        tprintf(s->avctx, "topright MV not available\n");
738

    
739
        *C= h->mv_cache[list][ i - 8 - 1 ];
740
        return h->ref_cache[list][ i - 8 - 1 ];
741
    }
742
}
743

    
744
/**
745
 * gets the predicted MV.
746
 * @param n the block index
747
 * @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
748
 * @param mx the x component of the predicted motion vector
749
 * @param my the y component of the predicted motion vector
750
 */
751
static inline void pred_motion(H264Context * const h, int n, int part_width, int list, int ref, int * const mx, int * const my){
752
    const int index8= scan8[n];
753
    const int top_ref=      h->ref_cache[list][ index8 - 8 ];
754
    const int left_ref=     h->ref_cache[list][ index8 - 1 ];
755
    const int16_t * const A= h->mv_cache[list][ index8 - 1 ];
756
    const int16_t * const B= h->mv_cache[list][ index8 - 8 ];
757
    const int16_t * C;
758
    int diagonal_ref, match_count;
759

    
760
    assert(part_width==1 || part_width==2 || part_width==4);
761

    
762
/* mv_cache
763
  B . . A T T T T
764
  U . . L . . , .
765
  U . . L . . . .
766
  U . . L . . , .
767
  . . . L . . . .
768
*/
769

    
770
    diagonal_ref= fetch_diagonal_mv(h, &C, index8, list, part_width);
771
    match_count= (diagonal_ref==ref) + (top_ref==ref) + (left_ref==ref);
772
    tprintf(h->s.avctx, "pred_motion match_count=%d\n", match_count);
773
    if(match_count > 1){ //most common
774
        *mx= mid_pred(A[0], B[0], C[0]);
775
        *my= mid_pred(A[1], B[1], C[1]);
776
    }else if(match_count==1){
777
        if(left_ref==ref){
778
            *mx= A[0];
779
            *my= A[1];
780
        }else if(top_ref==ref){
781
            *mx= B[0];
782
            *my= B[1];
783
        }else{
784
            *mx= C[0];
785
            *my= C[1];
786
        }
787
    }else{
788
        if(top_ref == PART_NOT_AVAILABLE && diagonal_ref == PART_NOT_AVAILABLE && left_ref != PART_NOT_AVAILABLE){
789
            *mx= A[0];
790
            *my= A[1];
791
        }else{
792
            *mx= mid_pred(A[0], B[0], C[0]);
793
            *my= mid_pred(A[1], B[1], C[1]);
794
        }
795
    }
796

    
797
    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);
798
}
799

    
800
/**
801
 * gets the directionally predicted 16x8 MV.
802
 * @param n the block index
803
 * @param mx the x component of the predicted motion vector
804
 * @param my the y component of the predicted motion vector
805
 */
806
static inline void pred_16x8_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
807
    if(n==0){
808
        const int top_ref=      h->ref_cache[list][ scan8[0] - 8 ];
809
        const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];
810

    
811
        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);
812

    
813
        if(top_ref == ref){
814
            *mx= B[0];
815
            *my= B[1];
816
            return;
817
        }
818
    }else{
819
        const int left_ref=     h->ref_cache[list][ scan8[8] - 1 ];
820
        const int16_t * const A= h->mv_cache[list][ scan8[8] - 1 ];
821

    
822
        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);
823

    
824
        if(left_ref == ref){
825
            *mx= A[0];
826
            *my= A[1];
827
            return;
828
        }
829
    }
830

    
831
    //RARE
832
    pred_motion(h, n, 4, list, ref, mx, my);
833
}
834

    
835
/**
836
 * gets the directionally predicted 8x16 MV.
837
 * @param n the block index
838
 * @param mx the x component of the predicted motion vector
839
 * @param my the y component of the predicted motion vector
840
 */
841
static inline void pred_8x16_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
842
    if(n==0){
843
        const int left_ref=      h->ref_cache[list][ scan8[0] - 1 ];
844
        const int16_t * const A=  h->mv_cache[list][ scan8[0] - 1 ];
845

    
846
        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);
847

    
848
        if(left_ref == ref){
849
            *mx= A[0];
850
            *my= A[1];
851
            return;
852
        }
853
    }else{
854
        const int16_t * C;
855
        int diagonal_ref;
856

    
857
        diagonal_ref= fetch_diagonal_mv(h, &C, scan8[4], list, 2);
858

    
859
        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);
860

    
861
        if(diagonal_ref == ref){
862
            *mx= C[0];
863
            *my= C[1];
864
            return;
865
        }
866
    }
867

    
868
    //RARE
869
    pred_motion(h, n, 2, list, ref, mx, my);
870
}
871

    
872
static inline void pred_pskip_motion(H264Context * const h, int * const mx, int * const my){
873
    const int top_ref = h->ref_cache[0][ scan8[0] - 8 ];
874
    const int left_ref= h->ref_cache[0][ scan8[0] - 1 ];
875

    
876
    tprintf(h->s.avctx, "pred_pskip: (%d) (%d) at %2d %2d\n", top_ref, left_ref, h->s.mb_x, h->s.mb_y);
877

    
878
    if(top_ref == PART_NOT_AVAILABLE || left_ref == PART_NOT_AVAILABLE
879
       || !( top_ref | *(uint32_t*)h->mv_cache[0][ scan8[0] - 8 ])
880
       || !(left_ref | *(uint32_t*)h->mv_cache[0][ scan8[0] - 1 ])){
881

    
882
        *mx = *my = 0;
883
        return;
884
    }
885

    
886
    pred_motion(h, 0, 4, 0, 0, mx, my);
887

    
888
    return;
889
}
890

    
891
static int get_scale_factor(H264Context * const h, int poc, int poc1, int i){
892
    int poc0 = h->ref_list[0][i].poc;
893
    int td = av_clip(poc1 - poc0, -128, 127);
894
    if(td == 0 || h->ref_list[0][i].long_ref){
895
        return 256;
896
    }else{
897
        int tb = av_clip(poc - poc0, -128, 127);
898
        int tx = (16384 + (FFABS(td) >> 1)) / td;
899
        return av_clip((tb*tx + 32) >> 6, -1024, 1023);
900
    }
901
}
902

    
903
static inline void direct_dist_scale_factor(H264Context * const h){
904
    MpegEncContext * const s = &h->s;
905
    const int poc = h->s.current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ];
906
    const int poc1 = h->ref_list[1][0].poc;
907
    int i, field;
908
    for(field=0; field<2; field++){
909
        const int poc  = h->s.current_picture_ptr->field_poc[field];
910
        const int poc1 = h->ref_list[1][0].field_poc[field];
911
        for(i=0; i < 2*h->ref_count[0]; i++)
912
            h->dist_scale_factor_field[field][i^field] = get_scale_factor(h, poc, poc1, i+16);
913
    }
914

    
915
    for(i=0; i<h->ref_count[0]; i++){
916
        h->dist_scale_factor[i] = get_scale_factor(h, poc, poc1, i);
917
    }
918
}
919

    
920
static void fill_colmap(H264Context *h, int map[2][16+32], int list, int field, int colfield, int mbafi){
921
    MpegEncContext * const s = &h->s;
922
    Picture * const ref1 = &h->ref_list[1][0];
923
    int j, old_ref, rfield;
924
    int start= mbafi ? 16                      : 0;
925
    int end  = mbafi ? 16+2*h->ref_count[list] : h->ref_count[list];
926
    int interl= mbafi || s->picture_structure != PICT_FRAME;
927

    
928
    /* bogus; fills in for missing frames */
929
    memset(map[list], 0, sizeof(map[list]));
930

    
931
    for(rfield=0; rfield<2; rfield++){
932
        for(old_ref=0; old_ref<ref1->ref_count[colfield][list]; old_ref++){
933
            int poc = ref1->ref_poc[colfield][list][old_ref];
934

    
935
            if     (!interl)
936
                poc |= 3;
937
            else if( interl && (poc&3) == 3) //FIXME store all MBAFF references so this isnt needed
938
                poc= (poc&~3) + rfield + 1;
939

    
940
            for(j=start; j<end; j++){
941
                if(4*h->ref_list[list][j].frame_num + (h->ref_list[list][j].reference&3) == poc){
942
                    int cur_ref= mbafi ? (j-16)^field : j;
943
                    map[list][2*old_ref + (rfield^field) + 16] = cur_ref;
944
                    if(rfield == field)
945
                        map[list][old_ref] = cur_ref;
946
                    break;
947
                }
948
            }
949
        }
950
    }
951
}
952

    
953
static inline void direct_ref_list_init(H264Context * const h){
954
    MpegEncContext * const s = &h->s;
955
    Picture * const ref1 = &h->ref_list[1][0];
956
    Picture * const cur = s->current_picture_ptr;
957
    int list, j, field;
958
    int sidx= (s->picture_structure&1)^1;
959
    int ref1sidx= (ref1->reference&1)^1;
960

    
961
    for(list=0; list<2; list++){
962
        cur->ref_count[sidx][list] = h->ref_count[list];
963
        for(j=0; j<h->ref_count[list]; j++)
964
            cur->ref_poc[sidx][list][j] = 4*h->ref_list[list][j].frame_num + (h->ref_list[list][j].reference&3);
965
    }
966

    
967
    if(s->picture_structure == PICT_FRAME){
968
        memcpy(cur->ref_count[1], cur->ref_count[0], sizeof(cur->ref_count[0]));
969
        memcpy(cur->ref_poc  [1], cur->ref_poc  [0], sizeof(cur->ref_poc  [0]));
970
    }
971

    
972
    cur->mbaff= FRAME_MBAFF;
973

    
974
    if(cur->pict_type != FF_B_TYPE || h->direct_spatial_mv_pred)
975
        return;
976

    
977
    for(list=0; list<2; list++){
978
        fill_colmap(h, h->map_col_to_list0, list, sidx, ref1sidx, 0);
979
        for(field=0; field<2; field++)
980
            fill_colmap(h, h->map_col_to_list0_field[field], list, field, field, 1);
981
    }
982
}
983

    
984
static inline void pred_direct_motion(H264Context * const h, int *mb_type){
985
    MpegEncContext * const s = &h->s;
986
    int b8_stride = h->b8_stride;
987
    int b4_stride = h->b_stride;
988
    int mb_xy = h->mb_xy;
989
    int mb_type_col[2];
990
    const int16_t (*l1mv0)[2], (*l1mv1)[2];
991
    const int8_t *l1ref0, *l1ref1;
992
    const int is_b8x8 = IS_8X8(*mb_type);
993
    unsigned int sub_mb_type;
994
    int i8, i4;
995

    
996
    assert(h->ref_list[1][0].reference&3);
997

    
998
#define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16|MB_TYPE_INTRA4x4|MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM)
999

    
1000
    if(IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])){ // AFL/AFR/FR/FL -> AFL/FL
1001
        if(!IS_INTERLACED(*mb_type)){                    //     AFR/FR    -> AFL/FL
1002
            int cur_poc = s->current_picture_ptr->poc;
1003
            int *col_poc = h->ref_list[1]->field_poc;
1004
            int col_parity = FFABS(col_poc[0] - cur_poc) >= FFABS(col_poc[1] - cur_poc);
1005
            mb_xy= s->mb_x + ((s->mb_y&~1) + col_parity)*s->mb_stride;
1006
            b8_stride = 0;
1007
        }else if(!(s->picture_structure & h->ref_list[1][0].reference) && !h->ref_list[1][0].mbaff){// FL -> FL & differ parity
1008
            int fieldoff= 2*(h->ref_list[1][0].reference)-3;
1009
            mb_xy += s->mb_stride*fieldoff;
1010
        }
1011
        goto single_col;
1012
    }else{                                               // AFL/AFR/FR/FL -> AFR/FR
1013
        if(IS_INTERLACED(*mb_type)){                     // AFL       /FL -> AFR/FR
1014
            mb_xy= s->mb_x + (s->mb_y&~1)*s->mb_stride;
1015
            mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy];
1016
            mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + s->mb_stride];
1017
            b8_stride *= 3;
1018
            b4_stride *= 6;
1019
            //FIXME IS_8X8(mb_type_col[0]) && !h->sps.direct_8x8_inference_flag
1020
            if(    (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)
1021
                && (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA)
1022
                && !is_b8x8){
1023
                sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1024
                *mb_type   |= MB_TYPE_16x8 |MB_TYPE_L0L1|MB_TYPE_DIRECT2; /* B_16x8 */
1025
            }else{
1026
                sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1027
                *mb_type   |= MB_TYPE_8x8|MB_TYPE_L0L1;
1028
            }
1029
        }else{                                           //     AFR/FR    -> AFR/FR
1030
single_col:
1031
            mb_type_col[0] =
1032
            mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy];
1033
            if(IS_8X8(mb_type_col[0]) && !h->sps.direct_8x8_inference_flag){
1034
                /* FIXME save sub mb types from previous frames (or derive from MVs)
1035
                * so we know exactly what block size to use */
1036
                sub_mb_type = MB_TYPE_8x8|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_4x4 */
1037
                *mb_type   |= MB_TYPE_8x8|MB_TYPE_L0L1;
1038
            }else if(!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)){
1039
                sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1040
                *mb_type   |= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_16x16 */
1041
            }else{
1042
                sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1043
                *mb_type   |= MB_TYPE_8x8|MB_TYPE_L0L1;
1044
            }
1045
        }
1046
    }
1047

    
1048
    l1mv0  = &h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]];
1049
    l1mv1  = &h->ref_list[1][0].motion_val[1][h->mb2b_xy [mb_xy]];
1050
    l1ref0 = &h->ref_list[1][0].ref_index [0][h->mb2b8_xy[mb_xy]];
1051
    l1ref1 = &h->ref_list[1][0].ref_index [1][h->mb2b8_xy[mb_xy]];
1052
    if(!b8_stride){
1053
        if(s->mb_y&1){
1054
            l1ref0 += h->b8_stride;
1055
            l1ref1 += h->b8_stride;
1056
            l1mv0  +=  2*b4_stride;
1057
            l1mv1  +=  2*b4_stride;
1058
        }
1059
    }
1060

    
1061
    if(h->direct_spatial_mv_pred){
1062
        int ref[2];
1063
        int mv[2][2];
1064
        int list;
1065

    
1066
        /* FIXME interlacing + spatial direct uses wrong colocated block positions */
1067

    
1068
        /* ref = min(neighbors) */
1069
        for(list=0; list<2; list++){
1070
            int refa = h->ref_cache[list][scan8[0] - 1];
1071
            int refb = h->ref_cache[list][scan8[0] - 8];
1072
            int refc = h->ref_cache[list][scan8[0] - 8 + 4];
1073
            if(refc == PART_NOT_AVAILABLE)
1074
                refc = h->ref_cache[list][scan8[0] - 8 - 1];
1075
            ref[list] = FFMIN3((unsigned)refa, (unsigned)refb, (unsigned)refc);
1076
            if(ref[list] < 0)
1077
                ref[list] = -1;
1078
        }
1079

    
1080
        if(ref[0] < 0 && ref[1] < 0){
1081
            ref[0] = ref[1] = 0;
1082
            mv[0][0] = mv[0][1] =
1083
            mv[1][0] = mv[1][1] = 0;
1084
        }else{
1085
            for(list=0; list<2; list++){
1086
                if(ref[list] >= 0)
1087
                    pred_motion(h, 0, 4, list, ref[list], &mv[list][0], &mv[list][1]);
1088
                else
1089
                    mv[list][0] = mv[list][1] = 0;
1090
            }
1091
        }
1092

    
1093
        if(ref[1] < 0){
1094
            if(!is_b8x8)
1095
                *mb_type &= ~MB_TYPE_L1;
1096
            sub_mb_type &= ~MB_TYPE_L1;
1097
        }else if(ref[0] < 0){
1098
            if(!is_b8x8)
1099
                *mb_type &= ~MB_TYPE_L0;
1100
            sub_mb_type &= ~MB_TYPE_L0;
1101
        }
1102

    
1103
        if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
1104
            for(i8=0; i8<4; i8++){
1105
                int x8 = i8&1;
1106
                int y8 = i8>>1;
1107
                int xy8 = x8+y8*b8_stride;
1108
                int xy4 = 3*x8+y8*b4_stride;
1109
                int a=0, b=0;
1110

    
1111
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1112
                    continue;
1113
                h->sub_mb_type[i8] = sub_mb_type;
1114

    
1115
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
1116
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
1117
                if(!IS_INTRA(mb_type_col[y8])
1118
                   && (   (l1ref0[xy8] == 0 && FFABS(l1mv0[xy4][0]) <= 1 && FFABS(l1mv0[xy4][1]) <= 1)
1119
                       || (l1ref0[xy8]  < 0 && l1ref1[xy8] == 0 && FFABS(l1mv1[xy4][0]) <= 1 && FFABS(l1mv1[xy4][1]) <= 1))){
1120
                    if(ref[0] > 0)
1121
                        a= pack16to32(mv[0][0],mv[0][1]);
1122
                    if(ref[1] > 0)
1123
                        b= pack16to32(mv[1][0],mv[1][1]);
1124
                }else{
1125
                    a= pack16to32(mv[0][0],mv[0][1]);
1126
                    b= pack16to32(mv[1][0],mv[1][1]);
1127
                }
1128
                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, a, 4);
1129
                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, b, 4);
1130
            }
1131
        }else if(IS_16X16(*mb_type)){
1132
            int a=0, b=0;
1133

    
1134
            fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
1135
            fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
1136
            if(!IS_INTRA(mb_type_col[0])
1137
               && (   (l1ref0[0] == 0 && FFABS(l1mv0[0][0]) <= 1 && FFABS(l1mv0[0][1]) <= 1)
1138
                   || (l1ref0[0]  < 0 && l1ref1[0] == 0 && FFABS(l1mv1[0][0]) <= 1 && FFABS(l1mv1[0][1]) <= 1
1139
                       && (h->x264_build>33 || !h->x264_build)))){
1140
                if(ref[0] > 0)
1141
                    a= pack16to32(mv[0][0],mv[0][1]);
1142
                if(ref[1] > 0)
1143
                    b= pack16to32(mv[1][0],mv[1][1]);
1144
            }else{
1145
                a= pack16to32(mv[0][0],mv[0][1]);
1146
                b= pack16to32(mv[1][0],mv[1][1]);
1147
            }
1148
            fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, a, 4);
1149
            fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, b, 4);
1150
        }else{
1151
            for(i8=0; i8<4; i8++){
1152
                const int x8 = i8&1;
1153
                const int y8 = i8>>1;
1154

    
1155
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1156
                    continue;
1157
                h->sub_mb_type[i8] = sub_mb_type;
1158

    
1159
                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mv[0][0],mv[0][1]), 4);
1160
                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mv[1][0],mv[1][1]), 4);
1161
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
1162
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
1163

    
1164
                /* col_zero_flag */
1165
                if(!IS_INTRA(mb_type_col[0]) && (   l1ref0[x8 + y8*b8_stride] == 0
1166
                                              || (l1ref0[x8 + y8*b8_stride] < 0 && l1ref1[x8 + y8*b8_stride] == 0
1167
                                                  && (h->x264_build>33 || !h->x264_build)))){
1168
                    const int16_t (*l1mv)[2]= l1ref0[x8 + y8*b8_stride] == 0 ? l1mv0 : l1mv1;
1169
                    if(IS_SUB_8X8(sub_mb_type)){
1170
                        const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride];
1171
                        if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
1172
                            if(ref[0] == 0)
1173
                                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1174
                            if(ref[1] == 0)
1175
                                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1176
                        }
1177
                    }else
1178
                    for(i4=0; i4<4; i4++){
1179
                        const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
1180
                        if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
1181
                            if(ref[0] == 0)
1182
                                *(uint32_t*)h->mv_cache[0][scan8[i8*4+i4]] = 0;
1183
                            if(ref[1] == 0)
1184
                                *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] = 0;
1185
                        }
1186
                    }
1187
                }
1188
            }
1189
        }
1190
    }else{ /* direct temporal mv pred */
1191
        const int *map_col_to_list0[2] = {h->map_col_to_list0[0], h->map_col_to_list0[1]};
1192
        const int *dist_scale_factor = h->dist_scale_factor;
1193
        int ref_offset= 0;
1194

    
1195
        if(FRAME_MBAFF && IS_INTERLACED(*mb_type)){
1196
            map_col_to_list0[0] = h->map_col_to_list0_field[s->mb_y&1][0];
1197
            map_col_to_list0[1] = h->map_col_to_list0_field[s->mb_y&1][1];
1198
            dist_scale_factor   =h->dist_scale_factor_field[s->mb_y&1];
1199
        }
1200
        if(h->ref_list[1][0].mbaff && IS_INTERLACED(mb_type_col[0]))
1201
            ref_offset += 16;
1202

    
1203
        if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
1204
            /* FIXME assumes direct_8x8_inference == 1 */
1205
            int y_shift  = 2*!IS_INTERLACED(*mb_type);
1206

    
1207
            for(i8=0; i8<4; i8++){
1208
                const int x8 = i8&1;
1209
                const int y8 = i8>>1;
1210
                int ref0, scale;
1211
                const int16_t (*l1mv)[2]= l1mv0;
1212

    
1213
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1214
                    continue;
1215
                h->sub_mb_type[i8] = sub_mb_type;
1216

    
1217
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1218
                if(IS_INTRA(mb_type_col[y8])){
1219
                    fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
1220
                    fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1221
                    fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1222
                    continue;
1223
                }
1224

    
1225
                ref0 = l1ref0[x8 + y8*b8_stride];
1226
                if(ref0 >= 0)
1227
                    ref0 = map_col_to_list0[0][ref0 + ref_offset];
1228
                else{
1229
                    ref0 = map_col_to_list0[1][l1ref1[x8 + y8*b8_stride] + ref_offset];
1230
                    l1mv= l1mv1;
1231
                }
1232
                scale = dist_scale_factor[ref0];
1233
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
1234

    
1235
                {
1236
                    const int16_t *mv_col = l1mv[x8*3 + y8*b4_stride];
1237
                    int my_col = (mv_col[1]<<y_shift)/2;
1238
                    int mx = (scale * mv_col[0] + 128) >> 8;
1239
                    int my = (scale * my_col + 128) >> 8;
1240
                    fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
1241
                    fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-my_col), 4);
1242
                }
1243
            }
1244
            return;
1245
        }
1246

    
1247
        /* one-to-one mv scaling */
1248

    
1249
        if(IS_16X16(*mb_type)){
1250
            int ref, mv0, mv1;
1251

    
1252
            fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, 0, 1);
1253
            if(IS_INTRA(mb_type_col[0])){
1254
                ref=mv0=mv1=0;
1255
            }else{
1256
                const int ref0 = l1ref0[0] >= 0 ? map_col_to_list0[0][l1ref0[0] + ref_offset]
1257
                                                : map_col_to_list0[1][l1ref1[0] + ref_offset];
1258
                const int scale = dist_scale_factor[ref0];
1259
                const int16_t *mv_col = l1ref0[0] >= 0 ? l1mv0[0] : l1mv1[0];
1260
                int mv_l0[2];
1261
                mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
1262
                mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
1263
                ref= ref0;
1264
                mv0= pack16to32(mv_l0[0],mv_l0[1]);
1265
                mv1= pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
1266
            }
1267
            fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
1268
            fill_rectangle(&h-> mv_cache[0][scan8[0]], 4, 4, 8, mv0, 4);
1269
            fill_rectangle(&h-> mv_cache[1][scan8[0]], 4, 4, 8, mv1, 4);
1270
        }else{
1271
            for(i8=0; i8<4; i8++){
1272
                const int x8 = i8&1;
1273
                const int y8 = i8>>1;
1274
                int ref0, scale;
1275
                const int16_t (*l1mv)[2]= l1mv0;
1276

    
1277
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1278
                    continue;
1279
                h->sub_mb_type[i8] = sub_mb_type;
1280
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1281
                if(IS_INTRA(mb_type_col[0])){
1282
                    fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
1283
                    fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1284
                    fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1285
                    continue;
1286
                }
1287

    
1288
                ref0 = l1ref0[x8 + y8*b8_stride] + ref_offset;
1289
                if(ref0 >= 0)
1290
                    ref0 = map_col_to_list0[0][ref0];
1291
                else{
1292
                    ref0 = map_col_to_list0[1][l1ref1[x8 + y8*b8_stride] + ref_offset];
1293
                    l1mv= l1mv1;
1294
                }
1295
                scale = dist_scale_factor[ref0];
1296

    
1297
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
1298
                if(IS_SUB_8X8(sub_mb_type)){
1299
                    const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride];
1300
                    int mx = (scale * mv_col[0] + 128) >> 8;
1301
                    int my = (scale * mv_col[1] + 128) >> 8;
1302
                    fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
1303
                    fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-mv_col[1]), 4);
1304
                }else
1305
                for(i4=0; i4<4; i4++){
1306
                    const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
1307
                    int16_t *mv_l0 = h->mv_cache[0][scan8[i8*4+i4]];
1308
                    mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
1309
                    mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
1310
                    *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] =
1311
                        pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
1312
                }
1313
            }
1314
        }
1315
    }
1316
}
1317

    
1318
static inline void write_back_motion(H264Context *h, int mb_type){
1319
    MpegEncContext * const s = &h->s;
1320
    const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
1321
    const int b8_xy= 2*s->mb_x + 2*s->mb_y*h->b8_stride;
1322
    int list;
1323

    
1324
    if(!USES_LIST(mb_type, 0))
1325
        fill_rectangle(&s->current_picture.ref_index[0][b8_xy], 2, 2, h->b8_stride, (uint8_t)LIST_NOT_USED, 1);
1326

    
1327
    for(list=0; list<h->list_count; list++){
1328
        int y;
1329
        if(!USES_LIST(mb_type, list))
1330
            continue;
1331

    
1332
        for(y=0; y<4; y++){
1333
            *(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];
1334
            *(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];
1335
        }
1336
        if( h->pps.cabac ) {
1337
            if(IS_SKIP(mb_type))
1338
                fill_rectangle(h->mvd_table[list][b_xy], 4, 4, h->b_stride, 0, 4);
1339
            else
1340
            for(y=0; y<4; y++){
1341
                *(uint64_t*)h->mvd_table[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+0 + 8*y];
1342
                *(uint64_t*)h->mvd_table[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+2 + 8*y];
1343
            }
1344
        }
1345

    
1346
        {
1347
            int8_t *ref_index = &s->current_picture.ref_index[list][b8_xy];
1348
            ref_index[0+0*h->b8_stride]= h->ref_cache[list][scan8[0]];
1349
            ref_index[1+0*h->b8_stride]= h->ref_cache[list][scan8[4]];
1350
            ref_index[0+1*h->b8_stride]= h->ref_cache[list][scan8[8]];
1351
            ref_index[1+1*h->b8_stride]= h->ref_cache[list][scan8[12]];
1352
        }
1353
    }
1354

    
1355
    if(h->slice_type_nos == FF_B_TYPE && h->pps.cabac){
1356
        if(IS_8X8(mb_type)){
1357
            uint8_t *direct_table = &h->direct_table[b8_xy];
1358
            direct_table[1+0*h->b8_stride] = IS_DIRECT(h->sub_mb_type[1]) ? 1 : 0;
1359
            direct_table[0+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[2]) ? 1 : 0;
1360
            direct_table[1+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[3]) ? 1 : 0;
1361
        }
1362
    }
1363
}
1364

    
1365
const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
1366
    int i, si, di;
1367
    uint8_t *dst;
1368
    int bufidx;
1369

    
1370
//    src[0]&0x80;                //forbidden bit
1371
    h->nal_ref_idc= src[0]>>5;
1372
    h->nal_unit_type= src[0]&0x1F;
1373

    
1374
    src++; length--;
1375
#if 0
1376
    for(i=0; i<length; i++)
1377
        printf("%2X ", src[i]);
1378
#endif
1379

    
1380
#if HAVE_FAST_UNALIGNED
1381
# if HAVE_FAST_64BIT
1382
#   define RS 7
1383
    for(i=0; i+1<length; i+=9){
1384
        if(!((~*(const uint64_t*)(src+i) & (*(const uint64_t*)(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
1385
# else
1386
#   define RS 3
1387
    for(i=0; i+1<length; i+=5){
1388
        if(!((~*(const uint32_t*)(src+i) & (*(const uint32_t*)(src+i) - 0x01000101U)) & 0x80008080U))
1389
# endif
1390
            continue;
1391
        if(i>0 && !src[i]) i--;
1392
        while(src[i]) i++;
1393
#else
1394
#   define RS 0
1395
    for(i=0; i+1<length; i+=2){
1396
        if(src[i]) continue;
1397
        if(i>0 && src[i-1]==0) i--;
1398
#endif
1399
        if(i+2<length && src[i+1]==0 && src[i+2]<=3){
1400
            if(src[i+2]!=3){
1401
                /* startcode, so we must be past the end */
1402
                length=i;
1403
            }
1404
            break;
1405
        }
1406
        i-= RS;
1407
    }
1408

    
1409
    if(i>=length-1){ //no escaped 0
1410
        *dst_length= length;
1411
        *consumed= length+1; //+1 for the header
1412
        return src;
1413
    }
1414

    
1415
    bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
1416
    av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
1417
    dst= h->rbsp_buffer[bufidx];
1418

    
1419
    if (dst == NULL){
1420
        return NULL;
1421
    }
1422

    
1423
//printf("decoding esc\n");
1424
    memcpy(dst, src, i);
1425
    si=di=i;
1426
    while(si+2<length){
1427
        //remove escapes (very rare 1:2^22)
1428
        if(src[si+2]>3){
1429
            dst[di++]= src[si++];
1430
            dst[di++]= src[si++];
1431
        }else if(src[si]==0 && src[si+1]==0){
1432
            if(src[si+2]==3){ //escape
1433
                dst[di++]= 0;
1434
                dst[di++]= 0;
1435
                si+=3;
1436
                continue;
1437
            }else //next start code
1438
                goto nsc;
1439
        }
1440

    
1441
        dst[di++]= src[si++];
1442
    }
1443
    while(si<length)
1444
        dst[di++]= src[si++];
1445
nsc:
1446

    
1447
    memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1448

    
1449
    *dst_length= di;
1450
    *consumed= si + 1;//+1 for the header
1451
//FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
1452
    return dst;
1453
}
1454

    
1455
int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
1456
    int v= *src;
1457
    int r;
1458

    
1459
    tprintf(h->s.avctx, "rbsp trailing %X\n", v);
1460

    
1461
    for(r=1; r<9; r++){
1462
        if(v&1) return r;
1463
        v>>=1;
1464
    }
1465
    return 0;
1466
}
1467

    
1468
/**
1469
 * IDCT transforms the 16 dc values and dequantizes them.
1470
 * @param qp quantization parameter
1471
 */
1472
static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
1473
#define stride 16
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
//memset(block, 64, 2*256);
1480
//return;
1481
    for(i=0; i<4; i++){
1482
        const int offset= y_offset[i];
1483
        const int z0= block[offset+stride*0] + block[offset+stride*4];
1484
        const int z1= block[offset+stride*0] - block[offset+stride*4];
1485
        const int z2= block[offset+stride*1] - block[offset+stride*5];
1486
        const int z3= block[offset+stride*1] + block[offset+stride*5];
1487

    
1488
        temp[4*i+0]= z0+z3;
1489
        temp[4*i+1]= z1+z2;
1490
        temp[4*i+2]= z1-z2;
1491
        temp[4*i+3]= z0-z3;
1492
    }
1493

    
1494
    for(i=0; i<4; i++){
1495
        const int offset= x_offset[i];
1496
        const int z0= temp[4*0+i] + temp[4*2+i];
1497
        const int z1= temp[4*0+i] - temp[4*2+i];
1498
        const int z2= temp[4*1+i] - temp[4*3+i];
1499
        const int z3= temp[4*1+i] + temp[4*3+i];
1500

    
1501
        block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual
1502
        block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
1503
        block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
1504
        block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
1505
    }
1506
}
1507

    
1508
#if 0
1509
/**
1510
 * DCT transforms the 16 dc values.
1511
 * @param qp quantization parameter ??? FIXME
1512
 */
1513
static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
1514
//    const int qmul= dequant_coeff[qp][0];
1515
    int i;
1516
    int temp[16]; //FIXME check if this is a good idea
1517
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
1518
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1519

1520
    for(i=0; i<4; i++){
1521
        const int offset= y_offset[i];
1522
        const int z0= block[offset+stride*0] + block[offset+stride*4];
1523
        const int z1= block[offset+stride*0] - block[offset+stride*4];
1524
        const int z2= block[offset+stride*1] - block[offset+stride*5];
1525
        const int z3= block[offset+stride*1] + block[offset+stride*5];
1526

1527
        temp[4*i+0]= z0+z3;
1528
        temp[4*i+1]= z1+z2;
1529
        temp[4*i+2]= z1-z2;
1530
        temp[4*i+3]= z0-z3;
1531
    }
1532

1533
    for(i=0; i<4; i++){
1534
        const int offset= x_offset[i];
1535
        const int z0= temp[4*0+i] + temp[4*2+i];
1536
        const int z1= temp[4*0+i] - temp[4*2+i];
1537
        const int z2= temp[4*1+i] - temp[4*3+i];
1538
        const int z3= temp[4*1+i] + temp[4*3+i];
1539

1540
        block[stride*0 +offset]= (z0 + z3)>>1;
1541
        block[stride*2 +offset]= (z1 + z2)>>1;
1542
        block[stride*8 +offset]= (z1 - z2)>>1;
1543
        block[stride*10+offset]= (z0 - z3)>>1;
1544
    }
1545
}
1546
#endif
1547

    
1548
#undef xStride
1549
#undef stride
1550

    
1551
static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
1552
    const int stride= 16*2;
1553
    const int xStride= 16;
1554
    int a,b,c,d,e;
1555

    
1556
    a= block[stride*0 + xStride*0];
1557
    b= block[stride*0 + xStride*1];
1558
    c= block[stride*1 + xStride*0];
1559
    d= block[stride*1 + xStride*1];
1560

    
1561
    e= a-b;
1562
    a= a+b;
1563
    b= c-d;
1564
    c= c+d;
1565

    
1566
    block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
1567
    block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
1568
    block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
1569
    block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
1570
}
1571

    
1572
#if 0
1573
static void chroma_dc_dct_c(DCTELEM *block){
1574
    const int stride= 16*2;
1575
    const int xStride= 16;
1576
    int a,b,c,d,e;
1577

1578
    a= block[stride*0 + xStride*0];
1579
    b= block[stride*0 + xStride*1];
1580
    c= block[stride*1 + xStride*0];
1581
    d= block[stride*1 + xStride*1];
1582

1583
    e= a-b;
1584
    a= a+b;
1585
    b= c-d;
1586
    c= c+d;
1587

1588
    block[stride*0 + xStride*0]= (a+c);
1589
    block[stride*0 + xStride*1]= (e+b);
1590
    block[stride*1 + xStride*0]= (a-c);
1591
    block[stride*1 + xStride*1]= (e-b);
1592
}
1593
#endif
1594

    
1595
/**
1596
 * gets the chroma qp.
1597
 */
1598
static inline int get_chroma_qp(H264Context *h, int t, int qscale){
1599
    return h->pps.chroma_qp_table[t][qscale];
1600
}
1601

    
1602
static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
1603
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1604
                           int src_x_offset, int src_y_offset,
1605
                           qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
1606
    MpegEncContext * const s = &h->s;
1607
    const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
1608
    int my=       h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
1609
    const int luma_xy= (mx&3) + ((my&3)<<2);
1610
    uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
1611
    uint8_t * src_cb, * src_cr;
1612
    int extra_width= h->emu_edge_width;
1613
    int extra_height= h->emu_edge_height;
1614
    int emu=0;
1615
    const int full_mx= mx>>2;
1616
    const int full_my= my>>2;
1617
    const int pic_width  = 16*s->mb_width;
1618
    const int pic_height = 16*s->mb_height >> MB_FIELD;
1619

    
1620
    if(mx&7) extra_width -= 3;
1621
    if(my&7) extra_height -= 3;
1622

    
1623
    if(   full_mx < 0-extra_width
1624
       || full_my < 0-extra_height
1625
       || full_mx + 16/*FIXME*/ > pic_width + extra_width
1626
       || full_my + 16/*FIXME*/ > pic_height + extra_height){
1627
        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);
1628
            src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
1629
        emu=1;
1630
    }
1631

    
1632
    qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
1633
    if(!square){
1634
        qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
1635
    }
1636

    
1637
    if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
1638

    
1639
    if(MB_FIELD){
1640
        // chroma offset when predicting from a field of opposite parity
1641
        my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
1642
        emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
1643
    }
1644
    src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
1645
    src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
1646

    
1647
    if(emu){
1648
        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);
1649
            src_cb= s->edge_emu_buffer;
1650
    }
1651
    chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
1652

    
1653
    if(emu){
1654
        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);
1655
            src_cr= s->edge_emu_buffer;
1656
    }
1657
    chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
1658
}
1659

    
1660
static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
1661
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1662
                           int x_offset, int y_offset,
1663
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1664
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
1665
                           int list0, int list1){
1666
    MpegEncContext * const s = &h->s;
1667
    qpel_mc_func *qpix_op=  qpix_put;
1668
    h264_chroma_mc_func chroma_op= chroma_put;
1669

    
1670
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
1671
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
1672
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
1673
    x_offset += 8*s->mb_x;
1674
    y_offset += 8*(s->mb_y >> MB_FIELD);
1675

    
1676
    if(list0){
1677
        Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
1678
        mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
1679
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
1680
                           qpix_op, chroma_op);
1681

    
1682
        qpix_op=  qpix_avg;
1683
        chroma_op= chroma_avg;
1684
    }
1685

    
1686
    if(list1){
1687
        Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
1688
        mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
1689
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
1690
                           qpix_op, chroma_op);
1691
    }
1692
}
1693

    
1694
static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
1695
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1696
                           int x_offset, int y_offset,
1697
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1698
                           h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
1699
                           h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
1700
                           int list0, int list1){
1701
    MpegEncContext * const s = &h->s;
1702

    
1703
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
1704
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
1705
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
1706
    x_offset += 8*s->mb_x;
1707
    y_offset += 8*(s->mb_y >> MB_FIELD);
1708

    
1709
    if(list0 && list1){
1710
        /* don't optimize for luma-only case, since B-frames usually
1711
         * use implicit weights => chroma too. */
1712
        uint8_t *tmp_cb = s->obmc_scratchpad;
1713
        uint8_t *tmp_cr = s->obmc_scratchpad + 8;
1714
        uint8_t *tmp_y  = s->obmc_scratchpad + 8*h->mb_uvlinesize;
1715
        int refn0 = h->ref_cache[0][ scan8[n] ];
1716
        int refn1 = h->ref_cache[1][ scan8[n] ];
1717

    
1718
        mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
1719
                    dest_y, dest_cb, dest_cr,
1720
                    x_offset, y_offset, qpix_put, chroma_put);
1721
        mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
1722
                    tmp_y, tmp_cb, tmp_cr,
1723
                    x_offset, y_offset, qpix_put, chroma_put);
1724

    
1725
        if(h->use_weight == 2){
1726
            int weight0 = h->implicit_weight[refn0][refn1];
1727
            int weight1 = 64 - weight0;
1728
            luma_weight_avg(  dest_y,  tmp_y,  h->  mb_linesize, 5, weight0, weight1, 0);
1729
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
1730
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
1731
        }else{
1732
            luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
1733
                            h->luma_weight[0][refn0], h->luma_weight[1][refn1],
1734
                            h->luma_offset[0][refn0] + h->luma_offset[1][refn1]);
1735
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1736
                            h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0],
1737
                            h->chroma_offset[0][refn0][0] + h->chroma_offset[1][refn1][0]);
1738
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1739
                            h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1],
1740
                            h->chroma_offset[0][refn0][1] + h->chroma_offset[1][refn1][1]);
1741
        }
1742
    }else{
1743
        int list = list1 ? 1 : 0;
1744
        int refn = h->ref_cache[list][ scan8[n] ];
1745
        Picture *ref= &h->ref_list[list][refn];
1746
        mc_dir_part(h, ref, n, square, chroma_height, delta, list,
1747
                    dest_y, dest_cb, dest_cr, x_offset, y_offset,
1748
                    qpix_put, chroma_put);
1749

    
1750
        luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
1751
                       h->luma_weight[list][refn], h->luma_offset[list][refn]);
1752
        if(h->use_weight_chroma){
1753
            chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1754
                             h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]);
1755
            chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1756
                             h->chroma_weight[list][refn][1], h->chroma_offset[list][refn][1]);
1757
        }
1758
    }
1759
}
1760

    
1761
static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
1762
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1763
                           int x_offset, int y_offset,
1764
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1765
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
1766
                           h264_weight_func *weight_op, h264_biweight_func *weight_avg,
1767
                           int list0, int list1){
1768
    if((h->use_weight==2 && list0 && list1
1769
        && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32))
1770
       || h->use_weight==1)
1771
        mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
1772
                         x_offset, y_offset, qpix_put, chroma_put,
1773
                         weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
1774
    else
1775
        mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
1776
                    x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
1777
}
1778

    
1779
static inline void prefetch_motion(H264Context *h, int list){
1780
    /* fetch pixels for estimated mv 4 macroblocks ahead
1781
     * optimized for 64byte cache lines */
1782
    MpegEncContext * const s = &h->s;
1783
    const int refn = h->ref_cache[list][scan8[0]];
1784
    if(refn >= 0){
1785
        const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
1786
        const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
1787
        uint8_t **src= h->ref_list[list][refn].data;
1788
        int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
1789
        s->dsp.prefetch(src[0]+off, s->linesize, 4);
1790
        off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
1791
        s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
1792
    }
1793
}
1794

    
1795
static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1796
                      qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
1797
                      qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
1798
                      h264_weight_func *weight_op, h264_biweight_func *weight_avg){
1799
    MpegEncContext * const s = &h->s;
1800
    const int mb_xy= h->mb_xy;
1801
    const int mb_type= s->current_picture.mb_type[mb_xy];
1802

    
1803
    assert(IS_INTER(mb_type));
1804

    
1805
    prefetch_motion(h, 0);
1806

    
1807
    if(IS_16X16(mb_type)){
1808
        mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
1809
                qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
1810
                &weight_op[0], &weight_avg[0],
1811
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1812
    }else if(IS_16X8(mb_type)){
1813
        mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
1814
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
1815
                &weight_op[1], &weight_avg[1],
1816
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1817
        mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
1818
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
1819
                &weight_op[1], &weight_avg[1],
1820
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
1821
    }else if(IS_8X16(mb_type)){
1822
        mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
1823
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1824
                &weight_op[2], &weight_avg[2],
1825
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1826
        mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
1827
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1828
                &weight_op[2], &weight_avg[2],
1829
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
1830
    }else{
1831
        int i;
1832

    
1833
        assert(IS_8X8(mb_type));
1834

    
1835
        for(i=0; i<4; i++){
1836
            const int sub_mb_type= h->sub_mb_type[i];
1837
            const int n= 4*i;
1838
            int x_offset= (i&1)<<2;
1839
            int y_offset= (i&2)<<1;
1840

    
1841
            if(IS_SUB_8X8(sub_mb_type)){
1842
                mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1843
                    qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1844
                    &weight_op[3], &weight_avg[3],
1845
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1846
            }else if(IS_SUB_8X4(sub_mb_type)){
1847
                mc_part(h, n  , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1848
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
1849
                    &weight_op[4], &weight_avg[4],
1850
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1851
                mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
1852
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
1853
                    &weight_op[4], &weight_avg[4],
1854
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1855
            }else if(IS_SUB_4X8(sub_mb_type)){
1856
                mc_part(h, n  , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1857
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1858
                    &weight_op[5], &weight_avg[5],
1859
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1860
                mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
1861
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1862
                    &weight_op[5], &weight_avg[5],
1863
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1864
            }else{
1865
                int j;
1866
                assert(IS_SUB_4X4(sub_mb_type));
1867
                for(j=0; j<4; j++){
1868
                    int sub_x_offset= x_offset + 2*(j&1);
1869
                    int sub_y_offset= y_offset +   (j&2);
1870
                    mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
1871
                        qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1872
                        &weight_op[6], &weight_avg[6],
1873
                        IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1874
                }
1875
            }
1876
        }
1877
    }
1878

    
1879
    prefetch_motion(h, 1);
1880
}
1881

    
1882
static av_cold void init_cavlc_level_tab(void){
1883
    int suffix_length, mask;
1884
    unsigned int i;
1885

    
1886
    for(suffix_length=0; suffix_length<7; suffix_length++){
1887
        for(i=0; i<(1<<LEVEL_TAB_BITS); i++){
1888
            int prefix= LEVEL_TAB_BITS - av_log2(2*i);
1889
            int level_code= (prefix<<suffix_length) + (i>>(LEVEL_TAB_BITS-prefix-1-suffix_length)) - (1<<suffix_length);
1890

    
1891
            mask= -(level_code&1);
1892
            level_code= (((2+level_code)>>1) ^ mask) - mask;
1893
            if(prefix + 1 + suffix_length <= LEVEL_TAB_BITS){
1894
                cavlc_level_tab[suffix_length][i][0]= level_code;
1895
                cavlc_level_tab[suffix_length][i][1]= prefix + 1 + suffix_length;
1896
            }else if(prefix + 1 <= LEVEL_TAB_BITS){
1897
                cavlc_level_tab[suffix_length][i][0]= prefix+100;
1898
                cavlc_level_tab[suffix_length][i][1]= prefix + 1;
1899
            }else{
1900
                cavlc_level_tab[suffix_length][i][0]= LEVEL_TAB_BITS+100;
1901
                cavlc_level_tab[suffix_length][i][1]= LEVEL_TAB_BITS;
1902
            }
1903
        }
1904
    }
1905
}
1906

    
1907
static av_cold void decode_init_vlc(void){
1908
    static int done = 0;
1909

    
1910
    if (!done) {
1911
        int i;
1912
        int offset;
1913
        done = 1;
1914

    
1915
        chroma_dc_coeff_token_vlc.table = chroma_dc_coeff_token_vlc_table;
1916
        chroma_dc_coeff_token_vlc.table_allocated = chroma_dc_coeff_token_vlc_table_size;
1917
        init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5,
1918
                 &chroma_dc_coeff_token_len [0], 1, 1,
1919
                 &chroma_dc_coeff_token_bits[0], 1, 1,
1920
                 INIT_VLC_USE_NEW_STATIC);
1921

    
1922
        offset = 0;
1923
        for(i=0; i<4; i++){
1924
            coeff_token_vlc[i].table = coeff_token_vlc_tables+offset;
1925
            coeff_token_vlc[i].table_allocated = coeff_token_vlc_tables_size[i];
1926
            init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17,
1927
                     &coeff_token_len [i][0], 1, 1,
1928
                     &coeff_token_bits[i][0], 1, 1,
1929
                     INIT_VLC_USE_NEW_STATIC);
1930
            offset += coeff_token_vlc_tables_size[i];
1931
        }
1932
        /*
1933
         * This is a one time safety check to make sure that
1934
         * the packed static coeff_token_vlc table sizes
1935
         * were initialized correctly.
1936
         */
1937
        assert(offset == FF_ARRAY_ELEMS(coeff_token_vlc_tables));
1938

    
1939
        for(i=0; i<3; i++){
1940
            chroma_dc_total_zeros_vlc[i].table = chroma_dc_total_zeros_vlc_tables[i];
1941
            chroma_dc_total_zeros_vlc[i].table_allocated = chroma_dc_total_zeros_vlc_tables_size;
1942
            init_vlc(&chroma_dc_total_zeros_vlc[i],
1943
                     CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4,
1944
                     &chroma_dc_total_zeros_len [i][0], 1, 1,
1945
                     &chroma_dc_total_zeros_bits[i][0], 1, 1,
1946
                     INIT_VLC_USE_NEW_STATIC);
1947
        }
1948
        for(i=0; i<15; i++){
1949
            total_zeros_vlc[i].table = total_zeros_vlc_tables[i];
1950
            total_zeros_vlc[i].table_allocated = total_zeros_vlc_tables_size;
1951
            init_vlc(&total_zeros_vlc[i],
1952
                     TOTAL_ZEROS_VLC_BITS, 16,
1953
                     &total_zeros_len [i][0], 1, 1,
1954
                     &total_zeros_bits[i][0], 1, 1,
1955
                     INIT_VLC_USE_NEW_STATIC);
1956
        }
1957

    
1958
        for(i=0; i<6; i++){
1959
            run_vlc[i].table = run_vlc_tables[i];
1960
            run_vlc[i].table_allocated = run_vlc_tables_size;
1961
            init_vlc(&run_vlc[i],
1962
                     RUN_VLC_BITS, 7,
1963
                     &run_len [i][0], 1, 1,
1964
                     &run_bits[i][0], 1, 1,
1965
                     INIT_VLC_USE_NEW_STATIC);
1966
        }
1967
        run7_vlc.table = run7_vlc_table,
1968
        run7_vlc.table_allocated = run7_vlc_table_size;
1969
        init_vlc(&run7_vlc, RUN7_VLC_BITS, 16,
1970
                 &run_len [6][0], 1, 1,
1971
                 &run_bits[6][0], 1, 1,
1972
                 INIT_VLC_USE_NEW_STATIC);
1973

    
1974
        init_cavlc_level_tab();
1975
    }
1976
}
1977

    
1978
static void free_tables(H264Context *h){
1979
    int i;
1980
    H264Context *hx;
1981
    av_freep(&h->intra4x4_pred_mode);
1982
    av_freep(&h->chroma_pred_mode_table);
1983
    av_freep(&h->cbp_table);
1984
    av_freep(&h->mvd_table[0]);
1985
    av_freep(&h->mvd_table[1]);
1986
    av_freep(&h->direct_table);
1987
    av_freep(&h->non_zero_count);
1988
    av_freep(&h->slice_table_base);
1989
    h->slice_table= NULL;
1990

    
1991
    av_freep(&h->mb2b_xy);
1992
    av_freep(&h->mb2b8_xy);
1993

    
1994
    for(i = 0; i < MAX_THREADS; i++) {
1995
        hx = h->thread_context[i];
1996
        if(!hx) continue;
1997
        av_freep(&hx->top_borders[1]);
1998
        av_freep(&hx->top_borders[0]);
1999
        av_freep(&hx->s.obmc_scratchpad);
2000
        av_freep(&hx->rbsp_buffer[1]);
2001
        av_freep(&hx->rbsp_buffer[0]);
2002
        if (i) av_freep(&h->thread_context[i]);
2003
    }
2004
}
2005

    
2006
static void init_dequant8_coeff_table(H264Context *h){
2007
    int i,q,x;
2008
    const int transpose = (h->s.dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
2009
    h->dequant8_coeff[0] = h->dequant8_buffer[0];
2010
    h->dequant8_coeff[1] = h->dequant8_buffer[1];
2011

    
2012
    for(i=0; i<2; i++ ){
2013
        if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
2014
            h->dequant8_coeff[1] = h->dequant8_buffer[0];
2015
            break;
2016
        }
2017

    
2018
        for(q=0; q<52; q++){
2019
            int shift = div6[q];
2020
            int idx = rem6[q];
2021
            for(x=0; x<64; x++)
2022
                h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
2023
                    ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
2024
                    h->pps.scaling_matrix8[i][x]) << shift;
2025
        }
2026
    }
2027
}
2028

    
2029
static void init_dequant4_coeff_table(H264Context *h){
2030
    int i,j,q,x;
2031
    const int transpose = (h->s.dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
2032
    for(i=0; i<6; i++ ){
2033
        h->dequant4_coeff[i] = h->dequant4_buffer[i];
2034
        for(j=0; j<i; j++){
2035
            if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
2036
                h->dequant4_coeff[i] = h->dequant4_buffer[j];
2037
                break;
2038
            }
2039
        }
2040
        if(j<i)
2041
            continue;
2042

    
2043
        for(q=0; q<52; q++){
2044
            int shift = div6[q] + 2;
2045
            int idx = rem6[q];
2046
            for(x=0; x<16; x++)
2047
                h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
2048
                    ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
2049
                    h->pps.scaling_matrix4[i][x]) << shift;
2050
        }
2051
    }
2052
}
2053

    
2054
static void init_dequant_tables(H264Context *h){
2055
    int i,x;
2056
    init_dequant4_coeff_table(h);
2057
    if(h->pps.transform_8x8_mode)
2058
        init_dequant8_coeff_table(h);
2059
    if(h->sps.transform_bypass){
2060
        for(i=0; i<6; i++)
2061
            for(x=0; x<16; x++)
2062
                h->dequant4_coeff[i][0][x] = 1<<6;
2063
        if(h->pps.transform_8x8_mode)
2064
            for(i=0; i<2; i++)
2065
                for(x=0; x<64; x++)
2066
                    h->dequant8_coeff[i][0][x] = 1<<6;
2067
    }
2068
}
2069

    
2070

    
2071
/**
2072
 * allocates tables.
2073
 * needs width/height
2074
 */
2075
static int alloc_tables(H264Context *h){
2076
    MpegEncContext * const s = &h->s;
2077
    const int big_mb_num= s->mb_stride * (s->mb_height+1);
2078
    int x,y;
2079

    
2080
    CHECKED_ALLOCZ(h->intra4x4_pred_mode, big_mb_num * 8  * sizeof(uint8_t))
2081

    
2082
    CHECKED_ALLOCZ(h->non_zero_count    , big_mb_num * 16 * sizeof(uint8_t))
2083
    CHECKED_ALLOCZ(h->slice_table_base  , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base))
2084
    CHECKED_ALLOCZ(h->cbp_table, big_mb_num * sizeof(uint16_t))
2085

    
2086
    CHECKED_ALLOCZ(h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t))
2087
    CHECKED_ALLOCZ(h->mvd_table[0], 32*big_mb_num * sizeof(uint16_t));
2088
    CHECKED_ALLOCZ(h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t));
2089
    CHECKED_ALLOCZ(h->direct_table, 32*big_mb_num * sizeof(uint8_t));
2090

    
2091
    memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride)  * sizeof(*h->slice_table_base));
2092
    h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
2093

    
2094
    CHECKED_ALLOCZ(h->mb2b_xy  , big_mb_num * sizeof(uint32_t));
2095
    CHECKED_ALLOCZ(h->mb2b8_xy , big_mb_num * sizeof(uint32_t));
2096
    for(y=0; y<s->mb_height; y++){
2097
        for(x=0; x<s->mb_width; x++){
2098
            const int mb_xy= x + y*s->mb_stride;
2099
            const int b_xy = 4*x + 4*y*h->b_stride;
2100
            const int b8_xy= 2*x + 2*y*h->b8_stride;
2101

    
2102
            h->mb2b_xy [mb_xy]= b_xy;
2103
            h->mb2b8_xy[mb_xy]= b8_xy;
2104
        }
2105
    }
2106

    
2107
    s->obmc_scratchpad = NULL;
2108

    
2109
    if(!h->dequant4_coeff[0])
2110
        init_dequant_tables(h);
2111

    
2112
    return 0;
2113
fail:
2114
    free_tables(h);
2115
    return -1;
2116
}
2117

    
2118
/**
2119
 * Mimic alloc_tables(), but for every context thread.
2120
 */
2121
static void clone_tables(H264Context *dst, H264Context *src){
2122
    dst->intra4x4_pred_mode       = src->intra4x4_pred_mode;
2123
    dst->non_zero_count           = src->non_zero_count;
2124
    dst->slice_table              = src->slice_table;
2125
    dst->cbp_table                = src->cbp_table;
2126
    dst->mb2b_xy                  = src->mb2b_xy;
2127
    dst->mb2b8_xy                 = src->mb2b8_xy;
2128
    dst->chroma_pred_mode_table   = src->chroma_pred_mode_table;
2129
    dst->mvd_table[0]             = src->mvd_table[0];
2130
    dst->mvd_table[1]             = src->mvd_table[1];
2131
    dst->direct_table             = src->direct_table;
2132

    
2133
    dst->s.obmc_scratchpad = NULL;
2134
    ff_h264_pred_init(&dst->hpc, src->s.codec_id);
2135
}
2136

    
2137
/**
2138
 * Init context
2139
 * Allocate buffers which are not shared amongst multiple threads.
2140
 */
2141
static int context_init(H264Context *h){
2142
    CHECKED_ALLOCZ(h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t))
2143
    CHECKED_ALLOCZ(h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t))
2144

    
2145
    return 0;
2146
fail:
2147
    return -1; // free_tables will clean up for us
2148
}
2149

    
2150
static av_cold void common_init(H264Context *h){
2151
    MpegEncContext * const s = &h->s;
2152

    
2153
    s->width = s->avctx->width;
2154
    s->height = s->avctx->height;
2155
    s->codec_id= s->avctx->codec->id;
2156

    
2157
    ff_h264_pred_init(&h->hpc, s->codec_id);
2158

    
2159
    h->dequant_coeff_pps= -1;
2160
    s->unrestricted_mv=1;
2161
    s->decode=1; //FIXME
2162

    
2163
    dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early
2164

    
2165
    memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
2166
    memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
2167
}
2168

    
2169
/**
2170
 * Reset SEI values at the beginning of the frame.
2171
 *
2172
 * @param h H.264 context.
2173
 */
2174
static void reset_sei(H264Context *h) {
2175
    h->sei_recovery_frame_cnt       = -1;
2176
    h->sei_dpb_output_delay         =  0;
2177
    h->sei_cpb_removal_delay        = -1;
2178
    h->sei_buffering_period_present =  0;
2179
}
2180

    
2181
static av_cold int decode_init(AVCodecContext *avctx){
2182
    H264Context *h= avctx->priv_data;
2183
    MpegEncContext * const s = &h->s;
2184

    
2185
    MPV_decode_defaults(s);
2186

    
2187
    s->avctx = avctx;
2188
    common_init(h);
2189

    
2190
    s->out_format = FMT_H264;
2191
    s->workaround_bugs= avctx->workaround_bugs;
2192

    
2193
    // set defaults
2194
//    s->decode_mb= ff_h263_decode_mb;
2195
    s->quarter_sample = 1;
2196
    if(!avctx->has_b_frames)
2197
    s->low_delay= 1;
2198

    
2199
    if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2200
        avctx->pix_fmt= PIX_FMT_VDPAU_H264;
2201
    else
2202
        avctx->pix_fmt= avctx->get_format(avctx, avctx->codec->pix_fmts);
2203
    avctx->hwaccel = ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt);
2204
    avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
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
    h->prev_poc_msb= 1<<16;
2219
    reset_sei(h);
2220
    if(avctx->codec_id == CODEC_ID_H264){
2221
        if(avctx->ticks_per_frame == 1){
2222
            s->avctx->time_base.den *=2;
2223
        }
2224
        avctx->ticks_per_frame = 2;
2225
    }
2226
    return 0;
2227
}
2228

    
2229
static int frame_start(H264Context *h){
2230
    MpegEncContext * const s = &h->s;
2231
    int i;
2232

    
2233
    if(MPV_frame_start(s, s->avctx) < 0)
2234
        return -1;
2235
    ff_er_frame_start(s);
2236
    /*
2237
     * MPV_frame_start uses pict_type to derive key_frame.
2238
     * This is incorrect for H.264; IDR markings must be used.
2239
     * Zero here; IDR markings per slice in frame or fields are ORed in later.
2240
     * See decode_nal_units().
2241
     */
2242
    s->current_picture_ptr->key_frame= 0;
2243
    s->current_picture_ptr->mmco_reset= 0;
2244

    
2245
    assert(s->linesize && s->uvlinesize);
2246

    
2247
    for(i=0; i<16; i++){
2248
        h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
2249
        h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
2250
    }
2251
    for(i=0; i<4; i++){
2252
        h->block_offset[16+i]=
2253
        h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2254
        h->block_offset[24+16+i]=
2255
        h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2256
    }
2257

    
2258
    /* can't be in alloc_tables because linesize isn't known there.
2259
     * FIXME: redo bipred weight to not require extra buffer? */
2260
    for(i = 0; i < s->avctx->thread_count; i++)
2261
        if(!h->thread_context[i]->s.obmc_scratchpad)
2262
            h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
2263

    
2264
    /* some macroblocks will be accessed before they're available */
2265
    if(FRAME_MBAFF || s->avctx->thread_count > 1)
2266
        memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
2267

    
2268
//    s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
2269

    
2270
    // We mark the current picture as non-reference after allocating it, so
2271
    // that if we break out due to an error it can be released automatically
2272
    // in the next MPV_frame_start().
2273
    // SVQ3 as well as most other codecs have only last/next/current and thus
2274
    // get released even with set reference, besides SVQ3 and others do not
2275
    // mark frames as reference later "naturally".
2276
    if(s->codec_id != CODEC_ID_SVQ3)
2277
        s->current_picture_ptr->reference= 0;
2278

    
2279
    s->current_picture_ptr->field_poc[0]=
2280
    s->current_picture_ptr->field_poc[1]= INT_MAX;
2281
    assert(s->current_picture_ptr->long_ref==0);
2282

    
2283
    return 0;
2284
}
2285

    
2286
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){
2287
    MpegEncContext * const s = &h->s;
2288
    int i;
2289
    int step    = 1;
2290
    int offset  = 1;
2291
    int uvoffset= 1;
2292
    int top_idx = 1;
2293
    int skiplast= 0;
2294

    
2295
    src_y  -=   linesize;
2296
    src_cb -= uvlinesize;
2297
    src_cr -= uvlinesize;
2298

    
2299
    if(!simple && FRAME_MBAFF){
2300
        if(s->mb_y&1){
2301
            offset  = MB_MBAFF ? 1 : 17;
2302
            uvoffset= MB_MBAFF ? 1 : 9;
2303
            if(!MB_MBAFF){
2304
                *(uint64_t*)(h->top_borders[0][s->mb_x]+ 0)= *(uint64_t*)(src_y +  15*linesize);
2305
                *(uint64_t*)(h->top_borders[0][s->mb_x]+ 8)= *(uint64_t*)(src_y +8+15*linesize);
2306
                if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2307
                    *(uint64_t*)(h->top_borders[0][s->mb_x]+16)= *(uint64_t*)(src_cb+7*uvlinesize);
2308
                    *(uint64_t*)(h->top_borders[0][s->mb_x]+24)= *(uint64_t*)(src_cr+7*uvlinesize);
2309
                }
2310
            }
2311
        }else{
2312
            if(!MB_MBAFF){
2313
                h->left_border[0]= h->top_borders[0][s->mb_x][15];
2314
                if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2315
                    h->left_border[34   ]= h->top_borders[0][s->mb_x][16+7  ];
2316
                    h->left_border[34+18]= h->top_borders[0][s->mb_x][16+8+7];
2317
                }
2318
                skiplast= 1;
2319
            }
2320
            offset  =
2321
            uvoffset=
2322
            top_idx = MB_MBAFF ? 0 : 1;
2323
        }
2324
        step= MB_MBAFF ? 2 : 1;
2325
    }
2326

    
2327
    // There are two lines saved, the line above the the top macroblock of a pair,
2328
    // and the line above the bottom macroblock
2329
    h->left_border[offset]= h->top_borders[top_idx][s->mb_x][15];
2330
    for(i=1; i<17 - skiplast; i++){
2331
        h->left_border[offset+i*step]= src_y[15+i*  linesize];
2332
    }
2333

    
2334
    *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0)= *(uint64_t*)(src_y +  16*linesize);
2335
    *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8)= *(uint64_t*)(src_y +8+16*linesize);
2336

    
2337
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2338
        h->left_border[uvoffset+34   ]= h->top_borders[top_idx][s->mb_x][16+7];
2339
        h->left_border[uvoffset+34+18]= h->top_borders[top_idx][s->mb_x][24+7];
2340
        for(i=1; i<9 - skiplast; i++){
2341
            h->left_border[uvoffset+34   +i*step]= src_cb[7+i*uvlinesize];
2342
            h->left_border[uvoffset+34+18+i*step]= src_cr[7+i*uvlinesize];
2343
        }
2344
        *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16)= *(uint64_t*)(src_cb+8*uvlinesize);
2345
        *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24)= *(uint64_t*)(src_cr+8*uvlinesize);
2346
    }
2347
}
2348

    
2349
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){
2350
    MpegEncContext * const s = &h->s;
2351
    int temp8, i;
2352
    uint64_t temp64;
2353
    int deblock_left;
2354
    int deblock_top;
2355
    int mb_xy;
2356
    int step    = 1;
2357
    int offset  = 1;
2358
    int uvoffset= 1;
2359
    int top_idx = 1;
2360

    
2361
    if(!simple && FRAME_MBAFF){
2362
        if(s->mb_y&1){
2363
            offset  = MB_MBAFF ? 1 : 17;
2364
            uvoffset= MB_MBAFF ? 1 : 9;
2365
        }else{
2366
            offset  =
2367
            uvoffset=
2368
            top_idx = MB_MBAFF ? 0 : 1;
2369
        }
2370
        step= MB_MBAFF ? 2 : 1;
2371
    }
2372

    
2373
    if(h->deblocking_filter == 2) {
2374
        mb_xy = h->mb_xy;
2375
        deblock_left = h->slice_table[mb_xy] == h->slice_table[mb_xy - 1];
2376
        deblock_top  = h->slice_table[mb_xy] == h->slice_table[h->top_mb_xy];
2377
    } else {
2378
        deblock_left = (s->mb_x > 0);
2379
        deblock_top =  (s->mb_y > !!MB_FIELD);
2380
    }
2381

    
2382
    src_y  -=   linesize + 1;
2383
    src_cb -= uvlinesize + 1;
2384
    src_cr -= uvlinesize + 1;
2385

    
2386
#define XCHG(a,b,t,xchg)\
2387
t= a;\
2388
if(xchg)\
2389
    a= b;\
2390
b= t;
2391

    
2392
    if(deblock_left){
2393
        for(i = !deblock_top; i<16; i++){
2394
            XCHG(h->left_border[offset+i*step], src_y [i*  linesize], temp8, xchg);
2395
        }
2396
        XCHG(h->left_border[offset+i*step], src_y [i*  linesize], temp8, 1);
2397
    }
2398

    
2399
    if(deblock_top){
2400
        XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg);
2401
        XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1);
2402
        if(s->mb_x+1 < s->mb_width){
2403
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x+1]), *(uint64_t*)(src_y +17), temp64, 1);
2404
        }
2405
    }
2406

    
2407
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2408
        if(deblock_left){
2409
            for(i = !deblock_top; i<8; i++){
2410
                XCHG(h->left_border[uvoffset+34   +i*step], src_cb[i*uvlinesize], temp8, xchg);
2411
                XCHG(h->left_border[uvoffset+34+18+i*step], src_cr[i*uvlinesize], temp8, xchg);
2412
            }
2413
            XCHG(h->left_border[uvoffset+34   +i*step], src_cb[i*uvlinesize], temp8, 1);
2414
            XCHG(h->left_border[uvoffset+34+18+i*step], src_cr[i*uvlinesize], temp8, 1);
2415
        }
2416
        if(deblock_top){
2417
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1);
2418
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1);
2419
        }
2420
    }
2421
}
2422

    
2423
static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
2424
    MpegEncContext * const s = &h->s;
2425
    const int mb_x= s->mb_x;
2426
    const int mb_y= s->mb_y;
2427
    const int mb_xy= h->mb_xy;
2428
    const int mb_type= s->current_picture.mb_type[mb_xy];
2429
    uint8_t  *dest_y, *dest_cb, *dest_cr;
2430
    int linesize, uvlinesize /*dct_offset*/;
2431
    int i;
2432
    int *block_offset = &h->block_offset[0];
2433
    const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
2434
    /* is_h264 should always be true if SVQ3 is disabled. */
2435
    const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
2436
    void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
2437
    void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
2438

    
2439
    dest_y  = s->current_picture.data[0] + (mb_x + mb_y * s->linesize  ) * 16;
2440
    dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
2441
    dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
2442

    
2443
    s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
2444
    s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
2445

    
2446
    if (!simple && MB_FIELD) {
2447
        linesize   = h->mb_linesize   = s->linesize * 2;
2448
        uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2449
        block_offset = &h->block_offset[24];
2450
        if(mb_y&1){ //FIXME move out of this function?
2451
            dest_y -= s->linesize*15;
2452
            dest_cb-= s->uvlinesize*7;
2453
            dest_cr-= s->uvlinesize*7;
2454
        }
2455
        if(FRAME_MBAFF) {
2456
            int list;
2457
            for(list=0; list<h->list_count; list++){
2458
                if(!USES_LIST(mb_type, list))
2459
                    continue;
2460
                if(IS_16X16(mb_type)){
2461
                    int8_t *ref = &h->ref_cache[list][scan8[0]];
2462
                    fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
2463
                }else{
2464
                    for(i=0; i<16; i+=4){
2465
                        int ref = h->ref_cache[list][scan8[i]];
2466
                        if(ref >= 0)
2467
                            fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
2468
                    }
2469
                }
2470
            }
2471
        }
2472
    } else {
2473
        linesize   = h->mb_linesize   = s->linesize;
2474
        uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2475
//        dct_offset = s->linesize * 16;
2476
    }
2477

    
2478
    if (!simple && IS_INTRA_PCM(mb_type)) {
2479
        for (i=0; i<16; i++) {
2480
            memcpy(dest_y + i*  linesize, h->mb       + i*8, 16);
2481
        }
2482
        for (i=0; i<8; i++) {
2483
            memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4,  8);
2484
            memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4,  8);
2485
        }
2486
    } else {
2487
        if(IS_INTRA(mb_type)){
2488
            if(h->deblocking_filter)
2489
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
2490

    
2491
            if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2492
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
2493
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
2494
            }
2495

    
2496
            if(IS_INTRA4x4(mb_type)){
2497
                if(simple || !s->encoding){
2498
                    if(IS_8x8DCT(mb_type)){
2499
                        if(transform_bypass){
2500
                            idct_dc_add =
2501
                            idct_add    = s->dsp.add_pixels8;
2502
                        }else{
2503
                            idct_dc_add = s->dsp.h264_idct8_dc_add;
2504
                            idct_add    = s->dsp.h264_idct8_add;
2505
                        }
2506
                        for(i=0; i<16; i+=4){
2507
                            uint8_t * const ptr= dest_y + block_offset[i];
2508
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2509
                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
2510
                                h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
2511
                            }else{
2512
                                const int nnz = h->non_zero_count_cache[ scan8[i] ];
2513
                                h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
2514
                                                            (h->topright_samples_available<<i)&0x4000, linesize);
2515
                                if(nnz){
2516
                                    if(nnz == 1 && h->mb[i*16])
2517
                                        idct_dc_add(ptr, h->mb + i*16, linesize);
2518
                                    else
2519
                                        idct_add   (ptr, h->mb + i*16, linesize);
2520
                                }
2521
                            }
2522
                        }
2523
                    }else{
2524
                        if(transform_bypass){
2525
                            idct_dc_add =
2526
                            idct_add    = s->dsp.add_pixels4;
2527
                        }else{
2528
                            idct_dc_add = s->dsp.h264_idct_dc_add;
2529
                            idct_add    = s->dsp.h264_idct_add;
2530
                        }
2531
                        for(i=0; i<16; i++){
2532
                            uint8_t * const ptr= dest_y + block_offset[i];
2533
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2534

    
2535
                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
2536
                                h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
2537
                            }else{
2538
                                uint8_t *topright;
2539
                                int nnz, tr;
2540
                                if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
2541
                                    const int topright_avail= (h->topright_samples_available<<i)&0x8000;
2542
                                    assert(mb_y || linesize <= block_offset[i]);
2543
                                    if(!topright_avail){
2544
                                        tr= ptr[3 - linesize]*0x01010101;
2545
                                        topright= (uint8_t*) &tr;
2546
                                    }else
2547
                                        topright= ptr + 4 - linesize;
2548
                                }else
2549
                                    topright= NULL;
2550

    
2551
                                h->hpc.pred4x4[ dir ](ptr, topright, linesize);
2552
                                nnz = h->non_zero_count_cache[ scan8[i] ];
2553
                                if(nnz){
2554
                                    if(is_h264){
2555
                                        if(nnz == 1 && h->mb[i*16])
2556
                                            idct_dc_add(ptr, h->mb + i*16, linesize);
2557
                                        else
2558
                                            idct_add   (ptr, h->mb + i*16, linesize);
2559
                                    }else
2560
                                        svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
2561
                                }
2562
                            }
2563
                        }
2564
                    }
2565
                }
2566
            }else{
2567
                h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
2568
                if(is_h264){
2569
                    if(!transform_bypass)
2570
                        h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
2571
                }else
2572
                    svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
2573
            }
2574
            if(h->deblocking_filter)
2575
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
2576
        }else if(is_h264){
2577
            hl_motion(h, dest_y, dest_cb, dest_cr,
2578
                      s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
2579
                      s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
2580
                      s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab);
2581
        }
2582

    
2583

    
2584
        if(!IS_INTRA4x4(mb_type)){
2585
            if(is_h264){
2586
                if(IS_INTRA16x16(mb_type)){
2587
                    if(transform_bypass){
2588
                        if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
2589
                            h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
2590
                        }else{
2591
                            for(i=0; i<16; i++){
2592
                                if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
2593
                                    s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
2594
                            }
2595
                        }
2596
                    }else{
2597
                         s->dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
2598
                    }
2599
                }else if(h->cbp&15){
2600
                    if(transform_bypass){
2601
                        const int di = IS_8x8DCT(mb_type) ? 4 : 1;
2602
                        idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
2603
                        for(i=0; i<16; i+=di){
2604
                            if(h->non_zero_count_cache[ scan8[i] ]){
2605
                                idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2606
                            }
2607
                        }
2608
                    }else{
2609
                        if(IS_8x8DCT(mb_type)){
2610
                            s->dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
2611
                        }else{
2612
                            s->dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
2613
                        }
2614
                    }
2615
                }
2616
            }else{
2617
                for(i=0; i<16; i++){
2618
                    if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
2619
                        uint8_t * const ptr= dest_y + block_offset[i];
2620
                        svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
2621
                    }
2622
                }
2623
            }
2624
        }
2625

    
2626
        if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
2627
            uint8_t *dest[2] = {dest_cb, dest_cr};
2628
            if(transform_bypass){
2629
                if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
2630
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
2631
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
2632
                }else{
2633
                    idct_add = s->dsp.add_pixels4;
2634
                    for(i=16; i<16+8; i++){
2635
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
2636
                            idct_add   (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
2637
                    }
2638
                }
2639
            }else{
2640
                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]);
2641
                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]);
2642
                if(is_h264){
2643
                    idct_add = s->dsp.h264_idct_add;
2644
                    idct_dc_add = s->dsp.h264_idct_dc_add;
2645
                    for(i=16; i<16+8; i++){
2646
                        if(h->non_zero_count_cache[ scan8[i] ])
2647
                            idct_add   (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
2648
                        else if(h->mb[i*16])
2649
                            idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
2650
                    }
2651
                }else{
2652
                    for(i=16; i<16+8; i++){
2653
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2654
                            uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
2655
                            svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
2656
                        }
2657
                    }
2658
                }
2659
            }
2660
        }
2661
    }
2662
    if(h->cbp || IS_INTRA(mb_type))
2663
        s->dsp.clear_blocks(h->mb);
2664

    
2665
    if(h->deblocking_filter) {
2666
        backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, simple);
2667
        fill_caches(h, mb_type, 1); //FIXME don't fill stuff which isn't used by filter_mb
2668
        h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2669
        h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2670
        if (!simple && FRAME_MBAFF) {
2671
            filter_mb     (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2672
        } else {
2673
            filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2674
        }
2675
    }
2676
}
2677

    
2678
/**
2679
 * Process a macroblock; this case avoids checks for expensive uncommon cases.
2680
 */
2681
static void hl_decode_mb_simple(H264Context *h){
2682
    hl_decode_mb_internal(h, 1);
2683
}
2684

    
2685
/**
2686
 * Process a macroblock; this handles edge cases, such as interlacing.
2687
 */
2688
static void av_noinline hl_decode_mb_complex(H264Context *h){
2689
    hl_decode_mb_internal(h, 0);
2690
}
2691

    
2692
static void hl_decode_mb(H264Context *h){
2693
    MpegEncContext * const s = &h->s;
2694
    const int mb_xy= h->mb_xy;
2695
    const int mb_type= s->current_picture.mb_type[mb_xy];
2696
    int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
2697

    
2698
    if (is_complex)
2699
        hl_decode_mb_complex(h);
2700
    else hl_decode_mb_simple(h);
2701
}
2702

    
2703
static void pic_as_field(Picture *pic, const int parity){
2704
    int i;
2705
    for (i = 0; i < 4; ++i) {
2706
        if (parity == PICT_BOTTOM_FIELD)
2707
            pic->data[i] += pic->linesize[i];
2708
        pic->reference = parity;
2709
        pic->linesize[i] *= 2;
2710
    }
2711
    pic->poc= pic->field_poc[parity == PICT_BOTTOM_FIELD];
2712
}
2713

    
2714
static int split_field_copy(Picture *dest, Picture *src,
2715
                            int parity, int id_add){
2716
    int match = !!(src->reference & parity);
2717

    
2718
    if (match) {
2719
        *dest = *src;
2720
        if(parity != PICT_FRAME){
2721
            pic_as_field(dest, parity);
2722
            dest->pic_id *= 2;
2723
            dest->pic_id += id_add;
2724
        }
2725
    }
2726

    
2727
    return match;
2728
}
2729

    
2730
static int build_def_list(Picture *def, Picture **in, int len, int is_long, int sel){
2731
    int i[2]={0};
2732
    int index=0;
2733

    
2734
    while(i[0]<len || i[1]<len){
2735
        while(i[0]<len && !(in[ i[0] ] && (in[ i[0] ]->reference & sel)))
2736
            i[0]++;
2737
        while(i[1]<len && !(in[ i[1] ] && (in[ i[1] ]->reference & (sel^3))))
2738
            i[1]++;
2739
        if(i[0] < len){
2740
            in[ i[0] ]->pic_id= is_long ? i[0] : in[ i[0] ]->frame_num;
2741
            split_field_copy(&def[index++], in[ i[0]++ ], sel  , 1);
2742
        }
2743
        if(i[1] < len){
2744
            in[ i[1] ]->pic_id= is_long ? i[1] : in[ i[1] ]->frame_num;
2745
            split_field_copy(&def[index++], in[ i[1]++ ], sel^3, 0);
2746
        }
2747
    }
2748

    
2749
    return index;
2750
}
2751

    
2752
static int add_sorted(Picture **sorted, Picture **src, int len, int limit, int dir){
2753
    int i, best_poc;
2754
    int out_i= 0;
2755

    
2756
    for(;;){
2757
        best_poc= dir ? INT_MIN : INT_MAX;
2758

    
2759
        for(i=0; i<len; i++){
2760
            const int poc= src[i]->poc;
2761
            if(((poc > limit) ^ dir) && ((poc < best_poc) ^ dir)){
2762
                best_poc= poc;
2763
                sorted[out_i]= src[i];
2764
            }
2765
        }
2766
        if(best_poc == (dir ? INT_MIN : INT_MAX))
2767
            break;
2768
        limit= sorted[out_i++]->poc - dir;
2769
    }
2770
    return out_i;
2771
}
2772

    
2773
/**
2774
 * fills the default_ref_list.
2775
 */
2776
static int fill_default_ref_list(H264Context *h){
2777
    MpegEncContext * const s = &h->s;
2778
    int i, len;
2779

    
2780
    if(h->slice_type_nos==FF_B_TYPE){
2781
        Picture *sorted[32];
2782
        int cur_poc, list;
2783
        int lens[2];
2784

    
2785
        if(FIELD_PICTURE)
2786
            cur_poc= s->current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ];
2787
        else
2788
            cur_poc= s->current_picture_ptr->poc;
2789

    
2790
        for(list= 0; list<2; list++){
2791
            len= add_sorted(sorted    , h->short_ref, h->short_ref_count, cur_poc, 1^list);
2792
            len+=add_sorted(sorted+len, h->short_ref, h->short_ref_count, cur_poc, 0^list);
2793
            assert(len<=32);
2794
            len= build_def_list(h->default_ref_list[list]    , sorted     , len, 0, s->picture_structure);
2795
            len+=build_def_list(h->default_ref_list[list]+len, h->long_ref, 16 , 1, s->picture_structure);
2796
            assert(len<=32);
2797

    
2798
            if(len < h->ref_count[list])
2799
                memset(&h->default_ref_list[list][len], 0, sizeof(Picture)*(h->ref_count[list] - len));
2800
            lens[list]= len;
2801
        }
2802

    
2803
        if(lens[0] == lens[1] && lens[1] > 1){
2804
            for(i=0; h->default_ref_list[0][i].data[0] == h->default_ref_list[1][i].data[0] && i<lens[0]; i++);
2805
            if(i == lens[0])
2806
                FFSWAP(Picture, h->default_ref_list[1][0], h->default_ref_list[1][1]);
2807
        }
2808
    }else{
2809
        len = build_def_list(h->default_ref_list[0]    , h->short_ref, h->short_ref_count, 0, s->picture_structure);
2810
        len+= build_def_list(h->default_ref_list[0]+len, h-> long_ref, 16                , 1, s->picture_structure);
2811
        assert(len <= 32);
2812
        if(len < h->ref_count[0])
2813
            memset(&h->default_ref_list[0][len], 0, sizeof(Picture)*(h->ref_count[0] - len));
2814
    }
2815
#ifdef TRACE
2816
    for (i=0; i<h->ref_count[0]; i++) {
2817
        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]);
2818
    }
2819
    if(h->slice_type_nos==FF_B_TYPE){
2820
        for (i=0; i<h->ref_count[1]; i++) {
2821
            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]);
2822
        }
2823
    }
2824
#endif
2825
    return 0;
2826
}
2827

    
2828
static void print_short_term(H264Context *h);
2829
static void print_long_term(H264Context *h);
2830

    
2831
/**
2832
 * Extract structure information about the picture described by pic_num in
2833
 * the current decoding context (frame or field). Note that pic_num is
2834
 * picture number without wrapping (so, 0<=pic_num<max_pic_num).
2835
 * @param pic_num picture number for which to extract structure information
2836
 * @param structure one of PICT_XXX describing structure of picture
2837
 *                      with pic_num
2838
 * @return frame number (short term) or long term index of picture
2839
 *         described by pic_num
2840
 */
2841
static int pic_num_extract(H264Context *h, int pic_num, int *structure){
2842
    MpegEncContext * const s = &h->s;
2843

    
2844
    *structure = s->picture_structure;
2845
    if(FIELD_PICTURE){
2846
        if (!(pic_num & 1))
2847
            /* opposite field */
2848
            *structure ^= PICT_FRAME;
2849
        pic_num >>= 1;
2850
    }
2851

    
2852
    return pic_num;
2853
}
2854

    
2855
static int decode_ref_pic_list_reordering(H264Context *h){
2856
    MpegEncContext * const s = &h->s;
2857
    int list, index, pic_structure;
2858

    
2859
    print_short_term(h);
2860
    print_long_term(h);
2861

    
2862
    for(list=0; list<h->list_count; list++){
2863
        memcpy(h->ref_list[list], h->default_ref_list[list], sizeof(Picture)*h->ref_count[list]);
2864

    
2865
        if(get_bits1(&s->gb)){
2866
            int pred= h->curr_pic_num;
2867

    
2868
            for(index=0; ; index++){
2869
                unsigned int reordering_of_pic_nums_idc= get_ue_golomb_31(&s->gb);
2870
                unsigned int pic_id;
2871
                int i;
2872
                Picture *ref = NULL;
2873

    
2874
                if(reordering_of_pic_nums_idc==3)
2875
                    break;
2876

    
2877
                if(index >= h->ref_count[list]){
2878
                    av_log(h->s.avctx, AV_LOG_ERROR, "reference count overflow\n");
2879
                    return -1;
2880
                }
2881

    
2882
                if(reordering_of_pic_nums_idc<3){
2883
                    if(reordering_of_pic_nums_idc<2){
2884
                        const unsigned int abs_diff_pic_num= get_ue_golomb(&s->gb) + 1;
2885
                        int frame_num;
2886

    
2887
                        if(abs_diff_pic_num > h->max_pic_num){
2888
                            av_log(h->s.avctx, AV_LOG_ERROR, "abs_diff_pic_num overflow\n");
2889
                            return -1;
2890
                        }
2891

    
2892
                        if(reordering_of_pic_nums_idc == 0) pred-= abs_diff_pic_num;
2893
                        else                                pred+= abs_diff_pic_num;
2894
                        pred &= h->max_pic_num - 1;
2895

    
2896
                        frame_num = pic_num_extract(h, pred, &pic_structure);
2897

    
2898
                        for(i= h->short_ref_count-1; i>=0; i--){
2899
                            ref = h->short_ref[i];
2900
                            assert(ref->reference);
2901
                            assert(!ref->long_ref);
2902
                            if(
2903
                                   ref->frame_num == frame_num &&
2904
                                   (ref->reference & pic_structure)
2905
                              )
2906
                                break;
2907
                        }
2908
                        if(i>=0)
2909
                            ref->pic_id= pred;
2910
                    }else{
2911
                        int long_idx;
2912
                        pic_id= get_ue_golomb(&s->gb); //long_term_pic_idx
2913

    
2914
                        long_idx= pic_num_extract(h, pic_id, &pic_structure);
2915

    
2916
                        if(long_idx>31){
2917
                            av_log(h->s.avctx, AV_LOG_ERROR, "long_term_pic_idx overflow\n");
2918
                            return -1;
2919
                        }
2920
                        ref = h->long_ref[long_idx];
2921
                        assert(!(ref && !ref->reference));
2922
                        if(ref && (ref->reference & pic_structure)){
2923
                            ref->pic_id= pic_id;
2924
                            assert(ref->long_ref);
2925
                            i=0;
2926
                        }else{
2927
                            i=-1;
2928
                        }
2929
                    }
2930

    
2931
                    if (i < 0) {
2932
                        av_log(h->s.avctx, AV_LOG_ERROR, "reference picture missing during reorder\n");
2933
                        memset(&h->ref_list[list][index], 0, sizeof(Picture)); //FIXME
2934
                    } else {
2935
                        for(i=index; i+1<h->ref_count[list]; i++){
2936
                            if(ref->long_ref == h->ref_list[list][i].long_ref && ref->pic_id == h->ref_list[list][i].pic_id)
2937
                                break;
2938
                        }
2939
                        for(; i > index; i--){
2940
                            h->ref_list[list][i]= h->ref_list[list][i-1];
2941
                        }
2942
                        h->ref_list[list][index]= *ref;
2943
                        if (FIELD_PICTURE){
2944
                            pic_as_field(&h->ref_list[list][index], pic_structure);
2945
                        }
2946
                    }
2947
                }else{
2948
                    av_log(h->s.avctx, AV_LOG_ERROR, "illegal reordering_of_pic_nums_idc\n");
2949
                    return -1;
2950
                }
2951
            }
2952
        }
2953
    }
2954
    for(list=0; list<h->list_count; list++){
2955
        for(index= 0; index < h->ref_count[list]; index++){
2956
            if(!h->ref_list[list][index].data[0]){
2957
                av_log(h->s.avctx, AV_LOG_ERROR, "Missing reference picture\n");
2958
                if(h->default_ref_list[list][0].data[0])
2959
                    h->ref_list[list][index]= h->default_ref_list[list][0];
2960
                else
2961
                    return -1;
2962
            }
2963
        }
2964
    }
2965

    
2966
    return 0;
2967
}
2968

    
2969
static void fill_mbaff_ref_list(H264Context *h){
2970
    int list, i, j;
2971
    for(list=0; list<2; list++){ //FIXME try list_count
2972
        for(i=0; i<h->ref_count[list]; i++){
2973
            Picture *frame = &h->ref_list[list][i];
2974
            Picture *field = &h->ref_list[list][16+2*i];
2975
            field[0] = *frame;
2976
            for(j=0; j<3; j++)
2977
                field[0].linesize[j] <<= 1;
2978
            field[0].reference = PICT_TOP_FIELD;
2979
            field[0].poc= field[0].field_poc[0];
2980
            field[1] = field[0];
2981
            for(j=0; j<3; j++)
2982
                field[1].data[j] += frame->linesize[j];
2983
            field[1].reference = PICT_BOTTOM_FIELD;
2984
            field[1].poc= field[1].field_poc[1];
2985

    
2986
            h->luma_weight[list][16+2*i] = h->luma_weight[list][16+2*i+1] = h->luma_weight[list][i];
2987
            h->luma_offset[list][16+2*i] = h->luma_offset[list][16+2*i+1] = h->luma_offset[list][i];
2988
            for(j=0; j<2; j++){
2989
                h->chroma_weight[list][16+2*i][j] = h->chroma_weight[list][16+2*i+1][j] = h->chroma_weight[list][i][j];
2990
                h->chroma_offset[list][16+2*i][j] = h->chroma_offset[list][16+2*i+1][j] = h->chroma_offset[list][i][j];
2991
            }
2992
        }
2993
    }
2994
    for(j=0; j<h->ref_count[1]; j++){
2995
        for(i=0; i<h->ref_count[0]; i++)
2996
            h->implicit_weight[j][16+2*i] = h->implicit_weight[j][16+2*i+1] = h->implicit_weight[j][i];
2997
        memcpy(h->implicit_weight[16+2*j],   h->implicit_weight[j], sizeof(*h->implicit_weight));
2998
        memcpy(h->implicit_weight[16+2*j+1], h->implicit_weight[j], sizeof(*h->implicit_weight));
2999
    }
3000
}
3001

    
3002
static int pred_weight_table(H264Context *h){
3003
    MpegEncContext * const s = &h->s;
3004
    int list, i;
3005
    int luma_def, chroma_def;
3006

    
3007
    h->use_weight= 0;
3008
    h->use_weight_chroma= 0;
3009
    h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
3010
    h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
3011
    luma_def = 1<<h->luma_log2_weight_denom;
3012
    chroma_def = 1<<h->chroma_log2_weight_denom;
3013

    
3014
    for(list=0; list<2; list++){
3015
        h->luma_weight_flag[list]   = 0;
3016
        h->chroma_weight_flag[list] = 0;
3017
        for(i=0; i<h->ref_count[list]; i++){
3018
            int luma_weight_flag, chroma_weight_flag;
3019

    
3020
            luma_weight_flag= get_bits1(&s->gb);
3021
            if(luma_weight_flag){
3022
                h->luma_weight[list][i]= get_se_golomb(&s->gb);
3023
                h->luma_offset[list][i]= get_se_golomb(&s->gb);
3024
                if(   h->luma_weight[list][i] != luma_def
3025
                   || h->luma_offset[list][i] != 0) {
3026
                    h->use_weight= 1;
3027
                    h->luma_weight_flag[list]= 1;
3028
                }
3029
            }else{
3030
                h->luma_weight[list][i]= luma_def;
3031
                h->luma_offset[list][i]= 0;
3032
            }
3033

    
3034
            if(CHROMA){
3035
                chroma_weight_flag= get_bits1(&s->gb);
3036
                if(chroma_weight_flag){
3037
                    int j;
3038
                    for(j=0; j<2; j++){
3039
                        h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
3040
                        h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
3041
                        if(   h->chroma_weight[list][i][j] != chroma_def
3042
                           || h->chroma_offset[list][i][j] != 0) {
3043
                            h->use_weight_chroma= 1;
3044
                            h->chroma_weight_flag[list]= 1;
3045
                        }
3046
                    }
3047
                }else{
3048
                    int j;
3049
                    for(j=0; j<2; j++){
3050
                        h->chroma_weight[list][i][j]= chroma_def;
3051
                        h->chroma_offset[list][i][j]= 0;
3052
                    }
3053
                }
3054
            }
3055
        }
3056
        if(h->slice_type_nos != FF_B_TYPE) break;
3057
    }
3058
    h->use_weight= h->use_weight || h->use_weight_chroma;
3059
    return 0;
3060
}
3061

    
3062
static void implicit_weight_table(H264Context *h){
3063
    MpegEncContext * const s = &h->s;
3064
    int ref0, ref1, i;
3065
    int cur_poc = s->current_picture_ptr->poc;
3066

    
3067
    for (i = 0; i < 2; i++) {
3068
        h->luma_weight_flag[i]   = 0;
3069
        h->chroma_weight_flag[i] = 0;
3070
    }
3071

    
3072
    if(   h->ref_count[0] == 1 && h->ref_count[1] == 1
3073
       && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
3074
        h->use_weight= 0;
3075
        h->use_weight_chroma= 0;
3076
        return;
3077
    }
3078

    
3079
    h->use_weight= 2;
3080
    h->use_weight_chroma= 2;
3081
    h->luma_log2_weight_denom= 5;
3082
    h->chroma_log2_weight_denom= 5;
3083

    
3084
    for(ref0=0; ref0 < h->ref_count[0]; ref0++){
3085
        int poc0 = h->ref_list[0][ref0].poc;
3086
        for(ref1=0; ref1 < h->ref_count[1]; ref1++){
3087
            int poc1 = h->ref_list[1][ref1].poc;
3088
            int td = av_clip(poc1 - poc0, -128, 127);
3089
            if(td){
3090
                int tb = av_clip(cur_poc - poc0, -128, 127);
3091
                int tx = (16384 + (FFABS(td) >> 1)) / td;
3092
                int dist_scale_factor = av_clip((tb*tx + 32) >> 6, -1024, 1023) >> 2;
3093
                if(dist_scale_factor < -64 || dist_scale_factor > 128)
3094
                    h->implicit_weight[ref0][ref1] = 32;
3095
                else
3096
                    h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor;
3097
            }else
3098
                h->implicit_weight[ref0][ref1] = 32;
3099
        }
3100
    }
3101
}
3102

    
3103
/**
3104
 * Mark a picture as no longer needed for reference. The refmask
3105
 * argument allows unreferencing of individual fields or the whole frame.
3106
 * If the picture becomes entirely unreferenced, but is being held for
3107
 * display purposes, it is marked as such.
3108
 * @param refmask mask of fields to unreference; the mask is bitwise
3109
 *                anded with the reference marking of pic
3110
 * @return non-zero if pic becomes entirely unreferenced (except possibly
3111
 *         for display purposes) zero if one of the fields remains in
3112
 *         reference
3113
 */
3114
static inline int unreference_pic(H264Context *h, Picture *pic, int refmask){
3115
    int i;
3116
    if (pic->reference &= refmask) {
3117
        return 0;
3118
    } else {
3119
        for(i = 0; h->delayed_pic[i]; i++)
3120
            if(pic == h->delayed_pic[i]){
3121
                pic->reference=DELAYED_PIC_REF;
3122
                break;
3123
            }
3124
        return 1;
3125
    }
3126
}
3127

    
3128
/**
3129
 * instantaneous decoder refresh.
3130
 */
3131
static void idr(H264Context *h){
3132
    int i;
3133

    
3134
    for(i=0; i<16; i++){
3135
        remove_long(h, i, 0);
3136
    }
3137
    assert(h->long_ref_count==0);
3138

    
3139
    for(i=0; i<h->short_ref_count; i++){
3140
        unreference_pic(h, h->short_ref[i], 0);
3141
        h->short_ref[i]= NULL;
3142
    }
3143
    h->short_ref_count=0;
3144
    h->prev_frame_num= 0;
3145
    h->prev_frame_num_offset= 0;
3146
    h->prev_poc_msb=
3147
    h->prev_poc_lsb= 0;
3148
}
3149

    
3150
/* forget old pics after a seek */
3151
static void flush_dpb(AVCodecContext *avctx){
3152
    H264Context *h= avctx->priv_data;
3153
    int i;
3154
    for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
3155
        if(h->delayed_pic[i])
3156
            h->delayed_pic[i]->reference= 0;
3157
        h->delayed_pic[i]= NULL;
3158
    }
3159
    h->outputed_poc= INT_MIN;
3160
    h->prev_interlaced_frame = 1;
3161
    idr(h);
3162
    if(h->s.current_picture_ptr)
3163
        h->s.current_picture_ptr->reference= 0;
3164
    h->s.first_field= 0;
3165
    reset_sei(h);
3166
    ff_mpeg_flush(avctx);
3167
}
3168

    
3169
/**
3170
 * Find a Picture in the short term reference list by frame number.
3171
 * @param frame_num frame number to search for
3172
 * @param idx the index into h->short_ref where returned picture is found
3173
 *            undefined if no picture found.
3174
 * @return pointer to the found picture, or NULL if no pic with the provided
3175
 *                 frame number is found
3176
 */
3177
static Picture * find_short(H264Context *h, int frame_num, int *idx){
3178
    MpegEncContext * const s = &h->s;
3179
    int i;
3180

    
3181
    for(i=0; i<h->short_ref_count; i++){
3182
        Picture *pic= h->short_ref[i];
3183
        if(s->avctx->debug&FF_DEBUG_MMCO)
3184
            av_log(h->s.avctx, AV_LOG_DEBUG, "%d %d %p\n", i, pic->frame_num, pic);
3185
        if(pic->frame_num == frame_num) {
3186
            *idx = i;
3187
            return pic;
3188
        }
3189
    }
3190
    return NULL;
3191
}
3192

    
3193
/**
3194
 * Remove a picture from the short term reference list by its index in
3195
 * that list.  This does no checking on the provided index; it is assumed
3196
 * to be valid. Other list entries are shifted down.
3197
 * @param i index into h->short_ref of picture to remove.
3198
 */
3199
static void remove_short_at_index(H264Context *h, int i){
3200
    assert(i >= 0 && i < h->short_ref_count);
3201
    h->short_ref[i]= NULL;
3202
    if (--h->short_ref_count)
3203
        memmove(&h->short_ref[i], &h->short_ref[i+1], (h->short_ref_count - i)*sizeof(Picture*));
3204
}
3205

    
3206
/**
3207
 *
3208
 * @return the removed picture or NULL if an error occurs
3209
 */
3210
static Picture * remove_short(H264Context *h, int frame_num, int ref_mask){
3211
    MpegEncContext * const s = &h->s;
3212
    Picture *pic;
3213
    int i;
3214

    
3215
    if(s->avctx->debug&FF_DEBUG_MMCO)
3216
        av_log(h->s.avctx, AV_LOG_DEBUG, "remove short %d count %d\n", frame_num, h->short_ref_count);
3217

    
3218
    pic = find_short(h, frame_num, &i);
3219
    if (pic){
3220
        if(unreference_pic(h, pic, ref_mask))
3221
        remove_short_at_index(h, i);
3222
    }
3223

    
3224
    return pic;
3225
}
3226

    
3227
/**
3228
 * Remove a picture from the long term reference list by its index in
3229
 * that list.
3230
 * @return the removed picture or NULL if an error occurs
3231
 */
3232
static Picture * remove_long(H264Context *h, int i, int ref_mask){
3233
    Picture *pic;
3234

    
3235
    pic= h->long_ref[i];
3236
    if (pic){
3237
        if(unreference_pic(h, pic, ref_mask)){
3238
            assert(h->long_ref[i]->long_ref == 1);
3239
            h->long_ref[i]->long_ref= 0;
3240
            h->long_ref[i]= NULL;
3241
            h->long_ref_count--;
3242
        }
3243
    }
3244

    
3245
    return pic;
3246
}
3247

    
3248
/**
3249
 * print short term list
3250
 */
3251
static void print_short_term(H264Context *h) {
3252
    uint32_t i;
3253
    if(h->s.avctx->debug&FF_DEBUG_MMCO) {
3254
        av_log(h->s.avctx, AV_LOG_DEBUG, "short term list:\n");
3255
        for(i=0; i<h->short_ref_count; i++){
3256
            Picture *pic= h->short_ref[i];
3257
            av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]);
3258
        }
3259
    }
3260
}
3261

    
3262
/**
3263
 * print long term list
3264
 */
3265
static void print_long_term(H264Context *h) {
3266
    uint32_t i;
3267
    if(h->s.avctx->debug&FF_DEBUG_MMCO) {
3268
        av_log(h->s.avctx, AV_LOG_DEBUG, "long term list:\n");
3269
        for(i = 0; i < 16; i++){
3270
            Picture *pic= h->long_ref[i];
3271
            if (pic) {
3272
                av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]);
3273
            }
3274
        }
3275
    }
3276
}
3277

    
3278
/**
3279
 * Executes the reference picture marking (memory management control operations).
3280
 */
3281
static int execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){
3282
    MpegEncContext * const s = &h->s;
3283
    int i, av_uninit(j);
3284
    int current_ref_assigned=0;
3285
    Picture *av_uninit(pic);
3286

    
3287
    if((s->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0)
3288
        av_log(h->s.avctx, AV_LOG_DEBUG, "no mmco here\n");
3289

    
3290
    for(i=0; i<mmco_count; i++){
3291
        int av_uninit(structure), av_uninit(frame_num);
3292
        if(s->avctx->debug&FF_DEBUG_MMCO)
3293
            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);
3294

    
3295
        if(   mmco[i].opcode == MMCO_SHORT2UNUSED
3296
           || mmco[i].opcode == MMCO_SHORT2LONG){
3297
            frame_num = pic_num_extract(h, mmco[i].short_pic_num, &structure);
3298
            pic = find_short(h, frame_num, &j);
3299
            if(!pic){
3300
                if(mmco[i].opcode != MMCO_SHORT2LONG || !h->long_ref[mmco[i].long_arg]
3301
                   || h->long_ref[mmco[i].long_arg]->frame_num != frame_num)
3302
                av_log(h->s.avctx, AV_LOG_ERROR, "mmco: unref short failure\n");
3303
                continue;
3304
            }
3305
        }
3306

    
3307
        switch(mmco[i].opcode){
3308
        case MMCO_SHORT2UNUSED:
3309
            if(s->avctx->debug&FF_DEBUG_MMCO)
3310
                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);
3311
            remove_short(h, frame_num, structure ^ PICT_FRAME);
3312
            break;
3313
        case MMCO_SHORT2LONG:
3314
                if (h->long_ref[mmco[i].long_arg] != pic)
3315
                    remove_long(h, mmco[i].long_arg, 0);
3316

    
3317
                remove_short_at_index(h, j);
3318
                h->long_ref[ mmco[i].long_arg ]= pic;
3319
                if (h->long_ref[ mmco[i].long_arg ]){
3320
                    h->long_ref[ mmco[i].long_arg ]->long_ref=1;
3321
                    h->long_ref_count++;
3322
                }
3323
            break;
3324
        case MMCO_LONG2UNUSED:
3325
            j = pic_num_extract(h, mmco[i].long_arg, &structure);
3326
            pic = h->long_ref[j];
3327
            if (pic) {
3328
                remove_long(h, j, structure ^ PICT_FRAME);
3329
            } else if(s->avctx->debug&FF_DEBUG_MMCO)
3330
                av_log(h->s.avctx, AV_LOG_DEBUG, "mmco: unref long failure\n");
3331
            break;
3332
        case MMCO_LONG:
3333
                    // Comment below left from previous code as it is an interresting note.
3334
                    /* First field in pair is in short term list or
3335
                     * at a different long term index.
3336
                     * This is not allowed; see 7.4.3.3, notes 2 and 3.
3337
                     * Report the problem and keep the pair where it is,
3338
                     * and mark this field valid.
3339
                     */
3340

    
3341
            if (h->long_ref[mmco[i].long_arg] != s->current_picture_ptr) {
3342
                remove_long(h, mmco[i].long_arg, 0);
3343

    
3344
                h->long_ref[ mmco[i].long_arg ]= s->current_picture_ptr;
3345
                h->long_ref[ mmco[i].long_arg ]->long_ref=1;
3346
                h->long_ref_count++;
3347
            }
3348

    
3349
            s->current_picture_ptr->reference |= s->picture_structure;
3350
            current_ref_assigned=1;
3351
            break;
3352
        case MMCO_SET_MAX_LONG:
3353
            assert(mmco[i].long_arg <= 16);
3354
            // just remove the long term which index is greater than new max
3355
            for(j = mmco[i].long_arg; j<16; j++){
3356
                remove_long(h, j, 0);
3357
            }
3358
            break;
3359
        case MMCO_RESET:
3360
            while(h->short_ref_count){
3361
                remove_short(h, h->short_ref[0]->frame_num, 0);
3362
            }
3363
            for(j = 0; j < 16; j++) {
3364
                remove_long(h, j, 0);
3365
            }
3366
            s->current_picture_ptr->poc=
3367
            s->current_picture_ptr->field_poc[0]=
3368
            s->current_picture_ptr->field_poc[1]=
3369
            h->poc_lsb=
3370
            h->poc_msb=
3371
            h->frame_num=
3372
            s->current_picture_ptr->frame_num= 0;
3373
            s->current_picture_ptr->mmco_reset=1;
3374
            break;
3375
        default: assert(0);
3376
        }
3377
    }
3378

    
3379
    if (!current_ref_assigned) {
3380
        /* Second field of complementary field pair; the first field of
3381
         * which is already referenced. If short referenced, it
3382
         * should be first entry in short_ref. If not, it must exist
3383
         * in long_ref; trying to put it on the short list here is an
3384
         * error in the encoded bit stream (ref: 7.4.3.3, NOTE 2 and 3).
3385
         */
3386
        if (h->short_ref_count && h->short_ref[0] == s->current_picture_ptr) {
3387
            /* Just mark the second field valid */
3388
            s->current_picture_ptr->reference = PICT_FRAME;
3389
        } else if (s->current_picture_ptr->long_ref) {
3390
            av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term reference "
3391
                                             "assignment for second field "
3392
                                             "in complementary field pair "
3393
                                             "(first field is long term)\n");
3394
        } else {
3395
            pic= remove_short(h, s->current_picture_ptr->frame_num, 0);
3396
            if(pic){
3397
                av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term buffer state detected\n");
3398
            }
3399

    
3400
            if(h->short_ref_count)
3401
                memmove(&h->short_ref[1], &h->short_ref[0], h->short_ref_count*sizeof(Picture*));
3402

    
3403
            h->short_ref[0]= s->current_picture_ptr;
3404
            h->short_ref_count++;
3405
            s->current_picture_ptr->reference |= s->picture_structure;
3406
        }
3407
    }
3408

    
3409
    if (h->long_ref_count + h->short_ref_count > h->sps.ref_frame_count){
3410

    
3411
        /* We have too many reference frames, probably due to corrupted
3412
         * stream. Need to discard one frame. Prevents overrun of the
3413
         * short_ref and long_ref buffers.
3414
         */
3415
        av_log(h->s.avctx, AV_LOG_ERROR,
3416
               "number of reference frames exceeds max (probably "
3417
               "corrupt input), discarding one\n");
3418

    
3419
        if (h->long_ref_count && !h->short_ref_count) {
3420
            for (i = 0; i < 16; ++i)
3421
                if (h->long_ref[i])
3422
                    break;
3423

    
3424
            assert(i < 16);
3425
            remove_long(h, i, 0);
3426
        } else {
3427
            pic = h->short_ref[h->short_ref_count - 1];
3428
            remove_short(h, pic->frame_num, 0);
3429
        }
3430
    }
3431

    
3432
    print_short_term(h);
3433
    print_long_term(h);
3434
    return 0;
3435
}
3436

    
3437
static int decode_ref_pic_marking(H264Context *h, GetBitContext *gb){
3438
    MpegEncContext * const s = &h->s;
3439
    int i;
3440

    
3441
    h->mmco_index= 0;
3442
    if(h->nal_unit_type == NAL_IDR_SLICE){ //FIXME fields
3443
        s->broken_link= get_bits1(gb) -1;
3444
        if(get_bits1(gb)){
3445
            h->mmco[0].opcode= MMCO_LONG;
3446
            h->mmco[0].long_arg= 0;
3447
            h->mmco_index= 1;
3448
        }
3449
    }else{
3450
        if(get_bits1(gb)){ // adaptive_ref_pic_marking_mode_flag
3451
            for(i= 0; i<MAX_MMCO_COUNT; i++) {
3452
                MMCOOpcode opcode= get_ue_golomb_31(gb);
3453

    
3454
                h->mmco[i].opcode= opcode;
3455
                if(opcode==MMCO_SHORT2UNUSED || opcode==MMCO_SHORT2LONG){
3456
                    h->mmco[i].short_pic_num= (h->curr_pic_num - get_ue_golomb(gb) - 1) & (h->max_pic_num - 1);
3457
/*                    if(h->mmco[i].short_pic_num >= h->short_ref_count || h->short_ref[ h->mmco[i].short_pic_num ] == NULL){
3458
                        av_log(s->avctx, AV_LOG_ERROR, "illegal short ref in memory management control operation %d\n", mmco);
3459
                        return -1;
3460
                    }*/
3461
                }
3462
                if(opcode==MMCO_SHORT2LONG || opcode==MMCO_LONG2UNUSED || opcode==MMCO_LONG || opcode==MMCO_SET_MAX_LONG){
3463
                    unsigned int long_arg= get_ue_golomb_31(gb);
3464
                    if(long_arg >= 32 || (long_arg >= 16 && !(opcode == MMCO_LONG2UNUSED && FIELD_PICTURE))){
3465
                        av_log(h->s.avctx, AV_LOG_ERROR, "illegal long ref in memory management control operation %d\n", opcode);
3466
                        return -1;
3467
                    }
3468
                    h->mmco[i].long_arg= long_arg;
3469
                }
3470

    
3471
                if(opcode > (unsigned)MMCO_LONG){
3472
                    av_log(h->s.avctx, AV_LOG_ERROR, "illegal memory management control operation %d\n", opcode);
3473
                    return -1;
3474
                }
3475
                if(opcode == MMCO_END)
3476
                    break;
3477
            }
3478
            h->mmco_index= i;
3479
        }else{
3480
            assert(h->long_ref_count + h->short_ref_count <= h->sps.ref_frame_count);
3481

    
3482
            if(h->short_ref_count && h->long_ref_count + h->short_ref_count == h->sps.ref_frame_count &&
3483
                    !(FIELD_PICTURE && !s->first_field && s->current_picture_ptr->reference)) {
3484
                h->mmco[0].opcode= MMCO_SHORT2UNUSED;
3485
                h->mmco[0].short_pic_num= h->short_ref[ h->short_ref_count - 1 ]->frame_num;
3486
                h->mmco_index= 1;
3487
                if (FIELD_PICTURE) {
3488
                    h->mmco[0].short_pic_num *= 2;
3489
                    h->mmco[1].opcode= MMCO_SHORT2UNUSED;
3490
                    h->mmco[1].short_pic_num= h->mmco[0].short_pic_num + 1;
3491
                    h->mmco_index= 2;
3492
                }
3493
            }
3494
        }
3495
    }
3496

    
3497
    return 0;
3498
}
3499

    
3500
static int init_poc(H264Context *h){
3501
    MpegEncContext * const s = &h->s;
3502
    const int max_frame_num= 1<<h->sps.log2_max_frame_num;
3503
    int field_poc[2];
3504
    Picture *cur = s->current_picture_ptr;
3505

    
3506
    h->frame_num_offset= h->prev_frame_num_offset;
3507
    if(h->frame_num < h->prev_frame_num)
3508
        h->frame_num_offset += max_frame_num;
3509

    
3510
    if(h->sps.poc_type==0){
3511
        const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
3512

    
3513
        if     (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
3514
            h->poc_msb = h->prev_poc_msb + max_poc_lsb;
3515
        else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
3516
            h->poc_msb = h->prev_poc_msb - max_poc_lsb;
3517
        else
3518
            h->poc_msb = h->prev_poc_msb;
3519
//printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
3520
        field_poc[0] =
3521
        field_poc[1] = h->poc_msb + h->poc_lsb;
3522
        if(s->picture_structure == PICT_FRAME)
3523
            field_poc[1] += h->delta_poc_bottom;
3524
    }else if(h->sps.poc_type==1){
3525
        int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
3526
        int i;
3527

    
3528
        if(h->sps.poc_cycle_length != 0)
3529
            abs_frame_num = h->frame_num_offset + h->frame_num;
3530
        else
3531
            abs_frame_num = 0;
3532

    
3533
        if(h->nal_ref_idc==0 && abs_frame_num > 0)
3534
            abs_frame_num--;
3535

    
3536
        expected_delta_per_poc_cycle = 0;
3537
        for(i=0; i < h->sps.poc_cycle_length; i++)
3538
            expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
3539

    
3540
        if(abs_frame_num > 0){
3541
            int poc_cycle_cnt          = (abs_frame_num - 1) / h->sps.poc_cycle_length;
3542
            int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
3543

    
3544
            expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
3545
            for(i = 0; i <= frame_num_in_poc_cycle; i++)
3546
                expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
3547
        } else
3548
            expectedpoc = 0;
3549

    
3550
        if(h->nal_ref_idc == 0)
3551
            expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
3552

    
3553
        field_poc[0] = expectedpoc + h->delta_poc[0];
3554
        field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
3555

    
3556
        if(s->picture_structure == PICT_FRAME)
3557
            field_poc[1] += h->delta_poc[1];
3558
    }else{
3559
        int poc= 2*(h->frame_num_offset + h->frame_num);
3560

    
3561
        if(!h->nal_ref_idc)
3562
            poc--;
3563

    
3564
        field_poc[0]= poc;
3565
        field_poc[1]= poc;
3566
    }
3567

    
3568
    if(s->picture_structure != PICT_BOTTOM_FIELD)
3569
        s->current_picture_ptr->field_poc[0]= field_poc[0];
3570
    if(s->picture_structure != PICT_TOP_FIELD)
3571
        s->current_picture_ptr->field_poc[1]= field_poc[1];
3572
    cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
3573

    
3574
    return 0;
3575
}
3576

    
3577

    
3578
/**
3579
 * initialize scan tables
3580
 */
3581
static void init_scan_tables(H264Context *h){
3582
    MpegEncContext * const s = &h->s;
3583
    int i;
3584
    if(s->dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
3585
        memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
3586
        memcpy(h-> field_scan,  field_scan, 16*sizeof(uint8_t));
3587
    }else{
3588
        for(i=0; i<16; i++){
3589
#define T(x) (x>>2) | ((x<<2) & 0xF)
3590
            h->zigzag_scan[i] = T(zigzag_scan[i]);
3591
            h-> field_scan[i] = T( field_scan[i]);
3592
#undef T
3593
        }
3594
    }
3595
    if(s->dsp.h264_idct8_add == ff_h264_idct8_add_c){
3596
        memcpy(h->zigzag_scan8x8,       ff_zigzag_direct,     64*sizeof(uint8_t));
3597
        memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
3598
        memcpy(h->field_scan8x8,        field_scan8x8,        64*sizeof(uint8_t));
3599
        memcpy(h->field_scan8x8_cavlc,  field_scan8x8_cavlc,  64*sizeof(uint8_t));
3600
    }else{
3601
        for(i=0; i<64; i++){
3602
#define T(x) (x>>3) | ((x&7)<<3)
3603
            h->zigzag_scan8x8[i]       = T(ff_zigzag_direct[i]);
3604
            h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
3605
            h->field_scan8x8[i]        = T(field_scan8x8[i]);
3606
            h->field_scan8x8_cavlc[i]  = T(field_scan8x8_cavlc[i]);
3607
#undef T
3608
        }
3609
    }
3610
    if(h->sps.transform_bypass){ //FIXME same ugly
3611
        h->zigzag_scan_q0          = zigzag_scan;
3612
        h->zigzag_scan8x8_q0       = ff_zigzag_direct;
3613
        h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
3614
        h->field_scan_q0           = field_scan;
3615
        h->field_scan8x8_q0        = field_scan8x8;
3616
        h->field_scan8x8_cavlc_q0  = field_scan8x8_cavlc;
3617
    }else{
3618
        h->zigzag_scan_q0          = h->zigzag_scan;
3619
        h->zigzag_scan8x8_q0       = h->zigzag_scan8x8;
3620
        h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
3621
        h->field_scan_q0           = h->field_scan;
3622
        h->field_scan8x8_q0        = h->field_scan8x8;
3623
        h->field_scan8x8_cavlc_q0  = h->field_scan8x8_cavlc;
3624
    }
3625
}
3626

    
3627
static void field_end(H264Context *h){
3628
    MpegEncContext * const s = &h->s;
3629
    AVCodecContext * const avctx= s->avctx;
3630
    s->mb_y= 0;
3631

    
3632
    s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
3633
    s->current_picture_ptr->pict_type= s->pict_type;
3634

    
3635
    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
3636
        ff_vdpau_h264_set_reference_frames(s);
3637

    
3638
    if(!s->dropable) {
3639
        execute_ref_pic_marking(h, h->mmco, h->mmco_index);
3640
        h->prev_poc_msb= h->poc_msb;
3641
        h->prev_poc_lsb= h->poc_lsb;
3642
    }
3643
    h->prev_frame_num_offset= h->frame_num_offset;
3644
    h->prev_frame_num= h->frame_num;
3645

    
3646
    if (avctx->hwaccel) {
3647
        if (avctx->hwaccel->end_frame(avctx) < 0)
3648
            av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
3649
    }
3650

    
3651
    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
3652
        ff_vdpau_h264_picture_complete(s);
3653

    
3654
    /*
3655
     * FIXME: Error handling code does not seem to support interlaced
3656
     * when slices span multiple rows
3657
     * The ff_er_add_slice calls don't work right for bottom
3658
     * fields; they cause massive erroneous error concealing
3659
     * Error marking covers both fields (top and bottom).
3660
     * This causes a mismatched s->error_count
3661
     * and a bad error table. Further, the error count goes to
3662
     * INT_MAX when called for bottom field, because mb_y is
3663
     * past end by one (callers fault) and resync_mb_y != 0
3664
     * causes problems for the first MB line, too.
3665
     */
3666
    if (!FIELD_PICTURE)
3667
        ff_er_frame_end(s);
3668

    
3669
    MPV_frame_end(s);
3670

    
3671
    h->current_slice=0;
3672
}
3673

    
3674
/**
3675
 * Replicates H264 "master" context to thread contexts.
3676
 */
3677
static void clone_slice(H264Context *dst, H264Context *src)
3678
{
3679
    memcpy(dst->block_offset,     src->block_offset, sizeof(dst->block_offset));
3680
    dst->s.current_picture_ptr  = src->s.current_picture_ptr;
3681
    dst->s.current_picture      = src->s.current_picture;
3682
    dst->s.linesize             = src->s.linesize;
3683
    dst->s.uvlinesize           = src->s.uvlinesize;
3684
    dst->s.first_field          = src->s.first_field;
3685

    
3686
    dst->prev_poc_msb           = src->prev_poc_msb;
3687
    dst->prev_poc_lsb           = src->prev_poc_lsb;
3688
    dst->prev_frame_num_offset  = src->prev_frame_num_offset;
3689
    dst->prev_frame_num         = src->prev_frame_num;
3690
    dst->short_ref_count        = src->short_ref_count;
3691

    
3692
    memcpy(dst->short_ref,        src->short_ref,        sizeof(dst->short_ref));
3693
    memcpy(dst->long_ref,         src->long_ref,         sizeof(dst->long_ref));
3694
    memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
3695
    memcpy(dst->ref_list,         src->ref_list,         sizeof(dst->ref_list));
3696

    
3697
    memcpy(dst->dequant4_coeff,   src->dequant4_coeff,   sizeof(src->dequant4_coeff));
3698
    memcpy(dst->dequant8_coeff,   src->dequant8_coeff,   sizeof(src->dequant8_coeff));
3699
}
3700

    
3701
/**
3702
 * decodes a slice header.
3703
 * This will also call MPV_common_init() and frame_start() as needed.
3704
 *
3705
 * @param h h264context
3706
 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
3707
 *
3708
 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
3709
 */
3710
static int decode_slice_header(H264Context *h, H264Context *h0){
3711
    MpegEncContext * const s = &h->s;
3712
    MpegEncContext * const s0 = &h0->s;
3713
    unsigned int first_mb_in_slice;
3714
    unsigned int pps_id;
3715
    int num_ref_idx_active_override_flag;
3716
    unsigned int slice_type, tmp, i, j;
3717
    int default_ref_list_done = 0;
3718
    int last_pic_structure;
3719

    
3720
    s->dropable= h->nal_ref_idc == 0;
3721

    
3722
    if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
3723
        s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
3724
        s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
3725
    }else{
3726
        s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
3727
        s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
3728
    }
3729

    
3730
    first_mb_in_slice= get_ue_golomb(&s->gb);
3731

    
3732
    if(first_mb_in_slice == 0){ //FIXME better field boundary detection
3733
        if(h0->current_slice && FIELD_PICTURE){
3734
            field_end(h);
3735
        }
3736

    
3737
        h0->current_slice = 0;
3738
        if (!s0->first_field)
3739
            s->current_picture_ptr= NULL;
3740
    }
3741

    
3742
    slice_type= get_ue_golomb_31(&s->gb);
3743
    if(slice_type > 9){
3744
        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);
3745
        return -1;
3746
    }
3747
    if(slice_type > 4){
3748
        slice_type -= 5;
3749
        h->slice_type_fixed=1;
3750
    }else
3751
        h->slice_type_fixed=0;
3752

    
3753
    slice_type= golomb_to_pict_type[ slice_type ];
3754
    if (slice_type == FF_I_TYPE
3755
        || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
3756
        default_ref_list_done = 1;
3757
    }
3758
    h->slice_type= slice_type;
3759
    h->slice_type_nos= slice_type & 3;
3760

    
3761
    s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
3762
    if (s->pict_type == FF_B_TYPE && s0->last_picture_ptr == NULL) {
3763
        av_log(h->s.avctx, AV_LOG_ERROR,
3764
               "B picture before any references, skipping\n");
3765
        return -1;
3766
    }
3767

    
3768
    pps_id= get_ue_golomb(&s->gb);
3769
    if(pps_id>=MAX_PPS_COUNT){
3770
        av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
3771
        return -1;
3772
    }
3773
    if(!h0->pps_buffers[pps_id]) {
3774
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
3775
        return -1;
3776
    }
3777
    h->pps= *h0->pps_buffers[pps_id];
3778

    
3779
    if(!h0->sps_buffers[h->pps.sps_id]) {
3780
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
3781
        return -1;
3782
    }
3783
    h->sps = *h0->sps_buffers[h->pps.sps_id];
3784

    
3785
    if(h == h0 && h->dequant_coeff_pps != pps_id){
3786
        h->dequant_coeff_pps = pps_id;
3787
        init_dequant_tables(h);
3788
    }
3789

    
3790
    s->mb_width= h->sps.mb_width;
3791
    s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
3792

    
3793
    h->b_stride=  s->mb_width*4;
3794
    h->b8_stride= s->mb_width*2;
3795

    
3796
    s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
3797
    if(h->sps.frame_mbs_only_flag)
3798
        s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
3799
    else
3800
        s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
3801

    
3802
    if (s->context_initialized
3803
        && (   s->width != s->avctx->width || s->height != s->avctx->height)) {
3804
        if(h != h0)
3805
            return -1;   // width / height changed during parallelized decoding
3806
        free_tables(h);
3807
        flush_dpb(s->avctx);
3808
        MPV_common_end(s);
3809
    }
3810
    if (!s->context_initialized) {
3811
        if(h != h0)
3812
            return -1;  // we cant (re-)initialize context during parallel decoding
3813
        if (MPV_common_init(s) < 0)
3814
            return -1;
3815
        s->first_field = 0;
3816
        h->prev_interlaced_frame = 1;
3817

    
3818
        init_scan_tables(h);
3819
        alloc_tables(h);
3820

    
3821
        for(i = 1; i < s->avctx->thread_count; i++) {
3822
            H264Context *c;
3823
            c = h->thread_context[i] = av_malloc(sizeof(H264Context));
3824
            memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
3825
            memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
3826
            c->sps = h->sps;
3827
            c->pps = h->pps;
3828
            init_scan_tables(c);
3829
            clone_tables(c, h);
3830
        }
3831

    
3832
        for(i = 0; i < s->avctx->thread_count; i++)
3833
            if(context_init(h->thread_context[i]) < 0)
3834
                return -1;
3835

    
3836
        s->avctx->width = s->width;
3837
        s->avctx->height = s->height;
3838
        s->avctx->sample_aspect_ratio= h->sps.sar;
3839
        if(!s->avctx->sample_aspect_ratio.den)
3840
            s->avctx->sample_aspect_ratio.den = 1;
3841

    
3842
        if(h->sps.timing_info_present_flag){
3843
            s->avctx->time_base= (AVRational){h->sps.num_units_in_tick, h->sps.time_scale};
3844
            if(h->x264_build > 0 && h->x264_build < 44)
3845
                s->avctx->time_base.den *= 2;
3846
            av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
3847
                      s->avctx->time_base.num, s->avctx->time_base.den, 1<<30);
3848
        }
3849
    }
3850

    
3851
    h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
3852

    
3853
    h->mb_mbaff = 0;
3854
    h->mb_aff_frame = 0;
3855
    last_pic_structure = s0->picture_structure;
3856
    if(h->sps.frame_mbs_only_flag){
3857
        s->picture_structure= PICT_FRAME;
3858
    }else{
3859
        if(get_bits1(&s->gb)) { //field_pic_flag
3860
            s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
3861
        } else {
3862
            s->picture_structure= PICT_FRAME;
3863
            h->mb_aff_frame = h->sps.mb_aff;
3864
        }
3865
    }
3866
    h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
3867

    
3868
    if(h0->current_slice == 0){
3869
        while(h->frame_num !=  h->prev_frame_num &&
3870
              h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
3871
            av_log(NULL, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
3872
            if (frame_start(h) < 0)
3873
                return -1;
3874
            h->prev_frame_num++;
3875
            h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
3876
            s->current_picture_ptr->frame_num= h->prev_frame_num;
3877
            execute_ref_pic_marking(h, NULL, 0);
3878
        }
3879

    
3880
        /* See if we have a decoded first field looking for a pair... */
3881
        if (s0->first_field) {
3882
            assert(s0->current_picture_ptr);
3883
            assert(s0->current_picture_ptr->data[0]);
3884
            assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
3885

    
3886
            /* figure out if we have a complementary field pair */
3887
            if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
3888
                /*
3889
                 * Previous field is unmatched. Don't display it, but let it
3890
                 * remain for reference if marked as such.
3891
                 */
3892
                s0->current_picture_ptr = NULL;
3893
                s0->first_field = FIELD_PICTURE;
3894

    
3895
            } else {
3896
                if (h->nal_ref_idc &&
3897
                        s0->current_picture_ptr->reference &&
3898
                        s0->current_picture_ptr->frame_num != h->frame_num) {
3899
                    /*
3900
                     * This and previous field were reference, but had
3901
                     * different frame_nums. Consider this field first in
3902
                     * pair. Throw away previous field except for reference
3903
                     * purposes.
3904
                     */
3905
                    s0->first_field = 1;
3906
                    s0->current_picture_ptr = NULL;
3907

    
3908
                } else {
3909
                    /* Second field in complementary pair */
3910
                    s0->first_field = 0;
3911
                }
3912
            }
3913

    
3914
        } else {
3915
            /* Frame or first field in a potentially complementary pair */
3916
            assert(!s0->current_picture_ptr);
3917
            s0->first_field = FIELD_PICTURE;
3918
        }
3919

    
3920
        if((!FIELD_PICTURE || s0->first_field) && frame_start(h) < 0) {
3921
            s0->first_field = 0;
3922
            return -1;
3923
        }
3924
    }
3925
    if(h != h0)
3926
        clone_slice(h, h0);
3927

    
3928
    s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
3929

    
3930
    assert(s->mb_num == s->mb_width * s->mb_height);
3931
    if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
3932
       first_mb_in_slice                    >= s->mb_num){
3933
        av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
3934
        return -1;
3935
    }
3936
    s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
3937
    s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
3938
    if (s->picture_structure == PICT_BOTTOM_FIELD)
3939
        s->resync_mb_y = s->mb_y = s->mb_y + 1;
3940
    assert(s->mb_y < s->mb_height);
3941

    
3942
    if(s->picture_structure==PICT_FRAME){
3943
        h->curr_pic_num=   h->frame_num;
3944
        h->max_pic_num= 1<< h->sps.log2_max_frame_num;
3945
    }else{
3946
        h->curr_pic_num= 2*h->frame_num + 1;
3947
        h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
3948
    }
3949

    
3950
    if(h->nal_unit_type == NAL_IDR_SLICE){
3951
        get_ue_golomb(&s->gb); /* idr_pic_id */
3952
    }
3953

    
3954
    if(h->sps.poc_type==0){
3955
        h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
3956

    
3957
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
3958
            h->delta_poc_bottom= get_se_golomb(&s->gb);
3959
        }
3960
    }
3961

    
3962
    if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
3963
        h->delta_poc[0]= get_se_golomb(&s->gb);
3964

    
3965
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
3966
            h->delta_poc[1]= get_se_golomb(&s->gb);
3967
    }
3968

    
3969
    init_poc(h);
3970

    
3971
    if(h->pps.redundant_pic_cnt_present){
3972
        h->redundant_pic_count= get_ue_golomb(&s->gb);
3973
    }
3974

    
3975
    //set defaults, might be overridden a few lines later
3976
    h->ref_count[0]= h->pps.ref_count[0];
3977
    h->ref_count[1]= h->pps.ref_count[1];
3978

    
3979
    if(h->slice_type_nos != FF_I_TYPE){
3980
        if(h->slice_type_nos == FF_B_TYPE){
3981
            h->direct_spatial_mv_pred= get_bits1(&s->gb);
3982
        }
3983
        num_ref_idx_active_override_flag= get_bits1(&s->gb);
3984

    
3985
        if(num_ref_idx_active_override_flag){
3986
            h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
3987
            if(h->slice_type_nos==FF_B_TYPE)
3988
                h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
3989

    
3990
            if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
3991
                av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
3992
                h->ref_count[0]= h->ref_count[1]= 1;
3993
                return -1;
3994
            }
3995
        }
3996
        if(h->slice_type_nos == FF_B_TYPE)
3997
            h->list_count= 2;
3998
        else
3999
            h->list_count= 1;
4000
    }else
4001
        h->list_count= 0;
4002

    
4003
    if(!default_ref_list_done){
4004
        fill_default_ref_list(h);
4005
    }
4006

    
4007
    if(h->slice_type_nos!=FF_I_TYPE && decode_ref_pic_list_reordering(h) < 0)
4008
        return -1;
4009

    
4010
    if(h->slice_type_nos!=FF_I_TYPE){
4011
        s->last_picture_ptr= &h->ref_list[0][0];
4012
        ff_copy_picture(&s->last_picture, s->last_picture_ptr);
4013
    }
4014
    if(h->slice_type_nos==FF_B_TYPE){
4015
        s->next_picture_ptr= &h->ref_list[1][0];
4016
        ff_copy_picture(&s->next_picture, s->next_picture_ptr);
4017
    }
4018

    
4019
    if(   (h->pps.weighted_pred          && h->slice_type_nos == FF_P_TYPE )
4020
       ||  (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
4021
        pred_weight_table(h);
4022
    else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE)
4023
        implicit_weight_table(h);
4024
    else {
4025
        h->use_weight = 0;
4026
        for (i = 0; i < 2; i++) {
4027
            h->luma_weight_flag[i]   = 0;
4028
            h->chroma_weight_flag[i] = 0;
4029
        }
4030
    }
4031

    
4032
    if(h->nal_ref_idc)
4033
        decode_ref_pic_marking(h0, &s->gb);
4034

    
4035
    if(FRAME_MBAFF)
4036
        fill_mbaff_ref_list(h);
4037

    
4038
    if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
4039
        direct_dist_scale_factor(h);
4040
    direct_ref_list_init(h);
4041

    
4042
    if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
4043
        tmp = get_ue_golomb_31(&s->gb);
4044
        if(tmp > 2){
4045
            av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
4046
            return -1;
4047
        }
4048
        h->cabac_init_idc= tmp;
4049
    }
4050

    
4051
    h->last_qscale_diff = 0;
4052
    tmp = h->pps.init_qp + get_se_golomb(&s->gb);
4053
    if(tmp>51){
4054
        av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
4055
        return -1;
4056
    }
4057
    s->qscale= tmp;
4058
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
4059
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
4060
    //FIXME qscale / qp ... stuff
4061
    if(h->slice_type == FF_SP_TYPE){
4062
        get_bits1(&s->gb); /* sp_for_switch_flag */
4063
    }
4064
    if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
4065
        get_se_golomb(&s->gb); /* slice_qs_delta */
4066
    }
4067

    
4068
    h->deblocking_filter = 1;
4069
    h->slice_alpha_c0_offset = 0;
4070
    h->slice_beta_offset = 0;
4071
    if( h->pps.deblocking_filter_parameters_present ) {
4072
        tmp= get_ue_golomb_31(&s->gb);
4073
        if(tmp > 2){
4074
            av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
4075
            return -1;
4076
        }
4077
        h->deblocking_filter= tmp;
4078
        if(h->deblocking_filter < 2)
4079
            h->deblocking_filter^= 1; // 1<->0
4080

    
4081
        if( h->deblocking_filter ) {
4082
            h->slice_alpha_c0_offset = get_se_golomb(&s->gb) << 1;
4083
            h->slice_beta_offset = get_se_golomb(&s->gb) << 1;
4084
        }
4085
    }
4086

    
4087
    if(   s->avctx->skip_loop_filter >= AVDISCARD_ALL
4088
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
4089
       ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR  && h->slice_type_nos == FF_B_TYPE)
4090
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
4091
        h->deblocking_filter= 0;
4092

    
4093
    if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
4094
        if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
4095
            /* Cheat slightly for speed:
4096
               Do not bother to deblock across slices. */
4097
            h->deblocking_filter = 2;
4098
        } else {
4099
            h0->max_contexts = 1;
4100
            if(!h0->single_decode_warning) {
4101
                av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
4102
                h0->single_decode_warning = 1;
4103
            }
4104
            if(h != h0)
4105
                return 1; // deblocking switched inside frame
4106
        }
4107
    }
4108

    
4109
#if 0 //FMO
4110
    if( h->pps.num_slice_groups > 1  && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
4111
        slice_group_change_cycle= get_bits(&s->gb, ?);
4112
#endif
4113

    
4114
    h0->last_slice_type = slice_type;
4115
    h->slice_num = ++h0->current_slice;
4116
    if(h->slice_num >= MAX_SLICES){
4117
        av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
4118
    }
4119

    
4120
    for(j=0; j<2; j++){
4121
        int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
4122
        ref2frm[0]=
4123
        ref2frm[1]= -1;
4124
        for(i=0; i<16; i++)
4125
            ref2frm[i+2]= 4*h->ref_list[j][i].frame_num
4126
                          +(h->ref_list[j][i].reference&3);
4127
        ref2frm[18+0]=
4128
        ref2frm[18+1]= -1;
4129
        for(i=16; i<48; i++)
4130
            ref2frm[i+4]= 4*h->ref_list[j][i].frame_num
4131
                          +(h->ref_list[j][i].reference&3);
4132
    }
4133

    
4134
    h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
4135
    h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
4136

    
4137
    s->avctx->refs= h->sps.ref_frame_count;
4138

    
4139
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
4140
        av_log(h->s.avctx, AV_LOG_DEBUG, "slice:%d %s mb:%d %c%s%s pps:%u frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d:%d:%d weight:%d%s %s\n",
4141
               h->slice_num,
4142
               (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
4143
               first_mb_in_slice,
4144
               av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
4145
               pps_id, h->frame_num,
4146
               s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
4147
               h->ref_count[0], h->ref_count[1],
4148
               s->qscale,
4149
               h->deblocking_filter, h->slice_alpha_c0_offset/2, h->slice_beta_offset/2,
4150
               h->use_weight,
4151
               h->use_weight==1 && h->use_weight_chroma ? "c" : "",
4152
               h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
4153
               );
4154
    }
4155

    
4156
    return 0;
4157
}
4158

    
4159
/**
4160
 *
4161
 */
4162
static inline int get_level_prefix(GetBitContext *gb){
4163
    unsigned int buf;
4164
    int log;
4165

    
4166
    OPEN_READER(re, gb);
4167
    UPDATE_CACHE(re, gb);
4168
    buf=GET_CACHE(re, gb);
4169

    
4170
    log= 32 - av_log2(buf);
4171
#ifdef TRACE
4172
    print_bin(buf>>(32-log), log);
4173
    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__);
4174
#endif
4175

    
4176
    LAST_SKIP_BITS(re, gb, log);
4177
    CLOSE_READER(re, gb);
4178

    
4179
    return log-1;
4180
}
4181

    
4182
static inline int get_dct8x8_allowed(H264Context *h){
4183
    if(h->sps.direct_8x8_inference_flag)
4184
        return !(*(uint64_t*)h->sub_mb_type & ((MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8                )*0x0001000100010001ULL));
4185
    else
4186
        return !(*(uint64_t*)h->sub_mb_type & ((MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8|MB_TYPE_DIRECT2)*0x0001000100010001ULL));
4187
}
4188

    
4189
/**
4190
 * decodes a residual block.
4191
 * @param n block index
4192
 * @param scantable scantable
4193
 * @param max_coeff number of coefficients in the block
4194
 * @return <0 if an error occurred
4195
 */
4196
static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff){
4197
    MpegEncContext * const s = &h->s;
4198
    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};
4199
    int level[16];
4200
    int zeros_left, coeff_num, coeff_token, total_coeff, i, j, trailing_ones, run_before;
4201

    
4202
    //FIXME put trailing_onex into the context
4203

    
4204
    if(n == CHROMA_DC_BLOCK_INDEX){
4205
        coeff_token= get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1);
4206
        total_coeff= coeff_token>>2;
4207
    }else{
4208
        if(n == LUMA_DC_BLOCK_INDEX){
4209
            total_coeff= pred_non_zero_count(h, 0);
4210
            coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
4211
            total_coeff= coeff_token>>2;
4212
        }else{
4213
            total_coeff= pred_non_zero_count(h, n);
4214
            coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
4215
            total_coeff= coeff_token>>2;
4216
            h->non_zero_count_cache[ scan8[n] ]= total_coeff;
4217
        }
4218
    }
4219

    
4220
    //FIXME set last_non_zero?
4221

    
4222
    if(total_coeff==0)
4223
        return 0;
4224
    if(total_coeff > (unsigned)max_coeff) {
4225
        av_log(h->s.avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", s->mb_x, s->mb_y, total_coeff);
4226
        return -1;
4227
    }
4228

    
4229
    trailing_ones= coeff_token&3;
4230
    tprintf(h->s.avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff);
4231
    assert(total_coeff<=16);
4232

    
4233
    i = show_bits(gb, 3);
4234
    skip_bits(gb, trailing_ones);
4235
    level[0] = 1-((i&4)>>1);
4236
    level[1] = 1-((i&2)   );
4237
    level[2] = 1-((i&1)<<1);
4238

    
4239
    if(trailing_ones<total_coeff) {
4240
        int mask, prefix;
4241
        int suffix_length = total_coeff > 10 && trailing_ones < 3;
4242
        int bitsi= show_bits(gb, LEVEL_TAB_BITS);
4243
        int level_code= cavlc_level_tab[suffix_length][bitsi][0];
4244

    
4245
        skip_bits(gb, cavlc_level_tab[suffix_length][bitsi][1]);
4246
        if(level_code >= 100){
4247
            prefix= level_code - 100;
4248
            if(prefix == LEVEL_TAB_BITS)
4249
                prefix += get_level_prefix(gb);
4250

    
4251
            //first coefficient has suffix_length equal to 0 or 1
4252
            if(prefix<14){ //FIXME try to build a large unified VLC table for all this
4253
                if(suffix_length)
4254
                    level_code= (prefix<<1) + get_bits1(gb); //part
4255
                else
4256
                    level_code= prefix; //part
4257
            }else if(prefix==14){
4258
                if(suffix_length)
4259
                    level_code= (prefix<<1) + get_bits1(gb); //part
4260
                else
4261
                    level_code= prefix + get_bits(gb, 4); //part
4262
            }else{
4263
                level_code= 30 + get_bits(gb, prefix-3); //part
4264
                if(prefix>=16)
4265
                    level_code += (1<<(prefix-3))-4096;
4266
            }
4267

    
4268
            if(trailing_ones < 3) level_code += 2;
4269

    
4270
            suffix_length = 2;
4271
            mask= -(level_code&1);
4272
            level[trailing_ones]= (((2+level_code)>>1) ^ mask) - mask;
4273
        }else{
4274
            if(trailing_ones < 3) level_code += (level_code>>31)|1;
4275

    
4276
            suffix_length = 1;
4277
            if(level_code + 3U > 6U)
4278
                suffix_length++;
4279
            level[trailing_ones]= level_code;
4280
        }
4281

    
4282
        //remaining coefficients have suffix_length > 0
4283
        for(i=trailing_ones+1;i<total_coeff;i++) {
4284
            static const unsigned int suffix_limit[7] = {0,3,6,12,24,48,INT_MAX };
4285
            int bitsi= show_bits(gb, LEVEL_TAB_BITS);
4286
            level_code= cavlc_level_tab[suffix_length][bitsi][0];
4287

    
4288
            skip_bits(gb, cavlc_level_tab[suffix_length][bitsi][1]);
4289
            if(level_code >= 100){
4290
                prefix= level_code - 100;
4291
                if(prefix == LEVEL_TAB_BITS){
4292
                    prefix += get_level_prefix(gb);
4293
                }
4294
                if(prefix<15){
4295
                    level_code = (prefix<<suffix_length) + get_bits(gb, suffix_length);
4296
                }else{
4297
                    level_code = (15<<suffix_length) + get_bits(gb, prefix-3);
4298
                    if(prefix>=16)
4299
                        level_code += (1<<(prefix-3))-4096;
4300
                }
4301
                mask= -(level_code&1);
4302
                level_code= (((2+level_code)>>1) ^ mask) - mask;
4303
            }
4304
            level[i]= level_code;
4305

    
4306
            if(suffix_limit[suffix_length] + level_code > 2U*suffix_limit[suffix_length])
4307
                suffix_length++;
4308
        }
4309
    }
4310

    
4311
    if(total_coeff == max_coeff)
4312
        zeros_left=0;
4313
    else{
4314
        if(n == CHROMA_DC_BLOCK_INDEX)
4315
            zeros_left= get_vlc2(gb, chroma_dc_total_zeros_vlc[ total_coeff-1 ].table, CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1);
4316
        else
4317
            zeros_left= get_vlc2(gb, total_zeros_vlc[ total_coeff-1 ].table, TOTAL_ZEROS_VLC_BITS, 1);
4318
    }
4319

    
4320
    coeff_num = zeros_left + total_coeff - 1;
4321
    j = scantable[coeff_num];
4322
    if(n > 24){
4323
        block[j] = level[0];
4324
        for(i=1;i<total_coeff;i++) {
4325
            if(zeros_left <= 0)
4326
                run_before = 0;
4327
            else if(zeros_left < 7){
4328
                run_before= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
4329
            }else{
4330
                run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
4331
            }
4332
            zeros_left -= run_before;
4333
            coeff_num -= 1 + run_before;
4334
            j= scantable[ coeff_num ];
4335

    
4336
            block[j]= level[i];
4337
        }
4338
    }else{
4339
        block[j] = (level[0] * qmul[j] + 32)>>6;
4340
        for(i=1;i<total_coeff;i++) {
4341
            if(zeros_left <= 0)
4342
                run_before = 0;
4343
            else if(zeros_left < 7){
4344
                run_before= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
4345
            }else{
4346
                run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
4347
            }
4348
            zeros_left -= run_before;
4349
            coeff_num -= 1 + run_before;
4350
            j= scantable[ coeff_num ];
4351

    
4352
            block[j]= (level[i] * qmul[j] + 32)>>6;
4353
        }
4354
    }
4355

    
4356
    if(zeros_left<0){
4357
        av_log(h->s.avctx, AV_LOG_ERROR, "negative number of zero coeffs at %d %d\n", s->mb_x, s->mb_y);
4358
        return -1;
4359
    }
4360

    
4361
    return 0;
4362
}
4363

    
4364
static void predict_field_decoding_flag(H264Context *h){
4365
    MpegEncContext * const s = &h->s;
4366
    const int mb_xy= h->mb_xy;
4367
    int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
4368
                ? s->current_picture.mb_type[mb_xy-1]
4369
                : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
4370
                ? s->current_picture.mb_type[mb_xy-s->mb_stride]
4371
                : 0;
4372
    h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
4373
}
4374

    
4375
/**
4376
 * decodes a P_SKIP or B_SKIP macroblock
4377
 */
4378
static void decode_mb_skip(H264Context *h){
4379
    MpegEncContext * const s = &h->s;
4380
    const int mb_xy= h->mb_xy;
4381
    int mb_type=0;
4382

    
4383
    memset(h->non_zero_count[mb_xy], 0, 16);
4384
    memset(h->non_zero_count_cache + 8, 0, 8*5); //FIXME ugly, remove pfui
4385

    
4386
    if(MB_FIELD)
4387
        mb_type|= MB_TYPE_INTERLACED;
4388

    
4389
    if( h->slice_type_nos == FF_B_TYPE )
4390
    {
4391
        // just for fill_caches. pred_direct_motion will set the real mb_type
4392
        mb_type|= MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2|MB_TYPE_SKIP;
4393

    
4394
        fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ...
4395
        pred_direct_motion(h, &mb_type);
4396
        mb_type|= MB_TYPE_SKIP;
4397
    }
4398
    else
4399
    {
4400
        int mx, my;
4401
        mb_type|= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P1L0|MB_TYPE_SKIP;
4402

    
4403
        fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ...
4404
        pred_pskip_motion(h, &mx, &my);
4405
        fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);
4406
        fill_rectangle(  h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mx,my), 4);
4407
    }
4408

    
4409
    write_back_motion(h, mb_type);
4410
    s->current_picture.mb_type[mb_xy]= mb_type;
4411
    s->current_picture.qscale_table[mb_xy]= s->qscale;
4412
    h->slice_table[ mb_xy ]= h->slice_num;
4413
    h->prev_mb_skipped= 1;
4414
}
4415

    
4416
/**
4417
 * decodes a macroblock
4418
 * @returns 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
4419
 */
4420
static int decode_mb_cavlc(H264Context *h){
4421
    MpegEncContext * const s = &h->s;
4422
    int mb_xy;
4423
    int partition_count;
4424
    unsigned int mb_type, cbp;
4425
    int dct8x8_allowed= h->pps.transform_8x8_mode;
4426

    
4427
    mb_xy = h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;
4428

    
4429
    tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
4430
    cbp = 0; /* avoid warning. FIXME: find a solution without slowing
4431
                down the code */
4432
    if(h->slice_type_nos != FF_I_TYPE){
4433
        if(s->mb_skip_run==-1)
4434
            s->mb_skip_run= get_ue_golomb(&s->gb);
4435

    
4436
        if (s->mb_skip_run--) {
4437
            if(FRAME_MBAFF && (s->mb_y&1) == 0){
4438
                if(s->mb_skip_run==0)
4439
                    h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb);
4440
                else
4441
                    predict_field_decoding_flag(h);
4442
            }
4443
            decode_mb_skip(h);
4444
            return 0;
4445
        }
4446
    }
4447
    if(FRAME_MBAFF){
4448
        if( (s->mb_y&1) == 0 )
4449
            h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb);
4450
    }
4451

    
4452
    h->prev_mb_skipped= 0;
4453

    
4454
    mb_type= get_ue_golomb(&s->gb);
4455
    if(h->slice_type_nos == FF_B_TYPE){
4456
        if(mb_type < 23){
4457
            partition_count= b_mb_type_info[mb_type].partition_count;
4458
            mb_type=         b_mb_type_info[mb_type].type;
4459
        }else{
4460
            mb_type -= 23;
4461
            goto decode_intra_mb;
4462
        }
4463
    }else if(h->slice_type_nos == FF_P_TYPE){
4464
        if(mb_type < 5){
4465
            partition_count= p_mb_type_info[mb_type].partition_count;
4466
            mb_type=         p_mb_type_info[mb_type].type;
4467
        }else{
4468
            mb_type -= 5;
4469
            goto decode_intra_mb;