Statistics
| Branch: | Revision:

ffmpeg / libavcodec / h264.c @ b735aeea

History | View | Annotate | Download (306 KB)

1
/*
2
 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3
 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4
 *
5
 * This file is part of FFmpeg.
6
 *
7
 * FFmpeg is free software; you can redistribute it and/or
8
 * modify it under the terms of the GNU Lesser General Public
9
 * License as published by the Free Software Foundation; either
10
 * version 2.1 of the License, or (at your option) any later version.
11
 *
12
 * FFmpeg is distributed in the hope that it will be useful,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * Lesser General Public License for more details.
16
 *
17
 * You should have received a copy of the GNU Lesser General Public
18
 * License along with FFmpeg; if not, write to the Free Software
19
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20
 */
21

    
22
/**
23
 * @file h264.c
24
 * H.264 / AVC / MPEG4 part10 codec.
25
 * @author Michael Niedermayer <michaelni@gmx.at>
26
 */
27

    
28
#include "dsputil.h"
29
#include "avcodec.h"
30
#include "mpegvideo.h"
31
#include "h264.h"
32
#include "h264data.h"
33
#include "h264_parser.h"
34
#include "golomb.h"
35
#include "rectangle.h"
36

    
37
#include "cabac.h"
38
#ifdef ARCH_X86
39
#include "i386/h264_i386.h"
40
#endif
41

    
42
//#undef NDEBUG
43
#include <assert.h>
44

    
45
/**
46
 * Value of Picture.reference when Picture is not a reference picture, but
47
 * is held for delayed output.
48
 */
49
#define DELAYED_PIC_REF 4
50

    
51
static VLC coeff_token_vlc[4];
52
static VLC_TYPE coeff_token_vlc_tables[520+332+280+256][2];
53
static const int coeff_token_vlc_tables_size[4]={520,332,280,256};
54

    
55
static VLC chroma_dc_coeff_token_vlc;
56
static VLC_TYPE chroma_dc_coeff_token_vlc_table[256][2];
57
static const int chroma_dc_coeff_token_vlc_table_size = 256;
58

    
59
static VLC total_zeros_vlc[15];
60
static VLC_TYPE total_zeros_vlc_tables[15][512][2];
61
static const int total_zeros_vlc_tables_size = 512;
62

    
63
static VLC chroma_dc_total_zeros_vlc[3];
64
static VLC_TYPE chroma_dc_total_zeros_vlc_tables[3][8][2];
65
static const int chroma_dc_total_zeros_vlc_tables_size = 8;
66

    
67
static VLC run_vlc[6];
68
static VLC_TYPE run_vlc_tables[6][8][2];
69
static const int run_vlc_tables_size = 8;
70

    
71
static VLC run7_vlc;
72
static VLC_TYPE run7_vlc_table[96][2];
73
static const int run7_vlc_table_size = 96;
74

    
75
static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp);
76
static void svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp, int dc);
77
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);
78
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);
79
static Picture * remove_long(H264Context *h, int i, int ref_mask);
80

    
81
static av_always_inline uint32_t pack16to32(int a, int b){
82
#ifdef WORDS_BIGENDIAN
83
   return (b&0xFFFF) + (a<<16);
84
#else
85
   return (a&0xFFFF) + (b<<16);
86
#endif
87
}
88

    
89
static const uint8_t rem6[52]={
90
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,
91
};
92

    
93
static const uint8_t div6[52]={
94
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,
95
};
96

    
97
static const int left_block_options[4][8]={
98
    {0,1,2,3,7,10,8,11},
99
    {2,2,3,3,8,11,8,11},
100
    {0,0,1,1,7,10,7,10},
101
    {0,2,0,2,7,10,7,10}
102
};
103

    
104
static void fill_caches(H264Context *h, int mb_type, int for_deblock){
105
    MpegEncContext * const s = &h->s;
106
    const int mb_xy= h->mb_xy;
107
    int topleft_xy, top_xy, topright_xy, left_xy[2];
108
    int topleft_type, top_type, topright_type, left_type[2];
109
    int * left_block;
110
    int topleft_partition= -1;
111
    int i;
112

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

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

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

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

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

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

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

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

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

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

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

    
289

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

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

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

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

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

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

    
323
    }
324

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    
638
    return mode;
639
}
640

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

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

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

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

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

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

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

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

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

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

    
690
    return i&31;
691
}
692

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    
894
    return;
895
}
896

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

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

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

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

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

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

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

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

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

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

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

    
978
    cur->mbaff= FRAME_MBAFF;
979

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    
1433
    *dst_length= di;
1434
    *consumed= si + 1;//+1 for the header
1435
//FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
1436
    return dst;
1437
}
1438

    
1439
/**
1440
 * identifies the exact end of the bitstream
1441
 * @return the length of the trailing, or 0 if damaged
1442
 */
1443
static int decode_rbsp_trailing(H264Context *h, const uint8_t *src){
1444
    int v= *src;
1445
    int r;
1446

    
1447
    tprintf(h->s.avctx, "rbsp trailing %X\n", v);
1448

    
1449
    for(r=1; r<9; r++){
1450
        if(v&1) return r;
1451
        v>>=1;
1452
    }
1453
    return 0;
1454
}
1455

    
1456
/**
1457
 * IDCT transforms the 16 dc values and dequantizes them.
1458
 * @param qp quantization parameter
1459
 */
1460
static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
1461
#define stride 16
1462
    int i;
1463
    int temp[16]; //FIXME check if this is a good idea
1464
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
1465
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1466

    
1467
//memset(block, 64, 2*256);
1468
//return;
1469
    for(i=0; i<4; i++){
1470
        const int offset= y_offset[i];
1471
        const int z0= block[offset+stride*0] + block[offset+stride*4];
1472
        const int z1= block[offset+stride*0] - block[offset+stride*4];
1473
        const int z2= block[offset+stride*1] - block[offset+stride*5];
1474
        const int z3= block[offset+stride*1] + block[offset+stride*5];
1475

    
1476
        temp[4*i+0]= z0+z3;
1477
        temp[4*i+1]= z1+z2;
1478
        temp[4*i+2]= z1-z2;
1479
        temp[4*i+3]= z0-z3;
1480
    }
1481

    
1482
    for(i=0; i<4; i++){
1483
        const int offset= x_offset[i];
1484
        const int z0= temp[4*0+i] + temp[4*2+i];
1485
        const int z1= temp[4*0+i] - temp[4*2+i];
1486
        const int z2= temp[4*1+i] - temp[4*3+i];
1487
        const int z3= temp[4*1+i] + temp[4*3+i];
1488

    
1489
        block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual
1490
        block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
1491
        block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
1492
        block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
1493
    }
1494
}
1495

    
1496
#if 0
1497
/**
1498
 * DCT transforms the 16 dc values.
1499
 * @param qp quantization parameter ??? FIXME
1500
 */
1501
static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
1502
//    const int qmul= dequant_coeff[qp][0];
1503
    int i;
1504
    int temp[16]; //FIXME check if this is a good idea
1505
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
1506
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1507

1508
    for(i=0; i<4; i++){
1509
        const int offset= y_offset[i];
1510
        const int z0= block[offset+stride*0] + block[offset+stride*4];
1511
        const int z1= block[offset+stride*0] - block[offset+stride*4];
1512
        const int z2= block[offset+stride*1] - block[offset+stride*5];
1513
        const int z3= block[offset+stride*1] + block[offset+stride*5];
1514

1515
        temp[4*i+0]= z0+z3;
1516
        temp[4*i+1]= z1+z2;
1517
        temp[4*i+2]= z1-z2;
1518
        temp[4*i+3]= z0-z3;
1519
    }
1520

1521
    for(i=0; i<4; i++){
1522
        const int offset= x_offset[i];
1523
        const int z0= temp[4*0+i] + temp[4*2+i];
1524
        const int z1= temp[4*0+i] - temp[4*2+i];
1525
        const int z2= temp[4*1+i] - temp[4*3+i];
1526
        const int z3= temp[4*1+i] + temp[4*3+i];
1527

1528
        block[stride*0 +offset]= (z0 + z3)>>1;
1529
        block[stride*2 +offset]= (z1 + z2)>>1;
1530
        block[stride*8 +offset]= (z1 - z2)>>1;
1531
        block[stride*10+offset]= (z0 - z3)>>1;
1532
    }
1533
}
1534
#endif
1535

    
1536
#undef xStride
1537
#undef stride
1538

    
1539
static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
1540
    const int stride= 16*2;
1541
    const int xStride= 16;
1542
    int a,b,c,d,e;
1543

    
1544
    a= block[stride*0 + xStride*0];
1545
    b= block[stride*0 + xStride*1];
1546
    c= block[stride*1 + xStride*0];
1547
    d= block[stride*1 + xStride*1];
1548

    
1549
    e= a-b;
1550
    a= a+b;
1551
    b= c-d;
1552
    c= c+d;
1553

    
1554
    block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
1555
    block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
1556
    block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
1557
    block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
1558
}
1559

    
1560
#if 0
1561
static void chroma_dc_dct_c(DCTELEM *block){
1562
    const int stride= 16*2;
1563
    const int xStride= 16;
1564
    int a,b,c,d,e;
1565

1566
    a= block[stride*0 + xStride*0];
1567
    b= block[stride*0 + xStride*1];
1568
    c= block[stride*1 + xStride*0];
1569
    d= block[stride*1 + xStride*1];
1570

1571
    e= a-b;
1572
    a= a+b;
1573
    b= c-d;
1574
    c= c+d;
1575

1576
    block[stride*0 + xStride*0]= (a+c);
1577
    block[stride*0 + xStride*1]= (e+b);
1578
    block[stride*1 + xStride*0]= (a-c);
1579
    block[stride*1 + xStride*1]= (e-b);
1580
}
1581
#endif
1582

    
1583
/**
1584
 * gets the chroma qp.
1585
 */
1586
static inline int get_chroma_qp(H264Context *h, int t, int qscale){
1587
    return h->pps.chroma_qp_table[t][qscale];
1588
}
1589

    
1590
//FIXME need to check that this does not overflow signed 32 bit for low qp, I am not sure, it's very close
1591
//FIXME check that gcc inlines this (and optimizes intra & separate_dc stuff away)
1592
static inline int quantize_c(DCTELEM *block, uint8_t *scantable, int qscale, int intra, int separate_dc){
1593
    int i;
1594
    const int * const quant_table= quant_coeff[qscale];
1595
    const int bias= intra ? (1<<QUANT_SHIFT)/3 : (1<<QUANT_SHIFT)/6;
1596
    const unsigned int threshold1= (1<<QUANT_SHIFT) - bias - 1;
1597
    const unsigned int threshold2= (threshold1<<1);
1598
    int last_non_zero;
1599

    
1600
    if(separate_dc){
1601
        if(qscale<=18){
1602
            //avoid overflows
1603
            const int dc_bias= intra ? (1<<(QUANT_SHIFT-2))/3 : (1<<(QUANT_SHIFT-2))/6;
1604
            const unsigned int dc_threshold1= (1<<(QUANT_SHIFT-2)) - dc_bias - 1;
1605
            const unsigned int dc_threshold2= (dc_threshold1<<1);
1606

    
1607
            int level= block[0]*quant_coeff[qscale+18][0];
1608
            if(((unsigned)(level+dc_threshold1))>dc_threshold2){
1609
                if(level>0){
1610
                    level= (dc_bias + level)>>(QUANT_SHIFT-2);
1611
                    block[0]= level;
1612
                }else{
1613
                    level= (dc_bias - level)>>(QUANT_SHIFT-2);
1614
                    block[0]= -level;
1615
                }
1616
//                last_non_zero = i;
1617
            }else{
1618
                block[0]=0;
1619
            }
1620
        }else{
1621
            const int dc_bias= intra ? (1<<(QUANT_SHIFT+1))/3 : (1<<(QUANT_SHIFT+1))/6;
1622
            const unsigned int dc_threshold1= (1<<(QUANT_SHIFT+1)) - dc_bias - 1;
1623
            const unsigned int dc_threshold2= (dc_threshold1<<1);
1624

    
1625
            int level= block[0]*quant_table[0];
1626
            if(((unsigned)(level+dc_threshold1))>dc_threshold2){
1627
                if(level>0){
1628
                    level= (dc_bias + level)>>(QUANT_SHIFT+1);
1629
                    block[0]= level;
1630
                }else{
1631
                    level= (dc_bias - level)>>(QUANT_SHIFT+1);
1632
                    block[0]= -level;
1633
                }
1634
//                last_non_zero = i;
1635
            }else{
1636
                block[0]=0;
1637
            }
1638
        }
1639
        last_non_zero= 0;
1640
        i=1;
1641
    }else{
1642
        last_non_zero= -1;
1643
        i=0;
1644
    }
1645

    
1646
    for(; i<16; i++){
1647
        const int j= scantable[i];
1648
        int level= block[j]*quant_table[j];
1649

    
1650
//        if(   bias+level >= (1<<(QMAT_SHIFT - 3))
1651
//           || bias-level >= (1<<(QMAT_SHIFT - 3))){
1652
        if(((unsigned)(level+threshold1))>threshold2){
1653
            if(level>0){
1654
                level= (bias + level)>>QUANT_SHIFT;
1655
                block[j]= level;
1656
            }else{
1657
                level= (bias - level)>>QUANT_SHIFT;
1658
                block[j]= -level;
1659
            }
1660
            last_non_zero = i;
1661
        }else{
1662
            block[j]=0;
1663
        }
1664
    }
1665

    
1666
    return last_non_zero;
1667
}
1668

    
1669
static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
1670
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1671
                           int src_x_offset, int src_y_offset,
1672
                           qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
1673
    MpegEncContext * const s = &h->s;
1674
    const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
1675
    int my=       h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
1676
    const int luma_xy= (mx&3) + ((my&3)<<2);
1677
    uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
1678
    uint8_t * src_cb, * src_cr;
1679
    int extra_width= h->emu_edge_width;
1680
    int extra_height= h->emu_edge_height;
1681
    int emu=0;
1682
    const int full_mx= mx>>2;
1683
    const int full_my= my>>2;
1684
    const int pic_width  = 16*s->mb_width;
1685
    const int pic_height = 16*s->mb_height >> MB_FIELD;
1686

    
1687
    if(!pic->data[0]) //FIXME this is unacceptable, some sensible error concealment must be done for missing reference frames
1688
        return;
1689

    
1690
    if(mx&7) extra_width -= 3;
1691
    if(my&7) extra_height -= 3;
1692

    
1693
    if(   full_mx < 0-extra_width
1694
       || full_my < 0-extra_height
1695
       || full_mx + 16/*FIXME*/ > pic_width + extra_width
1696
       || full_my + 16/*FIXME*/ > pic_height + extra_height){
1697
        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);
1698
            src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
1699
        emu=1;
1700
    }
1701

    
1702
    qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
1703
    if(!square){
1704
        qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
1705
    }
1706

    
1707
    if(ENABLE_GRAY && s->flags&CODEC_FLAG_GRAY) return;
1708

    
1709
    if(MB_FIELD){
1710
        // chroma offset when predicting from a field of opposite parity
1711
        my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
1712
        emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
1713
    }
1714
    src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
1715
    src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
1716

    
1717
    if(emu){
1718
        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);
1719
            src_cb= s->edge_emu_buffer;
1720
    }
1721
    chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
1722

    
1723
    if(emu){
1724
        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);
1725
            src_cr= s->edge_emu_buffer;
1726
    }
1727
    chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
1728
}
1729

    
1730
static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
1731
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1732
                           int x_offset, int y_offset,
1733
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1734
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
1735
                           int list0, int list1){
1736
    MpegEncContext * const s = &h->s;
1737
    qpel_mc_func *qpix_op=  qpix_put;
1738
    h264_chroma_mc_func chroma_op= chroma_put;
1739

    
1740
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
1741
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
1742
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
1743
    x_offset += 8*s->mb_x;
1744
    y_offset += 8*(s->mb_y >> MB_FIELD);
1745

    
1746
    if(list0){
1747
        Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
1748
        mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
1749
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
1750
                           qpix_op, chroma_op);
1751

    
1752
        qpix_op=  qpix_avg;
1753
        chroma_op= chroma_avg;
1754
    }
1755

    
1756
    if(list1){
1757
        Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
1758
        mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
1759
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
1760
                           qpix_op, chroma_op);
1761
    }
1762
}
1763

    
1764
static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
1765
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1766
                           int x_offset, int y_offset,
1767
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1768
                           h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
1769
                           h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
1770
                           int list0, int list1){
1771
    MpegEncContext * const s = &h->s;
1772

    
1773
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
1774
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
1775
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
1776
    x_offset += 8*s->mb_x;
1777
    y_offset += 8*(s->mb_y >> MB_FIELD);
1778

    
1779
    if(list0 && list1){
1780
        /* don't optimize for luma-only case, since B-frames usually
1781
         * use implicit weights => chroma too. */
1782
        uint8_t *tmp_cb = s->obmc_scratchpad;
1783
        uint8_t *tmp_cr = s->obmc_scratchpad + 8;
1784
        uint8_t *tmp_y  = s->obmc_scratchpad + 8*h->mb_uvlinesize;
1785
        int refn0 = h->ref_cache[0][ scan8[n] ];
1786
        int refn1 = h->ref_cache[1][ scan8[n] ];
1787

    
1788
        mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
1789
                    dest_y, dest_cb, dest_cr,
1790
                    x_offset, y_offset, qpix_put, chroma_put);
1791
        mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
1792
                    tmp_y, tmp_cb, tmp_cr,
1793
                    x_offset, y_offset, qpix_put, chroma_put);
1794

    
1795
        if(h->use_weight == 2){
1796
            int weight0 = h->implicit_weight[refn0][refn1];
1797
            int weight1 = 64 - weight0;
1798
            luma_weight_avg(  dest_y,  tmp_y,  h->  mb_linesize, 5, weight0, weight1, 0);
1799
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
1800
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
1801
        }else{
1802
            luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
1803
                            h->luma_weight[0][refn0], h->luma_weight[1][refn1],
1804
                            h->luma_offset[0][refn0] + h->luma_offset[1][refn1]);
1805
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1806
                            h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0],
1807
                            h->chroma_offset[0][refn0][0] + h->chroma_offset[1][refn1][0]);
1808
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1809
                            h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1],
1810
                            h->chroma_offset[0][refn0][1] + h->chroma_offset[1][refn1][1]);
1811
        }
1812
    }else{
1813
        int list = list1 ? 1 : 0;
1814
        int refn = h->ref_cache[list][ scan8[n] ];
1815
        Picture *ref= &h->ref_list[list][refn];
1816
        mc_dir_part(h, ref, n, square, chroma_height, delta, list,
1817
                    dest_y, dest_cb, dest_cr, x_offset, y_offset,
1818
                    qpix_put, chroma_put);
1819

    
1820
        luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
1821
                       h->luma_weight[list][refn], h->luma_offset[list][refn]);
1822
        if(h->use_weight_chroma){
1823
            chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1824
                             h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]);
1825
            chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1826
                             h->chroma_weight[list][refn][1], h->chroma_offset[list][refn][1]);
1827
        }
1828
    }
1829
}
1830

    
1831
static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
1832
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1833
                           int x_offset, int y_offset,
1834
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1835
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
1836
                           h264_weight_func *weight_op, h264_biweight_func *weight_avg,
1837
                           int list0, int list1){
1838
    if((h->use_weight==2 && list0 && list1
1839
        && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32))
1840
       || h->use_weight==1)
1841
        mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
1842
                         x_offset, y_offset, qpix_put, chroma_put,
1843
                         weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
1844
    else
1845
        mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
1846
                    x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
1847
}
1848

    
1849
static inline void prefetch_motion(H264Context *h, int list){
1850
    /* fetch pixels for estimated mv 4 macroblocks ahead
1851
     * optimized for 64byte cache lines */
1852
    MpegEncContext * const s = &h->s;
1853
    const int refn = h->ref_cache[list][scan8[0]];
1854
    if(refn >= 0){
1855
        const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
1856
        const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
1857
        uint8_t **src= h->ref_list[list][refn].data;
1858
        int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
1859
        s->dsp.prefetch(src[0]+off, s->linesize, 4);
1860
        off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
1861
        s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
1862
    }
1863
}
1864

    
1865
static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1866
                      qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
1867
                      qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
1868
                      h264_weight_func *weight_op, h264_biweight_func *weight_avg){
1869
    MpegEncContext * const s = &h->s;
1870
    const int mb_xy= h->mb_xy;
1871
    const int mb_type= s->current_picture.mb_type[mb_xy];
1872

    
1873
    assert(IS_INTER(mb_type));
1874

    
1875
    prefetch_motion(h, 0);
1876

    
1877
    if(IS_16X16(mb_type)){
1878
        mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
1879
                qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
1880
                &weight_op[0], &weight_avg[0],
1881
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1882
    }else if(IS_16X8(mb_type)){
1883
        mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
1884
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
1885
                &weight_op[1], &weight_avg[1],
1886
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1887
        mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
1888
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
1889
                &weight_op[1], &weight_avg[1],
1890
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
1891
    }else if(IS_8X16(mb_type)){
1892
        mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
1893
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1894
                &weight_op[2], &weight_avg[2],
1895
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1896
        mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
1897
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1898
                &weight_op[2], &weight_avg[2],
1899
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
1900
    }else{
1901
        int i;
1902

    
1903
        assert(IS_8X8(mb_type));
1904

    
1905
        for(i=0; i<4; i++){
1906
            const int sub_mb_type= h->sub_mb_type[i];
1907
            const int n= 4*i;
1908
            int x_offset= (i&1)<<2;
1909
            int y_offset= (i&2)<<1;
1910

    
1911
            if(IS_SUB_8X8(sub_mb_type)){
1912
                mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1913
                    qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1914
                    &weight_op[3], &weight_avg[3],
1915
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1916
            }else if(IS_SUB_8X4(sub_mb_type)){
1917
                mc_part(h, n  , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1918
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
1919
                    &weight_op[4], &weight_avg[4],
1920
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1921
                mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
1922
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
1923
                    &weight_op[4], &weight_avg[4],
1924
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1925
            }else if(IS_SUB_4X8(sub_mb_type)){
1926
                mc_part(h, n  , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1927
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1928
                    &weight_op[5], &weight_avg[5],
1929
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1930
                mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
1931
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1932
                    &weight_op[5], &weight_avg[5],
1933
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1934
            }else{
1935
                int j;
1936
                assert(IS_SUB_4X4(sub_mb_type));
1937
                for(j=0; j<4; j++){
1938
                    int sub_x_offset= x_offset + 2*(j&1);
1939
                    int sub_y_offset= y_offset +   (j&2);
1940
                    mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
1941
                        qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1942
                        &weight_op[6], &weight_avg[6],
1943
                        IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1944
                }
1945
            }
1946
        }
1947
    }
1948

    
1949
    prefetch_motion(h, 1);
1950
}
1951

    
1952
static av_cold void decode_init_vlc(void){
1953
    static int done = 0;
1954

    
1955
    if (!done) {
1956
        int i;
1957
        int offset;
1958
        done = 1;
1959

    
1960
        chroma_dc_coeff_token_vlc.table = chroma_dc_coeff_token_vlc_table;
1961
        chroma_dc_coeff_token_vlc.table_allocated = chroma_dc_coeff_token_vlc_table_size;
1962
        init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5,
1963
                 &chroma_dc_coeff_token_len [0], 1, 1,
1964
                 &chroma_dc_coeff_token_bits[0], 1, 1,
1965
                 INIT_VLC_USE_NEW_STATIC);
1966

    
1967
        offset = 0;
1968
        for(i=0; i<4; i++){
1969
            coeff_token_vlc[i].table = coeff_token_vlc_tables+offset;
1970
            coeff_token_vlc[i].table_allocated = coeff_token_vlc_tables_size[i];
1971
            init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17,
1972
                     &coeff_token_len [i][0], 1, 1,
1973
                     &coeff_token_bits[i][0], 1, 1,
1974
                     INIT_VLC_USE_NEW_STATIC);
1975
            offset += coeff_token_vlc_tables_size[i];
1976
        }
1977
        /*
1978
         * This is a one time safety check to make sure that
1979
         * the packed static coeff_token_vlc table sizes
1980
         * were initialized correctly.
1981
         */
1982
        assert(offset == FF_ARRAY_ELEMS(coeff_token_vlc_tables));
1983

    
1984
        for(i=0; i<3; i++){
1985
            chroma_dc_total_zeros_vlc[i].table = chroma_dc_total_zeros_vlc_tables[i];
1986
            chroma_dc_total_zeros_vlc[i].table_allocated = chroma_dc_total_zeros_vlc_tables_size;
1987
            init_vlc(&chroma_dc_total_zeros_vlc[i],
1988
                     CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4,
1989
                     &chroma_dc_total_zeros_len [i][0], 1, 1,
1990
                     &chroma_dc_total_zeros_bits[i][0], 1, 1,
1991
                     INIT_VLC_USE_NEW_STATIC);
1992
        }
1993
        for(i=0; i<15; i++){
1994
            total_zeros_vlc[i].table = total_zeros_vlc_tables[i];
1995
            total_zeros_vlc[i].table_allocated = total_zeros_vlc_tables_size;
1996
            init_vlc(&total_zeros_vlc[i],
1997
                     TOTAL_ZEROS_VLC_BITS, 16,
1998
                     &total_zeros_len [i][0], 1, 1,
1999
                     &total_zeros_bits[i][0], 1, 1,
2000
                     INIT_VLC_USE_NEW_STATIC);
2001
        }
2002

    
2003
        for(i=0; i<6; i++){
2004
            run_vlc[i].table = run_vlc_tables[i];
2005
            run_vlc[i].table_allocated = run_vlc_tables_size;
2006
            init_vlc(&run_vlc[i],
2007
                     RUN_VLC_BITS, 7,
2008
                     &run_len [i][0], 1, 1,
2009
                     &run_bits[i][0], 1, 1,
2010
                     INIT_VLC_USE_NEW_STATIC);
2011
        }
2012
        run7_vlc.table = run7_vlc_table,
2013
        run7_vlc.table_allocated = run7_vlc_table_size;
2014
        init_vlc(&run7_vlc, RUN7_VLC_BITS, 16,
2015
                 &run_len [6][0], 1, 1,
2016
                 &run_bits[6][0], 1, 1,
2017
                 INIT_VLC_USE_NEW_STATIC);
2018
    }
2019
}
2020

    
2021
static void free_tables(H264Context *h){
2022
    int i;
2023
    H264Context *hx;
2024
    av_freep(&h->intra4x4_pred_mode);
2025
    av_freep(&h->chroma_pred_mode_table);
2026
    av_freep(&h->cbp_table);
2027
    av_freep(&h->mvd_table[0]);
2028
    av_freep(&h->mvd_table[1]);
2029
    av_freep(&h->direct_table);
2030
    av_freep(&h->non_zero_count);
2031
    av_freep(&h->slice_table_base);
2032
    h->slice_table= NULL;
2033

    
2034
    av_freep(&h->mb2b_xy);
2035
    av_freep(&h->mb2b8_xy);
2036

    
2037
    for(i = 0; i < h->s.avctx->thread_count; i++) {
2038
        hx = h->thread_context[i];
2039
        if(!hx) continue;
2040
        av_freep(&hx->top_borders[1]);
2041
        av_freep(&hx->top_borders[0]);
2042
        av_freep(&hx->s.obmc_scratchpad);
2043
    }
2044
}
2045

    
2046
static void init_dequant8_coeff_table(H264Context *h){
2047
    int i,q,x;
2048
    const int transpose = (h->s.dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
2049
    h->dequant8_coeff[0] = h->dequant8_buffer[0];
2050
    h->dequant8_coeff[1] = h->dequant8_buffer[1];
2051

    
2052
    for(i=0; i<2; i++ ){
2053
        if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
2054
            h->dequant8_coeff[1] = h->dequant8_buffer[0];
2055
            break;
2056
        }
2057

    
2058
        for(q=0; q<52; q++){
2059
            int shift = div6[q];
2060
            int idx = rem6[q];
2061
            for(x=0; x<64; x++)
2062
                h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
2063
                    ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
2064
                    h->pps.scaling_matrix8[i][x]) << shift;
2065
        }
2066
    }
2067
}
2068

    
2069
static void init_dequant4_coeff_table(H264Context *h){
2070
    int i,j,q,x;
2071
    const int transpose = (h->s.dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
2072
    for(i=0; i<6; i++ ){
2073
        h->dequant4_coeff[i] = h->dequant4_buffer[i];
2074
        for(j=0; j<i; j++){
2075
            if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
2076
                h->dequant4_coeff[i] = h->dequant4_buffer[j];
2077
                break;
2078
            }
2079
        }
2080
        if(j<i)
2081
            continue;
2082

    
2083
        for(q=0; q<52; q++){
2084
            int shift = div6[q] + 2;
2085
            int idx = rem6[q];
2086
            for(x=0; x<16; x++)
2087
                h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
2088
                    ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
2089
                    h->pps.scaling_matrix4[i][x]) << shift;
2090
        }
2091
    }
2092
}
2093

    
2094
static void init_dequant_tables(H264Context *h){
2095
    int i,x;
2096
    init_dequant4_coeff_table(h);
2097
    if(h->pps.transform_8x8_mode)
2098
        init_dequant8_coeff_table(h);
2099
    if(h->sps.transform_bypass){
2100
        for(i=0; i<6; i++)
2101
            for(x=0; x<16; x++)
2102
                h->dequant4_coeff[i][0][x] = 1<<6;
2103
        if(h->pps.transform_8x8_mode)
2104
            for(i=0; i<2; i++)
2105
                for(x=0; x<64; x++)
2106
                    h->dequant8_coeff[i][0][x] = 1<<6;
2107
    }
2108
}
2109

    
2110

    
2111
/**
2112
 * allocates tables.
2113
 * needs width/height
2114
 */
2115
static int alloc_tables(H264Context *h){
2116
    MpegEncContext * const s = &h->s;
2117
    const int big_mb_num= s->mb_stride * (s->mb_height+1);
2118
    int x,y;
2119

    
2120
    CHECKED_ALLOCZ(h->intra4x4_pred_mode, big_mb_num * 8  * sizeof(uint8_t))
2121

    
2122
    CHECKED_ALLOCZ(h->non_zero_count    , big_mb_num * 16 * sizeof(uint8_t))
2123
    CHECKED_ALLOCZ(h->slice_table_base  , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base))
2124
    CHECKED_ALLOCZ(h->cbp_table, big_mb_num * sizeof(uint16_t))
2125

    
2126
    CHECKED_ALLOCZ(h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t))
2127
    CHECKED_ALLOCZ(h->mvd_table[0], 32*big_mb_num * sizeof(uint16_t));
2128
    CHECKED_ALLOCZ(h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t));
2129
    CHECKED_ALLOCZ(h->direct_table, 32*big_mb_num * sizeof(uint8_t));
2130

    
2131
    memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride)  * sizeof(*h->slice_table_base));
2132
    h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
2133

    
2134
    CHECKED_ALLOCZ(h->mb2b_xy  , big_mb_num * sizeof(uint32_t));
2135
    CHECKED_ALLOCZ(h->mb2b8_xy , big_mb_num * sizeof(uint32_t));
2136
    for(y=0; y<s->mb_height; y++){
2137
        for(x=0; x<s->mb_width; x++){
2138
            const int mb_xy= x + y*s->mb_stride;
2139
            const int b_xy = 4*x + 4*y*h->b_stride;
2140
            const int b8_xy= 2*x + 2*y*h->b8_stride;
2141

    
2142
            h->mb2b_xy [mb_xy]= b_xy;
2143
            h->mb2b8_xy[mb_xy]= b8_xy;
2144
        }
2145
    }
2146

    
2147
    s->obmc_scratchpad = NULL;
2148

    
2149
    if(!h->dequant4_coeff[0])
2150
        init_dequant_tables(h);
2151

    
2152
    return 0;
2153
fail:
2154
    free_tables(h);
2155
    return -1;
2156
}
2157

    
2158
/**
2159
 * Mimic alloc_tables(), but for every context thread.
2160
 */
2161
static void clone_tables(H264Context *dst, H264Context *src){
2162
    dst->intra4x4_pred_mode       = src->intra4x4_pred_mode;
2163
    dst->non_zero_count           = src->non_zero_count;
2164
    dst->slice_table              = src->slice_table;
2165
    dst->cbp_table                = src->cbp_table;
2166
    dst->mb2b_xy                  = src->mb2b_xy;
2167
    dst->mb2b8_xy                 = src->mb2b8_xy;
2168
    dst->chroma_pred_mode_table   = src->chroma_pred_mode_table;
2169
    dst->mvd_table[0]             = src->mvd_table[0];
2170
    dst->mvd_table[1]             = src->mvd_table[1];
2171
    dst->direct_table             = src->direct_table;
2172

    
2173
    dst->s.obmc_scratchpad = NULL;
2174
    ff_h264_pred_init(&dst->hpc, src->s.codec_id);
2175
}
2176

    
2177
/**
2178
 * Init context
2179
 * Allocate buffers which are not shared amongst multiple threads.
2180
 */
2181
static int context_init(H264Context *h){
2182
    CHECKED_ALLOCZ(h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t))
2183
    CHECKED_ALLOCZ(h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t))
2184

    
2185
    return 0;
2186
fail:
2187
    return -1; // free_tables will clean up for us
2188
}
2189

    
2190
static av_cold void common_init(H264Context *h){
2191
    MpegEncContext * const s = &h->s;
2192

    
2193
    s->width = s->avctx->width;
2194
    s->height = s->avctx->height;
2195
    s->codec_id= s->avctx->codec->id;
2196

    
2197
    ff_h264_pred_init(&h->hpc, s->codec_id);
2198

    
2199
    h->dequant_coeff_pps= -1;
2200
    s->unrestricted_mv=1;
2201
    s->decode=1; //FIXME
2202

    
2203
    memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
2204
    memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
2205
}
2206

    
2207
static av_cold int decode_init(AVCodecContext *avctx){
2208
    H264Context *h= avctx->priv_data;
2209
    MpegEncContext * const s = &h->s;
2210

    
2211
    MPV_decode_defaults(s);
2212

    
2213
    s->avctx = avctx;
2214
    common_init(h);
2215

    
2216
    s->out_format = FMT_H264;
2217
    s->workaround_bugs= avctx->workaround_bugs;
2218

    
2219
    // set defaults
2220
//    s->decode_mb= ff_h263_decode_mb;
2221
    s->quarter_sample = 1;
2222
    s->low_delay= 1;
2223

    
2224
    if(avctx->codec_id == CODEC_ID_SVQ3)
2225
        avctx->pix_fmt= PIX_FMT_YUVJ420P;
2226
    else
2227
        avctx->pix_fmt= PIX_FMT_YUV420P;
2228

    
2229
    decode_init_vlc();
2230

    
2231
    if(avctx->extradata_size > 0 && avctx->extradata &&
2232
       *(char *)avctx->extradata == 1){
2233
        h->is_avc = 1;
2234
        h->got_avcC = 0;
2235
    } else {
2236
        h->is_avc = 0;
2237
    }
2238

    
2239
    h->thread_context[0] = h;
2240
    h->outputed_poc = INT_MIN;
2241
    h->prev_poc_msb= 1<<16;
2242
    return 0;
2243
}
2244

    
2245
static int frame_start(H264Context *h){
2246
    MpegEncContext * const s = &h->s;
2247
    int i;
2248

    
2249
    if(MPV_frame_start(s, s->avctx) < 0)
2250
        return -1;
2251
    ff_er_frame_start(s);
2252
    /*
2253
     * MPV_frame_start uses pict_type to derive key_frame.
2254
     * This is incorrect for H.264; IDR markings must be used.
2255
     * Zero here; IDR markings per slice in frame or fields are ORed in later.
2256
     * See decode_nal_units().
2257
     */
2258
    s->current_picture_ptr->key_frame= 0;
2259

    
2260
    assert(s->linesize && s->uvlinesize);
2261

    
2262
    for(i=0; i<16; i++){
2263
        h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
2264
        h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
2265
    }
2266
    for(i=0; i<4; i++){
2267
        h->block_offset[16+i]=
2268
        h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2269
        h->block_offset[24+16+i]=
2270
        h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2271
    }
2272

    
2273
    /* can't be in alloc_tables because linesize isn't known there.
2274
     * FIXME: redo bipred weight to not require extra buffer? */
2275
    for(i = 0; i < s->avctx->thread_count; i++)
2276
        if(!h->thread_context[i]->s.obmc_scratchpad)
2277
            h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
2278

    
2279
    /* some macroblocks will be accessed before they're available */
2280
    if(FRAME_MBAFF || s->avctx->thread_count > 1)
2281
        memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
2282

    
2283
//    s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
2284

    
2285
    // We mark the current picture as non-reference after allocating it, so
2286
    // that if we break out due to an error it can be released automatically
2287
    // in the next MPV_frame_start().
2288
    // SVQ3 as well as most other codecs have only last/next/current and thus
2289
    // get released even with set reference, besides SVQ3 and others do not
2290
    // mark frames as reference later "naturally".
2291
    if(s->codec_id != CODEC_ID_SVQ3)
2292
        s->current_picture_ptr->reference= 0;
2293

    
2294
    s->current_picture_ptr->field_poc[0]=
2295
    s->current_picture_ptr->field_poc[1]= INT_MAX;
2296
    assert(s->current_picture_ptr->long_ref==0);
2297

    
2298
    return 0;
2299
}
2300

    
2301
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){
2302
    MpegEncContext * const s = &h->s;
2303
    int i;
2304
    int step    = 1;
2305
    int offset  = 1;
2306
    int uvoffset= 1;
2307
    int top_idx = 1;
2308
    int skiplast= 0;
2309

    
2310
    src_y  -=   linesize;
2311
    src_cb -= uvlinesize;
2312
    src_cr -= uvlinesize;
2313

    
2314
    if(!simple && FRAME_MBAFF){
2315
        if(s->mb_y&1){
2316
            offset  = MB_MBAFF ? 1 : 17;
2317
            uvoffset= MB_MBAFF ? 1 : 9;
2318
            if(!MB_MBAFF){
2319
                *(uint64_t*)(h->top_borders[0][s->mb_x]+ 0)= *(uint64_t*)(src_y +  15*linesize);
2320
                *(uint64_t*)(h->top_borders[0][s->mb_x]+ 8)= *(uint64_t*)(src_y +8+15*linesize);
2321
                if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2322
                    *(uint64_t*)(h->top_borders[0][s->mb_x]+16)= *(uint64_t*)(src_cb+7*uvlinesize);
2323
                    *(uint64_t*)(h->top_borders[0][s->mb_x]+24)= *(uint64_t*)(src_cr+7*uvlinesize);
2324
                }
2325
            }
2326
        }else{
2327
            if(!MB_MBAFF){
2328
                h->left_border[0]= h->top_borders[0][s->mb_x][15];
2329
                if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2330
                    h->left_border[34   ]= h->top_borders[0][s->mb_x][16+7  ];
2331
                    h->left_border[34+18]= h->top_borders[0][s->mb_x][16+8+7];
2332
                }
2333
                skiplast= 1;
2334
            }
2335
            offset  =
2336
            uvoffset=
2337
            top_idx = MB_MBAFF ? 0 : 1;
2338
        }
2339
        step= MB_MBAFF ? 2 : 1;
2340
    }
2341

    
2342
    // There are two lines saved, the line above the the top macroblock of a pair,
2343
    // and the line above the bottom macroblock
2344
    h->left_border[offset]= h->top_borders[top_idx][s->mb_x][15];
2345
    for(i=1; i<17 - skiplast; i++){
2346
        h->left_border[offset+i*step]= src_y[15+i*  linesize];
2347
    }
2348

    
2349
    *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0)= *(uint64_t*)(src_y +  16*linesize);
2350
    *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8)= *(uint64_t*)(src_y +8+16*linesize);
2351

    
2352
    if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2353
        h->left_border[uvoffset+34   ]= h->top_borders[top_idx][s->mb_x][16+7];
2354
        h->left_border[uvoffset+34+18]= h->top_borders[top_idx][s->mb_x][24+7];
2355
        for(i=1; i<9 - skiplast; i++){
2356
            h->left_border[uvoffset+34   +i*step]= src_cb[7+i*uvlinesize];
2357
            h->left_border[uvoffset+34+18+i*step]= src_cr[7+i*uvlinesize];
2358
        }
2359
        *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16)= *(uint64_t*)(src_cb+8*uvlinesize);
2360
        *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24)= *(uint64_t*)(src_cr+8*uvlinesize);
2361
    }
2362
}
2363

    
2364
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){
2365
    MpegEncContext * const s = &h->s;
2366
    int temp8, i;
2367
    uint64_t temp64;
2368
    int deblock_left;
2369
    int deblock_top;
2370
    int mb_xy;
2371
    int step    = 1;
2372
    int offset  = 1;
2373
    int uvoffset= 1;
2374
    int top_idx = 1;
2375

    
2376
    if(!simple && FRAME_MBAFF){
2377
        if(s->mb_y&1){
2378
            offset  = MB_MBAFF ? 1 : 17;
2379
            uvoffset= MB_MBAFF ? 1 : 9;
2380
        }else{
2381
            offset  =
2382
            uvoffset=
2383
            top_idx = MB_MBAFF ? 0 : 1;
2384
        }
2385
        step= MB_MBAFF ? 2 : 1;
2386
    }
2387

    
2388
    if(h->deblocking_filter == 2) {
2389
        mb_xy = h->mb_xy;
2390
        deblock_left = h->slice_table[mb_xy] == h->slice_table[mb_xy - 1];
2391
        deblock_top  = h->slice_table[mb_xy] == h->slice_table[h->top_mb_xy];
2392
    } else {
2393
        deblock_left = (s->mb_x > 0);
2394
        deblock_top =  (s->mb_y > !!MB_FIELD);
2395
    }
2396

    
2397
    src_y  -=   linesize + 1;
2398
    src_cb -= uvlinesize + 1;
2399
    src_cr -= uvlinesize + 1;
2400

    
2401
#define XCHG(a,b,t,xchg)\
2402
t= a;\
2403
if(xchg)\
2404
    a= b;\
2405
b= t;
2406

    
2407
    if(deblock_left){
2408
        for(i = !deblock_top; i<16; i++){
2409
            XCHG(h->left_border[offset+i*step], src_y [i*  linesize], temp8, xchg);
2410
        }
2411
        XCHG(h->left_border[offset+i*step], src_y [i*  linesize], temp8, 1);
2412
    }
2413

    
2414
    if(deblock_top){
2415
        XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg);
2416
        XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1);
2417
        if(s->mb_x+1 < s->mb_width){
2418
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x+1]), *(uint64_t*)(src_y +17), temp64, 1);
2419
        }
2420
    }
2421

    
2422
    if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2423
        if(deblock_left){
2424
            for(i = !deblock_top; i<8; i++){
2425
                XCHG(h->left_border[uvoffset+34   +i*step], src_cb[i*uvlinesize], temp8, xchg);
2426
                XCHG(h->left_border[uvoffset+34+18+i*step], src_cr[i*uvlinesize], temp8, xchg);
2427
            }
2428
            XCHG(h->left_border[uvoffset+34   +i*step], src_cb[i*uvlinesize], temp8, 1);
2429
            XCHG(h->left_border[uvoffset+34+18+i*step], src_cr[i*uvlinesize], temp8, 1);
2430
        }
2431
        if(deblock_top){
2432
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1);
2433
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1);
2434
        }
2435
    }
2436
}
2437

    
2438
static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
2439
    MpegEncContext * const s = &h->s;
2440
    const int mb_x= s->mb_x;
2441
    const int mb_y= s->mb_y;
2442
    const int mb_xy= h->mb_xy;
2443
    const int mb_type= s->current_picture.mb_type[mb_xy];
2444
    uint8_t  *dest_y, *dest_cb, *dest_cr;
2445
    int linesize, uvlinesize /*dct_offset*/;
2446
    int i;
2447
    int *block_offset = &h->block_offset[0];
2448
    const int transform_bypass = (s->qscale == 0 && h->sps.transform_bypass), is_h264 = (simple || s->codec_id == CODEC_ID_H264);
2449
    void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
2450
    void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
2451

    
2452
    dest_y  = s->current_picture.data[0] + (mb_y * 16* s->linesize  ) + mb_x * 16;
2453
    dest_cb = s->current_picture.data[1] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2454
    dest_cr = s->current_picture.data[2] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2455

    
2456
    s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
2457
    s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
2458

    
2459
    if (!simple && MB_FIELD) {
2460
        linesize   = h->mb_linesize   = s->linesize * 2;
2461
        uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2462
        block_offset = &h->block_offset[24];
2463
        if(mb_y&1){ //FIXME move out of this function?
2464
            dest_y -= s->linesize*15;
2465
            dest_cb-= s->uvlinesize*7;
2466
            dest_cr-= s->uvlinesize*7;
2467
        }
2468
        if(FRAME_MBAFF) {
2469
            int list;
2470
            for(list=0; list<h->list_count; list++){
2471
                if(!USES_LIST(mb_type, list))
2472
                    continue;
2473
                if(IS_16X16(mb_type)){
2474
                    int8_t *ref = &h->ref_cache[list][scan8[0]];
2475
                    fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
2476
                }else{
2477
                    for(i=0; i<16; i+=4){
2478
                        int ref = h->ref_cache[list][scan8[i]];
2479
                        if(ref >= 0)
2480
                            fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
2481
                    }
2482
                }
2483
            }
2484
        }
2485
    } else {
2486
        linesize   = h->mb_linesize   = s->linesize;
2487
        uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2488
//        dct_offset = s->linesize * 16;
2489
    }
2490

    
2491
    if(transform_bypass){
2492
        idct_dc_add =
2493
        idct_add = IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
2494
    }else if(IS_8x8DCT(mb_type)){
2495
        idct_dc_add = s->dsp.h264_idct8_dc_add;
2496
        idct_add = s->dsp.h264_idct8_add;
2497
    }else{
2498
        idct_dc_add = s->dsp.h264_idct_dc_add;
2499
        idct_add = s->dsp.h264_idct_add;
2500
    }
2501

    
2502
    if (!simple && IS_INTRA_PCM(mb_type)) {
2503
        for (i=0; i<16; i++) {
2504
            memcpy(dest_y + i*  linesize, h->mb       + i*8, 16);
2505
        }
2506
        for (i=0; i<8; i++) {
2507
            memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4,  8);
2508
            memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4,  8);
2509
        }
2510
    } else {
2511
        if(IS_INTRA(mb_type)){
2512
            if(h->deblocking_filter)
2513
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
2514

    
2515
            if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2516
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
2517
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
2518
            }
2519

    
2520
            if(IS_INTRA4x4(mb_type)){
2521
                if(simple || !s->encoding){
2522
                    if(IS_8x8DCT(mb_type)){
2523
                        for(i=0; i<16; i+=4){
2524
                            uint8_t * const ptr= dest_y + block_offset[i];
2525
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2526
                            const int nnz = h->non_zero_count_cache[ scan8[i] ];
2527
                            h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
2528
                                                   (h->topright_samples_available<<i)&0x4000, linesize);
2529
                            if(nnz){
2530
                                if(nnz == 1 && h->mb[i*16])
2531
                                    idct_dc_add(ptr, h->mb + i*16, linesize);
2532
                                else
2533
                                    idct_add(ptr, h->mb + i*16, linesize);
2534
                            }
2535
                        }
2536
                    }else
2537
                    for(i=0; i<16; i++){
2538
                        uint8_t * const ptr= dest_y + block_offset[i];
2539
                        uint8_t *topright;
2540
                        const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2541
                        int nnz, tr;
2542

    
2543
                        if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
2544
                            const int topright_avail= (h->topright_samples_available<<i)&0x8000;
2545
                            assert(mb_y || linesize <= block_offset[i]);
2546
                            if(!topright_avail){
2547
                                tr= ptr[3 - linesize]*0x01010101;
2548
                                topright= (uint8_t*) &tr;
2549
                            }else
2550
                                topright= ptr + 4 - linesize;
2551
                        }else
2552
                            topright= NULL;
2553

    
2554
                        h->hpc.pred4x4[ dir ](ptr, topright, linesize);
2555
                        nnz = h->non_zero_count_cache[ scan8[i] ];
2556
                        if(nnz){
2557
                            if(is_h264){
2558
                                if(nnz == 1 && h->mb[i*16])
2559
                                    idct_dc_add(ptr, h->mb + i*16, linesize);
2560
                                else
2561
                                    idct_add(ptr, h->mb + i*16, linesize);
2562
                            }else
2563
                                svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
2564
                        }
2565
                    }
2566
                }
2567
            }else{
2568
                h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
2569
                if(is_h264){
2570
                    if(!transform_bypass)
2571
                        h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
2572
                }else
2573
                    svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
2574
            }
2575
            if(h->deblocking_filter)
2576
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
2577
        }else if(is_h264){
2578
            hl_motion(h, dest_y, dest_cb, dest_cr,
2579
                      s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
2580
                      s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
2581
                      s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab);
2582
        }
2583

    
2584

    
2585
        if(!IS_INTRA4x4(mb_type)){
2586
            if(is_h264){
2587
                if(IS_INTRA16x16(mb_type)){
2588
                    for(i=0; i<16; i++){
2589
                        if(h->non_zero_count_cache[ scan8[i] ])
2590
                            idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2591
                        else if(h->mb[i*16])
2592
                            idct_dc_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2593
                    }
2594
                }else{
2595
                    const int di = IS_8x8DCT(mb_type) ? 4 : 1;
2596
                    for(i=0; i<16; i+=di){
2597
                        int nnz = h->non_zero_count_cache[ scan8[i] ];
2598
                        if(nnz){
2599
                            if(nnz==1 && h->mb[i*16])
2600
                                idct_dc_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2601
                            else
2602
                                idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2603
                        }
2604
                    }
2605
                }
2606
            }else{
2607
                for(i=0; i<16; i++){
2608
                    if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
2609
                        uint8_t * const ptr= dest_y + block_offset[i];
2610
                        svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
2611
                    }
2612
                }
2613
            }
2614
        }
2615

    
2616
        if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2617
            uint8_t *dest[2] = {dest_cb, dest_cr};
2618
            if(transform_bypass){
2619
                idct_add = idct_dc_add = s->dsp.add_pixels4;
2620
            }else{
2621
                idct_add = s->dsp.h264_idct_add;
2622
                idct_dc_add = s->dsp.h264_idct_dc_add;
2623
                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]);
2624
                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]);
2625
            }
2626
            if(is_h264){
2627
                for(i=16; i<16+8; i++){
2628
                    if(h->non_zero_count_cache[ scan8[i] ])
2629
                        idct_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
2630
                    else if(h->mb[i*16])
2631
                        idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
2632
                }
2633
            }else{
2634
                for(i=16; i<16+8; i++){
2635
                    if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2636
                        uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
2637
                        svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
2638
                    }
2639
                }
2640
            }
2641
        }
2642
    }
2643
    if(h->deblocking_filter) {
2644
        backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, simple);
2645
        fill_caches(h, mb_type, 1); //FIXME don't fill stuff which isn't used by filter_mb
2646
        h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2647
        h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2648
        if (!simple && FRAME_MBAFF) {
2649
            filter_mb     (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2650
        } else {
2651
            filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2652
        }
2653
    }
2654
}
2655

    
2656
/**
2657
 * Process a macroblock; this case avoids checks for expensive uncommon cases.
2658
 */
2659
static void hl_decode_mb_simple(H264Context *h){
2660
    hl_decode_mb_internal(h, 1);
2661
}
2662

    
2663
/**
2664
 * Process a macroblock; this handles edge cases, such as interlacing.
2665
 */
2666
static void av_noinline hl_decode_mb_complex(H264Context *h){
2667
    hl_decode_mb_internal(h, 0);
2668
}
2669

    
2670
static void hl_decode_mb(H264Context *h){
2671
    MpegEncContext * const s = &h->s;
2672
    const int mb_xy= h->mb_xy;
2673
    const int mb_type= s->current_picture.mb_type[mb_xy];
2674
    int is_complex = FRAME_MBAFF || MB_FIELD || IS_INTRA_PCM(mb_type) || s->codec_id != CODEC_ID_H264 ||
2675
                    (ENABLE_GRAY && (s->flags&CODEC_FLAG_GRAY)) || (ENABLE_H264_ENCODER && s->encoding) || ENABLE_SMALL;
2676

    
2677
    if(ENABLE_H264_ENCODER && !s->decode)
2678
        return;
2679

    
2680
    if (is_complex)
2681
        hl_decode_mb_complex(h);
2682
    else hl_decode_mb_simple(h);
2683
}
2684

    
2685
static void pic_as_field(Picture *pic, const int parity){
2686
    int i;
2687
    for (i = 0; i < 4; ++i) {
2688
        if (parity == PICT_BOTTOM_FIELD)
2689
            pic->data[i] += pic->linesize[i];
2690
        pic->reference = parity;
2691
        pic->linesize[i] *= 2;
2692
    }
2693
    pic->poc= pic->field_poc[parity == PICT_BOTTOM_FIELD];
2694
}
2695

    
2696
static int split_field_copy(Picture *dest, Picture *src,
2697
                            int parity, int id_add){
2698
    int match = !!(src->reference & parity);
2699

    
2700
    if (match) {
2701
        *dest = *src;
2702
        if(parity != PICT_FRAME){
2703
            pic_as_field(dest, parity);
2704
            dest->pic_id *= 2;
2705
            dest->pic_id += id_add;
2706
        }
2707
    }
2708

    
2709
    return match;
2710
}
2711

    
2712
static int build_def_list(Picture *def, Picture **in, int len, int is_long, int sel){
2713
    int i[2]={0};
2714
    int index=0;
2715

    
2716
    while(i[0]<len || i[1]<len){
2717
        while(i[0]<len && !(in[ i[0] ] && (in[ i[0] ]->reference & sel)))
2718
            i[0]++;
2719
        while(i[1]<len && !(in[ i[1] ] && (in[ i[1] ]->reference & (sel^3))))
2720
            i[1]++;
2721
        if(i[0] < len){
2722
            in[ i[0] ]->pic_id= is_long ? i[0] : in[ i[0] ]->frame_num;
2723
            split_field_copy(&def[index++], in[ i[0]++ ], sel  , 1);
2724
        }
2725
        if(i[1] < len){
2726
            in[ i[1] ]->pic_id= is_long ? i[1] : in[ i[1] ]->frame_num;
2727
            split_field_copy(&def[index++], in[ i[1]++ ], sel^3, 0);
2728
        }
2729
    }
2730

    
2731
    return index;
2732
}
2733

    
2734
static int add_sorted(Picture **sorted, Picture **src, int len, int limit, int dir){
2735
    int i, best_poc;
2736
    int out_i= 0;
2737

    
2738
    for(;;){
2739
        best_poc= dir ? INT_MIN : INT_MAX;
2740

    
2741
        for(i=0; i<len; i++){
2742
            const int poc= src[i]->poc;
2743
            if(((poc > limit) ^ dir) && ((poc < best_poc) ^ dir)){
2744
                best_poc= poc;
2745
                sorted[out_i]= src[i];
2746
            }
2747
        }
2748
        if(best_poc == (dir ? INT_MIN : INT_MAX))
2749
            break;
2750
        limit= sorted[out_i++]->poc - dir;
2751
    }
2752
    return out_i;
2753
}
2754

    
2755
/**
2756
 * fills the default_ref_list.
2757
 */
2758
static int fill_default_ref_list(H264Context *h){
2759
    MpegEncContext * const s = &h->s;
2760
    int i, len;
2761

    
2762
    if(h->slice_type_nos==FF_B_TYPE){
2763
        Picture *sorted[32];
2764
        int cur_poc, list;
2765
        int lens[2];
2766

    
2767
        if(FIELD_PICTURE)
2768
            cur_poc= s->current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ];
2769
        else
2770
            cur_poc= s->current_picture_ptr->poc;
2771

    
2772
        for(list= 0; list<2; list++){
2773
            len= add_sorted(sorted    , h->short_ref, h->short_ref_count, cur_poc, 1^list);
2774
            len+=add_sorted(sorted+len, h->short_ref, h->short_ref_count, cur_poc, 0^list);
2775
            assert(len<=32);
2776
            len= build_def_list(h->default_ref_list[list]    , sorted     , len, 0, s->picture_structure);
2777
            len+=build_def_list(h->default_ref_list[list]+len, h->long_ref, 16 , 1, s->picture_structure);
2778
            assert(len<=32);
2779

    
2780
            if(len < h->ref_count[list])
2781
                memset(&h->default_ref_list[list][len], 0, sizeof(Picture)*(h->ref_count[list] - len));
2782
            lens[list]= len;
2783
        }
2784

    
2785
        if(lens[0] == lens[1] && lens[1] > 1){
2786
            for(i=0; h->default_ref_list[0][i].data[0] == h->default_ref_list[1][i].data[0] && i<lens[0]; i++);
2787
            if(i == lens[0])
2788
                FFSWAP(Picture, h->default_ref_list[1][0], h->default_ref_list[1][1]);
2789
        }
2790
    }else{
2791
        len = build_def_list(h->default_ref_list[0]    , h->short_ref, h->short_ref_count, 0, s->picture_structure);
2792
        len+= build_def_list(h->default_ref_list[0]+len, h-> long_ref, 16                , 1, s->picture_structure);
2793
        assert(len <= 32);
2794
        if(len < h->ref_count[0])
2795
            memset(&h->default_ref_list[0][len], 0, sizeof(Picture)*(h->ref_count[0] - len));
2796
    }
2797
#ifdef TRACE
2798
    for (i=0; i<h->ref_count[0]; i++) {
2799
        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]);
2800
    }
2801
    if(h->slice_type_nos==FF_B_TYPE){
2802
        for (i=0; i<h->ref_count[1]; i++) {
2803
            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]);
2804
        }
2805
    }
2806
#endif
2807
    return 0;
2808
}
2809

    
2810
static void print_short_term(H264Context *h);
2811
static void print_long_term(H264Context *h);
2812

    
2813
/**
2814
 * Extract structure information about the picture described by pic_num in
2815
 * the current decoding context (frame or field). Note that pic_num is
2816
 * picture number without wrapping (so, 0<=pic_num<max_pic_num).
2817
 * @param pic_num picture number for which to extract structure information
2818
 * @param structure one of PICT_XXX describing structure of picture
2819
 *                      with pic_num
2820
 * @return frame number (short term) or long term index of picture
2821
 *         described by pic_num
2822
 */
2823
static int pic_num_extract(H264Context *h, int pic_num, int *structure){
2824
    MpegEncContext * const s = &h->s;
2825

    
2826
    *structure = s->picture_structure;
2827
    if(FIELD_PICTURE){
2828
        if (!(pic_num & 1))
2829
            /* opposite field */
2830
            *structure ^= PICT_FRAME;
2831
        pic_num >>= 1;
2832
    }
2833

    
2834
    return pic_num;
2835
}
2836

    
2837
static int decode_ref_pic_list_reordering(H264Context *h){
2838
    MpegEncContext * const s = &h->s;
2839
    int list, index, pic_structure;
2840

    
2841
    print_short_term(h);
2842
    print_long_term(h);
2843

    
2844
    for(list=0; list<h->list_count; list++){
2845
        memcpy(h->ref_list[list], h->default_ref_list[list], sizeof(Picture)*h->ref_count[list]);
2846

    
2847
        if(get_bits1(&s->gb)){
2848
            int pred= h->curr_pic_num;
2849

    
2850
            for(index=0; ; index++){
2851
                unsigned int reordering_of_pic_nums_idc= get_ue_golomb(&s->gb);
2852
                unsigned int pic_id;
2853
                int i;
2854
                Picture *ref = NULL;
2855

    
2856
                if(reordering_of_pic_nums_idc==3)
2857
                    break;
2858

    
2859
                if(index >= h->ref_count[list]){
2860
                    av_log(h->s.avctx, AV_LOG_ERROR, "reference count overflow\n");
2861
                    return -1;
2862
                }
2863

    
2864
                if(reordering_of_pic_nums_idc<3){
2865
                    if(reordering_of_pic_nums_idc<2){
2866
                        const unsigned int abs_diff_pic_num= get_ue_golomb(&s->gb) + 1;
2867
                        int frame_num;
2868

    
2869
                        if(abs_diff_pic_num > h->max_pic_num){
2870
                            av_log(h->s.avctx, AV_LOG_ERROR, "abs_diff_pic_num overflow\n");
2871
                            return -1;
2872
                        }
2873

    
2874
                        if(reordering_of_pic_nums_idc == 0) pred-= abs_diff_pic_num;
2875
                        else                                pred+= abs_diff_pic_num;
2876
                        pred &= h->max_pic_num - 1;
2877

    
2878
                        frame_num = pic_num_extract(h, pred, &pic_structure);
2879

    
2880
                        for(i= h->short_ref_count-1; i>=0; i--){
2881
                            ref = h->short_ref[i];
2882
                            assert(ref->reference);
2883
                            assert(!ref->long_ref);
2884
                            if(
2885
                                   ref->frame_num == frame_num &&
2886
                                   (ref->reference & pic_structure)
2887
                              )
2888
                                break;
2889
                        }
2890
                        if(i>=0)
2891
                            ref->pic_id= pred;
2892
                    }else{
2893
                        int long_idx;
2894
                        pic_id= get_ue_golomb(&s->gb); //long_term_pic_idx
2895

    
2896
                        long_idx= pic_num_extract(h, pic_id, &pic_structure);
2897

    
2898
                        if(long_idx>31){
2899
                            av_log(h->s.avctx, AV_LOG_ERROR, "long_term_pic_idx overflow\n");
2900
                            return -1;
2901
                        }
2902
                        ref = h->long_ref[long_idx];
2903
                        assert(!(ref && !ref->reference));
2904
                        if(ref && (ref->reference & pic_structure)){
2905
                            ref->pic_id= pic_id;
2906
                            assert(ref->long_ref);
2907
                            i=0;
2908
                        }else{
2909
                            i=-1;
2910
                        }
2911
                    }
2912

    
2913
                    if (i < 0) {
2914
                        av_log(h->s.avctx, AV_LOG_ERROR, "reference picture missing during reorder\n");
2915
                        memset(&h->ref_list[list][index], 0, sizeof(Picture)); //FIXME
2916
                    } else {
2917
                        for(i=index; i+1<h->ref_count[list]; i++){
2918
                            if(ref->long_ref == h->ref_list[list][i].long_ref && ref->pic_id == h->ref_list[list][i].pic_id)
2919
                                break;
2920
                        }
2921
                        for(; i > index; i--){
2922
                            h->ref_list[list][i]= h->ref_list[list][i-1];
2923
                        }
2924
                        h->ref_list[list][index]= *ref;
2925
                        if (FIELD_PICTURE){
2926
                            pic_as_field(&h->ref_list[list][index], pic_structure);
2927
                        }
2928
                    }
2929
                }else{
2930
                    av_log(h->s.avctx, AV_LOG_ERROR, "illegal reordering_of_pic_nums_idc\n");
2931
                    return -1;
2932
                }
2933
            }
2934
        }
2935
    }
2936
    for(list=0; list<h->list_count; list++){
2937
        for(index= 0; index < h->ref_count[list]; index++){
2938
            if(!h->ref_list[list][index].data[0]){
2939
                av_log(h->s.avctx, AV_LOG_ERROR, "Missing reference picture\n");
2940
                h->ref_list[list][index]= s->current_picture; //FIXME this is not a sensible solution
2941
            }
2942
        }
2943
    }
2944

    
2945
    return 0;
2946
}
2947

    
2948
static void fill_mbaff_ref_list(H264Context *h){
2949
    int list, i, j;
2950
    for(list=0; list<2; list++){ //FIXME try list_count
2951
        for(i=0; i<h->ref_count[list]; i++){
2952
            Picture *frame = &h->ref_list[list][i];
2953
            Picture *field = &h->ref_list[list][16+2*i];
2954
            field[0] = *frame;
2955
            for(j=0; j<3; j++)
2956
                field[0].linesize[j] <<= 1;
2957
            field[0].reference = PICT_TOP_FIELD;
2958
            field[0].poc= field[0].field_poc[0];
2959
            field[1] = field[0];
2960
            for(j=0; j<3; j++)
2961
                field[1].data[j] += frame->linesize[j];
2962
            field[1].reference = PICT_BOTTOM_FIELD;
2963
            field[1].poc= field[1].field_poc[1];
2964

    
2965
            h->luma_weight[list][16+2*i] = h->luma_weight[list][16+2*i+1] = h->luma_weight[list][i];
2966
            h->luma_offset[list][16+2*i] = h->luma_offset[list][16+2*i+1] = h->luma_offset[list][i];
2967
            for(j=0; j<2; j++){
2968
                h->chroma_weight[list][16+2*i][j] = h->chroma_weight[list][16+2*i+1][j] = h->chroma_weight[list][i][j];
2969
                h->chroma_offset[list][16+2*i][j] = h->chroma_offset[list][16+2*i+1][j] = h->chroma_offset[list][i][j];
2970
            }
2971
        }
2972
    }
2973
    for(j=0; j<h->ref_count[1]; j++){
2974
        for(i=0; i<h->ref_count[0]; i++)
2975
            h->implicit_weight[j][16+2*i] = h->implicit_weight[j][16+2*i+1] = h->implicit_weight[j][i];
2976
        memcpy(h->implicit_weight[16+2*j],   h->implicit_weight[j], sizeof(*h->implicit_weight));
2977
        memcpy(h->implicit_weight[16+2*j+1], h->implicit_weight[j], sizeof(*h->implicit_weight));
2978
    }
2979
}
2980

    
2981
static int pred_weight_table(H264Context *h){
2982
    MpegEncContext * const s = &h->s;
2983
    int list, i;
2984
    int luma_def, chroma_def;
2985

    
2986
    h->use_weight= 0;
2987
    h->use_weight_chroma= 0;
2988
    h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
2989
    h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
2990
    luma_def = 1<<h->luma_log2_weight_denom;
2991
    chroma_def = 1<<h->chroma_log2_weight_denom;
2992

    
2993
    for(list=0; list<2; list++){
2994
        for(i=0; i<h->ref_count[list]; i++){
2995
            int luma_weight_flag, chroma_weight_flag;
2996

    
2997
            luma_weight_flag= get_bits1(&s->gb);
2998
            if(luma_weight_flag){
2999
                h->luma_weight[list][i]= get_se_golomb(&s->gb);
3000
                h->luma_offset[list][i]= get_se_golomb(&s->gb);
3001
                if(   h->luma_weight[list][i] != luma_def
3002
                   || h->luma_offset[list][i] != 0)
3003
                    h->use_weight= 1;
3004
            }else{
3005
                h->luma_weight[list][i]= luma_def;
3006
                h->luma_offset[list][i]= 0;
3007
            }
3008

    
3009
            if(CHROMA){
3010
                chroma_weight_flag= get_bits1(&s->gb);
3011
                if(chroma_weight_flag){
3012
                    int j;
3013
                    for(j=0; j<2; j++){
3014
                        h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
3015
                        h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
3016
                        if(   h->chroma_weight[list][i][j] != chroma_def
3017
                        || h->chroma_offset[list][i][j] != 0)
3018
                            h->use_weight_chroma= 1;
3019
                    }
3020
                }else{
3021
                    int j;
3022
                    for(j=0; j<2; j++){
3023
                        h->chroma_weight[list][i][j]= chroma_def;
3024
                        h->chroma_offset[list][i][j]= 0;
3025
                    }
3026
                }
3027
            }
3028
        }
3029
        if(h->slice_type_nos != FF_B_TYPE) break;
3030
    }
3031
    h->use_weight= h->use_weight || h->use_weight_chroma;
3032
    return 0;
3033
}
3034

    
3035
static void implicit_weight_table(H264Context *h){
3036
    MpegEncContext * const s = &h->s;
3037
    int ref0, ref1;
3038
    int cur_poc = s->current_picture_ptr->poc;
3039

    
3040
    if(   h->ref_count[0] == 1 && h->ref_count[1] == 1
3041
       && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
3042
        h->use_weight= 0;
3043
        h->use_weight_chroma= 0;
3044
        return;
3045
    }
3046

    
3047
    h->use_weight= 2;
3048
    h->use_weight_chroma= 2;
3049
    h->luma_log2_weight_denom= 5;
3050
    h->chroma_log2_weight_denom= 5;
3051

    
3052
    for(ref0=0; ref0 < h->ref_count[0]; ref0++){
3053
        int poc0 = h->ref_list[0][ref0].poc;
3054
        for(ref1=0; ref1 < h->ref_count[1]; ref1++){
3055
            int poc1 = h->ref_list[1][ref1].poc;
3056
            int td = av_clip(poc1 - poc0, -128, 127);
3057
            if(td){
3058
                int tb = av_clip(cur_poc - poc0, -128, 127);
3059
                int tx = (16384 + (FFABS(td) >> 1)) / td;
3060
                int dist_scale_factor = av_clip((tb*tx + 32) >> 6, -1024, 1023) >> 2;
3061
                if(dist_scale_factor < -64 || dist_scale_factor > 128)
3062
                    h->implicit_weight[ref0][ref1] = 32;
3063
                else
3064
                    h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor;
3065
            }else
3066
                h->implicit_weight[ref0][ref1] = 32;
3067
        }
3068
    }
3069
}
3070

    
3071
/**
3072
 * Mark a picture as no longer needed for reference. The refmask
3073
 * argument allows unreferencing of individual fields or the whole frame.
3074
 * If the picture becomes entirely unreferenced, but is being held for
3075
 * display purposes, it is marked as such.
3076
 * @param refmask mask of fields to unreference; the mask is bitwise
3077
 *                anded with the reference marking of pic
3078
 * @return non-zero if pic becomes entirely unreferenced (except possibly
3079
 *         for display purposes) zero if one of the fields remains in
3080
 *         reference
3081
 */
3082
static inline int unreference_pic(H264Context *h, Picture *pic, int refmask){
3083
    int i;
3084
    if (pic->reference &= refmask) {
3085
        return 0;
3086
    } else {
3087
        for(i = 0; h->delayed_pic[i]; i++)
3088
            if(pic == h->delayed_pic[i]){
3089
                pic->reference=DELAYED_PIC_REF;
3090
                break;
3091
            }
3092
        return 1;
3093
    }
3094
}
3095

    
3096
/**
3097
 * instantaneous decoder refresh.
3098
 */
3099
static void idr(H264Context *h){
3100
    int i;
3101

    
3102
    for(i=0; i<16; i++){
3103
        remove_long(h, i, 0);
3104
    }
3105
    assert(h->long_ref_count==0);
3106

    
3107
    for(i=0; i<h->short_ref_count; i++){
3108
        unreference_pic(h, h->short_ref[i], 0);
3109
        h->short_ref[i]= NULL;
3110
    }
3111
    h->short_ref_count=0;
3112
    h->prev_frame_num= 0;
3113
    h->prev_frame_num_offset= 0;
3114
    h->prev_poc_msb=
3115
    h->prev_poc_lsb= 0;
3116
}
3117

    
3118
/* forget old pics after a seek */
3119
static void flush_dpb(AVCodecContext *avctx){
3120
    H264Context *h= avctx->priv_data;
3121
    int i;
3122
    for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
3123
        if(h->delayed_pic[i])
3124
            h->delayed_pic[i]->reference= 0;
3125
        h->delayed_pic[i]= NULL;
3126
    }
3127
    h->outputed_poc= INT_MIN;
3128
    idr(h);
3129
    if(h->s.current_picture_ptr)
3130
        h->s.current_picture_ptr->reference= 0;
3131
    h->s.first_field= 0;
3132
    ff_mpeg_flush(avctx);
3133
}
3134

    
3135
/**
3136
 * Find a Picture in the short term reference list by frame number.
3137
 * @param frame_num frame number to search for
3138
 * @param idx the index into h->short_ref where returned picture is found
3139
 *            undefined if no picture found.
3140
 * @return pointer to the found picture, or NULL if no pic with the provided
3141
 *                 frame number is found
3142
 */
3143
static Picture * find_short(H264Context *h, int frame_num, int *idx){
3144
    MpegEncContext * const s = &h->s;
3145
    int i;
3146

    
3147
    for(i=0; i<h->short_ref_count; i++){
3148
        Picture *pic= h->short_ref[i];
3149
        if(s->avctx->debug&FF_DEBUG_MMCO)
3150
            av_log(h->s.avctx, AV_LOG_DEBUG, "%d %d %p\n", i, pic->frame_num, pic);
3151
        if(pic->frame_num == frame_num) {
3152
            *idx = i;
3153
            return pic;
3154
        }
3155
    }
3156
    return NULL;
3157
}
3158

    
3159
/**
3160
 * Remove a picture from the short term reference list by its index in
3161
 * that list.  This does no checking on the provided index; it is assumed
3162
 * to be valid. Other list entries are shifted down.
3163
 * @param i index into h->short_ref of picture to remove.
3164
 */
3165
static void remove_short_at_index(H264Context *h, int i){
3166
    assert(i >= 0 && i < h->short_ref_count);
3167
    h->short_ref[i]= NULL;
3168
    if (--h->short_ref_count)
3169
        memmove(&h->short_ref[i], &h->short_ref[i+1], (h->short_ref_count - i)*sizeof(Picture*));
3170
}
3171

    
3172
/**
3173
 *
3174
 * @return the removed picture or NULL if an error occurs
3175
 */
3176
static Picture * remove_short(H264Context *h, int frame_num, int ref_mask){
3177
    MpegEncContext * const s = &h->s;
3178
    Picture *pic;
3179
    int i;
3180

    
3181
    if(s->avctx->debug&FF_DEBUG_MMCO)
3182
        av_log(h->s.avctx, AV_LOG_DEBUG, "remove short %d count %d\n", frame_num, h->short_ref_count);
3183

    
3184
    pic = find_short(h, frame_num, &i);
3185
    if (pic){
3186
        if(unreference_pic(h, pic, ref_mask))
3187
        remove_short_at_index(h, i);
3188
    }
3189

    
3190
    return pic;
3191
}
3192

    
3193
/**
3194
 * Remove a picture from the long term reference list by its index in
3195
 * that list.
3196
 * @return the removed picture or NULL if an error occurs
3197
 */
3198
static Picture * remove_long(H264Context *h, int i, int ref_mask){
3199
    Picture *pic;
3200

    
3201
    pic= h->long_ref[i];
3202
    if (pic){
3203
        if(unreference_pic(h, pic, ref_mask)){
3204
            assert(h->long_ref[i]->long_ref == 1);
3205
            h->long_ref[i]->long_ref= 0;
3206
            h->long_ref[i]= NULL;
3207
            h->long_ref_count--;
3208
        }
3209
    }
3210

    
3211
    return pic;
3212
}
3213

    
3214
/**
3215
 * print short term list
3216
 */
3217
static void print_short_term(H264Context *h) {
3218
    uint32_t i;
3219
    if(h->s.avctx->debug&FF_DEBUG_MMCO) {
3220
        av_log(h->s.avctx, AV_LOG_DEBUG, "short term list:\n");
3221
        for(i=0; i<h->short_ref_count; i++){
3222
            Picture *pic= h->short_ref[i];
3223
            av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]);
3224
        }
3225
    }
3226
}
3227

    
3228
/**
3229
 * print long term list
3230
 */
3231
static void print_long_term(H264Context *h) {
3232
    uint32_t i;
3233
    if(h->s.avctx->debug&FF_DEBUG_MMCO) {
3234
        av_log(h->s.avctx, AV_LOG_DEBUG, "long term list:\n");
3235
        for(i = 0; i < 16; i++){
3236
            Picture *pic= h->long_ref[i];
3237
            if (pic) {
3238
                av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]);
3239
            }
3240
        }
3241
    }
3242
}
3243

    
3244
/**
3245
 * Executes the reference picture marking (memory management control operations).
3246
 */
3247
static int execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){
3248
    MpegEncContext * const s = &h->s;
3249
    int i, j;
3250
    int current_ref_assigned=0;
3251
    Picture *pic;
3252

    
3253
    if((s->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0)
3254
        av_log(h->s.avctx, AV_LOG_DEBUG, "no mmco here\n");
3255

    
3256
    for(i=0; i<mmco_count; i++){
3257
        int structure, frame_num;
3258
        if(s->avctx->debug&FF_DEBUG_MMCO)
3259
            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);
3260

    
3261
        if(   mmco[i].opcode == MMCO_SHORT2UNUSED
3262
           || mmco[i].opcode == MMCO_SHORT2LONG){
3263
            frame_num = pic_num_extract(h, mmco[i].short_pic_num, &structure);
3264
            pic = find_short(h, frame_num, &j);
3265
            if(!pic){
3266
                if(mmco[i].opcode != MMCO_SHORT2LONG || !h->long_ref[mmco[i].long_arg]
3267
                   || h->long_ref[mmco[i].long_arg]->frame_num != frame_num)
3268
                av_log(h->s.avctx, AV_LOG_ERROR, "mmco: unref short failure\n");
3269
                continue;
3270
            }
3271
        }
3272

    
3273
        switch(mmco[i].opcode){
3274
        case MMCO_SHORT2UNUSED:
3275
            if(s->avctx->debug&FF_DEBUG_MMCO)
3276
                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);
3277
            remove_short(h, frame_num, structure ^ PICT_FRAME);
3278
            break;
3279
        case MMCO_SHORT2LONG:
3280
                if (h->long_ref[mmco[i].long_arg] != pic)
3281
                    remove_long(h, mmco[i].long_arg, 0);
3282

    
3283
                remove_short_at_index(h, j);
3284
                h->long_ref[ mmco[i].long_arg ]= pic;
3285
                if (h->long_ref[ mmco[i].long_arg ]){
3286
                    h->long_ref[ mmco[i].long_arg ]->long_ref=1;
3287
                    h->long_ref_count++;
3288
                }
3289
            break;
3290
        case MMCO_LONG2UNUSED:
3291
            j = pic_num_extract(h, mmco[i].long_arg, &structure);
3292
            pic = h->long_ref[j];
3293
            if (pic) {
3294
                remove_long(h, j, structure ^ PICT_FRAME);
3295
            } else if(s->avctx->debug&FF_DEBUG_MMCO)
3296
                av_log(h->s.avctx, AV_LOG_DEBUG, "mmco: unref long failure\n");
3297
            break;
3298
        case MMCO_LONG:
3299
                    // Comment below left from previous code as it is an interresting note.
3300
                    /* First field in pair is in short term list or
3301
                     * at a different long term index.
3302
                     * This is not allowed; see 7.4.3.3, notes 2 and 3.
3303
                     * Report the problem and keep the pair where it is,
3304
                     * and mark this field valid.
3305
                     */
3306

    
3307
            if (h->long_ref[mmco[i].long_arg] != s->current_picture_ptr) {
3308
                remove_long(h, mmco[i].long_arg, 0);
3309

    
3310
                h->long_ref[ mmco[i].long_arg ]= s->current_picture_ptr;
3311
                h->long_ref[ mmco[i].long_arg ]->long_ref=1;
3312
                h->long_ref_count++;
3313
            }
3314

    
3315
            s->current_picture_ptr->reference |= s->picture_structure;
3316
            current_ref_assigned=1;
3317
            break;
3318
        case MMCO_SET_MAX_LONG:
3319
            assert(mmco[i].long_arg <= 16);
3320
            // just remove the long term which index is greater than new max
3321
            for(j = mmco[i].long_arg; j<16; j++){
3322
                remove_long(h, j, 0);
3323
            }
3324
            break;
3325
        case MMCO_RESET:
3326
            while(h->short_ref_count){
3327
                remove_short(h, h->short_ref[0]->frame_num, 0);
3328
            }
3329
            for(j = 0; j < 16; j++) {
3330
                remove_long(h, j, 0);
3331
            }
3332
            s->current_picture_ptr->poc=
3333
            s->current_picture_ptr->field_poc[0]=
3334
            s->current_picture_ptr->field_poc[1]=
3335
            h->poc_lsb=
3336
            h->poc_msb=
3337
            h->frame_num=
3338
            s->current_picture_ptr->frame_num= 0;
3339
            break;
3340
        default: assert(0);
3341
        }
3342
    }
3343

    
3344
    if (!current_ref_assigned) {
3345
        /* Second field of complementary field pair; the first field of
3346
         * which is already referenced. If short referenced, it
3347
         * should be first entry in short_ref. If not, it must exist
3348
         * in long_ref; trying to put it on the short list here is an
3349
         * error in the encoded bit stream (ref: 7.4.3.3, NOTE 2 and 3).
3350
         */
3351
        if (h->short_ref_count && h->short_ref[0] == s->current_picture_ptr) {
3352
            /* Just mark the second field valid */
3353
            s->current_picture_ptr->reference = PICT_FRAME;
3354
        } else if (s->current_picture_ptr->long_ref) {
3355
            av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term reference "
3356
                                             "assignment for second field "
3357
                                             "in complementary field pair "
3358
                                             "(first field is long term)\n");
3359
        } else {
3360
            pic= remove_short(h, s->current_picture_ptr->frame_num, 0);
3361
            if(pic){
3362
                av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term buffer state detected\n");
3363
            }
3364

    
3365
            if(h->short_ref_count)
3366
                memmove(&h->short_ref[1], &h->short_ref[0], h->short_ref_count*sizeof(Picture*));
3367

    
3368
            h->short_ref[0]= s->current_picture_ptr;
3369
            h->short_ref_count++;
3370
            s->current_picture_ptr->reference |= s->picture_structure;
3371
        }
3372
    }
3373

    
3374
    if (h->long_ref_count + h->short_ref_count > h->sps.ref_frame_count){
3375

    
3376
        /* We have too many reference frames, probably due to corrupted
3377
         * stream. Need to discard one frame. Prevents overrun of the
3378
         * short_ref and long_ref buffers.
3379
         */
3380
        av_log(h->s.avctx, AV_LOG_ERROR,
3381
               "number of reference frames exceeds max (probably "
3382
               "corrupt input), discarding one\n");
3383

    
3384
        if (h->long_ref_count && !h->short_ref_count) {
3385
            for (i = 0; i < 16; ++i)
3386
                if (h->long_ref[i])
3387
                    break;
3388

    
3389
            assert(i < 16);
3390
            remove_long(h, i, 0);
3391
        } else {
3392
            pic = h->short_ref[h->short_ref_count - 1];
3393
            remove_short(h, pic->frame_num, 0);
3394
        }
3395
    }
3396

    
3397
    print_short_term(h);
3398
    print_long_term(h);
3399
    return 0;
3400
}
3401

    
3402
static int decode_ref_pic_marking(H264Context *h, GetBitContext *gb){
3403
    MpegEncContext * const s = &h->s;
3404
    int i;
3405

    
3406
    h->mmco_index= 0;
3407
    if(h->nal_unit_type == NAL_IDR_SLICE){ //FIXME fields
3408
        s->broken_link= get_bits1(gb) -1;
3409
        if(get_bits1(gb)){
3410
            h->mmco[0].opcode= MMCO_LONG;
3411
            h->mmco[0].long_arg= 0;
3412
            h->mmco_index= 1;
3413
        }
3414
    }else{
3415
        if(get_bits1(gb)){ // adaptive_ref_pic_marking_mode_flag
3416
            for(i= 0; i<MAX_MMCO_COUNT; i++) {
3417
                MMCOOpcode opcode= get_ue_golomb(gb);
3418

    
3419
                h->mmco[i].opcode= opcode;
3420
                if(opcode==MMCO_SHORT2UNUSED || opcode==MMCO_SHORT2LONG){
3421
                    h->mmco[i].short_pic_num= (h->curr_pic_num - get_ue_golomb(gb) - 1) & (h->max_pic_num - 1);
3422
/*                    if(h->mmco[i].short_pic_num >= h->short_ref_count || h->short_ref[ h->mmco[i].short_pic_num ] == NULL){
3423
                        av_log(s->avctx, AV_LOG_ERROR, "illegal short ref in memory management control operation %d\n", mmco);
3424
                        return -1;
3425
                    }*/
3426
                }
3427
                if(opcode==MMCO_SHORT2LONG || opcode==MMCO_LONG2UNUSED || opcode==MMCO_LONG || opcode==MMCO_SET_MAX_LONG){
3428
                    unsigned int long_arg= get_ue_golomb(gb);
3429
                    if(long_arg >= 32 || (long_arg >= 16 && !(opcode == MMCO_LONG2UNUSED && FIELD_PICTURE))){
3430
                        av_log(h->s.avctx, AV_LOG_ERROR, "illegal long ref in memory management control operation %d\n", opcode);
3431
                        return -1;
3432
                    }
3433
                    h->mmco[i].long_arg= long_arg;
3434
                }
3435

    
3436
                if(opcode > (unsigned)MMCO_LONG){
3437
                    av_log(h->s.avctx, AV_LOG_ERROR, "illegal memory management control operation %d\n", opcode);
3438
                    return -1;
3439
                }
3440
                if(opcode == MMCO_END)
3441
                    break;
3442
            }
3443
            h->mmco_index= i;
3444
        }else{
3445
            assert(h->long_ref_count + h->short_ref_count <= h->sps.ref_frame_count);
3446

    
3447
            if(h->short_ref_count && h->long_ref_count + h->short_ref_count == h->sps.ref_frame_count &&
3448
                    !(FIELD_PICTURE && !s->first_field && s->current_picture_ptr->reference)) {
3449
                h->mmco[0].opcode= MMCO_SHORT2UNUSED;
3450
                h->mmco[0].short_pic_num= h->short_ref[ h->short_ref_count - 1 ]->frame_num;
3451
                h->mmco_index= 1;
3452
                if (FIELD_PICTURE) {
3453
                    h->mmco[0].short_pic_num *= 2;
3454
                    h->mmco[1].opcode= MMCO_SHORT2UNUSED;
3455
                    h->mmco[1].short_pic_num= h->mmco[0].short_pic_num + 1;
3456
                    h->mmco_index= 2;
3457
                }
3458
            }
3459
        }
3460
    }
3461

    
3462
    return 0;
3463
}
3464

    
3465
static int init_poc(H264Context *h){
3466
    MpegEncContext * const s = &h->s;
3467
    const int max_frame_num= 1<<h->sps.log2_max_frame_num;
3468
    int field_poc[2];
3469
    Picture *cur = s->current_picture_ptr;
3470

    
3471
    h->frame_num_offset= h->prev_frame_num_offset;
3472
    if(h->frame_num < h->prev_frame_num)
3473
        h->frame_num_offset += max_frame_num;
3474

    
3475
    if(h->sps.poc_type==0){
3476
        const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
3477

    
3478
        if     (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
3479
            h->poc_msb = h->prev_poc_msb + max_poc_lsb;
3480
        else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
3481
            h->poc_msb = h->prev_poc_msb - max_poc_lsb;
3482
        else
3483
            h->poc_msb = h->prev_poc_msb;
3484
//printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
3485
        field_poc[0] =
3486
        field_poc[1] = h->poc_msb + h->poc_lsb;
3487
        if(s->picture_structure == PICT_FRAME)
3488
            field_poc[1] += h->delta_poc_bottom;
3489
    }else if(h->sps.poc_type==1){
3490
        int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
3491
        int i;
3492

    
3493
        if(h->sps.poc_cycle_length != 0)
3494
            abs_frame_num = h->frame_num_offset + h->frame_num;
3495
        else
3496
            abs_frame_num = 0;
3497

    
3498
        if(h->nal_ref_idc==0 && abs_frame_num > 0)
3499
            abs_frame_num--;
3500

    
3501
        expected_delta_per_poc_cycle = 0;
3502
        for(i=0; i < h->sps.poc_cycle_length; i++)
3503
            expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
3504

    
3505
        if(abs_frame_num > 0){
3506
            int poc_cycle_cnt          = (abs_frame_num - 1) / h->sps.poc_cycle_length;
3507
            int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
3508

    
3509
            expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
3510
            for(i = 0; i <= frame_num_in_poc_cycle; i++)
3511
                expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
3512
        } else
3513
            expectedpoc = 0;
3514

    
3515
        if(h->nal_ref_idc == 0)
3516
            expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
3517

    
3518
        field_poc[0] = expectedpoc + h->delta_poc[0];
3519
        field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
3520

    
3521
        if(s->picture_structure == PICT_FRAME)
3522
            field_poc[1] += h->delta_poc[1];
3523
    }else{
3524
        int poc= 2*(h->frame_num_offset + h->frame_num);
3525

    
3526
        if(!h->nal_ref_idc)
3527
            poc--;
3528

    
3529
        field_poc[0]= poc;
3530
        field_poc[1]= poc;
3531
    }
3532

    
3533
    if(s->picture_structure != PICT_BOTTOM_FIELD)
3534
        s->current_picture_ptr->field_poc[0]= field_poc[0];
3535
    if(s->picture_structure != PICT_TOP_FIELD)
3536
        s->current_picture_ptr->field_poc[1]= field_poc[1];
3537
    cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
3538

    
3539
    return 0;
3540
}
3541

    
3542

    
3543
/**
3544
 * initialize scan tables
3545
 */
3546
static void init_scan_tables(H264Context *h){
3547
    MpegEncContext * const s = &h->s;
3548
    int i;
3549
    if(s->dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
3550
        memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
3551
        memcpy(h-> field_scan,  field_scan, 16*sizeof(uint8_t));
3552
    }else{
3553
        for(i=0; i<16; i++){
3554
#define T(x) (x>>2) | ((x<<2) & 0xF)
3555
            h->zigzag_scan[i] = T(zigzag_scan[i]);
3556
            h-> field_scan[i] = T( field_scan[i]);
3557
#undef T
3558
        }
3559
    }
3560
    if(s->dsp.h264_idct8_add == ff_h264_idct8_add_c){
3561
        memcpy(h->zigzag_scan8x8,       zigzag_scan8x8,       64*sizeof(uint8_t));
3562
        memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
3563
        memcpy(h->field_scan8x8,        field_scan8x8,        64*sizeof(uint8_t));
3564
        memcpy(h->field_scan8x8_cavlc,  field_scan8x8_cavlc,  64*sizeof(uint8_t));
3565
    }else{
3566
        for(i=0; i<64; i++){
3567
#define T(x) (x>>3) | ((x&7)<<3)
3568
            h->zigzag_scan8x8[i]       = T(zigzag_scan8x8[i]);
3569
            h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
3570
            h->field_scan8x8[i]        = T(field_scan8x8[i]);
3571
            h->field_scan8x8_cavlc[i]  = T(field_scan8x8_cavlc[i]);
3572
#undef T
3573
        }
3574
    }
3575
    if(h->sps.transform_bypass){ //FIXME same ugly
3576
        h->zigzag_scan_q0          = zigzag_scan;
3577
        h->zigzag_scan8x8_q0       = zigzag_scan8x8;
3578
        h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
3579
        h->field_scan_q0           = field_scan;
3580
        h->field_scan8x8_q0        = field_scan8x8;
3581
        h->field_scan8x8_cavlc_q0  = field_scan8x8_cavlc;
3582
    }else{
3583
        h->zigzag_scan_q0          = h->zigzag_scan;
3584
        h->zigzag_scan8x8_q0       = h->zigzag_scan8x8;
3585
        h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
3586
        h->field_scan_q0           = h->field_scan;
3587
        h->field_scan8x8_q0        = h->field_scan8x8;
3588
        h->field_scan8x8_cavlc_q0  = h->field_scan8x8_cavlc;
3589
    }
3590
}
3591

    
3592
/**
3593
 * Replicates H264 "master" context to thread contexts.
3594
 */
3595
static void clone_slice(H264Context *dst, H264Context *src)
3596
{
3597
    memcpy(dst->block_offset,     src->block_offset, sizeof(dst->block_offset));
3598
    dst->s.current_picture_ptr  = src->s.current_picture_ptr;
3599
    dst->s.current_picture      = src->s.current_picture;
3600
    dst->s.linesize             = src->s.linesize;
3601
    dst->s.uvlinesize           = src->s.uvlinesize;
3602
    dst->s.first_field          = src->s.first_field;
3603

    
3604
    dst->prev_poc_msb           = src->prev_poc_msb;
3605
    dst->prev_poc_lsb           = src->prev_poc_lsb;
3606
    dst->prev_frame_num_offset  = src->prev_frame_num_offset;
3607
    dst->prev_frame_num         = src->prev_frame_num;
3608
    dst->short_ref_count        = src->short_ref_count;
3609

    
3610
    memcpy(dst->short_ref,        src->short_ref,        sizeof(dst->short_ref));
3611
    memcpy(dst->long_ref,         src->long_ref,         sizeof(dst->long_ref));
3612
    memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
3613
    memcpy(dst->ref_list,         src->ref_list,         sizeof(dst->ref_list));
3614

    
3615
    memcpy(dst->dequant4_coeff,   src->dequant4_coeff,   sizeof(src->dequant4_coeff));
3616
    memcpy(dst->dequant8_coeff,   src->dequant8_coeff,   sizeof(src->dequant8_coeff));
3617
}
3618

    
3619
/**
3620
 * decodes a slice header.
3621
 * This will also call MPV_common_init() and frame_start() as needed.
3622
 *
3623
 * @param h h264context
3624
 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
3625
 *
3626
 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
3627
 */
3628
static int decode_slice_header(H264Context *h, H264Context *h0){
3629
    MpegEncContext * const s = &h->s;
3630
    MpegEncContext * const s0 = &h0->s;
3631
    unsigned int first_mb_in_slice;
3632
    unsigned int pps_id;
3633
    int num_ref_idx_active_override_flag;
3634
    static const uint8_t slice_type_map[5]= {FF_P_TYPE, FF_B_TYPE, FF_I_TYPE, FF_SP_TYPE, FF_SI_TYPE};
3635
    unsigned int slice_type, tmp, i, j;
3636
    int default_ref_list_done = 0;
3637
    int last_pic_structure;
3638

    
3639
    s->dropable= h->nal_ref_idc == 0;
3640

    
3641
    if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
3642
        s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
3643
        s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
3644
    }else{
3645
        s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
3646
        s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
3647
    }
3648

    
3649
    first_mb_in_slice= get_ue_golomb(&s->gb);
3650

    
3651
    if((s->flags2 & CODEC_FLAG2_CHUNKS) && first_mb_in_slice == 0){
3652
        h0->current_slice = 0;
3653
        if (!s0->first_field)
3654
            s->current_picture_ptr= NULL;
3655
    }
3656

    
3657
    slice_type= get_ue_golomb(&s->gb);
3658
    if(slice_type > 9){
3659
        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);
3660
        return -1;
3661
    }
3662
    if(slice_type > 4){
3663
        slice_type -= 5;
3664
        h->slice_type_fixed=1;
3665
    }else
3666
        h->slice_type_fixed=0;
3667

    
3668
    slice_type= slice_type_map[ slice_type ];
3669
    if (slice_type == FF_I_TYPE
3670
        || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
3671
        default_ref_list_done = 1;
3672
    }
3673
    h->slice_type= slice_type;
3674
    h->slice_type_nos= slice_type & 3;
3675

    
3676
    s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
3677
    if (s->pict_type == FF_B_TYPE && s0->last_picture_ptr == NULL) {
3678
        av_log(h->s.avctx, AV_LOG_ERROR,
3679
               "B picture before any references, skipping\n");
3680
        return -1;
3681
    }
3682

    
3683
    pps_id= get_ue_golomb(&s->gb);
3684
    if(pps_id>=MAX_PPS_COUNT){
3685
        av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
3686
        return -1;
3687
    }
3688
    if(!h0->pps_buffers[pps_id]) {
3689
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS referenced\n");
3690
        return -1;
3691
    }
3692
    h->pps= *h0->pps_buffers[pps_id];
3693

    
3694
    if(!h0->sps_buffers[h->pps.sps_id]) {
3695
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS referenced\n");
3696
        return -1;
3697
    }
3698
    h->sps = *h0->sps_buffers[h->pps.sps_id];
3699

    
3700
    if(h == h0 && h->dequant_coeff_pps != pps_id){
3701
        h->dequant_coeff_pps = pps_id;
3702
        init_dequant_tables(h);
3703
    }
3704

    
3705
    s->mb_width= h->sps.mb_width;
3706
    s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
3707

    
3708
    h->b_stride=  s->mb_width*4;
3709
    h->b8_stride= s->mb_width*2;
3710

    
3711
    s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
3712
    if(h->sps.frame_mbs_only_flag)
3713
        s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
3714
    else
3715
        s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
3716

    
3717
    if (s->context_initialized
3718
        && (   s->width != s->avctx->width || s->height != s->avctx->height)) {
3719
        if(h != h0)
3720
            return -1;   // width / height changed during parallelized decoding
3721
        free_tables(h);
3722
        MPV_common_end(s);
3723
    }
3724
    if (!s->context_initialized) {
3725
        if(h != h0)
3726
            return -1;  // we cant (re-)initialize context during parallel decoding
3727
        if (MPV_common_init(s) < 0)
3728
            return -1;
3729
        s->first_field = 0;
3730

    
3731
        init_scan_tables(h);
3732
        alloc_tables(h);
3733

    
3734
        for(i = 1; i < s->avctx->thread_count; i++) {
3735
            H264Context *c;
3736
            c = h->thread_context[i] = av_malloc(sizeof(H264Context));
3737
            memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
3738
            memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
3739
            c->sps = h->sps;
3740
            c->pps = h->pps;
3741
            init_scan_tables(c);
3742
            clone_tables(c, h);
3743
        }
3744

    
3745
        for(i = 0; i < s->avctx->thread_count; i++)
3746
            if(context_init(h->thread_context[i]) < 0)
3747
                return -1;
3748

    
3749
        s->avctx->width = s->width;
3750
        s->avctx->height = s->height;
3751
        s->avctx->sample_aspect_ratio= h->sps.sar;
3752
        if(!s->avctx->sample_aspect_ratio.den)
3753
            s->avctx->sample_aspect_ratio.den = 1;
3754

    
3755
        if(h->sps.timing_info_present_flag){
3756
            s->avctx->time_base= (AVRational){h->sps.num_units_in_tick * 2, h->sps.time_scale};
3757
            if(h->x264_build > 0 && h->x264_build < 44)
3758
                s->avctx->time_base.den *= 2;
3759
            av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
3760
                      s->avctx->time_base.num, s->avctx->time_base.den, 1<<30);
3761
        }
3762
    }
3763

    
3764
    h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
3765

    
3766
    h->mb_mbaff = 0;
3767
    h->mb_aff_frame = 0;
3768
    last_pic_structure = s0->picture_structure;
3769
    if(h->sps.frame_mbs_only_flag){
3770
        s->picture_structure= PICT_FRAME;
3771
    }else{
3772
        if(get_bits1(&s->gb)) { //field_pic_flag
3773
            s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
3774
        } else {
3775
            s->picture_structure= PICT_FRAME;
3776
            h->mb_aff_frame = h->sps.mb_aff;
3777
        }
3778
    }
3779
    h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
3780

    
3781
    if(h0->current_slice == 0){
3782
        while(h->frame_num !=  h->prev_frame_num &&
3783
              h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
3784
            av_log(NULL, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
3785
            frame_start(h);
3786
            h->prev_frame_num++;
3787
            h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
3788
            s->current_picture_ptr->frame_num= h->prev_frame_num;
3789
            execute_ref_pic_marking(h, NULL, 0);
3790
        }
3791

    
3792
        /* See if we have a decoded first field looking for a pair... */
3793
        if (s0->first_field) {
3794
            assert(s0->current_picture_ptr);
3795
            assert(s0->current_picture_ptr->data[0]);
3796
            assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
3797

    
3798
            /* figure out if we have a complementary field pair */
3799
            if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
3800
                /*
3801
                 * Previous field is unmatched. Don't display it, but let it
3802
                 * remain for reference if marked as such.
3803
                 */
3804
                s0->current_picture_ptr = NULL;
3805
                s0->first_field = FIELD_PICTURE;
3806

    
3807
            } else {
3808
                if (h->nal_ref_idc &&
3809
                        s0->current_picture_ptr->reference &&
3810
                        s0->current_picture_ptr->frame_num != h->frame_num) {
3811
                    /*
3812
                     * This and previous field were reference, but had
3813
                     * different frame_nums. Consider this field first in
3814
                     * pair. Throw away previous field except for reference
3815
                     * purposes.
3816
                     */
3817
                    s0->first_field = 1;
3818
                    s0->current_picture_ptr = NULL;
3819

    
3820
                } else {
3821
                    /* Second field in complementary pair */
3822
                    s0->first_field = 0;
3823
                }
3824
            }
3825

    
3826
        } else {
3827
            /* Frame or first field in a potentially complementary pair */
3828
            assert(!s0->current_picture_ptr);
3829
            s0->first_field = FIELD_PICTURE;
3830
        }
3831

    
3832
        if((!FIELD_PICTURE || s0->first_field) && frame_start(h) < 0) {
3833
            s0->first_field = 0;
3834
            return -1;
3835
        }
3836
    }
3837
    if(h != h0)
3838
        clone_slice(h, h0);
3839

    
3840
    s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
3841

    
3842
    assert(s->mb_num == s->mb_width * s->mb_height);
3843
    if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
3844
       first_mb_in_slice                    >= s->mb_num){
3845
        av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
3846
        return -1;
3847
    }
3848
    s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
3849
    s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
3850
    if (s->picture_structure == PICT_BOTTOM_FIELD)
3851
        s->resync_mb_y = s->mb_y = s->mb_y + 1;
3852
    assert(s->mb_y < s->mb_height);
3853

    
3854
    if(s->picture_structure==PICT_FRAME){
3855
        h->curr_pic_num=   h->frame_num;
3856
        h->max_pic_num= 1<< h->sps.log2_max_frame_num;
3857
    }else{
3858
        h->curr_pic_num= 2*h->frame_num + 1;
3859
        h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
3860
    }
3861

    
3862
    if(h->nal_unit_type == NAL_IDR_SLICE){
3863
        get_ue_golomb(&s->gb); /* idr_pic_id */
3864
    }
3865

    
3866
    if(h->sps.poc_type==0){
3867
        h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
3868

    
3869
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
3870
            h->delta_poc_bottom= get_se_golomb(&s->gb);
3871
        }
3872
    }
3873

    
3874
    if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
3875
        h->delta_poc[0]= get_se_golomb(&s->gb);
3876

    
3877
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
3878
            h->delta_poc[1]= get_se_golomb(&s->gb);
3879
    }
3880

    
3881
    init_poc(h);
3882

    
3883
    if(h->pps.redundant_pic_cnt_present){
3884
        h->redundant_pic_count= get_ue_golomb(&s->gb);
3885
    }
3886

    
3887
    //set defaults, might be overridden a few lines later
3888
    h->ref_count[0]= h->pps.ref_count[0];
3889
    h->ref_count[1]= h->pps.ref_count[1];
3890

    
3891
    if(h->slice_type_nos != FF_I_TYPE){
3892
        if(h->slice_type_nos == FF_B_TYPE){
3893
            h->direct_spatial_mv_pred= get_bits1(&s->gb);
3894
        }
3895
        num_ref_idx_active_override_flag= get_bits1(&s->gb);
3896

    
3897
        if(num_ref_idx_active_override_flag){
3898
            h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
3899
            if(h->slice_type_nos==FF_B_TYPE)
3900
                h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
3901

    
3902
            if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
3903
                av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
3904
                h->ref_count[0]= h->ref_count[1]= 1;
3905
                return -1;
3906
            }
3907
        }
3908
        if(h->slice_type_nos == FF_B_TYPE)
3909
            h->list_count= 2;
3910
        else
3911
            h->list_count= 1;
3912
    }else
3913
        h->list_count= 0;
3914

    
3915
    if(!default_ref_list_done){
3916
        fill_default_ref_list(h);
3917
    }
3918

    
3919
    if(h->slice_type_nos!=FF_I_TYPE && decode_ref_pic_list_reordering(h) < 0)
3920
        return -1;
3921

    
3922
    if(h->slice_type_nos!=FF_I_TYPE){
3923
        s->last_picture_ptr= &h->ref_list[0][0];
3924
        ff_copy_picture(&s->last_picture, s->last_picture_ptr);
3925
    }
3926
    if(h->slice_type_nos==FF_B_TYPE){
3927
        s->next_picture_ptr= &h->ref_list[1][0];
3928
        ff_copy_picture(&s->next_picture, s->next_picture_ptr);
3929
    }
3930

    
3931
    if(   (h->pps.weighted_pred          && h->slice_type_nos == FF_P_TYPE )
3932
       ||  (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
3933
        pred_weight_table(h);
3934
    else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE)
3935
        implicit_weight_table(h);
3936
    else
3937
        h->use_weight = 0;
3938

    
3939
    if(h->nal_ref_idc)
3940
        decode_ref_pic_marking(h0, &s->gb);
3941

    
3942
    if(FRAME_MBAFF)
3943
        fill_mbaff_ref_list(h);
3944

    
3945
    if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
3946
        direct_dist_scale_factor(h);
3947
    direct_ref_list_init(h);
3948

    
3949
    if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
3950
        tmp = get_ue_golomb(&s->gb);
3951
        if(tmp > 2){
3952
            av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
3953
            return -1;
3954
        }
3955
        h->cabac_init_idc= tmp;
3956
    }
3957

    
3958
    h->last_qscale_diff = 0;
3959
    tmp = h->pps.init_qp + get_se_golomb(&s->gb);
3960
    if(tmp>51){
3961
        av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
3962
        return -1;
3963
    }
3964
    s->qscale= tmp;
3965
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
3966
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
3967
    //FIXME qscale / qp ... stuff
3968
    if(h->slice_type == FF_SP_TYPE){
3969
        get_bits1(&s->gb); /* sp_for_switch_flag */
3970
    }
3971
    if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
3972
        get_se_golomb(&s->gb); /* slice_qs_delta */
3973
    }
3974

    
3975
    h->deblocking_filter = 1;
3976
    h->slice_alpha_c0_offset = 0;
3977
    h->slice_beta_offset = 0;
3978
    if( h->pps.deblocking_filter_parameters_present ) {
3979
        tmp= get_ue_golomb(&s->gb);
3980
        if(tmp > 2){
3981
            av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
3982
            return -1;
3983
        }
3984
        h->deblocking_filter= tmp;
3985
        if(h->deblocking_filter < 2)
3986
            h->deblocking_filter^= 1; // 1<->0
3987

    
3988
        if( h->deblocking_filter ) {
3989
            h->slice_alpha_c0_offset = get_se_golomb(&s->gb) << 1;
3990
            h->slice_beta_offset = get_se_golomb(&s->gb) << 1;
3991
        }
3992
    }
3993

    
3994
    if(   s->avctx->skip_loop_filter >= AVDISCARD_ALL
3995
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
3996
       ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR  && h->slice_type_nos == FF_B_TYPE)
3997
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
3998
        h->deblocking_filter= 0;
3999

    
4000
    if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
4001
        if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
4002
            /* Cheat slightly for speed:
4003
               Do not bother to deblock across slices. */
4004
            h->deblocking_filter = 2;
4005
        } else {
4006
            h0->max_contexts = 1;
4007
            if(!h0->single_decode_warning) {
4008
                av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
4009
                h0->single_decode_warning = 1;
4010
            }
4011
            if(h != h0)
4012
                return 1; // deblocking switched inside frame
4013
        }
4014
    }
4015

    
4016
#if 0 //FMO
4017
    if( h->pps.num_slice_groups > 1  && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
4018
        slice_group_change_cycle= get_bits(&s->gb, ?);
4019
#endif
4020

    
4021
    h0->last_slice_type = slice_type;
4022
    h->slice_num = ++h0->current_slice;
4023
    if(h->slice_num >= MAX_SLICES){
4024
        av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
4025
    }
4026

    
4027
    for(j=0; j<2; j++){
4028
        int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
4029
        ref2frm[0]=
4030
        ref2frm[1]= -1;
4031
        for(i=0; i<16; i++)
4032
            ref2frm[i+2]= 4*h->ref_list[j][i].frame_num
4033
                          +(h->ref_list[j][i].reference&3);
4034
        ref2frm[18+0]=
4035
        ref2frm[18+1]= -1;
4036
        for(i=16; i<48; i++)
4037
            ref2frm[i+4]= 4*h->ref_list[j][i].frame_num
4038
                          +(h->ref_list[j][i].reference&3);
4039
    }
4040

    
4041
    h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
4042
    h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
4043

    
4044
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
4045
        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",
4046
               h->slice_num,
4047
               (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
4048
               first_mb_in_slice,
4049
               av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
4050
               pps_id, h->frame_num,
4051
               s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
4052
               h->ref_count[0], h->ref_count[1],
4053
               s->qscale,
4054
               h->deblocking_filter, h->slice_alpha_c0_offset/2, h->slice_beta_offset/2,
4055
               h->use_weight,
4056
               h->use_weight==1 && h->use_weight_chroma ? "c" : "",
4057
               h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
4058
               );
4059
    }
4060

    
4061
    return 0;
4062
}
4063

    
4064
/**
4065
 *
4066
 */
4067
static inline int get_level_prefix(GetBitContext *gb){
4068
    unsigned int buf;
4069
    int log;
4070

    
4071
    OPEN_READER(re, gb);
4072
    UPDATE_CACHE(re, gb);
4073
    buf=GET_CACHE(re, gb);
4074

    
4075
    log= 32 - av_log2(buf);
4076
#ifdef TRACE
4077
    print_bin(buf>>(32-log), log);
4078
    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__);
4079
#endif
4080

    
4081
    LAST_SKIP_BITS(re, gb, log);
4082
    CLOSE_READER(re, gb);
4083

    
4084
    return log-1;
4085
}
4086

    
4087
static inline int get_dct8x8_allowed(H264Context *h){
4088
    int i;
4089
    for(i=0; i<4; i++){
4090
        if(!IS_SUB_8X8(h->sub_mb_type[i])
4091
           || (!h->sps.direct_8x8_inference_flag && IS_DIRECT(h->sub_mb_type[i])))
4092
            return 0;
4093
    }
4094
    return 1;
4095
}
4096

    
4097
/**
4098
 * decodes a residual block.
4099
 * @param n block index
4100
 * @param scantable scantable
4101
 * @param max_coeff number of coefficients in the block
4102
 * @return <0 if an error occurred
4103
 */
4104
static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff){
4105
    MpegEncContext * const s = &h->s;
4106
    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};
4107
    int level[16];
4108
    int zeros_left, coeff_num, coeff_token, total_coeff, i, j, trailing_ones, run_before;
4109

    
4110
    //FIXME put trailing_onex into the context
4111

    
4112
    if(n == CHROMA_DC_BLOCK_INDEX){
4113
        coeff_token= get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1);
4114
        total_coeff= coeff_token>>2;
4115
    }else{
4116
        if(n == LUMA_DC_BLOCK_INDEX){
4117
            total_coeff= pred_non_zero_count(h, 0);
4118
            coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
4119
            total_coeff= coeff_token>>2;
4120
        }else{
4121
            total_coeff= pred_non_zero_count(h, n);
4122
            coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
4123
            total_coeff= coeff_token>>2;
4124
            h->non_zero_count_cache[ scan8[n] ]= total_coeff;
4125
        }
4126
    }
4127

    
4128
    //FIXME set last_non_zero?
4129

    
4130
    if(total_coeff==0)
4131
        return 0;
4132
    if(total_coeff > (unsigned)max_coeff) {
4133
        av_log(h->s.avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", s->mb_x, s->mb_y, total_coeff);
4134
        return -1;
4135
    }
4136

    
4137
    trailing_ones= coeff_token&3;
4138
    tprintf(h->s.avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff);
4139
    assert(total_coeff<=16);
4140

    
4141
    for(i=0; i<trailing_ones; i++){
4142
        level[i]= 1 - 2*get_bits1(gb);
4143
    }
4144

    
4145
    if(i<total_coeff) {
4146
        int level_code, mask;
4147
        int suffix_length = total_coeff > 10 && trailing_ones < 3;
4148
        int prefix= get_level_prefix(gb);
4149

    
4150
        //first coefficient has suffix_length equal to 0 or 1
4151
        if(prefix<14){ //FIXME try to build a large unified VLC table for all this
4152
            if(suffix_length)
4153
                level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
4154
            else
4155
                level_code= (prefix<<suffix_length); //part
4156
        }else if(prefix==14){
4157
            if(suffix_length)
4158
                level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
4159
            else
4160
                level_code= prefix + get_bits(gb, 4); //part
4161
        }else{
4162
            level_code= (15<<suffix_length) + get_bits(gb, prefix-3); //part
4163
            if(suffix_length==0) level_code+=15; //FIXME doesn't make (much)sense
4164
            if(prefix>=16)
4165
                level_code += (1<<(prefix-3))-4096;
4166
        }
4167

    
4168
        if(trailing_ones < 3) level_code += 2;
4169

    
4170
        suffix_length = 1;
4171
        if(level_code > 5)
4172
            suffix_length++;
4173
        mask= -(level_code&1);
4174
        level[i]= (((2+level_code)>>1) ^ mask) - mask;
4175
        i++;
4176

    
4177
        //remaining coefficients have suffix_length > 0
4178
        for(;i<total_coeff;i++) {
4179
            static const int suffix_limit[7] = {0,5,11,23,47,95,INT_MAX };
4180
            prefix = get_level_prefix(gb);
4181
            if(prefix<15){
4182
                level_code = (prefix<<suffix_length) + get_bits(gb, suffix_length);
4183
            }else{
4184
                level_code = (15<<suffix_length) + get_bits(gb, prefix-3);
4185
                if(prefix>=16)
4186
                    level_code += (1<<(prefix-3))-4096;
4187
            }
4188
            mask= -(level_code&1);
4189
            level[i]= (((2+level_code)>>1) ^ mask) - mask;
4190
            if(level_code > suffix_limit[suffix_length])
4191
                suffix_length++;
4192
        }
4193
    }
4194

    
4195
    if(total_coeff == max_coeff)
4196
        zeros_left=0;
4197
    else{
4198
        if(n == CHROMA_DC_BLOCK_INDEX)
4199
            zeros_left= get_vlc2(gb, chroma_dc_total_zeros_vlc[ total_coeff-1 ].table, CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1);
4200
        else
4201
            zeros_left= get_vlc2(gb, total_zeros_vlc[ total_coeff-1 ].table, TOTAL_ZEROS_VLC_BITS, 1);
4202
    }
4203

    
4204
    coeff_num = zeros_left + total_coeff - 1;
4205
    j = scantable[coeff_num];
4206
    if(n > 24){
4207
        block[j] = level[0];
4208
        for(i=1;i<total_coeff;i++) {
4209
            if(zeros_left <= 0)
4210
                run_before = 0;
4211
            else if(zeros_left < 7){
4212
                run_before= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
4213
            }else{
4214
                run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
4215
            }
4216
            zeros_left -= run_before;
4217
            coeff_num -= 1 + run_before;
4218
            j= scantable[ coeff_num ];
4219

    
4220
            block[j]= level[i];
4221
        }
4222
    }else{
4223
        block[j] = (level[0] * qmul[j] + 32)>>6;
4224
        for(i=1;i<total_coeff;i++) {
4225
            if(zeros_left <= 0)
4226
                run_before = 0;
4227
            else if(zeros_left < 7){
4228
                run_before= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
4229
            }else{
4230
                run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
4231
            }
4232
            zeros_left -= run_before;
4233
            coeff_num -= 1 + run_before;
4234
            j= scantable[ coeff_num ];
4235

    
4236
            block[j]= (level[i] * qmul[j] + 32)>>6;
4237
        }
4238
    }
4239

    
4240
    if(zeros_left<0){
4241
        av_log(h->s.avctx, AV_LOG_ERROR, "negative number of zero coeffs at %d %d\n", s->mb_x, s->mb_y);
4242
        return -1;
4243
    }
4244

    
4245
    return 0;
4246
}
4247

    
4248
static void predict_field_decoding_flag(H264Context *h){
4249
    MpegEncContext * const s = &h->s;
4250
    const int mb_xy= h->mb_xy;
4251
    int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
4252
                ? s->current_picture.mb_type[mb_xy-1]
4253
                : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
4254
                ? s->current_picture.mb_type[mb_xy-s->mb_stride]
4255
                : 0;
4256
    h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
4257
}
4258

    
4259
/**
4260
 * decodes a P_SKIP or B_SKIP macroblock
4261
 */
4262
static void decode_mb_skip(H264Context *h){
4263
    MpegEncContext * const s = &h->s;
4264
    const int mb_xy= h->mb_xy;
4265
    int mb_type=0;
4266

    
4267
    memset(h->non_zero_count[mb_xy], 0, 16);
4268
    memset(h->non_zero_count_cache + 8, 0, 8*5); //FIXME ugly, remove pfui
4269

    
4270
    if(MB_FIELD)
4271
        mb_type|= MB_TYPE_INTERLACED;
4272

    
4273
    if( h->slice_type_nos == FF_B_TYPE )
4274
    {
4275
        // just for fill_caches. pred_direct_motion will set the real mb_type
4276
        mb_type|= MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2|MB_TYPE_SKIP;
4277

    
4278
        fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ...
4279
        pred_direct_motion(h, &mb_type);
4280
        mb_type|= MB_TYPE_SKIP;
4281
    }
4282
    else
4283
    {
4284
        int mx, my;
4285
        mb_type|= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P1L0|MB_TYPE_SKIP;
4286

    
4287
        fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ...
4288
        pred_pskip_motion(h, &mx, &my);
4289
        fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);
4290
        fill_rectangle(  h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mx,my), 4);
4291
    }
4292

    
4293
    write_back_motion(h, mb_type);
4294
    s->current_picture.mb_type[mb_xy]= mb_type;
4295
    s->current_picture.qscale_table[mb_xy]= s->qscale;
4296
    h->slice_table[ mb_xy ]= h->slice_num;
4297
    h->prev_mb_skipped= 1;
4298
}
4299

    
4300
/**
4301
 * decodes a macroblock
4302
 * @returns 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
4303
 */
4304
static int decode_mb_cavlc(H264Context *h){
4305
    MpegEncContext * const s = &h->s;
4306
    int mb_xy;
4307
    int partition_count;
4308
    unsigned int mb_type, cbp;
4309
    int dct8x8_allowed= h->pps.transform_8x8_mode;
4310

    
4311
    mb_xy = h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;
4312

    
4313
    s->dsp.clear_blocks(h->mb); //FIXME avoid if already clear (move after skip handlong?
4314

    
4315
    tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
4316
    cbp = 0; /* avoid warning. FIXME: find a solution without slowing
4317
                down the code */
4318
    if(h->slice_type_nos != FF_I_TYPE){
4319
        if(s->mb_skip_run==-1)
4320
            s->mb_skip_run= get_ue_golomb(&s->gb);
4321

    
4322
        if (s->mb_skip_run--) {
4323
            if(FRAME_MBAFF && (s->mb_y&1) == 0){
4324
                if(s->mb_skip_run==0)
4325
                    h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb);
4326
                else
4327
                    predict_field_decoding_flag(h);
4328
            }
4329
            decode_mb_skip(h);
4330
            return 0;
4331
        }
4332
    }
4333
    if(FRAME_MBAFF){
4334
        if( (s->mb_y&1) == 0 )
4335
            h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb);
4336
    }
4337

    
4338
    h->prev_mb_skipped= 0;
4339

    
4340
    mb_type= get_ue_golomb(&s->gb);
4341
    if(h->slice_type_nos == FF_B_TYPE){
4342
        if(mb_type < 23){
4343
            partition_count= b_mb_type_info[mb_type].partition_count;
4344
            mb_type=         b_mb_type_info[mb_type].type;
4345
        }else{
4346
            mb_type -= 23;
4347
            goto decode_intra_mb;
4348
        }
4349
    }else if(h->slice_type_nos == FF_P_TYPE){
4350
        if(mb_type < 5){
4351
            partition_count= p_mb_type_info[mb_type].partition_count;
4352
            mb_type=         p_mb_type_info[mb_type].type;
4353
        }else{
4354
            mb_type -= 5;
4355
            goto decode_intra_mb;
4356
        }
4357
    }else{
4358
       assert(h->slice_type_nos == FF_I_TYPE);
4359
        if(h->slice_type == FF_SI_TYPE && mb_type)
4360
            mb_type--;
4361
decode_intra_mb:
4362
        if(mb_type > 25){
4363
            av_log(h->s.avctx, AV_LOG_ERROR, "mb_type %d in %c slice too large at %d %d\n", mb_type, av_get_pict_type_char(h->slice_type), s->mb_x, s->mb_y);
4364
            return -1;
4365
        }
4366
        partition_count=0;
4367
        cbp= i_mb_type_info[mb_type].cbp;
4368
        h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode;
4369
        mb_type= i_mb_type_info[mb_type].type;
4370
    }
4371

    
4372
    if(MB_FIELD)
4373
        mb_type |= MB_TYPE_INTERLACED;
4374

    
4375
    h->slice_table[ mb_xy ]= h->slice_num;
4376

    
4377
    if(IS_INTRA_PCM(mb_type)){
4378
        unsigned int x;
4379

    
4380
        // We assume these blocks are very rare so we do not optimize it.
4381
        align_get_bits(&s->gb);
4382

    
4383
        // The pixels are stored in the same order as levels in h->mb array.
4384
        for(x=0; x < (CHROMA ? 384 : 256); x++){
4385
            ((uint8_t*)h->mb)[x]= get_bits(&s->gb, 8);
4386
        }
4387

    
4388
        // In deblocking, the quantizer is 0
4389
        s->current_picture.qscale_table[mb_xy]= 0;
4390
        // All coeffs are present
4391
        memset(h->non_zero_count[mb_xy], 16, 16);
4392

    
4393
        s->current_picture.mb_type[mb_xy]= mb_type;
4394
        return 0;
4395
    }
4396

    
4397
    if(MB_MBAFF){
4398
        h->ref_count[0] <<= 1;
4399
        h->ref_count[1] <<= 1;
4400
    }
4401

    
4402
    fill_caches(h, mb_type, 0);
4403

    
4404
    //mb_pred
4405
    if(IS_INTRA(mb_type)){
4406
        int pred_mode;
4407
//            init_top_left_availability(h);
4408
        if(IS_INTRA4x4(mb_type)){
4409
            int i;
4410
            int di = 1;
4411
            if(dct8x8_allowed && get_bits1(&s->gb)){
4412
                mb_type |= MB_TYPE_8x8DCT;
4413
                di = 4;
4414
            }
4415

    
4416
//                fill_intra4x4_pred_table(h);
4417
            for(i=0; i<16; i+=di){
4418
                int mode= pred_intra_mode(h, i);
4419

    
4420
                if(!get_bits1(&s->gb)){
4421
                    const int rem_mode= get_bits(&s->gb, 3);
4422
                    mode = rem_mode + (rem_mode >= mode);
4423
                }
4424

    
4425
                if(di==4)
4426
                    fill_rectangle( &h->intra4x4_pred_mode_cache[ scan8[i] ], 2, 2, 8, mode, 1 );
4427
                else
4428
                    h->intra4x4_pred_mode_cache[ scan8[i] ] = mode;
4429
            }
4430
            write_back_intra_pred_mode(h);
4431
            if( check_intra4x4_pred_mode(h) < 0)
4432
                return -1;
4433
        }else{
4434
            h->intra16x16_pred_mode= check_intra_pred_mode(h, h->intra16x16_pred_mode);
4435
            if(h->intra16x16_pred_mode < 0)
4436
                return -1;
4437
        }
4438
        if(CHROMA){
4439
            pred_mode= check_intra_pred_mode(h, get_ue_golomb(&s->gb));
4440
            if(pred_mode < 0)
4441
                return -1;
4442
            h->chroma_pred_mode= pred_mode;
4443
        }
4444
    }else if(partition_count==4){
4445
        int i, j, sub_partition_count[4], list, ref[2][4];
4446

    
4447
        if(h->slice_type_nos == FF_B_TYPE){
4448
            for(i=0; i<4; i++){
4449
                h->sub_mb_type[i]= get_ue_golomb(&s->gb);
4450
                if(h->sub_mb_type[i] >=13){
4451
                    av_log(h->s.avctx, AV_LOG_ERROR, "B sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y);
4452
                    return -1;
4453
                }
4454
                sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
4455
                h->sub_mb_type[i]=      b_sub_mb_type_info[ h->sub_mb_type[i] ].type;
4456
            }
4457
            if(   IS_DIRECT(h->sub_mb_type[0]) || IS_DIRECT(h->sub_mb_type[1])
4458
               || IS_DIRECT(h->sub_mb_type[2]) || IS_DIRECT(h->sub_mb_type[3])) {
4459
                pred_direct_motion(h, &mb_type);
4460
                h->ref_cache[0][scan8[4]] =
4461
                h->ref_cache[1][scan8[4]] =
4462
                h->ref_cache[0][scan8[12]] =
4463
                h->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE;
4464
            }
4465
        }else{
4466
            assert(h->slice_type_nos == FF_P_TYPE); //FIXME SP correct ?
4467
            for(i=0; i<4; i++){
4468
                h->sub_mb_type[i]= get_ue_golomb(&s->gb);
4469