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1
/*
2
 * H.26L/H.264/AVC/JVT/14496-10/... 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.
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 *
17
 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20
 */
21

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

    
28
#include "libavutil/imgutils.h"
29
#include "internal.h"
30
#include "dsputil.h"
31
#include "avcodec.h"
32
#include "mpegvideo.h"
33
#include "h264.h"
34
#include "h264data.h"
35
#include "h264_mvpred.h"
36
#include "golomb.h"
37
#include "mathops.h"
38
#include "rectangle.h"
39
#include "thread.h"
40
#include "vdpau_internal.h"
41
#include "libavutil/avassert.h"
42

    
43
#include "cabac.h"
44

    
45
//#undef NDEBUG
46
#include <assert.h>
47

    
48
static const uint8_t rem6[52]={
49
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,
50
};
51

    
52
static const uint8_t div6[52]={
53
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,
54
};
55

    
56
static const enum PixelFormat hwaccel_pixfmt_list_h264_jpeg_420[] = {
57
    PIX_FMT_DXVA2_VLD,
58
    PIX_FMT_VAAPI_VLD,
59
    PIX_FMT_YUVJ420P,
60
    PIX_FMT_NONE
61
};
62

    
63
void ff_h264_write_back_intra_pred_mode(H264Context *h){
64
    int8_t *mode= h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
65

    
66
    AV_COPY32(mode, h->intra4x4_pred_mode_cache + 4 + 8*4);
67
    mode[4]= h->intra4x4_pred_mode_cache[7+8*3];
68
    mode[5]= h->intra4x4_pred_mode_cache[7+8*2];
69
    mode[6]= h->intra4x4_pred_mode_cache[7+8*1];
70
}
71

    
72
/**
73
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
74
 */
75
int ff_h264_check_intra4x4_pred_mode(H264Context *h){
76
    MpegEncContext * const s = &h->s;
77
    static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
78
    static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
79
    int i;
80

    
81
    if(!(h->top_samples_available&0x8000)){
82
        for(i=0; i<4; i++){
83
            int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
84
            if(status<0){
85
                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);
86
                return -1;
87
            } else if(status){
88
                h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
89
            }
90
        }
91
    }
92

    
93
    if((h->left_samples_available&0x8888)!=0x8888){
94
        static const int mask[4]={0x8000,0x2000,0x80,0x20};
95
        for(i=0; i<4; i++){
96
            if(!(h->left_samples_available&mask[i])){
97
                int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
98
                if(status<0){
99
                    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);
100
                    return -1;
101
                } else if(status){
102
                    h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
103
                }
104
            }
105
        }
106
    }
107

    
108
    return 0;
109
} //FIXME cleanup like ff_h264_check_intra_pred_mode
110

    
111
/**
112
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
113
 */
114
int ff_h264_check_intra_pred_mode(H264Context *h, int mode){
115
    MpegEncContext * const s = &h->s;
116
    static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
117
    static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
118

    
119
    if(mode > 6U) {
120
        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);
121
        return -1;
122
    }
123

    
124
    if(!(h->top_samples_available&0x8000)){
125
        mode= top[ mode ];
126
        if(mode<0){
127
            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);
128
            return -1;
129
        }
130
    }
131

    
132
    if((h->left_samples_available&0x8080) != 0x8080){
133
        mode= left[ mode ];
134
        if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
135
            mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
136
        }
137
        if(mode<0){
138
            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);
139
            return -1;
140
        }
141
    }
142

    
143
    return mode;
144
}
145

    
146
const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
147
    int i, si, di;
148
    uint8_t *dst;
149
    int bufidx;
150

    
151
//    src[0]&0x80;                //forbidden bit
152
    h->nal_ref_idc= src[0]>>5;
153
    h->nal_unit_type= src[0]&0x1F;
154

    
155
    src++; length--;
156
#if 0
157
    for(i=0; i<length; i++)
158
        printf("%2X ", src[i]);
159
#endif
160

    
161
#if HAVE_FAST_UNALIGNED
162
# if HAVE_FAST_64BIT
163
#   define RS 7
164
    for(i=0; i+1<length; i+=9){
165
        if(!((~AV_RN64A(src+i) & (AV_RN64A(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
166
# else
167
#   define RS 3
168
    for(i=0; i+1<length; i+=5){
169
        if(!((~AV_RN32A(src+i) & (AV_RN32A(src+i) - 0x01000101U)) & 0x80008080U))
170
# endif
171
            continue;
172
        if(i>0 && !src[i]) i--;
173
        while(src[i]) i++;
174
#else
175
#   define RS 0
176
    for(i=0; i+1<length; i+=2){
177
        if(src[i]) continue;
178
        if(i>0 && src[i-1]==0) i--;
179
#endif
180
        if(i+2<length && src[i+1]==0 && src[i+2]<=3){
181
            if(src[i+2]!=3){
182
                /* startcode, so we must be past the end */
183
                length=i;
184
            }
185
            break;
186
        }
187
        i-= RS;
188
    }
189

    
190
    if(i>=length-1){ //no escaped 0
191
        *dst_length= length;
192
        *consumed= length+1; //+1 for the header
193
        return src;
194
    }
195

    
196
    bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
197
    av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
198
    dst= h->rbsp_buffer[bufidx];
199

    
200
    if (dst == NULL){
201
        return NULL;
202
    }
203

    
204
//printf("decoding esc\n");
205
    memcpy(dst, src, i);
206
    si=di=i;
207
    while(si+2<length){
208
        //remove escapes (very rare 1:2^22)
209
        if(src[si+2]>3){
210
            dst[di++]= src[si++];
211
            dst[di++]= src[si++];
212
        }else if(src[si]==0 && src[si+1]==0){
213
            if(src[si+2]==3){ //escape
214
                dst[di++]= 0;
215
                dst[di++]= 0;
216
                si+=3;
217
                continue;
218
            }else //next start code
219
                goto nsc;
220
        }
221

    
222
        dst[di++]= src[si++];
223
    }
224
    while(si<length)
225
        dst[di++]= src[si++];
226
nsc:
227

    
228
    memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
229

    
230
    *dst_length= di;
231
    *consumed= si + 1;//+1 for the header
232
//FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
233
    return dst;
234
}
235

    
236
/**
237
 * Identify the exact end of the bitstream
238
 * @return the length of the trailing, or 0 if damaged
239
 */
240
static int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
241
    int v= *src;
242
    int r;
243

    
244
    tprintf(h->s.avctx, "rbsp trailing %X\n", v);
245

    
246
    for(r=1; r<9; r++){
247
        if(v&1) return r;
248
        v>>=1;
249
    }
250
    return 0;
251
}
252

    
253
static inline int get_lowest_part_list_y(H264Context *h, Picture *pic, int n, int height,
254
                                 int y_offset, int list){
255
    int raw_my= h->mv_cache[list][ scan8[n] ][1];
256
    int filter_height= (raw_my&3) ? 2 : 0;
257
    int full_my= (raw_my>>2) + y_offset;
258
    int top = full_my - filter_height, bottom = full_my + height + filter_height;
259

    
260
    return FFMAX(abs(top), bottom);
261
}
262

    
263
static inline void get_lowest_part_y(H264Context *h, int refs[2][48], int n, int height,
264
                               int y_offset, int list0, int list1, int *nrefs){
265
    MpegEncContext * const s = &h->s;
266
    int my;
267

    
268
    y_offset += 16*(s->mb_y >> MB_FIELD);
269

    
270
    if(list0){
271
        int ref_n = h->ref_cache[0][ scan8[n] ];
272
        Picture *ref= &h->ref_list[0][ref_n];
273

    
274
        // Error resilience puts the current picture in the ref list.
275
        // Don't try to wait on these as it will cause a deadlock.
276
        // Fields can wait on each other, though.
277
        if(ref->thread_opaque != s->current_picture.thread_opaque ||
278
           (ref->reference&3) != s->picture_structure) {
279
            my = get_lowest_part_list_y(h, ref, n, height, y_offset, 0);
280
            if (refs[0][ref_n] < 0) nrefs[0] += 1;
281
            refs[0][ref_n] = FFMAX(refs[0][ref_n], my);
282
        }
283
    }
284

    
285
    if(list1){
286
        int ref_n = h->ref_cache[1][ scan8[n] ];
287
        Picture *ref= &h->ref_list[1][ref_n];
288

    
289
        if(ref->thread_opaque != s->current_picture.thread_opaque ||
290
           (ref->reference&3) != s->picture_structure) {
291
            my = get_lowest_part_list_y(h, ref, n, height, y_offset, 1);
292
            if (refs[1][ref_n] < 0) nrefs[1] += 1;
293
            refs[1][ref_n] = FFMAX(refs[1][ref_n], my);
294
        }
295
    }
296
}
297

    
298
/**
299
 * Wait until all reference frames are available for MC operations.
300
 *
301
 * @param h the H264 context
302
 */
303
static void await_references(H264Context *h){
304
    MpegEncContext * const s = &h->s;
305
    const int mb_xy= h->mb_xy;
306
    const int mb_type= s->current_picture.mb_type[mb_xy];
307
    int refs[2][48];
308
    int nrefs[2] = {0};
309
    int ref, list;
310

    
311
    memset(refs, -1, sizeof(refs));
312

    
313
    if(IS_16X16(mb_type)){
314
        get_lowest_part_y(h, refs, 0, 16, 0,
315
                  IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
316
    }else if(IS_16X8(mb_type)){
317
        get_lowest_part_y(h, refs, 0, 8, 0,
318
                  IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
319
        get_lowest_part_y(h, refs, 8, 8, 8,
320
                  IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
321
    }else if(IS_8X16(mb_type)){
322
        get_lowest_part_y(h, refs, 0, 16, 0,
323
                  IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
324
        get_lowest_part_y(h, refs, 4, 16, 0,
325
                  IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
326
    }else{
327
        int i;
328

    
329
        assert(IS_8X8(mb_type));
330

    
331
        for(i=0; i<4; i++){
332
            const int sub_mb_type= h->sub_mb_type[i];
333
            const int n= 4*i;
334
            int y_offset= (i&2)<<2;
335

    
336
            if(IS_SUB_8X8(sub_mb_type)){
337
                get_lowest_part_y(h, refs, n  , 8, y_offset,
338
                          IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
339
            }else if(IS_SUB_8X4(sub_mb_type)){
340
                get_lowest_part_y(h, refs, n  , 4, y_offset,
341
                          IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
342
                get_lowest_part_y(h, refs, n+2, 4, y_offset+4,
343
                          IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
344
            }else if(IS_SUB_4X8(sub_mb_type)){
345
                get_lowest_part_y(h, refs, n  , 8, y_offset,
346
                          IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
347
                get_lowest_part_y(h, refs, n+1, 8, y_offset,
348
                          IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
349
            }else{
350
                int j;
351
                assert(IS_SUB_4X4(sub_mb_type));
352
                for(j=0; j<4; j++){
353
                    int sub_y_offset= y_offset + 2*(j&2);
354
                    get_lowest_part_y(h, refs, n+j, 4, sub_y_offset,
355
                              IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
356
                }
357
            }
358
        }
359
    }
360

    
361
    for(list=h->list_count-1; list>=0; list--){
362
        for(ref=0; ref<48 && nrefs[list]; ref++){
363
            int row = refs[list][ref];
364
            if(row >= 0){
365
                Picture *ref_pic = &h->ref_list[list][ref];
366
                int ref_field = ref_pic->reference - 1;
367
                int ref_field_picture = ref_pic->field_picture;
368
                int pic_height = 16*s->mb_height >> ref_field_picture;
369

    
370
                row <<= MB_MBAFF;
371
                nrefs[list]--;
372

    
373
                if(!FIELD_PICTURE && ref_field_picture){ // frame referencing two fields
374
                    ff_thread_await_progress((AVFrame*)ref_pic, FFMIN((row >> 1) - !(row&1), pic_height-1), 1);
375
                    ff_thread_await_progress((AVFrame*)ref_pic, FFMIN((row >> 1)           , pic_height-1), 0);
376
                }else if(FIELD_PICTURE && !ref_field_picture){ // field referencing one field of a frame
377
                    ff_thread_await_progress((AVFrame*)ref_pic, FFMIN(row*2 + ref_field    , pic_height-1), 0);
378
                }else if(FIELD_PICTURE){
379
                    ff_thread_await_progress((AVFrame*)ref_pic, FFMIN(row, pic_height-1), ref_field);
380
                }else{
381
                    ff_thread_await_progress((AVFrame*)ref_pic, FFMIN(row, pic_height-1), 0);
382
                }
383
            }
384
        }
385
    }
386
}
387

    
388
#if 0
389
/**
390
 * DCT transforms the 16 dc values.
391
 * @param qp quantization parameter ??? FIXME
392
 */
393
static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
394
//    const int qmul= dequant_coeff[qp][0];
395
    int i;
396
    int temp[16]; //FIXME check if this is a good idea
397
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
398
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
399

400
    for(i=0; i<4; i++){
401
        const int offset= y_offset[i];
402
        const int z0= block[offset+stride*0] + block[offset+stride*4];
403
        const int z1= block[offset+stride*0] - block[offset+stride*4];
404
        const int z2= block[offset+stride*1] - block[offset+stride*5];
405
        const int z3= block[offset+stride*1] + block[offset+stride*5];
406

407
        temp[4*i+0]= z0+z3;
408
        temp[4*i+1]= z1+z2;
409
        temp[4*i+2]= z1-z2;
410
        temp[4*i+3]= z0-z3;
411
    }
412

413
    for(i=0; i<4; i++){
414
        const int offset= x_offset[i];
415
        const int z0= temp[4*0+i] + temp[4*2+i];
416
        const int z1= temp[4*0+i] - temp[4*2+i];
417
        const int z2= temp[4*1+i] - temp[4*3+i];
418
        const int z3= temp[4*1+i] + temp[4*3+i];
419

420
        block[stride*0 +offset]= (z0 + z3)>>1;
421
        block[stride*2 +offset]= (z1 + z2)>>1;
422
        block[stride*8 +offset]= (z1 - z2)>>1;
423
        block[stride*10+offset]= (z0 - z3)>>1;
424
    }
425
}
426
#endif
427

    
428
#undef xStride
429
#undef stride
430

    
431
static void chroma_dc_dequant_idct_c(DCTELEM *block, int qmul){
432
    const int stride= 16*2;
433
    const int xStride= 16;
434
    int a,b,c,d,e;
435

    
436
    a= block[stride*0 + xStride*0];
437
    b= block[stride*0 + xStride*1];
438
    c= block[stride*1 + xStride*0];
439
    d= block[stride*1 + xStride*1];
440

    
441
    e= a-b;
442
    a= a+b;
443
    b= c-d;
444
    c= c+d;
445

    
446
    block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
447
    block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
448
    block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
449
    block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
450
}
451

    
452
#if 0
453
static void chroma_dc_dct_c(DCTELEM *block){
454
    const int stride= 16*2;
455
    const int xStride= 16;
456
    int a,b,c,d,e;
457

458
    a= block[stride*0 + xStride*0];
459
    b= block[stride*0 + xStride*1];
460
    c= block[stride*1 + xStride*0];
461
    d= block[stride*1 + xStride*1];
462

463
    e= a-b;
464
    a= a+b;
465
    b= c-d;
466
    c= c+d;
467

468
    block[stride*0 + xStride*0]= (a+c);
469
    block[stride*0 + xStride*1]= (e+b);
470
    block[stride*1 + xStride*0]= (a-c);
471
    block[stride*1 + xStride*1]= (e-b);
472
}
473
#endif
474

    
475
static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
476
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
477
                           int src_x_offset, int src_y_offset,
478
                           qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
479
    MpegEncContext * const s = &h->s;
480
    const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
481
    int my=       h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
482
    const int luma_xy= (mx&3) + ((my&3)<<2);
483
    uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
484
    uint8_t * src_cb, * src_cr;
485
    int extra_width= h->emu_edge_width;
486
    int extra_height= h->emu_edge_height;
487
    int emu=0;
488
    const int full_mx= mx>>2;
489
    const int full_my= my>>2;
490
    const int pic_width  = 16*s->mb_width;
491
    const int pic_height = 16*s->mb_height >> MB_FIELD;
492

    
493
    if(mx&7) extra_width -= 3;
494
    if(my&7) extra_height -= 3;
495

    
496
    if(   full_mx < 0-extra_width
497
       || full_my < 0-extra_height
498
       || full_mx + 16/*FIXME*/ > pic_width + extra_width
499
       || full_my + 16/*FIXME*/ > pic_height + extra_height){
500
        s->dsp.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);
501
            src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
502
        emu=1;
503
    }
504

    
505
    qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
506
    if(!square){
507
        qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
508
    }
509

    
510
    if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
511

    
512
    if(MB_FIELD){
513
        // chroma offset when predicting from a field of opposite parity
514
        my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
515
        emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
516
    }
517
    src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
518
    src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
519

    
520
    if(emu){
521
        s->dsp.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);
522
            src_cb= s->edge_emu_buffer;
523
    }
524
    chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
525

    
526
    if(emu){
527
        s->dsp.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);
528
            src_cr= s->edge_emu_buffer;
529
    }
530
    chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
531
}
532

    
533
static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
534
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
535
                           int x_offset, int y_offset,
536
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
537
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
538
                           int list0, int list1){
539
    MpegEncContext * const s = &h->s;
540
    qpel_mc_func *qpix_op=  qpix_put;
541
    h264_chroma_mc_func chroma_op= chroma_put;
542

    
543
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
544
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
545
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
546
    x_offset += 8*s->mb_x;
547
    y_offset += 8*(s->mb_y >> MB_FIELD);
548

    
549
    if(list0){
550
        Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
551
        mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
552
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
553
                           qpix_op, chroma_op);
554

    
555
        qpix_op=  qpix_avg;
556
        chroma_op= chroma_avg;
557
    }
558

    
559
    if(list1){
560
        Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
561
        mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
562
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
563
                           qpix_op, chroma_op);
564
    }
565
}
566

    
567
static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
568
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
569
                           int x_offset, int y_offset,
570
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
571
                           h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
572
                           h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
573
                           int list0, int list1){
574
    MpegEncContext * const s = &h->s;
575

    
576
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
577
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
578
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
579
    x_offset += 8*s->mb_x;
580
    y_offset += 8*(s->mb_y >> MB_FIELD);
581

    
582
    if(list0 && list1){
583
        /* don't optimize for luma-only case, since B-frames usually
584
         * use implicit weights => chroma too. */
585
        uint8_t *tmp_cb = s->obmc_scratchpad;
586
        uint8_t *tmp_cr = s->obmc_scratchpad + 8;
587
        uint8_t *tmp_y  = s->obmc_scratchpad + 8*h->mb_uvlinesize;
588
        int refn0 = h->ref_cache[0][ scan8[n] ];
589
        int refn1 = h->ref_cache[1][ scan8[n] ];
590

    
591
        mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
592
                    dest_y, dest_cb, dest_cr,
593
                    x_offset, y_offset, qpix_put, chroma_put);
594
        mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
595
                    tmp_y, tmp_cb, tmp_cr,
596
                    x_offset, y_offset, qpix_put, chroma_put);
597

    
598
        if(h->use_weight == 2){
599
            int weight0 = h->implicit_weight[refn0][refn1][s->mb_y&1];
600
            int weight1 = 64 - weight0;
601
            luma_weight_avg(  dest_y,  tmp_y,  h->  mb_linesize, 5, weight0, weight1, 0);
602
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
603
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
604
        }else{
605
            luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
606
                            h->luma_weight[refn0][0][0] , h->luma_weight[refn1][1][0],
607
                            h->luma_weight[refn0][0][1] + h->luma_weight[refn1][1][1]);
608
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
609
                            h->chroma_weight[refn0][0][0][0] , h->chroma_weight[refn1][1][0][0],
610
                            h->chroma_weight[refn0][0][0][1] + h->chroma_weight[refn1][1][0][1]);
611
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
612
                            h->chroma_weight[refn0][0][1][0] , h->chroma_weight[refn1][1][1][0],
613
                            h->chroma_weight[refn0][0][1][1] + h->chroma_weight[refn1][1][1][1]);
614
        }
615
    }else{
616
        int list = list1 ? 1 : 0;
617
        int refn = h->ref_cache[list][ scan8[n] ];
618
        Picture *ref= &h->ref_list[list][refn];
619
        mc_dir_part(h, ref, n, square, chroma_height, delta, list,
620
                    dest_y, dest_cb, dest_cr, x_offset, y_offset,
621
                    qpix_put, chroma_put);
622

    
623
        luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
624
                       h->luma_weight[refn][list][0], h->luma_weight[refn][list][1]);
625
        if(h->use_weight_chroma){
626
            chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
627
                             h->chroma_weight[refn][list][0][0], h->chroma_weight[refn][list][0][1]);
628
            chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
629
                             h->chroma_weight[refn][list][1][0], h->chroma_weight[refn][list][1][1]);
630
        }
631
    }
632
}
633

    
634
static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
635
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
636
                           int x_offset, int y_offset,
637
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
638
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
639
                           h264_weight_func *weight_op, h264_biweight_func *weight_avg,
640
                           int list0, int list1){
641
    if((h->use_weight==2 && list0 && list1
642
        && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ][h->s.mb_y&1] != 32))
643
       || h->use_weight==1)
644
        mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
645
                         x_offset, y_offset, qpix_put, chroma_put,
646
                         weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
647
    else
648
        mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
649
                    x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
650
}
651

    
652
static inline void prefetch_motion(H264Context *h, int list){
653
    /* fetch pixels for estimated mv 4 macroblocks ahead
654
     * optimized for 64byte cache lines */
655
    MpegEncContext * const s = &h->s;
656
    const int refn = h->ref_cache[list][scan8[0]];
657
    if(refn >= 0){
658
        const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
659
        const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
660
        uint8_t **src= h->ref_list[list][refn].data;
661
        int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
662
        s->dsp.prefetch(src[0]+off, s->linesize, 4);
663
        off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
664
        s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
665
    }
666
}
667

    
668
static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
669
                      qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
670
                      qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
671
                      h264_weight_func *weight_op, h264_biweight_func *weight_avg){
672
    MpegEncContext * const s = &h->s;
673
    const int mb_xy= h->mb_xy;
674
    const int mb_type= s->current_picture.mb_type[mb_xy];
675

    
676
    assert(IS_INTER(mb_type));
677

    
678
    if(HAVE_PTHREADS && s->avctx->active_thread_type&FF_THREAD_FRAME)
679
        await_references(h);
680
    prefetch_motion(h, 0);
681

    
682
    if(IS_16X16(mb_type)){
683
        mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
684
                qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
685
                weight_op, weight_avg,
686
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
687
    }else if(IS_16X8(mb_type)){
688
        mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
689
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
690
                &weight_op[1], &weight_avg[1],
691
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
692
        mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
693
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
694
                &weight_op[1], &weight_avg[1],
695
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
696
    }else if(IS_8X16(mb_type)){
697
        mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
698
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
699
                &weight_op[2], &weight_avg[2],
700
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
701
        mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
702
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
703
                &weight_op[2], &weight_avg[2],
704
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
705
    }else{
706
        int i;
707

    
708
        assert(IS_8X8(mb_type));
709

    
710
        for(i=0; i<4; i++){
711
            const int sub_mb_type= h->sub_mb_type[i];
712
            const int n= 4*i;
713
            int x_offset= (i&1)<<2;
714
            int y_offset= (i&2)<<1;
715

    
716
            if(IS_SUB_8X8(sub_mb_type)){
717
                mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
718
                    qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
719
                    &weight_op[3], &weight_avg[3],
720
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
721
            }else if(IS_SUB_8X4(sub_mb_type)){
722
                mc_part(h, n  , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
723
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
724
                    &weight_op[4], &weight_avg[4],
725
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
726
                mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
727
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
728
                    &weight_op[4], &weight_avg[4],
729
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
730
            }else if(IS_SUB_4X8(sub_mb_type)){
731
                mc_part(h, n  , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
732
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
733
                    &weight_op[5], &weight_avg[5],
734
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
735
                mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
736
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
737
                    &weight_op[5], &weight_avg[5],
738
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
739
            }else{
740
                int j;
741
                assert(IS_SUB_4X4(sub_mb_type));
742
                for(j=0; j<4; j++){
743
                    int sub_x_offset= x_offset + 2*(j&1);
744
                    int sub_y_offset= y_offset +   (j&2);
745
                    mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
746
                        qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
747
                        &weight_op[6], &weight_avg[6],
748
                        IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
749
                }
750
            }
751
        }
752
    }
753

    
754
    prefetch_motion(h, 1);
755
}
756

    
757

    
758
static void free_tables(H264Context *h, int free_rbsp){
759
    int i;
760
    H264Context *hx;
761
    av_freep(&h->intra4x4_pred_mode);
762
    av_freep(&h->chroma_pred_mode_table);
763
    av_freep(&h->cbp_table);
764
    av_freep(&h->mvd_table[0]);
765
    av_freep(&h->mvd_table[1]);
766
    av_freep(&h->direct_table);
767
    av_freep(&h->non_zero_count);
768
    av_freep(&h->slice_table_base);
769
    h->slice_table= NULL;
770
    av_freep(&h->list_counts);
771

    
772
    av_freep(&h->mb2b_xy);
773
    av_freep(&h->mb2br_xy);
774

    
775
    for(i = 0; i < MAX_THREADS; i++) {
776
        hx = h->thread_context[i];
777
        if(!hx) continue;
778
        av_freep(&hx->top_borders[1]);
779
        av_freep(&hx->top_borders[0]);
780
        av_freep(&hx->s.obmc_scratchpad);
781
        if (free_rbsp){
782
            av_freep(&hx->rbsp_buffer[1]);
783
            av_freep(&hx->rbsp_buffer[0]);
784
            hx->rbsp_buffer_size[0] = 0;
785
            hx->rbsp_buffer_size[1] = 0;
786
        }
787
        if (i) av_freep(&h->thread_context[i]);
788
    }
789
}
790

    
791
static void init_dequant8_coeff_table(H264Context *h){
792
    int i,q,x;
793
    h->dequant8_coeff[0] = h->dequant8_buffer[0];
794
    h->dequant8_coeff[1] = h->dequant8_buffer[1];
795

    
796
    for(i=0; i<2; i++ ){
797
        if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
798
            h->dequant8_coeff[1] = h->dequant8_buffer[0];
799
            break;
800
        }
801

    
802
        for(q=0; q<52; q++){
803
            int shift = div6[q];
804
            int idx = rem6[q];
805
            for(x=0; x<64; x++)
806
                h->dequant8_coeff[i][q][(x>>3)|((x&7)<<3)] =
807
                    ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
808
                    h->pps.scaling_matrix8[i][x]) << shift;
809
        }
810
    }
811
}
812

    
813
static void init_dequant4_coeff_table(H264Context *h){
814
    int i,j,q,x;
815
    for(i=0; i<6; i++ ){
816
        h->dequant4_coeff[i] = h->dequant4_buffer[i];
817
        for(j=0; j<i; j++){
818
            if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
819
                h->dequant4_coeff[i] = h->dequant4_buffer[j];
820
                break;
821
            }
822
        }
823
        if(j<i)
824
            continue;
825

    
826
        for(q=0; q<52; q++){
827
            int shift = div6[q] + 2;
828
            int idx = rem6[q];
829
            for(x=0; x<16; x++)
830
                h->dequant4_coeff[i][q][(x>>2)|((x<<2)&0xF)] =
831
                    ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
832
                    h->pps.scaling_matrix4[i][x]) << shift;
833
        }
834
    }
835
}
836

    
837
static void init_dequant_tables(H264Context *h){
838
    int i,x;
839
    init_dequant4_coeff_table(h);
840
    if(h->pps.transform_8x8_mode)
841
        init_dequant8_coeff_table(h);
842
    if(h->sps.transform_bypass){
843
        for(i=0; i<6; i++)
844
            for(x=0; x<16; x++)
845
                h->dequant4_coeff[i][0][x] = 1<<6;
846
        if(h->pps.transform_8x8_mode)
847
            for(i=0; i<2; i++)
848
                for(x=0; x<64; x++)
849
                    h->dequant8_coeff[i][0][x] = 1<<6;
850
    }
851
}
852

    
853

    
854
int ff_h264_alloc_tables(H264Context *h){
855
    MpegEncContext * const s = &h->s;
856
    const int big_mb_num= s->mb_stride * (s->mb_height+1);
857
    const int row_mb_num= 2*s->mb_stride*s->avctx->thread_count;
858
    int x,y;
859

    
860
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, row_mb_num * 8  * sizeof(uint8_t), fail)
861

    
862
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count    , big_mb_num * 32 * sizeof(uint8_t), fail)
863
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base  , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base), fail)
864
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table, big_mb_num * sizeof(uint16_t), fail)
865

    
866
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t), fail)
867
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0], 16*row_mb_num * sizeof(uint8_t), fail);
868
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 16*row_mb_num * sizeof(uint8_t), fail);
869
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 4*big_mb_num * sizeof(uint8_t) , fail);
870
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->list_counts, big_mb_num * sizeof(uint8_t), fail)
871

    
872
    memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride)  * sizeof(*h->slice_table_base));
873
    h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
874

    
875
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy  , big_mb_num * sizeof(uint32_t), fail);
876
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2br_xy , big_mb_num * sizeof(uint32_t), fail);
877
    for(y=0; y<s->mb_height; y++){
878
        for(x=0; x<s->mb_width; x++){
879
            const int mb_xy= x + y*s->mb_stride;
880
            const int b_xy = 4*x + 4*y*h->b_stride;
881

    
882
            h->mb2b_xy [mb_xy]= b_xy;
883
            h->mb2br_xy[mb_xy]= 8*(FMO ? mb_xy : (mb_xy % (2*s->mb_stride)));
884
        }
885
    }
886

    
887
    s->obmc_scratchpad = NULL;
888

    
889
    if(!h->dequant4_coeff[0])
890
        init_dequant_tables(h);
891

    
892
    return 0;
893
fail:
894
    free_tables(h, 1);
895
    return -1;
896
}
897

    
898
/**
899
 * Mimic alloc_tables(), but for every context thread.
900
 */
901
static void clone_tables(H264Context *dst, H264Context *src, int i){
902
    MpegEncContext * const s = &src->s;
903
    dst->intra4x4_pred_mode       = src->intra4x4_pred_mode + i*8*2*s->mb_stride;
904
    dst->non_zero_count           = src->non_zero_count;
905
    dst->slice_table              = src->slice_table;
906
    dst->cbp_table                = src->cbp_table;
907
    dst->mb2b_xy                  = src->mb2b_xy;
908
    dst->mb2br_xy                 = src->mb2br_xy;
909
    dst->chroma_pred_mode_table   = src->chroma_pred_mode_table;
910
    dst->mvd_table[0]             = src->mvd_table[0] + i*8*2*s->mb_stride;
911
    dst->mvd_table[1]             = src->mvd_table[1] + i*8*2*s->mb_stride;
912
    dst->direct_table             = src->direct_table;
913
    dst->list_counts              = src->list_counts;
914

    
915
    dst->s.obmc_scratchpad = NULL;
916
    ff_h264_pred_init(&dst->hpc, src->s.codec_id);
917
}
918

    
919
/**
920
 * Init context
921
 * Allocate buffers which are not shared amongst multiple threads.
922
 */
923
static int context_init(H264Context *h){
924
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
925
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
926

    
927
    h->ref_cache[0][scan8[5 ]+1] = h->ref_cache[0][scan8[7 ]+1] = h->ref_cache[0][scan8[13]+1] =
928
    h->ref_cache[1][scan8[5 ]+1] = h->ref_cache[1][scan8[7 ]+1] = h->ref_cache[1][scan8[13]+1] = PART_NOT_AVAILABLE;
929

    
930
    return 0;
931
fail:
932
    return -1; // free_tables will clean up for us
933
}
934

    
935
static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size);
936

    
937
static av_cold void common_init(H264Context *h){
938
    MpegEncContext * const s = &h->s;
939

    
940
    s->width = s->avctx->width;
941
    s->height = s->avctx->height;
942
    s->codec_id= s->avctx->codec->id;
943

    
944
    ff_h264dsp_init(&h->h264dsp);
945
    ff_h264_pred_init(&h->hpc, s->codec_id);
946

    
947
    h->dequant_coeff_pps= -1;
948
    s->unrestricted_mv=1;
949
    s->decode=1; //FIXME
950

    
951
    dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early
952

    
953
    memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
954
    memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
955
}
956

    
957
int ff_h264_decode_extradata(H264Context *h)
958
{
959
    AVCodecContext *avctx = h->s.avctx;
960

    
961
    if(*(char *)avctx->extradata == 1){
962
        int i, cnt, nalsize;
963
        unsigned char *p = avctx->extradata;
964

    
965
        h->is_avc = 1;
966

    
967
        if(avctx->extradata_size < 7) {
968
            av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
969
            return -1;
970
        }
971
        /* sps and pps in the avcC always have length coded with 2 bytes,
972
           so put a fake nal_length_size = 2 while parsing them */
973
        h->nal_length_size = 2;
974
        // Decode sps from avcC
975
        cnt = *(p+5) & 0x1f; // Number of sps
976
        p += 6;
977
        for (i = 0; i < cnt; i++) {
978
            nalsize = AV_RB16(p) + 2;
979
            if(decode_nal_units(h, p, nalsize) < 0) {
980
                av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
981
                return -1;
982
            }
983
            p += nalsize;
984
        }
985
        // Decode pps from avcC
986
        cnt = *(p++); // Number of pps
987
        for (i = 0; i < cnt; i++) {
988
            nalsize = AV_RB16(p) + 2;
989
            if(decode_nal_units(h, p, nalsize)  != nalsize) {
990
                av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
991
                return -1;
992
            }
993
            p += nalsize;
994
        }
995
        // Now store right nal length size, that will be use to parse all other nals
996
        h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
997
    } else {
998
        h->is_avc = 0;
999
        if(decode_nal_units(h, avctx->extradata, avctx->extradata_size) < 0)
1000
            return -1;
1001
    }
1002
    return 0;
1003
}
1004

    
1005
av_cold int ff_h264_decode_init(AVCodecContext *avctx){
1006
    H264Context *h= avctx->priv_data;
1007
    MpegEncContext * const s = &h->s;
1008

    
1009
    MPV_decode_defaults(s);
1010

    
1011
    s->avctx = avctx;
1012
    common_init(h);
1013

    
1014
    s->out_format = FMT_H264;
1015
    s->workaround_bugs= avctx->workaround_bugs;
1016

    
1017
    // set defaults
1018
//    s->decode_mb= ff_h263_decode_mb;
1019
    s->quarter_sample = 1;
1020
    if(!avctx->has_b_frames)
1021
    s->low_delay= 1;
1022

    
1023
    avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
1024

    
1025
    ff_h264_decode_init_vlc();
1026

    
1027
    h->thread_context[0] = h;
1028
    h->outputed_poc = h->next_outputed_poc = INT_MIN;
1029
    h->prev_poc_msb= 1<<16;
1030
    h->x264_build = -1;
1031
    ff_h264_reset_sei(h);
1032
    if(avctx->codec_id == CODEC_ID_H264){
1033
        if(avctx->ticks_per_frame == 1){
1034
            s->avctx->time_base.den *=2;
1035
        }
1036
        avctx->ticks_per_frame = 2;
1037
    }
1038

    
1039
    if(avctx->extradata_size > 0 && avctx->extradata &&
1040
        ff_h264_decode_extradata(h))
1041
        return -1;
1042

    
1043
    if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames < h->sps.num_reorder_frames){
1044
        s->avctx->has_b_frames = h->sps.num_reorder_frames;
1045
        s->low_delay = 0;
1046
    }
1047

    
1048
    return 0;
1049
}
1050

    
1051
static void copy_picture_range(Picture **to, Picture **from, int count, MpegEncContext *new_base, MpegEncContext *old_base)
1052
{
1053
    int i;
1054

    
1055
    for (i=0; i<count; i++){
1056
        to[i] = REBASE_PICTURE(from[i], new_base, old_base);
1057
    }
1058
}
1059

    
1060
static void copy_parameter_set(void **to, void **from, int count, int size)
1061
{
1062
    int i;
1063

    
1064
    for (i=0; i<count; i++){
1065
        if (to[i] && !from[i]) av_freep(&to[i]);
1066
        else if (from[i] && !to[i]) to[i] = av_malloc(size);
1067

    
1068
        if (from[i]) memcpy(to[i], from[i], size);
1069
    }
1070
}
1071

    
1072
static int decode_init_thread_copy(AVCodecContext *avctx){
1073
    H264Context *h= avctx->priv_data;
1074

    
1075
    if (!avctx->is_copy) return 0;
1076
    memset(h->sps_buffers, 0, sizeof(h->sps_buffers));
1077
    memset(h->pps_buffers, 0, sizeof(h->pps_buffers));
1078

    
1079
    return 0;
1080
}
1081

    
1082
#define copy_fields(to, from, start_field, end_field) memcpy(&to->start_field, &from->start_field, (char*)&to->end_field - (char*)&to->start_field)
1083
static int decode_update_thread_context(AVCodecContext *dst, const AVCodecContext *src){
1084
    H264Context *h= dst->priv_data, *h1= src->priv_data;
1085
    MpegEncContext * const s = &h->s, * const s1 = &h1->s;
1086
    int inited = s->context_initialized, err;
1087
    int i;
1088

    
1089
    if(dst == src || !s1->context_initialized) return 0;
1090

    
1091
    err = ff_mpeg_update_thread_context(dst, src);
1092
    if(err) return err;
1093

    
1094
    //FIXME handle width/height changing
1095
    if(!inited){
1096
        for(i = 0; i < MAX_SPS_COUNT; i++)
1097
            av_freep(h->sps_buffers + i);
1098

    
1099
        for(i = 0; i < MAX_PPS_COUNT; i++)
1100
            av_freep(h->pps_buffers + i);
1101

    
1102
        memcpy(&h->s + 1, &h1->s + 1, sizeof(H264Context) - sizeof(MpegEncContext)); //copy all fields after MpegEnc
1103
        memset(h->sps_buffers, 0, sizeof(h->sps_buffers));
1104
        memset(h->pps_buffers, 0, sizeof(h->pps_buffers));
1105
        ff_h264_alloc_tables(h);
1106
        context_init(h);
1107

    
1108
        for(i=0; i<2; i++){
1109
            h->rbsp_buffer[i] = NULL;
1110
            h->rbsp_buffer_size[i] = 0;
1111
        }
1112

    
1113
        h->thread_context[0] = h;
1114

    
1115
        // frame_start may not be called for the next thread (if it's decoding a bottom field)
1116
        // so this has to be allocated here
1117
        h->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
1118

    
1119
        s->dsp.clear_blocks(h->mb);
1120
    }
1121

    
1122
    //extradata/NAL handling
1123
    h->is_avc          = h1->is_avc;
1124

    
1125
    //SPS/PPS
1126
    copy_parameter_set((void**)h->sps_buffers, (void**)h1->sps_buffers, MAX_SPS_COUNT, sizeof(SPS));
1127
    h->sps             = h1->sps;
1128
    copy_parameter_set((void**)h->pps_buffers, (void**)h1->pps_buffers, MAX_PPS_COUNT, sizeof(PPS));
1129
    h->pps             = h1->pps;
1130

    
1131
    //Dequantization matrices
1132
    //FIXME these are big - can they be only copied when PPS changes?
1133
    copy_fields(h, h1, dequant4_buffer, dequant4_coeff);
1134

    
1135
    for(i=0; i<6; i++)
1136
        h->dequant4_coeff[i] = h->dequant4_buffer[0] + (h1->dequant4_coeff[i] - h1->dequant4_buffer[0]);
1137

    
1138
    for(i=0; i<2; i++)
1139
        h->dequant8_coeff[i] = h->dequant8_buffer[0] + (h1->dequant8_coeff[i] - h1->dequant8_buffer[0]);
1140

    
1141
    h->dequant_coeff_pps = h1->dequant_coeff_pps;
1142

    
1143
    //POC timing
1144
    copy_fields(h, h1, poc_lsb, redundant_pic_count);
1145

    
1146
    //reference lists
1147
    copy_fields(h, h1, ref_count, intra_gb);
1148
    copy_fields(h, h1, short_ref, cabac_init_idc);
1149

    
1150
    copy_picture_range(h->short_ref,   h1->short_ref,   32, s, s1);
1151
    copy_picture_range(h->long_ref,    h1->long_ref,    32,  s, s1);
1152
    copy_picture_range(h->delayed_pic, h1->delayed_pic, MAX_DELAYED_PIC_COUNT+2, s, s1);
1153

    
1154
    h->last_slice_type = h1->last_slice_type;
1155

    
1156
    if(!s->current_picture_ptr) return 0;
1157

    
1158
    if(!s->dropable) {
1159
        ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1160
        h->prev_poc_msb     = h->poc_msb;
1161
        h->prev_poc_lsb     = h->poc_lsb;
1162
    }
1163
    h->prev_frame_num_offset= h->frame_num_offset;
1164
    h->prev_frame_num       = h->frame_num;
1165
    h->outputed_poc         = h->next_outputed_poc;
1166

    
1167
    return 0;
1168
}
1169

    
1170
int ff_h264_frame_start(H264Context *h){
1171
    MpegEncContext * const s = &h->s;
1172
    int i;
1173

    
1174
    if(MPV_frame_start(s, s->avctx) < 0)
1175
        return -1;
1176
    ff_er_frame_start(s);
1177
    /*
1178
     * MPV_frame_start uses pict_type to derive key_frame.
1179
     * This is incorrect for H.264; IDR markings must be used.
1180
     * Zero here; IDR markings per slice in frame or fields are ORed in later.
1181
     * See decode_nal_units().
1182
     */
1183
    s->current_picture_ptr->key_frame= 0;
1184
    s->current_picture_ptr->mmco_reset= 0;
1185

    
1186
    assert(s->linesize && s->uvlinesize);
1187

    
1188
    for(i=0; i<16; i++){
1189
        h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
1190
        h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
1191
    }
1192
    for(i=0; i<4; i++){
1193
        h->block_offset[16+i]=
1194
        h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
1195
        h->block_offset[24+16+i]=
1196
        h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
1197
    }
1198

    
1199
    /* can't be in alloc_tables because linesize isn't known there.
1200
     * FIXME: redo bipred weight to not require extra buffer? */
1201
    for(i = 0; i < s->avctx->thread_count; i++)
1202
        if(h->thread_context[i] && !h->thread_context[i]->s.obmc_scratchpad)
1203
            h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
1204

    
1205
    /* some macroblocks can be accessed before they're available in case of lost slices, mbaff or threading*/
1206
    memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
1207

    
1208
//    s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
1209

    
1210
    // We mark the current picture as non-reference after allocating it, so
1211
    // that if we break out due to an error it can be released automatically
1212
    // in the next MPV_frame_start().
1213
    // SVQ3 as well as most other codecs have only last/next/current and thus
1214
    // get released even with set reference, besides SVQ3 and others do not
1215
    // mark frames as reference later "naturally".
1216
    if(s->codec_id != CODEC_ID_SVQ3)
1217
        s->current_picture_ptr->reference= 0;
1218

    
1219
    s->current_picture_ptr->field_poc[0]=
1220
    s->current_picture_ptr->field_poc[1]= INT_MAX;
1221

    
1222
    h->next_output_pic = NULL;
1223

    
1224
    assert(s->current_picture_ptr->long_ref==0);
1225

    
1226
    return 0;
1227
}
1228

    
1229
/**
1230
  * Run setup operations that must be run after slice header decoding.
1231
  * This includes finding the next displayed frame.
1232
  *
1233
  * @param h h264 master context
1234
  */
1235
static void decode_postinit(H264Context *h){
1236
    MpegEncContext * const s = &h->s;
1237
    Picture *out = s->current_picture_ptr;
1238
    Picture *cur = s->current_picture_ptr;
1239
    int i, pics, out_of_order, out_idx;
1240

    
1241
    s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
1242
    s->current_picture_ptr->pict_type= s->pict_type;
1243

    
1244
    if (h->next_output_pic) return;
1245

    
1246
    if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) {
1247
        //FIXME this allows the next thread to start once we encounter the first field of a PAFF packet
1248
        //This works if the next packet contains the second field. It does not work if both fields are
1249
        //in the same packet.
1250
        //ff_thread_finish_setup(s->avctx);
1251
        return;
1252
    }
1253

    
1254
    cur->interlaced_frame = 0;
1255
    cur->repeat_pict = 0;
1256

    
1257
    /* Signal interlacing information externally. */
1258
    /* Prioritize picture timing SEI information over used decoding process if it exists. */
1259

    
1260
    if(h->sps.pic_struct_present_flag){
1261
        switch (h->sei_pic_struct)
1262
        {
1263
        case SEI_PIC_STRUCT_FRAME:
1264
            break;
1265
        case SEI_PIC_STRUCT_TOP_FIELD:
1266
        case SEI_PIC_STRUCT_BOTTOM_FIELD:
1267
            cur->interlaced_frame = 1;
1268
            break;
1269
        case SEI_PIC_STRUCT_TOP_BOTTOM:
1270
        case SEI_PIC_STRUCT_BOTTOM_TOP:
1271
            if (FIELD_OR_MBAFF_PICTURE)
1272
                cur->interlaced_frame = 1;
1273
            else
1274
                // try to flag soft telecine progressive
1275
                cur->interlaced_frame = h->prev_interlaced_frame;
1276
            break;
1277
        case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
1278
        case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
1279
            // Signal the possibility of telecined film externally (pic_struct 5,6)
1280
            // From these hints, let the applications decide if they apply deinterlacing.
1281
            cur->repeat_pict = 1;
1282
            break;
1283
        case SEI_PIC_STRUCT_FRAME_DOUBLING:
1284
            // Force progressive here, as doubling interlaced frame is a bad idea.
1285
            cur->repeat_pict = 2;
1286
            break;
1287
        case SEI_PIC_STRUCT_FRAME_TRIPLING:
1288
            cur->repeat_pict = 4;
1289
            break;
1290
        }
1291

    
1292
        if ((h->sei_ct_type & 3) && h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
1293
            cur->interlaced_frame = (h->sei_ct_type & (1<<1)) != 0;
1294
    }else{
1295
        /* Derive interlacing flag from used decoding process. */
1296
        cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE;
1297
    }
1298
    h->prev_interlaced_frame = cur->interlaced_frame;
1299

    
1300
    if (cur->field_poc[0] != cur->field_poc[1]){
1301
        /* Derive top_field_first from field pocs. */
1302
        cur->top_field_first = cur->field_poc[0] < cur->field_poc[1];
1303
    }else{
1304
        if(cur->interlaced_frame || h->sps.pic_struct_present_flag){
1305
            /* Use picture timing SEI information. Even if it is a information of a past frame, better than nothing. */
1306
            if(h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM
1307
              || h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
1308
                cur->top_field_first = 1;
1309
            else
1310
                cur->top_field_first = 0;
1311
        }else{
1312
            /* Most likely progressive */
1313
            cur->top_field_first = 0;
1314
        }
1315
    }
1316

    
1317
    //FIXME do something with unavailable reference frames
1318

    
1319
    /* Sort B-frames into display order */
1320

    
1321
    if(h->sps.bitstream_restriction_flag
1322
       && s->avctx->has_b_frames < h->sps.num_reorder_frames){
1323
        s->avctx->has_b_frames = h->sps.num_reorder_frames;
1324
        s->low_delay = 0;
1325
    }
1326

    
1327
    if(   s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT
1328
       && !h->sps.bitstream_restriction_flag){
1329
        s->avctx->has_b_frames= MAX_DELAYED_PIC_COUNT;
1330
        s->low_delay= 0;
1331
    }
1332

    
1333
    pics = 0;
1334
    while(h->delayed_pic[pics]) pics++;
1335

    
1336
    assert(pics <= MAX_DELAYED_PIC_COUNT);
1337

    
1338
    h->delayed_pic[pics++] = cur;
1339
    if(cur->reference == 0)
1340
        cur->reference = DELAYED_PIC_REF;
1341

    
1342
    out = h->delayed_pic[0];
1343
    out_idx = 0;
1344
    for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
1345
        if(h->delayed_pic[i]->poc < out->poc){
1346
            out = h->delayed_pic[i];
1347
            out_idx = i;
1348
        }
1349
    if(s->avctx->has_b_frames == 0 && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset))
1350
        h->next_outputed_poc= INT_MIN;
1351
    out_of_order = out->poc < h->next_outputed_poc;
1352

    
1353
    if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames)
1354
        { }
1355
    else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT)
1356
       || (s->low_delay &&
1357
        ((h->next_outputed_poc != INT_MIN && out->poc > h->next_outputed_poc + 2)
1358
         || cur->pict_type == FF_B_TYPE)))
1359
    {
1360
        s->low_delay = 0;
1361
        s->avctx->has_b_frames++;
1362
    }
1363

    
1364
    if(out_of_order || pics > s->avctx->has_b_frames){
1365
        out->reference &= ~DELAYED_PIC_REF;
1366
        for(i=out_idx; h->delayed_pic[i]; i++)
1367
            h->delayed_pic[i] = h->delayed_pic[i+1];
1368
    }
1369
    if(!out_of_order && pics > s->avctx->has_b_frames){
1370
        h->next_output_pic = out;
1371
        if(out_idx==0 && h->delayed_pic[0] && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) {
1372
            h->next_outputed_poc = INT_MIN;
1373
        } else
1374
            h->next_outputed_poc = out->poc;
1375
    }else{
1376
        av_log(s->avctx, AV_LOG_DEBUG, "no picture\n");
1377
    }
1378

    
1379
    ff_thread_finish_setup(s->avctx);
1380
}
1381

    
1382
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){
1383
    MpegEncContext * const s = &h->s;
1384
    uint8_t *top_border;
1385
    int top_idx = 1;
1386

    
1387
    src_y  -=   linesize;
1388
    src_cb -= uvlinesize;
1389
    src_cr -= uvlinesize;
1390

    
1391
    if(!simple && FRAME_MBAFF){
1392
        if(s->mb_y&1){
1393
            if(!MB_MBAFF){
1394
                top_border = h->top_borders[0][s->mb_x];
1395
                AV_COPY128(top_border, src_y + 15*linesize);
1396
                if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1397
                    AV_COPY64(top_border+16, src_cb+7*uvlinesize);
1398
                    AV_COPY64(top_border+24, src_cr+7*uvlinesize);
1399
                }
1400
            }
1401
        }else if(MB_MBAFF){
1402
            top_idx = 0;
1403
        }else
1404
            return;
1405
    }
1406

    
1407
    top_border = h->top_borders[top_idx][s->mb_x];
1408
    // There are two lines saved, the line above the the top macroblock of a pair,
1409
    // and the line above the bottom macroblock
1410
    AV_COPY128(top_border, src_y + 16*linesize);
1411

    
1412
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1413
        AV_COPY64(top_border+16, src_cb+8*uvlinesize);
1414
        AV_COPY64(top_border+24, src_cr+8*uvlinesize);
1415
    }
1416
}
1417

    
1418
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){
1419
    MpegEncContext * const s = &h->s;
1420
    int deblock_left;
1421
    int deblock_top;
1422
    int top_idx = 1;
1423
    uint8_t *top_border_m1;
1424
    uint8_t *top_border;
1425

    
1426
    if(!simple && FRAME_MBAFF){
1427
        if(s->mb_y&1){
1428
            if(!MB_MBAFF)
1429
                return;
1430
        }else{
1431
            top_idx = MB_MBAFF ? 0 : 1;
1432
        }
1433
    }
1434

    
1435
    if(h->deblocking_filter == 2) {
1436
        deblock_left = h->left_type[0];
1437
        deblock_top  = h->top_type;
1438
    } else {
1439
        deblock_left = (s->mb_x > 0);
1440
        deblock_top =  (s->mb_y > !!MB_FIELD);
1441
    }
1442

    
1443
    src_y  -=   linesize + 1;
1444
    src_cb -= uvlinesize + 1;
1445
    src_cr -= uvlinesize + 1;
1446

    
1447
    top_border_m1 = h->top_borders[top_idx][s->mb_x-1];
1448
    top_border    = h->top_borders[top_idx][s->mb_x];
1449

    
1450
#define XCHG(a,b,xchg)\
1451
if (xchg) AV_SWAP64(b,a);\
1452
else      AV_COPY64(b,a);
1453

    
1454
    if(deblock_top){
1455
        if(deblock_left){
1456
            XCHG(top_border_m1+8, src_y -7, 1);
1457
        }
1458
        XCHG(top_border+0, src_y +1, xchg);
1459
        XCHG(top_border+8, src_y +9, 1);
1460
        if(s->mb_x+1 < s->mb_width){
1461
            XCHG(h->top_borders[top_idx][s->mb_x+1], src_y +17, 1);
1462
        }
1463
    }
1464

    
1465
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1466
        if(deblock_top){
1467
            if(deblock_left){
1468
                XCHG(top_border_m1+16, src_cb -7, 1);
1469
                XCHG(top_border_m1+24, src_cr -7, 1);
1470
            }
1471
            XCHG(top_border+16, src_cb+1, 1);
1472
            XCHG(top_border+24, src_cr+1, 1);
1473
        }
1474
    }
1475
}
1476

    
1477
static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
1478
    MpegEncContext * const s = &h->s;
1479
    const int mb_x= s->mb_x;
1480
    const int mb_y= s->mb_y;
1481
    const int mb_xy= h->mb_xy;
1482
    const int mb_type= s->current_picture.mb_type[mb_xy];
1483
    uint8_t  *dest_y, *dest_cb, *dest_cr;
1484
    int linesize, uvlinesize /*dct_offset*/;
1485
    int i;
1486
    int *block_offset = &h->block_offset[0];
1487
    const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
1488
    /* is_h264 should always be true if SVQ3 is disabled. */
1489
    const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
1490
    void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1491
    void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
1492

    
1493
    dest_y  = s->current_picture.data[0] + (mb_x + mb_y * s->linesize  ) * 16;
1494
    dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
1495
    dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
1496

    
1497
    s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
1498
    s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
1499

    
1500
    h->list_counts[mb_xy]= h->list_count;
1501

    
1502
    if (!simple && MB_FIELD) {
1503
        linesize   = h->mb_linesize   = s->linesize * 2;
1504
        uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
1505
        block_offset = &h->block_offset[24];
1506
        if(mb_y&1){ //FIXME move out of this function?
1507
            dest_y -= s->linesize*15;
1508
            dest_cb-= s->uvlinesize*7;
1509
            dest_cr-= s->uvlinesize*7;
1510
        }
1511
        if(FRAME_MBAFF) {
1512
            int list;
1513
            for(list=0; list<h->list_count; list++){
1514
                if(!USES_LIST(mb_type, list))
1515
                    continue;
1516
                if(IS_16X16(mb_type)){
1517
                    int8_t *ref = &h->ref_cache[list][scan8[0]];
1518
                    fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
1519
                }else{
1520
                    for(i=0; i<16; i+=4){
1521
                        int ref = h->ref_cache[list][scan8[i]];
1522
                        if(ref >= 0)
1523
                            fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
1524
                    }
1525
                }
1526
            }
1527
        }
1528
    } else {
1529
        linesize   = h->mb_linesize   = s->linesize;
1530
        uvlinesize = h->mb_uvlinesize = s->uvlinesize;
1531
//        dct_offset = s->linesize * 16;
1532
    }
1533

    
1534
    if (!simple && IS_INTRA_PCM(mb_type)) {
1535
        for (i=0; i<16; i++) {
1536
            memcpy(dest_y + i*  linesize, h->mb       + i*8, 16);
1537
        }
1538
        for (i=0; i<8; i++) {
1539
            memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4,  8);
1540
            memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4,  8);
1541
        }
1542
    } else {
1543
        if(IS_INTRA(mb_type)){
1544
            if(h->deblocking_filter)
1545
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
1546

    
1547
            if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1548
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
1549
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
1550
            }
1551

    
1552
            if(IS_INTRA4x4(mb_type)){
1553
                if(simple || !s->encoding){
1554
                    if(IS_8x8DCT(mb_type)){
1555
                        if(transform_bypass){
1556
                            idct_dc_add =
1557
                            idct_add    = s->dsp.add_pixels8;
1558
                        }else{
1559
                            idct_dc_add = h->h264dsp.h264_idct8_dc_add;
1560
                            idct_add    = h->h264dsp.h264_idct8_add;
1561
                        }
1562
                        for(i=0; i<16; i+=4){
1563
                            uint8_t * const ptr= dest_y + block_offset[i];
1564
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1565
                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1566
                                h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
1567
                            }else{
1568
                                const int nnz = h->non_zero_count_cache[ scan8[i] ];
1569
                                h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
1570
                                                            (h->topright_samples_available<<i)&0x4000, linesize);
1571
                                if(nnz){
1572
                                    if(nnz == 1 && h->mb[i*16])
1573
                                        idct_dc_add(ptr, h->mb + i*16, linesize);
1574
                                    else
1575
                                        idct_add   (ptr, h->mb + i*16, linesize);
1576
                                }
1577
                            }
1578
                        }
1579
                    }else{
1580
                        if(transform_bypass){
1581
                            idct_dc_add =
1582
                            idct_add    = s->dsp.add_pixels4;
1583
                        }else{
1584
                            idct_dc_add = h->h264dsp.h264_idct_dc_add;
1585
                            idct_add    = h->h264dsp.h264_idct_add;
1586
                        }
1587
                        for(i=0; i<16; i++){
1588
                            uint8_t * const ptr= dest_y + block_offset[i];
1589
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1590

    
1591
                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1592
                                h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
1593
                            }else{
1594
                                uint8_t *topright;
1595
                                int nnz, tr;
1596
                                if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
1597
                                    const int topright_avail= (h->topright_samples_available<<i)&0x8000;
1598
                                    assert(mb_y || linesize <= block_offset[i]);
1599
                                    if(!topright_avail){
1600
                                        tr= ptr[3 - linesize]*0x01010101;
1601
                                        topright= (uint8_t*) &tr;
1602
                                    }else
1603
                                        topright= ptr + 4 - linesize;
1604
                                }else
1605
                                    topright= NULL;
1606

    
1607
                                h->hpc.pred4x4[ dir ](ptr, topright, linesize);
1608
                                nnz = h->non_zero_count_cache[ scan8[i] ];
1609
                                if(nnz){
1610
                                    if(is_h264){
1611
                                        if(nnz == 1 && h->mb[i*16])
1612
                                            idct_dc_add(ptr, h->mb + i*16, linesize);
1613
                                        else
1614
                                            idct_add   (ptr, h->mb + i*16, linesize);
1615
                                    }else
1616
                                        ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
1617
                                }
1618
                            }
1619
                        }
1620
                    }
1621
                }
1622
            }else{
1623
                h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
1624
                if(is_h264){
1625
                    if(h->non_zero_count_cache[ scan8[LUMA_DC_BLOCK_INDEX] ]){
1626
                        if(!transform_bypass)
1627
                            h->h264dsp.h264_luma_dc_dequant_idct(h->mb, h->mb_luma_dc, h->dequant4_coeff[0][s->qscale][0]);
1628
                        else{
1629
                            static const uint8_t dc_mapping[16] = { 0*16, 1*16, 4*16, 5*16, 2*16, 3*16, 6*16, 7*16,
1630
                                                                    8*16, 9*16,12*16,13*16,10*16,11*16,14*16,15*16};
1631
                            for(i = 0; i < 16; i++)
1632
                                h->mb[dc_mapping[i]] = h->mb_luma_dc[i];
1633
                        }
1634
                    }
1635
                }else
1636
                    ff_svq3_luma_dc_dequant_idct_c(h->mb, h->mb_luma_dc, s->qscale);
1637
            }
1638
            if(h->deblocking_filter)
1639
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
1640
        }else if(is_h264){
1641
            hl_motion(h, dest_y, dest_cb, dest_cr,
1642
                      s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1643
                      s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1644
                      h->h264dsp.weight_h264_pixels_tab, h->h264dsp.biweight_h264_pixels_tab);
1645
        }
1646

    
1647

    
1648
        if(!IS_INTRA4x4(mb_type)){
1649
            if(is_h264){
1650
                if(IS_INTRA16x16(mb_type)){
1651
                    if(transform_bypass){
1652
                        if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
1653
                            h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
1654
                        }else{
1655
                            for(i=0; i<16; i++){
1656
                                if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1657
                                    s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
1658
                            }
1659
                        }
1660
                    }else{
1661
                         h->h264dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1662
                    }
1663
                }else if(h->cbp&15){
1664
                    if(transform_bypass){
1665
                        const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1666
                        idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
1667
                        for(i=0; i<16; i+=di){
1668
                            if(h->non_zero_count_cache[ scan8[i] ]){
1669
                                idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
1670
                            }
1671
                        }
1672
                    }else{
1673
                        if(IS_8x8DCT(mb_type)){
1674
                            h->h264dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1675
                        }else{
1676
                            h->h264dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1677
                        }
1678
                    }
1679
                }
1680
            }else{
1681
                for(i=0; i<16; i++){
1682
                    if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
1683
                        uint8_t * const ptr= dest_y + block_offset[i];
1684
                        ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1685
                    }
1686
                }
1687
            }
1688
        }
1689

    
1690
        if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
1691
            uint8_t *dest[2] = {dest_cb, dest_cr};
1692
            if(transform_bypass){
1693
                if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
1694
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
1695
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
1696
                }else{
1697
                    idct_add = s->dsp.add_pixels4;
1698
                    for(i=16; i<16+8; i++){
1699
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1700
                            idct_add   (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1701
                    }
1702
                }
1703
            }else{
1704
                if(is_h264){
1705
                    if(h->non_zero_count_cache[ scan8[CHROMA_DC_BLOCK_INDEX+0] ])
1706
                        chroma_dc_dequant_idct_c(h->mb + 16*16     , h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
1707
                    if(h->non_zero_count_cache[ scan8[CHROMA_DC_BLOCK_INDEX+1] ])
1708
                        chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp[1]][0]);
1709
                    h->h264dsp.h264_idct_add8(dest, block_offset,
1710
                                              h->mb, uvlinesize,
1711
                                              h->non_zero_count_cache);
1712
                }else{
1713
                    chroma_dc_dequant_idct_c(h->mb + 16*16     , h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
1714
                    chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp[1]][0]);
1715
                    for(i=16; i<16+8; i++){
1716
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
1717
                            uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
1718
                            ff_svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[s->qscale + 12] - 12, 2);
1719
                        }
1720
                    }
1721
                }
1722
            }
1723
        }
1724
    }
1725
    if(h->cbp || IS_INTRA(mb_type))
1726
        s->dsp.clear_blocks(h->mb);
1727
}
1728

    
1729
/**
1730
 * Process a macroblock; this case avoids checks for expensive uncommon cases.
1731
 */
1732
static void hl_decode_mb_simple(H264Context *h){
1733
    hl_decode_mb_internal(h, 1);
1734
}
1735

    
1736
/**
1737
 * Process a macroblock; this handles edge cases, such as interlacing.
1738
 */
1739
static void av_noinline hl_decode_mb_complex(H264Context *h){
1740
    hl_decode_mb_internal(h, 0);
1741
}
1742

    
1743
void ff_h264_hl_decode_mb(H264Context *h){
1744
    MpegEncContext * const s = &h->s;
1745
    const int mb_xy= h->mb_xy;
1746
    const int mb_type= s->current_picture.mb_type[mb_xy];
1747
    int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1748

    
1749
    if (is_complex)
1750
        hl_decode_mb_complex(h);
1751
    else hl_decode_mb_simple(h);
1752
}
1753

    
1754
static int pred_weight_table(H264Context *h){
1755
    MpegEncContext * const s = &h->s;
1756
    int list, i;
1757
    int luma_def, chroma_def;
1758

    
1759
    h->use_weight= 0;
1760
    h->use_weight_chroma= 0;
1761
    h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
1762
    if(CHROMA)
1763
        h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
1764
    luma_def = 1<<h->luma_log2_weight_denom;
1765
    chroma_def = 1<<h->chroma_log2_weight_denom;
1766

    
1767
    for(list=0; list<2; list++){
1768
        h->luma_weight_flag[list]   = 0;
1769
        h->chroma_weight_flag[list] = 0;
1770
        for(i=0; i<h->ref_count[list]; i++){
1771
            int luma_weight_flag, chroma_weight_flag;
1772

    
1773
            luma_weight_flag= get_bits1(&s->gb);
1774
            if(luma_weight_flag){
1775
                h->luma_weight[i][list][0]= get_se_golomb(&s->gb);
1776
                h->luma_weight[i][list][1]= get_se_golomb(&s->gb);
1777
                if(   h->luma_weight[i][list][0] != luma_def
1778
                   || h->luma_weight[i][list][1] != 0) {
1779
                    h->use_weight= 1;
1780
                    h->luma_weight_flag[list]= 1;
1781
                }
1782
            }else{
1783
                h->luma_weight[i][list][0]= luma_def;
1784
                h->luma_weight[i][list][1]= 0;
1785
            }
1786

    
1787
            if(CHROMA){
1788
                chroma_weight_flag= get_bits1(&s->gb);
1789
                if(chroma_weight_flag){
1790
                    int j;
1791
                    for(j=0; j<2; j++){
1792
                        h->chroma_weight[i][list][j][0]= get_se_golomb(&s->gb);
1793
                        h->chroma_weight[i][list][j][1]= get_se_golomb(&s->gb);
1794
                        if(   h->chroma_weight[i][list][j][0] != chroma_def
1795
                           || h->chroma_weight[i][list][j][1] != 0) {
1796
                            h->use_weight_chroma= 1;
1797
                            h->chroma_weight_flag[list]= 1;
1798
                        }
1799
                    }
1800
                }else{
1801
                    int j;
1802
                    for(j=0; j<2; j++){
1803
                        h->chroma_weight[i][list][j][0]= chroma_def;
1804
                        h->chroma_weight[i][list][j][1]= 0;
1805
                    }
1806
                }
1807
            }
1808
        }
1809
        if(h->slice_type_nos != FF_B_TYPE) break;
1810
    }
1811
    h->use_weight= h->use_weight || h->use_weight_chroma;
1812
    return 0;
1813
}
1814

    
1815
/**
1816
 * Initialize implicit_weight table.
1817
 * @param field  0/1 initialize the weight for interlaced MBAFF
1818
 *                -1 initializes the rest
1819
 */
1820
static void implicit_weight_table(H264Context *h, int field){
1821
    MpegEncContext * const s = &h->s;
1822
    int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
1823

    
1824
    for (i = 0; i < 2; i++) {
1825
        h->luma_weight_flag[i]   = 0;
1826
        h->chroma_weight_flag[i] = 0;
1827
    }
1828

    
1829
    if(field < 0){
1830
        cur_poc = s->current_picture_ptr->poc;
1831
    if(   h->ref_count[0] == 1 && h->ref_count[1] == 1 && !FRAME_MBAFF
1832
       && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
1833
        h->use_weight= 0;
1834
        h->use_weight_chroma= 0;
1835
        return;
1836
    }
1837
        ref_start= 0;
1838
        ref_count0= h->ref_count[0];
1839
        ref_count1= h->ref_count[1];
1840
    }else{
1841
        cur_poc = s->current_picture_ptr->field_poc[field];
1842
        ref_start= 16;
1843
        ref_count0= 16+2*h->ref_count[0];
1844
        ref_count1= 16+2*h->ref_count[1];
1845
    }
1846

    
1847
    h->use_weight= 2;
1848
    h->use_weight_chroma= 2;
1849
    h->luma_log2_weight_denom= 5;
1850
    h->chroma_log2_weight_denom= 5;
1851

    
1852
    for(ref0=ref_start; ref0 < ref_count0; ref0++){
1853
        int poc0 = h->ref_list[0][ref0].poc;
1854
        for(ref1=ref_start; ref1 < ref_count1; ref1++){
1855
            int poc1 = h->ref_list[1][ref1].poc;
1856
            int td = av_clip(poc1 - poc0, -128, 127);
1857
            int w= 32;
1858
            if(td){
1859
                int tb = av_clip(cur_poc - poc0, -128, 127);
1860
                int tx = (16384 + (FFABS(td) >> 1)) / td;
1861
                int dist_scale_factor = (tb*tx + 32) >> 8;
1862
                if(dist_scale_factor >= -64 && dist_scale_factor <= 128)
1863
                    w = 64 - dist_scale_factor;
1864
            }
1865
            if(field<0){
1866
                h->implicit_weight[ref0][ref1][0]=
1867
                h->implicit_weight[ref0][ref1][1]= w;
1868
            }else{
1869
                h->implicit_weight[ref0][ref1][field]=w;
1870
            }
1871
        }
1872
    }
1873
}
1874

    
1875
/**
1876
 * instantaneous decoder refresh.
1877
 */
1878
static void idr(H264Context *h){
1879
    ff_h264_remove_all_refs(h);
1880
    h->prev_frame_num= 0;
1881
    h->prev_frame_num_offset= 0;
1882
    h->prev_poc_msb=
1883
    h->prev_poc_lsb= 0;
1884
}
1885

    
1886
/* forget old pics after a seek */
1887
static void flush_dpb(AVCodecContext *avctx){
1888
    H264Context *h= avctx->priv_data;
1889
    int i;
1890
    for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
1891
        if(h->delayed_pic[i])
1892
            h->delayed_pic[i]->reference= 0;
1893
        h->delayed_pic[i]= NULL;
1894
    }
1895
    h->outputed_poc=h->next_outputed_poc= INT_MIN;
1896
    h->prev_interlaced_frame = 1;
1897
    idr(h);
1898
    if(h->s.current_picture_ptr)
1899
        h->s.current_picture_ptr->reference= 0;
1900
    h->s.first_field= 0;
1901
    ff_h264_reset_sei(h);
1902
    ff_mpeg_flush(avctx);
1903
}
1904

    
1905
static int init_poc(H264Context *h){
1906
    MpegEncContext * const s = &h->s;
1907
    const int max_frame_num= 1<<h->sps.log2_max_frame_num;
1908
    int field_poc[2];
1909
    Picture *cur = s->current_picture_ptr;
1910

    
1911
    h->frame_num_offset= h->prev_frame_num_offset;
1912
    if(h->frame_num < h->prev_frame_num)
1913
        h->frame_num_offset += max_frame_num;
1914

    
1915
    if(h->sps.poc_type==0){
1916
        const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
1917

    
1918
        if     (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
1919
            h->poc_msb = h->prev_poc_msb + max_poc_lsb;
1920
        else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
1921
            h->poc_msb = h->prev_poc_msb - max_poc_lsb;
1922
        else
1923
            h->poc_msb = h->prev_poc_msb;
1924
//printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
1925
        field_poc[0] =
1926
        field_poc[1] = h->poc_msb + h->poc_lsb;
1927
        if(s->picture_structure == PICT_FRAME)
1928
            field_poc[1] += h->delta_poc_bottom;
1929
    }else if(h->sps.poc_type==1){
1930
        int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
1931
        int i;
1932

    
1933
        if(h->sps.poc_cycle_length != 0)
1934
            abs_frame_num = h->frame_num_offset + h->frame_num;
1935
        else
1936
            abs_frame_num = 0;
1937

    
1938
        if(h->nal_ref_idc==0 && abs_frame_num > 0)
1939
            abs_frame_num--;
1940

    
1941
        expected_delta_per_poc_cycle = 0;
1942
        for(i=0; i < h->sps.poc_cycle_length; i++)
1943
            expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
1944

    
1945
        if(abs_frame_num > 0){
1946
            int poc_cycle_cnt          = (abs_frame_num - 1) / h->sps.poc_cycle_length;
1947
            int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
1948

    
1949
            expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
1950
            for(i = 0; i <= frame_num_in_poc_cycle; i++)
1951
                expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
1952
        } else
1953
            expectedpoc = 0;
1954

    
1955
        if(h->nal_ref_idc == 0)
1956
            expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
1957

    
1958
        field_poc[0] = expectedpoc + h->delta_poc[0];
1959
        field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
1960

    
1961
        if(s->picture_structure == PICT_FRAME)
1962
            field_poc[1] += h->delta_poc[1];
1963
    }else{
1964
        int poc= 2*(h->frame_num_offset + h->frame_num);
1965

    
1966
        if(!h->nal_ref_idc)
1967
            poc--;
1968

    
1969
        field_poc[0]= poc;
1970
        field_poc[1]= poc;
1971
    }
1972

    
1973
    if(s->picture_structure != PICT_BOTTOM_FIELD)
1974
        s->current_picture_ptr->field_poc[0]= field_poc[0];
1975
    if(s->picture_structure != PICT_TOP_FIELD)
1976
        s->current_picture_ptr->field_poc[1]= field_poc[1];
1977
    cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
1978

    
1979
    return 0;
1980
}
1981

    
1982

    
1983
/**
1984
 * initialize scan tables
1985
 */
1986
static void init_scan_tables(H264Context *h){
1987
    int i;
1988
    for(i=0; i<16; i++){
1989
#define T(x) (x>>2) | ((x<<2) & 0xF)
1990
        h->zigzag_scan[i] = T(zigzag_scan[i]);
1991
        h-> field_scan[i] = T( field_scan[i]);
1992
#undef T
1993
    }
1994
    for(i=0; i<64; i++){
1995
#define T(x) (x>>3) | ((x&7)<<3)
1996
        h->zigzag_scan8x8[i]       = T(ff_zigzag_direct[i]);
1997
        h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
1998
        h->field_scan8x8[i]        = T(field_scan8x8[i]);
1999
        h->field_scan8x8_cavlc[i]  = T(field_scan8x8_cavlc[i]);
2000
#undef T
2001
    }
2002
    if(h->sps.transform_bypass){ //FIXME same ugly
2003
        h->zigzag_scan_q0          = zigzag_scan;
2004
        h->zigzag_scan8x8_q0       = ff_zigzag_direct;
2005
        h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
2006
        h->field_scan_q0           = field_scan;
2007
        h->field_scan8x8_q0        = field_scan8x8;
2008
        h->field_scan8x8_cavlc_q0  = field_scan8x8_cavlc;
2009
    }else{
2010
        h->zigzag_scan_q0          = h->zigzag_scan;
2011
        h->zigzag_scan8x8_q0       = h->zigzag_scan8x8;
2012
        h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
2013
        h->field_scan_q0           = h->field_scan;
2014
        h->field_scan8x8_q0        = h->field_scan8x8;
2015
        h->field_scan8x8_cavlc_q0  = h->field_scan8x8_cavlc;
2016
    }
2017
}
2018

    
2019
static void field_end(H264Context *h, int in_setup){
2020
    MpegEncContext * const s = &h->s;
2021
    AVCodecContext * const avctx= s->avctx;
2022
    s->mb_y= 0;
2023

    
2024
    if (!in_setup && !s->dropable)
2025
        ff_thread_report_progress((AVFrame*)s->current_picture_ptr, (16*s->mb_height >> FIELD_PICTURE) - 1,
2026
                                 s->picture_structure==PICT_BOTTOM_FIELD);
2027

    
2028
    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2029
        ff_vdpau_h264_set_reference_frames(s);
2030

    
2031
    if(in_setup || !(avctx->active_thread_type&FF_THREAD_FRAME)){
2032
        if(!s->dropable) {
2033
            ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
2034
            h->prev_poc_msb= h->poc_msb;
2035
            h->prev_poc_lsb= h->poc_lsb;
2036
        }
2037
        h->prev_frame_num_offset= h->frame_num_offset;
2038
        h->prev_frame_num= h->frame_num;
2039
        h->outputed_poc = h->next_outputed_poc;
2040
    }
2041

    
2042
    if (avctx->hwaccel) {
2043
        if (avctx->hwaccel->end_frame(avctx) < 0)
2044
            av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
2045
    }
2046

    
2047
    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2048
        ff_vdpau_h264_picture_complete(s);
2049

    
2050
    /*
2051
     * FIXME: Error handling code does not seem to support interlaced
2052
     * when slices span multiple rows
2053
     * The ff_er_add_slice calls don't work right for bottom
2054
     * fields; they cause massive erroneous error concealing
2055
     * Error marking covers both fields (top and bottom).
2056
     * This causes a mismatched s->error_count
2057
     * and a bad error table. Further, the error count goes to
2058
     * INT_MAX when called for bottom field, because mb_y is
2059
     * past end by one (callers fault) and resync_mb_y != 0
2060
     * causes problems for the first MB line, too.
2061
     */
2062
    if (!FIELD_PICTURE)
2063
        ff_er_frame_end(s);
2064

    
2065
    MPV_frame_end(s);
2066

    
2067
    h->current_slice=0;
2068
}
2069

    
2070
/**
2071
 * Replicate H264 "master" context to thread contexts.
2072
 */
2073
static void clone_slice(H264Context *dst, H264Context *src)
2074
{
2075
    memcpy(dst->block_offset,     src->block_offset, sizeof(dst->block_offset));
2076
    dst->s.current_picture_ptr  = src->s.current_picture_ptr;
2077
    dst->s.current_picture      = src->s.current_picture;
2078
    dst->s.linesize             = src->s.linesize;
2079
    dst->s.uvlinesize           = src->s.uvlinesize;
2080
    dst->s.first_field          = src->s.first_field;
2081

    
2082
    dst->prev_poc_msb           = src->prev_poc_msb;
2083
    dst->prev_poc_lsb           = src->prev_poc_lsb;
2084
    dst->prev_frame_num_offset  = src->prev_frame_num_offset;
2085
    dst->prev_frame_num         = src->prev_frame_num;
2086
    dst->short_ref_count        = src->short_ref_count;
2087

    
2088
    memcpy(dst->short_ref,        src->short_ref,        sizeof(dst->short_ref));
2089
    memcpy(dst->long_ref,         src->long_ref,         sizeof(dst->long_ref));
2090
    memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
2091
    memcpy(dst->ref_list,         src->ref_list,         sizeof(dst->ref_list));
2092

    
2093
    memcpy(dst->dequant4_coeff,   src->dequant4_coeff,   sizeof(src->dequant4_coeff));
2094
    memcpy(dst->dequant8_coeff,   src->dequant8_coeff,   sizeof(src->dequant8_coeff));
2095
}
2096

    
2097
/**
2098
 * computes profile from profile_idc and constraint_set?_flags
2099
 *
2100
 * @param sps SPS
2101
 *
2102
 * @return profile as defined by FF_PROFILE_H264_*
2103
 */
2104
int ff_h264_get_profile(SPS *sps)
2105
{
2106
    int profile = sps->profile_idc;
2107

    
2108
    switch(sps->profile_idc) {
2109
    case FF_PROFILE_H264_BASELINE:
2110
        // constraint_set1_flag set to 1
2111
        profile |= (sps->constraint_set_flags & 1<<1) ? FF_PROFILE_H264_CONSTRAINED : 0;
2112
        break;
2113
    case FF_PROFILE_H264_HIGH_10:
2114
    case FF_PROFILE_H264_HIGH_422:
2115
    case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
2116
        // constraint_set3_flag set to 1
2117
        profile |= (sps->constraint_set_flags & 1<<3) ? FF_PROFILE_H264_INTRA : 0;
2118
        break;
2119
    }
2120

    
2121
    return profile;
2122
}
2123

    
2124
/**
2125
 * decodes a slice header.
2126
 * This will also call MPV_common_init() and frame_start() as needed.
2127
 *
2128
 * @param h h264context
2129
 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
2130
 *
2131
 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
2132
 */
2133
static int decode_slice_header(H264Context *h, H264Context *h0){
2134
    MpegEncContext * const s = &h->s;
2135
    MpegEncContext * const s0 = &h0->s;
2136
    unsigned int first_mb_in_slice;
2137
    unsigned int pps_id;
2138
    int num_ref_idx_active_override_flag;
2139
    unsigned int slice_type, tmp, i, j;
2140
    int default_ref_list_done = 0;
2141
    int last_pic_structure;
2142

    
2143
    s->dropable= h->nal_ref_idc == 0;
2144

    
2145
    if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
2146
        s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
2147
        s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
2148
    }else{
2149
        s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
2150
        s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
2151
    }
2152

    
2153
    first_mb_in_slice= get_ue_golomb(&s->gb);
2154

    
2155
    if(first_mb_in_slice == 0){ //FIXME better field boundary detection
2156
        if(h0->current_slice && FIELD_PICTURE){
2157
            field_end(h, 1);
2158
        }
2159

    
2160
        h0->current_slice = 0;
2161
        if (!s0->first_field)
2162
            s->current_picture_ptr= NULL;
2163
    }
2164

    
2165
    slice_type= get_ue_golomb_31(&s->gb);
2166
    if(slice_type > 9){
2167
        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);
2168
        return -1;
2169
    }
2170
    if(slice_type > 4){
2171
        slice_type -= 5;
2172
        h->slice_type_fixed=1;
2173
    }else
2174
        h->slice_type_fixed=0;
2175

    
2176
    slice_type= golomb_to_pict_type[ slice_type ];
2177
    if (slice_type == FF_I_TYPE
2178
        || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
2179
        default_ref_list_done = 1;
2180
    }
2181
    h->slice_type= slice_type;
2182
    h->slice_type_nos= slice_type & 3;
2183

    
2184
    s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
2185

    
2186
    pps_id= get_ue_golomb(&s->gb);
2187
    if(pps_id>=MAX_PPS_COUNT){
2188
        av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
2189
        return -1;
2190
    }
2191
    if(!h0->pps_buffers[pps_id]) {
2192
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
2193
        return -1;
2194
    }
2195
    h->pps= *h0->pps_buffers[pps_id];
2196

    
2197
    if(!h0->sps_buffers[h->pps.sps_id]) {
2198
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
2199
        return -1;
2200
    }
2201
    h->sps = *h0->sps_buffers[h->pps.sps_id];
2202

    
2203
    s->avctx->profile = ff_h264_get_profile(&h->sps);
2204
    s->avctx->level   = h->sps.level_idc;
2205
    s->avctx->refs    = h->sps.ref_frame_count;
2206

    
2207
    if(h == h0 && h->dequant_coeff_pps != pps_id){
2208
        h->dequant_coeff_pps = pps_id;
2209
        init_dequant_tables(h);
2210
    }
2211

    
2212
    s->mb_width= h->sps.mb_width;
2213
    s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
2214

    
2215
    h->b_stride=  s->mb_width*4;
2216

    
2217
    s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
2218
    if(h->sps.frame_mbs_only_flag)
2219
        s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
2220
    else
2221
        s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 7);
2222

    
2223
    if (s->context_initialized
2224
        && (   s->width != s->avctx->width || s->height != s->avctx->height
2225
            || av_cmp_q(h->sps.sar, s->avctx->sample_aspect_ratio))) {
2226
        if(h != h0) {
2227
            av_log_missing_feature(s->avctx, "Width/height changing with threads is", 0);
2228
            return -1;   // width / height changed during parallelized decoding
2229
        }
2230
        free_tables(h, 0);
2231
        flush_dpb(s->avctx);
2232
        MPV_common_end(s);
2233
    }
2234
    if (!s->context_initialized) {
2235
        if(h != h0)
2236
            return -1;  // we cant (re-)initialize context during parallel decoding
2237

    
2238
        avcodec_set_dimensions(s->avctx, s->width, s->height);
2239
        s->avctx->sample_aspect_ratio= h->sps.sar;
2240
        av_assert0(s->avctx->sample_aspect_ratio.den);
2241

    
2242
        if(h->sps.video_signal_type_present_flag){
2243
            s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
2244
            if(h->sps.colour_description_present_flag){
2245
                s->avctx->color_primaries = h->sps.color_primaries;
2246
                s->avctx->color_trc       = h->sps.color_trc;
2247
                s->avctx->colorspace      = h->sps.colorspace;
2248
            }
2249
        }
2250

    
2251
        if(h->sps.timing_info_present_flag){
2252
            int64_t den= h->sps.time_scale;
2253
            if(h->x264_build < 44U)
2254
                den *= 2;
2255
            av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
2256
                      h->sps.num_units_in_tick, den, 1<<30);
2257
        }
2258
        s->avctx->pix_fmt = s->avctx->get_format(s->avctx,
2259
                                                 s->avctx->codec->pix_fmts ?
2260
                                                 s->avctx->codec->pix_fmts :
2261
                                                 s->avctx->color_range == AVCOL_RANGE_JPEG ?
2262
                                                 hwaccel_pixfmt_list_h264_jpeg_420 :
2263
                                                 ff_hwaccel_pixfmt_list_420);
2264
        s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
2265

    
2266
        if (MPV_common_init(s) < 0)
2267
            return -1;
2268
        s->first_field = 0;
2269
        h->prev_interlaced_frame = 1;
2270

    
2271
        init_scan_tables(h);
2272
        ff_h264_alloc_tables(h);
2273

    
2274
        if (!HAVE_THREADS || !(s->avctx->active_thread_type&FF_THREAD_SLICE)) {
2275
            if (context_init(h) < 0)
2276
                return -1;
2277
        } else {
2278
            for(i = 1; i < s->avctx->thread_count; i++) {
2279
                H264Context *c;
2280
                c = h->thread_context[i] = av_malloc(sizeof(H264Context));
2281
                memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
2282
                memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
2283
                c->h264dsp = h->h264dsp;
2284
                c->sps = h->sps;
2285
                c->pps = h->pps;
2286
                init_scan_tables(c);
2287
                clone_tables(c, h, i);
2288
            }
2289

    
2290
            for(i = 0; i < s->avctx->thread_count; i++)
2291
                if(context_init(h->thread_context[i]) < 0)
2292
                    return -1;
2293
        }
2294
    }
2295

    
2296
    h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
2297

    
2298
    h->mb_mbaff = 0;
2299
    h->mb_aff_frame = 0;
2300
    last_pic_structure = s0->picture_structure;
2301
    if(h->sps.frame_mbs_only_flag){
2302
        s->picture_structure= PICT_FRAME;
2303
    }else{
2304
        if(get_bits1(&s->gb)) { //field_pic_flag
2305
            s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
2306
        } else {
2307
            s->picture_structure= PICT_FRAME;
2308
            h->mb_aff_frame = h->sps.mb_aff;
2309
        }
2310
    }
2311
    h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
2312

    
2313
    if(h0->current_slice == 0){
2314
        if(h->frame_num != h->prev_frame_num &&
2315
          (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num) < (h->frame_num - h->sps.ref_frame_count))
2316
            h->prev_frame_num = h->frame_num - h->sps.ref_frame_count - 1;
2317

    
2318
        while(h->frame_num !=  h->prev_frame_num &&
2319
              h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
2320
            Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
2321
            av_log(h->s.avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
2322
            if (ff_h264_frame_start(h) < 0)
2323
                return -1;
2324
            h->prev_frame_num++;
2325
            h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
2326
            s->current_picture_ptr->frame_num= h->prev_frame_num;
2327
            ff_thread_report_progress((AVFrame*)s->current_picture_ptr, INT_MAX, 0);
2328
            ff_thread_report_progress((AVFrame*)s->current_picture_ptr, INT_MAX, 1);
2329
            ff_generate_sliding_window_mmcos(h);
2330
            ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
2331
            /* Error concealment: if a ref is missing, copy the previous ref in its place.
2332
             * FIXME: avoiding a memcpy would be nice, but ref handling makes many assumptions
2333
             * about there being no actual duplicates.
2334
             * FIXME: this doesn't copy padding for out-of-frame motion vectors.  Given we're
2335
             * concealing a lost frame, this probably isn't noticable by comparison, but it should
2336
             * be fixed. */
2337
            if (h->short_ref_count) {
2338
                if (prev) {
2339
                    av_image_copy(h->short_ref[0]->data, h->short_ref[0]->linesize,
2340
                                  (const uint8_t**)prev->data, prev->linesize,
2341
                                  s->avctx->pix_fmt, s->mb_width*16, s->mb_height*16);
2342
                    h->short_ref[0]->poc = prev->poc+2;
2343
                }
2344
                h->short_ref[0]->frame_num = h->prev_frame_num;
2345
            }
2346
        }
2347

    
2348
        /* See if we have a decoded first field looking for a pair... */
2349
        if (s0->first_field) {
2350
            assert(s0->current_picture_ptr);
2351
            assert(s0->current_picture_ptr->data[0]);
2352
            assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
2353

    
2354
            /* figure out if we have a complementary field pair */
2355
            if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
2356
                /*
2357
                 * Previous field is unmatched. Don't display it, but let it
2358
                 * remain for reference if marked as such.
2359
                 */
2360
                s0->current_picture_ptr = NULL;
2361
                s0->first_field = FIELD_PICTURE;
2362

    
2363
            } else {
2364
                if (h->nal_ref_idc &&
2365
                        s0->current_picture_ptr->reference &&
2366
                        s0->current_picture_ptr->frame_num != h->frame_num) {
2367
                    /*
2368
                     * This and previous field were reference, but had
2369
                     * different frame_nums. Consider this field first in
2370
                     * pair. Throw away previous field except for reference
2371
                     * purposes.
2372
                     */
2373
                    s0->first_field = 1;
2374
                    s0->current_picture_ptr = NULL;
2375

    
2376
                } else {
2377
                    /* Second field in complementary pair */
2378
                    s0->first_field = 0;
2379
                }
2380
            }
2381

    
2382
        } else {
2383
            /* Frame or first field in a potentially complementary pair */
2384
            assert(!s0->current_picture_ptr);
2385
            s0->first_field = FIELD_PICTURE;
2386
        }
2387

    
2388
        if((!FIELD_PICTURE || s0->first_field) && ff_h264_frame_start(h) < 0) {
2389
            s0->first_field = 0;
2390
            return -1;
2391
        }
2392
    }
2393
    if(h != h0)
2394
        clone_slice(h, h0);
2395

    
2396
    s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
2397

    
2398
    assert(s->mb_num == s->mb_width * s->mb_height);
2399
    if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
2400
       first_mb_in_slice                    >= s->mb_num){
2401
        av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
2402
        return -1;
2403
    }
2404
    s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
2405
    s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
2406
    if (s->picture_structure == PICT_BOTTOM_FIELD)
2407
        s->resync_mb_y = s->mb_y = s->mb_y + 1;
2408
    assert(s->mb_y < s->mb_height);
2409

    
2410
    if(s->picture_structure==PICT_FRAME){
2411
        h->curr_pic_num=   h->frame_num;
2412
        h->max_pic_num= 1<< h->sps.log2_max_frame_num;
2413
    }else{
2414
        h->curr_pic_num= 2*h->frame_num + 1;
2415
        h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
2416
    }
2417

    
2418
    if(h->nal_unit_type == NAL_IDR_SLICE){
2419
        get_ue_golomb(&s->gb); /* idr_pic_id */
2420
    }
2421

    
2422
    if(h->sps.poc_type==0){
2423
        h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
2424

    
2425
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
2426
            h->delta_poc_bottom= get_se_golomb(&s->gb);
2427
        }
2428
    }
2429

    
2430
    if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
2431
        h->delta_poc[0]= get_se_golomb(&s->gb);
2432

    
2433
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
2434
            h->delta_poc[1]= get_se_golomb(&s->gb);
2435
    }
2436

    
2437
    init_poc(h);
2438

    
2439
    if(h->pps.redundant_pic_cnt_present){
2440
        h->redundant_pic_count= get_ue_golomb(&s->gb);
2441
    }
2442

    
2443
    //set defaults, might be overridden a few lines later
2444
    h->ref_count[0]= h->pps.ref_count[0];
2445
    h->ref_count[1]= h->pps.ref_count[1];
2446

    
2447
    if(h->slice_type_nos != FF_I_TYPE){
2448
        if(h->slice_type_nos == FF_B_TYPE){
2449
            h->direct_spatial_mv_pred= get_bits1(&s->gb);
2450
        }
2451
        num_ref_idx_active_override_flag= get_bits1(&s->gb);
2452

    
2453
        if(num_ref_idx_active_override_flag){
2454
            h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
2455
            if(h->slice_type_nos==FF_B_TYPE)
2456
                h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
2457

    
2458
            if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
2459
                av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
2460
                h->ref_count[0]= h->ref_count[1]= 1;
2461
                return -1;
2462
            }
2463
        }
2464
        if(h->slice_type_nos == FF_B_TYPE)
2465
            h->list_count= 2;
2466
        else
2467
            h->list_count= 1;
2468
    }else
2469
        h->list_count= 0;
2470

    
2471
    if(!default_ref_list_done){
2472
        ff_h264_fill_default_ref_list(h);
2473
    }
2474

    
2475
    if(h->slice_type_nos!=FF_I_TYPE && ff_h264_decode_ref_pic_list_reordering(h) < 0)
2476
        return -1;
2477

    
2478
    //FIXME mt gives valgrind warnings and crashes if this is uncommented
2479
    /*
2480

2481
    if(h->slice_type_nos!=FF_I_TYPE){
2482
        s->last_picture_ptr= &h->ref_list[0][0];
2483
        ff_copy_picture(&s->last_picture, s->last_picture_ptr);
2484
    }
2485
    if(h->slice_type_nos==FF_B_TYPE){
2486
        s->next_picture_ptr= &h->ref_list[1][0];
2487
        ff_copy_picture(&s->next_picture, s->next_picture_ptr);
2488
    }
2489

2490
    */
2491

    
2492
    if(   (h->pps.weighted_pred          && h->slice_type_nos == FF_P_TYPE )
2493
       ||  (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
2494
        pred_weight_table(h);
2495
    else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE){
2496
        implicit_weight_table(h, -1);
2497
    }else {
2498
        h->use_weight = 0;
2499
        for (i = 0; i < 2; i++) {
2500
            h->luma_weight_flag[i]   = 0;
2501
            h->chroma_weight_flag[i] = 0;
2502
        }
2503
    }
2504

    
2505
    if(h->nal_ref_idc)
2506
        ff_h264_decode_ref_pic_marking(h0, &s->gb);
2507

    
2508
    if(FRAME_MBAFF){
2509
        ff_h264_fill_mbaff_ref_list(h);
2510

    
2511
        if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE){
2512
            implicit_weight_table(h, 0);
2513
            implicit_weight_table(h, 1);
2514
        }
2515
    }
2516

    
2517
    if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
2518
        ff_h264_direct_dist_scale_factor(h);
2519
    ff_h264_direct_ref_list_init(h);
2520

    
2521
    if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
2522
        tmp = get_ue_golomb_31(&s->gb);
2523
        if(tmp > 2){
2524
            av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
2525
            return -1;
2526
        }
2527
        h->cabac_init_idc= tmp;
2528
    }
2529

    
2530
    h->last_qscale_diff = 0;
2531
    tmp = h->pps.init_qp + get_se_golomb(&s->gb);
2532
    if(tmp>51){
2533
        av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
2534
        return -1;
2535
    }
2536
    s->qscale= tmp;
2537
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2538
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2539
    //FIXME qscale / qp ... stuff
2540
    if(h->slice_type == FF_SP_TYPE){
2541
        get_bits1(&s->gb); /* sp_for_switch_flag */
2542
    }
2543
    if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
2544
        get_se_golomb(&s->gb); /* slice_qs_delta */
2545
    }
2546

    
2547
    h->deblocking_filter = 1;
2548
    h->slice_alpha_c0_offset = 52;
2549
    h->slice_beta_offset = 52;
2550
    if( h->pps.deblocking_filter_parameters_present ) {
2551
        tmp= get_ue_golomb_31(&s->gb);
2552
        if(tmp > 2){
2553
            av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
2554
            return -1;
2555
        }
2556
        h->deblocking_filter= tmp;
2557
        if(h->deblocking_filter < 2)
2558
            h->deblocking_filter^= 1; // 1<->0
2559

    
2560
        if( h->deblocking_filter ) {
2561
            h->slice_alpha_c0_offset += get_se_golomb(&s->gb) << 1;
2562
            h->slice_beta_offset     += get_se_golomb(&s->gb) << 1;
2563
            if(   h->slice_alpha_c0_offset > 104U
2564
               || h->slice_beta_offset     > 104U){
2565
                av_log(s->avctx, AV_LOG_ERROR, "deblocking filter parameters %d %d out of range\n", h->slice_alpha_c0_offset, h->slice_beta_offset);
2566
                return -1;
2567
            }
2568
        }
2569
    }
2570

    
2571
    if(   s->avctx->skip_loop_filter >= AVDISCARD_ALL
2572
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
2573
       ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR  && h->slice_type_nos == FF_B_TYPE)
2574
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2575
        h->deblocking_filter= 0;
2576

    
2577
    if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
2578
        if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
2579
            /* Cheat slightly for speed:
2580
               Do not bother to deblock across slices. */
2581
            h->deblocking_filter = 2;
2582
        } else {
2583
            h0->max_contexts = 1;
2584
            if(!h0->single_decode_warning) {
2585
                av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
2586
                h0->single_decode_warning = 1;
2587
            }
2588
            if(h != h0)
2589
                return 1; // deblocking switched inside frame
2590
        }
2591
    }
2592
    h->qp_thresh= 15 + 52 - FFMIN(h->slice_alpha_c0_offset, h->slice_beta_offset) - FFMAX3(0, h->pps.chroma_qp_index_offset[0], h->pps.chroma_qp_index_offset[1]);
2593

    
2594
#if 0 //FMO
2595
    if( h->pps.num_slice_groups > 1  && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
2596
        slice_group_change_cycle= get_bits(&s->gb, ?);
2597
#endif
2598

    
2599
    h0->last_slice_type = slice_type;
2600
    h->slice_num = ++h0->current_slice;
2601
    if(h->slice_num >= MAX_SLICES){
2602
        av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
2603
    }
2604

    
2605
    for(j=0; j<2; j++){
2606
        int id_list[16];
2607
        int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
2608
        for(i=0; i<16; i++){
2609
            id_list[i]= 60;
2610
            if(h->ref_list[j][i].data[0]){
2611
                int k;
2612
                uint8_t *base= h->ref_list[j][i].base[0];
2613
                for(k=0; k<h->short_ref_count; k++)
2614
                    if(h->short_ref[k]->base[0] == base){
2615
                        id_list[i]= k;
2616
                        break;
2617
                    }
2618
                for(k=0; k<h->long_ref_count; k++)
2619
                    if(h->long_ref[k] && h->long_ref[k]->base[0] == base){
2620
                        id_list[i]= h->short_ref_count + k;
2621
                        break;
2622
                    }
2623
            }
2624
        }
2625

    
2626
        ref2frm[0]=
2627
        ref2frm[1]= -1;
2628
        for(i=0; i<16; i++)
2629
            ref2frm[i+2]= 4*id_list[i]
2630
                          +(h->ref_list[j][i].reference&3);
2631
        ref2frm[18+0]=
2632
        ref2frm[18+1]= -1;
2633
        for(i=16; i<48; i++)
2634
            ref2frm[i+4]= 4*id_list[(i-16)>>1]
2635
                          +(h->ref_list[j][i].reference&3);
2636
    }
2637

    
2638
    //FIXME: fix draw_edges+PAFF+frame threads
2639
    h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE || (!h->sps.frame_mbs_only_flag && s->avctx->active_thread_type&FF_THREAD_FRAME)) ? 0 : 16;
2640
    h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
2641

    
2642
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
2643
        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",
2644
               h->slice_num,
2645
               (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
2646
               first_mb_in_slice,
2647
               av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
2648
               pps_id, h->frame_num,
2649
               s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
2650
               h->ref_count[0], h->ref_count[1],
2651
               s->qscale,
2652
               h->deblocking_filter, h->slice_alpha_c0_offset/2-26, h->slice_beta_offset/2-26,
2653
               h->use_weight,
2654
               h->use_weight==1 && h->use_weight_chroma ? "c" : "",
2655
               h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
2656
               );
2657
    }
2658

    
2659
    return 0;
2660
}
2661

    
2662
int ff_h264_get_slice_type(const H264Context *h)
2663
{
2664
    switch (h->slice_type) {
2665
    case FF_P_TYPE:  return 0;
2666
    case FF_B_TYPE:  return 1;
2667
    case FF_I_TYPE:  return 2;
2668
    case FF_SP_TYPE: return 3;
2669
    case FF_SI_TYPE: return 4;
2670
    default:         return -1;
2671
    }
2672
}
2673

    
2674
/**
2675
 *
2676
 * @return non zero if the loop filter can be skiped
2677
 */
2678
static int fill_filter_caches(H264Context *h, int mb_type){
2679
    MpegEncContext * const s = &h->s;
2680
    const int mb_xy= h->mb_xy;
2681
    int top_xy, left_xy[2];
2682
    int top_type, left_type[2];
2683

    
2684
    top_xy     = mb_xy  - (s->mb_stride << MB_FIELD);
2685

    
2686
    //FIXME deblocking could skip the intra and nnz parts.
2687

    
2688
    /* Wow, what a mess, why didn't they simplify the interlacing & intra
2689
     * stuff, I can't imagine that these complex rules are worth it. */
2690

    
2691
    left_xy[1] = left_xy[0] = mb_xy-1;
2692
    if(FRAME_MBAFF){
2693
        const int left_mb_field_flag     = IS_INTERLACED(s->current_picture.mb_type[mb_xy-1]);
2694
        const int curr_mb_field_flag     = IS_INTERLACED(mb_type);
2695
        if(s->mb_y&1){
2696
            if (left_mb_field_flag != curr_mb_field_flag) {
2697
                left_xy[0] -= s->mb_stride;
2698
            }
2699
        }else{
2700
            if(curr_mb_field_flag){
2701
                top_xy      += s->mb_stride & (((s->current_picture.mb_type[top_xy    ]>>7)&1)-1);
2702
            }
2703
            if (left_mb_field_flag != curr_mb_field_flag) {
2704
                left_xy[1] += s->mb_stride;
2705
            }
2706
        }
2707
    }
2708

    
2709
    h->top_mb_xy = top_xy;
2710
    h->left_mb_xy[0] = left_xy[0];
2711
    h->left_mb_xy[1] = left_xy[1];
2712
    {
2713
        //for sufficiently low qp, filtering wouldn't do anything
2714
        //this is a conservative estimate: could also check beta_offset and more accurate chroma_qp
2715
        int qp_thresh = h->qp_thresh; //FIXME strictly we should store qp_thresh for each mb of a slice
2716
        int qp = s->current_picture.qscale_table[mb_xy];
2717
        if(qp <= qp_thresh
2718
           && (left_xy[0]<0 || ((qp + s->current_picture.qscale_table[left_xy[0]] + 1)>>1) <= qp_thresh)
2719
           && (top_xy   < 0 || ((qp + s->current_picture.qscale_table[top_xy    ] + 1)>>1) <= qp_thresh)){
2720
            if(!FRAME_MBAFF)
2721
                return 1;
2722
            if(   (left_xy[0]< 0            || ((qp + s->current_picture.qscale_table[left_xy[1]             ] + 1)>>1) <= qp_thresh)
2723
               && (top_xy    < s->mb_stride || ((qp + s->current_picture.qscale_table[top_xy    -s->mb_stride] + 1)>>1) <= qp_thresh))
2724
                return 1;
2725
        }
2726
    }
2727

    
2728
    top_type     = s->current_picture.mb_type[top_xy]    ;
2729
    left_type[0] = s->current_picture.mb_type[left_xy[0]];
2730
    left_type[1] = s->current_picture.mb_type[left_xy[1]];
2731
    if(h->deblocking_filter == 2){
2732
        if(h->slice_table[top_xy     ] != h->slice_num) top_type= 0;
2733
        if(h->slice_table[left_xy[0] ] != h->slice_num) left_type[0]= left_type[1]= 0;
2734
    }else{
2735
        if(h->slice_table[top_xy     ] == 0xFFFF) top_type= 0;
2736
        if(h->slice_table[left_xy[0] ] == 0xFFFF) left_type[0]= left_type[1] =0;
2737
    }
2738
    h->top_type    = top_type    ;
2739
    h->left_type[0]= left_type[0];
2740
    h->left_type[1]= left_type[1];
2741

    
2742
    if(IS_INTRA(mb_type))
2743
        return 0;
2744

    
2745
    AV_COPY64(&h->non_zero_count_cache[0+8*1], &h->non_zero_count[mb_xy][ 0]);
2746
    AV_COPY64(&h->non_zero_count_cache[0+8*2], &h->non_zero_count[mb_xy][ 8]);
2747
    AV_COPY32(&h->non_zero_count_cache[0+8*5], &h->non_zero_count[mb_xy][16]);
2748
    AV_COPY32(&h->non_zero_count_cache[4+8*3], &h->non_zero_count[mb_xy][20]);
2749
    AV_COPY64(&h->non_zero_count_cache[0+8*4], &h->non_zero_count[mb_xy][24]);
2750

    
2751
    h->cbp= h->cbp_table[mb_xy];
2752

    
2753
    {
2754
        int list;
2755
        for(list=0; list<h->list_count; list++){
2756
            int8_t *ref;
2757
            int y, b_stride;
2758
            int16_t (*mv_dst)[2];
2759
            int16_t (*mv_src)[2];
2760

    
2761
            if(!USES_LIST(mb_type, list)){
2762
                fill_rectangle(  h->mv_cache[list][scan8[0]], 4, 4, 8, pack16to32(0,0), 4);
2763
                AV_WN32A(&h->ref_cache[list][scan8[ 0]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2764
                AV_WN32A(&h->ref_cache[list][scan8[ 2]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2765
                AV_WN32A(&h->ref_cache[list][scan8[ 8]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2766
                AV_WN32A(&h->ref_cache[list][scan8[10]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2767
                continue;
2768
            }
2769

    
2770
            ref = &s->current_picture.ref_index[list][4*mb_xy];
2771
            {
2772
                int (*ref2frm)[64] = h->ref2frm[ h->slice_num&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2773
                AV_WN32A(&h->ref_cache[list][scan8[ 0]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2774
                AV_WN32A(&h->ref_cache[list][scan8[ 2]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2775
                ref += 2;
2776
                AV_WN32A(&h->ref_cache[list][scan8[ 8]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2777
                AV_WN32A(&h->ref_cache[list][scan8[10]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2778
            }
2779

    
2780
            b_stride = h->b_stride;
2781
            mv_dst   = &h->mv_cache[list][scan8[0]];
2782
            mv_src   = &s->current_picture.motion_val[list][4*s->mb_x + 4*s->mb_y*b_stride];
2783
            for(y=0; y<4; y++){
2784
                AV_COPY128(mv_dst + 8*y, mv_src + y*b_stride);
2785
            }
2786

    
2787
        }
2788
    }
2789

    
2790

    
2791
/*
2792
0 . T T. T T T T
2793
1 L . .L . . . .
2794
2 L . .L . . . .
2795
3 . T TL . . . .
2796
4 L . .L . . . .
2797
5 L . .. . . . .
2798
*/
2799
//FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
2800
    if(top_type){
2801
        AV_COPY32(&h->non_zero_count_cache[4+8*0], &h->non_zero_count[top_xy][4+3*8]);
2802
    }
2803

    
2804
    if(left_type[0]){
2805
        h->non_zero_count_cache[3+8*1]= h->non_zero_count[left_xy[0]][7+0*8];
2806
        h->non_zero_count_cache[3+8*2]= h->non_zero_count[left_xy[0]][7+1*8];
2807
        h->non_zero_count_cache[3+8*3]= h->non_zero_count[left_xy[0]][7+2*8];
2808
        h->non_zero_count_cache[3+8*4]= h->non_zero_count[left_xy[0]][7+3*8];
2809
    }
2810

    
2811
    // CAVLC 8x8dct requires NNZ values for residual decoding that differ from what the loop filter needs
2812
    if(!CABAC && h->pps.transform_8x8_mode){
2813
        if(IS_8x8DCT(top_type)){
2814
            h->non_zero_count_cache[4+8*0]=
2815
            h->non_zero_count_cache[5+8*0]= h->cbp_table[top_xy] & 4;
2816
            h->non_zero_count_cache[6+8*0]=
2817
            h->non_zero_count_cache[7+8*0]= h->cbp_table[top_xy] & 8;
2818
        }
2819
        if(IS_8x8DCT(left_type[0])){
2820
            h->non_zero_count_cache[3+8*1]=
2821
            h->non_zero_count_cache[3+8*2]= h->cbp_table[left_xy[0]]&2; //FIXME check MBAFF
2822
        }
2823
        if(IS_8x8DCT(left_type[1])){
2824
            h->non_zero_count_cache[3+8*3]=
2825
            h->non_zero_count_cache[3+8*4]= h->cbp_table[left_xy[1]]&8; //FIXME check MBAFF
2826
        }
2827

    
2828
        if(IS_8x8DCT(mb_type)){
2829
            h->non_zero_count_cache[scan8[0   ]]= h->non_zero_count_cache[scan8[1   ]]=
2830
            h->non_zero_count_cache[scan8[2   ]]= h->non_zero_count_cache[scan8[3   ]]= h->cbp & 1;
2831

    
2832
            h->non_zero_count_cache[scan8[0+ 4]]= h->non_zero_count_cache[scan8[1+ 4]]=
2833
            h->non_zero_count_cache[scan8[2+ 4]]= h->non_zero_count_cache[scan8[3+ 4]]= h->cbp & 2;
2834

    
2835
            h->non_zero_count_cache[scan8[0+ 8]]= h->non_zero_count_cache[scan8[1+ 8]]=
2836
            h->non_zero_count_cache[scan8[2+ 8]]= h->non_zero_count_cache[scan8[3+ 8]]= h->cbp & 4;
2837

    
2838
            h->non_zero_count_cache[scan8[0+12]]= h->non_zero_count_cache[scan8[1+12]]=
2839
            h->non_zero_count_cache[scan8[2+12]]= h->non_zero_count_cache[scan8[3+12]]= h->cbp & 8;
2840
        }
2841
    }
2842

    
2843
    if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
2844
        int list;
2845
        for(list=0; list<h->list_count; list++){
2846
            if(USES_LIST(top_type, list)){
2847
                const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
2848
                const int b8_xy= 4*top_xy + 2;
2849
                int (*ref2frm)[64] = h->ref2frm[ h->slice_table[top_xy]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2850
                AV_COPY128(h->mv_cache[list][scan8[0] + 0 - 1*8], s->current_picture.motion_val[list][b_xy + 0]);
2851
                h->ref_cache[list][scan8[0] + 0 - 1*8]=
2852
                h->ref_cache[list][scan8[0] + 1 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 0]];
2853
                h->ref_cache[list][scan8[0] + 2 - 1*8]=
2854
                h->ref_cache[list][scan8[0] + 3 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 1]];
2855
            }else{
2856
                AV_ZERO128(h->mv_cache[list][scan8[0] + 0 - 1*8]);
2857
                AV_WN32A(&h->ref_cache[list][scan8[0] + 0 - 1*8], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2858
            }
2859

    
2860
            if(!IS_INTERLACED(mb_type^left_type[0])){
2861
                if(USES_LIST(left_type[0], list)){
2862
                    const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
2863
                    const int b8_xy= 4*left_xy[0] + 1;
2864
                    int (*ref2frm)[64] = h->ref2frm[ h->slice_table[left_xy[0]]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2865
                    AV_COPY32(h->mv_cache[list][scan8[0] - 1 + 0 ], s->current_picture.motion_val[list][b_xy + h->b_stride*0]);
2866
                    AV_COPY32(h->mv_cache[list][scan8[0] - 1 + 8 ], s->current_picture.motion_val[list][b_xy + h->b_stride*1]);
2867
                    AV_COPY32(h->mv_cache[list][scan8[0] - 1 +16 ], s->current_picture.motion_val[list][b_xy + h->b_stride*2]);
2868
                    AV_COPY32(h->mv_cache[list][scan8[0] - 1 +24 ], s->current_picture.motion_val[list][b_xy + h->b_stride*3]);
2869
                    h->ref_cache[list][scan8[0] - 1 + 0 ]=
2870
                    h->ref_cache[list][scan8[0] - 1 + 8 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 2*0]];
2871
                    h->ref_cache[list][scan8[0] - 1 +16 ]=
2872
                    h->ref_cache[list][scan8[0] - 1 +24 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 2*1]];
2873
                }else{
2874
                    AV_ZERO32(h->mv_cache [list][scan8[0] - 1 + 0 ]);
2875
                    AV_ZERO32(h->mv_cache [list][scan8[0] - 1 + 8 ]);
2876
                    AV_ZERO32(h->mv_cache [list][scan8[0] - 1 +16 ]);
2877
                    AV_ZERO32(h->mv_cache [list][scan8[0] - 1 +24 ]);
2878
                    h->ref_cache[list][scan8[0] - 1 + 0  ]=
2879
                    h->ref_cache[list][scan8[0] - 1 + 8  ]=
2880
                    h->ref_cache[list][scan8[0] - 1 + 16 ]=
2881
                    h->ref_cache[list][scan8[0] - 1 + 24 ]= LIST_NOT_USED;
2882
                }
2883
            }
2884
        }
2885
    }
2886

    
2887
    return 0;
2888
}
2889

    
2890
static void loop_filter(H264Context *h){
2891
    MpegEncContext * const s = &h->s;
2892
    uint8_t  *dest_y, *dest_cb, *dest_cr;
2893
    int linesize, uvlinesize, mb_x, mb_y;
2894
    const int end_mb_y= s->mb_y + FRAME_MBAFF;
2895
    const int old_slice_type= h->slice_type;
2896

    
2897
    if(h->deblocking_filter) {
2898
        for(mb_x= 0; mb_x<s->mb_width; mb_x++){
2899
            for(mb_y=end_mb_y - FRAME_MBAFF; mb_y<= end_mb_y; mb_y++){
2900
                int mb_xy, mb_type;
2901
                mb_xy = h->mb_xy = mb_x + mb_y*s->mb_stride;
2902
                h->slice_num= h->slice_table[mb_xy];
2903
                mb_type= s->current_picture.mb_type[mb_xy];
2904
                h->list_count= h->list_counts[mb_xy];
2905

    
2906
                if(FRAME_MBAFF)
2907
                    h->mb_mbaff = h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2908

    
2909
                s->mb_x= mb_x;
2910
                s->mb_y= mb_y;
2911
                dest_y  = s->current_picture.data[0] + (mb_x + mb_y * s->linesize  ) * 16;
2912
                dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
2913
                dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
2914
                    //FIXME simplify above
2915

    
2916
                if (MB_FIELD) {
2917
                    linesize   = h->mb_linesize   = s->linesize * 2;
2918
                    uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2919
                    if(mb_y&1){ //FIXME move out of this function?
2920
                        dest_y -= s->linesize*15;
2921
                        dest_cb-= s->uvlinesize*7;
2922
                        dest_cr-= s->uvlinesize*7;
2923
                    }
2924
                } else {
2925
                    linesize   = h->mb_linesize   = s->linesize;
2926
                    uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2927
                }
2928
                backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0);
2929
                if(fill_filter_caches(h, mb_type))
2930
                    continue;
2931
                h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2932
                h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2933

    
2934
                if (FRAME_MBAFF) {
2935
                    ff_h264_filter_mb     (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2936
                } else {
2937
                    ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2938
                }
2939
            }
2940
        }
2941
    }
2942
    h->slice_type= old_slice_type;
2943
    s->mb_x= 0;
2944
    s->mb_y= end_mb_y - FRAME_MBAFF;
2945
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2946
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2947
}
2948

    
2949
static void predict_field_decoding_flag(H264Context *h){
2950
    MpegEncContext * const s = &h->s;
2951
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2952
    int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
2953
                ? s->current_picture.mb_type[mb_xy-1]
2954
                : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
2955
                ? s->current_picture.mb_type[mb_xy-s->mb_stride]
2956
                : 0;
2957
    h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2958
}
2959

    
2960
/**
2961
 * Draw edges and report progress for the last MB row.
2962
 */
2963
static void decode_finish_row(H264Context *h){
2964
    MpegEncContext * const s = &h->s;
2965
    int top = 16*(s->mb_y >> FIELD_PICTURE);
2966
    int height = 16 << FRAME_MBAFF;
2967
    int deblock_border = (16 + 4) << FRAME_MBAFF;
2968
    int pic_height = 16*s->mb_height >> FIELD_PICTURE;
2969

    
2970
    if (h->deblocking_filter) {
2971
        if((top + height) >= pic_height)
2972
            height += deblock_border;
2973

    
2974
        top -= deblock_border;
2975
    }
2976

    
2977
    if (top >= pic_height || (top + height) < h->emu_edge_height)
2978
        return;
2979

    
2980
    height = FFMIN(height, pic_height - top);
2981
    if (top < h->emu_edge_height) {
2982
        height = top+height;
2983
        top = 0;
2984
    }
2985

    
2986
    ff_draw_horiz_band(s, top, height);
2987

    
2988
    if (s->dropable) return;
2989

    
2990
    ff_thread_report_progress((AVFrame*)s->current_picture_ptr, top + height - 1,
2991
                             s->picture_structure==PICT_BOTTOM_FIELD);
2992
}
2993

    
2994
static int decode_slice(struct AVCodecContext *avctx, void *arg){
2995
    H264Context *h = *(void**)arg;
2996
    MpegEncContext * const s = &h->s;
2997
    const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
2998

    
2999
    s->mb_skip_run= -1;
3000

    
3001
    h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
3002
                    (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
3003

    
3004
    if( h->pps.cabac ) {
3005
        /* realign */
3006
        align_get_bits( &s->gb );
3007

    
3008
        /* init cabac */
3009
        ff_init_cabac_states( &h->cabac);
3010
        ff_init_cabac_decoder( &h->cabac,
3011
                               s->gb.buffer + get_bits_count(&s->gb)/8,
3012
                               (get_bits_left(&s->gb) + 7)/8);
3013

    
3014
        ff_h264_init_cabac_states(h);
3015

    
3016
        for(;;){
3017
//START_TIMER
3018
            int ret = ff_h264_decode_mb_cabac(h);
3019
            int eos;
3020
//STOP_TIMER("decode_mb_cabac")
3021

    
3022
            if(ret>=0) ff_h264_hl_decode_mb(h);
3023

    
3024
            if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
3025
                s->mb_y++;
3026

    
3027
                ret = ff_h264_decode_mb_cabac(h);
3028

    
3029
                if(ret>=0) ff_h264_hl_decode_mb(h);
3030
                s->mb_y--;
3031
            }
3032
            eos = get_cabac_terminate( &h->cabac );
3033

    
3034
            if((s->workaround_bugs & FF_BUG_TRUNCATED) && h->cabac.bytestream > h->cabac.bytestream_end + 2){
3035
                ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
3036
                return 0;
3037
            }
3038
            if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
3039
                av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d, bytestream (%td)\n", s->mb_x, s->mb_y, h->cabac.bytestream_end - h->cabac.bytestream);
3040
                ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
3041
                return -1;
3042
            }
3043

    
3044
            if( ++s->mb_x >= s->mb_width ) {
3045
                s->mb_x = 0;
3046
                loop_filter(h);
3047
                decode_finish_row(h);
3048
                ++s->mb_y;
3049
                if(FIELD_OR_MBAFF_PICTURE) {
3050
                    ++s->mb_y;
3051
                    if(FRAME_MBAFF && s->mb_y < s->mb_height)
3052
                        predict_field_decoding_flag(h);
3053
                }
3054
            }
3055

    
3056
            if( eos || s->mb_y >= s->mb_height ) {
3057
                tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
3058
                ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
3059
                return 0;
3060
            }
3061
        }
3062

    
3063
    } else {
3064
        for(;;){
3065
            int ret = ff_h264_decode_mb_cavlc(h);
3066

    
3067
            if(ret>=0) ff_h264_hl_decode_mb(h);
3068

    
3069
            if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
3070
                s->mb_y++;
3071
                ret = ff_h264_decode_mb_cavlc(h);
3072

    
3073
                if(ret>=0) ff_h264_hl_decode_mb(h);
3074
                s->mb_y--;
3075
            }
3076

    
3077
            if(ret<0){
3078
                av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
3079
                ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
3080

    
3081
                return -1;
3082
            }
3083

    
3084
            if(++s->mb_x >= s->mb_width){
3085
                s->mb_x=0;
3086
                loop_filter(h);
3087
                decode_finish_row(h);
3088
                ++s->mb_y;
3089
                if(FIELD_OR_MBAFF_PICTURE) {
3090
                    ++s->mb_y;
3091
                    if(FRAME_MBAFF && s->mb_y < s->mb_height)
3092
                        predict_field_decoding_flag(h);
3093
                }
3094
                if(s->mb_y >= s->mb_height){
3095
                    tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
3096

    
3097
                    if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
3098
                        ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
3099

    
3100
                        return 0;
3101
                    }else{
3102
                        ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
3103

    
3104
                        return -1;
3105
                    }
3106
                }
3107
            }
3108

    
3109
            if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
3110
                tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
3111
                if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
3112
                    ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
3113

    
3114
                    return 0;
3115
                }else{
3116
                    ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
3117

    
3118
                    return -1;
3119
                }
3120
            }
3121
        }
3122
    }
3123

    
3124
#if 0
3125
    for(;s->mb_y < s->mb_height; s->mb_y++){
3126
        for(;s->mb_x < s->mb_width; s->mb_x++){
3127
            int ret= decode_mb(h);
3128

3129
            ff_h264_hl_decode_mb(h);
3130

3131
            if(ret<0){
3132
                av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
3133
                ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
3134

3135
                return -1;
3136
            }
3137

3138
            if(++s->mb_x >= s->mb_width){
3139
                s->mb_x=0;
3140
                if(++s->mb_y >= s->mb_height){
3141
                    if(get_bits_count(s->gb) == s->gb.size_in_bits){
3142
                        ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
3143

3144
                        return 0;
3145
                    }else{
3146
                        ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
3147

3148
                        return -1;
3149
                    }
3150
                }
3151
            }
3152

3153
            if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
3154
                if(get_bits_count(s->gb) == s->gb.size_in_bits){
3155
                    ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
3156

3157
                    return 0;
3158
                }else{
3159
                    ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
3160

3161
                    return -1;
3162
                }
3163
            }
3164
        }
3165
        s->mb_x=0;
3166
        ff_draw_horiz_band(s, 16*s->mb_y, 16);
3167
    }
3168
#endif
3169
    return -1; //not reached
3170
}
3171

    
3172
/**
3173
 * Call decode_slice() for each context.
3174
 *
3175
 * @param h h264 master context
3176
 * @param context_count number of contexts to execute
3177
 */
3178
static void execute_decode_slices(H264Context *h, int context_count){
3179
    MpegEncContext * const s = &h->s;
3180
    AVCodecContext * const avctx= s->avctx;
3181
    H264Context *hx;
3182
    int i;
3183

    
3184
    if (s->avctx->hwaccel)
3185
        return;
3186
    if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
3187
        return;
3188
    if(context_count == 1) {
3189
        decode_slice(avctx, &h);
3190
    } else {
3191
        for(i = 1; i < context_count; i++) {
3192
            hx = h->thread_context[i];
3193
            hx->s.error_recognition = avctx->error_recognition;
3194
            hx->s.error_count = 0;
3195
        }
3196

    
3197
        avctx->execute(avctx, (void *)decode_slice,
3198
                       h->thread_context, NULL, context_count, sizeof(void*));
3199

    
3200
        /* pull back stuff from slices to master context */
3201
        hx = h->thread_context[context_count - 1];
3202
        s->mb_x = hx->s.mb_x;
3203
        s->mb_y = hx->s.mb_y;
3204
        s->dropable = hx->s.dropable;
3205
        s->picture_structure = hx->s.picture_structure;
3206
        for(i = 1; i < context_count; i++)
3207
            h->s.error_count += h->thread_context[i]->s.error_count;
3208
    }
3209
}
3210

    
3211

    
3212
static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
3213
    MpegEncContext * const s = &h->s;
3214
    AVCodecContext * const avctx= s->avctx;
3215
    int buf_index=0;
3216
    H264Context *hx; ///< thread context
3217
    int context_count = 0;
3218
    int next_avc= h->is_avc ? 0 : buf_size;
3219

    
3220
    h->max_contexts = (HAVE_THREADS && (s->avctx->active_thread_type&FF_THREAD_SLICE)) ? avctx->thread_count : 1;
3221
#if 0
3222
    int i;
3223
    for(i=0; i<50; i++){
3224
        av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]);
3225
    }
3226
#endif
3227
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
3228
        h->current_slice = 0;
3229
        if (!s->first_field)
3230
            s->current_picture_ptr= NULL;
3231
        ff_h264_reset_sei(h);
3232
    }
3233

    
3234
    for(;;){
3235
        int consumed;
3236
        int dst_length;
3237
        int bit_length;
3238
        const uint8_t *ptr;
3239
        int i, nalsize = 0;
3240
        int err;
3241

    
3242
        if(buf_index >= next_avc) {
3243
            if(buf_index >= buf_size) break;
3244
            nalsize = 0;
3245
            for(i = 0; i < h->nal_length_size; i++)
3246
                nalsize = (nalsize << 8) | buf[buf_index++];
3247
            if(nalsize <= 0 || nalsize > buf_size - buf_index){
3248
                av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
3249
                break;
3250
            }
3251
            next_avc= buf_index + nalsize;
3252
        } else {
3253
            // start code prefix search
3254
            for(; buf_index + 3 < next_avc; buf_index++){
3255
                // This should always succeed in the first iteration.
3256
                if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
3257
                    break;
3258
            }
3259

    
3260
            if(buf_index+3 >= buf_size) break;
3261

    
3262
            buf_index+=3;
3263
            if(buf_index >= next_avc) continue;
3264
        }
3265

    
3266
        hx = h->thread_context[context_count];
3267

    
3268
        ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, next_avc - buf_index);
3269
        if (ptr==NULL || dst_length < 0){
3270
            return -1;
3271
        }
3272
        i= buf_index + consumed;
3273
        if((s->workaround_bugs & FF_BUG_AUTODETECT) && i+3<next_avc &&
3274
           buf[i]==0x00 && buf[i+1]==0x00 && buf[i+2]==0x01 && buf[i+3]==0xE0)
3275
            s->workaround_bugs |= FF_BUG_TRUNCATED;
3276

    
3277
        if(!(s->workaround_bugs & FF_BUG_TRUNCATED)){
3278
        while(ptr[dst_length - 1] == 0 && dst_length > 0)
3279
            dst_length--;
3280
        }
3281
        bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
3282

    
3283
        if(s->avctx->debug&FF_DEBUG_STARTCODE){
3284
            av_log(h->s.avctx, AV_LOG_DEBUG, "NAL %d at %d/%d length %d\n", hx->nal_unit_type, buf_index, buf_size, dst_length);
3285
        }
3286

    
3287
        if (h->is_avc && (nalsize != consumed) && nalsize){
3288
            av_log(h->s.avctx, AV_LOG_DEBUG, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize);
3289
        }
3290

    
3291
        buf_index += consumed;
3292

    
3293
        if(  (s->hurry_up == 1 && h->nal_ref_idc  == 0) //FIXME do not discard SEI id
3294
           ||(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc  == 0))
3295
            continue;
3296

    
3297
      again:
3298
        err = 0;
3299
        switch(hx->nal_unit_type){
3300
        case NAL_IDR_SLICE:
3301
            if (h->nal_unit_type != NAL_IDR_SLICE) {
3302
                av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
3303
                return -1;
3304
            }
3305
            idr(h); //FIXME ensure we don't loose some frames if there is reordering
3306
        case NAL_SLICE:
3307
            init_get_bits(&hx->s.gb, ptr, bit_length);
3308
            hx->intra_gb_ptr=
3309
            hx->inter_gb_ptr= &hx->s.gb;
3310
            hx->s.data_partitioning = 0;
3311

    
3312
            if((err = decode_slice_header(hx, h)))
3313
               break;
3314

    
3315
            s->current_picture_ptr->key_frame |=
3316
                    (hx->nal_unit_type == NAL_IDR_SLICE) ||
3317
                    (h->sei_recovery_frame_cnt >= 0);
3318

    
3319
            if (h->current_slice == 1) {
3320
                if(!(s->flags2 & CODEC_FLAG2_CHUNKS)) {
3321
                    decode_postinit(h);
3322
                }
3323

    
3324
                if (s->avctx->hwaccel && s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
3325
                    return -1;
3326
                if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
3327
                    ff_vdpau_h264_picture_start(s);
3328
            }
3329

    
3330
            if(hx->redundant_pic_count==0 && hx->s.hurry_up < 5
3331
               && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
3332
               && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
3333
               && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
3334
               && avctx->skip_frame < AVDISCARD_ALL){
3335
                if(avctx->hwaccel) {
3336
                    if (avctx->hwaccel->decode_slice(avctx, &buf[buf_index - consumed], consumed) < 0)
3337
                        return -1;
3338
                }else
3339
                if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
3340
                    static const uint8_t start_code[] = {0x00, 0x00, 0x01};
3341
                    ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code));
3342
                    ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed );
3343
                }else
3344
                    context_count++;
3345
            }
3346
            break;
3347
        case NAL_DPA:
3348
            init_get_bits(&hx->s.gb, ptr, bit_length);
3349
            hx->intra_gb_ptr=
3350
            hx->inter_gb_ptr= NULL;
3351

    
3352
            if ((err = decode_slice_header(hx, h)) < 0)
3353
                break;
3354

    
3355
            hx->s.data_partitioning = 1;
3356

    
3357
            break;
3358
        case NAL_DPB:
3359
            init_get_bits(&hx->intra_gb, ptr, bit_length);
3360
            hx->intra_gb_ptr= &hx->intra_gb;
3361
            break;
3362
        case NAL_DPC:
3363
            init_get_bits(&hx->inter_gb, ptr, bit_length);
3364
            hx->inter_gb_ptr= &hx->inter_gb;
3365

    
3366
            if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
3367
               && s->context_initialized
3368
               && s->hurry_up < 5
3369
               && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
3370
               && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
3371
               && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
3372
               && avctx->skip_frame < AVDISCARD_ALL)
3373
                context_count++;
3374
            break;
3375
        case NAL_SEI:
3376
            init_get_bits(&s->gb, ptr, bit_length);
3377
            ff_h264_decode_sei(h);
3378
            break;
3379
        case NAL_SPS:
3380
            init_get_bits(&s->gb, ptr, bit_length);
3381
            ff_h264_decode_seq_parameter_set(h);
3382

    
3383
            if(s->flags& CODEC_FLAG_LOW_DELAY)
3384
                s->low_delay=1;
3385

    
3386
            if(avctx->has_b_frames < 2)
3387
                avctx->has_b_frames= !s->low_delay;
3388
            break;
3389
        case NAL_PPS:
3390
            init_get_bits(&s->gb, ptr, bit_length);
3391

    
3392
            ff_h264_decode_picture_parameter_set(h, bit_length);
3393

    
3394
            break;
3395
        case NAL_AUD:
3396
        case NAL_END_SEQUENCE:
3397
        case NAL_END_STREAM:
3398
        case NAL_FILLER_DATA:
3399
        case NAL_SPS_EXT:
3400
        case NAL_AUXILIARY_SLICE:
3401
            break;
3402
        default:
3403
            av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", hx->nal_unit_type, bit_length);
3404
        }
3405

    
3406
        if(context_count == h->max_contexts) {
3407
            execute_decode_slices(h, context_count);
3408
            context_count = 0;
3409
        }
3410

    
3411
        if (err < 0)
3412
            av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
3413
        else if(err == 1) {
3414
            /* Slice could not be decoded in parallel mode, copy down
3415
             * NAL unit stuff to context 0 and restart. Note that
3416
             * rbsp_buffer is not transferred, but since we no longer
3417
             * run in parallel mode this should not be an issue. */
3418
            h->nal_unit_type = hx->nal_unit_type;
3419
            h->nal_ref_idc   = hx->nal_ref_idc;
3420
            hx = h;
3421
            goto again;
3422
        }
3423
    }
3424
    if(context_count)
3425
        execute_decode_slices(h, context_count);
3426
    return buf_index;
3427
}
3428

    
3429
/**
3430
 * returns the number of bytes consumed for building the current frame
3431
 */
3432
static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
3433
        if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
3434
        if(pos+10>buf_size) pos=buf_size; // oops ;)
3435

    
3436
        return pos;
3437
}
3438

    
3439
static int decode_frame(AVCodecContext *avctx,
3440
                             void *data, int *data_size,
3441
                             AVPacket *avpkt)
3442
{
3443
    const uint8_t *buf = avpkt->data;
3444
    int buf_size = avpkt->size;
3445
    H264Context *h = avctx->priv_data;
3446
    MpegEncContext *s = &h->s;
3447
    AVFrame *pict = data;
3448
    int buf_index;
3449

    
3450
    s->flags= avctx->flags;
3451
    s->flags2= avctx->flags2;
3452

    
3453
   /* end of stream, output what is still in the buffers */
3454
 out:
3455
    if (buf_size == 0) {
3456
        Picture *out;
3457
        int i, out_idx;
3458

    
3459
        s->current_picture_ptr = NULL;
3460

    
3461
//FIXME factorize this with the output code below
3462
        out = h->delayed_pic[0];
3463
        out_idx = 0;
3464
        for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
3465
            if(h->delayed_pic[i]->poc < out->poc){
3466
                out = h->delayed_pic[i];
3467
                out_idx = i;
3468
            }
3469

    
3470
        for(i=out_idx; h->delayed_pic[i]; i++)
3471
            h->delayed_pic[i] = h->delayed_pic[i+1];
3472

    
3473
        if(out){
3474
            *data_size = sizeof(AVFrame);
3475
            *pict= *(AVFrame*)out;
3476
        }
3477

    
3478
        return 0;
3479
    }
3480

    
3481
    buf_index=decode_nal_units(h, buf, buf_size);
3482
    if(buf_index < 0)
3483
        return -1;
3484

    
3485
    if (!s->current_picture_ptr && h->nal_unit_type == NAL_END_SEQUENCE) {
3486
        buf_size = 0;
3487
        goto out;
3488
    }
3489

    
3490
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
3491
        if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0;
3492
        av_log(avctx, AV_LOG_ERROR, "no frame!\n");
3493
        return -1;
3494
    }
3495

    
3496
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){
3497

    
3498
        if(s->flags2 & CODEC_FLAG2_CHUNKS) decode_postinit(h);
3499

    
3500
        field_end(h, 0);
3501

    
3502
        if (!h->next_output_pic) {
3503
            /* Wait for second field. */
3504
            *data_size = 0;
3505

    
3506
        } else {
3507
            *data_size = sizeof(AVFrame);
3508
            *pict = *(AVFrame*)h->next_output_pic;
3509
        }
3510
    }
3511

    
3512
    assert(pict->data[0] || !*data_size);
3513
    ff_print_debug_info(s, pict);
3514
//printf("out %d\n", (int)pict->data[0]);
3515

    
3516
    return get_consumed_bytes(s, buf_index, buf_size);
3517
}
3518
#if 0
3519
static inline void fill_mb_avail(H264Context *h){
3520
    MpegEncContext * const s = &h->s;
3521
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
3522

3523
    if(s->mb_y){
3524
        h->mb_avail[0]= s->mb_x                 && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num;
3525
        h->mb_avail[1]=                            h->slice_table[mb_xy - s->mb_stride    ] == h->slice_num;
3526
        h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num;
3527
    }else{
3528
        h->mb_avail[0]=
3529
        h->mb_avail[1]=
3530
        h->mb_avail[2]= 0;
3531
    }
3532
    h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num;
3533
    h->mb_avail[4]= 1; //FIXME move out
3534
    h->mb_avail[5]= 0; //FIXME move out
3535
}
3536
#endif
3537

    
3538
#ifdef TEST
3539
#undef printf
3540
#undef random
3541
#define COUNT 8000
3542
#define SIZE (COUNT*40)
3543
int main(void){
3544
    int i;
3545
    uint8_t temp[SIZE];
3546
    PutBitContext pb;
3547
    GetBitContext gb;
3548
//    int int_temp[10000];
3549
    DSPContext dsp;
3550
    AVCodecContext avctx;
3551

    
3552
    dsputil_init(&dsp, &avctx);
3553

    
3554
    init_put_bits(&pb, temp, SIZE);
3555
    printf("testing unsigned exp golomb\n");
3556
    for(i=0; i<COUNT; i++){
3557
        START_TIMER
3558
        set_ue_golomb(&pb, i);
3559
        STOP_TIMER("set_ue_golomb");
3560
    }
3561
    flush_put_bits(&pb);
3562

    
3563
    init_get_bits(&gb, temp, 8*SIZE);
3564
    for(i=0; i<COUNT; i++){
3565
        int j, s;
3566

    
3567
        s= show_bits(&gb, 24);
3568

    
3569
        START_TIMER
3570
        j= get_ue_golomb(&gb);
3571
        if(j != i){
3572
            printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
3573
//            return -1;
3574
        }
3575
        STOP_TIMER("get_ue_golomb");
3576
    }
3577

    
3578

    
3579
    init_put_bits(&pb, temp, SIZE);
3580
    printf("testing signed exp golomb\n");
3581
    for(i=0; i<COUNT; i++){
3582
        START_TIMER
3583
        set_se_golomb(&pb, i - COUNT/2);
3584
        STOP_TIMER("set_se_golomb");
3585
    }
3586
    flush_put_bits(&pb);
3587

    
3588
    init_get_bits(&gb, temp, 8*SIZE);
3589
    for(i=0; i<COUNT; i++){
3590
        int j, s;
3591

    
3592
        s= show_bits(&gb, 24);
3593

    
3594
        START_TIMER
3595
        j= get_se_golomb(&gb);
3596
        if(j != i - COUNT/2){
3597
            printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
3598
//            return -1;
3599
        }
3600
        STOP_TIMER("get_se_golomb");
3601
    }
3602

    
3603
#if 0
3604
    printf("testing 4x4 (I)DCT\n");
3605

3606
    DCTELEM block[16];
3607
    uint8_t src[16], ref[16];
3608
    uint64_t error= 0, max_error=0;
3609

3610
    for(i=0; i<COUNT; i++){
3611
        int j;
3612
//        printf("%d %d %d\n", r1, r2, (r2-r1)*16);
3613
        for(j=0; j<16; j++){
3614
            ref[j]= random()%255;
3615
            src[j]= random()%255;
3616
        }
3617

3618
        h264_diff_dct_c(block, src, ref, 4);
3619

3620
        //normalize
3621
        for(j=0; j<16; j++){
3622
//            printf("%d ", block[j]);
3623
            block[j]= block[j]*4;
3624
            if(j&1) block[j]= (block[j]*4 + 2)/5;
3625
            if(j&4) block[j]= (block[j]*4 + 2)/5;
3626
        }
3627
//        printf("\n");
3628

3629
        h->h264dsp.h264_idct_add(ref, block, 4);
3630
/*        for(j=0; j<16; j++){
3631
            printf("%d ", ref[j]);
3632
        }
3633
        printf("\n");*/
3634

3635
        for(j=0; j<16; j++){
3636
            int diff= FFABS(src[j] - ref[j]);
3637

3638
            error+= diff*diff;
3639
            max_error= FFMAX(max_error, diff);
3640
        }
3641
    }
3642
    printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
3643
    printf("testing quantizer\n");
3644
    for(qp=0; qp<52; qp++){
3645
        for(i=0; i<16; i++)
3646
            src1_block[i]= src2_block[i]= random()%255;
3647

3648
    }
3649
    printf("Testing NAL layer\n");
3650

3651
    uint8_t bitstream[COUNT];
3652
    uint8_t nal[COUNT*2];
3653
    H264Context h;
3654
    memset(&h, 0, sizeof(H264Context));
3655

3656
    for(i=0; i<COUNT; i++){
3657
        int zeros= i;
3658
        int nal_length;
3659
        int consumed;
3660
        int out_length;
3661
        uint8_t *out;
3662
        int j;
3663

3664
        for(j=0; j<COUNT; j++){
3665
            bitstream[j]= (random() % 255) + 1;
3666
        }
3667

3668
        for(j=0; j<zeros; j++){
3669
            int pos= random() % COUNT;
3670
            while(bitstream[pos] == 0){
3671
                pos++;
3672
                pos %= COUNT;
3673
            }
3674
            bitstream[pos]=0;
3675
        }
3676

3677
        START_TIMER
3678

3679
        nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
3680
        if(nal_length<0){
3681
            printf("encoding failed\n");
3682
            return -1;
3683
        }
3684

3685
        out= ff_h264_decode_nal(&h, nal, &out_length, &consumed, nal_length);
3686

3687
        STOP_TIMER("NAL")
3688

3689
        if(out_length != COUNT){
3690
            printf("incorrect length %d %d\n", out_length, COUNT);
3691
            return -1;
3692
        }
3693

3694
        if(consumed != nal_length){
3695
            printf("incorrect consumed length %d %d\n", nal_length, consumed);
3696
            return -1;
3697
        }
3698

3699
        if(memcmp(bitstream, out, COUNT)){
3700
            printf("mismatch\n");
3701
            return -1;
3702
        }
3703
    }
3704
#endif
3705

    
3706
    printf("Testing RBSP\n");
3707

    
3708

    
3709
    return 0;
3710
}
3711
#endif /* TEST */
3712

    
3713

    
3714
av_cold void ff_h264_free_context(H264Context *h)
3715
{
3716
    int i;
3717

    
3718
    free_tables(h, 1); //FIXME cleanup init stuff perhaps
3719

    
3720
    for(i = 0; i < MAX_SPS_COUNT; i++)
3721
        av_freep(h->sps_buffers + i);
3722

    
3723
    for(i = 0; i < MAX_PPS_COUNT; i++)
3724
        av_freep(h->pps_buffers + i);
3725
}
3726

    
3727
av_cold int ff_h264_decode_end(AVCodecContext *avctx)
3728
{
3729
    H264Context *h = avctx->priv_data;
3730
    MpegEncContext *s = &h->s;
3731

    
3732
    ff_h264_free_context(h);
3733

    
3734
    MPV_common_end(s);
3735

    
3736
//    memset(h, 0, sizeof(H264Context));
3737

    
3738
    return 0;
3739
}
3740

    
3741
static const AVProfile profiles[] = {
3742
    { FF_PROFILE_H264_BASELINE,             "Baseline"              },
3743
    { FF_PROFILE_H264_CONSTRAINED_BASELINE, "Constrained Baseline"  },
3744
    { FF_PROFILE_H264_MAIN,                 "Main"                  },
3745
    { FF_PROFILE_H264_EXTENDED,             "Extended"              },
3746
    { FF_PROFILE_H264_HIGH,                 "High"                  },
3747
    { FF_PROFILE_H264_HIGH_10,              "High 10"               },
3748
    { FF_PROFILE_H264_HIGH_10_INTRA,        "High 10 Intra"         },
3749
    { FF_PROFILE_H264_HIGH_422,             "High 4:2:2"            },
3750
    { FF_PROFILE_H264_HIGH_422_INTRA,       "High 4:2:2 Intra"      },
3751
    { FF_PROFILE_H264_HIGH_444,             "High 4:4:4"            },
3752
    { FF_PROFILE_H264_HIGH_444_PREDICTIVE,  "High 4:4:4 Predictive" },
3753
    { FF_PROFILE_H264_HIGH_444_INTRA,       "High 4:4:4 Intra"      },
3754
    { FF_PROFILE_H264_CAVLC_444,            "CAVLC 4:4:4"           },
3755
    { FF_PROFILE_UNKNOWN },
3756
};
3757

    
3758
AVCodec ff_h264_decoder = {
3759
    "h264",
3760
    AVMEDIA_TYPE_VIDEO,
3761
    CODEC_ID_H264,
3762
    sizeof(H264Context),
3763
    ff_h264_decode_init,
3764
    NULL,
3765
    ff_h264_decode_end,
3766
    decode_frame,
3767
    /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_FRAME_THREADS,
3768
    .flush= flush_dpb,
3769
    .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
3770
    .init_thread_copy      = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
3771
    .update_thread_context = ONLY_IF_THREADS_ENABLED(decode_update_thread_context),
3772
    .profiles = NULL_IF_CONFIG_SMALL(profiles),
3773
};
3774

    
3775
#if CONFIG_H264_VDPAU_DECODER
3776
AVCodec ff_h264_vdpau_decoder = {
3777
    "h264_vdpau",
3778
    AVMEDIA_TYPE_VIDEO,
3779
    CODEC_ID_H264,
3780
    sizeof(H264Context),
3781
    ff_h264_decode_init,
3782
    NULL,
3783
    ff_h264_decode_end,
3784
    decode_frame,
3785
    CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
3786
    .flush= flush_dpb,
3787
    .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
3788
    .pix_fmts = (const enum PixelFormat[]){PIX_FMT_VDPAU_H264, PIX_FMT_NONE},
3789
    .profiles = NULL_IF_CONFIG_SMALL(profiles),
3790
};
3791
#endif