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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.
16
 *
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
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 */
21

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

    
28
#include "libavcore/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 "h264_parser.h"
37
#include "golomb.h"
38
#include "mathops.h"
39
#include "rectangle.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
int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
237
    int v= *src;
238
    int r;
239

    
240
    tprintf(h->s.avctx, "rbsp trailing %X\n", v);
241

    
242
    for(r=1; r<9; r++){
243
        if(v&1) return r;
244
        v>>=1;
245
    }
246
    return 0;
247
}
248

    
249
#if 0
250
/**
251
 * DCT transforms the 16 dc values.
252
 * @param qp quantization parameter ??? FIXME
253
 */
254
static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
255
//    const int qmul= dequant_coeff[qp][0];
256
    int i;
257
    int temp[16]; //FIXME check if this is a good idea
258
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
259
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
260

261
    for(i=0; i<4; i++){
262
        const int offset= y_offset[i];
263
        const int z0= block[offset+stride*0] + block[offset+stride*4];
264
        const int z1= block[offset+stride*0] - block[offset+stride*4];
265
        const int z2= block[offset+stride*1] - block[offset+stride*5];
266
        const int z3= block[offset+stride*1] + block[offset+stride*5];
267

268
        temp[4*i+0]= z0+z3;
269
        temp[4*i+1]= z1+z2;
270
        temp[4*i+2]= z1-z2;
271
        temp[4*i+3]= z0-z3;
272
    }
273

274
    for(i=0; i<4; i++){
275
        const int offset= x_offset[i];
276
        const int z0= temp[4*0+i] + temp[4*2+i];
277
        const int z1= temp[4*0+i] - temp[4*2+i];
278
        const int z2= temp[4*1+i] - temp[4*3+i];
279
        const int z3= temp[4*1+i] + temp[4*3+i];
280

281
        block[stride*0 +offset]= (z0 + z3)>>1;
282
        block[stride*2 +offset]= (z1 + z2)>>1;
283
        block[stride*8 +offset]= (z1 - z2)>>1;
284
        block[stride*10+offset]= (z0 - z3)>>1;
285
    }
286
}
287
#endif
288

    
289
#undef xStride
290
#undef stride
291

    
292
static void chroma_dc_dequant_idct_c(DCTELEM *block, int qmul){
293
    const int stride= 16*2;
294
    const int xStride= 16;
295
    int a,b,c,d,e;
296

    
297
    a= block[stride*0 + xStride*0];
298
    b= block[stride*0 + xStride*1];
299
    c= block[stride*1 + xStride*0];
300
    d= block[stride*1 + xStride*1];
301

    
302
    e= a-b;
303
    a= a+b;
304
    b= c-d;
305
    c= c+d;
306

    
307
    block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
308
    block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
309
    block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
310
    block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
311
}
312

    
313
#if 0
314
static void chroma_dc_dct_c(DCTELEM *block){
315
    const int stride= 16*2;
316
    const int xStride= 16;
317
    int a,b,c,d,e;
318

319
    a= block[stride*0 + xStride*0];
320
    b= block[stride*0 + xStride*1];
321
    c= block[stride*1 + xStride*0];
322
    d= block[stride*1 + xStride*1];
323

324
    e= a-b;
325
    a= a+b;
326
    b= c-d;
327
    c= c+d;
328

329
    block[stride*0 + xStride*0]= (a+c);
330
    block[stride*0 + xStride*1]= (e+b);
331
    block[stride*1 + xStride*0]= (a-c);
332
    block[stride*1 + xStride*1]= (e-b);
333
}
334
#endif
335

    
336
static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
337
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
338
                           int src_x_offset, int src_y_offset,
339
                           qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
340
    MpegEncContext * const s = &h->s;
341
    const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
342
    int my=       h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
343
    const int luma_xy= (mx&3) + ((my&3)<<2);
344
    uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
345
    uint8_t * src_cb, * src_cr;
346
    int extra_width= h->emu_edge_width;
347
    int extra_height= h->emu_edge_height;
348
    int emu=0;
349
    const int full_mx= mx>>2;
350
    const int full_my= my>>2;
351
    const int pic_width  = 16*s->mb_width;
352
    const int pic_height = 16*s->mb_height >> MB_FIELD;
353

    
354
    if(mx&7) extra_width -= 3;
355
    if(my&7) extra_height -= 3;
356

    
357
    if(   full_mx < 0-extra_width
358
       || full_my < 0-extra_height
359
       || full_mx + 16/*FIXME*/ > pic_width + extra_width
360
       || full_my + 16/*FIXME*/ > pic_height + extra_height){
361
        ff_emulated_edge_mc(s->edge_emu_buffer, src_y - 2 - 2*h->mb_linesize, h->mb_linesize, 16+5, 16+5/*FIXME*/, full_mx-2, full_my-2, pic_width, pic_height);
362
            src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
363
        emu=1;
364
    }
365

    
366
    qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
367
    if(!square){
368
        qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
369
    }
370

    
371
    if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
372

    
373
    if(MB_FIELD){
374
        // chroma offset when predicting from a field of opposite parity
375
        my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
376
        emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
377
    }
378
    src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
379
    src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
380

    
381
    if(emu){
382
        ff_emulated_edge_mc(s->edge_emu_buffer, src_cb, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
383
            src_cb= s->edge_emu_buffer;
384
    }
385
    chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
386

    
387
    if(emu){
388
        ff_emulated_edge_mc(s->edge_emu_buffer, src_cr, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
389
            src_cr= s->edge_emu_buffer;
390
    }
391
    chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
392
}
393

    
394
static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
395
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
396
                           int x_offset, int y_offset,
397
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
398
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
399
                           int list0, int list1){
400
    MpegEncContext * const s = &h->s;
401
    qpel_mc_func *qpix_op=  qpix_put;
402
    h264_chroma_mc_func chroma_op= chroma_put;
403

    
404
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
405
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
406
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
407
    x_offset += 8*s->mb_x;
408
    y_offset += 8*(s->mb_y >> MB_FIELD);
409

    
410
    if(list0){
411
        Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
412
        mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
413
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
414
                           qpix_op, chroma_op);
415

    
416
        qpix_op=  qpix_avg;
417
        chroma_op= chroma_avg;
418
    }
419

    
420
    if(list1){
421
        Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
422
        mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
423
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
424
                           qpix_op, chroma_op);
425
    }
426
}
427

    
428
static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
429
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
430
                           int x_offset, int y_offset,
431
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
432
                           h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
433
                           h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
434
                           int list0, int list1){
435
    MpegEncContext * const s = &h->s;
436

    
437
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
438
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
439
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
440
    x_offset += 8*s->mb_x;
441
    y_offset += 8*(s->mb_y >> MB_FIELD);
442

    
443
    if(list0 && list1){
444
        /* don't optimize for luma-only case, since B-frames usually
445
         * use implicit weights => chroma too. */
446
        uint8_t *tmp_cb = s->obmc_scratchpad;
447
        uint8_t *tmp_cr = s->obmc_scratchpad + 8;
448
        uint8_t *tmp_y  = s->obmc_scratchpad + 8*h->mb_uvlinesize;
449
        int refn0 = h->ref_cache[0][ scan8[n] ];
450
        int refn1 = h->ref_cache[1][ scan8[n] ];
451

    
452
        mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
453
                    dest_y, dest_cb, dest_cr,
454
                    x_offset, y_offset, qpix_put, chroma_put);
455
        mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
456
                    tmp_y, tmp_cb, tmp_cr,
457
                    x_offset, y_offset, qpix_put, chroma_put);
458

    
459
        if(h->use_weight == 2){
460
            int weight0 = h->implicit_weight[refn0][refn1][s->mb_y&1];
461
            int weight1 = 64 - weight0;
462
            luma_weight_avg(  dest_y,  tmp_y,  h->  mb_linesize, 5, weight0, weight1, 0);
463
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
464
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
465
        }else{
466
            luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
467
                            h->luma_weight[refn0][0][0] , h->luma_weight[refn1][1][0],
468
                            h->luma_weight[refn0][0][1] + h->luma_weight[refn1][1][1]);
469
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
470
                            h->chroma_weight[refn0][0][0][0] , h->chroma_weight[refn1][1][0][0],
471
                            h->chroma_weight[refn0][0][0][1] + h->chroma_weight[refn1][1][0][1]);
472
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
473
                            h->chroma_weight[refn0][0][1][0] , h->chroma_weight[refn1][1][1][0],
474
                            h->chroma_weight[refn0][0][1][1] + h->chroma_weight[refn1][1][1][1]);
475
        }
476
    }else{
477
        int list = list1 ? 1 : 0;
478
        int refn = h->ref_cache[list][ scan8[n] ];
479
        Picture *ref= &h->ref_list[list][refn];
480
        mc_dir_part(h, ref, n, square, chroma_height, delta, list,
481
                    dest_y, dest_cb, dest_cr, x_offset, y_offset,
482
                    qpix_put, chroma_put);
483

    
484
        luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
485
                       h->luma_weight[refn][list][0], h->luma_weight[refn][list][1]);
486
        if(h->use_weight_chroma){
487
            chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
488
                             h->chroma_weight[refn][list][0][0], h->chroma_weight[refn][list][0][1]);
489
            chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
490
                             h->chroma_weight[refn][list][1][0], h->chroma_weight[refn][list][1][1]);
491
        }
492
    }
493
}
494

    
495
static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
496
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
497
                           int x_offset, int y_offset,
498
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
499
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
500
                           h264_weight_func *weight_op, h264_biweight_func *weight_avg,
501
                           int list0, int list1){
502
    if((h->use_weight==2 && list0 && list1
503
        && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ][h->s.mb_y&1] != 32))
504
       || h->use_weight==1)
505
        mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
506
                         x_offset, y_offset, qpix_put, chroma_put,
507
                         weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
508
    else
509
        mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
510
                    x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
511
}
512

    
513
static inline void prefetch_motion(H264Context *h, int list){
514
    /* fetch pixels for estimated mv 4 macroblocks ahead
515
     * optimized for 64byte cache lines */
516
    MpegEncContext * const s = &h->s;
517
    const int refn = h->ref_cache[list][scan8[0]];
518
    if(refn >= 0){
519
        const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
520
        const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
521
        uint8_t **src= h->ref_list[list][refn].data;
522
        int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
523
        s->dsp.prefetch(src[0]+off, s->linesize, 4);
524
        off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
525
        s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
526
    }
527
}
528

    
529
static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
530
                      qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
531
                      qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
532
                      h264_weight_func *weight_op, h264_biweight_func *weight_avg){
533
    MpegEncContext * const s = &h->s;
534
    const int mb_xy= h->mb_xy;
535
    const int mb_type= s->current_picture.mb_type[mb_xy];
536

    
537
    assert(IS_INTER(mb_type));
538

    
539
    prefetch_motion(h, 0);
540

    
541
    if(IS_16X16(mb_type)){
542
        mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
543
                qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
544
                weight_op, weight_avg,
545
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
546
    }else if(IS_16X8(mb_type)){
547
        mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
548
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
549
                &weight_op[1], &weight_avg[1],
550
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
551
        mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
552
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
553
                &weight_op[1], &weight_avg[1],
554
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
555
    }else if(IS_8X16(mb_type)){
556
        mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
557
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
558
                &weight_op[2], &weight_avg[2],
559
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
560
        mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
561
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
562
                &weight_op[2], &weight_avg[2],
563
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
564
    }else{
565
        int i;
566

    
567
        assert(IS_8X8(mb_type));
568

    
569
        for(i=0; i<4; i++){
570
            const int sub_mb_type= h->sub_mb_type[i];
571
            const int n= 4*i;
572
            int x_offset= (i&1)<<2;
573
            int y_offset= (i&2)<<1;
574

    
575
            if(IS_SUB_8X8(sub_mb_type)){
576
                mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
577
                    qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
578
                    &weight_op[3], &weight_avg[3],
579
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
580
            }else if(IS_SUB_8X4(sub_mb_type)){
581
                mc_part(h, n  , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
582
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
583
                    &weight_op[4], &weight_avg[4],
584
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
585
                mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
586
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
587
                    &weight_op[4], &weight_avg[4],
588
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
589
            }else if(IS_SUB_4X8(sub_mb_type)){
590
                mc_part(h, n  , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
591
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
592
                    &weight_op[5], &weight_avg[5],
593
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
594
                mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
595
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
596
                    &weight_op[5], &weight_avg[5],
597
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
598
            }else{
599
                int j;
600
                assert(IS_SUB_4X4(sub_mb_type));
601
                for(j=0; j<4; j++){
602
                    int sub_x_offset= x_offset + 2*(j&1);
603
                    int sub_y_offset= y_offset +   (j&2);
604
                    mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
605
                        qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
606
                        &weight_op[6], &weight_avg[6],
607
                        IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
608
                }
609
            }
610
        }
611
    }
612

    
613
    prefetch_motion(h, 1);
614
}
615

    
616

    
617
static void free_tables(H264Context *h, int free_rbsp){
618
    int i;
619
    H264Context *hx;
620
    av_freep(&h->intra4x4_pred_mode);
621
    av_freep(&h->chroma_pred_mode_table);
622
    av_freep(&h->cbp_table);
623
    av_freep(&h->mvd_table[0]);
624
    av_freep(&h->mvd_table[1]);
625
    av_freep(&h->direct_table);
626
    av_freep(&h->non_zero_count);
627
    av_freep(&h->slice_table_base);
628
    h->slice_table= NULL;
629
    av_freep(&h->list_counts);
630

    
631
    av_freep(&h->mb2b_xy);
632
    av_freep(&h->mb2br_xy);
633

    
634
    for(i = 0; i < MAX_THREADS; i++) {
635
        hx = h->thread_context[i];
636
        if(!hx) continue;
637
        av_freep(&hx->top_borders[1]);
638
        av_freep(&hx->top_borders[0]);
639
        av_freep(&hx->s.obmc_scratchpad);
640
        if (free_rbsp){
641
        av_freep(&hx->rbsp_buffer[1]);
642
        av_freep(&hx->rbsp_buffer[0]);
643
        hx->rbsp_buffer_size[0] = 0;
644
        hx->rbsp_buffer_size[1] = 0;
645
        }
646
        if (i) av_freep(&h->thread_context[i]);
647
    }
648
}
649

    
650
static void init_dequant8_coeff_table(H264Context *h){
651
    int i,q,x;
652
    h->dequant8_coeff[0] = h->dequant8_buffer[0];
653
    h->dequant8_coeff[1] = h->dequant8_buffer[1];
654

    
655
    for(i=0; i<2; i++ ){
656
        if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
657
            h->dequant8_coeff[1] = h->dequant8_buffer[0];
658
            break;
659
        }
660

    
661
        for(q=0; q<52; q++){
662
            int shift = div6[q];
663
            int idx = rem6[q];
664
            for(x=0; x<64; x++)
665
                h->dequant8_coeff[i][q][(x>>3)|((x&7)<<3)] =
666
                    ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
667
                    h->pps.scaling_matrix8[i][x]) << shift;
668
        }
669
    }
670
}
671

    
672
static void init_dequant4_coeff_table(H264Context *h){
673
    int i,j,q,x;
674
    for(i=0; i<6; i++ ){
675
        h->dequant4_coeff[i] = h->dequant4_buffer[i];
676
        for(j=0; j<i; j++){
677
            if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
678
                h->dequant4_coeff[i] = h->dequant4_buffer[j];
679
                break;
680
            }
681
        }
682
        if(j<i)
683
            continue;
684

    
685
        for(q=0; q<52; q++){
686
            int shift = div6[q] + 2;
687
            int idx = rem6[q];
688
            for(x=0; x<16; x++)
689
                h->dequant4_coeff[i][q][(x>>2)|((x<<2)&0xF)] =
690
                    ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
691
                    h->pps.scaling_matrix4[i][x]) << shift;
692
        }
693
    }
694
}
695

    
696
static void init_dequant_tables(H264Context *h){
697
    int i,x;
698
    init_dequant4_coeff_table(h);
699
    if(h->pps.transform_8x8_mode)
700
        init_dequant8_coeff_table(h);
701
    if(h->sps.transform_bypass){
702
        for(i=0; i<6; i++)
703
            for(x=0; x<16; x++)
704
                h->dequant4_coeff[i][0][x] = 1<<6;
705
        if(h->pps.transform_8x8_mode)
706
            for(i=0; i<2; i++)
707
                for(x=0; x<64; x++)
708
                    h->dequant8_coeff[i][0][x] = 1<<6;
709
    }
710
}
711

    
712

    
713
int ff_h264_alloc_tables(H264Context *h){
714
    MpegEncContext * const s = &h->s;
715
    const int big_mb_num= s->mb_stride * (s->mb_height+1);
716
    const int row_mb_num= 2*s->mb_stride*s->avctx->thread_count;
717
    int x,y;
718

    
719
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, row_mb_num * 8  * sizeof(uint8_t), fail)
720

    
721
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count    , big_mb_num * 32 * sizeof(uint8_t), fail)
722
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base  , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base), fail)
723
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table, big_mb_num * sizeof(uint16_t), fail)
724

    
725
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t), fail)
726
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0], 16*row_mb_num * sizeof(uint8_t), fail);
727
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 16*row_mb_num * sizeof(uint8_t), fail);
728
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 4*big_mb_num * sizeof(uint8_t) , fail);
729
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->list_counts, big_mb_num * sizeof(uint8_t), fail)
730

    
731
    memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride)  * sizeof(*h->slice_table_base));
732
    h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
733

    
734
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy  , big_mb_num * sizeof(uint32_t), fail);
735
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2br_xy , big_mb_num * sizeof(uint32_t), fail);
736
    for(y=0; y<s->mb_height; y++){
737
        for(x=0; x<s->mb_width; x++){
738
            const int mb_xy= x + y*s->mb_stride;
739
            const int b_xy = 4*x + 4*y*h->b_stride;
740

    
741
            h->mb2b_xy [mb_xy]= b_xy;
742
            h->mb2br_xy[mb_xy]= 8*(FMO ? mb_xy : (mb_xy % (2*s->mb_stride)));
743
        }
744
    }
745

    
746
    s->obmc_scratchpad = NULL;
747

    
748
    if(!h->dequant4_coeff[0])
749
        init_dequant_tables(h);
750

    
751
    return 0;
752
fail:
753
    free_tables(h, 1);
754
    return -1;
755
}
756

    
757
/**
758
 * Mimic alloc_tables(), but for every context thread.
759
 */
760
static void clone_tables(H264Context *dst, H264Context *src, int i){
761
    MpegEncContext * const s = &src->s;
762
    dst->intra4x4_pred_mode       = src->intra4x4_pred_mode + i*8*2*s->mb_stride;
763
    dst->non_zero_count           = src->non_zero_count;
764
    dst->slice_table              = src->slice_table;
765
    dst->cbp_table                = src->cbp_table;
766
    dst->mb2b_xy                  = src->mb2b_xy;
767
    dst->mb2br_xy                 = src->mb2br_xy;
768
    dst->chroma_pred_mode_table   = src->chroma_pred_mode_table;
769
    dst->mvd_table[0]             = src->mvd_table[0] + i*8*2*s->mb_stride;
770
    dst->mvd_table[1]             = src->mvd_table[1] + i*8*2*s->mb_stride;
771
    dst->direct_table             = src->direct_table;
772
    dst->list_counts              = src->list_counts;
773

    
774
    dst->s.obmc_scratchpad = NULL;
775
    ff_h264_pred_init(&dst->hpc, src->s.codec_id);
776
}
777

    
778
/**
779
 * Init context
780
 * Allocate buffers which are not shared amongst multiple threads.
781
 */
782
static int context_init(H264Context *h){
783
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
784
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
785

    
786
    h->ref_cache[0][scan8[5 ]+1] = h->ref_cache[0][scan8[7 ]+1] = h->ref_cache[0][scan8[13]+1] =
787
    h->ref_cache[1][scan8[5 ]+1] = h->ref_cache[1][scan8[7 ]+1] = h->ref_cache[1][scan8[13]+1] = PART_NOT_AVAILABLE;
788

    
789
    return 0;
790
fail:
791
    return -1; // free_tables will clean up for us
792
}
793

    
794
static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size);
795

    
796
static av_cold void common_init(H264Context *h){
797
    MpegEncContext * const s = &h->s;
798

    
799
    s->width = s->avctx->width;
800
    s->height = s->avctx->height;
801
    s->codec_id= s->avctx->codec->id;
802

    
803
    ff_h264dsp_init(&h->h264dsp);
804
    ff_h264_pred_init(&h->hpc, s->codec_id);
805

    
806
    h->dequant_coeff_pps= -1;
807
    s->unrestricted_mv=1;
808
    s->decode=1; //FIXME
809

    
810
    dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early
811

    
812
    memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
813
    memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
814
}
815

    
816
int ff_h264_decode_extradata(H264Context *h)
817
{
818
    AVCodecContext *avctx = h->s.avctx;
819

    
820
    if(*(char *)avctx->extradata == 1){
821
        int i, cnt, nalsize;
822
        unsigned char *p = avctx->extradata;
823

    
824
        h->is_avc = 1;
825

    
826
        if(avctx->extradata_size < 7) {
827
            av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
828
            return -1;
829
        }
830
        /* sps and pps in the avcC always have length coded with 2 bytes,
831
           so put a fake nal_length_size = 2 while parsing them */
832
        h->nal_length_size = 2;
833
        // Decode sps from avcC
834
        cnt = *(p+5) & 0x1f; // Number of sps
835
        p += 6;
836
        for (i = 0; i < cnt; i++) {
837
            nalsize = AV_RB16(p) + 2;
838
            if(decode_nal_units(h, p, nalsize) < 0) {
839
                av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
840
                return -1;
841
            }
842
            p += nalsize;
843
        }
844
        // Decode pps from avcC
845
        cnt = *(p++); // Number of pps
846
        for (i = 0; i < cnt; i++) {
847
            nalsize = AV_RB16(p) + 2;
848
            if(decode_nal_units(h, p, nalsize)  != nalsize) {
849
                av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
850
                return -1;
851
            }
852
            p += nalsize;
853
        }
854
        // Now store right nal length size, that will be use to parse all other nals
855
        h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
856
    } else {
857
        h->is_avc = 0;
858
        if(decode_nal_units(h, avctx->extradata, avctx->extradata_size) < 0)
859
            return -1;
860
    }
861
    return 0;
862
}
863

    
864
av_cold int ff_h264_decode_init(AVCodecContext *avctx){
865
    H264Context *h= avctx->priv_data;
866
    MpegEncContext * const s = &h->s;
867

    
868
    MPV_decode_defaults(s);
869

    
870
    s->avctx = avctx;
871
    common_init(h);
872

    
873
    s->out_format = FMT_H264;
874
    s->workaround_bugs= avctx->workaround_bugs;
875

    
876
    // set defaults
877
//    s->decode_mb= ff_h263_decode_mb;
878
    s->quarter_sample = 1;
879
    if(!avctx->has_b_frames)
880
    s->low_delay= 1;
881

    
882
    avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
883

    
884
    ff_h264_decode_init_vlc();
885

    
886
    h->thread_context[0] = h;
887
    h->outputed_poc = INT_MIN;
888
    h->prev_poc_msb= 1<<16;
889
    h->x264_build = -1;
890
    ff_h264_reset_sei(h);
891
    if(avctx->codec_id == CODEC_ID_H264){
892
        if(avctx->ticks_per_frame == 1){
893
            s->avctx->time_base.den *=2;
894
        }
895
        avctx->ticks_per_frame = 2;
896
    }
897

    
898
    if(avctx->extradata_size > 0 && avctx->extradata &&
899
        ff_h264_decode_extradata(h))
900
        return -1;
901

    
902
    if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames < h->sps.num_reorder_frames){
903
        s->avctx->has_b_frames = h->sps.num_reorder_frames;
904
        s->low_delay = 0;
905
    }
906

    
907
    return 0;
908
}
909

    
910
int ff_h264_frame_start(H264Context *h){
911
    MpegEncContext * const s = &h->s;
912
    int i;
913

    
914
    if(MPV_frame_start(s, s->avctx) < 0)
915
        return -1;
916
    ff_er_frame_start(s);
917
    /*
918
     * MPV_frame_start uses pict_type to derive key_frame.
919
     * This is incorrect for H.264; IDR markings must be used.
920
     * Zero here; IDR markings per slice in frame or fields are ORed in later.
921
     * See decode_nal_units().
922
     */
923
    s->current_picture_ptr->key_frame= 0;
924
    s->current_picture_ptr->mmco_reset= 0;
925

    
926
    assert(s->linesize && s->uvlinesize);
927

    
928
    for(i=0; i<16; i++){
929
        h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
930
        h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
931
    }
932
    for(i=0; i<4; i++){
933
        h->block_offset[16+i]=
934
        h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
935
        h->block_offset[24+16+i]=
936
        h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
937
    }
938

    
939
    /* can't be in alloc_tables because linesize isn't known there.
940
     * FIXME: redo bipred weight to not require extra buffer? */
941
    for(i = 0; i < s->avctx->thread_count; i++)
942
        if(h->thread_context[i] && !h->thread_context[i]->s.obmc_scratchpad)
943
            h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
944

    
945
    /* some macroblocks can be accessed before they're available in case of lost slices, mbaff or threading*/
946
    memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
947

    
948
//    s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
949

    
950
    // We mark the current picture as non-reference after allocating it, so
951
    // that if we break out due to an error it can be released automatically
952
    // in the next MPV_frame_start().
953
    // SVQ3 as well as most other codecs have only last/next/current and thus
954
    // get released even with set reference, besides SVQ3 and others do not
955
    // mark frames as reference later "naturally".
956
    if(s->codec_id != CODEC_ID_SVQ3)
957
        s->current_picture_ptr->reference= 0;
958

    
959
    s->current_picture_ptr->field_poc[0]=
960
    s->current_picture_ptr->field_poc[1]= INT_MAX;
961
    assert(s->current_picture_ptr->long_ref==0);
962

    
963
    return 0;
964
}
965

    
966
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){
967
    MpegEncContext * const s = &h->s;
968
    uint8_t *top_border;
969
    int top_idx = 1;
970

    
971
    src_y  -=   linesize;
972
    src_cb -= uvlinesize;
973
    src_cr -= uvlinesize;
974

    
975
    if(!simple && FRAME_MBAFF){
976
        if(s->mb_y&1){
977
            if(!MB_MBAFF){
978
                top_border = h->top_borders[0][s->mb_x];
979
                AV_COPY128(top_border, src_y + 15*linesize);
980
                if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
981
                    AV_COPY64(top_border+16, src_cb+7*uvlinesize);
982
                    AV_COPY64(top_border+24, src_cr+7*uvlinesize);
983
                }
984
            }
985
        }else if(MB_MBAFF){
986
            top_idx = 0;
987
        }else
988
            return;
989
    }
990

    
991
    top_border = h->top_borders[top_idx][s->mb_x];
992
    // There are two lines saved, the line above the the top macroblock of a pair,
993
    // and the line above the bottom macroblock
994
    AV_COPY128(top_border, src_y + 16*linesize);
995

    
996
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
997
        AV_COPY64(top_border+16, src_cb+8*uvlinesize);
998
        AV_COPY64(top_border+24, src_cr+8*uvlinesize);
999
    }
1000
}
1001

    
1002
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){
1003
    MpegEncContext * const s = &h->s;
1004
    int deblock_left;
1005
    int deblock_top;
1006
    int top_idx = 1;
1007
    uint8_t *top_border_m1;
1008
    uint8_t *top_border;
1009

    
1010
    if(!simple && FRAME_MBAFF){
1011
        if(s->mb_y&1){
1012
            if(!MB_MBAFF)
1013
                return;
1014
        }else{
1015
            top_idx = MB_MBAFF ? 0 : 1;
1016
        }
1017
    }
1018

    
1019
    if(h->deblocking_filter == 2) {
1020
        deblock_left = h->left_type[0];
1021
        deblock_top  = h->top_type;
1022
    } else {
1023
        deblock_left = (s->mb_x > 0);
1024
        deblock_top =  (s->mb_y > !!MB_FIELD);
1025
    }
1026

    
1027
    src_y  -=   linesize + 1;
1028
    src_cb -= uvlinesize + 1;
1029
    src_cr -= uvlinesize + 1;
1030

    
1031
    top_border_m1 = h->top_borders[top_idx][s->mb_x-1];
1032
    top_border    = h->top_borders[top_idx][s->mb_x];
1033

    
1034
#define XCHG(a,b,xchg)\
1035
if (xchg) AV_SWAP64(b,a);\
1036
else      AV_COPY64(b,a);
1037

    
1038
    if(deblock_top){
1039
        if(deblock_left){
1040
            XCHG(top_border_m1+8, src_y -7, 1);
1041
        }
1042
        XCHG(top_border+0, src_y +1, xchg);
1043
        XCHG(top_border+8, src_y +9, 1);
1044
        if(s->mb_x+1 < s->mb_width){
1045
            XCHG(h->top_borders[top_idx][s->mb_x+1], src_y +17, 1);
1046
        }
1047
    }
1048

    
1049
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1050
        if(deblock_top){
1051
            if(deblock_left){
1052
                XCHG(top_border_m1+16, src_cb -7, 1);
1053
                XCHG(top_border_m1+24, src_cr -7, 1);
1054
            }
1055
            XCHG(top_border+16, src_cb+1, 1);
1056
            XCHG(top_border+24, src_cr+1, 1);
1057
        }
1058
    }
1059
}
1060

    
1061
static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
1062
    MpegEncContext * const s = &h->s;
1063
    const int mb_x= s->mb_x;
1064
    const int mb_y= s->mb_y;
1065
    const int mb_xy= h->mb_xy;
1066
    const int mb_type= s->current_picture.mb_type[mb_xy];
1067
    uint8_t  *dest_y, *dest_cb, *dest_cr;
1068
    int linesize, uvlinesize /*dct_offset*/;
1069
    int i;
1070
    int *block_offset = &h->block_offset[0];
1071
    const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
1072
    /* is_h264 should always be true if SVQ3 is disabled. */
1073
    const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
1074
    void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1075
    void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
1076

    
1077
    dest_y  = s->current_picture.data[0] + (mb_x + mb_y * s->linesize  ) * 16;
1078
    dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
1079
    dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
1080

    
1081
    s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
1082
    s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
1083

    
1084
    h->list_counts[mb_xy]= h->list_count;
1085

    
1086
    if (!simple && MB_FIELD) {
1087
        linesize   = h->mb_linesize   = s->linesize * 2;
1088
        uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
1089
        block_offset = &h->block_offset[24];
1090
        if(mb_y&1){ //FIXME move out of this function?
1091
            dest_y -= s->linesize*15;
1092
            dest_cb-= s->uvlinesize*7;
1093
            dest_cr-= s->uvlinesize*7;
1094
        }
1095
        if(FRAME_MBAFF) {
1096
            int list;
1097
            for(list=0; list<h->list_count; list++){
1098
                if(!USES_LIST(mb_type, list))
1099
                    continue;
1100
                if(IS_16X16(mb_type)){
1101
                    int8_t *ref = &h->ref_cache[list][scan8[0]];
1102
                    fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
1103
                }else{
1104
                    for(i=0; i<16; i+=4){
1105
                        int ref = h->ref_cache[list][scan8[i]];
1106
                        if(ref >= 0)
1107
                            fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
1108
                    }
1109
                }
1110
            }
1111
        }
1112
    } else {
1113
        linesize   = h->mb_linesize   = s->linesize;
1114
        uvlinesize = h->mb_uvlinesize = s->uvlinesize;
1115
//        dct_offset = s->linesize * 16;
1116
    }
1117

    
1118
    if (!simple && IS_INTRA_PCM(mb_type)) {
1119
        for (i=0; i<16; i++) {
1120
            memcpy(dest_y + i*  linesize, h->mb       + i*8, 16);
1121
        }
1122
        for (i=0; i<8; i++) {
1123
            memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4,  8);
1124
            memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4,  8);
1125
        }
1126
    } else {
1127
        if(IS_INTRA(mb_type)){
1128
            if(h->deblocking_filter)
1129
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
1130

    
1131
            if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1132
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
1133
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
1134
            }
1135

    
1136
            if(IS_INTRA4x4(mb_type)){
1137
                if(simple || !s->encoding){
1138
                    if(IS_8x8DCT(mb_type)){
1139
                        if(transform_bypass){
1140
                            idct_dc_add =
1141
                            idct_add    = s->dsp.add_pixels8;
1142
                        }else{
1143
                            idct_dc_add = h->h264dsp.h264_idct8_dc_add;
1144
                            idct_add    = h->h264dsp.h264_idct8_add;
1145
                        }
1146
                        for(i=0; i<16; i+=4){
1147
                            uint8_t * const ptr= dest_y + block_offset[i];
1148
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1149
                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1150
                                h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
1151
                            }else{
1152
                                const int nnz = h->non_zero_count_cache[ scan8[i] ];
1153
                                h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
1154
                                                            (h->topright_samples_available<<i)&0x4000, linesize);
1155
                                if(nnz){
1156
                                    if(nnz == 1 && h->mb[i*16])
1157
                                        idct_dc_add(ptr, h->mb + i*16, linesize);
1158
                                    else
1159
                                        idct_add   (ptr, h->mb + i*16, linesize);
1160
                                }
1161
                            }
1162
                        }
1163
                    }else{
1164
                        if(transform_bypass){
1165
                            idct_dc_add =
1166
                            idct_add    = s->dsp.add_pixels4;
1167
                        }else{
1168
                            idct_dc_add = h->h264dsp.h264_idct_dc_add;
1169
                            idct_add    = h->h264dsp.h264_idct_add;
1170
                        }
1171
                        for(i=0; i<16; i++){
1172
                            uint8_t * const ptr= dest_y + block_offset[i];
1173
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1174

    
1175
                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1176
                                h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
1177
                            }else{
1178
                                uint8_t *topright;
1179
                                int nnz, tr;
1180
                                if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
1181
                                    const int topright_avail= (h->topright_samples_available<<i)&0x8000;
1182
                                    assert(mb_y || linesize <= block_offset[i]);
1183
                                    if(!topright_avail){
1184
                                        tr= ptr[3 - linesize]*0x01010101;
1185
                                        topright= (uint8_t*) &tr;
1186
                                    }else
1187
                                        topright= ptr + 4 - linesize;
1188
                                }else
1189
                                    topright= NULL;
1190

    
1191
                                h->hpc.pred4x4[ dir ](ptr, topright, linesize);
1192
                                nnz = h->non_zero_count_cache[ scan8[i] ];
1193
                                if(nnz){
1194
                                    if(is_h264){
1195
                                        if(nnz == 1 && h->mb[i*16])
1196
                                            idct_dc_add(ptr, h->mb + i*16, linesize);
1197
                                        else
1198
                                            idct_add   (ptr, h->mb + i*16, linesize);
1199
                                    }else
1200
                                        ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
1201
                                }
1202
                            }
1203
                        }
1204
                    }
1205
                }
1206
            }else{
1207
                h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
1208
                if(is_h264){
1209
                    if(h->non_zero_count_cache[ scan8[LUMA_DC_BLOCK_INDEX] ]){
1210
                        if(!transform_bypass)
1211
                            h->h264dsp.h264_luma_dc_dequant_idct(h->mb, h->mb_luma_dc, h->dequant4_coeff[0][s->qscale][0]);
1212
                        else{
1213
                            static const uint8_t dc_mapping[16] = { 0*16, 1*16, 4*16, 5*16, 2*16, 3*16, 6*16, 7*16,
1214
                                                                    8*16, 9*16,12*16,13*16,10*16,11*16,14*16,15*16};
1215
                            for(i = 0; i < 16; i++)
1216
                                h->mb[dc_mapping[i]] = h->mb_luma_dc[i];
1217
                        }
1218
                    }
1219
                }else
1220
                    ff_svq3_luma_dc_dequant_idct_c(h->mb, h->mb_luma_dc, s->qscale);
1221
            }
1222
            if(h->deblocking_filter)
1223
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
1224
        }else if(is_h264){
1225
            hl_motion(h, dest_y, dest_cb, dest_cr,
1226
                      s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1227
                      s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1228
                      h->h264dsp.weight_h264_pixels_tab, h->h264dsp.biweight_h264_pixels_tab);
1229
        }
1230

    
1231

    
1232
        if(!IS_INTRA4x4(mb_type)){
1233
            if(is_h264){
1234
                if(IS_INTRA16x16(mb_type)){
1235
                    if(transform_bypass){
1236
                        if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
1237
                            h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
1238
                        }else{
1239
                            for(i=0; i<16; i++){
1240
                                if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1241
                                    s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
1242
                            }
1243
                        }
1244
                    }else{
1245
                         h->h264dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1246
                    }
1247
                }else if(h->cbp&15){
1248
                    if(transform_bypass){
1249
                        const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1250
                        idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
1251
                        for(i=0; i<16; i+=di){
1252
                            if(h->non_zero_count_cache[ scan8[i] ]){
1253
                                idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
1254
                            }
1255
                        }
1256
                    }else{
1257
                        if(IS_8x8DCT(mb_type)){
1258
                            h->h264dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1259
                        }else{
1260
                            h->h264dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1261
                        }
1262
                    }
1263
                }
1264
            }else{
1265
                for(i=0; i<16; i++){
1266
                    if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
1267
                        uint8_t * const ptr= dest_y + block_offset[i];
1268
                        ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1269
                    }
1270
                }
1271
            }
1272
        }
1273

    
1274
        if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
1275
            uint8_t *dest[2] = {dest_cb, dest_cr};
1276
            if(transform_bypass){
1277
                if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
1278
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
1279
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
1280
                }else{
1281
                    idct_add = s->dsp.add_pixels4;
1282
                    for(i=16; i<16+8; i++){
1283
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1284
                            idct_add   (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1285
                    }
1286
                }
1287
            }else{
1288
                if(is_h264){
1289
                    if(h->non_zero_count_cache[ scan8[CHROMA_DC_BLOCK_INDEX+0] ])
1290
                        chroma_dc_dequant_idct_c(h->mb + 16*16     , h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
1291
                    if(h->non_zero_count_cache[ scan8[CHROMA_DC_BLOCK_INDEX+1] ])
1292
                        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]);
1293
                    h->h264dsp.h264_idct_add8(dest, block_offset,
1294
                                              h->mb, uvlinesize,
1295
                                              h->non_zero_count_cache);
1296
                }else{
1297
                    chroma_dc_dequant_idct_c(h->mb + 16*16     , h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
1298
                    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]);
1299
                    for(i=16; i<16+8; i++){
1300
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
1301
                            uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
1302
                            ff_svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[s->qscale + 12] - 12, 2);
1303
                        }
1304
                    }
1305
                }
1306
            }
1307
        }
1308
    }
1309
    if(h->cbp || IS_INTRA(mb_type))
1310
        s->dsp.clear_blocks(h->mb);
1311
}
1312

    
1313
/**
1314
 * Process a macroblock; this case avoids checks for expensive uncommon cases.
1315
 */
1316
static void hl_decode_mb_simple(H264Context *h){
1317
    hl_decode_mb_internal(h, 1);
1318
}
1319

    
1320
/**
1321
 * Process a macroblock; this handles edge cases, such as interlacing.
1322
 */
1323
static void av_noinline hl_decode_mb_complex(H264Context *h){
1324
    hl_decode_mb_internal(h, 0);
1325
}
1326

    
1327
void ff_h264_hl_decode_mb(H264Context *h){
1328
    MpegEncContext * const s = &h->s;
1329
    const int mb_xy= h->mb_xy;
1330
    const int mb_type= s->current_picture.mb_type[mb_xy];
1331
    int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1332

    
1333
    if (is_complex)
1334
        hl_decode_mb_complex(h);
1335
    else hl_decode_mb_simple(h);
1336
}
1337

    
1338
static int pred_weight_table(H264Context *h){
1339
    MpegEncContext * const s = &h->s;
1340
    int list, i;
1341
    int luma_def, chroma_def;
1342

    
1343
    h->use_weight= 0;
1344
    h->use_weight_chroma= 0;
1345
    h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
1346
    if(CHROMA)
1347
        h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
1348
    luma_def = 1<<h->luma_log2_weight_denom;
1349
    chroma_def = 1<<h->chroma_log2_weight_denom;
1350

    
1351
    for(list=0; list<2; list++){
1352
        h->luma_weight_flag[list]   = 0;
1353
        h->chroma_weight_flag[list] = 0;
1354
        for(i=0; i<h->ref_count[list]; i++){
1355
            int luma_weight_flag, chroma_weight_flag;
1356

    
1357
            luma_weight_flag= get_bits1(&s->gb);
1358
            if(luma_weight_flag){
1359
                h->luma_weight[i][list][0]= get_se_golomb(&s->gb);
1360
                h->luma_weight[i][list][1]= get_se_golomb(&s->gb);
1361
                if(   h->luma_weight[i][list][0] != luma_def
1362
                   || h->luma_weight[i][list][1] != 0) {
1363
                    h->use_weight= 1;
1364
                    h->luma_weight_flag[list]= 1;
1365
                }
1366
            }else{
1367
                h->luma_weight[i][list][0]= luma_def;
1368
                h->luma_weight[i][list][1]= 0;
1369
            }
1370

    
1371
            if(CHROMA){
1372
                chroma_weight_flag= get_bits1(&s->gb);
1373
                if(chroma_weight_flag){
1374
                    int j;
1375
                    for(j=0; j<2; j++){
1376
                        h->chroma_weight[i][list][j][0]= get_se_golomb(&s->gb);
1377
                        h->chroma_weight[i][list][j][1]= get_se_golomb(&s->gb);
1378
                        if(   h->chroma_weight[i][list][j][0] != chroma_def
1379
                           || h->chroma_weight[i][list][j][1] != 0) {
1380
                            h->use_weight_chroma= 1;
1381
                            h->chroma_weight_flag[list]= 1;
1382
                        }
1383
                    }
1384
                }else{
1385
                    int j;
1386
                    for(j=0; j<2; j++){
1387
                        h->chroma_weight[i][list][j][0]= chroma_def;
1388
                        h->chroma_weight[i][list][j][1]= 0;
1389
                    }
1390
                }
1391
            }
1392
        }
1393
        if(h->slice_type_nos != FF_B_TYPE) break;
1394
    }
1395
    h->use_weight= h->use_weight || h->use_weight_chroma;
1396
    return 0;
1397
}
1398

    
1399
/**
1400
 * Initialize implicit_weight table.
1401
 * @param field  0/1 initialize the weight for interlaced MBAFF
1402
 *                -1 initializes the rest
1403
 */
1404
static void implicit_weight_table(H264Context *h, int field){
1405
    MpegEncContext * const s = &h->s;
1406
    int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
1407

    
1408
    for (i = 0; i < 2; i++) {
1409
        h->luma_weight_flag[i]   = 0;
1410
        h->chroma_weight_flag[i] = 0;
1411
    }
1412

    
1413
    if(field < 0){
1414
        cur_poc = s->current_picture_ptr->poc;
1415
    if(   h->ref_count[0] == 1 && h->ref_count[1] == 1 && !FRAME_MBAFF
1416
       && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
1417
        h->use_weight= 0;
1418
        h->use_weight_chroma= 0;
1419
        return;
1420
    }
1421
        ref_start= 0;
1422
        ref_count0= h->ref_count[0];
1423
        ref_count1= h->ref_count[1];
1424
    }else{
1425
        cur_poc = s->current_picture_ptr->field_poc[field];
1426
        ref_start= 16;
1427
        ref_count0= 16+2*h->ref_count[0];
1428
        ref_count1= 16+2*h->ref_count[1];
1429
    }
1430

    
1431
    h->use_weight= 2;
1432
    h->use_weight_chroma= 2;
1433
    h->luma_log2_weight_denom= 5;
1434
    h->chroma_log2_weight_denom= 5;
1435

    
1436
    for(ref0=ref_start; ref0 < ref_count0; ref0++){
1437
        int poc0 = h->ref_list[0][ref0].poc;
1438
        for(ref1=ref_start; ref1 < ref_count1; ref1++){
1439
            int poc1 = h->ref_list[1][ref1].poc;
1440
            int td = av_clip(poc1 - poc0, -128, 127);
1441
            int w= 32;
1442
            if(td){
1443
                int tb = av_clip(cur_poc - poc0, -128, 127);
1444
                int tx = (16384 + (FFABS(td) >> 1)) / td;
1445
                int dist_scale_factor = (tb*tx + 32) >> 8;
1446
                if(dist_scale_factor >= -64 && dist_scale_factor <= 128)
1447
                    w = 64 - dist_scale_factor;
1448
            }
1449
            if(field<0){
1450
                h->implicit_weight[ref0][ref1][0]=
1451
                h->implicit_weight[ref0][ref1][1]= w;
1452
            }else{
1453
                h->implicit_weight[ref0][ref1][field]=w;
1454
            }
1455
        }
1456
    }
1457
}
1458

    
1459
/**
1460
 * instantaneous decoder refresh.
1461
 */
1462
static void idr(H264Context *h){
1463
    ff_h264_remove_all_refs(h);
1464
    h->prev_frame_num= 0;
1465
    h->prev_frame_num_offset= 0;
1466
    h->prev_poc_msb=
1467
    h->prev_poc_lsb= 0;
1468
}
1469

    
1470
/* forget old pics after a seek */
1471
static void flush_dpb(AVCodecContext *avctx){
1472
    H264Context *h= avctx->priv_data;
1473
    int i;
1474
    for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
1475
        if(h->delayed_pic[i])
1476
            h->delayed_pic[i]->reference= 0;
1477
        h->delayed_pic[i]= NULL;
1478
    }
1479
    h->outputed_poc= INT_MIN;
1480
    h->prev_interlaced_frame = 1;
1481
    idr(h);
1482
    if(h->s.current_picture_ptr)
1483
        h->s.current_picture_ptr->reference= 0;
1484
    h->s.first_field= 0;
1485
    ff_h264_reset_sei(h);
1486
    ff_mpeg_flush(avctx);
1487
}
1488

    
1489
static int init_poc(H264Context *h){
1490
    MpegEncContext * const s = &h->s;
1491
    const int max_frame_num= 1<<h->sps.log2_max_frame_num;
1492
    int field_poc[2];
1493
    Picture *cur = s->current_picture_ptr;
1494

    
1495
    h->frame_num_offset= h->prev_frame_num_offset;
1496
    if(h->frame_num < h->prev_frame_num)
1497
        h->frame_num_offset += max_frame_num;
1498

    
1499
    if(h->sps.poc_type==0){
1500
        const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
1501

    
1502
        if     (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
1503
            h->poc_msb = h->prev_poc_msb + max_poc_lsb;
1504
        else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
1505
            h->poc_msb = h->prev_poc_msb - max_poc_lsb;
1506
        else
1507
            h->poc_msb = h->prev_poc_msb;
1508
//printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
1509
        field_poc[0] =
1510
        field_poc[1] = h->poc_msb + h->poc_lsb;
1511
        if(s->picture_structure == PICT_FRAME)
1512
            field_poc[1] += h->delta_poc_bottom;
1513
    }else if(h->sps.poc_type==1){
1514
        int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
1515
        int i;
1516

    
1517
        if(h->sps.poc_cycle_length != 0)
1518
            abs_frame_num = h->frame_num_offset + h->frame_num;
1519
        else
1520
            abs_frame_num = 0;
1521

    
1522
        if(h->nal_ref_idc==0 && abs_frame_num > 0)
1523
            abs_frame_num--;
1524

    
1525
        expected_delta_per_poc_cycle = 0;
1526
        for(i=0; i < h->sps.poc_cycle_length; i++)
1527
            expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
1528

    
1529
        if(abs_frame_num > 0){
1530
            int poc_cycle_cnt          = (abs_frame_num - 1) / h->sps.poc_cycle_length;
1531
            int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
1532

    
1533
            expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
1534
            for(i = 0; i <= frame_num_in_poc_cycle; i++)
1535
                expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
1536
        } else
1537
            expectedpoc = 0;
1538

    
1539
        if(h->nal_ref_idc == 0)
1540
            expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
1541

    
1542
        field_poc[0] = expectedpoc + h->delta_poc[0];
1543
        field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
1544

    
1545
        if(s->picture_structure == PICT_FRAME)
1546
            field_poc[1] += h->delta_poc[1];
1547
    }else{
1548
        int poc= 2*(h->frame_num_offset + h->frame_num);
1549

    
1550
        if(!h->nal_ref_idc)
1551
            poc--;
1552

    
1553
        field_poc[0]= poc;
1554
        field_poc[1]= poc;
1555
    }
1556

    
1557
    if(s->picture_structure != PICT_BOTTOM_FIELD)
1558
        s->current_picture_ptr->field_poc[0]= field_poc[0];
1559
    if(s->picture_structure != PICT_TOP_FIELD)
1560
        s->current_picture_ptr->field_poc[1]= field_poc[1];
1561
    cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
1562

    
1563
    return 0;
1564
}
1565

    
1566

    
1567
/**
1568
 * initialize scan tables
1569
 */
1570
static void init_scan_tables(H264Context *h){
1571
    int i;
1572
    for(i=0; i<16; i++){
1573
#define T(x) (x>>2) | ((x<<2) & 0xF)
1574
        h->zigzag_scan[i] = T(zigzag_scan[i]);
1575
        h-> field_scan[i] = T( field_scan[i]);
1576
#undef T
1577
    }
1578
    for(i=0; i<64; i++){
1579
#define T(x) (x>>3) | ((x&7)<<3)
1580
        h->zigzag_scan8x8[i]       = T(ff_zigzag_direct[i]);
1581
        h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
1582
        h->field_scan8x8[i]        = T(field_scan8x8[i]);
1583
        h->field_scan8x8_cavlc[i]  = T(field_scan8x8_cavlc[i]);
1584
#undef T
1585
    }
1586
    if(h->sps.transform_bypass){ //FIXME same ugly
1587
        h->zigzag_scan_q0          = zigzag_scan;
1588
        h->zigzag_scan8x8_q0       = ff_zigzag_direct;
1589
        h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
1590
        h->field_scan_q0           = field_scan;
1591
        h->field_scan8x8_q0        = field_scan8x8;
1592
        h->field_scan8x8_cavlc_q0  = field_scan8x8_cavlc;
1593
    }else{
1594
        h->zigzag_scan_q0          = h->zigzag_scan;
1595
        h->zigzag_scan8x8_q0       = h->zigzag_scan8x8;
1596
        h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
1597
        h->field_scan_q0           = h->field_scan;
1598
        h->field_scan8x8_q0        = h->field_scan8x8;
1599
        h->field_scan8x8_cavlc_q0  = h->field_scan8x8_cavlc;
1600
    }
1601
}
1602

    
1603
static void field_end(H264Context *h){
1604
    MpegEncContext * const s = &h->s;
1605
    AVCodecContext * const avctx= s->avctx;
1606
    s->mb_y= 0;
1607

    
1608
    s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
1609
    s->current_picture_ptr->pict_type= s->pict_type;
1610

    
1611
    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1612
        ff_vdpau_h264_set_reference_frames(s);
1613

    
1614
    if(!s->dropable) {
1615
        ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1616
        h->prev_poc_msb= h->poc_msb;
1617
        h->prev_poc_lsb= h->poc_lsb;
1618
    }
1619
    h->prev_frame_num_offset= h->frame_num_offset;
1620
    h->prev_frame_num= h->frame_num;
1621

    
1622
    if (avctx->hwaccel) {
1623
        if (avctx->hwaccel->end_frame(avctx) < 0)
1624
            av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
1625
    }
1626

    
1627
    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1628
        ff_vdpau_h264_picture_complete(s);
1629

    
1630
    /*
1631
     * FIXME: Error handling code does not seem to support interlaced
1632
     * when slices span multiple rows
1633
     * The ff_er_add_slice calls don't work right for bottom
1634
     * fields; they cause massive erroneous error concealing
1635
     * Error marking covers both fields (top and bottom).
1636
     * This causes a mismatched s->error_count
1637
     * and a bad error table. Further, the error count goes to
1638
     * INT_MAX when called for bottom field, because mb_y is
1639
     * past end by one (callers fault) and resync_mb_y != 0
1640
     * causes problems for the first MB line, too.
1641
     */
1642
    if (!FIELD_PICTURE)
1643
        ff_er_frame_end(s);
1644

    
1645
    MPV_frame_end(s);
1646

    
1647
    h->current_slice=0;
1648
}
1649

    
1650
/**
1651
 * Replicate H264 "master" context to thread contexts.
1652
 */
1653
static void clone_slice(H264Context *dst, H264Context *src)
1654
{
1655
    memcpy(dst->block_offset,     src->block_offset, sizeof(dst->block_offset));
1656
    dst->s.current_picture_ptr  = src->s.current_picture_ptr;
1657
    dst->s.current_picture      = src->s.current_picture;
1658
    dst->s.linesize             = src->s.linesize;
1659
    dst->s.uvlinesize           = src->s.uvlinesize;
1660
    dst->s.first_field          = src->s.first_field;
1661

    
1662
    dst->prev_poc_msb           = src->prev_poc_msb;
1663
    dst->prev_poc_lsb           = src->prev_poc_lsb;
1664
    dst->prev_frame_num_offset  = src->prev_frame_num_offset;
1665
    dst->prev_frame_num         = src->prev_frame_num;
1666
    dst->short_ref_count        = src->short_ref_count;
1667

    
1668
    memcpy(dst->short_ref,        src->short_ref,        sizeof(dst->short_ref));
1669
    memcpy(dst->long_ref,         src->long_ref,         sizeof(dst->long_ref));
1670
    memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
1671
    memcpy(dst->ref_list,         src->ref_list,         sizeof(dst->ref_list));
1672

    
1673
    memcpy(dst->dequant4_coeff,   src->dequant4_coeff,   sizeof(src->dequant4_coeff));
1674
    memcpy(dst->dequant8_coeff,   src->dequant8_coeff,   sizeof(src->dequant8_coeff));
1675
}
1676

    
1677
/**
1678
 * decodes a slice header.
1679
 * This will also call MPV_common_init() and frame_start() as needed.
1680
 *
1681
 * @param h h264context
1682
 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
1683
 *
1684
 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
1685
 */
1686
static int decode_slice_header(H264Context *h, H264Context *h0){
1687
    MpegEncContext * const s = &h->s;
1688
    MpegEncContext * const s0 = &h0->s;
1689
    unsigned int first_mb_in_slice;
1690
    unsigned int pps_id;
1691
    int num_ref_idx_active_override_flag;
1692
    unsigned int slice_type, tmp, i, j;
1693
    int default_ref_list_done = 0;
1694
    int last_pic_structure;
1695

    
1696
    s->dropable= h->nal_ref_idc == 0;
1697

    
1698
    if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
1699
        s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
1700
        s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
1701
    }else{
1702
        s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
1703
        s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
1704
    }
1705

    
1706
    first_mb_in_slice= get_ue_golomb(&s->gb);
1707

    
1708
    if(first_mb_in_slice == 0){ //FIXME better field boundary detection
1709
        if(h0->current_slice && FIELD_PICTURE){
1710
            field_end(h);
1711
        }
1712

    
1713
        h0->current_slice = 0;
1714
        if (!s0->first_field)
1715
            s->current_picture_ptr= NULL;
1716
    }
1717

    
1718
    slice_type= get_ue_golomb_31(&s->gb);
1719
    if(slice_type > 9){
1720
        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);
1721
        return -1;
1722
    }
1723
    if(slice_type > 4){
1724
        slice_type -= 5;
1725
        h->slice_type_fixed=1;
1726
    }else
1727
        h->slice_type_fixed=0;
1728

    
1729
    slice_type= golomb_to_pict_type[ slice_type ];
1730
    if (slice_type == FF_I_TYPE
1731
        || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
1732
        default_ref_list_done = 1;
1733
    }
1734
    h->slice_type= slice_type;
1735
    h->slice_type_nos= slice_type & 3;
1736

    
1737
    s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
1738

    
1739
    pps_id= get_ue_golomb(&s->gb);
1740
    if(pps_id>=MAX_PPS_COUNT){
1741
        av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
1742
        return -1;
1743
    }
1744
    if(!h0->pps_buffers[pps_id]) {
1745
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
1746
        return -1;
1747
    }
1748
    h->pps= *h0->pps_buffers[pps_id];
1749

    
1750
    if(!h0->sps_buffers[h->pps.sps_id]) {
1751
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
1752
        return -1;
1753
    }
1754
    h->sps = *h0->sps_buffers[h->pps.sps_id];
1755

    
1756
    s->avctx->profile = h->sps.profile_idc;
1757
    s->avctx->level   = h->sps.level_idc;
1758
    s->avctx->refs    = h->sps.ref_frame_count;
1759

    
1760
    if(h == h0 && h->dequant_coeff_pps != pps_id){
1761
        h->dequant_coeff_pps = pps_id;
1762
        init_dequant_tables(h);
1763
    }
1764

    
1765
    s->mb_width= h->sps.mb_width;
1766
    s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
1767

    
1768
    h->b_stride=  s->mb_width*4;
1769

    
1770
    s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
1771
    if(h->sps.frame_mbs_only_flag)
1772
        s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
1773
    else
1774
        s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 7);
1775

    
1776
    if (s->context_initialized
1777
        && (   s->width != s->avctx->width || s->height != s->avctx->height
1778
            || av_cmp_q(h->sps.sar, s->avctx->sample_aspect_ratio))) {
1779
        if(h != h0)
1780
            return -1;   // width / height changed during parallelized decoding
1781
        free_tables(h, 0);
1782
        flush_dpb(s->avctx);
1783
        MPV_common_end(s);
1784
    }
1785
    if (!s->context_initialized) {
1786
        if(h != h0)
1787
            return -1;  // we cant (re-)initialize context during parallel decoding
1788

    
1789
        avcodec_set_dimensions(s->avctx, s->width, s->height);
1790
        s->avctx->sample_aspect_ratio= h->sps.sar;
1791
        av_assert0(s->avctx->sample_aspect_ratio.den);
1792

    
1793
        if(h->sps.video_signal_type_present_flag){
1794
            s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
1795
            if(h->sps.colour_description_present_flag){
1796
                s->avctx->color_primaries = h->sps.color_primaries;
1797
                s->avctx->color_trc       = h->sps.color_trc;
1798
                s->avctx->colorspace      = h->sps.colorspace;
1799
            }
1800
        }
1801

    
1802
        if(h->sps.timing_info_present_flag){
1803
            int64_t den= h->sps.time_scale;
1804
            if(h->x264_build < 44U)
1805
                den *= 2;
1806
            av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
1807
                      h->sps.num_units_in_tick, den, 1<<30);
1808
        }
1809
        s->avctx->pix_fmt = s->avctx->get_format(s->avctx,
1810
                                                 s->avctx->codec->pix_fmts ?
1811
                                                 s->avctx->codec->pix_fmts :
1812
                                                 s->avctx->color_range == AVCOL_RANGE_JPEG ?
1813
                                                 hwaccel_pixfmt_list_h264_jpeg_420 :
1814
                                                 ff_hwaccel_pixfmt_list_420);
1815
        s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
1816

    
1817
        if (MPV_common_init(s) < 0)
1818
            return -1;
1819
        s->first_field = 0;
1820
        h->prev_interlaced_frame = 1;
1821

    
1822
        init_scan_tables(h);
1823
        ff_h264_alloc_tables(h);
1824

    
1825
        for(i = 1; i < s->avctx->thread_count; i++) {
1826
            H264Context *c;
1827
            c = h->thread_context[i] = av_malloc(sizeof(H264Context));
1828
            memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
1829
            memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
1830
            c->h264dsp = h->h264dsp;
1831
            c->sps = h->sps;
1832
            c->pps = h->pps;
1833
            init_scan_tables(c);
1834
            clone_tables(c, h, i);
1835
        }
1836

    
1837
        for(i = 0; i < s->avctx->thread_count; i++)
1838
            if(context_init(h->thread_context[i]) < 0)
1839
                return -1;
1840
    }
1841

    
1842
    h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
1843

    
1844
    h->mb_mbaff = 0;
1845
    h->mb_aff_frame = 0;
1846
    last_pic_structure = s0->picture_structure;
1847
    if(h->sps.frame_mbs_only_flag){
1848
        s->picture_structure= PICT_FRAME;
1849
    }else{
1850
        if(get_bits1(&s->gb)) { //field_pic_flag
1851
            s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
1852
        } else {
1853
            s->picture_structure= PICT_FRAME;
1854
            h->mb_aff_frame = h->sps.mb_aff;
1855
        }
1856
    }
1857
    h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
1858

    
1859
    if(h0->current_slice == 0){
1860
        while(h->frame_num !=  h->prev_frame_num &&
1861
              h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
1862
            Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
1863
            av_log(h->s.avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
1864
            if (ff_h264_frame_start(h) < 0)
1865
                return -1;
1866
            h->prev_frame_num++;
1867
            h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
1868
            s->current_picture_ptr->frame_num= h->prev_frame_num;
1869
            ff_generate_sliding_window_mmcos(h);
1870
            ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1871
            /* Error concealment: if a ref is missing, copy the previous ref in its place.
1872
             * FIXME: avoiding a memcpy would be nice, but ref handling makes many assumptions
1873
             * about there being no actual duplicates.
1874
             * FIXME: this doesn't copy padding for out-of-frame motion vectors.  Given we're
1875
             * concealing a lost frame, this probably isn't noticable by comparison, but it should
1876
             * be fixed. */
1877
            if (h->short_ref_count) {
1878
                if (prev) {
1879
                    av_image_copy(h->short_ref[0]->data, h->short_ref[0]->linesize,
1880
                                  (const uint8_t**)prev->data, prev->linesize,
1881
                                  s->avctx->pix_fmt, s->mb_width*16, s->mb_height*16);
1882
                    h->short_ref[0]->poc = prev->poc+2;
1883
                }
1884
                h->short_ref[0]->frame_num = h->prev_frame_num;
1885
            }
1886
        }
1887

    
1888
        /* See if we have a decoded first field looking for a pair... */
1889
        if (s0->first_field) {
1890
            assert(s0->current_picture_ptr);
1891
            assert(s0->current_picture_ptr->data[0]);
1892
            assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
1893

    
1894
            /* figure out if we have a complementary field pair */
1895
            if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
1896
                /*
1897
                 * Previous field is unmatched. Don't display it, but let it
1898
                 * remain for reference if marked as such.
1899
                 */
1900
                s0->current_picture_ptr = NULL;
1901
                s0->first_field = FIELD_PICTURE;
1902

    
1903
            } else {
1904
                if (h->nal_ref_idc &&
1905
                        s0->current_picture_ptr->reference &&
1906
                        s0->current_picture_ptr->frame_num != h->frame_num) {
1907
                    /*
1908
                     * This and previous field were reference, but had
1909
                     * different frame_nums. Consider this field first in
1910
                     * pair. Throw away previous field except for reference
1911
                     * purposes.
1912
                     */
1913
                    s0->first_field = 1;
1914
                    s0->current_picture_ptr = NULL;
1915

    
1916
                } else {
1917
                    /* Second field in complementary pair */
1918
                    s0->first_field = 0;
1919
                }
1920
            }
1921

    
1922
        } else {
1923
            /* Frame or first field in a potentially complementary pair */
1924
            assert(!s0->current_picture_ptr);
1925
            s0->first_field = FIELD_PICTURE;
1926
        }
1927

    
1928
        if((!FIELD_PICTURE || s0->first_field) && ff_h264_frame_start(h) < 0) {
1929
            s0->first_field = 0;
1930
            return -1;
1931
        }
1932
    }
1933
    if(h != h0)
1934
        clone_slice(h, h0);
1935

    
1936
    s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
1937

    
1938
    assert(s->mb_num == s->mb_width * s->mb_height);
1939
    if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
1940
       first_mb_in_slice                    >= s->mb_num){
1941
        av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1942
        return -1;
1943
    }
1944
    s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
1945
    s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
1946
    if (s->picture_structure == PICT_BOTTOM_FIELD)
1947
        s->resync_mb_y = s->mb_y = s->mb_y + 1;
1948
    assert(s->mb_y < s->mb_height);
1949

    
1950
    if(s->picture_structure==PICT_FRAME){
1951
        h->curr_pic_num=   h->frame_num;
1952
        h->max_pic_num= 1<< h->sps.log2_max_frame_num;
1953
    }else{
1954
        h->curr_pic_num= 2*h->frame_num + 1;
1955
        h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
1956
    }
1957

    
1958
    if(h->nal_unit_type == NAL_IDR_SLICE){
1959
        get_ue_golomb(&s->gb); /* idr_pic_id */
1960
    }
1961

    
1962
    if(h->sps.poc_type==0){
1963
        h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
1964

    
1965
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
1966
            h->delta_poc_bottom= get_se_golomb(&s->gb);
1967
        }
1968
    }
1969

    
1970
    if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
1971
        h->delta_poc[0]= get_se_golomb(&s->gb);
1972

    
1973
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
1974
            h->delta_poc[1]= get_se_golomb(&s->gb);
1975
    }
1976

    
1977
    init_poc(h);
1978

    
1979
    if(h->pps.redundant_pic_cnt_present){
1980
        h->redundant_pic_count= get_ue_golomb(&s->gb);
1981
    }
1982

    
1983
    //set defaults, might be overridden a few lines later
1984
    h->ref_count[0]= h->pps.ref_count[0];
1985
    h->ref_count[1]= h->pps.ref_count[1];
1986

    
1987
    if(h->slice_type_nos != FF_I_TYPE){
1988
        if(h->slice_type_nos == FF_B_TYPE){
1989
            h->direct_spatial_mv_pred= get_bits1(&s->gb);
1990
        }
1991
        num_ref_idx_active_override_flag= get_bits1(&s->gb);
1992

    
1993
        if(num_ref_idx_active_override_flag){
1994
            h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
1995
            if(h->slice_type_nos==FF_B_TYPE)
1996
                h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
1997

    
1998
            if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
1999
                av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
2000
                h->ref_count[0]= h->ref_count[1]= 1;
2001
                return -1;
2002
            }
2003
        }
2004
        if(h->slice_type_nos == FF_B_TYPE)
2005
            h->list_count= 2;
2006
        else
2007
            h->list_count= 1;
2008
    }else
2009
        h->list_count= 0;
2010

    
2011
    if(!default_ref_list_done){
2012
        ff_h264_fill_default_ref_list(h);
2013
    }
2014

    
2015
    if(h->slice_type_nos!=FF_I_TYPE && ff_h264_decode_ref_pic_list_reordering(h) < 0)
2016
        return -1;
2017

    
2018
    if(h->slice_type_nos!=FF_I_TYPE){
2019
        s->last_picture_ptr= &h->ref_list[0][0];
2020
        ff_copy_picture(&s->last_picture, s->last_picture_ptr);
2021
    }
2022
    if(h->slice_type_nos==FF_B_TYPE){
2023
        s->next_picture_ptr= &h->ref_list[1][0];
2024
        ff_copy_picture(&s->next_picture, s->next_picture_ptr);
2025
    }
2026

    
2027
    if(   (h->pps.weighted_pred          && h->slice_type_nos == FF_P_TYPE )
2028
       ||  (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
2029
        pred_weight_table(h);
2030
    else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE){
2031
        implicit_weight_table(h, -1);
2032
    }else {
2033
        h->use_weight = 0;
2034
        for (i = 0; i < 2; i++) {
2035
            h->luma_weight_flag[i]   = 0;
2036
            h->chroma_weight_flag[i] = 0;
2037
        }
2038
    }
2039

    
2040
    if(h->nal_ref_idc)
2041
        ff_h264_decode_ref_pic_marking(h0, &s->gb);
2042

    
2043
    if(FRAME_MBAFF){
2044
        ff_h264_fill_mbaff_ref_list(h);
2045

    
2046
        if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE){
2047
            implicit_weight_table(h, 0);
2048
            implicit_weight_table(h, 1);
2049
        }
2050
    }
2051

    
2052
    if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
2053
        ff_h264_direct_dist_scale_factor(h);
2054
    ff_h264_direct_ref_list_init(h);
2055

    
2056
    if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
2057
        tmp = get_ue_golomb_31(&s->gb);
2058
        if(tmp > 2){
2059
            av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
2060
            return -1;
2061
        }
2062
        h->cabac_init_idc= tmp;
2063
    }
2064

    
2065
    h->last_qscale_diff = 0;
2066
    tmp = h->pps.init_qp + get_se_golomb(&s->gb);
2067
    if(tmp>51){
2068
        av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
2069
        return -1;
2070
    }
2071
    s->qscale= tmp;
2072
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2073
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2074
    //FIXME qscale / qp ... stuff
2075
    if(h->slice_type == FF_SP_TYPE){
2076
        get_bits1(&s->gb); /* sp_for_switch_flag */
2077
    }
2078
    if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
2079
        get_se_golomb(&s->gb); /* slice_qs_delta */
2080
    }
2081

    
2082
    h->deblocking_filter = 1;
2083
    h->slice_alpha_c0_offset = 52;
2084
    h->slice_beta_offset = 52;
2085
    if( h->pps.deblocking_filter_parameters_present ) {
2086
        tmp= get_ue_golomb_31(&s->gb);
2087
        if(tmp > 2){
2088
            av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
2089
            return -1;
2090
        }
2091
        h->deblocking_filter= tmp;
2092
        if(h->deblocking_filter < 2)
2093
            h->deblocking_filter^= 1; // 1<->0
2094

    
2095
        if( h->deblocking_filter ) {
2096
            h->slice_alpha_c0_offset += get_se_golomb(&s->gb) << 1;
2097
            h->slice_beta_offset     += get_se_golomb(&s->gb) << 1;
2098
            if(   h->slice_alpha_c0_offset > 104U
2099
               || h->slice_beta_offset     > 104U){
2100
                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);
2101
                return -1;
2102
            }
2103
        }
2104
    }
2105

    
2106
    if(   s->avctx->skip_loop_filter >= AVDISCARD_ALL
2107
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
2108
       ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR  && h->slice_type_nos == FF_B_TYPE)
2109
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2110
        h->deblocking_filter= 0;
2111

    
2112
    if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
2113
        if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
2114
            /* Cheat slightly for speed:
2115
               Do not bother to deblock across slices. */
2116
            h->deblocking_filter = 2;
2117
        } else {
2118
            h0->max_contexts = 1;
2119
            if(!h0->single_decode_warning) {
2120
                av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
2121
                h0->single_decode_warning = 1;
2122
            }
2123
            if(h != h0)
2124
                return 1; // deblocking switched inside frame
2125
        }
2126
    }
2127
    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]);
2128

    
2129
#if 0 //FMO
2130
    if( h->pps.num_slice_groups > 1  && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
2131
        slice_group_change_cycle= get_bits(&s->gb, ?);
2132
#endif
2133

    
2134
    h0->last_slice_type = slice_type;
2135
    h->slice_num = ++h0->current_slice;
2136
    if(h->slice_num >= MAX_SLICES){
2137
        av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
2138
    }
2139

    
2140
    for(j=0; j<2; j++){
2141
        int id_list[16];
2142
        int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
2143
        for(i=0; i<16; i++){
2144
            id_list[i]= 60;
2145
            if(h->ref_list[j][i].data[0]){
2146
                int k;
2147
                uint8_t *base= h->ref_list[j][i].base[0];
2148
                for(k=0; k<h->short_ref_count; k++)
2149
                    if(h->short_ref[k]->base[0] == base){
2150
                        id_list[i]= k;
2151
                        break;
2152
                    }
2153
                for(k=0; k<h->long_ref_count; k++)
2154
                    if(h->long_ref[k] && h->long_ref[k]->base[0] == base){
2155
                        id_list[i]= h->short_ref_count + k;
2156
                        break;
2157
                    }
2158
            }
2159
        }
2160

    
2161
        ref2frm[0]=
2162
        ref2frm[1]= -1;
2163
        for(i=0; i<16; i++)
2164
            ref2frm[i+2]= 4*id_list[i]
2165
                          +(h->ref_list[j][i].reference&3);
2166
        ref2frm[18+0]=
2167
        ref2frm[18+1]= -1;
2168
        for(i=16; i<48; i++)
2169
            ref2frm[i+4]= 4*id_list[(i-16)>>1]
2170
                          +(h->ref_list[j][i].reference&3);
2171
    }
2172

    
2173
    h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
2174
    h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
2175

    
2176
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
2177
        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",
2178
               h->slice_num,
2179
               (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
2180
               first_mb_in_slice,
2181
               av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
2182
               pps_id, h->frame_num,
2183
               s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
2184
               h->ref_count[0], h->ref_count[1],
2185
               s->qscale,
2186
               h->deblocking_filter, h->slice_alpha_c0_offset/2-26, h->slice_beta_offset/2-26,
2187
               h->use_weight,
2188
               h->use_weight==1 && h->use_weight_chroma ? "c" : "",
2189
               h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
2190
               );
2191
    }
2192

    
2193
    return 0;
2194
}
2195

    
2196
int ff_h264_get_slice_type(const H264Context *h)
2197
{
2198
    switch (h->slice_type) {
2199
    case FF_P_TYPE:  return 0;
2200
    case FF_B_TYPE:  return 1;
2201
    case FF_I_TYPE:  return 2;
2202
    case FF_SP_TYPE: return 3;
2203
    case FF_SI_TYPE: return 4;
2204
    default:         return -1;
2205
    }
2206
}
2207

    
2208
/**
2209
 *
2210
 * @return non zero if the loop filter can be skiped
2211
 */
2212
static int fill_filter_caches(H264Context *h, int mb_type){
2213
    MpegEncContext * const s = &h->s;
2214
    const int mb_xy= h->mb_xy;
2215
    int top_xy, left_xy[2];
2216
    int top_type, left_type[2];
2217

    
2218
    top_xy     = mb_xy  - (s->mb_stride << MB_FIELD);
2219

    
2220
    //FIXME deblocking could skip the intra and nnz parts.
2221

    
2222
    /* Wow, what a mess, why didn't they simplify the interlacing & intra
2223
     * stuff, I can't imagine that these complex rules are worth it. */
2224

    
2225
    left_xy[1] = left_xy[0] = mb_xy-1;
2226
    if(FRAME_MBAFF){
2227
        const int left_mb_field_flag     = IS_INTERLACED(s->current_picture.mb_type[mb_xy-1]);
2228
        const int curr_mb_field_flag     = IS_INTERLACED(mb_type);
2229
        if(s->mb_y&1){
2230
            if (left_mb_field_flag != curr_mb_field_flag) {
2231
                left_xy[0] -= s->mb_stride;
2232
            }
2233
        }else{
2234
            if(curr_mb_field_flag){
2235
                top_xy      += s->mb_stride & (((s->current_picture.mb_type[top_xy    ]>>7)&1)-1);
2236
            }
2237
            if (left_mb_field_flag != curr_mb_field_flag) {
2238
                left_xy[1] += s->mb_stride;
2239
            }
2240
        }
2241
    }
2242

    
2243
    h->top_mb_xy = top_xy;
2244
    h->left_mb_xy[0] = left_xy[0];
2245
    h->left_mb_xy[1] = left_xy[1];
2246
    {
2247
        //for sufficiently low qp, filtering wouldn't do anything
2248
        //this is a conservative estimate: could also check beta_offset and more accurate chroma_qp
2249
        int qp_thresh = h->qp_thresh; //FIXME strictly we should store qp_thresh for each mb of a slice
2250
        int qp = s->current_picture.qscale_table[mb_xy];
2251
        if(qp <= qp_thresh
2252
           && (left_xy[0]<0 || ((qp + s->current_picture.qscale_table[left_xy[0]] + 1)>>1) <= qp_thresh)
2253
           && (top_xy   < 0 || ((qp + s->current_picture.qscale_table[top_xy    ] + 1)>>1) <= qp_thresh)){
2254
            if(!FRAME_MBAFF)
2255
                return 1;
2256
            if(   (left_xy[0]< 0            || ((qp + s->current_picture.qscale_table[left_xy[1]             ] + 1)>>1) <= qp_thresh)
2257
               && (top_xy    < s->mb_stride || ((qp + s->current_picture.qscale_table[top_xy    -s->mb_stride] + 1)>>1) <= qp_thresh))
2258
                return 1;
2259
        }
2260
    }
2261

    
2262
    top_type     = s->current_picture.mb_type[top_xy]    ;
2263
    left_type[0] = s->current_picture.mb_type[left_xy[0]];
2264
    left_type[1] = s->current_picture.mb_type[left_xy[1]];
2265
    if(h->deblocking_filter == 2){
2266
        if(h->slice_table[top_xy     ] != h->slice_num) top_type= 0;
2267
        if(h->slice_table[left_xy[0] ] != h->slice_num) left_type[0]= left_type[1]= 0;
2268
    }else{
2269
        if(h->slice_table[top_xy     ] == 0xFFFF) top_type= 0;
2270
        if(h->slice_table[left_xy[0] ] == 0xFFFF) left_type[0]= left_type[1] =0;
2271
    }
2272
    h->top_type    = top_type    ;
2273
    h->left_type[0]= left_type[0];
2274
    h->left_type[1]= left_type[1];
2275

    
2276
    if(IS_INTRA(mb_type))
2277
        return 0;
2278

    
2279
    AV_COPY64(&h->non_zero_count_cache[0+8*1], &h->non_zero_count[mb_xy][ 0]);
2280
    AV_COPY64(&h->non_zero_count_cache[0+8*2], &h->non_zero_count[mb_xy][ 8]);
2281
    AV_COPY32(&h->non_zero_count_cache[0+8*5], &h->non_zero_count[mb_xy][16]);
2282
    AV_COPY32(&h->non_zero_count_cache[4+8*3], &h->non_zero_count[mb_xy][20]);
2283
    AV_COPY64(&h->non_zero_count_cache[0+8*4], &h->non_zero_count[mb_xy][24]);
2284

    
2285
    h->cbp= h->cbp_table[mb_xy];
2286

    
2287
    {
2288
        int list;
2289
        for(list=0; list<h->list_count; list++){
2290
            int8_t *ref;
2291
            int y, b_stride;
2292
            int16_t (*mv_dst)[2];
2293
            int16_t (*mv_src)[2];
2294

    
2295
            if(!USES_LIST(mb_type, list)){
2296
                fill_rectangle(  h->mv_cache[list][scan8[0]], 4, 4, 8, pack16to32(0,0), 4);
2297
                AV_WN32A(&h->ref_cache[list][scan8[ 0]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2298
                AV_WN32A(&h->ref_cache[list][scan8[ 2]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2299
                AV_WN32A(&h->ref_cache[list][scan8[ 8]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2300
                AV_WN32A(&h->ref_cache[list][scan8[10]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2301
                continue;
2302
            }
2303

    
2304
            ref = &s->current_picture.ref_index[list][4*mb_xy];
2305
            {
2306
                int (*ref2frm)[64] = h->ref2frm[ h->slice_num&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2307
                AV_WN32A(&h->ref_cache[list][scan8[ 0]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2308
                AV_WN32A(&h->ref_cache[list][scan8[ 2]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2309
                ref += 2;
2310
                AV_WN32A(&h->ref_cache[list][scan8[ 8]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2311
                AV_WN32A(&h->ref_cache[list][scan8[10]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2312
            }
2313

    
2314
            b_stride = h->b_stride;
2315
            mv_dst   = &h->mv_cache[list][scan8[0]];
2316
            mv_src   = &s->current_picture.motion_val[list][4*s->mb_x + 4*s->mb_y*b_stride];
2317
            for(y=0; y<4; y++){
2318
                AV_COPY128(mv_dst + 8*y, mv_src + y*b_stride);
2319
            }
2320

    
2321
        }
2322
    }
2323

    
2324

    
2325
/*
2326
0 . T T. T T T T
2327
1 L . .L . . . .
2328
2 L . .L . . . .
2329
3 . T TL . . . .
2330
4 L . .L . . . .
2331
5 L . .. . . . .
2332
*/
2333
//FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
2334
    if(top_type){
2335
        AV_COPY32(&h->non_zero_count_cache[4+8*0], &h->non_zero_count[top_xy][4+3*8]);
2336
    }
2337

    
2338
    if(left_type[0]){
2339
        h->non_zero_count_cache[3+8*1]= h->non_zero_count[left_xy[0]][7+0*8];
2340
        h->non_zero_count_cache[3+8*2]= h->non_zero_count[left_xy[0]][7+1*8];
2341
        h->non_zero_count_cache[3+8*3]= h->non_zero_count[left_xy[0]][7+2*8];
2342
        h->non_zero_count_cache[3+8*4]= h->non_zero_count[left_xy[0]][7+3*8];
2343
    }
2344

    
2345
    // CAVLC 8x8dct requires NNZ values for residual decoding that differ from what the loop filter needs
2346
    if(!CABAC && h->pps.transform_8x8_mode){
2347
        if(IS_8x8DCT(top_type)){
2348
            h->non_zero_count_cache[4+8*0]=
2349
            h->non_zero_count_cache[5+8*0]= h->cbp_table[top_xy] & 4;
2350
            h->non_zero_count_cache[6+8*0]=
2351
            h->non_zero_count_cache[7+8*0]= h->cbp_table[top_xy] & 8;
2352
        }
2353
        if(IS_8x8DCT(left_type[0])){
2354
            h->non_zero_count_cache[3+8*1]=
2355
            h->non_zero_count_cache[3+8*2]= h->cbp_table[left_xy[0]]&2; //FIXME check MBAFF
2356
        }
2357
        if(IS_8x8DCT(left_type[1])){
2358
            h->non_zero_count_cache[3+8*3]=
2359
            h->non_zero_count_cache[3+8*4]= h->cbp_table[left_xy[1]]&8; //FIXME check MBAFF
2360
        }
2361

    
2362
        if(IS_8x8DCT(mb_type)){
2363
            h->non_zero_count_cache[scan8[0   ]]= h->non_zero_count_cache[scan8[1   ]]=
2364
            h->non_zero_count_cache[scan8[2   ]]= h->non_zero_count_cache[scan8[3   ]]= h->cbp & 1;
2365

    
2366
            h->non_zero_count_cache[scan8[0+ 4]]= h->non_zero_count_cache[scan8[1+ 4]]=
2367
            h->non_zero_count_cache[scan8[2+ 4]]= h->non_zero_count_cache[scan8[3+ 4]]= h->cbp & 2;
2368

    
2369
            h->non_zero_count_cache[scan8[0+ 8]]= h->non_zero_count_cache[scan8[1+ 8]]=
2370
            h->non_zero_count_cache[scan8[2+ 8]]= h->non_zero_count_cache[scan8[3+ 8]]= h->cbp & 4;
2371

    
2372
            h->non_zero_count_cache[scan8[0+12]]= h->non_zero_count_cache[scan8[1+12]]=
2373
            h->non_zero_count_cache[scan8[2+12]]= h->non_zero_count_cache[scan8[3+12]]= h->cbp & 8;
2374
        }
2375
    }
2376

    
2377
    if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
2378
        int list;
2379
        for(list=0; list<h->list_count; list++){
2380
            if(USES_LIST(top_type, list)){
2381
                const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
2382
                const int b8_xy= 4*top_xy + 2;
2383
                int (*ref2frm)[64] = h->ref2frm[ h->slice_table[top_xy]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2384
                AV_COPY128(h->mv_cache[list][scan8[0] + 0 - 1*8], s->current_picture.motion_val[list][b_xy + 0]);
2385
                h->ref_cache[list][scan8[0] + 0 - 1*8]=
2386
                h->ref_cache[list][scan8[0] + 1 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 0]];
2387
                h->ref_cache[list][scan8[0] + 2 - 1*8]=
2388
                h->ref_cache[list][scan8[0] + 3 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 1]];
2389
            }else{
2390
                AV_ZERO128(h->mv_cache[list][scan8[0] + 0 - 1*8]);
2391
                AV_WN32A(&h->ref_cache[list][scan8[0] + 0 - 1*8], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2392
            }
2393

    
2394
            if(!IS_INTERLACED(mb_type^left_type[0])){
2395
                if(USES_LIST(left_type[0], list)){
2396
                    const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
2397
                    const int b8_xy= 4*left_xy[0] + 1;
2398
                    int (*ref2frm)[64] = h->ref2frm[ h->slice_table[left_xy[0]]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2399
                    AV_COPY32(h->mv_cache[list][scan8[0] - 1 + 0 ], s->current_picture.motion_val[list][b_xy + h->b_stride*0]);
2400
                    AV_COPY32(h->mv_cache[list][scan8[0] - 1 + 8 ], s->current_picture.motion_val[list][b_xy + h->b_stride*1]);
2401
                    AV_COPY32(h->mv_cache[list][scan8[0] - 1 +16 ], s->current_picture.motion_val[list][b_xy + h->b_stride*2]);
2402
                    AV_COPY32(h->mv_cache[list][scan8[0] - 1 +24 ], s->current_picture.motion_val[list][b_xy + h->b_stride*3]);
2403
                    h->ref_cache[list][scan8[0] - 1 + 0 ]=
2404
                    h->ref_cache[list][scan8[0] - 1 + 8 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 2*0]];
2405
                    h->ref_cache[list][scan8[0] - 1 +16 ]=
2406
                    h->ref_cache[list][scan8[0] - 1 +24 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 2*1]];
2407
                }else{
2408
                    AV_ZERO32(h->mv_cache [list][scan8[0] - 1 + 0 ]);
2409
                    AV_ZERO32(h->mv_cache [list][scan8[0] - 1 + 8 ]);
2410
                    AV_ZERO32(h->mv_cache [list][scan8[0] - 1 +16 ]);
2411
                    AV_ZERO32(h->mv_cache [list][scan8[0] - 1 +24 ]);
2412
                    h->ref_cache[list][scan8[0] - 1 + 0  ]=
2413
                    h->ref_cache[list][scan8[0] - 1 + 8  ]=
2414
                    h->ref_cache[list][scan8[0] - 1 + 16 ]=
2415
                    h->ref_cache[list][scan8[0] - 1 + 24 ]= LIST_NOT_USED;
2416
                }
2417
            }
2418
        }
2419
    }
2420

    
2421
    return 0;
2422
}
2423

    
2424
static void loop_filter(H264Context *h){
2425
    MpegEncContext * const s = &h->s;
2426
    uint8_t  *dest_y, *dest_cb, *dest_cr;
2427
    int linesize, uvlinesize, mb_x, mb_y;
2428
    const int end_mb_y= s->mb_y + FRAME_MBAFF;
2429
    const int old_slice_type= h->slice_type;
2430

    
2431
    if(h->deblocking_filter) {
2432
        for(mb_x= 0; mb_x<s->mb_width; mb_x++){
2433
            for(mb_y=end_mb_y - FRAME_MBAFF; mb_y<= end_mb_y; mb_y++){
2434
                int mb_xy, mb_type;
2435
                mb_xy = h->mb_xy = mb_x + mb_y*s->mb_stride;
2436
                h->slice_num= h->slice_table[mb_xy];
2437
                mb_type= s->current_picture.mb_type[mb_xy];
2438
                h->list_count= h->list_counts[mb_xy];
2439

    
2440
                if(FRAME_MBAFF)
2441
                    h->mb_mbaff = h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2442

    
2443
                s->mb_x= mb_x;
2444
                s->mb_y= mb_y;
2445
                dest_y  = s->current_picture.data[0] + (mb_x + mb_y * s->linesize  ) * 16;
2446
                dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
2447
                dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
2448
                    //FIXME simplify above
2449

    
2450
                if (MB_FIELD) {
2451
                    linesize   = h->mb_linesize   = s->linesize * 2;
2452
                    uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2453
                    if(mb_y&1){ //FIXME move out of this function?
2454
                        dest_y -= s->linesize*15;
2455
                        dest_cb-= s->uvlinesize*7;
2456
                        dest_cr-= s->uvlinesize*7;
2457
                    }
2458
                } else {
2459
                    linesize   = h->mb_linesize   = s->linesize;
2460
                    uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2461
                }
2462
                backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0);
2463
                if(fill_filter_caches(h, mb_type))
2464
                    continue;
2465
                h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2466
                h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2467

    
2468
                if (FRAME_MBAFF) {
2469
                    ff_h264_filter_mb     (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2470
                } else {
2471
                    ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2472
                }
2473
            }
2474
        }
2475
    }
2476
    h->slice_type= old_slice_type;
2477
    s->mb_x= 0;
2478
    s->mb_y= end_mb_y - FRAME_MBAFF;
2479
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2480
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2481
}
2482

    
2483
static void predict_field_decoding_flag(H264Context *h){
2484
    MpegEncContext * const s = &h->s;
2485
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2486
    int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
2487
                ? s->current_picture.mb_type[mb_xy-1]
2488
                : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
2489
                ? s->current_picture.mb_type[mb_xy-s->mb_stride]
2490
                : 0;
2491
    h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2492
}
2493

    
2494
static int decode_slice(struct AVCodecContext *avctx, void *arg){
2495
    H264Context *h = *(void**)arg;
2496
    MpegEncContext * const s = &h->s;
2497
    const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
2498

    
2499
    s->mb_skip_run= -1;
2500

    
2501
    h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
2502
                    (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
2503

    
2504
    if( h->pps.cabac ) {
2505
        /* realign */
2506
        align_get_bits( &s->gb );
2507

    
2508
        /* init cabac */
2509
        ff_init_cabac_states( &h->cabac);
2510
        ff_init_cabac_decoder( &h->cabac,
2511
                               s->gb.buffer + get_bits_count(&s->gb)/8,
2512
                               (get_bits_left(&s->gb) + 7)/8);
2513

    
2514
        ff_h264_init_cabac_states(h);
2515

    
2516
        for(;;){
2517
//START_TIMER
2518
            int ret = ff_h264_decode_mb_cabac(h);
2519
            int eos;
2520
//STOP_TIMER("decode_mb_cabac")
2521

    
2522
            if(ret>=0) ff_h264_hl_decode_mb(h);
2523

    
2524
            if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
2525
                s->mb_y++;
2526

    
2527
                ret = ff_h264_decode_mb_cabac(h);
2528

    
2529
                if(ret>=0) ff_h264_hl_decode_mb(h);
2530
                s->mb_y--;
2531
            }
2532
            eos = get_cabac_terminate( &h->cabac );
2533

    
2534
            if((s->workaround_bugs & FF_BUG_TRUNCATED) && h->cabac.bytestream > h->cabac.bytestream_end + 2){
2535
                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);
2536
                return 0;
2537
            }
2538
            if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
2539
                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);
2540
                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);
2541
                return -1;
2542
            }
2543

    
2544
            if( ++s->mb_x >= s->mb_width ) {
2545
                s->mb_x = 0;
2546
                loop_filter(h);
2547
                ff_draw_horiz_band(s, 16*s->mb_y, 16);
2548
                ++s->mb_y;
2549
                if(FIELD_OR_MBAFF_PICTURE) {
2550
                    ++s->mb_y;
2551
                    if(FRAME_MBAFF && s->mb_y < s->mb_height)
2552
                        predict_field_decoding_flag(h);
2553
                }
2554
            }
2555

    
2556
            if( eos || s->mb_y >= s->mb_height ) {
2557
                tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2558
                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);
2559
                return 0;
2560
            }
2561
        }
2562

    
2563
    } else {
2564
        for(;;){
2565
            int ret = ff_h264_decode_mb_cavlc(h);
2566

    
2567
            if(ret>=0) ff_h264_hl_decode_mb(h);
2568

    
2569
            if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
2570
                s->mb_y++;
2571
                ret = ff_h264_decode_mb_cavlc(h);
2572

    
2573
                if(ret>=0) ff_h264_hl_decode_mb(h);
2574
                s->mb_y--;
2575
            }
2576

    
2577
            if(ret<0){
2578
                av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2579
                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);
2580

    
2581
                return -1;
2582
            }
2583

    
2584
            if(++s->mb_x >= s->mb_width){
2585
                s->mb_x=0;
2586
                loop_filter(h);
2587
                ff_draw_horiz_band(s, 16*s->mb_y, 16);
2588
                ++s->mb_y;
2589
                if(FIELD_OR_MBAFF_PICTURE) {
2590
                    ++s->mb_y;
2591
                    if(FRAME_MBAFF && s->mb_y < s->mb_height)
2592
                        predict_field_decoding_flag(h);
2593
                }
2594
                if(s->mb_y >= s->mb_height){
2595
                    tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2596

    
2597
                    if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
2598
                        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);
2599

    
2600
                        return 0;
2601
                    }else{
2602
                        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);
2603

    
2604
                        return -1;
2605
                    }
2606
                }
2607
            }
2608

    
2609
            if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
2610
                tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2611
                if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
2612
                    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);
2613

    
2614
                    return 0;
2615
                }else{
2616
                    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);
2617

    
2618
                    return -1;
2619
                }
2620
            }
2621
        }
2622
    }
2623

    
2624
#if 0
2625
    for(;s->mb_y < s->mb_height; s->mb_y++){
2626
        for(;s->mb_x < s->mb_width; s->mb_x++){
2627
            int ret= decode_mb(h);
2628

2629
            ff_h264_hl_decode_mb(h);
2630

2631
            if(ret<0){
2632
                av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2633
                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);
2634

2635
                return -1;
2636
            }
2637

2638
            if(++s->mb_x >= s->mb_width){
2639
                s->mb_x=0;
2640
                if(++s->mb_y >= s->mb_height){
2641
                    if(get_bits_count(s->gb) == s->gb.size_in_bits){
2642
                        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);
2643

2644
                        return 0;
2645
                    }else{
2646
                        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);
2647

2648
                        return -1;
2649
                    }
2650
                }
2651
            }
2652

2653
            if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
2654
                if(get_bits_count(s->gb) == s->gb.size_in_bits){
2655
                    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);
2656

2657
                    return 0;
2658
                }else{
2659
                    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);
2660

2661
                    return -1;
2662
                }
2663
            }
2664
        }
2665
        s->mb_x=0;
2666
        ff_draw_horiz_band(s, 16*s->mb_y, 16);
2667
    }
2668
#endif
2669
    return -1; //not reached
2670
}
2671

    
2672
/**
2673
 * Call decode_slice() for each context.
2674
 *
2675
 * @param h h264 master context
2676
 * @param context_count number of contexts to execute
2677
 */
2678
static void execute_decode_slices(H264Context *h, int context_count){
2679
    MpegEncContext * const s = &h->s;
2680
    AVCodecContext * const avctx= s->avctx;
2681
    H264Context *hx;
2682
    int i;
2683

    
2684
    if (s->avctx->hwaccel)
2685
        return;
2686
    if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2687
        return;
2688
    if(context_count == 1) {
2689
        decode_slice(avctx, &h);
2690
    } else {
2691
        for(i = 1; i < context_count; i++) {
2692
            hx = h->thread_context[i];
2693
            hx->s.error_recognition = avctx->error_recognition;
2694
            hx->s.error_count = 0;
2695
        }
2696

    
2697
        avctx->execute(avctx, (void *)decode_slice,
2698
                       h->thread_context, NULL, context_count, sizeof(void*));
2699

    
2700
        /* pull back stuff from slices to master context */
2701
        hx = h->thread_context[context_count - 1];
2702
        s->mb_x = hx->s.mb_x;
2703
        s->mb_y = hx->s.mb_y;
2704
        s->dropable = hx->s.dropable;
2705
        s->picture_structure = hx->s.picture_structure;
2706
        for(i = 1; i < context_count; i++)
2707
            h->s.error_count += h->thread_context[i]->s.error_count;
2708
    }
2709
}
2710

    
2711

    
2712
static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
2713
    MpegEncContext * const s = &h->s;
2714
    AVCodecContext * const avctx= s->avctx;
2715
    int buf_index=0;
2716
    H264Context *hx; ///< thread context
2717
    int context_count = 0;
2718
    int next_avc= h->is_avc ? 0 : buf_size;
2719

    
2720
    h->max_contexts = avctx->thread_count;
2721
#if 0
2722
    int i;
2723
    for(i=0; i<50; i++){
2724
        av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]);
2725
    }
2726
#endif
2727
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
2728
        h->current_slice = 0;
2729
        if (!s->first_field)
2730
            s->current_picture_ptr= NULL;
2731
        ff_h264_reset_sei(h);
2732
    }
2733

    
2734
    for(;;){
2735
        int consumed;
2736
        int dst_length;
2737
        int bit_length;
2738
        const uint8_t *ptr;
2739
        int i, nalsize = 0;
2740
        int err;
2741

    
2742
        if(buf_index >= next_avc) {
2743
            if(buf_index >= buf_size) break;
2744
            nalsize = 0;
2745
            for(i = 0; i < h->nal_length_size; i++)
2746
                nalsize = (nalsize << 8) | buf[buf_index++];
2747
            if(nalsize <= 0 || nalsize > buf_size - buf_index){
2748
                av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
2749
                break;
2750
            }
2751
            next_avc= buf_index + nalsize;
2752
        } else {
2753
            // start code prefix search
2754
            for(; buf_index + 3 < next_avc; buf_index++){
2755
                // This should always succeed in the first iteration.
2756
                if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
2757
                    break;
2758
            }
2759

    
2760
            if(buf_index+3 >= buf_size) break;
2761

    
2762
            buf_index+=3;
2763
            if(buf_index >= next_avc) continue;
2764
        }
2765

    
2766
        hx = h->thread_context[context_count];
2767

    
2768
        ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, next_avc - buf_index);
2769
        if (ptr==NULL || dst_length < 0){
2770
            return -1;
2771
        }
2772
        i= buf_index + consumed;
2773
        if((s->workaround_bugs & FF_BUG_AUTODETECT) && i+3<next_avc &&
2774
           buf[i]==0x00 && buf[i+1]==0x00 && buf[i+2]==0x01 && buf[i+3]==0xE0)
2775
            s->workaround_bugs |= FF_BUG_TRUNCATED;
2776

    
2777
        if(!(s->workaround_bugs & FF_BUG_TRUNCATED)){
2778
        while(ptr[dst_length - 1] == 0 && dst_length > 0)
2779
            dst_length--;
2780
        }
2781
        bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
2782

    
2783
        if(s->avctx->debug&FF_DEBUG_STARTCODE){
2784
            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);
2785
        }
2786

    
2787
        if (h->is_avc && (nalsize != consumed) && nalsize){
2788
            av_log(h->s.avctx, AV_LOG_DEBUG, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize);
2789
        }
2790

    
2791
        buf_index += consumed;
2792

    
2793
        if(  (s->hurry_up == 1 && h->nal_ref_idc  == 0) //FIXME do not discard SEI id
2794
           ||(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc  == 0))
2795
            continue;
2796

    
2797
      again:
2798
        err = 0;
2799
        switch(hx->nal_unit_type){
2800
        case NAL_IDR_SLICE:
2801
            if (h->nal_unit_type != NAL_IDR_SLICE) {
2802
                av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
2803
                return -1;
2804
            }
2805
            idr(h); //FIXME ensure we don't loose some frames if there is reordering
2806
        case NAL_SLICE:
2807
            init_get_bits(&hx->s.gb, ptr, bit_length);
2808
            hx->intra_gb_ptr=
2809
            hx->inter_gb_ptr= &hx->s.gb;
2810
            hx->s.data_partitioning = 0;
2811

    
2812
            if((err = decode_slice_header(hx, h)))
2813
               break;
2814

    
2815
            if (h->current_slice == 1) {
2816
                if (s->avctx->hwaccel && s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
2817
                    return -1;
2818
                if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2819
                    ff_vdpau_h264_picture_start(s);
2820
            }
2821

    
2822
            s->current_picture_ptr->key_frame |=
2823
                    (hx->nal_unit_type == NAL_IDR_SLICE) ||
2824
                    (h->sei_recovery_frame_cnt >= 0);
2825
            if(hx->redundant_pic_count==0 && hx->s.hurry_up < 5
2826
               && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2827
               && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
2828
               && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2829
               && avctx->skip_frame < AVDISCARD_ALL){
2830
                if(avctx->hwaccel) {
2831
                    if (avctx->hwaccel->decode_slice(avctx, &buf[buf_index - consumed], consumed) < 0)
2832
                        return -1;
2833
                }else
2834
                if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
2835
                    static const uint8_t start_code[] = {0x00, 0x00, 0x01};
2836
                    ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code));
2837
                    ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed );
2838
                }else
2839
                    context_count++;
2840
            }
2841
            break;
2842
        case NAL_DPA:
2843
            init_get_bits(&hx->s.gb, ptr, bit_length);
2844
            hx->intra_gb_ptr=
2845
            hx->inter_gb_ptr= NULL;
2846

    
2847
            if ((err = decode_slice_header(hx, h)) < 0)
2848
                break;
2849

    
2850
            hx->s.data_partitioning = 1;
2851

    
2852
            break;
2853
        case NAL_DPB:
2854
            init_get_bits(&hx->intra_gb, ptr, bit_length);
2855
            hx->intra_gb_ptr= &hx->intra_gb;
2856
            break;
2857
        case NAL_DPC:
2858
            init_get_bits(&hx->inter_gb, ptr, bit_length);
2859
            hx->inter_gb_ptr= &hx->inter_gb;
2860

    
2861
            if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
2862
               && s->context_initialized
2863
               && s->hurry_up < 5
2864
               && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2865
               && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
2866
               && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2867
               && avctx->skip_frame < AVDISCARD_ALL)
2868
                context_count++;
2869
            break;
2870
        case NAL_SEI:
2871
            init_get_bits(&s->gb, ptr, bit_length);
2872
            ff_h264_decode_sei(h);
2873
            break;
2874
        case NAL_SPS:
2875
            init_get_bits(&s->gb, ptr, bit_length);
2876
            ff_h264_decode_seq_parameter_set(h);
2877

    
2878
            if(s->flags& CODEC_FLAG_LOW_DELAY)
2879
                s->low_delay=1;
2880

    
2881
            if(avctx->has_b_frames < 2)
2882
                avctx->has_b_frames= !s->low_delay;
2883
            break;
2884
        case NAL_PPS:
2885
            init_get_bits(&s->gb, ptr, bit_length);
2886

    
2887
            ff_h264_decode_picture_parameter_set(h, bit_length);
2888

    
2889
            break;
2890
        case NAL_AUD:
2891
        case NAL_END_SEQUENCE:
2892
        case NAL_END_STREAM:
2893
        case NAL_FILLER_DATA:
2894
        case NAL_SPS_EXT:
2895
        case NAL_AUXILIARY_SLICE:
2896
            break;
2897
        default:
2898
            av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", hx->nal_unit_type, bit_length);
2899
        }
2900

    
2901
        if(context_count == h->max_contexts) {
2902
            execute_decode_slices(h, context_count);
2903
            context_count = 0;
2904
        }
2905

    
2906
        if (err < 0)
2907
            av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
2908
        else if(err == 1) {
2909
            /* Slice could not be decoded in parallel mode, copy down
2910
             * NAL unit stuff to context 0 and restart. Note that
2911
             * rbsp_buffer is not transferred, but since we no longer
2912
             * run in parallel mode this should not be an issue. */
2913
            h->nal_unit_type = hx->nal_unit_type;
2914
            h->nal_ref_idc   = hx->nal_ref_idc;
2915
            hx = h;
2916
            goto again;
2917
        }
2918
    }
2919
    if(context_count)
2920
        execute_decode_slices(h, context_count);
2921
    return buf_index;
2922
}
2923

    
2924
/**
2925
 * returns the number of bytes consumed for building the current frame
2926
 */
2927
static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
2928
        if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
2929
        if(pos+10>buf_size) pos=buf_size; // oops ;)
2930

    
2931
        return pos;
2932
}
2933

    
2934
static int decode_frame(AVCodecContext *avctx,
2935
                             void *data, int *data_size,
2936
                             AVPacket *avpkt)
2937
{
2938
    const uint8_t *buf = avpkt->data;
2939
    int buf_size = avpkt->size;
2940
    H264Context *h = avctx->priv_data;
2941
    MpegEncContext *s = &h->s;
2942
    AVFrame *pict = data;
2943
    int buf_index;
2944

    
2945
    s->flags= avctx->flags;
2946
    s->flags2= avctx->flags2;
2947

    
2948
   /* end of stream, output what is still in the buffers */
2949
 out:
2950
    if (buf_size == 0) {
2951
        Picture *out;
2952
        int i, out_idx;
2953

    
2954
//FIXME factorize this with the output code below
2955
        out = h->delayed_pic[0];
2956
        out_idx = 0;
2957
        for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2958
            if(h->delayed_pic[i]->poc < out->poc){
2959
                out = h->delayed_pic[i];
2960
                out_idx = i;
2961
            }
2962

    
2963
        for(i=out_idx; h->delayed_pic[i]; i++)
2964
            h->delayed_pic[i] = h->delayed_pic[i+1];
2965

    
2966
        if(out){
2967
            *data_size = sizeof(AVFrame);
2968
            *pict= *(AVFrame*)out;
2969
        }
2970

    
2971
        return 0;
2972
    }
2973

    
2974
    buf_index=decode_nal_units(h, buf, buf_size);
2975
    if(buf_index < 0)
2976
        return -1;
2977

    
2978
    if (!s->current_picture_ptr && h->nal_unit_type == NAL_END_SEQUENCE) {
2979
        buf_size = 0;
2980
        goto out;
2981
    }
2982

    
2983
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
2984
        if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0;
2985
        av_log(avctx, AV_LOG_ERROR, "no frame!\n");
2986
        return -1;
2987
    }
2988

    
2989
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){
2990
        Picture *out = s->current_picture_ptr;
2991
        Picture *cur = s->current_picture_ptr;
2992
        int i, pics, out_of_order, out_idx;
2993

    
2994
        field_end(h);
2995

    
2996
        if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) {
2997
            /* Wait for second field. */
2998
            *data_size = 0;
2999

    
3000
        } else {
3001
            cur->interlaced_frame = 0;
3002
            cur->repeat_pict = 0;
3003

    
3004
            /* Signal interlacing information externally. */
3005
            /* Prioritize picture timing SEI information over used decoding process if it exists. */
3006

    
3007
            if(h->sps.pic_struct_present_flag){
3008
                switch (h->sei_pic_struct)
3009
                {
3010
                case SEI_PIC_STRUCT_FRAME:
3011
                    break;
3012
                case SEI_PIC_STRUCT_TOP_FIELD:
3013
                case SEI_PIC_STRUCT_BOTTOM_FIELD:
3014
                    cur->interlaced_frame = 1;
3015
                    break;
3016
                case SEI_PIC_STRUCT_TOP_BOTTOM:
3017
                case SEI_PIC_STRUCT_BOTTOM_TOP:
3018
                    if (FIELD_OR_MBAFF_PICTURE)
3019
                        cur->interlaced_frame = 1;
3020
                    else
3021
                        // try to flag soft telecine progressive
3022
                        cur->interlaced_frame = h->prev_interlaced_frame;
3023
                    break;
3024
                case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
3025
                case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
3026
                    // Signal the possibility of telecined film externally (pic_struct 5,6)
3027
                    // From these hints, let the applications decide if they apply deinterlacing.
3028
                    cur->repeat_pict = 1;
3029
                    break;
3030
                case SEI_PIC_STRUCT_FRAME_DOUBLING:
3031
                    // Force progressive here, as doubling interlaced frame is a bad idea.
3032
                    cur->repeat_pict = 2;
3033
                    break;
3034
                case SEI_PIC_STRUCT_FRAME_TRIPLING:
3035
                    cur->repeat_pict = 4;
3036
                    break;
3037
                }
3038

    
3039
                if ((h->sei_ct_type & 3) && h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
3040
                    cur->interlaced_frame = (h->sei_ct_type & (1<<1)) != 0;
3041
            }else{
3042
                /* Derive interlacing flag from used decoding process. */
3043
                cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE;
3044
            }
3045
            h->prev_interlaced_frame = cur->interlaced_frame;
3046

    
3047
            if (cur->field_poc[0] != cur->field_poc[1]){
3048
                /* Derive top_field_first from field pocs. */
3049
                cur->top_field_first = cur->field_poc[0] < cur->field_poc[1];
3050
            }else{
3051
                if(cur->interlaced_frame || h->sps.pic_struct_present_flag){
3052
                    /* Use picture timing SEI information. Even if it is a information of a past frame, better than nothing. */
3053
                    if(h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM
3054
                      || h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
3055
                        cur->top_field_first = 1;
3056
                    else
3057
                        cur->top_field_first = 0;
3058
                }else{
3059
                    /* Most likely progressive */
3060
                    cur->top_field_first = 0;
3061
                }
3062
            }
3063

    
3064
        //FIXME do something with unavailable reference frames
3065

    
3066
            /* Sort B-frames into display order */
3067

    
3068
            if(h->sps.bitstream_restriction_flag
3069
               && s->avctx->has_b_frames < h->sps.num_reorder_frames){
3070
                s->avctx->has_b_frames = h->sps.num_reorder_frames;
3071
                s->low_delay = 0;
3072
            }
3073

    
3074
            if(   s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT
3075
               && !h->sps.bitstream_restriction_flag){
3076
                s->avctx->has_b_frames= MAX_DELAYED_PIC_COUNT;
3077
                s->low_delay= 0;
3078
            }
3079

    
3080
            pics = 0;
3081
            while(h->delayed_pic[pics]) pics++;
3082

    
3083
            assert(pics <= MAX_DELAYED_PIC_COUNT);
3084

    
3085
            h->delayed_pic[pics++] = cur;
3086
            if(cur->reference == 0)
3087
                cur->reference = DELAYED_PIC_REF;
3088

    
3089
            out = h->delayed_pic[0];
3090
            out_idx = 0;
3091
            for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
3092
                if(h->delayed_pic[i]->poc < out->poc){
3093
                    out = h->delayed_pic[i];
3094
                    out_idx = i;
3095
                }
3096
            if(s->avctx->has_b_frames == 0 && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset))
3097
                h->outputed_poc= INT_MIN;
3098
            out_of_order = out->poc < h->outputed_poc;
3099

    
3100
            if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames)
3101
                { }
3102
            else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT)
3103
               || (s->low_delay &&
3104
                ((h->outputed_poc != INT_MIN && out->poc > h->outputed_poc + 2)
3105
                 || cur->pict_type == FF_B_TYPE)))
3106
            {
3107
                s->low_delay = 0;
3108
                s->avctx->has_b_frames++;
3109
            }
3110

    
3111
            if(out_of_order || pics > s->avctx->has_b_frames){
3112
                out->reference &= ~DELAYED_PIC_REF;
3113
                for(i=out_idx; h->delayed_pic[i]; i++)
3114
                    h->delayed_pic[i] = h->delayed_pic[i+1];
3115
            }
3116
            if(!out_of_order && pics > s->avctx->has_b_frames){
3117
                *data_size = sizeof(AVFrame);
3118

    
3119
                if(out_idx==0 && h->delayed_pic[0] && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) {
3120
                    h->outputed_poc = INT_MIN;
3121
                } else
3122
                    h->outputed_poc = out->poc;
3123
                *pict= *(AVFrame*)out;
3124
            }else{
3125
                av_log(avctx, AV_LOG_DEBUG, "no picture\n");
3126
            }
3127
        }
3128
    }
3129

    
3130
    assert(pict->data[0] || !*data_size);
3131
    ff_print_debug_info(s, pict);
3132
//printf("out %d\n", (int)pict->data[0]);
3133

    
3134
    return get_consumed_bytes(s, buf_index, buf_size);
3135
}
3136
#if 0
3137
static inline void fill_mb_avail(H264Context *h){
3138
    MpegEncContext * const s = &h->s;
3139
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
3140

3141
    if(s->mb_y){
3142
        h->mb_avail[0]= s->mb_x                 && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num;
3143
        h->mb_avail[1]=                            h->slice_table[mb_xy - s->mb_stride    ] == h->slice_num;
3144
        h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num;
3145
    }else{
3146
        h->mb_avail[0]=
3147
        h->mb_avail[1]=
3148
        h->mb_avail[2]= 0;
3149
    }
3150
    h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num;
3151
    h->mb_avail[4]= 1; //FIXME move out
3152
    h->mb_avail[5]= 0; //FIXME move out
3153
}
3154
#endif
3155

    
3156
#ifdef TEST
3157
#undef printf
3158
#undef random
3159
#define COUNT 8000
3160
#define SIZE (COUNT*40)
3161
int main(void){
3162
    int i;
3163
    uint8_t temp[SIZE];
3164
    PutBitContext pb;
3165
    GetBitContext gb;
3166
//    int int_temp[10000];
3167
    DSPContext dsp;
3168
    AVCodecContext avctx;
3169

    
3170
    dsputil_init(&dsp, &avctx);
3171

    
3172
    init_put_bits(&pb, temp, SIZE);
3173
    printf("testing unsigned exp golomb\n");
3174
    for(i=0; i<COUNT; i++){
3175
        START_TIMER
3176
        set_ue_golomb(&pb, i);
3177
        STOP_TIMER("set_ue_golomb");
3178
    }
3179
    flush_put_bits(&pb);
3180

    
3181
    init_get_bits(&gb, temp, 8*SIZE);
3182
    for(i=0; i<COUNT; i++){
3183
        int j, s;
3184

    
3185
        s= show_bits(&gb, 24);
3186

    
3187
        START_TIMER
3188
        j= get_ue_golomb(&gb);
3189
        if(j != i){
3190
            printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
3191
//            return -1;
3192
        }
3193
        STOP_TIMER("get_ue_golomb");
3194
    }
3195

    
3196

    
3197
    init_put_bits(&pb, temp, SIZE);
3198
    printf("testing signed exp golomb\n");
3199
    for(i=0; i<COUNT; i++){
3200
        START_TIMER
3201
        set_se_golomb(&pb, i - COUNT/2);
3202
        STOP_TIMER("set_se_golomb");
3203
    }
3204
    flush_put_bits(&pb);
3205

    
3206
    init_get_bits(&gb, temp, 8*SIZE);
3207
    for(i=0; i<COUNT; i++){
3208
        int j, s;
3209

    
3210
        s= show_bits(&gb, 24);
3211

    
3212
        START_TIMER
3213
        j= get_se_golomb(&gb);
3214
        if(j != i - COUNT/2){
3215
            printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
3216
//            return -1;
3217
        }
3218
        STOP_TIMER("get_se_golomb");
3219
    }
3220

    
3221
#if 0
3222
    printf("testing 4x4 (I)DCT\n");
3223

3224
    DCTELEM block[16];
3225
    uint8_t src[16], ref[16];
3226
    uint64_t error= 0, max_error=0;
3227

3228
    for(i=0; i<COUNT; i++){
3229
        int j;
3230
//        printf("%d %d %d\n", r1, r2, (r2-r1)*16);
3231
        for(j=0; j<16; j++){
3232
            ref[j]= random()%255;
3233
            src[j]= random()%255;
3234
        }
3235

3236
        h264_diff_dct_c(block, src, ref, 4);
3237

3238
        //normalize
3239
        for(j=0; j<16; j++){
3240
//            printf("%d ", block[j]);
3241
            block[j]= block[j]*4;
3242
            if(j&1) block[j]= (block[j]*4 + 2)/5;
3243
            if(j&4) block[j]= (block[j]*4 + 2)/5;
3244
        }
3245
//        printf("\n");
3246

3247
        h->h264dsp.h264_idct_add(ref, block, 4);
3248
/*        for(j=0; j<16; j++){
3249
            printf("%d ", ref[j]);
3250
        }
3251
        printf("\n");*/
3252

3253
        for(j=0; j<16; j++){
3254
            int diff= FFABS(src[j] - ref[j]);
3255

3256
            error+= diff*diff;
3257
            max_error= FFMAX(max_error, diff);
3258
        }
3259
    }
3260
    printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
3261
    printf("testing quantizer\n");
3262
    for(qp=0; qp<52; qp++){
3263
        for(i=0; i<16; i++)
3264
            src1_block[i]= src2_block[i]= random()%255;
3265

3266
    }
3267
    printf("Testing NAL layer\n");
3268

3269
    uint8_t bitstream[COUNT];
3270
    uint8_t nal[COUNT*2];
3271
    H264Context h;
3272
    memset(&h, 0, sizeof(H264Context));
3273

3274
    for(i=0; i<COUNT; i++){
3275
        int zeros= i;
3276
        int nal_length;
3277
        int consumed;
3278
        int out_length;
3279
        uint8_t *out;
3280
        int j;
3281

3282
        for(j=0; j<COUNT; j++){
3283
            bitstream[j]= (random() % 255) + 1;
3284
        }
3285

3286
        for(j=0; j<zeros; j++){
3287
            int pos= random() % COUNT;
3288
            while(bitstream[pos] == 0){
3289
                pos++;
3290
                pos %= COUNT;
3291
            }
3292
            bitstream[pos]=0;
3293
        }
3294

3295
        START_TIMER
3296

3297
        nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
3298
        if(nal_length<0){
3299
            printf("encoding failed\n");
3300
            return -1;
3301
        }
3302

3303
        out= ff_h264_decode_nal(&h, nal, &out_length, &consumed, nal_length);
3304

3305
        STOP_TIMER("NAL")
3306

3307
        if(out_length != COUNT){
3308
            printf("incorrect length %d %d\n", out_length, COUNT);
3309
            return -1;
3310
        }
3311

3312
        if(consumed != nal_length){
3313
            printf("incorrect consumed length %d %d\n", nal_length, consumed);
3314
            return -1;
3315
        }
3316

3317
        if(memcmp(bitstream, out, COUNT)){
3318
            printf("mismatch\n");
3319
            return -1;
3320
        }
3321
    }
3322
#endif
3323

    
3324
    printf("Testing RBSP\n");
3325

    
3326

    
3327
    return 0;
3328
}
3329
#endif /* TEST */
3330

    
3331

    
3332
av_cold void ff_h264_free_context(H264Context *h)
3333
{
3334
    int i;
3335

    
3336
    free_tables(h, 1); //FIXME cleanup init stuff perhaps
3337

    
3338
    for(i = 0; i < MAX_SPS_COUNT; i++)
3339
        av_freep(h->sps_buffers + i);
3340

    
3341
    for(i = 0; i < MAX_PPS_COUNT; i++)
3342
        av_freep(h->pps_buffers + i);
3343
}
3344

    
3345
av_cold int ff_h264_decode_end(AVCodecContext *avctx)
3346
{
3347
    H264Context *h = avctx->priv_data;
3348
    MpegEncContext *s = &h->s;
3349

    
3350
    ff_h264_free_context(h);
3351

    
3352
    MPV_common_end(s);
3353

    
3354
//    memset(h, 0, sizeof(H264Context));
3355

    
3356
    return 0;
3357
}
3358

    
3359

    
3360
AVCodec h264_decoder = {
3361
    "h264",
3362
    AVMEDIA_TYPE_VIDEO,
3363
    CODEC_ID_H264,
3364
    sizeof(H264Context),
3365
    ff_h264_decode_init,
3366
    NULL,
3367
    ff_h264_decode_end,
3368
    decode_frame,
3369
    /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_DELAY,
3370
    .flush= flush_dpb,
3371
    .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
3372
};
3373

    
3374
#if CONFIG_H264_VDPAU_DECODER
3375
AVCodec h264_vdpau_decoder = {
3376
    "h264_vdpau",
3377
    AVMEDIA_TYPE_VIDEO,
3378
    CODEC_ID_H264,
3379
    sizeof(H264Context),
3380
    ff_h264_decode_init,
3381
    NULL,
3382
    ff_h264_decode_end,
3383
    decode_frame,
3384
    CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
3385
    .flush= flush_dpb,
3386
    .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
3387
    .pix_fmts = (const enum PixelFormat[]){PIX_FMT_VDPAU_H264, PIX_FMT_NONE},
3388
};
3389
#endif