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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
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 * 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
20
 */
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 "golomb.h"
37
#include "mathops.h"
38
#include "rectangle.h"
39
#include "vdpau_internal.h"
40
#include "libavutil/avassert.h"
41

    
42
#include "cabac.h"
43

    
44
//#undef NDEBUG
45
#include <assert.h>
46

    
47
static const uint8_t rem6[52]={
48
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,
49
};
50

    
51
static const uint8_t div6[52]={
52
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,
53
};
54

    
55
static const enum PixelFormat hwaccel_pixfmt_list_h264_jpeg_420[] = {
56
    PIX_FMT_DXVA2_VLD,
57
    PIX_FMT_VAAPI_VLD,
58
    PIX_FMT_YUVJ420P,
59
    PIX_FMT_NONE
60
};
61

    
62
void ff_h264_write_back_intra_pred_mode(H264Context *h){
63
    int8_t *mode= h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
64

    
65
    AV_COPY32(mode, h->intra4x4_pred_mode_cache + 4 + 8*4);
66
    mode[4]= h->intra4x4_pred_mode_cache[7+8*3];
67
    mode[5]= h->intra4x4_pred_mode_cache[7+8*2];
68
    mode[6]= h->intra4x4_pred_mode_cache[7+8*1];
69
}
70

    
71
/**
72
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
73
 */
74
int ff_h264_check_intra4x4_pred_mode(H264Context *h){
75
    MpegEncContext * const s = &h->s;
76
    static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
77
    static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
78
    int i;
79

    
80
    if(!(h->top_samples_available&0x8000)){
81
        for(i=0; i<4; i++){
82
            int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
83
            if(status<0){
84
                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);
85
                return -1;
86
            } else if(status){
87
                h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
88
            }
89
        }
90
    }
91

    
92
    if((h->left_samples_available&0x8888)!=0x8888){
93
        static const int mask[4]={0x8000,0x2000,0x80,0x20};
94
        for(i=0; i<4; i++){
95
            if(!(h->left_samples_available&mask[i])){
96
                int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
97
                if(status<0){
98
                    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);
99
                    return -1;
100
                } else if(status){
101
                    h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
102
                }
103
            }
104
        }
105
    }
106

    
107
    return 0;
108
} //FIXME cleanup like ff_h264_check_intra_pred_mode
109

    
110
/**
111
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
112
 */
113
int ff_h264_check_intra_pred_mode(H264Context *h, int mode){
114
    MpegEncContext * const s = &h->s;
115
    static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
116
    static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
117

    
118
    if(mode > 6U) {
119
        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);
120
        return -1;
121
    }
122

    
123
    if(!(h->top_samples_available&0x8000)){
124
        mode= top[ mode ];
125
        if(mode<0){
126
            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);
127
            return -1;
128
        }
129
    }
130

    
131
    if((h->left_samples_available&0x8080) != 0x8080){
132
        mode= left[ mode ];
133
        if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
134
            mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
135
        }
136
        if(mode<0){
137
            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);
138
            return -1;
139
        }
140
    }
141

    
142
    return mode;
143
}
144

    
145
const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
146
    int i, si, di;
147
    uint8_t *dst;
148
    int bufidx;
149

    
150
//    src[0]&0x80;                //forbidden bit
151
    h->nal_ref_idc= src[0]>>5;
152
    h->nal_unit_type= src[0]&0x1F;
153

    
154
    src++; length--;
155
#if 0
156
    for(i=0; i<length; i++)
157
        printf("%2X ", src[i]);
158
#endif
159

    
160
#if HAVE_FAST_UNALIGNED
161
# if HAVE_FAST_64BIT
162
#   define RS 7
163
    for(i=0; i+1<length; i+=9){
164
        if(!((~AV_RN64A(src+i) & (AV_RN64A(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
165
# else
166
#   define RS 3
167
    for(i=0; i+1<length; i+=5){
168
        if(!((~AV_RN32A(src+i) & (AV_RN32A(src+i) - 0x01000101U)) & 0x80008080U))
169
# endif
170
            continue;
171
        if(i>0 && !src[i]) i--;
172
        while(src[i]) i++;
173
#else
174
#   define RS 0
175
    for(i=0; i+1<length; i+=2){
176
        if(src[i]) continue;
177
        if(i>0 && src[i-1]==0) i--;
178
#endif
179
        if(i+2<length && src[i+1]==0 && src[i+2]<=3){
180
            if(src[i+2]!=3){
181
                /* startcode, so we must be past the end */
182
                length=i;
183
            }
184
            break;
185
        }
186
        i-= RS;
187
    }
188

    
189
    if(i>=length-1){ //no escaped 0
190
        *dst_length= length;
191
        *consumed= length+1; //+1 for the header
192
        return src;
193
    }
194

    
195
    bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
196
    av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
197
    dst= h->rbsp_buffer[bufidx];
198

    
199
    if (dst == NULL){
200
        return NULL;
201
    }
202

    
203
//printf("decoding esc\n");
204
    memcpy(dst, src, i);
205
    si=di=i;
206
    while(si+2<length){
207
        //remove escapes (very rare 1:2^22)
208
        if(src[si+2]>3){
209
            dst[di++]= src[si++];
210
            dst[di++]= src[si++];
211
        }else if(src[si]==0 && src[si+1]==0){
212
            if(src[si+2]==3){ //escape
213
                dst[di++]= 0;
214
                dst[di++]= 0;
215
                si+=3;
216
                continue;
217
            }else //next start code
218
                goto nsc;
219
        }
220

    
221
        dst[di++]= src[si++];
222
    }
223
    while(si<length)
224
        dst[di++]= src[si++];
225
nsc:
226

    
227
    memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
228

    
229
    *dst_length= di;
230
    *consumed= si + 1;//+1 for the header
231
//FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
232
    return dst;
233
}
234

    
235
/**
236
 * Identify the exact end of the bitstream
237
 * @return the length of the trailing, or 0 if damaged
238
 */
239
static int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
240
    int v= *src;
241
    int r;
242

    
243
    tprintf(h->s.avctx, "rbsp trailing %X\n", v);
244

    
245
    for(r=1; r<9; r++){
246
        if(v&1) return r;
247
        v>>=1;
248
    }
249
    return 0;
250
}
251

    
252
#if 0
253
/**
254
 * DCT transforms the 16 dc values.
255
 * @param qp quantization parameter ??? FIXME
256
 */
257
static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
258
//    const int qmul= dequant_coeff[qp][0];
259
    int i;
260
    int temp[16]; //FIXME check if this is a good idea
261
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
262
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
263

264
    for(i=0; i<4; i++){
265
        const int offset= y_offset[i];
266
        const int z0= block[offset+stride*0] + block[offset+stride*4];
267
        const int z1= block[offset+stride*0] - block[offset+stride*4];
268
        const int z2= block[offset+stride*1] - block[offset+stride*5];
269
        const int z3= block[offset+stride*1] + block[offset+stride*5];
270

271
        temp[4*i+0]= z0+z3;
272
        temp[4*i+1]= z1+z2;
273
        temp[4*i+2]= z1-z2;
274
        temp[4*i+3]= z0-z3;
275
    }
276

277
    for(i=0; i<4; i++){
278
        const int offset= x_offset[i];
279
        const int z0= temp[4*0+i] + temp[4*2+i];
280
        const int z1= temp[4*0+i] - temp[4*2+i];
281
        const int z2= temp[4*1+i] - temp[4*3+i];
282
        const int z3= temp[4*1+i] + temp[4*3+i];
283

284
        block[stride*0 +offset]= (z0 + z3)>>1;
285
        block[stride*2 +offset]= (z1 + z2)>>1;
286
        block[stride*8 +offset]= (z1 - z2)>>1;
287
        block[stride*10+offset]= (z0 - z3)>>1;
288
    }
289
}
290
#endif
291

    
292
#undef xStride
293
#undef stride
294

    
295
static void chroma_dc_dequant_idct_c(DCTELEM *block, int qmul){
296
    const int stride= 16*2;
297
    const int xStride= 16;
298
    int a,b,c,d,e;
299

    
300
    a= block[stride*0 + xStride*0];
301
    b= block[stride*0 + xStride*1];
302
    c= block[stride*1 + xStride*0];
303
    d= block[stride*1 + xStride*1];
304

    
305
    e= a-b;
306
    a= a+b;
307
    b= c-d;
308
    c= c+d;
309

    
310
    block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
311
    block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
312
    block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
313
    block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
314
}
315

    
316
#if 0
317
static void chroma_dc_dct_c(DCTELEM *block){
318
    const int stride= 16*2;
319
    const int xStride= 16;
320
    int a,b,c,d,e;
321

322
    a= block[stride*0 + xStride*0];
323
    b= block[stride*0 + xStride*1];
324
    c= block[stride*1 + xStride*0];
325
    d= block[stride*1 + xStride*1];
326

327
    e= a-b;
328
    a= a+b;
329
    b= c-d;
330
    c= c+d;
331

332
    block[stride*0 + xStride*0]= (a+c);
333
    block[stride*0 + xStride*1]= (e+b);
334
    block[stride*1 + xStride*0]= (a-c);
335
    block[stride*1 + xStride*1]= (e-b);
336
}
337
#endif
338

    
339
static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
340
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
341
                           int src_x_offset, int src_y_offset,
342
                           qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
343
    MpegEncContext * const s = &h->s;
344
    const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
345
    int my=       h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
346
    const int luma_xy= (mx&3) + ((my&3)<<2);
347
    uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
348
    uint8_t * src_cb, * src_cr;
349
    int extra_width= h->emu_edge_width;
350
    int extra_height= h->emu_edge_height;
351
    int emu=0;
352
    const int full_mx= mx>>2;
353
    const int full_my= my>>2;
354
    const int pic_width  = 16*s->mb_width;
355
    const int pic_height = 16*s->mb_height >> MB_FIELD;
356

    
357
    if(mx&7) extra_width -= 3;
358
    if(my&7) extra_height -= 3;
359

    
360
    if(   full_mx < 0-extra_width
361
       || full_my < 0-extra_height
362
       || full_mx + 16/*FIXME*/ > pic_width + extra_width
363
       || full_my + 16/*FIXME*/ > pic_height + extra_height){
364
        s->dsp.emulated_edge_mc(s->edge_emu_buffer, src_y - 2 - 2*h->mb_linesize, h->mb_linesize, 16+5, 16+5/*FIXME*/, full_mx-2, full_my-2, pic_width, pic_height);
365
            src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
366
        emu=1;
367
    }
368

    
369
    qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
370
    if(!square){
371
        qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
372
    }
373

    
374
    if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
375

    
376
    if(MB_FIELD){
377
        // chroma offset when predicting from a field of opposite parity
378
        my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
379
        emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
380
    }
381
    src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
382
    src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
383

    
384
    if(emu){
385
        s->dsp.emulated_edge_mc(s->edge_emu_buffer, src_cb, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
386
            src_cb= s->edge_emu_buffer;
387
    }
388
    chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
389

    
390
    if(emu){
391
        s->dsp.emulated_edge_mc(s->edge_emu_buffer, src_cr, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
392
            src_cr= s->edge_emu_buffer;
393
    }
394
    chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
395
}
396

    
397
static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
398
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
399
                           int x_offset, int y_offset,
400
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
401
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
402
                           int list0, int list1){
403
    MpegEncContext * const s = &h->s;
404
    qpel_mc_func *qpix_op=  qpix_put;
405
    h264_chroma_mc_func chroma_op= chroma_put;
406

    
407
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
408
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
409
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
410
    x_offset += 8*s->mb_x;
411
    y_offset += 8*(s->mb_y >> MB_FIELD);
412

    
413
    if(list0){
414
        Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
415
        mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
416
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
417
                           qpix_op, chroma_op);
418

    
419
        qpix_op=  qpix_avg;
420
        chroma_op= chroma_avg;
421
    }
422

    
423
    if(list1){
424
        Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
425
        mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
426
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
427
                           qpix_op, chroma_op);
428
    }
429
}
430

    
431
static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
432
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
433
                           int x_offset, int y_offset,
434
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
435
                           h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
436
                           h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
437
                           int list0, int list1){
438
    MpegEncContext * const s = &h->s;
439

    
440
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
441
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
442
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
443
    x_offset += 8*s->mb_x;
444
    y_offset += 8*(s->mb_y >> MB_FIELD);
445

    
446
    if(list0 && list1){
447
        /* don't optimize for luma-only case, since B-frames usually
448
         * use implicit weights => chroma too. */
449
        uint8_t *tmp_cb = s->obmc_scratchpad;
450
        uint8_t *tmp_cr = s->obmc_scratchpad + 8;
451
        uint8_t *tmp_y  = s->obmc_scratchpad + 8*h->mb_uvlinesize;
452
        int refn0 = h->ref_cache[0][ scan8[n] ];
453
        int refn1 = h->ref_cache[1][ scan8[n] ];
454

    
455
        mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
456
                    dest_y, dest_cb, dest_cr,
457
                    x_offset, y_offset, qpix_put, chroma_put);
458
        mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
459
                    tmp_y, tmp_cb, tmp_cr,
460
                    x_offset, y_offset, qpix_put, chroma_put);
461

    
462
        if(h->use_weight == 2){
463
            int weight0 = h->implicit_weight[refn0][refn1][s->mb_y&1];
464
            int weight1 = 64 - weight0;
465
            luma_weight_avg(  dest_y,  tmp_y,  h->  mb_linesize, 5, weight0, weight1, 0);
466
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
467
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
468
        }else{
469
            luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
470
                            h->luma_weight[refn0][0][0] , h->luma_weight[refn1][1][0],
471
                            h->luma_weight[refn0][0][1] + h->luma_weight[refn1][1][1]);
472
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
473
                            h->chroma_weight[refn0][0][0][0] , h->chroma_weight[refn1][1][0][0],
474
                            h->chroma_weight[refn0][0][0][1] + h->chroma_weight[refn1][1][0][1]);
475
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
476
                            h->chroma_weight[refn0][0][1][0] , h->chroma_weight[refn1][1][1][0],
477
                            h->chroma_weight[refn0][0][1][1] + h->chroma_weight[refn1][1][1][1]);
478
        }
479
    }else{
480
        int list = list1 ? 1 : 0;
481
        int refn = h->ref_cache[list][ scan8[n] ];
482
        Picture *ref= &h->ref_list[list][refn];
483
        mc_dir_part(h, ref, n, square, chroma_height, delta, list,
484
                    dest_y, dest_cb, dest_cr, x_offset, y_offset,
485
                    qpix_put, chroma_put);
486

    
487
        luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
488
                       h->luma_weight[refn][list][0], h->luma_weight[refn][list][1]);
489
        if(h->use_weight_chroma){
490
            chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
491
                             h->chroma_weight[refn][list][0][0], h->chroma_weight[refn][list][0][1]);
492
            chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
493
                             h->chroma_weight[refn][list][1][0], h->chroma_weight[refn][list][1][1]);
494
        }
495
    }
496
}
497

    
498
static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
499
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
500
                           int x_offset, int y_offset,
501
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
502
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
503
                           h264_weight_func *weight_op, h264_biweight_func *weight_avg,
504
                           int list0, int list1){
505
    if((h->use_weight==2 && list0 && list1
506
        && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ][h->s.mb_y&1] != 32))
507
       || h->use_weight==1)
508
        mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
509
                         x_offset, y_offset, qpix_put, chroma_put,
510
                         weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
511
    else
512
        mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
513
                    x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
514
}
515

    
516
static inline void prefetch_motion(H264Context *h, int list){
517
    /* fetch pixels for estimated mv 4 macroblocks ahead
518
     * optimized for 64byte cache lines */
519
    MpegEncContext * const s = &h->s;
520
    const int refn = h->ref_cache[list][scan8[0]];
521
    if(refn >= 0){
522
        const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
523
        const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
524
        uint8_t **src= h->ref_list[list][refn].data;
525
        int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
526
        s->dsp.prefetch(src[0]+off, s->linesize, 4);
527
        off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
528
        s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
529
    }
530
}
531

    
532
static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
533
                      qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
534
                      qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
535
                      h264_weight_func *weight_op, h264_biweight_func *weight_avg){
536
    MpegEncContext * const s = &h->s;
537
    const int mb_xy= h->mb_xy;
538
    const int mb_type= s->current_picture.mb_type[mb_xy];
539

    
540
    assert(IS_INTER(mb_type));
541

    
542
    prefetch_motion(h, 0);
543

    
544
    if(IS_16X16(mb_type)){
545
        mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
546
                qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
547
                weight_op, weight_avg,
548
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
549
    }else if(IS_16X8(mb_type)){
550
        mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
551
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
552
                &weight_op[1], &weight_avg[1],
553
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
554
        mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
555
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
556
                &weight_op[1], &weight_avg[1],
557
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
558
    }else if(IS_8X16(mb_type)){
559
        mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
560
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
561
                &weight_op[2], &weight_avg[2],
562
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
563
        mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
564
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
565
                &weight_op[2], &weight_avg[2],
566
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
567
    }else{
568
        int i;
569

    
570
        assert(IS_8X8(mb_type));
571

    
572
        for(i=0; i<4; i++){
573
            const int sub_mb_type= h->sub_mb_type[i];
574
            const int n= 4*i;
575
            int x_offset= (i&1)<<2;
576
            int y_offset= (i&2)<<1;
577

    
578
            if(IS_SUB_8X8(sub_mb_type)){
579
                mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
580
                    qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
581
                    &weight_op[3], &weight_avg[3],
582
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
583
            }else if(IS_SUB_8X4(sub_mb_type)){
584
                mc_part(h, n  , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
585
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
586
                    &weight_op[4], &weight_avg[4],
587
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
588
                mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
589
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
590
                    &weight_op[4], &weight_avg[4],
591
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
592
            }else if(IS_SUB_4X8(sub_mb_type)){
593
                mc_part(h, n  , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
594
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
595
                    &weight_op[5], &weight_avg[5],
596
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
597
                mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
598
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
599
                    &weight_op[5], &weight_avg[5],
600
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
601
            }else{
602
                int j;
603
                assert(IS_SUB_4X4(sub_mb_type));
604
                for(j=0; j<4; j++){
605
                    int sub_x_offset= x_offset + 2*(j&1);
606
                    int sub_y_offset= y_offset +   (j&2);
607
                    mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
608
                        qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
609
                        &weight_op[6], &weight_avg[6],
610
                        IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
611
                }
612
            }
613
        }
614
    }
615

    
616
    prefetch_motion(h, 1);
617
}
618

    
619

    
620
static void free_tables(H264Context *h, int free_rbsp){
621
    int i;
622
    H264Context *hx;
623
    av_freep(&h->intra4x4_pred_mode);
624
    av_freep(&h->chroma_pred_mode_table);
625
    av_freep(&h->cbp_table);
626
    av_freep(&h->mvd_table[0]);
627
    av_freep(&h->mvd_table[1]);
628
    av_freep(&h->direct_table);
629
    av_freep(&h->non_zero_count);
630
    av_freep(&h->slice_table_base);
631
    h->slice_table= NULL;
632
    av_freep(&h->list_counts);
633

    
634
    av_freep(&h->mb2b_xy);
635
    av_freep(&h->mb2br_xy);
636

    
637
    for(i = 0; i < MAX_THREADS; i++) {
638
        hx = h->thread_context[i];
639
        if(!hx) continue;
640
        av_freep(&hx->top_borders[1]);
641
        av_freep(&hx->top_borders[0]);
642
        av_freep(&hx->s.obmc_scratchpad);
643
        if (free_rbsp){
644
            av_freep(&hx->rbsp_buffer[1]);
645
            av_freep(&hx->rbsp_buffer[0]);
646
            hx->rbsp_buffer_size[0] = 0;
647
            hx->rbsp_buffer_size[1] = 0;
648
        }
649
        if (i) av_freep(&h->thread_context[i]);
650
    }
651
}
652

    
653
static void init_dequant8_coeff_table(H264Context *h){
654
    int i,q,x;
655
    h->dequant8_coeff[0] = h->dequant8_buffer[0];
656
    h->dequant8_coeff[1] = h->dequant8_buffer[1];
657

    
658
    for(i=0; i<2; i++ ){
659
        if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
660
            h->dequant8_coeff[1] = h->dequant8_buffer[0];
661
            break;
662
        }
663

    
664
        for(q=0; q<52; q++){
665
            int shift = div6[q];
666
            int idx = rem6[q];
667
            for(x=0; x<64; x++)
668
                h->dequant8_coeff[i][q][(x>>3)|((x&7)<<3)] =
669
                    ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
670
                    h->pps.scaling_matrix8[i][x]) << shift;
671
        }
672
    }
673
}
674

    
675
static void init_dequant4_coeff_table(H264Context *h){
676
    int i,j,q,x;
677
    for(i=0; i<6; i++ ){
678
        h->dequant4_coeff[i] = h->dequant4_buffer[i];
679
        for(j=0; j<i; j++){
680
            if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
681
                h->dequant4_coeff[i] = h->dequant4_buffer[j];
682
                break;
683
            }
684
        }
685
        if(j<i)
686
            continue;
687

    
688
        for(q=0; q<52; q++){
689
            int shift = div6[q] + 2;
690
            int idx = rem6[q];
691
            for(x=0; x<16; x++)
692
                h->dequant4_coeff[i][q][(x>>2)|((x<<2)&0xF)] =
693
                    ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
694
                    h->pps.scaling_matrix4[i][x]) << shift;
695
        }
696
    }
697
}
698

    
699
static void init_dequant_tables(H264Context *h){
700
    int i,x;
701
    init_dequant4_coeff_table(h);
702
    if(h->pps.transform_8x8_mode)
703
        init_dequant8_coeff_table(h);
704
    if(h->sps.transform_bypass){
705
        for(i=0; i<6; i++)
706
            for(x=0; x<16; x++)
707
                h->dequant4_coeff[i][0][x] = 1<<6;
708
        if(h->pps.transform_8x8_mode)
709
            for(i=0; i<2; i++)
710
                for(x=0; x<64; x++)
711
                    h->dequant8_coeff[i][0][x] = 1<<6;
712
    }
713
}
714

    
715

    
716
int ff_h264_alloc_tables(H264Context *h){
717
    MpegEncContext * const s = &h->s;
718
    const int big_mb_num= s->mb_stride * (s->mb_height+1);
719
    const int row_mb_num= 2*s->mb_stride*s->avctx->thread_count;
720
    int x,y;
721

    
722
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, row_mb_num * 8  * sizeof(uint8_t), fail)
723

    
724
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count    , big_mb_num * 32 * sizeof(uint8_t), fail)
725
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base  , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base), fail)
726
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table, big_mb_num * sizeof(uint16_t), fail)
727

    
728
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t), fail)
729
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0], 16*row_mb_num * sizeof(uint8_t), fail);
730
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 16*row_mb_num * sizeof(uint8_t), fail);
731
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 4*big_mb_num * sizeof(uint8_t) , fail);
732
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->list_counts, big_mb_num * sizeof(uint8_t), fail)
733

    
734
    memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride)  * sizeof(*h->slice_table_base));
735
    h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
736

    
737
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy  , big_mb_num * sizeof(uint32_t), fail);
738
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2br_xy , big_mb_num * sizeof(uint32_t), fail);
739
    for(y=0; y<s->mb_height; y++){
740
        for(x=0; x<s->mb_width; x++){
741
            const int mb_xy= x + y*s->mb_stride;
742
            const int b_xy = 4*x + 4*y*h->b_stride;
743

    
744
            h->mb2b_xy [mb_xy]= b_xy;
745
            h->mb2br_xy[mb_xy]= 8*(FMO ? mb_xy : (mb_xy % (2*s->mb_stride)));
746
        }
747
    }
748

    
749
    s->obmc_scratchpad = NULL;
750

    
751
    if(!h->dequant4_coeff[0])
752
        init_dequant_tables(h);
753

    
754
    return 0;
755
fail:
756
    free_tables(h, 1);
757
    return -1;
758
}
759

    
760
/**
761
 * Mimic alloc_tables(), but for every context thread.
762
 */
763
static void clone_tables(H264Context *dst, H264Context *src, int i){
764
    MpegEncContext * const s = &src->s;
765
    dst->intra4x4_pred_mode       = src->intra4x4_pred_mode + i*8*2*s->mb_stride;
766
    dst->non_zero_count           = src->non_zero_count;
767
    dst->slice_table              = src->slice_table;
768
    dst->cbp_table                = src->cbp_table;
769
    dst->mb2b_xy                  = src->mb2b_xy;
770
    dst->mb2br_xy                 = src->mb2br_xy;
771
    dst->chroma_pred_mode_table   = src->chroma_pred_mode_table;
772
    dst->mvd_table[0]             = src->mvd_table[0] + i*8*2*s->mb_stride;
773
    dst->mvd_table[1]             = src->mvd_table[1] + i*8*2*s->mb_stride;
774
    dst->direct_table             = src->direct_table;
775
    dst->list_counts              = src->list_counts;
776

    
777
    dst->s.obmc_scratchpad = NULL;
778
    ff_h264_pred_init(&dst->hpc, src->s.codec_id);
779
}
780

    
781
/**
782
 * Init context
783
 * Allocate buffers which are not shared amongst multiple threads.
784
 */
785
static int context_init(H264Context *h){
786
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
787
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
788

    
789
    h->ref_cache[0][scan8[5 ]+1] = h->ref_cache[0][scan8[7 ]+1] = h->ref_cache[0][scan8[13]+1] =
790
    h->ref_cache[1][scan8[5 ]+1] = h->ref_cache[1][scan8[7 ]+1] = h->ref_cache[1][scan8[13]+1] = PART_NOT_AVAILABLE;
791

    
792
    return 0;
793
fail:
794
    return -1; // free_tables will clean up for us
795
}
796

    
797
static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size);
798

    
799
static av_cold void common_init(H264Context *h){
800
    MpegEncContext * const s = &h->s;
801

    
802
    s->width = s->avctx->width;
803
    s->height = s->avctx->height;
804
    s->codec_id= s->avctx->codec->id;
805

    
806
    ff_h264dsp_init(&h->h264dsp);
807
    ff_h264_pred_init(&h->hpc, s->codec_id);
808

    
809
    h->dequant_coeff_pps= -1;
810
    s->unrestricted_mv=1;
811
    s->decode=1; //FIXME
812

    
813
    dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early
814

    
815
    memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
816
    memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
817
}
818

    
819
int ff_h264_decode_extradata(H264Context *h)
820
{
821
    AVCodecContext *avctx = h->s.avctx;
822

    
823
    if(*(char *)avctx->extradata == 1){
824
        int i, cnt, nalsize;
825
        unsigned char *p = avctx->extradata;
826

    
827
        h->is_avc = 1;
828

    
829
        if(avctx->extradata_size < 7) {
830
            av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
831
            return -1;
832
        }
833
        /* sps and pps in the avcC always have length coded with 2 bytes,
834
           so put a fake nal_length_size = 2 while parsing them */
835
        h->nal_length_size = 2;
836
        // Decode sps from avcC
837
        cnt = *(p+5) & 0x1f; // Number of sps
838
        p += 6;
839
        for (i = 0; i < cnt; i++) {
840
            nalsize = AV_RB16(p) + 2;
841
            if(decode_nal_units(h, p, nalsize) < 0) {
842
                av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
843
                return -1;
844
            }
845
            p += nalsize;
846
        }
847
        // Decode pps from avcC
848
        cnt = *(p++); // Number of pps
849
        for (i = 0; i < cnt; i++) {
850
            nalsize = AV_RB16(p) + 2;
851
            if(decode_nal_units(h, p, nalsize)  != nalsize) {
852
                av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
853
                return -1;
854
            }
855
            p += nalsize;
856
        }
857
        // Now store right nal length size, that will be use to parse all other nals
858
        h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
859
    } else {
860
        h->is_avc = 0;
861
        if(decode_nal_units(h, avctx->extradata, avctx->extradata_size) < 0)
862
            return -1;
863
    }
864
    return 0;
865
}
866

    
867
av_cold int ff_h264_decode_init(AVCodecContext *avctx){
868
    H264Context *h= avctx->priv_data;
869
    MpegEncContext * const s = &h->s;
870

    
871
    MPV_decode_defaults(s);
872

    
873
    s->avctx = avctx;
874
    common_init(h);
875

    
876
    s->out_format = FMT_H264;
877
    s->workaround_bugs= avctx->workaround_bugs;
878

    
879
    // set defaults
880
//    s->decode_mb= ff_h263_decode_mb;
881
    s->quarter_sample = 1;
882
    if(!avctx->has_b_frames)
883
    s->low_delay= 1;
884

    
885
    avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
886

    
887
    ff_h264_decode_init_vlc();
888

    
889
    h->thread_context[0] = h;
890
    h->outputed_poc = INT_MIN;
891
    h->prev_poc_msb= 1<<16;
892
    h->x264_build = -1;
893
    ff_h264_reset_sei(h);
894
    if(avctx->codec_id == CODEC_ID_H264){
895
        if(avctx->ticks_per_frame == 1){
896
            s->avctx->time_base.den *=2;
897
        }
898
        avctx->ticks_per_frame = 2;
899
    }
900

    
901
    if(avctx->extradata_size > 0 && avctx->extradata &&
902
        ff_h264_decode_extradata(h))
903
        return -1;
904

    
905
    if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames < h->sps.num_reorder_frames){
906
        s->avctx->has_b_frames = h->sps.num_reorder_frames;
907
        s->low_delay = 0;
908
    }
909

    
910
    return 0;
911
}
912

    
913
int ff_h264_frame_start(H264Context *h){
914
    MpegEncContext * const s = &h->s;
915
    int i;
916

    
917
    if(MPV_frame_start(s, s->avctx) < 0)
918
        return -1;
919
    ff_er_frame_start(s);
920
    /*
921
     * MPV_frame_start uses pict_type to derive key_frame.
922
     * This is incorrect for H.264; IDR markings must be used.
923
     * Zero here; IDR markings per slice in frame or fields are ORed in later.
924
     * See decode_nal_units().
925
     */
926
    s->current_picture_ptr->key_frame= 0;
927
    s->current_picture_ptr->mmco_reset= 0;
928

    
929
    assert(s->linesize && s->uvlinesize);
930

    
931
    for(i=0; i<16; i++){
932
        h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
933
        h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
934
    }
935
    for(i=0; i<4; i++){
936
        h->block_offset[16+i]=
937
        h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
938
        h->block_offset[24+16+i]=
939
        h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
940
    }
941

    
942
    /* can't be in alloc_tables because linesize isn't known there.
943
     * FIXME: redo bipred weight to not require extra buffer? */
944
    for(i = 0; i < s->avctx->thread_count; i++)
945
        if(h->thread_context[i] && !h->thread_context[i]->s.obmc_scratchpad)
946
            h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
947

    
948
    /* some macroblocks can be accessed before they're available in case of lost slices, mbaff or threading*/
949
    memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
950

    
951
//    s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
952

    
953
    // We mark the current picture as non-reference after allocating it, so
954
    // that if we break out due to an error it can be released automatically
955
    // in the next MPV_frame_start().
956
    // SVQ3 as well as most other codecs have only last/next/current and thus
957
    // get released even with set reference, besides SVQ3 and others do not
958
    // mark frames as reference later "naturally".
959
    if(s->codec_id != CODEC_ID_SVQ3)
960
        s->current_picture_ptr->reference= 0;
961

    
962
    s->current_picture_ptr->field_poc[0]=
963
    s->current_picture_ptr->field_poc[1]= INT_MAX;
964
    assert(s->current_picture_ptr->long_ref==0);
965

    
966
    return 0;
967
}
968

    
969
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){
970
    MpegEncContext * const s = &h->s;
971
    uint8_t *top_border;
972
    int top_idx = 1;
973

    
974
    src_y  -=   linesize;
975
    src_cb -= uvlinesize;
976
    src_cr -= uvlinesize;
977

    
978
    if(!simple && FRAME_MBAFF){
979
        if(s->mb_y&1){
980
            if(!MB_MBAFF){
981
                top_border = h->top_borders[0][s->mb_x];
982
                AV_COPY128(top_border, src_y + 15*linesize);
983
                if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
984
                    AV_COPY64(top_border+16, src_cb+7*uvlinesize);
985
                    AV_COPY64(top_border+24, src_cr+7*uvlinesize);
986
                }
987
            }
988
        }else if(MB_MBAFF){
989
            top_idx = 0;
990
        }else
991
            return;
992
    }
993

    
994
    top_border = h->top_borders[top_idx][s->mb_x];
995
    // There are two lines saved, the line above the the top macroblock of a pair,
996
    // and the line above the bottom macroblock
997
    AV_COPY128(top_border, src_y + 16*linesize);
998

    
999
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1000
        AV_COPY64(top_border+16, src_cb+8*uvlinesize);
1001
        AV_COPY64(top_border+24, src_cr+8*uvlinesize);
1002
    }
1003
}
1004

    
1005
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){
1006
    MpegEncContext * const s = &h->s;
1007
    int deblock_left;
1008
    int deblock_top;
1009
    int top_idx = 1;
1010
    uint8_t *top_border_m1;
1011
    uint8_t *top_border;
1012

    
1013
    if(!simple && FRAME_MBAFF){
1014
        if(s->mb_y&1){
1015
            if(!MB_MBAFF)
1016
                return;
1017
        }else{
1018
            top_idx = MB_MBAFF ? 0 : 1;
1019
        }
1020
    }
1021

    
1022
    if(h->deblocking_filter == 2) {
1023
        deblock_left = h->left_type[0];
1024
        deblock_top  = h->top_type;
1025
    } else {
1026
        deblock_left = (s->mb_x > 0);
1027
        deblock_top =  (s->mb_y > !!MB_FIELD);
1028
    }
1029

    
1030
    src_y  -=   linesize + 1;
1031
    src_cb -= uvlinesize + 1;
1032
    src_cr -= uvlinesize + 1;
1033

    
1034
    top_border_m1 = h->top_borders[top_idx][s->mb_x-1];
1035
    top_border    = h->top_borders[top_idx][s->mb_x];
1036

    
1037
#define XCHG(a,b,xchg)\
1038
if (xchg) AV_SWAP64(b,a);\
1039
else      AV_COPY64(b,a);
1040

    
1041
    if(deblock_top){
1042
        if(deblock_left){
1043
            XCHG(top_border_m1+8, src_y -7, 1);
1044
        }
1045
        XCHG(top_border+0, src_y +1, xchg);
1046
        XCHG(top_border+8, src_y +9, 1);
1047
        if(s->mb_x+1 < s->mb_width){
1048
            XCHG(h->top_borders[top_idx][s->mb_x+1], src_y +17, 1);
1049
        }
1050
    }
1051

    
1052
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1053
        if(deblock_top){
1054
            if(deblock_left){
1055
                XCHG(top_border_m1+16, src_cb -7, 1);
1056
                XCHG(top_border_m1+24, src_cr -7, 1);
1057
            }
1058
            XCHG(top_border+16, src_cb+1, 1);
1059
            XCHG(top_border+24, src_cr+1, 1);
1060
        }
1061
    }
1062
}
1063

    
1064
static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
1065
    MpegEncContext * const s = &h->s;
1066
    const int mb_x= s->mb_x;
1067
    const int mb_y= s->mb_y;
1068
    const int mb_xy= h->mb_xy;
1069
    const int mb_type= s->current_picture.mb_type[mb_xy];
1070
    uint8_t  *dest_y, *dest_cb, *dest_cr;
1071
    int linesize, uvlinesize /*dct_offset*/;
1072
    int i;
1073
    int *block_offset = &h->block_offset[0];
1074
    const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
1075
    /* is_h264 should always be true if SVQ3 is disabled. */
1076
    const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
1077
    void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1078
    void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
1079

    
1080
    dest_y  = s->current_picture.data[0] + (mb_x + mb_y * s->linesize  ) * 16;
1081
    dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
1082
    dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
1083

    
1084
    s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
1085
    s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
1086

    
1087
    h->list_counts[mb_xy]= h->list_count;
1088

    
1089
    if (!simple && MB_FIELD) {
1090
        linesize   = h->mb_linesize   = s->linesize * 2;
1091
        uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
1092
        block_offset = &h->block_offset[24];
1093
        if(mb_y&1){ //FIXME move out of this function?
1094
            dest_y -= s->linesize*15;
1095
            dest_cb-= s->uvlinesize*7;
1096
            dest_cr-= s->uvlinesize*7;
1097
        }
1098
        if(FRAME_MBAFF) {
1099
            int list;
1100
            for(list=0; list<h->list_count; list++){
1101
                if(!USES_LIST(mb_type, list))
1102
                    continue;
1103
                if(IS_16X16(mb_type)){
1104
                    int8_t *ref = &h->ref_cache[list][scan8[0]];
1105
                    fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
1106
                }else{
1107
                    for(i=0; i<16; i+=4){
1108
                        int ref = h->ref_cache[list][scan8[i]];
1109
                        if(ref >= 0)
1110
                            fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
1111
                    }
1112
                }
1113
            }
1114
        }
1115
    } else {
1116
        linesize   = h->mb_linesize   = s->linesize;
1117
        uvlinesize = h->mb_uvlinesize = s->uvlinesize;
1118
//        dct_offset = s->linesize * 16;
1119
    }
1120

    
1121
    if (!simple && IS_INTRA_PCM(mb_type)) {
1122
        for (i=0; i<16; i++) {
1123
            memcpy(dest_y + i*  linesize, h->mb       + i*8, 16);
1124
        }
1125
        for (i=0; i<8; i++) {
1126
            memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4,  8);
1127
            memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4,  8);
1128
        }
1129
    } else {
1130
        if(IS_INTRA(mb_type)){
1131
            if(h->deblocking_filter)
1132
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
1133

    
1134
            if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1135
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
1136
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
1137
            }
1138

    
1139
            if(IS_INTRA4x4(mb_type)){
1140
                if(simple || !s->encoding){
1141
                    if(IS_8x8DCT(mb_type)){
1142
                        if(transform_bypass){
1143
                            idct_dc_add =
1144
                            idct_add    = s->dsp.add_pixels8;
1145
                        }else{
1146
                            idct_dc_add = h->h264dsp.h264_idct8_dc_add;
1147
                            idct_add    = h->h264dsp.h264_idct8_add;
1148
                        }
1149
                        for(i=0; i<16; i+=4){
1150
                            uint8_t * const ptr= dest_y + block_offset[i];
1151
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1152
                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1153
                                h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
1154
                            }else{
1155
                                const int nnz = h->non_zero_count_cache[ scan8[i] ];
1156
                                h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
1157
                                                            (h->topright_samples_available<<i)&0x4000, linesize);
1158
                                if(nnz){
1159
                                    if(nnz == 1 && h->mb[i*16])
1160
                                        idct_dc_add(ptr, h->mb + i*16, linesize);
1161
                                    else
1162
                                        idct_add   (ptr, h->mb + i*16, linesize);
1163
                                }
1164
                            }
1165
                        }
1166
                    }else{
1167
                        if(transform_bypass){
1168
                            idct_dc_add =
1169
                            idct_add    = s->dsp.add_pixels4;
1170
                        }else{
1171
                            idct_dc_add = h->h264dsp.h264_idct_dc_add;
1172
                            idct_add    = h->h264dsp.h264_idct_add;
1173
                        }
1174
                        for(i=0; i<16; i++){
1175
                            uint8_t * const ptr= dest_y + block_offset[i];
1176
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1177

    
1178
                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1179
                                h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
1180
                            }else{
1181
                                uint8_t *topright;
1182
                                int nnz, tr;
1183
                                if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
1184
                                    const int topright_avail= (h->topright_samples_available<<i)&0x8000;
1185
                                    assert(mb_y || linesize <= block_offset[i]);
1186
                                    if(!topright_avail){
1187
                                        tr= ptr[3 - linesize]*0x01010101;
1188
                                        topright= (uint8_t*) &tr;
1189
                                    }else
1190
                                        topright= ptr + 4 - linesize;
1191
                                }else
1192
                                    topright= NULL;
1193

    
1194
                                h->hpc.pred4x4[ dir ](ptr, topright, linesize);
1195
                                nnz = h->non_zero_count_cache[ scan8[i] ];
1196
                                if(nnz){
1197
                                    if(is_h264){
1198
                                        if(nnz == 1 && h->mb[i*16])
1199
                                            idct_dc_add(ptr, h->mb + i*16, linesize);
1200
                                        else
1201
                                            idct_add   (ptr, h->mb + i*16, linesize);
1202
                                    }else
1203
                                        ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
1204
                                }
1205
                            }
1206
                        }
1207
                    }
1208
                }
1209
            }else{
1210
                h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
1211
                if(is_h264){
1212
                    if(h->non_zero_count_cache[ scan8[LUMA_DC_BLOCK_INDEX] ]){
1213
                        if(!transform_bypass)
1214
                            h->h264dsp.h264_luma_dc_dequant_idct(h->mb, h->mb_luma_dc, h->dequant4_coeff[0][s->qscale][0]);
1215
                        else{
1216
                            static const uint8_t dc_mapping[16] = { 0*16, 1*16, 4*16, 5*16, 2*16, 3*16, 6*16, 7*16,
1217
                                                                    8*16, 9*16,12*16,13*16,10*16,11*16,14*16,15*16};
1218
                            for(i = 0; i < 16; i++)
1219
                                h->mb[dc_mapping[i]] = h->mb_luma_dc[i];
1220
                        }
1221
                    }
1222
                }else
1223
                    ff_svq3_luma_dc_dequant_idct_c(h->mb, h->mb_luma_dc, s->qscale);
1224
            }
1225
            if(h->deblocking_filter)
1226
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
1227
        }else if(is_h264){
1228
            hl_motion(h, dest_y, dest_cb, dest_cr,
1229
                      s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1230
                      s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1231
                      h->h264dsp.weight_h264_pixels_tab, h->h264dsp.biweight_h264_pixels_tab);
1232
        }
1233

    
1234

    
1235
        if(!IS_INTRA4x4(mb_type)){
1236
            if(is_h264){
1237
                if(IS_INTRA16x16(mb_type)){
1238
                    if(transform_bypass){
1239
                        if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
1240
                            h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
1241
                        }else{
1242
                            for(i=0; i<16; i++){
1243
                                if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1244
                                    s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
1245
                            }
1246
                        }
1247
                    }else{
1248
                         h->h264dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1249
                    }
1250
                }else if(h->cbp&15){
1251
                    if(transform_bypass){
1252
                        const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1253
                        idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
1254
                        for(i=0; i<16; i+=di){
1255
                            if(h->non_zero_count_cache[ scan8[i] ]){
1256
                                idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
1257
                            }
1258
                        }
1259
                    }else{
1260
                        if(IS_8x8DCT(mb_type)){
1261
                            h->h264dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1262
                        }else{
1263
                            h->h264dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1264
                        }
1265
                    }
1266
                }
1267
            }else{
1268
                for(i=0; i<16; i++){
1269
                    if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
1270
                        uint8_t * const ptr= dest_y + block_offset[i];
1271
                        ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1272
                    }
1273
                }
1274
            }
1275
        }
1276

    
1277
        if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
1278
            uint8_t *dest[2] = {dest_cb, dest_cr};
1279
            if(transform_bypass){
1280
                if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
1281
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
1282
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
1283
                }else{
1284
                    idct_add = s->dsp.add_pixels4;
1285
                    for(i=16; i<16+8; i++){
1286
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1287
                            idct_add   (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1288
                    }
1289
                }
1290
            }else{
1291
                if(is_h264){
1292
                    if(h->non_zero_count_cache[ scan8[CHROMA_DC_BLOCK_INDEX+0] ])
1293
                        chroma_dc_dequant_idct_c(h->mb + 16*16     , h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
1294
                    if(h->non_zero_count_cache[ scan8[CHROMA_DC_BLOCK_INDEX+1] ])
1295
                        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]);
1296
                    h->h264dsp.h264_idct_add8(dest, block_offset,
1297
                                              h->mb, uvlinesize,
1298
                                              h->non_zero_count_cache);
1299
                }else{
1300
                    chroma_dc_dequant_idct_c(h->mb + 16*16     , h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
1301
                    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]);
1302
                    for(i=16; i<16+8; i++){
1303
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
1304
                            uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
1305
                            ff_svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[s->qscale + 12] - 12, 2);
1306
                        }
1307
                    }
1308
                }
1309
            }
1310
        }
1311
    }
1312
    if(h->cbp || IS_INTRA(mb_type))
1313
        s->dsp.clear_blocks(h->mb);
1314
}
1315

    
1316
/**
1317
 * Process a macroblock; this case avoids checks for expensive uncommon cases.
1318
 */
1319
static void hl_decode_mb_simple(H264Context *h){
1320
    hl_decode_mb_internal(h, 1);
1321
}
1322

    
1323
/**
1324
 * Process a macroblock; this handles edge cases, such as interlacing.
1325
 */
1326
static void av_noinline hl_decode_mb_complex(H264Context *h){
1327
    hl_decode_mb_internal(h, 0);
1328
}
1329

    
1330
void ff_h264_hl_decode_mb(H264Context *h){
1331
    MpegEncContext * const s = &h->s;
1332
    const int mb_xy= h->mb_xy;
1333
    const int mb_type= s->current_picture.mb_type[mb_xy];
1334
    int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1335

    
1336
    if (is_complex)
1337
        hl_decode_mb_complex(h);
1338
    else hl_decode_mb_simple(h);
1339
}
1340

    
1341
static int pred_weight_table(H264Context *h){
1342
    MpegEncContext * const s = &h->s;
1343
    int list, i;
1344
    int luma_def, chroma_def;
1345

    
1346
    h->use_weight= 0;
1347
    h->use_weight_chroma= 0;
1348
    h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
1349
    if(CHROMA)
1350
        h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
1351
    luma_def = 1<<h->luma_log2_weight_denom;
1352
    chroma_def = 1<<h->chroma_log2_weight_denom;
1353

    
1354
    for(list=0; list<2; list++){
1355
        h->luma_weight_flag[list]   = 0;
1356
        h->chroma_weight_flag[list] = 0;
1357
        for(i=0; i<h->ref_count[list]; i++){
1358
            int luma_weight_flag, chroma_weight_flag;
1359

    
1360
            luma_weight_flag= get_bits1(&s->gb);
1361
            if(luma_weight_flag){
1362
                h->luma_weight[i][list][0]= get_se_golomb(&s->gb);
1363
                h->luma_weight[i][list][1]= get_se_golomb(&s->gb);
1364
                if(   h->luma_weight[i][list][0] != luma_def
1365
                   || h->luma_weight[i][list][1] != 0) {
1366
                    h->use_weight= 1;
1367
                    h->luma_weight_flag[list]= 1;
1368
                }
1369
            }else{
1370
                h->luma_weight[i][list][0]= luma_def;
1371
                h->luma_weight[i][list][1]= 0;
1372
            }
1373

    
1374
            if(CHROMA){
1375
                chroma_weight_flag= get_bits1(&s->gb);
1376
                if(chroma_weight_flag){
1377
                    int j;
1378
                    for(j=0; j<2; j++){
1379
                        h->chroma_weight[i][list][j][0]= get_se_golomb(&s->gb);
1380
                        h->chroma_weight[i][list][j][1]= get_se_golomb(&s->gb);
1381
                        if(   h->chroma_weight[i][list][j][0] != chroma_def
1382
                           || h->chroma_weight[i][list][j][1] != 0) {
1383
                            h->use_weight_chroma= 1;
1384
                            h->chroma_weight_flag[list]= 1;
1385
                        }
1386
                    }
1387
                }else{
1388
                    int j;
1389
                    for(j=0; j<2; j++){
1390
                        h->chroma_weight[i][list][j][0]= chroma_def;
1391
                        h->chroma_weight[i][list][j][1]= 0;
1392
                    }
1393
                }
1394
            }
1395
        }
1396
        if(h->slice_type_nos != FF_B_TYPE) break;
1397
    }
1398
    h->use_weight= h->use_weight || h->use_weight_chroma;
1399
    return 0;
1400
}
1401

    
1402
/**
1403
 * Initialize implicit_weight table.
1404
 * @param field  0/1 initialize the weight for interlaced MBAFF
1405
 *                -1 initializes the rest
1406
 */
1407
static void implicit_weight_table(H264Context *h, int field){
1408
    MpegEncContext * const s = &h->s;
1409
    int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
1410

    
1411
    for (i = 0; i < 2; i++) {
1412
        h->luma_weight_flag[i]   = 0;
1413
        h->chroma_weight_flag[i] = 0;
1414
    }
1415

    
1416
    if(field < 0){
1417
        cur_poc = s->current_picture_ptr->poc;
1418
    if(   h->ref_count[0] == 1 && h->ref_count[1] == 1 && !FRAME_MBAFF
1419
       && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
1420
        h->use_weight= 0;
1421
        h->use_weight_chroma= 0;
1422
        return;
1423
    }
1424
        ref_start= 0;
1425
        ref_count0= h->ref_count[0];
1426
        ref_count1= h->ref_count[1];
1427
    }else{
1428
        cur_poc = s->current_picture_ptr->field_poc[field];
1429
        ref_start= 16;
1430
        ref_count0= 16+2*h->ref_count[0];
1431
        ref_count1= 16+2*h->ref_count[1];
1432
    }
1433

    
1434
    h->use_weight= 2;
1435
    h->use_weight_chroma= 2;
1436
    h->luma_log2_weight_denom= 5;
1437
    h->chroma_log2_weight_denom= 5;
1438

    
1439
    for(ref0=ref_start; ref0 < ref_count0; ref0++){
1440
        int poc0 = h->ref_list[0][ref0].poc;
1441
        for(ref1=ref_start; ref1 < ref_count1; ref1++){
1442
            int poc1 = h->ref_list[1][ref1].poc;
1443
            int td = av_clip(poc1 - poc0, -128, 127);
1444
            int w= 32;
1445
            if(td){
1446
                int tb = av_clip(cur_poc - poc0, -128, 127);
1447
                int tx = (16384 + (FFABS(td) >> 1)) / td;
1448
                int dist_scale_factor = (tb*tx + 32) >> 8;
1449
                if(dist_scale_factor >= -64 && dist_scale_factor <= 128)
1450
                    w = 64 - dist_scale_factor;
1451
            }
1452
            if(field<0){
1453
                h->implicit_weight[ref0][ref1][0]=
1454
                h->implicit_weight[ref0][ref1][1]= w;
1455
            }else{
1456
                h->implicit_weight[ref0][ref1][field]=w;
1457
            }
1458
        }
1459
    }
1460
}
1461

    
1462
/**
1463
 * instantaneous decoder refresh.
1464
 */
1465
static void idr(H264Context *h){
1466
    ff_h264_remove_all_refs(h);
1467
    h->prev_frame_num= 0;
1468
    h->prev_frame_num_offset= 0;
1469
    h->prev_poc_msb=
1470
    h->prev_poc_lsb= 0;
1471
}
1472

    
1473
/* forget old pics after a seek */
1474
static void flush_dpb(AVCodecContext *avctx){
1475
    H264Context *h= avctx->priv_data;
1476
    int i;
1477
    for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
1478
        if(h->delayed_pic[i])
1479
            h->delayed_pic[i]->reference= 0;
1480
        h->delayed_pic[i]= NULL;
1481
    }
1482
    h->outputed_poc= INT_MIN;
1483
    h->prev_interlaced_frame = 1;
1484
    idr(h);
1485
    if(h->s.current_picture_ptr)
1486
        h->s.current_picture_ptr->reference= 0;
1487
    h->s.first_field= 0;
1488
    ff_h264_reset_sei(h);
1489
    ff_mpeg_flush(avctx);
1490
}
1491

    
1492
static int init_poc(H264Context *h){
1493
    MpegEncContext * const s = &h->s;
1494
    const int max_frame_num= 1<<h->sps.log2_max_frame_num;
1495
    int field_poc[2];
1496
    Picture *cur = s->current_picture_ptr;
1497

    
1498
    h->frame_num_offset= h->prev_frame_num_offset;
1499
    if(h->frame_num < h->prev_frame_num)
1500
        h->frame_num_offset += max_frame_num;
1501

    
1502
    if(h->sps.poc_type==0){
1503
        const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
1504

    
1505
        if     (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
1506
            h->poc_msb = h->prev_poc_msb + max_poc_lsb;
1507
        else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
1508
            h->poc_msb = h->prev_poc_msb - max_poc_lsb;
1509
        else
1510
            h->poc_msb = h->prev_poc_msb;
1511
//printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
1512
        field_poc[0] =
1513
        field_poc[1] = h->poc_msb + h->poc_lsb;
1514
        if(s->picture_structure == PICT_FRAME)
1515
            field_poc[1] += h->delta_poc_bottom;
1516
    }else if(h->sps.poc_type==1){
1517
        int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
1518
        int i;
1519

    
1520
        if(h->sps.poc_cycle_length != 0)
1521
            abs_frame_num = h->frame_num_offset + h->frame_num;
1522
        else
1523
            abs_frame_num = 0;
1524

    
1525
        if(h->nal_ref_idc==0 && abs_frame_num > 0)
1526
            abs_frame_num--;
1527

    
1528
        expected_delta_per_poc_cycle = 0;
1529
        for(i=0; i < h->sps.poc_cycle_length; i++)
1530
            expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
1531

    
1532
        if(abs_frame_num > 0){
1533
            int poc_cycle_cnt          = (abs_frame_num - 1) / h->sps.poc_cycle_length;
1534
            int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
1535

    
1536
            expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
1537
            for(i = 0; i <= frame_num_in_poc_cycle; i++)
1538
                expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
1539
        } else
1540
            expectedpoc = 0;
1541

    
1542
        if(h->nal_ref_idc == 0)
1543
            expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
1544

    
1545
        field_poc[0] = expectedpoc + h->delta_poc[0];
1546
        field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
1547

    
1548
        if(s->picture_structure == PICT_FRAME)
1549
            field_poc[1] += h->delta_poc[1];
1550
    }else{
1551
        int poc= 2*(h->frame_num_offset + h->frame_num);
1552

    
1553
        if(!h->nal_ref_idc)
1554
            poc--;
1555

    
1556
        field_poc[0]= poc;
1557
        field_poc[1]= poc;
1558
    }
1559

    
1560
    if(s->picture_structure != PICT_BOTTOM_FIELD)
1561
        s->current_picture_ptr->field_poc[0]= field_poc[0];
1562
    if(s->picture_structure != PICT_TOP_FIELD)
1563
        s->current_picture_ptr->field_poc[1]= field_poc[1];
1564
    cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
1565

    
1566
    return 0;
1567
}
1568

    
1569

    
1570
/**
1571
 * initialize scan tables
1572
 */
1573
static void init_scan_tables(H264Context *h){
1574
    int i;
1575
    for(i=0; i<16; i++){
1576
#define T(x) (x>>2) | ((x<<2) & 0xF)
1577
        h->zigzag_scan[i] = T(zigzag_scan[i]);
1578
        h-> field_scan[i] = T( field_scan[i]);
1579
#undef T
1580
    }
1581
    for(i=0; i<64; i++){
1582
#define T(x) (x>>3) | ((x&7)<<3)
1583
        h->zigzag_scan8x8[i]       = T(ff_zigzag_direct[i]);
1584
        h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
1585
        h->field_scan8x8[i]        = T(field_scan8x8[i]);
1586
        h->field_scan8x8_cavlc[i]  = T(field_scan8x8_cavlc[i]);
1587
#undef T
1588
    }
1589
    if(h->sps.transform_bypass){ //FIXME same ugly
1590
        h->zigzag_scan_q0          = zigzag_scan;
1591
        h->zigzag_scan8x8_q0       = ff_zigzag_direct;
1592
        h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
1593
        h->field_scan_q0           = field_scan;
1594
        h->field_scan8x8_q0        = field_scan8x8;
1595
        h->field_scan8x8_cavlc_q0  = field_scan8x8_cavlc;
1596
    }else{
1597
        h->zigzag_scan_q0          = h->zigzag_scan;
1598
        h->zigzag_scan8x8_q0       = h->zigzag_scan8x8;
1599
        h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
1600
        h->field_scan_q0           = h->field_scan;
1601
        h->field_scan8x8_q0        = h->field_scan8x8;
1602
        h->field_scan8x8_cavlc_q0  = h->field_scan8x8_cavlc;
1603
    }
1604
}
1605

    
1606
static void field_end(H264Context *h){
1607
    MpegEncContext * const s = &h->s;
1608
    AVCodecContext * const avctx= s->avctx;
1609
    s->mb_y= 0;
1610

    
1611
    s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
1612
    s->current_picture_ptr->pict_type= s->pict_type;
1613

    
1614
    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1615
        ff_vdpau_h264_set_reference_frames(s);
1616

    
1617
    if(!s->dropable) {
1618
        ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1619
        h->prev_poc_msb= h->poc_msb;
1620
        h->prev_poc_lsb= h->poc_lsb;
1621
    }
1622
    h->prev_frame_num_offset= h->frame_num_offset;
1623
    h->prev_frame_num= h->frame_num;
1624

    
1625
    if (avctx->hwaccel) {
1626
        if (avctx->hwaccel->end_frame(avctx) < 0)
1627
            av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
1628
    }
1629

    
1630
    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1631
        ff_vdpau_h264_picture_complete(s);
1632

    
1633
    /*
1634
     * FIXME: Error handling code does not seem to support interlaced
1635
     * when slices span multiple rows
1636
     * The ff_er_add_slice calls don't work right for bottom
1637
     * fields; they cause massive erroneous error concealing
1638
     * Error marking covers both fields (top and bottom).
1639
     * This causes a mismatched s->error_count
1640
     * and a bad error table. Further, the error count goes to
1641
     * INT_MAX when called for bottom field, because mb_y is
1642
     * past end by one (callers fault) and resync_mb_y != 0
1643
     * causes problems for the first MB line, too.
1644
     */
1645
    if (!FIELD_PICTURE)
1646
        ff_er_frame_end(s);
1647

    
1648
    MPV_frame_end(s);
1649

    
1650
    h->current_slice=0;
1651
}
1652

    
1653
/**
1654
 * Replicate H264 "master" context to thread contexts.
1655
 */
1656
static void clone_slice(H264Context *dst, H264Context *src)
1657
{
1658
    memcpy(dst->block_offset,     src->block_offset, sizeof(dst->block_offset));
1659
    dst->s.current_picture_ptr  = src->s.current_picture_ptr;
1660
    dst->s.current_picture      = src->s.current_picture;
1661
    dst->s.linesize             = src->s.linesize;
1662
    dst->s.uvlinesize           = src->s.uvlinesize;
1663
    dst->s.first_field          = src->s.first_field;
1664

    
1665
    dst->prev_poc_msb           = src->prev_poc_msb;
1666
    dst->prev_poc_lsb           = src->prev_poc_lsb;
1667
    dst->prev_frame_num_offset  = src->prev_frame_num_offset;
1668
    dst->prev_frame_num         = src->prev_frame_num;
1669
    dst->short_ref_count        = src->short_ref_count;
1670

    
1671
    memcpy(dst->short_ref,        src->short_ref,        sizeof(dst->short_ref));
1672
    memcpy(dst->long_ref,         src->long_ref,         sizeof(dst->long_ref));
1673
    memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
1674
    memcpy(dst->ref_list,         src->ref_list,         sizeof(dst->ref_list));
1675

    
1676
    memcpy(dst->dequant4_coeff,   src->dequant4_coeff,   sizeof(src->dequant4_coeff));
1677
    memcpy(dst->dequant8_coeff,   src->dequant8_coeff,   sizeof(src->dequant8_coeff));
1678
}
1679

    
1680
/**
1681
 * decodes a slice header.
1682
 * This will also call MPV_common_init() and frame_start() as needed.
1683
 *
1684
 * @param h h264context
1685
 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
1686
 *
1687
 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
1688
 */
1689
static int decode_slice_header(H264Context *h, H264Context *h0){
1690
    MpegEncContext * const s = &h->s;
1691
    MpegEncContext * const s0 = &h0->s;
1692
    unsigned int first_mb_in_slice;
1693
    unsigned int pps_id;
1694
    int num_ref_idx_active_override_flag;
1695
    unsigned int slice_type, tmp, i, j;
1696
    int default_ref_list_done = 0;
1697
    int last_pic_structure;
1698

    
1699
    s->dropable= h->nal_ref_idc == 0;
1700

    
1701
    if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
1702
        s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
1703
        s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
1704
    }else{
1705
        s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
1706
        s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
1707
    }
1708

    
1709
    first_mb_in_slice= get_ue_golomb(&s->gb);
1710

    
1711
    if(first_mb_in_slice == 0){ //FIXME better field boundary detection
1712
        if(h0->current_slice && FIELD_PICTURE){
1713
            field_end(h);
1714
        }
1715

    
1716
        h0->current_slice = 0;
1717
        if (!s0->first_field)
1718
            s->current_picture_ptr= NULL;
1719
    }
1720

    
1721
    slice_type= get_ue_golomb_31(&s->gb);
1722
    if(slice_type > 9){
1723
        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);
1724
        return -1;
1725
    }
1726
    if(slice_type > 4){
1727
        slice_type -= 5;
1728
        h->slice_type_fixed=1;
1729
    }else
1730
        h->slice_type_fixed=0;
1731

    
1732
    slice_type= golomb_to_pict_type[ slice_type ];
1733
    if (slice_type == FF_I_TYPE
1734
        || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
1735
        default_ref_list_done = 1;
1736
    }
1737
    h->slice_type= slice_type;
1738
    h->slice_type_nos= slice_type & 3;
1739

    
1740
    s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
1741

    
1742
    pps_id= get_ue_golomb(&s->gb);
1743
    if(pps_id>=MAX_PPS_COUNT){
1744
        av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
1745
        return -1;
1746
    }
1747
    if(!h0->pps_buffers[pps_id]) {
1748
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
1749
        return -1;
1750
    }
1751
    h->pps= *h0->pps_buffers[pps_id];
1752

    
1753
    if(!h0->sps_buffers[h->pps.sps_id]) {
1754
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
1755
        return -1;
1756
    }
1757
    h->sps = *h0->sps_buffers[h->pps.sps_id];
1758

    
1759
    s->avctx->profile = h->sps.profile_idc;
1760
    s->avctx->level   = h->sps.level_idc;
1761
    s->avctx->refs    = h->sps.ref_frame_count;
1762

    
1763
    if(h == h0 && h->dequant_coeff_pps != pps_id){
1764
        h->dequant_coeff_pps = pps_id;
1765
        init_dequant_tables(h);
1766
    }
1767

    
1768
    s->mb_width= h->sps.mb_width;
1769
    s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
1770

    
1771
    h->b_stride=  s->mb_width*4;
1772

    
1773
    s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
1774
    if(h->sps.frame_mbs_only_flag)
1775
        s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
1776
    else
1777
        s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 7);
1778

    
1779
    if (s->context_initialized
1780
        && (   s->width != s->avctx->width || s->height != s->avctx->height
1781
            || av_cmp_q(h->sps.sar, s->avctx->sample_aspect_ratio))) {
1782
        if(h != h0)
1783
            return -1;   // width / height changed during parallelized decoding
1784
        free_tables(h, 0);
1785
        flush_dpb(s->avctx);
1786
        MPV_common_end(s);
1787
    }
1788
    if (!s->context_initialized) {
1789
        if(h != h0)
1790
            return -1;  // we cant (re-)initialize context during parallel decoding
1791

    
1792
        avcodec_set_dimensions(s->avctx, s->width, s->height);
1793
        s->avctx->sample_aspect_ratio= h->sps.sar;
1794
        av_assert0(s->avctx->sample_aspect_ratio.den);
1795

    
1796
        if(h->sps.video_signal_type_present_flag){
1797
            s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
1798
            if(h->sps.colour_description_present_flag){
1799
                s->avctx->color_primaries = h->sps.color_primaries;
1800
                s->avctx->color_trc       = h->sps.color_trc;
1801
                s->avctx->colorspace      = h->sps.colorspace;
1802
            }
1803
        }
1804

    
1805
        if(h->sps.timing_info_present_flag){
1806
            int64_t den= h->sps.time_scale;
1807
            if(h->x264_build < 44U)
1808
                den *= 2;
1809
            av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
1810
                      h->sps.num_units_in_tick, den, 1<<30);
1811
        }
1812
        s->avctx->pix_fmt = s->avctx->get_format(s->avctx,
1813
                                                 s->avctx->codec->pix_fmts ?
1814
                                                 s->avctx->codec->pix_fmts :
1815
                                                 s->avctx->color_range == AVCOL_RANGE_JPEG ?
1816
                                                 hwaccel_pixfmt_list_h264_jpeg_420 :
1817
                                                 ff_hwaccel_pixfmt_list_420);
1818
        s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
1819

    
1820
        if (MPV_common_init(s) < 0)
1821
            return -1;
1822
        s->first_field = 0;
1823
        h->prev_interlaced_frame = 1;
1824

    
1825
        init_scan_tables(h);
1826
        ff_h264_alloc_tables(h);
1827

    
1828
        for(i = 1; i < s->avctx->thread_count; i++) {
1829
            H264Context *c;
1830
            c = h->thread_context[i] = av_malloc(sizeof(H264Context));
1831
            memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
1832
            memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
1833
            c->h264dsp = h->h264dsp;
1834
            c->sps = h->sps;
1835
            c->pps = h->pps;
1836
            init_scan_tables(c);
1837
            clone_tables(c, h, i);
1838
        }
1839

    
1840
        for(i = 0; i < s->avctx->thread_count; i++)
1841
            if(context_init(h->thread_context[i]) < 0)
1842
                return -1;
1843
    }
1844

    
1845
    h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
1846

    
1847
    h->mb_mbaff = 0;
1848
    h->mb_aff_frame = 0;
1849
    last_pic_structure = s0->picture_structure;
1850
    if(h->sps.frame_mbs_only_flag){
1851
        s->picture_structure= PICT_FRAME;
1852
    }else{
1853
        if(get_bits1(&s->gb)) { //field_pic_flag
1854
            s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
1855
        } else {
1856
            s->picture_structure= PICT_FRAME;
1857
            h->mb_aff_frame = h->sps.mb_aff;
1858
        }
1859
    }
1860
    h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
1861

    
1862
    if(h0->current_slice == 0){
1863
        while(h->frame_num !=  h->prev_frame_num &&
1864
              h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
1865
            Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
1866
            av_log(h->s.avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
1867
            if (ff_h264_frame_start(h) < 0)
1868
                return -1;
1869
            h->prev_frame_num++;
1870
            h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
1871
            s->current_picture_ptr->frame_num= h->prev_frame_num;
1872
            ff_generate_sliding_window_mmcos(h);
1873
            ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1874
            /* Error concealment: if a ref is missing, copy the previous ref in its place.
1875
             * FIXME: avoiding a memcpy would be nice, but ref handling makes many assumptions
1876
             * about there being no actual duplicates.
1877
             * FIXME: this doesn't copy padding for out-of-frame motion vectors.  Given we're
1878
             * concealing a lost frame, this probably isn't noticable by comparison, but it should
1879
             * be fixed. */
1880
            if (h->short_ref_count) {
1881
                if (prev) {
1882
                    av_image_copy(h->short_ref[0]->data, h->short_ref[0]->linesize,
1883
                                  (const uint8_t**)prev->data, prev->linesize,
1884
                                  s->avctx->pix_fmt, s->mb_width*16, s->mb_height*16);
1885
                    h->short_ref[0]->poc = prev->poc+2;
1886
                }
1887
                h->short_ref[0]->frame_num = h->prev_frame_num;
1888
            }
1889
        }
1890

    
1891
        /* See if we have a decoded first field looking for a pair... */
1892
        if (s0->first_field) {
1893
            assert(s0->current_picture_ptr);
1894
            assert(s0->current_picture_ptr->data[0]);
1895
            assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
1896

    
1897
            /* figure out if we have a complementary field pair */
1898
            if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
1899
                /*
1900
                 * Previous field is unmatched. Don't display it, but let it
1901
                 * remain for reference if marked as such.
1902
                 */
1903
                s0->current_picture_ptr = NULL;
1904
                s0->first_field = FIELD_PICTURE;
1905

    
1906
            } else {
1907
                if (h->nal_ref_idc &&
1908
                        s0->current_picture_ptr->reference &&
1909
                        s0->current_picture_ptr->frame_num != h->frame_num) {
1910
                    /*
1911
                     * This and previous field were reference, but had
1912
                     * different frame_nums. Consider this field first in
1913
                     * pair. Throw away previous field except for reference
1914
                     * purposes.
1915
                     */
1916
                    s0->first_field = 1;
1917
                    s0->current_picture_ptr = NULL;
1918

    
1919
                } else {
1920
                    /* Second field in complementary pair */
1921
                    s0->first_field = 0;
1922
                }
1923
            }
1924

    
1925
        } else {
1926
            /* Frame or first field in a potentially complementary pair */
1927
            assert(!s0->current_picture_ptr);
1928
            s0->first_field = FIELD_PICTURE;
1929
        }
1930

    
1931
        if((!FIELD_PICTURE || s0->first_field) && ff_h264_frame_start(h) < 0) {
1932
            s0->first_field = 0;
1933
            return -1;
1934
        }
1935
    }
1936
    if(h != h0)
1937
        clone_slice(h, h0);
1938

    
1939
    s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
1940

    
1941
    assert(s->mb_num == s->mb_width * s->mb_height);
1942
    if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
1943
       first_mb_in_slice                    >= s->mb_num){
1944
        av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1945
        return -1;
1946
    }
1947
    s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
1948
    s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
1949
    if (s->picture_structure == PICT_BOTTOM_FIELD)
1950
        s->resync_mb_y = s->mb_y = s->mb_y + 1;
1951
    assert(s->mb_y < s->mb_height);
1952

    
1953
    if(s->picture_structure==PICT_FRAME){
1954
        h->curr_pic_num=   h->frame_num;
1955
        h->max_pic_num= 1<< h->sps.log2_max_frame_num;
1956
    }else{
1957
        h->curr_pic_num= 2*h->frame_num + 1;
1958
        h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
1959
    }
1960

    
1961
    if(h->nal_unit_type == NAL_IDR_SLICE){
1962
        get_ue_golomb(&s->gb); /* idr_pic_id */
1963
    }
1964

    
1965
    if(h->sps.poc_type==0){
1966
        h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
1967

    
1968
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
1969
            h->delta_poc_bottom= get_se_golomb(&s->gb);
1970
        }
1971
    }
1972

    
1973
    if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
1974
        h->delta_poc[0]= get_se_golomb(&s->gb);
1975

    
1976
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
1977
            h->delta_poc[1]= get_se_golomb(&s->gb);
1978
    }
1979

    
1980
    init_poc(h);
1981

    
1982
    if(h->pps.redundant_pic_cnt_present){
1983
        h->redundant_pic_count= get_ue_golomb(&s->gb);
1984
    }
1985

    
1986
    //set defaults, might be overridden a few lines later
1987
    h->ref_count[0]= h->pps.ref_count[0];
1988
    h->ref_count[1]= h->pps.ref_count[1];
1989

    
1990
    if(h->slice_type_nos != FF_I_TYPE){
1991
        if(h->slice_type_nos == FF_B_TYPE){
1992
            h->direct_spatial_mv_pred= get_bits1(&s->gb);
1993
        }
1994
        num_ref_idx_active_override_flag= get_bits1(&s->gb);
1995

    
1996
        if(num_ref_idx_active_override_flag){
1997
            h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
1998
            if(h->slice_type_nos==FF_B_TYPE)
1999
                h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
2000

    
2001
            if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
2002
                av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
2003
                h->ref_count[0]= h->ref_count[1]= 1;
2004
                return -1;
2005
            }
2006
        }
2007
        if(h->slice_type_nos == FF_B_TYPE)
2008
            h->list_count= 2;
2009
        else
2010
            h->list_count= 1;
2011
    }else
2012
        h->list_count= 0;
2013

    
2014
    if(!default_ref_list_done){
2015
        ff_h264_fill_default_ref_list(h);
2016
    }
2017

    
2018
    if(h->slice_type_nos!=FF_I_TYPE && ff_h264_decode_ref_pic_list_reordering(h) < 0)
2019
        return -1;
2020

    
2021
    if(h->slice_type_nos!=FF_I_TYPE){
2022
        s->last_picture_ptr= &h->ref_list[0][0];
2023
        ff_copy_picture(&s->last_picture, s->last_picture_ptr);
2024
    }
2025
    if(h->slice_type_nos==FF_B_TYPE){
2026
        s->next_picture_ptr= &h->ref_list[1][0];
2027
        ff_copy_picture(&s->next_picture, s->next_picture_ptr);
2028
    }
2029

    
2030
    if(   (h->pps.weighted_pred          && h->slice_type_nos == FF_P_TYPE )
2031
       ||  (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
2032
        pred_weight_table(h);
2033
    else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE){
2034
        implicit_weight_table(h, -1);
2035
    }else {
2036
        h->use_weight = 0;
2037
        for (i = 0; i < 2; i++) {
2038
            h->luma_weight_flag[i]   = 0;
2039
            h->chroma_weight_flag[i] = 0;
2040
        }
2041
    }
2042

    
2043
    if(h->nal_ref_idc)
2044
        ff_h264_decode_ref_pic_marking(h0, &s->gb);
2045

    
2046
    if(FRAME_MBAFF){
2047
        ff_h264_fill_mbaff_ref_list(h);
2048

    
2049
        if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE){
2050
            implicit_weight_table(h, 0);
2051
            implicit_weight_table(h, 1);
2052
        }
2053
    }
2054

    
2055
    if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
2056
        ff_h264_direct_dist_scale_factor(h);
2057
    ff_h264_direct_ref_list_init(h);
2058

    
2059
    if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
2060
        tmp = get_ue_golomb_31(&s->gb);
2061
        if(tmp > 2){
2062
            av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
2063
            return -1;
2064
        }
2065
        h->cabac_init_idc= tmp;
2066
    }
2067

    
2068
    h->last_qscale_diff = 0;
2069
    tmp = h->pps.init_qp + get_se_golomb(&s->gb);
2070
    if(tmp>51){
2071
        av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
2072
        return -1;
2073
    }
2074
    s->qscale= tmp;
2075
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2076
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2077
    //FIXME qscale / qp ... stuff
2078
    if(h->slice_type == FF_SP_TYPE){
2079
        get_bits1(&s->gb); /* sp_for_switch_flag */
2080
    }
2081
    if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
2082
        get_se_golomb(&s->gb); /* slice_qs_delta */
2083
    }
2084

    
2085
    h->deblocking_filter = 1;
2086
    h->slice_alpha_c0_offset = 52;
2087
    h->slice_beta_offset = 52;
2088
    if( h->pps.deblocking_filter_parameters_present ) {
2089
        tmp= get_ue_golomb_31(&s->gb);
2090
        if(tmp > 2){
2091
            av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
2092
            return -1;
2093
        }
2094
        h->deblocking_filter= tmp;
2095
        if(h->deblocking_filter < 2)
2096
            h->deblocking_filter^= 1; // 1<->0
2097

    
2098
        if( h->deblocking_filter ) {
2099
            h->slice_alpha_c0_offset += get_se_golomb(&s->gb) << 1;
2100
            h->slice_beta_offset     += get_se_golomb(&s->gb) << 1;
2101
            if(   h->slice_alpha_c0_offset > 104U
2102
               || h->slice_beta_offset     > 104U){
2103
                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);
2104
                return -1;
2105
            }
2106
        }
2107
    }
2108

    
2109
    if(   s->avctx->skip_loop_filter >= AVDISCARD_ALL
2110
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
2111
       ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR  && h->slice_type_nos == FF_B_TYPE)
2112
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2113
        h->deblocking_filter= 0;
2114

    
2115
    if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
2116
        if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
2117
            /* Cheat slightly for speed:
2118
               Do not bother to deblock across slices. */
2119
            h->deblocking_filter = 2;
2120
        } else {
2121
            h0->max_contexts = 1;
2122
            if(!h0->single_decode_warning) {
2123
                av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
2124
                h0->single_decode_warning = 1;
2125
            }
2126
            if(h != h0)
2127
                return 1; // deblocking switched inside frame
2128
        }
2129
    }
2130
    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]);
2131

    
2132
#if 0 //FMO
2133
    if( h->pps.num_slice_groups > 1  && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
2134
        slice_group_change_cycle= get_bits(&s->gb, ?);
2135
#endif
2136

    
2137
    h0->last_slice_type = slice_type;
2138
    h->slice_num = ++h0->current_slice;
2139
    if(h->slice_num >= MAX_SLICES){
2140
        av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
2141
    }
2142

    
2143
    for(j=0; j<2; j++){
2144
        int id_list[16];
2145
        int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
2146
        for(i=0; i<16; i++){
2147
            id_list[i]= 60;
2148
            if(h->ref_list[j][i].data[0]){
2149
                int k;
2150
                uint8_t *base= h->ref_list[j][i].base[0];
2151
                for(k=0; k<h->short_ref_count; k++)
2152
                    if(h->short_ref[k]->base[0] == base){
2153
                        id_list[i]= k;
2154
                        break;
2155
                    }
2156
                for(k=0; k<h->long_ref_count; k++)
2157
                    if(h->long_ref[k] && h->long_ref[k]->base[0] == base){
2158
                        id_list[i]= h->short_ref_count + k;
2159
                        break;
2160
                    }
2161
            }
2162
        }
2163

    
2164
        ref2frm[0]=
2165
        ref2frm[1]= -1;
2166
        for(i=0; i<16; i++)
2167
            ref2frm[i+2]= 4*id_list[i]
2168
                          +(h->ref_list[j][i].reference&3);
2169
        ref2frm[18+0]=
2170
        ref2frm[18+1]= -1;
2171
        for(i=16; i<48; i++)
2172
            ref2frm[i+4]= 4*id_list[(i-16)>>1]
2173
                          +(h->ref_list[j][i].reference&3);
2174
    }
2175

    
2176
    h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
2177
    h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
2178

    
2179
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
2180
        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",
2181
               h->slice_num,
2182
               (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
2183
               first_mb_in_slice,
2184
               av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
2185
               pps_id, h->frame_num,
2186
               s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
2187
               h->ref_count[0], h->ref_count[1],
2188
               s->qscale,
2189
               h->deblocking_filter, h->slice_alpha_c0_offset/2-26, h->slice_beta_offset/2-26,
2190
               h->use_weight,
2191
               h->use_weight==1 && h->use_weight_chroma ? "c" : "",
2192
               h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
2193
               );
2194
    }
2195

    
2196
    return 0;
2197
}
2198

    
2199
int ff_h264_get_slice_type(const H264Context *h)
2200
{
2201
    switch (h->slice_type) {
2202
    case FF_P_TYPE:  return 0;
2203
    case FF_B_TYPE:  return 1;
2204
    case FF_I_TYPE:  return 2;
2205
    case FF_SP_TYPE: return 3;
2206
    case FF_SI_TYPE: return 4;
2207
    default:         return -1;
2208
    }
2209
}
2210

    
2211
/**
2212
 *
2213
 * @return non zero if the loop filter can be skiped
2214
 */
2215
static int fill_filter_caches(H264Context *h, int mb_type){
2216
    MpegEncContext * const s = &h->s;
2217
    const int mb_xy= h->mb_xy;
2218
    int top_xy, left_xy[2];
2219
    int top_type, left_type[2];
2220

    
2221
    top_xy     = mb_xy  - (s->mb_stride << MB_FIELD);
2222

    
2223
    //FIXME deblocking could skip the intra and nnz parts.
2224

    
2225
    /* Wow, what a mess, why didn't they simplify the interlacing & intra
2226
     * stuff, I can't imagine that these complex rules are worth it. */
2227

    
2228
    left_xy[1] = left_xy[0] = mb_xy-1;
2229
    if(FRAME_MBAFF){
2230
        const int left_mb_field_flag     = IS_INTERLACED(s->current_picture.mb_type[mb_xy-1]);
2231
        const int curr_mb_field_flag     = IS_INTERLACED(mb_type);
2232
        if(s->mb_y&1){
2233
            if (left_mb_field_flag != curr_mb_field_flag) {
2234
                left_xy[0] -= s->mb_stride;
2235
            }
2236
        }else{
2237
            if(curr_mb_field_flag){
2238
                top_xy      += s->mb_stride & (((s->current_picture.mb_type[top_xy    ]>>7)&1)-1);
2239
            }
2240
            if (left_mb_field_flag != curr_mb_field_flag) {
2241
                left_xy[1] += s->mb_stride;
2242
            }
2243
        }
2244
    }
2245

    
2246
    h->top_mb_xy = top_xy;
2247
    h->left_mb_xy[0] = left_xy[0];
2248
    h->left_mb_xy[1] = left_xy[1];
2249
    {
2250
        //for sufficiently low qp, filtering wouldn't do anything
2251
        //this is a conservative estimate: could also check beta_offset and more accurate chroma_qp
2252
        int qp_thresh = h->qp_thresh; //FIXME strictly we should store qp_thresh for each mb of a slice
2253
        int qp = s->current_picture.qscale_table[mb_xy];
2254
        if(qp <= qp_thresh
2255
           && (left_xy[0]<0 || ((qp + s->current_picture.qscale_table[left_xy[0]] + 1)>>1) <= qp_thresh)
2256
           && (top_xy   < 0 || ((qp + s->current_picture.qscale_table[top_xy    ] + 1)>>1) <= qp_thresh)){
2257
            if(!FRAME_MBAFF)
2258
                return 1;
2259
            if(   (left_xy[0]< 0            || ((qp + s->current_picture.qscale_table[left_xy[1]             ] + 1)>>1) <= qp_thresh)
2260
               && (top_xy    < s->mb_stride || ((qp + s->current_picture.qscale_table[top_xy    -s->mb_stride] + 1)>>1) <= qp_thresh))
2261
                return 1;
2262
        }
2263
    }
2264

    
2265
    top_type     = s->current_picture.mb_type[top_xy]    ;
2266
    left_type[0] = s->current_picture.mb_type[left_xy[0]];
2267
    left_type[1] = s->current_picture.mb_type[left_xy[1]];
2268
    if(h->deblocking_filter == 2){
2269
        if(h->slice_table[top_xy     ] != h->slice_num) top_type= 0;
2270
        if(h->slice_table[left_xy[0] ] != h->slice_num) left_type[0]= left_type[1]= 0;
2271
    }else{
2272
        if(h->slice_table[top_xy     ] == 0xFFFF) top_type= 0;
2273
        if(h->slice_table[left_xy[0] ] == 0xFFFF) left_type[0]= left_type[1] =0;
2274
    }
2275
    h->top_type    = top_type    ;
2276
    h->left_type[0]= left_type[0];
2277
    h->left_type[1]= left_type[1];
2278

    
2279
    if(IS_INTRA(mb_type))
2280
        return 0;
2281

    
2282
    AV_COPY64(&h->non_zero_count_cache[0+8*1], &h->non_zero_count[mb_xy][ 0]);
2283
    AV_COPY64(&h->non_zero_count_cache[0+8*2], &h->non_zero_count[mb_xy][ 8]);
2284
    AV_COPY32(&h->non_zero_count_cache[0+8*5], &h->non_zero_count[mb_xy][16]);
2285
    AV_COPY32(&h->non_zero_count_cache[4+8*3], &h->non_zero_count[mb_xy][20]);
2286
    AV_COPY64(&h->non_zero_count_cache[0+8*4], &h->non_zero_count[mb_xy][24]);
2287

    
2288
    h->cbp= h->cbp_table[mb_xy];
2289

    
2290
    {
2291
        int list;
2292
        for(list=0; list<h->list_count; list++){
2293
            int8_t *ref;
2294
            int y, b_stride;
2295
            int16_t (*mv_dst)[2];
2296
            int16_t (*mv_src)[2];
2297

    
2298
            if(!USES_LIST(mb_type, list)){
2299
                fill_rectangle(  h->mv_cache[list][scan8[0]], 4, 4, 8, pack16to32(0,0), 4);
2300
                AV_WN32A(&h->ref_cache[list][scan8[ 0]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2301
                AV_WN32A(&h->ref_cache[list][scan8[ 2]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2302
                AV_WN32A(&h->ref_cache[list][scan8[ 8]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2303
                AV_WN32A(&h->ref_cache[list][scan8[10]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2304
                continue;
2305
            }
2306

    
2307
            ref = &s->current_picture.ref_index[list][4*mb_xy];
2308
            {
2309
                int (*ref2frm)[64] = h->ref2frm[ h->slice_num&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2310
                AV_WN32A(&h->ref_cache[list][scan8[ 0]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2311
                AV_WN32A(&h->ref_cache[list][scan8[ 2]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2312
                ref += 2;
2313
                AV_WN32A(&h->ref_cache[list][scan8[ 8]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2314
                AV_WN32A(&h->ref_cache[list][scan8[10]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2315
            }
2316

    
2317
            b_stride = h->b_stride;
2318
            mv_dst   = &h->mv_cache[list][scan8[0]];
2319
            mv_src   = &s->current_picture.motion_val[list][4*s->mb_x + 4*s->mb_y*b_stride];
2320
            for(y=0; y<4; y++){
2321
                AV_COPY128(mv_dst + 8*y, mv_src + y*b_stride);
2322
            }
2323

    
2324
        }
2325
    }
2326

    
2327

    
2328
/*
2329
0 . T T. T T T T
2330
1 L . .L . . . .
2331
2 L . .L . . . .
2332
3 . T TL . . . .
2333
4 L . .L . . . .
2334
5 L . .. . . . .
2335
*/
2336
//FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
2337
    if(top_type){
2338
        AV_COPY32(&h->non_zero_count_cache[4+8*0], &h->non_zero_count[top_xy][4+3*8]);
2339
    }
2340

    
2341
    if(left_type[0]){
2342
        h->non_zero_count_cache[3+8*1]= h->non_zero_count[left_xy[0]][7+0*8];
2343
        h->non_zero_count_cache[3+8*2]= h->non_zero_count[left_xy[0]][7+1*8];
2344
        h->non_zero_count_cache[3+8*3]= h->non_zero_count[left_xy[0]][7+2*8];
2345
        h->non_zero_count_cache[3+8*4]= h->non_zero_count[left_xy[0]][7+3*8];
2346
    }
2347

    
2348
    // CAVLC 8x8dct requires NNZ values for residual decoding that differ from what the loop filter needs
2349
    if(!CABAC && h->pps.transform_8x8_mode){
2350
        if(IS_8x8DCT(top_type)){
2351
            h->non_zero_count_cache[4+8*0]=
2352
            h->non_zero_count_cache[5+8*0]= h->cbp_table[top_xy] & 4;
2353
            h->non_zero_count_cache[6+8*0]=
2354
            h->non_zero_count_cache[7+8*0]= h->cbp_table[top_xy] & 8;
2355
        }
2356
        if(IS_8x8DCT(left_type[0])){
2357
            h->non_zero_count_cache[3+8*1]=
2358
            h->non_zero_count_cache[3+8*2]= h->cbp_table[left_xy[0]]&2; //FIXME check MBAFF
2359
        }
2360
        if(IS_8x8DCT(left_type[1])){
2361
            h->non_zero_count_cache[3+8*3]=
2362
            h->non_zero_count_cache[3+8*4]= h->cbp_table[left_xy[1]]&8; //FIXME check MBAFF
2363
        }
2364

    
2365
        if(IS_8x8DCT(mb_type)){
2366
            h->non_zero_count_cache[scan8[0   ]]= h->non_zero_count_cache[scan8[1   ]]=
2367
            h->non_zero_count_cache[scan8[2   ]]= h->non_zero_count_cache[scan8[3   ]]= h->cbp & 1;
2368

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

    
2372
            h->non_zero_count_cache[scan8[0+ 8]]= h->non_zero_count_cache[scan8[1+ 8]]=
2373
            h->non_zero_count_cache[scan8[2+ 8]]= h->non_zero_count_cache[scan8[3+ 8]]= h->cbp & 4;
2374

    
2375
            h->non_zero_count_cache[scan8[0+12]]= h->non_zero_count_cache[scan8[1+12]]=
2376
            h->non_zero_count_cache[scan8[2+12]]= h->non_zero_count_cache[scan8[3+12]]= h->cbp & 8;
2377
        }
2378
    }
2379

    
2380
    if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
2381
        int list;
2382
        for(list=0; list<h->list_count; list++){
2383
            if(USES_LIST(top_type, list)){
2384
                const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
2385
                const int b8_xy= 4*top_xy + 2;
2386
                int (*ref2frm)[64] = h->ref2frm[ h->slice_table[top_xy]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2387
                AV_COPY128(h->mv_cache[list][scan8[0] + 0 - 1*8], s->current_picture.motion_val[list][b_xy + 0]);
2388
                h->ref_cache[list][scan8[0] + 0 - 1*8]=
2389
                h->ref_cache[list][scan8[0] + 1 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 0]];
2390
                h->ref_cache[list][scan8[0] + 2 - 1*8]=
2391
                h->ref_cache[list][scan8[0] + 3 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 1]];
2392
            }else{
2393
                AV_ZERO128(h->mv_cache[list][scan8[0] + 0 - 1*8]);
2394
                AV_WN32A(&h->ref_cache[list][scan8[0] + 0 - 1*8], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2395
            }
2396

    
2397
            if(!IS_INTERLACED(mb_type^left_type[0])){
2398
                if(USES_LIST(left_type[0], list)){
2399
                    const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
2400
                    const int b8_xy= 4*left_xy[0] + 1;
2401
                    int (*ref2frm)[64] = h->ref2frm[ h->slice_table[left_xy[0]]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2402
                    AV_COPY32(h->mv_cache[list][scan8[0] - 1 + 0 ], s->current_picture.motion_val[list][b_xy + h->b_stride*0]);
2403
                    AV_COPY32(h->mv_cache[list][scan8[0] - 1 + 8 ], s->current_picture.motion_val[list][b_xy + h->b_stride*1]);
2404
                    AV_COPY32(h->mv_cache[list][scan8[0] - 1 +16 ], s->current_picture.motion_val[list][b_xy + h->b_stride*2]);
2405
                    AV_COPY32(h->mv_cache[list][scan8[0] - 1 +24 ], s->current_picture.motion_val[list][b_xy + h->b_stride*3]);
2406
                    h->ref_cache[list][scan8[0] - 1 + 0 ]=
2407
                    h->ref_cache[list][scan8[0] - 1 + 8 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 2*0]];
2408
                    h->ref_cache[list][scan8[0] - 1 +16 ]=
2409
                    h->ref_cache[list][scan8[0] - 1 +24 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 2*1]];
2410
                }else{
2411
                    AV_ZERO32(h->mv_cache [list][scan8[0] - 1 + 0 ]);
2412
                    AV_ZERO32(h->mv_cache [list][scan8[0] - 1 + 8 ]);
2413
                    AV_ZERO32(h->mv_cache [list][scan8[0] - 1 +16 ]);
2414
                    AV_ZERO32(h->mv_cache [list][scan8[0] - 1 +24 ]);
2415
                    h->ref_cache[list][scan8[0] - 1 + 0  ]=
2416
                    h->ref_cache[list][scan8[0] - 1 + 8  ]=
2417
                    h->ref_cache[list][scan8[0] - 1 + 16 ]=
2418
                    h->ref_cache[list][scan8[0] - 1 + 24 ]= LIST_NOT_USED;
2419
                }
2420
            }
2421
        }
2422
    }
2423

    
2424
    return 0;
2425
}
2426

    
2427
static void loop_filter(H264Context *h){
2428
    MpegEncContext * const s = &h->s;
2429
    uint8_t  *dest_y, *dest_cb, *dest_cr;
2430
    int linesize, uvlinesize, mb_x, mb_y;
2431
    const int end_mb_y= s->mb_y + FRAME_MBAFF;
2432
    const int old_slice_type= h->slice_type;
2433

    
2434
    if(h->deblocking_filter) {
2435
        for(mb_x= 0; mb_x<s->mb_width; mb_x++){
2436
            for(mb_y=end_mb_y - FRAME_MBAFF; mb_y<= end_mb_y; mb_y++){
2437
                int mb_xy, mb_type;
2438
                mb_xy = h->mb_xy = mb_x + mb_y*s->mb_stride;
2439
                h->slice_num= h->slice_table[mb_xy];
2440
                mb_type= s->current_picture.mb_type[mb_xy];
2441
                h->list_count= h->list_counts[mb_xy];
2442

    
2443
                if(FRAME_MBAFF)
2444
                    h->mb_mbaff = h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2445

    
2446
                s->mb_x= mb_x;
2447
                s->mb_y= mb_y;
2448
                dest_y  = s->current_picture.data[0] + (mb_x + mb_y * s->linesize  ) * 16;
2449
                dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
2450
                dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
2451
                    //FIXME simplify above
2452

    
2453
                if (MB_FIELD) {
2454
                    linesize   = h->mb_linesize   = s->linesize * 2;
2455
                    uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2456
                    if(mb_y&1){ //FIXME move out of this function?
2457
                        dest_y -= s->linesize*15;
2458
                        dest_cb-= s->uvlinesize*7;
2459
                        dest_cr-= s->uvlinesize*7;
2460
                    }
2461
                } else {
2462
                    linesize   = h->mb_linesize   = s->linesize;
2463
                    uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2464
                }
2465
                backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0);
2466
                if(fill_filter_caches(h, mb_type))
2467
                    continue;
2468
                h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2469
                h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2470

    
2471
                if (FRAME_MBAFF) {
2472
                    ff_h264_filter_mb     (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2473
                } else {
2474
                    ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2475
                }
2476
            }
2477
        }
2478
    }
2479
    h->slice_type= old_slice_type;
2480
    s->mb_x= 0;
2481
    s->mb_y= end_mb_y - FRAME_MBAFF;
2482
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2483
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2484
}
2485

    
2486
static void predict_field_decoding_flag(H264Context *h){
2487
    MpegEncContext * const s = &h->s;
2488
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2489
    int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
2490
                ? s->current_picture.mb_type[mb_xy-1]
2491
                : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
2492
                ? s->current_picture.mb_type[mb_xy-s->mb_stride]
2493
                : 0;
2494
    h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2495
}
2496

    
2497
static int decode_slice(struct AVCodecContext *avctx, void *arg){
2498
    H264Context *h = *(void**)arg;
2499
    MpegEncContext * const s = &h->s;
2500
    const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
2501

    
2502
    s->mb_skip_run= -1;
2503

    
2504
    h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
2505
                    (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
2506

    
2507
    if( h->pps.cabac ) {
2508
        /* realign */
2509
        align_get_bits( &s->gb );
2510

    
2511
        /* init cabac */
2512
        ff_init_cabac_states( &h->cabac);
2513
        ff_init_cabac_decoder( &h->cabac,
2514
                               s->gb.buffer + get_bits_count(&s->gb)/8,
2515
                               (get_bits_left(&s->gb) + 7)/8);
2516

    
2517
        ff_h264_init_cabac_states(h);
2518

    
2519
        for(;;){
2520
//START_TIMER
2521
            int ret = ff_h264_decode_mb_cabac(h);
2522
            int eos;
2523
//STOP_TIMER("decode_mb_cabac")
2524

    
2525
            if(ret>=0) ff_h264_hl_decode_mb(h);
2526

    
2527
            if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
2528
                s->mb_y++;
2529

    
2530
                ret = ff_h264_decode_mb_cabac(h);
2531

    
2532
                if(ret>=0) ff_h264_hl_decode_mb(h);
2533
                s->mb_y--;
2534
            }
2535
            eos = get_cabac_terminate( &h->cabac );
2536

    
2537
            if((s->workaround_bugs & FF_BUG_TRUNCATED) && h->cabac.bytestream > h->cabac.bytestream_end + 2){
2538
                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);
2539
                return 0;
2540
            }
2541
            if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
2542
                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);
2543
                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);
2544
                return -1;
2545
            }
2546

    
2547
            if( ++s->mb_x >= s->mb_width ) {
2548
                s->mb_x = 0;
2549
                loop_filter(h);
2550
                ff_draw_horiz_band(s, 16*s->mb_y, 16);
2551
                ++s->mb_y;
2552
                if(FIELD_OR_MBAFF_PICTURE) {
2553
                    ++s->mb_y;
2554
                    if(FRAME_MBAFF && s->mb_y < s->mb_height)
2555
                        predict_field_decoding_flag(h);
2556
                }
2557
            }
2558

    
2559
            if( eos || s->mb_y >= s->mb_height ) {
2560
                tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2561
                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);
2562
                return 0;
2563
            }
2564
        }
2565

    
2566
    } else {
2567
        for(;;){
2568
            int ret = ff_h264_decode_mb_cavlc(h);
2569

    
2570
            if(ret>=0) ff_h264_hl_decode_mb(h);
2571

    
2572
            if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
2573
                s->mb_y++;
2574
                ret = ff_h264_decode_mb_cavlc(h);
2575

    
2576
                if(ret>=0) ff_h264_hl_decode_mb(h);
2577
                s->mb_y--;
2578
            }
2579

    
2580
            if(ret<0){
2581
                av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2582
                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);
2583

    
2584
                return -1;
2585
            }
2586

    
2587
            if(++s->mb_x >= s->mb_width){
2588
                s->mb_x=0;
2589
                loop_filter(h);
2590
                ff_draw_horiz_band(s, 16*s->mb_y, 16);
2591
                ++s->mb_y;
2592
                if(FIELD_OR_MBAFF_PICTURE) {
2593
                    ++s->mb_y;
2594
                    if(FRAME_MBAFF && s->mb_y < s->mb_height)
2595
                        predict_field_decoding_flag(h);
2596
                }
2597
                if(s->mb_y >= s->mb_height){
2598
                    tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2599

    
2600
                    if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
2601
                        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);
2602

    
2603
                        return 0;
2604
                    }else{
2605
                        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);
2606

    
2607
                        return -1;
2608
                    }
2609
                }
2610
            }
2611

    
2612
            if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
2613
                tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2614
                if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
2615
                    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);
2616

    
2617
                    return 0;
2618
                }else{
2619
                    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);
2620

    
2621
                    return -1;
2622
                }
2623
            }
2624
        }
2625
    }
2626

    
2627
#if 0
2628
    for(;s->mb_y < s->mb_height; s->mb_y++){
2629
        for(;s->mb_x < s->mb_width; s->mb_x++){
2630
            int ret= decode_mb(h);
2631

2632
            ff_h264_hl_decode_mb(h);
2633

2634
            if(ret<0){
2635
                av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2636
                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);
2637

2638
                return -1;
2639
            }
2640

2641
            if(++s->mb_x >= s->mb_width){
2642
                s->mb_x=0;
2643
                if(++s->mb_y >= s->mb_height){
2644
                    if(get_bits_count(s->gb) == s->gb.size_in_bits){
2645
                        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);
2646

2647
                        return 0;
2648
                    }else{
2649
                        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);
2650

2651
                        return -1;
2652
                    }
2653
                }
2654
            }
2655

2656
            if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
2657
                if(get_bits_count(s->gb) == s->gb.size_in_bits){
2658
                    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);
2659

2660
                    return 0;
2661
                }else{
2662
                    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);
2663

2664
                    return -1;
2665
                }
2666
            }
2667
        }
2668
        s->mb_x=0;
2669
        ff_draw_horiz_band(s, 16*s->mb_y, 16);
2670
    }
2671
#endif
2672
    return -1; //not reached
2673
}
2674

    
2675
/**
2676
 * Call decode_slice() for each context.
2677
 *
2678
 * @param h h264 master context
2679
 * @param context_count number of contexts to execute
2680
 */
2681
static void execute_decode_slices(H264Context *h, int context_count){
2682
    MpegEncContext * const s = &h->s;
2683
    AVCodecContext * const avctx= s->avctx;
2684
    H264Context *hx;
2685
    int i;
2686

    
2687
    if (s->avctx->hwaccel)
2688
        return;
2689
    if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2690
        return;
2691
    if(context_count == 1) {
2692
        decode_slice(avctx, &h);
2693
    } else {
2694
        for(i = 1; i < context_count; i++) {
2695
            hx = h->thread_context[i];
2696
            hx->s.error_recognition = avctx->error_recognition;
2697
            hx->s.error_count = 0;
2698
        }
2699

    
2700
        avctx->execute(avctx, (void *)decode_slice,
2701
                       h->thread_context, NULL, context_count, sizeof(void*));
2702

    
2703
        /* pull back stuff from slices to master context */
2704
        hx = h->thread_context[context_count - 1];
2705
        s->mb_x = hx->s.mb_x;
2706
        s->mb_y = hx->s.mb_y;
2707
        s->dropable = hx->s.dropable;
2708
        s->picture_structure = hx->s.picture_structure;
2709
        for(i = 1; i < context_count; i++)
2710
            h->s.error_count += h->thread_context[i]->s.error_count;
2711
    }
2712
}
2713

    
2714

    
2715
static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
2716
    MpegEncContext * const s = &h->s;
2717
    AVCodecContext * const avctx= s->avctx;
2718
    int buf_index=0;
2719
    H264Context *hx; ///< thread context
2720
    int context_count = 0;
2721
    int next_avc= h->is_avc ? 0 : buf_size;
2722

    
2723
    h->max_contexts = avctx->thread_count;
2724
#if 0
2725
    int i;
2726
    for(i=0; i<50; i++){
2727
        av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]);
2728
    }
2729
#endif
2730
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
2731
        h->current_slice = 0;
2732
        if (!s->first_field)
2733
            s->current_picture_ptr= NULL;
2734
        ff_h264_reset_sei(h);
2735
    }
2736

    
2737
    for(;;){
2738
        int consumed;
2739
        int dst_length;
2740
        int bit_length;
2741
        const uint8_t *ptr;
2742
        int i, nalsize = 0;
2743
        int err;
2744

    
2745
        if(buf_index >= next_avc) {
2746
            if(buf_index >= buf_size) break;
2747
            nalsize = 0;
2748
            for(i = 0; i < h->nal_length_size; i++)
2749
                nalsize = (nalsize << 8) | buf[buf_index++];
2750
            if(nalsize <= 0 || nalsize > buf_size - buf_index){
2751
                av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
2752
                break;
2753
            }
2754
            next_avc= buf_index + nalsize;
2755
        } else {
2756
            // start code prefix search
2757
            for(; buf_index + 3 < next_avc; buf_index++){
2758
                // This should always succeed in the first iteration.
2759
                if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
2760
                    break;
2761
            }
2762

    
2763
            if(buf_index+3 >= buf_size) break;
2764

    
2765
            buf_index+=3;
2766
            if(buf_index >= next_avc) continue;
2767
        }
2768

    
2769
        hx = h->thread_context[context_count];
2770

    
2771
        ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, next_avc - buf_index);
2772
        if (ptr==NULL || dst_length < 0){
2773
            return -1;
2774
        }
2775
        i= buf_index + consumed;
2776
        if((s->workaround_bugs & FF_BUG_AUTODETECT) && i+3<next_avc &&
2777
           buf[i]==0x00 && buf[i+1]==0x00 && buf[i+2]==0x01 && buf[i+3]==0xE0)
2778
            s->workaround_bugs |= FF_BUG_TRUNCATED;
2779

    
2780
        if(!(s->workaround_bugs & FF_BUG_TRUNCATED)){
2781
        while(ptr[dst_length - 1] == 0 && dst_length > 0)
2782
            dst_length--;
2783
        }
2784
        bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
2785

    
2786
        if(s->avctx->debug&FF_DEBUG_STARTCODE){
2787
            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);
2788
        }
2789

    
2790
        if (h->is_avc && (nalsize != consumed) && nalsize){
2791
            av_log(h->s.avctx, AV_LOG_DEBUG, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize);
2792
        }
2793

    
2794
        buf_index += consumed;
2795

    
2796
        if(  (s->hurry_up == 1 && h->nal_ref_idc  == 0) //FIXME do not discard SEI id
2797
           ||(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc  == 0))
2798
            continue;
2799

    
2800
      again:
2801
        err = 0;
2802
        switch(hx->nal_unit_type){
2803
        case NAL_IDR_SLICE:
2804
            if (h->nal_unit_type != NAL_IDR_SLICE) {
2805
                av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
2806
                return -1;
2807
            }
2808
            idr(h); //FIXME ensure we don't loose some frames if there is reordering
2809
        case NAL_SLICE:
2810
            init_get_bits(&hx->s.gb, ptr, bit_length);
2811
            hx->intra_gb_ptr=
2812
            hx->inter_gb_ptr= &hx->s.gb;
2813
            hx->s.data_partitioning = 0;
2814

    
2815
            if((err = decode_slice_header(hx, h)))
2816
               break;
2817

    
2818
            if (h->current_slice == 1) {
2819
                if (s->avctx->hwaccel && s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
2820
                    return -1;
2821
                if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2822
                    ff_vdpau_h264_picture_start(s);
2823
            }
2824

    
2825
            s->current_picture_ptr->key_frame |=
2826
                    (hx->nal_unit_type == NAL_IDR_SLICE) ||
2827
                    (h->sei_recovery_frame_cnt >= 0);
2828
            if(hx->redundant_pic_count==0 && hx->s.hurry_up < 5
2829
               && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2830
               && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
2831
               && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2832
               && avctx->skip_frame < AVDISCARD_ALL){
2833
                if(avctx->hwaccel) {
2834
                    if (avctx->hwaccel->decode_slice(avctx, &buf[buf_index - consumed], consumed) < 0)
2835
                        return -1;
2836
                }else
2837
                if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
2838
                    static const uint8_t start_code[] = {0x00, 0x00, 0x01};
2839
                    ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code));
2840
                    ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed );
2841
                }else
2842
                    context_count++;
2843
            }
2844
            break;
2845
        case NAL_DPA:
2846
            init_get_bits(&hx->s.gb, ptr, bit_length);
2847
            hx->intra_gb_ptr=
2848
            hx->inter_gb_ptr= NULL;
2849

    
2850
            if ((err = decode_slice_header(hx, h)) < 0)
2851
                break;
2852

    
2853
            hx->s.data_partitioning = 1;
2854

    
2855
            break;
2856
        case NAL_DPB:
2857
            init_get_bits(&hx->intra_gb, ptr, bit_length);
2858
            hx->intra_gb_ptr= &hx->intra_gb;
2859
            break;
2860
        case NAL_DPC:
2861
            init_get_bits(&hx->inter_gb, ptr, bit_length);
2862
            hx->inter_gb_ptr= &hx->inter_gb;
2863

    
2864
            if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
2865
               && s->context_initialized
2866
               && s->hurry_up < 5
2867
               && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2868
               && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
2869
               && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2870
               && avctx->skip_frame < AVDISCARD_ALL)
2871
                context_count++;
2872
            break;
2873
        case NAL_SEI:
2874
            init_get_bits(&s->gb, ptr, bit_length);
2875
            ff_h264_decode_sei(h);
2876
            break;
2877
        case NAL_SPS:
2878
            init_get_bits(&s->gb, ptr, bit_length);
2879
            ff_h264_decode_seq_parameter_set(h);
2880

    
2881
            if(s->flags& CODEC_FLAG_LOW_DELAY)
2882
                s->low_delay=1;
2883

    
2884
            if(avctx->has_b_frames < 2)
2885
                avctx->has_b_frames= !s->low_delay;
2886
            break;
2887
        case NAL_PPS:
2888
            init_get_bits(&s->gb, ptr, bit_length);
2889

    
2890
            ff_h264_decode_picture_parameter_set(h, bit_length);
2891

    
2892
            break;
2893
        case NAL_AUD:
2894
        case NAL_END_SEQUENCE:
2895
        case NAL_END_STREAM:
2896
        case NAL_FILLER_DATA:
2897
        case NAL_SPS_EXT:
2898
        case NAL_AUXILIARY_SLICE:
2899
            break;
2900
        default:
2901
            av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", hx->nal_unit_type, bit_length);
2902
        }
2903

    
2904
        if(context_count == h->max_contexts) {
2905
            execute_decode_slices(h, context_count);
2906
            context_count = 0;
2907
        }
2908

    
2909
        if (err < 0)
2910
            av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
2911
        else if(err == 1) {
2912
            /* Slice could not be decoded in parallel mode, copy down
2913
             * NAL unit stuff to context 0 and restart. Note that
2914
             * rbsp_buffer is not transferred, but since we no longer
2915
             * run in parallel mode this should not be an issue. */
2916
            h->nal_unit_type = hx->nal_unit_type;
2917
            h->nal_ref_idc   = hx->nal_ref_idc;
2918
            hx = h;
2919
            goto again;
2920
        }
2921
    }
2922
    if(context_count)
2923
        execute_decode_slices(h, context_count);
2924
    return buf_index;
2925
}
2926

    
2927
/**
2928
 * returns the number of bytes consumed for building the current frame
2929
 */
2930
static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
2931
        if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
2932
        if(pos+10>buf_size) pos=buf_size; // oops ;)
2933

    
2934
        return pos;
2935
}
2936

    
2937
static int decode_frame(AVCodecContext *avctx,
2938
                             void *data, int *data_size,
2939
                             AVPacket *avpkt)
2940
{
2941
    const uint8_t *buf = avpkt->data;
2942
    int buf_size = avpkt->size;
2943
    H264Context *h = avctx->priv_data;
2944
    MpegEncContext *s = &h->s;
2945
    AVFrame *pict = data;
2946
    int buf_index;
2947

    
2948
    s->flags= avctx->flags;
2949
    s->flags2= avctx->flags2;
2950

    
2951
   /* end of stream, output what is still in the buffers */
2952
 out:
2953
    if (buf_size == 0) {
2954
        Picture *out;
2955
        int i, out_idx;
2956

    
2957
//FIXME factorize this with the output code below
2958
        out = h->delayed_pic[0];
2959
        out_idx = 0;
2960
        for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2961
            if(h->delayed_pic[i]->poc < out->poc){
2962
                out = h->delayed_pic[i];
2963
                out_idx = i;
2964
            }
2965

    
2966
        for(i=out_idx; h->delayed_pic[i]; i++)
2967
            h->delayed_pic[i] = h->delayed_pic[i+1];
2968

    
2969
        if(out){
2970
            *data_size = sizeof(AVFrame);
2971
            *pict= *(AVFrame*)out;
2972
        }
2973

    
2974
        return 0;
2975
    }
2976

    
2977
    buf_index=decode_nal_units(h, buf, buf_size);
2978
    if(buf_index < 0)
2979
        return -1;
2980

    
2981
    if (!s->current_picture_ptr && h->nal_unit_type == NAL_END_SEQUENCE) {
2982
        buf_size = 0;
2983
        goto out;
2984
    }
2985

    
2986
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
2987
        if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0;
2988
        av_log(avctx, AV_LOG_ERROR, "no frame!\n");
2989
        return -1;
2990
    }
2991

    
2992
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){
2993
        Picture *out = s->current_picture_ptr;
2994
        Picture *cur = s->current_picture_ptr;
2995
        int i, pics, out_of_order, out_idx;
2996

    
2997
        field_end(h);
2998

    
2999
        if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) {
3000
            /* Wait for second field. */
3001
            *data_size = 0;
3002

    
3003
        } else {
3004
            cur->interlaced_frame = 0;
3005
            cur->repeat_pict = 0;
3006

    
3007
            /* Signal interlacing information externally. */
3008
            /* Prioritize picture timing SEI information over used decoding process if it exists. */
3009

    
3010
            if(h->sps.pic_struct_present_flag){
3011
                switch (h->sei_pic_struct)
3012
                {
3013
                case SEI_PIC_STRUCT_FRAME:
3014
                    break;
3015
                case SEI_PIC_STRUCT_TOP_FIELD:
3016
                case SEI_PIC_STRUCT_BOTTOM_FIELD:
3017
                    cur->interlaced_frame = 1;
3018
                    break;
3019
                case SEI_PIC_STRUCT_TOP_BOTTOM:
3020
                case SEI_PIC_STRUCT_BOTTOM_TOP:
3021
                    if (FIELD_OR_MBAFF_PICTURE)
3022
                        cur->interlaced_frame = 1;
3023
                    else
3024
                        // try to flag soft telecine progressive
3025
                        cur->interlaced_frame = h->prev_interlaced_frame;
3026
                    break;
3027
                case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
3028
                case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
3029
                    // Signal the possibility of telecined film externally (pic_struct 5,6)
3030
                    // From these hints, let the applications decide if they apply deinterlacing.
3031
                    cur->repeat_pict = 1;
3032
                    break;
3033
                case SEI_PIC_STRUCT_FRAME_DOUBLING:
3034
                    // Force progressive here, as doubling interlaced frame is a bad idea.
3035
                    cur->repeat_pict = 2;
3036
                    break;
3037
                case SEI_PIC_STRUCT_FRAME_TRIPLING:
3038
                    cur->repeat_pict = 4;
3039
                    break;
3040
                }
3041

    
3042
                if ((h->sei_ct_type & 3) && h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
3043
                    cur->interlaced_frame = (h->sei_ct_type & (1<<1)) != 0;
3044
            }else{
3045
                /* Derive interlacing flag from used decoding process. */
3046
                cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE;
3047
            }
3048
            h->prev_interlaced_frame = cur->interlaced_frame;
3049

    
3050
            if (cur->field_poc[0] != cur->field_poc[1]){
3051
                /* Derive top_field_first from field pocs. */
3052
                cur->top_field_first = cur->field_poc[0] < cur->field_poc[1];
3053
            }else{
3054
                if(cur->interlaced_frame || h->sps.pic_struct_present_flag){
3055
                    /* Use picture timing SEI information. Even if it is a information of a past frame, better than nothing. */
3056
                    if(h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM
3057
                      || h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
3058
                        cur->top_field_first = 1;
3059
                    else
3060
                        cur->top_field_first = 0;
3061
                }else{
3062
                    /* Most likely progressive */
3063
                    cur->top_field_first = 0;
3064
                }
3065
            }
3066

    
3067
        //FIXME do something with unavailable reference frames
3068

    
3069
            /* Sort B-frames into display order */
3070

    
3071
            if(h->sps.bitstream_restriction_flag
3072
               && s->avctx->has_b_frames < h->sps.num_reorder_frames){
3073
                s->avctx->has_b_frames = h->sps.num_reorder_frames;
3074
                s->low_delay = 0;
3075
            }
3076

    
3077
            if(   s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT
3078
               && !h->sps.bitstream_restriction_flag){
3079
                s->avctx->has_b_frames= MAX_DELAYED_PIC_COUNT;
3080
                s->low_delay= 0;
3081
            }
3082

    
3083
            pics = 0;
3084
            while(h->delayed_pic[pics]) pics++;
3085

    
3086
            assert(pics <= MAX_DELAYED_PIC_COUNT);
3087

    
3088
            h->delayed_pic[pics++] = cur;
3089
            if(cur->reference == 0)
3090
                cur->reference = DELAYED_PIC_REF;
3091

    
3092
            out = h->delayed_pic[0];
3093
            out_idx = 0;
3094
            for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
3095
                if(h->delayed_pic[i]->poc < out->poc){
3096
                    out = h->delayed_pic[i];
3097
                    out_idx = i;
3098
                }
3099
            if(s->avctx->has_b_frames == 0 && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset))
3100
                h->outputed_poc= INT_MIN;
3101
            out_of_order = out->poc < h->outputed_poc;
3102

    
3103
            if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames)
3104
                { }
3105
            else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT)
3106
               || (s->low_delay &&
3107
                ((h->outputed_poc != INT_MIN && out->poc > h->outputed_poc + 2)
3108
                 || cur->pict_type == FF_B_TYPE)))
3109
            {
3110
                s->low_delay = 0;
3111
                s->avctx->has_b_frames++;
3112
            }
3113

    
3114
            if(out_of_order || pics > s->avctx->has_b_frames){
3115
                out->reference &= ~DELAYED_PIC_REF;
3116
                for(i=out_idx; h->delayed_pic[i]; i++)
3117
                    h->delayed_pic[i] = h->delayed_pic[i+1];
3118
            }
3119
            if(!out_of_order && pics > s->avctx->has_b_frames){
3120
                *data_size = sizeof(AVFrame);
3121

    
3122
                if(out_idx==0 && h->delayed_pic[0] && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) {
3123
                    h->outputed_poc = INT_MIN;
3124
                } else
3125
                    h->outputed_poc = out->poc;
3126
                *pict= *(AVFrame*)out;
3127
            }else{
3128
                av_log(avctx, AV_LOG_DEBUG, "no picture\n");
3129
            }
3130
        }
3131
    }
3132

    
3133
    assert(pict->data[0] || !*data_size);
3134
    ff_print_debug_info(s, pict);
3135
//printf("out %d\n", (int)pict->data[0]);
3136

    
3137
    return get_consumed_bytes(s, buf_index, buf_size);
3138
}
3139
#if 0
3140
static inline void fill_mb_avail(H264Context *h){
3141
    MpegEncContext * const s = &h->s;
3142
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
3143

3144
    if(s->mb_y){
3145
        h->mb_avail[0]= s->mb_x                 && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num;
3146
        h->mb_avail[1]=                            h->slice_table[mb_xy - s->mb_stride    ] == h->slice_num;
3147
        h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num;
3148
    }else{
3149
        h->mb_avail[0]=
3150
        h->mb_avail[1]=
3151
        h->mb_avail[2]= 0;
3152
    }
3153
    h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num;
3154
    h->mb_avail[4]= 1; //FIXME move out
3155
    h->mb_avail[5]= 0; //FIXME move out
3156
}
3157
#endif
3158

    
3159
#ifdef TEST
3160
#undef printf
3161
#undef random
3162
#define COUNT 8000
3163
#define SIZE (COUNT*40)
3164
int main(void){
3165
    int i;
3166
    uint8_t temp[SIZE];
3167
    PutBitContext pb;
3168
    GetBitContext gb;
3169
//    int int_temp[10000];
3170
    DSPContext dsp;
3171
    AVCodecContext avctx;
3172

    
3173
    dsputil_init(&dsp, &avctx);
3174

    
3175
    init_put_bits(&pb, temp, SIZE);
3176
    printf("testing unsigned exp golomb\n");
3177
    for(i=0; i<COUNT; i++){
3178
        START_TIMER
3179
        set_ue_golomb(&pb, i);
3180
        STOP_TIMER("set_ue_golomb");
3181
    }
3182
    flush_put_bits(&pb);
3183

    
3184
    init_get_bits(&gb, temp, 8*SIZE);
3185
    for(i=0; i<COUNT; i++){
3186
        int j, s;
3187

    
3188
        s= show_bits(&gb, 24);
3189

    
3190
        START_TIMER
3191
        j= get_ue_golomb(&gb);
3192
        if(j != i){
3193
            printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
3194
//            return -1;
3195
        }
3196
        STOP_TIMER("get_ue_golomb");
3197
    }
3198

    
3199

    
3200
    init_put_bits(&pb, temp, SIZE);
3201
    printf("testing signed exp golomb\n");
3202
    for(i=0; i<COUNT; i++){
3203
        START_TIMER
3204
        set_se_golomb(&pb, i - COUNT/2);
3205
        STOP_TIMER("set_se_golomb");
3206
    }
3207
    flush_put_bits(&pb);
3208

    
3209
    init_get_bits(&gb, temp, 8*SIZE);
3210
    for(i=0; i<COUNT; i++){
3211
        int j, s;
3212

    
3213
        s= show_bits(&gb, 24);
3214

    
3215
        START_TIMER
3216
        j= get_se_golomb(&gb);
3217
        if(j != i - COUNT/2){
3218
            printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
3219
//            return -1;
3220
        }
3221
        STOP_TIMER("get_se_golomb");
3222
    }
3223

    
3224
#if 0
3225
    printf("testing 4x4 (I)DCT\n");
3226

3227
    DCTELEM block[16];
3228
    uint8_t src[16], ref[16];
3229
    uint64_t error= 0, max_error=0;
3230

3231
    for(i=0; i<COUNT; i++){
3232
        int j;
3233
//        printf("%d %d %d\n", r1, r2, (r2-r1)*16);
3234
        for(j=0; j<16; j++){
3235
            ref[j]= random()%255;
3236
            src[j]= random()%255;
3237
        }
3238

3239
        h264_diff_dct_c(block, src, ref, 4);
3240

3241
        //normalize
3242
        for(j=0; j<16; j++){
3243
//            printf("%d ", block[j]);
3244
            block[j]= block[j]*4;
3245
            if(j&1) block[j]= (block[j]*4 + 2)/5;
3246
            if(j&4) block[j]= (block[j]*4 + 2)/5;
3247
        }
3248
//        printf("\n");
3249

3250
        h->h264dsp.h264_idct_add(ref, block, 4);
3251
/*        for(j=0; j<16; j++){
3252
            printf("%d ", ref[j]);
3253
        }
3254
        printf("\n");*/
3255

3256
        for(j=0; j<16; j++){
3257
            int diff= FFABS(src[j] - ref[j]);
3258

3259
            error+= diff*diff;
3260
            max_error= FFMAX(max_error, diff);
3261
        }
3262
    }
3263
    printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
3264
    printf("testing quantizer\n");
3265
    for(qp=0; qp<52; qp++){
3266
        for(i=0; i<16; i++)
3267
            src1_block[i]= src2_block[i]= random()%255;
3268

3269
    }
3270
    printf("Testing NAL layer\n");
3271

3272
    uint8_t bitstream[COUNT];
3273
    uint8_t nal[COUNT*2];
3274
    H264Context h;
3275
    memset(&h, 0, sizeof(H264Context));
3276

3277
    for(i=0; i<COUNT; i++){
3278
        int zeros= i;
3279
        int nal_length;
3280
        int consumed;
3281
        int out_length;
3282
        uint8_t *out;
3283
        int j;
3284

3285
        for(j=0; j<COUNT; j++){
3286
            bitstream[j]= (random() % 255) + 1;
3287
        }
3288

3289
        for(j=0; j<zeros; j++){
3290
            int pos= random() % COUNT;
3291
            while(bitstream[pos] == 0){
3292
                pos++;
3293
                pos %= COUNT;
3294
            }
3295
            bitstream[pos]=0;
3296
        }
3297

3298
        START_TIMER
3299

3300
        nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
3301
        if(nal_length<0){
3302
            printf("encoding failed\n");
3303
            return -1;
3304
        }
3305

3306
        out= ff_h264_decode_nal(&h, nal, &out_length, &consumed, nal_length);
3307

3308
        STOP_TIMER("NAL")
3309

3310
        if(out_length != COUNT){
3311
            printf("incorrect length %d %d\n", out_length, COUNT);
3312
            return -1;
3313
        }
3314

3315
        if(consumed != nal_length){
3316
            printf("incorrect consumed length %d %d\n", nal_length, consumed);
3317
            return -1;
3318
        }
3319

3320
        if(memcmp(bitstream, out, COUNT)){
3321
            printf("mismatch\n");
3322
            return -1;
3323
        }
3324
    }
3325
#endif
3326

    
3327
    printf("Testing RBSP\n");
3328

    
3329

    
3330
    return 0;
3331
}
3332
#endif /* TEST */
3333

    
3334

    
3335
av_cold void ff_h264_free_context(H264Context *h)
3336
{
3337
    int i;
3338

    
3339
    free_tables(h, 1); //FIXME cleanup init stuff perhaps
3340

    
3341
    for(i = 0; i < MAX_SPS_COUNT; i++)
3342
        av_freep(h->sps_buffers + i);
3343

    
3344
    for(i = 0; i < MAX_PPS_COUNT; i++)
3345
        av_freep(h->pps_buffers + i);
3346
}
3347

    
3348
av_cold int ff_h264_decode_end(AVCodecContext *avctx)
3349
{
3350
    H264Context *h = avctx->priv_data;
3351
    MpegEncContext *s = &h->s;
3352

    
3353
    ff_h264_free_context(h);
3354

    
3355
    MPV_common_end(s);
3356

    
3357
//    memset(h, 0, sizeof(H264Context));
3358

    
3359
    return 0;
3360
}
3361

    
3362

    
3363
AVCodec ff_h264_decoder = {
3364
    "h264",
3365
    AVMEDIA_TYPE_VIDEO,
3366
    CODEC_ID_H264,
3367
    sizeof(H264Context),
3368
    ff_h264_decode_init,
3369
    NULL,
3370
    ff_h264_decode_end,
3371
    decode_frame,
3372
    /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_DELAY,
3373
    .flush= flush_dpb,
3374
    .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
3375
};
3376

    
3377
#if CONFIG_H264_VDPAU_DECODER
3378
AVCodec ff_h264_vdpau_decoder = {
3379
    "h264_vdpau",
3380
    AVMEDIA_TYPE_VIDEO,
3381
    CODEC_ID_H264,
3382
    sizeof(H264Context),
3383
    ff_h264_decode_init,
3384
    NULL,
3385
    ff_h264_decode_end,
3386
    decode_frame,
3387
    CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
3388
    .flush= flush_dpb,
3389
    .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
3390
    .pix_fmts = (const enum PixelFormat[]){PIX_FMT_VDPAU_H264, PIX_FMT_NONE},
3391
};
3392
#endif