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

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

    
28
#include "internal.h"
29
#include "dsputil.h"
30
#include "avcodec.h"
31
#include "mpegvideo.h"
32
#include "h264.h"
33
#include "h264data.h"
34
#include "h264_mvpred.h"
35
#include "h264_parser.h"
36
#include "golomb.h"
37
#include "mathops.h"
38
#include "rectangle.h"
39
#include "vdpau_internal.h"
40

    
41
#include "cabac.h"
42

    
43
//#undef NDEBUG
44
#include <assert.h>
45

    
46
static const uint8_t rem6[52]={
47
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,
48
};
49

    
50
static const uint8_t div6[52]={
51
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,
52
};
53

    
54
void ff_h264_write_back_intra_pred_mode(H264Context *h){
55
    const int mb_xy= h->mb_xy;
56

    
57
    h->intra4x4_pred_mode[mb_xy][0]= h->intra4x4_pred_mode_cache[7+8*1];
58
    h->intra4x4_pred_mode[mb_xy][1]= h->intra4x4_pred_mode_cache[7+8*2];
59
    h->intra4x4_pred_mode[mb_xy][2]= h->intra4x4_pred_mode_cache[7+8*3];
60
    h->intra4x4_pred_mode[mb_xy][3]= h->intra4x4_pred_mode_cache[7+8*4];
61
    h->intra4x4_pred_mode[mb_xy][4]= h->intra4x4_pred_mode_cache[4+8*4];
62
    h->intra4x4_pred_mode[mb_xy][5]= h->intra4x4_pred_mode_cache[5+8*4];
63
    h->intra4x4_pred_mode[mb_xy][6]= h->intra4x4_pred_mode_cache[6+8*4];
64
}
65

    
66
/**
67
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
68
 */
69
int ff_h264_check_intra4x4_pred_mode(H264Context *h){
70
    MpegEncContext * const s = &h->s;
71
    static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
72
    static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
73
    int i;
74

    
75
    if(!(h->top_samples_available&0x8000)){
76
        for(i=0; i<4; i++){
77
            int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
78
            if(status<0){
79
                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);
80
                return -1;
81
            } else if(status){
82
                h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
83
            }
84
        }
85
    }
86

    
87
    if((h->left_samples_available&0x8888)!=0x8888){
88
        static const int mask[4]={0x8000,0x2000,0x80,0x20};
89
        for(i=0; i<4; i++){
90
            if(!(h->left_samples_available&mask[i])){
91
                int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
92
                if(status<0){
93
                    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);
94
                    return -1;
95
                } else if(status){
96
                    h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
97
                }
98
            }
99
        }
100
    }
101

    
102
    return 0;
103
} //FIXME cleanup like ff_h264_check_intra_pred_mode
104

    
105
/**
106
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
107
 */
108
int ff_h264_check_intra_pred_mode(H264Context *h, int mode){
109
    MpegEncContext * const s = &h->s;
110
    static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
111
    static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
112

    
113
    if(mode > 6U) {
114
        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);
115
        return -1;
116
    }
117

    
118
    if(!(h->top_samples_available&0x8000)){
119
        mode= top[ mode ];
120
        if(mode<0){
121
            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);
122
            return -1;
123
        }
124
    }
125

    
126
    if((h->left_samples_available&0x8080) != 0x8080){
127
        mode= left[ mode ];
128
        if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
129
            mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
130
        }
131
        if(mode<0){
132
            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);
133
            return -1;
134
        }
135
    }
136

    
137
    return mode;
138
}
139

    
140
const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
141
    int i, si, di;
142
    uint8_t *dst;
143
    int bufidx;
144

    
145
//    src[0]&0x80;                //forbidden bit
146
    h->nal_ref_idc= src[0]>>5;
147
    h->nal_unit_type= src[0]&0x1F;
148

    
149
    src++; length--;
150
#if 0
151
    for(i=0; i<length; i++)
152
        printf("%2X ", src[i]);
153
#endif
154

    
155
#if HAVE_FAST_UNALIGNED
156
# if HAVE_FAST_64BIT
157
#   define RS 7
158
    for(i=0; i+1<length; i+=9){
159
        if(!((~AV_RN64A(src+i) & (AV_RN64A(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
160
# else
161
#   define RS 3
162
    for(i=0; i+1<length; i+=5){
163
        if(!((~AV_RN32A(src+i) & (AV_RN32A(src+i) - 0x01000101U)) & 0x80008080U))
164
# endif
165
            continue;
166
        if(i>0 && !src[i]) i--;
167
        while(src[i]) i++;
168
#else
169
#   define RS 0
170
    for(i=0; i+1<length; i+=2){
171
        if(src[i]) continue;
172
        if(i>0 && src[i-1]==0) i--;
173
#endif
174
        if(i+2<length && src[i+1]==0 && src[i+2]<=3){
175
            if(src[i+2]!=3){
176
                /* startcode, so we must be past the end */
177
                length=i;
178
            }
179
            break;
180
        }
181
        i-= RS;
182
    }
183

    
184
    if(i>=length-1){ //no escaped 0
185
        *dst_length= length;
186
        *consumed= length+1; //+1 for the header
187
        return src;
188
    }
189

    
190
    bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
191
    av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
192
    dst= h->rbsp_buffer[bufidx];
193

    
194
    if (dst == NULL){
195
        return NULL;
196
    }
197

    
198
//printf("decoding esc\n");
199
    memcpy(dst, src, i);
200
    si=di=i;
201
    while(si+2<length){
202
        //remove escapes (very rare 1:2^22)
203
        if(src[si+2]>3){
204
            dst[di++]= src[si++];
205
            dst[di++]= src[si++];
206
        }else if(src[si]==0 && src[si+1]==0){
207
            if(src[si+2]==3){ //escape
208
                dst[di++]= 0;
209
                dst[di++]= 0;
210
                si+=3;
211
                continue;
212
            }else //next start code
213
                goto nsc;
214
        }
215

    
216
        dst[di++]= src[si++];
217
    }
218
    while(si<length)
219
        dst[di++]= src[si++];
220
nsc:
221

    
222
    memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
223

    
224
    *dst_length= di;
225
    *consumed= si + 1;//+1 for the header
226
//FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
227
    return dst;
228
}
229

    
230
int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
231
    int v= *src;
232
    int r;
233

    
234
    tprintf(h->s.avctx, "rbsp trailing %X\n", v);
235

    
236
    for(r=1; r<9; r++){
237
        if(v&1) return r;
238
        v>>=1;
239
    }
240
    return 0;
241
}
242

    
243
/**
244
 * IDCT transforms the 16 dc values and dequantizes them.
245
 * @param qp quantization parameter
246
 */
247
static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
248
#define stride 16
249
    int i;
250
    int temp[16]; //FIXME check if this is a good idea
251
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
252
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
253

    
254
//memset(block, 64, 2*256);
255
//return;
256
    for(i=0; i<4; i++){
257
        const int offset= y_offset[i];
258
        const int z0= block[offset+stride*0] + block[offset+stride*4];
259
        const int z1= block[offset+stride*0] - block[offset+stride*4];
260
        const int z2= block[offset+stride*1] - block[offset+stride*5];
261
        const int z3= block[offset+stride*1] + block[offset+stride*5];
262

    
263
        temp[4*i+0]= z0+z3;
264
        temp[4*i+1]= z1+z2;
265
        temp[4*i+2]= z1-z2;
266
        temp[4*i+3]= z0-z3;
267
    }
268

    
269
    for(i=0; i<4; i++){
270
        const int offset= x_offset[i];
271
        const int z0= temp[4*0+i] + temp[4*2+i];
272
        const int z1= temp[4*0+i] - temp[4*2+i];
273
        const int z2= temp[4*1+i] - temp[4*3+i];
274
        const int z3= temp[4*1+i] + temp[4*3+i];
275

    
276
        block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual
277
        block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
278
        block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
279
        block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
280
    }
281
}
282

    
283
#if 0
284
/**
285
 * DCT transforms the 16 dc values.
286
 * @param qp quantization parameter ??? FIXME
287
 */
288
static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
289
//    const int qmul= dequant_coeff[qp][0];
290
    int i;
291
    int temp[16]; //FIXME check if this is a good idea
292
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
293
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
294

295
    for(i=0; i<4; i++){
296
        const int offset= y_offset[i];
297
        const int z0= block[offset+stride*0] + block[offset+stride*4];
298
        const int z1= block[offset+stride*0] - block[offset+stride*4];
299
        const int z2= block[offset+stride*1] - block[offset+stride*5];
300
        const int z3= block[offset+stride*1] + block[offset+stride*5];
301

302
        temp[4*i+0]= z0+z3;
303
        temp[4*i+1]= z1+z2;
304
        temp[4*i+2]= z1-z2;
305
        temp[4*i+3]= z0-z3;
306
    }
307

308
    for(i=0; i<4; i++){
309
        const int offset= x_offset[i];
310
        const int z0= temp[4*0+i] + temp[4*2+i];
311
        const int z1= temp[4*0+i] - temp[4*2+i];
312
        const int z2= temp[4*1+i] - temp[4*3+i];
313
        const int z3= temp[4*1+i] + temp[4*3+i];
314

315
        block[stride*0 +offset]= (z0 + z3)>>1;
316
        block[stride*2 +offset]= (z1 + z2)>>1;
317
        block[stride*8 +offset]= (z1 - z2)>>1;
318
        block[stride*10+offset]= (z0 - z3)>>1;
319
    }
320
}
321
#endif
322

    
323
#undef xStride
324
#undef stride
325

    
326
static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
327
    const int stride= 16*2;
328
    const int xStride= 16;
329
    int a,b,c,d,e;
330

    
331
    a= block[stride*0 + xStride*0];
332
    b= block[stride*0 + xStride*1];
333
    c= block[stride*1 + xStride*0];
334
    d= block[stride*1 + xStride*1];
335

    
336
    e= a-b;
337
    a= a+b;
338
    b= c-d;
339
    c= c+d;
340

    
341
    block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
342
    block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
343
    block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
344
    block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
345
}
346

    
347
#if 0
348
static void chroma_dc_dct_c(DCTELEM *block){
349
    const int stride= 16*2;
350
    const int xStride= 16;
351
    int a,b,c,d,e;
352

353
    a= block[stride*0 + xStride*0];
354
    b= block[stride*0 + xStride*1];
355
    c= block[stride*1 + xStride*0];
356
    d= block[stride*1 + xStride*1];
357

358
    e= a-b;
359
    a= a+b;
360
    b= c-d;
361
    c= c+d;
362

363
    block[stride*0 + xStride*0]= (a+c);
364
    block[stride*0 + xStride*1]= (e+b);
365
    block[stride*1 + xStride*0]= (a-c);
366
    block[stride*1 + xStride*1]= (e-b);
367
}
368
#endif
369

    
370
static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
371
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
372
                           int src_x_offset, int src_y_offset,
373
                           qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
374
    MpegEncContext * const s = &h->s;
375
    const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
376
    int my=       h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
377
    const int luma_xy= (mx&3) + ((my&3)<<2);
378
    uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
379
    uint8_t * src_cb, * src_cr;
380
    int extra_width= h->emu_edge_width;
381
    int extra_height= h->emu_edge_height;
382
    int emu=0;
383
    const int full_mx= mx>>2;
384
    const int full_my= my>>2;
385
    const int pic_width  = 16*s->mb_width;
386
    const int pic_height = 16*s->mb_height >> MB_FIELD;
387

    
388
    if(mx&7) extra_width -= 3;
389
    if(my&7) extra_height -= 3;
390

    
391
    if(   full_mx < 0-extra_width
392
       || full_my < 0-extra_height
393
       || full_mx + 16/*FIXME*/ > pic_width + extra_width
394
       || full_my + 16/*FIXME*/ > pic_height + extra_height){
395
        ff_emulated_edge_mc(s->edge_emu_buffer, src_y - 2 - 2*h->mb_linesize, h->mb_linesize, 16+5, 16+5/*FIXME*/, full_mx-2, full_my-2, pic_width, pic_height);
396
            src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
397
        emu=1;
398
    }
399

    
400
    qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
401
    if(!square){
402
        qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
403
    }
404

    
405
    if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
406

    
407
    if(MB_FIELD){
408
        // chroma offset when predicting from a field of opposite parity
409
        my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
410
        emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
411
    }
412
    src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
413
    src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
414

    
415
    if(emu){
416
        ff_emulated_edge_mc(s->edge_emu_buffer, src_cb, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
417
            src_cb= s->edge_emu_buffer;
418
    }
419
    chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
420

    
421
    if(emu){
422
        ff_emulated_edge_mc(s->edge_emu_buffer, src_cr, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
423
            src_cr= s->edge_emu_buffer;
424
    }
425
    chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
426
}
427

    
428
static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
429
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
430
                           int x_offset, int y_offset,
431
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
432
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
433
                           int list0, int list1){
434
    MpegEncContext * const s = &h->s;
435
    qpel_mc_func *qpix_op=  qpix_put;
436
    h264_chroma_mc_func chroma_op= chroma_put;
437

    
438
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
439
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
440
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
441
    x_offset += 8*s->mb_x;
442
    y_offset += 8*(s->mb_y >> MB_FIELD);
443

    
444
    if(list0){
445
        Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
446
        mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
447
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
448
                           qpix_op, chroma_op);
449

    
450
        qpix_op=  qpix_avg;
451
        chroma_op= chroma_avg;
452
    }
453

    
454
    if(list1){
455
        Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
456
        mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
457
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
458
                           qpix_op, chroma_op);
459
    }
460
}
461

    
462
static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
463
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
464
                           int x_offset, int y_offset,
465
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
466
                           h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
467
                           h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
468
                           int list0, int list1){
469
    MpegEncContext * const s = &h->s;
470

    
471
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
472
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
473
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
474
    x_offset += 8*s->mb_x;
475
    y_offset += 8*(s->mb_y >> MB_FIELD);
476

    
477
    if(list0 && list1){
478
        /* don't optimize for luma-only case, since B-frames usually
479
         * use implicit weights => chroma too. */
480
        uint8_t *tmp_cb = s->obmc_scratchpad;
481
        uint8_t *tmp_cr = s->obmc_scratchpad + 8;
482
        uint8_t *tmp_y  = s->obmc_scratchpad + 8*h->mb_uvlinesize;
483
        int refn0 = h->ref_cache[0][ scan8[n] ];
484
        int refn1 = h->ref_cache[1][ scan8[n] ];
485

    
486
        mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
487
                    dest_y, dest_cb, dest_cr,
488
                    x_offset, y_offset, qpix_put, chroma_put);
489
        mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
490
                    tmp_y, tmp_cb, tmp_cr,
491
                    x_offset, y_offset, qpix_put, chroma_put);
492

    
493
        if(h->use_weight == 2){
494
            int weight0 = h->implicit_weight[refn0][refn1];
495
            int weight1 = 64 - weight0;
496
            luma_weight_avg(  dest_y,  tmp_y,  h->  mb_linesize, 5, weight0, weight1, 0);
497
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
498
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
499
        }else{
500
            luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
501
                            h->luma_weight[0][refn0], h->luma_weight[1][refn1],
502
                            h->luma_offset[0][refn0] + h->luma_offset[1][refn1]);
503
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
504
                            h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0],
505
                            h->chroma_offset[0][refn0][0] + h->chroma_offset[1][refn1][0]);
506
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
507
                            h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1],
508
                            h->chroma_offset[0][refn0][1] + h->chroma_offset[1][refn1][1]);
509
        }
510
    }else{
511
        int list = list1 ? 1 : 0;
512
        int refn = h->ref_cache[list][ scan8[n] ];
513
        Picture *ref= &h->ref_list[list][refn];
514
        mc_dir_part(h, ref, n, square, chroma_height, delta, list,
515
                    dest_y, dest_cb, dest_cr, x_offset, y_offset,
516
                    qpix_put, chroma_put);
517

    
518
        luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
519
                       h->luma_weight[list][refn], h->luma_offset[list][refn]);
520
        if(h->use_weight_chroma){
521
            chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
522
                             h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]);
523
            chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
524
                             h->chroma_weight[list][refn][1], h->chroma_offset[list][refn][1]);
525
        }
526
    }
527
}
528

    
529
static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
530
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
531
                           int x_offset, int y_offset,
532
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
533
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
534
                           h264_weight_func *weight_op, h264_biweight_func *weight_avg,
535
                           int list0, int list1){
536
    if((h->use_weight==2 && list0 && list1
537
        && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32))
538
       || h->use_weight==1)
539
        mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
540
                         x_offset, y_offset, qpix_put, chroma_put,
541
                         weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
542
    else
543
        mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
544
                    x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
545
}
546

    
547
static inline void prefetch_motion(H264Context *h, int list){
548
    /* fetch pixels for estimated mv 4 macroblocks ahead
549
     * optimized for 64byte cache lines */
550
    MpegEncContext * const s = &h->s;
551
    const int refn = h->ref_cache[list][scan8[0]];
552
    if(refn >= 0){
553
        const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
554
        const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
555
        uint8_t **src= h->ref_list[list][refn].data;
556
        int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
557
        s->dsp.prefetch(src[0]+off, s->linesize, 4);
558
        off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
559
        s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
560
    }
561
}
562

    
563
static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
564
                      qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
565
                      qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
566
                      h264_weight_func *weight_op, h264_biweight_func *weight_avg){
567
    MpegEncContext * const s = &h->s;
568
    const int mb_xy= h->mb_xy;
569
    const int mb_type= s->current_picture.mb_type[mb_xy];
570

    
571
    assert(IS_INTER(mb_type));
572

    
573
    prefetch_motion(h, 0);
574

    
575
    if(IS_16X16(mb_type)){
576
        mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
577
                qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
578
                weight_op, weight_avg,
579
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
580
    }else if(IS_16X8(mb_type)){
581
        mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
582
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
583
                &weight_op[1], &weight_avg[1],
584
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
585
        mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
586
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
587
                &weight_op[1], &weight_avg[1],
588
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
589
    }else if(IS_8X16(mb_type)){
590
        mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
591
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
592
                &weight_op[2], &weight_avg[2],
593
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
594
        mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
595
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
596
                &weight_op[2], &weight_avg[2],
597
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
598
    }else{
599
        int i;
600

    
601
        assert(IS_8X8(mb_type));
602

    
603
        for(i=0; i<4; i++){
604
            const int sub_mb_type= h->sub_mb_type[i];
605
            const int n= 4*i;
606
            int x_offset= (i&1)<<2;
607
            int y_offset= (i&2)<<1;
608

    
609
            if(IS_SUB_8X8(sub_mb_type)){
610
                mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
611
                    qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
612
                    &weight_op[3], &weight_avg[3],
613
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
614
            }else if(IS_SUB_8X4(sub_mb_type)){
615
                mc_part(h, n  , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
616
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
617
                    &weight_op[4], &weight_avg[4],
618
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
619
                mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
620
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
621
                    &weight_op[4], &weight_avg[4],
622
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
623
            }else if(IS_SUB_4X8(sub_mb_type)){
624
                mc_part(h, n  , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
625
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
626
                    &weight_op[5], &weight_avg[5],
627
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
628
                mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
629
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
630
                    &weight_op[5], &weight_avg[5],
631
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
632
            }else{
633
                int j;
634
                assert(IS_SUB_4X4(sub_mb_type));
635
                for(j=0; j<4; j++){
636
                    int sub_x_offset= x_offset + 2*(j&1);
637
                    int sub_y_offset= y_offset +   (j&2);
638
                    mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
639
                        qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
640
                        &weight_op[6], &weight_avg[6],
641
                        IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
642
                }
643
            }
644
        }
645
    }
646

    
647
    prefetch_motion(h, 1);
648
}
649

    
650

    
651
static void free_tables(H264Context *h){
652
    int i;
653
    H264Context *hx;
654
    av_freep(&h->intra4x4_pred_mode);
655
    av_freep(&h->chroma_pred_mode_table);
656
    av_freep(&h->cbp_table);
657
    av_freep(&h->mvd_table[0]);
658
    av_freep(&h->mvd_table[1]);
659
    av_freep(&h->direct_table);
660
    av_freep(&h->non_zero_count);
661
    av_freep(&h->slice_table_base);
662
    h->slice_table= NULL;
663
    av_freep(&h->list_counts);
664

    
665
    av_freep(&h->mb2b_xy);
666
    av_freep(&h->mb2b8_xy);
667

    
668
    for(i = 0; i < MAX_THREADS; i++) {
669
        hx = h->thread_context[i];
670
        if(!hx) continue;
671
        av_freep(&hx->top_borders[1]);
672
        av_freep(&hx->top_borders[0]);
673
        av_freep(&hx->s.obmc_scratchpad);
674
        av_freep(&hx->rbsp_buffer[1]);
675
        av_freep(&hx->rbsp_buffer[0]);
676
        hx->rbsp_buffer_size[0] = 0;
677
        hx->rbsp_buffer_size[1] = 0;
678
        if (i) av_freep(&h->thread_context[i]);
679
    }
680
}
681

    
682
static void init_dequant8_coeff_table(H264Context *h){
683
    int i,q,x;
684
    const int transpose = (h->s.dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
685
    h->dequant8_coeff[0] = h->dequant8_buffer[0];
686
    h->dequant8_coeff[1] = h->dequant8_buffer[1];
687

    
688
    for(i=0; i<2; i++ ){
689
        if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
690
            h->dequant8_coeff[1] = h->dequant8_buffer[0];
691
            break;
692
        }
693

    
694
        for(q=0; q<52; q++){
695
            int shift = div6[q];
696
            int idx = rem6[q];
697
            for(x=0; x<64; x++)
698
                h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
699
                    ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
700
                    h->pps.scaling_matrix8[i][x]) << shift;
701
        }
702
    }
703
}
704

    
705
static void init_dequant4_coeff_table(H264Context *h){
706
    int i,j,q,x;
707
    const int transpose = (h->s.dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
708
    for(i=0; i<6; i++ ){
709
        h->dequant4_coeff[i] = h->dequant4_buffer[i];
710
        for(j=0; j<i; j++){
711
            if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
712
                h->dequant4_coeff[i] = h->dequant4_buffer[j];
713
                break;
714
            }
715
        }
716
        if(j<i)
717
            continue;
718

    
719
        for(q=0; q<52; q++){
720
            int shift = div6[q] + 2;
721
            int idx = rem6[q];
722
            for(x=0; x<16; x++)
723
                h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
724
                    ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
725
                    h->pps.scaling_matrix4[i][x]) << shift;
726
        }
727
    }
728
}
729

    
730
static void init_dequant_tables(H264Context *h){
731
    int i,x;
732
    init_dequant4_coeff_table(h);
733
    if(h->pps.transform_8x8_mode)
734
        init_dequant8_coeff_table(h);
735
    if(h->sps.transform_bypass){
736
        for(i=0; i<6; i++)
737
            for(x=0; x<16; x++)
738
                h->dequant4_coeff[i][0][x] = 1<<6;
739
        if(h->pps.transform_8x8_mode)
740
            for(i=0; i<2; i++)
741
                for(x=0; x<64; x++)
742
                    h->dequant8_coeff[i][0][x] = 1<<6;
743
    }
744
}
745

    
746

    
747
int ff_h264_alloc_tables(H264Context *h){
748
    MpegEncContext * const s = &h->s;
749
    const int big_mb_num= s->mb_stride * (s->mb_height+1);
750
    int x,y;
751

    
752
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, big_mb_num * 8  * sizeof(uint8_t), fail)
753

    
754
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count    , big_mb_num * 32 * sizeof(uint8_t), fail)
755
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base  , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base), fail)
756
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table, big_mb_num * sizeof(uint16_t), fail)
757

    
758
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t), fail)
759
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0], 32*big_mb_num * sizeof(uint16_t), fail);
760
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t), fail);
761
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 32*big_mb_num * sizeof(uint8_t) , fail);
762
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->list_counts, big_mb_num * sizeof(uint8_t), fail)
763

    
764
    memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride)  * sizeof(*h->slice_table_base));
765
    h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
766

    
767
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy  , big_mb_num * sizeof(uint32_t), fail);
768
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b8_xy , big_mb_num * sizeof(uint32_t), fail);
769
    for(y=0; y<s->mb_height; y++){
770
        for(x=0; x<s->mb_width; x++){
771
            const int mb_xy= x + y*s->mb_stride;
772
            const int b_xy = 4*x + 4*y*h->b_stride;
773
            const int b8_xy= 2*x + 2*y*h->b8_stride;
774

    
775
            h->mb2b_xy [mb_xy]= b_xy;
776
            h->mb2b8_xy[mb_xy]= b8_xy;
777
        }
778
    }
779

    
780
    s->obmc_scratchpad = NULL;
781

    
782
    if(!h->dequant4_coeff[0])
783
        init_dequant_tables(h);
784

    
785
    return 0;
786
fail:
787
    free_tables(h);
788
    return -1;
789
}
790

    
791
/**
792
 * Mimic alloc_tables(), but for every context thread.
793
 */
794
static void clone_tables(H264Context *dst, H264Context *src){
795
    dst->intra4x4_pred_mode       = src->intra4x4_pred_mode;
796
    dst->non_zero_count           = src->non_zero_count;
797
    dst->slice_table              = src->slice_table;
798
    dst->cbp_table                = src->cbp_table;
799
    dst->mb2b_xy                  = src->mb2b_xy;
800
    dst->mb2b8_xy                 = src->mb2b8_xy;
801
    dst->chroma_pred_mode_table   = src->chroma_pred_mode_table;
802
    dst->mvd_table[0]             = src->mvd_table[0];
803
    dst->mvd_table[1]             = src->mvd_table[1];
804
    dst->direct_table             = src->direct_table;
805
    dst->list_counts              = src->list_counts;
806

    
807
    dst->s.obmc_scratchpad = NULL;
808
    ff_h264_pred_init(&dst->hpc, src->s.codec_id);
809
}
810

    
811
/**
812
 * Init context
813
 * Allocate buffers which are not shared amongst multiple threads.
814
 */
815
static int context_init(H264Context *h){
816
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
817
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
818

    
819
    return 0;
820
fail:
821
    return -1; // free_tables will clean up for us
822
}
823

    
824
static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size);
825

    
826
static av_cold void common_init(H264Context *h){
827
    MpegEncContext * const s = &h->s;
828

    
829
    s->width = s->avctx->width;
830
    s->height = s->avctx->height;
831
    s->codec_id= s->avctx->codec->id;
832

    
833
    ff_h264_pred_init(&h->hpc, s->codec_id);
834

    
835
    h->dequant_coeff_pps= -1;
836
    s->unrestricted_mv=1;
837
    s->decode=1; //FIXME
838

    
839
    dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early
840

    
841
    memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
842
    memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
843
}
844

    
845
av_cold int ff_h264_decode_init(AVCodecContext *avctx){
846
    H264Context *h= avctx->priv_data;
847
    MpegEncContext * const s = &h->s;
848

    
849
    MPV_decode_defaults(s);
850

    
851
    s->avctx = avctx;
852
    common_init(h);
853

    
854
    s->out_format = FMT_H264;
855
    s->workaround_bugs= avctx->workaround_bugs;
856

    
857
    // set defaults
858
//    s->decode_mb= ff_h263_decode_mb;
859
    s->quarter_sample = 1;
860
    if(!avctx->has_b_frames)
861
    s->low_delay= 1;
862

    
863
    avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
864

    
865
    ff_h264_decode_init_vlc();
866

    
867
    h->thread_context[0] = h;
868
    h->outputed_poc = INT_MIN;
869
    h->prev_poc_msb= 1<<16;
870
    h->x264_build = -1;
871
    ff_h264_reset_sei(h);
872
    if(avctx->codec_id == CODEC_ID_H264){
873
        if(avctx->ticks_per_frame == 1){
874
            s->avctx->time_base.den *=2;
875
        }
876
        avctx->ticks_per_frame = 2;
877
    }
878

    
879
    if(avctx->extradata_size > 0 && avctx->extradata && *(char *)avctx->extradata == 1){
880
        int i, cnt, nalsize;
881
        unsigned char *p = avctx->extradata;
882

    
883
        h->is_avc = 1;
884

    
885
        if(avctx->extradata_size < 7) {
886
            av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
887
            return -1;
888
        }
889
        /* sps and pps in the avcC always have length coded with 2 bytes,
890
           so put a fake nal_length_size = 2 while parsing them */
891
        h->nal_length_size = 2;
892
        // Decode sps from avcC
893
        cnt = *(p+5) & 0x1f; // Number of sps
894
        p += 6;
895
        for (i = 0; i < cnt; i++) {
896
            nalsize = AV_RB16(p) + 2;
897
            if(decode_nal_units(h, p, nalsize) < 0) {
898
                av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
899
                return -1;
900
            }
901
            p += nalsize;
902
        }
903
        // Decode pps from avcC
904
        cnt = *(p++); // Number of pps
905
        for (i = 0; i < cnt; i++) {
906
            nalsize = AV_RB16(p) + 2;
907
            if(decode_nal_units(h, p, nalsize)  != nalsize) {
908
                av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
909
                return -1;
910
            }
911
            p += nalsize;
912
        }
913
        // Now store right nal length size, that will be use to parse all other nals
914
        h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
915
    } else {
916
        h->is_avc = 0;
917
        if(decode_nal_units(h, s->avctx->extradata, s->avctx->extradata_size) < 0)
918
            return -1;
919
    }
920
    if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames < h->sps.num_reorder_frames){
921
        s->avctx->has_b_frames = h->sps.num_reorder_frames;
922
        s->low_delay = 0;
923
    }
924

    
925
    return 0;
926
}
927

    
928
int ff_h264_frame_start(H264Context *h){
929
    MpegEncContext * const s = &h->s;
930
    int i;
931

    
932
    if(MPV_frame_start(s, s->avctx) < 0)
933
        return -1;
934
    ff_er_frame_start(s);
935
    /*
936
     * MPV_frame_start uses pict_type to derive key_frame.
937
     * This is incorrect for H.264; IDR markings must be used.
938
     * Zero here; IDR markings per slice in frame or fields are ORed in later.
939
     * See decode_nal_units().
940
     */
941
    s->current_picture_ptr->key_frame= 0;
942
    s->current_picture_ptr->mmco_reset= 0;
943

    
944
    assert(s->linesize && s->uvlinesize);
945

    
946
    for(i=0; i<16; i++){
947
        h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
948
        h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
949
    }
950
    for(i=0; i<4; i++){
951
        h->block_offset[16+i]=
952
        h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
953
        h->block_offset[24+16+i]=
954
        h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
955
    }
956

    
957
    /* can't be in alloc_tables because linesize isn't known there.
958
     * FIXME: redo bipred weight to not require extra buffer? */
959
    for(i = 0; i < s->avctx->thread_count; i++)
960
        if(!h->thread_context[i]->s.obmc_scratchpad)
961
            h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
962

    
963
    /* some macroblocks will be accessed before they're available */
964
    if(FRAME_MBAFF || s->avctx->thread_count > 1)
965
        memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
966

    
967
//    s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
968

    
969
    // We mark the current picture as non-reference after allocating it, so
970
    // that if we break out due to an error it can be released automatically
971
    // in the next MPV_frame_start().
972
    // SVQ3 as well as most other codecs have only last/next/current and thus
973
    // get released even with set reference, besides SVQ3 and others do not
974
    // mark frames as reference later "naturally".
975
    if(s->codec_id != CODEC_ID_SVQ3)
976
        s->current_picture_ptr->reference= 0;
977

    
978
    s->current_picture_ptr->field_poc[0]=
979
    s->current_picture_ptr->field_poc[1]= INT_MAX;
980
    assert(s->current_picture_ptr->long_ref==0);
981

    
982
    return 0;
983
}
984

    
985
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){
986
    MpegEncContext * const s = &h->s;
987
    uint8_t *top_border;
988
    int top_idx = 1;
989

    
990
    src_y  -=   linesize;
991
    src_cb -= uvlinesize;
992
    src_cr -= uvlinesize;
993

    
994
    if(!simple && FRAME_MBAFF){
995
        if(s->mb_y&1){
996
            if(!MB_MBAFF){
997
                top_border = h->top_borders[0][s->mb_x];
998
                AV_COPY128(top_border, src_y + 15*linesize);
999
                if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1000
                    AV_COPY64(top_border+16, src_cb+7*uvlinesize);
1001
                    AV_COPY64(top_border+24, src_cr+7*uvlinesize);
1002
                }
1003
            }
1004
        }else if(MB_MBAFF){
1005
            top_idx = 0;
1006
        }else
1007
            return;
1008
    }
1009

    
1010
    top_border = h->top_borders[top_idx][s->mb_x];
1011
    // There are two lines saved, the line above the the top macroblock of a pair,
1012
    // and the line above the bottom macroblock
1013
    AV_COPY128(top_border, src_y + 16*linesize);
1014

    
1015
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1016
        AV_COPY64(top_border+16, src_cb+8*uvlinesize);
1017
        AV_COPY64(top_border+24, src_cr+8*uvlinesize);
1018
    }
1019
}
1020

    
1021
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){
1022
    MpegEncContext * const s = &h->s;
1023
    int deblock_left;
1024
    int deblock_top;
1025
    int top_idx = 1;
1026
    uint8_t *top_border_m1;
1027
    uint8_t *top_border;
1028

    
1029
    if(!simple && FRAME_MBAFF){
1030
        if(s->mb_y&1){
1031
            if(!MB_MBAFF)
1032
                return;
1033
        }else{
1034
            top_idx = MB_MBAFF ? 0 : 1;
1035
        }
1036
    }
1037

    
1038
    if(h->deblocking_filter == 2) {
1039
        deblock_left = h->left_type[0];
1040
        deblock_top  = h->top_type;
1041
    } else {
1042
        deblock_left = (s->mb_x > 0);
1043
        deblock_top =  (s->mb_y > !!MB_FIELD);
1044
    }
1045

    
1046
    src_y  -=   linesize + 1;
1047
    src_cb -= uvlinesize + 1;
1048
    src_cr -= uvlinesize + 1;
1049

    
1050
    top_border_m1 = h->top_borders[top_idx][s->mb_x-1];
1051
    top_border    = h->top_borders[top_idx][s->mb_x];
1052

    
1053
#define XCHG(a,b,xchg)\
1054
if (xchg) AV_SWAP64(b,a);\
1055
else      AV_COPY64(b,a);
1056

    
1057
    if(deblock_top){
1058
        if(deblock_left){
1059
            XCHG(top_border_m1+8, src_y -7, 1);
1060
        }
1061
        XCHG(top_border+0, src_y +1, xchg);
1062
        XCHG(top_border+8, src_y +9, 1);
1063
        if(s->mb_x+1 < s->mb_width){
1064
            XCHG(h->top_borders[top_idx][s->mb_x+1], src_y +17, 1);
1065
        }
1066
    }
1067

    
1068
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1069
        if(deblock_top){
1070
            if(deblock_left){
1071
                XCHG(top_border_m1+16, src_cb -7, 1);
1072
                XCHG(top_border_m1+24, src_cr -7, 1);
1073
            }
1074
            XCHG(top_border+16, src_cb+1, 1);
1075
            XCHG(top_border+24, src_cr+1, 1);
1076
        }
1077
    }
1078
}
1079

    
1080
static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
1081
    MpegEncContext * const s = &h->s;
1082
    const int mb_x= s->mb_x;
1083
    const int mb_y= s->mb_y;
1084
    const int mb_xy= h->mb_xy;
1085
    const int mb_type= s->current_picture.mb_type[mb_xy];
1086
    uint8_t  *dest_y, *dest_cb, *dest_cr;
1087
    int linesize, uvlinesize /*dct_offset*/;
1088
    int i;
1089
    int *block_offset = &h->block_offset[0];
1090
    const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
1091
    /* is_h264 should always be true if SVQ3 is disabled. */
1092
    const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
1093
    void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1094
    void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
1095

    
1096
    dest_y  = s->current_picture.data[0] + (mb_x + mb_y * s->linesize  ) * 16;
1097
    dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
1098
    dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
1099

    
1100
    s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
1101
    s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
1102

    
1103
    h->list_counts[mb_xy]= h->list_count;
1104

    
1105
    if (!simple && MB_FIELD) {
1106
        linesize   = h->mb_linesize   = s->linesize * 2;
1107
        uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
1108
        block_offset = &h->block_offset[24];
1109
        if(mb_y&1){ //FIXME move out of this function?
1110
            dest_y -= s->linesize*15;
1111
            dest_cb-= s->uvlinesize*7;
1112
            dest_cr-= s->uvlinesize*7;
1113
        }
1114
        if(FRAME_MBAFF) {
1115
            int list;
1116
            for(list=0; list<h->list_count; list++){
1117
                if(!USES_LIST(mb_type, list))
1118
                    continue;
1119
                if(IS_16X16(mb_type)){
1120
                    int8_t *ref = &h->ref_cache[list][scan8[0]];
1121
                    fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
1122
                }else{
1123
                    for(i=0; i<16; i+=4){
1124
                        int ref = h->ref_cache[list][scan8[i]];
1125
                        if(ref >= 0)
1126
                            fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
1127
                    }
1128
                }
1129
            }
1130
        }
1131
    } else {
1132
        linesize   = h->mb_linesize   = s->linesize;
1133
        uvlinesize = h->mb_uvlinesize = s->uvlinesize;
1134
//        dct_offset = s->linesize * 16;
1135
    }
1136

    
1137
    if (!simple && IS_INTRA_PCM(mb_type)) {
1138
        for (i=0; i<16; i++) {
1139
            memcpy(dest_y + i*  linesize, h->mb       + i*8, 16);
1140
        }
1141
        for (i=0; i<8; i++) {
1142
            memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4,  8);
1143
            memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4,  8);
1144
        }
1145
    } else {
1146
        if(IS_INTRA(mb_type)){
1147
            if(h->deblocking_filter)
1148
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
1149

    
1150
            if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1151
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
1152
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
1153
            }
1154

    
1155
            if(IS_INTRA4x4(mb_type)){
1156
                if(simple || !s->encoding){
1157
                    if(IS_8x8DCT(mb_type)){
1158
                        if(transform_bypass){
1159
                            idct_dc_add =
1160
                            idct_add    = s->dsp.add_pixels8;
1161
                        }else{
1162
                            idct_dc_add = s->dsp.h264_idct8_dc_add;
1163
                            idct_add    = s->dsp.h264_idct8_add;
1164
                        }
1165
                        for(i=0; i<16; i+=4){
1166
                            uint8_t * const ptr= dest_y + block_offset[i];
1167
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1168
                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1169
                                h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
1170
                            }else{
1171
                                const int nnz = h->non_zero_count_cache[ scan8[i] ];
1172
                                h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
1173
                                                            (h->topright_samples_available<<i)&0x4000, linesize);
1174
                                if(nnz){
1175
                                    if(nnz == 1 && h->mb[i*16])
1176
                                        idct_dc_add(ptr, h->mb + i*16, linesize);
1177
                                    else
1178
                                        idct_add   (ptr, h->mb + i*16, linesize);
1179
                                }
1180
                            }
1181
                        }
1182
                    }else{
1183
                        if(transform_bypass){
1184
                            idct_dc_add =
1185
                            idct_add    = s->dsp.add_pixels4;
1186
                        }else{
1187
                            idct_dc_add = s->dsp.h264_idct_dc_add;
1188
                            idct_add    = s->dsp.h264_idct_add;
1189
                        }
1190
                        for(i=0; i<16; i++){
1191
                            uint8_t * const ptr= dest_y + block_offset[i];
1192
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1193

    
1194
                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1195
                                h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
1196
                            }else{
1197
                                uint8_t *topright;
1198
                                int nnz, tr;
1199
                                if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
1200
                                    const int topright_avail= (h->topright_samples_available<<i)&0x8000;
1201
                                    assert(mb_y || linesize <= block_offset[i]);
1202
                                    if(!topright_avail){
1203
                                        tr= ptr[3 - linesize]*0x01010101;
1204
                                        topright= (uint8_t*) &tr;
1205
                                    }else
1206
                                        topright= ptr + 4 - linesize;
1207
                                }else
1208
                                    topright= NULL;
1209

    
1210
                                h->hpc.pred4x4[ dir ](ptr, topright, linesize);
1211
                                nnz = h->non_zero_count_cache[ scan8[i] ];
1212
                                if(nnz){
1213
                                    if(is_h264){
1214
                                        if(nnz == 1 && h->mb[i*16])
1215
                                            idct_dc_add(ptr, h->mb + i*16, linesize);
1216
                                        else
1217
                                            idct_add   (ptr, h->mb + i*16, linesize);
1218
                                    }else
1219
                                        ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
1220
                                }
1221
                            }
1222
                        }
1223
                    }
1224
                }
1225
            }else{
1226
                h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
1227
                if(is_h264){
1228
                    if(!transform_bypass)
1229
                        h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
1230
                }else
1231
                    ff_svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
1232
            }
1233
            if(h->deblocking_filter)
1234
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
1235
        }else if(is_h264){
1236
            hl_motion(h, dest_y, dest_cb, dest_cr,
1237
                      s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1238
                      s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1239
                      s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab);
1240
        }
1241

    
1242

    
1243
        if(!IS_INTRA4x4(mb_type)){
1244
            if(is_h264){
1245
                if(IS_INTRA16x16(mb_type)){
1246
                    if(transform_bypass){
1247
                        if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
1248
                            h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
1249
                        }else{
1250
                            for(i=0; i<16; i++){
1251
                                if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1252
                                    s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
1253
                            }
1254
                        }
1255
                    }else{
1256
                         s->dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1257
                    }
1258
                }else if(h->cbp&15){
1259
                    if(transform_bypass){
1260
                        const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1261
                        idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
1262
                        for(i=0; i<16; i+=di){
1263
                            if(h->non_zero_count_cache[ scan8[i] ]){
1264
                                idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
1265
                            }
1266
                        }
1267
                    }else{
1268
                        if(IS_8x8DCT(mb_type)){
1269
                            s->dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1270
                        }else{
1271
                            s->dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1272
                        }
1273
                    }
1274
                }
1275
            }else{
1276
                for(i=0; i<16; i++){
1277
                    if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
1278
                        uint8_t * const ptr= dest_y + block_offset[i];
1279
                        ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1280
                    }
1281
                }
1282
            }
1283
        }
1284

    
1285
        if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
1286
            uint8_t *dest[2] = {dest_cb, dest_cr};
1287
            if(transform_bypass){
1288
                if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
1289
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
1290
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
1291
                }else{
1292
                    idct_add = s->dsp.add_pixels4;
1293
                    for(i=16; i<16+8; i++){
1294
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1295
                            idct_add   (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1296
                    }
1297
                }
1298
            }else{
1299
                chroma_dc_dequant_idct_c(h->mb + 16*16, h->chroma_qp[0], h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
1300
                chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp[1], h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp[1]][0]);
1301
                if(is_h264){
1302
                    idct_add = s->dsp.h264_idct_add;
1303
                    idct_dc_add = s->dsp.h264_idct_dc_add;
1304
                    for(i=16; i<16+8; i++){
1305
                        if(h->non_zero_count_cache[ scan8[i] ])
1306
                            idct_add   (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1307
                        else if(h->mb[i*16])
1308
                            idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1309
                    }
1310
                }else{
1311
                    for(i=16; i<16+8; i++){
1312
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
1313
                            uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
1314
                            ff_svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[s->qscale + 12] - 12, 2);
1315
                        }
1316
                    }
1317
                }
1318
            }
1319
        }
1320
    }
1321
    if(h->cbp || IS_INTRA(mb_type))
1322
        s->dsp.clear_blocks(h->mb);
1323
}
1324

    
1325
/**
1326
 * Process a macroblock; this case avoids checks for expensive uncommon cases.
1327
 */
1328
static void hl_decode_mb_simple(H264Context *h){
1329
    hl_decode_mb_internal(h, 1);
1330
}
1331

    
1332
/**
1333
 * Process a macroblock; this handles edge cases, such as interlacing.
1334
 */
1335
static void av_noinline hl_decode_mb_complex(H264Context *h){
1336
    hl_decode_mb_internal(h, 0);
1337
}
1338

    
1339
void ff_h264_hl_decode_mb(H264Context *h){
1340
    MpegEncContext * const s = &h->s;
1341
    const int mb_xy= h->mb_xy;
1342
    const int mb_type= s->current_picture.mb_type[mb_xy];
1343
    int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1344

    
1345
    if (is_complex)
1346
        hl_decode_mb_complex(h);
1347
    else hl_decode_mb_simple(h);
1348
}
1349

    
1350
static int pred_weight_table(H264Context *h){
1351
    MpegEncContext * const s = &h->s;
1352
    int list, i;
1353
    int luma_def, chroma_def;
1354

    
1355
    h->use_weight= 0;
1356
    h->use_weight_chroma= 0;
1357
    h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
1358
    h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
1359
    luma_def = 1<<h->luma_log2_weight_denom;
1360
    chroma_def = 1<<h->chroma_log2_weight_denom;
1361

    
1362
    for(list=0; list<2; list++){
1363
        h->luma_weight_flag[list]   = 0;
1364
        h->chroma_weight_flag[list] = 0;
1365
        for(i=0; i<h->ref_count[list]; i++){
1366
            int luma_weight_flag, chroma_weight_flag;
1367

    
1368
            luma_weight_flag= get_bits1(&s->gb);
1369
            if(luma_weight_flag){
1370
                h->luma_weight[list][i]= get_se_golomb(&s->gb);
1371
                h->luma_offset[list][i]= get_se_golomb(&s->gb);
1372
                if(   h->luma_weight[list][i] != luma_def
1373
                   || h->luma_offset[list][i] != 0) {
1374
                    h->use_weight= 1;
1375
                    h->luma_weight_flag[list]= 1;
1376
                }
1377
            }else{
1378
                h->luma_weight[list][i]= luma_def;
1379
                h->luma_offset[list][i]= 0;
1380
            }
1381

    
1382
            if(CHROMA){
1383
                chroma_weight_flag= get_bits1(&s->gb);
1384
                if(chroma_weight_flag){
1385
                    int j;
1386
                    for(j=0; j<2; j++){
1387
                        h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
1388
                        h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
1389
                        if(   h->chroma_weight[list][i][j] != chroma_def
1390
                           || h->chroma_offset[list][i][j] != 0) {
1391
                            h->use_weight_chroma= 1;
1392
                            h->chroma_weight_flag[list]= 1;
1393
                        }
1394
                    }
1395
                }else{
1396
                    int j;
1397
                    for(j=0; j<2; j++){
1398
                        h->chroma_weight[list][i][j]= chroma_def;
1399
                        h->chroma_offset[list][i][j]= 0;
1400
                    }
1401
                }
1402
            }
1403
        }
1404
        if(h->slice_type_nos != FF_B_TYPE) break;
1405
    }
1406
    h->use_weight= h->use_weight || h->use_weight_chroma;
1407
    return 0;
1408
}
1409

    
1410
static void implicit_weight_table(H264Context *h){
1411
    MpegEncContext * const s = &h->s;
1412
    int ref0, ref1, i;
1413
    int cur_poc = s->current_picture_ptr->poc;
1414

    
1415
    for (i = 0; i < 2; i++) {
1416
        h->luma_weight_flag[i]   = 0;
1417
        h->chroma_weight_flag[i] = 0;
1418
    }
1419

    
1420
    if(   h->ref_count[0] == 1 && h->ref_count[1] == 1
1421
       && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
1422
        h->use_weight= 0;
1423
        h->use_weight_chroma= 0;
1424
        return;
1425
    }
1426

    
1427
    h->use_weight= 2;
1428
    h->use_weight_chroma= 2;
1429
    h->luma_log2_weight_denom= 5;
1430
    h->chroma_log2_weight_denom= 5;
1431

    
1432
    for(ref0=0; ref0 < h->ref_count[0]; ref0++){
1433
        int poc0 = h->ref_list[0][ref0].poc;
1434
        for(ref1=0; ref1 < h->ref_count[1]; ref1++){
1435
            int poc1 = h->ref_list[1][ref1].poc;
1436
            int td = av_clip(poc1 - poc0, -128, 127);
1437
            if(td){
1438
                int tb = av_clip(cur_poc - poc0, -128, 127);
1439
                int tx = (16384 + (FFABS(td) >> 1)) / td;
1440
                int dist_scale_factor = av_clip((tb*tx + 32) >> 6, -1024, 1023) >> 2;
1441
                if(dist_scale_factor < -64 || dist_scale_factor > 128)
1442
                    h->implicit_weight[ref0][ref1] = 32;
1443
                else
1444
                    h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor;
1445
            }else
1446
                h->implicit_weight[ref0][ref1] = 32;
1447
        }
1448
    }
1449
}
1450

    
1451
/**
1452
 * instantaneous decoder refresh.
1453
 */
1454
static void idr(H264Context *h){
1455
    ff_h264_remove_all_refs(h);
1456
    h->prev_frame_num= 0;
1457
    h->prev_frame_num_offset= 0;
1458
    h->prev_poc_msb=
1459
    h->prev_poc_lsb= 0;
1460
}
1461

    
1462
/* forget old pics after a seek */
1463
static void flush_dpb(AVCodecContext *avctx){
1464
    H264Context *h= avctx->priv_data;
1465
    int i;
1466
    for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
1467
        if(h->delayed_pic[i])
1468
            h->delayed_pic[i]->reference= 0;
1469
        h->delayed_pic[i]= NULL;
1470
    }
1471
    h->outputed_poc= INT_MIN;
1472
    h->prev_interlaced_frame = 1;
1473
    idr(h);
1474
    if(h->s.current_picture_ptr)
1475
        h->s.current_picture_ptr->reference= 0;
1476
    h->s.first_field= 0;
1477
    ff_h264_reset_sei(h);
1478
    ff_mpeg_flush(avctx);
1479
}
1480

    
1481
static int init_poc(H264Context *h){
1482
    MpegEncContext * const s = &h->s;
1483
    const int max_frame_num= 1<<h->sps.log2_max_frame_num;
1484
    int field_poc[2];
1485
    Picture *cur = s->current_picture_ptr;
1486

    
1487
    h->frame_num_offset= h->prev_frame_num_offset;
1488
    if(h->frame_num < h->prev_frame_num)
1489
        h->frame_num_offset += max_frame_num;
1490

    
1491
    if(h->sps.poc_type==0){
1492
        const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
1493

    
1494
        if     (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
1495
            h->poc_msb = h->prev_poc_msb + max_poc_lsb;
1496
        else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
1497
            h->poc_msb = h->prev_poc_msb - max_poc_lsb;
1498
        else
1499
            h->poc_msb = h->prev_poc_msb;
1500
//printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
1501
        field_poc[0] =
1502
        field_poc[1] = h->poc_msb + h->poc_lsb;
1503
        if(s->picture_structure == PICT_FRAME)
1504
            field_poc[1] += h->delta_poc_bottom;
1505
    }else if(h->sps.poc_type==1){
1506
        int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
1507
        int i;
1508

    
1509
        if(h->sps.poc_cycle_length != 0)
1510
            abs_frame_num = h->frame_num_offset + h->frame_num;
1511
        else
1512
            abs_frame_num = 0;
1513

    
1514
        if(h->nal_ref_idc==0 && abs_frame_num > 0)
1515
            abs_frame_num--;
1516

    
1517
        expected_delta_per_poc_cycle = 0;
1518
        for(i=0; i < h->sps.poc_cycle_length; i++)
1519
            expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
1520

    
1521
        if(abs_frame_num > 0){
1522
            int poc_cycle_cnt          = (abs_frame_num - 1) / h->sps.poc_cycle_length;
1523
            int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
1524

    
1525
            expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
1526
            for(i = 0; i <= frame_num_in_poc_cycle; i++)
1527
                expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
1528
        } else
1529
            expectedpoc = 0;
1530

    
1531
        if(h->nal_ref_idc == 0)
1532
            expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
1533

    
1534
        field_poc[0] = expectedpoc + h->delta_poc[0];
1535
        field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
1536

    
1537
        if(s->picture_structure == PICT_FRAME)
1538
            field_poc[1] += h->delta_poc[1];
1539
    }else{
1540
        int poc= 2*(h->frame_num_offset + h->frame_num);
1541

    
1542
        if(!h->nal_ref_idc)
1543
            poc--;
1544

    
1545
        field_poc[0]= poc;
1546
        field_poc[1]= poc;
1547
    }
1548

    
1549
    if(s->picture_structure != PICT_BOTTOM_FIELD)
1550
        s->current_picture_ptr->field_poc[0]= field_poc[0];
1551
    if(s->picture_structure != PICT_TOP_FIELD)
1552
        s->current_picture_ptr->field_poc[1]= field_poc[1];
1553
    cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
1554

    
1555
    return 0;
1556
}
1557

    
1558

    
1559
/**
1560
 * initialize scan tables
1561
 */
1562
static void init_scan_tables(H264Context *h){
1563
    MpegEncContext * const s = &h->s;
1564
    int i;
1565
    if(s->dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
1566
        memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
1567
        memcpy(h-> field_scan,  field_scan, 16*sizeof(uint8_t));
1568
    }else{
1569
        for(i=0; i<16; i++){
1570
#define T(x) (x>>2) | ((x<<2) & 0xF)
1571
            h->zigzag_scan[i] = T(zigzag_scan[i]);
1572
            h-> field_scan[i] = T( field_scan[i]);
1573
#undef T
1574
        }
1575
    }
1576
    if(s->dsp.h264_idct8_add == ff_h264_idct8_add_c){
1577
        memcpy(h->zigzag_scan8x8,       ff_zigzag_direct,     64*sizeof(uint8_t));
1578
        memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
1579
        memcpy(h->field_scan8x8,        field_scan8x8,        64*sizeof(uint8_t));
1580
        memcpy(h->field_scan8x8_cavlc,  field_scan8x8_cavlc,  64*sizeof(uint8_t));
1581
    }else{
1582
        for(i=0; i<64; i++){
1583
#define T(x) (x>>3) | ((x&7)<<3)
1584
            h->zigzag_scan8x8[i]       = T(ff_zigzag_direct[i]);
1585
            h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
1586
            h->field_scan8x8[i]        = T(field_scan8x8[i]);
1587
            h->field_scan8x8_cavlc[i]  = T(field_scan8x8_cavlc[i]);
1588
#undef T
1589
        }
1590
    }
1591
    if(h->sps.transform_bypass){ //FIXME same ugly
1592
        h->zigzag_scan_q0          = zigzag_scan;
1593
        h->zigzag_scan8x8_q0       = ff_zigzag_direct;
1594
        h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
1595
        h->field_scan_q0           = field_scan;
1596
        h->field_scan8x8_q0        = field_scan8x8;
1597
        h->field_scan8x8_cavlc_q0  = field_scan8x8_cavlc;
1598
    }else{
1599
        h->zigzag_scan_q0          = h->zigzag_scan;
1600
        h->zigzag_scan8x8_q0       = h->zigzag_scan8x8;
1601
        h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
1602
        h->field_scan_q0           = h->field_scan;
1603
        h->field_scan8x8_q0        = h->field_scan8x8;
1604
        h->field_scan8x8_cavlc_q0  = h->field_scan8x8_cavlc;
1605
    }
1606
}
1607

    
1608
static void field_end(H264Context *h){
1609
    MpegEncContext * const s = &h->s;
1610
    AVCodecContext * const avctx= s->avctx;
1611
    s->mb_y= 0;
1612

    
1613
    s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
1614
    s->current_picture_ptr->pict_type= s->pict_type;
1615

    
1616
    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1617
        ff_vdpau_h264_set_reference_frames(s);
1618

    
1619
    if(!s->dropable) {
1620
        ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1621
        h->prev_poc_msb= h->poc_msb;
1622
        h->prev_poc_lsb= h->poc_lsb;
1623
    }
1624
    h->prev_frame_num_offset= h->frame_num_offset;
1625
    h->prev_frame_num= h->frame_num;
1626

    
1627
    if (avctx->hwaccel) {
1628
        if (avctx->hwaccel->end_frame(avctx) < 0)
1629
            av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
1630
    }
1631

    
1632
    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1633
        ff_vdpau_h264_picture_complete(s);
1634

    
1635
    /*
1636
     * FIXME: Error handling code does not seem to support interlaced
1637
     * when slices span multiple rows
1638
     * The ff_er_add_slice calls don't work right for bottom
1639
     * fields; they cause massive erroneous error concealing
1640
     * Error marking covers both fields (top and bottom).
1641
     * This causes a mismatched s->error_count
1642
     * and a bad error table. Further, the error count goes to
1643
     * INT_MAX when called for bottom field, because mb_y is
1644
     * past end by one (callers fault) and resync_mb_y != 0
1645
     * causes problems for the first MB line, too.
1646
     */
1647
    if (!FIELD_PICTURE)
1648
        ff_er_frame_end(s);
1649

    
1650
    MPV_frame_end(s);
1651

    
1652
    h->current_slice=0;
1653
}
1654

    
1655
/**
1656
 * Replicates H264 "master" context to thread contexts.
1657
 */
1658
static void clone_slice(H264Context *dst, H264Context *src)
1659
{
1660
    memcpy(dst->block_offset,     src->block_offset, sizeof(dst->block_offset));
1661
    dst->s.current_picture_ptr  = src->s.current_picture_ptr;
1662
    dst->s.current_picture      = src->s.current_picture;
1663
    dst->s.linesize             = src->s.linesize;
1664
    dst->s.uvlinesize           = src->s.uvlinesize;
1665
    dst->s.first_field          = src->s.first_field;
1666

    
1667
    dst->prev_poc_msb           = src->prev_poc_msb;
1668
    dst->prev_poc_lsb           = src->prev_poc_lsb;
1669
    dst->prev_frame_num_offset  = src->prev_frame_num_offset;
1670
    dst->prev_frame_num         = src->prev_frame_num;
1671
    dst->short_ref_count        = src->short_ref_count;
1672

    
1673
    memcpy(dst->short_ref,        src->short_ref,        sizeof(dst->short_ref));
1674
    memcpy(dst->long_ref,         src->long_ref,         sizeof(dst->long_ref));
1675
    memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
1676
    memcpy(dst->ref_list,         src->ref_list,         sizeof(dst->ref_list));
1677

    
1678
    memcpy(dst->dequant4_coeff,   src->dequant4_coeff,   sizeof(src->dequant4_coeff));
1679
    memcpy(dst->dequant8_coeff,   src->dequant8_coeff,   sizeof(src->dequant8_coeff));
1680
}
1681

    
1682
/**
1683
 * decodes a slice header.
1684
 * This will also call MPV_common_init() and frame_start() as needed.
1685
 *
1686
 * @param h h264context
1687
 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
1688
 *
1689
 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
1690
 */
1691
static int decode_slice_header(H264Context *h, H264Context *h0){
1692
    MpegEncContext * const s = &h->s;
1693
    MpegEncContext * const s0 = &h0->s;
1694
    unsigned int first_mb_in_slice;
1695
    unsigned int pps_id;
1696
    int num_ref_idx_active_override_flag;
1697
    unsigned int slice_type, tmp, i, j;
1698
    int default_ref_list_done = 0;
1699
    int last_pic_structure;
1700

    
1701
    s->dropable= h->nal_ref_idc == 0;
1702

    
1703
    if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
1704
        s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
1705
        s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
1706
    }else{
1707
        s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
1708
        s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
1709
    }
1710

    
1711
    first_mb_in_slice= get_ue_golomb(&s->gb);
1712

    
1713
    if(first_mb_in_slice == 0){ //FIXME better field boundary detection
1714
        if(h0->current_slice && FIELD_PICTURE){
1715
            field_end(h);
1716
        }
1717

    
1718
        h0->current_slice = 0;
1719
        if (!s0->first_field)
1720
            s->current_picture_ptr= NULL;
1721
    }
1722

    
1723
    slice_type= get_ue_golomb_31(&s->gb);
1724
    if(slice_type > 9){
1725
        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);
1726
        return -1;
1727
    }
1728
    if(slice_type > 4){
1729
        slice_type -= 5;
1730
        h->slice_type_fixed=1;
1731
    }else
1732
        h->slice_type_fixed=0;
1733

    
1734
    slice_type= golomb_to_pict_type[ slice_type ];
1735
    if (slice_type == FF_I_TYPE
1736
        || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
1737
        default_ref_list_done = 1;
1738
    }
1739
    h->slice_type= slice_type;
1740
    h->slice_type_nos= slice_type & 3;
1741

    
1742
    s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
1743

    
1744
    pps_id= get_ue_golomb(&s->gb);
1745
    if(pps_id>=MAX_PPS_COUNT){
1746
        av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
1747
        return -1;
1748
    }
1749
    if(!h0->pps_buffers[pps_id]) {
1750
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
1751
        return -1;
1752
    }
1753
    h->pps= *h0->pps_buffers[pps_id];
1754

    
1755
    if(!h0->sps_buffers[h->pps.sps_id]) {
1756
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
1757
        return -1;
1758
    }
1759
    h->sps = *h0->sps_buffers[h->pps.sps_id];
1760

    
1761
    if(h == h0 && h->dequant_coeff_pps != pps_id){
1762
        h->dequant_coeff_pps = pps_id;
1763
        init_dequant_tables(h);
1764
    }
1765

    
1766
    s->mb_width= h->sps.mb_width;
1767
    s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
1768

    
1769
    h->b_stride=  s->mb_width*4;
1770
    h->b8_stride= s->mb_width*2;
1771

    
1772
    s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
1773
    if(h->sps.frame_mbs_only_flag)
1774
        s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
1775
    else
1776
        s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
1777

    
1778
    if (s->context_initialized
1779
        && (   s->width != s->avctx->width || s->height != s->avctx->height)) {
1780
        if(h != h0)
1781
            return -1;   // width / height changed during parallelized decoding
1782
        free_tables(h);
1783
        flush_dpb(s->avctx);
1784
        MPV_common_end(s);
1785
    }
1786
    if (!s->context_initialized) {
1787
        if(h != h0)
1788
            return -1;  // we cant (re-)initialize context during parallel decoding
1789

    
1790
        avcodec_set_dimensions(s->avctx, s->width, s->height);
1791
        s->avctx->sample_aspect_ratio= h->sps.sar;
1792
        if(!s->avctx->sample_aspect_ratio.den)
1793
            s->avctx->sample_aspect_ratio.den = 1;
1794

    
1795
        if(h->sps.video_signal_type_present_flag){
1796
            s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
1797
            if(h->sps.colour_description_present_flag){
1798
                s->avctx->color_primaries = h->sps.color_primaries;
1799
                s->avctx->color_trc       = h->sps.color_trc;
1800
                s->avctx->colorspace      = h->sps.colorspace;
1801
            }
1802
        }
1803

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

    
1814
        if (MPV_common_init(s) < 0)
1815
            return -1;
1816
        s->first_field = 0;
1817
        h->prev_interlaced_frame = 1;
1818

    
1819
        init_scan_tables(h);
1820
        ff_h264_alloc_tables(h);
1821

    
1822
        for(i = 1; i < s->avctx->thread_count; i++) {
1823
            H264Context *c;
1824
            c = h->thread_context[i] = av_malloc(sizeof(H264Context));
1825
            memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
1826
            memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
1827
            c->sps = h->sps;
1828
            c->pps = h->pps;
1829
            init_scan_tables(c);
1830
            clone_tables(c, h);
1831
        }
1832

    
1833
        for(i = 0; i < s->avctx->thread_count; i++)
1834
            if(context_init(h->thread_context[i]) < 0)
1835
                return -1;
1836
    }
1837

    
1838
    h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
1839

    
1840
    h->mb_mbaff = 0;
1841
    h->mb_aff_frame = 0;
1842
    last_pic_structure = s0->picture_structure;
1843
    if(h->sps.frame_mbs_only_flag){
1844
        s->picture_structure= PICT_FRAME;
1845
    }else{
1846
        if(get_bits1(&s->gb)) { //field_pic_flag
1847
            s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
1848
        } else {
1849
            s->picture_structure= PICT_FRAME;
1850
            h->mb_aff_frame = h->sps.mb_aff;
1851
        }
1852
    }
1853
    h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
1854

    
1855
    if(h0->current_slice == 0){
1856
        while(h->frame_num !=  h->prev_frame_num &&
1857
              h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
1858
            av_log(NULL, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
1859
            if (ff_h264_frame_start(h) < 0)
1860
                return -1;
1861
            h->prev_frame_num++;
1862
            h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
1863
            s->current_picture_ptr->frame_num= h->prev_frame_num;
1864
            ff_h264_execute_ref_pic_marking(h, NULL, 0);
1865
        }
1866

    
1867
        /* See if we have a decoded first field looking for a pair... */
1868
        if (s0->first_field) {
1869
            assert(s0->current_picture_ptr);
1870
            assert(s0->current_picture_ptr->data[0]);
1871
            assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
1872

    
1873
            /* figure out if we have a complementary field pair */
1874
            if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
1875
                /*
1876
                 * Previous field is unmatched. Don't display it, but let it
1877
                 * remain for reference if marked as such.
1878
                 */
1879
                s0->current_picture_ptr = NULL;
1880
                s0->first_field = FIELD_PICTURE;
1881

    
1882
            } else {
1883
                if (h->nal_ref_idc &&
1884
                        s0->current_picture_ptr->reference &&
1885
                        s0->current_picture_ptr->frame_num != h->frame_num) {
1886
                    /*
1887
                     * This and previous field were reference, but had
1888
                     * different frame_nums. Consider this field first in
1889
                     * pair. Throw away previous field except for reference
1890
                     * purposes.
1891
                     */
1892
                    s0->first_field = 1;
1893
                    s0->current_picture_ptr = NULL;
1894

    
1895
                } else {
1896
                    /* Second field in complementary pair */
1897
                    s0->first_field = 0;
1898
                }
1899
            }
1900

    
1901
        } else {
1902
            /* Frame or first field in a potentially complementary pair */
1903
            assert(!s0->current_picture_ptr);
1904
            s0->first_field = FIELD_PICTURE;
1905
        }
1906

    
1907
        if((!FIELD_PICTURE || s0->first_field) && ff_h264_frame_start(h) < 0) {
1908
            s0->first_field = 0;
1909
            return -1;
1910
        }
1911
    }
1912
    if(h != h0)
1913
        clone_slice(h, h0);
1914

    
1915
    s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
1916

    
1917
    assert(s->mb_num == s->mb_width * s->mb_height);
1918
    if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
1919
       first_mb_in_slice                    >= s->mb_num){
1920
        av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1921
        return -1;
1922
    }
1923
    s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
1924
    s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
1925
    if (s->picture_structure == PICT_BOTTOM_FIELD)
1926
        s->resync_mb_y = s->mb_y = s->mb_y + 1;
1927
    assert(s->mb_y < s->mb_height);
1928

    
1929
    if(s->picture_structure==PICT_FRAME){
1930
        h->curr_pic_num=   h->frame_num;
1931
        h->max_pic_num= 1<< h->sps.log2_max_frame_num;
1932
    }else{
1933
        h->curr_pic_num= 2*h->frame_num + 1;
1934
        h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
1935
    }
1936

    
1937
    if(h->nal_unit_type == NAL_IDR_SLICE){
1938
        get_ue_golomb(&s->gb); /* idr_pic_id */
1939
    }
1940

    
1941
    if(h->sps.poc_type==0){
1942
        h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
1943

    
1944
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
1945
            h->delta_poc_bottom= get_se_golomb(&s->gb);
1946
        }
1947
    }
1948

    
1949
    if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
1950
        h->delta_poc[0]= get_se_golomb(&s->gb);
1951

    
1952
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
1953
            h->delta_poc[1]= get_se_golomb(&s->gb);
1954
    }
1955

    
1956
    init_poc(h);
1957

    
1958
    if(h->pps.redundant_pic_cnt_present){
1959
        h->redundant_pic_count= get_ue_golomb(&s->gb);
1960
    }
1961

    
1962
    //set defaults, might be overridden a few lines later
1963
    h->ref_count[0]= h->pps.ref_count[0];
1964
    h->ref_count[1]= h->pps.ref_count[1];
1965

    
1966
    if(h->slice_type_nos != FF_I_TYPE){
1967
        if(h->slice_type_nos == FF_B_TYPE){
1968
            h->direct_spatial_mv_pred= get_bits1(&s->gb);
1969
        }
1970
        num_ref_idx_active_override_flag= get_bits1(&s->gb);
1971

    
1972
        if(num_ref_idx_active_override_flag){
1973
            h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
1974
            if(h->slice_type_nos==FF_B_TYPE)
1975
                h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
1976

    
1977
            if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
1978
                av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
1979
                h->ref_count[0]= h->ref_count[1]= 1;
1980
                return -1;
1981
            }
1982
        }
1983
        if(h->slice_type_nos == FF_B_TYPE)
1984
            h->list_count= 2;
1985
        else
1986
            h->list_count= 1;
1987
    }else
1988
        h->list_count= 0;
1989

    
1990
    if(!default_ref_list_done){
1991
        ff_h264_fill_default_ref_list(h);
1992
    }
1993

    
1994
    if(h->slice_type_nos!=FF_I_TYPE && ff_h264_decode_ref_pic_list_reordering(h) < 0)
1995
        return -1;
1996

    
1997
    if(h->slice_type_nos!=FF_I_TYPE){
1998
        s->last_picture_ptr= &h->ref_list[0][0];
1999
        ff_copy_picture(&s->last_picture, s->last_picture_ptr);
2000
    }
2001
    if(h->slice_type_nos==FF_B_TYPE){
2002
        s->next_picture_ptr= &h->ref_list[1][0];
2003
        ff_copy_picture(&s->next_picture, s->next_picture_ptr);
2004
    }
2005

    
2006
    if(   (h->pps.weighted_pred          && h->slice_type_nos == FF_P_TYPE )
2007
       ||  (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
2008
        pred_weight_table(h);
2009
    else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE)
2010
        implicit_weight_table(h);
2011
    else {
2012
        h->use_weight = 0;
2013
        for (i = 0; i < 2; i++) {
2014
            h->luma_weight_flag[i]   = 0;
2015
            h->chroma_weight_flag[i] = 0;
2016
        }
2017
    }
2018

    
2019
    if(h->nal_ref_idc)
2020
        ff_h264_decode_ref_pic_marking(h0, &s->gb);
2021

    
2022
    if(FRAME_MBAFF)
2023
        ff_h264_fill_mbaff_ref_list(h);
2024

    
2025
    if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
2026
        ff_h264_direct_dist_scale_factor(h);
2027
    ff_h264_direct_ref_list_init(h);
2028

    
2029
    if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
2030
        tmp = get_ue_golomb_31(&s->gb);
2031
        if(tmp > 2){
2032
            av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
2033
            return -1;
2034
        }
2035
        h->cabac_init_idc= tmp;
2036
    }
2037

    
2038
    h->last_qscale_diff = 0;
2039
    tmp = h->pps.init_qp + get_se_golomb(&s->gb);
2040
    if(tmp>51){
2041
        av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
2042
        return -1;
2043
    }
2044
    s->qscale= tmp;
2045
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2046
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2047
    //FIXME qscale / qp ... stuff
2048
    if(h->slice_type == FF_SP_TYPE){
2049
        get_bits1(&s->gb); /* sp_for_switch_flag */
2050
    }
2051
    if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
2052
        get_se_golomb(&s->gb); /* slice_qs_delta */
2053
    }
2054

    
2055
    h->deblocking_filter = 1;
2056
    h->slice_alpha_c0_offset = 52;
2057
    h->slice_beta_offset = 52;
2058
    if( h->pps.deblocking_filter_parameters_present ) {
2059
        tmp= get_ue_golomb_31(&s->gb);
2060
        if(tmp > 2){
2061
            av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
2062
            return -1;
2063
        }
2064
        h->deblocking_filter= tmp;
2065
        if(h->deblocking_filter < 2)
2066
            h->deblocking_filter^= 1; // 1<->0
2067

    
2068
        if( h->deblocking_filter ) {
2069
            h->slice_alpha_c0_offset += get_se_golomb(&s->gb) << 1;
2070
            h->slice_beta_offset     += get_se_golomb(&s->gb) << 1;
2071
            if(   h->slice_alpha_c0_offset > 104U
2072
               || h->slice_beta_offset     > 104U){
2073
                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);
2074
                return -1;
2075
            }
2076
        }
2077
    }
2078

    
2079
    if(   s->avctx->skip_loop_filter >= AVDISCARD_ALL
2080
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
2081
       ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR  && h->slice_type_nos == FF_B_TYPE)
2082
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2083
        h->deblocking_filter= 0;
2084

    
2085
    if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
2086
        if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
2087
            /* Cheat slightly for speed:
2088
               Do not bother to deblock across slices. */
2089
            h->deblocking_filter = 2;
2090
        } else {
2091
            h0->max_contexts = 1;
2092
            if(!h0->single_decode_warning) {
2093
                av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
2094
                h0->single_decode_warning = 1;
2095
            }
2096
            if(h != h0)
2097
                return 1; // deblocking switched inside frame
2098
        }
2099
    }
2100
    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]);
2101

    
2102
#if 0 //FMO
2103
    if( h->pps.num_slice_groups > 1  && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
2104
        slice_group_change_cycle= get_bits(&s->gb, ?);
2105
#endif
2106

    
2107
    h0->last_slice_type = slice_type;
2108
    h->slice_num = ++h0->current_slice;
2109
    if(h->slice_num >= MAX_SLICES){
2110
        av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
2111
    }
2112

    
2113
    for(j=0; j<2; j++){
2114
        int id_list[16];
2115
        int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
2116
        for(i=0; i<16; i++){
2117
            id_list[i]= 60;
2118
            if(h->ref_list[j][i].data[0]){
2119
                int k;
2120
                uint8_t *base= h->ref_list[j][i].base[0];
2121
                for(k=0; k<h->short_ref_count; k++)
2122
                    if(h->short_ref[k]->base[0] == base){
2123
                        id_list[i]= k;
2124
                        break;
2125
                    }
2126
                for(k=0; k<h->long_ref_count; k++)
2127
                    if(h->long_ref[k] && h->long_ref[k]->base[0] == base){
2128
                        id_list[i]= h->short_ref_count + k;
2129
                        break;
2130
                    }
2131
            }
2132
        }
2133

    
2134
        ref2frm[0]=
2135
        ref2frm[1]= -1;
2136
        for(i=0; i<16; i++)
2137
            ref2frm[i+2]= 4*id_list[i]
2138
                          +(h->ref_list[j][i].reference&3);
2139
        ref2frm[18+0]=
2140
        ref2frm[18+1]= -1;
2141
        for(i=16; i<48; i++)
2142
            ref2frm[i+4]= 4*id_list[(i-16)>>1]
2143
                          +(h->ref_list[j][i].reference&3);
2144
    }
2145

    
2146
    h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
2147
    h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
2148

    
2149
    s->avctx->refs= h->sps.ref_frame_count;
2150

    
2151
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
2152
        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",
2153
               h->slice_num,
2154
               (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
2155
               first_mb_in_slice,
2156
               av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
2157
               pps_id, h->frame_num,
2158
               s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
2159
               h->ref_count[0], h->ref_count[1],
2160
               s->qscale,
2161
               h->deblocking_filter, h->slice_alpha_c0_offset/2-26, h->slice_beta_offset/2-26,
2162
               h->use_weight,
2163
               h->use_weight==1 && h->use_weight_chroma ? "c" : "",
2164
               h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
2165
               );
2166
    }
2167

    
2168
    return 0;
2169
}
2170

    
2171
int ff_h264_get_slice_type(const H264Context *h)
2172
{
2173
    switch (h->slice_type) {
2174
    case FF_P_TYPE:  return 0;
2175
    case FF_B_TYPE:  return 1;
2176
    case FF_I_TYPE:  return 2;
2177
    case FF_SP_TYPE: return 3;
2178
    case FF_SI_TYPE: return 4;
2179
    default:         return -1;
2180
    }
2181
}
2182

    
2183
static void loop_filter(H264Context *h){
2184
    MpegEncContext * const s = &h->s;
2185
    uint8_t  *dest_y, *dest_cb, *dest_cr;
2186
    int linesize, uvlinesize, mb_x, mb_y;
2187
    const int end_mb_y= s->mb_y + FRAME_MBAFF;
2188
    const int old_slice_type= h->slice_type;
2189

    
2190
    if(h->deblocking_filter) {
2191
        for(mb_x= 0; mb_x<s->mb_width; mb_x++){
2192
            for(mb_y=end_mb_y - FRAME_MBAFF; mb_y<= end_mb_y; mb_y++){
2193
                int mb_xy, mb_type;
2194
                mb_xy = h->mb_xy = mb_x + mb_y*s->mb_stride;
2195
                h->slice_num= h->slice_table[mb_xy];
2196
                mb_type= s->current_picture.mb_type[mb_xy];
2197
                h->list_count= h->list_counts[mb_xy];
2198

    
2199
                if(FRAME_MBAFF)
2200
                    h->mb_mbaff = h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2201

    
2202
                s->mb_x= mb_x;
2203
                s->mb_y= mb_y;
2204
                dest_y  = s->current_picture.data[0] + (mb_x + mb_y * s->linesize  ) * 16;
2205
                dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
2206
                dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
2207
                    //FIXME simplify above
2208

    
2209
                if (MB_FIELD) {
2210
                    linesize   = h->mb_linesize   = s->linesize * 2;
2211
                    uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2212
                    if(mb_y&1){ //FIXME move out of this function?
2213
                        dest_y -= s->linesize*15;
2214
                        dest_cb-= s->uvlinesize*7;
2215
                        dest_cr-= s->uvlinesize*7;
2216
                    }
2217
                } else {
2218
                    linesize   = h->mb_linesize   = s->linesize;
2219
                    uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2220
                }
2221
                backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0);
2222
                if(fill_filter_caches(h, mb_type))
2223
                    continue;
2224
                h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2225
                h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2226

    
2227
                if (FRAME_MBAFF) {
2228
                    ff_h264_filter_mb     (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2229
                } else {
2230
                    ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2231
                }
2232
            }
2233
        }
2234
    }
2235
    h->slice_type= old_slice_type;
2236
    s->mb_x= 0;
2237
    s->mb_y= end_mb_y - FRAME_MBAFF;
2238
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2239
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2240
}
2241

    
2242
static void predict_field_decoding_flag(H264Context *h){
2243
    MpegEncContext * const s = &h->s;
2244
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2245
    int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
2246
                ? s->current_picture.mb_type[mb_xy-1]
2247
                : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
2248
                ? s->current_picture.mb_type[mb_xy-s->mb_stride]
2249
                : 0;
2250
    h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2251
}
2252

    
2253
static int decode_slice(struct AVCodecContext *avctx, void *arg){
2254
    H264Context *h = *(void**)arg;
2255
    MpegEncContext * const s = &h->s;
2256
    const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
2257

    
2258
    s->mb_skip_run= -1;
2259

    
2260
    h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
2261
                    (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
2262

    
2263
    if( h->pps.cabac ) {
2264
        /* realign */
2265
        align_get_bits( &s->gb );
2266

    
2267
        /* init cabac */
2268
        ff_init_cabac_states( &h->cabac);
2269
        ff_init_cabac_decoder( &h->cabac,
2270
                               s->gb.buffer + get_bits_count(&s->gb)/8,
2271
                               (get_bits_left(&s->gb) + 7)/8);
2272

    
2273
        ff_h264_init_cabac_states(h);
2274

    
2275
        for(;;){
2276
//START_TIMER
2277
            int ret = ff_h264_decode_mb_cabac(h);
2278
            int eos;
2279
//STOP_TIMER("decode_mb_cabac")
2280

    
2281
            if(ret>=0) ff_h264_hl_decode_mb(h);
2282

    
2283
            if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
2284
                s->mb_y++;
2285

    
2286
                ret = ff_h264_decode_mb_cabac(h);
2287

    
2288
                if(ret>=0) ff_h264_hl_decode_mb(h);
2289
                s->mb_y--;
2290
            }
2291
            eos = get_cabac_terminate( &h->cabac );
2292

    
2293
            if((s->workaround_bugs & FF_BUG_TRUNCATED) && h->cabac.bytestream > h->cabac.bytestream_end + 2){
2294
                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);
2295
                return 0;
2296
            }
2297
            if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
2298
                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);
2299
                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);
2300
                return -1;
2301
            }
2302

    
2303
            if( ++s->mb_x >= s->mb_width ) {
2304
                s->mb_x = 0;
2305
                loop_filter(h);
2306
                ff_draw_horiz_band(s, 16*s->mb_y, 16);
2307
                ++s->mb_y;
2308
                if(FIELD_OR_MBAFF_PICTURE) {
2309
                    ++s->mb_y;
2310
                    if(FRAME_MBAFF && s->mb_y < s->mb_height)
2311
                        predict_field_decoding_flag(h);
2312
                }
2313
            }
2314

    
2315
            if( eos || s->mb_y >= s->mb_height ) {
2316
                tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2317
                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);
2318
                return 0;
2319
            }
2320
        }
2321

    
2322
    } else {
2323
        for(;;){
2324
            int ret = ff_h264_decode_mb_cavlc(h);
2325

    
2326
            if(ret>=0) ff_h264_hl_decode_mb(h);
2327

    
2328
            if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
2329
                s->mb_y++;
2330
                ret = ff_h264_decode_mb_cavlc(h);
2331

    
2332
                if(ret>=0) ff_h264_hl_decode_mb(h);
2333
                s->mb_y--;
2334
            }
2335

    
2336
            if(ret<0){
2337
                av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2338
                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);
2339

    
2340
                return -1;
2341
            }
2342

    
2343
            if(++s->mb_x >= s->mb_width){
2344
                s->mb_x=0;
2345
                loop_filter(h);
2346
                ff_draw_horiz_band(s, 16*s->mb_y, 16);
2347
                ++s->mb_y;
2348
                if(FIELD_OR_MBAFF_PICTURE) {
2349
                    ++s->mb_y;
2350
                    if(FRAME_MBAFF && s->mb_y < s->mb_height)
2351
                        predict_field_decoding_flag(h);
2352
                }
2353
                if(s->mb_y >= s->mb_height){
2354
                    tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2355

    
2356
                    if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
2357
                        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);
2358

    
2359
                        return 0;
2360
                    }else{
2361
                        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);
2362

    
2363
                        return -1;
2364
                    }
2365
                }
2366
            }
2367

    
2368
            if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
2369
                tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2370
                if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
2371
                    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);
2372

    
2373
                    return 0;
2374
                }else{
2375
                    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);
2376

    
2377
                    return -1;
2378
                }
2379
            }
2380
        }
2381
    }
2382

    
2383
#if 0
2384
    for(;s->mb_y < s->mb_height; s->mb_y++){
2385
        for(;s->mb_x < s->mb_width; s->mb_x++){
2386
            int ret= decode_mb(h);
2387

2388
            ff_h264_hl_decode_mb(h);
2389

2390
            if(ret<0){
2391
                av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2392
                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);
2393

2394
                return -1;
2395
            }
2396

2397
            if(++s->mb_x >= s->mb_width){
2398
                s->mb_x=0;
2399
                if(++s->mb_y >= s->mb_height){
2400
                    if(get_bits_count(s->gb) == s->gb.size_in_bits){
2401
                        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);
2402

2403
                        return 0;
2404
                    }else{
2405
                        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);
2406

2407
                        return -1;
2408
                    }
2409
                }
2410
            }
2411

2412
            if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
2413
                if(get_bits_count(s->gb) == s->gb.size_in_bits){
2414
                    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);
2415

2416
                    return 0;
2417
                }else{
2418
                    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);
2419

2420
                    return -1;
2421
                }
2422
            }
2423
        }
2424
        s->mb_x=0;
2425
        ff_draw_horiz_band(s, 16*s->mb_y, 16);
2426
    }
2427
#endif
2428
    return -1; //not reached
2429
}
2430

    
2431
/**
2432
 * Call decode_slice() for each context.
2433
 *
2434
 * @param h h264 master context
2435
 * @param context_count number of contexts to execute
2436
 */
2437
static void execute_decode_slices(H264Context *h, int context_count){
2438
    MpegEncContext * const s = &h->s;
2439
    AVCodecContext * const avctx= s->avctx;
2440
    H264Context *hx;
2441
    int i;
2442

    
2443
    if (s->avctx->hwaccel)
2444
        return;
2445
    if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2446
        return;
2447
    if(context_count == 1) {
2448
        decode_slice(avctx, &h);
2449
    } else {
2450
        for(i = 1; i < context_count; i++) {
2451
            hx = h->thread_context[i];
2452
            hx->s.error_recognition = avctx->error_recognition;
2453
            hx->s.error_count = 0;
2454
        }
2455

    
2456
        avctx->execute(avctx, (void *)decode_slice,
2457
                       h->thread_context, NULL, context_count, sizeof(void*));
2458

    
2459
        /* pull back stuff from slices to master context */
2460
        hx = h->thread_context[context_count - 1];
2461
        s->mb_x = hx->s.mb_x;
2462
        s->mb_y = hx->s.mb_y;
2463
        s->dropable = hx->s.dropable;
2464
        s->picture_structure = hx->s.picture_structure;
2465
        for(i = 1; i < context_count; i++)
2466
            h->s.error_count += h->thread_context[i]->s.error_count;
2467
    }
2468
}
2469

    
2470

    
2471
static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
2472
    MpegEncContext * const s = &h->s;
2473
    AVCodecContext * const avctx= s->avctx;
2474
    int buf_index=0;
2475
    H264Context *hx; ///< thread context
2476
    int context_count = 0;
2477
    int next_avc= h->is_avc ? 0 : buf_size;
2478

    
2479
    h->max_contexts = avctx->thread_count;
2480
#if 0
2481
    int i;
2482
    for(i=0; i<50; i++){
2483
        av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]);
2484
    }
2485
#endif
2486
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
2487
        h->current_slice = 0;
2488
        if (!s->first_field)
2489
            s->current_picture_ptr= NULL;
2490
        ff_h264_reset_sei(h);
2491
    }
2492

    
2493
    for(;;){
2494
        int consumed;
2495
        int dst_length;
2496
        int bit_length;
2497
        const uint8_t *ptr;
2498
        int i, nalsize = 0;
2499
        int err;
2500

    
2501
        if(buf_index >= next_avc) {
2502
            if(buf_index >= buf_size) break;
2503
            nalsize = 0;
2504
            for(i = 0; i < h->nal_length_size; i++)
2505
                nalsize = (nalsize << 8) | buf[buf_index++];
2506
            if(nalsize <= 1 || nalsize > buf_size - buf_index){
2507
                if(nalsize == 1){
2508
                    buf_index++;
2509
                    continue;
2510
                }else{
2511
                    av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
2512
                    break;
2513
                }
2514
            }
2515
            next_avc= buf_index + nalsize;
2516
        } else {
2517
            // start code prefix search
2518
            for(; buf_index + 3 < next_avc; buf_index++){
2519
                // This should always succeed in the first iteration.
2520
                if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
2521
                    break;
2522
            }
2523

    
2524
            if(buf_index+3 >= buf_size) break;
2525

    
2526
            buf_index+=3;
2527
            if(buf_index >= next_avc) continue;
2528
        }
2529

    
2530
        hx = h->thread_context[context_count];
2531

    
2532
        ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, next_avc - buf_index);
2533
        if (ptr==NULL || dst_length < 0){
2534
            return -1;
2535
        }
2536
        i= buf_index + consumed;
2537
        if((s->workaround_bugs & FF_BUG_AUTODETECT) && i+3<next_avc &&
2538
           buf[i]==0x00 && buf[i+1]==0x00 && buf[i+2]==0x01 && buf[i+3]==0xE0)
2539
            s->workaround_bugs |= FF_BUG_TRUNCATED;
2540

    
2541
        if(!(s->workaround_bugs & FF_BUG_TRUNCATED)){
2542
        while(ptr[dst_length - 1] == 0 && dst_length > 0)
2543
            dst_length--;
2544
        }
2545
        bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
2546

    
2547
        if(s->avctx->debug&FF_DEBUG_STARTCODE){
2548
            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);
2549
        }
2550

    
2551
        if (h->is_avc && (nalsize != consumed) && nalsize){
2552
            av_log(h->s.avctx, AV_LOG_DEBUG, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize);
2553
        }
2554

    
2555
        buf_index += consumed;
2556

    
2557
        if(  (s->hurry_up == 1 && h->nal_ref_idc  == 0) //FIXME do not discard SEI id
2558
           ||(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc  == 0))
2559
            continue;
2560

    
2561
      again:
2562
        err = 0;
2563
        switch(hx->nal_unit_type){
2564
        case NAL_IDR_SLICE:
2565
            if (h->nal_unit_type != NAL_IDR_SLICE) {
2566
                av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
2567
                return -1;
2568
            }
2569
            idr(h); //FIXME ensure we don't loose some frames if there is reordering
2570
        case NAL_SLICE:
2571
            init_get_bits(&hx->s.gb, ptr, bit_length);
2572
            hx->intra_gb_ptr=
2573
            hx->inter_gb_ptr= &hx->s.gb;
2574
            hx->s.data_partitioning = 0;
2575

    
2576
            if((err = decode_slice_header(hx, h)))
2577
               break;
2578

    
2579
            avctx->profile = hx->sps.profile_idc;
2580
            avctx->level   = hx->sps.level_idc;
2581

    
2582
            if (s->avctx->hwaccel && h->current_slice == 1) {
2583
                if (s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
2584
                    return -1;
2585
            }
2586

    
2587
            s->current_picture_ptr->key_frame |=
2588
                    (hx->nal_unit_type == NAL_IDR_SLICE) ||
2589
                    (h->sei_recovery_frame_cnt >= 0);
2590
            if(hx->redundant_pic_count==0 && hx->s.hurry_up < 5
2591
               && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2592
               && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
2593
               && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2594
               && avctx->skip_frame < AVDISCARD_ALL){
2595
                if(avctx->hwaccel) {
2596
                    if (avctx->hwaccel->decode_slice(avctx, &buf[buf_index - consumed], consumed) < 0)
2597
                        return -1;
2598
                }else
2599
                if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
2600
                    static const uint8_t start_code[] = {0x00, 0x00, 0x01};
2601
                    ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code));
2602
                    ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed );
2603
                }else
2604
                    context_count++;
2605
            }
2606
            break;
2607
        case NAL_DPA:
2608
            init_get_bits(&hx->s.gb, ptr, bit_length);
2609
            hx->intra_gb_ptr=
2610
            hx->inter_gb_ptr= NULL;
2611

    
2612
            if ((err = decode_slice_header(hx, h)) < 0)
2613
                break;
2614

    
2615
            avctx->profile = hx->sps.profile_idc;
2616
            avctx->level   = hx->sps.level_idc;
2617

    
2618
            hx->s.data_partitioning = 1;
2619

    
2620
            break;
2621
        case NAL_DPB:
2622
            init_get_bits(&hx->intra_gb, ptr, bit_length);
2623
            hx->intra_gb_ptr= &hx->intra_gb;
2624
            break;
2625
        case NAL_DPC:
2626
            init_get_bits(&hx->inter_gb, ptr, bit_length);
2627
            hx->inter_gb_ptr= &hx->inter_gb;
2628

    
2629
            if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
2630
               && s->context_initialized
2631
               && s->hurry_up < 5
2632
               && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2633
               && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
2634
               && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2635
               && avctx->skip_frame < AVDISCARD_ALL)
2636
                context_count++;
2637
            break;
2638
        case NAL_SEI:
2639
            init_get_bits(&s->gb, ptr, bit_length);
2640
            ff_h264_decode_sei(h);
2641
            break;
2642
        case NAL_SPS:
2643
            init_get_bits(&s->gb, ptr, bit_length);
2644
            ff_h264_decode_seq_parameter_set(h);
2645

    
2646
            if(s->flags& CODEC_FLAG_LOW_DELAY)
2647
                s->low_delay=1;
2648

    
2649
            if(avctx->has_b_frames < 2)
2650
                avctx->has_b_frames= !s->low_delay;
2651
            break;
2652
        case NAL_PPS:
2653
            init_get_bits(&s->gb, ptr, bit_length);
2654

    
2655
            ff_h264_decode_picture_parameter_set(h, bit_length);
2656

    
2657
            break;
2658
        case NAL_AUD:
2659
        case NAL_END_SEQUENCE:
2660
        case NAL_END_STREAM:
2661
        case NAL_FILLER_DATA:
2662
        case NAL_SPS_EXT:
2663
        case NAL_AUXILIARY_SLICE:
2664
            break;
2665
        default:
2666
            av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", hx->nal_unit_type, bit_length);
2667
        }
2668

    
2669
        if(context_count == h->max_contexts) {
2670
            execute_decode_slices(h, context_count);
2671
            context_count = 0;
2672
        }
2673

    
2674
        if (err < 0)
2675
            av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
2676
        else if(err == 1) {
2677
            /* Slice could not be decoded in parallel mode, copy down
2678
             * NAL unit stuff to context 0 and restart. Note that
2679
             * rbsp_buffer is not transferred, but since we no longer
2680
             * run in parallel mode this should not be an issue. */
2681
            h->nal_unit_type = hx->nal_unit_type;
2682
            h->nal_ref_idc   = hx->nal_ref_idc;
2683
            hx = h;
2684
            goto again;
2685
        }
2686
    }
2687
    if(context_count)
2688
        execute_decode_slices(h, context_count);
2689
    return buf_index;
2690
}
2691

    
2692
/**
2693
 * returns the number of bytes consumed for building the current frame
2694
 */
2695
static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
2696
        if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
2697
        if(pos+10>buf_size) pos=buf_size; // oops ;)
2698

    
2699
        return pos;
2700
}
2701

    
2702
static int decode_frame(AVCodecContext *avctx,
2703
                             void *data, int *data_size,
2704
                             AVPacket *avpkt)
2705
{
2706
    const uint8_t *buf = avpkt->data;
2707
    int buf_size = avpkt->size;
2708
    H264Context *h = avctx->priv_data;
2709
    MpegEncContext *s = &h->s;
2710
    AVFrame *pict = data;
2711
    int buf_index;
2712

    
2713
    s->flags= avctx->flags;
2714
    s->flags2= avctx->flags2;
2715

    
2716
   /* end of stream, output what is still in the buffers */
2717
    if (buf_size == 0) {
2718
        Picture *out;
2719
        int i, out_idx;
2720

    
2721
//FIXME factorize this with the output code below
2722
        out = h->delayed_pic[0];
2723
        out_idx = 0;
2724
        for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2725
            if(h->delayed_pic[i]->poc < out->poc){
2726
                out = h->delayed_pic[i];
2727
                out_idx = i;
2728
            }
2729

    
2730
        for(i=out_idx; h->delayed_pic[i]; i++)
2731
            h->delayed_pic[i] = h->delayed_pic[i+1];
2732

    
2733
        if(out){
2734
            *data_size = sizeof(AVFrame);
2735
            *pict= *(AVFrame*)out;
2736
        }
2737

    
2738
        return 0;
2739
    }
2740

    
2741
    buf_index=decode_nal_units(h, buf, buf_size);
2742
    if(buf_index < 0)
2743
        return -1;
2744

    
2745
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
2746
        if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0;
2747
        av_log(avctx, AV_LOG_ERROR, "no frame!\n");
2748
        return -1;
2749
    }
2750

    
2751
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){
2752
        Picture *out = s->current_picture_ptr;
2753
        Picture *cur = s->current_picture_ptr;
2754
        int i, pics, out_of_order, out_idx;
2755

    
2756
        field_end(h);
2757

    
2758
        if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) {
2759
            /* Wait for second field. */
2760
            *data_size = 0;
2761

    
2762
        } else {
2763
            cur->interlaced_frame = 0;
2764
            cur->repeat_pict = 0;
2765

    
2766
            /* Signal interlacing information externally. */
2767
            /* Prioritize picture timing SEI information over used decoding process if it exists. */
2768

    
2769
            if(h->sps.pic_struct_present_flag){
2770
                switch (h->sei_pic_struct)
2771
                {
2772
                case SEI_PIC_STRUCT_FRAME:
2773
                    break;
2774
                case SEI_PIC_STRUCT_TOP_FIELD:
2775
                case SEI_PIC_STRUCT_BOTTOM_FIELD:
2776
                    cur->interlaced_frame = 1;
2777
                    break;
2778
                case SEI_PIC_STRUCT_TOP_BOTTOM:
2779
                case SEI_PIC_STRUCT_BOTTOM_TOP:
2780
                    if (FIELD_OR_MBAFF_PICTURE)
2781
                        cur->interlaced_frame = 1;
2782
                    else
2783
                        // try to flag soft telecine progressive
2784
                        cur->interlaced_frame = h->prev_interlaced_frame;
2785
                    break;
2786
                case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
2787
                case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
2788
                    // Signal the possibility of telecined film externally (pic_struct 5,6)
2789
                    // From these hints, let the applications decide if they apply deinterlacing.
2790
                    cur->repeat_pict = 1;
2791
                    break;
2792
                case SEI_PIC_STRUCT_FRAME_DOUBLING:
2793
                    // Force progressive here, as doubling interlaced frame is a bad idea.
2794
                    cur->repeat_pict = 2;
2795
                    break;
2796
                case SEI_PIC_STRUCT_FRAME_TRIPLING:
2797
                    cur->repeat_pict = 4;
2798
                    break;
2799
                }
2800

    
2801
                if ((h->sei_ct_type & 3) && h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
2802
                    cur->interlaced_frame = (h->sei_ct_type & (1<<1)) != 0;
2803
            }else{
2804
                /* Derive interlacing flag from used decoding process. */
2805
                cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE;
2806
            }
2807
            h->prev_interlaced_frame = cur->interlaced_frame;
2808

    
2809
            if (cur->field_poc[0] != cur->field_poc[1]){
2810
                /* Derive top_field_first from field pocs. */
2811
                cur->top_field_first = cur->field_poc[0] < cur->field_poc[1];
2812
            }else{
2813
                if(cur->interlaced_frame || h->sps.pic_struct_present_flag){
2814
                    /* Use picture timing SEI information. Even if it is a information of a past frame, better than nothing. */
2815
                    if(h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM
2816
                      || h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
2817
                        cur->top_field_first = 1;
2818
                    else
2819
                        cur->top_field_first = 0;
2820
                }else{
2821
                    /* Most likely progressive */
2822
                    cur->top_field_first = 0;
2823
                }
2824
            }
2825

    
2826
        //FIXME do something with unavailable reference frames
2827

    
2828
            /* Sort B-frames into display order */
2829

    
2830
            if(h->sps.bitstream_restriction_flag
2831
               && s->avctx->has_b_frames < h->sps.num_reorder_frames){
2832
                s->avctx->has_b_frames = h->sps.num_reorder_frames;
2833
                s->low_delay = 0;
2834
            }
2835

    
2836
            if(   s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT
2837
               && !h->sps.bitstream_restriction_flag){
2838
                s->avctx->has_b_frames= MAX_DELAYED_PIC_COUNT;
2839
                s->low_delay= 0;
2840
            }
2841

    
2842
            pics = 0;
2843
            while(h->delayed_pic[pics]) pics++;
2844

    
2845
            assert(pics <= MAX_DELAYED_PIC_COUNT);
2846

    
2847
            h->delayed_pic[pics++] = cur;
2848
            if(cur->reference == 0)
2849
                cur->reference = DELAYED_PIC_REF;
2850

    
2851
            out = h->delayed_pic[0];
2852
            out_idx = 0;
2853
            for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2854
                if(h->delayed_pic[i]->poc < out->poc){
2855
                    out = h->delayed_pic[i];
2856
                    out_idx = i;
2857
                }
2858
            if(s->avctx->has_b_frames == 0 && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset))
2859
                h->outputed_poc= INT_MIN;
2860
            out_of_order = out->poc < h->outputed_poc;
2861

    
2862
            if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames)
2863
                { }
2864
            else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT)
2865
               || (s->low_delay &&
2866
                ((h->outputed_poc != INT_MIN && out->poc > h->outputed_poc + 2)
2867
                 || cur->pict_type == FF_B_TYPE)))
2868
            {
2869
                s->low_delay = 0;
2870
                s->avctx->has_b_frames++;
2871
            }
2872

    
2873
            if(out_of_order || pics > s->avctx->has_b_frames){
2874
                out->reference &= ~DELAYED_PIC_REF;
2875
                for(i=out_idx; h->delayed_pic[i]; i++)
2876
                    h->delayed_pic[i] = h->delayed_pic[i+1];
2877
            }
2878
            if(!out_of_order && pics > s->avctx->has_b_frames){
2879
                *data_size = sizeof(AVFrame);
2880

    
2881
                if(out_idx==0 && h->delayed_pic[0] && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) {
2882
                    h->outputed_poc = INT_MIN;
2883
                } else
2884
                    h->outputed_poc = out->poc;
2885
                *pict= *(AVFrame*)out;
2886
            }else{
2887
                av_log(avctx, AV_LOG_DEBUG, "no picture\n");
2888
            }
2889
        }
2890
    }
2891

    
2892
    assert(pict->data[0] || !*data_size);
2893
    ff_print_debug_info(s, pict);
2894
//printf("out %d\n", (int)pict->data[0]);
2895

    
2896
    return get_consumed_bytes(s, buf_index, buf_size);
2897
}
2898
#if 0
2899
static inline void fill_mb_avail(H264Context *h){
2900
    MpegEncContext * const s = &h->s;
2901
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2902

2903
    if(s->mb_y){
2904
        h->mb_avail[0]= s->mb_x                 && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num;
2905
        h->mb_avail[1]=                            h->slice_table[mb_xy - s->mb_stride    ] == h->slice_num;
2906
        h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num;
2907
    }else{
2908
        h->mb_avail[0]=
2909
        h->mb_avail[1]=
2910
        h->mb_avail[2]= 0;
2911
    }
2912
    h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num;
2913
    h->mb_avail[4]= 1; //FIXME move out
2914
    h->mb_avail[5]= 0; //FIXME move out
2915
}
2916
#endif
2917

    
2918
#ifdef TEST
2919
#undef printf
2920
#undef random
2921
#define COUNT 8000
2922
#define SIZE (COUNT*40)
2923
int main(void){
2924
    int i;
2925
    uint8_t temp[SIZE];
2926
    PutBitContext pb;
2927
    GetBitContext gb;
2928
//    int int_temp[10000];
2929
    DSPContext dsp;
2930
    AVCodecContext avctx;
2931

    
2932
    dsputil_init(&dsp, &avctx);
2933

    
2934
    init_put_bits(&pb, temp, SIZE);
2935
    printf("testing unsigned exp golomb\n");
2936
    for(i=0; i<COUNT; i++){
2937
        START_TIMER
2938
        set_ue_golomb(&pb, i);
2939
        STOP_TIMER("set_ue_golomb");
2940
    }
2941
    flush_put_bits(&pb);
2942

    
2943
    init_get_bits(&gb, temp, 8*SIZE);
2944
    for(i=0; i<COUNT; i++){
2945
        int j, s;
2946

    
2947
        s= show_bits(&gb, 24);
2948

    
2949
        START_TIMER
2950
        j= get_ue_golomb(&gb);
2951
        if(j != i){
2952
            printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
2953
//            return -1;
2954
        }
2955
        STOP_TIMER("get_ue_golomb");
2956
    }
2957

    
2958

    
2959
    init_put_bits(&pb, temp, SIZE);
2960
    printf("testing signed exp golomb\n");
2961
    for(i=0; i<COUNT; i++){
2962
        START_TIMER
2963
        set_se_golomb(&pb, i - COUNT/2);
2964
        STOP_TIMER("set_se_golomb");
2965
    }
2966
    flush_put_bits(&pb);
2967

    
2968
    init_get_bits(&gb, temp, 8*SIZE);
2969
    for(i=0; i<COUNT; i++){
2970
        int j, s;
2971

    
2972
        s= show_bits(&gb, 24);
2973

    
2974
        START_TIMER
2975
        j= get_se_golomb(&gb);
2976
        if(j != i - COUNT/2){
2977
            printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
2978
//            return -1;
2979
        }
2980
        STOP_TIMER("get_se_golomb");
2981
    }
2982

    
2983
#if 0
2984
    printf("testing 4x4 (I)DCT\n");
2985

2986
    DCTELEM block[16];
2987
    uint8_t src[16], ref[16];
2988
    uint64_t error= 0, max_error=0;
2989

2990
    for(i=0; i<COUNT; i++){
2991
        int j;
2992
//        printf("%d %d %d\n", r1, r2, (r2-r1)*16);
2993
        for(j=0; j<16; j++){
2994
            ref[j]= random()%255;
2995
            src[j]= random()%255;
2996
        }
2997

2998
        h264_diff_dct_c(block, src, ref, 4);
2999

3000
        //normalize
3001
        for(j=0; j<16; j++){
3002
//            printf("%d ", block[j]);
3003
            block[j]= block[j]*4;
3004
            if(j&1) block[j]= (block[j]*4 + 2)/5;
3005
            if(j&4) block[j]= (block[j]*4 + 2)/5;
3006
        }
3007
//        printf("\n");
3008

3009
        s->dsp.h264_idct_add(ref, block, 4);
3010
/*        for(j=0; j<16; j++){
3011
            printf("%d ", ref[j]);
3012
        }
3013
        printf("\n");*/
3014

3015
        for(j=0; j<16; j++){
3016
            int diff= FFABS(src[j] - ref[j]);
3017

3018
            error+= diff*diff;
3019
            max_error= FFMAX(max_error, diff);
3020
        }
3021
    }
3022
    printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
3023
    printf("testing quantizer\n");
3024
    for(qp=0; qp<52; qp++){
3025
        for(i=0; i<16; i++)
3026
            src1_block[i]= src2_block[i]= random()%255;
3027

3028
    }
3029
    printf("Testing NAL layer\n");
3030

3031
    uint8_t bitstream[COUNT];
3032
    uint8_t nal[COUNT*2];
3033
    H264Context h;
3034
    memset(&h, 0, sizeof(H264Context));
3035

3036
    for(i=0; i<COUNT; i++){
3037
        int zeros= i;
3038
        int nal_length;
3039
        int consumed;
3040
        int out_length;
3041
        uint8_t *out;
3042
        int j;
3043

3044
        for(j=0; j<COUNT; j++){
3045
            bitstream[j]= (random() % 255) + 1;
3046
        }
3047

3048
        for(j=0; j<zeros; j++){
3049
            int pos= random() % COUNT;
3050
            while(bitstream[pos] == 0){
3051
                pos++;
3052
                pos %= COUNT;
3053
            }
3054
            bitstream[pos]=0;
3055
        }
3056

3057
        START_TIMER
3058

3059
        nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
3060
        if(nal_length<0){
3061
            printf("encoding failed\n");
3062
            return -1;
3063
        }
3064

3065
        out= ff_h264_decode_nal(&h, nal, &out_length, &consumed, nal_length);
3066

3067
        STOP_TIMER("NAL")
3068

3069
        if(out_length != COUNT){
3070
            printf("incorrect length %d %d\n", out_length, COUNT);
3071
            return -1;
3072
        }
3073

3074
        if(consumed != nal_length){
3075
            printf("incorrect consumed length %d %d\n", nal_length, consumed);
3076
            return -1;
3077
        }
3078

3079
        if(memcmp(bitstream, out, COUNT)){
3080
            printf("mismatch\n");
3081
            return -1;
3082
        }
3083
    }
3084
#endif
3085

    
3086
    printf("Testing RBSP\n");
3087

    
3088

    
3089
    return 0;
3090
}
3091
#endif /* TEST */
3092

    
3093

    
3094
av_cold void ff_h264_free_context(H264Context *h)
3095
{
3096
    int i;
3097

    
3098
    free_tables(h); //FIXME cleanup init stuff perhaps
3099

    
3100
    for(i = 0; i < MAX_SPS_COUNT; i++)
3101
        av_freep(h->sps_buffers + i);
3102

    
3103
    for(i = 0; i < MAX_PPS_COUNT; i++)
3104
        av_freep(h->pps_buffers + i);
3105
}
3106

    
3107
av_cold int ff_h264_decode_end(AVCodecContext *avctx)
3108
{
3109
    H264Context *h = avctx->priv_data;
3110
    MpegEncContext *s = &h->s;
3111

    
3112
    ff_h264_free_context(h);
3113

    
3114
    MPV_common_end(s);
3115

    
3116
//    memset(h, 0, sizeof(H264Context));
3117

    
3118
    return 0;
3119
}
3120

    
3121

    
3122
AVCodec h264_decoder = {
3123
    "h264",
3124
    CODEC_TYPE_VIDEO,
3125
    CODEC_ID_H264,
3126
    sizeof(H264Context),
3127
    ff_h264_decode_init,
3128
    NULL,
3129
    ff_h264_decode_end,
3130
    decode_frame,
3131
    /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_DELAY,
3132
    .flush= flush_dpb,
3133
    .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
3134
    .pix_fmts= ff_hwaccel_pixfmt_list_420,
3135
};
3136

    
3137
#if CONFIG_H264_VDPAU_DECODER
3138
AVCodec h264_vdpau_decoder = {
3139
    "h264_vdpau",
3140
    CODEC_TYPE_VIDEO,
3141
    CODEC_ID_H264,
3142
    sizeof(H264Context),
3143
    ff_h264_decode_init,
3144
    NULL,
3145
    ff_h264_decode_end,
3146
    decode_frame,
3147
    CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
3148
    .flush= flush_dpb,
3149
    .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
3150
    .pix_fmts = (const enum PixelFormat[]){PIX_FMT_VDPAU_H264, PIX_FMT_NONE},
3151
};
3152
#endif