Rearchitecturing the stiched up goose part 1
[ffmpeg.git] / libavcodec / h264.c
1 /*
2  * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 /**
23  * @file 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 #if ARCH_X86
43 #include "x86/h264_i386.h"
44 #endif
45
46 //#undef NDEBUG
47 #include <assert.h>
48
49 static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp);
50 static void svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp, int dc);
51
52 static const uint8_t rem6[52]={
53 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,
54 };
55
56 static const uint8_t div6[52]={
57 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,
58 };
59
60 void ff_h264_write_back_intra_pred_mode(H264Context *h){
61     const int mb_xy= h->mb_xy;
62
63     h->intra4x4_pred_mode[mb_xy][0]= h->intra4x4_pred_mode_cache[7+8*1];
64     h->intra4x4_pred_mode[mb_xy][1]= h->intra4x4_pred_mode_cache[7+8*2];
65     h->intra4x4_pred_mode[mb_xy][2]= h->intra4x4_pred_mode_cache[7+8*3];
66     h->intra4x4_pred_mode[mb_xy][3]= h->intra4x4_pred_mode_cache[7+8*4];
67     h->intra4x4_pred_mode[mb_xy][4]= h->intra4x4_pred_mode_cache[4+8*4];
68     h->intra4x4_pred_mode[mb_xy][5]= h->intra4x4_pred_mode_cache[5+8*4];
69     h->intra4x4_pred_mode[mb_xy][6]= h->intra4x4_pred_mode_cache[6+8*4];
70 }
71
72 /**
73  * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
74  */
75 int ff_h264_check_intra4x4_pred_mode(H264Context *h){
76     MpegEncContext * const s = &h->s;
77     static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
78     static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
79     int i;
80
81     if(!(h->top_samples_available&0x8000)){
82         for(i=0; i<4; i++){
83             int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
84             if(status<0){
85                 av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
86                 return -1;
87             } else if(status){
88                 h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
89             }
90         }
91     }
92
93     if((h->left_samples_available&0x8888)!=0x8888){
94         static const int mask[4]={0x8000,0x2000,0x80,0x20};
95         for(i=0; i<4; i++){
96             if(!(h->left_samples_available&mask[i])){
97                 int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
98                 if(status<0){
99                     av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
100                     return -1;
101                 } else if(status){
102                     h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
103                 }
104             }
105         }
106     }
107
108     return 0;
109 } //FIXME cleanup like ff_h264_check_intra_pred_mode
110
111 /**
112  * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
113  */
114 int ff_h264_check_intra_pred_mode(H264Context *h, int mode){
115     MpegEncContext * const s = &h->s;
116     static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
117     static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
118
119     if(mode > 6U) {
120         av_log(h->s.avctx, AV_LOG_ERROR, "out of range intra chroma pred mode at %d %d\n", s->mb_x, s->mb_y);
121         return -1;
122     }
123
124     if(!(h->top_samples_available&0x8000)){
125         mode= top[ mode ];
126         if(mode<0){
127             av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
128             return -1;
129         }
130     }
131
132     if((h->left_samples_available&0x8080) != 0x8080){
133         mode= left[ mode ];
134         if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
135             mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
136         }
137         if(mode<0){
138             av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
139             return -1;
140         }
141     }
142
143     return mode;
144 }
145
146 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
147     int i, si, di;
148     uint8_t *dst;
149     int bufidx;
150
151 //    src[0]&0x80;                //forbidden bit
152     h->nal_ref_idc= src[0]>>5;
153     h->nal_unit_type= src[0]&0x1F;
154
155     src++; length--;
156 #if 0
157     for(i=0; i<length; i++)
158         printf("%2X ", src[i]);
159 #endif
160
161 #if HAVE_FAST_UNALIGNED
162 # if HAVE_FAST_64BIT
163 #   define RS 7
164     for(i=0; i+1<length; i+=9){
165         if(!((~*(const uint64_t*)(src+i) & (*(const uint64_t*)(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
166 # else
167 #   define RS 3
168     for(i=0; i+1<length; i+=5){
169         if(!((~*(const uint32_t*)(src+i) & (*(const uint32_t*)(src+i) - 0x01000101U)) & 0x80008080U))
170 # endif
171             continue;
172         if(i>0 && !src[i]) i--;
173         while(src[i]) i++;
174 #else
175 #   define RS 0
176     for(i=0; i+1<length; i+=2){
177         if(src[i]) continue;
178         if(i>0 && src[i-1]==0) i--;
179 #endif
180         if(i+2<length && src[i+1]==0 && src[i+2]<=3){
181             if(src[i+2]!=3){
182                 /* startcode, so we must be past the end */
183                 length=i;
184             }
185             break;
186         }
187         i-= RS;
188     }
189
190     if(i>=length-1){ //no escaped 0
191         *dst_length= length;
192         *consumed= length+1; //+1 for the header
193         return src;
194     }
195
196     bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
197     av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
198     dst= h->rbsp_buffer[bufidx];
199
200     if (dst == NULL){
201         return NULL;
202     }
203
204 //printf("decoding esc\n");
205     memcpy(dst, src, i);
206     si=di=i;
207     while(si+2<length){
208         //remove escapes (very rare 1:2^22)
209         if(src[si+2]>3){
210             dst[di++]= src[si++];
211             dst[di++]= src[si++];
212         }else if(src[si]==0 && src[si+1]==0){
213             if(src[si+2]==3){ //escape
214                 dst[di++]= 0;
215                 dst[di++]= 0;
216                 si+=3;
217                 continue;
218             }else //next start code
219                 goto nsc;
220         }
221
222         dst[di++]= src[si++];
223     }
224     while(si<length)
225         dst[di++]= src[si++];
226 nsc:
227
228     memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
229
230     *dst_length= di;
231     *consumed= si + 1;//+1 for the header
232 //FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
233     return dst;
234 }
235
236 int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
237     int v= *src;
238     int r;
239
240     tprintf(h->s.avctx, "rbsp trailing %X\n", v);
241
242     for(r=1; r<9; r++){
243         if(v&1) return r;
244         v>>=1;
245     }
246     return 0;
247 }
248
249 /**
250  * IDCT transforms the 16 dc values and dequantizes them.
251  * @param qp quantization parameter
252  */
253 static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
254 #define stride 16
255     int i;
256     int temp[16]; //FIXME check if this is a good idea
257     static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
258     static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
259
260 //memset(block, 64, 2*256);
261 //return;
262     for(i=0; i<4; i++){
263         const int offset= y_offset[i];
264         const int z0= block[offset+stride*0] + block[offset+stride*4];
265         const int z1= block[offset+stride*0] - block[offset+stride*4];
266         const int z2= block[offset+stride*1] - block[offset+stride*5];
267         const int z3= block[offset+stride*1] + block[offset+stride*5];
268
269         temp[4*i+0]= z0+z3;
270         temp[4*i+1]= z1+z2;
271         temp[4*i+2]= z1-z2;
272         temp[4*i+3]= z0-z3;
273     }
274
275     for(i=0; i<4; i++){
276         const int offset= x_offset[i];
277         const int z0= temp[4*0+i] + temp[4*2+i];
278         const int z1= temp[4*0+i] - temp[4*2+i];
279         const int z2= temp[4*1+i] - temp[4*3+i];
280         const int z3= temp[4*1+i] + temp[4*3+i];
281
282         block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual
283         block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
284         block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
285         block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
286     }
287 }
288
289 #if 0
290 /**
291  * DCT transforms the 16 dc values.
292  * @param qp quantization parameter ??? FIXME
293  */
294 static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
295 //    const int qmul= dequant_coeff[qp][0];
296     int i;
297     int temp[16]; //FIXME check if this is a good idea
298     static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
299     static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
300
301     for(i=0; i<4; i++){
302         const int offset= y_offset[i];
303         const int z0= block[offset+stride*0] + block[offset+stride*4];
304         const int z1= block[offset+stride*0] - block[offset+stride*4];
305         const int z2= block[offset+stride*1] - block[offset+stride*5];
306         const int z3= block[offset+stride*1] + block[offset+stride*5];
307
308         temp[4*i+0]= z0+z3;
309         temp[4*i+1]= z1+z2;
310         temp[4*i+2]= z1-z2;
311         temp[4*i+3]= z0-z3;
312     }
313
314     for(i=0; i<4; i++){
315         const int offset= x_offset[i];
316         const int z0= temp[4*0+i] + temp[4*2+i];
317         const int z1= temp[4*0+i] - temp[4*2+i];
318         const int z2= temp[4*1+i] - temp[4*3+i];
319         const int z3= temp[4*1+i] + temp[4*3+i];
320
321         block[stride*0 +offset]= (z0 + z3)>>1;
322         block[stride*2 +offset]= (z1 + z2)>>1;
323         block[stride*8 +offset]= (z1 - z2)>>1;
324         block[stride*10+offset]= (z0 - z3)>>1;
325     }
326 }
327 #endif
328
329 #undef xStride
330 #undef stride
331
332 static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
333     const int stride= 16*2;
334     const int xStride= 16;
335     int a,b,c,d,e;
336
337     a= block[stride*0 + xStride*0];
338     b= block[stride*0 + xStride*1];
339     c= block[stride*1 + xStride*0];
340     d= block[stride*1 + xStride*1];
341
342     e= a-b;
343     a= a+b;
344     b= c-d;
345     c= c+d;
346
347     block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
348     block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
349     block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
350     block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
351 }
352
353 #if 0
354 static void chroma_dc_dct_c(DCTELEM *block){
355     const int stride= 16*2;
356     const int xStride= 16;
357     int a,b,c,d,e;
358
359     a= block[stride*0 + xStride*0];
360     b= block[stride*0 + xStride*1];
361     c= block[stride*1 + xStride*0];
362     d= block[stride*1 + xStride*1];
363
364     e= a-b;
365     a= a+b;
366     b= c-d;
367     c= c+d;
368
369     block[stride*0 + xStride*0]= (a+c);
370     block[stride*0 + xStride*1]= (e+b);
371     block[stride*1 + xStride*0]= (a-c);
372     block[stride*1 + xStride*1]= (e-b);
373 }
374 #endif
375
376 static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
377                            uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
378                            int src_x_offset, int src_y_offset,
379                            qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
380     MpegEncContext * const s = &h->s;
381     const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
382     int my=       h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
383     const int luma_xy= (mx&3) + ((my&3)<<2);
384     uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
385     uint8_t * src_cb, * src_cr;
386     int extra_width= h->emu_edge_width;
387     int extra_height= h->emu_edge_height;
388     int emu=0;
389     const int full_mx= mx>>2;
390     const int full_my= my>>2;
391     const int pic_width  = 16*s->mb_width;
392     const int pic_height = 16*s->mb_height >> MB_FIELD;
393
394     if(mx&7) extra_width -= 3;
395     if(my&7) extra_height -= 3;
396
397     if(   full_mx < 0-extra_width
398        || full_my < 0-extra_height
399        || full_mx + 16/*FIXME*/ > pic_width + extra_width
400        || full_my + 16/*FIXME*/ > pic_height + extra_height){
401         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);
402             src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
403         emu=1;
404     }
405
406     qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
407     if(!square){
408         qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
409     }
410
411     if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
412
413     if(MB_FIELD){
414         // chroma offset when predicting from a field of opposite parity
415         my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
416         emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
417     }
418     src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
419     src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
420
421     if(emu){
422         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);
423             src_cb= s->edge_emu_buffer;
424     }
425     chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
426
427     if(emu){
428         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);
429             src_cr= s->edge_emu_buffer;
430     }
431     chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
432 }
433
434 static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
435                            uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
436                            int x_offset, int y_offset,
437                            qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
438                            qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
439                            int list0, int list1){
440     MpegEncContext * const s = &h->s;
441     qpel_mc_func *qpix_op=  qpix_put;
442     h264_chroma_mc_func chroma_op= chroma_put;
443
444     dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
445     dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
446     dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
447     x_offset += 8*s->mb_x;
448     y_offset += 8*(s->mb_y >> MB_FIELD);
449
450     if(list0){
451         Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
452         mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
453                            dest_y, dest_cb, dest_cr, x_offset, y_offset,
454                            qpix_op, chroma_op);
455
456         qpix_op=  qpix_avg;
457         chroma_op= chroma_avg;
458     }
459
460     if(list1){
461         Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
462         mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
463                            dest_y, dest_cb, dest_cr, x_offset, y_offset,
464                            qpix_op, chroma_op);
465     }
466 }
467
468 static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
469                            uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
470                            int x_offset, int y_offset,
471                            qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
472                            h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
473                            h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
474                            int list0, int list1){
475     MpegEncContext * const s = &h->s;
476
477     dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
478     dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
479     dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
480     x_offset += 8*s->mb_x;
481     y_offset += 8*(s->mb_y >> MB_FIELD);
482
483     if(list0 && list1){
484         /* don't optimize for luma-only case, since B-frames usually
485          * use implicit weights => chroma too. */
486         uint8_t *tmp_cb = s->obmc_scratchpad;
487         uint8_t *tmp_cr = s->obmc_scratchpad + 8;
488         uint8_t *tmp_y  = s->obmc_scratchpad + 8*h->mb_uvlinesize;
489         int refn0 = h->ref_cache[0][ scan8[n] ];
490         int refn1 = h->ref_cache[1][ scan8[n] ];
491
492         mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
493                     dest_y, dest_cb, dest_cr,
494                     x_offset, y_offset, qpix_put, chroma_put);
495         mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
496                     tmp_y, tmp_cb, tmp_cr,
497                     x_offset, y_offset, qpix_put, chroma_put);
498
499         if(h->use_weight == 2){
500             int weight0 = h->implicit_weight[refn0][refn1];
501             int weight1 = 64 - weight0;
502             luma_weight_avg(  dest_y,  tmp_y,  h->  mb_linesize, 5, weight0, weight1, 0);
503             chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
504             chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
505         }else{
506             luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
507                             h->luma_weight[0][refn0], h->luma_weight[1][refn1],
508                             h->luma_offset[0][refn0] + h->luma_offset[1][refn1]);
509             chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
510                             h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0],
511                             h->chroma_offset[0][refn0][0] + h->chroma_offset[1][refn1][0]);
512             chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
513                             h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1],
514                             h->chroma_offset[0][refn0][1] + h->chroma_offset[1][refn1][1]);
515         }
516     }else{
517         int list = list1 ? 1 : 0;
518         int refn = h->ref_cache[list][ scan8[n] ];
519         Picture *ref= &h->ref_list[list][refn];
520         mc_dir_part(h, ref, n, square, chroma_height, delta, list,
521                     dest_y, dest_cb, dest_cr, x_offset, y_offset,
522                     qpix_put, chroma_put);
523
524         luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
525                        h->luma_weight[list][refn], h->luma_offset[list][refn]);
526         if(h->use_weight_chroma){
527             chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
528                              h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]);
529             chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
530                              h->chroma_weight[list][refn][1], h->chroma_offset[list][refn][1]);
531         }
532     }
533 }
534
535 static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
536                            uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
537                            int x_offset, int y_offset,
538                            qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
539                            qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
540                            h264_weight_func *weight_op, h264_biweight_func *weight_avg,
541                            int list0, int list1){
542     if((h->use_weight==2 && list0 && list1
543         && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32))
544        || h->use_weight==1)
545         mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
546                          x_offset, y_offset, qpix_put, chroma_put,
547                          weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
548     else
549         mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
550                     x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
551 }
552
553 static inline void prefetch_motion(H264Context *h, int list){
554     /* fetch pixels for estimated mv 4 macroblocks ahead
555      * optimized for 64byte cache lines */
556     MpegEncContext * const s = &h->s;
557     const int refn = h->ref_cache[list][scan8[0]];
558     if(refn >= 0){
559         const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
560         const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
561         uint8_t **src= h->ref_list[list][refn].data;
562         int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
563         s->dsp.prefetch(src[0]+off, s->linesize, 4);
564         off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
565         s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
566     }
567 }
568
569 static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
570                       qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
571                       qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
572                       h264_weight_func *weight_op, h264_biweight_func *weight_avg){
573     MpegEncContext * const s = &h->s;
574     const int mb_xy= h->mb_xy;
575     const int mb_type= s->current_picture.mb_type[mb_xy];
576
577     assert(IS_INTER(mb_type));
578
579     prefetch_motion(h, 0);
580
581     if(IS_16X16(mb_type)){
582         mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
583                 qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
584                 &weight_op[0], &weight_avg[0],
585                 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
586     }else if(IS_16X8(mb_type)){
587         mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
588                 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
589                 &weight_op[1], &weight_avg[1],
590                 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
591         mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
592                 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
593                 &weight_op[1], &weight_avg[1],
594                 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
595     }else if(IS_8X16(mb_type)){
596         mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
597                 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
598                 &weight_op[2], &weight_avg[2],
599                 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
600         mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
601                 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
602                 &weight_op[2], &weight_avg[2],
603                 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
604     }else{
605         int i;
606
607         assert(IS_8X8(mb_type));
608
609         for(i=0; i<4; i++){
610             const int sub_mb_type= h->sub_mb_type[i];
611             const int n= 4*i;
612             int x_offset= (i&1)<<2;
613             int y_offset= (i&2)<<1;
614
615             if(IS_SUB_8X8(sub_mb_type)){
616                 mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
617                     qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
618                     &weight_op[3], &weight_avg[3],
619                     IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
620             }else if(IS_SUB_8X4(sub_mb_type)){
621                 mc_part(h, n  , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
622                     qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
623                     &weight_op[4], &weight_avg[4],
624                     IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
625                 mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
626                     qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
627                     &weight_op[4], &weight_avg[4],
628                     IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
629             }else if(IS_SUB_4X8(sub_mb_type)){
630                 mc_part(h, n  , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
631                     qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
632                     &weight_op[5], &weight_avg[5],
633                     IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
634                 mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
635                     qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
636                     &weight_op[5], &weight_avg[5],
637                     IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
638             }else{
639                 int j;
640                 assert(IS_SUB_4X4(sub_mb_type));
641                 for(j=0; j<4; j++){
642                     int sub_x_offset= x_offset + 2*(j&1);
643                     int sub_y_offset= y_offset +   (j&2);
644                     mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
645                         qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
646                         &weight_op[6], &weight_avg[6],
647                         IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
648                 }
649             }
650         }
651     }
652
653     prefetch_motion(h, 1);
654 }
655
656
657 static void free_tables(H264Context *h){
658     int i;
659     H264Context *hx;
660     av_freep(&h->intra4x4_pred_mode);
661     av_freep(&h->chroma_pred_mode_table);
662     av_freep(&h->cbp_table);
663     av_freep(&h->mvd_table[0]);
664     av_freep(&h->mvd_table[1]);
665     av_freep(&h->direct_table);
666     av_freep(&h->non_zero_count);
667     av_freep(&h->slice_table_base);
668     h->slice_table= NULL;
669     av_freep(&h->list_counts);
670
671     av_freep(&h->mb2b_xy);
672     av_freep(&h->mb2b8_xy);
673
674     for(i = 0; i < MAX_THREADS; i++) {
675         hx = h->thread_context[i];
676         if(!hx) continue;
677         av_freep(&hx->top_borders[1]);
678         av_freep(&hx->top_borders[0]);
679         av_freep(&hx->s.obmc_scratchpad);
680         av_freep(&hx->rbsp_buffer[1]);
681         av_freep(&hx->rbsp_buffer[0]);
682         hx->rbsp_buffer_size[0] = 0;
683         hx->rbsp_buffer_size[1] = 0;
684         if (i) av_freep(&h->thread_context[i]);
685     }
686 }
687
688 static void init_dequant8_coeff_table(H264Context *h){
689     int i,q,x;
690     const int transpose = (h->s.dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
691     h->dequant8_coeff[0] = h->dequant8_buffer[0];
692     h->dequant8_coeff[1] = h->dequant8_buffer[1];
693
694     for(i=0; i<2; i++ ){
695         if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
696             h->dequant8_coeff[1] = h->dequant8_buffer[0];
697             break;
698         }
699
700         for(q=0; q<52; q++){
701             int shift = div6[q];
702             int idx = rem6[q];
703             for(x=0; x<64; x++)
704                 h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
705                     ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
706                     h->pps.scaling_matrix8[i][x]) << shift;
707         }
708     }
709 }
710
711 static void init_dequant4_coeff_table(H264Context *h){
712     int i,j,q,x;
713     const int transpose = (h->s.dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
714     for(i=0; i<6; i++ ){
715         h->dequant4_coeff[i] = h->dequant4_buffer[i];
716         for(j=0; j<i; j++){
717             if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
718                 h->dequant4_coeff[i] = h->dequant4_buffer[j];
719                 break;
720             }
721         }
722         if(j<i)
723             continue;
724
725         for(q=0; q<52; q++){
726             int shift = div6[q] + 2;
727             int idx = rem6[q];
728             for(x=0; x<16; x++)
729                 h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
730                     ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
731                     h->pps.scaling_matrix4[i][x]) << shift;
732         }
733     }
734 }
735
736 static void init_dequant_tables(H264Context *h){
737     int i,x;
738     init_dequant4_coeff_table(h);
739     if(h->pps.transform_8x8_mode)
740         init_dequant8_coeff_table(h);
741     if(h->sps.transform_bypass){
742         for(i=0; i<6; i++)
743             for(x=0; x<16; x++)
744                 h->dequant4_coeff[i][0][x] = 1<<6;
745         if(h->pps.transform_8x8_mode)
746             for(i=0; i<2; i++)
747                 for(x=0; x<64; x++)
748                     h->dequant8_coeff[i][0][x] = 1<<6;
749     }
750 }
751
752
753 int ff_h264_alloc_tables(H264Context *h){
754     MpegEncContext * const s = &h->s;
755     const int big_mb_num= s->mb_stride * (s->mb_height+1);
756     int x,y;
757
758     FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, big_mb_num * 8  * sizeof(uint8_t), fail)
759
760     FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count    , big_mb_num * 32 * sizeof(uint8_t), fail)
761     FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base  , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base), fail)
762     FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table, big_mb_num * sizeof(uint16_t), fail)
763
764     FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t), fail)
765     FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0], 32*big_mb_num * sizeof(uint16_t), fail);
766     FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t), fail);
767     FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 32*big_mb_num * sizeof(uint8_t) , fail);
768     FF_ALLOCZ_OR_GOTO(h->s.avctx, h->list_counts, big_mb_num * sizeof(uint8_t), fail)
769
770     memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride)  * sizeof(*h->slice_table_base));
771     h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
772
773     FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy  , big_mb_num * sizeof(uint32_t), fail);
774     FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b8_xy , big_mb_num * sizeof(uint32_t), fail);
775     for(y=0; y<s->mb_height; y++){
776         for(x=0; x<s->mb_width; x++){
777             const int mb_xy= x + y*s->mb_stride;
778             const int b_xy = 4*x + 4*y*h->b_stride;
779             const int b8_xy= 2*x + 2*y*h->b8_stride;
780
781             h->mb2b_xy [mb_xy]= b_xy;
782             h->mb2b8_xy[mb_xy]= b8_xy;
783         }
784     }
785
786     s->obmc_scratchpad = NULL;
787
788     if(!h->dequant4_coeff[0])
789         init_dequant_tables(h);
790
791     return 0;
792 fail:
793     free_tables(h);
794     return -1;
795 }
796
797 /**
798  * Mimic alloc_tables(), but for every context thread.
799  */
800 static void clone_tables(H264Context *dst, H264Context *src){
801     dst->intra4x4_pred_mode       = src->intra4x4_pred_mode;
802     dst->non_zero_count           = src->non_zero_count;
803     dst->slice_table              = src->slice_table;
804     dst->cbp_table                = src->cbp_table;
805     dst->mb2b_xy                  = src->mb2b_xy;
806     dst->mb2b8_xy                 = src->mb2b8_xy;
807     dst->chroma_pred_mode_table   = src->chroma_pred_mode_table;
808     dst->mvd_table[0]             = src->mvd_table[0];
809     dst->mvd_table[1]             = src->mvd_table[1];
810     dst->direct_table             = src->direct_table;
811
812     dst->s.obmc_scratchpad = NULL;
813     ff_h264_pred_init(&dst->hpc, src->s.codec_id);
814 }
815
816 /**
817  * Init context
818  * Allocate buffers which are not shared amongst multiple threads.
819  */
820 static int context_init(H264Context *h){
821     FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
822     FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
823
824     return 0;
825 fail:
826     return -1; // free_tables will clean up for us
827 }
828
829 static av_cold void common_init(H264Context *h){
830     MpegEncContext * const s = &h->s;
831
832     s->width = s->avctx->width;
833     s->height = s->avctx->height;
834     s->codec_id= s->avctx->codec->id;
835
836     ff_h264_pred_init(&h->hpc, s->codec_id);
837
838     h->dequant_coeff_pps= -1;
839     s->unrestricted_mv=1;
840     s->decode=1; //FIXME
841
842     dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early
843
844     memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
845     memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
846 }
847
848 av_cold int ff_h264_decode_init(AVCodecContext *avctx){
849     H264Context *h= avctx->priv_data;
850     MpegEncContext * const s = &h->s;
851
852     MPV_decode_defaults(s);
853
854     s->avctx = avctx;
855     common_init(h);
856
857     s->out_format = FMT_H264;
858     s->workaround_bugs= avctx->workaround_bugs;
859
860     // set defaults
861 //    s->decode_mb= ff_h263_decode_mb;
862     s->quarter_sample = 1;
863     if(!avctx->has_b_frames)
864     s->low_delay= 1;
865
866     avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
867
868     ff_h264_decode_init_vlc();
869
870     if(avctx->extradata_size > 0 && avctx->extradata &&
871        *(char *)avctx->extradata == 1){
872         h->is_avc = 1;
873         h->got_avcC = 0;
874     } else {
875         h->is_avc = 0;
876     }
877
878     h->thread_context[0] = h;
879     h->outputed_poc = INT_MIN;
880     h->prev_poc_msb= 1<<16;
881     ff_h264_reset_sei(h);
882     if(avctx->codec_id == CODEC_ID_H264){
883         if(avctx->ticks_per_frame == 1){
884             s->avctx->time_base.den *=2;
885         }
886         avctx->ticks_per_frame = 2;
887     }
888     return 0;
889 }
890
891 int ff_h264_frame_start(H264Context *h){
892     MpegEncContext * const s = &h->s;
893     int i;
894
895     if(MPV_frame_start(s, s->avctx) < 0)
896         return -1;
897     ff_er_frame_start(s);
898     /*
899      * MPV_frame_start uses pict_type to derive key_frame.
900      * This is incorrect for H.264; IDR markings must be used.
901      * Zero here; IDR markings per slice in frame or fields are ORed in later.
902      * See decode_nal_units().
903      */
904     s->current_picture_ptr->key_frame= 0;
905     s->current_picture_ptr->mmco_reset= 0;
906
907     assert(s->linesize && s->uvlinesize);
908
909     for(i=0; i<16; i++){
910         h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
911         h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
912     }
913     for(i=0; i<4; i++){
914         h->block_offset[16+i]=
915         h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
916         h->block_offset[24+16+i]=
917         h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
918     }
919
920     /* can't be in alloc_tables because linesize isn't known there.
921      * FIXME: redo bipred weight to not require extra buffer? */
922     for(i = 0; i < s->avctx->thread_count; i++)
923         if(!h->thread_context[i]->s.obmc_scratchpad)
924             h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
925
926     /* some macroblocks will be accessed before they're available */
927     if(FRAME_MBAFF || s->avctx->thread_count > 1)
928         memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
929
930 //    s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
931
932     // We mark the current picture as non-reference after allocating it, so
933     // that if we break out due to an error it can be released automatically
934     // in the next MPV_frame_start().
935     // SVQ3 as well as most other codecs have only last/next/current and thus
936     // get released even with set reference, besides SVQ3 and others do not
937     // mark frames as reference later "naturally".
938     if(s->codec_id != CODEC_ID_SVQ3)
939         s->current_picture_ptr->reference= 0;
940
941     s->current_picture_ptr->field_poc[0]=
942     s->current_picture_ptr->field_poc[1]= INT_MAX;
943     assert(s->current_picture_ptr->long_ref==0);
944
945     return 0;
946 }
947
948 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){
949     MpegEncContext * const s = &h->s;
950     int top_idx = 1;
951
952     src_y  -=   linesize;
953     src_cb -= uvlinesize;
954     src_cr -= uvlinesize;
955
956     if(!simple && FRAME_MBAFF){
957         if(s->mb_y&1){
958             if(!MB_MBAFF){
959                 *(uint64_t*)(h->top_borders[0][s->mb_x]+ 0)= *(uint64_t*)(src_y +  15*linesize);
960                 *(uint64_t*)(h->top_borders[0][s->mb_x]+ 8)= *(uint64_t*)(src_y +8+15*linesize);
961                 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
962                     *(uint64_t*)(h->top_borders[0][s->mb_x]+16)= *(uint64_t*)(src_cb+7*uvlinesize);
963                     *(uint64_t*)(h->top_borders[0][s->mb_x]+24)= *(uint64_t*)(src_cr+7*uvlinesize);
964                 }
965             }
966         }else if(MB_MBAFF){
967             top_idx = 0;
968         }else
969             return;
970     }
971
972     // There are two lines saved, the line above the the top macroblock of a pair,
973     // and the line above the bottom macroblock
974
975     *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0)= *(uint64_t*)(src_y +  16*linesize);
976     *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8)= *(uint64_t*)(src_y +8+16*linesize);
977
978     if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
979         *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16)= *(uint64_t*)(src_cb+8*uvlinesize);
980         *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24)= *(uint64_t*)(src_cr+8*uvlinesize);
981     }
982 }
983
984 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){
985     MpegEncContext * const s = &h->s;
986     int temp8, i;
987     uint64_t temp64;
988     int deblock_left;
989     int deblock_top;
990     int mb_xy;
991     int top_idx = 1;
992
993     if(!simple && FRAME_MBAFF){
994         if(s->mb_y&1){
995             if(!MB_MBAFF)
996                 return;
997         }else{
998             top_idx = MB_MBAFF ? 0 : 1;
999         }
1000     }
1001
1002     if(h->deblocking_filter == 2) {
1003         mb_xy = h->mb_xy;
1004         deblock_left = h->slice_table[mb_xy] == h->slice_table[mb_xy - 1];
1005         deblock_top  = h->slice_table[mb_xy] == h->slice_table[h->top_mb_xy];
1006     } else {
1007         deblock_left = (s->mb_x > 0);
1008         deblock_top =  (s->mb_y > !!MB_FIELD);
1009     }
1010
1011     src_y  -=   linesize + 1;
1012     src_cb -= uvlinesize + 1;
1013     src_cr -= uvlinesize + 1;
1014
1015 #define XCHG(a,b,t,xchg)\
1016 t= a;\
1017 if(xchg)\
1018     a= b;\
1019 b= t;
1020
1021     if(deblock_top){
1022         if(deblock_left){
1023             XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x-1]+8), *(uint64_t*)(src_y -7), temp64, 1);
1024         }
1025         XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg);
1026         XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1);
1027         if(s->mb_x+1 < s->mb_width){
1028             XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x+1]), *(uint64_t*)(src_y +17), temp64, 1);
1029         }
1030     }
1031
1032     if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1033         if(deblock_top){
1034             if(deblock_left){
1035                 XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x-1]+16), *(uint64_t*)(src_cb -7), temp64, 1);
1036                 XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x-1]+24), *(uint64_t*)(src_cr -7), temp64, 1);
1037             }
1038             XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1);
1039             XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1);
1040         }
1041     }
1042 }
1043
1044 static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
1045     MpegEncContext * const s = &h->s;
1046     const int mb_x= s->mb_x;
1047     const int mb_y= s->mb_y;
1048     const int mb_xy= h->mb_xy;
1049     const int mb_type= s->current_picture.mb_type[mb_xy];
1050     uint8_t  *dest_y, *dest_cb, *dest_cr;
1051     int linesize, uvlinesize /*dct_offset*/;
1052     int i;
1053     int *block_offset = &h->block_offset[0];
1054     const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
1055     /* is_h264 should always be true if SVQ3 is disabled. */
1056     const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
1057     void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1058     void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
1059
1060     dest_y  = s->current_picture.data[0] + (mb_x + mb_y * s->linesize  ) * 16;
1061     dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
1062     dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
1063
1064     s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
1065     s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
1066
1067     h->list_counts[mb_xy]= h->list_count;
1068
1069     if (!simple && MB_FIELD) {
1070         linesize   = h->mb_linesize   = s->linesize * 2;
1071         uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
1072         block_offset = &h->block_offset[24];
1073         if(mb_y&1){ //FIXME move out of this function?
1074             dest_y -= s->linesize*15;
1075             dest_cb-= s->uvlinesize*7;
1076             dest_cr-= s->uvlinesize*7;
1077         }
1078         if(FRAME_MBAFF) {
1079             int list;
1080             for(list=0; list<h->list_count; list++){
1081                 if(!USES_LIST(mb_type, list))
1082                     continue;
1083                 if(IS_16X16(mb_type)){
1084                     int8_t *ref = &h->ref_cache[list][scan8[0]];
1085                     fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
1086                 }else{
1087                     for(i=0; i<16; i+=4){
1088                         int ref = h->ref_cache[list][scan8[i]];
1089                         if(ref >= 0)
1090                             fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
1091                     }
1092                 }
1093             }
1094         }
1095     } else {
1096         linesize   = h->mb_linesize   = s->linesize;
1097         uvlinesize = h->mb_uvlinesize = s->uvlinesize;
1098 //        dct_offset = s->linesize * 16;
1099     }
1100
1101     if (!simple && IS_INTRA_PCM(mb_type)) {
1102         for (i=0; i<16; i++) {
1103             memcpy(dest_y + i*  linesize, h->mb       + i*8, 16);
1104         }
1105         for (i=0; i<8; i++) {
1106             memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4,  8);
1107             memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4,  8);
1108         }
1109     } else {
1110         if(IS_INTRA(mb_type)){
1111             if(h->deblocking_filter)
1112                 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
1113
1114             if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1115                 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
1116                 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
1117             }
1118
1119             if(IS_INTRA4x4(mb_type)){
1120                 if(simple || !s->encoding){
1121                     if(IS_8x8DCT(mb_type)){
1122                         if(transform_bypass){
1123                             idct_dc_add =
1124                             idct_add    = s->dsp.add_pixels8;
1125                         }else{
1126                             idct_dc_add = s->dsp.h264_idct8_dc_add;
1127                             idct_add    = s->dsp.h264_idct8_add;
1128                         }
1129                         for(i=0; i<16; i+=4){
1130                             uint8_t * const ptr= dest_y + block_offset[i];
1131                             const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1132                             if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1133                                 h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
1134                             }else{
1135                                 const int nnz = h->non_zero_count_cache[ scan8[i] ];
1136                                 h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
1137                                                             (h->topright_samples_available<<i)&0x4000, linesize);
1138                                 if(nnz){
1139                                     if(nnz == 1 && h->mb[i*16])
1140                                         idct_dc_add(ptr, h->mb + i*16, linesize);
1141                                     else
1142                                         idct_add   (ptr, h->mb + i*16, linesize);
1143                                 }
1144                             }
1145                         }
1146                     }else{
1147                         if(transform_bypass){
1148                             idct_dc_add =
1149                             idct_add    = s->dsp.add_pixels4;
1150                         }else{
1151                             idct_dc_add = s->dsp.h264_idct_dc_add;
1152                             idct_add    = s->dsp.h264_idct_add;
1153                         }
1154                         for(i=0; i<16; i++){
1155                             uint8_t * const ptr= dest_y + block_offset[i];
1156                             const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1157
1158                             if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1159                                 h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
1160                             }else{
1161                                 uint8_t *topright;
1162                                 int nnz, tr;
1163                                 if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
1164                                     const int topright_avail= (h->topright_samples_available<<i)&0x8000;
1165                                     assert(mb_y || linesize <= block_offset[i]);
1166                                     if(!topright_avail){
1167                                         tr= ptr[3 - linesize]*0x01010101;
1168                                         topright= (uint8_t*) &tr;
1169                                     }else
1170                                         topright= ptr + 4 - linesize;
1171                                 }else
1172                                     topright= NULL;
1173
1174                                 h->hpc.pred4x4[ dir ](ptr, topright, linesize);
1175                                 nnz = h->non_zero_count_cache[ scan8[i] ];
1176                                 if(nnz){
1177                                     if(is_h264){
1178                                         if(nnz == 1 && h->mb[i*16])
1179                                             idct_dc_add(ptr, h->mb + i*16, linesize);
1180                                         else
1181                                             idct_add   (ptr, h->mb + i*16, linesize);
1182                                     }else
1183                                         svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
1184                                 }
1185                             }
1186                         }
1187                     }
1188                 }
1189             }else{
1190                 h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
1191                 if(is_h264){
1192                     if(!transform_bypass)
1193                         h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
1194                 }else
1195                     svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
1196             }
1197             if(h->deblocking_filter)
1198                 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
1199         }else if(is_h264){
1200             hl_motion(h, dest_y, dest_cb, dest_cr,
1201                       s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1202                       s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1203                       s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab);
1204         }
1205
1206
1207         if(!IS_INTRA4x4(mb_type)){
1208             if(is_h264){
1209                 if(IS_INTRA16x16(mb_type)){
1210                     if(transform_bypass){
1211                         if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
1212                             h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
1213                         }else{
1214                             for(i=0; i<16; i++){
1215                                 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1216                                     s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
1217                             }
1218                         }
1219                     }else{
1220                          s->dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1221                     }
1222                 }else if(h->cbp&15){
1223                     if(transform_bypass){
1224                         const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1225                         idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
1226                         for(i=0; i<16; i+=di){
1227                             if(h->non_zero_count_cache[ scan8[i] ]){
1228                                 idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
1229                             }
1230                         }
1231                     }else{
1232                         if(IS_8x8DCT(mb_type)){
1233                             s->dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1234                         }else{
1235                             s->dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1236                         }
1237                     }
1238                 }
1239             }else{
1240                 for(i=0; i<16; i++){
1241                     if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
1242                         uint8_t * const ptr= dest_y + block_offset[i];
1243                         svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1244                     }
1245                 }
1246             }
1247         }
1248
1249         if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
1250             uint8_t *dest[2] = {dest_cb, dest_cr};
1251             if(transform_bypass){
1252                 if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
1253                     h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
1254                     h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
1255                 }else{
1256                     idct_add = s->dsp.add_pixels4;
1257                     for(i=16; i<16+8; i++){
1258                         if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1259                             idct_add   (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1260                     }
1261                 }
1262             }else{
1263                 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]);
1264                 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]);
1265                 if(is_h264){
1266                     idct_add = s->dsp.h264_idct_add;
1267                     idct_dc_add = s->dsp.h264_idct_dc_add;
1268                     for(i=16; i<16+8; i++){
1269                         if(h->non_zero_count_cache[ scan8[i] ])
1270                             idct_add   (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1271                         else if(h->mb[i*16])
1272                             idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1273                     }
1274                 }else{
1275                     for(i=16; i<16+8; i++){
1276                         if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
1277                             uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
1278                             svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[s->qscale + 12] - 12, 2);
1279                         }
1280                     }
1281                 }
1282             }
1283         }
1284     }
1285     if(h->cbp || IS_INTRA(mb_type))
1286         s->dsp.clear_blocks(h->mb);
1287
1288     if(h->deblocking_filter && 0) {
1289         backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, simple);
1290         fill_caches(h, mb_type, 1); //FIXME don't fill stuff which isn't used by filter_mb
1291         h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
1292         h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
1293         if (!simple && FRAME_MBAFF) {
1294             ff_h264_filter_mb     (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
1295         } else {
1296             ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
1297         }
1298     }
1299 }
1300
1301 /**
1302  * Process a macroblock; this case avoids checks for expensive uncommon cases.
1303  */
1304 static void hl_decode_mb_simple(H264Context *h){
1305     hl_decode_mb_internal(h, 1);
1306 }
1307
1308 /**
1309  * Process a macroblock; this handles edge cases, such as interlacing.
1310  */
1311 static void av_noinline hl_decode_mb_complex(H264Context *h){
1312     hl_decode_mb_internal(h, 0);
1313 }
1314
1315 void ff_h264_hl_decode_mb(H264Context *h){
1316     MpegEncContext * const s = &h->s;
1317     const int mb_xy= h->mb_xy;
1318     const int mb_type= s->current_picture.mb_type[mb_xy];
1319     int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1320
1321     if (is_complex)
1322         hl_decode_mb_complex(h);
1323     else hl_decode_mb_simple(h);
1324 }
1325
1326 static int pred_weight_table(H264Context *h){
1327     MpegEncContext * const s = &h->s;
1328     int list, i;
1329     int luma_def, chroma_def;
1330
1331     h->use_weight= 0;
1332     h->use_weight_chroma= 0;
1333     h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
1334     h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
1335     luma_def = 1<<h->luma_log2_weight_denom;
1336     chroma_def = 1<<h->chroma_log2_weight_denom;
1337
1338     for(list=0; list<2; list++){
1339         h->luma_weight_flag[list]   = 0;
1340         h->chroma_weight_flag[list] = 0;
1341         for(i=0; i<h->ref_count[list]; i++){
1342             int luma_weight_flag, chroma_weight_flag;
1343
1344             luma_weight_flag= get_bits1(&s->gb);
1345             if(luma_weight_flag){
1346                 h->luma_weight[list][i]= get_se_golomb(&s->gb);
1347                 h->luma_offset[list][i]= get_se_golomb(&s->gb);
1348                 if(   h->luma_weight[list][i] != luma_def
1349                    || h->luma_offset[list][i] != 0) {
1350                     h->use_weight= 1;
1351                     h->luma_weight_flag[list]= 1;
1352                 }
1353             }else{
1354                 h->luma_weight[list][i]= luma_def;
1355                 h->luma_offset[list][i]= 0;
1356             }
1357
1358             if(CHROMA){
1359                 chroma_weight_flag= get_bits1(&s->gb);
1360                 if(chroma_weight_flag){
1361                     int j;
1362                     for(j=0; j<2; j++){
1363                         h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
1364                         h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
1365                         if(   h->chroma_weight[list][i][j] != chroma_def
1366                            || h->chroma_offset[list][i][j] != 0) {
1367                             h->use_weight_chroma= 1;
1368                             h->chroma_weight_flag[list]= 1;
1369                         }
1370                     }
1371                 }else{
1372                     int j;
1373                     for(j=0; j<2; j++){
1374                         h->chroma_weight[list][i][j]= chroma_def;
1375                         h->chroma_offset[list][i][j]= 0;
1376                     }
1377                 }
1378             }
1379         }
1380         if(h->slice_type_nos != FF_B_TYPE) break;
1381     }
1382     h->use_weight= h->use_weight || h->use_weight_chroma;
1383     return 0;
1384 }
1385
1386 static void implicit_weight_table(H264Context *h){
1387     MpegEncContext * const s = &h->s;
1388     int ref0, ref1, i;
1389     int cur_poc = s->current_picture_ptr->poc;
1390
1391     for (i = 0; i < 2; i++) {
1392         h->luma_weight_flag[i]   = 0;
1393         h->chroma_weight_flag[i] = 0;
1394     }
1395
1396     if(   h->ref_count[0] == 1 && h->ref_count[1] == 1
1397        && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
1398         h->use_weight= 0;
1399         h->use_weight_chroma= 0;
1400         return;
1401     }
1402
1403     h->use_weight= 2;
1404     h->use_weight_chroma= 2;
1405     h->luma_log2_weight_denom= 5;
1406     h->chroma_log2_weight_denom= 5;
1407
1408     for(ref0=0; ref0 < h->ref_count[0]; ref0++){
1409         int poc0 = h->ref_list[0][ref0].poc;
1410         for(ref1=0; ref1 < h->ref_count[1]; ref1++){
1411             int poc1 = h->ref_list[1][ref1].poc;
1412             int td = av_clip(poc1 - poc0, -128, 127);
1413             if(td){
1414                 int tb = av_clip(cur_poc - poc0, -128, 127);
1415                 int tx = (16384 + (FFABS(td) >> 1)) / td;
1416                 int dist_scale_factor = av_clip((tb*tx + 32) >> 6, -1024, 1023) >> 2;
1417                 if(dist_scale_factor < -64 || dist_scale_factor > 128)
1418                     h->implicit_weight[ref0][ref1] = 32;
1419                 else
1420                     h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor;
1421             }else
1422                 h->implicit_weight[ref0][ref1] = 32;
1423         }
1424     }
1425 }
1426
1427 /**
1428  * instantaneous decoder refresh.
1429  */
1430 static void idr(H264Context *h){
1431     ff_h264_remove_all_refs(h);
1432     h->prev_frame_num= 0;
1433     h->prev_frame_num_offset= 0;
1434     h->prev_poc_msb=
1435     h->prev_poc_lsb= 0;
1436 }
1437
1438 /* forget old pics after a seek */
1439 static void flush_dpb(AVCodecContext *avctx){
1440     H264Context *h= avctx->priv_data;
1441     int i;
1442     for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
1443         if(h->delayed_pic[i])
1444             h->delayed_pic[i]->reference= 0;
1445         h->delayed_pic[i]= NULL;
1446     }
1447     h->outputed_poc= INT_MIN;
1448     h->prev_interlaced_frame = 1;
1449     idr(h);
1450     if(h->s.current_picture_ptr)
1451         h->s.current_picture_ptr->reference= 0;
1452     h->s.first_field= 0;
1453     ff_h264_reset_sei(h);
1454     ff_mpeg_flush(avctx);
1455 }
1456
1457 static int init_poc(H264Context *h){
1458     MpegEncContext * const s = &h->s;
1459     const int max_frame_num= 1<<h->sps.log2_max_frame_num;
1460     int field_poc[2];
1461     Picture *cur = s->current_picture_ptr;
1462
1463     h->frame_num_offset= h->prev_frame_num_offset;
1464     if(h->frame_num < h->prev_frame_num)
1465         h->frame_num_offset += max_frame_num;
1466
1467     if(h->sps.poc_type==0){
1468         const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
1469
1470         if     (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
1471             h->poc_msb = h->prev_poc_msb + max_poc_lsb;
1472         else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
1473             h->poc_msb = h->prev_poc_msb - max_poc_lsb;
1474         else
1475             h->poc_msb = h->prev_poc_msb;
1476 //printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
1477         field_poc[0] =
1478         field_poc[1] = h->poc_msb + h->poc_lsb;
1479         if(s->picture_structure == PICT_FRAME)
1480             field_poc[1] += h->delta_poc_bottom;
1481     }else if(h->sps.poc_type==1){
1482         int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
1483         int i;
1484
1485         if(h->sps.poc_cycle_length != 0)
1486             abs_frame_num = h->frame_num_offset + h->frame_num;
1487         else
1488             abs_frame_num = 0;
1489
1490         if(h->nal_ref_idc==0 && abs_frame_num > 0)
1491             abs_frame_num--;
1492
1493         expected_delta_per_poc_cycle = 0;
1494         for(i=0; i < h->sps.poc_cycle_length; i++)
1495             expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
1496
1497         if(abs_frame_num > 0){
1498             int poc_cycle_cnt          = (abs_frame_num - 1) / h->sps.poc_cycle_length;
1499             int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
1500
1501             expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
1502             for(i = 0; i <= frame_num_in_poc_cycle; i++)
1503                 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
1504         } else
1505             expectedpoc = 0;
1506
1507         if(h->nal_ref_idc == 0)
1508             expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
1509
1510         field_poc[0] = expectedpoc + h->delta_poc[0];
1511         field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
1512
1513         if(s->picture_structure == PICT_FRAME)
1514             field_poc[1] += h->delta_poc[1];
1515     }else{
1516         int poc= 2*(h->frame_num_offset + h->frame_num);
1517
1518         if(!h->nal_ref_idc)
1519             poc--;
1520
1521         field_poc[0]= poc;
1522         field_poc[1]= poc;
1523     }
1524
1525     if(s->picture_structure != PICT_BOTTOM_FIELD)
1526         s->current_picture_ptr->field_poc[0]= field_poc[0];
1527     if(s->picture_structure != PICT_TOP_FIELD)
1528         s->current_picture_ptr->field_poc[1]= field_poc[1];
1529     cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
1530
1531     return 0;
1532 }
1533
1534
1535 /**
1536  * initialize scan tables
1537  */
1538 static void init_scan_tables(H264Context *h){
1539     MpegEncContext * const s = &h->s;
1540     int i;
1541     if(s->dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
1542         memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
1543         memcpy(h-> field_scan,  field_scan, 16*sizeof(uint8_t));
1544     }else{
1545         for(i=0; i<16; i++){
1546 #define T(x) (x>>2) | ((x<<2) & 0xF)
1547             h->zigzag_scan[i] = T(zigzag_scan[i]);
1548             h-> field_scan[i] = T( field_scan[i]);
1549 #undef T
1550         }
1551     }
1552     if(s->dsp.h264_idct8_add == ff_h264_idct8_add_c){
1553         memcpy(h->zigzag_scan8x8,       ff_zigzag_direct,     64*sizeof(uint8_t));
1554         memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
1555         memcpy(h->field_scan8x8,        field_scan8x8,        64*sizeof(uint8_t));
1556         memcpy(h->field_scan8x8_cavlc,  field_scan8x8_cavlc,  64*sizeof(uint8_t));
1557     }else{
1558         for(i=0; i<64; i++){
1559 #define T(x) (x>>3) | ((x&7)<<3)
1560             h->zigzag_scan8x8[i]       = T(ff_zigzag_direct[i]);
1561             h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
1562             h->field_scan8x8[i]        = T(field_scan8x8[i]);
1563             h->field_scan8x8_cavlc[i]  = T(field_scan8x8_cavlc[i]);
1564 #undef T
1565         }
1566     }
1567     if(h->sps.transform_bypass){ //FIXME same ugly
1568         h->zigzag_scan_q0          = zigzag_scan;
1569         h->zigzag_scan8x8_q0       = ff_zigzag_direct;
1570         h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
1571         h->field_scan_q0           = field_scan;
1572         h->field_scan8x8_q0        = field_scan8x8;
1573         h->field_scan8x8_cavlc_q0  = field_scan8x8_cavlc;
1574     }else{
1575         h->zigzag_scan_q0          = h->zigzag_scan;
1576         h->zigzag_scan8x8_q0       = h->zigzag_scan8x8;
1577         h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
1578         h->field_scan_q0           = h->field_scan;
1579         h->field_scan8x8_q0        = h->field_scan8x8;
1580         h->field_scan8x8_cavlc_q0  = h->field_scan8x8_cavlc;
1581     }
1582 }
1583
1584 static void field_end(H264Context *h){
1585     MpegEncContext * const s = &h->s;
1586     AVCodecContext * const avctx= s->avctx;
1587     s->mb_y= 0;
1588
1589     s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
1590     s->current_picture_ptr->pict_type= s->pict_type;
1591
1592     if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1593         ff_vdpau_h264_set_reference_frames(s);
1594
1595     if(!s->dropable) {
1596         ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1597         h->prev_poc_msb= h->poc_msb;
1598         h->prev_poc_lsb= h->poc_lsb;
1599     }
1600     h->prev_frame_num_offset= h->frame_num_offset;
1601     h->prev_frame_num= h->frame_num;
1602
1603     if (avctx->hwaccel) {
1604         if (avctx->hwaccel->end_frame(avctx) < 0)
1605             av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
1606     }
1607
1608     if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1609         ff_vdpau_h264_picture_complete(s);
1610
1611     /*
1612      * FIXME: Error handling code does not seem to support interlaced
1613      * when slices span multiple rows
1614      * The ff_er_add_slice calls don't work right for bottom
1615      * fields; they cause massive erroneous error concealing
1616      * Error marking covers both fields (top and bottom).
1617      * This causes a mismatched s->error_count
1618      * and a bad error table. Further, the error count goes to
1619      * INT_MAX when called for bottom field, because mb_y is
1620      * past end by one (callers fault) and resync_mb_y != 0
1621      * causes problems for the first MB line, too.
1622      */
1623     if (!FIELD_PICTURE)
1624         ff_er_frame_end(s);
1625
1626     MPV_frame_end(s);
1627
1628     h->current_slice=0;
1629 }
1630
1631 /**
1632  * Replicates H264 "master" context to thread contexts.
1633  */
1634 static void clone_slice(H264Context *dst, H264Context *src)
1635 {
1636     memcpy(dst->block_offset,     src->block_offset, sizeof(dst->block_offset));
1637     dst->s.current_picture_ptr  = src->s.current_picture_ptr;
1638     dst->s.current_picture      = src->s.current_picture;
1639     dst->s.linesize             = src->s.linesize;
1640     dst->s.uvlinesize           = src->s.uvlinesize;
1641     dst->s.first_field          = src->s.first_field;
1642
1643     dst->prev_poc_msb           = src->prev_poc_msb;
1644     dst->prev_poc_lsb           = src->prev_poc_lsb;
1645     dst->prev_frame_num_offset  = src->prev_frame_num_offset;
1646     dst->prev_frame_num         = src->prev_frame_num;
1647     dst->short_ref_count        = src->short_ref_count;
1648
1649     memcpy(dst->short_ref,        src->short_ref,        sizeof(dst->short_ref));
1650     memcpy(dst->long_ref,         src->long_ref,         sizeof(dst->long_ref));
1651     memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
1652     memcpy(dst->ref_list,         src->ref_list,         sizeof(dst->ref_list));
1653
1654     memcpy(dst->dequant4_coeff,   src->dequant4_coeff,   sizeof(src->dequant4_coeff));
1655     memcpy(dst->dequant8_coeff,   src->dequant8_coeff,   sizeof(src->dequant8_coeff));
1656 }
1657
1658 /**
1659  * decodes a slice header.
1660  * This will also call MPV_common_init() and frame_start() as needed.
1661  *
1662  * @param h h264context
1663  * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
1664  *
1665  * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
1666  */
1667 static int decode_slice_header(H264Context *h, H264Context *h0){
1668     MpegEncContext * const s = &h->s;
1669     MpegEncContext * const s0 = &h0->s;
1670     unsigned int first_mb_in_slice;
1671     unsigned int pps_id;
1672     int num_ref_idx_active_override_flag;
1673     unsigned int slice_type, tmp, i, j;
1674     int default_ref_list_done = 0;
1675     int last_pic_structure;
1676
1677     s->dropable= h->nal_ref_idc == 0;
1678
1679     if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
1680         s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
1681         s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
1682     }else{
1683         s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
1684         s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
1685     }
1686
1687     first_mb_in_slice= get_ue_golomb(&s->gb);
1688
1689     if(first_mb_in_slice == 0){ //FIXME better field boundary detection
1690         if(h0->current_slice && FIELD_PICTURE){
1691             field_end(h);
1692         }
1693
1694         h0->current_slice = 0;
1695         if (!s0->first_field)
1696             s->current_picture_ptr= NULL;
1697     }
1698
1699     slice_type= get_ue_golomb_31(&s->gb);
1700     if(slice_type > 9){
1701         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);
1702         return -1;
1703     }
1704     if(slice_type > 4){
1705         slice_type -= 5;
1706         h->slice_type_fixed=1;
1707     }else
1708         h->slice_type_fixed=0;
1709
1710     slice_type= golomb_to_pict_type[ slice_type ];
1711     if (slice_type == FF_I_TYPE
1712         || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
1713         default_ref_list_done = 1;
1714     }
1715     h->slice_type= slice_type;
1716     h->slice_type_nos= slice_type & 3;
1717
1718     s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
1719     if (s->pict_type == FF_B_TYPE && s0->last_picture_ptr == NULL) {
1720         av_log(h->s.avctx, AV_LOG_ERROR,
1721                "B picture before any references, skipping\n");
1722         return -1;
1723     }
1724
1725     pps_id= get_ue_golomb(&s->gb);
1726     if(pps_id>=MAX_PPS_COUNT){
1727         av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
1728         return -1;
1729     }
1730     if(!h0->pps_buffers[pps_id]) {
1731         av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
1732         return -1;
1733     }
1734     h->pps= *h0->pps_buffers[pps_id];
1735
1736     if(!h0->sps_buffers[h->pps.sps_id]) {
1737         av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
1738         return -1;
1739     }
1740     h->sps = *h0->sps_buffers[h->pps.sps_id];
1741
1742     if(h == h0 && h->dequant_coeff_pps != pps_id){
1743         h->dequant_coeff_pps = pps_id;
1744         init_dequant_tables(h);
1745     }
1746
1747     s->mb_width= h->sps.mb_width;
1748     s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
1749
1750     h->b_stride=  s->mb_width*4;
1751     h->b8_stride= s->mb_width*2;
1752
1753     s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
1754     if(h->sps.frame_mbs_only_flag)
1755         s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
1756     else
1757         s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
1758
1759     if (s->context_initialized
1760         && (   s->width != s->avctx->width || s->height != s->avctx->height)) {
1761         if(h != h0)
1762             return -1;   // width / height changed during parallelized decoding
1763         free_tables(h);
1764         flush_dpb(s->avctx);
1765         MPV_common_end(s);
1766     }
1767     if (!s->context_initialized) {
1768         if(h != h0)
1769             return -1;  // we cant (re-)initialize context during parallel decoding
1770
1771         avcodec_set_dimensions(s->avctx, s->width, s->height);
1772         s->avctx->sample_aspect_ratio= h->sps.sar;
1773         if(!s->avctx->sample_aspect_ratio.den)
1774             s->avctx->sample_aspect_ratio.den = 1;
1775
1776         if(h->sps.video_signal_type_present_flag){
1777             s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
1778             if(h->sps.colour_description_present_flag){
1779                 s->avctx->color_primaries = h->sps.color_primaries;
1780                 s->avctx->color_trc       = h->sps.color_trc;
1781                 s->avctx->colorspace      = h->sps.colorspace;
1782             }
1783         }
1784
1785         if(h->sps.timing_info_present_flag){
1786             s->avctx->time_base= (AVRational){h->sps.num_units_in_tick, h->sps.time_scale};
1787             if(h->x264_build > 0 && h->x264_build < 44)
1788                 s->avctx->time_base.den *= 2;
1789             av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
1790                       s->avctx->time_base.num, s->avctx->time_base.den, 1<<30);
1791         }
1792         s->avctx->pix_fmt = s->avctx->get_format(s->avctx, s->avctx->codec->pix_fmts);
1793         s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
1794
1795         if (MPV_common_init(s) < 0)
1796             return -1;
1797         s->first_field = 0;
1798         h->prev_interlaced_frame = 1;
1799
1800         init_scan_tables(h);
1801         ff_h264_alloc_tables(h);
1802
1803         for(i = 1; i < s->avctx->thread_count; i++) {
1804             H264Context *c;
1805             c = h->thread_context[i] = av_malloc(sizeof(H264Context));
1806             memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
1807             memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
1808             c->sps = h->sps;
1809             c->pps = h->pps;
1810             init_scan_tables(c);
1811             clone_tables(c, h);
1812         }
1813
1814         for(i = 0; i < s->avctx->thread_count; i++)
1815             if(context_init(h->thread_context[i]) < 0)
1816                 return -1;
1817     }
1818
1819     h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
1820
1821     h->mb_mbaff = 0;
1822     h->mb_aff_frame = 0;
1823     last_pic_structure = s0->picture_structure;
1824     if(h->sps.frame_mbs_only_flag){
1825         s->picture_structure= PICT_FRAME;
1826     }else{
1827         if(get_bits1(&s->gb)) { //field_pic_flag
1828             s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
1829         } else {
1830             s->picture_structure= PICT_FRAME;
1831             h->mb_aff_frame = h->sps.mb_aff;
1832         }
1833     }
1834     h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
1835
1836     if(h0->current_slice == 0){
1837         while(h->frame_num !=  h->prev_frame_num &&
1838               h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
1839             av_log(NULL, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
1840             if (ff_h264_frame_start(h) < 0)
1841                 return -1;
1842             h->prev_frame_num++;
1843             h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
1844             s->current_picture_ptr->frame_num= h->prev_frame_num;
1845             ff_h264_execute_ref_pic_marking(h, NULL, 0);
1846         }
1847
1848         /* See if we have a decoded first field looking for a pair... */
1849         if (s0->first_field) {
1850             assert(s0->current_picture_ptr);
1851             assert(s0->current_picture_ptr->data[0]);
1852             assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
1853
1854             /* figure out if we have a complementary field pair */
1855             if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
1856                 /*
1857                  * Previous field is unmatched. Don't display it, but let it
1858                  * remain for reference if marked as such.
1859                  */
1860                 s0->current_picture_ptr = NULL;
1861                 s0->first_field = FIELD_PICTURE;
1862
1863             } else {
1864                 if (h->nal_ref_idc &&
1865                         s0->current_picture_ptr->reference &&
1866                         s0->current_picture_ptr->frame_num != h->frame_num) {
1867                     /*
1868                      * This and previous field were reference, but had
1869                      * different frame_nums. Consider this field first in
1870                      * pair. Throw away previous field except for reference
1871                      * purposes.
1872                      */
1873                     s0->first_field = 1;
1874                     s0->current_picture_ptr = NULL;
1875
1876                 } else {
1877                     /* Second field in complementary pair */
1878                     s0->first_field = 0;
1879                 }
1880             }
1881
1882         } else {
1883             /* Frame or first field in a potentially complementary pair */
1884             assert(!s0->current_picture_ptr);
1885             s0->first_field = FIELD_PICTURE;
1886         }
1887
1888         if((!FIELD_PICTURE || s0->first_field) && ff_h264_frame_start(h) < 0) {
1889             s0->first_field = 0;
1890             return -1;
1891         }
1892     }
1893     if(h != h0)
1894         clone_slice(h, h0);
1895
1896     s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
1897
1898     assert(s->mb_num == s->mb_width * s->mb_height);
1899     if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
1900        first_mb_in_slice                    >= s->mb_num){
1901         av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1902         return -1;
1903     }
1904     s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
1905     s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
1906     if (s->picture_structure == PICT_BOTTOM_FIELD)
1907         s->resync_mb_y = s->mb_y = s->mb_y + 1;
1908     assert(s->mb_y < s->mb_height);
1909
1910     if(s->picture_structure==PICT_FRAME){
1911         h->curr_pic_num=   h->frame_num;
1912         h->max_pic_num= 1<< h->sps.log2_max_frame_num;
1913     }else{
1914         h->curr_pic_num= 2*h->frame_num + 1;
1915         h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
1916     }
1917
1918     if(h->nal_unit_type == NAL_IDR_SLICE){
1919         get_ue_golomb(&s->gb); /* idr_pic_id */
1920     }
1921
1922     if(h->sps.poc_type==0){
1923         h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
1924
1925         if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
1926             h->delta_poc_bottom= get_se_golomb(&s->gb);
1927         }
1928     }
1929
1930     if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
1931         h->delta_poc[0]= get_se_golomb(&s->gb);
1932
1933         if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
1934             h->delta_poc[1]= get_se_golomb(&s->gb);
1935     }
1936
1937     init_poc(h);
1938
1939     if(h->pps.redundant_pic_cnt_present){
1940         h->redundant_pic_count= get_ue_golomb(&s->gb);
1941     }
1942
1943     //set defaults, might be overridden a few lines later
1944     h->ref_count[0]= h->pps.ref_count[0];
1945     h->ref_count[1]= h->pps.ref_count[1];
1946
1947     if(h->slice_type_nos != FF_I_TYPE){
1948         if(h->slice_type_nos == FF_B_TYPE){
1949             h->direct_spatial_mv_pred= get_bits1(&s->gb);
1950         }
1951         num_ref_idx_active_override_flag= get_bits1(&s->gb);
1952
1953         if(num_ref_idx_active_override_flag){
1954             h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
1955             if(h->slice_type_nos==FF_B_TYPE)
1956                 h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
1957
1958             if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
1959                 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
1960                 h->ref_count[0]= h->ref_count[1]= 1;
1961                 return -1;
1962             }
1963         }
1964         if(h->slice_type_nos == FF_B_TYPE)
1965             h->list_count= 2;
1966         else
1967             h->list_count= 1;
1968     }else
1969         h->list_count= 0;
1970
1971     if(!default_ref_list_done){
1972         ff_h264_fill_default_ref_list(h);
1973     }
1974
1975     if(h->slice_type_nos!=FF_I_TYPE && ff_h264_decode_ref_pic_list_reordering(h) < 0)
1976         return -1;
1977
1978     if(h->slice_type_nos!=FF_I_TYPE){
1979         s->last_picture_ptr= &h->ref_list[0][0];
1980         ff_copy_picture(&s->last_picture, s->last_picture_ptr);
1981     }
1982     if(h->slice_type_nos==FF_B_TYPE){
1983         s->next_picture_ptr= &h->ref_list[1][0];
1984         ff_copy_picture(&s->next_picture, s->next_picture_ptr);
1985     }
1986
1987     if(   (h->pps.weighted_pred          && h->slice_type_nos == FF_P_TYPE )
1988        ||  (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
1989         pred_weight_table(h);
1990     else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE)
1991         implicit_weight_table(h);
1992     else {
1993         h->use_weight = 0;
1994         for (i = 0; i < 2; i++) {
1995             h->luma_weight_flag[i]   = 0;
1996             h->chroma_weight_flag[i] = 0;
1997         }
1998     }
1999
2000     if(h->nal_ref_idc)
2001         ff_h264_decode_ref_pic_marking(h0, &s->gb);
2002
2003     if(FRAME_MBAFF)
2004         ff_h264_fill_mbaff_ref_list(h);
2005
2006     if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
2007         ff_h264_direct_dist_scale_factor(h);
2008     ff_h264_direct_ref_list_init(h);
2009
2010     if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
2011         tmp = get_ue_golomb_31(&s->gb);
2012         if(tmp > 2){
2013             av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
2014             return -1;
2015         }
2016         h->cabac_init_idc= tmp;
2017     }
2018
2019     h->last_qscale_diff = 0;
2020     tmp = h->pps.init_qp + get_se_golomb(&s->gb);
2021     if(tmp>51){
2022         av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
2023         return -1;
2024     }
2025     s->qscale= tmp;
2026     h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2027     h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2028     //FIXME qscale / qp ... stuff
2029     if(h->slice_type == FF_SP_TYPE){
2030         get_bits1(&s->gb); /* sp_for_switch_flag */
2031     }
2032     if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
2033         get_se_golomb(&s->gb); /* slice_qs_delta */
2034     }
2035
2036     h->deblocking_filter = 1;
2037     h->slice_alpha_c0_offset = 0;
2038     h->slice_beta_offset = 0;
2039     if( h->pps.deblocking_filter_parameters_present ) {
2040         tmp= get_ue_golomb_31(&s->gb);
2041         if(tmp > 2){
2042             av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
2043             return -1;
2044         }
2045         h->deblocking_filter= tmp;
2046         if(h->deblocking_filter < 2)
2047             h->deblocking_filter^= 1; // 1<->0
2048
2049         if( h->deblocking_filter ) {
2050             h->slice_alpha_c0_offset = get_se_golomb(&s->gb) << 1;
2051             h->slice_beta_offset = get_se_golomb(&s->gb) << 1;
2052         }
2053     }
2054
2055     if(   s->avctx->skip_loop_filter >= AVDISCARD_ALL
2056        ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
2057        ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR  && h->slice_type_nos == FF_B_TYPE)
2058        ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2059         h->deblocking_filter= 0;
2060
2061     if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
2062         if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
2063             /* Cheat slightly for speed:
2064                Do not bother to deblock across slices. */
2065             h->deblocking_filter = 2;
2066         } else {
2067             h0->max_contexts = 1;
2068             if(!h0->single_decode_warning) {
2069                 av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
2070                 h0->single_decode_warning = 1;
2071             }
2072             if(h != h0)
2073                 return 1; // deblocking switched inside frame
2074         }
2075     }
2076     h->qp_thresh= 15 - 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]);
2077
2078 #if 0 //FMO
2079     if( h->pps.num_slice_groups > 1  && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
2080         slice_group_change_cycle= get_bits(&s->gb, ?);
2081 #endif
2082
2083     h0->last_slice_type = slice_type;
2084     h->slice_num = ++h0->current_slice;
2085     if(h->slice_num >= MAX_SLICES){
2086         av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
2087     }
2088
2089     for(j=0; j<2; j++){
2090         int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
2091         ref2frm[0]=
2092         ref2frm[1]= -1;
2093         for(i=0; i<16; i++)
2094             ref2frm[i+2]= 4*h->ref_list[j][i].frame_num
2095                           +(h->ref_list[j][i].reference&3);
2096         ref2frm[18+0]=
2097         ref2frm[18+1]= -1;
2098         for(i=16; i<48; i++)
2099             ref2frm[i+4]= 4*h->ref_list[j][i].frame_num
2100                           +(h->ref_list[j][i].reference&3);
2101     }
2102
2103     h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
2104     h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
2105
2106     s->avctx->refs= h->sps.ref_frame_count;
2107
2108     if(s->avctx->debug&FF_DEBUG_PICT_INFO){
2109         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",
2110                h->slice_num,
2111                (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
2112                first_mb_in_slice,
2113                av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
2114                pps_id, h->frame_num,
2115                s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
2116                h->ref_count[0], h->ref_count[1],
2117                s->qscale,
2118                h->deblocking_filter, h->slice_alpha_c0_offset/2, h->slice_beta_offset/2,
2119                h->use_weight,
2120                h->use_weight==1 && h->use_weight_chroma ? "c" : "",
2121                h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
2122                );
2123     }
2124
2125     return 0;
2126 }
2127
2128 int ff_h264_get_slice_type(H264Context *h)
2129 {
2130     switch (h->slice_type) {
2131     case FF_P_TYPE:  return 0;
2132     case FF_B_TYPE:  return 1;
2133     case FF_I_TYPE:  return 2;
2134     case FF_SP_TYPE: return 3;
2135     case FF_SI_TYPE: return 4;
2136     default:         return -1;
2137     }
2138 }
2139
2140 static void loop_filter(H264Context *h){
2141     MpegEncContext * const s = &h->s;
2142     uint8_t  *dest_y, *dest_cb, *dest_cr;
2143     int linesize, uvlinesize, mb_x, mb_y;
2144     const int end_mb_y= s->mb_y + FRAME_MBAFF;
2145     const int old_slice_type= h->slice_type;
2146
2147     if(h->deblocking_filter) {
2148         for(mb_x= 0; mb_x<s->mb_width; mb_x++){
2149             for(mb_y=end_mb_y - FRAME_MBAFF; mb_y<= end_mb_y; mb_y++){
2150                 int list, mb_xy, mb_type, is_complex;
2151                 mb_xy = h->mb_xy = mb_x + mb_y*s->mb_stride;
2152                 h->slice_num= h->slice_table[mb_xy];
2153                 mb_type= s->current_picture.mb_type[mb_xy];
2154                 h->list_count= h->list_counts[mb_xy];
2155                 if(h->list_count==2){
2156                     h->slice_type= h->slice_type_nos= FF_B_TYPE;
2157                 }else if(h->list_count==1){
2158                     h->slice_type= h->slice_type_nos= FF_P_TYPE;
2159                 }else
2160                     h->slice_type= h->slice_type_nos= FF_I_TYPE;
2161
2162                 if(FRAME_MBAFF)
2163                     h->mb_mbaff = h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2164
2165                 is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0; //FIXME qscale might be wrong
2166
2167                 s->mb_x= mb_x;
2168                 s->mb_y= mb_y;
2169                 dest_y  = s->current_picture.data[0] + (mb_x + mb_y * s->linesize  ) * 16;
2170                 dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
2171                 dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
2172                     //FIXME simplify above
2173
2174                 if (MB_FIELD) {
2175                     linesize   = h->mb_linesize   = s->linesize * 2;
2176                     uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2177                     if(mb_y&1){ //FIXME move out of this function?
2178                         dest_y -= s->linesize*15;
2179                         dest_cb-= s->uvlinesize*7;
2180                         dest_cr-= s->uvlinesize*7;
2181                     }
2182                 } else {
2183                     linesize   = h->mb_linesize   = s->linesize;
2184                     uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2185                 }
2186                 backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, !is_complex);
2187                 fill_caches(h, mb_type, 1); //FIXME don't fill stuff which isn't used by filter_mb
2188                 h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2189                 h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2190
2191                 if (is_complex && FRAME_MBAFF) {
2192                     ff_h264_filter_mb     (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2193                 } else {
2194                     ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2195                 }
2196             }
2197         }
2198     }
2199     h->slice_type= old_slice_type;
2200     s->mb_x= 0;
2201     s->mb_y= end_mb_y - FRAME_MBAFF;
2202 }
2203
2204 static int decode_slice(struct AVCodecContext *avctx, void *arg){
2205     H264Context *h = *(void**)arg;
2206     MpegEncContext * const s = &h->s;
2207     const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
2208
2209     s->mb_skip_run= -1;
2210
2211     h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
2212                     (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
2213
2214     if( h->pps.cabac ) {
2215         /* realign */
2216         align_get_bits( &s->gb );
2217
2218         /* init cabac */
2219         ff_init_cabac_states( &h->cabac);
2220         ff_init_cabac_decoder( &h->cabac,
2221                                s->gb.buffer + get_bits_count(&s->gb)/8,
2222                                (get_bits_left(&s->gb) + 7)/8);
2223
2224         ff_h264_init_cabac_states(h);
2225
2226         for(;;){
2227 //START_TIMER
2228             int ret = ff_h264_decode_mb_cabac(h);
2229             int eos;
2230 //STOP_TIMER("decode_mb_cabac")
2231
2232             if(ret>=0) ff_h264_hl_decode_mb(h);
2233
2234             if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
2235                 s->mb_y++;
2236
2237                 ret = ff_h264_decode_mb_cabac(h);
2238
2239                 if(ret>=0) ff_h264_hl_decode_mb(h);
2240                 s->mb_y--;
2241             }
2242             eos = get_cabac_terminate( &h->cabac );
2243
2244             if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
2245                 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);
2246                 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);
2247                 return -1;
2248             }
2249
2250             if( ++s->mb_x >= s->mb_width ) {
2251                 s->mb_x = 0;
2252                 loop_filter(h);
2253                 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2254                 ++s->mb_y;
2255                 if(FIELD_OR_MBAFF_PICTURE) {
2256                     ++s->mb_y;
2257                 }
2258             }
2259
2260             if( eos || s->mb_y >= s->mb_height ) {
2261                 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2262                 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);
2263                 return 0;
2264             }
2265         }
2266
2267     } else {
2268         for(;;){
2269             int ret = ff_h264_decode_mb_cavlc(h);
2270
2271             if(ret>=0) ff_h264_hl_decode_mb(h);
2272
2273             if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
2274                 s->mb_y++;
2275                 ret = ff_h264_decode_mb_cavlc(h);
2276
2277                 if(ret>=0) ff_h264_hl_decode_mb(h);
2278                 s->mb_y--;
2279             }
2280
2281             if(ret<0){
2282                 av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2283                 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);
2284
2285                 return -1;
2286             }
2287
2288             if(++s->mb_x >= s->mb_width){
2289                 s->mb_x=0;
2290                 loop_filter(h);
2291                 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2292                 ++s->mb_y;
2293                 if(FIELD_OR_MBAFF_PICTURE) {
2294                     ++s->mb_y;
2295                 }
2296                 if(s->mb_y >= s->mb_height){
2297                     tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2298
2299                     if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
2300                         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);
2301
2302                         return 0;
2303                     }else{
2304                         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);
2305
2306                         return -1;
2307                     }
2308                 }
2309             }
2310
2311             if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
2312                 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2313                 if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
2314                     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);
2315
2316                     return 0;
2317                 }else{
2318                     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);
2319
2320                     return -1;
2321                 }
2322             }
2323         }
2324     }
2325
2326 #if 0
2327     for(;s->mb_y < s->mb_height; s->mb_y++){
2328         for(;s->mb_x < s->mb_width; s->mb_x++){
2329             int ret= decode_mb(h);
2330
2331             ff_h264_hl_decode_mb(h);
2332
2333             if(ret<0){
2334                 av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2335                 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);
2336
2337                 return -1;
2338             }
2339
2340             if(++s->mb_x >= s->mb_width){
2341                 s->mb_x=0;
2342                 if(++s->mb_y >= s->mb_height){
2343                     if(get_bits_count(s->gb) == s->gb.size_in_bits){
2344                         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);
2345
2346                         return 0;
2347                     }else{
2348                         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);
2349
2350                         return -1;
2351                     }
2352                 }
2353             }
2354
2355             if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
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_ERROR|DC_ERROR|MV_ERROR)&part_mask);
2362
2363                     return -1;
2364                 }
2365             }
2366         }
2367         s->mb_x=0;
2368         ff_draw_horiz_band(s, 16*s->mb_y, 16);
2369     }
2370 #endif
2371     return -1; //not reached
2372 }
2373
2374 /**
2375  * Call decode_slice() for each context.
2376  *
2377  * @param h h264 master context
2378  * @param context_count number of contexts to execute
2379  */
2380 static void execute_decode_slices(H264Context *h, int context_count){
2381     MpegEncContext * const s = &h->s;
2382     AVCodecContext * const avctx= s->avctx;
2383     H264Context *hx;
2384     int i;
2385
2386     if (s->avctx->hwaccel)
2387         return;
2388     if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2389         return;
2390     if(context_count == 1) {
2391         decode_slice(avctx, &h);
2392     } else {
2393         for(i = 1; i < context_count; i++) {
2394             hx = h->thread_context[i];
2395             hx->s.error_recognition = avctx->error_recognition;
2396             hx->s.error_count = 0;
2397         }
2398
2399         avctx->execute(avctx, (void *)decode_slice,
2400                        h->thread_context, NULL, context_count, sizeof(void*));
2401
2402         /* pull back stuff from slices to master context */
2403         hx = h->thread_context[context_count - 1];
2404         s->mb_x = hx->s.mb_x;
2405         s->mb_y = hx->s.mb_y;
2406         s->dropable = hx->s.dropable;
2407         s->picture_structure = hx->s.picture_structure;
2408         for(i = 1; i < context_count; i++)
2409             h->s.error_count += h->thread_context[i]->s.error_count;
2410     }
2411 }
2412
2413
2414 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
2415     MpegEncContext * const s = &h->s;
2416     AVCodecContext * const avctx= s->avctx;
2417     int buf_index=0;
2418     H264Context *hx; ///< thread context
2419     int context_count = 0;
2420     int next_avc= h->is_avc ? 0 : buf_size;
2421
2422     h->max_contexts = avctx->thread_count;
2423 #if 0
2424     int i;
2425     for(i=0; i<50; i++){
2426         av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]);
2427     }
2428 #endif
2429     if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
2430         h->current_slice = 0;
2431         if (!s->first_field)
2432             s->current_picture_ptr= NULL;
2433         ff_h264_reset_sei(h);
2434     }
2435
2436     for(;;){
2437         int consumed;
2438         int dst_length;
2439         int bit_length;
2440         const uint8_t *ptr;
2441         int i, nalsize = 0;
2442         int err;
2443
2444         if(buf_index >= next_avc) {
2445             if(buf_index >= buf_size) break;
2446             nalsize = 0;
2447             for(i = 0; i < h->nal_length_size; i++)
2448                 nalsize = (nalsize << 8) | buf[buf_index++];
2449             if(nalsize <= 1 || nalsize > buf_size - buf_index){
2450                 if(nalsize == 1){
2451                     buf_index++;
2452                     continue;
2453                 }else{
2454                     av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
2455                     break;
2456                 }
2457             }
2458             next_avc= buf_index + nalsize;
2459         } else {
2460             // start code prefix search
2461             for(; buf_index + 3 < next_avc; buf_index++){
2462                 // This should always succeed in the first iteration.
2463                 if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
2464                     break;
2465             }
2466
2467             if(buf_index+3 >= buf_size) break;
2468
2469             buf_index+=3;
2470             if(buf_index >= next_avc) continue;
2471         }
2472
2473         hx = h->thread_context[context_count];
2474
2475         ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, next_avc - buf_index);
2476         if (ptr==NULL || dst_length < 0){
2477             return -1;
2478         }
2479         while(ptr[dst_length - 1] == 0 && dst_length > 0)
2480             dst_length--;
2481         bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
2482
2483         if(s->avctx->debug&FF_DEBUG_STARTCODE){
2484             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);
2485         }
2486
2487         if (h->is_avc && (nalsize != consumed) && nalsize){
2488             av_log(h->s.avctx, AV_LOG_DEBUG, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize);
2489         }
2490
2491         buf_index += consumed;
2492
2493         if(  (s->hurry_up == 1 && h->nal_ref_idc  == 0) //FIXME do not discard SEI id
2494            ||(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc  == 0))
2495             continue;
2496
2497       again:
2498         err = 0;
2499         switch(hx->nal_unit_type){
2500         case NAL_IDR_SLICE:
2501             if (h->nal_unit_type != NAL_IDR_SLICE) {
2502                 av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
2503                 return -1;
2504             }
2505             idr(h); //FIXME ensure we don't loose some frames if there is reordering
2506         case NAL_SLICE:
2507             init_get_bits(&hx->s.gb, ptr, bit_length);
2508             hx->intra_gb_ptr=
2509             hx->inter_gb_ptr= &hx->s.gb;
2510             hx->s.data_partitioning = 0;
2511
2512             if((err = decode_slice_header(hx, h)))
2513                break;
2514
2515             if (s->avctx->hwaccel && h->current_slice == 1) {
2516                 if (s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
2517                     return -1;
2518             }
2519
2520             s->current_picture_ptr->key_frame |=
2521                     (hx->nal_unit_type == NAL_IDR_SLICE) ||
2522                     (h->sei_recovery_frame_cnt >= 0);
2523             if(hx->redundant_pic_count==0 && hx->s.hurry_up < 5
2524                && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2525                && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
2526                && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2527                && avctx->skip_frame < AVDISCARD_ALL){
2528                 if(avctx->hwaccel) {
2529                     if (avctx->hwaccel->decode_slice(avctx, &buf[buf_index - consumed], consumed) < 0)
2530                         return -1;
2531                 }else
2532                 if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
2533                     static const uint8_t start_code[] = {0x00, 0x00, 0x01};
2534                     ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code));
2535                     ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed );
2536                 }else
2537                     context_count++;
2538             }
2539             break;
2540         case NAL_DPA:
2541             init_get_bits(&hx->s.gb, ptr, bit_length);
2542             hx->intra_gb_ptr=
2543             hx->inter_gb_ptr= NULL;
2544
2545             if ((err = decode_slice_header(hx, h)) < 0)
2546                 break;
2547
2548             hx->s.data_partitioning = 1;
2549
2550             break;
2551         case NAL_DPB:
2552             init_get_bits(&hx->intra_gb, ptr, bit_length);
2553             hx->intra_gb_ptr= &hx->intra_gb;
2554             break;
2555         case NAL_DPC:
2556             init_get_bits(&hx->inter_gb, ptr, bit_length);
2557             hx->inter_gb_ptr= &hx->inter_gb;
2558
2559             if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
2560                && s->context_initialized
2561                && s->hurry_up < 5
2562                && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2563                && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
2564                && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2565                && avctx->skip_frame < AVDISCARD_ALL)
2566                 context_count++;
2567             break;
2568         case NAL_SEI:
2569             init_get_bits(&s->gb, ptr, bit_length);
2570             ff_h264_decode_sei(h);
2571             break;
2572         case NAL_SPS:
2573             init_get_bits(&s->gb, ptr, bit_length);
2574             ff_h264_decode_seq_parameter_set(h);
2575
2576             if(s->flags& CODEC_FLAG_LOW_DELAY)
2577                 s->low_delay=1;
2578
2579             if(avctx->has_b_frames < 2)
2580                 avctx->has_b_frames= !s->low_delay;
2581             break;
2582         case NAL_PPS:
2583             init_get_bits(&s->gb, ptr, bit_length);
2584
2585             ff_h264_decode_picture_parameter_set(h, bit_length);
2586
2587             break;
2588         case NAL_AUD:
2589         case NAL_END_SEQUENCE:
2590         case NAL_END_STREAM:
2591         case NAL_FILLER_DATA:
2592         case NAL_SPS_EXT:
2593         case NAL_AUXILIARY_SLICE:
2594             break;
2595         default:
2596             av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", hx->nal_unit_type, bit_length);
2597         }
2598
2599         if(context_count == h->max_contexts) {
2600             execute_decode_slices(h, context_count);
2601             context_count = 0;
2602         }
2603
2604         if (err < 0)
2605             av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
2606         else if(err == 1) {
2607             /* Slice could not be decoded in parallel mode, copy down
2608              * NAL unit stuff to context 0 and restart. Note that
2609              * rbsp_buffer is not transferred, but since we no longer
2610              * run in parallel mode this should not be an issue. */
2611             h->nal_unit_type = hx->nal_unit_type;
2612             h->nal_ref_idc   = hx->nal_ref_idc;
2613             hx = h;
2614             goto again;
2615         }
2616     }
2617     if(context_count)
2618         execute_decode_slices(h, context_count);
2619     return buf_index;
2620 }
2621
2622 /**
2623  * returns the number of bytes consumed for building the current frame
2624  */
2625 static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
2626         if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
2627         if(pos+10>buf_size) pos=buf_size; // oops ;)
2628
2629         return pos;
2630 }
2631
2632 static int decode_frame(AVCodecContext *avctx,
2633                              void *data, int *data_size,
2634                              AVPacket *avpkt)
2635 {
2636     const uint8_t *buf = avpkt->data;
2637     int buf_size = avpkt->size;
2638     H264Context *h = avctx->priv_data;
2639     MpegEncContext *s = &h->s;
2640     AVFrame *pict = data;
2641     int buf_index;
2642
2643     s->flags= avctx->flags;
2644     s->flags2= avctx->flags2;
2645
2646    /* end of stream, output what is still in the buffers */
2647     if (buf_size == 0) {
2648         Picture *out;
2649         int i, out_idx;
2650
2651 //FIXME factorize this with the output code below
2652         out = h->delayed_pic[0];
2653         out_idx = 0;
2654         for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2655             if(h->delayed_pic[i]->poc < out->poc){
2656                 out = h->delayed_pic[i];
2657                 out_idx = i;
2658             }
2659
2660         for(i=out_idx; h->delayed_pic[i]; i++)
2661             h->delayed_pic[i] = h->delayed_pic[i+1];
2662
2663         if(out){
2664             *data_size = sizeof(AVFrame);
2665             *pict= *(AVFrame*)out;
2666         }
2667
2668         return 0;
2669     }
2670
2671     if(h->is_avc && !h->got_avcC) {
2672         int i, cnt, nalsize;
2673         unsigned char *p = avctx->extradata;
2674         if(avctx->extradata_size < 7) {
2675             av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
2676             return -1;
2677         }
2678         if(*p != 1) {
2679             av_log(avctx, AV_LOG_ERROR, "Unknown avcC version %d\n", *p);
2680             return -1;
2681         }
2682         /* sps and pps in the avcC always have length coded with 2 bytes,
2683            so put a fake nal_length_size = 2 while parsing them */
2684         h->nal_length_size = 2;
2685         // Decode sps from avcC
2686         cnt = *(p+5) & 0x1f; // Number of sps
2687         p += 6;
2688         for (i = 0; i < cnt; i++) {
2689             nalsize = AV_RB16(p) + 2;
2690             if(decode_nal_units(h, p, nalsize) < 0) {
2691                 av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
2692                 return -1;
2693             }
2694             p += nalsize;
2695         }
2696         // Decode pps from avcC
2697         cnt = *(p++); // Number of pps
2698         for (i = 0; i < cnt; i++) {
2699             nalsize = AV_RB16(p) + 2;
2700             if(decode_nal_units(h, p, nalsize)  != nalsize) {
2701                 av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
2702                 return -1;
2703             }
2704             p += nalsize;
2705         }
2706         // Now store right nal length size, that will be use to parse all other nals
2707         h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
2708         // Do not reparse avcC
2709         h->got_avcC = 1;
2710     }
2711
2712     if(!h->got_avcC && !h->is_avc && s->avctx->extradata_size){
2713         if(decode_nal_units(h, s->avctx->extradata, s->avctx->extradata_size) < 0)
2714             return -1;
2715         h->got_avcC = 1;
2716     }
2717
2718     buf_index=decode_nal_units(h, buf, buf_size);
2719     if(buf_index < 0)
2720         return -1;
2721
2722     if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
2723         if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0;
2724         av_log(avctx, AV_LOG_ERROR, "no frame!\n");
2725         return -1;
2726     }
2727
2728     if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){
2729         Picture *out = s->current_picture_ptr;
2730         Picture *cur = s->current_picture_ptr;
2731         int i, pics, out_of_order, out_idx;
2732
2733         field_end(h);
2734
2735         if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) {
2736             /* Wait for second field. */
2737             *data_size = 0;
2738
2739         } else {
2740             cur->interlaced_frame = 0;
2741             cur->repeat_pict = 0;
2742
2743             /* Signal interlacing information externally. */
2744             /* Prioritize picture timing SEI information over used decoding process if it exists. */
2745
2746             if(h->sps.pic_struct_present_flag){
2747                 switch (h->sei_pic_struct)
2748                 {
2749                 case SEI_PIC_STRUCT_FRAME:
2750                     break;
2751                 case SEI_PIC_STRUCT_TOP_FIELD:
2752                 case SEI_PIC_STRUCT_BOTTOM_FIELD:
2753                     cur->interlaced_frame = 1;
2754                     break;
2755                 case SEI_PIC_STRUCT_TOP_BOTTOM:
2756                 case SEI_PIC_STRUCT_BOTTOM_TOP:
2757                     if (FIELD_OR_MBAFF_PICTURE)
2758                         cur->interlaced_frame = 1;
2759                     else
2760                         // try to flag soft telecine progressive
2761                         cur->interlaced_frame = h->prev_interlaced_frame;
2762                     break;
2763                 case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
2764                 case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
2765                     // Signal the possibility of telecined film externally (pic_struct 5,6)
2766                     // From these hints, let the applications decide if they apply deinterlacing.
2767                     cur->repeat_pict = 1;
2768                     break;
2769                 case SEI_PIC_STRUCT_FRAME_DOUBLING:
2770                     // Force progressive here, as doubling interlaced frame is a bad idea.
2771                     cur->repeat_pict = 2;
2772                     break;
2773                 case SEI_PIC_STRUCT_FRAME_TRIPLING:
2774                     cur->repeat_pict = 4;
2775                     break;
2776                 }
2777
2778                 if ((h->sei_ct_type & 3) && h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
2779                     cur->interlaced_frame = (h->sei_ct_type & (1<<1)) != 0;
2780             }else{
2781                 /* Derive interlacing flag from used decoding process. */
2782                 cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE;
2783             }
2784             h->prev_interlaced_frame = cur->interlaced_frame;
2785
2786             if (cur->field_poc[0] != cur->field_poc[1]){
2787                 /* Derive top_field_first from field pocs. */
2788                 cur->top_field_first = cur->field_poc[0] < cur->field_poc[1];
2789             }else{
2790                 if(cur->interlaced_frame || h->sps.pic_struct_present_flag){
2791                     /* Use picture timing SEI information. Even if it is a information of a past frame, better than nothing. */
2792                     if(h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM
2793                       || h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
2794                         cur->top_field_first = 1;
2795                     else
2796                         cur->top_field_first = 0;
2797                 }else{
2798                     /* Most likely progressive */
2799                     cur->top_field_first = 0;
2800                 }
2801             }
2802
2803         //FIXME do something with unavailable reference frames
2804
2805             /* Sort B-frames into display order */
2806
2807             if(h->sps.bitstream_restriction_flag
2808                && s->avctx->has_b_frames < h->sps.num_reorder_frames){
2809                 s->avctx->has_b_frames = h->sps.num_reorder_frames;
2810                 s->low_delay = 0;
2811             }
2812
2813             if(   s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT
2814                && !h->sps.bitstream_restriction_flag){
2815                 s->avctx->has_b_frames= MAX_DELAYED_PIC_COUNT;
2816                 s->low_delay= 0;
2817             }
2818
2819             pics = 0;
2820             while(h->delayed_pic[pics]) pics++;
2821
2822             assert(pics <= MAX_DELAYED_PIC_COUNT);
2823
2824             h->delayed_pic[pics++] = cur;
2825             if(cur->reference == 0)
2826                 cur->reference = DELAYED_PIC_REF;
2827
2828             out = h->delayed_pic[0];
2829             out_idx = 0;
2830             for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2831                 if(h->delayed_pic[i]->poc < out->poc){
2832                     out = h->delayed_pic[i];
2833                     out_idx = i;
2834                 }
2835             if(s->avctx->has_b_frames == 0 && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset))
2836                 h->outputed_poc= INT_MIN;
2837             out_of_order = out->poc < h->outputed_poc;
2838
2839             if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames)
2840                 { }
2841             else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT)
2842                || (s->low_delay &&
2843                 ((h->outputed_poc != INT_MIN && out->poc > h->outputed_poc + 2)
2844                  || cur->pict_type == FF_B_TYPE)))
2845             {
2846                 s->low_delay = 0;
2847                 s->avctx->has_b_frames++;
2848             }
2849
2850             if(out_of_order || pics > s->avctx->has_b_frames){
2851                 out->reference &= ~DELAYED_PIC_REF;
2852                 for(i=out_idx; h->delayed_pic[i]; i++)
2853                     h->delayed_pic[i] = h->delayed_pic[i+1];
2854             }
2855             if(!out_of_order && pics > s->avctx->has_b_frames){
2856                 *data_size = sizeof(AVFrame);
2857
2858                 if(out_idx==0 && h->delayed_pic[0] && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) {
2859                     h->outputed_poc = INT_MIN;
2860                 } else
2861                     h->outputed_poc = out->poc;
2862                 *pict= *(AVFrame*)out;
2863             }else{
2864                 av_log(avctx, AV_LOG_DEBUG, "no picture\n");
2865             }
2866         }
2867     }
2868
2869     assert(pict->data[0] || !*data_size);
2870     ff_print_debug_info(s, pict);
2871 //printf("out %d\n", (int)pict->data[0]);
2872
2873     return get_consumed_bytes(s, buf_index, buf_size);
2874 }
2875 #if 0
2876 static inline void fill_mb_avail(H264Context *h){
2877     MpegEncContext * const s = &h->s;
2878     const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2879
2880     if(s->mb_y){
2881         h->mb_avail[0]= s->mb_x                 && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num;
2882         h->mb_avail[1]=                            h->slice_table[mb_xy - s->mb_stride    ] == h->slice_num;
2883         h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num;
2884     }else{
2885         h->mb_avail[0]=
2886         h->mb_avail[1]=
2887         h->mb_avail[2]= 0;
2888     }
2889     h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num;
2890     h->mb_avail[4]= 1; //FIXME move out
2891     h->mb_avail[5]= 0; //FIXME move out
2892 }
2893 #endif
2894
2895 #ifdef TEST
2896 #undef printf
2897 #undef random
2898 #define COUNT 8000
2899 #define SIZE (COUNT*40)
2900 int main(void){
2901     int i;
2902     uint8_t temp[SIZE];
2903     PutBitContext pb;
2904     GetBitContext gb;
2905 //    int int_temp[10000];
2906     DSPContext dsp;
2907     AVCodecContext avctx;
2908
2909     dsputil_init(&dsp, &avctx);
2910
2911     init_put_bits(&pb, temp, SIZE);
2912     printf("testing unsigned exp golomb\n");
2913     for(i=0; i<COUNT; i++){
2914         START_TIMER
2915         set_ue_golomb(&pb, i);
2916         STOP_TIMER("set_ue_golomb");
2917     }
2918     flush_put_bits(&pb);
2919
2920     init_get_bits(&gb, temp, 8*SIZE);
2921     for(i=0; i<COUNT; i++){
2922         int j, s;
2923
2924         s= show_bits(&gb, 24);
2925
2926         START_TIMER
2927         j= get_ue_golomb(&gb);
2928         if(j != i){
2929             printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
2930 //            return -1;
2931         }
2932         STOP_TIMER("get_ue_golomb");
2933     }
2934
2935
2936     init_put_bits(&pb, temp, SIZE);
2937     printf("testing signed exp golomb\n");
2938     for(i=0; i<COUNT; i++){
2939         START_TIMER
2940         set_se_golomb(&pb, i - COUNT/2);
2941         STOP_TIMER("set_se_golomb");
2942     }
2943     flush_put_bits(&pb);
2944
2945     init_get_bits(&gb, temp, 8*SIZE);
2946     for(i=0; i<COUNT; i++){
2947         int j, s;
2948
2949         s= show_bits(&gb, 24);
2950
2951         START_TIMER
2952         j= get_se_golomb(&gb);
2953         if(j != i - COUNT/2){
2954             printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
2955 //            return -1;
2956         }
2957         STOP_TIMER("get_se_golomb");
2958     }
2959
2960 #if 0
2961     printf("testing 4x4 (I)DCT\n");
2962
2963     DCTELEM block[16];
2964     uint8_t src[16], ref[16];
2965     uint64_t error= 0, max_error=0;
2966
2967     for(i=0; i<COUNT; i++){
2968         int j;
2969 //        printf("%d %d %d\n", r1, r2, (r2-r1)*16);
2970         for(j=0; j<16; j++){
2971             ref[j]= random()%255;
2972             src[j]= random()%255;
2973         }
2974
2975         h264_diff_dct_c(block, src, ref, 4);
2976
2977         //normalize
2978         for(j=0; j<16; j++){
2979 //            printf("%d ", block[j]);
2980             block[j]= block[j]*4;
2981             if(j&1) block[j]= (block[j]*4 + 2)/5;
2982             if(j&4) block[j]= (block[j]*4 + 2)/5;
2983         }
2984 //        printf("\n");
2985
2986         s->dsp.h264_idct_add(ref, block, 4);
2987 /*        for(j=0; j<16; j++){
2988             printf("%d ", ref[j]);
2989         }
2990         printf("\n");*/
2991
2992         for(j=0; j<16; j++){
2993             int diff= FFABS(src[j] - ref[j]);
2994
2995             error+= diff*diff;
2996             max_error= FFMAX(max_error, diff);
2997         }
2998     }
2999     printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
3000     printf("testing quantizer\n");
3001     for(qp=0; qp<52; qp++){
3002         for(i=0; i<16; i++)
3003             src1_block[i]= src2_block[i]= random()%255;
3004
3005     }
3006     printf("Testing NAL layer\n");
3007
3008     uint8_t bitstream[COUNT];
3009     uint8_t nal[COUNT*2];
3010     H264Context h;
3011     memset(&h, 0, sizeof(H264Context));
3012
3013     for(i=0; i<COUNT; i++){
3014         int zeros= i;
3015         int nal_length;
3016         int consumed;
3017         int out_length;
3018         uint8_t *out;
3019         int j;
3020
3021         for(j=0; j<COUNT; j++){
3022             bitstream[j]= (random() % 255) + 1;
3023         }
3024
3025         for(j=0; j<zeros; j++){
3026             int pos= random() % COUNT;
3027             while(bitstream[pos] == 0){
3028                 pos++;
3029                 pos %= COUNT;
3030             }
3031             bitstream[pos]=0;
3032         }
3033
3034         START_TIMER
3035
3036         nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
3037         if(nal_length<0){
3038             printf("encoding failed\n");
3039             return -1;
3040         }
3041
3042         out= ff_h264_decode_nal(&h, nal, &out_length, &consumed, nal_length);
3043
3044         STOP_TIMER("NAL")
3045
3046         if(out_length != COUNT){
3047             printf("incorrect length %d %d\n", out_length, COUNT);
3048             return -1;
3049         }
3050
3051         if(consumed != nal_length){
3052             printf("incorrect consumed length %d %d\n", nal_length, consumed);
3053             return -1;
3054         }
3055
3056         if(memcmp(bitstream, out, COUNT)){
3057             printf("mismatch\n");
3058             return -1;
3059         }
3060     }
3061 #endif
3062
3063     printf("Testing RBSP\n");
3064
3065
3066     return 0;
3067 }
3068 #endif /* TEST */
3069
3070
3071 av_cold void ff_h264_free_context(H264Context *h)
3072 {
3073     int i;
3074
3075     free_tables(h); //FIXME cleanup init stuff perhaps
3076
3077     for(i = 0; i < MAX_SPS_COUNT; i++)
3078         av_freep(h->sps_buffers + i);
3079
3080     for(i = 0; i < MAX_PPS_COUNT; i++)
3081         av_freep(h->pps_buffers + i);
3082 }
3083
3084 av_cold int ff_h264_decode_end(AVCodecContext *avctx)
3085 {
3086     H264Context *h = avctx->priv_data;
3087     MpegEncContext *s = &h->s;
3088
3089     ff_h264_free_context(h);
3090
3091     MPV_common_end(s);
3092
3093 //    memset(h, 0, sizeof(H264Context));
3094
3095     return 0;
3096 }
3097
3098
3099 AVCodec h264_decoder = {
3100     "h264",
3101     CODEC_TYPE_VIDEO,
3102     CODEC_ID_H264,
3103     sizeof(H264Context),
3104     ff_h264_decode_init,
3105     NULL,
3106     ff_h264_decode_end,
3107     decode_frame,
3108     /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_DELAY,
3109     .flush= flush_dpb,
3110     .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
3111     .pix_fmts= ff_hwaccel_pixfmt_list_420,
3112 };
3113
3114 #if CONFIG_H264_VDPAU_DECODER
3115 AVCodec h264_vdpau_decoder = {
3116     "h264_vdpau",
3117     CODEC_TYPE_VIDEO,
3118     CODEC_ID_H264,
3119     sizeof(H264Context),
3120     ff_h264_decode_init,
3121     NULL,
3122     ff_h264_decode_end,
3123     decode_frame,
3124     CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
3125     .flush= flush_dpb,
3126     .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
3127     .pix_fmts = (const enum PixelFormat[]){PIX_FMT_VDPAU_H264, PIX_FMT_NONE},
3128 };
3129 #endif