2 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * H.264 / AVC / MPEG4 part10 codec.
24 * @author Michael Niedermayer <michaelni@gmx.at>
30 #include "mpegvideo.h"
37 #define interlaced_dct interlaced_dct_is_a_bad_name
38 #define mb_intra mb_intra_isnt_initalized_see_mb_type
40 #define LUMA_DC_BLOCK_INDEX 25
41 #define CHROMA_DC_BLOCK_INDEX 26
43 #define CHROMA_DC_COEFF_TOKEN_VLC_BITS 8
44 #define COEFF_TOKEN_VLC_BITS 8
45 #define TOTAL_ZEROS_VLC_BITS 9
46 #define CHROMA_DC_TOTAL_ZEROS_VLC_BITS 3
47 #define RUN_VLC_BITS 3
48 #define RUN7_VLC_BITS 6
50 #define MAX_SPS_COUNT 32
51 #define MAX_PPS_COUNT 256
53 #define MAX_MMCO_COUNT 66
56 * Sequence parameter set
62 int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4
63 int poc_type; ///< pic_order_cnt_type
64 int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4
65 int delta_pic_order_always_zero_flag;
66 int offset_for_non_ref_pic;
67 int offset_for_top_to_bottom_field;
68 int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle
69 int ref_frame_count; ///< num_ref_frames
70 int gaps_in_frame_num_allowed_flag;
71 int mb_width; ///< frame_width_in_mbs_minus1 + 1
72 int mb_height; ///< frame_height_in_mbs_minus1 + 1
73 int frame_mbs_only_flag;
74 int mb_aff; ///<mb_adaptive_frame_field_flag
75 int direct_8x8_inference_flag;
76 int crop; ///< frame_cropping_flag
77 int crop_left; ///< frame_cropping_rect_left_offset
78 int crop_right; ///< frame_cropping_rect_right_offset
79 int crop_top; ///< frame_cropping_rect_top_offset
80 int crop_bottom; ///< frame_cropping_rect_bottom_offset
81 int vui_parameters_present_flag;
84 short offset_for_ref_frame[256]; //FIXME dyn aloc?
88 * Picture parameter set
92 int cabac; ///< entropy_coding_mode_flag
93 int pic_order_present; ///< pic_order_present_flag
94 int slice_group_count; ///< num_slice_groups_minus1 + 1
95 int mb_slice_group_map_type;
96 int ref_count[2]; ///< num_ref_idx_l0/1_active_minus1 + 1
97 int weighted_pred; ///< weighted_pred_flag
98 int weighted_bipred_idc;
99 int init_qp; ///< pic_init_qp_minus26 + 26
100 int init_qs; ///< pic_init_qs_minus26 + 26
101 int chroma_qp_index_offset;
102 int deblocking_filter_parameters_present; ///< deblocking_filter_parameters_present_flag
103 int constrained_intra_pred; ///< constrained_intra_pred_flag
104 int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag
108 * Memory management control operation opcode.
110 typedef enum MMCOOpcode{
121 * Memory management control operation.
132 typedef struct H264Context{
140 #define NAL_IDR_SLICE 5
144 #define NAL_PICTURE_DELIMITER 9
145 #define NAL_FILTER_DATA 10
146 uint8_t *rbsp_buffer;
147 int rbsp_buffer_size;
151 int prev_mb_skiped; //FIXME remove (IMHO not used)
154 int chroma_pred_mode;
155 int intra16x16_pred_mode;
157 int8_t intra4x4_pred_mode_cache[5*8];
158 int8_t (*intra4x4_pred_mode)[8];
159 void (*pred4x4 [9+3])(uint8_t *src, uint8_t *topright, int stride);//FIXME move to dsp?
160 void (*pred8x8 [4+3])(uint8_t *src, int stride);
161 void (*pred16x16[4+3])(uint8_t *src, int stride);
162 unsigned int topleft_samples_available;
163 unsigned int top_samples_available;
164 unsigned int topright_samples_available;
165 unsigned int left_samples_available;
168 * non zero coeff count cache.
169 * is 64 if not available.
171 uint8_t non_zero_count_cache[6*8];
172 uint8_t (*non_zero_count)[16];
175 * Motion vector cache.
177 int16_t mv_cache[2][5*8][2];
178 int8_t ref_cache[2][5*8];
179 #define LIST_NOT_USED -1 //FIXME rename?
180 #define PART_NOT_AVAILABLE -2
183 * is 1 if the specific list MV&references are set to 0,0,-2.
185 int mv_cache_clean[2];
187 int block_offset[16+8];
188 int chroma_subblock_offset[16]; //FIXME remove
190 uint16_t *mb2b_xy; //FIXME are these 4 a good idea?
198 int unknown_svq3_flag;
199 int next_slice_index;
201 SPS sps_buffer[MAX_SPS_COUNT];
202 SPS sps; ///< current sps
204 PPS pps_buffer[MAX_PPS_COUNT];
208 PPS pps; //FIXME move tp Picture perhaps? (->no) do we need that?
211 uint8_t *slice_table_base;
212 uint8_t *slice_table; ///< slice_table_base + mb_stride + 1
214 int slice_type_fixed;
216 //interlacing specific flags
217 int mb_field_decoding_flag;
224 int delta_poc_bottom;
227 int prev_poc_msb; ///< poc_msb of the last reference pic for POC type 0
228 int prev_poc_lsb; ///< poc_lsb of the last reference pic for POC type 0
229 int frame_num_offset; ///< for POC type 2
230 int prev_frame_num_offset; ///< for POC type 2
231 int prev_frame_num; ///< frame_num of the last pic for POC type 1/2
234 * frame_num for frames or 2*frame_num for field pics.
239 * max_frame_num or 2*max_frame_num for field pics.
243 //Weighted pred stuff
244 int luma_log2_weight_denom;
245 int chroma_log2_weight_denom;
246 int luma_weight[2][16];
247 int luma_offset[2][16];
248 int chroma_weight[2][16][2];
249 int chroma_offset[2][16][2];
252 int disable_deblocking_filter_idc;
253 int slice_alpha_c0_offset_div2;
254 int slice_beta_offset_div2;
256 int redundant_pic_count;
258 int direct_spatial_mv_pred;
261 * num_ref_idx_l0/1_active_minus1 + 1
263 int ref_count[2];// FIXME split for AFF
264 Picture *short_ref[16];
265 Picture *long_ref[16];
266 Picture default_ref_list[2][32];
267 Picture ref_list[2][32]; //FIXME size?
268 Picture field_ref_list[2][32]; //FIXME size?
271 * memory management control operations buffer.
273 MMCO mmco[MAX_MMCO_COUNT];
276 int long_ref_count; ///< number of actual long term references
277 int short_ref_count; ///< number of actual short term references
280 GetBitContext intra_gb;
281 GetBitContext inter_gb;
282 GetBitContext *intra_gb_ptr;
283 GetBitContext *inter_gb_ptr;
285 DCTELEM mb[16*24] __align8;
288 static VLC coeff_token_vlc[4];
289 static VLC chroma_dc_coeff_token_vlc;
291 static VLC total_zeros_vlc[15];
292 static VLC chroma_dc_total_zeros_vlc[3];
294 static VLC run_vlc[6];
297 static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp);
298 static void svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp, int dc);
300 static inline uint32_t pack16to32(int a, int b){
301 #ifdef WORDS_BIGENDIAN
302 return (b&0xFFFF) + (a<<16);
304 return (a&0xFFFF) + (b<<16);
310 * @param h height of the recatangle, should be a constant
311 * @param w width of the recatangle, should be a constant
312 * @param size the size of val (1 or 4), should be a constant
314 static inline void fill_rectangle(void *vp, int w, int h, int stride, uint32_t val, int size){ //FIXME ensure this IS inlined
315 uint8_t *p= (uint8_t*)vp;
316 assert(size==1 || size==4);
321 //FIXME check what gcc generates for 64 bit on x86 and possible write a 32 bit ver of it
324 *(uint16_t*)(p + stride)= size==4 ? val : val*0x0101;
325 }else if(w==2 && h==4){
326 *(uint16_t*)(p + 0*stride)=
327 *(uint16_t*)(p + 1*stride)=
328 *(uint16_t*)(p + 2*stride)=
329 *(uint16_t*)(p + 3*stride)= size==4 ? val : val*0x0101;
330 }else if(w==4 && h==1){
331 *(uint32_t*)(p + 0*stride)= size==4 ? val : val*0x01010101;
332 }else if(w==4 && h==2){
333 *(uint32_t*)(p + 0*stride)=
334 *(uint32_t*)(p + 1*stride)= size==4 ? val : val*0x01010101;
335 }else if(w==4 && h==4){
336 *(uint32_t*)(p + 0*stride)=
337 *(uint32_t*)(p + 1*stride)=
338 *(uint32_t*)(p + 2*stride)=
339 *(uint32_t*)(p + 3*stride)= size==4 ? val : val*0x01010101;
340 }else if(w==8 && h==1){
342 *(uint32_t*)(p + 4)= size==4 ? val : val*0x01010101;
343 }else if(w==8 && h==2){
344 *(uint32_t*)(p + 0 + 0*stride)=
345 *(uint32_t*)(p + 4 + 0*stride)=
346 *(uint32_t*)(p + 0 + 1*stride)=
347 *(uint32_t*)(p + 4 + 1*stride)= size==4 ? val : val*0x01010101;
348 }else if(w==8 && h==4){
349 *(uint64_t*)(p + 0*stride)=
350 *(uint64_t*)(p + 1*stride)=
351 *(uint64_t*)(p + 2*stride)=
352 *(uint64_t*)(p + 3*stride)= size==4 ? val*0x0100000001ULL : val*0x0101010101010101ULL;
353 }else if(w==16 && h==2){
354 *(uint64_t*)(p + 0+0*stride)=
355 *(uint64_t*)(p + 8+0*stride)=
356 *(uint64_t*)(p + 0+1*stride)=
357 *(uint64_t*)(p + 8+1*stride)= size==4 ? val*0x0100000001ULL : val*0x0101010101010101ULL;
358 }else if(w==16 && h==4){
359 *(uint64_t*)(p + 0+0*stride)=
360 *(uint64_t*)(p + 8+0*stride)=
361 *(uint64_t*)(p + 0+1*stride)=
362 *(uint64_t*)(p + 8+1*stride)=
363 *(uint64_t*)(p + 0+2*stride)=
364 *(uint64_t*)(p + 8+2*stride)=
365 *(uint64_t*)(p + 0+3*stride)=
366 *(uint64_t*)(p + 8+3*stride)= size==4 ? val*0x0100000001ULL : val*0x0101010101010101ULL;
371 static inline void fill_caches(H264Context *h, int mb_type){
372 MpegEncContext * const s = &h->s;
373 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
374 int topleft_xy, top_xy, topright_xy, left_xy[2];
375 int topleft_type, top_type, topright_type, left_type[2];
379 //wow what a mess, why didnt they simplify the interlacing&intra stuff, i cant imagine that these complex rules are worth it
384 topleft_xy = mb_xy-1 - s->mb_stride;
385 top_xy = mb_xy - s->mb_stride;
386 topright_xy= mb_xy+1 - s->mb_stride;
387 left_xy[0] = mb_xy-1;
388 left_xy[1] = mb_xy-1;
395 topleft_type = h->slice_table[topleft_xy ] == h->slice_num ? s->current_picture.mb_type[topleft_xy] : 0;
396 top_type = h->slice_table[top_xy ] == h->slice_num ? s->current_picture.mb_type[top_xy] : 0;
397 topright_type= h->slice_table[topright_xy] == h->slice_num ? s->current_picture.mb_type[topright_xy]: 0;
398 left_type[0] = h->slice_table[left_xy[0] ] == h->slice_num ? s->current_picture.mb_type[left_xy[0]] : 0;
399 left_type[1] = h->slice_table[left_xy[1] ] == h->slice_num ? s->current_picture.mb_type[left_xy[1]] : 0;
401 if(IS_INTRA(mb_type)){
402 h->topleft_samples_available=
403 h->top_samples_available=
404 h->left_samples_available= 0xFFFF;
405 h->topright_samples_available= 0xEEEA;
407 if(!IS_INTRA(top_type) && (top_type==0 || h->pps.constrained_intra_pred)){
408 h->topleft_samples_available= 0xB3FF;
409 h->top_samples_available= 0x33FF;
410 h->topright_samples_available= 0x26EA;
413 if(!IS_INTRA(left_type[i]) && (left_type[i]==0 || h->pps.constrained_intra_pred)){
414 h->topleft_samples_available&= 0xDF5F;
415 h->left_samples_available&= 0x5F5F;
419 if(!IS_INTRA(topleft_type) && (topleft_type==0 || h->pps.constrained_intra_pred))
420 h->topleft_samples_available&= 0x7FFF;
422 if(!IS_INTRA(topright_type) && (topright_type==0 || h->pps.constrained_intra_pred))
423 h->topright_samples_available&= 0xFBFF;
425 if(IS_INTRA4x4(mb_type)){
426 if(IS_INTRA4x4(top_type)){
427 h->intra4x4_pred_mode_cache[4+8*0]= h->intra4x4_pred_mode[top_xy][4];
428 h->intra4x4_pred_mode_cache[5+8*0]= h->intra4x4_pred_mode[top_xy][5];
429 h->intra4x4_pred_mode_cache[6+8*0]= h->intra4x4_pred_mode[top_xy][6];
430 h->intra4x4_pred_mode_cache[7+8*0]= h->intra4x4_pred_mode[top_xy][3];
433 if(IS_INTRA16x16(top_type) || (IS_INTER(top_type) && !h->pps.constrained_intra_pred))
438 h->intra4x4_pred_mode_cache[4+8*0]=
439 h->intra4x4_pred_mode_cache[5+8*0]=
440 h->intra4x4_pred_mode_cache[6+8*0]=
441 h->intra4x4_pred_mode_cache[7+8*0]= pred;
444 if(IS_INTRA4x4(left_type[i])){
445 h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[0+2*i]];
446 h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[1+2*i]];
449 if(IS_INTRA16x16(left_type[i]) || (IS_INTER(left_type[i]) && !h->pps.constrained_intra_pred))
454 h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
455 h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= pred;
470 //FIXME constraint_intra_pred & partitioning & nnz (lets hope this is just a typo in the spec)
472 h->non_zero_count_cache[4+8*0]= h->non_zero_count[top_xy][0];
473 h->non_zero_count_cache[5+8*0]= h->non_zero_count[top_xy][1];
474 h->non_zero_count_cache[6+8*0]= h->non_zero_count[top_xy][2];
475 h->non_zero_count_cache[7+8*0]= h->non_zero_count[top_xy][3];
477 h->non_zero_count_cache[1+8*0]= h->non_zero_count[top_xy][7];
478 h->non_zero_count_cache[2+8*0]= h->non_zero_count[top_xy][8];
480 h->non_zero_count_cache[1+8*3]= h->non_zero_count[top_xy][10];
481 h->non_zero_count_cache[2+8*3]= h->non_zero_count[top_xy][11];
483 h->non_zero_count_cache[4+8*0]=
484 h->non_zero_count_cache[5+8*0]=
485 h->non_zero_count_cache[6+8*0]=
486 h->non_zero_count_cache[7+8*0]=
488 h->non_zero_count_cache[1+8*0]=
489 h->non_zero_count_cache[2+8*0]=
491 h->non_zero_count_cache[1+8*3]=
492 h->non_zero_count_cache[2+8*3]= 64;
496 h->non_zero_count_cache[3+8*1]= h->non_zero_count[left_xy[0]][6];
497 h->non_zero_count_cache[3+8*2]= h->non_zero_count[left_xy[0]][5];
498 h->non_zero_count_cache[0+8*1]= h->non_zero_count[left_xy[0]][9]; //FIXME left_block
499 h->non_zero_count_cache[0+8*4]= h->non_zero_count[left_xy[0]][12];
501 h->non_zero_count_cache[3+8*1]=
502 h->non_zero_count_cache[3+8*2]=
503 h->non_zero_count_cache[0+8*1]=
504 h->non_zero_count_cache[0+8*4]= 64;
508 h->non_zero_count_cache[3+8*3]= h->non_zero_count[left_xy[1]][4];
509 h->non_zero_count_cache[3+8*4]= h->non_zero_count[left_xy[1]][3];
510 h->non_zero_count_cache[0+8*2]= h->non_zero_count[left_xy[1]][8];
511 h->non_zero_count_cache[0+8*5]= h->non_zero_count[left_xy[1]][11];
513 h->non_zero_count_cache[3+8*3]=
514 h->non_zero_count_cache[3+8*4]=
515 h->non_zero_count_cache[0+8*2]=
516 h->non_zero_count_cache[0+8*5]= 64;
520 if(IS_INTER(mb_type)){
522 for(list=0; list<2; list++){
523 if((!IS_8X8(mb_type)) && !USES_LIST(mb_type, list)){
524 /*if(!h->mv_cache_clean[list]){
525 memset(h->mv_cache [list], 0, 8*5*2*sizeof(int16_t)); //FIXME clean only input? clean at all?
526 memset(h->ref_cache[list], PART_NOT_AVAILABLE, 8*5*sizeof(int8_t));
527 h->mv_cache_clean[list]= 1;
529 continue; //FIXME direct mode ...
531 h->mv_cache_clean[list]= 0;
533 if(IS_INTER(topleft_type)){
534 const int b_xy = h->mb2b_xy[topleft_xy] + 3 + 3*h->b_stride;
535 const int b8_xy= h->mb2b8_xy[topleft_xy] + 1 + h->b8_stride;
536 *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
537 h->ref_cache[list][scan8[0] - 1 - 1*8]= s->current_picture.ref_index[list][b8_xy];
539 *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= 0;
540 h->ref_cache[list][scan8[0] - 1 - 1*8]= topleft_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
543 if(IS_INTER(top_type)){
544 const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
545 const int b8_xy= h->mb2b8_xy[top_xy] + h->b8_stride;
546 *(uint32_t*)h->mv_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 0];
547 *(uint32_t*)h->mv_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 1];
548 *(uint32_t*)h->mv_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 2];
549 *(uint32_t*)h->mv_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 3];
550 h->ref_cache[list][scan8[0] + 0 - 1*8]=
551 h->ref_cache[list][scan8[0] + 1 - 1*8]= s->current_picture.ref_index[list][b8_xy + 0];
552 h->ref_cache[list][scan8[0] + 2 - 1*8]=
553 h->ref_cache[list][scan8[0] + 3 - 1*8]= s->current_picture.ref_index[list][b8_xy + 1];
555 *(uint32_t*)h->mv_cache [list][scan8[0] + 0 - 1*8]=
556 *(uint32_t*)h->mv_cache [list][scan8[0] + 1 - 1*8]=
557 *(uint32_t*)h->mv_cache [list][scan8[0] + 2 - 1*8]=
558 *(uint32_t*)h->mv_cache [list][scan8[0] + 3 - 1*8]= 0;
559 *(uint32_t*)&h->ref_cache[list][scan8[0] + 0 - 1*8]= ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101;
562 if(IS_INTER(topright_type)){
563 const int b_xy= h->mb2b_xy[topright_xy] + 3*h->b_stride;
564 const int b8_xy= h->mb2b8_xy[topright_xy] + h->b8_stride;
565 *(uint32_t*)h->mv_cache[list][scan8[0] + 4 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
566 h->ref_cache[list][scan8[0] + 4 - 1*8]= s->current_picture.ref_index[list][b8_xy];
568 *(uint32_t*)h->mv_cache [list][scan8[0] + 4 - 1*8]= 0;
569 h->ref_cache[list][scan8[0] + 4 - 1*8]= topright_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
572 //FIXME unify cleanup or sth
573 if(IS_INTER(left_type[0])){
574 const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
575 const int b8_xy= h->mb2b8_xy[left_xy[0]] + 1;
576 *(uint32_t*)h->mv_cache[list][scan8[0] - 1 + 0*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[0]];
577 *(uint32_t*)h->mv_cache[list][scan8[0] - 1 + 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[1]];
578 h->ref_cache[list][scan8[0] - 1 + 0*8]=
579 h->ref_cache[list][scan8[0] - 1 + 1*8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[0]>>1)];
581 *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 0*8]=
582 *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 1*8]= 0;
583 h->ref_cache[list][scan8[0] - 1 + 0*8]=
584 h->ref_cache[list][scan8[0] - 1 + 1*8]= left_type[0] ? LIST_NOT_USED : PART_NOT_AVAILABLE;
587 if(IS_INTER(left_type[1])){
588 const int b_xy= h->mb2b_xy[left_xy[1]] + 3;
589 const int b8_xy= h->mb2b8_xy[left_xy[1]] + 1;
590 *(uint32_t*)h->mv_cache[list][scan8[0] - 1 + 2*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[2]];
591 *(uint32_t*)h->mv_cache[list][scan8[0] - 1 + 3*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[3]];
592 h->ref_cache[list][scan8[0] - 1 + 2*8]=
593 h->ref_cache[list][scan8[0] - 1 + 3*8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[2]>>1)];
595 *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 2*8]=
596 *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 3*8]= 0;
597 h->ref_cache[list][scan8[0] - 1 + 2*8]=
598 h->ref_cache[list][scan8[0] - 1 + 3*8]= left_type[0] ? LIST_NOT_USED : PART_NOT_AVAILABLE;
601 h->ref_cache[list][scan8[5 ]+1] =
602 h->ref_cache[list][scan8[7 ]+1] =
603 h->ref_cache[list][scan8[13]+1] = //FIXME remove past 3 (init somewher else)
604 h->ref_cache[list][scan8[4 ]] =
605 h->ref_cache[list][scan8[12]] = PART_NOT_AVAILABLE;
606 *(uint32_t*)h->mv_cache [list][scan8[5 ]+1]=
607 *(uint32_t*)h->mv_cache [list][scan8[7 ]+1]=
608 *(uint32_t*)h->mv_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewher else)
609 *(uint32_t*)h->mv_cache [list][scan8[4 ]]=
610 *(uint32_t*)h->mv_cache [list][scan8[12]]= 0;
618 static inline void write_back_intra_pred_mode(H264Context *h){
619 MpegEncContext * const s = &h->s;
620 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
622 h->intra4x4_pred_mode[mb_xy][0]= h->intra4x4_pred_mode_cache[7+8*1];
623 h->intra4x4_pred_mode[mb_xy][1]= h->intra4x4_pred_mode_cache[7+8*2];
624 h->intra4x4_pred_mode[mb_xy][2]= h->intra4x4_pred_mode_cache[7+8*3];
625 h->intra4x4_pred_mode[mb_xy][3]= h->intra4x4_pred_mode_cache[7+8*4];
626 h->intra4x4_pred_mode[mb_xy][4]= h->intra4x4_pred_mode_cache[4+8*4];
627 h->intra4x4_pred_mode[mb_xy][5]= h->intra4x4_pred_mode_cache[5+8*4];
628 h->intra4x4_pred_mode[mb_xy][6]= h->intra4x4_pred_mode_cache[6+8*4];
632 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
634 static inline int check_intra4x4_pred_mode(H264Context *h){
635 MpegEncContext * const s = &h->s;
636 static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
637 static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
640 if(!(h->top_samples_available&0x8000)){
642 int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
644 fprintf(stderr, "top block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
647 h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
652 if(!(h->left_samples_available&0x8000)){
654 int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
656 fprintf(stderr, "left block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
659 h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
665 } //FIXME cleanup like next
668 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
670 static inline int check_intra_pred_mode(H264Context *h, int mode){
671 MpegEncContext * const s = &h->s;
672 static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
673 static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
675 if(!(h->top_samples_available&0x8000)){
678 fprintf(stderr, "top block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
683 if(!(h->left_samples_available&0x8000)){
686 fprintf(stderr, "left block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
695 * gets the predicted intra4x4 prediction mode.
697 static inline int pred_intra_mode(H264Context *h, int n){
698 const int index8= scan8[n];
699 const int left= h->intra4x4_pred_mode_cache[index8 - 1];
700 const int top = h->intra4x4_pred_mode_cache[index8 - 8];
701 const int min= FFMIN(left, top);
703 tprintf("mode:%d %d min:%d\n", left ,top, min);
705 if(min<0) return DC_PRED;
709 static inline void write_back_non_zero_count(H264Context *h){
710 MpegEncContext * const s = &h->s;
711 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
713 h->non_zero_count[mb_xy][0]= h->non_zero_count_cache[4+8*4];
714 h->non_zero_count[mb_xy][1]= h->non_zero_count_cache[5+8*4];
715 h->non_zero_count[mb_xy][2]= h->non_zero_count_cache[6+8*4];
716 h->non_zero_count[mb_xy][3]= h->non_zero_count_cache[7+8*4];
717 h->non_zero_count[mb_xy][4]= h->non_zero_count_cache[7+8*3];
718 h->non_zero_count[mb_xy][5]= h->non_zero_count_cache[7+8*2];
719 h->non_zero_count[mb_xy][6]= h->non_zero_count_cache[7+8*1];
721 h->non_zero_count[mb_xy][7]= h->non_zero_count_cache[1+8*2];
722 h->non_zero_count[mb_xy][8]= h->non_zero_count_cache[2+8*2];
723 h->non_zero_count[mb_xy][9]= h->non_zero_count_cache[2+8*1];
725 h->non_zero_count[mb_xy][10]=h->non_zero_count_cache[1+8*5];
726 h->non_zero_count[mb_xy][11]=h->non_zero_count_cache[2+8*5];
727 h->non_zero_count[mb_xy][12]=h->non_zero_count_cache[2+8*4];
731 * gets the predicted number of non zero coefficients.
732 * @param n block index
734 static inline int pred_non_zero_count(H264Context *h, int n){
735 const int index8= scan8[n];
736 const int left= h->non_zero_count_cache[index8 - 1];
737 const int top = h->non_zero_count_cache[index8 - 8];
740 if(i<64) i= (i+1)>>1;
742 tprintf("pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31);
747 static inline int fetch_diagonal_mv(H264Context *h, const int16_t **C, int i, int list, int part_width){
748 const int topright_ref= h->ref_cache[list][ i - 8 + part_width ];
750 if(topright_ref != PART_NOT_AVAILABLE){
751 *C= h->mv_cache[list][ i - 8 + part_width ];
754 tprintf("topright MV not available\n");
756 *C= h->mv_cache[list][ i - 8 - 1 ];
757 return h->ref_cache[list][ i - 8 - 1 ];
762 * gets the predicted MV.
763 * @param n the block index
764 * @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
765 * @param mx the x component of the predicted motion vector
766 * @param my the y component of the predicted motion vector
768 static inline void pred_motion(H264Context * const h, int n, int part_width, int list, int ref, int * const mx, int * const my){
769 const int index8= scan8[n];
770 const int top_ref= h->ref_cache[list][ index8 - 8 ];
771 const int left_ref= h->ref_cache[list][ index8 - 1 ];
772 const int16_t * const A= h->mv_cache[list][ index8 - 1 ];
773 const int16_t * const B= h->mv_cache[list][ index8 - 8 ];
775 int diagonal_ref, match_count;
777 assert(part_width==1 || part_width==2 || part_width==4);
787 diagonal_ref= fetch_diagonal_mv(h, &C, index8, list, part_width);
788 match_count= (diagonal_ref==ref) + (top_ref==ref) + (left_ref==ref);
789 if(match_count > 1){ //most common
790 *mx= mid_pred(A[0], B[0], C[0]);
791 *my= mid_pred(A[1], B[1], C[1]);
792 }else if(match_count==1){
796 }else if(top_ref==ref){
804 if(top_ref == PART_NOT_AVAILABLE && diagonal_ref == PART_NOT_AVAILABLE && left_ref != PART_NOT_AVAILABLE){
808 *mx= mid_pred(A[0], B[0], C[0]);
809 *my= mid_pred(A[1], B[1], C[1]);
813 tprintf("pred_motion (%2d %2d %2d) (%2d %2d %2d) (%2d %2d %2d) -> (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1], diagonal_ref, C[0], C[1], left_ref, A[0], A[1], ref, *mx, *my, h->s.mb_x, h->s.mb_y, n, list);
817 * gets the directionally predicted 16x8 MV.
818 * @param n the block index
819 * @param mx the x component of the predicted motion vector
820 * @param my the y component of the predicted motion vector
822 static inline void pred_16x8_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
824 const int top_ref= h->ref_cache[list][ scan8[0] - 8 ];
825 const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];
827 tprintf("pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d", top_ref, B[0], B[1], h->s.mb_x, h->s.mb_y, n, list);
835 const int left_ref= h->ref_cache[list][ scan8[8] - 1 ];
836 const int16_t * const A= h->mv_cache[list][ scan8[8] - 1 ];
838 tprintf("pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list);
848 pred_motion(h, n, 4, list, ref, mx, my);
852 * gets the directionally predicted 8x16 MV.
853 * @param n the block index
854 * @param mx the x component of the predicted motion vector
855 * @param my the y component of the predicted motion vector
857 static inline void pred_8x16_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
859 const int left_ref= h->ref_cache[list][ scan8[0] - 1 ];
860 const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ];
862 tprintf("pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list);
873 diagonal_ref= fetch_diagonal_mv(h, &C, scan8[4], list, 2);
875 tprintf("pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d", diagonal_ref, C[0], C[1], h->s.mb_x, h->s.mb_y, n, list);
877 if(diagonal_ref == ref){
885 pred_motion(h, n, 2, list, ref, mx, my);
888 static inline void pred_pskip_motion(H264Context * const h, int * const mx, int * const my){
889 const int top_ref = h->ref_cache[0][ scan8[0] - 8 ];
890 const int left_ref= h->ref_cache[0][ scan8[0] - 1 ];
892 tprintf("pred_pskip: (%d) (%d) at %2d %2d", top_ref, left_ref, h->s.mb_x, h->s.mb_y);
894 if(top_ref == PART_NOT_AVAILABLE || left_ref == PART_NOT_AVAILABLE
895 || (top_ref == 0 && *(uint32_t*)h->mv_cache[0][ scan8[0] - 8 ] == 0)
896 || (left_ref == 0 && *(uint32_t*)h->mv_cache[0][ scan8[0] - 1 ] == 0)){
902 pred_motion(h, 0, 4, 0, 0, mx, my);
907 static inline void write_back_motion(H264Context *h, int mb_type){
908 MpegEncContext * const s = &h->s;
909 const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
910 const int b8_xy= 2*s->mb_x + 2*s->mb_y*h->b8_stride;
913 for(list=0; list<2; list++){
915 if((!IS_8X8(mb_type)) && !USES_LIST(mb_type, list)){
916 if(1){ //FIXME skip or never read if mb_type doesnt use it
918 *(uint64_t*)s->current_picture.motion_val[list][b_xy + 0 + y*h->b_stride]=
919 *(uint64_t*)s->current_picture.motion_val[list][b_xy + 2 + y*h->b_stride]= 0;
922 *(uint16_t*)s->current_picture.motion_val[list][b8_xy + y*h->b8_stride]= (LIST_NOT_USED&0xFF)*0x0101;
925 continue; //FIXME direct mode ...
929 *(uint64_t*)s->current_picture.motion_val[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+0 + 8*y];
930 *(uint64_t*)s->current_picture.motion_val[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+2 + 8*y];
933 s->current_picture.ref_index[list][b8_xy + 0 + y*h->b8_stride]= h->ref_cache[list][scan8[0]+0 + 16*y];
934 s->current_picture.ref_index[list][b8_xy + 1 + y*h->b8_stride]= h->ref_cache[list][scan8[0]+2 + 16*y];
940 * Decodes a network abstraction layer unit.
941 * @param consumed is the number of bytes used as input
942 * @param length is the length of the array
943 * @param dst_length is the number of decoded bytes FIXME here or a decode rbsp ttailing?
944 * @returns decoded bytes, might be src+1 if no escapes
946 static uint8_t *decode_nal(H264Context *h, uint8_t *src, int *dst_length, int *consumed, int length){
950 // src[0]&0x80; //forbidden bit
951 h->nal_ref_idc= src[0]>>5;
952 h->nal_unit_type= src[0]&0x1F;
956 for(i=0; i<length; i++)
957 printf("%2X ", src[i]);
959 for(i=0; i+1<length; i+=2){
961 if(i>0 && src[i-1]==0) i--;
962 if(i+2<length && src[i+1]==0 && src[i+2]<=3){
964 /* startcode, so we must be past the end */
971 if(i>=length-1){ //no escaped 0
973 *consumed= length+1; //+1 for the header
977 h->rbsp_buffer= av_fast_realloc(h->rbsp_buffer, &h->rbsp_buffer_size, length);
980 //printf("deoding esc\n");
983 //remove escapes (very rare 1:2^22)
984 if(si+2<length && src[si]==0 && src[si+1]==0 && src[si+2]<=3){
985 if(src[si+2]==3){ //escape
989 }else //next start code
993 dst[di++]= src[si++];
997 *consumed= si + 1;//+1 for the header
998 //FIXME store exact number of bits in the getbitcontext (its needed for decoding)
1003 * @param src the data which should be escaped
1004 * @param dst the target buffer, dst+1 == src is allowed as a special case
1005 * @param length the length of the src data
1006 * @param dst_length the length of the dst array
1007 * @returns length of escaped data in bytes or -1 if an error occured
1009 static int encode_nal(H264Context *h, uint8_t *dst, uint8_t *src, int length, int dst_length){
1010 int i, escape_count, si, di;
1014 assert(dst_length>0);
1016 dst[0]= (h->nal_ref_idc<<5) + h->nal_unit_type;
1018 if(length==0) return 1;
1021 for(i=0; i<length; i+=2){
1022 if(src[i]) continue;
1023 if(i>0 && src[i-1]==0)
1025 if(i+2<length && src[i+1]==0 && src[i+2]<=3){
1031 if(escape_count==0){
1033 memcpy(dst+1, src, length);
1037 if(length + escape_count + 1> dst_length)
1040 //this should be damn rare (hopefully)
1042 h->rbsp_buffer= av_fast_realloc(h->rbsp_buffer, &h->rbsp_buffer_size, length + escape_count);
1043 temp= h->rbsp_buffer;
1044 //printf("encoding esc\n");
1049 if(si+2<length && src[si]==0 && src[si+1]==0 && src[si+2]<=3){
1050 temp[di++]= 0; si++;
1051 temp[di++]= 0; si++;
1053 temp[di++]= src[si++];
1056 temp[di++]= src[si++];
1058 memcpy(dst+1, temp, length+escape_count);
1060 assert(di == length+escape_count);
1066 * write 1,10,100,1000,... for alignment, yes its exactly inverse to mpeg4
1068 static void encode_rbsp_trailing(PutBitContext *pb){
1071 length= (-get_bit_count(pb))&7;
1072 if(length) put_bits(pb, length, 0);
1076 * identifies the exact end of the bitstream
1077 * @return the length of the trailing, or 0 if damaged
1079 static int decode_rbsp_trailing(uint8_t *src){
1083 tprintf("rbsp trailing %X\n", v);
1093 * idct tranforms the 16 dc values and dequantize them.
1094 * @param qp quantization parameter
1096 static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp){
1097 const int qmul= dequant_coeff[qp][0];
1100 int temp[16]; //FIXME check if this is a good idea
1101 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
1102 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1104 //memset(block, 64, 2*256);
1107 const int offset= y_offset[i];
1108 const int z0= block[offset+stride*0] + block[offset+stride*4];
1109 const int z1= block[offset+stride*0] - block[offset+stride*4];
1110 const int z2= block[offset+stride*1] - block[offset+stride*5];
1111 const int z3= block[offset+stride*1] + block[offset+stride*5];
1120 const int offset= x_offset[i];
1121 const int z0= temp[4*0+i] + temp[4*2+i];
1122 const int z1= temp[4*0+i] - temp[4*2+i];
1123 const int z2= temp[4*1+i] - temp[4*3+i];
1124 const int z3= temp[4*1+i] + temp[4*3+i];
1126 block[stride*0 +offset]= ((z0 + z3)*qmul + 2)>>2; //FIXME think about merging this into decode_resdual
1127 block[stride*2 +offset]= ((z1 + z2)*qmul + 2)>>2;
1128 block[stride*8 +offset]= ((z1 - z2)*qmul + 2)>>2;
1129 block[stride*10+offset]= ((z0 - z3)*qmul + 2)>>2;
1134 * dct tranforms the 16 dc values.
1135 * @param qp quantization parameter ??? FIXME
1137 static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
1138 // const int qmul= dequant_coeff[qp][0];
1140 int temp[16]; //FIXME check if this is a good idea
1141 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
1142 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1145 const int offset= y_offset[i];
1146 const int z0= block[offset+stride*0] + block[offset+stride*4];
1147 const int z1= block[offset+stride*0] - block[offset+stride*4];
1148 const int z2= block[offset+stride*1] - block[offset+stride*5];
1149 const int z3= block[offset+stride*1] + block[offset+stride*5];
1158 const int offset= x_offset[i];
1159 const int z0= temp[4*0+i] + temp[4*2+i];
1160 const int z1= temp[4*0+i] - temp[4*2+i];
1161 const int z2= temp[4*1+i] - temp[4*3+i];
1162 const int z3= temp[4*1+i] + temp[4*3+i];
1164 block[stride*0 +offset]= (z0 + z3)>>1;
1165 block[stride*2 +offset]= (z1 + z2)>>1;
1166 block[stride*8 +offset]= (z1 - z2)>>1;
1167 block[stride*10+offset]= (z0 - z3)>>1;
1173 static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp){
1174 const int qmul= dequant_coeff[qp][0];
1175 const int stride= 16*2;
1176 const int xStride= 16;
1179 a= block[stride*0 + xStride*0];
1180 b= block[stride*0 + xStride*1];
1181 c= block[stride*1 + xStride*0];
1182 d= block[stride*1 + xStride*1];
1189 block[stride*0 + xStride*0]= ((a+c)*qmul + 0)>>1;
1190 block[stride*0 + xStride*1]= ((e+b)*qmul + 0)>>1;
1191 block[stride*1 + xStride*0]= ((a-c)*qmul + 0)>>1;
1192 block[stride*1 + xStride*1]= ((e-b)*qmul + 0)>>1;
1195 static void chroma_dc_dct_c(DCTELEM *block){
1196 const int stride= 16*2;
1197 const int xStride= 16;
1200 a= block[stride*0 + xStride*0];
1201 b= block[stride*0 + xStride*1];
1202 c= block[stride*1 + xStride*0];
1203 d= block[stride*1 + xStride*1];
1210 block[stride*0 + xStride*0]= (a+c);
1211 block[stride*0 + xStride*1]= (e+b);
1212 block[stride*1 + xStride*0]= (a-c);
1213 block[stride*1 + xStride*1]= (e-b);
1217 * gets the chroma qp.
1219 static inline int get_chroma_qp(H264Context *h, int qscale){
1221 return chroma_qp[clip(qscale + h->pps.chroma_qp_index_offset, 0, 51)];
1228 static void h264_add_idct_c(uint8_t *dst, DCTELEM *block, int stride){
1230 uint8_t *cm = cropTbl + MAX_NEG_CROP;
1235 const int z0= block[i + 4*0] + block[i + 4*2];
1236 const int z1= block[i + 4*0] - block[i + 4*2];
1237 const int z2= (block[i + 4*1]>>1) - block[i + 4*3];
1238 const int z3= block[i + 4*1] + (block[i + 4*3]>>1);
1240 block[i + 4*0]= z0 + z3;
1241 block[i + 4*1]= z1 + z2;
1242 block[i + 4*2]= z1 - z2;
1243 block[i + 4*3]= z0 - z3;
1247 const int z0= block[0 + 4*i] + block[2 + 4*i];
1248 const int z1= block[0 + 4*i] - block[2 + 4*i];
1249 const int z2= (block[1 + 4*i]>>1) - block[3 + 4*i];
1250 const int z3= block[1 + 4*i] + (block[3 + 4*i]>>1);
1252 dst[0 + i*stride]= cm[ dst[0 + i*stride] + ((z0 + z3) >> 6) ];
1253 dst[1 + i*stride]= cm[ dst[1 + i*stride] + ((z1 + z2) >> 6) ];
1254 dst[2 + i*stride]= cm[ dst[2 + i*stride] + ((z1 - z2) >> 6) ];
1255 dst[3 + i*stride]= cm[ dst[3 + i*stride] + ((z0 - z3) >> 6) ];
1259 const int z0= block[0 + 4*i] + block[2 + 4*i];
1260 const int z1= block[0 + 4*i] - block[2 + 4*i];
1261 const int z2= (block[1 + 4*i]>>1) - block[3 + 4*i];
1262 const int z3= block[1 + 4*i] + (block[3 + 4*i]>>1);
1264 block[0 + 4*i]= z0 + z3;
1265 block[1 + 4*i]= z1 + z2;
1266 block[2 + 4*i]= z1 - z2;
1267 block[3 + 4*i]= z0 - z3;
1271 const int z0= block[i + 4*0] + block[i + 4*2];
1272 const int z1= block[i + 4*0] - block[i + 4*2];
1273 const int z2= (block[i + 4*1]>>1) - block[i + 4*3];
1274 const int z3= block[i + 4*1] + (block[i + 4*3]>>1);
1276 dst[i + 0*stride]= cm[ dst[i + 0*stride] + ((z0 + z3) >> 6) ];
1277 dst[i + 1*stride]= cm[ dst[i + 1*stride] + ((z1 + z2) >> 6) ];
1278 dst[i + 2*stride]= cm[ dst[i + 2*stride] + ((z1 - z2) >> 6) ];
1279 dst[i + 3*stride]= cm[ dst[i + 3*stride] + ((z0 - z3) >> 6) ];
1284 static void h264_diff_dct_c(DCTELEM *block, uint8_t *src1, uint8_t *src2, int stride){
1286 //FIXME try int temp instead of block
1289 const int d0= src1[0 + i*stride] - src2[0 + i*stride];
1290 const int d1= src1[1 + i*stride] - src2[1 + i*stride];
1291 const int d2= src1[2 + i*stride] - src2[2 + i*stride];
1292 const int d3= src1[3 + i*stride] - src2[3 + i*stride];
1293 const int z0= d0 + d3;
1294 const int z3= d0 - d3;
1295 const int z1= d1 + d2;
1296 const int z2= d1 - d2;
1298 block[0 + 4*i]= z0 + z1;
1299 block[1 + 4*i]= 2*z3 + z2;
1300 block[2 + 4*i]= z0 - z1;
1301 block[3 + 4*i]= z3 - 2*z2;
1305 const int z0= block[0*4 + i] + block[3*4 + i];
1306 const int z3= block[0*4 + i] - block[3*4 + i];
1307 const int z1= block[1*4 + i] + block[2*4 + i];
1308 const int z2= block[1*4 + i] - block[2*4 + i];
1310 block[0*4 + i]= z0 + z1;
1311 block[1*4 + i]= 2*z3 + z2;
1312 block[2*4 + i]= z0 - z1;
1313 block[3*4 + i]= z3 - 2*z2;
1317 //FIXME need to check that this doesnt overflow signed 32 bit for low qp, iam not sure, its very close
1318 //FIXME check that gcc inlines this (and optimizes intra & seperate_dc stuff away)
1319 static inline int quantize_c(DCTELEM *block, uint8_t *scantable, int qscale, int intra, int seperate_dc){
1321 const int * const quant_table= quant_coeff[qscale];
1322 const int bias= intra ? (1<<QUANT_SHIFT)/3 : (1<<QUANT_SHIFT)/6;
1323 const unsigned int threshold1= (1<<QUANT_SHIFT) - bias - 1;
1324 const unsigned int threshold2= (threshold1<<1);
1330 const int dc_bias= intra ? (1<<(QUANT_SHIFT-2))/3 : (1<<(QUANT_SHIFT-2))/6;
1331 const unsigned int dc_threshold1= (1<<(QUANT_SHIFT-2)) - dc_bias - 1;
1332 const unsigned int dc_threshold2= (dc_threshold1<<1);
1334 int level= block[0]*quant_coeff[qscale+18][0];
1335 if(((unsigned)(level+dc_threshold1))>dc_threshold2){
1337 level= (dc_bias + level)>>(QUANT_SHIFT-2);
1340 level= (dc_bias - level)>>(QUANT_SHIFT-2);
1343 // last_non_zero = i;
1348 const int dc_bias= intra ? (1<<(QUANT_SHIFT+1))/3 : (1<<(QUANT_SHIFT+1))/6;
1349 const unsigned int dc_threshold1= (1<<(QUANT_SHIFT+1)) - dc_bias - 1;
1350 const unsigned int dc_threshold2= (dc_threshold1<<1);
1352 int level= block[0]*quant_table[0];
1353 if(((unsigned)(level+dc_threshold1))>dc_threshold2){
1355 level= (dc_bias + level)>>(QUANT_SHIFT+1);
1358 level= (dc_bias - level)>>(QUANT_SHIFT+1);
1361 // last_non_zero = i;
1374 const int j= scantable[i];
1375 int level= block[j]*quant_table[j];
1377 // if( bias+level >= (1<<(QMAT_SHIFT - 3))
1378 // || bias-level >= (1<<(QMAT_SHIFT - 3))){
1379 if(((unsigned)(level+threshold1))>threshold2){
1381 level= (bias + level)>>QUANT_SHIFT;
1384 level= (bias - level)>>QUANT_SHIFT;
1393 return last_non_zero;
1396 static void pred4x4_vertical_c(uint8_t *src, uint8_t *topright, int stride){
1397 const uint32_t a= ((uint32_t*)(src-stride))[0];
1398 ((uint32_t*)(src+0*stride))[0]= a;
1399 ((uint32_t*)(src+1*stride))[0]= a;
1400 ((uint32_t*)(src+2*stride))[0]= a;
1401 ((uint32_t*)(src+3*stride))[0]= a;
1404 static void pred4x4_horizontal_c(uint8_t *src, uint8_t *topright, int stride){
1405 ((uint32_t*)(src+0*stride))[0]= src[-1+0*stride]*0x01010101;
1406 ((uint32_t*)(src+1*stride))[0]= src[-1+1*stride]*0x01010101;
1407 ((uint32_t*)(src+2*stride))[0]= src[-1+2*stride]*0x01010101;
1408 ((uint32_t*)(src+3*stride))[0]= src[-1+3*stride]*0x01010101;
1411 static void pred4x4_dc_c(uint8_t *src, uint8_t *topright, int stride){
1412 const int dc= ( src[-stride] + src[1-stride] + src[2-stride] + src[3-stride]
1413 + src[-1+0*stride] + src[-1+1*stride] + src[-1+2*stride] + src[-1+3*stride] + 4) >>3;
1415 ((uint32_t*)(src+0*stride))[0]=
1416 ((uint32_t*)(src+1*stride))[0]=
1417 ((uint32_t*)(src+2*stride))[0]=
1418 ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101;
1421 static void pred4x4_left_dc_c(uint8_t *src, uint8_t *topright, int stride){
1422 const int dc= ( src[-1+0*stride] + src[-1+1*stride] + src[-1+2*stride] + src[-1+3*stride] + 2) >>2;
1424 ((uint32_t*)(src+0*stride))[0]=
1425 ((uint32_t*)(src+1*stride))[0]=
1426 ((uint32_t*)(src+2*stride))[0]=
1427 ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101;
1430 static void pred4x4_top_dc_c(uint8_t *src, uint8_t *topright, int stride){
1431 const int dc= ( src[-stride] + src[1-stride] + src[2-stride] + src[3-stride] + 2) >>2;
1433 ((uint32_t*)(src+0*stride))[0]=
1434 ((uint32_t*)(src+1*stride))[0]=
1435 ((uint32_t*)(src+2*stride))[0]=
1436 ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101;
1439 static void pred4x4_128_dc_c(uint8_t *src, uint8_t *topright, int stride){
1440 ((uint32_t*)(src+0*stride))[0]=
1441 ((uint32_t*)(src+1*stride))[0]=
1442 ((uint32_t*)(src+2*stride))[0]=
1443 ((uint32_t*)(src+3*stride))[0]= 128U*0x01010101U;
1447 #define LOAD_TOP_RIGHT_EDGE\
1448 const int t4= topright[0];\
1449 const int t5= topright[1];\
1450 const int t6= topright[2];\
1451 const int t7= topright[3];\
1453 #define LOAD_LEFT_EDGE\
1454 const int l0= src[-1+0*stride];\
1455 const int l1= src[-1+1*stride];\
1456 const int l2= src[-1+2*stride];\
1457 const int l3= src[-1+3*stride];\
1459 #define LOAD_TOP_EDGE\
1460 const int t0= src[ 0-1*stride];\
1461 const int t1= src[ 1-1*stride];\
1462 const int t2= src[ 2-1*stride];\
1463 const int t3= src[ 3-1*stride];\
1465 static void pred4x4_down_right_c(uint8_t *src, uint8_t *topright, int stride){
1466 const int lt= src[-1-1*stride];
1470 src[0+3*stride]=(l3 + 2*l2 + l1 + 2)>>2;
1472 src[1+3*stride]=(l2 + 2*l1 + l0 + 2)>>2;
1475 src[2+3*stride]=(l1 + 2*l0 + lt + 2)>>2;
1479 src[3+3*stride]=(l0 + 2*lt + t0 + 2)>>2;
1482 src[3+2*stride]=(lt + 2*t0 + t1 + 2)>>2;
1484 src[3+1*stride]=(t0 + 2*t1 + t2 + 2)>>2;
1485 src[3+0*stride]=(t1 + 2*t2 + t3 + 2)>>2;
1488 static void pred4x4_down_left_c(uint8_t *src, uint8_t *topright, int stride){
1493 src[0+0*stride]=(t0 + t2 + 2*t1 + 2)>>2;
1495 src[0+1*stride]=(t1 + t3 + 2*t2 + 2)>>2;
1498 src[0+2*stride]=(t2 + t4 + 2*t3 + 2)>>2;
1502 src[0+3*stride]=(t3 + t5 + 2*t4 + 2)>>2;
1505 src[1+3*stride]=(t4 + t6 + 2*t5 + 2)>>2;
1507 src[2+3*stride]=(t5 + t7 + 2*t6 + 2)>>2;
1508 src[3+3*stride]=(t6 + 3*t7 + 2)>>2;
1511 static void pred4x4_vertical_right_c(uint8_t *src, uint8_t *topright, int stride){
1512 const int lt= src[-1-1*stride];
1515 const __attribute__((unused)) int unu= l3;
1518 src[1+2*stride]=(lt + t0 + 1)>>1;
1520 src[2+2*stride]=(t0 + t1 + 1)>>1;
1522 src[3+2*stride]=(t1 + t2 + 1)>>1;
1523 src[3+0*stride]=(t2 + t3 + 1)>>1;
1525 src[1+3*stride]=(l0 + 2*lt + t0 + 2)>>2;
1527 src[2+3*stride]=(lt + 2*t0 + t1 + 2)>>2;
1529 src[3+3*stride]=(t0 + 2*t1 + t2 + 2)>>2;
1530 src[3+1*stride]=(t1 + 2*t2 + t3 + 2)>>2;
1531 src[0+2*stride]=(lt + 2*l0 + l1 + 2)>>2;
1532 src[0+3*stride]=(l0 + 2*l1 + l2 + 2)>>2;
1535 static void pred4x4_vertical_left_c(uint8_t *src, uint8_t *topright, int stride){
1538 const __attribute__((unused)) int unu= t7;
1540 src[0+0*stride]=(t0 + t1 + 1)>>1;
1542 src[0+2*stride]=(t1 + t2 + 1)>>1;
1544 src[1+2*stride]=(t2 + t3 + 1)>>1;
1546 src[2+2*stride]=(t3 + t4+ 1)>>1;
1547 src[3+2*stride]=(t4 + t5+ 1)>>1;
1548 src[0+1*stride]=(t0 + 2*t1 + t2 + 2)>>2;
1550 src[0+3*stride]=(t1 + 2*t2 + t3 + 2)>>2;
1552 src[1+3*stride]=(t2 + 2*t3 + t4 + 2)>>2;
1554 src[2+3*stride]=(t3 + 2*t4 + t5 + 2)>>2;
1555 src[3+3*stride]=(t4 + 2*t5 + t6 + 2)>>2;
1558 static void pred4x4_horizontal_up_c(uint8_t *src, uint8_t *topright, int stride){
1561 src[0+0*stride]=(l0 + l1 + 1)>>1;
1562 src[1+0*stride]=(l0 + 2*l1 + l2 + 2)>>2;
1564 src[0+1*stride]=(l1 + l2 + 1)>>1;
1566 src[1+1*stride]=(l1 + 2*l2 + l3 + 2)>>2;
1568 src[0+2*stride]=(l2 + l3 + 1)>>1;
1570 src[1+2*stride]=(l2 + 2*l3 + l3 + 2)>>2;
1579 static void pred4x4_horizontal_down_c(uint8_t *src, uint8_t *topright, int stride){
1580 const int lt= src[-1-1*stride];
1583 const __attribute__((unused)) int unu= t3;
1586 src[2+1*stride]=(lt + l0 + 1)>>1;
1588 src[3+1*stride]=(l0 + 2*lt + t0 + 2)>>2;
1589 src[2+0*stride]=(lt + 2*t0 + t1 + 2)>>2;
1590 src[3+0*stride]=(t0 + 2*t1 + t2 + 2)>>2;
1592 src[2+2*stride]=(l0 + l1 + 1)>>1;
1594 src[3+2*stride]=(lt + 2*l0 + l1 + 2)>>2;
1596 src[2+3*stride]=(l1 + l2+ 1)>>1;
1598 src[3+3*stride]=(l0 + 2*l1 + l2 + 2)>>2;
1599 src[0+3*stride]=(l2 + l3 + 1)>>1;
1600 src[1+3*stride]=(l1 + 2*l2 + l3 + 2)>>2;
1603 static void pred16x16_vertical_c(uint8_t *src, int stride){
1605 const uint32_t a= ((uint32_t*)(src-stride))[0];
1606 const uint32_t b= ((uint32_t*)(src-stride))[1];
1607 const uint32_t c= ((uint32_t*)(src-stride))[2];
1608 const uint32_t d= ((uint32_t*)(src-stride))[3];
1610 for(i=0; i<16; i++){
1611 ((uint32_t*)(src+i*stride))[0]= a;
1612 ((uint32_t*)(src+i*stride))[1]= b;
1613 ((uint32_t*)(src+i*stride))[2]= c;
1614 ((uint32_t*)(src+i*stride))[3]= d;
1618 static void pred16x16_horizontal_c(uint8_t *src, int stride){
1621 for(i=0; i<16; i++){
1622 ((uint32_t*)(src+i*stride))[0]=
1623 ((uint32_t*)(src+i*stride))[1]=
1624 ((uint32_t*)(src+i*stride))[2]=
1625 ((uint32_t*)(src+i*stride))[3]= src[-1+i*stride]*0x01010101;
1629 static void pred16x16_dc_c(uint8_t *src, int stride){
1633 dc+= src[-1+i*stride];
1640 dc= 0x01010101*((dc + 16)>>5);
1642 for(i=0; i<16; i++){
1643 ((uint32_t*)(src+i*stride))[0]=
1644 ((uint32_t*)(src+i*stride))[1]=
1645 ((uint32_t*)(src+i*stride))[2]=
1646 ((uint32_t*)(src+i*stride))[3]= dc;
1650 static void pred16x16_left_dc_c(uint8_t *src, int stride){
1654 dc+= src[-1+i*stride];
1657 dc= 0x01010101*((dc + 8)>>4);
1659 for(i=0; i<16; i++){
1660 ((uint32_t*)(src+i*stride))[0]=
1661 ((uint32_t*)(src+i*stride))[1]=
1662 ((uint32_t*)(src+i*stride))[2]=
1663 ((uint32_t*)(src+i*stride))[3]= dc;
1667 static void pred16x16_top_dc_c(uint8_t *src, int stride){
1673 dc= 0x01010101*((dc + 8)>>4);
1675 for(i=0; i<16; i++){
1676 ((uint32_t*)(src+i*stride))[0]=
1677 ((uint32_t*)(src+i*stride))[1]=
1678 ((uint32_t*)(src+i*stride))[2]=
1679 ((uint32_t*)(src+i*stride))[3]= dc;
1683 static void pred16x16_128_dc_c(uint8_t *src, int stride){
1686 for(i=0; i<16; i++){
1687 ((uint32_t*)(src+i*stride))[0]=
1688 ((uint32_t*)(src+i*stride))[1]=
1689 ((uint32_t*)(src+i*stride))[2]=
1690 ((uint32_t*)(src+i*stride))[3]= 0x01010101U*128U;
1694 static inline void pred16x16_plane_compat_c(uint8_t *src, int stride, const int svq3){
1697 uint8_t *cm = cropTbl + MAX_NEG_CROP;
1698 const uint8_t * const src0 = src+7-stride;
1699 const uint8_t *src1 = src+8*stride-1;
1700 const uint8_t *src2 = src1-2*stride; // == src+6*stride-1;
1701 int H = src0[1] - src0[-1];
1702 int V = src1[0] - src2[ 0];
1703 for(k=2; k<=8; ++k) {
1704 src1 += stride; src2 -= stride;
1705 H += k*(src0[k] - src0[-k]);
1706 V += k*(src1[0] - src2[ 0]);
1709 H = ( 5*(H/4) ) / 16;
1710 V = ( 5*(V/4) ) / 16;
1712 /* required for 100% accuracy */
1713 i = H; H = V; V = i;
1715 H = ( 5*H+32 ) >> 6;
1716 V = ( 5*V+32 ) >> 6;
1719 a = 16*(src1[0] + src2[16] + 1) - 7*(V+H);
1720 for(j=16; j>0; --j) {
1723 for(i=-16; i<0; i+=4) {
1724 src[16+i] = cm[ (b ) >> 5 ];
1725 src[17+i] = cm[ (b+ H) >> 5 ];
1726 src[18+i] = cm[ (b+2*H) >> 5 ];
1727 src[19+i] = cm[ (b+3*H) >> 5 ];
1734 static void pred16x16_plane_c(uint8_t *src, int stride){
1735 pred16x16_plane_compat_c(src, stride, 0);
1738 static void pred8x8_vertical_c(uint8_t *src, int stride){
1740 const uint32_t a= ((uint32_t*)(src-stride))[0];
1741 const uint32_t b= ((uint32_t*)(src-stride))[1];
1744 ((uint32_t*)(src+i*stride))[0]= a;
1745 ((uint32_t*)(src+i*stride))[1]= b;
1749 static void pred8x8_horizontal_c(uint8_t *src, int stride){
1753 ((uint32_t*)(src+i*stride))[0]=
1754 ((uint32_t*)(src+i*stride))[1]= src[-1+i*stride]*0x01010101;
1758 static void pred8x8_128_dc_c(uint8_t *src, int stride){
1762 ((uint32_t*)(src+i*stride))[0]=
1763 ((uint32_t*)(src+i*stride))[1]= 0x01010101U*128U;
1766 ((uint32_t*)(src+i*stride))[0]=
1767 ((uint32_t*)(src+i*stride))[1]= 0x01010101U*128U;
1771 static void pred8x8_left_dc_c(uint8_t *src, int stride){
1777 dc0+= src[-1+i*stride];
1778 dc2+= src[-1+(i+4)*stride];
1780 dc0= 0x01010101*((dc0 + 2)>>2);
1781 dc2= 0x01010101*((dc2 + 2)>>2);
1784 ((uint32_t*)(src+i*stride))[0]=
1785 ((uint32_t*)(src+i*stride))[1]= dc0;
1788 ((uint32_t*)(src+i*stride))[0]=
1789 ((uint32_t*)(src+i*stride))[1]= dc2;
1793 static void pred8x8_top_dc_c(uint8_t *src, int stride){
1799 dc0+= src[i-stride];
1800 dc1+= src[4+i-stride];
1802 dc0= 0x01010101*((dc0 + 2)>>2);
1803 dc1= 0x01010101*((dc1 + 2)>>2);
1806 ((uint32_t*)(src+i*stride))[0]= dc0;
1807 ((uint32_t*)(src+i*stride))[1]= dc1;
1810 ((uint32_t*)(src+i*stride))[0]= dc0;
1811 ((uint32_t*)(src+i*stride))[1]= dc1;
1816 static void pred8x8_dc_c(uint8_t *src, int stride){
1818 int dc0, dc1, dc2, dc3;
1822 dc0+= src[-1+i*stride] + src[i-stride];
1823 dc1+= src[4+i-stride];
1824 dc2+= src[-1+(i+4)*stride];
1826 dc3= 0x01010101*((dc1 + dc2 + 4)>>3);
1827 dc0= 0x01010101*((dc0 + 4)>>3);
1828 dc1= 0x01010101*((dc1 + 2)>>2);
1829 dc2= 0x01010101*((dc2 + 2)>>2);
1832 ((uint32_t*)(src+i*stride))[0]= dc0;
1833 ((uint32_t*)(src+i*stride))[1]= dc1;
1836 ((uint32_t*)(src+i*stride))[0]= dc2;
1837 ((uint32_t*)(src+i*stride))[1]= dc3;
1841 static void pred8x8_plane_c(uint8_t *src, int stride){
1844 uint8_t *cm = cropTbl + MAX_NEG_CROP;
1845 const uint8_t * const src0 = src+3-stride;
1846 const uint8_t *src1 = src+4*stride-1;
1847 const uint8_t *src2 = src1-2*stride; // == src+2*stride-1;
1848 int H = src0[1] - src0[-1];
1849 int V = src1[0] - src2[ 0];
1850 for(k=2; k<=4; ++k) {
1851 src1 += stride; src2 -= stride;
1852 H += k*(src0[k] - src0[-k]);
1853 V += k*(src1[0] - src2[ 0]);
1855 H = ( 17*H+16 ) >> 5;
1856 V = ( 17*V+16 ) >> 5;
1858 a = 16*(src1[0] + src2[8]+1) - 3*(V+H);
1859 for(j=8; j>0; --j) {
1862 src[0] = cm[ (b ) >> 5 ];
1863 src[1] = cm[ (b+ H) >> 5 ];
1864 src[2] = cm[ (b+2*H) >> 5 ];
1865 src[3] = cm[ (b+3*H) >> 5 ];
1866 src[4] = cm[ (b+4*H) >> 5 ];
1867 src[5] = cm[ (b+5*H) >> 5 ];
1868 src[6] = cm[ (b+6*H) >> 5 ];
1869 src[7] = cm[ (b+7*H) >> 5 ];
1874 static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
1875 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1876 int src_x_offset, int src_y_offset,
1877 qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
1878 MpegEncContext * const s = &h->s;
1879 const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
1880 const int my= h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
1881 const int luma_xy= (mx&3) + ((my&3)<<2);
1882 uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*s->linesize;
1883 uint8_t * src_cb= pic->data[1] + (mx>>3) + (my>>3)*s->uvlinesize;
1884 uint8_t * src_cr= pic->data[2] + (mx>>3) + (my>>3)*s->uvlinesize;
1885 int extra_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16; //FIXME increase edge?, IMHO not worth it
1886 int extra_height= extra_width;
1888 const int full_mx= mx>>2;
1889 const int full_my= my>>2;
1891 assert(pic->data[0]);
1893 if(mx&7) extra_width -= 3;
1894 if(my&7) extra_height -= 3;
1896 if( full_mx < 0-extra_width
1897 || full_my < 0-extra_height
1898 || full_mx + 16/*FIXME*/ > s->width + extra_width
1899 || full_my + 16/*FIXME*/ > s->height + extra_height){
1900 ff_emulated_edge_mc(s->edge_emu_buffer, src_y - 2 - 2*s->linesize, s->linesize, 16+5, 16+5/*FIXME*/, full_mx-2, full_my-2, s->width, s->height);
1901 src_y= s->edge_emu_buffer + 2 + 2*s->linesize;
1905 qpix_op[luma_xy](dest_y, src_y, s->linesize); //FIXME try variable height perhaps?
1907 qpix_op[luma_xy](dest_y + delta, src_y + delta, s->linesize);
1910 if(s->flags&CODEC_FLAG_GRAY) return;
1913 ff_emulated_edge_mc(s->edge_emu_buffer, src_cb, s->uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), s->width>>1, s->height>>1);
1914 src_cb= s->edge_emu_buffer;
1916 chroma_op(dest_cb, src_cb, s->uvlinesize, chroma_height, mx&7, my&7);
1919 ff_emulated_edge_mc(s->edge_emu_buffer, src_cr, s->uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), s->width>>1, s->height>>1);
1920 src_cr= s->edge_emu_buffer;
1922 chroma_op(dest_cr, src_cr, s->uvlinesize, chroma_height, mx&7, my&7);
1925 static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
1926 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1927 int x_offset, int y_offset,
1928 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1929 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
1930 int list0, int list1){
1931 MpegEncContext * const s = &h->s;
1932 qpel_mc_func *qpix_op= qpix_put;
1933 h264_chroma_mc_func chroma_op= chroma_put;
1935 dest_y += 2*x_offset + 2*y_offset*s-> linesize;
1936 dest_cb += x_offset + y_offset*s->uvlinesize;
1937 dest_cr += x_offset + y_offset*s->uvlinesize;
1938 x_offset += 8*s->mb_x;
1939 y_offset += 8*s->mb_y;
1942 Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
1943 mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
1944 dest_y, dest_cb, dest_cr, x_offset, y_offset,
1945 qpix_op, chroma_op);
1948 chroma_op= chroma_avg;
1952 Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
1953 mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
1954 dest_y, dest_cb, dest_cr, x_offset, y_offset,
1955 qpix_op, chroma_op);
1959 static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1960 qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
1961 qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg)){
1962 MpegEncContext * const s = &h->s;
1963 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
1964 const int mb_type= s->current_picture.mb_type[mb_xy];
1966 assert(IS_INTER(mb_type));
1968 if(IS_16X16(mb_type)){
1969 mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
1970 qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
1971 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1972 }else if(IS_16X8(mb_type)){
1973 mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
1974 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
1975 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1976 mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
1977 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
1978 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
1979 }else if(IS_8X16(mb_type)){
1980 mc_part(h, 0, 0, 8, 8*s->linesize, dest_y, dest_cb, dest_cr, 0, 0,
1981 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1982 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1983 mc_part(h, 4, 0, 8, 8*s->linesize, dest_y, dest_cb, dest_cr, 4, 0,
1984 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1985 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
1989 assert(IS_8X8(mb_type));
1992 const int sub_mb_type= h->sub_mb_type[i];
1994 int x_offset= (i&1)<<2;
1995 int y_offset= (i&2)<<1;
1997 if(IS_SUB_8X8(sub_mb_type)){
1998 mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1999 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
2000 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2001 }else if(IS_SUB_8X4(sub_mb_type)){
2002 mc_part(h, n , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
2003 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
2004 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2005 mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
2006 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
2007 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2008 }else if(IS_SUB_4X8(sub_mb_type)){
2009 mc_part(h, n , 0, 4, 4*s->linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
2010 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
2011 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2012 mc_part(h, n+1, 0, 4, 4*s->linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
2013 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
2014 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2017 assert(IS_SUB_4X4(sub_mb_type));
2019 int sub_x_offset= x_offset + 2*(j&1);
2020 int sub_y_offset= y_offset + (j&2);
2021 mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
2022 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
2023 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2030 static void decode_init_vlc(H264Context *h){
2031 static int done = 0;
2037 init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5,
2038 &chroma_dc_coeff_token_len [0], 1, 1,
2039 &chroma_dc_coeff_token_bits[0], 1, 1);
2042 init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17,
2043 &coeff_token_len [i][0], 1, 1,
2044 &coeff_token_bits[i][0], 1, 1);
2048 init_vlc(&chroma_dc_total_zeros_vlc[i], CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4,
2049 &chroma_dc_total_zeros_len [i][0], 1, 1,
2050 &chroma_dc_total_zeros_bits[i][0], 1, 1);
2052 for(i=0; i<15; i++){
2053 init_vlc(&total_zeros_vlc[i], TOTAL_ZEROS_VLC_BITS, 16,
2054 &total_zeros_len [i][0], 1, 1,
2055 &total_zeros_bits[i][0], 1, 1);
2059 init_vlc(&run_vlc[i], RUN_VLC_BITS, 7,
2060 &run_len [i][0], 1, 1,
2061 &run_bits[i][0], 1, 1);
2063 init_vlc(&run7_vlc, RUN7_VLC_BITS, 16,
2064 &run_len [6][0], 1, 1,
2065 &run_bits[6][0], 1, 1);
2070 * Sets the intra prediction function pointers.
2072 static void init_pred_ptrs(H264Context *h){
2073 // MpegEncContext * const s = &h->s;
2075 h->pred4x4[VERT_PRED ]= pred4x4_vertical_c;
2076 h->pred4x4[HOR_PRED ]= pred4x4_horizontal_c;
2077 h->pred4x4[DC_PRED ]= pred4x4_dc_c;
2078 h->pred4x4[DIAG_DOWN_LEFT_PRED ]= pred4x4_down_left_c;
2079 h->pred4x4[DIAG_DOWN_RIGHT_PRED]= pred4x4_down_right_c;
2080 h->pred4x4[VERT_RIGHT_PRED ]= pred4x4_vertical_right_c;
2081 h->pred4x4[HOR_DOWN_PRED ]= pred4x4_horizontal_down_c;
2082 h->pred4x4[VERT_LEFT_PRED ]= pred4x4_vertical_left_c;
2083 h->pred4x4[HOR_UP_PRED ]= pred4x4_horizontal_up_c;
2084 h->pred4x4[LEFT_DC_PRED ]= pred4x4_left_dc_c;
2085 h->pred4x4[TOP_DC_PRED ]= pred4x4_top_dc_c;
2086 h->pred4x4[DC_128_PRED ]= pred4x4_128_dc_c;
2088 h->pred8x8[DC_PRED8x8 ]= pred8x8_dc_c;
2089 h->pred8x8[VERT_PRED8x8 ]= pred8x8_vertical_c;
2090 h->pred8x8[HOR_PRED8x8 ]= pred8x8_horizontal_c;
2091 h->pred8x8[PLANE_PRED8x8 ]= pred8x8_plane_c;
2092 h->pred8x8[LEFT_DC_PRED8x8]= pred8x8_left_dc_c;
2093 h->pred8x8[TOP_DC_PRED8x8 ]= pred8x8_top_dc_c;
2094 h->pred8x8[DC_128_PRED8x8 ]= pred8x8_128_dc_c;
2096 h->pred16x16[DC_PRED8x8 ]= pred16x16_dc_c;
2097 h->pred16x16[VERT_PRED8x8 ]= pred16x16_vertical_c;
2098 h->pred16x16[HOR_PRED8x8 ]= pred16x16_horizontal_c;
2099 h->pred16x16[PLANE_PRED8x8 ]= pred16x16_plane_c;
2100 h->pred16x16[LEFT_DC_PRED8x8]= pred16x16_left_dc_c;
2101 h->pred16x16[TOP_DC_PRED8x8 ]= pred16x16_top_dc_c;
2102 h->pred16x16[DC_128_PRED8x8 ]= pred16x16_128_dc_c;
2105 static void free_tables(H264Context *h){
2106 av_freep(&h->intra4x4_pred_mode);
2107 av_freep(&h->non_zero_count);
2108 av_freep(&h->slice_table_base);
2109 h->slice_table= NULL;
2111 av_freep(&h->mb2b_xy);
2112 av_freep(&h->mb2b8_xy);
2117 * needs widzh/height
2119 static int alloc_tables(H264Context *h){
2120 MpegEncContext * const s = &h->s;
2121 const int big_mb_num= s->mb_stride * (s->mb_height+1);
2124 CHECKED_ALLOCZ(h->intra4x4_pred_mode, big_mb_num * 8 * sizeof(uint8_t))
2125 CHECKED_ALLOCZ(h->non_zero_count , big_mb_num * 16 * sizeof(uint8_t))
2126 CHECKED_ALLOCZ(h->slice_table_base , big_mb_num * sizeof(uint8_t))
2128 memset(h->slice_table_base, -1, big_mb_num * sizeof(uint8_t));
2129 h->slice_table= h->slice_table_base + s->mb_stride + 1;
2131 CHECKED_ALLOCZ(h->mb2b_xy , big_mb_num * sizeof(uint16_t));
2132 CHECKED_ALLOCZ(h->mb2b8_xy , big_mb_num * sizeof(uint16_t));
2133 for(y=0; y<s->mb_height; y++){
2134 for(x=0; x<s->mb_width; x++){
2135 const int mb_xy= x + y*s->mb_stride;
2136 const int b_xy = 4*x + 4*y*h->b_stride;
2137 const int b8_xy= 2*x + 2*y*h->b8_stride;
2139 h->mb2b_xy [mb_xy]= b_xy;
2140 h->mb2b8_xy[mb_xy]= b8_xy;
2150 static void common_init(H264Context *h){
2151 MpegEncContext * const s = &h->s;
2153 s->width = s->avctx->width;
2154 s->height = s->avctx->height;
2155 s->codec_id= s->avctx->codec->id;
2159 s->decode=1; //FIXME
2162 static int decode_init(AVCodecContext *avctx){
2163 H264Context *h= avctx->priv_data;
2164 MpegEncContext * const s = &h->s;
2169 s->out_format = FMT_H264;
2170 s->workaround_bugs= avctx->workaround_bugs;
2173 s->progressive_sequence=1;
2174 // s->decode_mb= ff_h263_decode_mb;
2176 avctx->pix_fmt= PIX_FMT_YUV420P;
2183 static void frame_start(H264Context *h){
2184 MpegEncContext * const s = &h->s;
2187 MPV_frame_start(s, s->avctx);
2188 ff_er_frame_start(s);
2191 assert(s->linesize && s->uvlinesize);
2193 for(i=0; i<16; i++){
2194 h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
2195 h->chroma_subblock_offset[i]= 2*((scan8[i] - scan8[0])&7) + 2*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2198 h->block_offset[16+i]=
2199 h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2202 // s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
2205 static void hl_decode_mb(H264Context *h){
2206 MpegEncContext * const s = &h->s;
2207 const int mb_x= s->mb_x;
2208 const int mb_y= s->mb_y;
2209 const int mb_xy= mb_x + mb_y*s->mb_stride;
2210 const int mb_type= s->current_picture.mb_type[mb_xy];
2211 uint8_t *dest_y, *dest_cb, *dest_cr;
2212 int linesize, uvlinesize /*dct_offset*/;
2221 dest_y = s->current_picture.data[0] + (mb_y * 16* s->linesize ) + mb_x * 16;
2222 dest_cb = s->current_picture.data[1] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2223 dest_cr = s->current_picture.data[2] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2225 if (h->mb_field_decoding_flag) {
2226 linesize = s->linesize * 2;
2227 uvlinesize = s->uvlinesize * 2;
2228 if(mb_y&1){ //FIXME move out of this func?
2229 dest_y -= s->linesize*15;
2230 dest_cb-= s->linesize*7;
2231 dest_cr-= s->linesize*7;
2234 linesize = s->linesize;
2235 uvlinesize = s->uvlinesize;
2236 // dct_offset = s->linesize * 16;
2239 if(IS_INTRA(mb_type)){
2240 if(!(s->flags&CODEC_FLAG_GRAY)){
2241 h->pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
2242 h->pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
2245 if(IS_INTRA4x4(mb_type)){
2247 for(i=0; i<16; i++){
2248 uint8_t * const ptr= dest_y + h->block_offset[i];
2249 uint8_t *topright= ptr + 4 - linesize;
2250 const int topright_avail= (h->topright_samples_available<<i)&0x8000;
2251 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2254 if(!topright_avail){
2255 tr= ptr[3 - linesize]*0x01010101;
2256 topright= (uint8_t*) &tr;
2259 h->pred4x4[ dir ](ptr, topright, linesize);
2260 if(h->non_zero_count_cache[ scan8[i] ]){
2261 if(s->codec_id == CODEC_ID_H264)
2262 h264_add_idct_c(ptr, h->mb + i*16, linesize);
2264 svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
2269 h->pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
2270 if(s->codec_id == CODEC_ID_H264)
2271 h264_luma_dc_dequant_idct_c(h->mb, s->qscale);
2273 svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
2275 }else if(s->codec_id == CODEC_ID_H264){
2276 hl_motion(h, dest_y, dest_cb, dest_cr,
2277 s->dsp.put_h264_qpel_pixels_tab, s->dsp.put_h264_chroma_pixels_tab,
2278 s->dsp.avg_h264_qpel_pixels_tab, s->dsp.avg_h264_chroma_pixels_tab);
2282 if(!IS_INTRA4x4(mb_type)){
2283 if(s->codec_id == CODEC_ID_H264){
2284 for(i=0; i<16; i++){
2285 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
2286 uint8_t * const ptr= dest_y + h->block_offset[i];
2287 h264_add_idct_c(ptr, h->mb + i*16, linesize);
2291 for(i=0; i<16; i++){
2292 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
2293 uint8_t * const ptr= dest_y + h->block_offset[i];
2294 svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
2300 if(!(s->flags&CODEC_FLAG_GRAY)){
2301 chroma_dc_dequant_idct_c(h->mb + 16*16, h->chroma_qp);
2302 chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp);
2303 if(s->codec_id == CODEC_ID_H264){
2304 for(i=16; i<16+4; i++){
2305 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2306 uint8_t * const ptr= dest_cb + h->block_offset[i];
2307 h264_add_idct_c(ptr, h->mb + i*16, uvlinesize);
2310 for(i=20; i<20+4; i++){
2311 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2312 uint8_t * const ptr= dest_cr + h->block_offset[i];
2313 h264_add_idct_c(ptr, h->mb + i*16, uvlinesize);
2317 for(i=16; i<16+4; i++){
2318 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2319 uint8_t * const ptr= dest_cb + h->block_offset[i];
2320 svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
2323 for(i=20; i<20+4; i++){
2324 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2325 uint8_t * const ptr= dest_cr + h->block_offset[i];
2326 svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
2333 static void decode_mb_cabac(H264Context *h){
2334 // MpegEncContext * const s = &h->s;
2338 * fills the default_ref_list.
2340 static int fill_default_ref_list(H264Context *h){
2341 MpegEncContext * const s = &h->s;
2343 Picture sorted_short_ref[16];
2345 if(h->slice_type==B_TYPE){
2349 for(out_i=0; out_i<h->short_ref_count; out_i++){
2353 for(i=0; i<h->short_ref_count; i++){
2354 const int poc= h->short_ref[i]->poc;
2355 if(poc > limit && poc < best_poc){
2361 assert(best_i != -1);
2364 sorted_short_ref[out_i]= *h->short_ref[best_i];
2368 if(s->picture_structure == PICT_FRAME){
2369 if(h->slice_type==B_TYPE){
2370 const int current_poc= s->current_picture_ptr->poc;
2373 for(list=0; list<2; list++){
2376 for(i=0; i<h->short_ref_count && index < h->ref_count[list]; i++){
2377 const int i2= list ? h->short_ref_count - i - 1 : i;
2378 const int poc= sorted_short_ref[i2].poc;
2380 if(sorted_short_ref[i2].reference != 3) continue; //FIXME refernce field shit
2382 if((list==1 && poc > current_poc) || (list==0 && poc < current_poc)){
2383 h->default_ref_list[list][index ]= sorted_short_ref[i2];
2384 h->default_ref_list[list][index++].pic_id= sorted_short_ref[i2].frame_num;
2388 for(i=0; i<h->long_ref_count && index < h->ref_count[ list ]; i++){
2389 if(h->long_ref[i]->reference != 3) continue;
2391 h->default_ref_list[ list ][index ]= *h->long_ref[i];
2392 h->default_ref_list[ list ][index++].pic_id= i;;
2395 if(h->long_ref_count > 1 && h->short_ref_count==0){
2396 Picture temp= h->default_ref_list[1][0];
2397 h->default_ref_list[1][0] = h->default_ref_list[1][1];
2398 h->default_ref_list[1][0] = temp;
2401 if(index < h->ref_count[ list ])
2402 memset(&h->default_ref_list[list][index], 0, sizeof(Picture)*(h->ref_count[ list ] - index));
2406 for(i=0; i<h->short_ref_count && index < h->ref_count[0]; i++){
2407 if(h->short_ref[i]->reference != 3) continue; //FIXME refernce field shit
2408 h->default_ref_list[0][index ]= *h->short_ref[i];
2409 h->default_ref_list[0][index++].pic_id= h->short_ref[i]->frame_num;
2411 for(i=0; i<h->long_ref_count && index < h->ref_count[0]; i++){
2412 if(h->long_ref[i]->reference != 3) continue;
2413 h->default_ref_list[0][index ]= *h->long_ref[i];
2414 h->default_ref_list[0][index++].pic_id= i;;
2416 if(index < h->ref_count[0])
2417 memset(&h->default_ref_list[0][index], 0, sizeof(Picture)*(h->ref_count[0] - index));
2420 if(h->slice_type==B_TYPE){
2422 //FIXME second field balh
2428 static int decode_ref_pic_list_reordering(H264Context *h){
2429 MpegEncContext * const s = &h->s;
2432 if(h->slice_type==I_TYPE || h->slice_type==SI_TYPE) return 0; //FIXME move beofre func
2434 for(list=0; list<2; list++){
2435 memcpy(h->ref_list[list], h->default_ref_list[list], sizeof(Picture)*h->ref_count[list]);
2437 if(get_bits1(&s->gb)){
2438 int pred= h->curr_pic_num;
2441 for(index=0; ; index++){
2442 int reordering_of_pic_nums_idc= get_ue_golomb(&s->gb);
2447 if(index >= h->ref_count[list]){
2448 fprintf(stderr, "reference count overflow\n");
2452 if(reordering_of_pic_nums_idc<3){
2453 if(reordering_of_pic_nums_idc<2){
2454 const int abs_diff_pic_num= get_ue_golomb(&s->gb) + 1;
2456 if(abs_diff_pic_num >= h->max_pic_num){
2457 fprintf(stderr, "abs_diff_pic_num overflow\n");
2461 if(reordering_of_pic_nums_idc == 0) pred-= abs_diff_pic_num;
2462 else pred+= abs_diff_pic_num;
2463 pred &= h->max_pic_num - 1;
2465 for(i= h->ref_count[list]-1; i>=index; i--){
2466 if(h->ref_list[list][i].pic_id == pred && h->ref_list[list][i].long_ref==0)
2470 pic_id= get_ue_golomb(&s->gb); //long_term_pic_idx
2472 for(i= h->ref_count[list]-1; i>=index; i--){
2473 if(h->ref_list[list][i].pic_id == pic_id && h->ref_list[list][i].long_ref==1)
2479 fprintf(stderr, "reference picture missing during reorder\n");
2480 memset(&h->ref_list[list][index], 0, sizeof(Picture)); //FIXME
2481 }else if(i > index){
2482 Picture tmp= h->ref_list[list][i];
2483 for(; i>index; i--){
2484 h->ref_list[list][i]= h->ref_list[list][i-1];
2486 h->ref_list[list][index]= tmp;
2488 }else if(reordering_of_pic_nums_idc==3)
2491 fprintf(stderr, "illegal reordering_of_pic_nums_idc\n");
2497 if(h->slice_type!=B_TYPE) break;
2502 static int pred_weight_table(H264Context *h){
2503 MpegEncContext * const s = &h->s;
2506 h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
2507 h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
2509 for(list=0; list<2; list++){
2510 for(i=0; i<h->ref_count[list]; i++){
2511 int luma_weight_flag, chroma_weight_flag;
2513 luma_weight_flag= get_bits1(&s->gb);
2514 if(luma_weight_flag){
2515 h->luma_weight[list][i]= get_se_golomb(&s->gb);
2516 h->luma_offset[list][i]= get_se_golomb(&s->gb);
2519 chroma_weight_flag= get_bits1(&s->gb);
2520 if(chroma_weight_flag){
2523 h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
2524 h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
2528 if(h->slice_type != B_TYPE) break;
2534 * instantaneos decoder refresh.
2536 static void idr(H264Context *h){
2539 for(i=0; i<h->long_ref_count; i++){
2540 h->long_ref[i]->reference=0;
2541 h->long_ref[i]= NULL;
2543 h->long_ref_count=0;
2545 for(i=0; i<h->short_ref_count; i++){
2546 h->short_ref[i]->reference=0;
2547 h->short_ref[i]= NULL;
2549 h->short_ref_count=0;
2554 * @return the removed picture or NULL if an error occures
2556 static Picture * remove_short(H264Context *h, int frame_num){
2557 MpegEncContext * const s = &h->s;
2560 if(s->avctx->debug&FF_DEBUG_MMCO)
2561 printf("remove short %d count %d\n", frame_num, h->short_ref_count);
2563 for(i=0; i<h->short_ref_count; i++){
2564 Picture *pic= h->short_ref[i];
2565 if(s->avctx->debug&FF_DEBUG_MMCO)
2566 printf("%d %d %p\n", i, pic->frame_num, pic);
2567 if(pic->frame_num == frame_num){
2568 h->short_ref[i]= NULL;
2569 memmove(&h->short_ref[i], &h->short_ref[i+1], (h->short_ref_count - i - 1)*sizeof(Picture*));
2570 h->short_ref_count--;
2579 * @return the removed picture or NULL if an error occures
2581 static Picture * remove_long(H264Context *h, int i){
2584 if(i >= h->long_ref_count) return NULL;
2585 pic= h->long_ref[i];
2586 if(pic==NULL) return NULL;
2588 h->long_ref[i]= NULL;
2589 memmove(&h->long_ref[i], &h->long_ref[i+1], (h->long_ref_count - i - 1)*sizeof(Picture*));
2590 h->long_ref_count--;
2596 * Executes the reference picture marking (memory management control operations).
2598 static int execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){
2599 MpegEncContext * const s = &h->s;
2601 int current_is_long=0;
2604 if((s->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0)
2605 printf("no mmco here\n");
2607 for(i=0; i<mmco_count; i++){
2608 if(s->avctx->debug&FF_DEBUG_MMCO)
2609 printf("mmco:%d %d %d\n", h->mmco[i].opcode, h->mmco[i].short_frame_num, h->mmco[i].long_index);
2611 switch(mmco[i].opcode){
2612 case MMCO_SHORT2UNUSED:
2613 pic= remove_short(h, mmco[i].short_frame_num);
2614 if(pic==NULL) return -1;
2617 case MMCO_SHORT2LONG:
2618 pic= remove_long(h, mmco[i].long_index);
2619 if(pic) pic->reference=0;
2621 h->long_ref[ mmco[i].long_index ]= remove_short(h, mmco[i].short_frame_num);
2622 h->long_ref[ mmco[i].long_index ]->long_ref=1;
2624 case MMCO_LONG2UNUSED:
2625 pic= remove_long(h, mmco[i].long_index);
2626 if(pic==NULL) return -1;
2630 pic= remove_long(h, mmco[i].long_index);
2631 if(pic) pic->reference=0;
2633 h->long_ref[ mmco[i].long_index ]= s->current_picture_ptr;
2634 h->long_ref[ mmco[i].long_index ]->long_ref=1;
2635 h->long_ref_count++;
2639 case MMCO_SET_MAX_LONG:
2640 assert(mmco[i].long_index <= 16);
2641 while(mmco[i].long_index < h->long_ref_count){
2642 pic= remove_long(h, mmco[i].long_index);
2645 while(mmco[i].long_index > h->long_ref_count){
2646 h->long_ref[ h->long_ref_count++ ]= NULL;
2650 while(h->short_ref_count){
2651 pic= remove_short(h, h->short_ref[0]->frame_num);
2654 while(h->long_ref_count){
2655 pic= remove_long(h, h->long_ref_count-1);
2663 if(!current_is_long){
2664 pic= remove_short(h, s->current_picture_ptr->frame_num);
2667 fprintf(stderr, "illegal short term buffer state detected\n");
2670 if(h->short_ref_count)
2671 memmove(&h->short_ref[1], &h->short_ref[0], h->short_ref_count*sizeof(Picture*));
2673 h->short_ref[0]= s->current_picture_ptr;
2674 h->short_ref[0]->long_ref=0;
2675 h->short_ref_count++;
2681 static int decode_ref_pic_marking(H264Context *h){
2682 MpegEncContext * const s = &h->s;
2685 if(h->nal_unit_type == NAL_IDR_SLICE){ //FIXME fields
2686 s->broken_link= get_bits1(&s->gb) -1;
2687 h->mmco[0].long_index= get_bits1(&s->gb) - 1; // current_long_term_idx
2688 if(h->mmco[0].long_index == -1)
2691 h->mmco[0].opcode= MMCO_LONG;
2695 if(get_bits1(&s->gb)){ // adaptive_ref_pic_marking_mode_flag
2696 for(i= h->mmco_index; i<MAX_MMCO_COUNT; i++) {
2697 MMCOOpcode opcode= get_ue_golomb(&s->gb);;
2699 h->mmco[i].opcode= opcode;
2700 if(opcode==MMCO_SHORT2UNUSED || opcode==MMCO_SHORT2LONG){
2701 h->mmco[i].short_frame_num= (h->frame_num - get_ue_golomb(&s->gb) - 1) & ((1<<h->sps.log2_max_frame_num)-1); //FIXME fields
2702 /* if(h->mmco[i].short_frame_num >= h->short_ref_count || h->short_ref[ h->mmco[i].short_frame_num ] == NULL){
2703 fprintf(stderr, "illegal short ref in memory management control operation %d\n", mmco);
2707 if(opcode==MMCO_SHORT2LONG || opcode==MMCO_LONG2UNUSED || opcode==MMCO_LONG || opcode==MMCO_SET_MAX_LONG){
2708 h->mmco[i].long_index= get_ue_golomb(&s->gb);
2709 if(/*h->mmco[i].long_index >= h->long_ref_count || h->long_ref[ h->mmco[i].long_index ] == NULL*/ h->mmco[i].long_index >= 16){
2710 fprintf(stderr, "illegal long ref in memory management control operation %d\n", opcode);
2715 if(opcode > MMCO_LONG){
2716 fprintf(stderr, "illegal memory management control operation %d\n", opcode);
2722 assert(h->long_ref_count + h->short_ref_count <= h->sps.ref_frame_count);
2724 if(h->long_ref_count + h->short_ref_count == h->sps.ref_frame_count){ //FIXME fields
2725 h->mmco[0].opcode= MMCO_SHORT2UNUSED;
2726 h->mmco[0].short_frame_num= h->short_ref[ h->short_ref_count - 1 ]->frame_num;
2736 static int init_poc(H264Context *h){
2737 MpegEncContext * const s = &h->s;
2738 const int max_frame_num= 1<<h->sps.log2_max_frame_num;
2741 if(h->nal_unit_type == NAL_IDR_SLICE){
2742 h->frame_num_offset= 0;
2744 if(h->frame_num < h->prev_frame_num)
2745 h->frame_num_offset= h->prev_frame_num_offset + max_frame_num;
2747 h->frame_num_offset= h->prev_frame_num_offset;
2750 if(h->sps.poc_type==0){
2751 const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
2753 if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
2754 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
2755 else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
2756 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
2758 h->poc_msb = h->prev_poc_msb;
2759 //printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
2761 field_poc[1] = h->poc_msb + h->poc_lsb;
2762 if(s->picture_structure == PICT_FRAME)
2763 field_poc[1] += h->delta_poc_bottom;
2764 }else if(h->sps.poc_type==1){
2765 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
2768 if(h->sps.poc_cycle_length != 0)
2769 abs_frame_num = h->frame_num_offset + h->frame_num;
2773 if(h->nal_ref_idc==0 && abs_frame_num > 0)
2776 expected_delta_per_poc_cycle = 0;
2777 for(i=0; i < h->sps.poc_cycle_length; i++)
2778 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
2780 if(abs_frame_num > 0){
2781 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
2782 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
2784 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
2785 for(i = 0; i <= frame_num_in_poc_cycle; i++)
2786 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
2790 if(h->nal_ref_idc == 0)
2791 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
2793 field_poc[0] = expectedpoc + h->delta_poc[0];
2794 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
2796 if(s->picture_structure == PICT_FRAME)
2797 field_poc[1] += h->delta_poc[1];
2800 if(h->nal_unit_type == NAL_IDR_SLICE){
2803 if(h->nal_ref_idc) poc= 2*(h->frame_num_offset + h->frame_num);
2804 else poc= 2*(h->frame_num_offset + h->frame_num) - 1;
2810 if(s->picture_structure != PICT_BOTTOM_FIELD)
2811 s->current_picture_ptr->field_poc[0]= field_poc[0];
2812 if(s->picture_structure != PICT_TOP_FIELD)
2813 s->current_picture_ptr->field_poc[1]= field_poc[1];
2814 if(s->picture_structure == PICT_FRAME) // FIXME field pix?
2815 s->current_picture_ptr->poc= FFMIN(field_poc[0], field_poc[1]);
2821 * decodes a slice header.
2822 * this will allso call MPV_common_init() and frame_start() as needed
2824 static int decode_slice_header(H264Context *h){
2825 MpegEncContext * const s = &h->s;
2826 int first_mb_in_slice, pps_id;
2827 int num_ref_idx_active_override_flag;
2828 static const uint8_t slice_type_map[5]= {P_TYPE, B_TYPE, I_TYPE, SP_TYPE, SI_TYPE};
2831 s->current_picture.reference= h->nal_ref_idc != 0;
2833 first_mb_in_slice= get_ue_golomb(&s->gb);
2835 h->slice_type= get_ue_golomb(&s->gb);
2836 if(h->slice_type > 9){
2837 fprintf(stderr, "slice type too large (%d) at %d %d\n", h->slice_type, s->mb_x, s->mb_y);
2839 if(h->slice_type > 4){
2841 h->slice_type_fixed=1;
2843 h->slice_type_fixed=0;
2845 h->slice_type= slice_type_map[ h->slice_type ];
2847 s->pict_type= h->slice_type; // to make a few old func happy, its wrong though
2849 pps_id= get_ue_golomb(&s->gb);
2851 fprintf(stderr, "pps_id out of range\n");
2854 h->pps= h->pps_buffer[pps_id];
2855 if(h->pps.slice_group_count == 0){
2856 fprintf(stderr, "non existing PPS referenced\n");
2860 h->sps= h->sps_buffer[ h->pps.sps_id ];
2861 if(h->sps.log2_max_frame_num == 0){
2862 fprintf(stderr, "non existing SPS referenced\n");
2866 s->mb_width= h->sps.mb_width;
2867 s->mb_height= h->sps.mb_height;
2869 h->b_stride= s->mb_width*4;
2870 h->b8_stride= s->mb_width*2;
2872 s->mb_x = first_mb_in_slice % s->mb_width;
2873 s->mb_y = first_mb_in_slice / s->mb_width; //FIXME AFFW
2875 s->width = 16*s->mb_width - 2*(h->sps.crop_left + h->sps.crop_right );
2876 if(h->sps.frame_mbs_only_flag)
2877 s->height= 16*s->mb_height - 2*(h->sps.crop_top + h->sps.crop_bottom);
2879 s->height= 16*s->mb_height - 4*(h->sps.crop_top + h->sps.crop_bottom); //FIXME recheck
2881 if(s->aspected_height) //FIXME emms at end of slice ?
2882 new_aspect= h->sps.sar_width*s->width / (float)(s->height*h->sps.sar_height);
2886 if (s->context_initialized
2887 && ( s->width != s->avctx->width || s->height != s->avctx->height
2888 || ABS(new_aspect - s->avctx->aspect_ratio) > 0.001)) {
2892 if (!s->context_initialized) {
2893 if (MPV_common_init(s) < 0)
2898 s->avctx->width = s->width;
2899 s->avctx->height = s->height;
2900 s->avctx->aspect_ratio= new_aspect;
2903 if(first_mb_in_slice == 0){
2907 s->current_picture_ptr->frame_num= //FIXME frame_num cleanup
2908 h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
2910 if(h->sps.frame_mbs_only_flag){
2911 s->picture_structure= PICT_FRAME;
2913 if(get_bits1(&s->gb)) //field_pic_flag
2914 s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
2916 s->picture_structure= PICT_FRAME;
2919 if(s->picture_structure==PICT_FRAME){
2920 h->curr_pic_num= h->frame_num;
2921 h->max_pic_num= 1<< h->sps.log2_max_frame_num;
2923 h->curr_pic_num= 2*h->frame_num;
2924 h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
2927 if(h->nal_unit_type == NAL_IDR_SLICE){
2928 int idr_pic_id= get_ue_golomb(&s->gb);
2931 if(h->sps.poc_type==0){
2932 h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
2934 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
2935 h->delta_poc_bottom= get_se_golomb(&s->gb);
2939 if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
2940 h->delta_poc[0]= get_se_golomb(&s->gb);
2942 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
2943 h->delta_poc[1]= get_se_golomb(&s->gb);
2948 if(h->pps.redundant_pic_cnt_present){
2949 h->redundant_pic_count= get_ue_golomb(&s->gb);
2952 //set defaults, might be overriden a few line later
2953 h->ref_count[0]= h->pps.ref_count[0];
2954 h->ref_count[1]= h->pps.ref_count[1];
2956 if(h->slice_type == P_TYPE || h->slice_type == SP_TYPE || h->slice_type == B_TYPE){
2957 if(h->slice_type == B_TYPE){
2958 h->direct_spatial_mv_pred= get_bits1(&s->gb);
2960 num_ref_idx_active_override_flag= get_bits1(&s->gb);
2962 if(num_ref_idx_active_override_flag){
2963 h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
2964 if(h->slice_type==B_TYPE)
2965 h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
2967 if(h->ref_count[0] > 32 || h->ref_count[1] > 32){
2968 fprintf(stderr, "reference overflow\n");
2974 if(first_mb_in_slice == 0){
2975 fill_default_ref_list(h);
2978 decode_ref_pic_list_reordering(h);
2980 if( (h->pps.weighted_pred && (h->slice_type == P_TYPE || h->slice_type == SP_TYPE ))
2981 || (h->pps.weighted_bipred_idc==1 && h->slice_type==B_TYPE ) )
2982 pred_weight_table(h);
2984 if(s->current_picture.reference)
2985 decode_ref_pic_marking(h);
2988 s->qscale = h->pps.init_qp + get_se_golomb(&s->gb); //slice_qp_delta
2989 //FIXME qscale / qp ... stuff
2990 if(h->slice_type == SP_TYPE){
2991 int sp_for_switch_flag= get_bits1(&s->gb);
2993 if(h->slice_type==SP_TYPE || h->slice_type == SI_TYPE){
2994 int slice_qs_delta= get_se_golomb(&s->gb);
2997 if( h->pps.deblocking_filter_parameters_present ) {
2998 h->disable_deblocking_filter_idc= get_ue_golomb(&s->gb);
2999 if( h->disable_deblocking_filter_idc != 1 ) {
3000 h->slice_alpha_c0_offset_div2= get_se_golomb(&s->gb);
3001 h->slice_beta_offset_div2= get_se_golomb(&s->gb);
3004 h->disable_deblocking_filter_idc= 0;
3007 if( h->pps.num_slice_groups > 1 && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
3008 slice_group_change_cycle= get_bits(&s->gb, ?);
3011 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
3012 printf("mb:%d %c pps:%d frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d\n",
3014 av_get_pict_type_char(h->slice_type),
3015 pps_id, h->frame_num,
3016 s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
3017 h->ref_count[0], h->ref_count[1],
3019 h->disable_deblocking_filter_idc
3029 static inline int get_level_prefix(GetBitContext *gb){
3033 OPEN_READER(re, gb);
3034 UPDATE_CACHE(re, gb);
3035 buf=GET_CACHE(re, gb);
3037 log= 32 - av_log2(buf);
3039 print_bin(buf>>(32-log), log);
3040 printf("%5d %2d %3d lpr @%5d in %s get_level_prefix\n", buf>>(32-log), log, log-1, get_bits_count(gb), __FILE__);
3043 LAST_SKIP_BITS(re, gb, log);
3044 CLOSE_READER(re, gb);
3050 * decodes a residual block.
3051 * @param n block index
3052 * @param scantable scantable
3053 * @param max_coeff number of coefficients in the block
3054 * @return <0 if an error occured
3056 static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, int qp, int max_coeff){
3057 MpegEncContext * const s = &h->s;
3058 const uint16_t *qmul= dequant_coeff[qp];
3059 static const int coeff_token_table_index[17]= {0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3};
3060 int level[16], run[16];
3061 int suffix_length, zeros_left, coeff_num, coeff_token, total_coeff, i, trailing_ones;
3063 //FIXME put trailing_onex into the context
3065 if(n == CHROMA_DC_BLOCK_INDEX){
3066 coeff_token= get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1);
3067 total_coeff= coeff_token>>2;
3069 if(n == LUMA_DC_BLOCK_INDEX){
3070 total_coeff= pred_non_zero_count(h, 0);
3071 coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
3072 total_coeff= coeff_token>>2;
3074 total_coeff= pred_non_zero_count(h, n);
3075 coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
3076 total_coeff= coeff_token>>2;
3077 h->non_zero_count_cache[ scan8[n] ]= total_coeff;
3081 //FIXME set last_non_zero?
3086 trailing_ones= coeff_token&3;
3087 tprintf("trailing:%d, total:%d\n", trailing_ones, total_coeff);
3088 assert(total_coeff<=16);
3090 for(i=0; i<trailing_ones; i++){
3091 level[i]= 1 - 2*get_bits1(gb);
3094 suffix_length= total_coeff > 10 && trailing_ones < 3;
3096 for(; i<total_coeff; i++){
3097 const int prefix= get_level_prefix(gb);
3098 int level_code, mask;
3100 if(prefix<14){ //FIXME try to build a large unified VLC table for all this
3102 level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
3104 level_code= (prefix<<suffix_length); //part
3105 }else if(prefix==14){
3107 level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
3109 level_code= prefix + get_bits(gb, 4); //part
3110 }else if(prefix==15){
3111 level_code= (prefix<<suffix_length) + get_bits(gb, 12); //part
3112 if(suffix_length==0) level_code+=15; //FIXME doesnt make (much)sense
3114 fprintf(stderr, "prefix too large at %d %d\n", s->mb_x, s->mb_y);
3118 if(i==trailing_ones && i<3) level_code+= 2; //FIXME split first iteration
3120 mask= -(level_code&1);
3121 level[i]= (((2+level_code)>>1) ^ mask) - mask;
3123 if(suffix_length==0) suffix_length=1; //FIXME split first iteration
3126 if(ABS(level[i]) > (3<<(suffix_length-1)) && suffix_length<6) suffix_length++;
3128 if((2+level_code)>>1) > (3<<(suffix_length-1)) && suffix_length<6) suffix_length++;
3129 ? == prefix > 2 or sth
3131 tprintf("level: %d suffix_length:%d\n", level[i], suffix_length);
3134 if(total_coeff == max_coeff)
3137 if(n == CHROMA_DC_BLOCK_INDEX)
3138 zeros_left= get_vlc2(gb, chroma_dc_total_zeros_vlc[ total_coeff-1 ].table, CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1);
3140 zeros_left= get_vlc2(gb, total_zeros_vlc[ total_coeff-1 ].table, TOTAL_ZEROS_VLC_BITS, 1);
3143 for(i=0; i<total_coeff-1; i++){
3146 else if(zeros_left < 7){
3147 run[i]= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
3149 run[i]= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
3151 zeros_left -= run[i];
3155 fprintf(stderr, "negative number of zero coeffs at %d %d\n", s->mb_x, s->mb_y);
3159 for(; i<total_coeff-1; i++){
3167 for(i=total_coeff-1; i>=0; i--){ //FIXME merge into rundecode?
3170 coeff_num += run[i] + 1; //FIXME add 1 earlier ?
3171 j= scantable[ coeff_num ];
3176 for(i=total_coeff-1; i>=0; i--){ //FIXME merge into rundecode?
3179 coeff_num += run[i] + 1; //FIXME add 1 earlier ?
3180 j= scantable[ coeff_num ];
3182 block[j]= level[i] * qmul[j];
3183 // printf("%d %d ", block[j], qmul[j]);
3190 * decodes a macroblock
3191 * @returns 0 if ok, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
3193 static int decode_mb(H264Context *h){
3194 MpegEncContext * const s = &h->s;
3195 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
3196 int mb_type, partition_count, cbp;
3198 s->dsp.clear_blocks(h->mb); //FIXME avoid if allready clear (move after skip handlong?
3200 tprintf("pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
3202 if(h->slice_type != I_TYPE && h->slice_type != SI_TYPE){
3203 if(s->mb_skip_run==-1)
3204 s->mb_skip_run= get_ue_golomb(&s->gb);
3206 if (s->mb_skip_run--) {
3210 mb_type= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P1L0;
3212 memset(h->non_zero_count[mb_xy], 0, 16);
3213 memset(h->non_zero_count_cache + 8, 0, 8*5); //FIXME ugly, remove pfui
3215 if(h->sps.mb_aff && s->mb_skip_run==0 && (s->mb_y&1)==0){
3216 h->mb_field_decoding_flag= get_bits1(&s->gb);
3219 if(h->mb_field_decoding_flag)
3220 mb_type|= MB_TYPE_INTERLACED;
3222 fill_caches(h, mb_type); //FIXME check what is needed and what not ...
3223 pred_pskip_motion(h, &mx, &my);
3224 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);
3225 fill_rectangle( h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mx,my), 4);
3226 write_back_motion(h, mb_type);
3228 s->current_picture.mb_type[mb_xy]= mb_type; //FIXME SKIP type
3229 h->slice_table[ mb_xy ]= h->slice_num;
3231 h->prev_mb_skiped= 1;
3235 if(h->sps.mb_aff /* && !field pic FIXME needed? */){
3237 h->mb_field_decoding_flag = get_bits1(&s->gb);
3239 h->mb_field_decoding_flag=0; //FIXME som ed note ?!
3241 h->prev_mb_skiped= 0;
3243 mb_type= get_ue_golomb(&s->gb);
3244 if(h->slice_type == B_TYPE){
3246 partition_count= b_mb_type_info[mb_type].partition_count;
3247 mb_type= b_mb_type_info[mb_type].type;
3250 goto decode_intra_mb;
3252 }else if(h->slice_type == P_TYPE /*|| h->slice_type == SP_TYPE */){
3254 partition_count= p_mb_type_info[mb_type].partition_count;
3255 mb_type= p_mb_type_info[mb_type].type;
3258 goto decode_intra_mb;
3261 assert(h->slice_type == I_TYPE);
3264 fprintf(stderr, "mb_type %d in %c slice to large at %d %d\n", mb_type, av_get_pict_type_char(h->slice_type), s->mb_x, s->mb_y);
3268 cbp= i_mb_type_info[mb_type].cbp;
3269 h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode;
3270 mb_type= i_mb_type_info[mb_type].type;
3273 if(h->mb_field_decoding_flag)
3274 mb_type |= MB_TYPE_INTERLACED;
3276 s->current_picture.mb_type[mb_xy]= mb_type;
3277 h->slice_table[ mb_xy ]= h->slice_num;
3279 if(IS_INTRA_PCM(mb_type)){
3283 // we assume these blocks are very rare so we dont optimize it
3284 align_get_bits(&s->gb);
3286 ptr= s->gb.buffer + get_bits_count(&s->gb);
3288 for(y=0; y<16; y++){
3289 const int index= 4*(y&3) + 64*(y>>2);
3290 for(x=0; x<16; x++){
3291 h->mb[index + (x&3) + 16*(x>>2)]= *(ptr++);
3295 const int index= 256 + 4*(y&3) + 32*(y>>2);
3297 h->mb[index + (x&3) + 16*(x>>2)]= *(ptr++);
3301 const int index= 256 + 64 + 4*(y&3) + 32*(y>>2);
3303 h->mb[index + (x&3) + 16*(x>>2)]= *(ptr++);
3307 skip_bits(&s->gb, 384); //FIXME check /fix the bitstream readers
3309 memset(h->non_zero_count[mb_xy], 16, 16);
3314 fill_caches(h, mb_type);
3317 if(IS_INTRA(mb_type)){
3318 // init_top_left_availability(h);
3319 if(IS_INTRA4x4(mb_type)){
3322 // fill_intra4x4_pred_table(h);
3323 for(i=0; i<16; i++){
3324 const int mode_coded= !get_bits1(&s->gb);
3325 const int predicted_mode= pred_intra_mode(h, i);
3329 const int rem_mode= get_bits(&s->gb, 3);
3330 if(rem_mode<predicted_mode)
3335 mode= predicted_mode;
3338 h->intra4x4_pred_mode_cache[ scan8[i] ] = mode;
3340 write_back_intra_pred_mode(h);
3341 if( check_intra4x4_pred_mode(h) < 0)
3344 h->intra16x16_pred_mode= check_intra_pred_mode(h, h->intra16x16_pred_mode);
3345 if(h->intra16x16_pred_mode < 0)
3348 h->chroma_pred_mode= get_ue_golomb(&s->gb);
3350 h->chroma_pred_mode= check_intra_pred_mode(h, h->chroma_pred_mode);
3351 if(h->chroma_pred_mode < 0)
3353 }else if(partition_count==4){
3354 int i, j, sub_partition_count[4], list, ref[2][4];
3356 if(h->slice_type == B_TYPE){
3358 h->sub_mb_type[i]= get_ue_golomb(&s->gb);
3359 if(h->sub_mb_type[i] >=13){
3360 fprintf(stderr, "B sub_mb_type %d out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y);
3363 sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
3364 h->sub_mb_type[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].type;
3367 assert(h->slice_type == P_TYPE || h->slice_type == SP_TYPE); //FIXME SP correct ?
3369 h->sub_mb_type[i]= get_ue_golomb(&s->gb);
3370 if(h->sub_mb_type[i] >=4){
3371 fprintf(stderr, "P sub_mb_type %d out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y);
3374 sub_partition_count[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
3375 h->sub_mb_type[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].type;
3379 for(list=0; list<2; list++){
3380 const int ref_count= IS_REF0(mb_type) ? 1 : h->ref_count[list];
3381 if(ref_count == 0) continue;
3383 if(IS_DIR(h->sub_mb_type[i], 0, list) && !IS_DIRECT(h->sub_mb_type[i])){
3384 ref[list][i] = get_te0_golomb(&s->gb, ref_count); //FIXME init to 0 before and skip?
3392 for(list=0; list<2; list++){
3393 const int ref_count= IS_REF0(mb_type) ? 1 : h->ref_count[list];
3394 if(ref_count == 0) continue;
3397 h->ref_cache[list][ scan8[4*i] ]=h->ref_cache[list][ scan8[4*i]+1 ]=
3398 h->ref_cache[list][ scan8[4*i]+8 ]=h->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i];
3400 if(IS_DIR(h->sub_mb_type[i], 0, list) && !IS_DIRECT(h->sub_mb_type[i])){
3401 const int sub_mb_type= h->sub_mb_type[i];
3402 const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1;
3403 for(j=0; j<sub_partition_count[i]; j++){
3405 const int index= 4*i + block_width*j;
3406 int16_t (* mv_cache)[2]= &h->mv_cache[list][ scan8[index] ];
3407 pred_motion(h, index, block_width, list, h->ref_cache[list][ scan8[index] ], &mx, &my);
3408 mx += get_se_golomb(&s->gb);
3409 my += get_se_golomb(&s->gb);
3410 tprintf("final mv:%d %d\n", mx, my);
3412 if(IS_SUB_8X8(sub_mb_type)){
3413 mv_cache[ 0 ][0]= mv_cache[ 1 ][0]=
3414 mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx;
3415 mv_cache[ 0 ][1]= mv_cache[ 1 ][1]=
3416 mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my;
3417 }else if(IS_SUB_8X4(sub_mb_type)){
3418 mv_cache[ 0 ][0]= mv_cache[ 1 ][0]= mx;
3419 mv_cache[ 0 ][1]= mv_cache[ 1 ][1]= my;
3420 }else if(IS_SUB_4X8(sub_mb_type)){
3421 mv_cache[ 0 ][0]= mv_cache[ 8 ][0]= mx;
3422 mv_cache[ 0 ][1]= mv_cache[ 8 ][1]= my;
3424 assert(IS_SUB_4X4(sub_mb_type));
3425 mv_cache[ 0 ][0]= mx;
3426 mv_cache[ 0 ][1]= my;
3430 uint32_t *p= (uint32_t *)&h->mv_cache[list][ scan8[4*i] ][0];
3436 }else if(!IS_DIRECT(mb_type)){
3437 int list, mx, my, i;
3438 //FIXME we should set ref_idx_l? to 0 if we use that later ...
3439 if(IS_16X16(mb_type)){
3440 for(list=0; list<2; list++){
3441 if(h->ref_count[0]>0){
3442 if(IS_DIR(mb_type, 0, list)){
3443 const int val= get_te0_golomb(&s->gb, h->ref_count[list]);
3444 fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, val, 1);
3448 for(list=0; list<2; list++){
3449 if(IS_DIR(mb_type, 0, list)){
3450 pred_motion(h, 0, 4, list, h->ref_cache[list][ scan8[0] ], &mx, &my);
3451 mx += get_se_golomb(&s->gb);
3452 my += get_se_golomb(&s->gb);
3453 tprintf("final mv:%d %d\n", mx, my);
3455 fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4);
3459 else if(IS_16X8(mb_type)){
3460 for(list=0; list<2; list++){
3461 if(h->ref_count[list]>0){
3463 if(IS_DIR(mb_type, i, list)){
3464 const int val= get_te0_golomb(&s->gb, h->ref_count[list]);
3465 fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 1);
3470 for(list=0; list<2; list++){
3472 if(IS_DIR(mb_type, i, list)){
3473 pred_16x8_motion(h, 8*i, list, h->ref_cache[list][scan8[0] + 16*i], &mx, &my);
3474 mx += get_se_golomb(&s->gb);
3475 my += get_se_golomb(&s->gb);
3476 tprintf("final mv:%d %d\n", mx, my);
3478 fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx,my), 4);
3483 assert(IS_8X16(mb_type));
3484 for(list=0; list<2; list++){
3485 if(h->ref_count[list]>0){
3487 if(IS_DIR(mb_type, i, list)){ //FIXME optimize
3488 const int val= get_te0_golomb(&s->gb, h->ref_count[list]);
3489 fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 1);
3494 for(list=0; list<2; list++){
3496 if(IS_DIR(mb_type, i, list)){
3497 pred_8x16_motion(h, i*4, list, h->ref_cache[list][ scan8[0] + 2*i ], &mx, &my);
3498 mx += get_se_golomb(&s->gb);
3499 my += get_se_golomb(&s->gb);
3500 tprintf("final mv:%d %d\n", mx, my);
3502 fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx,my), 4);
3509 if(IS_INTER(mb_type))
3510 write_back_motion(h, mb_type);
3512 if(!IS_INTRA16x16(mb_type)){
3513 cbp= get_ue_golomb(&s->gb);
3515 fprintf(stderr, "cbp too large (%d) at %d %d\n", cbp, s->mb_x, s->mb_y);
3519 if(IS_INTRA4x4(mb_type))
3520 cbp= golomb_to_intra4x4_cbp[cbp];
3522 cbp= golomb_to_inter_cbp[cbp];
3525 if(cbp || IS_INTRA16x16(mb_type)){
3526 int i8x8, i4x4, chroma_idx;
3527 int chroma_qp, dquant;
3528 GetBitContext *gb= IS_INTRA(mb_type) ? h->intra_gb_ptr : h->inter_gb_ptr;
3529 const uint8_t *scan, *dc_scan;
3531 // fill_non_zero_count_cache(h);
3533 if(IS_INTERLACED(mb_type)){
3535 dc_scan= luma_dc_field_scan;
3538 dc_scan= luma_dc_zigzag_scan;
3541 dquant= get_se_golomb(&s->gb);
3543 if( dquant > 25 || dquant < -26 ){
3544 fprintf(stderr, "dquant out of range (%d) at %d %d\n", dquant, s->mb_x, s->mb_y);
3548 s->qscale += dquant;
3549 if(((unsigned)s->qscale) > 51){
3550 if(s->qscale<0) s->qscale+= 52;
3551 else s->qscale-= 52;
3554 h->chroma_qp= chroma_qp= get_chroma_qp(h, s->qscale);
3555 if(IS_INTRA16x16(mb_type)){
3556 if( decode_residual(h, h->intra_gb_ptr, h->mb, LUMA_DC_BLOCK_INDEX, dc_scan, s->qscale, 16) < 0){
3557 return -1; //FIXME continue if partotioned and other retirn -1 too
3560 assert((cbp&15) == 0 || (cbp&15) == 15);
3563 for(i8x8=0; i8x8<4; i8x8++){
3564 for(i4x4=0; i4x4<4; i4x4++){
3565 const int index= i4x4 + 4*i8x8;
3566 if( decode_residual(h, h->intra_gb_ptr, h->mb + 16*index, index, scan + 1, s->qscale, 15) < 0 ){
3572 memset(&h->non_zero_count_cache[8], 0, 8*4); //FIXME stupid & slow
3575 for(i8x8=0; i8x8<4; i8x8++){
3576 if(cbp & (1<<i8x8)){
3577 for(i4x4=0; i4x4<4; i4x4++){
3578 const int index= i4x4 + 4*i8x8;
3580 if( decode_residual(h, gb, h->mb + 16*index, index, scan, s->qscale, 16) <0 ){
3585 uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
3586 nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0;
3592 for(chroma_idx=0; chroma_idx<2; chroma_idx++)
3593 if( decode_residual(h, gb, h->mb + 256 + 16*4*chroma_idx, CHROMA_DC_BLOCK_INDEX, chroma_dc_scan, chroma_qp, 4) < 0){
3599 for(chroma_idx=0; chroma_idx<2; chroma_idx++){
3600 for(i4x4=0; i4x4<4; i4x4++){
3601 const int index= 16 + 4*chroma_idx + i4x4;
3602 if( decode_residual(h, gb, h->mb + 16*index, index, scan + 1, chroma_qp, 15) < 0){
3608 uint8_t * const nnz= &h->non_zero_count_cache[0];
3609 nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
3610 nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
3613 memset(&h->non_zero_count_cache[8], 0, 8*5);
3615 write_back_non_zero_count(h);
3620 static int decode_slice(H264Context *h){
3621 MpegEncContext * const s = &h->s;
3622 const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
3628 int ret= decode_mb(h);
3632 if(ret>=0 && h->sps.mb_aff){ //FIXME optimal? or let mb_decode decode 16x32 ?
3641 fprintf(stderr, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
3642 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);
3647 if(++s->mb_x >= s->mb_width){
3649 ff_draw_horiz_band(s, 16*s->mb_y, 16);
3650 if(++s->mb_y >= s->mb_height){
3651 tprintf("slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
3653 if(get_bits_count(&s->gb) == s->gb.size_in_bits){
3654 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);
3658 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);
3665 if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
3666 if(get_bits_count(&s->gb) == s->gb.size_in_bits){
3667 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);
3671 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);
3679 for(;s->mb_y < s->mb_height; s->mb_y++){
3680 for(;s->mb_x < s->mb_width; s->mb_x++){
3681 int ret= decode_mb(h);
3686 fprintf(stderr, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
3687 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);
3692 if(++s->mb_x >= s->mb_width){
3694 if(++s->mb_y >= s->mb_height){
3695 if(get_bits_count(s->gb) == s->gb.size_in_bits){
3696 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);
3700 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);
3707 if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
3708 if(get_bits_count(s->gb) == s->gb.size_in_bits){
3709 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);
3713 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);
3720 ff_draw_horiz_band(s, 16*s->mb_y, 16);
3723 return -1; //not reached
3726 static inline int decode_vui_parameters(H264Context *h, SPS *sps){
3727 MpegEncContext * const s = &h->s;
3728 int aspect_ratio_info_present_flag, aspect_ratio_idc;
3730 aspect_ratio_info_present_flag= get_bits1(&s->gb);
3732 if( aspect_ratio_info_present_flag ) {
3733 aspect_ratio_idc= get_bits(&s->gb, 8);
3734 if( aspect_ratio_idc == EXTENDED_SAR ) {
3735 sps->sar_width= get_bits(&s->gb, 16);
3736 sps->sar_height= get_bits(&s->gb, 16);
3737 }else if(aspect_ratio_idc < 16){
3738 sps->sar_width= pixel_aspect[aspect_ratio_idc][0];
3739 sps->sar_height= pixel_aspect[aspect_ratio_idc][1];
3741 fprintf(stderr, "illegal aspect ratio\n");
3748 // s->avctx->aspect_ratio= sar_width*s->width / (float)(s->height*sar_height);
3750 | overscan_info_present_flag |0 |u(1) |
3751 | if( overscan_info_present_flag ) | | |
3752 | overscan_appropriate_flag |0 |u(1) |
3753 | video_signal_type_present_flag |0 |u(1) |
3754 | if( video_signal_type_present_flag ) { | | |
3755 | video_format |0 |u(3) |
3756 | video_full_range_flag |0 |u(1) |
3757 | colour_description_present_flag |0 |u(1) |
3758 | if( colour_description_present_flag ) { | | |
3759 | colour_primaries |0 |u(8) |
3760 | transfer_characteristics |0 |u(8) |
3761 | matrix_coefficients |0 |u(8) |
3764 | chroma_location_info_present_flag |0 |u(1) |
3765 | if ( chroma_location_info_present_flag ) { | | |
3766 | chroma_sample_location_type_top_field |0 |ue(v) |
3767 | chroma_sample_location_type_bottom_field |0 |ue(v) |
3769 | timing_info_present_flag |0 |u(1) |
3770 | if( timing_info_present_flag ) { | | |
3771 | num_units_in_tick |0 |u(32) |
3772 | time_scale |0 |u(32) |
3773 | fixed_frame_rate_flag |0 |u(1) |
3775 | nal_hrd_parameters_present_flag |0 |u(1) |
3776 | if( nal_hrd_parameters_present_flag = = 1) | | |
3777 | hrd_parameters( ) | | |
3778 | vcl_hrd_parameters_present_flag |0 |u(1) |
3779 | if( vcl_hrd_parameters_present_flag = = 1) | | |
3780 | hrd_parameters( ) | | |
3781 | if( ( nal_hrd_parameters_present_flag = = 1 | || | |
3783 |( vcl_hrd_parameters_present_flag = = 1 ) ) | | |
3784 | low_delay_hrd_flag |0 |u(1) |
3785 | bitstream_restriction_flag |0 |u(1) |
3786 | if( bitstream_restriction_flag ) { |0 |u(1) |
3787 | motion_vectors_over_pic_boundaries_flag |0 |u(1) |
3788 | max_bytes_per_pic_denom |0 |ue(v) |
3789 | max_bits_per_mb_denom |0 |ue(v) |
3790 | log2_max_mv_length_horizontal |0 |ue(v) |
3791 | log2_max_mv_length_vertical |0 |ue(v) |
3792 | num_reorder_frames |0 |ue(v) |
3793 | max_dec_frame_buffering |0 |ue(v) |
3800 static inline int decode_seq_parameter_set(H264Context *h){
3801 MpegEncContext * const s = &h->s;
3802 int profile_idc, level_idc;
3806 profile_idc= get_bits(&s->gb, 8);
3807 get_bits1(&s->gb); //constraint_set0_flag
3808 get_bits1(&s->gb); //constraint_set1_flag
3809 get_bits1(&s->gb); //constraint_set2_flag
3810 get_bits(&s->gb, 5); // reserved
3811 level_idc= get_bits(&s->gb, 8);
3812 sps_id= get_ue_golomb(&s->gb);
3814 sps= &h->sps_buffer[ sps_id ];
3815 sps->profile_idc= profile_idc;
3816 sps->level_idc= level_idc;
3818 sps->log2_max_frame_num= get_ue_golomb(&s->gb) + 4;
3819 sps->poc_type= get_ue_golomb(&s->gb);
3821 if(sps->poc_type == 0){ //FIXME #define
3822 sps->log2_max_poc_lsb= get_ue_golomb(&s->gb) + 4;
3823 } else if(sps->poc_type == 1){//FIXME #define
3824 sps->delta_pic_order_always_zero_flag= get_bits1(&s->gb);
3825 sps->offset_for_non_ref_pic= get_se_golomb(&s->gb);
3826 sps->offset_for_top_to_bottom_field= get_se_golomb(&s->gb);
3827 sps->poc_cycle_length= get_ue_golomb(&s->gb);
3829 for(i=0; i<sps->poc_cycle_length; i++)
3830 sps->offset_for_ref_frame[i]= get_se_golomb(&s->gb);
3832 if(sps->poc_type > 2){
3833 fprintf(stderr, "illegal POC type %d\n", sps->poc_type);
3837 sps->ref_frame_count= get_ue_golomb(&s->gb);
3838 sps->gaps_in_frame_num_allowed_flag= get_bits1(&s->gb);
3839 sps->mb_width= get_ue_golomb(&s->gb) + 1;
3840 sps->mb_height= get_ue_golomb(&s->gb) + 1;
3841 sps->frame_mbs_only_flag= get_bits1(&s->gb);
3842 if(!sps->frame_mbs_only_flag)
3843 sps->mb_aff= get_bits1(&s->gb);
3847 sps->direct_8x8_inference_flag= get_bits1(&s->gb);
3849 sps->crop= get_bits1(&s->gb);
3851 sps->crop_left = get_ue_golomb(&s->gb);
3852 sps->crop_right = get_ue_golomb(&s->gb);
3853 sps->crop_top = get_ue_golomb(&s->gb);
3854 sps->crop_bottom= get_ue_golomb(&s->gb);
3855 if(sps->crop_left || sps->crop_top){
3856 fprintf(stderr, "insane croping not completly supported, this could look slightly wrong ...\n");
3862 sps->crop_bottom= 0;
3865 sps->vui_parameters_present_flag= get_bits1(&s->gb);
3866 if( sps->vui_parameters_present_flag )
3867 decode_vui_parameters(h, sps);
3869 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
3870 printf("sps:%d profile:%d/%d poc:%d ref:%d %dx%d %s %s crop:%d/%d/%d/%d %s\n",
3871 sps_id, sps->profile_idc, sps->level_idc,
3873 sps->ref_frame_count,
3874 sps->mb_width, sps->mb_height,
3875 sps->frame_mbs_only_flag ? "FRM" : (sps->mb_aff ? "MB-AFF" : "PIC-AFF"),
3876 sps->direct_8x8_inference_flag ? "8B8" : "",
3877 sps->crop_left, sps->crop_right,
3878 sps->crop_top, sps->crop_bottom,
3879 sps->vui_parameters_present_flag ? "VUI" : ""
3885 static inline int decode_picture_parameter_set(H264Context *h){
3886 MpegEncContext * const s = &h->s;
3887 int pps_id= get_ue_golomb(&s->gb);
3888 PPS *pps= &h->pps_buffer[pps_id];
3890 pps->sps_id= get_ue_golomb(&s->gb);
3891 pps->cabac= get_bits1(&s->gb);
3892 pps->pic_order_present= get_bits1(&s->gb);
3893 pps->slice_group_count= get_ue_golomb(&s->gb) + 1;
3894 if(pps->slice_group_count > 1 ){
3895 pps->mb_slice_group_map_type= get_ue_golomb(&s->gb);
3896 fprintf(stderr, "FMO not supported\n");
3897 switch(pps->mb_slice_group_map_type){
3900 | for( i = 0; i <= num_slice_groups_minus1; i++ ) | | |
3901 | run_length[ i ] |1 |ue(v) |
3906 | for( i = 0; i < num_slice_groups_minus1; i++ ) | | |
3908 | top_left_mb[ i ] |1 |ue(v) |
3909 | bottom_right_mb[ i ] |1 |ue(v) |
3917 | slice_group_change_direction_flag |1 |u(1) |
3918 | slice_group_change_rate_minus1 |1 |ue(v) |
3923 | slice_group_id_cnt_minus1 |1 |ue(v) |
3924 | for( i = 0; i <= slice_group_id_cnt_minus1; i++ | | |
3926 | slice_group_id[ i ] |1 |u(v) |
3931 pps->ref_count[0]= get_ue_golomb(&s->gb) + 1;
3932 pps->ref_count[1]= get_ue_golomb(&s->gb) + 1;
3933 if(pps->ref_count[0] > 32 || pps->ref_count[1] > 32){
3934 fprintf(stderr, "reference overflow (pps)\n");
3938 pps->weighted_pred= get_bits1(&s->gb);
3939 pps->weighted_bipred_idc= get_bits(&s->gb, 2);
3940 pps->init_qp= get_se_golomb(&s->gb) + 26;
3941 pps->init_qs= get_se_golomb(&s->gb) + 26;
3942 pps->chroma_qp_index_offset= get_se_golomb(&s->gb);
3943 pps->deblocking_filter_parameters_present= get_bits1(&s->gb);
3944 pps->constrained_intra_pred= get_bits1(&s->gb);
3945 pps->redundant_pic_cnt_present = get_bits1(&s->gb);
3947 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
3948 printf("pps:%d sps:%d %s slice_groups:%d ref:%d/%d %s qp:%d/%d/%d %s %s %s\n",
3949 pps_id, pps->sps_id,
3950 pps->cabac ? "CABAC" : "CAVLC",
3951 pps->slice_group_count,
3952 pps->ref_count[0], pps->ref_count[1],
3953 pps->weighted_pred ? "weighted" : "",
3954 pps->init_qp, pps->init_qs, pps->chroma_qp_index_offset,
3955 pps->deblocking_filter_parameters_present ? "LPAR" : "",
3956 pps->constrained_intra_pred ? "CONSTR" : "",
3957 pps->redundant_pic_cnt_present ? "REDU" : ""
3965 * finds the end of the current frame in the bitstream.
3966 * @return the position of the first byte of the next frame, or -1
3968 static int find_frame_end(MpegEncContext *s, uint8_t *buf, int buf_size){
3969 ParseContext *pc= &s->parse_context;
3972 //printf("first %02X%02X%02X%02X\n", buf[0], buf[1],buf[2],buf[3]);
3973 // mb_addr= pc->mb_addr - 1;
3975 //FIXME this will fail with slices
3976 for(i=0; i<buf_size; i++){
3977 state= (state<<8) | buf[i];
3978 if((state&0xFFFFFF1F) == 0x101 || (state&0xFFFFFF1F) == 0x102 || (state&0xFFFFFF1F) == 0x105){
3979 if(pc->frame_start_found){
3981 pc->frame_start_found= 0;
3984 pc->frame_start_found= 1;
3989 return END_NOT_FOUND;
3992 static int decode_nal_units(H264Context *h, uint8_t *buf, int buf_size){
3993 MpegEncContext * const s = &h->s;
3994 AVCodecContext * const avctx= s->avctx;
3998 for(i=0; i<32; i++){
3999 printf("%X ", buf[i]);
4008 // start code prefix search
4009 for(; buf_index + 3 < buf_size; buf_index++){
4010 // this should allways succeed in the first iteration
4011 if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
4015 if(buf_index+3 >= buf_size) break;
4019 ptr= decode_nal(h, buf + buf_index, &dst_length, &consumed, buf_size - buf_index);
4020 if(ptr[dst_length - 1] == 0) dst_length--;
4021 bit_length= 8*dst_length - decode_rbsp_trailing(ptr + dst_length - 1);
4023 if(s->avctx->debug&FF_DEBUG_STARTCODE){
4024 printf("NAL %d at %d length %d\n", h->nal_unit_type, buf_index, dst_length);
4027 buf_index += consumed;
4029 if(h->nal_ref_idc < s->hurry_up)
4032 switch(h->nal_unit_type){
4034 idr(h); //FIXME ensure we dont loose some frames if there is reordering
4036 init_get_bits(&s->gb, ptr, bit_length);
4038 h->inter_gb_ptr= &s->gb;
4039 s->data_partitioning = 0;
4041 if(decode_slice_header(h) < 0) return -1;
4042 if(h->redundant_pic_count==0)
4046 init_get_bits(&s->gb, ptr, bit_length);
4048 h->inter_gb_ptr= NULL;
4049 s->data_partitioning = 1;
4051 if(decode_slice_header(h) < 0) return -1;
4054 init_get_bits(&h->intra_gb, ptr, bit_length);
4055 h->intra_gb_ptr= &h->intra_gb;
4058 init_get_bits(&h->inter_gb, ptr, bit_length);
4059 h->inter_gb_ptr= &h->inter_gb;
4061 if(h->redundant_pic_count==0 && h->intra_gb_ptr && s->data_partitioning)
4067 init_get_bits(&s->gb, ptr, bit_length);
4068 decode_seq_parameter_set(h);
4070 if(s->flags& CODEC_FLAG_LOW_DELAY)
4073 avctx->has_b_frames= !s->low_delay;
4076 init_get_bits(&s->gb, ptr, bit_length);
4078 decode_picture_parameter_set(h);
4081 case NAL_PICTURE_DELIMITER:
4083 case NAL_FILTER_DATA:
4087 //FIXME move after where irt is set
4088 s->current_picture.pict_type= s->pict_type;
4089 s->current_picture.key_frame= s->pict_type == I_TYPE;
4092 if(!s->current_picture_ptr) return buf_index; //no frame
4094 h->prev_frame_num_offset= h->frame_num_offset;
4095 h->prev_frame_num= h->frame_num;
4096 if(s->current_picture_ptr->reference){
4097 h->prev_poc_msb= h->poc_msb;
4098 h->prev_poc_lsb= h->poc_lsb;
4100 if(s->current_picture_ptr->reference)
4101 execute_ref_pic_marking(h, h->mmco, h->mmco_index);
4103 assert(h->mmco_index==0);
4112 * retunrs the number of bytes consumed for building the current frame
4114 static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
4115 if(s->flags&CODEC_FLAG_TRUNCATED){
4116 pos -= s->parse_context.last_index;
4117 if(pos<0) pos=0; // FIXME remove (uneeded?)
4121 if(pos==0) pos=1; //avoid infinite loops (i doubt thats needed but ...)
4122 if(pos+10>buf_size) pos=buf_size; // oops ;)
4128 static int decode_frame(AVCodecContext *avctx,
4129 void *data, int *data_size,
4130 uint8_t *buf, int buf_size)
4132 H264Context *h = avctx->priv_data;
4133 MpegEncContext *s = &h->s;
4134 AVFrame *pict = data;
4137 s->flags= avctx->flags;
4141 /* no supplementary picture */
4142 if (buf_size == 0) {
4146 if(s->flags&CODEC_FLAG_TRUNCATED){
4147 int next= find_frame_end(s, buf, buf_size);
4149 if( ff_combine_frame(s, next, &buf, &buf_size) < 0 )
4151 //printf("next:%d buf_size:%d last_index:%d\n", next, buf_size, s->parse_context.last_index);
4154 if(s->avctx->extradata_size && s->picture_number==0){
4155 if(0 < decode_nal_units(h, s->avctx->extradata, s->avctx->extradata_size) )
4159 buf_index=decode_nal_units(h, buf, buf_size);
4163 //FIXME do something with unavailable reference frames
4165 // if(ret==FRAME_SKIPED) return get_consumed_bytes(s, buf_index, buf_size);
4167 if(s->pict_type==B_TYPE || s->low_delay){
4168 *pict= *(AVFrame*)&s->current_picture;
4170 *pict= *(AVFrame*)&s->last_picture;
4173 if(!s->current_picture_ptr){
4174 fprintf(stderr, "error, NO frame\n");
4178 *pict= *(AVFrame*)&s->current_picture; //FIXME
4179 ff_print_debug_info(s, s->current_picture_ptr);
4180 assert(pict->data[0]);
4181 //printf("out %d\n", (int)pict->data[0]);
4184 /* Return the Picture timestamp as the frame number */
4185 /* we substract 1 because it is added on utils.c */
4186 avctx->frame_number = s->picture_number - 1;
4189 /* dont output the last pic after seeking */
4190 if(s->last_picture_ptr || s->low_delay)
4191 //Note this isnt a issue as a IDR pic should flush teh buffers
4193 *data_size = sizeof(AVFrame);
4194 return get_consumed_bytes(s, buf_index, buf_size);
4197 static inline void fill_mb_avail(H264Context *h){
4198 MpegEncContext * const s = &h->s;
4199 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
4202 h->mb_avail[0]= s->mb_x && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num;
4203 h->mb_avail[1]= h->slice_table[mb_xy - s->mb_stride ] == h->slice_num;
4204 h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num;
4210 h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num;
4211 h->mb_avail[4]= 1; //FIXME move out
4212 h->mb_avail[5]= 0; //FIXME move out
4218 #define SIZE (COUNT*40)
4224 // int int_temp[10000];
4226 AVCodecContext avctx;
4228 dsputil_init(&dsp, &avctx);
4230 init_put_bits(&pb, temp, SIZE, NULL, NULL);
4231 printf("testing unsigned exp golomb\n");
4232 for(i=0; i<COUNT; i++){
4234 set_ue_golomb(&pb, i);
4235 STOP_TIMER("set_ue_golomb");
4237 flush_put_bits(&pb);
4239 init_get_bits(&gb, temp, 8*SIZE);
4240 for(i=0; i<COUNT; i++){
4243 s= show_bits(&gb, 24);
4246 j= get_ue_golomb(&gb);
4248 printf("missmatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
4251 STOP_TIMER("get_ue_golomb");
4255 init_put_bits(&pb, temp, SIZE, NULL, NULL);
4256 printf("testing signed exp golomb\n");
4257 for(i=0; i<COUNT; i++){
4259 set_se_golomb(&pb, i - COUNT/2);
4260 STOP_TIMER("set_se_golomb");
4262 flush_put_bits(&pb);
4264 init_get_bits(&gb, temp, 8*SIZE);
4265 for(i=0; i<COUNT; i++){
4268 s= show_bits(&gb, 24);
4271 j= get_se_golomb(&gb);
4272 if(j != i - COUNT/2){
4273 printf("missmatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
4276 STOP_TIMER("get_se_golomb");
4279 printf("testing 4x4 (I)DCT\n");
4282 uint8_t src[16], ref[16];
4283 uint64_t error= 0, max_error=0;
4285 for(i=0; i<COUNT; i++){
4287 // printf("%d %d %d\n", r1, r2, (r2-r1)*16);
4288 for(j=0; j<16; j++){
4289 ref[j]= random()%255;
4290 src[j]= random()%255;
4293 h264_diff_dct_c(block, src, ref, 4);
4296 for(j=0; j<16; j++){
4297 // printf("%d ", block[j]);
4298 block[j]= block[j]*4;
4299 if(j&1) block[j]= (block[j]*4 + 2)/5;
4300 if(j&4) block[j]= (block[j]*4 + 2)/5;
4304 h264_add_idct_c(ref, block, 4);
4305 /* for(j=0; j<16; j++){
4306 printf("%d ", ref[j]);
4310 for(j=0; j<16; j++){
4311 int diff= ABS(src[j] - ref[j]);
4314 max_error= FFMAX(max_error, diff);
4317 printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
4319 printf("testing quantizer\n");
4320 for(qp=0; qp<52; qp++){
4322 src1_block[i]= src2_block[i]= random()%255;
4326 printf("Testing NAL layer\n");
4328 uint8_t bitstream[COUNT];
4329 uint8_t nal[COUNT*2];
4331 memset(&h, 0, sizeof(H264Context));
4333 for(i=0; i<COUNT; i++){
4341 for(j=0; j<COUNT; j++){
4342 bitstream[j]= (random() % 255) + 1;
4345 for(j=0; j<zeros; j++){
4346 int pos= random() % COUNT;
4347 while(bitstream[pos] == 0){
4356 nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
4358 printf("encoding failed\n");
4362 out= decode_nal(&h, nal, &out_length, &consumed, nal_length);
4366 if(out_length != COUNT){
4367 printf("incorrect length %d %d\n", out_length, COUNT);
4371 if(consumed != nal_length){
4372 printf("incorrect consumed length %d %d\n", nal_length, consumed);
4376 if(memcmp(bitstream, out, COUNT)){
4377 printf("missmatch\n");
4382 printf("Testing RBSP\n");
4390 static int decode_end(AVCodecContext *avctx)
4392 H264Context *h = avctx->priv_data;
4393 MpegEncContext *s = &h->s;
4395 free_tables(h); //FIXME cleanup init stuff perhaps
4398 // memset(h, 0, sizeof(H264Context));
4404 AVCodec h264_decoder = {
4408 sizeof(H264Context),
4413 /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED,