div by zero aspect fix
[libav.git] / libavcodec / h264.c
CommitLineData
0da71265
MN
1/*
2 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4 *
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.
9 *
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.
14 *
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
18 *
19 */
20
21/**
22 * @file h264.c
23 * H.264 / AVC / MPEG4 part10 codec.
24 * @author Michael Niedermayer <michaelni@gmx.at>
25 */
26
27#include "common.h"
28#include "dsputil.h"
29#include "avcodec.h"
30#include "mpegvideo.h"
31#include "h264data.h"
32#include "golomb.h"
33
e5017ab8
LA
34#include "cabac.h"
35
0da71265
MN
36#undef NDEBUG
37#include <assert.h>
38
39#define interlaced_dct interlaced_dct_is_a_bad_name
40#define mb_intra mb_intra_isnt_initalized_see_mb_type
41
42#define LUMA_DC_BLOCK_INDEX 25
43#define CHROMA_DC_BLOCK_INDEX 26
44
45#define CHROMA_DC_COEFF_TOKEN_VLC_BITS 8
46#define COEFF_TOKEN_VLC_BITS 8
47#define TOTAL_ZEROS_VLC_BITS 9
48#define CHROMA_DC_TOTAL_ZEROS_VLC_BITS 3
49#define RUN_VLC_BITS 3
50#define RUN7_VLC_BITS 6
51
52#define MAX_SPS_COUNT 32
53#define MAX_PPS_COUNT 256
54
55#define MAX_MMCO_COUNT 66
56
57/**
58 * Sequence parameter set
59 */
60typedef struct SPS{
61
62 int profile_idc;
63 int level_idc;
0da71265
MN
64 int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4
65 int poc_type; ///< pic_order_cnt_type
66 int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4
67 int delta_pic_order_always_zero_flag;
68 int offset_for_non_ref_pic;
69 int offset_for_top_to_bottom_field;
70 int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle
71 int ref_frame_count; ///< num_ref_frames
a15e68de 72 int gaps_in_frame_num_allowed_flag;
0da71265
MN
73 int mb_width; ///< frame_width_in_mbs_minus1 + 1
74 int mb_height; ///< frame_height_in_mbs_minus1 + 1
75 int frame_mbs_only_flag;
76 int mb_aff; ///<mb_adaptive_frame_field_flag
77 int direct_8x8_inference_flag;
a15e68de
MN
78 int crop; ///< frame_cropping_flag
79 int crop_left; ///< frame_cropping_rect_left_offset
80 int crop_right; ///< frame_cropping_rect_right_offset
81 int crop_top; ///< frame_cropping_rect_top_offset
82 int crop_bottom; ///< frame_cropping_rect_bottom_offset
0da71265 83 int vui_parameters_present_flag;
5ff85f1d 84 AVRational sar;
ec587a50
MR
85 int timing_info_present_flag;
86 uint32_t num_units_in_tick;
87 uint32_t time_scale;
88 int fixed_frame_rate_flag;
0da71265
MN
89 short offset_for_ref_frame[256]; //FIXME dyn aloc?
90}SPS;
91
92/**
93 * Picture parameter set
94 */
95typedef struct PPS{
96 int sps_id;
97 int cabac; ///< entropy_coding_mode_flag
98 int pic_order_present; ///< pic_order_present_flag
99 int slice_group_count; ///< num_slice_groups_minus1 + 1
100 int mb_slice_group_map_type;
101 int ref_count[2]; ///< num_ref_idx_l0/1_active_minus1 + 1
102 int weighted_pred; ///< weighted_pred_flag
103 int weighted_bipred_idc;
104 int init_qp; ///< pic_init_qp_minus26 + 26
105 int init_qs; ///< pic_init_qs_minus26 + 26
106 int chroma_qp_index_offset;
107 int deblocking_filter_parameters_present; ///< deblocking_filter_parameters_present_flag
108 int constrained_intra_pred; ///< constrained_intra_pred_flag
109 int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag
0da71265
MN
110}PPS;
111
112/**
113 * Memory management control operation opcode.
114 */
115typedef enum MMCOOpcode{
116 MMCO_END=0,
117 MMCO_SHORT2UNUSED,
118 MMCO_LONG2UNUSED,
119 MMCO_SHORT2LONG,
120 MMCO_SET_MAX_LONG,
121 MMCO_RESET,
122 MMCO_LONG,
123} MMCOOpcode;
124
125/**
126 * Memory management control operation.
127 */
128typedef struct MMCO{
129 MMCOOpcode opcode;
130 int short_frame_num;
131 int long_index;
132} MMCO;
133
134/**
135 * H264Context
136 */
137typedef struct H264Context{
138 MpegEncContext s;
139 int nal_ref_idc;
140 int nal_unit_type;
141#define NAL_SLICE 1
142#define NAL_DPA 2
143#define NAL_DPB 3
144#define NAL_DPC 4
145#define NAL_IDR_SLICE 5
146#define NAL_SEI 6
147#define NAL_SPS 7
148#define NAL_PPS 8
149#define NAL_PICTURE_DELIMITER 9
150#define NAL_FILTER_DATA 10
151 uint8_t *rbsp_buffer;
152 int rbsp_buffer_size;
153
4770b1b4
RT
154 /**
155 * Used to parse AVC variant of h264
156 */
157 int is_avc; ///< this flag is != 0 if codec is avc1
158 int got_avcC; ///< flag used to parse avcC data only once
159 int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
160
0da71265
MN
161 int chroma_qp; //QPc
162
163 int prev_mb_skiped; //FIXME remove (IMHO not used)
164
165 //prediction stuff
166 int chroma_pred_mode;
167 int intra16x16_pred_mode;
168
169 int8_t intra4x4_pred_mode_cache[5*8];
170 int8_t (*intra4x4_pred_mode)[8];
171 void (*pred4x4 [9+3])(uint8_t *src, uint8_t *topright, int stride);//FIXME move to dsp?
172 void (*pred8x8 [4+3])(uint8_t *src, int stride);
173 void (*pred16x16[4+3])(uint8_t *src, int stride);
174 unsigned int topleft_samples_available;
175 unsigned int top_samples_available;
176 unsigned int topright_samples_available;
177 unsigned int left_samples_available;
53c05b1e
MN
178 uint8_t (*top_border)[16+2*8];
179 uint8_t left_border[17+2*9];
0da71265
MN
180
181 /**
182 * non zero coeff count cache.
183 * is 64 if not available.
184 */
185 uint8_t non_zero_count_cache[6*8];
53c05b1e 186 uint8_t (*non_zero_count)[16];
0da71265
MN
187
188 /**
189 * Motion vector cache.
190 */
191 int16_t mv_cache[2][5*8][2];
192 int8_t ref_cache[2][5*8];
193#define LIST_NOT_USED -1 //FIXME rename?
194#define PART_NOT_AVAILABLE -2
195
196 /**
197 * is 1 if the specific list MV&references are set to 0,0,-2.
198 */
199 int mv_cache_clean[2];
200
201 int block_offset[16+8];
202 int chroma_subblock_offset[16]; //FIXME remove
203
204 uint16_t *mb2b_xy; //FIXME are these 4 a good idea?
205 uint16_t *mb2b8_xy;
650cec0c 206 int b_stride; //FIXME use s->b4_stride
0da71265
MN
207 int b8_stride;
208
8b82a956
MN
209 int halfpel_flag;
210 int thirdpel_flag;
211
da3b9756
MM
212 int unknown_svq3_flag;
213 int next_slice_index;
214
0da71265
MN
215 SPS sps_buffer[MAX_SPS_COUNT];
216 SPS sps; ///< current sps
217
218 PPS pps_buffer[MAX_PPS_COUNT];
219 /**
220 * current pps
221 */
222 PPS pps; //FIXME move tp Picture perhaps? (->no) do we need that?
223
224 int slice_num;
225 uint8_t *slice_table_base;
226 uint8_t *slice_table; ///< slice_table_base + mb_stride + 1
227 int slice_type;
228 int slice_type_fixed;
229
230 //interlacing specific flags
231 int mb_field_decoding_flag;
232
233 int sub_mb_type[4];
234
235 //POC stuff
236 int poc_lsb;
237 int poc_msb;
238 int delta_poc_bottom;
239 int delta_poc[2];
240 int frame_num;
241 int prev_poc_msb; ///< poc_msb of the last reference pic for POC type 0
242 int prev_poc_lsb; ///< poc_lsb of the last reference pic for POC type 0
243 int frame_num_offset; ///< for POC type 2
244 int prev_frame_num_offset; ///< for POC type 2
245 int prev_frame_num; ///< frame_num of the last pic for POC type 1/2
246
247 /**
248 * frame_num for frames or 2*frame_num for field pics.
249 */
250 int curr_pic_num;
251
252 /**
253 * max_frame_num or 2*max_frame_num for field pics.
254 */
255 int max_pic_num;
256
257 //Weighted pred stuff
9f2d1b4f
LM
258 int use_weight;
259 int use_weight_chroma;
0da71265
MN
260 int luma_log2_weight_denom;
261 int chroma_log2_weight_denom;
262 int luma_weight[2][16];
263 int luma_offset[2][16];
264 int chroma_weight[2][16][2];
265 int chroma_offset[2][16][2];
9f2d1b4f 266 int implicit_weight[16][16];
0da71265
MN
267
268 //deblock
53c05b1e 269 int deblocking_filter; ///< disable_deblocking_filter_idc with 1<->0
980a82b7
MN
270 int slice_alpha_c0_offset;
271 int slice_beta_offset;
0da71265
MN
272
273 int redundant_pic_count;
274
275 int direct_spatial_mv_pred;
5ad984c9 276 int dist_scale_factor[16];
0da71265
MN
277
278 /**
279 * num_ref_idx_l0/1_active_minus1 + 1
280 */
281 int ref_count[2];// FIXME split for AFF
282 Picture *short_ref[16];
283 Picture *long_ref[16];
284 Picture default_ref_list[2][32];
285 Picture ref_list[2][32]; //FIXME size?
286 Picture field_ref_list[2][32]; //FIXME size?
a4dae92b 287 Picture *delayed_pic[16]; //FIXME size?
0da71265
MN
288
289 /**
290 * memory management control operations buffer.
291 */
292 MMCO mmco[MAX_MMCO_COUNT];
293 int mmco_index;
294
295 int long_ref_count; ///< number of actual long term references
296 int short_ref_count; ///< number of actual short term references
297
298 //data partitioning
299 GetBitContext intra_gb;
300 GetBitContext inter_gb;
301 GetBitContext *intra_gb_ptr;
302 GetBitContext *inter_gb_ptr;
303
304 DCTELEM mb[16*24] __align8;
e5017ab8
LA
305
306 /**
307 * Cabac
308 */
309 CABACContext cabac;
310 uint8_t cabac_state[399];
311 int cabac_init_idc;
312
313 /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0,1,2), 0x0? luma_cbp */
314 uint16_t *cbp_table;
3981c385
MN
315 int top_cbp;
316 int left_cbp;
693399ba 317 /* chroma_pred_mode for i4x4 or i16x16, else 0 */
e5017ab8
LA
318 uint8_t *chroma_pred_mode_table;
319 int last_qscale_diff;
9e528114
LA
320 int16_t (*mvd_table[2])[2];
321 int16_t mvd_cache[2][5*8][2];
5ad984c9
LM
322 uint8_t *direct_table;
323 uint8_t direct_cache[5*8];
e5017ab8 324
0da71265
MN
325}H264Context;
326
327static VLC coeff_token_vlc[4];
328static VLC chroma_dc_coeff_token_vlc;
329
330static VLC total_zeros_vlc[15];
331static VLC chroma_dc_total_zeros_vlc[3];
332
333static VLC run_vlc[6];
334static VLC run7_vlc;
335
8b82a956
MN
336static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp);
337static void svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp, int dc);
53c05b1e 338static void filter_mb( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr);
8b82a956 339
377ec888
MN
340static inline uint32_t pack16to32(int a, int b){
341#ifdef WORDS_BIGENDIAN
342 return (b&0xFFFF) + (a<<16);
343#else
344 return (a&0xFFFF) + (b<<16);
345#endif
346}
347
0da71265
MN
348/**
349 * fill a rectangle.
5175b937
LLL
350 * @param h height of the rectangle, should be a constant
351 * @param w width of the rectangle, should be a constant
0da71265
MN
352 * @param size the size of val (1 or 4), should be a constant
353 */
af6e2fed
MN
354static inline void fill_rectangle(void *vp, int w, int h, int stride, uint32_t val, int size){ //FIXME ensure this IS inlined
355 uint8_t *p= (uint8_t*)vp;
0da71265
MN
356 assert(size==1 || size==4);
357
358 w *= size;
359 stride *= size;
360
361//FIXME check what gcc generates for 64 bit on x86 and possible write a 32 bit ver of it
362 if(w==2 && h==2){
363 *(uint16_t*)(p + 0)=
364 *(uint16_t*)(p + stride)= size==4 ? val : val*0x0101;
365 }else if(w==2 && h==4){
366 *(uint16_t*)(p + 0*stride)=
367 *(uint16_t*)(p + 1*stride)=
368 *(uint16_t*)(p + 2*stride)=
369 *(uint16_t*)(p + 3*stride)= size==4 ? val : val*0x0101;
f7a8c179
MN
370 }else if(w==4 && h==1){
371 *(uint32_t*)(p + 0*stride)= size==4 ? val : val*0x01010101;
0da71265
MN
372 }else if(w==4 && h==2){
373 *(uint32_t*)(p + 0*stride)=
374 *(uint32_t*)(p + 1*stride)= size==4 ? val : val*0x01010101;
375 }else if(w==4 && h==4){
376 *(uint32_t*)(p + 0*stride)=
377 *(uint32_t*)(p + 1*stride)=
378 *(uint32_t*)(p + 2*stride)=
379 *(uint32_t*)(p + 3*stride)= size==4 ? val : val*0x01010101;
380 }else if(w==8 && h==1){
381 *(uint32_t*)(p + 0)=
382 *(uint32_t*)(p + 4)= size==4 ? val : val*0x01010101;
383 }else if(w==8 && h==2){
384 *(uint32_t*)(p + 0 + 0*stride)=
385 *(uint32_t*)(p + 4 + 0*stride)=
386 *(uint32_t*)(p + 0 + 1*stride)=
387 *(uint32_t*)(p + 4 + 1*stride)= size==4 ? val : val*0x01010101;
388 }else if(w==8 && h==4){
389 *(uint64_t*)(p + 0*stride)=
390 *(uint64_t*)(p + 1*stride)=
391 *(uint64_t*)(p + 2*stride)=
392 *(uint64_t*)(p + 3*stride)= size==4 ? val*0x0100000001ULL : val*0x0101010101010101ULL;
393 }else if(w==16 && h==2){
394 *(uint64_t*)(p + 0+0*stride)=
395 *(uint64_t*)(p + 8+0*stride)=
396 *(uint64_t*)(p + 0+1*stride)=
397 *(uint64_t*)(p + 8+1*stride)= size==4 ? val*0x0100000001ULL : val*0x0101010101010101ULL;
398 }else if(w==16 && h==4){
399 *(uint64_t*)(p + 0+0*stride)=
400 *(uint64_t*)(p + 8+0*stride)=
401 *(uint64_t*)(p + 0+1*stride)=
402 *(uint64_t*)(p + 8+1*stride)=
403 *(uint64_t*)(p + 0+2*stride)=
404 *(uint64_t*)(p + 8+2*stride)=
405 *(uint64_t*)(p + 0+3*stride)=
406 *(uint64_t*)(p + 8+3*stride)= size==4 ? val*0x0100000001ULL : val*0x0101010101010101ULL;
407 }else
408 assert(0);
409}
410
411static inline void fill_caches(H264Context *h, int mb_type){
412 MpegEncContext * const s = &h->s;
7bc9090a 413 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
0da71265
MN
414 int topleft_xy, top_xy, topright_xy, left_xy[2];
415 int topleft_type, top_type, topright_type, left_type[2];
416 int left_block[4];
417 int i;
418
419 //wow what a mess, why didnt they simplify the interlacing&intra stuff, i cant imagine that these complex rules are worth it
420
421 if(h->sps.mb_aff){
422 //FIXME
1df1df0b
FB
423 topleft_xy = 0; /* avoid warning */
424 top_xy = 0; /* avoid warning */
425 topright_xy = 0; /* avoid warning */
0da71265 426 }else{
7bc9090a
MN
427 topleft_xy = mb_xy-1 - s->mb_stride;
428 top_xy = mb_xy - s->mb_stride;
429 topright_xy= mb_xy+1 - s->mb_stride;
0da71265
MN
430 left_xy[0] = mb_xy-1;
431 left_xy[1] = mb_xy-1;
432 left_block[0]= 0;
433 left_block[1]= 1;
434 left_block[2]= 2;
435 left_block[3]= 3;
436 }
437
438 topleft_type = h->slice_table[topleft_xy ] == h->slice_num ? s->current_picture.mb_type[topleft_xy] : 0;
439 top_type = h->slice_table[top_xy ] == h->slice_num ? s->current_picture.mb_type[top_xy] : 0;
440 topright_type= h->slice_table[topright_xy] == h->slice_num ? s->current_picture.mb_type[topright_xy]: 0;
441 left_type[0] = h->slice_table[left_xy[0] ] == h->slice_num ? s->current_picture.mb_type[left_xy[0]] : 0;
442 left_type[1] = h->slice_table[left_xy[1] ] == h->slice_num ? s->current_picture.mb_type[left_xy[1]] : 0;
443
444 if(IS_INTRA(mb_type)){
445 h->topleft_samples_available=
446 h->top_samples_available=
447 h->left_samples_available= 0xFFFF;
448 h->topright_samples_available= 0xEEEA;
449
450 if(!IS_INTRA(top_type) && (top_type==0 || h->pps.constrained_intra_pred)){
451 h->topleft_samples_available= 0xB3FF;
452 h->top_samples_available= 0x33FF;
453 h->topright_samples_available= 0x26EA;
454 }
455 for(i=0; i<2; i++){
456 if(!IS_INTRA(left_type[i]) && (left_type[i]==0 || h->pps.constrained_intra_pred)){
457 h->topleft_samples_available&= 0xDF5F;
458 h->left_samples_available&= 0x5F5F;
459 }
460 }
461
462 if(!IS_INTRA(topleft_type) && (topleft_type==0 || h->pps.constrained_intra_pred))
463 h->topleft_samples_available&= 0x7FFF;
464
465 if(!IS_INTRA(topright_type) && (topright_type==0 || h->pps.constrained_intra_pred))
466 h->topright_samples_available&= 0xFBFF;
467
468 if(IS_INTRA4x4(mb_type)){
469 if(IS_INTRA4x4(top_type)){
470 h->intra4x4_pred_mode_cache[4+8*0]= h->intra4x4_pred_mode[top_xy][4];
471 h->intra4x4_pred_mode_cache[5+8*0]= h->intra4x4_pred_mode[top_xy][5];
472 h->intra4x4_pred_mode_cache[6+8*0]= h->intra4x4_pred_mode[top_xy][6];
473 h->intra4x4_pred_mode_cache[7+8*0]= h->intra4x4_pred_mode[top_xy][3];
474 }else{
475 int pred;
476 if(IS_INTRA16x16(top_type) || (IS_INTER(top_type) && !h->pps.constrained_intra_pred))
477 pred= 2;
478 else{
479 pred= -1;
480 }
481 h->intra4x4_pred_mode_cache[4+8*0]=
482 h->intra4x4_pred_mode_cache[5+8*0]=
483 h->intra4x4_pred_mode_cache[6+8*0]=
484 h->intra4x4_pred_mode_cache[7+8*0]= pred;
485 }
486 for(i=0; i<2; i++){
487 if(IS_INTRA4x4(left_type[i])){
488 h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[0+2*i]];
489 h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[1+2*i]];
490 }else{
491 int pred;
492 if(IS_INTRA16x16(left_type[i]) || (IS_INTER(left_type[i]) && !h->pps.constrained_intra_pred))
493 pred= 2;
494 else{
495 pred= -1;
496 }
497 h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
498 h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= pred;
499 }
500 }
501 }
502 }
503
504
505/*
5060 . T T. T T T T
5071 L . .L . . . .
5082 L . .L . . . .
5093 . T TL . . . .
5104 L . .L . . . .
5115 L . .. . . . .
512*/
513//FIXME constraint_intra_pred & partitioning & nnz (lets hope this is just a typo in the spec)
514 if(top_type){
53c05b1e
MN
515 h->non_zero_count_cache[4+8*0]= h->non_zero_count[top_xy][0];
516 h->non_zero_count_cache[5+8*0]= h->non_zero_count[top_xy][1];
517 h->non_zero_count_cache[6+8*0]= h->non_zero_count[top_xy][2];
518 h->non_zero_count_cache[7+8*0]= h->non_zero_count[top_xy][3];
0da71265 519
53c05b1e
MN
520 h->non_zero_count_cache[1+8*0]= h->non_zero_count[top_xy][7];
521 h->non_zero_count_cache[2+8*0]= h->non_zero_count[top_xy][8];
0da71265 522
53c05b1e
MN
523 h->non_zero_count_cache[1+8*3]= h->non_zero_count[top_xy][10];
524 h->non_zero_count_cache[2+8*3]= h->non_zero_count[top_xy][11];
3981c385
MN
525
526 h->top_cbp= h->cbp_table[top_xy];
0da71265
MN
527 }else{
528 h->non_zero_count_cache[4+8*0]=
529 h->non_zero_count_cache[5+8*0]=
530 h->non_zero_count_cache[6+8*0]=
531 h->non_zero_count_cache[7+8*0]=
532
533 h->non_zero_count_cache[1+8*0]=
534 h->non_zero_count_cache[2+8*0]=
535
536 h->non_zero_count_cache[1+8*3]=
3981c385
MN
537 h->non_zero_count_cache[2+8*3]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
538
539 if(IS_INTRA(mb_type)) h->top_cbp= 0x1C0;
540 else h->top_cbp= 0;
0da71265
MN
541 }
542
543 if(left_type[0]){
53c05b1e
MN
544 h->non_zero_count_cache[3+8*1]= h->non_zero_count[left_xy[0]][6];
545 h->non_zero_count_cache[3+8*2]= h->non_zero_count[left_xy[0]][5];
546 h->non_zero_count_cache[0+8*1]= h->non_zero_count[left_xy[0]][9]; //FIXME left_block
547 h->non_zero_count_cache[0+8*4]= h->non_zero_count[left_xy[0]][12];
3981c385 548 h->left_cbp= h->cbp_table[left_xy[0]]; //FIXME interlacing
0da71265
MN
549 }else{
550 h->non_zero_count_cache[3+8*1]=
551 h->non_zero_count_cache[3+8*2]=
552 h->non_zero_count_cache[0+8*1]=
3981c385
MN
553 h->non_zero_count_cache[0+8*4]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
554
555 if(IS_INTRA(mb_type)) h->left_cbp= 0x1C0;//FIXME interlacing
556 else h->left_cbp= 0;
0da71265
MN
557 }
558
559 if(left_type[1]){
53c05b1e
MN
560 h->non_zero_count_cache[3+8*3]= h->non_zero_count[left_xy[1]][4];
561 h->non_zero_count_cache[3+8*4]= h->non_zero_count[left_xy[1]][3];
562 h->non_zero_count_cache[0+8*2]= h->non_zero_count[left_xy[1]][8];
563 h->non_zero_count_cache[0+8*5]= h->non_zero_count[left_xy[1]][11];
0da71265
MN
564 }else{
565 h->non_zero_count_cache[3+8*3]=
566 h->non_zero_count_cache[3+8*4]=
567 h->non_zero_count_cache[0+8*2]=
3981c385 568 h->non_zero_count_cache[0+8*5]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
0da71265
MN
569 }
570
571#if 1
5ad984c9
LM
572 //FIXME direct mb can skip much of this
573 if(IS_INTER(mb_type) || (IS_DIRECT(mb_type) && h->direct_spatial_mv_pred)){
0da71265
MN
574 int list;
575 for(list=0; list<2; list++){
5ad984c9 576 if((!IS_8X8(mb_type)) && !USES_LIST(mb_type, list) && !IS_DIRECT(mb_type)){
0da71265
MN
577 /*if(!h->mv_cache_clean[list]){
578 memset(h->mv_cache [list], 0, 8*5*2*sizeof(int16_t)); //FIXME clean only input? clean at all?
579 memset(h->ref_cache[list], PART_NOT_AVAILABLE, 8*5*sizeof(int8_t));
580 h->mv_cache_clean[list]= 1;
581 }*/
5ad984c9 582 continue;
0da71265
MN
583 }
584 h->mv_cache_clean[list]= 0;
585
586 if(IS_INTER(topleft_type)){
587 const int b_xy = h->mb2b_xy[topleft_xy] + 3 + 3*h->b_stride;
588 const int b8_xy= h->mb2b8_xy[topleft_xy] + 1 + h->b8_stride;
589 *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
590 h->ref_cache[list][scan8[0] - 1 - 1*8]= s->current_picture.ref_index[list][b8_xy];
591 }else{
592 *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= 0;
593 h->ref_cache[list][scan8[0] - 1 - 1*8]= topleft_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
594 }
595
596 if(IS_INTER(top_type)){
597 const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
598 const int b8_xy= h->mb2b8_xy[top_xy] + h->b8_stride;
599 *(uint32_t*)h->mv_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 0];
600 *(uint32_t*)h->mv_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 1];
601 *(uint32_t*)h->mv_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 2];
602 *(uint32_t*)h->mv_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 3];
603 h->ref_cache[list][scan8[0] + 0 - 1*8]=
604 h->ref_cache[list][scan8[0] + 1 - 1*8]= s->current_picture.ref_index[list][b8_xy + 0];
605 h->ref_cache[list][scan8[0] + 2 - 1*8]=
606 h->ref_cache[list][scan8[0] + 3 - 1*8]= s->current_picture.ref_index[list][b8_xy + 1];
607 }else{
608 *(uint32_t*)h->mv_cache [list][scan8[0] + 0 - 1*8]=
609 *(uint32_t*)h->mv_cache [list][scan8[0] + 1 - 1*8]=
610 *(uint32_t*)h->mv_cache [list][scan8[0] + 2 - 1*8]=
611 *(uint32_t*)h->mv_cache [list][scan8[0] + 3 - 1*8]= 0;
612 *(uint32_t*)&h->ref_cache[list][scan8[0] + 0 - 1*8]= ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101;
613 }
614
615 if(IS_INTER(topright_type)){
616 const int b_xy= h->mb2b_xy[topright_xy] + 3*h->b_stride;
617 const int b8_xy= h->mb2b8_xy[topright_xy] + h->b8_stride;
618 *(uint32_t*)h->mv_cache[list][scan8[0] + 4 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
619 h->ref_cache[list][scan8[0] + 4 - 1*8]= s->current_picture.ref_index[list][b8_xy];
620 }else{
621 *(uint32_t*)h->mv_cache [list][scan8[0] + 4 - 1*8]= 0;
622 h->ref_cache[list][scan8[0] + 4 - 1*8]= topright_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
623 }
624
625 //FIXME unify cleanup or sth
626 if(IS_INTER(left_type[0])){
627 const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
628 const int b8_xy= h->mb2b8_xy[left_xy[0]] + 1;
629 *(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]];
630 *(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]];
631 h->ref_cache[list][scan8[0] - 1 + 0*8]=
632 h->ref_cache[list][scan8[0] - 1 + 1*8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[0]>>1)];
633 }else{
634 *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 0*8]=
635 *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 1*8]= 0;
636 h->ref_cache[list][scan8[0] - 1 + 0*8]=
637 h->ref_cache[list][scan8[0] - 1 + 1*8]= left_type[0] ? LIST_NOT_USED : PART_NOT_AVAILABLE;
638 }
639
640 if(IS_INTER(left_type[1])){
641 const int b_xy= h->mb2b_xy[left_xy[1]] + 3;
642 const int b8_xy= h->mb2b8_xy[left_xy[1]] + 1;
643 *(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]];
644 *(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]];
645 h->ref_cache[list][scan8[0] - 1 + 2*8]=
646 h->ref_cache[list][scan8[0] - 1 + 3*8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[2]>>1)];
647 }else{
648 *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 2*8]=
649 *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 3*8]= 0;
650 h->ref_cache[list][scan8[0] - 1 + 2*8]=
651 h->ref_cache[list][scan8[0] - 1 + 3*8]= left_type[0] ? LIST_NOT_USED : PART_NOT_AVAILABLE;
652 }
653
654 h->ref_cache[list][scan8[5 ]+1] =
655 h->ref_cache[list][scan8[7 ]+1] =
656 h->ref_cache[list][scan8[13]+1] = //FIXME remove past 3 (init somewher else)
657 h->ref_cache[list][scan8[4 ]] =
658 h->ref_cache[list][scan8[12]] = PART_NOT_AVAILABLE;
659 *(uint32_t*)h->mv_cache [list][scan8[5 ]+1]=
660 *(uint32_t*)h->mv_cache [list][scan8[7 ]+1]=
661 *(uint32_t*)h->mv_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewher else)
662 *(uint32_t*)h->mv_cache [list][scan8[4 ]]=
663 *(uint32_t*)h->mv_cache [list][scan8[12]]= 0;
9e528114
LA
664
665 if( h->pps.cabac ) {
666 /* XXX beurk, Load mvd */
667 if(IS_INTER(topleft_type)){
668 const int b_xy = h->mb2b_xy[topleft_xy] + 3 + 3*h->b_stride;
669 *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy];
670 }else{
671 *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 - 1*8]= 0;
672 }
673
674 if(IS_INTER(top_type)){
675 const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
676 *(uint32_t*)h->mvd_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 0];
677 *(uint32_t*)h->mvd_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 1];
678 *(uint32_t*)h->mvd_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 2];
679 *(uint32_t*)h->mvd_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 3];
680 }else{
681 *(uint32_t*)h->mvd_cache [list][scan8[0] + 0 - 1*8]=
682 *(uint32_t*)h->mvd_cache [list][scan8[0] + 1 - 1*8]=
683 *(uint32_t*)h->mvd_cache [list][scan8[0] + 2 - 1*8]=
684 *(uint32_t*)h->mvd_cache [list][scan8[0] + 3 - 1*8]= 0;
685 }
686 if(IS_INTER(left_type[0])){
687 const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
688 *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 0*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[0]];
689 *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[1]];
690 }else{
691 *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 0*8]=
692 *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 1*8]= 0;
693 }
694 if(IS_INTER(left_type[1])){
695 const int b_xy= h->mb2b_xy[left_xy[1]] + 3;
696 *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 2*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[2]];
697 *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 3*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[3]];
698 }else{
699 *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 2*8]=
700 *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 3*8]= 0;
701 }
702 *(uint32_t*)h->mvd_cache [list][scan8[5 ]+1]=
703 *(uint32_t*)h->mvd_cache [list][scan8[7 ]+1]=
704 *(uint32_t*)h->mvd_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewher else)
705 *(uint32_t*)h->mvd_cache [list][scan8[4 ]]=
706 *(uint32_t*)h->mvd_cache [list][scan8[12]]= 0;
5ad984c9
LM
707
708 if(h->slice_type == B_TYPE){
709 fill_rectangle(&h->direct_cache[scan8[0]], 4, 4, 8, 0, 1);
710
711 if(IS_DIRECT(top_type)){
712 *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0x01010101;
713 }else if(IS_8X8(top_type)){
714 int b8_xy = h->mb2b8_xy[top_xy] + h->b8_stride;
715 h->direct_cache[scan8[0] + 0 - 1*8]= h->direct_table[b8_xy];
716 h->direct_cache[scan8[0] + 2 - 1*8]= h->direct_table[b8_xy + 1];
717 }else{
718 *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0;
719 }
720
721 //FIXME interlacing
722 if(IS_DIRECT(left_type[0])){
723 h->direct_cache[scan8[0] - 1 + 0*8]=
724 h->direct_cache[scan8[0] - 1 + 2*8]= 1;
725 }else if(IS_8X8(left_type[0])){
726 int b8_xy = h->mb2b8_xy[left_xy[0]] + 1;
727 h->direct_cache[scan8[0] - 1 + 0*8]= h->direct_table[b8_xy];
728 h->direct_cache[scan8[0] - 1 + 2*8]= h->direct_table[b8_xy + h->b8_stride];
729 }else{
730 h->direct_cache[scan8[0] - 1 + 0*8]=
731 h->direct_cache[scan8[0] - 1 + 2*8]= 0;
732 }
733 }
9e528114 734 }
0da71265 735 }
0da71265
MN
736 }
737#endif
738}
739
740static inline void write_back_intra_pred_mode(H264Context *h){
741 MpegEncContext * const s = &h->s;
7bc9090a 742 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
0da71265
MN
743
744 h->intra4x4_pred_mode[mb_xy][0]= h->intra4x4_pred_mode_cache[7+8*1];
745 h->intra4x4_pred_mode[mb_xy][1]= h->intra4x4_pred_mode_cache[7+8*2];
746 h->intra4x4_pred_mode[mb_xy][2]= h->intra4x4_pred_mode_cache[7+8*3];
747 h->intra4x4_pred_mode[mb_xy][3]= h->intra4x4_pred_mode_cache[7+8*4];
748 h->intra4x4_pred_mode[mb_xy][4]= h->intra4x4_pred_mode_cache[4+8*4];
749 h->intra4x4_pred_mode[mb_xy][5]= h->intra4x4_pred_mode_cache[5+8*4];
750 h->intra4x4_pred_mode[mb_xy][6]= h->intra4x4_pred_mode_cache[6+8*4];
751}
752
753/**
754 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
755 */
756static inline int check_intra4x4_pred_mode(H264Context *h){
757 MpegEncContext * const s = &h->s;
758 static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
759 static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
760 int i;
761
762 if(!(h->top_samples_available&0x8000)){
763 for(i=0; i<4; i++){
764 int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
765 if(status<0){
9b879566 766 av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
0da71265
MN
767 return -1;
768 } else if(status){
769 h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
770 }
771 }
772 }
773
774 if(!(h->left_samples_available&0x8000)){
775 for(i=0; i<4; i++){
776 int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
777 if(status<0){
9b879566 778 av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
0da71265
MN
779 return -1;
780 } else if(status){
781 h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
782 }
783 }
784 }
785
786 return 0;
787} //FIXME cleanup like next
788
789/**
790 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
791 */
792static inline int check_intra_pred_mode(H264Context *h, int mode){
793 MpegEncContext * const s = &h->s;
794 static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
795 static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
796
5175b937
LLL
797 if(mode < 0 || mode > 6) {
798 av_log(h->s.avctx, AV_LOG_ERROR, "out of range intra chroma pred mode at %d %d\n", s->mb_x, s->mb_y);
7440fe83 799 return -1;
5175b937 800 }
7440fe83 801
0da71265
MN
802 if(!(h->top_samples_available&0x8000)){
803 mode= top[ mode ];
804 if(mode<0){
9b879566 805 av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
0da71265
MN
806 return -1;
807 }
808 }
809
810 if(!(h->left_samples_available&0x8000)){
811 mode= left[ mode ];
812 if(mode<0){
9b879566 813 av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
0da71265
MN
814 return -1;
815 }
816 }
817
818 return mode;
819}
820
821/**
822 * gets the predicted intra4x4 prediction mode.
823 */
824static inline int pred_intra_mode(H264Context *h, int n){
825 const int index8= scan8[n];
826 const int left= h->intra4x4_pred_mode_cache[index8 - 1];
827 const int top = h->intra4x4_pred_mode_cache[index8 - 8];
828 const int min= FFMIN(left, top);
829
95c26348 830 tprintf("mode:%d %d min:%d\n", left ,top, min);
0da71265
MN
831
832 if(min<0) return DC_PRED;
833 else return min;
834}
835
836static inline void write_back_non_zero_count(H264Context *h){
837 MpegEncContext * const s = &h->s;
7bc9090a 838 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
0da71265 839
53c05b1e
MN
840 h->non_zero_count[mb_xy][0]= h->non_zero_count_cache[4+8*4];
841 h->non_zero_count[mb_xy][1]= h->non_zero_count_cache[5+8*4];
842 h->non_zero_count[mb_xy][2]= h->non_zero_count_cache[6+8*4];
843 h->non_zero_count[mb_xy][3]= h->non_zero_count_cache[7+8*4];
844 h->non_zero_count[mb_xy][4]= h->non_zero_count_cache[7+8*3];
845 h->non_zero_count[mb_xy][5]= h->non_zero_count_cache[7+8*2];
846 h->non_zero_count[mb_xy][6]= h->non_zero_count_cache[7+8*1];
847
848 h->non_zero_count[mb_xy][7]= h->non_zero_count_cache[1+8*2];
849 h->non_zero_count[mb_xy][8]= h->non_zero_count_cache[2+8*2];
850 h->non_zero_count[mb_xy][9]= h->non_zero_count_cache[2+8*1];
851
852 h->non_zero_count[mb_xy][10]=h->non_zero_count_cache[1+8*5];
853 h->non_zero_count[mb_xy][11]=h->non_zero_count_cache[2+8*5];
854 h->non_zero_count[mb_xy][12]=h->non_zero_count_cache[2+8*4];
0da71265
MN
855}
856
857/**
858 * gets the predicted number of non zero coefficients.
859 * @param n block index
860 */
861static inline int pred_non_zero_count(H264Context *h, int n){
862 const int index8= scan8[n];
863 const int left= h->non_zero_count_cache[index8 - 1];
864 const int top = h->non_zero_count_cache[index8 - 8];
865 int i= left + top;
866
867 if(i<64) i= (i+1)>>1;
868
95c26348 869 tprintf("pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31);
0da71265
MN
870
871 return i&31;
872}
873
1924f3ce
MN
874static inline int fetch_diagonal_mv(H264Context *h, const int16_t **C, int i, int list, int part_width){
875 const int topright_ref= h->ref_cache[list][ i - 8 + part_width ];
876
877 if(topright_ref != PART_NOT_AVAILABLE){
878 *C= h->mv_cache[list][ i - 8 + part_width ];
879 return topright_ref;
880 }else{
95c26348
MN
881 tprintf("topright MV not available\n");
882
1924f3ce
MN
883 *C= h->mv_cache[list][ i - 8 - 1 ];
884 return h->ref_cache[list][ i - 8 - 1 ];
885 }
886}
887
0da71265
MN
888/**
889 * gets the predicted MV.
890 * @param n the block index
891 * @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
892 * @param mx the x component of the predicted motion vector
893 * @param my the y component of the predicted motion vector
894 */
895static inline void pred_motion(H264Context * const h, int n, int part_width, int list, int ref, int * const mx, int * const my){
0da71265
MN
896 const int index8= scan8[n];
897 const int top_ref= h->ref_cache[list][ index8 - 8 ];
0da71265
MN
898 const int left_ref= h->ref_cache[list][ index8 - 1 ];
899 const int16_t * const A= h->mv_cache[list][ index8 - 1 ];
900 const int16_t * const B= h->mv_cache[list][ index8 - 8 ];
1924f3ce
MN
901 const int16_t * C;
902 int diagonal_ref, match_count;
903
0da71265 904 assert(part_width==1 || part_width==2 || part_width==4);
1924f3ce 905
0da71265
MN
906/* mv_cache
907 B . . A T T T T
908 U . . L . . , .
909 U . . L . . . .
910 U . . L . . , .
911 . . . L . . . .
912*/
1924f3ce
MN
913
914 diagonal_ref= fetch_diagonal_mv(h, &C, index8, list, part_width);
915 match_count= (diagonal_ref==ref) + (top_ref==ref) + (left_ref==ref);
1924f3ce
MN
916 if(match_count > 1){ //most common
917 *mx= mid_pred(A[0], B[0], C[0]);
918 *my= mid_pred(A[1], B[1], C[1]);
919 }else if(match_count==1){
920 if(left_ref==ref){
921 *mx= A[0];
922 *my= A[1];
923 }else if(top_ref==ref){
924 *mx= B[0];
925 *my= B[1];
0da71265 926 }else{
1924f3ce
MN
927 *mx= C[0];
928 *my= C[1];
0da71265
MN
929 }
930 }else{
1924f3ce 931 if(top_ref == PART_NOT_AVAILABLE && diagonal_ref == PART_NOT_AVAILABLE && left_ref != PART_NOT_AVAILABLE){
0da71265 932 *mx= A[0];
1924f3ce 933 *my= A[1];
0da71265 934 }else{
1924f3ce
MN
935 *mx= mid_pred(A[0], B[0], C[0]);
936 *my= mid_pred(A[1], B[1], C[1]);
0da71265 937 }
0da71265 938 }
1924f3ce 939
af6e2fed 940 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);
0da71265
MN
941}
942
943/**
944 * gets the directionally predicted 16x8 MV.
945 * @param n the block index
946 * @param mx the x component of the predicted motion vector
947 * @param my the y component of the predicted motion vector
948 */
949static inline void pred_16x8_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
0da71265
MN
950 if(n==0){
951 const int top_ref= h->ref_cache[list][ scan8[0] - 8 ];
952 const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];
953
579448a0 954 tprintf("pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1], h->s.mb_x, h->s.mb_y, n, list);
0da71265
MN
955
956 if(top_ref == ref){
957 *mx= B[0];
958 *my= B[1];
959 return;
960 }
961 }else{
962 const int left_ref= h->ref_cache[list][ scan8[8] - 1 ];
963 const int16_t * const A= h->mv_cache[list][ scan8[8] - 1 ];
964
579448a0 965 tprintf("pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list);
0da71265
MN
966
967 if(left_ref == ref){
968 *mx= A[0];
969 *my= A[1];
970 return;
971 }
972 }
973
974 //RARE
975 pred_motion(h, n, 4, list, ref, mx, my);
976}
977
978/**
979 * gets the directionally predicted 8x16 MV.
980 * @param n the block index
981 * @param mx the x component of the predicted motion vector
982 * @param my the y component of the predicted motion vector
983 */
984static inline void pred_8x16_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
0da71265
MN
985 if(n==0){
986 const int left_ref= h->ref_cache[list][ scan8[0] - 1 ];
987 const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ];
988
579448a0 989 tprintf("pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list);
0da71265
MN
990
991 if(left_ref == ref){
992 *mx= A[0];
993 *my= A[1];
994 return;
995 }
996 }else{
1924f3ce
MN
997 const int16_t * C;
998 int diagonal_ref;
999
1000 diagonal_ref= fetch_diagonal_mv(h, &C, scan8[4], list, 2);
0da71265 1001
579448a0 1002 tprintf("pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", diagonal_ref, C[0], C[1], h->s.mb_x, h->s.mb_y, n, list);
0da71265 1003
1924f3ce 1004 if(diagonal_ref == ref){
0da71265
MN
1005 *mx= C[0];
1006 *my= C[1];
1007 return;
1008 }
0da71265
MN
1009 }
1010
1011 //RARE
1012 pred_motion(h, n, 2, list, ref, mx, my);
1013}
1014
1015static inline void pred_pskip_motion(H264Context * const h, int * const mx, int * const my){
0da71265
MN
1016 const int top_ref = h->ref_cache[0][ scan8[0] - 8 ];
1017 const int left_ref= h->ref_cache[0][ scan8[0] - 1 ];
1018
5175b937 1019 tprintf("pred_pskip: (%d) (%d) at %2d %2d\n", top_ref, left_ref, h->s.mb_x, h->s.mb_y);
0da71265
MN
1020
1021 if(top_ref == PART_NOT_AVAILABLE || left_ref == PART_NOT_AVAILABLE
1022 || (top_ref == 0 && *(uint32_t*)h->mv_cache[0][ scan8[0] - 8 ] == 0)
1023 || (left_ref == 0 && *(uint32_t*)h->mv_cache[0][ scan8[0] - 1 ] == 0)){
1024
1025 *mx = *my = 0;
1026 return;
1027 }
1028
1029 pred_motion(h, 0, 4, 0, 0, mx, my);
1030
1031 return;
1032}
1033
5ad984c9
LM
1034static inline void direct_dist_scale_factor(H264Context * const h){
1035 const int poc = h->s.current_picture_ptr->poc;
1036 const int poc1 = h->ref_list[1][0].poc;
1037 int i;
1038 for(i=0; i<h->ref_count[0]; i++){
1039 int poc0 = h->ref_list[0][i].poc;
1040 int td = clip(poc1 - poc0, -128, 127);
1041 if(td == 0 /* FIXME || pic0 is a long-term ref */){
1042 h->dist_scale_factor[i] = 256;
1043 }else{
1044 int tb = clip(poc - poc0, -128, 127);
1045 int tx = (16384 + (ABS(td) >> 1)) / td;
1046 h->dist_scale_factor[i] = clip((tb*tx + 32) >> 6, -1024, 1023);
1047 }
1048 }
1049}
1050
1051static inline void pred_direct_motion(H264Context * const h, int *mb_type){
1052 MpegEncContext * const s = &h->s;
1053 const int mb_xy = s->mb_x + s->mb_y*s->mb_stride;
1054 const int b8_xy = 2*s->mb_x + 2*s->mb_y*h->b8_stride;
1055 const int b4_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
1056 const int mb_type_col = h->ref_list[1][0].mb_type[mb_xy];
1057 const int16_t (*l1mv0)[2] = (const int16_t (*)[2]) &h->ref_list[1][0].motion_val[0][b4_xy];
1058 const int8_t *l1ref0 = &h->ref_list[1][0].ref_index[0][b8_xy];
1059 const int is_b8x8 = IS_8X8(*mb_type);
1060 int sub_mb_type;
1061 int i8, i4;
1062
1063 if(IS_8X8(mb_type_col) && !h->sps.direct_8x8_inference_flag){
1064 /* FIXME save sub mb types from previous frames (or derive from MVs)
1065 * so we know exactly what block size to use */
1066 sub_mb_type = MB_TYPE_8x8|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_4x4 */
1067 *mb_type = MB_TYPE_8x8;
1068 }else if(!is_b8x8 && (IS_16X16(mb_type_col) || IS_INTRA(mb_type_col))){
1069 sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1070 *mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_16x16 */
1071 }else{
1072 sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1073 *mb_type = MB_TYPE_8x8;
1074 }
1075 if(!is_b8x8)
1076 *mb_type |= MB_TYPE_DIRECT2;
1077
1078 if(h->direct_spatial_mv_pred){
1079 int ref[2];
1080 int mv[2][2];
1081 int list;
1082
1083 /* ref = min(neighbors) */
1084 for(list=0; list<2; list++){
1085 int refa = h->ref_cache[list][scan8[0] - 1];
1086 int refb = h->ref_cache[list][scan8[0] - 8];
1087 int refc = h->ref_cache[list][scan8[0] - 8 + 4];
1088 if(refc == -2)
1089 refc = h->ref_cache[list][scan8[0] - 8 - 1];
1090 ref[list] = refa;
1091 if(ref[list] < 0 || (refb < ref[list] && refb >= 0))
1092 ref[list] = refb;
1093 if(ref[list] < 0 || (refc < ref[list] && refc >= 0))
1094 ref[list] = refc;
1095 if(ref[list] < 0)
1096 ref[list] = -1;
1097 }
1098
1099 if(ref[0] < 0 && ref[1] < 0){
1100 ref[0] = ref[1] = 0;
1101 mv[0][0] = mv[0][1] =
1102 mv[1][0] = mv[1][1] = 0;
1103 }else{
1104 for(list=0; list<2; list++){
1105 if(ref[list] >= 0)
1106 pred_motion(h, 0, 4, list, ref[list], &mv[list][0], &mv[list][1]);
1107 else
1108 mv[list][0] = mv[list][1] = 0;
1109 }
1110 }
1111
1112 if(ref[1] < 0){
1113 *mb_type &= ~MB_TYPE_P0L1;
1114 sub_mb_type &= ~MB_TYPE_P0L1;
1115 }else if(ref[0] < 0){
1116 *mb_type &= ~MB_TYPE_P0L0;
1117 sub_mb_type &= ~MB_TYPE_P0L0;
1118 }
1119
1120 if(IS_16X16(*mb_type)){
1121 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref[0], 1);
1122 fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, ref[1], 1);
1123 if(!IS_INTRA(mb_type_col) && l1ref0[0] == 0 &&
1124 ABS(l1mv0[0][0]) <= 1 && ABS(l1mv0[0][1]) <= 1){
1125 if(ref[0] > 0)
1126 fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mv[0][0],mv[0][1]), 4);
1127 else
1128 fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);
1129 if(ref[1] > 0)
1130 fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, pack16to32(mv[1][0],mv[1][1]), 4);
1131 else
1132 fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, 0, 4);
1133 }else{
1134 fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mv[0][0],mv[0][1]), 4);
1135 fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, pack16to32(mv[1][0],mv[1][1]), 4);
1136 }
1137 }else{
1138 for(i8=0; i8<4; i8++){
1139 const int x8 = i8&1;
1140 const int y8 = i8>>1;
1141
1142 if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1143 continue;
1144 h->sub_mb_type[i8] = sub_mb_type;
1145
1146 fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mv[0][0],mv[0][1]), 4);
1147 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mv[1][0],mv[1][1]), 4);
1148 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref[0], 1);
1149 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, ref[1], 1);
1150
1151 /* col_zero_flag */
1152 if(!IS_INTRA(mb_type_col) && l1ref0[x8 + y8*h->b8_stride] == 0){
1153 for(i4=0; i4<4; i4++){
1154 const int16_t *mv_col = l1mv0[x8*2 + (i4&1) + (y8*2 + (i4>>1))*h->b_stride];
1155 if(ABS(mv_col[0]) <= 1 && ABS(mv_col[1]) <= 1){
1156 if(ref[0] == 0)
1157 *(uint32_t*)h->mv_cache[0][scan8[i8*4+i4]] = 0;
1158 if(ref[1] == 0)
1159 *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] = 0;
1160 }
1161 }
1162 }
1163 }
1164 }
1165 }else{ /* direct temporal mv pred */
1166 /* FIXME assumes that L1ref0 used the same ref lists as current frame */
1167 if(IS_16X16(*mb_type)){
1168 fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, 0, 1);
1169 if(IS_INTRA(mb_type_col)){
1170 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);
1171 fill_rectangle(&h-> mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);
1172 fill_rectangle(&h-> mv_cache[1][scan8[0]], 4, 4, 8, 0, 4);
1173 }else{
1174 const int ref0 = l1ref0[0];
1175 const int dist_scale_factor = h->dist_scale_factor[ref0];
1176 const int16_t *mv_col = l1mv0[0];
1177 int mv_l0[2];
1178 mv_l0[0] = (dist_scale_factor * mv_col[0] + 128) >> 8;
1179 mv_l0[1] = (dist_scale_factor * mv_col[1] + 128) >> 8;
1180 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref0, 1);
1181 fill_rectangle(&h-> mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mv_l0[0],mv_l0[1]), 4);
1182 fill_rectangle(&h-> mv_cache[1][scan8[0]], 4, 4, 8, pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]), 4);
1183 }
1184 }else{
1185 for(i8=0; i8<4; i8++){
1186 const int x8 = i8&1;
1187 const int y8 = i8>>1;
1188 int ref0, dist_scale_factor;
1189
1190 if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1191 continue;
1192 h->sub_mb_type[i8] = sub_mb_type;
1193 if(IS_INTRA(mb_type_col)){
1194 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
1195 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1196 fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1197 fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1198 continue;
1199 }
1200
1201 ref0 = l1ref0[x8 + y8*h->b8_stride];
1202 dist_scale_factor = h->dist_scale_factor[ref0];
1203
1204 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
1205 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1206 for(i4=0; i4<4; i4++){
1207 const int16_t *mv_col = l1mv0[x8*2 + (i4&1) + (y8*2 + (i4>>1))*h->b_stride];
1208 int16_t *mv_l0 = h->mv_cache[0][scan8[i8*4+i4]];
1209 mv_l0[0] = (dist_scale_factor * mv_col[0] + 128) >> 8;
1210 mv_l0[1] = (dist_scale_factor * mv_col[1] + 128) >> 8;
1211 *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] =
1212 pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
1213 }
1214 }
1215 }
1216 }
1217}
1218
0da71265
MN
1219static inline void write_back_motion(H264Context *h, int mb_type){
1220 MpegEncContext * const s = &h->s;
0da71265
MN
1221 const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
1222 const int b8_xy= 2*s->mb_x + 2*s->mb_y*h->b8_stride;
1223 int list;
1224
1225 for(list=0; list<2; list++){
1226 int y;
1227 if((!IS_8X8(mb_type)) && !USES_LIST(mb_type, list)){
1228 if(1){ //FIXME skip or never read if mb_type doesnt use it
1229 for(y=0; y<4; y++){
1230 *(uint64_t*)s->current_picture.motion_val[list][b_xy + 0 + y*h->b_stride]=
1231 *(uint64_t*)s->current_picture.motion_val[list][b_xy + 2 + y*h->b_stride]= 0;
1232 }
9e528114
LA
1233 if( h->pps.cabac ) {
1234 /* FIXME needed ? */
1235 for(y=0; y<4; y++){
1236 *(uint64_t*)h->mvd_table[list][b_xy + 0 + y*h->b_stride]=
1237 *(uint64_t*)h->mvd_table[list][b_xy + 2 + y*h->b_stride]= 0;
1238 }
1239 }
0da71265 1240 for(y=0; y<2; y++){
7d7f635d 1241 *(uint16_t*)&s->current_picture.ref_index[list][b8_xy + y*h->b8_stride]= (LIST_NOT_USED&0xFF)*0x0101;
0da71265
MN
1242 }
1243 }
5ad984c9 1244 continue;
0da71265
MN
1245 }
1246
1247 for(y=0; y<4; y++){
1248 *(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];
1249 *(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];
1250 }
9e528114
LA
1251 if( h->pps.cabac ) {
1252 for(y=0; y<4; y++){
1253 *(uint64_t*)h->mvd_table[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+0 + 8*y];
1254 *(uint64_t*)h->mvd_table[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+2 + 8*y];
1255 }
1256 }
0da71265
MN
1257 for(y=0; y<2; y++){
1258 s->current_picture.ref_index[list][b8_xy + 0 + y*h->b8_stride]= h->ref_cache[list][scan8[0]+0 + 16*y];
1259 s->current_picture.ref_index[list][b8_xy + 1 + y*h->b8_stride]= h->ref_cache[list][scan8[0]+2 + 16*y];
1260 }
1261 }
5ad984c9
LM
1262
1263 if(h->slice_type == B_TYPE && h->pps.cabac){
1264 if(IS_8X8(mb_type)){
1265 h->direct_table[b8_xy+1+0*h->b8_stride] = IS_DIRECT(h->sub_mb_type[1]) ? 1 : 0;
1266 h->direct_table[b8_xy+0+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[2]) ? 1 : 0;
1267 h->direct_table[b8_xy+1+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[3]) ? 1 : 0;
1268 }
1269 }
0da71265
MN
1270}
1271
1272/**
1273 * Decodes a network abstraction layer unit.
1274 * @param consumed is the number of bytes used as input
1275 * @param length is the length of the array
1276 * @param dst_length is the number of decoded bytes FIXME here or a decode rbsp ttailing?
1277 * @returns decoded bytes, might be src+1 if no escapes
1278 */
1279static uint8_t *decode_nal(H264Context *h, uint8_t *src, int *dst_length, int *consumed, int length){
1280 int i, si, di;
1281 uint8_t *dst;
1282
1283// src[0]&0x80; //forbidden bit
1284 h->nal_ref_idc= src[0]>>5;
1285 h->nal_unit_type= src[0]&0x1F;
1286
1287 src++; length--;
1288#if 0
1289 for(i=0; i<length; i++)
1290 printf("%2X ", src[i]);
1291#endif
1292 for(i=0; i+1<length; i+=2){
1293 if(src[i]) continue;
1294 if(i>0 && src[i-1]==0) i--;
1295 if(i+2<length && src[i+1]==0 && src[i+2]<=3){
1296 if(src[i+2]!=3){
1297 /* startcode, so we must be past the end */
1298 length=i;
1299 }
1300 break;
1301 }
1302 }
1303
1304 if(i>=length-1){ //no escaped 0
1305 *dst_length= length;
1306 *consumed= length+1; //+1 for the header
1307 return src;
1308 }
1309
1310 h->rbsp_buffer= av_fast_realloc(h->rbsp_buffer, &h->rbsp_buffer_size, length);
1311 dst= h->rbsp_buffer;
1312
1313//printf("deoding esc\n");
1314 si=di=0;
1315 while(si<length){
1316 //remove escapes (very rare 1:2^22)
1317 if(si+2<length && src[si]==0 && src[si+1]==0 && src[si+2]<=3){
1318 if(src[si+2]==3){ //escape
1319 dst[di++]= 0;
1320 dst[di++]= 0;
1321 si+=3;
c8470cc1 1322 continue;
0da71265
MN
1323 }else //next start code
1324 break;
1325 }
1326
1327 dst[di++]= src[si++];
1328 }
1329
1330 *dst_length= di;
1331 *consumed= si + 1;//+1 for the header
1332//FIXME store exact number of bits in the getbitcontext (its needed for decoding)
1333 return dst;
1334}
1335
e5017ab8 1336#if 0
0da71265
MN
1337/**
1338 * @param src the data which should be escaped
1339 * @param dst the target buffer, dst+1 == src is allowed as a special case
1340 * @param length the length of the src data
1341 * @param dst_length the length of the dst array
1342 * @returns length of escaped data in bytes or -1 if an error occured
1343 */
1344static int encode_nal(H264Context *h, uint8_t *dst, uint8_t *src, int length, int dst_length){
1345 int i, escape_count, si, di;
1346 uint8_t *temp;
1347
1348 assert(length>=0);
1349 assert(dst_length>0);
1350
1351 dst[0]= (h->nal_ref_idc<<5) + h->nal_unit_type;
1352
1353 if(length==0) return 1;
1354
1355 escape_count= 0;
1356 for(i=0; i<length; i+=2){
1357 if(src[i]) continue;
1358 if(i>0 && src[i-1]==0)
1359 i--;
1360 if(i+2<length && src[i+1]==0 && src[i+2]<=3){
1361 escape_count++;
1362 i+=2;
1363 }
1364 }
1365
1366 if(escape_count==0){
1367 if(dst+1 != src)
1368 memcpy(dst+1, src, length);
1369 return length + 1;
1370 }
1371
1372 if(length + escape_count + 1> dst_length)
1373 return -1;
1374
1375 //this should be damn rare (hopefully)
1376
1377 h->rbsp_buffer= av_fast_realloc(h->rbsp_buffer, &h->rbsp_buffer_size, length + escape_count);
1378 temp= h->rbsp_buffer;
1379//printf("encoding esc\n");
1380
1381 si= 0;
1382 di= 0;
1383 while(si < length){
1384 if(si+2<length && src[si]==0 && src[si+1]==0 && src[si+2]<=3){
1385 temp[di++]= 0; si++;
1386 temp[di++]= 0; si++;
1387 temp[di++]= 3;
1388 temp[di++]= src[si++];
1389 }
1390 else
1391 temp[di++]= src[si++];
1392 }
1393 memcpy(dst+1, temp, length+escape_count);
1394
1395 assert(di == length+escape_count);
1396
1397 return di + 1;
1398}
1399
1400/**
1401 * write 1,10,100,1000,... for alignment, yes its exactly inverse to mpeg4
1402 */
1403static void encode_rbsp_trailing(PutBitContext *pb){
1404 int length;
1405 put_bits(pb, 1, 1);
fe455f33 1406 length= (-put_bits_count(pb))&7;
0da71265
MN
1407 if(length) put_bits(pb, length, 0);
1408}
e5017ab8 1409#endif
0da71265
MN
1410
1411/**
1412 * identifies the exact end of the bitstream
1413 * @return the length of the trailing, or 0 if damaged
1414 */
1415static int decode_rbsp_trailing(uint8_t *src){
1416 int v= *src;
1417 int r;
1418
95c26348 1419 tprintf("rbsp trailing %X\n", v);
0da71265
MN
1420
1421 for(r=1; r<9; r++){
1422 if(v&1) return r;
1423 v>>=1;
1424 }
1425 return 0;
1426}
1427
1428/**
1429 * idct tranforms the 16 dc values and dequantize them.
1430 * @param qp quantization parameter
1431 */
1432static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp){
1433 const int qmul= dequant_coeff[qp][0];
1434#define stride 16
1435 int i;
1436 int temp[16]; //FIXME check if this is a good idea
1437 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
1438 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1439
1440//memset(block, 64, 2*256);
1441//return;
1442 for(i=0; i<4; i++){
1443 const int offset= y_offset[i];
1444 const int z0= block[offset+stride*0] + block[offset+stride*4];
1445 const int z1= block[offset+stride*0] - block[offset+stride*4];
1446 const int z2= block[offset+stride*1] - block[offset+stride*5];
1447 const int z3= block[offset+stride*1] + block[offset+stride*5];
1448
1449 temp[4*i+0]= z0+z3;
1450 temp[4*i+1]= z1+z2;
1451 temp[4*i+2]= z1-z2;
1452 temp[4*i+3]= z0-z3;
1453 }
1454
1455 for(i=0; i<4; i++){
1456 const int offset= x_offset[i];
1457 const int z0= temp[4*0+i] + temp[4*2+i];
1458 const int z1= temp[4*0+i] - temp[4*2+i];
1459 const int z2= temp[4*1+i] - temp[4*3+i];
1460 const int z3= temp[4*1+i] + temp[4*3+i];
1461
1462 block[stride*0 +offset]= ((z0 + z3)*qmul + 2)>>2; //FIXME think about merging this into decode_resdual
1463 block[stride*2 +offset]= ((z1 + z2)*qmul + 2)>>2;
1464 block[stride*8 +offset]= ((z1 - z2)*qmul + 2)>>2;
1465 block[stride*10+offset]= ((z0 - z3)*qmul + 2)>>2;
1466 }
1467}
1468
e5017ab8 1469#if 0
0da71265
MN
1470/**
1471 * dct tranforms the 16 dc values.
1472 * @param qp quantization parameter ??? FIXME
1473 */
1474static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
1475// const int qmul= dequant_coeff[qp][0];
1476 int i;
1477 int temp[16]; //FIXME check if this is a good idea
1478 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
1479 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1480
1481 for(i=0; i<4; i++){
1482 const int offset= y_offset[i];
1483 const int z0= block[offset+stride*0] + block[offset+stride*4];
1484 const int z1= block[offset+stride*0] - block[offset+stride*4];
1485 const int z2= block[offset+stride*1] - block[offset+stride*5];
1486 const int z3= block[offset+stride*1] + block[offset+stride*5];
1487
1488 temp[4*i+0]= z0+z3;
1489 temp[4*i+1]= z1+z2;
1490 temp[4*i+2]= z1-z2;
1491 temp[4*i+3]= z0-z3;
1492 }
1493
1494 for(i=0; i<4; i++){
1495 const int offset= x_offset[i];
1496 const int z0= temp[4*0+i] + temp[4*2+i];
1497 const int z1= temp[4*0+i] - temp[4*2+i];
1498 const int z2= temp[4*1+i] - temp[4*3+i];
1499 const int z3= temp[4*1+i] + temp[4*3+i];
1500
1501 block[stride*0 +offset]= (z0 + z3)>>1;
1502 block[stride*2 +offset]= (z1 + z2)>>1;
1503 block[stride*8 +offset]= (z1 - z2)>>1;
1504 block[stride*10+offset]= (z0 - z3)>>1;
1505 }
1506}
e5017ab8
LA
1507#endif
1508
0da71265
MN
1509#undef xStride
1510#undef stride
1511
1512static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp){
1513 const int qmul= dequant_coeff[qp][0];
1514 const int stride= 16*2;
1515 const int xStride= 16;
1516 int a,b,c,d,e;
1517
1518 a= block[stride*0 + xStride*0];
1519 b= block[stride*0 + xStride*1];
1520 c= block[stride*1 + xStride*0];
1521 d= block[stride*1 + xStride*1];
1522
1523 e= a-b;
1524 a= a+b;
1525 b= c-d;
1526 c= c+d;
1527
1528 block[stride*0 + xStride*0]= ((a+c)*qmul + 0)>>1;
1529 block[stride*0 + xStride*1]= ((e+b)*qmul + 0)>>1;
1530 block[stride*1 + xStride*0]= ((a-c)*qmul + 0)>>1;
1531 block[stride*1 + xStride*1]= ((e-b)*qmul + 0)>>1;
1532}
1533
e5017ab8 1534#if 0
0da71265
MN
1535static void chroma_dc_dct_c(DCTELEM *block){
1536 const int stride= 16*2;
1537 const int xStride= 16;
1538 int a,b,c,d,e;
1539
1540 a= block[stride*0 + xStride*0];
1541 b= block[stride*0 + xStride*1];
1542 c= block[stride*1 + xStride*0];
1543 d= block[stride*1 + xStride*1];
1544
1545 e= a-b;
1546 a= a+b;
1547 b= c-d;
1548 c= c+d;
1549
1550 block[stride*0 + xStride*0]= (a+c);
1551 block[stride*0 + xStride*1]= (e+b);
1552 block[stride*1 + xStride*0]= (a-c);
1553 block[stride*1 + xStride*1]= (e-b);
1554}
e5017ab8 1555#endif
0da71265
MN
1556
1557/**
1558 * gets the chroma qp.
1559 */
1560static inline int get_chroma_qp(H264Context *h, int qscale){
1561
1562 return chroma_qp[clip(qscale + h->pps.chroma_qp_index_offset, 0, 51)];
1563}
1564
1565
e5017ab8 1566#if 0
0da71265
MN
1567static void h264_diff_dct_c(DCTELEM *block, uint8_t *src1, uint8_t *src2, int stride){
1568 int i;
1569 //FIXME try int temp instead of block
1570
1571 for(i=0; i<4; i++){
1572 const int d0= src1[0 + i*stride] - src2[0 + i*stride];
1573 const int d1= src1[1 + i*stride] - src2[1 + i*stride];
1574 const int d2= src1[2 + i*stride] - src2[2 + i*stride];
1575 const int d3= src1[3 + i*stride] - src2[3 + i*stride];
1576 const int z0= d0 + d3;
1577 const int z3= d0 - d3;
1578 const int z1= d1 + d2;
1579 const int z2= d1 - d2;
1580
1581 block[0 + 4*i]= z0 + z1;
1582 block[1 + 4*i]= 2*z3 + z2;
1583 block[2 + 4*i]= z0 - z1;
1584 block[3 + 4*i]= z3 - 2*z2;
1585 }
1586
1587 for(i=0; i<4; i++){
1588 const int z0= block[0*4 + i] + block[3*4 + i];
1589 const int z3= block[0*4 + i] - block[3*4 + i];
1590 const int z1= block[1*4 + i] + block[2*4 + i];
1591 const int z2= block[1*4 + i] - block[2*4 + i];
1592
1593 block[0*4 + i]= z0 + z1;
1594 block[1*4 + i]= 2*z3 + z2;
1595 block[2*4 + i]= z0 - z1;
1596 block[3*4 + i]= z3 - 2*z2;
1597 }
1598}
e5017ab8 1599#endif
0da71265
MN
1600
1601//FIXME need to check that this doesnt overflow signed 32 bit for low qp, iam not sure, its very close
1602//FIXME check that gcc inlines this (and optimizes intra & seperate_dc stuff away)
1603static inline int quantize_c(DCTELEM *block, uint8_t *scantable, int qscale, int intra, int seperate_dc){
1604 int i;
1605 const int * const quant_table= quant_coeff[qscale];
1606 const int bias= intra ? (1<<QUANT_SHIFT)/3 : (1<<QUANT_SHIFT)/6;
1607 const unsigned int threshold1= (1<<QUANT_SHIFT) - bias - 1;
1608 const unsigned int threshold2= (threshold1<<1);
1609 int last_non_zero;
1610
1611 if(seperate_dc){
1612 if(qscale<=18){
1613 //avoid overflows
1614 const int dc_bias= intra ? (1<<(QUANT_SHIFT-2))/3 : (1<<(QUANT_SHIFT-2))/6;
1615 const unsigned int dc_threshold1= (1<<(QUANT_SHIFT-2)) - dc_bias - 1;
1616 const unsigned int dc_threshold2= (dc_threshold1<<1);
1617
1618 int level= block[0]*quant_coeff[qscale+18][0];
1619 if(((unsigned)(level+dc_threshold1))>dc_threshold2){
1620 if(level>0){
1621 level= (dc_bias + level)>>(QUANT_SHIFT-2);
1622 block[0]= level;
1623 }else{
1624 level= (dc_bias - level)>>(QUANT_SHIFT-2);
1625 block[0]= -level;
1626 }
1627// last_non_zero = i;
1628 }else{
1629 block[0]=0;
1630 }
1631 }else{
1632 const int dc_bias= intra ? (1<<(QUANT_SHIFT+1))/3 : (1<<(QUANT_SHIFT+1))/6;
1633 const unsigned int dc_threshold1= (1<<(QUANT_SHIFT+1)) - dc_bias - 1;
1634 const unsigned int dc_threshold2= (dc_threshold1<<1);
1635
1636 int level= block[0]*quant_table[0];
1637 if(((unsigned)(level+dc_threshold1))>dc_threshold2){
1638 if(level>0){
1639 level= (dc_bias + level)>>(QUANT_SHIFT+1);
1640 block[0]= level;
1641 }else{
1642 level= (dc_bias - level)>>(QUANT_SHIFT+1);
1643 block[0]= -level;
1644 }
1645// last_non_zero = i;
1646 }else{
1647 block[0]=0;
1648 }
1649 }
1650 last_non_zero= 0;
1651 i=1;
1652 }else{
1653 last_non_zero= -1;
1654 i=0;
1655 }
1656
1657 for(; i<16; i++){
1658 const int j= scantable[i];
1659 int level= block[j]*quant_table[j];
1660
1661// if( bias+level >= (1<<(QMAT_SHIFT - 3))
1662// || bias-level >= (1<<(QMAT_SHIFT - 3))){
1663 if(((unsigned)(level+threshold1))>threshold2){
1664 if(level>0){
1665 level= (bias + level)>>QUANT_SHIFT;
1666 block[j]= level;
1667 }else{
1668 level= (bias - level)>>QUANT_SHIFT;
1669 block[j]= -level;
1670 }
1671 last_non_zero = i;
1672 }else{
1673 block[j]=0;
1674 }
1675 }
1676
1677 return last_non_zero;
1678}
1679
1680static void pred4x4_vertical_c(uint8_t *src, uint8_t *topright, int stride){
1681 const uint32_t a= ((uint32_t*)(src-stride))[0];
1682 ((uint32_t*)(src+0*stride))[0]= a;
1683 ((uint32_t*)(src+1*stride))[0]= a;
1684 ((uint32_t*)(src+2*stride))[0]= a;
1685 ((uint32_t*)(src+3*stride))[0]= a;
1686}
1687
1688static void pred4x4_horizontal_c(uint8_t *src, uint8_t *topright, int stride){
1689 ((uint32_t*)(src+0*stride))[0]= src[-1+0*stride]*0x01010101;
1690 ((uint32_t*)(src+1*stride))[0]= src[-1+1*stride]*0x01010101;
1691 ((uint32_t*)(src+2*stride))[0]= src[-1+2*stride]*0x01010101;
1692 ((uint32_t*)(src+3*stride))[0]= src[-1+3*stride]*0x01010101;
1693}
1694
1695static void pred4x4_dc_c(uint8_t *src, uint8_t *topright, int stride){
1696 const int dc= ( src[-stride] + src[1-stride] + src[2-stride] + src[3-stride]
1697 + src[-1+0*stride] + src[-1+1*stride] + src[-1+2*stride] + src[-1+3*stride] + 4) >>3;
1698
1699 ((uint32_t*)(src+0*stride))[0]=
1700 ((uint32_t*)(src+1*stride))[0]=
1701 ((uint32_t*)(src+2*stride))[0]=
1702 ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101;
1703}
1704
1705static void pred4x4_left_dc_c(uint8_t *src, uint8_t *topright, int stride){
1706 const int dc= ( src[-1+0*stride] + src[-1+1*stride] + src[-1+2*stride] + src[-1+3*stride] + 2) >>2;
1707
1708 ((uint32_t*)(src+0*stride))[0]=
1709 ((uint32_t*)(src+1*stride))[0]=
1710 ((uint32_t*)(src+2*stride))[0]=
1711 ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101;
1712}
1713
1714static void pred4x4_top_dc_c(uint8_t *src, uint8_t *topright, int stride){
1715 const int dc= ( src[-stride] + src[1-stride] + src[2-stride] + src[3-stride] + 2) >>2;
1716
1717 ((uint32_t*)(src+0*stride))[0]=
1718 ((uint32_t*)(src+1*stride))[0]=
1719 ((uint32_t*)(src+2*stride))[0]=
1720 ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101;
1721}
1722
1723static void pred4x4_128_dc_c(uint8_t *src, uint8_t *topright, int stride){
1724 ((uint32_t*)(src+0*stride))[0]=
1725 ((uint32_t*)(src+1*stride))[0]=
1726 ((uint32_t*)(src+2*stride))[0]=
1727 ((uint32_t*)(src+3*stride))[0]= 128U*0x01010101U;
1728}
1729
1730
1731#define LOAD_TOP_RIGHT_EDGE\
1732 const int t4= topright[0];\
1733 const int t5= topright[1];\
1734 const int t6= topright[2];\
1735 const int t7= topright[3];\
1736
1737#define LOAD_LEFT_EDGE\
1738 const int l0= src[-1+0*stride];\
1739 const int l1= src[-1+1*stride];\
1740 const int l2= src[-1+2*stride];\
1741 const int l3= src[-1+3*stride];\
1742
1743#define LOAD_TOP_EDGE\
1744 const int t0= src[ 0-1*stride];\
1745 const int t1= src[ 1-1*stride];\
1746 const int t2= src[ 2-1*stride];\
1747 const int t3= src[ 3-1*stride];\
1748
1749static void pred4x4_down_right_c(uint8_t *src, uint8_t *topright, int stride){
1750 const int lt= src[-1-1*stride];
1751 LOAD_TOP_EDGE
1752 LOAD_LEFT_EDGE
1753
1754 src[0+3*stride]=(l3 + 2*l2 + l1 + 2)>>2;
1755 src[0+2*stride]=
1756 src[1+3*stride]=(l2 + 2*l1 + l0 + 2)>>2;
1757 src[0+1*stride]=
1758 src[1+2*stride]=
1759 src[2+3*stride]=(l1 + 2*l0 + lt + 2)>>2;
1760 src[0+0*stride]=
1761 src[1+1*stride]=
1762 src[2+2*stride]=
1763 src[3+3*stride]=(l0 + 2*lt + t0 + 2)>>2;
1764 src[1+0*stride]=
1765 src[2+1*stride]=
1766 src[3+2*stride]=(lt + 2*t0 + t1 + 2)>>2;
1767 src[2+0*stride]=
1768 src[3+1*stride]=(t0 + 2*t1 + t2 + 2)>>2;
1769 src[3+0*stride]=(t1 + 2*t2 + t3 + 2)>>2;
4cfbf61b 1770}
0da71265
MN
1771
1772static void pred4x4_down_left_c(uint8_t *src, uint8_t *topright, int stride){
1773 LOAD_TOP_EDGE
1774 LOAD_TOP_RIGHT_EDGE
1775// LOAD_LEFT_EDGE
1776
1777 src[0+0*stride]=(t0 + t2 + 2*t1 + 2)>>2;
1778 src[1+0*stride]=
1779 src[0+1*stride]=(t1 + t3 + 2*t2 + 2)>>2;
1780 src[2+0*stride]=
1781 src[1+1*stride]=
1782 src[0+2*stride]=(t2 + t4 + 2*t3 + 2)>>2;
1783 src[3+0*stride]=
1784 src[2+1*stride]=
1785 src[1+2*stride]=
1786 src[0+3*stride]=(t3 + t5 + 2*t4 + 2)>>2;
1787 src[3+1*stride]=
1788 src[2+2*stride]=
1789 src[1+3*stride]=(t4 + t6 + 2*t5 + 2)>>2;
1790 src[3+2*stride]=
1791 src[2+3*stride]=(t5 + t7 + 2*t6 + 2)>>2;
1792 src[3+3*stride]=(t6 + 3*t7 + 2)>>2;
4cfbf61b 1793}
0da71265
MN
1794
1795static void pred4x4_vertical_right_c(uint8_t *src, uint8_t *topright, int stride){
1796 const int lt= src[-1-1*stride];
1797 LOAD_TOP_EDGE
1798 LOAD_LEFT_EDGE
1799 const __attribute__((unused)) int unu= l3;
1800
1801 src[0+0*stride]=
1802 src[1+2*stride]=(lt + t0 + 1)>>1;
1803 src[1+0*stride]=
1804 src[2+2*stride]=(t0 + t1 + 1)>>1;
1805 src[2+0*stride]=
1806 src[3+2*stride]=(t1 + t2 + 1)>>1;
1807 src[3+0*stride]=(t2 + t3 + 1)>>1;
1808 src[0+1*stride]=
1809 src[1+3*stride]=(l0 + 2*lt + t0 + 2)>>2;
1810 src[1+1*stride]=
1811 src[2+3*stride]=(lt + 2*t0 + t1 + 2)>>2;
1812 src[2+1*stride]=
1813 src[3+3*stride]=(t0 + 2*t1 + t2 + 2)>>2;
1814 src[3+1*stride]=(t1 + 2*t2 + t3 + 2)>>2;
1815 src[0+2*stride]=(lt + 2*l0 + l1 + 2)>>2;
1816 src[0+3*stride]=(l0 + 2*l1 + l2 + 2)>>2;
4cfbf61b 1817}
0da71265
MN
1818
1819static void pred4x4_vertical_left_c(uint8_t *src, uint8_t *topright, int stride){
1820 LOAD_TOP_EDGE
1821 LOAD_TOP_RIGHT_EDGE
1822 const __attribute__((unused)) int unu= t7;
1823
1824 src[0+0*stride]=(t0 + t1 + 1)>>1;
1825 src[1+0*stride]=
1826 src[0+2*stride]=(t1 + t2 + 1)>>1;
1827 src[2+0*stride]=
1828 src[1+2*stride]=(t2 + t3 + 1)>>1;
1829 src[3+0*stride]=
1830 src[2+2*stride]=(t3 + t4+ 1)>>1;
1831 src[3+2*stride]=(t4 + t5+ 1)>>1;
1832 src[0+1*stride]=(t0 + 2*t1 + t2 + 2)>>2;
1833 src[1+1*stride]=
1834 src[0+3*stride]=(t1 + 2*t2 + t3 + 2)>>2;
1835 src[2+1*stride]=
1836 src[1+3*stride]=(t2 + 2*t3 + t4 + 2)>>2;
1837 src[3+1*stride]=
1838 src[2+3*stride]=(t3 + 2*t4 + t5 + 2)>>2;
1839 src[3+3*stride]=(t4 + 2*t5 + t6 + 2)>>2;
4cfbf61b 1840}
0da71265
MN
1841
1842static void pred4x4_horizontal_up_c(uint8_t *src, uint8_t *topright, int stride){
1843 LOAD_LEFT_EDGE
1844
1845 src[0+0*stride]=(l0 + l1 + 1)>>1;
1846 src[1+0*stride]=(l0 + 2*l1 + l2 + 2)>>2;
1847 src[2+0*stride]=
1848 src[0+1*stride]=(l1 + l2 + 1)>>1;
1849 src[3+0*stride]=
1850 src[1+1*stride]=(l1 + 2*l2 + l3 + 2)>>2;
1851 src[2+1*stride]=
1852 src[0+2*stride]=(l2 + l3 + 1)>>1;
1853 src[3+1*stride]=
1854 src[1+2*stride]=(l2 + 2*l3 + l3 + 2)>>2;
1855 src[3+2*stride]=
1856 src[1+3*stride]=
1857 src[0+3*stride]=
1858 src[2+2*stride]=
1859 src[2+3*stride]=
1860 src[3+3*stride]=l3;
4cfbf61b 1861}
0da71265
MN
1862
1863static void pred4x4_horizontal_down_c(uint8_t *src, uint8_t *topright, int stride){
1864 const int lt= src[-1-1*stride];
1865 LOAD_TOP_EDGE
1866 LOAD_LEFT_EDGE
1867 const __attribute__((unused)) int unu= t3;
1868
1869 src[0+0*stride]=
1870 src[2+1*stride]=(lt + l0 + 1)>>1;
1871 src[1+0*stride]=
1872 src[3+1*stride]=(l0 + 2*lt + t0 + 2)>>2;
1873 src[2+0*stride]=(lt + 2*t0 + t1 + 2)>>2;
1874 src[3+0*stride]=(t0 + 2*t1 + t2 + 2)>>2;
1875 src[0+1*stride]=
1876 src[2+2*stride]=(l0 + l1 + 1)>>1;
1877 src[1+1*stride]=
1878 src[3+2*stride]=(lt + 2*l0 + l1 + 2)>>2;
1879 src[0+2*stride]=
1880 src[2+3*stride]=(l1 + l2+ 1)>>1;
1881 src[1+2*stride]=
1882 src[3+3*stride]=(l0 + 2*l1 + l2 + 2)>>2;
1883 src[0+3*stride]=(l2 + l3 + 1)>>1;
1884 src[1+3*stride]=(l1 + 2*l2 + l3 + 2)>>2;
4cfbf61b 1885}
0da71265
MN
1886
1887static void pred16x16_vertical_c(uint8_t *src, int stride){
1888 int i;
1889 const uint32_t a= ((uint32_t*)(src-stride))[0];
1890 const uint32_t b= ((uint32_t*)(src-stride))[1];
1891 const uint32_t c= ((uint32_t*)(src-stride))[2];
1892 const uint32_t d= ((uint32_t*)(src-stride))[3];
1893
1894 for(i=0; i<16; i++){
1895 ((uint32_t*)(src+i*stride))[0]= a;
1896 ((uint32_t*)(src+i*stride))[1]= b;
1897 ((uint32_t*)(src+i*stride))[2]= c;
1898 ((uint32_t*)(src+i*stride))[3]= d;
1899 }
1900}
1901
1902static void pred16x16_horizontal_c(uint8_t *src, int stride){
1903 int i;
1904
1905 for(i=0; i<16; i++){
1906 ((uint32_t*)(src+i*stride))[0]=
1907 ((uint32_t*)(src+i*stride))[1]=
1908 ((uint32_t*)(src+i*stride))[2]=
1909 ((uint32_t*)(src+i*stride))[3]= src[-1+i*stride]*0x01010101;
1910 }
1911}
1912
1913static void pred16x16_dc_c(uint8_t *src, int stride){
1914 int i, dc=0;
1915
1916 for(i=0;i<16; i++){
1917 dc+= src[-1+i*stride];
1918 }
1919
1920 for(i=0;i<16; i++){
1921 dc+= src[i-stride];
1922 }
1923
1924 dc= 0x01010101*((dc + 16)>>5);
1925
1926 for(i=0; i<16; i++){
1927 ((uint32_t*)(src+i*stride))[0]=
1928 ((uint32_t*)(src+i*stride))[1]=
1929 ((uint32_t*)(src+i*stride))[2]=
1930 ((uint32_t*)(src+i*stride))[3]= dc;
1931 }
1932}
1933
1934static void pred16x16_left_dc_c(uint8_t *src, int stride){
1935 int i, dc=0;
1936
1937 for(i=0;i<16; i++){
1938 dc+= src[-1+i*stride];
1939 }
1940
1941 dc= 0x01010101*((dc + 8)>>4);
1942
1943 for(i=0; i<16; i++){
1944 ((uint32_t*)(src+i*stride))[0]=
1945 ((uint32_t*)(src+i*stride))[1]=
1946 ((uint32_t*)(src+i*stride))[2]=
1947 ((uint32_t*)(src+i*stride))[3]= dc;
1948 }
1949}
1950
1951static void pred16x16_top_dc_c(uint8_t *src, int stride){
1952 int i, dc=0;
1953
1954 for(i=0;i<16; i++){
1955 dc+= src[i-stride];
1956 }
1957 dc= 0x01010101*((dc + 8)>>4);
1958
1959 for(i=0; i<16; i++){
1960 ((uint32_t*)(src+i*stride))[0]=
1961 ((uint32_t*)(src+i*stride))[1]=
1962 ((uint32_t*)(src+i*stride))[2]=
1963 ((uint32_t*)(src+i*stride))[3]= dc;
1964 }
1965}
1966
1967static void pred16x16_128_dc_c(uint8_t *src, int stride){
1968 int i;
1969
1970 for(i=0; i<16; i++){
1971 ((uint32_t*)(src+i*stride))[0]=
1972 ((uint32_t*)(src+i*stride))[1]=
1973 ((uint32_t*)(src+i*stride))[2]=
1974 ((uint32_t*)(src+i*stride))[3]= 0x01010101U*128U;
1975 }
1976}
1977
8b82a956 1978static inline void pred16x16_plane_compat_c(uint8_t *src, int stride, const int svq3){
30f73fc7
MN
1979 int i, j, k;
1980 int a;
1981 uint8_t *cm = cropTbl + MAX_NEG_CROP;
1982 const uint8_t * const src0 = src+7-stride;
1983 const uint8_t *src1 = src+8*stride-1;
1984 const uint8_t *src2 = src1-2*stride; // == src+6*stride-1;
1985 int H = src0[1] - src0[-1];
1986 int V = src1[0] - src2[ 0];
1987 for(k=2; k<=8; ++k) {
1988 src1 += stride; src2 -= stride;
1989 H += k*(src0[k] - src0[-k]);
1990 V += k*(src1[0] - src2[ 0]);
1991 }
8b82a956
MN
1992 if(svq3){
1993 H = ( 5*(H/4) ) / 16;
1994 V = ( 5*(V/4) ) / 16;
2e26c8d2
MM
1995
1996 /* required for 100% accuracy */
1997 i = H; H = V; V = i;
8b82a956
MN
1998 }else{
1999 H = ( 5*H+32 ) >> 6;
2000 V = ( 5*V+32 ) >> 6;
2001 }
30f73fc7
MN
2002
2003 a = 16*(src1[0] + src2[16] + 1) - 7*(V+H);
2004 for(j=16; j>0; --j) {
2005 int b = a;
2006 a += V;
2007 for(i=-16; i<0; i+=4) {
2008 src[16+i] = cm[ (b ) >> 5 ];
2009 src[17+i] = cm[ (b+ H) >> 5 ];
2010 src[18+i] = cm[ (b+2*H) >> 5 ];
2011 src[19+i] = cm[ (b+3*H) >> 5 ];
2012 b += 4*H;
0da71265 2013 }
30f73fc7
MN
2014 src += stride;
2015 }
0da71265
MN
2016}
2017
8b82a956
MN
2018static void pred16x16_plane_c(uint8_t *src, int stride){
2019 pred16x16_plane_compat_c(src, stride, 0);
2020}
2021
0da71265
MN
2022static void pred8x8_vertical_c(uint8_t *src, int stride){
2023 int i;
2024 const uint32_t a= ((uint32_t*)(src-stride))[0];
2025 const uint32_t b= ((uint32_t*)(src-stride))[1];
2026
2027 for(i=0; i<8; i++){
2028 ((uint32_t*)(src+i*stride))[0]= a;
2029 ((uint32_t*)(src+i*stride))[1]= b;
2030 }
2031}
2032
2033static void pred8x8_horizontal_c(uint8_t *src, int stride){
2034 int i;
2035
2036 for(i=0; i<8; i++){
2037 ((uint32_t*)(src+i*stride))[0]=
2038 ((uint32_t*)(src+i*stride))[1]= src[-1+i*stride]*0x01010101;
2039 }
2040}
2041
2042static void pred8x8_128_dc_c(uint8_t *src, int stride){
2043 int i;
2044
2045 for(i=0; i<4; i++){
2046 ((uint32_t*)(src+i*stride))[0]=
2047 ((uint32_t*)(src+i*stride))[1]= 0x01010101U*128U;
2048 }
2049 for(i=4; i<8; i++){
2050 ((uint32_t*)(src+i*stride))[0]=
2051 ((uint32_t*)(src+i*stride))[1]= 0x01010101U*128U;
2052 }
2053}
2054
2055static void pred8x8_left_dc_c(uint8_t *src, int stride){
2056 int i;
2057 int dc0, dc2;
2058
2059 dc0=dc2=0;
2060 for(i=0;i<4; i++){
2061 dc0+= src[-1+i*stride];
2062 dc2+= src[-1+(i+4)*stride];
2063 }
2064 dc0= 0x01010101*((dc0 + 2)>>2);
2065 dc2= 0x01010101*((dc2 + 2)>>2);
2066
2067 for(i=0; i<4; i++){
2068 ((uint32_t*)(src+i*stride))[0]=
2069 ((uint32_t*)(src+i*stride))[1]= dc0;
2070 }
2071 for(i=4; i<8; i++){
2072 ((uint32_t*)(src+i*stride))[0]=
2073 ((uint32_t*)(src+i*stride))[1]= dc2;
2074 }
2075}
2076
2077static void pred8x8_top_dc_c(uint8_t *src, int stride){
2078 int i;
2079 int dc0, dc1;
2080
2081 dc0=dc1=0;
2082 for(i=0;i<4; i++){
2083 dc0+= src[i-stride];
2084 dc1+= src[4+i-stride];
2085 }
2086 dc0= 0x01010101*((dc0 + 2)>>2);
2087 dc1= 0x01010101*((dc1 + 2)>>2);
2088
2089 for(i=0; i<4; i++){
2090 ((uint32_t*)(src+i*stride))[0]= dc0;
2091 ((uint32_t*)(src+i*stride))[1]= dc1;
2092 }
2093 for(i=4; i<8; i++){
2094 ((uint32_t*)(src+i*stride))[0]= dc0;
2095 ((uint32_t*)(src+i*stride))[1]= dc1;
2096 }
2097}
2098
2099
2100static void pred8x8_dc_c(uint8_t *src, int stride){
2101 int i;
2102 int dc0, dc1, dc2, dc3;
2103
2104 dc0=dc1=dc2=0;
2105 for(i=0;i<4; i++){
2106 dc0+= src[-1+i*stride] + src[i-stride];
2107 dc1+= src[4+i-stride];
2108 dc2+= src[-1+(i+4)*stride];
2109 }
2110 dc3= 0x01010101*((dc1 + dc2 + 4)>>3);
2111 dc0= 0x01010101*((dc0 + 4)>>3);
2112 dc1= 0x01010101*((dc1 + 2)>>2);
2113 dc2= 0x01010101*((dc2 + 2)>>2);
2114
2115 for(i=0; i<4; i++){
2116 ((uint32_t*)(src+i*stride))[0]= dc0;
2117 ((uint32_t*)(src+i*stride))[1]= dc1;
2118 }
2119 for(i=4; i<8; i++){
2120 ((uint32_t*)(src+i*stride))[0]= dc2;
2121 ((uint32_t*)(src+i*stride))[1]= dc3;
2122 }
2123}
2124
2125static void pred8x8_plane_c(uint8_t *src, int stride){
30f73fc7
MN
2126 int j, k;
2127 int a;
2128 uint8_t *cm = cropTbl + MAX_NEG_CROP;
2129 const uint8_t * const src0 = src+3-stride;
2130 const uint8_t *src1 = src+4*stride-1;
2131 const uint8_t *src2 = src1-2*stride; // == src+2*stride-1;
2132 int H = src0[1] - src0[-1];
2133 int V = src1[0] - src2[ 0];
2134 for(k=2; k<=4; ++k) {
2135 src1 += stride; src2 -= stride;
2136 H += k*(src0[k] - src0[-k]);
2137 V += k*(src1[0] - src2[ 0]);
2138 }
2139 H = ( 17*H+16 ) >> 5;
2140 V = ( 17*V+16 ) >> 5;
2141
2142 a = 16*(src1[0] + src2[8]+1) - 3*(V+H);
2143 for(j=8; j>0; --j) {
2144 int b = a;
2145 a += V;
2146 src[0] = cm[ (b ) >> 5 ];
2147 src[1] = cm[ (b+ H) >> 5 ];
2148 src[2] = cm[ (b+2*H) >> 5 ];
2149 src[3] = cm[ (b+3*H) >> 5 ];
2150 src[4] = cm[ (b+4*H) >> 5 ];
2151 src[5] = cm[ (b+5*H) >> 5 ];
2152 src[6] = cm[ (b+6*H) >> 5 ];
2153 src[7] = cm[ (b+7*H) >> 5 ];
2154 src += stride;
2155 }
0da71265
MN
2156}
2157
2158static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
2159 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
2160 int src_x_offset, int src_y_offset,
2161 qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
2162 MpegEncContext * const s = &h->s;
2163 const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
2164 const int my= h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
2165 const int luma_xy= (mx&3) + ((my&3)<<2);
2166 uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*s->linesize;
2167 uint8_t * src_cb= pic->data[1] + (mx>>3) + (my>>3)*s->uvlinesize;
2168 uint8_t * src_cr= pic->data[2] + (mx>>3) + (my>>3)*s->uvlinesize;
2169 int extra_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16; //FIXME increase edge?, IMHO not worth it
2170 int extra_height= extra_width;
2171 int emu=0;
2172 const int full_mx= mx>>2;
2173 const int full_my= my>>2;
2174
2175 assert(pic->data[0]);
2176
2177 if(mx&7) extra_width -= 3;
2178 if(my&7) extra_height -= 3;
2179
2180 if( full_mx < 0-extra_width
2181 || full_my < 0-extra_height
2182 || full_mx + 16/*FIXME*/ > s->width + extra_width
2183 || full_my + 16/*FIXME*/ > s->height + extra_height){
c009df3f 2184 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);
0da71265
MN
2185 src_y= s->edge_emu_buffer + 2 + 2*s->linesize;
2186 emu=1;
2187 }
2188
2189 qpix_op[luma_xy](dest_y, src_y, s->linesize); //FIXME try variable height perhaps?
2190 if(!square){
2191 qpix_op[luma_xy](dest_y + delta, src_y + delta, s->linesize);
2192 }
2193
2194 if(s->flags&CODEC_FLAG_GRAY) return;
2195
2196 if(emu){
c009df3f 2197 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);
0da71265
MN
2198 src_cb= s->edge_emu_buffer;
2199 }
2200 chroma_op(dest_cb, src_cb, s->uvlinesize, chroma_height, mx&7, my&7);
2201
2202 if(emu){
c009df3f 2203 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);
0da71265
MN
2204 src_cr= s->edge_emu_buffer;
2205 }
2206 chroma_op(dest_cr, src_cr, s->uvlinesize, chroma_height, mx&7, my&7);
2207}
2208
9f2d1b4f 2209static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
0da71265
MN
2210 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
2211 int x_offset, int y_offset,
2212 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
2213 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
2214 int list0, int list1){
2215 MpegEncContext * const s = &h->s;
2216 qpel_mc_func *qpix_op= qpix_put;
2217 h264_chroma_mc_func chroma_op= chroma_put;
2218
2219 dest_y += 2*x_offset + 2*y_offset*s-> linesize;
2220 dest_cb += x_offset + y_offset*s->uvlinesize;
2221 dest_cr += x_offset + y_offset*s->uvlinesize;
2222 x_offset += 8*s->mb_x;
2223 y_offset += 8*s->mb_y;
2224
2225 if(list0){
1924f3ce 2226 Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
0da71265
MN
2227 mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
2228 dest_y, dest_cb, dest_cr, x_offset, y_offset,
2229 qpix_op, chroma_op);
2230
2231 qpix_op= qpix_avg;
2232 chroma_op= chroma_avg;
2233 }
2234
2235 if(list1){
1924f3ce 2236 Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
0da71265
MN
2237 mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
2238 dest_y, dest_cb, dest_cr, x_offset, y_offset,
2239 qpix_op, chroma_op);
2240 }
2241}
2242
9f2d1b4f
LM
2243static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
2244 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
2245 int x_offset, int y_offset,
2246 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
2247 h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
2248 h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
2249 int list0, int list1){
2250 MpegEncContext * const s = &h->s;
2251
2252 dest_y += 2*x_offset + 2*y_offset*s-> linesize;
2253 dest_cb += x_offset + y_offset*s->uvlinesize;
2254 dest_cr += x_offset + y_offset*s->uvlinesize;
2255 x_offset += 8*s->mb_x;
2256 y_offset += 8*s->mb_y;
2257
2258 if(list0 && list1){
2259 /* don't optimize for luma-only case, since B-frames usually
2260 * use implicit weights => chroma too. */
2261 uint8_t *tmp_cb = s->obmc_scratchpad;
2262 uint8_t *tmp_cr = tmp_cb + 8*s->uvlinesize;
2263 uint8_t *tmp_y = tmp_cr + 8*s->uvlinesize;
2264 int refn0 = h->ref_cache[0][ scan8[n] ];
2265 int refn1 = h->ref_cache[1][ scan8[n] ];
2266
2267 mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
2268 dest_y, dest_cb, dest_cr,
2269 x_offset, y_offset, qpix_put, chroma_put);
2270 mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
2271 tmp_y, tmp_cb, tmp_cr,
2272 x_offset, y_offset, qpix_put, chroma_put);
2273
2274 if(h->use_weight == 2){
2275 int weight0 = h->implicit_weight[refn0][refn1];
2276 int weight1 = 64 - weight0;
2277 luma_weight_avg( dest_y, tmp_y, s-> linesize, 5, weight0, weight1, 0, 0);
2278 chroma_weight_avg(dest_cb, tmp_cb, s->uvlinesize, 5, weight0, weight1, 0, 0);
2279 chroma_weight_avg(dest_cr, tmp_cr, s->uvlinesize, 5, weight0, weight1, 0, 0);
2280 }else{
2281 luma_weight_avg(dest_y, tmp_y, s->linesize, h->luma_log2_weight_denom,
2282 h->luma_weight[0][refn0], h->luma_weight[1][refn1],
2283 h->luma_offset[0][refn0], h->luma_offset[1][refn1]);
2284 chroma_weight_avg(dest_cb, tmp_cb, s->uvlinesize, h->chroma_log2_weight_denom,
2285 h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0],
2286 h->chroma_offset[0][refn0][0], h->chroma_offset[1][refn1][0]);
2287 chroma_weight_avg(dest_cr, tmp_cr, s->uvlinesize, h->chroma_log2_weight_denom,
2288 h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1],
2289 h->chroma_offset[0][refn0][1], h->chroma_offset[1][refn1][1]);
2290 }
2291 }else{
2292 int list = list1 ? 1 : 0;
2293 int refn = h->ref_cache[list][ scan8[n] ];
2294 Picture *ref= &h->ref_list[list][refn];
2295 mc_dir_part(h, ref, n, square, chroma_height, delta, list,
2296 dest_y, dest_cb, dest_cr, x_offset, y_offset,
2297 qpix_put, chroma_put);
2298
2299 luma_weight_op(dest_y, s->linesize, h->luma_log2_weight_denom,
2300 h->luma_weight[list][refn], h->luma_offset[list][refn]);
2301 if(h->use_weight_chroma){
2302 chroma_weight_op(dest_cb, s->uvlinesize, h->chroma_log2_weight_denom,
2303 h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]);
2304 chroma_weight_op(dest_cr, s->uvlinesize, h->chroma_log2_weight_denom,
2305 h->chroma_weight[list][refn][1], h->chroma_offset[list][refn][1]);
2306 }
2307 }
2308}
2309
2310static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
2311 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
2312 int x_offset, int y_offset,
2313 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
2314 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
2315 h264_weight_func *weight_op, h264_biweight_func *weight_avg,
2316 int list0, int list1){
2317 if((h->use_weight==2 && list0 && list1
2318 && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32))
2319 || h->use_weight==1)
2320 mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
2321 x_offset, y_offset, qpix_put, chroma_put,
2322 weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
2323 else
2324 mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
2325 x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
2326}
2327
0da71265
MN
2328static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
2329 qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
9f2d1b4f
LM
2330 qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
2331 h264_weight_func *weight_op, h264_biweight_func *weight_avg){
0da71265 2332 MpegEncContext * const s = &h->s;
7bc9090a 2333 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
0da71265
MN
2334 const int mb_type= s->current_picture.mb_type[mb_xy];
2335
2336 assert(IS_INTER(mb_type));
2337
2338 if(IS_16X16(mb_type)){
2339 mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
2340 qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
9f2d1b4f 2341 &weight_op[0], &weight_avg[0],
0da71265
MN
2342 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
2343 }else if(IS_16X8(mb_type)){
2344 mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
2345 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
9f2d1b4f 2346 &weight_op[1], &weight_avg[1],
0da71265
MN
2347 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
2348 mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
2349 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
9f2d1b4f 2350 &weight_op[1], &weight_avg[1],
0da71265
MN
2351 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
2352 }else if(IS_8X16(mb_type)){
2353 mc_part(h, 0, 0, 8, 8*s->linesize, dest_y, dest_cb, dest_cr, 0, 0,
2354 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
9f2d1b4f 2355 &weight_op[2], &weight_avg[2],
0da71265
MN
2356 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
2357 mc_part(h, 4, 0, 8, 8*s->linesize, dest_y, dest_cb, dest_cr, 4, 0,
2358 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
9f2d1b4f 2359 &weight_op[2], &weight_avg[2],
0da71265
MN
2360 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
2361 }else{
2362 int i;
2363
2364 assert(IS_8X8(mb_type));
2365
2366 for(i=0; i<4; i++){
2367 const int sub_mb_type= h->sub_mb_type[i];
2368 const int n= 4*i;
2369 int x_offset= (i&1)<<2;
2370 int y_offset= (i&2)<<1;
2371
2372 if(IS_SUB_8X8(sub_mb_type)){
2373 mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
2374 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
9f2d1b4f 2375 &weight_op[3], &weight_avg[3],
0da71265
MN
2376 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2377 }else if(IS_SUB_8X4(sub_mb_type)){
2378 mc_part(h, n , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
2379 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
9f2d1b4f 2380 &weight_op[4], &weight_avg[4],
0da71265
MN
2381 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2382 mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
2383 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
9f2d1b4f 2384 &weight_op[4], &weight_avg[4],
0da71265
MN
2385 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2386 }else if(IS_SUB_4X8(sub_mb_type)){
2387 mc_part(h, n , 0, 4, 4*s->linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
2388 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
9f2d1b4f 2389 &weight_op[5], &weight_avg[5],
0da71265
MN
2390 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2391 mc_part(h, n+1, 0, 4, 4*s->linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
2392 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
9f2d1b4f 2393 &weight_op[5], &weight_avg[5],
0da71265
MN
2394 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2395 }else{
2396 int j;
2397 assert(IS_SUB_4X4(sub_mb_type));
2398 for(j=0; j<4; j++){
2399 int sub_x_offset= x_offset + 2*(j&1);
2400 int sub_y_offset= y_offset + (j&2);
2401 mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
2402 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
9f2d1b4f 2403 &weight_op[6], &weight_avg[6],
0da71265
MN
2404 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2405 }
2406 }
2407 }
2408 }
2409}
2410
2411static void decode_init_vlc(H264Context *h){
2412 static int done = 0;
2413
2414 if (!done) {
2415 int i;
2416 done = 1;
2417
2418 init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5,
2419 &chroma_dc_coeff_token_len [0], 1, 1,
073c2593 2420 &chroma_dc_coeff_token_bits[0], 1, 1, 1);
0da71265
MN
2421
2422 for(i=0; i<4; i++){
2423 init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17,
2424 &coeff_token_len [i][0], 1, 1,
073c2593 2425 &coeff_token_bits[i][0], 1, 1, 1);
0da71265
MN
2426 }
2427
2428 for(i=0; i<3; i++){
2429 init_vlc(&chroma_dc_total_zeros_vlc[i], CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4,
2430 &chroma_dc_total_zeros_len [i][0], 1, 1,
073c2593 2431 &chroma_dc_total_zeros_bits[i][0], 1, 1, 1);
0da71265
MN
2432 }
2433 for(i=0; i<15; i++){
2434 init_vlc(&total_zeros_vlc[i], TOTAL_ZEROS_VLC_BITS, 16,
2435 &total_zeros_len [i][0], 1, 1,
073c2593 2436 &total_zeros_bits[i][0], 1, 1, 1);
0da71265
MN
2437 }
2438
2439 for(i=0; i<6; i++){
2440 init_vlc(&run_vlc[i], RUN_VLC_BITS, 7,
2441 &run_len [i][0], 1, 1,
073c2593 2442 &run_bits[i][0], 1, 1, 1);
0da71265
MN
2443 }
2444 init_vlc(&run7_vlc, RUN7_VLC_BITS, 16,
2445 &run_len [6][0], 1, 1,
073c2593 2446 &run_bits[6][0], 1, 1, 1);
0da71265
MN
2447 }
2448}
2449
2450/**
2451 * Sets the intra prediction function pointers.
2452 */
2453static void init_pred_ptrs(H264Context *h){
2454// MpegEncContext * const s = &h->s;
2455
2456 h->pred4x4[VERT_PRED ]= pred4x4_vertical_c;
2457 h->pred4x4[HOR_PRED ]= pred4x4_horizontal_c;
2458 h->pred4x4[DC_PRED ]= pred4x4_dc_c;
2459 h->pred4x4[DIAG_DOWN_LEFT_PRED ]= pred4x4_down_left_c;
2460 h->pred4x4[DIAG_DOWN_RIGHT_PRED]= pred4x4_down_right_c;
2461 h->pred4x4[VERT_RIGHT_PRED ]= pred4x4_vertical_right_c;
2462 h->pred4x4[HOR_DOWN_PRED ]= pred4x4_horizontal_down_c;
2463 h->pred4x4[VERT_LEFT_PRED ]= pred4x4_vertical_left_c;
2464 h->pred4x4[HOR_UP_PRED ]= pred4x4_horizontal_up_c;
2465 h->pred4x4[LEFT_DC_PRED ]= pred4x4_left_dc_c;
2466 h->pred4x4[TOP_DC_PRED ]= pred4x4_top_dc_c;
2467 h->pred4x4[DC_128_PRED ]= pred4x4_128_dc_c;
2468
2469 h->pred8x8[DC_PRED8x8 ]= pred8x8_dc_c;
2470 h->pred8x8[VERT_PRED8x8 ]= pred8x8_vertical_c;
2471 h->pred8x8[HOR_PRED8x8 ]= pred8x8_horizontal_c;
2472 h->pred8x8[PLANE_PRED8x8 ]= pred8x8_plane_c;
2473 h->pred8x8[LEFT_DC_PRED8x8]= pred8x8_left_dc_c;
2474 h->pred8x8[TOP_DC_PRED8x8 ]= pred8x8_top_dc_c;
2475 h->pred8x8[DC_128_PRED8x8 ]= pred8x8_128_dc_c;
2476
2477 h->pred16x16[DC_PRED8x8 ]= pred16x16_dc_c;
2478 h->pred16x16[VERT_PRED8x8 ]= pred16x16_vertical_c;
2479 h->pred16x16[HOR_PRED8x8 ]= pred16x16_horizontal_c;
2480 h->pred16x16[PLANE_PRED8x8 ]= pred16x16_plane_c;
2481 h->pred16x16[LEFT_DC_PRED8x8]= pred16x16_left_dc_c;
2482 h->pred16x16[TOP_DC_PRED8x8 ]= pred16x16_top_dc_c;
2483 h->pred16x16[DC_128_PRED8x8 ]= pred16x16_128_dc_c;
2484}
2485
0da71265 2486static void free_tables(H264Context *h){
0da71265 2487 av_freep(&h->intra4x4_pred_mode);
e5017ab8
LA
2488 av_freep(&h->chroma_pred_mode_table);
2489 av_freep(&h->cbp_table);
9e528114
LA
2490 av_freep(&h->mvd_table[0]);
2491 av_freep(&h->mvd_table[1]);
5ad984c9 2492 av_freep(&h->direct_table);
0da71265
MN
2493 av_freep(&h->non_zero_count);
2494 av_freep(&h->slice_table_base);
53c05b1e 2495 av_freep(&h->top_border);
0da71265 2496 h->slice_table= NULL;
e5017ab8 2497
0da71265
MN
2498 av_freep(&h->mb2b_xy);
2499 av_freep(&h->mb2b8_xy);
9f2d1b4f
LM
2500
2501 av_freep(&h->s.obmc_scratchpad);
0da71265
MN
2502}
2503
2504/**
2505 * allocates tables.
2506 * needs widzh/height
2507 */
2508static int alloc_tables(H264Context *h){
2509 MpegEncContext * const s = &h->s;
7bc9090a 2510 const int big_mb_num= s->mb_stride * (s->mb_height+1);
0da71265
MN
2511 int x,y;
2512
2513 CHECKED_ALLOCZ(h->intra4x4_pred_mode, big_mb_num * 8 * sizeof(uint8_t))
e5017ab8 2514
53c05b1e 2515 CHECKED_ALLOCZ(h->non_zero_count , big_mb_num * 16 * sizeof(uint8_t))
0da71265 2516 CHECKED_ALLOCZ(h->slice_table_base , big_mb_num * sizeof(uint8_t))
53c05b1e 2517 CHECKED_ALLOCZ(h->top_border , s->mb_width * (16+8+8) * sizeof(uint8_t))
5d0e4cb8 2518 CHECKED_ALLOCZ(h->cbp_table, big_mb_num * sizeof(uint16_t))
0da71265 2519
e5017ab8
LA
2520 if( h->pps.cabac ) {
2521 CHECKED_ALLOCZ(h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t))
9e528114
LA
2522 CHECKED_ALLOCZ(h->mvd_table[0], 32*big_mb_num * sizeof(uint16_t));
2523 CHECKED_ALLOCZ(h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t));
5ad984c9 2524 CHECKED_ALLOCZ(h->direct_table, 32*big_mb_num * sizeof(uint8_t));
e5017ab8
LA
2525 }
2526
0da71265 2527 memset(h->slice_table_base, -1, big_mb_num * sizeof(uint8_t));
7bc9090a 2528 h->slice_table= h->slice_table_base + s->mb_stride + 1;
0da71265
MN
2529
2530 CHECKED_ALLOCZ(h->mb2b_xy , big_mb_num * sizeof(uint16_t));
2531 CHECKED_ALLOCZ(h->mb2b8_xy , big_mb_num * sizeof(uint16_t));
2532 for(y=0; y<s->mb_height; y++){
2533 for(x=0; x<s->mb_width; x++){
7bc9090a 2534 const int mb_xy= x + y*s->mb_stride;
0da71265
MN
2535 const int b_xy = 4*x + 4*y*h->b_stride;
2536 const int b8_xy= 2*x + 2*y*h->b8_stride;
2537
2538 h->mb2b_xy [mb_xy]= b_xy;
2539 h->mb2b8_xy[mb_xy]= b8_xy;
2540 }
2541 }
9f2d1b4f 2542
9c6221ae
GV
2543 s->obmc_scratchpad = NULL;
2544
0da71265
MN
2545 return 0;
2546fail:
2547 free_tables(h);
2548 return -1;
2549}
2550
2551static void common_init(H264Context *h){
2552 MpegEncContext * const s = &h->s;
0da71265
MN
2553
2554 s->width = s->avctx->width;
2555 s->height = s->avctx->height;
2556 s->codec_id= s->avctx->codec->id;
2557
2558 init_pred_ptrs(h);
2559
9a41c2c7 2560 s->unrestricted_mv=1;
0da71265
MN
2561 s->decode=1; //FIXME
2562}
2563
2564static int decode_init(AVCodecContext *avctx){
2565 H264Context *h= avctx->priv_data;
2566 MpegEncContext * const s = &h->s;
2567
3edcacde
MN
2568 MPV_decode_defaults(s);
2569
0da71265
MN
2570 s->avctx = avctx;
2571 common_init(h);
2572
2573 s->out_format = FMT_H264;
2574 s->workaround_bugs= avctx->workaround_bugs;
2575
2576 // set defaults
0da71265
MN
2577// s->decode_mb= ff_h263_decode_mb;
2578 s->low_delay= 1;
2579 avctx->pix_fmt= PIX_FMT_YUV420P;
2580
2581 decode_init_vlc(h);
2582
bf835aee 2583 if(avctx->codec_tag != 0x31637661 && avctx->codec_tag != 0x31435641) // avc1
4770b1b4
RT
2584 h->is_avc = 0;
2585 else {
2586 if((avctx->extradata_size == 0) || (avctx->extradata == NULL)) {
2587 av_log(avctx, AV_LOG_ERROR, "AVC codec requires avcC data\n");
2588 return -1;
2589 }
2590 h->is_avc = 1;
2591 h->got_avcC = 0;
2592 }
2593
0da71265
MN
2594 return 0;
2595}
2596
2597static void frame_start(H264Context *h){
2598 MpegEncContext * const s = &h->s;
2599 int i;
2600
2601 MPV_frame_start(s, s->avctx);
2602 ff_er_frame_start(s);
17bfbd70 2603 h->mmco_index=0;
0da71265
MN
2604
2605 assert(s->linesize && s->uvlinesize);
2606
2607 for(i=0; i<16; i++){
2608 h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
2609 h->chroma_subblock_offset[i]= 2*((scan8[i] - scan8[0])&7) + 2*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2610 }
2611 for(i=0; i<4; i++){
2612 h->block_offset[16+i]=
2613 h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2614 }
2615
934b0821
LM
2616 /* can't be in alloc_tables because linesize isn't known there.
2617 * FIXME: redo bipred weight to not require extra buffer? */
2618 if(!s->obmc_scratchpad)
2619 s->obmc_scratchpad = av_malloc(16*s->linesize + 2*8*s->uvlinesize);
2620
0da71265
MN
2621// s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
2622}
2623
53c05b1e
MN
2624static inline void backup_mb_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize){
2625 MpegEncContext * const s = &h->s;
2626 int i;
2627
2628 src_y -= linesize;
2629 src_cb -= uvlinesize;
2630 src_cr -= uvlinesize;
2631
2632 h->left_border[0]= h->top_border[s->mb_x][15];
2633 for(i=1; i<17; i++){
2634 h->left_border[i]= src_y[15+i* linesize];
2635 }
2636
2637 *(uint64_t*)(h->top_border[s->mb_x]+0)= *(uint64_t*)(src_y + 16*linesize);
2638 *(uint64_t*)(h->top_border[s->mb_x]+8)= *(uint64_t*)(src_y +8+16*linesize);
2639
2640 if(!(s->flags&CODEC_FLAG_GRAY)){
2641 h->left_border[17 ]= h->top_border[s->mb_x][16+7];
2642 h->left_border[17+9]= h->top_border[s->mb_x][24+7];
2643 for(i=1; i<9; i++){
2644 h->left_border[i+17 ]= src_cb[7+i*uvlinesize];
2645 h->left_border[i+17+9]= src_cr[7+i*uvlinesize];
2646 }
2647 *(uint64_t*)(h->top_border[s->mb_x]+16)= *(uint64_t*)(src_cb+8*uvlinesize);
2648 *(uint64_t*)(h->top_border[s->mb_x]+24)= *(uint64_t*)(src_cr+8*uvlinesize);
2649 }
2650}
2651
2652static inline void xchg_mb_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int xchg){
2653 MpegEncContext * const s = &h->s;
2654 int temp8, i;
2655 uint64_t temp64;
d89dc06a
LM
2656 int deblock_left = (s->mb_x > 0);
2657 int deblock_top = (s->mb_y > 0);
53c05b1e
MN
2658
2659 src_y -= linesize + 1;
2660 src_cb -= uvlinesize + 1;
2661 src_cr -= uvlinesize + 1;
2662
2663#define XCHG(a,b,t,xchg)\
2664t= a;\
2665if(xchg)\
2666 a= b;\
2667b= t;
d89dc06a
LM
2668
2669 if(deblock_left){
2670 for(i = !deblock_top; i<17; i++){
2671 XCHG(h->left_border[i ], src_y [i* linesize], temp8, xchg);
2672 }
2673 }
2674
2675 if(deblock_top){
2676 XCHG(*(uint64_t*)(h->top_border[s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg);
2677 XCHG(*(uint64_t*)(h->top_border[s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1);
53c05b1e 2678 }
53c05b1e
MN
2679
2680 if(!(s->flags&CODEC_FLAG_GRAY)){
d89dc06a
LM
2681 if(deblock_left){
2682 for(i = !deblock_top; i<9; i++){
2683 XCHG(h->left_border[i+17 ], src_cb[i*uvlinesize], temp8, xchg);
2684 XCHG(h->left_border[i+17+9], src_cr[i*uvlinesize], temp8, xchg);
2685 }
2686 }
2687 if(deblock_top){
2688 XCHG(*(uint64_t*)(h->top_border[s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1);
2689 XCHG(*(uint64_t*)(h->top_border[s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1);
53c05b1e 2690 }
53c05b1e
MN
2691 }
2692}
2693
0da71265
MN
2694static void hl_decode_mb(H264Context *h){
2695 MpegEncContext * const s = &h->s;
2696 const int mb_x= s->mb_x;
2697 const int mb_y= s->mb_y;
7bc9090a 2698 const int mb_xy= mb_x + mb_y*s->mb_stride;
0da71265
MN
2699 const int mb_type= s->current_picture.mb_type[mb_xy];
2700 uint8_t *dest_y, *dest_cb, *dest_cr;
2701 int linesize, uvlinesize /*dct_offset*/;
2702 int i;
2703
2704 if(!s->decode)
2705 return;
2706
2707 if(s->mb_skiped){
2708 }
2709
2710 dest_y = s->current_picture.data[0] + (mb_y * 16* s->linesize ) + mb_x * 16;
2711 dest_cb = s->current_picture.data[1] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2712 dest_cr = s->current_picture.data[2] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2713
2714 if (h->mb_field_decoding_flag) {
2715 linesize = s->linesize * 2;
2716 uvlinesize = s->uvlinesize * 2;
2717 if(mb_y&1){ //FIXME move out of this func?
2718 dest_y -= s->linesize*15;
2719 dest_cb-= s->linesize*7;
2720 dest_cr-= s->linesize*7;
2721 }
2722 } else {
2723 linesize = s->linesize;
2724 uvlinesize = s->uvlinesize;
2725// dct_offset = s->linesize * 16;
2726 }
2727
2728 if(IS_INTRA(mb_type)){
53c05b1e
MN
2729 if(h->deblocking_filter)
2730 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1);
2731
0da71265
MN
2732 if(!(s->flags&CODEC_FLAG_GRAY)){
2733 h->pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
2734 h->pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
2735 }
2736
2737 if(IS_INTRA4x4(mb_type)){
2738 if(!s->encoding){
2739 for(i=0; i<16; i++){
2740 uint8_t * const ptr= dest_y + h->block_offset[i];
a9799653 2741 uint8_t *topright;
0da71265
MN
2742 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2743 int tr;
2744
a9799653
MN
2745 if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
2746 const int topright_avail= (h->topright_samples_available<<i)&0x8000;
2747 assert(mb_y || linesize <= h->block_offset[i]);
2748 if(!topright_avail){
2749 tr= ptr[3 - linesize]*0x01010101;
2750 topright= (uint8_t*) &tr;
2751 }else if(i==5 && h->deblocking_filter){
2752 tr= *(uint32_t*)h->top_border[mb_x+1];
2753 topright= (uint8_t*) &tr;
2754 }else
2755 topright= ptr + 4 - linesize;
2756 }else
2757 topright= NULL;
0da71265
MN
2758
2759 h->pred4x4[ dir ](ptr, topright, linesize);
8b82a956
MN
2760 if(h->non_zero_count_cache[ scan8[i] ]){
2761 if(s->codec_id == CODEC_ID_H264)
0fa8158d 2762 s->dsp.h264_idct_add(ptr, h->mb + i*16, linesize);
8b82a956
MN
2763 else
2764 svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
2765 }
0da71265
MN
2766 }
2767 }
2768 }else{
2769 h->pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
8b82a956
MN
2770 if(s->codec_id == CODEC_ID_H264)
2771 h264_luma_dc_dequant_idct_c(h->mb, s->qscale);
2772 else
2773 svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
0da71265 2774 }
53c05b1e
MN
2775 if(h->deblocking_filter)
2776 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0);
8b82a956 2777 }else if(s->codec_id == CODEC_ID_H264){
0da71265
MN
2778 hl_motion(h, dest_y, dest_cb, dest_cr,
2779 s->dsp.put_h264_qpel_pixels_tab, s->dsp.put_h264_chroma_pixels_tab,
9f2d1b4f
LM
2780 s->dsp.avg_h264_qpel_pixels_tab, s->dsp.avg_h264_chroma_pixels_tab,
2781 s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab);
0da71265
MN
2782 }
2783
2784
2785 if(!IS_INTRA4x4(mb_type)){
4704097a
MN
2786 if(s->codec_id == CODEC_ID_H264){
2787 for(i=0; i<16; i++){
2788 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
2789 uint8_t * const ptr= dest_y + h->block_offset[i];
0fa8158d 2790 s->dsp.h264_idct_add(ptr, h->mb + i*16, linesize);
4704097a
MN
2791 }
2792 }
2793 }else{
2794 for(i=0; i<16; i++){
2795 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
2796 uint8_t * const ptr= dest_y + h->block_offset[i];
8b82a956 2797 svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
4704097a 2798 }
0da71265
MN
2799 }
2800 }
2801 }
2802
2803 if(!(s->flags&CODEC_FLAG_GRAY)){
2804 chroma_dc_dequant_idct_c(h->mb + 16*16, h->chroma_qp);
2805 chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp);
4704097a
MN
2806 if(s->codec_id == CODEC_ID_H264){
2807 for(i=16; i<16+4; i++){
2808 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2809 uint8_t * const ptr= dest_cb + h->block_offset[i];
0fa8158d 2810 s->dsp.h264_idct_add(ptr, h->mb + i*16, uvlinesize);
4704097a 2811 }
0da71265 2812 }
4704097a
MN
2813 for(i=20; i<20+4; i++){
2814 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2815 uint8_t * const ptr= dest_cr + h->block_offset[i];
0fa8158d 2816 s->dsp.h264_idct_add(ptr, h->mb + i*16, uvlinesize);
4704097a
MN
2817 }
2818 }
2819 }else{
2820 for(i=16; i<16+4; i++){
2821 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2822 uint8_t * const ptr= dest_cb + h->block_offset[i];
8b82a956 2823 svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
4704097a
MN
2824 }
2825 }
2826 for(i=20; i<20+4; i++){
2827 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2828 uint8_t * const ptr= dest_cr + h->block_offset[i];
2829 svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
2830 }
0da71265
MN
2831 }
2832 }
2833 }
53c05b1e
MN
2834 if(h->deblocking_filter) {
2835 backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2836 filter_mb(h, mb_x, mb_y, dest_y, dest_cb, dest_cr);
2837 }
0da71265
MN
2838}
2839
0da71265
MN
2840/**
2841 * fills the default_ref_list.
2842 */
2843static int fill_default_ref_list(H264Context *h){
2844 MpegEncContext * const s = &h->s;
2845 int i;
2846 Picture sorted_short_ref[16];
2847
2848 if(h->slice_type==B_TYPE){
2849 int out_i;
2850 int limit= -1;
2851
2852 for(out_i=0; out_i<h->short_ref_count; out_i++){
2853 int best_i=-1;
792bb815 2854 int best_poc=INT_MAX;
0da71265
MN
2855
2856 for(i=0; i<h->short_ref_count; i++){
2857 const int poc= h->short_ref[i]->poc;
2858 if(poc > limit && poc < best_poc){
2859 best_poc= poc;
2860 best_i= i;
2861 }
2862 }
2863
2864 assert(best_i != -1);
2865
2866 limit= best_poc;
2867 sorted_short_ref[out_i]= *h->short_ref[best_i];
2868 }
2869 }
2870
2871 if(s->picture_structure == PICT_FRAME){
2872 if(h->slice_type==B_TYPE){
2873 const int current_poc= s->current_picture_ptr->poc;
2874 int list;
2875
2876 for(list=0; list<2; list++){
2877 int index=0;
2878
2879 for(i=0; i<h->short_ref_count && index < h->ref_count[list]; i++){
5ad984c9 2880 const int i2= list ? i : h->short_ref_count - i - 1;
0da71265
MN
2881 const int poc= sorted_short_ref[i2].poc;
2882
2883 if(sorted_short_ref[i2].reference != 3) continue; //FIXME refernce field shit
2884
2885 if((list==1 && poc > current_poc) || (list==0 && poc < current_poc)){
2886 h->default_ref_list[list][index ]= sorted_short_ref[i2];
2887 h->default_ref_list[list][index++].pic_id= sorted_short_ref[i2].frame_num;
2888 }
2889 }
2890
2891 for(i=0; i<h->long_ref_count && index < h->ref_count[ list ]; i++){
2892 if(h->long_ref[i]->reference != 3) continue;
2893
2894 h->default_ref_list[ list ][index ]= *h->long_ref[i];
2895 h->default_ref_list[ list ][index++].pic_id= i;;
2896 }
2897
2898 if(h->long_ref_count > 1 && h->short_ref_count==0){
2899 Picture temp= h->default_ref_list[1][0];
2900 h->default_ref_list[1][0] = h->default_ref_list[1][1];
2901 h->default_ref_list[1][0] = temp;
2902 }
2903
2904 if(index < h->ref_count[ list ])
2905 memset(&h->default_ref_list[list][index], 0, sizeof(Picture)*(h->ref_count[ list ] - index));
2906 }
2907 }else{
2908 int index=0;
2909 for(i=0; i<h->short_ref_count && index < h->ref_count[0]; i++){
2910 if(h->short_ref[i]->reference != 3) continue; //FIXME refernce field shit
2911 h->default_ref_list[0][index ]= *h->short_ref[i];
2912 h->default_ref_list[0][index++].pic_id= h->short_ref[i]->frame_num;
2913 }
2914 for(i=0; i<h->long_ref_count && index < h->ref_count[0]; i++){
2915 if(h->long_ref[i]->reference != 3) continue;
2916 h->default_ref_list[0][index ]= *h->long_ref[i];
2917 h->default_ref_list[0][index++].pic_id= i;;
2918 }
2919 if(index < h->ref_count[0])
2920 memset(&h->default_ref_list[0][index], 0, sizeof(Picture)*(h->ref_count[0] - index));
2921 }
2922 }else{ //FIELD
2923 if(h->slice_type==B_TYPE){
2924 }else{
2925 //FIXME second field balh
2926 }
2927 }
2928 return 0;
2929}
2930
2931static int decode_ref_pic_list_reordering(H264Context *h){
2932 MpegEncContext * const s = &h->s;
2933 int list;
2934
2935 if(h->slice_type==I_TYPE || h->slice_type==SI_TYPE) return 0; //FIXME move beofre func
2936
2937 for(list=0; list<2; list++){
2938 memcpy(h->ref_list[list], h->default_ref_list[list], sizeof(Picture)*h->ref_count[list]);
2939
2940 if(get_bits1(&s->gb)){
2941 int pred= h->curr_pic_num;
2942 int index;
2943
2944 for(index=0; ; index++){
2945 int reordering_of_pic_nums_idc= get_ue_golomb(&s->gb);
2946 int pic_id;
2947 int i;
2948
0bc42cad
LM
2949 if(reordering_of_pic_nums_idc==3)
2950 break;
0da71265
MN
2951
2952 if(index >= h->ref_count[list]){
9b879566 2953 av_log(h->s.avctx, AV_LOG_ERROR, "reference count overflow\n");
0da71265
MN
2954 return -1;
2955 }
2956
2957 if(reordering_of_pic_nums_idc<3){
2958 if(reordering_of_pic_nums_idc<2){
2959 const int abs_diff_pic_num= get_ue_golomb(&s->gb) + 1;
2960
2961 if(abs_diff_pic_num >= h->max_pic_num){
9b879566 2962 av_log(h->s.avctx, AV_LOG_ERROR, "abs_diff_pic_num overflow\n");
0da71265
MN
2963 return -1;
2964 }
2965
2966 if(reordering_of_pic_nums_idc == 0) pred-= abs_diff_pic_num;
2967 else pred+= abs_diff_pic_num;
2968 pred &= h->max_pic_num - 1;
2969
2970 for(i= h->ref_count[list]-1; i>=index; i--){
2971 if(h->ref_list[list][i].pic_id == pred && h->ref_list[list][i].long_ref==0)
2972 break;
2973 }
2974 }else{
2975 pic_id= get_ue_golomb(&s->gb); //long_term_pic_idx
2976
2977 for(i= h->ref_count[list]-1; i>=index; i--){
2978 if(h->ref_list[list][i].pic_id == pic_id && h->ref_list[list][i].long_ref==1)
2979 break;
2980 }
2981 }
2982
2983 if(i < index){
9b879566 2984 av_log(h->s.avctx, AV_LOG_ERROR, "reference picture missing during reorder\n");
0da71265
MN
2985 memset(&h->ref_list[list][index], 0, sizeof(Picture)); //FIXME
2986 }else if(i > index){
2987 Picture tmp= h->ref_list[list][i];
2988 for(; i>index; i--){
2989 h->ref_list[list][i]= h->ref_list[list][i-1];
2990 }
2991 h->ref_list[list][index]= tmp;
2992 }
0bc42cad 2993 }else{
9b879566 2994 av_log(h->s.avctx, AV_LOG_ERROR, "illegal reordering_of_pic_nums_idc\n");
0da71265
MN
2995 return -1;
2996 }
2997 }
2998 }
2999
3000 if(h->slice_type!=B_TYPE) break;
3001 }
5ad984c9
LM
3002
3003 if(h->slice_type==B_TYPE && !h->direct_spatial_mv_pred)
3004 direct_dist_scale_factor(h);
0da71265
MN
3005 return 0;
3006}
3007
3008static int pred_weight_table(H264Context *h){
3009 MpegEncContext * const s = &h->s;
3010 int list, i;
9f2d1b4f 3011 int luma_def, chroma_def;
0da71265 3012
9f2d1b4f
LM
3013 h->use_weight= 0;
3014 h->use_weight_chroma= 0;
0da71265
MN
3015 h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
3016 h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
9f2d1b4f
LM
3017 luma_def = 1<<h->luma_log2_weight_denom;
3018 chroma_def = 1<<h->chroma_log2_weight_denom;
0da71265
MN
3019
3020 for(list=0; list<2; list++){
3021 for(i=0; i<h->ref_count[list]; i++){
3022 int luma_weight_flag, chroma_weight_flag;
3023
3024 luma_weight_flag= get_bits1(&s->gb);
3025 if(luma_weight_flag){
3026 h->luma_weight[list][i]= get_se_golomb(&s->gb);
3027 h->luma_offset[list][i]= get_se_golomb(&s->gb);
9f2d1b4f
LM
3028 if( h->luma_weight[list][i] != luma_def
3029 || h->luma_offset[list][i] != 0)
3030 h->use_weight= 1;
3031 }else{
3032 h->luma_weight[list][i]= luma_def;
3033 h->luma_offset[list][i]= 0;
0da71265
MN
3034 }
3035
3036 chroma_weight_flag= get_bits1(&s->gb);
3037 if(chroma_weight_flag){
3038 int j;
3039 for(j=0; j<2; j++){
3040 h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
3041 h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
9f2d1b4f
LM
3042 if( h->chroma_weight[list][i][j] != chroma_def
3043 || h->chroma_offset[list][i][j] != 0)
3044 h->use_weight_chroma= 1;
3045 }
3046 }else{
3047 int j;
3048 for(j=0; j<2; j++){
3049 h->chroma_weight[list][i][j]= chroma_def;
3050 h->chroma_offset[list][i][j]= 0;
0da71265
MN
3051 }
3052 }
3053 }
3054 if(h->slice_type != B_TYPE) break;
3055 }
9f2d1b4f 3056 h->use_weight= h->use_weight || h->use_weight_chroma;
0da71265
MN
3057 return 0;
3058}
3059
9f2d1b4f
LM
3060static void implicit_weight_table(H264Context *h){
3061 MpegEncContext * const s = &h->s;
3062 int list, i;
3063 int ref0, ref1;
3064 int cur_poc = s->current_picture_ptr->poc;
3065
3066 if( h->ref_count[0] == 1 && h->ref_count[1] == 1
3067 && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
3068 h->use_weight= 0;
3069 h->use_weight_chroma= 0;
3070 return;
3071 }
3072
3073 h->use_weight= 2;
3074 h->use_weight_chroma= 2;
3075 h->luma_log2_weight_denom= 5;
3076 h->chroma_log2_weight_denom= 5;
3077
3078 /* FIXME: MBAFF */
3079 for(ref0=0; ref0 < h->ref_count[0]; ref0++){
3080 int poc0 = h->ref_list[0][ref0].poc;
3081 for(ref1=0; ref1 < h->ref_count[1]; ref1++){
3082 int poc1 = h->ref_list[0][ref1].poc;
3083 int td = clip(poc1 - poc0, -128, 127);
3084 if(td){
3085 int tb = clip(cur_poc - poc0, -128, 127);
3086 int tx = (16384 + (ABS(td) >> 1)) / td;
3087 int dist_scale_factor = clip((tb*tx + 32) >> 6, -1024, 1023) >> 2;
3088 if(dist_scale_factor < -64 || dist_scale_factor > 128)
3089 h->implicit_weight[ref0][ref1] = 32;
3090 else
3091 h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor;
3092 }else
3093 h->implicit_weight[ref0][ref1] = 32;
3094 }
3095 }
3096}
3097
0da71265 3098/**
5175b937 3099 * instantaneous decoder refresh.
0da71265
MN
3100 */
3101static void idr(H264Context *h){
a4dae92b
LM
3102 int i,j;
3103
3104#define CHECK_DELAY(pic) \
3105 for(j = 0; h->delayed_pic[j]; j++) \
3106 if(pic == h->delayed_pic[j]){ \
3107 pic->reference=1; \
3108 break; \
3109 }
0da71265
MN
3110
3111 for(i=0; i<h->long_ref_count; i++){
3112 h->long_ref[i]->reference=0;
a4dae92b 3113 CHECK_DELAY(h->long_ref[i]);
0da71265
MN
3114 h->long_ref[i]= NULL;
3115 }
3116 h->long_ref_count=0;
3117
3118 for(i=0; i<h->short_ref_count; i++){
3119 h->short_ref[i]->reference=0;
a4dae92b 3120 CHECK_DELAY(h->short_ref[i]);
0da71265
MN
3121 h->short_ref[i]= NULL;
3122 }
3123 h->short_ref_count=0;
3124}
a4dae92b 3125#undef CHECK_DELAY
0da71265 3126
0da71265
MN
3127/**
3128 *
3129 * @return the removed picture or NULL if an error occures
3130 */
3131static Picture * remove_short(H264Context *h, int frame_num){
1924f3ce 3132 MpegEncContext * const s = &h->s;
0da71265
MN
3133 int i;
3134
1924f3ce 3135 if(s->avctx->debug&FF_DEBUG_MMCO)
9b879566 3136 av_log(h->s.avctx, AV_LOG_DEBUG, "remove short %d count %d\n", frame_num, h->short_ref_count);
1924f3ce 3137
0da71265
MN
3138 for(i=0; i<h->short_ref_count; i++){
3139 Picture *pic= h->short_ref[i];
1924f3ce 3140 if(s->avctx->debug&FF_DEBUG_MMCO)
9b879566 3141 av_log(h->s.avctx, AV_LOG_DEBUG, "%d %d %p\n", i, pic->frame_num, pic);
0da71265
MN
3142 if(pic->frame_num == frame_num){
3143 h->short_ref[i]= NULL;
3144 memmove(&h->short_ref[i], &h->short_ref[i+1], (h->short_ref_count - i - 1)*sizeof(Picture*));
3145 h->short_ref_count--;
3146 return pic;
3147 }
3148 }
3149 return NULL;
3150}
3151
3152/**
3153 *
3154 * @return the removed picture or NULL if an error occures
3155 */
3156static Picture * remove_long(H264Context *h, int i){
3157 Picture *pic;
3158
3159 if(i >= h->long_ref_count) return NULL;
3160 pic= h->long_ref[i];
3161 if(pic==NULL) return NULL;
3162
3163 h->long_ref[i]= NULL;
3164 memmove(&h->long_ref[i], &h->long_ref[i+1], (h->long_ref_count - i - 1)*sizeof(Picture*));
3165 h->long_ref_count--;
3166
3167 return pic;
3168}
3169
3170/**
3171 * Executes the reference picture marking (memory management control operations).
3172 */
3173static int execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){
3174 MpegEncContext * const s = &h->s;
3175 int i;
3176 int current_is_long=0;
3177 Picture *pic;
3178
3179 if((s->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0)
9b879566 3180 av_log(h->s.avctx, AV_LOG_DEBUG, "no mmco here\n");
0da71265
MN
3181
3182 for(i=0; i<mmco_count; i++){
3183 if(s->avctx->debug&FF_DEBUG_MMCO)
9b879566 3184 av_log(h->s.avctx, AV_LOG_DEBUG, "mmco:%d %d %d\n", h->mmco[i].opcode, h->mmco[i].short_frame_num, h->mmco[i].long_index);
0da71265
MN
3185
3186 switch(mmco[i].opcode){
3187 case MMCO_SHORT2UNUSED:
3188 pic= remove_short(h, mmco[i].short_frame_num);
3189 if(pic==NULL) return -1;
3190 pic->reference= 0;
3191 break;
3192 case MMCO_SHORT2LONG:
3193 pic= remove_long(h, mmco[i].long_index);
3194 if(pic) pic->reference=0;
3195
3196 h->long_ref[ mmco[i].long_index ]= remove_short(h, mmco[i].short_frame_num);
3197 h->long_ref[ mmco[i].long_index ]->long_ref=1;
3198 break;
3199 case MMCO_LONG2UNUSED:
3200 pic= remove_long(h, mmco[i].long_index);
3201 if(pic==NULL) return -1;
3202 pic->reference= 0;
3203 break;
3204 case MMCO_LONG:
3205 pic= remove_long(h, mmco[i].long_index);
3206 if(pic) pic->reference=0;
3207
3208 h->long_ref[ mmco[i].long_index ]= s->current_picture_ptr;
3209 h->long_ref[ mmco[i].long_index ]->long_ref=1;
3210 h->long_ref_count++;
3211
3212 current_is_long=1;
3213 break;
3214 case MMCO_SET_MAX_LONG:
3215 assert(mmco[i].long_index <= 16);
3216 while(mmco[i].long_index < h->long_ref_count){
3217 pic= remove_long(h, mmco[i].long_index);
3218 pic->reference=0;
3219 }
3220 while(mmco[i].long_index > h->long_ref_count){
3221 h->long_ref[ h->long_ref_count++ ]= NULL;
3222 }
3223 break;
3224 case MMCO_RESET:
3225 while(h->short_ref_count){
3226 pic= remove_short(h, h->short_ref[0]->frame_num);
3227 pic->reference=0;
3228 }
3229 while(h->long_ref_count){
3230 pic= remove_long(h, h->long_ref_count-1);
3231 pic->reference=0;
3232 }
3233 break;
3234 default: assert(0);
3235 }
3236 }
3237
3238 if(!current_is_long){
3239 pic= remove_short(h, s->current_picture_ptr->frame_num);
3240 if(pic){
3241 pic->reference=0;
9b879566 3242 av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term buffer state detected\n");
0da71265
MN
3243 }
3244
3245 if(h->short_ref_count)
1924f3ce
MN
3246 memmove(&h->short_ref[1], &h->short_ref[0], h->short_ref_count*sizeof(Picture*));
3247
3248 h->short_ref[0]= s->current_picture_ptr;
0da71265
MN
3249 h->short_ref[0]->long_ref=0;
3250 h->short_ref_count++;
3251 }
3252
3253 return 0;
3254}
3255
3256static int decode_ref_pic_marking(H264Context *h){
3257 MpegEncContext * const s = &h->s;
3258 int i;
3259
3260 if(h->nal_unit_type == NAL_IDR_SLICE){ //FIXME fields
3261 s->broken_link= get_bits1(&s->gb) -1;
3262 h->mmco[0].long_index= get_bits1(&s->gb) - 1; // current_long_term_idx
3263 if(h->mmco[0].long_index == -1)
3264 h->mmco_index= 0;
3265 else{
3266 h->mmco[0].opcode= MMCO_LONG;
3267 h->mmco_index= 1;
3268 }
3269 }else{
3270 if(get_bits1(&s->gb)){ // adaptive_ref_pic_marking_mode_flag
579448a0 3271 for(i= 0; i<MAX_MMCO_COUNT; i++) {
0da71265
MN
3272 MMCOOpcode opcode= get_ue_golomb(&s->gb);;
3273
3274 h->mmco[i].opcode= opcode;
3275 if(opcode==MMCO_SHORT2UNUSED || opcode==MMCO_SHORT2LONG){
3276 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
3277/* if(h->mmco[i].short_frame_num >= h->short_ref_count || h->short_ref[ h->mmco[i].short_frame_num ] == NULL){
3278 fprintf(stderr, "illegal short ref in memory management control operation %d\n", mmco);
3279 return -1;
3280 }*/
3281 }
3282 if(opcode==MMCO_SHORT2LONG || opcode==MMCO_LONG2UNUSED || opcode==MMCO_LONG || opcode==MMCO_SET_MAX_LONG){
3283 h->mmco[i].long_index= get_ue_golomb(&s->gb);
3284 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){
9b879566 3285 av_log(h->s.avctx, AV_LOG_ERROR, "illegal long ref in memory management control operation %d\n", opcode);
0da71265
MN
3286 return -1;
3287 }
3288 }
3289
3290 if(opcode > MMCO_LONG){
9b879566 3291 av_log(h->s.avctx, AV_LOG_ERROR, "illegal memory management control operation %d\n", opcode);
0da71265
MN
3292 return -1;
3293 }
792bb815
MN
3294 if(opcode == MMCO_END)
3295 break;
0da71265
MN
3296 }
3297 h->mmco_index= i;
3298 }else{
3299 assert(h->long_ref_count + h->short_ref_count <= h->sps.ref_frame_count);
3300
3301 if(h->long_ref_count + h->short_ref_count == h->sps.ref_frame_count){ //FIXME fields
3302 h->mmco[0].opcode= MMCO_SHORT2UNUSED;
3303 h->mmco[0].short_frame_num= h->short_ref[ h->short_ref_count - 1 ]->frame_num;
3304 h->mmco_index= 1;
3305 }else
3306 h->mmco_index= 0;
3307 }
3308 }
3309
3310 return 0;
3311}
3312
3313static int init_poc(H264Context *h){
3314 MpegEncContext * const s = &h->s;
3315 const int max_frame_num= 1<<h->sps.log2_max_frame_num;
3316 int field_poc[2];
3317
3318 if(h->nal_unit_type == NAL_IDR_SLICE){
3319 h->frame_num_offset= 0;
3320 }else{
3321 if(h->frame_num < h->prev_frame_num)
3322 h->frame_num_offset= h->prev_frame_num_offset + max_frame_num;
3323 else
3324 h->frame_num_offset= h->prev_frame_num_offset;
3325 }
3326
3327 if(h->sps.poc_type==0){
3328 const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
3329
3330 if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
3331 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
3332 else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
3333 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
3334 else
3335 h->poc_msb = h->prev_poc_msb;
3336//printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
3337 field_poc[0] =
3338 field_poc[1] = h->poc_msb + h->poc_lsb;
3339 if(s->picture_structure == PICT_FRAME)
3340 field_poc[1] += h->delta_poc_bottom;
3341 }else if(h->sps.poc_type==1){
3342 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
3343 int i;
3344
3345 if(h->sps.poc_cycle_length != 0)
3346 abs_frame_num = h->frame_num_offset + h->frame_num;
3347 else
3348 abs_frame_num = 0;
3349
3350 if(h->nal_ref_idc==0 && abs_frame_num > 0)
3351 abs_frame_num--;
3352
3353 expected_delta_per_poc_cycle = 0;
3354 for(i=0; i < h->sps.poc_cycle_length; i++)
3355 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
3356
3357 if(abs_frame_num > 0){
3358 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
3359 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
3360
3361 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
3362 for(i = 0; i <= frame_num_in_poc_cycle; i++)
3363 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
3364 } else
3365 expectedpoc = 0;
3366
3367 if(h->nal_ref_idc == 0)
3368 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
3369
3370 field_poc[0] = expectedpoc + h->delta_poc[0];
3371 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
3372
3373 if(s->picture_structure == PICT_FRAME)
3374 field_poc[1] += h->delta_poc[1];
3375 }else{
3376 int poc;
3377 if(h->nal_unit_type == NAL_IDR_SLICE){
3378 poc= 0;
3379 }else{
3380 if(h->nal_ref_idc) poc= 2*(h->frame_num_offset + h->frame_num);
3381 else poc= 2*(h->frame_num_offset + h->frame_num) - 1;
3382 }
3383 field_poc[0]= poc;
3384 field_poc[1]= poc;
3385 }
3386
3387 if(s->picture_structure != PICT_BOTTOM_FIELD)
3388 s->current_picture_ptr->field_poc[0]= field_poc[0];
3389 if(s->picture_structure != PICT_TOP_FIELD)
3390 s->current_picture_ptr->field_poc[1]= field_poc[1];
3391 if(s->picture_structure == PICT_FRAME) // FIXME field pix?
3392 s->current_picture_ptr->poc= FFMIN(field_poc[0], field_poc[1]);
3393
3394 return 0;
3395}
3396
3397/**
3398 * decodes a slice header.
3399 * this will allso call MPV_common_init() and frame_start() as needed
3400 */
3401static int decode_slice_header(H264Context *h){
3402 MpegEncContext * const s = &h->s;
3403 int first_mb_in_slice, pps_id;
3404 int num_ref_idx_active_override_flag;
3405 static const uint8_t slice_type_map[5]= {P_TYPE, B_TYPE, I_TYPE, SP_TYPE, SI_TYPE};
0da71265
MN
3406
3407 s->current_picture.reference= h->nal_ref_idc != 0;
3408
3409 first_mb_in_slice= get_ue_golomb(&s->gb);
3410
3411 h->slice_type= get_ue_golomb(&s->gb);
3412 if(h->slice_type > 9){
9b879566 3413 av_log(h->s.avctx, AV_LOG_ERROR, "slice type too large (%d) at %d %d\n", h->slice_type, s->mb_x, s->mb_y);
5175b937 3414 return -1;
0da71265
MN
3415 }
3416 if(h->slice_type > 4){
3417 h->slice_type -= 5;
3418 h->slice_type_fixed=1;
3419 }else
3420 h->slice_type_fixed=0;
3421
3422 h->slice_type= slice_type_map[ h->slice_type ];
3423
3424 s->pict_type= h->slice_type; // to make a few old func happy, its wrong though
3425
3426 pps_id= get_ue_golomb(&s->gb);
3427 if(pps_id>255){
9b879566 3428 av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
0da71265
MN
3429 return -1;
3430 }
3431 h->pps= h->pps_buffer[pps_id];
8b92b792 3432 if(h->pps.slice_group_count == 0){
9b879566 3433 av_log(h->s.avctx, AV_LOG_ERROR, "non existing PPS referenced\n");
8b92b792
MN
3434 return -1;
3435 }
3436
0da71265 3437 h->sps= h->sps_buffer[ h->pps.sps_id ];
8b92b792 3438 if(h->sps.log2_max_frame_num == 0){
9b879566 3439 av_log(h->s.avctx, AV_LOG_ERROR, "non existing SPS referenced\n");
8b92b792
MN
3440 return -1;
3441 }
0da71265
MN
3442
3443 s->mb_width= h->sps.mb_width;
3444 s->mb_height= h->sps.mb_height;
0da71265 3445
650cec0c
LM
3446 h->b_stride= s->mb_width*4 + 1;
3447 h->b8_stride= s->mb_width*2 + 1;
0da71265 3448
5175b937
LLL
3449 s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
3450 s->resync_mb_y = s->mb_y = first_mb_in_slice / s->mb_width; //FIXME AFFW
0da71265 3451
a15e68de 3452 s->width = 16*s->mb_width - 2*(h->sps.crop_left + h->sps.crop_right );
0da71265 3453 if(h->sps.frame_mbs_only_flag)
a15e68de 3454 s->height= 16*s->mb_height - 2*(h->sps.crop_top + h->sps.crop_bottom);
0da71265 3455 else
a15e68de 3456 s->height= 16*s->mb_height - 4*(h->sps.crop_top + h->sps.crop_bottom); //FIXME recheck
0da71265 3457
0da71265 3458 if (s->context_initialized
5ff85f1d 3459 && ( s->width != s->avctx->width || s->height != s->avctx->height)) {
0da71265
MN
3460 free_tables(h);
3461 MPV_common_end(s);
3462 }
3463 if (!s->context_initialized) {
3464 if (MPV_common_init(s) < 0)
3465 return -1;
3466
3467 alloc_tables(h);
3468
3469 s->avctx->width = s->width;
3470 s->avctx->height = s->height;
5ff85f1d 3471 s->avctx->sample_aspect_ratio= h->sps.sar;
eed4ebd2
MN
3472 if(!s->avctx->sample_aspect_ratio.den)
3473 s->avctx->sample_aspect_ratio.den = 1;
ec587a50
MR
3474
3475 if(h->sps.timing_info_present_flag && h->sps.fixed_frame_rate_flag){
3476 s->avctx->frame_rate = h->sps.time_scale;
3477 s->avctx->frame_rate_base = h->sps.num_units_in_tick;
3478 }
0da71265
MN
3479 }
3480
5175b937 3481 if(h->slice_num == 0){
0da71265
MN
3482 frame_start(h);
3483 }
3484
1924f3ce 3485 s->current_picture_ptr->frame_num= //FIXME frame_num cleanup
0da71265
MN
3486 h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
3487
3488 if(h->sps.frame_mbs_only_flag){
3489 s->picture_structure= PICT_FRAME;
3490 }else{
3491 if(get_bits1(&s->gb)) //field_pic_flag
3492 s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
3493 else
3494 s->picture_structure= PICT_FRAME;
3495 }
3496
3497 if(s->picture_structure==PICT_FRAME){
3498 h->curr_pic_num= h->frame_num;
3499 h->max_pic_num= 1<< h->sps.log2_max_frame_num;
3500 }else{
3501 h->curr_pic_num= 2*h->frame_num;
3502 h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
3503 }
3504
3505 if(h->nal_unit_type == NAL_IDR_SLICE){
1df1df0b 3506 get_ue_golomb(&s->gb); /* idr_pic_id */
0da71265
MN
3507 }
3508
3509 if(h->sps.poc_type==0){
3510 h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
3511
3512 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
3513 h->delta_poc_bottom= get_se_golomb(&s->gb);
3514 }
3515 }
3516
3517 if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
3518 h->delta_poc[0]= get_se_golomb(&s->gb);
3519
3520 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
3521 h->delta_poc[1]= get_se_golomb(&s->gb);
3522 }
3523
3524 init_poc(h);
3525
3526 if(h->pps.redundant_pic_cnt_present){
3527 h->redundant_pic_count= get_ue_golomb(&s->gb);
3528 }
3529
3530 //set defaults, might be overriden a few line later
3531 h->ref_count[0]= h->pps.ref_count[0];
3532 h->ref_count[1]= h->pps.ref_count[1];
3533
3534 if(h->slice_type == P_TYPE || h->slice_type == SP_TYPE || h->slice_type == B_TYPE){
3535 if(h->slice_type == B_TYPE){
3536 h->direct_spatial_mv_pred= get_bits1(&s->gb);
3537 }
3538 num_ref_idx_active_override_flag= get_bits1(&s->gb);
3539
3540 if(num_ref_idx_active_override_flag){
3541 h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
3542 if(h->slice_type==B_TYPE)
3543 h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
3544
3545 if(h->ref_count[0] > 32 || h->ref_count[1] > 32){
9b879566 3546 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
0da71265
MN
3547 return -1;
3548 }
3549 }
3550 }
3551
5175b937 3552 if(h->slice_num == 0){
0da71265
MN
3553 fill_default_ref_list(h);
3554 }
3555
3556 decode_ref_pic_list_reordering(h);
3557
3558 if( (h->pps.weighted_pred && (h->slice_type == P_TYPE || h->slice_type == SP_TYPE ))
3559 || (h->pps.weighted_bipred_idc==1 && h->slice_type==B_TYPE ) )
3560 pred_weight_table(h);
9f2d1b4f
LM
3561 else if(h->pps.weighted_bipred_idc==2 && h->slice_type==B_TYPE)
3562 implicit_weight_table(h);
3563 else
3564 h->use_weight = 0;
0da71265
MN
3565
3566 if(s->current_picture.reference)
3567 decode_ref_pic_marking(h);
0da71265 3568
e5017ab8
LA
3569 if( h->slice_type != I_TYPE && h->slice_type != SI_TYPE && h->pps.cabac )
3570 h->cabac_init_idc = get_ue_golomb(&s->gb);
3571
3572 h->last_qscale_diff = 0;
3573 s->qscale = h->pps.init_qp + get_se_golomb(&s->gb);
3ebc7e04
MN
3574 if(s->qscale<0 || s->qscale>51){
3575 av_log(s->avctx, AV_LOG_ERROR, "QP %d out of range\n", s->qscale);
3576 return -1;
3577 }
579448a0 3578 h->chroma_qp = get_chroma_qp(h, s->qscale);
0da71265
MN
3579 //FIXME qscale / qp ... stuff
3580 if(h->slice_type == SP_TYPE){
1df1df0b 3581 get_bits1(&s->gb); /* sp_for_switch_flag */
0da71265
MN
3582 }
3583 if(h->slice_type==SP_TYPE || h->slice_type == SI_TYPE){
1df1df0b 3584 get_se_golomb(&s->gb); /* slice_qs_delta */
0da71265
MN
3585 }
3586
53c05b1e 3587 h->deblocking_filter = 1;
3ebc7e04
MN
3588 h->slice_alpha_c0_offset = 0;
3589 h->slice_beta_offset = 0;
0da71265 3590 if( h->pps.deblocking_filter_parameters_present ) {
53c05b1e
MN
3591 h->deblocking_filter= get_ue_golomb(&s->gb);
3592 if(h->deblocking_filter < 2)
3593 h->deblocking_filter^= 1; // 1<->0
3594
3595 if( h->deblocking_filter ) {
980a82b7
MN
3596 h->slice_alpha_c0_offset = get_se_golomb(&s->gb) << 1;
3597 h->slice_beta_offset = get_se_golomb(&s->gb) << 1;
0da71265 3598 }
980a82b7 3599 }
0da71265
MN
3600
3601#if 0 //FMO
3602 if( h->pps.num_slice_groups > 1 && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
3603 slice_group_change_cycle= get_bits(&s->gb, ?);
3604#endif
3605
5175b937
LLL
3606 h->slice_num++;
3607
0da71265 3608 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
9f2d1b4f 3609 av_log(h->s.avctx, AV_LOG_DEBUG, "slice:%d mb:%d %c pps:%d frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d weight:%d%s\n",
5175b937 3610 h->slice_num, first_mb_in_slice,
d8085ea7 3611 av_get_pict_type_char(h->slice_type),
0da71265
MN
3612 pps_id, h->frame_num,
3613 s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
3614 h->ref_count[0], h->ref_count[1],
3615 s->qscale,
9f2d1b4f
LM
3616 h->deblocking_filter,
3617 h->use_weight,
3618 h->use_weight==1 && h->use_weight_chroma ? "c" : ""
0da71265
MN
3619 );
3620 }
3621
3622 return 0;
3623}
3624
3625/**
3626 *
3627 */
3628static inline int get_level_prefix(GetBitContext *gb){
3629 unsigned int buf;
3630 int log;
3631
3632 OPEN_READER(re, gb);
3633 UPDATE_CACHE(re, gb);
3634 buf=GET_CACHE(re, gb);
3635
3636 log= 32 - av_log2(buf);
3637#ifdef TRACE
3638 print_bin(buf>>(32-log), log);
0fa8158d 3639 av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d lpr @%5d in %s get_level_prefix\n", buf>>(32-log), log, log-1, get_bits_count(gb), __FILE__);
0da71265
MN
3640#endif
3641
3642 LAST_SKIP_BITS(re, gb, log);
3643 CLOSE_READER(re, gb);
3644
3645 return log-1;
3646}
3647
3648/**
3649 * decodes a residual block.
3650 * @param n block index
3651 * @param scantable scantable
3652 * @param max_coeff number of coefficients in the block
3653 * @return <0 if an error occured
3654 */
3655static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, int qp, int max_coeff){
3656 MpegEncContext * const s = &h->s;
3657 const uint16_t *qmul= dequant_coeff[qp];
3658 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};
3659 int level[16], run[16];
3660 int suffix_length, zeros_left, coeff_num, coeff_token, total_coeff, i, trailing_ones;
3661
3662 //FIXME put trailing_onex into the context
3663
3664 if(n == CHROMA_DC_BLOCK_INDEX){
3665 coeff_token= get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1);
3666 total_coeff= coeff_token>>2;
3667 }else{
3668 if(n == LUMA_DC_BLOCK_INDEX){
3669 total_coeff= pred_non_zero_count(h, 0);
3670 coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
3671 total_coeff= coeff_token>>2;
3672 }else{
3673 total_coeff= pred_non_zero_count(h, n);
3674 coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
3675 total_coeff= coeff_token>>2;
3676 h->non_zero_count_cache[ scan8[n] ]= total_coeff;
3677 }
3678 }
3679
3680 //FIXME set last_non_zero?
3681
3682 if(total_coeff==0)
3683 return 0;
3684
3685 trailing_ones= coeff_token&3;
95c26348 3686 tprintf("trailing:%d, total:%d\n", trailing_ones, total_coeff);
0da71265
MN
3687 assert(total_coeff<=16);
3688
3689 for(i=0; i<trailing_ones; i++){
3690 level[i]= 1 - 2*get_bits1(gb);
3691 }
3692
3693 suffix_length= total_coeff > 10 && trailing_ones < 3;
3694
3695 for(; i<total_coeff; i++){
3696 const int prefix= get_level_prefix(gb);
3697 int level_code, mask;
3698
3699 if(prefix<14){ //FIXME try to build a large unified VLC table for all this
3700 if(suffix_length)
3701 level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
3702 else
3703 level_code= (prefix<<suffix_length); //part
3704 }else if(prefix==14){
3705 if(suffix_length)
3706 level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
3707 else
3708 level_code= prefix + get_bits(gb, 4); //part
3709 }else if(prefix==15){
3710 level_code= (prefix<<suffix_length) + get_bits(gb, 12); //part
3711 if(suffix_length==0) level_code+=15; //FIXME doesnt make (much)sense
3712 }else{
9b879566 3713 av_log(h->s.avctx, AV_LOG_ERROR, "prefix too large at %d %d\n", s->mb_x, s->mb_y);
0da71265
MN
3714 return -1;
3715 }
3716
3717 if(i==trailing_ones && i<3) level_code+= 2; //FIXME split first iteration
3718
3719 mask= -(level_code&1);
3720 level[i]= (((2+level_code)>>1) ^ mask) - mask;
3721
3722 if(suffix_length==0) suffix_length=1; //FIXME split first iteration
3723
3724#if 1
3725 if(ABS(level[i]) > (3<<(suffix_length-1)) && suffix_length<6) suffix_length++;
3726#else
3727 if((2+level_code)>>1) > (3<<(suffix_length-1)) && suffix_length<6) suffix_length++;
980a82b7 3728 /* ? == prefix > 2 or sth */
0da71265 3729#endif
95c26348 3730 tprintf("level: %d suffix_length:%d\n", level[i], suffix_length);
0da71265
MN
3731 }
3732
3733 if(total_coeff == max_coeff)
3734 zeros_left=0;
3735 else{
3736 if(n == CHROMA_DC_BLOCK_INDEX)
3737 zeros_left= get_vlc2(gb, chroma_dc_total_zeros_vlc[ total_coeff-1 ].table, CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1);
3738 else
3739 zeros_left= get_vlc2(gb, total_zeros_vlc[ total_coeff-1 ].table, TOTAL_ZEROS_VLC_BITS, 1);
3740 }
3741
3742 for(i=0; i<total_coeff-1; i++){
3743 if(zeros_left <=0)
3744 break;
3745 else if(zeros_left < 7){
3746 run[i]= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
3747 }else{
3748 run[i]= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
3749 }
3750 zeros_left -= run[i];
3751 }