print "D" instead of "P" for dropable frames in flv with -debug 1
[libav.git] / libavcodec / h264.c
CommitLineData
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1/*
2 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4 *
5 * This 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
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34#include "cabac.h"
35
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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;
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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;
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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;
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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;
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85 int timing_info_present_flag;
86 uint32_t num_units_in_tick;
87 uint32_t time_scale;
88 int fixed_frame_rate_flag;
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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
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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
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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
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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;
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178 uint8_t (*top_border)[16+2*8];
179 uint8_t left_border[17+2*9];
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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];
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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
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207 int b8_stride;
208
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209 int halfpel_flag;
210 int thirdpel_flag;
211
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212 int unknown_svq3_flag;
213 int next_slice_index;
214
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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
258 int luma_log2_weight_denom;
259 int chroma_log2_weight_denom;
260 int luma_weight[2][16];
261 int luma_offset[2][16];
262 int chroma_weight[2][16][2];
263 int chroma_offset[2][16][2];
264
265 //deblock
53c05b1e 266 int deblocking_filter; ///< disable_deblocking_filter_idc with 1<->0
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267 int slice_alpha_c0_offset;
268 int slice_beta_offset;
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269
270 int redundant_pic_count;
271
272 int direct_spatial_mv_pred;
5ad984c9 273 int dist_scale_factor[16];
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274
275 /**
276 * num_ref_idx_l0/1_active_minus1 + 1
277 */
278 int ref_count[2];// FIXME split for AFF
279 Picture *short_ref[16];
280 Picture *long_ref[16];
281 Picture default_ref_list[2][32];
282 Picture ref_list[2][32]; //FIXME size?
283 Picture field_ref_list[2][32]; //FIXME size?
a4dae92b 284 Picture *delayed_pic[16]; //FIXME size?
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285
286 /**
287 * memory management control operations buffer.
288 */
289 MMCO mmco[MAX_MMCO_COUNT];
290 int mmco_index;
291
292 int long_ref_count; ///< number of actual long term references
293 int short_ref_count; ///< number of actual short term references
294
295 //data partitioning
296 GetBitContext intra_gb;
297 GetBitContext inter_gb;
298 GetBitContext *intra_gb_ptr;
299 GetBitContext *inter_gb_ptr;
300
301 DCTELEM mb[16*24] __align8;
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302
303 /**
304 * Cabac
305 */
306 CABACContext cabac;
307 uint8_t cabac_state[399];
308 int cabac_init_idc;
309
310 /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0,1,2), 0x0? luma_cbp */
311 uint16_t *cbp_table;
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312 int top_cbp;
313 int left_cbp;
693399ba 314 /* chroma_pred_mode for i4x4 or i16x16, else 0 */
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315 uint8_t *chroma_pred_mode_table;
316 int last_qscale_diff;
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317 int16_t (*mvd_table[2])[2];
318 int16_t mvd_cache[2][5*8][2];
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319 uint8_t *direct_table;
320 uint8_t direct_cache[5*8];
e5017ab8 321
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322}H264Context;
323
324static VLC coeff_token_vlc[4];
325static VLC chroma_dc_coeff_token_vlc;
326
327static VLC total_zeros_vlc[15];
328static VLC chroma_dc_total_zeros_vlc[3];
329
330static VLC run_vlc[6];
331static VLC run7_vlc;
332
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333static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp);
334static void svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp, int dc);
53c05b1e 335static void filter_mb( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr);
8b82a956 336
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337static inline uint32_t pack16to32(int a, int b){
338#ifdef WORDS_BIGENDIAN
339 return (b&0xFFFF) + (a<<16);
340#else
341 return (a&0xFFFF) + (b<<16);
342#endif
343}
344
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345/**
346 * fill a rectangle.
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347 * @param h height of the rectangle, should be a constant
348 * @param w width of the rectangle, should be a constant
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349 * @param size the size of val (1 or 4), should be a constant
350 */
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351static inline void fill_rectangle(void *vp, int w, int h, int stride, uint32_t val, int size){ //FIXME ensure this IS inlined
352 uint8_t *p= (uint8_t*)vp;
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353 assert(size==1 || size==4);
354
355 w *= size;
356 stride *= size;
357
358//FIXME check what gcc generates for 64 bit on x86 and possible write a 32 bit ver of it
359 if(w==2 && h==2){
360 *(uint16_t*)(p + 0)=
361 *(uint16_t*)(p + stride)= size==4 ? val : val*0x0101;
362 }else if(w==2 && h==4){
363 *(uint16_t*)(p + 0*stride)=
364 *(uint16_t*)(p + 1*stride)=
365 *(uint16_t*)(p + 2*stride)=
366 *(uint16_t*)(p + 3*stride)= size==4 ? val : val*0x0101;
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367 }else if(w==4 && h==1){
368 *(uint32_t*)(p + 0*stride)= size==4 ? val : val*0x01010101;
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369 }else if(w==4 && h==2){
370 *(uint32_t*)(p + 0*stride)=
371 *(uint32_t*)(p + 1*stride)= size==4 ? val : val*0x01010101;
372 }else if(w==4 && h==4){
373 *(uint32_t*)(p + 0*stride)=
374 *(uint32_t*)(p + 1*stride)=
375 *(uint32_t*)(p + 2*stride)=
376 *(uint32_t*)(p + 3*stride)= size==4 ? val : val*0x01010101;
377 }else if(w==8 && h==1){
378 *(uint32_t*)(p + 0)=
379 *(uint32_t*)(p + 4)= size==4 ? val : val*0x01010101;
380 }else if(w==8 && h==2){
381 *(uint32_t*)(p + 0 + 0*stride)=
382 *(uint32_t*)(p + 4 + 0*stride)=
383 *(uint32_t*)(p + 0 + 1*stride)=
384 *(uint32_t*)(p + 4 + 1*stride)= size==4 ? val : val*0x01010101;
385 }else if(w==8 && h==4){
386 *(uint64_t*)(p + 0*stride)=
387 *(uint64_t*)(p + 1*stride)=
388 *(uint64_t*)(p + 2*stride)=
389 *(uint64_t*)(p + 3*stride)= size==4 ? val*0x0100000001ULL : val*0x0101010101010101ULL;
390 }else if(w==16 && h==2){
391 *(uint64_t*)(p + 0+0*stride)=
392 *(uint64_t*)(p + 8+0*stride)=
393 *(uint64_t*)(p + 0+1*stride)=
394 *(uint64_t*)(p + 8+1*stride)= size==4 ? val*0x0100000001ULL : val*0x0101010101010101ULL;
395 }else if(w==16 && h==4){
396 *(uint64_t*)(p + 0+0*stride)=
397 *(uint64_t*)(p + 8+0*stride)=
398 *(uint64_t*)(p + 0+1*stride)=
399 *(uint64_t*)(p + 8+1*stride)=
400 *(uint64_t*)(p + 0+2*stride)=
401 *(uint64_t*)(p + 8+2*stride)=
402 *(uint64_t*)(p + 0+3*stride)=
403 *(uint64_t*)(p + 8+3*stride)= size==4 ? val*0x0100000001ULL : val*0x0101010101010101ULL;
404 }else
405 assert(0);
406}
407
408static inline void fill_caches(H264Context *h, int mb_type){
409 MpegEncContext * const s = &h->s;
7bc9090a 410 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
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411 int topleft_xy, top_xy, topright_xy, left_xy[2];
412 int topleft_type, top_type, topright_type, left_type[2];
413 int left_block[4];
414 int i;
415
416 //wow what a mess, why didnt they simplify the interlacing&intra stuff, i cant imagine that these complex rules are worth it
417
418 if(h->sps.mb_aff){
419 //FIXME
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420 topleft_xy = 0; /* avoid warning */
421 top_xy = 0; /* avoid warning */
422 topright_xy = 0; /* avoid warning */
0da71265 423 }else{
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424 topleft_xy = mb_xy-1 - s->mb_stride;
425 top_xy = mb_xy - s->mb_stride;
426 topright_xy= mb_xy+1 - s->mb_stride;
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427 left_xy[0] = mb_xy-1;
428 left_xy[1] = mb_xy-1;
429 left_block[0]= 0;
430 left_block[1]= 1;
431 left_block[2]= 2;
432 left_block[3]= 3;
433 }
434
435 topleft_type = h->slice_table[topleft_xy ] == h->slice_num ? s->current_picture.mb_type[topleft_xy] : 0;
436 top_type = h->slice_table[top_xy ] == h->slice_num ? s->current_picture.mb_type[top_xy] : 0;
437 topright_type= h->slice_table[topright_xy] == h->slice_num ? s->current_picture.mb_type[topright_xy]: 0;
438 left_type[0] = h->slice_table[left_xy[0] ] == h->slice_num ? s->current_picture.mb_type[left_xy[0]] : 0;
439 left_type[1] = h->slice_table[left_xy[1] ] == h->slice_num ? s->current_picture.mb_type[left_xy[1]] : 0;
440
441 if(IS_INTRA(mb_type)){
442 h->topleft_samples_available=
443 h->top_samples_available=
444 h->left_samples_available= 0xFFFF;
445 h->topright_samples_available= 0xEEEA;
446
447 if(!IS_INTRA(top_type) && (top_type==0 || h->pps.constrained_intra_pred)){
448 h->topleft_samples_available= 0xB3FF;
449 h->top_samples_available= 0x33FF;
450 h->topright_samples_available= 0x26EA;
451 }
452 for(i=0; i<2; i++){
453 if(!IS_INTRA(left_type[i]) && (left_type[i]==0 || h->pps.constrained_intra_pred)){
454 h->topleft_samples_available&= 0xDF5F;
455 h->left_samples_available&= 0x5F5F;
456 }
457 }
458
459 if(!IS_INTRA(topleft_type) && (topleft_type==0 || h->pps.constrained_intra_pred))
460 h->topleft_samples_available&= 0x7FFF;
461
462 if(!IS_INTRA(topright_type) && (topright_type==0 || h->pps.constrained_intra_pred))
463 h->topright_samples_available&= 0xFBFF;
464
465 if(IS_INTRA4x4(mb_type)){
466 if(IS_INTRA4x4(top_type)){
467 h->intra4x4_pred_mode_cache[4+8*0]= h->intra4x4_pred_mode[top_xy][4];
468 h->intra4x4_pred_mode_cache[5+8*0]= h->intra4x4_pred_mode[top_xy][5];
469 h->intra4x4_pred_mode_cache[6+8*0]= h->intra4x4_pred_mode[top_xy][6];
470 h->intra4x4_pred_mode_cache[7+8*0]= h->intra4x4_pred_mode[top_xy][3];
471 }else{
472 int pred;
473 if(IS_INTRA16x16(top_type) || (IS_INTER(top_type) && !h->pps.constrained_intra_pred))
474 pred= 2;
475 else{
476 pred= -1;
477 }
478 h->intra4x4_pred_mode_cache[4+8*0]=
479 h->intra4x4_pred_mode_cache[5+8*0]=
480 h->intra4x4_pred_mode_cache[6+8*0]=
481 h->intra4x4_pred_mode_cache[7+8*0]= pred;
482 }
483 for(i=0; i<2; i++){
484 if(IS_INTRA4x4(left_type[i])){
485 h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[0+2*i]];
486 h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[1+2*i]];
487 }else{
488 int pred;
489 if(IS_INTRA16x16(left_type[i]) || (IS_INTER(left_type[i]) && !h->pps.constrained_intra_pred))
490 pred= 2;
491 else{
492 pred= -1;
493 }
494 h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
495 h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= pred;
496 }
497 }
498 }
499 }
500
501
502/*
5030 . T T. T T T T
5041 L . .L . . . .
5052 L . .L . . . .
5063 . T TL . . . .
5074 L . .L . . . .
5085 L . .. . . . .
509*/
510//FIXME constraint_intra_pred & partitioning & nnz (lets hope this is just a typo in the spec)
511 if(top_type){
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512 h->non_zero_count_cache[4+8*0]= h->non_zero_count[top_xy][0];
513 h->non_zero_count_cache[5+8*0]= h->non_zero_count[top_xy][1];
514 h->non_zero_count_cache[6+8*0]= h->non_zero_count[top_xy][2];
515 h->non_zero_count_cache[7+8*0]= h->non_zero_count[top_xy][3];
0da71265 516
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517 h->non_zero_count_cache[1+8*0]= h->non_zero_count[top_xy][7];
518 h->non_zero_count_cache[2+8*0]= h->non_zero_count[top_xy][8];
0da71265 519
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520 h->non_zero_count_cache[1+8*3]= h->non_zero_count[top_xy][10];
521 h->non_zero_count_cache[2+8*3]= h->non_zero_count[top_xy][11];
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522
523 h->top_cbp= h->cbp_table[top_xy];
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524 }else{
525 h->non_zero_count_cache[4+8*0]=
526 h->non_zero_count_cache[5+8*0]=
527 h->non_zero_count_cache[6+8*0]=
528 h->non_zero_count_cache[7+8*0]=
529
530 h->non_zero_count_cache[1+8*0]=
531 h->non_zero_count_cache[2+8*0]=
532
533 h->non_zero_count_cache[1+8*3]=
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534 h->non_zero_count_cache[2+8*3]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
535
536 if(IS_INTRA(mb_type)) h->top_cbp= 0x1C0;
537 else h->top_cbp= 0;
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538 }
539
540 if(left_type[0]){
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541 h->non_zero_count_cache[3+8*1]= h->non_zero_count[left_xy[0]][6];
542 h->non_zero_count_cache[3+8*2]= h->non_zero_count[left_xy[0]][5];
543 h->non_zero_count_cache[0+8*1]= h->non_zero_count[left_xy[0]][9]; //FIXME left_block
544 h->non_zero_count_cache[0+8*4]= h->non_zero_count[left_xy[0]][12];
3981c385 545 h->left_cbp= h->cbp_table[left_xy[0]]; //FIXME interlacing
0da71265
MN
546 }else{
547 h->non_zero_count_cache[3+8*1]=
548 h->non_zero_count_cache[3+8*2]=
549 h->non_zero_count_cache[0+8*1]=
3981c385
MN
550 h->non_zero_count_cache[0+8*4]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
551
552 if(IS_INTRA(mb_type)) h->left_cbp= 0x1C0;//FIXME interlacing
553 else h->left_cbp= 0;
0da71265
MN
554 }
555
556 if(left_type[1]){
53c05b1e
MN
557 h->non_zero_count_cache[3+8*3]= h->non_zero_count[left_xy[1]][4];
558 h->non_zero_count_cache[3+8*4]= h->non_zero_count[left_xy[1]][3];
559 h->non_zero_count_cache[0+8*2]= h->non_zero_count[left_xy[1]][8];
560 h->non_zero_count_cache[0+8*5]= h->non_zero_count[left_xy[1]][11];
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MN
561 }else{
562 h->non_zero_count_cache[3+8*3]=
563 h->non_zero_count_cache[3+8*4]=
564 h->non_zero_count_cache[0+8*2]=
3981c385 565 h->non_zero_count_cache[0+8*5]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
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MN
566 }
567
568#if 1
5ad984c9
LM
569 //FIXME direct mb can skip much of this
570 if(IS_INTER(mb_type) || (IS_DIRECT(mb_type) && h->direct_spatial_mv_pred)){
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MN
571 int list;
572 for(list=0; list<2; list++){
5ad984c9 573 if((!IS_8X8(mb_type)) && !USES_LIST(mb_type, list) && !IS_DIRECT(mb_type)){
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MN
574 /*if(!h->mv_cache_clean[list]){
575 memset(h->mv_cache [list], 0, 8*5*2*sizeof(int16_t)); //FIXME clean only input? clean at all?
576 memset(h->ref_cache[list], PART_NOT_AVAILABLE, 8*5*sizeof(int8_t));
577 h->mv_cache_clean[list]= 1;
578 }*/
5ad984c9 579 continue;
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MN
580 }
581 h->mv_cache_clean[list]= 0;
582
583 if(IS_INTER(topleft_type)){
584 const int b_xy = h->mb2b_xy[topleft_xy] + 3 + 3*h->b_stride;
585 const int b8_xy= h->mb2b8_xy[topleft_xy] + 1 + h->b8_stride;
586 *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
587 h->ref_cache[list][scan8[0] - 1 - 1*8]= s->current_picture.ref_index[list][b8_xy];
588 }else{
589 *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= 0;
590 h->ref_cache[list][scan8[0] - 1 - 1*8]= topleft_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
591 }
592
593 if(IS_INTER(top_type)){
594 const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
595 const int b8_xy= h->mb2b8_xy[top_xy] + h->b8_stride;
596 *(uint32_t*)h->mv_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 0];
597 *(uint32_t*)h->mv_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 1];
598 *(uint32_t*)h->mv_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 2];
599 *(uint32_t*)h->mv_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 3];
600 h->ref_cache[list][scan8[0] + 0 - 1*8]=
601 h->ref_cache[list][scan8[0] + 1 - 1*8]= s->current_picture.ref_index[list][b8_xy + 0];
602 h->ref_cache[list][scan8[0] + 2 - 1*8]=
603 h->ref_cache[list][scan8[0] + 3 - 1*8]= s->current_picture.ref_index[list][b8_xy + 1];
604 }else{
605 *(uint32_t*)h->mv_cache [list][scan8[0] + 0 - 1*8]=
606 *(uint32_t*)h->mv_cache [list][scan8[0] + 1 - 1*8]=
607 *(uint32_t*)h->mv_cache [list][scan8[0] + 2 - 1*8]=
608 *(uint32_t*)h->mv_cache [list][scan8[0] + 3 - 1*8]= 0;
609 *(uint32_t*)&h->ref_cache[list][scan8[0] + 0 - 1*8]= ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101;
610 }
611
612 if(IS_INTER(topright_type)){
613 const int b_xy= h->mb2b_xy[topright_xy] + 3*h->b_stride;
614 const int b8_xy= h->mb2b8_xy[topright_xy] + h->b8_stride;
615 *(uint32_t*)h->mv_cache[list][scan8[0] + 4 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
616 h->ref_cache[list][scan8[0] + 4 - 1*8]= s->current_picture.ref_index[list][b8_xy];
617 }else{
618 *(uint32_t*)h->mv_cache [list][scan8[0] + 4 - 1*8]= 0;
619 h->ref_cache[list][scan8[0] + 4 - 1*8]= topright_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
620 }
621
622 //FIXME unify cleanup or sth
623 if(IS_INTER(left_type[0])){
624 const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
625 const int b8_xy= h->mb2b8_xy[left_xy[0]] + 1;
626 *(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]];
627 *(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]];
628 h->ref_cache[list][scan8[0] - 1 + 0*8]=
629 h->ref_cache[list][scan8[0] - 1 + 1*8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[0]>>1)];
630 }else{
631 *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 0*8]=
632 *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 1*8]= 0;
633 h->ref_cache[list][scan8[0] - 1 + 0*8]=
634 h->ref_cache[list][scan8[0] - 1 + 1*8]= left_type[0] ? LIST_NOT_USED : PART_NOT_AVAILABLE;
635 }
636
637 if(IS_INTER(left_type[1])){
638 const int b_xy= h->mb2b_xy[left_xy[1]] + 3;
639 const int b8_xy= h->mb2b8_xy[left_xy[1]] + 1;
640 *(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]];
641 *(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]];
642 h->ref_cache[list][scan8[0] - 1 + 2*8]=
643 h->ref_cache[list][scan8[0] - 1 + 3*8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[2]>>1)];
644 }else{
645 *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 2*8]=
646 *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 3*8]= 0;
647 h->ref_cache[list][scan8[0] - 1 + 2*8]=
648 h->ref_cache[list][scan8[0] - 1 + 3*8]= left_type[0] ? LIST_NOT_USED : PART_NOT_AVAILABLE;
649 }
650
651 h->ref_cache[list][scan8[5 ]+1] =
652 h->ref_cache[list][scan8[7 ]+1] =
653 h->ref_cache[list][scan8[13]+1] = //FIXME remove past 3 (init somewher else)
654 h->ref_cache[list][scan8[4 ]] =
655 h->ref_cache[list][scan8[12]] = PART_NOT_AVAILABLE;
656 *(uint32_t*)h->mv_cache [list][scan8[5 ]+1]=
657 *(uint32_t*)h->mv_cache [list][scan8[7 ]+1]=
658 *(uint32_t*)h->mv_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewher else)
659 *(uint32_t*)h->mv_cache [list][scan8[4 ]]=
660 *(uint32_t*)h->mv_cache [list][scan8[12]]= 0;
9e528114
LA
661
662 if( h->pps.cabac ) {
663 /* XXX beurk, Load mvd */
664 if(IS_INTER(topleft_type)){
665 const int b_xy = h->mb2b_xy[topleft_xy] + 3 + 3*h->b_stride;
666 *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy];
667 }else{
668 *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 - 1*8]= 0;
669 }
670
671 if(IS_INTER(top_type)){
672 const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
673 *(uint32_t*)h->mvd_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 0];
674 *(uint32_t*)h->mvd_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 1];
675 *(uint32_t*)h->mvd_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 2];
676 *(uint32_t*)h->mvd_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 3];
677 }else{
678 *(uint32_t*)h->mvd_cache [list][scan8[0] + 0 - 1*8]=
679 *(uint32_t*)h->mvd_cache [list][scan8[0] + 1 - 1*8]=
680 *(uint32_t*)h->mvd_cache [list][scan8[0] + 2 - 1*8]=
681 *(uint32_t*)h->mvd_cache [list][scan8[0] + 3 - 1*8]= 0;
682 }
683 if(IS_INTER(left_type[0])){
684 const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
685 *(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]];
686 *(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]];
687 }else{
688 *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 0*8]=
689 *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 1*8]= 0;
690 }
691 if(IS_INTER(left_type[1])){
692 const int b_xy= h->mb2b_xy[left_xy[1]] + 3;
693 *(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]];
694 *(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]];
695 }else{
696 *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 2*8]=
697 *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 3*8]= 0;
698 }
699 *(uint32_t*)h->mvd_cache [list][scan8[5 ]+1]=
700 *(uint32_t*)h->mvd_cache [list][scan8[7 ]+1]=
701 *(uint32_t*)h->mvd_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewher else)
702 *(uint32_t*)h->mvd_cache [list][scan8[4 ]]=
703 *(uint32_t*)h->mvd_cache [list][scan8[12]]= 0;
5ad984c9
LM
704
705 if(h->slice_type == B_TYPE){
706 fill_rectangle(&h->direct_cache[scan8[0]], 4, 4, 8, 0, 1);
707
708 if(IS_DIRECT(top_type)){
709 *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0x01010101;
710 }else if(IS_8X8(top_type)){
711 int b8_xy = h->mb2b8_xy[top_xy] + h->b8_stride;
712 h->direct_cache[scan8[0] + 0 - 1*8]= h->direct_table[b8_xy];
713 h->direct_cache[scan8[0] + 2 - 1*8]= h->direct_table[b8_xy + 1];
714 }else{
715 *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0;
716 }
717
718 //FIXME interlacing
719 if(IS_DIRECT(left_type[0])){
720 h->direct_cache[scan8[0] - 1 + 0*8]=
721 h->direct_cache[scan8[0] - 1 + 2*8]= 1;
722 }else if(IS_8X8(left_type[0])){
723 int b8_xy = h->mb2b8_xy[left_xy[0]] + 1;
724 h->direct_cache[scan8[0] - 1 + 0*8]= h->direct_table[b8_xy];
725 h->direct_cache[scan8[0] - 1 + 2*8]= h->direct_table[b8_xy + h->b8_stride];
726 }else{
727 h->direct_cache[scan8[0] - 1 + 0*8]=
728 h->direct_cache[scan8[0] - 1 + 2*8]= 0;
729 }
730 }
9e528114 731 }
0da71265 732 }
0da71265
MN
733 }
734#endif
735}
736
737static inline void write_back_intra_pred_mode(H264Context *h){
738 MpegEncContext * const s = &h->s;
7bc9090a 739 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
0da71265
MN
740
741 h->intra4x4_pred_mode[mb_xy][0]= h->intra4x4_pred_mode_cache[7+8*1];
742 h->intra4x4_pred_mode[mb_xy][1]= h->intra4x4_pred_mode_cache[7+8*2];
743 h->intra4x4_pred_mode[mb_xy][2]= h->intra4x4_pred_mode_cache[7+8*3];
744 h->intra4x4_pred_mode[mb_xy][3]= h->intra4x4_pred_mode_cache[7+8*4];
745 h->intra4x4_pred_mode[mb_xy][4]= h->intra4x4_pred_mode_cache[4+8*4];
746 h->intra4x4_pred_mode[mb_xy][5]= h->intra4x4_pred_mode_cache[5+8*4];
747 h->intra4x4_pred_mode[mb_xy][6]= h->intra4x4_pred_mode_cache[6+8*4];
748}
749
750/**
751 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
752 */
753static inline int check_intra4x4_pred_mode(H264Context *h){
754 MpegEncContext * const s = &h->s;
755 static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
756 static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
757 int i;
758
759 if(!(h->top_samples_available&0x8000)){
760 for(i=0; i<4; i++){
761 int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
762 if(status<0){
9b879566 763 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
764 return -1;
765 } else if(status){
766 h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
767 }
768 }
769 }
770
771 if(!(h->left_samples_available&0x8000)){
772 for(i=0; i<4; i++){
773 int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
774 if(status<0){
9b879566 775 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
776 return -1;
777 } else if(status){
778 h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
779 }
780 }
781 }
782
783 return 0;
784} //FIXME cleanup like next
785
786/**
787 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
788 */
789static inline int check_intra_pred_mode(H264Context *h, int mode){
790 MpegEncContext * const s = &h->s;
791 static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
792 static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
793
5175b937
LLL
794 if(mode < 0 || mode > 6) {
795 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 796 return -1;
5175b937 797 }
7440fe83 798
0da71265
MN
799 if(!(h->top_samples_available&0x8000)){
800 mode= top[ mode ];
801 if(mode<0){
9b879566 802 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
803 return -1;
804 }
805 }
806
807 if(!(h->left_samples_available&0x8000)){
808 mode= left[ mode ];
809 if(mode<0){
9b879566 810 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
811 return -1;
812 }
813 }
814
815 return mode;
816}
817
818/**
819 * gets the predicted intra4x4 prediction mode.
820 */
821static inline int pred_intra_mode(H264Context *h, int n){
822 const int index8= scan8[n];
823 const int left= h->intra4x4_pred_mode_cache[index8 - 1];
824 const int top = h->intra4x4_pred_mode_cache[index8 - 8];
825 const int min= FFMIN(left, top);
826
95c26348 827 tprintf("mode:%d %d min:%d\n", left ,top, min);
0da71265
MN
828
829 if(min<0) return DC_PRED;
830 else return min;
831}
832
833static inline void write_back_non_zero_count(H264Context *h){
834 MpegEncContext * const s = &h->s;
7bc9090a 835 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
0da71265 836
53c05b1e
MN
837 h->non_zero_count[mb_xy][0]= h->non_zero_count_cache[4+8*4];
838 h->non_zero_count[mb_xy][1]= h->non_zero_count_cache[5+8*4];
839 h->non_zero_count[mb_xy][2]= h->non_zero_count_cache[6+8*4];
840 h->non_zero_count[mb_xy][3]= h->non_zero_count_cache[7+8*4];
841 h->non_zero_count[mb_xy][4]= h->non_zero_count_cache[7+8*3];
842 h->non_zero_count[mb_xy][5]= h->non_zero_count_cache[7+8*2];
843 h->non_zero_count[mb_xy][6]= h->non_zero_count_cache[7+8*1];
844
845 h->non_zero_count[mb_xy][7]= h->non_zero_count_cache[1+8*2];
846 h->non_zero_count[mb_xy][8]= h->non_zero_count_cache[2+8*2];
847 h->non_zero_count[mb_xy][9]= h->non_zero_count_cache[2+8*1];
848
849 h->non_zero_count[mb_xy][10]=h->non_zero_count_cache[1+8*5];
850 h->non_zero_count[mb_xy][11]=h->non_zero_count_cache[2+8*5];
851 h->non_zero_count[mb_xy][12]=h->non_zero_count_cache[2+8*4];
0da71265
MN
852}
853
854/**
855 * gets the predicted number of non zero coefficients.
856 * @param n block index
857 */
858static inline int pred_non_zero_count(H264Context *h, int n){
859 const int index8= scan8[n];
860 const int left= h->non_zero_count_cache[index8 - 1];
861 const int top = h->non_zero_count_cache[index8 - 8];
862 int i= left + top;
863
864 if(i<64) i= (i+1)>>1;
865
95c26348 866 tprintf("pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31);
0da71265
MN
867
868 return i&31;
869}
870
1924f3ce
MN
871static inline int fetch_diagonal_mv(H264Context *h, const int16_t **C, int i, int list, int part_width){
872 const int topright_ref= h->ref_cache[list][ i - 8 + part_width ];
873
874 if(topright_ref != PART_NOT_AVAILABLE){
875 *C= h->mv_cache[list][ i - 8 + part_width ];
876 return topright_ref;
877 }else{
95c26348
MN
878 tprintf("topright MV not available\n");
879
1924f3ce
MN
880 *C= h->mv_cache[list][ i - 8 - 1 ];
881 return h->ref_cache[list][ i - 8 - 1 ];
882 }
883}
884
0da71265
MN
885/**
886 * gets the predicted MV.
887 * @param n the block index
888 * @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
889 * @param mx the x component of the predicted motion vector
890 * @param my the y component of the predicted motion vector
891 */
892static inline void pred_motion(H264Context * const h, int n, int part_width, int list, int ref, int * const mx, int * const my){
0da71265
MN
893 const int index8= scan8[n];
894 const int top_ref= h->ref_cache[list][ index8 - 8 ];
0da71265
MN
895 const int left_ref= h->ref_cache[list][ index8 - 1 ];
896 const int16_t * const A= h->mv_cache[list][ index8 - 1 ];
897 const int16_t * const B= h->mv_cache[list][ index8 - 8 ];
1924f3ce
MN
898 const int16_t * C;
899 int diagonal_ref, match_count;
900
0da71265 901 assert(part_width==1 || part_width==2 || part_width==4);
1924f3ce 902
0da71265
MN
903/* mv_cache
904 B . . A T T T T
905 U . . L . . , .
906 U . . L . . . .
907 U . . L . . , .
908 . . . L . . . .
909*/
1924f3ce
MN
910
911 diagonal_ref= fetch_diagonal_mv(h, &C, index8, list, part_width);
912 match_count= (diagonal_ref==ref) + (top_ref==ref) + (left_ref==ref);
1924f3ce
MN
913 if(match_count > 1){ //most common
914 *mx= mid_pred(A[0], B[0], C[0]);
915 *my= mid_pred(A[1], B[1], C[1]);
916 }else if(match_count==1){
917 if(left_ref==ref){
918 *mx= A[0];
919 *my= A[1];
920 }else if(top_ref==ref){
921 *mx= B[0];
922 *my= B[1];
0da71265 923 }else{
1924f3ce
MN
924 *mx= C[0];
925 *my= C[1];
0da71265
MN
926 }
927 }else{
1924f3ce 928 if(top_ref == PART_NOT_AVAILABLE && diagonal_ref == PART_NOT_AVAILABLE && left_ref != PART_NOT_AVAILABLE){
0da71265 929 *mx= A[0];
1924f3ce 930 *my= A[1];
0da71265 931 }else{
1924f3ce
MN
932 *mx= mid_pred(A[0], B[0], C[0]);
933 *my= mid_pred(A[1], B[1], C[1]);
0da71265 934 }
0da71265 935 }
1924f3ce 936
af6e2fed 937 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
938}
939
940/**
941 * gets the directionally predicted 16x8 MV.
942 * @param n the block index
943 * @param mx the x component of the predicted motion vector
944 * @param my the y component of the predicted motion vector
945 */
946static inline void pred_16x8_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
0da71265
MN
947 if(n==0){
948 const int top_ref= h->ref_cache[list][ scan8[0] - 8 ];
949 const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];
950
579448a0 951 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
952
953 if(top_ref == ref){
954 *mx= B[0];
955 *my= B[1];
956 return;
957 }
958 }else{
959 const int left_ref= h->ref_cache[list][ scan8[8] - 1 ];
960 const int16_t * const A= h->mv_cache[list][ scan8[8] - 1 ];
961
579448a0 962 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
963
964 if(left_ref == ref){
965 *mx= A[0];
966 *my= A[1];
967 return;
968 }
969 }
970
971 //RARE
972 pred_motion(h, n, 4, list, ref, mx, my);
973}
974
975/**
976 * gets the directionally predicted 8x16 MV.
977 * @param n the block index
978 * @param mx the x component of the predicted motion vector
979 * @param my the y component of the predicted motion vector
980 */
981static inline void pred_8x16_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
0da71265
MN
982 if(n==0){
983 const int left_ref= h->ref_cache[list][ scan8[0] - 1 ];
984 const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ];
985
579448a0 986 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
987
988 if(left_ref == ref){
989 *mx= A[0];
990 *my= A[1];
991 return;
992 }
993 }else{
1924f3ce
MN
994 const int16_t * C;
995 int diagonal_ref;
996
997 diagonal_ref= fetch_diagonal_mv(h, &C, scan8[4], list, 2);
0da71265 998
579448a0 999 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 1000
1924f3ce 1001 if(diagonal_ref == ref){
0da71265
MN
1002 *mx= C[0];
1003 *my= C[1];
1004 return;
1005 }
0da71265
MN
1006 }
1007
1008 //RARE
1009 pred_motion(h, n, 2, list, ref, mx, my);
1010}
1011
1012static inline void pred_pskip_motion(H264Context * const h, int * const mx, int * const my){
0da71265
MN
1013 const int top_ref = h->ref_cache[0][ scan8[0] - 8 ];
1014 const int left_ref= h->ref_cache[0][ scan8[0] - 1 ];
1015
5175b937 1016 tprintf("pred_pskip: (%d) (%d) at %2d %2d\n", top_ref, left_ref, h->s.mb_x, h->s.mb_y);
0da71265
MN
1017
1018 if(top_ref == PART_NOT_AVAILABLE || left_ref == PART_NOT_AVAILABLE
1019 || (top_ref == 0 && *(uint32_t*)h->mv_cache[0][ scan8[0] - 8 ] == 0)
1020 || (left_ref == 0 && *(uint32_t*)h->mv_cache[0][ scan8[0] - 1 ] == 0)){
1021
1022 *mx = *my = 0;
1023 return;
1024 }
1025
1026 pred_motion(h, 0, 4, 0, 0, mx, my);
1027
1028 return;
1029}
1030
5ad984c9
LM
1031static inline void direct_dist_scale_factor(H264Context * const h){
1032 const int poc = h->s.current_picture_ptr->poc;
1033 const int poc1 = h->ref_list[1][0].poc;
1034 int i;
1035 for(i=0; i<h->ref_count[0]; i++){
1036 int poc0 = h->ref_list[0][i].poc;
1037 int td = clip(poc1 - poc0, -128, 127);
1038 if(td == 0 /* FIXME || pic0 is a long-term ref */){
1039 h->dist_scale_factor[i] = 256;
1040 }else{
1041 int tb = clip(poc - poc0, -128, 127);
1042 int tx = (16384 + (ABS(td) >> 1)) / td;
1043 h->dist_scale_factor[i] = clip((tb*tx + 32) >> 6, -1024, 1023);
1044 }
1045 }
1046}
1047
1048static inline void pred_direct_motion(H264Context * const h, int *mb_type){
1049 MpegEncContext * const s = &h->s;
1050 const int mb_xy = s->mb_x + s->mb_y*s->mb_stride;
1051 const int b8_xy = 2*s->mb_x + 2*s->mb_y*h->b8_stride;
1052 const int b4_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
1053 const int mb_type_col = h->ref_list[1][0].mb_type[mb_xy];
1054 const int16_t (*l1mv0)[2] = (const int16_t (*)[2]) &h->ref_list[1][0].motion_val[0][b4_xy];
1055 const int8_t *l1ref0 = &h->ref_list[1][0].ref_index[0][b8_xy];
1056 const int is_b8x8 = IS_8X8(*mb_type);
1057 int sub_mb_type;
1058 int i8, i4;
1059
1060 if(IS_8X8(mb_type_col) && !h->sps.direct_8x8_inference_flag){
1061 /* FIXME save sub mb types from previous frames (or derive from MVs)
1062 * so we know exactly what block size to use */
1063 sub_mb_type = MB_TYPE_8x8|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_4x4 */
1064 *mb_type = MB_TYPE_8x8;
1065 }else if(!is_b8x8 && (IS_16X16(mb_type_col) || IS_INTRA(mb_type_col))){
1066 sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1067 *mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_16x16 */
1068 }else{
1069 sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1070 *mb_type = MB_TYPE_8x8;
1071 }
1072 if(!is_b8x8)
1073 *mb_type |= MB_TYPE_DIRECT2;
1074
1075 if(h->direct_spatial_mv_pred){
1076 int ref[2];
1077 int mv[2][2];
1078 int list;
1079
1080 /* ref = min(neighbors) */
1081 for(list=0; list<2; list++){
1082 int refa = h->ref_cache[list][scan8[0] - 1];
1083 int refb = h->ref_cache[list][scan8[0] - 8];
1084 int refc = h->ref_cache[list][scan8[0] - 8 + 4];
1085 if(refc == -2)
1086 refc = h->ref_cache[list][scan8[0] - 8 - 1];
1087 ref[list] = refa;
1088 if(ref[list] < 0 || (refb < ref[list] && refb >= 0))
1089 ref[list] = refb;
1090 if(ref[list] < 0 || (refc < ref[list] && refc >= 0))
1091 ref[list] = refc;
1092 if(ref[list] < 0)
1093 ref[list] = -1;
1094 }
1095
1096 if(ref[0] < 0 && ref[1] < 0){
1097 ref[0] = ref[1] = 0;
1098 mv[0][0] = mv[0][1] =
1099 mv[1][0] = mv[1][1] = 0;
1100 }else{
1101 for(list=0; list<2; list++){
1102 if(ref[list] >= 0)
1103 pred_motion(h, 0, 4, list, ref[list], &mv[list][0], &mv[list][1]);
1104 else
1105 mv[list][0] = mv[list][1] = 0;
1106 }
1107 }
1108
1109 if(ref[1] < 0){
1110 *mb_type &= ~MB_TYPE_P0L1;
1111 sub_mb_type &= ~MB_TYPE_P0L1;
1112 }else if(ref[0] < 0){
1113 *mb_type &= ~MB_TYPE_P0L0;
1114 sub_mb_type &= ~MB_TYPE_P0L0;
1115 }
1116
1117 if(IS_16X16(*mb_type)){
1118 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref[0], 1);
1119 fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, ref[1], 1);
1120 if(!IS_INTRA(mb_type_col) && l1ref0[0] == 0 &&
1121 ABS(l1mv0[0][0]) <= 1 && ABS(l1mv0[0][1]) <= 1){
1122 if(ref[0] > 0)
1123 fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mv[0][0],mv[0][1]), 4);
1124 else
1125 fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);
1126 if(ref[1] > 0)
1127 fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, pack16to32(mv[1][0],mv[1][1]), 4);
1128 else
1129 fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, 0, 4);
1130 }else{
1131 fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mv[0][0],mv[0][1]), 4);
1132 fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, pack16to32(mv[1][0],mv[1][1]), 4);
1133 }
1134 }else{
1135 for(i8=0; i8<4; i8++){
1136 const int x8 = i8&1;
1137 const int y8 = i8>>1;
1138
1139 if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1140 continue;
1141 h->sub_mb_type[i8] = sub_mb_type;
1142
1143 fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mv[0][0],mv[0][1]), 4);
1144 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mv[1][0],mv[1][1]), 4);
1145 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref[0], 1);
1146 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, ref[1], 1);
1147
1148 /* col_zero_flag */
1149 if(!IS_INTRA(mb_type_col) && l1ref0[x8 + y8*h->b8_stride] == 0){
1150 for(i4=0; i4<4; i4++){
1151 const int16_t *mv_col = l1mv0[x8*2 + (i4&1) + (y8*2 + (i4>>1))*h->b_stride];
1152 if(ABS(mv_col[0]) <= 1 && ABS(mv_col[1]) <= 1){
1153 if(ref[0] == 0)
1154 *(uint32_t*)h->mv_cache[0][scan8[i8*4+i4]] = 0;
1155 if(ref[1] == 0)
1156 *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] = 0;
1157 }
1158 }
1159 }
1160 }
1161 }
1162 }else{ /* direct temporal mv pred */
1163 /* FIXME assumes that L1ref0 used the same ref lists as current frame */
1164 if(IS_16X16(*mb_type)){
1165 fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, 0, 1);
1166 if(IS_INTRA(mb_type_col)){
1167 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);
1168 fill_rectangle(&h-> mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);
1169 fill_rectangle(&h-> mv_cache[1][scan8[0]], 4, 4, 8, 0, 4);
1170 }else{
1171 const int ref0 = l1ref0[0];
1172 const int dist_scale_factor = h->dist_scale_factor[ref0];
1173 const int16_t *mv_col = l1mv0[0];
1174 int mv_l0[2];
1175 mv_l0[0] = (dist_scale_factor * mv_col[0] + 128) >> 8;
1176 mv_l0[1] = (dist_scale_factor * mv_col[1] + 128) >> 8;
1177 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref0, 1);
1178 fill_rectangle(&h-> mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mv_l0[0],mv_l0[1]), 4);
1179 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);
1180 }
1181 }else{
1182 for(i8=0; i8<4; i8++){
1183 const int x8 = i8&1;
1184 const int y8 = i8>>1;
1185 int ref0, dist_scale_factor;
1186
1187 if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1188 continue;
1189 h->sub_mb_type[i8] = sub_mb_type;
1190 if(IS_INTRA(mb_type_col)){
1191 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
1192 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1193 fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1194 fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1195 continue;
1196 }
1197
1198 ref0 = l1ref0[x8 + y8*h->b8_stride];
1199 dist_scale_factor = h->dist_scale_factor[ref0];
1200
1201 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
1202 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1203 for(i4=0; i4<4; i4++){
1204 const int16_t *mv_col = l1mv0[x8*2 + (i4&1) + (y8*2 + (i4>>1))*h->b_stride];
1205 int16_t *mv_l0 = h->mv_cache[0][scan8[i8*4+i4]];
1206 mv_l0[0] = (dist_scale_factor * mv_col[0] + 128) >> 8;
1207 mv_l0[1] = (dist_scale_factor * mv_col[1] + 128) >> 8;
1208 *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] =
1209 pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
1210 }
1211 }
1212 }
1213 }
1214}
1215
0da71265
MN
1216static inline void write_back_motion(H264Context *h, int mb_type){
1217 MpegEncContext * const s = &h->s;
0da71265
MN
1218 const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
1219 const int b8_xy= 2*s->mb_x + 2*s->mb_y*h->b8_stride;
1220 int list;
1221
1222 for(list=0; list<2; list++){
1223 int y;
1224 if((!IS_8X8(mb_type)) && !USES_LIST(mb_type, list)){
1225 if(1){ //FIXME skip or never read if mb_type doesnt use it
1226 for(y=0; y<4; y++){
1227 *(uint64_t*)s->current_picture.motion_val[list][b_xy + 0 + y*h->b_stride]=
1228 *(uint64_t*)s->current_picture.motion_val[list][b_xy + 2 + y*h->b_stride]= 0;
1229 }
9e528114
LA
1230 if( h->pps.cabac ) {
1231 /* FIXME needed ? */
1232 for(y=0; y<4; y++){
1233 *(uint64_t*)h->mvd_table[list][b_xy + 0 + y*h->b_stride]=
1234 *(uint64_t*)h->mvd_table[list][b_xy + 2 + y*h->b_stride]= 0;
1235 }
1236 }
0da71265 1237 for(y=0; y<2; y++){
7d7f635d 1238 *(uint16_t*)&s->current_picture.ref_index[list][b8_xy + y*h->b8_stride]= (LIST_NOT_USED&0xFF)*0x0101;
0da71265
MN
1239 }
1240 }
5ad984c9 1241 continue;
0da71265
MN
1242 }
1243
1244 for(y=0; y<4; y++){
1245 *(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];
1246 *(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];
1247 }
9e528114
LA
1248 if( h->pps.cabac ) {
1249 for(y=0; y<4; y++){
1250 *(uint64_t*)h->mvd_table[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+0 + 8*y];
1251 *(uint64_t*)h->mvd_table[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+2 + 8*y];
1252 }
1253 }
0da71265
MN
1254 for(y=0; y<2; y++){
1255 s->current_picture.ref_index[list][b8_xy + 0 + y*h->b8_stride]= h->ref_cache[list][scan8[0]+0 + 16*y];
1256 s->current_picture.ref_index[list][b8_xy + 1 + y*h->b8_stride]= h->ref_cache[list][scan8[0]+2 + 16*y];
1257 }
1258 }
5ad984c9
LM
1259
1260 if(h->slice_type == B_TYPE && h->pps.cabac){
1261 if(IS_8X8(mb_type)){
1262 h->direct_table[b8_xy+1+0*h->b8_stride] = IS_DIRECT(h->sub_mb_type[1]) ? 1 : 0;
1263 h->direct_table[b8_xy+0+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[2]) ? 1 : 0;
1264 h->direct_table[b8_xy+1+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[3]) ? 1 : 0;
1265 }
1266 }
0da71265
MN
1267}
1268
1269/**
1270 * Decodes a network abstraction layer unit.
1271 * @param consumed is the number of bytes used as input
1272 * @param length is the length of the array
1273 * @param dst_length is the number of decoded bytes FIXME here or a decode rbsp ttailing?
1274 * @returns decoded bytes, might be src+1 if no escapes
1275 */
1276static uint8_t *decode_nal(H264Context *h, uint8_t *src, int *dst_length, int *consumed, int length){
1277 int i, si, di;
1278 uint8_t *dst;
1279
1280// src[0]&0x80; //forbidden bit
1281 h->nal_ref_idc= src[0]>>5;
1282 h->nal_unit_type= src[0]&0x1F;
1283
1284 src++; length--;
1285#if 0
1286 for(i=0; i<length; i++)
1287 printf("%2X ", src[i]);
1288#endif
1289 for(i=0; i+1<length; i+=2){
1290 if(src[i]) continue;
1291 if(i>0 && src[i-1]==0) i--;
1292 if(i+2<length && src[i+1]==0 && src[i+2]<=3){
1293 if(src[i+2]!=3){
1294 /* startcode, so we must be past the end */
1295 length=i;
1296 }
1297 break;
1298 }
1299 }
1300
1301 if(i>=length-1){ //no escaped 0
1302 *dst_length= length;
1303 *consumed= length+1; //+1 for the header
1304 return src;
1305 }
1306
1307 h->rbsp_buffer= av_fast_realloc(h->rbsp_buffer, &h->rbsp_buffer_size, length);
1308 dst= h->rbsp_buffer;
1309
1310//printf("deoding esc\n");
1311 si=di=0;
1312 while(si<length){
1313 //remove escapes (very rare 1:2^22)
1314 if(si+2<length && src[si]==0 && src[si+1]==0 && src[si+2]<=3){
1315 if(src[si+2]==3){ //escape
1316 dst[di++]= 0;
1317 dst[di++]= 0;
1318 si+=3;
c8470cc1 1319 continue;
0da71265
MN
1320 }else //next start code
1321 break;
1322 }
1323
1324 dst[di++]= src[si++];
1325 }
1326
1327 *dst_length= di;
1328 *consumed= si + 1;//+1 for the header
1329//FIXME store exact number of bits in the getbitcontext (its needed for decoding)
1330 return dst;
1331}
1332
e5017ab8 1333#if 0
0da71265
MN
1334/**
1335 * @param src the data which should be escaped
1336 * @param dst the target buffer, dst+1 == src is allowed as a special case
1337 * @param length the length of the src data
1338 * @param dst_length the length of the dst array
1339 * @returns length of escaped data in bytes or -1 if an error occured
1340 */
1341static int encode_nal(H264Context *h, uint8_t *dst, uint8_t *src, int length, int dst_length){
1342 int i, escape_count, si, di;
1343 uint8_t *temp;
1344
1345 assert(length>=0);
1346 assert(dst_length>0);
1347
1348 dst[0]= (h->nal_ref_idc<<5) + h->nal_unit_type;
1349
1350 if(length==0) return 1;
1351
1352 escape_count= 0;
1353 for(i=0; i<length; i+=2){
1354 if(src[i]) continue;
1355 if(i>0 && src[i-1]==0)
1356 i--;
1357 if(i+2<length && src[i+1]==0 && src[i+2]<=3){
1358 escape_count++;
1359 i+=2;
1360 }
1361 }
1362
1363 if(escape_count==0){
1364 if(dst+1 != src)
1365 memcpy(dst+1, src, length);
1366 return length + 1;
1367 }
1368
1369 if(length + escape_count + 1> dst_length)
1370 return -1;
1371
1372 //this should be damn rare (hopefully)
1373
1374 h->rbsp_buffer= av_fast_realloc(h->rbsp_buffer, &h->rbsp_buffer_size, length + escape_count);
1375 temp= h->rbsp_buffer;
1376//printf("encoding esc\n");
1377
1378 si= 0;
1379 di= 0;
1380 while(si < length){
1381 if(si+2<length && src[si]==0 && src[si+1]==0 && src[si+2]<=3){
1382 temp[di++]= 0; si++;
1383 temp[di++]= 0; si++;
1384 temp[di++]= 3;
1385 temp[di++]= src[si++];
1386 }
1387 else
1388 temp[di++]= src[si++];
1389 }
1390 memcpy(dst+1, temp, length+escape_count);
1391
1392 assert(di == length+escape_count);
1393
1394 return di + 1;
1395}
1396
1397/**
1398 * write 1,10,100,1000,... for alignment, yes its exactly inverse to mpeg4
1399 */
1400static void encode_rbsp_trailing(PutBitContext *pb){
1401 int length;
1402 put_bits(pb, 1, 1);
fe455f33 1403 length= (-put_bits_count(pb))&7;
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1404 if(length) put_bits(pb, length, 0);
1405}
e5017ab8 1406#endif
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1407
1408/**
1409 * identifies the exact end of the bitstream
1410 * @return the length of the trailing, or 0 if damaged
1411 */
1412static int decode_rbsp_trailing(uint8_t *src){
1413 int v= *src;
1414 int r;
1415
95c26348 1416 tprintf("rbsp trailing %X\n", v);
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1417
1418 for(r=1; r<9; r++){
1419 if(v&1) return r;
1420 v>>=1;
1421 }
1422 return 0;
1423}
1424
1425/**
1426 * idct tranforms the 16 dc values and dequantize them.
1427 * @param qp quantization parameter
1428 */
1429static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp){
1430 const int qmul= dequant_coeff[qp][0];
1431#define stride 16
1432 int i;
1433 int temp[16]; //FIXME check if this is a good idea
1434 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
1435 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1436
1437//memset(block, 64, 2*256);
1438//return;
1439 for(i=0; i<4; i++){
1440 const int offset= y_offset[i];
1441 const int z0= block[offset+stride*0] + block[offset+stride*4];
1442 const int z1= block[offset+stride*0] - block[offset+stride*4];
1443 const int z2= block[offset+stride*1] - block[offset+stride*5];
1444 const int z3= block[offset+stride*1] + block[offset+stride*5];
1445
1446 temp[4*i+0]= z0+z3;
1447 temp[4*i+1]= z1+z2;
1448 temp[4*i+2]= z1-z2;
1449 temp[4*i+3]= z0-z3;
1450 }
1451
1452 for(i=0; i<4; i++){
1453 const int offset= x_offset[i];
1454 const int z0= temp[4*0+i] + temp[4*2+i];
1455 const int z1= temp[4*0+i] - temp[4*2+i];
1456 const int z2= temp[4*1+i] - temp[4*3+i];
1457 const int z3= temp[4*1+i] + temp[4*3+i];
1458
1459 block[stride*0 +offset]= ((z0 + z3)*qmul + 2)>>2; //FIXME think about merging this into decode_resdual
1460 block[stride*2 +offset]= ((z1 + z2)*qmul + 2)>>2;
1461 block[stride*8 +offset]= ((z1 - z2)*qmul + 2)>>2;
1462 block[stride*10+offset]= ((z0 - z3)*qmul + 2)>>2;
1463 }
1464}
1465
e5017ab8 1466#if 0
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1467/**
1468 * dct tranforms the 16 dc values.
1469 * @param qp quantization parameter ??? FIXME
1470 */
1471static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
1472// const int qmul= dequant_coeff[qp][0];
1473 int i;
1474 int temp[16]; //FIXME check if this is a good idea
1475 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
1476 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1477
1478 for(i=0; i<4; i++){
1479 const int offset= y_offset[i];
1480 const int z0= block[offset+stride*0] + block[offset+stride*4];
1481 const int z1= block[offset+stride*0] - block[offset+stride*4];
1482 const int z2= block[offset+stride*1] - block[offset+stride*5];
1483 const int z3= block[offset+stride*1] + block[offset+stride*5];
1484
1485 temp[4*i+0]= z0+z3;
1486 temp[4*i+1]= z1+z2;
1487 temp[4*i+2]= z1-z2;
1488 temp[4*i+3]= z0-z3;
1489 }
1490
1491 for(i=0; i<4; i++){
1492 const int offset= x_offset[i];
1493 const int z0= temp[4*0+i] + temp[4*2+i];
1494 const int z1= temp[4*0+i] - temp[4*2+i];
1495 const int z2= temp[4*1+i] - temp[4*3+i];
1496 const int z3= temp[4*1+i] + temp[4*3+i];
1497
1498 block[stride*0 +offset]= (z0 + z3)>>1;
1499 block[stride*2 +offset]= (z1 + z2)>>1;
1500 block[stride*8 +offset]= (z1 - z2)>>1;
1501 block[stride*10+offset]= (z0 - z3)>>1;
1502 }
1503}
e5017ab8
LA
1504#endif
1505
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1506#undef xStride
1507#undef stride
1508
1509static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp){
1510 const int qmul= dequant_coeff[qp][0];
1511 const int stride= 16*2;
1512 const int xStride= 16;
1513 int a,b,c,d,e;
1514
1515 a= block[stride*0 + xStride*0];
1516 b= block[stride*0 + xStride*1];
1517 c= block[stride*1 + xStride*0];
1518 d= block[stride*1 + xStride*1];
1519
1520 e= a-b;
1521 a= a+b;
1522 b= c-d;
1523 c= c+d;
1524
1525 block[stride*0 + xStride*0]= ((a+c)*qmul + 0)>>1;
1526 block[stride*0 + xStride*1]= ((e+b)*qmul + 0)>>1;
1527 block[stride*1 + xStride*0]= ((a-c)*qmul + 0)>>1;
1528 block[stride*1 + xStride*1]= ((e-b)*qmul + 0)>>1;
1529}
1530
e5017ab8 1531#if 0
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1532static void chroma_dc_dct_c(DCTELEM *block){
1533 const int stride= 16*2;
1534 const int xStride= 16;
1535 int a,b,c,d,e;
1536
1537 a= block[stride*0 + xStride*0];
1538 b= block[stride*0 + xStride*1];
1539 c= block[stride*1 + xStride*0];
1540 d= block[stride*1 + xStride*1];
1541
1542 e= a-b;
1543 a= a+b;
1544 b= c-d;
1545 c= c+d;
1546
1547 block[stride*0 + xStride*0]= (a+c);
1548 block[stride*0 + xStride*1]= (e+b);
1549 block[stride*1 + xStride*0]= (a-c);
1550 block[stride*1 + xStride*1]= (e-b);
1551}
e5017ab8 1552#endif
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1553
1554/**
1555 * gets the chroma qp.
1556 */
1557static inline int get_chroma_qp(H264Context *h, int qscale){
1558
1559 return chroma_qp[clip(qscale + h->pps.chroma_qp_index_offset, 0, 51)];
1560}
1561
1562
e5017ab8 1563#if 0
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1564static void h264_diff_dct_c(DCTELEM *block, uint8_t *src1, uint8_t *src2, int stride){
1565 int i;
1566 //FIXME try int temp instead of block
1567
1568 for(i=0; i<4; i++){
1569 const int d0= src1[0 + i*stride] - src2[0 + i*stride];
1570 const int d1= src1[1 + i*stride] - src2[1 + i*stride];
1571 const int d2= src1[2 + i*stride] - src2[2 + i*stride];
1572 const int d3= src1[3 + i*stride] - src2[3 + i*stride];
1573 const int z0= d0 + d3;
1574 const int z3= d0 - d3;
1575 const int z1= d1 + d2;
1576 const int z2= d1 - d2;
1577
1578 block[0 + 4*i]= z0 + z1;
1579 block[1 + 4*i]= 2*z3 + z2;
1580 block[2 + 4*i]= z0 - z1;
1581 block[3 + 4*i]= z3 - 2*z2;
1582 }
1583
1584 for(i=0; i<4; i++){
1585 const int z0= block[0*4 + i] + block[3*4 + i];
1586 const int z3= block[0*4 + i] - block[3*4 + i];
1587 const int z1= block[1*4 + i] + block[2*4 + i];
1588 const int z2= block[1*4 + i] - block[2*4 + i];
1589
1590 block[0*4 + i]= z0 + z1;
1591 block[1*4 + i]= 2*z3 + z2;
1592 block[2*4 + i]= z0 - z1;
1593 block[3*4 + i]= z3 - 2*z2;
1594 }
1595}
e5017ab8 1596#endif
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1597
1598//FIXME need to check that this doesnt overflow signed 32 bit for low qp, iam not sure, its very close
1599//FIXME check that gcc inlines this (and optimizes intra & seperate_dc stuff away)
1600static inline int quantize_c(DCTELEM *block, uint8_t *scantable, int qscale, int intra, int seperate_dc){
1601 int i;
1602 const int * const quant_table= quant_coeff[qscale];
1603 const int bias= intra ? (1<<QUANT_SHIFT)/3 : (1<<QUANT_SHIFT)/6;
1604 const unsigned int threshold1= (1<<QUANT_SHIFT) - bias - 1;
1605 const unsigned int threshold2= (threshold1<<1);
1606 int last_non_zero;
1607
1608 if(seperate_dc){
1609 if(qscale<=18){
1610 //avoid overflows
1611 const int dc_bias= intra ? (1<<(QUANT_SHIFT-2))/3 : (1<<(QUANT_SHIFT-2))/6;
1612 const unsigned int dc_threshold1= (1<<(QUANT_SHIFT-2)) - dc_bias - 1;
1613 const unsigned int dc_threshold2= (dc_threshold1<<1);
1614
1615 int level= block[0]*quant_coeff[qscale+18][0];
1616 if(((unsigned)(level+dc_threshold1))>dc_threshold2){
1617 if(level>0){
1618 level= (dc_bias + level)>>(QUANT_SHIFT-2);
1619 block[0]= level;
1620 }else{
1621 level= (dc_bias - level)>>(QUANT_SHIFT-2);
1622 block[0]= -level;
1623 }
1624// last_non_zero = i;
1625 }else{
1626 block[0]=0;
1627 }
1628 }else{
1629 const int dc_bias= intra ? (1<<(QUANT_SHIFT+1))/3 : (1<<(QUANT_SHIFT+1))/6;
1630 const unsigned int dc_threshold1= (1<<(QUANT_SHIFT+1)) - dc_bias - 1;
1631 const unsigned int dc_threshold2= (dc_threshold1<<1);
1632
1633 int level= block[0]*quant_table[0];
1634 if(((unsigned)(level+dc_threshold1))>dc_threshold2){
1635 if(level>0){
1636 level= (dc_bias + level)>>(QUANT_SHIFT+1);
1637 block[0]= level;
1638 }else{
1639 level= (dc_bias - level)>>(QUANT_SHIFT+1);
1640 block[0]= -level;
1641 }
1642// last_non_zero = i;
1643 }else{
1644 block[0]=0;
1645 }
1646 }
1647 last_non_zero= 0;
1648 i=1;
1649 }else{
1650 last_non_zero= -1;
1651 i=0;
1652 }
1653
1654 for(; i<16; i++){
1655 const int j= scantable[i];
1656 int level= block[j]*quant_table[j];
1657
1658// if( bias+level >= (1<<(QMAT_SHIFT - 3))
1659// || bias-level >= (1<<(QMAT_SHIFT - 3))){
1660 if(((unsigned)(level+threshold1))>threshold2){
1661 if(level>0){
1662 level= (bias + level)>>QUANT_SHIFT;
1663 block[j]= level;
1664 }else{
1665 level= (bias - level)>>QUANT_SHIFT;
1666 block[j]= -level;
1667 }
1668 last_non_zero = i;
1669 }else{
1670 block[j]=0;
1671 }
1672 }
1673
1674 return last_non_zero;
1675}
1676
1677static void pred4x4_vertical_c(uint8_t *src, uint8_t *topright, int stride){
1678 const uint32_t a= ((uint32_t*)(src-stride))[0];
1679 ((uint32_t*)(src+0*stride))[0]= a;
1680 ((uint32_t*)(src+1*stride))[0]= a;
1681 ((uint32_t*)(src+2*stride))[0]= a;
1682 ((uint32_t*)(src+3*stride))[0]= a;
1683}
1684
1685static void pred4x4_horizontal_c(uint8_t *src, uint8_t *topright, int stride){
1686 ((uint32_t*)(src+0*stride))[0]= src[-1+0*stride]*0x01010101;
1687 ((uint32_t*)(src+1*stride))[0]= src[-1+1*stride]*0x01010101;
1688 ((uint32_t*)(src+2*stride))[0]= src[-1+2*stride]*0x01010101;
1689 ((uint32_t*)(src+3*stride))[0]= src[-1+3*stride]*0x01010101;
1690}
1691
1692static void pred4x4_dc_c(uint8_t *src, uint8_t *topright, int stride){
1693 const int dc= ( src[-stride] + src[1-stride] + src[2-stride] + src[3-stride]
1694 + src[-1+0*stride] + src[-1+1*stride] + src[-1+2*stride] + src[-1+3*stride] + 4) >>3;
1695
1696 ((uint32_t*)(src+0*stride))[0]=
1697 ((uint32_t*)(src+1*stride))[0]=
1698 ((uint32_t*)(src+2*stride))[0]=
1699 ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101;
1700}
1701
1702static void pred4x4_left_dc_c(uint8_t *src, uint8_t *topright, int stride){
1703 const int dc= ( src[-1+0*stride] + src[-1+1*stride] + src[-1+2*stride] + src[-1+3*stride] + 2) >>2;
1704
1705 ((uint32_t*)(src+0*stride))[0]=
1706 ((uint32_t*)(src+1*stride))[0]=
1707 ((uint32_t*)(src+2*stride))[0]=
1708 ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101;
1709}
1710
1711static void pred4x4_top_dc_c(uint8_t *src, uint8_t *topright, int stride){
1712 const int dc= ( src[-stride] + src[1-stride] + src[2-stride] + src[3-stride] + 2) >>2;
1713
1714 ((uint32_t*)(src+0*stride))[0]=
1715 ((uint32_t*)(src+1*stride))[0]=
1716 ((uint32_t*)(src+2*stride))[0]=
1717 ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101;
1718}
1719
1720static void pred4x4_128_dc_c(uint8_t *src, uint8_t *topright, int stride){
1721 ((uint32_t*)(src+0*stride))[0]=
1722 ((uint32_t*)(src+1*stride))[0]=
1723 ((uint32_t*)(src+2*stride))[0]=
1724 ((uint32_t*)(src+3*stride))[0]= 128U*0x01010101U;
1725}
1726
1727
1728#define LOAD_TOP_RIGHT_EDGE\
1729 const int t4= topright[0];\
1730 const int t5= topright[1];\
1731 const int t6= topright[2];\
1732 const int t7= topright[3];\
1733
1734#define LOAD_LEFT_EDGE\
1735 const int l0= src[-1+0*stride];\
1736 const int l1= src[-1+1*stride];\
1737 const int l2= src[-1+2*stride];\
1738 const int l3= src[-1+3*stride];\
1739
1740#define LOAD_TOP_EDGE\
1741 const int t0= src[ 0-1*stride];\
1742 const int t1= src[ 1-1*stride];\
1743 const int t2= src[ 2-1*stride];\
1744 const int t3= src[ 3-1*stride];\
1745
1746static void pred4x4_down_right_c(uint8_t *src, uint8_t *topright, int stride){
1747 const int lt= src[-1-1*stride];
1748 LOAD_TOP_EDGE
1749 LOAD_LEFT_EDGE
1750
1751 src[0+3*stride]=(l3 + 2*l2 + l1 + 2)>>2;
1752 src[0+2*stride]=
1753 src[1+3*stride]=(l2 + 2*l1 + l0 + 2)>>2;
1754 src[0+1*stride]=
1755 src[1+2*stride]=
1756 src[2+3*stride]=(l1 + 2*l0 + lt + 2)>>2;
1757 src[0+0*stride]=
1758 src[1+1*stride]=
1759 src[2+2*stride]=
1760 src[3+3*stride]=(l0 + 2*lt + t0 + 2)>>2;
1761 src[1+0*stride]=
1762 src[2+1*stride]=
1763 src[3+2*stride]=(lt + 2*t0 + t1 + 2)>>2;
1764 src[2+0*stride]=
1765 src[3+1*stride]=(t0 + 2*t1 + t2 + 2)>>2;
1766 src[3+0*stride]=(t1 + 2*t2 + t3 + 2)>>2;
4cfbf61b 1767}
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MN
1768
1769static void pred4x4_down_left_c(uint8_t *src, uint8_t *topright, int stride){
1770 LOAD_TOP_EDGE
1771 LOAD_TOP_RIGHT_EDGE
1772// LOAD_LEFT_EDGE
1773
1774 src[0+0*stride]=(t0 + t2 + 2*t1 + 2)>>2;
1775 src[1+0*stride]=
1776 src[0+1*stride]=(t1 + t3 + 2*t2 + 2)>>2;
1777 src[2+0*stride]=
1778 src[1+1*stride]=
1779 src[0+2*stride]=(t2 + t4 + 2*t3 + 2)>>2;
1780 src[3+0*stride]=
1781 src[2+1*stride]=
1782 src[1+2*stride]=
1783 src[0+3*stride]=(t3 + t5 + 2*t4 + 2)>>2;
1784 src[3+1*stride]=
1785 src[2+2*stride]=
1786 src[1+3*stride]=(t4 + t6 + 2*t5 + 2)>>2;
1787 src[3+2*stride]=
1788 src[2+3*stride]=(t5 + t7 + 2*t6 + 2)>>2;
1789 src[3+3*stride]=(t6 + 3*t7 + 2)>>2;
4cfbf61b 1790}
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MN
1791
1792static void pred4x4_vertical_right_c(uint8_t *src, uint8_t *topright, int stride){
1793 const int lt= src[-1-1*stride];
1794 LOAD_TOP_EDGE
1795 LOAD_LEFT_EDGE
1796 const __attribute__((unused)) int unu= l3;
1797
1798 src[0+0*stride]=
1799 src[1+2*stride]=(lt + t0 + 1)>>1;
1800 src[1+0*stride]=
1801 src[2+2*stride]=(t0 + t1 + 1)>>1;
1802 src[2+0*stride]=
1803 src[3+2*stride]=(t1 + t2 + 1)>>1;
1804 src[3+0*stride]=(t2 + t3 + 1)>>1;
1805 src[0+1*stride]=
1806 src[1+3*stride]=(l0 + 2*lt + t0 + 2)>>2;
1807 src[1+1*stride]=
1808 src[2+3*stride]=(lt + 2*t0 + t1 + 2)>>2;
1809 src[2+1*stride]=
1810 src[3+3*stride]=(t0 + 2*t1 + t2 + 2)>>2;
1811 src[3+1*stride]=(t1 + 2*t2 + t3 + 2)>>2;
1812 src[0+2*stride]=(lt + 2*l0 + l1 + 2)>>2;
1813 src[0+3*stride]=(l0 + 2*l1 + l2 + 2)>>2;
4cfbf61b 1814}
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1815
1816static void pred4x4_vertical_left_c(uint8_t *src, uint8_t *topright, int stride){
1817 LOAD_TOP_EDGE
1818 LOAD_TOP_RIGHT_EDGE
1819 const __attribute__((unused)) int unu= t7;
1820
1821 src[0+0*stride]=(t0 + t1 + 1)>>1;
1822 src[1+0*stride]=
1823 src[0+2*stride]=(t1 + t2 + 1)>>1;
1824 src[2+0*stride]=
1825 src[1+2*stride]=(t2 + t3 + 1)>>1;
1826 src[3+0*stride]=
1827 src[2+2*stride]=(t3 + t4+ 1)>>1;
1828 src[3+2*stride]=(t4 + t5+ 1)>>1;
1829 src[0+1*stride]=(t0 + 2*t1 + t2 + 2)>>2;
1830 src[1+1*stride]=
1831 src[0+3*stride]=(t1 + 2*t2 + t3 + 2)>>2;
1832 src[2+1*stride]=
1833 src[1+3*stride]=(t2 + 2*t3 + t4 + 2)>>2;
1834 src[3+1*stride]=
1835 src[2+3*stride]=(t3 + 2*t4 + t5 + 2)>>2;
1836 src[3+3*stride]=(t4 + 2*t5 + t6 + 2)>>2;
4cfbf61b 1837}
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MN
1838
1839static void pred4x4_horizontal_up_c(uint8_t *src, uint8_t *topright, int stride){
1840 LOAD_LEFT_EDGE
1841
1842 src[0+0*stride]=(l0 + l1 + 1)>>1;
1843 src[1+0*stride]=(l0 + 2*l1 + l2 + 2)>>2;
1844 src[2+0*stride]=
1845 src[0+1*stride]=(l1 + l2 + 1)>>1;
1846 src[3+0*stride]=
1847 src[1+1*stride]=(l1 + 2*l2 + l3 + 2)>>2;
1848 src[2+1*stride]=
1849 src[0+2*stride]=(l2 + l3 + 1)>>1;
1850 src[3+1*stride]=
1851 src[1+2*stride]=(l2 + 2*l3 + l3 + 2)>>2;
1852 src[3+2*stride]=
1853 src[1+3*stride]=
1854 src[0+3*stride]=
1855 src[2+2*stride]=
1856 src[2+3*stride]=
1857 src[3+3*stride]=l3;
4cfbf61b 1858}
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MN
1859
1860static void pred4x4_horizontal_down_c(uint8_t *src, uint8_t *topright, int stride){
1861 const int lt= src[-1-1*stride];
1862 LOAD_TOP_EDGE
1863 LOAD_LEFT_EDGE
1864 const __attribute__((unused)) int unu= t3;
1865
1866 src[0+0*stride]=
1867 src[2+1*stride]=(lt + l0 + 1)>>1;
1868 src[1+0*stride]=
1869 src[3+1*stride]=(l0 + 2*lt + t0 + 2)>>2;
1870 src[2+0*stride]=(lt + 2*t0 + t1 + 2)>>2;
1871 src[3+0*stride]=(t0 + 2*t1 + t2 + 2)>>2;
1872 src[0+1*stride]=
1873 src[2+2*stride]=(l0 + l1 + 1)>>1;
1874 src[1+1*stride]=
1875 src[3+2*stride]=(lt + 2*l0 + l1 + 2)>>2;
1876 src[0+2*stride]=
1877 src[2+3*stride]=(l1 + l2+ 1)>>1;
1878 src[1+2*stride]=
1879 src[3+3*stride]=(l0 + 2*l1 + l2 + 2)>>2;
1880 src[0+3*stride]=(l2 + l3 + 1)>>1;
1881 src[1+3*stride]=(l1 + 2*l2 + l3 + 2)>>2;
4cfbf61b 1882}
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1883
1884static void pred16x16_vertical_c(uint8_t *src, int stride){
1885 int i;
1886 const uint32_t a= ((uint32_t*)(src-stride))[0];
1887 const uint32_t b= ((uint32_t*)(src-stride))[1];
1888 const uint32_t c= ((uint32_t*)(src-stride))[2];
1889 const uint32_t d= ((uint32_t*)(src-stride))[3];
1890
1891 for(i=0; i<16; i++){
1892 ((uint32_t*)(src+i*stride))[0]= a;
1893 ((uint32_t*)(src+i*stride))[1]= b;
1894 ((uint32_t*)(src+i*stride))[2]= c;
1895 ((uint32_t*)(src+i*stride))[3]= d;
1896 }
1897}
1898
1899static void pred16x16_horizontal_c(uint8_t *src, int stride){
1900 int i;
1901
1902 for(i=0; i<16; i++){
1903 ((uint32_t*)(src+i*stride))[0]=
1904 ((uint32_t*)(src+i*stride))[1]=
1905 ((uint32_t*)(src+i*stride))[2]=
1906 ((uint32_t*)(src+i*stride))[3]= src[-1+i*stride]*0x01010101;
1907 }
1908}
1909
1910static void pred16x16_dc_c(uint8_t *src, int stride){
1911 int i, dc=0;
1912
1913 for(i=0;i<16; i++){
1914 dc+= src[-1+i*stride];
1915 }
1916
1917 for(i=0;i<16; i++){
1918 dc+= src[i-stride];
1919 }
1920
1921 dc= 0x01010101*((dc + 16)>>5);
1922
1923 for(i=0; i<16; i++){
1924 ((uint32_t*)(src+i*stride))[0]=
1925 ((uint32_t*)(src+i*stride))[1]=
1926 ((uint32_t*)(src+i*stride))[2]=
1927 ((uint32_t*)(src+i*stride))[3]= dc;
1928 }
1929}
1930
1931static void pred16x16_left_dc_c(uint8_t *src, int stride){
1932 int i, dc=0;
1933
1934 for(i=0;i<16; i++){
1935 dc+= src[-1+i*stride];
1936 }
1937
1938 dc= 0x01010101*((dc + 8)>>4);
1939
1940 for(i=0; i<16; i++){
1941 ((uint32_t*)(src+i*stride))[0]=
1942 ((uint32_t*)(src+i*stride))[1]=
1943 ((uint32_t*)(src+i*stride))[2]=
1944 ((uint32_t*)(src+i*stride))[3]= dc;
1945 }
1946}
1947
1948static void pred16x16_top_dc_c(uint8_t *src, int stride){
1949 int i, dc=0;
1950
1951 for(i=0;i<16; i++){
1952 dc+= src[i-stride];
1953 }
1954 dc= 0x01010101*((dc + 8)>>4);
1955
1956 for(i=0; i<16; i++){
1957 ((uint32_t*)(src+i*stride))[0]=
1958 ((uint32_t*)(src+i*stride))[1]=
1959 ((uint32_t*)(src+i*stride))[2]=
1960 ((uint32_t*)(src+i*stride))[3]= dc;
1961 }
1962}
1963
1964static void pred16x16_128_dc_c(uint8_t *src, int stride){
1965 int i;
1966
1967 for(i=0; i<16; i++){
1968 ((uint32_t*)(src+i*stride))[0]=
1969 ((uint32_t*)(src+i*stride))[1]=
1970 ((uint32_t*)(src+i*stride))[2]=
1971 ((uint32_t*)(src+i*stride))[3]= 0x01010101U*128U;
1972 }
1973}
1974
8b82a956 1975static inline void pred16x16_plane_compat_c(uint8_t *src, int stride, const int svq3){
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1976 int i, j, k;
1977 int a;
1978 uint8_t *cm = cropTbl + MAX_NEG_CROP;
1979 const uint8_t * const src0 = src+7-stride;
1980 const uint8_t *src1 = src+8*stride-1;
1981 const uint8_t *src2 = src1-2*stride; // == src+6*stride-1;
1982 int H = src0[1] - src0[-1];
1983 int V = src1[0] - src2[ 0];
1984 for(k=2; k<=8; ++k) {
1985 src1 += stride; src2 -= stride;
1986 H += k*(src0[k] - src0[-k]);
1987 V += k*(src1[0] - src2[ 0]);
1988 }
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1989 if(svq3){
1990 H = ( 5*(H/4) ) / 16;
1991 V = ( 5*(V/4) ) / 16;
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MM
1992
1993 /* required for 100% accuracy */
1994 i = H; H = V; V = i;
8b82a956
MN
1995 }else{
1996 H = ( 5*H+32 ) >> 6;
1997 V = ( 5*V+32 ) >> 6;
1998 }
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1999
2000 a = 16*(src1[0] + src2[16] + 1) - 7*(V+H);
2001 for(j=16; j>0; --j) {
2002 int b = a;
2003 a += V;
2004 for(i=-16; i<0; i+=4) {
2005 src[16+i] = cm[ (b ) >> 5 ];
2006 src[17+i] = cm[ (b+ H) >> 5 ];
2007 src[18+i] = cm[ (b+2*H) >> 5 ];
2008 src[19+i] = cm[ (b+3*H) >> 5 ];
2009 b += 4*H;
0da71265 2010 }
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2011 src += stride;
2012 }
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2013}
2014
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2015static void pred16x16_plane_c(uint8_t *src, int stride){
2016 pred16x16_plane_compat_c(src, stride, 0);
2017}
2018
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2019static void pred8x8_vertical_c(uint8_t *src, int stride){
2020 int i;
2021 const uint32_t a= ((uint32_t*)(src-stride))[0];
2022 const uint32_t b= ((uint32_t*)(src-stride))[1];
2023
2024 for(i=0; i<8; i++){
2025 ((uint32_t*)(src+i*stride))[0]= a;
2026 ((uint32_t*)(src+i*stride))[1]= b;
2027 }
2028}
2029
2030static void pred8x8_horizontal_c(uint8_t *src, int stride){
2031 int i;
2032
2033 for(i=0; i<8; i++){
2034 ((uint32_t*)(src+i*stride))[0]=
2035 ((uint32_t*)(src+i*stride))[1]= src[-1+i*stride]*0x01010101;
2036 }
2037}
2038
2039static void pred8x8_128_dc_c(uint8_t *src, int stride){
2040 int i;
2041
2042 for(i=0; i<4; i++){
2043 ((uint32_t*)(src+i*stride))[0]=
2044 ((uint32_t*)(src+i*stride))[1]= 0x01010101U*128U;
2045 }
2046 for(i=4; i<8; i++){
2047 ((uint32_t*)(src+i*stride))[0]=
2048 ((uint32_t*)(src+i*stride))[1]= 0x01010101U*128U;
2049 }
2050}
2051
2052static void pred8x8_left_dc_c(uint8_t *src, int stride){
2053 int i;
2054 int dc0, dc2;
2055
2056 dc0=dc2=0;
2057 for(i=0;i<4; i++){
2058 dc0+= src[-1+i*stride];
2059 dc2+= src[-1+(i+4)*stride];
2060 }
2061 dc0= 0x01010101*((dc0 + 2)>>2);
2062 dc2= 0x01010101*((dc2 + 2)>>2);
2063
2064 for(i=0; i<4; i++){
2065 ((uint32_t*)(src+i*stride))[0]=
2066 ((uint32_t*)(src+i*stride))[1]= dc0;
2067 }
2068 for(i=4; i<8; i++){
2069 ((uint32_t*)(src+i*stride))[0]=
2070 ((uint32_t*)(src+i*stride))[1]= dc2;
2071 }
2072}
2073
2074static void pred8x8_top_dc_c(uint8_t *src, int stride){
2075 int i;
2076 int dc0, dc1;
2077
2078 dc0=dc1=0;
2079 for(i=0;i<4; i++){
2080 dc0+= src[i-stride];
2081 dc1+= src[4+i-stride];
2082 }
2083 dc0= 0x01010101*((dc0 + 2)>>2);
2084 dc1= 0x01010101*((dc1 + 2)>>2);
2085
2086 for(i=0; i<4; i++){
2087 ((uint32_t*)(src+i*stride))[0]= dc0;
2088 ((uint32_t*)(src+i*stride))[1]= dc1;
2089 }
2090 for(i=4; i<8; i++){
2091 ((uint32_t*)(src+i*stride))[0]= dc0;
2092 ((uint32_t*)(src+i*stride))[1]= dc1;
2093 }
2094}
2095
2096
2097static void pred8x8_dc_c(uint8_t *src, int stride){
2098 int i;
2099 int dc0, dc1, dc2, dc3;
2100
2101 dc0=dc1=dc2=0;
2102 for(i=0;i<4; i++){
2103 dc0+= src[-1+i*stride] + src[i-stride];
2104 dc1+= src[4+i-stride];
2105 dc2+= src[-1+(i+4)*stride];
2106 }
2107 dc3= 0x01010101*((dc1 + dc2 + 4)>>3);
2108 dc0= 0x01010101*((dc0 + 4)>>3);
2109 dc1= 0x01010101*((dc1 + 2)>>2);
2110 dc2= 0x01010101*((dc2 + 2)>>2);
2111
2112 for(i=0; i<4; i++){
2113 ((uint32_t*)(src+i*stride))[0]= dc0;
2114 ((uint32_t*)(src+i*stride))[1]= dc1;
2115 }
2116 for(i=4; i<8; i++){
2117 ((uint32_t*)(src+i*stride))[0]= dc2;
2118 ((uint32_t*)(src+i*stride))[1]= dc3;
2119 }
2120}
2121
2122static void pred8x8_plane_c(uint8_t *src, int stride){
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MN
2123 int j, k;
2124 int a;
2125 uint8_t *cm = cropTbl + MAX_NEG_CROP;
2126 const uint8_t * const src0 = src+3-stride;
2127 const uint8_t *src1 = src+4*stride-1;
2128 const uint8_t *src2 = src1-2*stride; // == src+2*stride-1;
2129 int H = src0[1] - src0[-1];
2130 int V = src1[0] - src2[ 0];
2131 for(k=2; k<=4; ++k) {
2132 src1 += stride; src2 -= stride;
2133 H += k*(src0[k] - src0[-k]);
2134 V += k*(src1[0] - src2[ 0]);
2135 }
2136 H = ( 17*H+16 ) >> 5;
2137 V = ( 17*V+16 ) >> 5;
2138
2139 a = 16*(src1[0] + src2[8]+1) - 3*(V+H);
2140 for(j=8; j>0; --j) {
2141 int b = a;
2142 a += V;
2143 src[0] = cm[ (b ) >> 5 ];
2144 src[1] = cm[ (b+ H) >> 5 ];
2145 src[2] = cm[ (b+2*H) >> 5 ];
2146 src[3] = cm[ (b+3*H) >> 5 ];
2147 src[4] = cm[ (b+4*H) >> 5 ];
2148 src[5] = cm[ (b+5*H) >> 5 ];
2149 src[6] = cm[ (b+6*H) >> 5 ];
2150 src[7] = cm[ (b+7*H) >> 5 ];
2151 src += stride;
2152 }
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2153}
2154
2155static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
2156 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
2157 int src_x_offset, int src_y_offset,
2158 qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
2159 MpegEncContext * const s = &h->s;
2160 const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
2161 const int my= h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
2162 const int luma_xy= (mx&3) + ((my&3)<<2);
2163 uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*s->linesize;
2164 uint8_t * src_cb= pic->data[1] + (mx>>3) + (my>>3)*s->uvlinesize;
2165 uint8_t * src_cr= pic->data[2] + (mx>>3) + (my>>3)*s->uvlinesize;
2166 int extra_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16; //FIXME increase edge?, IMHO not worth it
2167 int extra_height= extra_width;
2168 int emu=0;
2169 const int full_mx= mx>>2;
2170 const int full_my= my>>2;
2171
2172 assert(pic->data[0]);
2173
2174 if(mx&7) extra_width -= 3;
2175 if(my&7) extra_height -= 3;
2176
2177 if( full_mx < 0-extra_width
2178 || full_my < 0-extra_height
2179 || full_mx + 16/*FIXME*/ > s->width + extra_width
2180 || full_my + 16/*FIXME*/ > s->height + extra_height){
c009df3f 2181 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
2182 src_y= s->edge_emu_buffer + 2 + 2*s->linesize;
2183 emu=1;
2184 }
2185
2186 qpix_op[luma_xy](dest_y, src_y, s->linesize); //FIXME try variable height perhaps?
2187 if(!square){
2188 qpix_op[luma_xy](dest_y + delta, src_y + delta, s->linesize);
2189 }
2190
2191 if(s->flags&CODEC_FLAG_GRAY) return;
2192
2193 if(emu){
c009df3f 2194 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
2195 src_cb= s->edge_emu_buffer;
2196 }
2197 chroma_op(dest_cb, src_cb, s->uvlinesize, chroma_height, mx&7, my&7);
2198
2199 if(emu){
c009df3f 2200 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
2201 src_cr= s->edge_emu_buffer;
2202 }
2203 chroma_op(dest_cr, src_cr, s->uvlinesize, chroma_height, mx&7, my&7);
2204}
2205
2206static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
2207 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
2208 int x_offset, int y_offset,
2209 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
2210 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
2211 int list0, int list1){
2212 MpegEncContext * const s = &h->s;
2213 qpel_mc_func *qpix_op= qpix_put;
2214 h264_chroma_mc_func chroma_op= chroma_put;
2215
2216 dest_y += 2*x_offset + 2*y_offset*s-> linesize;
2217 dest_cb += x_offset + y_offset*s->uvlinesize;
2218 dest_cr += x_offset + y_offset*s->uvlinesize;
2219 x_offset += 8*s->mb_x;
2220 y_offset += 8*s->mb_y;
2221
2222 if(list0){
1924f3ce 2223 Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
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MN
2224 mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
2225 dest_y, dest_cb, dest_cr, x_offset, y_offset,
2226 qpix_op, chroma_op);
2227
2228 qpix_op= qpix_avg;
2229 chroma_op= chroma_avg;
2230 }
2231
2232 if(list1){
1924f3ce 2233 Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
0da71265
MN
2234 mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
2235 dest_y, dest_cb, dest_cr, x_offset, y_offset,
2236 qpix_op, chroma_op);
2237 }
2238}
2239
2240static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
2241 qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
2242 qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg)){
2243 MpegEncContext * const s = &h->s;
7bc9090a 2244 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
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MN
2245 const int mb_type= s->current_picture.mb_type[mb_xy];
2246
2247 assert(IS_INTER(mb_type));
2248
2249 if(IS_16X16(mb_type)){
2250 mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
2251 qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
2252 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
2253 }else if(IS_16X8(mb_type)){
2254 mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
2255 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
2256 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
2257 mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
2258 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
2259 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
2260 }else if(IS_8X16(mb_type)){
2261 mc_part(h, 0, 0, 8, 8*s->linesize, dest_y, dest_cb, dest_cr, 0, 0,
2262 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
2263 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
2264 mc_part(h, 4, 0, 8, 8*s->linesize, dest_y, dest_cb, dest_cr, 4, 0,
2265 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
2266 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
2267 }else{
2268 int i;
2269
2270 assert(IS_8X8(mb_type));
2271
2272 for(i=0; i<4; i++){
2273 const int sub_mb_type= h->sub_mb_type[i];
2274 const int n= 4*i;
2275 int x_offset= (i&1)<<2;
2276 int y_offset= (i&2)<<1;
2277
2278 if(IS_SUB_8X8(sub_mb_type)){
2279 mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
2280 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
2281 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2282 }else if(IS_SUB_8X4(sub_mb_type)){
2283 mc_part(h, n , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
2284 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
2285 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2286 mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
2287 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
2288 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2289 }else if(IS_SUB_4X8(sub_mb_type)){
2290 mc_part(h, n , 0, 4, 4*s->linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
2291 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
2292 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2293 mc_part(h, n+1, 0, 4, 4*s->linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
2294 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
2295 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2296 }else{
2297 int j;
2298 assert(IS_SUB_4X4(sub_mb_type));
2299 for(j=0; j<4; j++){
2300 int sub_x_offset= x_offset + 2*(j&1);
2301 int sub_y_offset= y_offset + (j&2);
2302 mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
2303 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
2304 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
2305 }
2306 }
2307 }
2308 }
2309}
2310
2311static void decode_init_vlc(H264Context *h){
2312 static int done = 0;
2313
2314 if (!done) {
2315 int i;
2316 done = 1;
2317
2318 init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5,
2319 &chroma_dc_coeff_token_len [0], 1, 1,
073c2593 2320 &chroma_dc_coeff_token_bits[0], 1, 1, 1);
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MN
2321
2322 for(i=0; i<4; i++){
2323 init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17,
2324 &coeff_token_len [i][0], 1, 1,
073c2593 2325 &coeff_token_bits[i][0], 1, 1, 1);
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MN
2326 }
2327
2328 for(i=0; i<3; i++){
2329 init_vlc(&chroma_dc_total_zeros_vlc[i], CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4,
2330 &chroma_dc_total_zeros_len [i][0], 1, 1,
073c2593 2331 &chroma_dc_total_zeros_bits[i][0], 1, 1, 1);
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MN
2332 }
2333 for(i=0; i<15; i++){
2334 init_vlc(&total_zeros_vlc[i], TOTAL_ZEROS_VLC_BITS, 16,
2335 &total_zeros_len [i][0], 1, 1,
073c2593 2336 &total_zeros_bits[i][0], 1, 1, 1);
0da71265
MN
2337 }
2338
2339 for(i=0; i<6; i++){
2340 init_vlc(&run_vlc[i], RUN_VLC_BITS, 7,
2341 &run_len [i][0], 1, 1,
073c2593 2342 &run_bits[i][0], 1, 1, 1);
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MN
2343 }
2344 init_vlc(&run7_vlc, RUN7_VLC_BITS, 16,
2345 &run_len [6][0], 1, 1,
073c2593 2346 &run_bits[6][0], 1, 1, 1);
0da71265
MN
2347 }
2348}
2349
2350/**
2351 * Sets the intra prediction function pointers.
2352 */
2353static void init_pred_ptrs(H264Context *h){
2354// MpegEncContext * const s = &h->s;
2355
2356 h->pred4x4[VERT_PRED ]= pred4x4_vertical_c;
2357 h->pred4x4[HOR_PRED ]= pred4x4_horizontal_c;
2358 h->pred4x4[DC_PRED ]= pred4x4_dc_c;
2359 h->pred4x4[DIAG_DOWN_LEFT_PRED ]= pred4x4_down_left_c;
2360 h->pred4x4[DIAG_DOWN_RIGHT_PRED]= pred4x4_down_right_c;
2361 h->pred4x4[VERT_RIGHT_PRED ]= pred4x4_vertical_right_c;
2362 h->pred4x4[HOR_DOWN_PRED ]= pred4x4_horizontal_down_c;
2363 h->pred4x4[VERT_LEFT_PRED ]= pred4x4_vertical_left_c;
2364 h->pred4x4[HOR_UP_PRED ]= pred4x4_horizontal_up_c;
2365 h->pred4x4[LEFT_DC_PRED ]= pred4x4_left_dc_c;
2366 h->pred4x4[TOP_DC_PRED ]= pred4x4_top_dc_c;
2367 h->pred4x4[DC_128_PRED ]= pred4x4_128_dc_c;
2368
2369 h->pred8x8[DC_PRED8x8 ]= pred8x8_dc_c;
2370 h->pred8x8[VERT_PRED8x8 ]= pred8x8_vertical_c;
2371 h->pred8x8[HOR_PRED8x8 ]= pred8x8_horizontal_c;
2372 h->pred8x8[PLANE_PRED8x8 ]= pred8x8_plane_c;
2373 h->pred8x8[LEFT_DC_PRED8x8]= pred8x8_left_dc_c;
2374 h->pred8x8[TOP_DC_PRED8x8 ]= pred8x8_top_dc_c;
2375 h->pred8x8[DC_128_PRED8x8 ]= pred8x8_128_dc_c;
2376
2377 h->pred16x16[DC_PRED8x8 ]= pred16x16_dc_c;
2378 h->pred16x16[VERT_PRED8x8 ]= pred16x16_vertical_c;
2379 h->pred16x16[HOR_PRED8x8 ]= pred16x16_horizontal_c;
2380 h->pred16x16[PLANE_PRED8x8 ]= pred16x16_plane_c;
2381 h->pred16x16[LEFT_DC_PRED8x8]= pred16x16_left_dc_c;
2382 h->pred16x16[TOP_DC_PRED8x8 ]= pred16x16_top_dc_c;
2383 h->pred16x16[DC_128_PRED8x8 ]= pred16x16_128_dc_c;
2384}
2385
0da71265 2386static void free_tables(H264Context *h){
0da71265 2387 av_freep(&h->intra4x4_pred_mode);
e5017ab8
LA
2388 av_freep(&h->chroma_pred_mode_table);
2389 av_freep(&h->cbp_table);
9e528114
LA
2390 av_freep(&h->mvd_table[0]);
2391 av_freep(&h->mvd_table[1]);
5ad984c9 2392 av_freep(&h->direct_table);
0da71265
MN
2393 av_freep(&h->non_zero_count);
2394 av_freep(&h->slice_table_base);
53c05b1e 2395 av_freep(&h->top_border);
0da71265 2396 h->slice_table= NULL;
e5017ab8 2397
0da71265
MN
2398 av_freep(&h->mb2b_xy);
2399 av_freep(&h->mb2b8_xy);
2400}
2401
2402/**
2403 * allocates tables.
2404 * needs widzh/height
2405 */
2406static int alloc_tables(H264Context *h){
2407 MpegEncContext * const s = &h->s;
7bc9090a 2408 const int big_mb_num= s->mb_stride * (s->mb_height+1);
0da71265
MN
2409 int x,y;
2410
2411 CHECKED_ALLOCZ(h->intra4x4_pred_mode, big_mb_num * 8 * sizeof(uint8_t))
e5017ab8 2412
53c05b1e 2413 CHECKED_ALLOCZ(h->non_zero_count , big_mb_num * 16 * sizeof(uint8_t))
0da71265 2414 CHECKED_ALLOCZ(h->slice_table_base , big_mb_num * sizeof(uint8_t))
53c05b1e 2415 CHECKED_ALLOCZ(h->top_border , s->mb_width * (16+8+8) * sizeof(uint8_t))
5d0e4cb8 2416 CHECKED_ALLOCZ(h->cbp_table, big_mb_num * sizeof(uint16_t))
0da71265 2417
e5017ab8
LA
2418 if( h->pps.cabac ) {
2419 CHECKED_ALLOCZ(h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t))
9e528114
LA
2420 CHECKED_ALLOCZ(h->mvd_table[0], 32*big_mb_num * sizeof(uint16_t));
2421 CHECKED_ALLOCZ(h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t));
5ad984c9 2422 CHECKED_ALLOCZ(h->direct_table, 32*big_mb_num * sizeof(uint8_t));
e5017ab8
LA
2423 }
2424
0da71265 2425 memset(h->slice_table_base, -1, big_mb_num * sizeof(uint8_t));
7bc9090a 2426 h->slice_table= h->slice_table_base + s->mb_stride + 1;
0da71265
MN
2427
2428 CHECKED_ALLOCZ(h->mb2b_xy , big_mb_num * sizeof(uint16_t));
2429 CHECKED_ALLOCZ(h->mb2b8_xy , big_mb_num * sizeof(uint16_t));
2430 for(y=0; y<s->mb_height; y++){
2431 for(x=0; x<s->mb_width; x++){
7bc9090a 2432 const int mb_xy= x + y*s->mb_stride;
0da71265
MN
2433 const int b_xy = 4*x + 4*y*h->b_stride;
2434 const int b8_xy= 2*x + 2*y*h->b8_stride;
2435
2436 h->mb2b_xy [mb_xy]= b_xy;
2437 h->mb2b8_xy[mb_xy]= b8_xy;
2438 }
2439 }
2440
2441 return 0;
2442fail:
2443 free_tables(h);
2444 return -1;
2445}
2446
2447static void common_init(H264Context *h){
2448 MpegEncContext * const s = &h->s;
0da71265
MN
2449
2450 s->width = s->avctx->width;
2451 s->height = s->avctx->height;
2452 s->codec_id= s->avctx->codec->id;
2453
2454 init_pred_ptrs(h);
2455
9a41c2c7 2456 s->unrestricted_mv=1;
0da71265
MN
2457 s->decode=1; //FIXME
2458}
2459
2460static int decode_init(AVCodecContext *avctx){
2461 H264Context *h= avctx->priv_data;
2462 MpegEncContext * const s = &h->s;
2463
3edcacde
MN
2464 MPV_decode_defaults(s);
2465
0da71265
MN
2466 s->avctx = avctx;
2467 common_init(h);
2468
2469 s->out_format = FMT_H264;
2470 s->workaround_bugs= avctx->workaround_bugs;
2471
2472 // set defaults
0da71265
MN
2473// s->decode_mb= ff_h263_decode_mb;
2474 s->low_delay= 1;
2475 avctx->pix_fmt= PIX_FMT_YUV420P;
2476
2477 decode_init_vlc(h);
2478
bf835aee 2479 if(avctx->codec_tag != 0x31637661 && avctx->codec_tag != 0x31435641) // avc1
4770b1b4
RT
2480 h->is_avc = 0;
2481 else {
2482 if((avctx->extradata_size == 0) || (avctx->extradata == NULL)) {
2483 av_log(avctx, AV_LOG_ERROR, "AVC codec requires avcC data\n");
2484 return -1;
2485 }
2486 h->is_avc = 1;
2487 h->got_avcC = 0;
2488 }
2489
0da71265
MN
2490 return 0;
2491}
2492
2493static void frame_start(H264Context *h){
2494 MpegEncContext * const s = &h->s;
2495 int i;
2496
2497 MPV_frame_start(s, s->avctx);
2498 ff_er_frame_start(s);
17bfbd70 2499 h->mmco_index=0;
0da71265
MN
2500
2501 assert(s->linesize && s->uvlinesize);
2502
2503 for(i=0; i<16; i++){
2504 h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
2505 h->chroma_subblock_offset[i]= 2*((scan8[i] - scan8[0])&7) + 2*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2506 }
2507 for(i=0; i<4; i++){
2508 h->block_offset[16+i]=
2509 h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2510 }
2511
2512// s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
2513}
2514
53c05b1e
MN
2515static inline void backup_mb_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize){
2516 MpegEncContext * const s = &h->s;
2517 int i;
2518
2519 src_y -= linesize;
2520 src_cb -= uvlinesize;
2521 src_cr -= uvlinesize;
2522
2523 h->left_border[0]= h->top_border[s->mb_x][15];
2524 for(i=1; i<17; i++){
2525 h->left_border[i]= src_y[15+i* linesize];
2526 }
2527
2528 *(uint64_t*)(h->top_border[s->mb_x]+0)= *(uint64_t*)(src_y + 16*linesize);
2529 *(uint64_t*)(h->top_border[s->mb_x]+8)= *(uint64_t*)(src_y +8+16*linesize);
2530
2531 if(!(s->flags&CODEC_FLAG_GRAY)){
2532 h->left_border[17 ]= h->top_border[s->mb_x][16+7];
2533 h->left_border[17+9]= h->top_border[s->mb_x][24+7];
2534 for(i=1; i<9; i++){
2535 h->left_border[i+17 ]= src_cb[7+i*uvlinesize];
2536 h->left_border[i+17+9]= src_cr[7+i*uvlinesize];
2537 }
2538 *(uint64_t*)(h->top_border[s->mb_x]+16)= *(uint64_t*)(src_cb+8*uvlinesize);
2539 *(uint64_t*)(h->top_border[s->mb_x]+24)= *(uint64_t*)(src_cr+8*uvlinesize);
2540 }
2541}
2542
2543static 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){
2544 MpegEncContext * const s = &h->s;
2545 int temp8, i;
2546 uint64_t temp64;
d89dc06a
LM
2547 int deblock_left = (s->mb_x > 0);
2548 int deblock_top = (s->mb_y > 0);
53c05b1e
MN
2549
2550 src_y -= linesize + 1;
2551 src_cb -= uvlinesize + 1;
2552 src_cr -= uvlinesize + 1;
2553
2554#define XCHG(a,b,t,xchg)\
2555t= a;\
2556if(xchg)\
2557 a= b;\
2558b= t;
d89dc06a
LM
2559
2560 if(deblock_left){
2561 for(i = !deblock_top; i<17; i++){
2562 XCHG(h->left_border[i ], src_y [i* linesize], temp8, xchg);
2563 }
2564 }
2565
2566 if(deblock_top){
2567 XCHG(*(uint64_t*)(h->top_border[s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg);
2568 XCHG(*(uint64_t*)(h->top_border[s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1);
53c05b1e 2569 }
53c05b1e
MN
2570
2571 if(!(s->flags&CODEC_FLAG_GRAY)){
d89dc06a
LM
2572 if(deblock_left){
2573 for(i = !deblock_top; i<9; i++){
2574 XCHG(h->left_border[i+17 ], src_cb[i*uvlinesize], temp8, xchg);
2575 XCHG(h->left_border[i+17+9], src_cr[i*uvlinesize], temp8, xchg);
2576 }
2577 }
2578 if(deblock_top){
2579 XCHG(*(uint64_t*)(h->top_border[s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1);
2580 XCHG(*(uint64_t*)(h->top_border[s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1);
53c05b1e 2581 }
53c05b1e
MN
2582 }
2583}
2584
0da71265
MN
2585static void hl_decode_mb(H264Context *h){
2586 MpegEncContext * const s = &h->s;
2587 const int mb_x= s->mb_x;
2588 const int mb_y= s->mb_y;
7bc9090a 2589 const int mb_xy= mb_x + mb_y*s->mb_stride;
0da71265
MN
2590 const int mb_type= s->current_picture.mb_type[mb_xy];
2591 uint8_t *dest_y, *dest_cb, *dest_cr;
2592 int linesize, uvlinesize /*dct_offset*/;
2593 int i;
2594
2595 if(!s->decode)
2596 return;
2597
2598 if(s->mb_skiped){
2599 }
2600
2601 dest_y = s->current_picture.data[0] + (mb_y * 16* s->linesize ) + mb_x * 16;
2602 dest_cb = s->current_picture.data[1] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2603 dest_cr = s->current_picture.data[2] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2604
2605 if (h->mb_field_decoding_flag) {
2606 linesize = s->linesize * 2;
2607 uvlinesize = s->uvlinesize * 2;
2608 if(mb_y&1){ //FIXME move out of this func?
2609 dest_y -= s->linesize*15;
2610 dest_cb-= s->linesize*7;
2611 dest_cr-= s->linesize*7;
2612 }
2613 } else {
2614 linesize = s->linesize;
2615 uvlinesize = s->uvlinesize;
2616// dct_offset = s->linesize * 16;
2617 }
2618
2619 if(IS_INTRA(mb_type)){
53c05b1e
MN
2620 if(h->deblocking_filter)
2621 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1);
2622
0da71265
MN
2623 if(!(s->flags&CODEC_FLAG_GRAY)){
2624 h->pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
2625 h->pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
2626 }
2627
2628 if(IS_INTRA4x4(mb_type)){
2629 if(!s->encoding){
2630 for(i=0; i<16; i++){
2631 uint8_t * const ptr= dest_y + h->block_offset[i];
a9799653 2632 uint8_t *topright;
0da71265
MN
2633 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2634 int tr;
2635
a9799653
MN
2636 if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
2637 const int topright_avail= (h->topright_samples_available<<i)&0x8000;
2638 assert(mb_y || linesize <= h->block_offset[i]);
2639 if(!topright_avail){
2640 tr= ptr[3 - linesize]*0x01010101;
2641 topright= (uint8_t*) &tr;
2642 }else if(i==5 && h->deblocking_filter){
2643 tr= *(uint32_t*)h->top_border[mb_x+1];
2644 topright= (uint8_t*) &tr;
2645 }else
2646 topright= ptr + 4 - linesize;
2647 }else
2648 topright= NULL;
0da71265
MN
2649
2650 h->pred4x4[ dir ](ptr, topright, linesize);
8b82a956
MN
2651 if(h->non_zero_count_cache[ scan8[i] ]){
2652 if(s->codec_id == CODEC_ID_H264)
0fa8158d 2653 s->dsp.h264_idct_add(ptr, h->mb + i*16, linesize);
8b82a956
MN
2654 else
2655 svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
2656 }
0da71265
MN
2657 }
2658 }
2659 }else{
2660 h->pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
8b82a956
MN
2661 if(s->codec_id == CODEC_ID_H264)
2662 h264_luma_dc_dequant_idct_c(h->mb, s->qscale);
2663 else
2664 svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
0da71265 2665 }
53c05b1e
MN
2666 if(h->deblocking_filter)
2667 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0);
8b82a956 2668 }else if(s->codec_id == CODEC_ID_H264){
0da71265
MN
2669 hl_motion(h, dest_y, dest_cb, dest_cr,
2670 s->dsp.put_h264_qpel_pixels_tab, s->dsp.put_h264_chroma_pixels_tab,
2671 s->dsp.avg_h264_qpel_pixels_tab, s->dsp.avg_h264_chroma_pixels_tab);
2672 }
2673
2674
2675 if(!IS_INTRA4x4(mb_type)){
4704097a
MN
2676 if(s->codec_id == CODEC_ID_H264){
2677 for(i=0; i<16; i++){
2678 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
2679 uint8_t * const ptr= dest_y + h->block_offset[i];
0fa8158d 2680 s->dsp.h264_idct_add(ptr, h->mb + i*16, linesize);
4704097a
MN
2681 }
2682 }
2683 }else{
2684 for(i=0; i<16; i++){
2685 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
2686 uint8_t * const ptr= dest_y + h->block_offset[i];
8b82a956 2687 svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
4704097a 2688 }
0da71265
MN
2689 }
2690 }
2691 }
2692
2693 if(!(s->flags&CODEC_FLAG_GRAY)){
2694 chroma_dc_dequant_idct_c(h->mb + 16*16, h->chroma_qp);
2695 chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp);
4704097a
MN
2696 if(s->codec_id == CODEC_ID_H264){
2697 for(i=16; i<16+4; i++){
2698 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2699 uint8_t * const ptr= dest_cb + h->block_offset[i];
0fa8158d 2700 s->dsp.h264_idct_add(ptr, h->mb + i*16, uvlinesize);
4704097a 2701 }
0da71265 2702 }
4704097a
MN
2703 for(i=20; i<20+4; i++){
2704 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2705 uint8_t * const ptr= dest_cr + h->block_offset[i];
0fa8158d 2706 s->dsp.h264_idct_add(ptr, h->mb + i*16, uvlinesize);
4704097a
MN
2707 }
2708 }
2709 }else{
2710 for(i=16; i<16+4; i++){
2711 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2712 uint8_t * const ptr= dest_cb + h->block_offset[i];
8b82a956 2713 svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
4704097a
MN
2714 }
2715 }
2716 for(i=20; i<20+4; i++){
2717 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2718 uint8_t * const ptr= dest_cr + h->block_offset[i];
2719 svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
2720 }
0da71265
MN
2721 }
2722 }
2723 }
53c05b1e
MN
2724 if(h->deblocking_filter) {
2725 backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2726 filter_mb(h, mb_x, mb_y, dest_y, dest_cb, dest_cr);
2727 }
0da71265
MN
2728}
2729
0da71265
MN
2730/**
2731 * fills the default_ref_list.
2732 */
2733static int fill_default_ref_list(H264Context *h){
2734 MpegEncContext * const s = &h->s;
2735 int i;
2736 Picture sorted_short_ref[16];
2737
2738 if(h->slice_type==B_TYPE){
2739 int out_i;
2740 int limit= -1;
2741
2742 for(out_i=0; out_i<h->short_ref_count; out_i++){
2743 int best_i=-1;
792bb815 2744 int best_poc=INT_MAX;
0da71265
MN
2745
2746 for(i=0; i<h->short_ref_count; i++){
2747 const int poc= h->short_ref[i]->poc;
2748 if(poc > limit && poc < best_poc){
2749 best_poc= poc;
2750 best_i= i;
2751 }
2752 }
2753
2754 assert(best_i != -1);
2755
2756 limit= best_poc;
2757 sorted_short_ref[out_i]= *h->short_ref[best_i];
2758 }
2759 }
2760
2761 if(s->picture_structure == PICT_FRAME){
2762 if(h->slice_type==B_TYPE){
2763 const int current_poc= s->current_picture_ptr->poc;
2764 int list;
2765
2766 for(list=0; list<2; list++){
2767 int index=0;
2768
2769 for(i=0; i<h->short_ref_count && index < h->ref_count[list]; i++){
5ad984c9 2770 const int i2= list ? i : h->short_ref_count - i - 1;
0da71265
MN
2771 const int poc= sorted_short_ref[i2].poc;
2772
2773 if(sorted_short_ref[i2].reference != 3) continue; //FIXME refernce field shit
2774
2775 if((list==1 && poc > current_poc) || (list==0 && poc < current_poc)){
2776 h->default_ref_list[list][index ]= sorted_short_ref[i2];
2777 h->default_ref_list[list][index++].pic_id= sorted_short_ref[i2].frame_num;
2778 }
2779 }
2780
2781 for(i=0; i<h->long_ref_count && index < h->ref_count[ list ]; i++){
2782 if(h->long_ref[i]->reference != 3) continue;
2783
2784 h->default_ref_list[ list ][index ]= *h->long_ref[i];
2785 h->default_ref_list[ list ][index++].pic_id= i;;
2786 }
2787
2788 if(h->long_ref_count > 1 && h->short_ref_count==0){
2789 Picture temp= h->default_ref_list[1][0];
2790 h->default_ref_list[1][0] = h->default_ref_list[1][1];
2791 h->default_ref_list[1][0] = temp;
2792 }
2793
2794 if(index < h->ref_count[ list ])
2795 memset(&h->default_ref_list[list][index], 0, sizeof(Picture)*(h->ref_count[ list ] - index));
2796 }
2797 }else{
2798 int index=0;
2799 for(i=0; i<h->short_ref_count && index < h->ref_count[0]; i++){
2800 if(h->short_ref[i]->reference != 3) continue; //FIXME refernce field shit
2801 h->default_ref_list[0][index ]= *h->short_ref[i];
2802 h->default_ref_list[0][index++].pic_id= h->short_ref[i]->frame_num;
2803 }
2804 for(i=0; i<h->long_ref_count && index < h->ref_count[0]; i++){
2805 if(h->long_ref[i]->reference != 3) continue;
2806 h->default_ref_list[0][index ]= *h->long_ref[i];
2807 h->default_ref_list[0][index++].pic_id= i;;
2808 }
2809 if(index < h->ref_count[0])
2810 memset(&h->default_ref_list[0][index], 0, sizeof(Picture)*(h->ref_count[0] - index));
2811 }
2812 }else{ //FIELD
2813 if(h->slice_type==B_TYPE){
2814 }else{
2815 //FIXME second field balh
2816 }
2817 }
2818 return 0;
2819}
2820
2821static int decode_ref_pic_list_reordering(H264Context *h){
2822 MpegEncContext * const s = &h->s;
2823 int list;
2824
2825 if(h->slice_type==I_TYPE || h->slice_type==SI_TYPE) return 0; //FIXME move beofre func
2826
2827 for(list=0; list<2; list++){
2828 memcpy(h->ref_list[list], h->default_ref_list[list], sizeof(Picture)*h->ref_count[list]);
2829
2830 if(get_bits1(&s->gb)){
2831 int pred= h->curr_pic_num;
2832 int index;
2833
2834 for(index=0; ; index++){
2835 int reordering_of_pic_nums_idc= get_ue_golomb(&s->gb);
2836 int pic_id;
2837 int i;
2838
0bc42cad
LM
2839 if(reordering_of_pic_nums_idc==3)
2840 break;
0da71265
MN
2841
2842 if(index >= h->ref_count[list]){
9b879566 2843 av_log(h->s.avctx, AV_LOG_ERROR, "reference count overflow\n");
0da71265
MN
2844 return -1;
2845 }
2846
2847 if(reordering_of_pic_nums_idc<3){
2848 if(reordering_of_pic_nums_idc<2){
2849 const int abs_diff_pic_num= get_ue_golomb(&s->gb) + 1;
2850
2851 if(abs_diff_pic_num >= h->max_pic_num){
9b879566 2852 av_log(h->s.avctx, AV_LOG_ERROR, "abs_diff_pic_num overflow\n");
0da71265
MN
2853 return -1;
2854 }
2855
2856 if(reordering_of_pic_nums_idc == 0) pred-= abs_diff_pic_num;
2857 else pred+= abs_diff_pic_num;
2858 pred &= h->max_pic_num - 1;
2859
2860 for(i= h->ref_count[list]-1; i>=index; i--){
2861 if(h->ref_list[list][i].pic_id == pred && h->ref_list[list][i].long_ref==0)
2862 break;
2863 }
2864 }else{
2865 pic_id= get_ue_golomb(&s->gb); //long_term_pic_idx
2866
2867 for(i= h->ref_count[list]-1; i>=index; i--){
2868 if(h->ref_list[list][i].pic_id == pic_id && h->ref_list[list][i].long_ref==1)
2869 break;
2870 }
2871 }
2872
2873 if(i < index){
9b879566 2874 av_log(h->s.avctx, AV_LOG_ERROR, "reference picture missing during reorder\n");
0da71265
MN
2875 memset(&h->ref_list[list][index], 0, sizeof(Picture)); //FIXME
2876 }else if(i > index){
2877 Picture tmp= h->ref_list[list][i];
2878 for(; i>index; i--){
2879 h->ref_list[list][i]= h->ref_list[list][i-1];
2880 }
2881 h->ref_list[list][index]= tmp;
2882 }
0bc42cad 2883 }else{
9b879566 2884 av_log(h->s.avctx, AV_LOG_ERROR, "illegal reordering_of_pic_nums_idc\n");
0da71265
MN
2885 return -1;
2886 }
2887 }
2888 }
2889
2890 if(h->slice_type!=B_TYPE) break;
2891 }
5ad984c9
LM
2892
2893 if(h->slice_type==B_TYPE && !h->direct_spatial_mv_pred)
2894 direct_dist_scale_factor(h);
0da71265
MN
2895 return 0;
2896}
2897
2898static int pred_weight_table(H264Context *h){
2899 MpegEncContext * const s = &h->s;
2900 int list, i;
2901
2902 h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
2903 h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
2904
2905 for(list=0; list<2; list++){
2906 for(i=0; i<h->ref_count[list]; i++){
2907 int luma_weight_flag, chroma_weight_flag;
2908
2909 luma_weight_flag= get_bits1(&s->gb);
2910 if(luma_weight_flag){
2911 h->luma_weight[list][i]= get_se_golomb(&s->gb);
2912 h->luma_offset[list][i]= get_se_golomb(&s->gb);
2913 }
2914
2915 chroma_weight_flag= get_bits1(&s->gb);
2916 if(chroma_weight_flag){
2917 int j;
2918 for(j=0; j<2; j++){
2919 h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
2920 h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
2921 }
2922 }
2923 }
2924 if(h->slice_type != B_TYPE) break;
2925 }
2926 return 0;
2927}
2928
2929/**
5175b937 2930 * instantaneous decoder refresh.
0da71265
MN
2931 */
2932static void idr(H264Context *h){
a4dae92b
LM
2933 int i,j;
2934
2935#define CHECK_DELAY(pic) \
2936 for(j = 0; h->delayed_pic[j]; j++) \
2937 if(pic == h->delayed_pic[j]){ \
2938 pic->reference=1; \
2939 break; \
2940 }
0da71265
MN
2941
2942 for(i=0; i<h->long_ref_count; i++){
2943 h->long_ref[i]->reference=0;
a4dae92b 2944 CHECK_DELAY(h->long_ref[i]);
0da71265
MN
2945 h->long_ref[i]= NULL;
2946 }
2947 h->long_ref_count=0;
2948
2949 for(i=0; i<h->short_ref_count; i++){
2950 h->short_ref[i]->reference=0;
a4dae92b 2951 CHECK_DELAY(h->short_ref[i]);
0da71265
MN
2952 h->short_ref[i]= NULL;
2953 }
2954 h->short_ref_count=0;
2955}
a4dae92b 2956#undef CHECK_DELAY
0da71265 2957
0da71265
MN
2958/**
2959 *
2960 * @return the removed picture or NULL if an error occures
2961 */
2962static Picture * remove_short(H264Context *h, int frame_num){
1924f3ce 2963 MpegEncContext * const s = &h->s;
0da71265
MN
2964 int i;
2965
1924f3ce 2966 if(s->avctx->debug&FF_DEBUG_MMCO)
9b879566 2967 av_log(h->s.avctx, AV_LOG_DEBUG, "remove short %d count %d\n", frame_num, h->short_ref_count);
1924f3ce 2968
0da71265
MN
2969 for(i=0; i<h->short_ref_count; i++){
2970 Picture *pic= h->short_ref[i];
1924f3ce 2971 if(s->avctx->debug&FF_DEBUG_MMCO)
9b879566 2972 av_log(h->s.avctx, AV_LOG_DEBUG, "%d %d %p\n", i, pic->frame_num, pic);
0da71265
MN
2973 if(pic->frame_num == frame_num){
2974 h->short_ref[i]= NULL;
2975 memmove(&h->short_ref[i], &h->short_ref[i+1], (h->short_ref_count - i - 1)*sizeof(Picture*));
2976 h->short_ref_count--;
2977 return pic;
2978 }
2979 }
2980 return NULL;
2981}
2982
2983/**
2984 *
2985 * @return the removed picture or NULL if an error occures
2986 */
2987static Picture * remove_long(H264Context *h, int i){
2988 Picture *pic;
2989
2990 if(i >= h->long_ref_count) return NULL;
2991 pic= h->long_ref[i];
2992 if(pic==NULL) return NULL;
2993
2994 h->long_ref[i]= NULL;
2995 memmove(&h->long_ref[i], &h->long_ref[i+1], (h->long_ref_count - i - 1)*sizeof(Picture*));
2996 h->long_ref_count--;
2997
2998 return pic;
2999}
3000
3001/**
3002 * Executes the reference picture marking (memory management control operations).
3003 */
3004static int execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){
3005 MpegEncContext * const s = &h->s;
3006 int i;
3007 int current_is_long=0;
3008 Picture *pic;
3009
3010 if((s->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0)
9b879566 3011 av_log(h->s.avctx, AV_LOG_DEBUG, "no mmco here\n");
0da71265
MN
3012
3013 for(i=0; i<mmco_count; i++){
3014 if(s->avctx->debug&FF_DEBUG_MMCO)
9b879566 3015 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
3016
3017 switch(mmco[i].opcode){
3018 case MMCO_SHORT2UNUSED:
3019 pic= remove_short(h, mmco[i].short_frame_num);
3020 if(pic==NULL) return -1;
3021 pic->reference= 0;
3022 break;
3023 case MMCO_SHORT2LONG:
3024 pic= remove_long(h, mmco[i].long_index);
3025 if(pic) pic->reference=0;
3026
3027 h->long_ref[ mmco[i].long_index ]= remove_short(h, mmco[i].short_frame_num);
3028 h->long_ref[ mmco[i].long_index ]->long_ref=1;
3029 break;
3030 case MMCO_LONG2UNUSED:
3031 pic= remove_long(h, mmco[i].long_index);
3032 if(pic==NULL) return -1;
3033 pic->reference= 0;
3034 break;
3035 case MMCO_LONG:
3036 pic= remove_long(h, mmco[i].long_index);
3037 if(pic) pic->reference=0;
3038
3039 h->long_ref[ mmco[i].long_index ]= s->current_picture_ptr;
3040 h->long_ref[ mmco[i].long_index ]->long_ref=1;
3041 h->long_ref_count++;
3042
3043 current_is_long=1;
3044 break;
3045 case MMCO_SET_MAX_LONG:
3046 assert(mmco[i].long_index <= 16);
3047 while(mmco[i].long_index < h->long_ref_count){
3048 pic= remove_long(h, mmco[i].long_index);
3049 pic->reference=0;
3050 }
3051 while(mmco[i].long_index > h->long_ref_count){
3052 h->long_ref[ h->long_ref_count++ ]= NULL;
3053 }
3054 break;
3055 case MMCO_RESET:
3056 while(h->short_ref_count){
3057 pic= remove_short(h, h->short_ref[0]->frame_num);
3058 pic->reference=0;
3059 }
3060 while(h->long_ref_count){
3061 pic= remove_long(h, h->long_ref_count-1);
3062 pic->reference=0;
3063 }
3064 break;
3065 default: assert(0);
3066 }
3067 }
3068
3069 if(!current_is_long){
3070 pic= remove_short(h, s->current_picture_ptr->frame_num);
3071 if(pic){
3072 pic->reference=0;
9b879566 3073 av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term buffer state detected\n");
0da71265
MN
3074 }
3075
3076 if(h->short_ref_count)
1924f3ce
MN
3077 memmove(&h->short_ref[1], &h->short_ref[0], h->short_ref_count*sizeof(Picture*));
3078
3079 h->short_ref[0]= s->current_picture_ptr;
0da71265
MN
3080 h->short_ref[0]->long_ref=0;
3081 h->short_ref_count++;
3082 }
3083
3084 return 0;
3085}
3086
3087static int decode_ref_pic_marking(H264Context *h){
3088 MpegEncContext * const s = &h->s;
3089 int i;
3090
3091 if(h->nal_unit_type == NAL_IDR_SLICE){ //FIXME fields
3092 s->broken_link= get_bits1(&s->gb) -1;
3093 h->mmco[0].long_index= get_bits1(&s->gb) - 1; // current_long_term_idx
3094 if(h->mmco[0].long_index == -1)
3095 h->mmco_index= 0;
3096 else{
3097 h->mmco[0].opcode= MMCO_LONG;
3098 h->mmco_index= 1;
3099 }
3100 }else{
3101 if(get_bits1(&s->gb)){ // adaptive_ref_pic_marking_mode_flag
579448a0 3102 for(i= 0; i<MAX_MMCO_COUNT; i++) {
0da71265
MN
3103 MMCOOpcode opcode= get_ue_golomb(&s->gb);;
3104
3105 h->mmco[i].opcode= opcode;
3106 if(opcode==MMCO_SHORT2UNUSED || opcode==MMCO_SHORT2LONG){
3107 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
3108/* if(h->mmco[i].short_frame_num >= h->short_ref_count || h->short_ref[ h->mmco[i].short_frame_num ] == NULL){
3109 fprintf(stderr, "illegal short ref in memory management control operation %d\n", mmco);
3110 return -1;
3111 }*/
3112 }
3113 if(opcode==MMCO_SHORT2LONG || opcode==MMCO_LONG2UNUSED || opcode==MMCO_LONG || opcode==MMCO_SET_MAX_LONG){
3114 h->mmco[i].long_index= get_ue_golomb(&s->gb);
3115 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 3116 av_log(h->s.avctx, AV_LOG_ERROR, "illegal long ref in memory management control operation %d\n", opcode);
0da71265
MN
3117 return -1;
3118 }
3119 }
3120
3121 if(opcode > MMCO_LONG){
9b879566 3122 av_log(h->s.avctx, AV_LOG_ERROR, "illegal memory management control operation %d\n", opcode);
0da71265
MN
3123 return -1;
3124 }
792bb815
MN
3125 if(opcode == MMCO_END)
3126 break;
0da71265
MN
3127 }
3128 h->mmco_index= i;
3129 }else{
3130 assert(h->long_ref_count + h->short_ref_count <= h->sps.ref_frame_count);
3131
3132 if(h->long_ref_count + h->short_ref_count == h->sps.ref_frame_count){ //FIXME fields
3133 h->mmco[0].opcode= MMCO_SHORT2UNUSED;
3134 h->mmco[0].short_frame_num= h->short_ref[ h->short_ref_count - 1 ]->frame_num;
3135 h->mmco_index= 1;
3136 }else
3137 h->mmco_index= 0;
3138 }
3139 }
3140
3141 return 0;
3142}
3143
3144static int init_poc(H264Context *h){
3145 MpegEncContext * const s = &h->s;
3146 const int max_frame_num= 1<<h->sps.log2_max_frame_num;
3147 int field_poc[2];
3148
3149 if(h->nal_unit_type == NAL_IDR_SLICE){
3150 h->frame_num_offset= 0;
3151 }else{
3152 if(h->frame_num < h->prev_frame_num)
3153 h->frame_num_offset= h->prev_frame_num_offset + max_frame_num;
3154 else
3155 h->frame_num_offset= h->prev_frame_num_offset;
3156 }
3157
3158 if(h->sps.poc_type==0){
3159 const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
3160
3161 if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
3162 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
3163 else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
3164 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
3165 else
3166 h->poc_msb = h->prev_poc_msb;
3167//printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
3168 field_poc[0] =
3169 field_poc[1] = h->poc_msb + h->poc_lsb;
3170 if(s->picture_structure == PICT_FRAME)
3171 field_poc[1] += h->delta_poc_bottom;
3172 }else if(h->sps.poc_type==1){
3173 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
3174 int i;
3175
3176 if(h->sps.poc_cycle_length != 0)
3177 abs_frame_num = h->frame_num_offset + h->frame_num;
3178 else
3179 abs_frame_num = 0;
3180
3181 if(h->nal_ref_idc==0 && abs_frame_num > 0)
3182 abs_frame_num--;
3183
3184 expected_delta_per_poc_cycle = 0;
3185 for(i=0; i < h->sps.poc_cycle_length; i++)
3186 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
3187
3188 if(abs_frame_num > 0){
3189 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
3190 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
3191
3192 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
3193 for(i = 0; i <= frame_num_in_poc_cycle; i++)
3194 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
3195 } else
3196 expectedpoc = 0;
3197
3198 if(h->nal_ref_idc == 0)
3199 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
3200
3201 field_poc[0] = expectedpoc + h->delta_poc[0];
3202 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
3203
3204 if(s->picture_structure == PICT_FRAME)
3205 field_poc[1] += h->delta_poc[1];
3206 }else{
3207 int poc;
3208 if(h->nal_unit_type == NAL_IDR_SLICE){
3209 poc= 0;
3210 }else{
3211 if(h->nal_ref_idc) poc= 2*(h->frame_num_offset + h->frame_num);
3212 else poc= 2*(h->frame_num_offset + h->frame_num) - 1;
3213 }
3214 field_poc[0]= poc;
3215 field_poc[1]= poc;
3216 }
3217
3218 if(s->picture_structure != PICT_BOTTOM_FIELD)
3219 s->current_picture_ptr->field_poc[0]= field_poc[0];
3220 if(s->picture_structure != PICT_TOP_FIELD)
3221 s->current_picture_ptr->field_poc[1]= field_poc[1];
3222 if(s->picture_structure == PICT_FRAME) // FIXME field pix?
3223 s->current_picture_ptr->poc= FFMIN(field_poc[0], field_poc[1]);
3224
3225 return 0;
3226}
3227
3228/**
3229 * decodes a slice header.
3230 * this will allso call MPV_common_init() and frame_start() as needed
3231 */
3232static int decode_slice_header(H264Context *h){
3233 MpegEncContext * const s = &h->s;
3234 int first_mb_in_slice, pps_id;
3235 int num_ref_idx_active_override_flag;
3236 static const uint8_t slice_type_map[5]= {P_TYPE, B_TYPE, I_TYPE, SP_TYPE, SI_TYPE};
0da71265
MN
3237
3238 s->current_picture.reference= h->nal_ref_idc != 0;
3239
3240 first_mb_in_slice= get_ue_golomb(&s->gb);
3241
3242 h->slice_type= get_ue_golomb(&s->gb);
3243 if(h->slice_type > 9){
9b879566 3244 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 3245 return -1;
0da71265
MN
3246 }
3247 if(h->slice_type > 4){
3248 h->slice_type -= 5;
3249 h->slice_type_fixed=1;
3250 }else
3251 h->slice_type_fixed=0;
3252
3253 h->slice_type= slice_type_map[ h->slice_type ];
3254
3255 s->pict_type= h->slice_type; // to make a few old func happy, its wrong though
3256
3257 pps_id= get_ue_golomb(&s->gb);
3258 if(pps_id>255){
9b879566 3259 av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
0da71265
MN
3260 return -1;
3261 }
3262 h->pps= h->pps_buffer[pps_id];
8b92b792 3263 if(h->pps.slice_group_count == 0){
9b879566 3264 av_log(h->s.avctx, AV_LOG_ERROR, "non existing PPS referenced\n");
8b92b792
MN
3265 return -1;
3266 }
3267
0da71265 3268 h->sps= h->sps_buffer[ h->pps.sps_id ];
8b92b792 3269 if(h->sps.log2_max_frame_num == 0){
9b879566 3270 av_log(h->s.avctx, AV_LOG_ERROR, "non existing SPS referenced\n");
8b92b792
MN
3271 return -1;
3272 }
0da71265
MN
3273
3274 s->mb_width= h->sps.mb_width;
3275 s->mb_height= h->sps.mb_height;
0da71265 3276
650cec0c
LM
3277 h->b_stride= s->mb_width*4 + 1;
3278 h->b8_stride= s->mb_width*2 + 1;
0da71265 3279
5175b937
LLL
3280 s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
3281 s->resync_mb_y = s->mb_y = first_mb_in_slice / s->mb_width; //FIXME AFFW
0da71265 3282
a15e68de 3283 s->width = 16*s->mb_width - 2*(h->sps.crop_left + h->sps.crop_right );
0da71265 3284 if(h->sps.frame_mbs_only_flag)
a15e68de 3285 s->height= 16*s->mb_height - 2*(h->sps.crop_top + h->sps.crop_bottom);
0da71265 3286 else
a15e68de 3287 s->height= 16*s->mb_height - 4*(h->sps.crop_top + h->sps.crop_bottom); //FIXME recheck
0da71265 3288
0da71265 3289 if (s->context_initialized
5ff85f1d 3290 && ( s->width != s->avctx->width || s->height != s->avctx->height)) {
0da71265
MN
3291 free_tables(h);
3292 MPV_common_end(s);
3293 }
3294 if (!s->context_initialized) {
3295 if (MPV_common_init(s) < 0)
3296 return -1;
3297
3298 alloc_tables(h);
3299
3300 s->avctx->width = s->width;
3301 s->avctx->height = s->height;
5ff85f1d 3302 s->avctx->sample_aspect_ratio= h->sps.sar;
ec587a50
MR
3303
3304 if(h->sps.timing_info_present_flag && h->sps.fixed_frame_rate_flag){
3305 s->avctx->frame_rate = h->sps.time_scale;
3306 s->avctx->frame_rate_base = h->sps.num_units_in_tick;
3307 }
0da71265
MN
3308 }
3309
5175b937 3310 if(h->slice_num == 0){
0da71265
MN
3311 frame_start(h);
3312 }
3313
1924f3ce 3314 s->current_picture_ptr->frame_num= //FIXME frame_num cleanup
0da71265
MN
3315 h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
3316
3317 if(h->sps.frame_mbs_only_flag){
3318 s->picture_structure= PICT_FRAME;
3319 }else{
3320 if(get_bits1(&s->gb)) //field_pic_flag
3321 s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
3322 else
3323 s->picture_structure= PICT_FRAME;
3324 }
3325
3326 if(s->picture_structure==PICT_FRAME){
3327 h->curr_pic_num= h->frame_num;
3328 h->max_pic_num= 1<< h->sps.log2_max_frame_num;
3329 }else{
3330 h->curr_pic_num= 2*h->frame_num;
3331 h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
3332 }
3333
3334 if(h->nal_unit_type == NAL_IDR_SLICE){
1df1df0b 3335 get_ue_golomb(&s->gb); /* idr_pic_id */
0da71265
MN
3336 }
3337
3338 if(h->sps.poc_type==0){
3339 h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
3340
3341 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
3342 h->delta_poc_bottom= get_se_golomb(&s->gb);
3343 }
3344 }
3345
3346 if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
3347 h->delta_poc[0]= get_se_golomb(&s->gb);
3348
3349 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
3350 h->delta_poc[1]= get_se_golomb(&s->gb);
3351 }
3352
3353 init_poc(h);
3354
3355 if(h->pps.redundant_pic_cnt_present){
3356 h->redundant_pic_count= get_ue_golomb(&s->gb);
3357 }
3358
3359 //set defaults, might be overriden a few line later
3360 h->ref_count[0]= h->pps.ref_count[0];
3361 h->ref_count[1]= h->pps.ref_count[1];
3362
3363 if(h->slice_type == P_TYPE || h->slice_type == SP_TYPE || h->slice_type == B_TYPE){
3364 if(h->slice_type == B_TYPE){
3365 h->direct_spatial_mv_pred= get_bits1(&s->gb);
3366 }
3367 num_ref_idx_active_override_flag= get_bits1(&s->gb);
3368
3369 if(num_ref_idx_active_override_flag){
3370 h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
3371 if(h->slice_type==B_TYPE)
3372 h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
3373
3374 if(h->ref_count[0] > 32 || h->ref_count[1] > 32){
9b879566 3375 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
0da71265
MN
3376 return -1;
3377 }
3378 }
3379 }
3380
5175b937 3381 if(h->slice_num == 0){
0da71265
MN
3382 fill_default_ref_list(h);
3383 }
3384
3385 decode_ref_pic_list_reordering(h);
3386
3387 if( (h->pps.weighted_pred && (h->slice_type == P_TYPE || h->slice_type == SP_TYPE ))
3388 || (h->pps.weighted_bipred_idc==1 && h->slice_type==B_TYPE ) )
3389 pred_weight_table(h);
3390
3391 if(s->current_picture.reference)
3392 decode_ref_pic_marking(h);
0da71265 3393
e5017ab8
LA
3394 if( h->slice_type != I_TYPE && h->slice_type != SI_TYPE && h->pps.cabac )
3395 h->cabac_init_idc = get_ue_golomb(&s->gb);
3396
3397 h->last_qscale_diff = 0;
3398 s->qscale = h->pps.init_qp + get_se_golomb(&s->gb);
3ebc7e04
MN
3399 if(s->qscale<0 || s->qscale>51){
3400 av_log(s->avctx, AV_LOG_ERROR, "QP %d out of range\n", s->qscale);
3401 return -1;
3402 }
579448a0 3403 h->chroma_qp = get_chroma_qp(h, s->qscale);
0da71265
MN
3404 //FIXME qscale / qp ... stuff
3405 if(h->slice_type == SP_TYPE){
1df1df0b 3406 get_bits1(&s->gb); /* sp_for_switch_flag */
0da71265
MN
3407 }
3408 if(h->slice_type==SP_TYPE || h->slice_type == SI_TYPE){
1df1df0b 3409 get_se_golomb(&s->gb); /* slice_qs_delta */
0da71265
MN
3410 }
3411
53c05b1e 3412 h->deblocking_filter = 1;
3ebc7e04
MN
3413 h->slice_alpha_c0_offset = 0;
3414 h->slice_beta_offset = 0;
0da71265 3415 if( h->pps.deblocking_filter_parameters_present ) {
53c05b1e
MN
3416 h->deblocking_filter= get_ue_golomb(&s->gb);
3417 if(h->deblocking_filter < 2)
3418 h->deblocking_filter^= 1; // 1<->0
3419
3420 if( h->deblocking_filter ) {
980a82b7
MN
3421 h->slice_alpha_c0_offset = get_se_golomb(&s->gb) << 1;
3422 h->slice_beta_offset = get_se_golomb(&s->gb) << 1;
0da71265 3423 }
980a82b7 3424 }
0da71265
MN
3425
3426#if 0 //FMO
3427 if( h->pps.num_slice_groups > 1 && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
3428 slice_group_change_cycle= get_bits(&s->gb, ?);
3429#endif
3430
5175b937
LLL
3431 h->slice_num++;
3432
0da71265 3433 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
5175b937
LLL
3434 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\n",
3435 h->slice_num, first_mb_in_slice,
d8085ea7 3436 av_get_pict_type_char(h->slice_type),
0da71265
MN
3437 pps_id, h->frame_num,
3438 s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
3439 h->ref_count[0], h->ref_count[1],
3440 s->qscale,
53c05b1e 3441 h->deblocking_filter
0da71265
MN
3442 );
3443 }
3444
3445 return 0;
3446}
3447
3448/**
3449 *
3450 */
3451static inline int get_level_prefix(GetBitContext *gb){
3452 unsigned int buf;
3453 int log;
3454
3455 OPEN_READER(re, gb);
3456 UPDATE_CACHE(re, gb);
3457 buf=GET_CACHE(re, gb);
3458
3459 log= 32 - av_log2(buf);
3460#ifdef TRACE
3461 print_bin(buf>>(32-log), log);
0fa8158d 3462 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
3463#endif
3464
3465 LAST_SKIP_BITS(re, gb, log);
3466 CLOSE_READER(re, gb);
3467
3468 return log-1;
3469}
3470
3471/**
3472 * decodes a residual block.
3473 * @param n block index
3474 * @param scantable scantable
3475 * @param max_coeff number of coefficients in the block
3476 * @return <0 if an error occured
3477 */
3478static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, int qp, int max_coeff){
3479 MpegEncContext * const s = &h->s;
3480 const uint16_t *qmul= dequant_coeff[qp];
3481 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};
3482 int level[16], run[16];
3483 int suffix_length, zeros_left, coeff_num, coeff_token, total_coeff, i, trailing_ones;
3484
3485 //FIXME put trailing_onex into the context
3486
3487 if(n == CHROMA_DC_BLOCK_INDEX){
3488 coeff_token= get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1);
3489 total_coeff= coeff_token>>2;
3490 }else{
3491 if(n == LUMA_DC_BLOCK_INDEX){
3492 total_coeff= pred_non_zero_count(h, 0);
3493 coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
3494 total_coeff= coeff_token>>2;
3495 }else{
3496 total_coeff= pred_non_zero_count(h, n);
3497 coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
3498 total_coeff= coeff_token>>2;
3499 h->non_zero_count_cache[ scan8[n] ]= total_coeff;
3500 }
3501 }
3502
3503 //FIXME set last_non_zero?
3504
3505 if(total_coeff==0)
3506 return 0;
3507
3508 trailing_ones= coeff_token&3;
95c26348 3509 tprintf("trailing:%d, total:%d\n", trailing_ones, total_coeff);
0da71265
MN
3510 assert(total_coeff<=16);
3511
3512 for(i=0; i<trailing_ones; i++){
3513 level[i]= 1 - 2*get_bits1(gb);
3514 }
3515
3516 suffix_length= total_coeff > 10 && trailing_ones < 3;
3517
3518 for(; i<total_coeff; i++){
3519 const int prefix= get_level_prefix(gb);
3520 int level_code, mask;
3521
3522 if(prefix<14){ //FIXME try to build a large unified VLC table for all this
3523 if(suffix_length)
3524 level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
3525 else
3526 level_code= (prefix<<suffix_length); //part
3527 }else if(prefix==14){
3528 if(suffix_length)
3529 level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
3530 else
3531 level_code= prefix + get_bits(gb, 4); //part
3532 }else if(prefix==15){
3533 level_code= (prefix<<suffix_length) + get_bits(gb, 12); //part
3534 if(suffix_length==0) level_code+=15; //FIXME doesnt make (much)sense
3535 }else{
9b879566 3536 av_log(h->s.avctx, AV_LOG_ERROR, "prefix too large at %d %d\n", s->mb_x, s->mb_y);
0da71265
MN
3537 return -1;
3538 }
3539
3540 if(i==trailing_ones && i<3) level_code+= 2; //FIXME split first iteration
3541
3542 mask= -(level_code&1);
3543 level[i]= (((2+level_code)>>1) ^ mask) - mask;
3544
3545 if(suffix_length==0) suffix_length=1; //FIXME split first iteration
3546
3547#if 1
3548 if(ABS(level[i]) > (3<<(suffix_length-1)) && suffix_length<6) suffix_length++;
3549#else
3550 if((2+level_code)>>1) > (3<<(suffix_length-1)) && suffix_length<6) suffix_length++;
980a82b7 3551 /* ? == prefix > 2 or sth */
0da71265 3552#endif
95c26348 3553 tprintf("level: %d suffix_length:%d\n", level[i], suffix_length);
0da71265
MN
3554 }
3555
3556 if(total_coeff == max_coeff)
3557 zeros_left=0;
3558 else{
3559 if(n == CHROMA_DC_BLOCK_INDEX)
3560 zeros_left= get_vlc2(gb, chroma_dc_total_zeros_vlc[ total_coeff-1 ].table, CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1);
3561 else
3562 zeros_left= get_vlc2(gb, total_zeros_vlc[ total_coeff-1 ].table, TOTAL_ZEROS_VLC_BITS, 1);
3563 }
3564
3565 for(i=0; i<total_coeff-1; i++){
3566 if(zeros_left <=0)
3567 break;
3568 else if(zeros_left < 7){
3569 run[i]= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
3570 }else{
3571 run[i]= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
3572 }
3573 zeros_left -= run[i];
3574 }
3575
3576 if(zeros_left<0){
9b879566 3577 av_log(h->s.avctx, AV_LOG_ERROR, "negative number of zero coeffs at %d %d\n", s->mb_x, s->mb_y);
0da71265
MN
3578 return -1;
3579 }
3580
3581 for(; i<total_coeff-1; i++){
3582 run[i]= 0;
3583 }
3584
3585 run[i]= zeros_left;
3586
3587 coeff_num=-1;
3588 if(n > 24){
3589 for(i=total_coeff-1; i>=0; i--){ //FIXME merge into rundecode?
3590 int j;
3591
3592 coeff_num += run[i] + 1; //FIXME add 1 earlier ?
3593 j= scantable[ coeff_num ];
3594
3595 block[j]= level[i];
3596 }
3597 }else{
3598 for(i=total_coeff-1; i>=0; i--){ //FIXME merge into rundecode?
3599 int j;
3600
3601 coeff_num += run[i] + 1; //FIXME add 1 earlier ?
3602 j= scantable[ coeff_num ];
3603
3604 block[j]= level[i] * qmul[j];
3605// printf("%d %d ", block[j], qmul[j]);
3606 }
3607 }
3608 return 0;
3609}
3610
3611/**
5ad984c9
LM
3612 * decodes a P_SKIP or B_SKIP macroblock
3613 */
3614static void decode_mb_skip(H264Context *h){
3615 MpegEncContext * const s = &h->s;
3616 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
3617 int mb_type;
3618
3619 memset(h->non_zero_count[mb_xy], 0, 16);
3620 memset(h->non_zero_count_cache + 8, 0, 8*5); //FIXME ugly, remove pfui
3621
3622 if( h->slice_type == B_TYPE )
3623 {
3624 // just for fill_caches. pred_direct_motion will set the real mb_type
3625 mb_type= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2|MB_TYPE_SKIP;
3626 //FIXME mbaff
3627
3628 fill_caches(h, mb_type); //FIXME check what is needed and what not ...
3629 pred_direct_motion(h, &mb_type);
3630 if(h->pps.cabac){
3631 fill_rectangle(h->mvd_cache[0][scan8[0]], 4, 4, 8, 0, 4);
3632 fill_rectangle(h->mvd_cache[1][scan8[0]], 4, 4, 8, 0, 4);
3633 }
3634 }
3635 else
3636 {
3637 int mx, my;
3638 mb_type= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P1L0|MB_TYPE_SKIP;
3639
3640 if(h->sps.mb_aff && s->mb_skip_run==0 && (s->mb_y&1)==0){
3641 h->mb_field_decoding_flag= get_bits1(&s->gb);
3642 }
3643 if(h->mb_field_decoding_flag)
3644 mb_type|= MB_TYPE_INTERLACED;
3645
3646 fill_caches(h, mb_type); //FIXME check what is needed and what not ...
3647 pred_pskip_motion(h, &mx, &my);
3648 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);
3649 fill_rectangle( h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mx,my), 4);
3650 if(h->pps.cabac)
3651 fill_rectangle(h->mvd_cache[0][scan8[0]], 4, 4, 8, 0, 4);
3652 }
3653
3654 write_back_motion(h, mb_type);
3655 s->current_picture.mb_type[mb_xy]= mb_type|MB_TYPE_SKIP;
3656 s->current_picture.qscale_table[mb_xy]= s->qscale;
3657 h->slice_table[ mb_xy ]= h->slice_num;
3658 h->prev_mb_skiped= 1;
3659}
3660
3661/**
0da71265
MN
3662 * decodes a macroblock
3663 * @returns 0 if ok, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
3664 */
e5017ab8 3665static int decode_mb_cavlc(H264Context *h){
0da71265 3666 MpegEncContext * const s = &h->s;
7bc9090a 3667 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
1924f3ce 3668 int mb_type, partition_count, cbp;
0da71265 3669
f7a8c179 3670 s->dsp.clear_blocks(h->mb); //FIXME avoid if allready clear (move after skip handlong?
0da71265 3671
95c26348 3672 tprintf("pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
1df1df0b
FB
3673 cbp = 0; /* avoid warning. FIXME: find a solution without slowing
3674 down the code */
0da71265
MN
3675 if(h->slice_type != I_TYPE && h->slice_type != SI_TYPE){
3676 if(s->mb_skip_run==-1)
3677 s->mb_skip_run= get_ue_golomb(&s->gb);
3678
3679 if (s->mb_skip_run--) {
5ad984c9 3680 decode_mb_skip(h);
0da71265
MN
3681 return 0;
3682 }
3683 }
3684 if(h->sps.mb_aff /* && !field pic FIXME needed? */){
3685 if((s->mb_y&1)==0)
3686 h->mb_field_decoding_flag = get_bits1(&s->gb);
3687 }else
3688 h->mb_field_decoding_flag=0; //FIXME som ed note ?!
3689
3690 h->prev_mb_skiped= 0;
3691
3692 mb_type= get_ue_golomb(&s->gb);
3693 if(h->slice_type == B_TYPE){
3694 if(mb_type < 23){
3695 partition_count= b_mb_type_info[mb_type].partition_count;
3696 mb_type= b_mb_type_info[mb_type].type;
3697 }else{
3698 mb_type -= 23;
3699 goto decode_intra_mb;
3700 }
3701 }else if(h->slice_type == P_TYPE /*|| h->slice_type == SP_TYPE */){
3702 if(mb_type < 5){
3703 partition_count= p_mb_type_info[mb_type].partition_count;
3704 mb_type= p_mb_type_info[mb_type].type;
3705 }else{
3706 mb_type -= 5;
3707 goto decode_intra_mb;
3708 }
3709 }else{
3710 assert(h->slice_type == I_TYPE);
3711decode_intra_mb:
3712 if(mb_type > 25){
9b879566 3713 av_log(h->s.avctx, AV_LOG_ERROR, "mb_type %d in %c slice to large at %d %d\n", mb_type, av_get_pict_type_char(h->slice_type), s->mb_x, s->mb_y);
0da71265
MN
3714 return -1;
3715 }
3716 partition_count=0;
3717 cbp= i_mb_type_info[mb_type].cbp;
3718 h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode;
3719 mb_type= i_mb_type_info[mb_type].type;
3720 }
3721
3722 if(h->mb_field_decoding_flag)
3723 mb_type |= MB_TYPE_INTERLACED;
3724
3725 s->current_picture.mb_type[mb_xy]= mb_type;
3726 h->slice_table[ mb_xy ]= h->slice_num;
3727
3728 if(IS_INTRA_PCM(mb_type)){
3729 const uint8_t *ptr;
af6e2fed 3730 int x, y;
0da71265
MN
3731
3732 // we assume these blocks are very rare so we dont optimize it
3733 align_get_bits(&s->gb);
3734
3735 ptr= s->gb.buffer + get_bits_count(&s->gb);
3736
3737 for(y=0; y<16; y++){
3738 const int index= 4*(y&3) + 64*(y>>2);
3739 for(x=0; x<16; x++){
3740 h->mb[index + (x&3) + 16*(x>>2)]= *(ptr++);
3741 }
3742 }
3743 for(y=0; y<8; y++){
3744 const int index= 256 + 4*(y&3) + 32*(y>>2);
3745 for(x=0; x<8; x++){
3746 h->mb[index + (x&3) + 16*(x>>2)]= *(ptr++);
3747 }
3748 }
3749 for(y=0; y<8; y++){
3750 const int index= 256 + 64 + 4*(y&3) + 32*(y>>2);
3751 for(x=0; x<8; x++){
3752 h->mb[index + (x&3) + 16*(x>>2)]= *(ptr++);
3753 }
3754 }
3755
3756 skip_bits(&s->gb, 384); //FIXME check /fix the bitstream readers
3757
53c05b1e
MN
3758 //FIXME deblock filter, non_zero_count_cache init ...
3759 memset(h->non_zero_count[mb_xy], 16, 16);
980a82b7 3760 s->current_picture.qscale_table[mb_xy]= s->qscale;
0da71265
MN
3761
3762 return 0;
3763 }
3764
3765 fill_caches(h, mb_type);
3766
3767 //mb_pred
3768 if(IS_INTRA(mb_type)){
3769// init_top_left_availability(h);
3770 if(IS_INTRA4x4(mb_type)){
3771 int i;
3772
3773// fill_intra4x4_pred_table(h);
3774 for(i=0; i<16; i++){
3775 const int mode_coded= !get_bits1(&s->gb);
3776 const int predicted_mode= pred_intra_mode(h, i);
3777 int mode;
3778
3779 if(mode_coded){
3780 const int rem_mode= get_bits(&s->gb, 3);
3781 if(rem_mode<predicted_mode)
3782 mode= rem_mode;
3783 else
3784 mode= rem_mode + 1;
3785