More approved hunks for VAAPI & our new and cleaner hwaccel API.
[libav.git] / libavcodec / h263dec.c
CommitLineData
de6d9b64 1/*
983e3246 2 * H.263 decoder
406792e7 3 * Copyright (c) 2001 Fabrice Bellard
8f2ab833 4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
de6d9b64 5 *
b78e7197
DB
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
ff4ec49e
FB
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
b78e7197 11 * version 2.1 of the License, or (at your option) any later version.
de6d9b64 12 *
b78e7197 13 * FFmpeg is distributed in the hope that it will be useful,
de6d9b64 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
ff4ec49e
FB
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
de6d9b64 17 *
ff4ec49e 18 * You should have received a copy of the GNU Lesser General Public
b78e7197 19 * License along with FFmpeg; if not, write to the Free Software
5509bffa 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
de6d9b64 21 */
115329f1 22
983e3246 23/**
bad5537e 24 * @file libavcodec/h263dec.c
983e3246
MN
25 * H.263 decoder.
26 */
115329f1 27
40e5d31b 28#include "internal.h"
de6d9b64 29#include "avcodec.h"
6000abfa 30#include "dsputil.h"
de6d9b64 31#include "mpegvideo.h"
c33d9814 32#include "h263_parser.h"
df495dbd 33#include "mpeg4video_parser.h"
15025553 34#include "msmpeg4.h"
de6d9b64
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35
36//#define DEBUG
02734c6a 37//#define PRINT_FRAME_TIME
de6d9b64 38
98a6fff9 39av_cold int ff_h263_decode_init(AVCodecContext *avctx)
de6d9b64
FB
40{
41 MpegEncContext *s = avctx->priv_data;
519c2b6d 42
bf89e6b1 43 s->avctx = avctx;
de6d9b64
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44 s->out_format = FMT_H263;
45
21adafec
MN
46 s->width = avctx->coded_width;
47 s->height = avctx->coded_height;
92ba5ffb 48 s->workaround_bugs= avctx->workaround_bugs;
de6d9b64 49
4d2858de 50 // set defaults
3edcacde 51 MPV_decode_defaults(s);
4d2858de 52 s->quant_precision=5;
4d2858de 53 s->decode_mb= ff_h263_decode_mb;
4e00e76b 54 s->low_delay= 1;
5fe061a0 55 avctx->pix_fmt= PIX_FMT_YUV420P;
a573cc27 56 s->unrestricted_mv= 1;
4d2858de 57
de6d9b64
FB
58 /* select sub codec */
59 switch(avctx->codec->id) {
60 case CODEC_ID_H263:
68b94c35 61 s->unrestricted_mv= 0;
de6d9b64 62 break;
bf89e6b1 63 case CODEC_ID_MPEG4:
fcfee63b 64 s->decode_mb= ff_mpeg4_decode_mb;
de6d9b64
FB
65 s->time_increment_bits = 4; /* default value for broken headers */
66 s->h263_pred = 1;
4e00e76b 67 s->low_delay = 0; //default, might be overriden in the vol header during header parsing
de6d9b64 68 break;
84afee34 69 case CODEC_ID_MSMPEG4V1:
de6d9b64
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70 s->h263_msmpeg4 = 1;
71 s->h263_pred = 1;
84afee34
MN
72 s->msmpeg4_version=1;
73 break;
74 case CODEC_ID_MSMPEG4V2:
75 s->h263_msmpeg4 = 1;
76 s->h263_pred = 1;
77 s->msmpeg4_version=2;
78 break;
79 case CODEC_ID_MSMPEG4V3:
80 s->h263_msmpeg4 = 1;
81 s->h263_pred = 1;
82 s->msmpeg4_version=3;
de6d9b64 83 break;
e1a9dbff
MN
84 case CODEC_ID_WMV1:
85 s->h263_msmpeg4 = 1;
86 s->h263_pred = 1;
87 s->msmpeg4_version=4;
88 break;
8f8402e4
MN
89 case CODEC_ID_WMV2:
90 s->h263_msmpeg4 = 1;
91 s->h263_pred = 1;
92 s->msmpeg4_version=5;
93 break;
c6bb50e0 94 case CODEC_ID_VC1:
0d33db8a 95 case CODEC_ID_WMV3:
96 s->h263_msmpeg4 = 1;
97 s->h263_pred = 1;
98 s->msmpeg4_version=6;
99 break;
de6d9b64 100 case CODEC_ID_H263I:
de6d9b64 101 break;
d4f5d74a
GM
102 case CODEC_ID_FLV1:
103 s->h263_flv = 1;
104 break;
de6d9b64
FB
105 default:
106 return -1;
107 }
d7e9533a 108 s->codec_id= avctx->codec->id;
93a21abd 109
de6d9b64 110 /* for h263, we allocate the images after having read the header */
488fa19a 111 if (avctx->codec->id != CODEC_ID_H263 && avctx->codec->id != CODEC_ID_MPEG4)
4949028f
J
112 if (MPV_common_init(s) < 0)
113 return -1;
de6d9b64 114
49fb20cb 115 if (CONFIG_MSMPEG4_DECODER && s->h263_msmpeg4)
8f8402e4 116 ff_msmpeg4_decode_init(s);
de6d9b64
FB
117 else
118 h263_decode_init_vlc(s);
115329f1 119
de6d9b64
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120 return 0;
121}
122
98a6fff9 123av_cold int ff_h263_decode_end(AVCodecContext *avctx)
de6d9b64
FB
124{
125 MpegEncContext *s = avctx->priv_data;
126
127 MPV_common_end(s);
128 return 0;
129}
130
7866eeff 131/**
bb628dae 132 * returns the number of bytes consumed for building the current frame
7866eeff
MN
133 */
134static int get_consumed_bytes(MpegEncContext *s, int buf_size){
135 int pos= (get_bits_count(&s->gb)+7)>>3;
115329f1 136
d5a21172 137 if(s->divx_packed){
7866eeff 138 //we would have to scan through the whole buf to handle the weird reordering ...
115329f1 139 return buf_size;
d7425f59
MN
140 }else if(s->flags&CODEC_FLAG_TRUNCATED){
141 pos -= s->parse_context.last_index;
142 if(pos<0) pos=0; // padding is not really read so this might be -1
143 return pos;
7866eeff 144 }else{
755bfeab 145 if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
77277835 146 if(pos+10>buf_size) pos=buf_size; // oops ;)
7866eeff
MN
147
148 return pos;
149 }
150}
151
4d2858de 152static int decode_slice(MpegEncContext *s){
46b4feec 153 const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
af2a9e8f 154 const int mb_size= 16>>s->avctx->lowres;
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155 s->last_resync_gb= s->gb;
156 s->first_slice_line= 1;
115329f1 157
4d2858de
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158 s->resync_mb_x= s->mb_x;
159 s->resync_mb_y= s->mb_y;
160
554daa24 161 ff_set_qscale(s, s->qscale);
115329f1 162
40e5d31b
GB
163 if (s->avctx->hwaccel)
164 return 0;
165
4d2858de
MN
166 if(s->partitioned_frame){
167 const int qscale= s->qscale;
168
169 if(s->codec_id==CODEC_ID_MPEG4){
170 if(ff_mpeg4_decode_partitions(s) < 0)
115329f1 171 return -1;
4d2858de 172 }
115329f1 173
d99ce8d7 174 /* restore variables which were modified */
4d2858de
MN
175 s->first_slice_line=1;
176 s->mb_x= s->resync_mb_x;
177 s->mb_y= s->resync_mb_y;
554daa24 178 ff_set_qscale(s, qscale);
4d2858de
MN
179 }
180
181 for(; s->mb_y < s->mb_height; s->mb_y++) {
182 /* per-row end of slice checks */
183 if(s->msmpeg4_version){
184 if(s->resync_mb_y + s->slice_height == s->mb_y){
46b4feec
MN
185 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_END|DC_END|MV_END);
186
4d2858de
MN
187 return 0;
188 }
189 }
115329f1 190
4d2858de
MN
191 if(s->msmpeg4_version==1){
192 s->last_dc[0]=
193 s->last_dc[1]=
194 s->last_dc[2]= 128;
195 }
115329f1 196
4d2858de
MN
197 ff_init_block_index(s);
198 for(; s->mb_x < s->mb_width; s->mb_x++) {
199 int ret;
200
201 ff_update_block_index(s);
202
203 if(s->resync_mb_x == s->mb_x && s->resync_mb_y+1 == s->mb_y){
115329f1 204 s->first_slice_line=0;
4d2858de
MN
205 }
206
207 /* DCT & quantize */
115329f1 208
4d2858de
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209 s->mv_dir = MV_DIR_FORWARD;
210 s->mv_type = MV_TYPE_16X16;
160d679c 211// s->mb_skipped = 0;
4d2858de
MN
212//printf("%d %d %06X\n", ret, get_bits_count(&s->gb), show_bits(&s->gb, 24));
213 ret= s->decode_mb(s, s->block);
4d2858de 214
9701840b 215 if (s->pict_type!=FF_B_TYPE)
7d1c3fc1
MN
216 ff_h263_update_motion_val(s);
217
4d2858de 218 if(ret<0){
7bc9090a 219 const int xy= s->mb_x + s->mb_y*s->mb_stride;
4d2858de 220 if(ret==SLICE_END){
aef95c8c 221 MPV_decode_mb(s, s->block);
332f9ac4
MN
222 if(s->loop_filter)
223 ff_h263_loop_filter(s);
aef95c8c 224
35aa136a 225//printf("%d %d %d %06X\n", s->mb_x, s->mb_y, s->gb.size*8 - get_bits_count(&s->gb), show_bits(&s->gb, 24));
46b4feec 226 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
a61f8265
MN
227
228 s->padding_bug_score--;
115329f1 229
4d2858de
MN
230 if(++s->mb_x >= s->mb_width){
231 s->mb_x=0;
af2a9e8f 232 ff_draw_horiz_band(s, s->mb_y*mb_size, mb_size);
4d2858de
MN
233 s->mb_y++;
234 }
115329f1 235 return 0;
4d2858de 236 }else if(ret==SLICE_NOEND){
9b879566 237 av_log(s->avctx, AV_LOG_ERROR, "Slice mismatch at MB: %d\n", xy);
46b4feec 238 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x+1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
4d2858de
MN
239 return -1;
240 }
9b879566 241 av_log(s->avctx, AV_LOG_ERROR, "Error at MB: %d\n", xy);
46b4feec 242 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
115329f1 243
4d2858de
MN
244 return -1;
245 }
aef95c8c
MN
246
247 MPV_decode_mb(s, s->block);
332f9ac4
MN
248 if(s->loop_filter)
249 ff_h263_loop_filter(s);
4d2858de 250 }
115329f1 251
af2a9e8f 252 ff_draw_horiz_band(s, s->mb_y*mb_size, mb_size);
115329f1 253
4d2858de
MN
254 s->mb_x= 0;
255 }
115329f1 256
4d2858de
MN
257 assert(s->mb_x==0 && s->mb_y==s->mb_height);
258
a61f8265
MN
259 /* try to detect the padding bug */
260 if( s->codec_id==CODEC_ID_MPEG4
115329f1 261 && (s->workaround_bugs&FF_BUG_AUTODETECT)
68f593b4
MN
262 && s->gb.size_in_bits - get_bits_count(&s->gb) >=0
263 && s->gb.size_in_bits - get_bits_count(&s->gb) < 48
96d9cb22 264// && !s->resync_marker
a61f8265 265 && !s->data_partitioning){
115329f1 266
a61f8265 267 const int bits_count= get_bits_count(&s->gb);
68f593b4 268 const int bits_left = s->gb.size_in_bits - bits_count;
115329f1 269
650faac6
MN
270 if(bits_left==0){
271 s->padding_bug_score+=16;
8671359b 272 } else if(bits_left != 1){
a61f8265
MN
273 int v= show_bits(&s->gb, 8);
274 v|= 0x7F >> (7-(bits_count&7));
8671359b 275
4940ed6a 276 if(v==0x7F && bits_left<=8)
a61f8265 277 s->padding_bug_score--;
4940ed6a
MN
278 else if(v==0x7F && ((get_bits_count(&s->gb)+8)&8) && bits_left<=16)
279 s->padding_bug_score+= 4;
a61f8265 280 else
115329f1
DB
281 s->padding_bug_score++;
282 }
a61f8265 283 }
115329f1 284
4940ed6a 285 if(s->workaround_bugs&FF_BUG_AUTODETECT){
503a4725 286 if(s->padding_bug_score > -2 && !s->data_partitioning /*&& (s->divx_version || !s->resync_marker)*/)
4940ed6a
MN
287 s->workaround_bugs |= FF_BUG_NO_PADDING;
288 else
289 s->workaround_bugs &= ~FF_BUG_NO_PADDING;
290 }
a61f8265 291
bb628dae 292 // handle formats which don't have unique end markers
cb7c98d6 293 if(s->msmpeg4_version || (s->workaround_bugs&FF_BUG_NO_PADDING)){ //FIXME perhaps solve this more cleanly
68f593b4 294 int left= s->gb.size_in_bits - get_bits_count(&s->gb);
4d2858de 295 int max_extra=7;
115329f1 296
4d2858de 297 /* no markers in M$ crap */
9701840b 298 if(s->msmpeg4_version && s->pict_type==FF_I_TYPE)
4d2858de 299 max_extra+= 17;
115329f1 300
4d2858de 301 /* buggy padding but the frame should still end approximately at the bitstream end */
047599a4 302 if((s->workaround_bugs&FF_BUG_NO_PADDING) && s->error_recognition>=3)
4d2858de 303 max_extra+= 48;
cb7c98d6 304 else if((s->workaround_bugs&FF_BUG_NO_PADDING))
4d2858de 305 max_extra+= 256*256*256*64;
115329f1 306
4d2858de 307 if(left>max_extra){
9b879566 308 av_log(s->avctx, AV_LOG_ERROR, "discarding %d junk bits at end, next would be %X\n", left, show_bits(&s->gb, 24));
4d2858de
MN
309 }
310 else if(left<0){
9b879566 311 av_log(s->avctx, AV_LOG_ERROR, "overreading %d bits\n", -left);
4d2858de 312 }else
46b4feec 313 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_END|DC_END|MV_END);
115329f1 314
4d2858de
MN
315 return 0;
316 }
a61f8265 317
115329f1 318 av_log(s->avctx, AV_LOG_ERROR, "slice end not reached but screenspace end (%d left %06X, score= %d)\n",
68f593b4 319 s->gb.size_in_bits - get_bits_count(&s->gb),
9b6a5b87 320 show_bits(&s->gb, 24), s->padding_bug_score);
115329f1 321
46b4feec
MN
322 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
323
4d2858de
MN
324 return -1;
325}
326
115329f1 327int ff_h263_decode_frame(AVCodecContext *avctx,
de6d9b64 328 void *data, int *data_size,
fbdad670 329 const uint8_t *buf, int buf_size)
de6d9b64
FB
330{
331 MpegEncContext *s = avctx->priv_data;
1df1df0b 332 int ret;
115329f1
DB
333 AVFrame *pict = data;
334
02734c6a
MN
335#ifdef PRINT_FRAME_TIME
336uint64_t time= rdtsc();
337#endif
de6d9b64 338#ifdef DEBUG
9bd0d79f 339 av_log(avctx, AV_LOG_DEBUG, "*****frame %d size=%d\n", avctx->frame_number, buf_size);
bdb4b698
MB
340 if(buf_size>0)
341 av_log(avctx, AV_LOG_DEBUG, "bytes=%x %x %x %x\n", buf[0], buf[1], buf[2], buf[3]);
de6d9b64 342#endif
b50eef3a 343 s->flags= avctx->flags;
303e50e6 344 s->flags2= avctx->flags2;
6733417a 345
e9174ba4 346 /* no supplementary picture */
de6d9b64 347 if (buf_size == 0) {
e9174ba4
MN
348 /* special case for last picture */
349 if (s->low_delay==0 && s->next_picture_ptr) {
350 *pict= *(AVFrame*)s->next_picture_ptr;
351 s->next_picture_ptr= NULL;
352
353 *data_size = sizeof(AVFrame);
354 }
355
de6d9b64
FB
356 return 0;
357 }
b7a22d84 358
d7425f59
MN
359 if(s->flags&CODEC_FLAG_TRUNCATED){
360 int next;
115329f1 361
49fb20cb 362 if(CONFIG_MPEG4_DECODER && s->codec_id==CODEC_ID_MPEG4){
e4cb187d 363 next= ff_mpeg4_find_frame_end(&s->parse_context, buf, buf_size);
49fb20cb 364 }else if(CONFIG_H263_DECODER && s->codec_id==CODEC_ID_H263){
c33d9814 365 next= ff_h263_find_frame_end(&s->parse_context, buf, buf_size);
d7425f59 366 }else{
160d679c 367 av_log(s->avctx, AV_LOG_ERROR, "this codec does not support truncated bitstreams\n");
d7425f59
MN
368 return -1;
369 }
115329f1 370
c53d2d90 371 if( ff_combine_frame(&s->parse_context, next, (const uint8_t **)&buf, &buf_size) < 0 )
d7425f59 372 return buf_size;
d7425f59 373 }
de6d9b64 374
115329f1 375
4a3d7fbc 376retry:
115329f1 377
fb204d4b 378 if(s->bitstream_buffer_size && (s->divx_packed || buf_size<20)){ //divx 5.01+/xvid frame reorder
68f593b4 379 init_get_bits(&s->gb, s->bitstream_buffer, s->bitstream_buffer_size*8);
51b8fd19 380 }else
68f593b4 381 init_get_bits(&s->gb, buf, buf_size*8);
4136dd24 382 s->bitstream_buffer_size=0;
de6d9b64 383
3a3d3a42 384 if (!s->context_initialized) {
46fd0de8 385 if (MPV_common_init(s) < 0) //we need the idct permutaton for reading a custom matrix
3a3d3a42
MN
386 return -1;
387 }
115329f1 388
755bfeab
DB
389 /* We need to set current_picture_ptr before reading the header,
390 * otherwise we cannot store anyting in there */
5f194811
MN
391 if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
392 int i= ff_find_unused_picture(s, 0);
393 s->current_picture_ptr= &s->picture[i];
394 }
115329f1 395
de6d9b64 396 /* let's go :-) */
49fb20cb 397 if (CONFIG_WMV2_DECODER && s->msmpeg4_version==5) {
1457ab52 398 ret= ff_wmv2_decode_picture_header(s);
49fb20cb 399 } else if (CONFIG_MSMPEG4_DECODER && s->msmpeg4_version) {
de6d9b64
FB
400 ret = msmpeg4_decode_picture_header(s);
401 } else if (s->h263_pred) {
b704e742
MN
402 if(s->avctx->extradata_size && s->picture_number==0){
403 GetBitContext gb;
115329f1 404
68f593b4 405 init_get_bits(&gb, s->avctx->extradata, s->avctx->extradata_size*8);
b704e742
MN
406 ret = ff_mpeg4_decode_picture_header(s, &gb);
407 }
408 ret = ff_mpeg4_decode_picture_header(s, &s->gb);
d55f7b65 409 } else if (s->codec_id == CODEC_ID_H263I) {
de6d9b64 410 ret = intel_h263_decode_picture_header(s);
d4f5d74a
GM
411 } else if (s->h263_flv) {
412 ret = flv_h263_decode_picture_header(s);
de6d9b64
FB
413 } else {
414 ret = h263_decode_picture_header(s);
488fa19a 415 }
115329f1 416
160d679c 417 if(ret==FRAME_SKIPPED) return get_consumed_bytes(s, buf_size);
ffba1dc0
MN
418
419 /* skip if the header was thrashed */
420 if (ret < 0){
9b879566 421 av_log(s->avctx, AV_LOG_ERROR, "header damaged\n");
ffba1dc0
MN
422 return -1;
423 }
115329f1 424
4e00e76b 425 avctx->has_b_frames= !s->low_delay;
115329f1 426
9b6a5b87 427 if(s->xvid_build==0 && s->divx_version==0 && s->lavc_build==0){
2bb6eba2
AJ
428 if(s->stream_codec_tag == AV_RL32("XVID") ||
429 s->codec_tag == AV_RL32("XVID") || s->codec_tag == AV_RL32("XVIX") ||
430 s->codec_tag == AV_RL32("RMP4"))
9b6a5b87 431 s->xvid_build= -1;
541ae140 432#if 0
2bb6eba2 433 if(s->codec_tag == AV_RL32("DIVX") && s->vo_type==0 && s->vol_control_parameters==1
115329f1 434 && s->padding_bug_score > 0 && s->low_delay) // XVID with modified fourcc
8fc6c2b5 435 s->xvid_build= -1;
541ae140
MN
436#endif
437 }
9b6a5b87 438
541ae140 439 if(s->xvid_build==0 && s->divx_version==0 && s->lavc_build==0){
2bb6eba2 440 if(s->codec_tag == AV_RL32("DIVX") && s->vo_type==0 && s->vol_control_parameters==0)
9b6a5b87
MN
441 s->divx_version= 400; //divx 4
442 }
115329f1 443
45cb4767
MN
444 if(s->xvid_build && s->divx_version){
445 s->divx_version=
446 s->divx_build= 0;
447 }
4d2858de
MN
448
449 if(s->workaround_bugs&FF_BUG_AUTODETECT){
2bb6eba2 450 if(s->codec_tag == AV_RL32("XVIX"))
4d2858de 451 s->workaround_bugs|= FF_BUG_XVID_ILACE;
9b6a5b87 452
2bb6eba2 453 if(s->codec_tag == AV_RL32("UMP4")){
4d2858de 454 s->workaround_bugs|= FF_BUG_UMP4;
4d2858de 455 }
03e93d35 456
58d1dc0e 457 if(s->divx_version>=500 && s->divx_build<1814){
03e93d35
MN
458 s->workaround_bugs|= FF_BUG_QPEL_CHROMA;
459 }
7da71a5c 460
58d1dc0e 461 if(s->divx_version>502 && s->divx_build<1814){
36df8805
MN
462 s->workaround_bugs|= FF_BUG_QPEL_CHROMA2;
463 }
464
a6a494fb
MN
465 if(s->xvid_build && s->xvid_build<=3)
466 s->padding_bug_score= 256*256*256*64;
115329f1 467
7da71a5c
MN
468 if(s->xvid_build && s->xvid_build<=1)
469 s->workaround_bugs|= FF_BUG_QPEL_CHROMA;
470
9b6a5b87
MN
471 if(s->xvid_build && s->xvid_build<=12)
472 s->workaround_bugs|= FF_BUG_EDGE;
473
4ccde216
MN
474 if(s->xvid_build && s->xvid_build<=32)
475 s->workaround_bugs|= FF_BUG_DC_CLIP;
476
db794953
MN
477#define SET_QPEL_FUNC(postfix1, postfix2) \
478 s->dsp.put_ ## postfix1 = ff_put_ ## postfix2;\
479 s->dsp.put_no_rnd_ ## postfix1 = ff_put_no_rnd_ ## postfix2;\
480 s->dsp.avg_ ## postfix1 = ff_avg_ ## postfix2;
481
482 if(s->lavc_build && s->lavc_build<4653)
483 s->workaround_bugs|= FF_BUG_STD_QPEL;
115329f1 484
c40c3482
MN
485 if(s->lavc_build && s->lavc_build<4655)
486 s->workaround_bugs|= FF_BUG_DIRECT_BLOCKSIZE;
487
8025405f 488 if(s->lavc_build && s->lavc_build<4670){
6674a126
MN
489 s->workaround_bugs|= FF_BUG_EDGE;
490 }
115329f1 491
4ccde216
MN
492 if(s->lavc_build && s->lavc_build<=4712)
493 s->workaround_bugs|= FF_BUG_DC_CLIP;
6674a126 494
c40c3482
MN
495 if(s->divx_version)
496 s->workaround_bugs|= FF_BUG_DIRECT_BLOCKSIZE;
a61f8265 497//printf("padding_bug_score: %d\n", s->padding_bug_score);
d671e2fe
MN
498 if(s->divx_version==501 && s->divx_build==20020416)
499 s->padding_bug_score= 256*256*256*64;
1c6dcb0f 500
6674a126 501 if(s->divx_version && s->divx_version<500){
1c6dcb0f
MN
502 s->workaround_bugs|= FF_BUG_EDGE;
503 }
115329f1 504
b44bdf7e
MN
505 if(s->divx_version)
506 s->workaround_bugs|= FF_BUG_HPEL_CHROMA;
a61f8265 507#if 0
4d2858de 508 if(s->divx_version==500)
d671e2fe 509 s->padding_bug_score= 256*256*256*64;
4d2858de
MN
510
511 /* very ugly XVID padding bug detection FIXME/XXX solve this differently
ca74c0a1 512 * Let us hope this at least works.
4d2858de
MN
513 */
514 if( s->resync_marker==0 && s->data_partitioning==0 && s->divx_version==0
515 && s->codec_id==CODEC_ID_MPEG4 && s->vo_type==0)
516 s->workaround_bugs|= FF_BUG_NO_PADDING;
115329f1 517
4d2858de
MN
518 if(s->lavc_build && s->lavc_build<4609) //FIXME not sure about the version num but a 4609 file seems ok
519 s->workaround_bugs|= FF_BUG_NO_PADDING;
a61f8265 520#endif
4d2858de 521 }
115329f1 522
db794953
MN
523 if(s->workaround_bugs& FF_BUG_STD_QPEL){
524 SET_QPEL_FUNC(qpel_pixels_tab[0][ 5], qpel16_mc11_old_c)
525 SET_QPEL_FUNC(qpel_pixels_tab[0][ 7], qpel16_mc31_old_c)
526 SET_QPEL_FUNC(qpel_pixels_tab[0][ 9], qpel16_mc12_old_c)
527 SET_QPEL_FUNC(qpel_pixels_tab[0][11], qpel16_mc32_old_c)
528 SET_QPEL_FUNC(qpel_pixels_tab[0][13], qpel16_mc13_old_c)
529 SET_QPEL_FUNC(qpel_pixels_tab[0][15], qpel16_mc33_old_c)
530
531 SET_QPEL_FUNC(qpel_pixels_tab[1][ 5], qpel8_mc11_old_c)
532 SET_QPEL_FUNC(qpel_pixels_tab[1][ 7], qpel8_mc31_old_c)
533 SET_QPEL_FUNC(qpel_pixels_tab[1][ 9], qpel8_mc12_old_c)
534 SET_QPEL_FUNC(qpel_pixels_tab[1][11], qpel8_mc32_old_c)
535 SET_QPEL_FUNC(qpel_pixels_tab[1][13], qpel8_mc13_old_c)
536 SET_QPEL_FUNC(qpel_pixels_tab[1][15], qpel8_mc33_old_c)
537 }
4d2858de 538
8fc6c2b5 539 if(avctx->debug & FF_DEBUG_BUGS)
115329f1 540 av_log(s->avctx, AV_LOG_DEBUG, "bugs: %X lavc_build:%d xvid_build:%d divx_version:%d divx_build:%d %s\n",
8fc6c2b5
MN
541 s->workaround_bugs, s->lavc_build, s->xvid_build, s->divx_version, s->divx_build,
542 s->divx_packed ? "p" : "");
115329f1 543
38274ea2
MN
544#if 0 // dump bits per frame / qp / complexity
545{
546 static FILE *f=NULL;
547 if(!f) f=fopen("rate_qp_cplx.txt", "w");
32b90921 548 fprintf(f, "%d %d %f\n", buf_size, s->qscale, buf_size*(double)s->qscale);
38274ea2
MN
549}
550#endif
b442a92f 551
b250f9c6 552#if HAVE_MMX
82d1605f 553 if(s->codec_id == CODEC_ID_MPEG4 && s->xvid_build && avctx->idct_algo == FF_IDCT_AUTO && (mm_flags & FF_MM_MMX)){
ddabdfef 554 avctx->idct_algo= FF_IDCT_XVIDMMX;
cfeae977 555 avctx->coded_width= 0; // force reinit
6baac1af
MN
556// dsputil_init(&s->dsp, avctx);
557 s->picture_number=0;
ee0c00d3 558 }
b442a92f
AB
559#endif
560
488fa19a 561 /* After H263 & mpeg4 header decode we have the height, width,*/
9eaa4690
J
562 /* and other parameters. So then we could init the picture */
563 /* FIXME: By the way H263 decoder is evolving it should have */
564 /* an H263EncContext */
115329f1
DB
565
566 if ( s->width != avctx->coded_width
21adafec 567 || s->height != avctx->coded_height) {
93a21abd 568 /* H.263 could change picture size any time */
bcc7125e
MN
569 ParseContext pc= s->parse_context; //FIXME move these demuxng hack to avformat
570 s->parse_context.buffer=0;
93a21abd 571 MPV_common_end(s);
bcc7125e 572 s->parse_context= pc;
93a21abd 573 }
488fa19a 574 if (!s->context_initialized) {
21adafec 575 avcodec_set_dimensions(avctx, s->width, s->height);
4d2858de 576
4a3d7fbc 577 goto retry;
de6d9b64 578 }
35aa136a 579
71a3dff9 580 if((s->codec_id==CODEC_ID_H263 || s->codec_id==CODEC_ID_H263P || s->codec_id == CODEC_ID_H263I))
35aa136a 581 s->gob_index = ff_h263_get_gob_height(s);
115329f1 582
1e491e29
MN
583 // for hurry_up==5
584 s->current_picture.pict_type= s->pict_type;
9701840b 585 s->current_picture.key_frame= s->pict_type == FF_I_TYPE;
347ae22e 586
bb628dae 587 /* skip B-frames if we don't have reference frames */
9701840b 588 if(s->last_picture_ptr==NULL && (s->pict_type==FF_B_TYPE || s->dropable)) return get_consumed_bytes(s, buf_size);
2417652e 589 /* skip b frames if we are in a hurry */
9701840b
AJ
590 if(avctx->hurry_up && s->pict_type==FF_B_TYPE) return get_consumed_bytes(s, buf_size);
591 if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==FF_B_TYPE)
592 || (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=FF_I_TYPE)
115329f1 593 || avctx->skip_frame >= AVDISCARD_ALL)
8c3eba7c 594 return get_consumed_bytes(s, buf_size);
347ae22e 595 /* skip everything if we are in a hurry>=5 */
f8fd15e0 596 if(avctx->hurry_up>=5) return get_consumed_bytes(s, buf_size);
115329f1 597
6733417a 598 if(s->next_p_frame_damaged){
9701840b 599 if(s->pict_type==FF_B_TYPE)
7866eeff 600 return get_consumed_bytes(s, buf_size);
6733417a
MN
601 else
602 s->next_p_frame_damaged=0;
603 }
604
9701840b 605 if((s->avctx->flags2 & CODEC_FLAG2_FAST) && s->pict_type==FF_B_TYPE){
2833fc46
LM
606 s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
607 s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
9701840b 608 }else if((!s->no_rounding) || s->pict_type==FF_B_TYPE){
a1b13cf5 609 s->me.qpel_put= s->dsp.put_qpel_pixels_tab;
2833fc46
LM
610 s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab;
611 }else{
a1b13cf5 612 s->me.qpel_put= s->dsp.put_no_rnd_qpel_pixels_tab;
2833fc46
LM
613 s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab;
614 }
615
d6db1c9c
MN
616 if(MPV_frame_start(s, avctx) < 0)
617 return -1;
de6d9b64
FB
618
619#ifdef DEBUG
267f7edc 620 av_log(avctx, AV_LOG_DEBUG, "qscale=%d\n", s->qscale);
de6d9b64
FB
621#endif
622
46b4feec 623 ff_er_frame_start(s);
115329f1 624
487bce53 625 //the second part of the wmv2 header contains the MB skip bits which are stored in current_picture->mb_type
755bfeab 626 //which is not available before MPV_frame_start()
49fb20cb 627 if (CONFIG_WMV2_DECODER && s->msmpeg4_version==5){
9abc7e0f
MN
628 ret = ff_wmv2_decode_secondary_picture_header(s);
629 if(ret<0) return ret;
630 if(ret==1) goto intrax8_decoded;
487bce53
MN
631 }
632
de6d9b64 633 /* decode each macroblock */
115329f1 634 s->mb_x=0;
4d2858de 635 s->mb_y=0;
115329f1 636
4d2858de 637 decode_slice(s);
487bce53 638 while(s->mb_y<s->mb_height){
4d2858de 639 if(s->msmpeg4_version){
b34397b4 640 if(s->slice_height==0 || s->mb_x!=0 || (s->mb_y%s->slice_height)!=0 || get_bits_count(&s->gb) > s->gb.size_in_bits)
4d2858de
MN
641 break;
642 }else{
643 if(ff_h263_resync(s)<0)
644 break;
6733417a 645 }
115329f1 646
28269849 647 if(s->msmpeg4_version<4 && s->h263_pred)
4d2858de 648 ff_mpeg4_clean_buffers(s);
649c00c9 649
4d2858de 650 decode_slice(s);
de6d9b64 651 }
8b32880c 652
9701840b 653 if (s->h263_msmpeg4 && s->msmpeg4_version<4 && s->pict_type==FF_I_TYPE)
49fb20cb 654 if(!CONFIG_MSMPEG4_DECODER || msmpeg4_decode_ext_header(s, buf_size) < 0){
1e491e29
MN
655 s->error_status_table[s->mb_num-1]= AC_ERROR|DC_ERROR|MV_ERROR;
656 }
115329f1 657
eec1c6b9 658 /* divx 5.01+ bistream reorder stuff */
d5a21172 659 if(s->codec_id==CODEC_ID_MPEG4 && s->bitstream_buffer_size==0 && s->divx_packed){
6733417a 660 int current_pos= get_bits_count(&s->gb)>>3;
fb204d4b 661 int startcode_found=0;
115329f1 662
0ecca7a4 663 if(buf_size - current_pos > 5){
6733417a 664 int i;
7866eeff 665 for(i=current_pos; i<buf_size-3; i++){
6733417a
MN
666 if(buf[i]==0 && buf[i+1]==0 && buf[i+2]==1 && buf[i+3]==0xB6){
667 startcode_found=1;
668 break;
669 }
670 }
fb204d4b
MN
671 }
672 if(s->gb.buffer == s->bitstream_buffer && buf_size>20){ //xvid style
673 startcode_found=1;
674 current_pos=0;
675 }
676
677 if(startcode_found){
0ecca7a4 678 s->bitstream_buffer= av_fast_realloc(
115329f1
DB
679 s->bitstream_buffer,
680 &s->allocated_bitstream_buffer_size,
0ecca7a4 681 buf_size - current_pos + FF_INPUT_BUFFER_PADDING_SIZE);
fb204d4b
MN
682 memcpy(s->bitstream_buffer, buf + current_pos, buf_size - current_pos);
683 s->bitstream_buffer_size= buf_size - current_pos;
6733417a
MN
684 }
685 }
686
9abc7e0f 687intrax8_decoded:
46b4feec 688 ff_er_frame_end(s);
4d2858de 689
de6d9b64 690 MPV_frame_end(s);
db794953 691
db6e7795
MN
692assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
693assert(s->current_picture.pict_type == s->pict_type);
9701840b 694 if (s->pict_type == FF_B_TYPE || s->low_delay) {
5430b070
MN
695 *pict= *(AVFrame*)s->current_picture_ptr;
696 } else if (s->last_picture_ptr != NULL) {
697 *pict= *(AVFrame*)s->last_picture_ptr;
698 }
699
700 if(s->last_picture_ptr || s->low_delay){
701 *data_size = sizeof(AVFrame);
0c9bbaec 702 ff_print_debug_info(s, pict);
6f91bcd1 703 }
8fc69895 704
81401c1f 705 /* Return the Picture timestamp as the frame number */
52b541ad 706 /* we subtract 1 because it is added on utils.c */
81401c1f
J
707 avctx->frame_number = s->picture_number - 1;
708
02734c6a 709#ifdef PRINT_FRAME_TIME
949b1a13 710av_log(avctx, AV_LOG_DEBUG, "%"PRId64"\n", rdtsc()-time);
02734c6a 711#endif
d07f9043 712
7866eeff 713 return get_consumed_bytes(s, buf_size);
de6d9b64
FB
714}
715
bf89e6b1
FB
716AVCodec mpeg4_decoder = {
717 "mpeg4",
de6d9b64 718 CODEC_TYPE_VIDEO,
bf89e6b1 719 CODEC_ID_MPEG4,
de6d9b64 720 sizeof(MpegEncContext),
1457ab52 721 ff_h263_decode_init,
de6d9b64 722 NULL,
1457ab52
MN
723 ff_h263_decode_end,
724 ff_h263_decode_frame,
934982c4 725 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
7a06ff14 726 .flush= ff_mpeg_flush,
fe4bf374 727 .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2"),
de6d9b64
FB
728};
729
730AVCodec h263_decoder = {
731 "h263",
732 CODEC_TYPE_VIDEO,
733 CODEC_ID_H263,
734 sizeof(MpegEncContext),
1457ab52 735 ff_h263_decode_init,
de6d9b64 736 NULL,
1457ab52
MN
737 ff_h263_decode_end,
738 ff_h263_decode_frame,
934982c4 739 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
7a06ff14 740 .flush= ff_mpeg_flush,
57be00be 741 .long_name= NULL_IF_CONFIG_SMALL("H.263 / H.263-1996, H.263+ / H.263-1998"),
de6d9b64
FB
742};
743
84afee34
MN
744AVCodec msmpeg4v1_decoder = {
745 "msmpeg4v1",
746 CODEC_TYPE_VIDEO,
747 CODEC_ID_MSMPEG4V1,
748 sizeof(MpegEncContext),
1457ab52 749 ff_h263_decode_init,
84afee34 750 NULL,
1457ab52
MN
751 ff_h263_decode_end,
752 ff_h263_decode_frame,
93a21abd 753 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
fe4bf374 754 .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 1"),
84afee34
MN
755};
756
757AVCodec msmpeg4v2_decoder = {
758 "msmpeg4v2",
759 CODEC_TYPE_VIDEO,
760 CODEC_ID_MSMPEG4V2,
761 sizeof(MpegEncContext),
1457ab52 762 ff_h263_decode_init,
84afee34 763 NULL,
1457ab52
MN
764 ff_h263_decode_end,
765 ff_h263_decode_frame,
93a21abd 766 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
fe4bf374 767 .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 2"),
84afee34
MN
768};
769
770AVCodec msmpeg4v3_decoder = {
de6d9b64
FB
771 "msmpeg4",
772 CODEC_TYPE_VIDEO,
84afee34 773 CODEC_ID_MSMPEG4V3,
de6d9b64 774 sizeof(MpegEncContext),
1457ab52 775 ff_h263_decode_init,
de6d9b64 776 NULL,
1457ab52
MN
777 ff_h263_decode_end,
778 ff_h263_decode_frame,
93a21abd 779 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
fe4bf374 780 .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 3"),
de6d9b64
FB
781};
782
e1a9dbff
MN
783AVCodec wmv1_decoder = {
784 "wmv1",
785 CODEC_TYPE_VIDEO,
786 CODEC_ID_WMV1,
787 sizeof(MpegEncContext),
1457ab52 788 ff_h263_decode_init,
8f8402e4 789 NULL,
1457ab52
MN
790 ff_h263_decode_end,
791 ff_h263_decode_frame,
93a21abd 792 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
fe4bf374 793 .long_name= NULL_IF_CONFIG_SMALL("Windows Media Video 7"),
8f8402e4
MN
794};
795
de6d9b64
FB
796AVCodec h263i_decoder = {
797 "h263i",
798 CODEC_TYPE_VIDEO,
799 CODEC_ID_H263I,
800 sizeof(MpegEncContext),
1457ab52 801 ff_h263_decode_init,
de6d9b64 802 NULL,
1457ab52
MN
803 ff_h263_decode_end,
804 ff_h263_decode_frame,
93a21abd 805 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
e1b6bdbb 806 .long_name = NULL_IF_CONFIG_SMALL("Intel H.263"),
de6d9b64
FB
807};
808
d4f5d74a
GM
809AVCodec flv_decoder = {
810 "flv",
811 CODEC_TYPE_VIDEO,
812 CODEC_ID_FLV1,
813 sizeof(MpegEncContext),
814 ff_h263_decode_init,
815 NULL,
816 ff_h263_decode_end,
817 ff_h263_decode_frame,
038f846e 818 CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
fe4bf374 819 .long_name= NULL_IF_CONFIG_SMALL("Flash Video"),
d4f5d74a 820};