analyze end condition must match r_fps selection condition
[libav.git] / libavformat / asf.c
CommitLineData
de6d9b64 1/*
7fbde343 2 * ASF compatible demuxer
19720f15 3 * Copyright (c) 2000, 2001 Fabrice Bellard.
de6d9b64 4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
19720f15
FB
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
de6d9b64 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
de6d9b64 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19720f15
FB
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
de6d9b64 16 *
19720f15 17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
de6d9b64 20 */
de6d9b64 21#include "avformat.h"
9d9f4119 22#include "riff.h"
f80c1ac0 23#include "mpegaudio.h"
542993b0 24#include "asf.h"
db5c43b4 25#include "common.h"
de6d9b64 26
580fb5e7
MN
27#undef NDEBUG
28#include <assert.h>
29
615b92fd 30#define FRAME_HEADER_SIZE 17
115329f1 31// Fix Me! FRAME_HEADER_SIZE may be different.
615b92fd 32
de6d9b64 33static const GUID index_guid = {
24c14d6d 34 0x90, 0x08, 0x00, 0x33, 0xb1, 0xe5, 0xcf, 0x11, 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb
de6d9b64
FB
35};
36
0e3b6a6f
RM
37static const GUID stream_bitrate_guid = { /* (http://get.to/sdp) */
38 0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2
39};
de6d9b64
FB
40/**********************************/
41/* decoding */
42
43//#define DEBUG
44
45#ifdef DEBUG
5082f759
FR
46#define PRINT_IF_GUID(g,cmp) \
47if (!memcmp(g, &cmp, sizeof(GUID))) \
48 printf("(GUID: %s) ", #cmp)
49
de6d9b64
FB
50static void print_guid(const GUID *g)
51{
52 int i;
5082f759
FR
53 PRINT_IF_GUID(g, asf_header);
54 else PRINT_IF_GUID(g, file_header);
55 else PRINT_IF_GUID(g, stream_header);
56 else PRINT_IF_GUID(g, audio_stream);
57 else PRINT_IF_GUID(g, audio_conceal_none);
58 else PRINT_IF_GUID(g, video_stream);
59 else PRINT_IF_GUID(g, video_conceal_none);
ae38261e 60 else PRINT_IF_GUID(g, command_stream);
5082f759
FR
61 else PRINT_IF_GUID(g, comment_header);
62 else PRINT_IF_GUID(g, codec_comment_header);
63 else PRINT_IF_GUID(g, codec_comment1_header);
64 else PRINT_IF_GUID(g, data_header);
65 else PRINT_IF_GUID(g, index_guid);
66 else PRINT_IF_GUID(g, head1_guid);
67 else PRINT_IF_GUID(g, head2_guid);
68 else PRINT_IF_GUID(g, my_guid);
88141c91
MN
69 else PRINT_IF_GUID(g, ext_stream_header);
70 else PRINT_IF_GUID(g, extended_content_header);
71 else PRINT_IF_GUID(g, ext_stream_embed_stream_header);
72 else PRINT_IF_GUID(g, ext_stream_audio_stream);
30e88789 73 else PRINT_IF_GUID(g, metadata_header);
0e3b6a6f 74 else PRINT_IF_GUID(g, stream_bitrate_guid);
5082f759
FR
75 else
76 printf("(GUID: unknown) ");
24c14d6d
MN
77 for(i=0;i<16;i++)
78 printf(" 0x%02x,", (*g)[i]);
de6d9b64
FB
79 printf("}\n");
80}
6df84c3a 81#undef PRINT_IF_GUID
de6d9b64
FB
82#endif
83
84static void get_guid(ByteIOContext *s, GUID *g)
85{
24c14d6d
MN
86 assert(sizeof(*g) == 16);
87 get_buffer(s, g, sizeof(*g));
de6d9b64
FB
88}
89
90#if 0
91static void get_str16(ByteIOContext *pb, char *buf, int buf_size)
92{
93 int len, c;
94 char *q;
95
96 len = get_le16(pb);
97 q = buf;
98 while (len > 0) {
99 c = get_le16(pb);
100 if ((q - buf) < buf_size - 1)
101 *q++ = c;
102 len--;
103 }
104 *q = '\0';
105}
106#endif
107
108static void get_str16_nolen(ByteIOContext *pb, int len, char *buf, int buf_size)
109{
db5c43b4
ZM
110 char* q = buf;
111 len /= 2;
112 while (len--) {
113 uint8_t tmp;
114 PUT_UTF8(get_le16(pb), tmp, if (q - buf < buf_size - 1) *q++ = tmp;)
de6d9b64
FB
115 }
116 *q = '\0';
117}
118
c9a65ca8
FB
119static int asf_probe(AVProbeData *pd)
120{
c9a65ca8
FB
121 /* check file header */
122 if (pd->buf_size <= 32)
123 return 0;
c9a65ca8 124
24c14d6d 125 if (!memcmp(pd->buf, &asf_header, sizeof(GUID)))
c9a65ca8
FB
126 return AVPROBE_SCORE_MAX;
127 else
128 return 0;
129}
130
30e88789
MN
131static int get_value(ByteIOContext *pb, int type){
132 switch(type){
133 case 2: return get_le32(pb);
134 case 3: return get_le32(pb);
135 case 4: return get_le64(pb);
136 case 5: return get_le16(pb);
137 default:return INT_MIN;
138 }
139}
140
de6d9b64
FB
141static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
142{
c9a65ca8 143 ASFContext *asf = s->priv_data;
de6d9b64
FB
144 GUID g;
145 ByteIOContext *pb = &s->pb;
146 AVStream *st;
147 ASFStream *asf_st;
e095026a 148 int size, i;
0c1a9eda 149 int64_t gsize;
30e88789
MN
150 AVRational dar[128];
151
152 memset(dar, 0, sizeof(dar));
de6d9b64 153
de6d9b64
FB
154 get_guid(pb, &g);
155 if (memcmp(&g, &asf_header, sizeof(GUID)))
156 goto fail;
157 get_le64(pb);
158 get_le32(pb);
159 get_byte(pb);
160 get_byte(pb);
2141dc37 161 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
de6d9b64
FB
162 for(;;) {
163 get_guid(pb, &g);
164 gsize = get_le64(pb);
165#ifdef DEBUG
949b1a13 166 printf("%08"PRIx64": ", url_ftell(pb) - 24);
de6d9b64 167 print_guid(&g);
949b1a13 168 printf(" size=0x%"PRIx64"\n", gsize);
de6d9b64 169#endif
09d9672a
MN
170 if (!memcmp(&g, &data_header, sizeof(GUID))) {
171 asf->data_object_offset = url_ftell(pb);
172 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
173 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
174 asf->data_object_size = gsize - 24;
175 } else {
176 asf->data_object_size = (uint64_t)-1;
177 }
178 break;
179 }
de6d9b64
FB
180 if (gsize < 24)
181 goto fail;
182 if (!memcmp(&g, &file_header, sizeof(GUID))) {
2a10020b 183 get_guid(pb, &asf->hdr.guid);
bb270c08
DB
184 asf->hdr.file_size = get_le64(pb);
185 asf->hdr.create_time = get_le64(pb);
6bb2a2df 186 asf->nb_packets = get_le64(pb);
bb270c08
DB
187 asf->hdr.send_time = get_le64(pb);
188 asf->hdr.play_time = get_le64(pb);
189 asf->hdr.preroll = get_le32(pb);
190 asf->hdr.ignore = get_le32(pb);
191 asf->hdr.flags = get_le32(pb);
192 asf->hdr.min_pktsize = get_le32(pb);
193 asf->hdr.max_pktsize = get_le32(pb);
194 asf->hdr.max_bitrate = get_le32(pb);
195 asf->packet_size = asf->hdr.max_pktsize;
de6d9b64 196 } else if (!memcmp(&g, &stream_header, sizeof(GUID))) {
7ad5455c
MN
197 int type, type_specific_size, sizeX;
198 uint64_t total_size;
de6d9b64 199 unsigned int tag1;
0c1a9eda 200 int64_t pos1, pos2;
88141c91 201 int test_for_ext_stream_audio;
2a10020b 202
de6d9b64
FB
203 pos1 = url_ftell(pb);
204
247eadca 205 st = av_new_stream(s, 0);
de6d9b64
FB
206 if (!st)
207 goto fail;
9ee91c2f 208 av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
de6d9b64
FB
209 asf_st = av_mallocz(sizeof(ASFStream));
210 if (!asf_st)
211 goto fail;
212 st->priv_data = asf_st;
c0df9d75 213 st->start_time = asf->hdr.preroll;
73fe1052
RM
214 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
215 st->duration = asf->hdr.send_time /
216 (10000000 / 1000) - st->start_time;
217 }
de6d9b64 218 get_guid(pb, &g);
88141c91
MN
219
220 test_for_ext_stream_audio = 0;
de6d9b64
FB
221 if (!memcmp(&g, &audio_stream, sizeof(GUID))) {
222 type = CODEC_TYPE_AUDIO;
223 } else if (!memcmp(&g, &video_stream, sizeof(GUID))) {
224 type = CODEC_TYPE_VIDEO;
ae38261e
MB
225 } else if (!memcmp(&g, &command_stream, sizeof(GUID))) {
226 type = CODEC_TYPE_UNKNOWN;
88141c91
MN
227 } else if (!memcmp(&g, &ext_stream_embed_stream_header, sizeof(GUID))) {
228 test_for_ext_stream_audio = 1;
229 type = CODEC_TYPE_UNKNOWN;
de6d9b64
FB
230 } else {
231 goto fail;
232 }
233 get_guid(pb, &g);
234 total_size = get_le64(pb);
2e7973bb 235 type_specific_size = get_le32(pb);
de6d9b64 236 get_le32(pb);
bb270c08 237 st->id = get_le16(pb) & 0x7f; /* stream id */
2a10020b 238 // mapping of asf ID to AV stream ID;
247eadca 239 asf->asfid2avid[st->id] = s->nb_streams - 1;
2a10020b 240
de6d9b64 241 get_le32(pb);
88141c91
MN
242
243 if (test_for_ext_stream_audio) {
244 get_guid(pb, &g);
245 if (!memcmp(&g, &ext_stream_audio_stream, sizeof(GUID))) {
246 type = CODEC_TYPE_AUDIO;
247 get_guid(pb, &g);
248 get_le32(pb);
249 get_le32(pb);
250 get_le32(pb);
251 get_guid(pb, &g);
252 get_le32(pb);
253 }
254 }
255
bb270c08 256 st->codec->codec_type = type;
de6d9b64 257 if (type == CODEC_TYPE_AUDIO) {
01f4895c 258 get_wav_header(pb, st->codec, type_specific_size);
afda223c 259 st->need_parsing = 1;
bb270c08
DB
260 /* We have to init the frame size at some point .... */
261 pos2 = url_ftell(pb);
b9c6d01b 262 if (gsize >= (pos2 + 8 - pos1 + 24)) {
bb270c08
DB
263 asf_st->ds_span = get_byte(pb);
264 asf_st->ds_packet_size = get_le16(pb);
265 asf_st->ds_chunk_size = get_le16(pb);
6bb2a2df
MN
266 get_le16(pb); //ds_data_size
267 get_byte(pb); //ds_silence_data
bb270c08
DB
268 }
269 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
270 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
271 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
272 if (asf_st->ds_span > 1) {
273 if (!asf_st->ds_chunk_size
05219463
MN
274 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
275 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
bb270c08
DB
276 asf_st->ds_span = 0; // disable descrambling
277 }
01f4895c 278 switch (st->codec->codec_id) {
80783dc2 279 case CODEC_ID_MP3:
01f4895c 280 st->codec->frame_size = MPA_FRAME_SIZE;
f80c1ac0
PG
281 break;
282 case CODEC_ID_PCM_S16LE:
283 case CODEC_ID_PCM_S16BE:
284 case CODEC_ID_PCM_U16LE:
285 case CODEC_ID_PCM_U16BE:
286 case CODEC_ID_PCM_S8:
287 case CODEC_ID_PCM_U8:
288 case CODEC_ID_PCM_ALAW:
289 case CODEC_ID_PCM_MULAW:
01f4895c 290 st->codec->frame_size = 1;
f80c1ac0
PG
291 break;
292 default:
293 /* This is probably wrong, but it prevents a crash later */
01f4895c 294 st->codec->frame_size = 1;
f80c1ac0
PG
295 break;
296 }
88141c91 297 } else if (type == CODEC_TYPE_VIDEO) {
bb270c08 298 get_le32(pb);
de6d9b64
FB
299 get_le32(pb);
300 get_byte(pb);
301 size = get_le16(pb); /* size */
0ffd77b9 302 sizeX= get_le32(pb); /* size */
01f4895c 303 st->codec->width = get_le32(pb);
bb270c08 304 st->codec->height = get_le32(pb);
2a10020b 305 /* not available for asf */
de6d9b64 306 get_le16(pb); /* panes */
bb270c08 307 st->codec->bits_per_sample = get_le16(pb); /* depth */
de6d9b64 308 tag1 = get_le32(pb);
bb270c08 309 url_fskip(pb, 20);
0ffd77b9
MN
310// av_log(NULL, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
311 size= sizeX;
bb270c08
DB
312 if (size > 40) {
313 st->codec->extradata_size = size - 40;
314 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
315 get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
316 }
5e29abf8
RT
317
318 /* Extract palette from extradata if bpp <= 8 */
319 /* This code assumes that extradata contains only palette */
320 /* This is true for all paletted codecs implemented in ffmpeg */
01f4895c
MN
321 if (st->codec->extradata_size && (st->codec->bits_per_sample <= 8)) {
322 st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
5e29abf8 323#ifdef WORDS_BIGENDIAN
01f4895c
MN
324 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
325 st->codec->palctrl->palette[i] = bswap_32(((uint32_t*)st->codec->extradata)[i]);
5e29abf8 326#else
01f4895c
MN
327 memcpy(st->codec->palctrl->palette, st->codec->extradata,
328 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
5e29abf8 329#endif
01f4895c 330 st->codec->palctrl->palette_changed = 1;
5e29abf8
RT
331 }
332
01f4895c 333 st->codec->codec_tag = tag1;
bb270c08 334 st->codec->codec_id = codec_get_id(codec_bmp_tags, tag1);
afbb5ce4
MN
335 if(tag1 == MKTAG('D', 'V', 'R', ' '))
336 st->need_parsing = 1;
de6d9b64
FB
337 }
338 pos2 = url_ftell(pb);
339 url_fskip(pb, gsize - (pos2 - pos1 + 24));
de6d9b64
FB
340 } else if (!memcmp(&g, &comment_header, sizeof(GUID))) {
341 int len1, len2, len3, len4, len5;
342
343 len1 = get_le16(pb);
344 len2 = get_le16(pb);
345 len3 = get_le16(pb);
346 len4 = get_le16(pb);
347 len5 = get_le16(pb);
4e15cc8b
MN
348 get_str16_nolen(pb, len1, s->title , sizeof(s->title));
349 get_str16_nolen(pb, len2, s->author , sizeof(s->author));
de6d9b64 350 get_str16_nolen(pb, len3, s->copyright, sizeof(s->copyright));
4e15cc8b 351 get_str16_nolen(pb, len4, s->comment , sizeof(s->comment));
bb270c08 352 url_fskip(pb, len5);
0e3b6a6f
RM
353 } else if (!memcmp(&g, &stream_bitrate_guid, sizeof(GUID))) {
354 int stream_count = get_le16(pb);
355 int j;
356
357// av_log(NULL, AV_LOG_ERROR, "stream bitrate properties\n");
358// av_log(NULL, AV_LOG_ERROR, "streams %d\n", streams);
359 for(j = 0; j < stream_count; j++) {
360 int flags, bitrate, stream_id;
361
362 flags= get_le16(pb);
363 bitrate= get_le32(pb);
364 stream_id= (flags & 0x7f);
365// av_log(NULL, AV_LOG_ERROR, "flags: 0x%x stream id %d, bitrate %d\n", flags, stream_id, bitrate);
366 asf->stream_bitrates[stream_id-1]= bitrate;
367 }
d13431cd
KK
368 } else if (!memcmp(&g, &extended_content_header, sizeof(GUID))) {
369 int desc_count, i;
370
371 desc_count = get_le16(pb);
372 for(i=0;i<desc_count;i++)
373 {
052aa2ad
SH
374 int name_len,value_type,value_len;
375 uint64_t value_num = 0;
d045b8c1 376 char name[1024];
d13431cd
KK
377
378 name_len = get_le16(pb);
d045b8c1 379 get_str16_nolen(pb, name_len, name, sizeof(name));
d13431cd
KK
380 value_type = get_le16(pb);
381 value_len = get_le16(pb);
382 if ((value_type == 0) || (value_type == 1)) // unicode or byte
383 {
5e2a4855
MN
384 if (!strcmp(name,"WM/AlbumTitle")) get_str16_nolen(pb, value_len, s->album, sizeof(s->album));
385 else if(!strcmp(name,"WM/Genre" )) get_str16_nolen(pb, value_len, s->genre, sizeof(s->genre));
386 else url_fskip(pb, value_len);
d13431cd 387 }
724dc20c 388 if ((value_type >= 2) && (value_type <= 5)) // boolean or DWORD or QWORD or WORD
d13431cd 389 {
30e88789 390 value_num= get_value(pb, value_type);
4e15cc8b
MN
391 if (!strcmp(name,"WM/Track" )) s->track = value_num + 1;
392 if (!strcmp(name,"WM/TrackNumber")) s->track = value_num;
d13431cd 393 }
d13431cd 394 }
30e88789
MN
395 } else if (!memcmp(&g, &metadata_header, sizeof(GUID))) {
396 int n, stream_num, name_len, value_len, value_type, value_num;
397 n = get_le16(pb);
398
399 for(i=0;i<n;i++) {
400 char name[1024];
401
402 get_le16(pb); //lang_list_index
403 stream_num= get_le16(pb);
404 name_len= get_le16(pb);
405 value_type= get_le16(pb);
406 value_len= get_le32(pb);
407
408 get_str16_nolen(pb, name_len, name, sizeof(name));
409//av_log(NULL, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
410 value_num= get_le16(pb);//we should use get_value() here but it doesnt work 2 is le16 here but le32 elsewhere
411 url_fskip(pb, value_len - 2);
412
413 if(stream_num<128){
414 if (!strcmp(name, "AspectRatioX")) dar[stream_num].num= value_num;
415 else if(!strcmp(name, "AspectRatioY")) dar[stream_num].den= value_num;
416 }
417 }
88141c91
MN
418 } else if (!memcmp(&g, &ext_stream_header, sizeof(GUID))) {
419 int ext_len, payload_ext_ct, stream_ct;
0b339acb 420 uint32_t ext_d;
1bd86246 421 int64_t pos_ex_st;
88141c91
MN
422 pos_ex_st = url_ftell(pb);
423
de3ae959
MN
424 get_le64(pb); // starttime
425 get_le64(pb); // endtime
0b339acb 426 get_le32(pb); // leak-datarate
de3ae959
MN
427 get_le32(pb); // bucket-datasize
428 get_le32(pb); // init-bucket-fullness
429 get_le32(pb); // alt-leak-datarate
430 get_le32(pb); // alt-bucket-datasize
431 get_le32(pb); // alt-init-bucket-fullness
432 get_le32(pb); // max-object-size
433 get_le32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
0b339acb 434 get_le16(pb); // stream-num
de3ae959
MN
435 get_le16(pb); // stream-language-id-index
436 get_le64(pb); // avg frametime in 100ns units
437 stream_ct = get_le16(pb); //stream-name-count
438 payload_ext_ct = get_le16(pb); //payload-extension-system-count
88141c91
MN
439
440 for (i=0; i<stream_ct; i++){
441 get_le16(pb);
442 ext_len = get_le16(pb);
443 url_fseek(pb, ext_len, SEEK_CUR);
444 }
445
446 for (i=0; i<payload_ext_ct; i++){
447 get_guid(pb, &g);
448 ext_d=get_le16(pb);
449 ext_len=get_le32(pb);
450 url_fseek(pb, ext_len, SEEK_CUR);
451 }
452
453 // there could be a optional stream properties object to follow
454 // if so the next iteration will pick it up
de6d9b64
FB
455 } else if (!memcmp(&g, &head1_guid, sizeof(GUID))) {
456 int v1, v2;
457 get_guid(pb, &g);
458 v1 = get_le32(pb);
459 v2 = get_le16(pb);
88141c91 460#if 0
de6d9b64
FB
461 } else if (!memcmp(&g, &codec_comment_header, sizeof(GUID))) {
462 int len, v1, n, num;
463 char str[256], *q;
464 char tag[16];
465
466 get_guid(pb, &g);
467 print_guid(&g);
2a10020b 468
de6d9b64
FB
469 n = get_le32(pb);
470 for(i=0;i<n;i++) {
471 num = get_le16(pb); /* stream number */
472 get_str16(pb, str, sizeof(str));
473 get_str16(pb, str, sizeof(str));
474 len = get_le16(pb);
475 q = tag;
476 while (len > 0) {
477 v1 = get_byte(pb);
478 if ((q - tag) < sizeof(tag) - 1)
479 *q++ = v1;
480 len--;
481 }
482 *q = '\0';
483 }
484#endif
485 } else if (url_feof(pb)) {
486 goto fail;
487 } else {
488 url_fseek(pb, gsize - 24, SEEK_CUR);
489 }
490 }
491 get_guid(pb, &g);
492 get_le64(pb);
493 get_byte(pb);
494 get_byte(pb);
2141dc37
ZK
495 if (url_feof(pb))
496 goto fail;
497 asf->data_offset = url_ftell(pb);
de6d9b64
FB
498 asf->packet_size_left = 0;
499
30e88789
MN
500
501 for(i=0; i<128; i++){
502 int stream_num= asf->asfid2avid[i];
0b339acb 503 if(stream_num>=0 && dar[i].num>0 && dar[i].den>0){
30e88789 504 AVCodecContext *codec= s->streams[stream_num]->codec;
0b339acb
BC
505 av_reduce(&codec->sample_aspect_ratio.num,
506 &codec->sample_aspect_ratio.den,
507 dar[i].num, dar[i].den, INT_MAX);
30e88789
MN
508//av_log(NULL, AV_LOG_ERROR, "dar %d:%d sar=%d:%d\n", dar[i].num, dar[i].den, codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den);
509 }
510 }
511
de6d9b64
FB
512 return 0;
513
514 fail:
4c3dff6d 515 for(i=0;i<s->nb_streams;i++) {
de6d9b64 516 AVStream *st = s->streams[i];
bb270c08
DB
517 if (st) {
518 av_free(st->priv_data);
01f4895c 519 av_free(st->codec->extradata);
bb270c08 520 }
1ea4f593 521 av_free(st);
de6d9b64 522 }
de6d9b64
FB
523 return -1;
524}
525
2a10020b
ZK
526#define DO_2BITS(bits, var, defval) \
527 switch (bits & 3) \
528 { \
529 case 3: var = get_le32(pb); rsize += 4; break; \
530 case 2: var = get_le16(pb); rsize += 2; break; \
531 case 1: var = get_byte(pb); rsize++; break; \
532 default: var = defval; break; \
533 }
534
f7835507
MN
535/**
536 *
537 * @return <0 in case of an error
538 */
de6d9b64
FB
539static int asf_get_packet(AVFormatContext *s)
540{
541 ASFContext *asf = s->priv_data;
542 ByteIOContext *pb = &s->pb;
2a10020b 543 uint32_t packet_length, padsize;
29962fea 544 int rsize = 9;
0fd9e6f3
MN
545 int c, d, e, off;
546
547 off= (url_ftell(&s->pb) - s->data_offset) % asf->packet_size + 3;
548
549 c=d=e=-1;
550 while(off-- > 0){
551 c=d; d=e;
552 e= get_byte(pb);
553 if(c == 0x82 && !d && !e)
554 break;
555 }
115329f1 556
1359c2d4 557 if (c != 0x82) {
5acdd6e6 558 if (!url_feof(pb))
bb270c08 559 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb));
2a10020b
ZK
560 }
561 if ((c & 0x0f) == 2) { // always true for now
0fd9e6f3 562 if (d || e) {
5acdd6e6 563 if (!url_feof(pb))
bb270c08 564 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
f7835507 565 return -1;
bb270c08 566 }
0fd9e6f3
MN
567 d= get_byte(pb);
568 e= get_byte(pb);
29962fea
MN
569 rsize+=2;
570/* }else{
571 if (!url_feof(pb))
949b1a13 572 printf("ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb));
bb270c08 573 return AVERROR_IO;*/
de6d9b64 574 }
2a10020b 575
0fd9e6f3
MN
576 asf->packet_flags = d;
577 asf->packet_property = e;
2a10020b
ZK
578
579 DO_2BITS(asf->packet_flags >> 5, packet_length, asf->packet_size);
580 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
581 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
582
5b11e081
MN
583 //the following checks prevent overflows and infinite loops
584 if(packet_length >= (1U<<29)){
585 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, url_ftell(pb));
ceba96cb 586 return -1;
5b11e081 587 }
92216453 588 if(padsize >= packet_length){
5b11e081 589 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, url_ftell(pb));
ceba96cb 590 return -1;
5b11e081
MN
591 }
592
2a10020b 593 asf->packet_timestamp = get_le32(pb);
de6d9b64 594 get_le16(pb); /* duration */
2141dc37 595 // rsize has at least 11 bytes which have to be present
2a10020b
ZK
596
597 if (asf->packet_flags & 0x01) {
bb270c08 598 asf->packet_segsizetype = get_byte(pb); rsize++;
2a10020b
ZK
599 asf->packet_segments = asf->packet_segsizetype & 0x3f;
600 } else {
bb270c08 601 asf->packet_segments = 1;
2a10020b
ZK
602 asf->packet_segsizetype = 0x80;
603 }
604 asf->packet_size_left = packet_length - padsize - rsize;
acbe6cfa
ZK
605 if (packet_length < asf->hdr.min_pktsize)
606 padsize += asf->hdr.min_pktsize - packet_length;
2a10020b 607 asf->packet_padsize = padsize;
de6d9b64 608#ifdef DEBUG
2a10020b 609 printf("packet: size=%d padsize=%d left=%d\n", asf->packet_size, asf->packet_padsize, asf->packet_size_left);
de6d9b64 610#endif
de6d9b64
FB
611 return 0;
612}
613
ae60a857
MN
614/**
615 *
616 * @return <0 if error
617 */
618static int asf_read_frame_header(AVFormatContext *s){
619 ASFContext *asf = s->priv_data;
620 ByteIOContext *pb = &s->pb;
621 int rsize = 1;
622 int num = get_byte(pb);
559a55ad 623 int64_t ts0, ts1;
ae60a857
MN
624
625 asf->packet_segments--;
626 asf->packet_key_frame = num >> 7;
627 asf->stream_index = asf->asfid2avid[num & 0x7f];
628 // sequence should be ignored!
629 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
630 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
631 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
632//printf("key:%d stream:%d seq:%d offset:%d replic_size:%d\n", asf->packet_key_frame, asf->stream_index, asf->packet_seq, //asf->packet_frag_offset, asf->packet_replic_size);
633 if (asf->packet_replic_size >= 8) {
634 asf->packet_obj_size = get_le32(pb);
635 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
636 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
637 return -1;
638 }
639 asf->packet_frag_timestamp = get_le32(pb); // timestamp
559a55ad
MN
640 if(asf->packet_replic_size >= 8+38+4){
641// for(i=0; i<asf->packet_replic_size-8; i++)
642// av_log(s, AV_LOG_DEBUG, "%02X ",get_byte(pb));
643// av_log(s, AV_LOG_DEBUG, "\n");
644 url_fskip(pb, 10);
645 ts0= get_le64(pb);
646 ts1= get_le64(pb);
647 url_fskip(pb, 12);
648 get_le32(pb);
649 url_fskip(pb, asf->packet_replic_size - 8 - 38 - 4);
650 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
651 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
652 }else
653 url_fskip(pb, asf->packet_replic_size - 8);
ae60a857
MN
654 rsize += asf->packet_replic_size; // FIXME - check validity
655 } else if (asf->packet_replic_size==1){
656 // multipacket - frag_offset is begining timestamp
657 asf->packet_time_start = asf->packet_frag_offset;
658 asf->packet_frag_offset = 0;
659 asf->packet_frag_timestamp = asf->packet_timestamp;
660
661 asf->packet_time_delta = get_byte(pb);
662 rsize++;
663 }else if(asf->packet_replic_size!=0){
664 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
665 return -1;
666 }
667 if (asf->packet_flags & 0x01) {
668 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
13f7e4b9
MN
669 if(asf->packet_frag_size > asf->packet_size_left - rsize){
670 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid\n");
671 return -1;
672 }
ae60a857
MN
673 //printf("Fragsize %d\n", asf->packet_frag_size);
674 } else {
675 asf->packet_frag_size = asf->packet_size_left - rsize;
676 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
677 }
678 if (asf->packet_replic_size == 1) {
679 asf->packet_multi_size = asf->packet_frag_size;
680 if (asf->packet_multi_size > asf->packet_size_left)
681 return -1;
682 }
683 asf->packet_size_left -= rsize;
684 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
685
686 return 0;
687}
688
de6d9b64
FB
689static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
690{
691 ASFContext *asf = s->priv_data;
2a10020b 692 ASFStream *asf_st = 0;
de6d9b64 693 ByteIOContext *pb = &s->pb;
1359c2d4 694 //static int pc = 0;
2a10020b 695 for (;;) {
ceba96cb
MN
696 if(url_feof(pb))
697 return AVERROR_IO;
bb270c08
DB
698 if (asf->packet_size_left < FRAME_HEADER_SIZE
699 || asf->packet_segments < 1) {
700 //asf->packet_size_left <= asf->packet_padsize) {
701 int ret = asf->packet_size_left + asf->packet_padsize;
949b1a13 702 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb));
5b11e081 703 assert(ret>=0);
bb270c08
DB
704 /* fail safe */
705 url_fskip(pb, ret);
b04d5d31 706
82b9e4a2 707 asf->packet_pos= url_ftell(&s->pb);
b6eaae39
KED
708 if (asf->data_object_size != (uint64_t)-1 &&
709 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
710 return AVERROR_IO; /* Do not exceed the size of the data object */
bb270c08
DB
711 ret = asf_get_packet(s);
712 //printf("READ ASF PACKET %d r:%d c:%d\n", ret, asf->packet_size_left, pc++);
ceba96cb
MN
713 if (ret < 0)
714 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
2141dc37 715 asf->packet_time_start = 0;
2a10020b 716 continue;
bb270c08
DB
717 }
718 if (asf->packet_time_start == 0) {
ae60a857
MN
719 if(asf_read_frame_header(s) < 0){
720 asf->packet_segments= 0;
236116cb 721 continue;
1305a9d5 722 }
bb270c08 723 if (asf->stream_index < 0
f3356e9c
MN
724 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
725 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
726 ) {
1359c2d4 727 asf->packet_time_start = 0;
bb270c08
DB
728 /* unhandled packet (should not happen) */
729 url_fskip(pb, asf->packet_frag_size);
730 asf->packet_size_left -= asf->packet_frag_size;
b9866ebc 731 if(asf->stream_index < 0)
ae60a857 732 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
1359c2d4 733 continue;
bb270c08
DB
734 }
735 asf->asf_st = s->streams[asf->stream_index]->priv_data;
736 }
737 asf_st = asf->asf_st;
738
bb270c08
DB
739 if (asf->packet_replic_size == 1) {
740 // frag_offset is here used as the begining timestamp
741 asf->packet_frag_timestamp = asf->packet_time_start;
742 asf->packet_time_start += asf->packet_time_delta;
743 asf->packet_obj_size = asf->packet_frag_size = get_byte(pb);
744 asf->packet_size_left--;
2141dc37 745 asf->packet_multi_size--;
bb270c08
DB
746 if (asf->packet_multi_size < asf->packet_obj_size)
747 {
748 asf->packet_time_start = 0;
749 url_fskip(pb, asf->packet_multi_size);
750 asf->packet_size_left -= asf->packet_multi_size;
2141dc37 751 continue;
bb270c08
DB
752 }
753 asf->packet_multi_size -= asf->packet_obj_size;
754 //printf("COMPRESS size %d %d %d ms:%d\n", asf->packet_obj_size, asf->packet_frag_timestamp, asf->packet_size_left, asf->packet_multi_size);
755 }
f8f0a0bd
MN
756 if ( asf_st->pkt.size != asf->packet_obj_size
757 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
200026aa
MN
758 if(asf_st->pkt.data){
759 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
760 asf_st->frag_offset = 0;
761 av_free_packet(&asf_st->pkt);
762 }
bb270c08
DB
763 /* new packet */
764 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
765 asf_st->seq = asf->packet_seq;
766 asf_st->pkt.pts = asf->packet_frag_timestamp;
767 asf_st->pkt.stream_index = asf->stream_index;
115329f1
DB
768 asf_st->pkt.pos =
769 asf_st->packet_pos= asf->packet_pos;
770//printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
82b9e4a2 771//asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & PKT_FLAG_KEY,
01f4895c 772//s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO, asf->packet_obj_size);
bb270c08
DB
773 if (s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO)
774 asf->packet_key_frame = 1;
775 if (asf->packet_key_frame)
776 asf_st->pkt.flags |= PKT_FLAG_KEY;
777 }
778
779 /* read data */
780 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
781 // asf->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
782 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
783 asf->packet_size_left -= asf->packet_frag_size;
784 if (asf->packet_size_left < 0)
2141dc37 785 continue;
4c71d727
MN
786
787 if( asf->packet_frag_offset >= asf_st->pkt.size
788 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
789 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
790 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
791 continue;
792 }
793
bb270c08
DB
794 get_buffer(pb, asf_st->pkt.data + asf->packet_frag_offset,
795 asf->packet_frag_size);
796 asf_st->frag_offset += asf->packet_frag_size;
797 /* test if whole packet is read */
798 if (asf_st->frag_offset == asf_st->pkt.size) {
799 /* return packet */
800 if (asf_st->ds_span > 1) {
05219463
MN
801 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
802 av_log(s, AV_LOG_ERROR, "pkt.size != ds_packet_size * ds_span\n");
803 }else{
bb270c08 804 /* packet descrambling */
191e8ca7 805 uint8_t *newdata = av_malloc(asf_st->pkt.size);
bb270c08
DB
806 if (newdata) {
807 int offset = 0;
808 while (offset < asf_st->pkt.size) {
809 int off = offset / asf_st->ds_chunk_size;
810 int row = off / asf_st->ds_span;
811 int col = off % asf_st->ds_span;
812 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
813 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
05219463
MN
814
815 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
816 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
bb270c08
DB
817 memcpy(newdata + offset,
818 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
819 asf_st->ds_chunk_size);
820 offset += asf_st->ds_chunk_size;
821 }
822 av_free(asf_st->pkt.data);
823 asf_st->pkt.data = newdata;
824 }
05219463 825 }
bb270c08
DB
826 }
827 asf_st->frag_offset = 0;
b83e83b9 828 *pkt= asf_st->pkt;
bb270c08
DB
829 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
830 asf_st->pkt.size = 0;
831 asf_st->pkt.data = 0;
832 break; // packet completed
833 }
de6d9b64 834 }
de6d9b64
FB
835 return 0;
836}
837
838static int asf_read_close(AVFormatContext *s)
839{
de6d9b64
FB
840 int i;
841
842 for(i=0;i<s->nb_streams;i++) {
bb270c08
DB
843 AVStream *st = s->streams[i];
844 av_free(st->priv_data);
1ae7518d 845 av_free(st->codec->palctrl);
de6d9b64 846 }
de6d9b64
FB
847 return 0;
848}
849
38376f00
KK
850// Added to support seeking after packets have been read
851// If information is not reset, read_packet fails due to
852// leftover information from previous reads
853static void asf_reset_header(AVFormatContext *s)
854{
855 ASFContext *asf = s->priv_data;
82b9e4a2
MN
856 ASFStream *asf_st;
857 int i;
38376f00
KK
858
859 asf->packet_nb_frames = 0;
38376f00
KK
860 asf->packet_size_left = 0;
861 asf->packet_segments = 0;
862 asf->packet_flags = 0;
863 asf->packet_property = 0;
864 asf->packet_timestamp = 0;
865 asf->packet_segsizetype = 0;
866 asf->packet_segments = 0;
867 asf->packet_seq = 0;
868 asf->packet_replic_size = 0;
869 asf->packet_key_frame = 0;
870 asf->packet_padsize = 0;
871 asf->packet_frag_offset = 0;
872 asf->packet_frag_size = 0;
873 asf->packet_frag_timestamp = 0;
874 asf->packet_multi_size = 0;
875 asf->packet_obj_size = 0;
876 asf->packet_time_delta = 0;
877 asf->packet_time_start = 0;
115329f1 878
82b9e4a2
MN
879 for(i=0; i<s->nb_streams; i++){
880 asf_st= s->streams[i]->priv_data;
881 av_free_packet(&asf_st->pkt);
882 asf_st->frag_offset=0;
883 asf_st->seq=0;
884 }
885 asf->asf_st= NULL;
38376f00
KK
886}
887
8d14a25c 888static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
38376f00
KK
889{
890 ASFContext *asf = s->priv_data;
891 AVPacket pkt1, *pkt = &pkt1;
82b9e4a2 892 ASFStream *asf_st;
580fb5e7 893 int64_t pts;
82b9e4a2 894 int64_t pos= *ppos;
3e9245a9
MN
895 int i;
896 int64_t start_pos[s->nb_streams];
115329f1 897
3e9245a9
MN
898 for(i=0; i<s->nb_streams; i++){
899 start_pos[i]= pos;
900 }
115329f1 901
8d14a25c
MN
902 pos= (pos+asf->packet_size-1-s->data_offset)/asf->packet_size*asf->packet_size+ s->data_offset;
903 *ppos= pos;
904 url_fseek(&s->pb, pos, SEEK_SET);
115329f1 905
82b9e4a2 906//printf("asf_read_pts\n");
82b9e4a2 907 asf_reset_header(s);
3e9245a9 908 for(;;){
82b9e4a2 909 if (av_read_frame(s, pkt) < 0){
0b93103a 910 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
bb270c08 911 return AV_NOPTS_VALUE;
82b9e4a2 912 }
115329f1 913
38cf2a72 914 pts= pkt->pts;
580fb5e7
MN
915
916 av_free_packet(pkt);
3e9245a9
MN
917 if(pkt->flags&PKT_FLAG_KEY){
918 i= pkt->stream_index;
919
920 asf_st= s->streams[i]->priv_data;
921
0fd9e6f3 922// assert((asf_st->packet_pos - s->data_offset) % asf->packet_size == 0);
8d14a25c 923 pos= asf_st->packet_pos;
09646bab 924
52e54612 925 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
8d14a25c 926 start_pos[i]= asf_st->packet_pos + 1;
115329f1 927
3e9245a9
MN
928 if(pkt->stream_index == stream_index)
929 break;
930 }
931 }
932
933 *ppos= pos;
949b1a13 934//printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
580fb5e7
MN
935
936 return pts;
38376f00
KK
937}
938
56c96a22
MN
939static void asf_build_simple_index(AVFormatContext *s, int stream_index)
940{
941 GUID g;
942 ASFContext *asf = s->priv_data;
943 int64_t gsize, itime;
944 int64_t pos, current_pos, index_pts;
945 int i;
946 int pct,ict;
947
948 current_pos = url_ftell(&s->pb);
949
950 url_fseek(&s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
951 get_guid(&s->pb, &g);
952 if (!memcmp(&g, &index_guid, sizeof(GUID))) {
953 gsize = get_le64(&s->pb);
954 get_guid(&s->pb, &g);
955 itime=get_le64(&s->pb);
956 pct=get_le32(&s->pb);
957 ict=get_le32(&s->pb);
ccd3228e 958 av_log(NULL, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
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959
960 for (i=0;i<ict;i++){
961 int pktnum=get_le32(&s->pb);
962 int pktct =get_le16(&s->pb);
963 av_log(NULL, AV_LOG_DEBUG, "pktnum:%d, pktct:%d\n", pktnum, pktct);
964
965 pos=s->data_offset + asf->packet_size*(int64_t)pktnum;
966 index_pts=av_rescale(itime, i, 10000);
967
968 av_add_index_entry(s->streams[stream_index], pos, index_pts, asf->packet_size, 0, AVINDEX_KEYFRAME);
969 }
52e54612 970 asf->index_read= 1;
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971 }
972 url_fseek(&s->pb, current_pos, SEEK_SET);
973}
974
3ba1438d 975static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
2a10020b 976{
afda223c 977 ASFContext *asf = s->priv_data;
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978 AVStream *st = s->streams[stream_index];
979 int64_t pos;
980 int index;
115329f1 981
a602556e 982 if (asf->packet_size <= 0)
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983 return -1;
984
52e54612 985 if (!asf->index_read)
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986 asf_build_simple_index(s, stream_index);
987
52e54612 988 if(!(asf->index_read && st->index_entries)){
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989 if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
990 return -1;
991 }else{
992 index= av_index_search_timestamp(st, pts, flags);
993 if(index<0)
994 return -1;
995
996 /* find the position */
997 pos = st->index_entries[index].pos;
998 pts = st->index_entries[index].timestamp;
999
1000 // various attempts to find key frame have failed so far
1001 // asf_reset_header(s);
1002 // url_fseek(&s->pb, pos, SEEK_SET);
1003 // key_pos = pos;
1004 // for(i=0;i<16;i++){
1005 // pos = url_ftell(&s->pb);
1006 // if (av_read_frame(s, &pkt) < 0){
1007 // av_log(s, AV_LOG_INFO, "seek failed\n");
1008 // return -1;
1009 // }
1010 // asf_st = s->streams[stream_index]->priv_data;
1011 // pos += st->parser->frame_offset;
1012 //
1013 // if (pkt.size > b) {
1014 // b = pkt.size;
1015 // key_pos = pos;
1016 // }
1017 //
1018 // av_free_packet(&pkt);
1019 // }
1020
1021 /* do the seek */
ccd3228e 1022 av_log(NULL, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
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1023 url_fseek(&s->pb, pos, SEEK_SET);
1024 }
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1025 asf_reset_header(s);
1026 return 0;
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1027}
1028
ff70e601 1029AVInputFormat asf_demuxer = {
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1030 "asf",
1031 "asf format",
1032 sizeof(ASFContext),
1033 asf_probe,
1034 asf_read_header,
1035 asf_read_packet,
1036 asf_read_close,
2a10020b 1037 asf_read_seek,
8d14a25c 1038 asf_read_pts,
c9a65ca8 1039};