2 * ASF compatible demuxer
3 * Copyright (c) 2000, 2001 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #include "libavutil/bswap.h"
25 #include "libavutil/common.h"
26 #include "libavutil/avstring.h"
27 #include "libavutil/dict.h"
28 #include "libavutil/mathematics.h"
29 #include "libavutil/opt.h"
32 #include "avio_internal.h"
36 #include "avlanguage.h"
40 int asfid2avid[128]; ///< conversion table from asf ID 2 AVStream ID
41 ASFStream streams[128]; ///< it's max number and it's not that big
42 uint32_t stream_bitrates[128]; ///< max number of streams, bitrate for each (for streaming)
44 char stream_languages[128][6]; ///< max number of streams, language for each (RFC1766, e.g. en-US)
45 /* non streamed additonnal info */
48 /* only for reading */
49 uint64_t data_offset; ///< beginning of the first data packet
50 uint64_t data_object_offset; ///< data object offset (excl. GUID & size)
51 uint64_t data_object_size; ///< size of the data object
59 int packet_segsizetype;
62 int packet_replic_size;
65 unsigned int packet_frag_offset;
66 unsigned int packet_frag_size;
67 int64_t packet_frag_timestamp;
68 int packet_multi_size;
70 int packet_time_delta;
71 int packet_time_start;
76 ASFStream* asf_st; ///< currently decoded stream
81 static const AVOption options[] = {
82 {"no_resync_search", "Don't try to resynchronize by looking for a certain optional start code", offsetof(ASFContext, no_resync_search), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
86 static const AVClass asf_class = {
87 .class_name = "asf demuxer",
88 .item_name = av_default_item_name,
90 .version = LIBAVUTIL_VERSION_INT,
96 #define ASF_MAX_STREAMS 127
97 #define FRAME_HEADER_SIZE 17
98 // Fix Me! FRAME_HEADER_SIZE may be different.
101 static const ff_asf_guid stream_bitrate_guid = { /* (http://get.to/sdp) */
102 0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2
105 #define PRINT_IF_GUID(g,cmp) \
106 if (!ff_guidcmp(g, &cmp)) \
107 av_dlog(NULL, "(GUID: %s) ", #cmp)
109 static void print_guid(const ff_asf_guid *g)
112 PRINT_IF_GUID(g, ff_asf_header);
113 else PRINT_IF_GUID(g, ff_asf_file_header);
114 else PRINT_IF_GUID(g, ff_asf_stream_header);
115 else PRINT_IF_GUID(g, ff_asf_audio_stream);
116 else PRINT_IF_GUID(g, ff_asf_audio_conceal_none);
117 else PRINT_IF_GUID(g, ff_asf_video_stream);
118 else PRINT_IF_GUID(g, ff_asf_video_conceal_none);
119 else PRINT_IF_GUID(g, ff_asf_command_stream);
120 else PRINT_IF_GUID(g, ff_asf_comment_header);
121 else PRINT_IF_GUID(g, ff_asf_codec_comment_header);
122 else PRINT_IF_GUID(g, ff_asf_codec_comment1_header);
123 else PRINT_IF_GUID(g, ff_asf_data_header);
124 else PRINT_IF_GUID(g, ff_asf_simple_index_header);
125 else PRINT_IF_GUID(g, ff_asf_head1_guid);
126 else PRINT_IF_GUID(g, ff_asf_head2_guid);
127 else PRINT_IF_GUID(g, ff_asf_my_guid);
128 else PRINT_IF_GUID(g, ff_asf_ext_stream_header);
129 else PRINT_IF_GUID(g, ff_asf_extended_content_header);
130 else PRINT_IF_GUID(g, ff_asf_ext_stream_embed_stream_header);
131 else PRINT_IF_GUID(g, ff_asf_ext_stream_audio_stream);
132 else PRINT_IF_GUID(g, ff_asf_metadata_header);
133 else PRINT_IF_GUID(g, ff_asf_marker_header);
134 else PRINT_IF_GUID(g, stream_bitrate_guid);
135 else PRINT_IF_GUID(g, ff_asf_language_guid);
137 av_dlog(NULL, "(GUID: unknown) ");
139 av_dlog(NULL, " 0x%02x,", (*g)[i]);
140 av_dlog(NULL, "}\n");
144 #define print_guid(g)
147 static int asf_probe(AVProbeData *pd)
149 /* check file header */
150 if (!ff_guidcmp(pd->buf, &ff_asf_header))
151 return AVPROBE_SCORE_MAX;
156 static int get_value(AVIOContext *pb, int type){
158 case 2: return avio_rl32(pb);
159 case 3: return avio_rl32(pb);
160 case 4: return avio_rl64(pb);
161 case 5: return avio_rl16(pb);
162 default:return INT_MIN;
166 static void get_tag(AVFormatContext *s, const char *key, int type, int len)
169 int64_t off = avio_tell(s->pb);
171 if ((unsigned)len >= (UINT_MAX - 1)/2)
174 value = av_malloc(2*len+1);
178 if (type == 0) { // UTF16-LE
179 avio_get_str16le(s->pb, len, value, 2*len + 1);
180 } else if (type == -1) { // ASCII
181 avio_read(s->pb, value, len);
183 } else if (type > 1 && type <= 5) { // boolean or DWORD or QWORD or WORD
184 uint64_t num = get_value(s->pb, type);
185 snprintf(value, len, "%"PRIu64, num);
187 av_log(s, AV_LOG_DEBUG, "Unsupported value type %d in tag %s.\n", type, key);
191 av_dict_set(&s->metadata, key, value, 0);
194 avio_seek(s->pb, off + len, SEEK_SET);
197 static int asf_read_file_properties(AVFormatContext *s, int64_t size)
199 ASFContext *asf = s->priv_data;
200 AVIOContext *pb = s->pb;
202 ff_get_guid(pb, &asf->hdr.guid);
203 asf->hdr.file_size = avio_rl64(pb);
204 asf->hdr.create_time = avio_rl64(pb);
205 avio_rl64(pb); /* number of packets */
206 asf->hdr.play_time = avio_rl64(pb);
207 asf->hdr.send_time = avio_rl64(pb);
208 asf->hdr.preroll = avio_rl32(pb);
209 asf->hdr.ignore = avio_rl32(pb);
210 asf->hdr.flags = avio_rl32(pb);
211 asf->hdr.min_pktsize = avio_rl32(pb);
212 asf->hdr.max_pktsize = avio_rl32(pb);
213 if (asf->hdr.min_pktsize >= (1U<<29))
214 return AVERROR_INVALIDDATA;
215 asf->hdr.max_bitrate = avio_rl32(pb);
216 s->packet_size = asf->hdr.max_pktsize;
221 static int asf_read_stream_properties(AVFormatContext *s, int64_t size)
223 ASFContext *asf = s->priv_data;
224 AVIOContext *pb = s->pb;
228 enum AVMediaType type;
229 int type_specific_size, sizeX;
231 int64_t pos1, pos2, start_time;
232 int test_for_ext_stream_audio, is_dvr_ms_audio=0;
234 if (s->nb_streams == ASF_MAX_STREAMS) {
235 av_log(s, AV_LOG_ERROR, "too many streams\n");
236 return AVERROR(EINVAL);
239 pos1 = avio_tell(pb);
241 st = avformat_new_stream(s, NULL);
243 return AVERROR(ENOMEM);
244 avpriv_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
245 asf_st = av_mallocz(sizeof(ASFStream));
247 return AVERROR(ENOMEM);
248 st->priv_data = asf_st;
249 start_time = asf->hdr.preroll;
251 asf_st->stream_language_index = 128; // invalid stream index means no language info
253 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
254 st->duration = asf->hdr.play_time /
255 (10000000 / 1000) - start_time;
259 test_for_ext_stream_audio = 0;
260 if (!ff_guidcmp(&g, &ff_asf_audio_stream)) {
261 type = AVMEDIA_TYPE_AUDIO;
262 } else if (!ff_guidcmp(&g, &ff_asf_video_stream)) {
263 type = AVMEDIA_TYPE_VIDEO;
264 } else if (!ff_guidcmp(&g, &ff_asf_jfif_media)) {
265 type = AVMEDIA_TYPE_VIDEO;
266 st->codec->codec_id = CODEC_ID_MJPEG;
267 } else if (!ff_guidcmp(&g, &ff_asf_command_stream)) {
268 type = AVMEDIA_TYPE_DATA;
269 } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_embed_stream_header)) {
270 test_for_ext_stream_audio = 1;
271 type = AVMEDIA_TYPE_UNKNOWN;
276 avio_skip(pb, 8); /* total_size */
277 type_specific_size = avio_rl32(pb);
279 st->id = avio_rl16(pb) & 0x7f; /* stream id */
280 // mapping of asf ID to AV stream ID;
281 asf->asfid2avid[st->id] = s->nb_streams - 1;
285 if (test_for_ext_stream_audio) {
287 if (!ff_guidcmp(&g, &ff_asf_ext_stream_audio_stream)) {
288 type = AVMEDIA_TYPE_AUDIO;
299 st->codec->codec_type = type;
300 if (type == AVMEDIA_TYPE_AUDIO) {
301 int ret = ff_get_wav_header(pb, st->codec, type_specific_size);
304 if (is_dvr_ms_audio) {
305 // codec_id and codec_tag are unreliable in dvr_ms
306 // files. Set them later by probing stream.
307 st->request_probe= 1;
308 st->codec->codec_tag = 0;
310 if (st->codec->codec_id == CODEC_ID_AAC) {
311 st->need_parsing = AVSTREAM_PARSE_NONE;
313 st->need_parsing = AVSTREAM_PARSE_FULL;
315 /* We have to init the frame size at some point .... */
316 pos2 = avio_tell(pb);
317 if (size >= (pos2 + 8 - pos1 + 24)) {
318 asf_st->ds_span = avio_r8(pb);
319 asf_st->ds_packet_size = avio_rl16(pb);
320 asf_st->ds_chunk_size = avio_rl16(pb);
321 avio_rl16(pb); //ds_data_size
322 avio_r8(pb); //ds_silence_data
324 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
325 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
326 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
327 if (asf_st->ds_span > 1) {
328 if (!asf_st->ds_chunk_size
329 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
330 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
331 asf_st->ds_span = 0; // disable descrambling
333 } else if (type == AVMEDIA_TYPE_VIDEO &&
334 size - (avio_tell(pb) - pos1 + 24) >= 51) {
338 avio_rl16(pb); /* size */
339 sizeX= avio_rl32(pb); /* size */
340 st->codec->width = avio_rl32(pb);
341 st->codec->height = avio_rl32(pb);
342 /* not available for asf */
343 avio_rl16(pb); /* panes */
344 st->codec->bits_per_coded_sample = avio_rl16(pb); /* depth */
345 tag1 = avio_rl32(pb);
347 // av_log(s, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
349 st->codec->extradata_size = sizeX - 40;
350 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
351 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
354 /* Extract palette from extradata if bpp <= 8 */
355 /* This code assumes that extradata contains only palette */
356 /* This is true for all paletted codecs implemented in libavcodec */
357 if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
360 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
361 asf_st->palette[i] = av_bswap32(((uint32_t*)st->codec->extradata)[i]);
363 memcpy(asf_st->palette, st->codec->extradata,
364 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
366 asf_st->palette_changed = 1;
369 st->codec->codec_tag = tag1;
370 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag1);
371 if(tag1 == MKTAG('D', 'V', 'R', ' ')){
372 st->need_parsing = AVSTREAM_PARSE_FULL;
373 // issue658 containse wrong w/h and MS even puts a fake seq header with wrong w/h in extradata while a correct one is in te stream. maximum lameness
375 st->codec->height = 0;
376 av_freep(&st->codec->extradata);
377 st->codec->extradata_size=0;
379 if(st->codec->codec_id == CODEC_ID_H264)
380 st->need_parsing = AVSTREAM_PARSE_FULL_ONCE;
382 pos2 = avio_tell(pb);
383 avio_skip(pb, size - (pos2 - pos1 + 24));
388 static int asf_read_ext_stream_properties(AVFormatContext *s, int64_t size)
390 ASFContext *asf = s->priv_data;
391 AVIOContext *pb = s->pb;
393 int ext_len, payload_ext_ct, stream_ct, i;
394 uint32_t leak_rate, stream_num;
395 unsigned int stream_languageid_index;
397 avio_rl64(pb); // starttime
398 avio_rl64(pb); // endtime
399 leak_rate = avio_rl32(pb); // leak-datarate
400 avio_rl32(pb); // bucket-datasize
401 avio_rl32(pb); // init-bucket-fullness
402 avio_rl32(pb); // alt-leak-datarate
403 avio_rl32(pb); // alt-bucket-datasize
404 avio_rl32(pb); // alt-init-bucket-fullness
405 avio_rl32(pb); // max-object-size
406 avio_rl32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
407 stream_num = avio_rl16(pb); // stream-num
409 stream_languageid_index = avio_rl16(pb); // stream-language-id-index
410 if (stream_num < 128)
411 asf->streams[stream_num].stream_language_index = stream_languageid_index;
413 avio_rl64(pb); // avg frametime in 100ns units
414 stream_ct = avio_rl16(pb); //stream-name-count
415 payload_ext_ct = avio_rl16(pb); //payload-extension-system-count
417 if (stream_num < 128)
418 asf->stream_bitrates[stream_num] = leak_rate;
420 for (i=0; i<stream_ct; i++){
422 ext_len = avio_rl16(pb);
423 avio_skip(pb, ext_len);
426 for (i=0; i<payload_ext_ct; i++){
429 ext_len=avio_rl32(pb);
430 avio_skip(pb, ext_len);
436 static int asf_read_content_desc(AVFormatContext *s, int64_t size)
438 AVIOContext *pb = s->pb;
439 int len1, len2, len3, len4, len5;
441 len1 = avio_rl16(pb);
442 len2 = avio_rl16(pb);
443 len3 = avio_rl16(pb);
444 len4 = avio_rl16(pb);
445 len5 = avio_rl16(pb);
446 get_tag(s, "title" , 0, len1);
447 get_tag(s, "author" , 0, len2);
448 get_tag(s, "copyright", 0, len3);
449 get_tag(s, "comment" , 0, len4);
455 static int asf_read_ext_content_desc(AVFormatContext *s, int64_t size)
457 AVIOContext *pb = s->pb;
458 ASFContext *asf = s->priv_data;
459 int desc_count, i, ret;
461 desc_count = avio_rl16(pb);
462 for(i=0;i<desc_count;i++) {
463 int name_len,value_type,value_len;
466 name_len = avio_rl16(pb);
467 if (name_len%2) // must be even, broken lavf versions wrote len-1
469 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
470 avio_skip(pb, name_len - ret);
471 value_type = avio_rl16(pb);
472 value_len = avio_rl16(pb);
473 if (!value_type && value_len%2)
476 * My sample has that stream set to 0 maybe that mean the container.
477 * Asf stream count start at 1. I am using 0 to the container value since it's unused
479 if (!strcmp(name, "AspectRatioX")){
480 asf->dar[0].num= get_value(s->pb, value_type);
481 } else if(!strcmp(name, "AspectRatioY")){
482 asf->dar[0].den= get_value(s->pb, value_type);
484 get_tag(s, name, value_type, value_len);
490 static int asf_read_language_list(AVFormatContext *s, int64_t size)
492 AVIOContext *pb = s->pb;
493 ASFContext *asf = s->priv_data;
495 int stream_count = avio_rl16(pb);
496 for(j = 0; j < stream_count; j++) {
498 unsigned int lang_len = avio_r8(pb);
499 if ((ret = avio_get_str16le(pb, lang_len, lang, sizeof(lang))) < lang_len)
500 avio_skip(pb, lang_len - ret);
502 av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
508 static int asf_read_metadata(AVFormatContext *s, int64_t size)
510 AVIOContext *pb = s->pb;
511 ASFContext *asf = s->priv_data;
512 int n, stream_num, name_len, value_len, value_num;
519 avio_rl16(pb); //lang_list_index
520 stream_num= avio_rl16(pb);
521 name_len= avio_rl16(pb);
522 avio_skip(pb, 2); /* value_type */
523 value_len= avio_rl32(pb);
525 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
526 avio_skip(pb, name_len - ret);
527 //av_log(s, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
528 value_num= avio_rl16(pb);//we should use get_value() here but it does not work 2 is le16 here but le32 elsewhere
529 avio_skip(pb, value_len - 2);
532 if (!strcmp(name, "AspectRatioX")) asf->dar[stream_num].num= value_num;
533 else if(!strcmp(name, "AspectRatioY")) asf->dar[stream_num].den= value_num;
540 static int asf_read_marker(AVFormatContext *s, int64_t size)
542 AVIOContext *pb = s->pb;
543 int i, count, name_len, ret;
546 avio_rl64(pb); // reserved 16 bytes
547 avio_rl64(pb); // ...
548 count = avio_rl32(pb); // markers count
549 avio_rl16(pb); // reserved 2 bytes
550 name_len = avio_rl16(pb); // name length
551 for(i=0;i<name_len;i++){
552 avio_r8(pb); // skip the name
555 for(i=0;i<count;i++){
559 avio_rl64(pb); // offset, 8 bytes
560 pres_time = avio_rl64(pb); // presentation time
561 avio_rl16(pb); // entry length
562 avio_rl32(pb); // send time
563 avio_rl32(pb); // flags
564 name_len = avio_rl32(pb); // name length
565 if ((ret = avio_get_str16le(pb, name_len * 2, name, sizeof(name))) < name_len)
566 avio_skip(pb, name_len - ret);
567 avpriv_new_chapter(s, i, (AVRational){1, 10000000}, pres_time, AV_NOPTS_VALUE, name );
573 static int asf_read_header(AVFormatContext *s)
575 ASFContext *asf = s->priv_data;
577 AVIOContext *pb = s->pb;
582 if (ff_guidcmp(&g, &ff_asf_header))
583 return AVERROR_INVALIDDATA;
588 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
590 uint64_t gpos= avio_tell(pb);
592 gsize = avio_rl64(pb);
593 av_dlog(s, "%08"PRIx64": ", gpos);
595 av_dlog(s, " size=0x%"PRIx64"\n", gsize);
596 if (!ff_guidcmp(&g, &ff_asf_data_header)) {
597 asf->data_object_offset = avio_tell(pb);
598 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
599 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
600 asf->data_object_size = gsize - 24;
602 asf->data_object_size = (uint64_t)-1;
607 return AVERROR_INVALIDDATA;
608 if (!ff_guidcmp(&g, &ff_asf_file_header)) {
609 int ret = asf_read_file_properties(s, gsize);
612 } else if (!ff_guidcmp(&g, &ff_asf_stream_header)) {
613 asf_read_stream_properties(s, gsize);
614 } else if (!ff_guidcmp(&g, &ff_asf_comment_header)) {
615 asf_read_content_desc(s, gsize);
616 } else if (!ff_guidcmp(&g, &ff_asf_language_guid)) {
617 asf_read_language_list(s, gsize);
618 } else if (!ff_guidcmp(&g, &ff_asf_extended_content_header)) {
619 asf_read_ext_content_desc(s, gsize);
620 } else if (!ff_guidcmp(&g, &ff_asf_metadata_header)) {
621 asf_read_metadata(s, gsize);
622 } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_header)) {
623 asf_read_ext_stream_properties(s, gsize);
625 // there could be a optional stream properties object to follow
626 // if so the next iteration will pick it up
628 } else if (!ff_guidcmp(&g, &ff_asf_head1_guid)) {
632 } else if (!ff_guidcmp(&g, &ff_asf_marker_header)) {
633 asf_read_marker(s, gsize);
634 } else if (url_feof(pb)) {
638 if (!ff_guidcmp(&g, &ff_asf_content_encryption)) {
641 av_log(s, AV_LOG_WARNING, "DRM protected stream detected, decoding will likely fail!\n");
643 av_log(s, AV_LOG_DEBUG, "Secret data:\n");
644 av_get_packet(pb, &pkt, len); av_hex_dump_log(s, AV_LOG_DEBUG, pkt.data, pkt.size); av_free_packet(&pkt);
646 get_tag(s, "ASF_Protection_Type", -1, len);
648 get_tag(s, "ASF_Key_ID", -1, len);
650 get_tag(s, "ASF_License_URL", -1, len);
651 } else if (!ff_guidcmp(&g, &ff_asf_ext_content_encryption)) {
652 av_log(s, AV_LOG_WARNING, "Ext DRM protected stream detected, decoding will likely fail!\n");
653 av_dict_set(&s->metadata, "encryption", "ASF Extended Content Encryption", 0);
654 } else if (!ff_guidcmp(&g, &ff_asf_digital_signature)) {
655 av_log(s, AV_LOG_INFO, "Digital signature detected!\n");
659 if(avio_tell(pb) != gpos + gsize)
660 av_log(s, AV_LOG_DEBUG, "gpos mismatch our pos=%"PRIu64", end=%"PRIu64"\n", avio_tell(pb)-gpos, gsize);
661 avio_seek(pb, gpos + gsize, SEEK_SET);
669 asf->data_offset = avio_tell(pb);
670 asf->packet_size_left = 0;
673 for(i=0; i<128; i++){
674 int stream_num= asf->asfid2avid[i];
676 AVStream *st = s->streams[stream_num];
677 if (!st->codec->bit_rate)
678 st->codec->bit_rate = asf->stream_bitrates[i];
679 if (asf->dar[i].num > 0 && asf->dar[i].den > 0){
680 av_reduce(&st->sample_aspect_ratio.num,
681 &st->sample_aspect_ratio.den,
682 asf->dar[i].num, asf->dar[i].den, INT_MAX);
683 } else if ((asf->dar[0].num > 0) && (asf->dar[0].den > 0) && (st->codec->codec_type==AVMEDIA_TYPE_VIDEO)) // Use ASF container value if the stream doesn't AR set.
684 av_reduce(&st->sample_aspect_ratio.num,
685 &st->sample_aspect_ratio.den,
686 asf->dar[0].num, asf->dar[0].den, INT_MAX);
688 //av_log(s, AV_LOG_INFO, "i=%d, st->codec->codec_type:%d, dar %d:%d sar=%d:%d\n", i, st->codec->codec_type, dar[i].num, dar[i].den, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
690 // copy and convert language codes to the frontend
691 if (asf->streams[i].stream_language_index < 128) {
692 const char *rfc1766 = asf->stream_languages[asf->streams[i].stream_language_index];
693 if (rfc1766 && strlen(rfc1766) > 1) {
694 const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
695 const char *iso6392 = av_convert_lang_to(primary_tag, AV_LANG_ISO639_2_BIBL);
697 av_dict_set(&st->metadata, "language", iso6392, 0);
703 ff_metadata_conv(&s->metadata, NULL, ff_asf_metadata_conv);
708 #define DO_2BITS(bits, var, defval) \
711 case 3: var = avio_rl32(pb); rsize += 4; break; \
712 case 2: var = avio_rl16(pb); rsize += 2; break; \
713 case 1: var = avio_r8(pb); rsize++; break; \
714 default: var = defval; break; \
718 * Load a single ASF packet into the demuxer.
719 * @param s demux context
720 * @param pb context to read data from
721 * @return 0 on success, <0 on error
723 static int ff_asf_get_packet(AVFormatContext *s, AVIOContext *pb)
725 ASFContext *asf = s->priv_data;
726 uint32_t packet_length, padsize;
730 // if we do not know packet size, allow skipping up to 32 kB
732 if (asf->no_resync_search)
734 else if (s->packet_size > 0)
735 off= (avio_tell(pb) - s->data_offset) % s->packet_size + 3;
741 if(c == 0x82 && !d && !e)
747 * This code allows handling of -EAGAIN at packet boundaries (i.e.
748 * if the packet sync code above triggers -EAGAIN). This does not
749 * imply complete -EAGAIN handling support at random positions in
752 if (pb->error == AVERROR(EAGAIN))
753 return AVERROR(EAGAIN);
755 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, avio_tell(pb));
757 if ((c & 0x8f) == 0x82) {
760 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
761 return AVERROR_INVALIDDATA;
766 }else if(!url_feof(pb)){
767 avio_seek(pb, -1, SEEK_CUR); //FIXME
770 asf->packet_flags = c;
771 asf->packet_property = d;
773 DO_2BITS(asf->packet_flags >> 5, packet_length, s->packet_size);
774 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
775 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
777 //the following checks prevent overflows and infinite loops
778 if(!packet_length || packet_length >= (1U<<29)){
779 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, avio_tell(pb));
780 return AVERROR_INVALIDDATA;
782 if(padsize >= packet_length){
783 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, avio_tell(pb));
784 return AVERROR_INVALIDDATA;
787 asf->packet_timestamp = avio_rl32(pb);
788 avio_rl16(pb); /* duration */
789 // rsize has at least 11 bytes which have to be present
791 if (asf->packet_flags & 0x01) {
792 asf->packet_segsizetype = avio_r8(pb); rsize++;
793 asf->packet_segments = asf->packet_segsizetype & 0x3f;
795 asf->packet_segments = 1;
796 asf->packet_segsizetype = 0x80;
798 if (rsize > packet_length - padsize) {
799 asf->packet_size_left = 0;
800 av_log(s, AV_LOG_ERROR,
801 "invalid packet header length %d for pktlen %d-%d at %"PRId64"\n",
802 rsize, packet_length, padsize, avio_tell(pb));
803 return AVERROR_INVALIDDATA;
805 asf->packet_size_left = packet_length - padsize - rsize;
806 if (packet_length < asf->hdr.min_pktsize)
807 padsize += asf->hdr.min_pktsize - packet_length;
808 asf->packet_padsize = padsize;
809 av_dlog(s, "packet: size=%d padsize=%d left=%d\n", s->packet_size, asf->packet_padsize, asf->packet_size_left);
815 * @return <0 if error
817 static int asf_read_frame_header(AVFormatContext *s, AVIOContext *pb){
818 ASFContext *asf = s->priv_data;
820 int num = avio_r8(pb);
821 int64_t ts0, ts1 av_unused;
823 asf->packet_segments--;
824 asf->packet_key_frame = num >> 7;
825 asf->stream_index = asf->asfid2avid[num & 0x7f];
826 // sequence should be ignored!
827 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
828 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
829 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
830 //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);
831 if (rsize+asf->packet_replic_size > asf->packet_size_left) {
832 av_log(s, AV_LOG_ERROR, "packet_replic_size %d is invalid\n", asf->packet_replic_size);
833 return AVERROR_INVALIDDATA;
835 if (asf->packet_replic_size >= 8) {
836 asf->packet_obj_size = avio_rl32(pb);
837 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
838 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
839 return AVERROR_INVALIDDATA;
841 asf->packet_frag_timestamp = avio_rl32(pb); // timestamp
842 if(asf->packet_replic_size >= 8+38+4){
843 // for(i=0; i<asf->packet_replic_size-8; i++)
844 // av_log(s, AV_LOG_DEBUG, "%02X ",avio_r8(pb));
845 // av_log(s, AV_LOG_DEBUG, "\n");
851 avio_skip(pb, asf->packet_replic_size - 8 - 38 - 4);
852 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
853 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
855 avio_skip(pb, asf->packet_replic_size - 8);
856 rsize += asf->packet_replic_size; // FIXME - check validity
857 } else if (asf->packet_replic_size==1){
858 // multipacket - frag_offset is beginning timestamp
859 asf->packet_time_start = asf->packet_frag_offset;
860 asf->packet_frag_offset = 0;
861 asf->packet_frag_timestamp = asf->packet_timestamp;
863 asf->packet_time_delta = avio_r8(pb);
865 }else if(asf->packet_replic_size!=0){
866 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
867 return AVERROR_INVALIDDATA;
869 if (asf->packet_flags & 0x01) {
870 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
871 if (rsize > asf->packet_size_left) {
872 av_log(s, AV_LOG_ERROR, "packet_replic_size is invalid\n");
873 return AVERROR_INVALIDDATA;
874 } else if(asf->packet_frag_size > asf->packet_size_left - rsize){
875 if (asf->packet_frag_size > asf->packet_size_left - rsize + asf->packet_padsize) {
876 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid (%d-%d)\n", asf->packet_size_left, rsize);
877 return AVERROR_INVALIDDATA;
879 int diff = asf->packet_frag_size - (asf->packet_size_left - rsize);
880 asf->packet_size_left += diff;
881 asf->packet_padsize -= diff;
884 //printf("Fragsize %d\n", asf->packet_frag_size);
886 asf->packet_frag_size = asf->packet_size_left - rsize;
887 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
889 if (asf->packet_replic_size == 1) {
890 asf->packet_multi_size = asf->packet_frag_size;
891 if (asf->packet_multi_size > asf->packet_size_left)
892 return AVERROR_INVALIDDATA;
894 asf->packet_size_left -= rsize;
895 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
901 * Parse data from individual ASF packets (which were previously loaded
902 * with asf_get_packet()).
903 * @param s demux context
904 * @param pb context to read data from
905 * @param pkt pointer to store packet data into
906 * @return 0 if data was stored in pkt, <0 on error or 1 if more ASF
907 * packets need to be loaded (through asf_get_packet())
909 static int ff_asf_parse_packet(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
911 ASFContext *asf = s->priv_data;
912 ASFStream *asf_st = 0;
917 if (asf->packet_size_left < FRAME_HEADER_SIZE
918 || asf->packet_segments < 1) {
919 //asf->packet_size_left <= asf->packet_padsize) {
920 int ret = asf->packet_size_left + asf->packet_padsize;
921 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, avio_tell(pb));
926 asf->packet_pos= avio_tell(pb);
927 if (asf->data_object_size != (uint64_t)-1 &&
928 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
929 return AVERROR_EOF; /* Do not exceed the size of the data object */
932 if (asf->packet_time_start == 0) {
933 if(asf_read_frame_header(s, pb) < 0){
934 asf->packet_segments= 0;
937 if (asf->stream_index < 0
938 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
939 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
941 asf->packet_time_start = 0;
942 /* unhandled packet (should not happen) */
943 avio_skip(pb, asf->packet_frag_size);
944 asf->packet_size_left -= asf->packet_frag_size;
945 if(asf->stream_index < 0)
946 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
949 asf->asf_st = s->streams[asf->stream_index]->priv_data;
951 asf_st = asf->asf_st;
953 if (asf->packet_replic_size == 1) {
954 // frag_offset is here used as the beginning timestamp
955 asf->packet_frag_timestamp = asf->packet_time_start;
956 asf->packet_time_start += asf->packet_time_delta;
957 asf->packet_obj_size = asf->packet_frag_size = avio_r8(pb);
958 asf->packet_size_left--;
959 asf->packet_multi_size--;
960 if (asf->packet_multi_size < asf->packet_obj_size)
962 asf->packet_time_start = 0;
963 avio_skip(pb, asf->packet_multi_size);
964 asf->packet_size_left -= asf->packet_multi_size;
967 asf->packet_multi_size -= asf->packet_obj_size;
968 //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);
970 if( /*asf->packet_frag_size == asf->packet_obj_size*/
971 asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
972 && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
973 av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
974 asf_st->frag_offset, asf->packet_frag_size,
975 asf->packet_obj_size, asf_st->pkt.size);
976 asf->packet_obj_size= asf_st->pkt.size;
979 if ( asf_st->pkt.size != asf->packet_obj_size
980 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
981 if(asf_st->pkt.data){
982 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
983 asf_st->frag_offset = 0;
984 av_free_packet(&asf_st->pkt);
987 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
988 asf_st->seq = asf->packet_seq;
989 asf_st->pkt.dts = asf->packet_frag_timestamp - asf->hdr.preroll;
990 asf_st->pkt.stream_index = asf->stream_index;
992 asf_st->packet_pos= asf->packet_pos;
993 if (asf_st->pkt.data && asf_st->palette_changed) {
995 pal = av_packet_new_side_data(&asf_st->pkt, AV_PKT_DATA_PALETTE,
998 av_log(s, AV_LOG_ERROR, "Cannot append palette to packet\n");
1000 memcpy(pal, asf_st->palette, AVPALETTE_SIZE);
1001 asf_st->palette_changed = 0;
1004 //printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
1005 //asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & AV_PKT_FLAG_KEY,
1006 //s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO, asf->packet_obj_size);
1007 if (s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1008 asf->packet_key_frame = 1;
1009 if (asf->packet_key_frame)
1010 asf_st->pkt.flags |= AV_PKT_FLAG_KEY;
1014 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
1015 // s->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
1016 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
1017 asf->packet_size_left -= asf->packet_frag_size;
1018 if (asf->packet_size_left < 0)
1021 if( asf->packet_frag_offset >= asf_st->pkt.size
1022 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
1023 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
1024 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
1028 ret = avio_read(pb, asf_st->pkt.data + asf->packet_frag_offset,
1029 asf->packet_frag_size);
1030 if (ret != asf->packet_frag_size) {
1031 if (ret < 0 || asf->packet_frag_offset + ret == 0)
1032 return ret < 0 ? ret : AVERROR_EOF;
1033 if (asf_st->ds_span > 1) {
1034 // scrambling, we can either drop it completely or fill the remainder
1035 // TODO: should we fill the whole packet instead of just the current
1037 memset(asf_st->pkt.data + asf->packet_frag_offset + ret, 0,
1038 asf->packet_frag_size - ret);
1039 ret = asf->packet_frag_size;
1041 // no scrambling, so we can return partial packets
1042 av_shrink_packet(&asf_st->pkt, asf->packet_frag_offset + ret);
1044 if (s->key && s->keylen == 20)
1045 ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
1047 asf_st->frag_offset += ret;
1048 /* test if whole packet is read */
1049 if (asf_st->frag_offset == asf_st->pkt.size) {
1050 //workaround for macroshit radio DVR-MS files
1051 if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
1052 && asf_st->pkt.size > 100){
1054 for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
1055 if(i == asf_st->pkt.size){
1056 av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
1057 asf_st->frag_offset = 0;
1058 av_free_packet(&asf_st->pkt);
1064 if (asf_st->ds_span > 1) {
1065 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
1066 av_log(s, AV_LOG_ERROR, "pkt.size != ds_packet_size * ds_span (%d %d %d)\n", asf_st->pkt.size, asf_st->ds_packet_size, asf_st->ds_span);
1068 /* packet descrambling */
1069 uint8_t *newdata = av_malloc(asf_st->pkt.size + FF_INPUT_BUFFER_PADDING_SIZE);
1072 memset(newdata + asf_st->pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1073 while (offset < asf_st->pkt.size) {
1074 int off = offset / asf_st->ds_chunk_size;
1075 int row = off / asf_st->ds_span;
1076 int col = off % asf_st->ds_span;
1077 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
1078 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
1080 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
1081 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
1082 memcpy(newdata + offset,
1083 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
1084 asf_st->ds_chunk_size);
1085 offset += asf_st->ds_chunk_size;
1087 av_free(asf_st->pkt.data);
1088 asf_st->pkt.data = newdata;
1092 asf_st->frag_offset = 0;
1094 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
1095 asf_st->pkt.size = 0;
1096 asf_st->pkt.data = 0;
1097 asf_st->pkt.side_data_elems = 0;
1098 asf_st->pkt.side_data = NULL;
1099 break; // packet completed
1105 static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
1107 ASFContext *asf = s->priv_data;
1112 /* parse cached packets, if any */
1113 if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0)
1115 if ((ret = ff_asf_get_packet(s, s->pb)) < 0)
1116 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
1117 asf->packet_time_start = 0;
1121 // Added to support seeking after packets have been read
1122 // If information is not reset, read_packet fails due to
1123 // leftover information from previous reads
1124 static void asf_reset_header(AVFormatContext *s)
1126 ASFContext *asf = s->priv_data;
1130 asf->packet_size_left = 0;
1131 asf->packet_segments = 0;
1132 asf->packet_flags = 0;
1133 asf->packet_property = 0;
1134 asf->packet_timestamp = 0;
1135 asf->packet_segsizetype = 0;
1136 asf->packet_segments = 0;
1137 asf->packet_seq = 0;
1138 asf->packet_replic_size = 0;
1139 asf->packet_key_frame = 0;
1140 asf->packet_padsize = 0;
1141 asf->packet_frag_offset = 0;
1142 asf->packet_frag_size = 0;
1143 asf->packet_frag_timestamp = 0;
1144 asf->packet_multi_size = 0;
1145 asf->packet_obj_size = 0;
1146 asf->packet_time_delta = 0;
1147 asf->packet_time_start = 0;
1149 for(i=0; i<s->nb_streams; i++){
1150 asf_st= s->streams[i]->priv_data;
1151 av_free_packet(&asf_st->pkt);
1152 asf_st->frag_offset=0;
1158 static int asf_read_close(AVFormatContext *s)
1160 asf_reset_header(s);
1165 static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
1167 AVPacket pkt1, *pkt = &pkt1;
1172 int64_t start_pos[ASF_MAX_STREAMS];
1174 for(i=0; i<s->nb_streams; i++){
1178 if (s->packet_size > 0)
1179 pos= (pos+s->packet_size-1-s->data_offset)/s->packet_size*s->packet_size+ s->data_offset;
1181 if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1182 return AV_NOPTS_VALUE;
1184 //printf("asf_read_pts\n");
1185 asf_reset_header(s);
1187 if (av_read_frame(s, pkt) < 0){
1188 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
1189 return AV_NOPTS_VALUE;
1194 av_free_packet(pkt);
1195 if(pkt->flags&AV_PKT_FLAG_KEY){
1196 i= pkt->stream_index;
1198 asf_st= s->streams[i]->priv_data;
1200 // assert((asf_st->packet_pos - s->data_offset) % s->packet_size == 0);
1201 pos= asf_st->packet_pos;
1203 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
1204 start_pos[i]= asf_st->packet_pos + 1;
1206 if(pkt->stream_index == stream_index)
1212 //printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
1217 static void asf_build_simple_index(AVFormatContext *s, int stream_index)
1220 ASFContext *asf = s->priv_data;
1221 int64_t current_pos= avio_tell(s->pb);
1223 if(avio_seek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET) < 0) {
1224 asf->index_read= -1;
1228 ff_get_guid(s->pb, &g);
1230 /* the data object can be followed by other top-level objects,
1231 skip them until the simple index object is reached */
1232 while (ff_guidcmp(&g, &ff_asf_simple_index_header)) {
1233 int64_t gsize= avio_rl64(s->pb);
1234 if (gsize < 24 || url_feof(s->pb)) {
1235 avio_seek(s->pb, current_pos, SEEK_SET);
1236 asf->index_read= -1;
1239 avio_skip(s->pb, gsize-24);
1240 ff_get_guid(s->pb, &g);
1244 int64_t itime, last_pos=-1;
1247 int64_t av_unused gsize= avio_rl64(s->pb);
1248 ff_get_guid(s->pb, &g);
1249 itime=avio_rl64(s->pb);
1250 pct=avio_rl32(s->pb);
1251 ict=avio_rl32(s->pb);
1252 av_log(s, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
1254 for (i=0;i<ict;i++){
1255 int pktnum=avio_rl32(s->pb);
1256 int pktct =avio_rl16(s->pb);
1257 int64_t pos = s->data_offset + s->packet_size*(int64_t)pktnum;
1258 int64_t index_pts= FFMAX(av_rescale(itime, i, 10000) - asf->hdr.preroll, 0);
1260 if(pos != last_pos){
1261 av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d pts: %"PRId64"\n", pktnum, pktct, index_pts);
1262 av_add_index_entry(s->streams[stream_index], pos, index_pts, s->packet_size, 0, AVINDEX_KEYFRAME);
1266 asf->index_read= ict > 0;
1268 avio_seek(s->pb, current_pos, SEEK_SET);
1271 static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
1273 ASFContext *asf = s->priv_data;
1274 AVStream *st = s->streams[stream_index];
1276 if (s->packet_size <= 0)
1279 /* Try using the protocol's read_seek if available */
1281 int ret = avio_seek_time(s->pb, stream_index, pts, flags);
1283 asf_reset_header(s);
1284 if (ret != AVERROR(ENOSYS))
1288 if (!asf->index_read)
1289 asf_build_simple_index(s, stream_index);
1291 if((asf->index_read > 0 && st->index_entries)){
1292 int index= av_index_search_timestamp(st, pts, flags);
1294 /* find the position */
1295 uint64_t pos = st->index_entries[index].pos;
1298 av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
1299 if(avio_seek(s->pb, pos, SEEK_SET) < 0)
1301 asf_reset_header(s);
1305 /* no index or seeking by index failed */
1306 if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1308 asf_reset_header(s);
1312 AVInputFormat ff_asf_demuxer = {
1314 .long_name = NULL_IF_CONFIG_SMALL("ASF format"),
1315 .priv_data_size = sizeof(ASFContext),
1316 .read_probe = asf_probe,
1317 .read_header = asf_read_header,
1318 .read_packet = asf_read_packet,
1319 .read_close = asf_read_close,
1320 .read_seek = asf_read_seek,
1321 .read_timestamp = asf_read_pts,
1322 .flags = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH,
1323 .priv_class = &asf_class,