2 * ASF compatible demuxer
3 * Copyright (c) 2000, 2001 Fabrice Bellard
5 * This file is part of Libav.
7 * Libav 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 * Libav 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 Libav; 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 "libavcodec/mpegaudio.h"
29 #include "avio_internal.h"
33 #include "avlanguage.h"
36 int asfid2avid[128]; ///< conversion table from asf ID 2 AVStream ID
37 ASFStream streams[128]; ///< it's max number and it's not that big
38 uint32_t stream_bitrates[128]; ///< max number of streams, bitrate for each (for streaming)
40 char stream_languages[128][6]; ///< max number of streams, language for each (RFC1766, e.g. en-US)
41 /* non streamed additonnal info */
44 /* only for reading */
45 uint64_t data_offset; ///< beginning of the first data packet
46 uint64_t data_object_offset; ///< data object offset (excl. GUID & size)
47 uint64_t data_object_size; ///< size of the data object
55 int packet_segsizetype;
58 int packet_replic_size;
61 unsigned int packet_frag_offset;
62 unsigned int packet_frag_size;
63 int64_t packet_frag_timestamp;
64 int packet_multi_size;
66 int packet_time_delta;
67 int packet_time_start;
72 ASFStream* asf_st; ///< currently decoded stream
78 #define ASF_MAX_STREAMS 127
79 #define FRAME_HEADER_SIZE 17
80 // Fix Me! FRAME_HEADER_SIZE may be different.
82 static const ff_asf_guid index_guid = {
83 0x90, 0x08, 0x00, 0x33, 0xb1, 0xe5, 0xcf, 0x11, 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb
86 static const ff_asf_guid stream_bitrate_guid = { /* (http://get.to/sdp) */
87 0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2
89 /**********************************/
93 #define PRINT_IF_GUID(g,cmp) \
94 if (!ff_guidcmp(g, &cmp)) \
95 av_dlog(NULL, "(GUID: %s) ", #cmp)
97 static void print_guid(const ff_asf_guid *g)
100 PRINT_IF_GUID(g, ff_asf_header);
101 else PRINT_IF_GUID(g, ff_asf_file_header);
102 else PRINT_IF_GUID(g, ff_asf_stream_header);
103 else PRINT_IF_GUID(g, ff_asf_audio_stream);
104 else PRINT_IF_GUID(g, ff_asf_audio_conceal_none);
105 else PRINT_IF_GUID(g, ff_asf_video_stream);
106 else PRINT_IF_GUID(g, ff_asf_video_conceal_none);
107 else PRINT_IF_GUID(g, ff_asf_command_stream);
108 else PRINT_IF_GUID(g, ff_asf_comment_header);
109 else PRINT_IF_GUID(g, ff_asf_codec_comment_header);
110 else PRINT_IF_GUID(g, ff_asf_codec_comment1_header);
111 else PRINT_IF_GUID(g, ff_asf_data_header);
112 else PRINT_IF_GUID(g, index_guid);
113 else PRINT_IF_GUID(g, ff_asf_head1_guid);
114 else PRINT_IF_GUID(g, ff_asf_head2_guid);
115 else PRINT_IF_GUID(g, ff_asf_my_guid);
116 else PRINT_IF_GUID(g, ff_asf_ext_stream_header);
117 else PRINT_IF_GUID(g, ff_asf_extended_content_header);
118 else PRINT_IF_GUID(g, ff_asf_ext_stream_embed_stream_header);
119 else PRINT_IF_GUID(g, ff_asf_ext_stream_audio_stream);
120 else PRINT_IF_GUID(g, ff_asf_metadata_header);
121 else PRINT_IF_GUID(g, ff_asf_marker_header);
122 else PRINT_IF_GUID(g, stream_bitrate_guid);
123 else PRINT_IF_GUID(g, ff_asf_language_guid);
125 av_dlog(NULL, "(GUID: unknown) ");
127 av_dlog(NULL, " 0x%02x,", (*g)[i]);
128 av_dlog(NULL, "}\n");
132 #define print_guid(g)
135 void ff_get_guid(AVIOContext *s, ff_asf_guid *g)
137 assert(sizeof(*g) == 16);
138 avio_read(s, *g, sizeof(*g));
141 static int asf_probe(AVProbeData *pd)
143 /* check file header */
144 if (!ff_guidcmp(pd->buf, &ff_asf_header))
145 return AVPROBE_SCORE_MAX;
150 static int get_value(AVIOContext *pb, int type){
152 case 2: return avio_rl32(pb);
153 case 3: return avio_rl32(pb);
154 case 4: return avio_rl64(pb);
155 case 5: return avio_rl16(pb);
156 default:return INT_MIN;
160 static void get_tag(AVFormatContext *s, const char *key, int type, int len)
163 int64_t off = avio_tell(s->pb);
165 if ((unsigned)len >= (UINT_MAX - 1)/2)
168 value = av_malloc(2*len+1);
172 if (type == 0) { // UTF16-LE
173 avio_get_str16le(s->pb, len, value, 2*len + 1);
174 } else if (type > 1 && type <= 5) { // boolean or DWORD or QWORD or WORD
175 uint64_t num = get_value(s->pb, type);
176 snprintf(value, len, "%"PRIu64, num);
178 av_log(s, AV_LOG_DEBUG, "Unsupported value type %d in tag %s.\n", type, key);
182 av_metadata_set2(&s->metadata, key, value, 0);
185 avio_seek(s->pb, off + len, SEEK_SET);
188 static int asf_read_file_properties(AVFormatContext *s, int64_t size)
190 ASFContext *asf = s->priv_data;
191 AVIOContext *pb = s->pb;
193 ff_get_guid(pb, &asf->hdr.guid);
194 asf->hdr.file_size = avio_rl64(pb);
195 asf->hdr.create_time = avio_rl64(pb);
196 avio_rl64(pb); /* number of packets */
197 asf->hdr.play_time = avio_rl64(pb);
198 asf->hdr.send_time = avio_rl64(pb);
199 asf->hdr.preroll = avio_rl32(pb);
200 asf->hdr.ignore = avio_rl32(pb);
201 asf->hdr.flags = avio_rl32(pb);
202 asf->hdr.min_pktsize = avio_rl32(pb);
203 asf->hdr.max_pktsize = avio_rl32(pb);
204 asf->hdr.max_bitrate = avio_rl32(pb);
205 s->packet_size = asf->hdr.max_pktsize;
210 static int asf_read_stream_properties(AVFormatContext *s, int64_t size)
212 ASFContext *asf = s->priv_data;
213 AVIOContext *pb = s->pb;
217 enum AVMediaType type;
218 int type_specific_size, sizeX;
221 int64_t pos1, pos2, start_time;
222 int test_for_ext_stream_audio, is_dvr_ms_audio=0;
224 if (s->nb_streams == ASF_MAX_STREAMS) {
225 av_log(s, AV_LOG_ERROR, "too many streams\n");
226 return AVERROR(EINVAL);
229 pos1 = avio_tell(pb);
231 st = av_new_stream(s, 0);
233 return AVERROR(ENOMEM);
234 av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
235 asf_st = av_mallocz(sizeof(ASFStream));
237 return AVERROR(ENOMEM);
238 st->priv_data = asf_st;
240 start_time = asf->hdr.preroll;
242 asf_st->stream_language_index = 128; // invalid stream index means no language info
244 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
245 st->duration = asf->hdr.play_time /
246 (10000000 / 1000) - start_time;
250 test_for_ext_stream_audio = 0;
251 if (!ff_guidcmp(&g, &ff_asf_audio_stream)) {
252 type = AVMEDIA_TYPE_AUDIO;
253 } else if (!ff_guidcmp(&g, &ff_asf_video_stream)) {
254 type = AVMEDIA_TYPE_VIDEO;
255 } else if (!ff_guidcmp(&g, &ff_asf_jfif_media)) {
256 type = AVMEDIA_TYPE_VIDEO;
257 st->codec->codec_id = CODEC_ID_MJPEG;
258 } else if (!ff_guidcmp(&g, &ff_asf_command_stream)) {
259 type = AVMEDIA_TYPE_DATA;
260 } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_embed_stream_header)) {
261 test_for_ext_stream_audio = 1;
262 type = AVMEDIA_TYPE_UNKNOWN;
267 total_size = avio_rl64(pb);
268 type_specific_size = avio_rl32(pb);
270 st->id = avio_rl16(pb) & 0x7f; /* stream id */
271 // mapping of asf ID to AV stream ID;
272 asf->asfid2avid[st->id] = s->nb_streams - 1;
276 if (test_for_ext_stream_audio) {
278 if (!ff_guidcmp(&g, &ff_asf_ext_stream_audio_stream)) {
279 type = AVMEDIA_TYPE_AUDIO;
290 st->codec->codec_type = type;
291 if (type == AVMEDIA_TYPE_AUDIO) {
292 int ret = ff_get_wav_header(pb, st->codec, type_specific_size);
295 if (is_dvr_ms_audio) {
296 // codec_id and codec_tag are unreliable in dvr_ms
297 // files. Set them later by probing stream.
298 st->codec->codec_id = CODEC_ID_PROBE;
299 st->codec->codec_tag = 0;
301 if (st->codec->codec_id == CODEC_ID_AAC) {
302 st->need_parsing = AVSTREAM_PARSE_NONE;
304 st->need_parsing = AVSTREAM_PARSE_FULL;
306 /* We have to init the frame size at some point .... */
307 pos2 = avio_tell(pb);
308 if (size >= (pos2 + 8 - pos1 + 24)) {
309 asf_st->ds_span = avio_r8(pb);
310 asf_st->ds_packet_size = avio_rl16(pb);
311 asf_st->ds_chunk_size = avio_rl16(pb);
312 avio_rl16(pb); //ds_data_size
313 avio_r8(pb); //ds_silence_data
315 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
316 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
317 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
318 if (asf_st->ds_span > 1) {
319 if (!asf_st->ds_chunk_size
320 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
321 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
322 asf_st->ds_span = 0; // disable descrambling
324 switch (st->codec->codec_id) {
326 st->codec->frame_size = MPA_FRAME_SIZE;
328 case CODEC_ID_PCM_S16LE:
329 case CODEC_ID_PCM_S16BE:
330 case CODEC_ID_PCM_U16LE:
331 case CODEC_ID_PCM_U16BE:
332 case CODEC_ID_PCM_S8:
333 case CODEC_ID_PCM_U8:
334 case CODEC_ID_PCM_ALAW:
335 case CODEC_ID_PCM_MULAW:
336 st->codec->frame_size = 1;
339 /* This is probably wrong, but it prevents a crash later */
340 st->codec->frame_size = 1;
343 } else if (type == AVMEDIA_TYPE_VIDEO &&
344 size - (avio_tell(pb) - pos1 + 24) >= 51) {
348 avio_rl16(pb); /* size */
349 sizeX= avio_rl32(pb); /* size */
350 st->codec->width = avio_rl32(pb);
351 st->codec->height = avio_rl32(pb);
352 /* not available for asf */
353 avio_rl16(pb); /* panes */
354 st->codec->bits_per_coded_sample = avio_rl16(pb); /* depth */
355 tag1 = avio_rl32(pb);
357 // av_log(s, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
359 st->codec->extradata_size = sizeX - 40;
360 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
361 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
364 /* Extract palette from extradata if bpp <= 8 */
365 /* This code assumes that extradata contains only palette */
366 /* This is true for all paletted codecs implemented in ffmpeg */
367 if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
370 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
371 asf_st->palette[i] = av_bswap32(((uint32_t*)st->codec->extradata)[i]);
373 memcpy(asf_st->palette, st->codec->extradata,
374 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
376 asf_st->palette_changed = 1;
379 st->codec->codec_tag = tag1;
380 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag1);
381 if(tag1 == MKTAG('D', 'V', 'R', ' ')){
382 st->need_parsing = AVSTREAM_PARSE_FULL;
383 // 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
385 st->codec->height = 0;
386 av_freep(&st->codec->extradata);
387 st->codec->extradata_size=0;
389 if(st->codec->codec_id == CODEC_ID_H264)
390 st->need_parsing = AVSTREAM_PARSE_FULL_ONCE;
392 pos2 = avio_tell(pb);
393 avio_skip(pb, size - (pos2 - pos1 + 24));
398 static int asf_read_ext_stream_properties(AVFormatContext *s, int64_t size)
400 ASFContext *asf = s->priv_data;
401 AVIOContext *pb = s->pb;
403 int ext_len, payload_ext_ct, stream_ct, i;
404 uint32_t ext_d, leak_rate, stream_num;
405 unsigned int stream_languageid_index;
407 avio_rl64(pb); // starttime
408 avio_rl64(pb); // endtime
409 leak_rate = avio_rl32(pb); // leak-datarate
410 avio_rl32(pb); // bucket-datasize
411 avio_rl32(pb); // init-bucket-fullness
412 avio_rl32(pb); // alt-leak-datarate
413 avio_rl32(pb); // alt-bucket-datasize
414 avio_rl32(pb); // alt-init-bucket-fullness
415 avio_rl32(pb); // max-object-size
416 avio_rl32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
417 stream_num = avio_rl16(pb); // stream-num
419 stream_languageid_index = avio_rl16(pb); // stream-language-id-index
420 if (stream_num < 128)
421 asf->streams[stream_num].stream_language_index = stream_languageid_index;
423 avio_rl64(pb); // avg frametime in 100ns units
424 stream_ct = avio_rl16(pb); //stream-name-count
425 payload_ext_ct = avio_rl16(pb); //payload-extension-system-count
427 if (stream_num < 128)
428 asf->stream_bitrates[stream_num] = leak_rate;
430 for (i=0; i<stream_ct; i++){
432 ext_len = avio_rl16(pb);
433 avio_skip(pb, ext_len);
436 for (i=0; i<payload_ext_ct; i++){
439 ext_len=avio_rl32(pb);
440 avio_skip(pb, ext_len);
446 static int asf_read_content_desc(AVFormatContext *s, int64_t size)
448 AVIOContext *pb = s->pb;
449 int len1, len2, len3, len4, len5;
451 len1 = avio_rl16(pb);
452 len2 = avio_rl16(pb);
453 len3 = avio_rl16(pb);
454 len4 = avio_rl16(pb);
455 len5 = avio_rl16(pb);
456 get_tag(s, "title" , 0, len1);
457 get_tag(s, "author" , 0, len2);
458 get_tag(s, "copyright", 0, len3);
459 get_tag(s, "comment" , 0, len4);
465 static int asf_read_ext_content_desc(AVFormatContext *s, int64_t size)
467 AVIOContext *pb = s->pb;
468 ASFContext *asf = s->priv_data;
469 int desc_count, i, ret;
471 desc_count = avio_rl16(pb);
472 for(i=0;i<desc_count;i++) {
473 int name_len,value_type,value_len;
476 name_len = avio_rl16(pb);
477 if (name_len%2) // must be even, broken lavf versions wrote len-1
479 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
480 avio_skip(pb, name_len - ret);
481 value_type = avio_rl16(pb);
482 value_len = avio_rl16(pb);
483 if (!value_type && value_len%2)
486 * My sample has that stream set to 0 maybe that mean the container.
487 * Asf stream count start at 1. I am using 0 to the container value since it's unused
489 if (!strcmp(name, "AspectRatioX")){
490 asf->dar[0].num= get_value(s->pb, value_type);
491 } else if(!strcmp(name, "AspectRatioY")){
492 asf->dar[0].den= get_value(s->pb, value_type);
494 get_tag(s, name, value_type, value_len);
500 static int asf_read_language_list(AVFormatContext *s, int64_t size)
502 AVIOContext *pb = s->pb;
503 ASFContext *asf = s->priv_data;
505 int stream_count = avio_rl16(pb);
506 for(j = 0; j < stream_count; j++) {
508 unsigned int lang_len = avio_r8(pb);
509 if ((ret = avio_get_str16le(pb, lang_len, lang, sizeof(lang))) < lang_len)
510 avio_skip(pb, lang_len - ret);
512 av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
518 static int asf_read_metadata(AVFormatContext *s, int64_t size)
520 AVIOContext *pb = s->pb;
521 ASFContext *asf = s->priv_data;
522 int n, stream_num, name_len, value_len, value_type, value_num;
529 avio_rl16(pb); //lang_list_index
530 stream_num= avio_rl16(pb);
531 name_len= avio_rl16(pb);
532 value_type= avio_rl16(pb);
533 value_len= avio_rl32(pb);
535 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
536 avio_skip(pb, name_len - ret);
537 //av_log(s, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
538 value_num= avio_rl16(pb);//we should use get_value() here but it does not work 2 is le16 here but le32 elsewhere
539 avio_skip(pb, value_len - 2);
542 if (!strcmp(name, "AspectRatioX")) asf->dar[stream_num].num= value_num;
543 else if(!strcmp(name, "AspectRatioY")) asf->dar[stream_num].den= value_num;
550 static int asf_read_marker(AVFormatContext *s, int64_t size)
552 AVIOContext *pb = s->pb;
553 int i, count, name_len, ret;
556 avio_rl64(pb); // reserved 16 bytes
557 avio_rl64(pb); // ...
558 count = avio_rl32(pb); // markers count
559 avio_rl16(pb); // reserved 2 bytes
560 name_len = avio_rl16(pb); // name length
561 for(i=0;i<name_len;i++){
562 avio_r8(pb); // skip the name
565 for(i=0;i<count;i++){
569 avio_rl64(pb); // offset, 8 bytes
570 pres_time = avio_rl64(pb); // presentation time
571 avio_rl16(pb); // entry length
572 avio_rl32(pb); // send time
573 avio_rl32(pb); // flags
574 name_len = avio_rl32(pb); // name length
575 if ((ret = avio_get_str16le(pb, name_len * 2, name, sizeof(name))) < name_len)
576 avio_skip(pb, name_len - ret);
577 ff_new_chapter(s, i, (AVRational){1, 10000000}, pres_time, AV_NOPTS_VALUE, name );
583 static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
585 ASFContext *asf = s->priv_data;
587 AVIOContext *pb = s->pb;
592 if (ff_guidcmp(&g, &ff_asf_header))
598 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
600 uint64_t gpos= avio_tell(pb);
602 gsize = avio_rl64(pb);
603 av_dlog(s, "%08"PRIx64": ", gpos);
605 av_dlog(s, " size=0x%"PRIx64"\n", gsize);
606 if (!ff_guidcmp(&g, &ff_asf_data_header)) {
607 asf->data_object_offset = avio_tell(pb);
608 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
609 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
610 asf->data_object_size = gsize - 24;
612 asf->data_object_size = (uint64_t)-1;
618 if (!ff_guidcmp(&g, &ff_asf_file_header)) {
619 asf_read_file_properties(s, gsize);
620 } else if (!ff_guidcmp(&g, &ff_asf_stream_header)) {
621 asf_read_stream_properties(s, gsize);
622 } else if (!ff_guidcmp(&g, &ff_asf_comment_header)) {
623 asf_read_content_desc(s, gsize);
624 } else if (!ff_guidcmp(&g, &ff_asf_language_guid)) {
625 asf_read_language_list(s, gsize);
626 } else if (!ff_guidcmp(&g, &ff_asf_extended_content_header)) {
627 asf_read_ext_content_desc(s, gsize);
628 } else if (!ff_guidcmp(&g, &ff_asf_metadata_header)) {
629 asf_read_metadata(s, gsize);
630 } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_header)) {
631 asf_read_ext_stream_properties(s, gsize);
633 // there could be a optional stream properties object to follow
634 // if so the next iteration will pick it up
636 } else if (!ff_guidcmp(&g, &ff_asf_head1_guid)) {
642 } else if (!ff_guidcmp(&g, &ff_asf_marker_header)) {
643 asf_read_marker(s, gsize);
644 } else if (pb->eof_reached) {
648 if (!ff_guidcmp(&g, &ff_asf_content_encryption)) {
649 av_log(s, AV_LOG_WARNING, "DRM protected stream detected, decoding will likely fail!\n");
650 } else if (!ff_guidcmp(&g, &ff_asf_ext_content_encryption)) {
651 av_log(s, AV_LOG_WARNING, "Ext DRM protected stream detected, decoding will likely fail!\n");
652 } else if (!ff_guidcmp(&g, &ff_asf_digital_signature)) {
653 av_log(s, AV_LOG_WARNING, "Digital signature detected, decoding will likely fail!\n");
657 if(avio_tell(pb) != gpos + gsize)
658 av_log(s, AV_LOG_DEBUG, "gpos mismatch our pos=%"PRIu64", end=%"PRIu64"\n", avio_tell(pb)-gpos, gsize);
659 avio_seek(pb, gpos + gsize, SEEK_SET);
667 asf->data_offset = avio_tell(pb);
668 asf->packet_size_left = 0;
671 for(i=0; i<128; i++){
672 int stream_num= asf->asfid2avid[i];
674 AVStream *st = s->streams[stream_num];
675 if (!st->codec->bit_rate)
676 st->codec->bit_rate = asf->stream_bitrates[i];
677 if (asf->dar[i].num > 0 && asf->dar[i].den > 0){
678 av_reduce(&st->sample_aspect_ratio.num,
679 &st->sample_aspect_ratio.den,
680 asf->dar[i].num, asf->dar[i].den, INT_MAX);
681 } 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.
682 av_reduce(&st->sample_aspect_ratio.num,
683 &st->sample_aspect_ratio.den,
684 asf->dar[0].num, asf->dar[0].den, INT_MAX);
686 //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);
688 // copy and convert language codes to the frontend
689 if (asf->streams[i].stream_language_index < 128) {
690 const char *rfc1766 = asf->stream_languages[asf->streams[i].stream_language_index];
691 if (rfc1766 && strlen(rfc1766) > 1) {
692 const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
693 const char *iso6392 = av_convert_lang_to(primary_tag, AV_LANG_ISO639_2_BIBL);
695 av_metadata_set2(&st->metadata, "language", iso6392, 0);
701 ff_metadata_conv(&s->metadata, NULL, ff_asf_metadata_conv);
706 #define DO_2BITS(bits, var, defval) \
709 case 3: var = avio_rl32(pb); rsize += 4; break; \
710 case 2: var = avio_rl16(pb); rsize += 2; break; \
711 case 1: var = avio_r8(pb); rsize++; break; \
712 default: var = defval; break; \
716 * Load a single ASF packet into the demuxer.
717 * @param s demux context
718 * @param pb context to read data from
719 * @return 0 on success, <0 on error
721 static int ff_asf_get_packet(AVFormatContext *s, AVIOContext *pb)
723 ASFContext *asf = s->priv_data;
724 uint32_t packet_length, padsize;
728 // if we do not know packet size, allow skipping up to 32 kB
730 if (s->packet_size > 0)
731 off= (avio_tell(pb) - s->data_offset) % s->packet_size + 3;
737 if(c == 0x82 && !d && !e)
743 * This code allows handling of -EAGAIN at packet boundaries (i.e.
744 * if the packet sync code above triggers -EAGAIN). This does not
745 * imply complete -EAGAIN handling support at random positions in
748 if (pb->error == AVERROR(EAGAIN))
749 return AVERROR(EAGAIN);
750 if (!pb->eof_reached)
751 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, avio_tell(pb));
753 if ((c & 0x8f) == 0x82) {
755 if (!pb->eof_reached)
756 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
763 avio_seek(pb, -1, SEEK_CUR); //FIXME
766 asf->packet_flags = c;
767 asf->packet_property = d;
769 DO_2BITS(asf->packet_flags >> 5, packet_length, s->packet_size);
770 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
771 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
773 //the following checks prevent overflows and infinite loops
774 if(!packet_length || packet_length >= (1U<<29)){
775 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, avio_tell(pb));
778 if(padsize >= packet_length){
779 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, avio_tell(pb));
783 asf->packet_timestamp = avio_rl32(pb);
784 avio_rl16(pb); /* duration */
785 // rsize has at least 11 bytes which have to be present
787 if (asf->packet_flags & 0x01) {
788 asf->packet_segsizetype = avio_r8(pb); rsize++;
789 asf->packet_segments = asf->packet_segsizetype & 0x3f;
791 asf->packet_segments = 1;
792 asf->packet_segsizetype = 0x80;
794 asf->packet_size_left = packet_length - padsize - rsize;
795 if (packet_length < asf->hdr.min_pktsize)
796 padsize += asf->hdr.min_pktsize - packet_length;
797 asf->packet_padsize = padsize;
798 av_dlog(s, "packet: size=%d padsize=%d left=%d\n", s->packet_size, asf->packet_padsize, asf->packet_size_left);
804 * @return <0 if error
806 static int asf_read_frame_header(AVFormatContext *s, AVIOContext *pb){
807 ASFContext *asf = s->priv_data;
809 int num = avio_r8(pb);
812 asf->packet_segments--;
813 asf->packet_key_frame = num >> 7;
814 asf->stream_index = asf->asfid2avid[num & 0x7f];
815 // sequence should be ignored!
816 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
817 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
818 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
819 //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);
820 if (asf->packet_replic_size >= 8) {
821 asf->packet_obj_size = avio_rl32(pb);
822 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
823 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
826 asf->packet_frag_timestamp = avio_rl32(pb); // timestamp
827 if(asf->packet_replic_size >= 8+38+4){
828 // for(i=0; i<asf->packet_replic_size-8; i++)
829 // av_log(s, AV_LOG_DEBUG, "%02X ",avio_r8(pb));
830 // av_log(s, AV_LOG_DEBUG, "\n");
836 avio_skip(pb, asf->packet_replic_size - 8 - 38 - 4);
837 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
838 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
840 avio_skip(pb, asf->packet_replic_size - 8);
841 rsize += asf->packet_replic_size; // FIXME - check validity
842 } else if (asf->packet_replic_size==1){
843 // multipacket - frag_offset is beginning timestamp
844 asf->packet_time_start = asf->packet_frag_offset;
845 asf->packet_frag_offset = 0;
846 asf->packet_frag_timestamp = asf->packet_timestamp;
848 asf->packet_time_delta = avio_r8(pb);
850 }else if(asf->packet_replic_size!=0){
851 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
854 if (asf->packet_flags & 0x01) {
855 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
856 if (rsize > asf->packet_size_left) {
857 av_log(s, AV_LOG_ERROR, "packet_replic_size is invalid\n");
859 } else if(asf->packet_frag_size > asf->packet_size_left - rsize){
860 if (asf->packet_frag_size > asf->packet_size_left - rsize + asf->packet_padsize) {
861 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid (%d-%d)\n", asf->packet_size_left, rsize);
864 int diff = asf->packet_frag_size - (asf->packet_size_left - rsize);
865 asf->packet_size_left += diff;
866 asf->packet_padsize -= diff;
869 //printf("Fragsize %d\n", asf->packet_frag_size);
871 if (rsize > asf->packet_size_left) {
872 av_log(s, AV_LOG_ERROR, "packet_replic_size is invalid\n");
875 asf->packet_frag_size = asf->packet_size_left - rsize;
876 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
878 if (asf->packet_replic_size == 1) {
879 asf->packet_multi_size = asf->packet_frag_size;
880 if (asf->packet_multi_size > asf->packet_size_left)
883 asf->packet_size_left -= rsize;
884 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
890 * Parse data from individual ASF packets (which were previously loaded
891 * with asf_get_packet()).
892 * @param s demux context
893 * @param pb context to read data from
894 * @param pkt pointer to store packet data into
895 * @return 0 if data was stored in pkt, <0 on error or 1 if more ASF
896 * packets need to be loaded (through asf_get_packet())
898 static int ff_asf_parse_packet(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
900 ASFContext *asf = s->priv_data;
901 ASFStream *asf_st = 0;
906 if (asf->packet_size_left < FRAME_HEADER_SIZE
907 || asf->packet_segments < 1) {
908 //asf->packet_size_left <= asf->packet_padsize) {
909 int ret = asf->packet_size_left + asf->packet_padsize;
910 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, avio_tell(pb));
915 asf->packet_pos= avio_tell(pb);
916 if (asf->data_object_size != (uint64_t)-1 &&
917 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
918 return AVERROR_EOF; /* Do not exceed the size of the data object */
921 if (asf->packet_time_start == 0) {
922 if(asf_read_frame_header(s, pb) < 0){
923 asf->packet_segments= 0;
926 if (asf->stream_index < 0
927 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
928 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
930 asf->packet_time_start = 0;
931 /* unhandled packet (should not happen) */
932 avio_skip(pb, asf->packet_frag_size);
933 asf->packet_size_left -= asf->packet_frag_size;
934 if(asf->stream_index < 0)
935 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
938 asf->asf_st = s->streams[asf->stream_index]->priv_data;
940 asf_st = asf->asf_st;
942 if (asf->packet_replic_size == 1) {
943 // frag_offset is here used as the beginning timestamp
944 asf->packet_frag_timestamp = asf->packet_time_start;
945 asf->packet_time_start += asf->packet_time_delta;
946 asf->packet_obj_size = asf->packet_frag_size = avio_r8(pb);
947 asf->packet_size_left--;
948 asf->packet_multi_size--;
949 if (asf->packet_multi_size < asf->packet_obj_size)
951 asf->packet_time_start = 0;
952 avio_skip(pb, asf->packet_multi_size);
953 asf->packet_size_left -= asf->packet_multi_size;
956 asf->packet_multi_size -= asf->packet_obj_size;
957 //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);
959 if( /*asf->packet_frag_size == asf->packet_obj_size*/
960 asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
961 && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
962 av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
963 asf_st->frag_offset, asf->packet_frag_size,
964 asf->packet_obj_size, asf_st->pkt.size);
965 asf->packet_obj_size= asf_st->pkt.size;
968 if ( asf_st->pkt.size != asf->packet_obj_size
969 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
970 if(asf_st->pkt.data){
971 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
972 asf_st->frag_offset = 0;
973 av_free_packet(&asf_st->pkt);
976 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
977 asf_st->seq = asf->packet_seq;
978 asf_st->pkt.dts = asf->packet_frag_timestamp - asf->hdr.preroll;
979 asf_st->pkt.stream_index = asf->stream_index;
981 asf_st->packet_pos= asf->packet_pos;
982 if (asf_st->pkt.data && asf_st->palette_changed) {
984 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE,
987 av_log(s, AV_LOG_ERROR, "Cannot append palette to packet\n");
989 memcpy(pal, asf_st->palette, AVPALETTE_SIZE);
990 asf_st->palette_changed = 0;
993 //printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
994 //asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & AV_PKT_FLAG_KEY,
995 //s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO, asf->packet_obj_size);
996 if (s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO)
997 asf->packet_key_frame = 1;
998 if (asf->packet_key_frame)
999 asf_st->pkt.flags |= AV_PKT_FLAG_KEY;
1003 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
1004 // s->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
1005 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
1006 asf->packet_size_left -= asf->packet_frag_size;
1007 if (asf->packet_size_left < 0)
1010 if( asf->packet_frag_offset >= asf_st->pkt.size
1011 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
1012 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
1013 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
1017 ret = avio_read(pb, asf_st->pkt.data + asf->packet_frag_offset,
1018 asf->packet_frag_size);
1019 if (ret != asf->packet_frag_size) {
1020 if (ret < 0 || asf->packet_frag_offset + ret == 0)
1021 return ret < 0 ? ret : AVERROR_EOF;
1022 if (asf_st->ds_span > 1) {
1023 // scrambling, we can either drop it completely or fill the remainder
1024 // TODO: should we fill the whole packet instead of just the current
1026 memset(asf_st->pkt.data + asf->packet_frag_offset + ret, 0,
1027 asf->packet_frag_size - ret);
1028 ret = asf->packet_frag_size;
1030 // no scrambling, so we can return partial packets
1031 av_shrink_packet(&asf_st->pkt, asf->packet_frag_offset + ret);
1033 if (s->key && s->keylen == 20)
1034 ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
1036 asf_st->frag_offset += ret;
1037 /* test if whole packet is read */
1038 if (asf_st->frag_offset == asf_st->pkt.size) {
1039 //workaround for macroshit radio DVR-MS files
1040 if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
1041 && asf_st->pkt.size > 100){
1043 for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
1044 if(i == asf_st->pkt.size){
1045 av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
1046 asf_st->frag_offset = 0;
1047 av_free_packet(&asf_st->pkt);
1053 if (asf_st->ds_span > 1) {
1054 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
1055 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);
1057 /* packet descrambling */
1058 uint8_t *newdata = av_malloc(asf_st->pkt.size + FF_INPUT_BUFFER_PADDING_SIZE);
1061 memset(newdata + asf_st->pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1062 while (offset < asf_st->pkt.size) {
1063 int off = offset / asf_st->ds_chunk_size;
1064 int row = off / asf_st->ds_span;
1065 int col = off % asf_st->ds_span;
1066 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
1067 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
1069 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
1070 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
1071 memcpy(newdata + offset,
1072 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
1073 asf_st->ds_chunk_size);
1074 offset += asf_st->ds_chunk_size;
1076 av_free(asf_st->pkt.data);
1077 asf_st->pkt.data = newdata;
1081 asf_st->frag_offset = 0;
1083 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
1084 asf_st->pkt.size = 0;
1085 asf_st->pkt.data = 0;
1086 break; // packet completed
1092 static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
1094 ASFContext *asf = s->priv_data;
1099 /* parse cached packets, if any */
1100 if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0)
1102 if ((ret = ff_asf_get_packet(s, s->pb)) < 0)
1103 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
1104 asf->packet_time_start = 0;
1110 // Added to support seeking after packets have been read
1111 // If information is not reset, read_packet fails due to
1112 // leftover information from previous reads
1113 static void asf_reset_header(AVFormatContext *s)
1115 ASFContext *asf = s->priv_data;
1119 asf->packet_size_left = 0;
1120 asf->packet_segments = 0;
1121 asf->packet_flags = 0;
1122 asf->packet_property = 0;
1123 asf->packet_timestamp = 0;
1124 asf->packet_segsizetype = 0;
1125 asf->packet_segments = 0;
1126 asf->packet_seq = 0;
1127 asf->packet_replic_size = 0;
1128 asf->packet_key_frame = 0;
1129 asf->packet_padsize = 0;
1130 asf->packet_frag_offset = 0;
1131 asf->packet_frag_size = 0;
1132 asf->packet_frag_timestamp = 0;
1133 asf->packet_multi_size = 0;
1134 asf->packet_obj_size = 0;
1135 asf->packet_time_delta = 0;
1136 asf->packet_time_start = 0;
1138 for(i=0; i<s->nb_streams; i++){
1139 asf_st= s->streams[i]->priv_data;
1140 av_free_packet(&asf_st->pkt);
1141 asf_st->frag_offset=0;
1147 static int asf_read_close(AVFormatContext *s)
1149 asf_reset_header(s);
1154 static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
1156 AVPacket pkt1, *pkt = &pkt1;
1161 int64_t start_pos[ASF_MAX_STREAMS];
1163 for(i=0; i<s->nb_streams; i++){
1167 if (s->packet_size > 0)
1168 pos= (pos+s->packet_size-1-s->data_offset)/s->packet_size*s->packet_size+ s->data_offset;
1170 avio_seek(s->pb, pos, SEEK_SET);
1172 //printf("asf_read_pts\n");
1173 asf_reset_header(s);
1175 if (av_read_frame(s, pkt) < 0){
1176 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
1177 return AV_NOPTS_VALUE;
1182 av_free_packet(pkt);
1183 if(pkt->flags&AV_PKT_FLAG_KEY){
1184 i= pkt->stream_index;
1186 asf_st= s->streams[i]->priv_data;
1188 // assert((asf_st->packet_pos - s->data_offset) % s->packet_size == 0);
1189 pos= asf_st->packet_pos;
1191 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
1192 start_pos[i]= asf_st->packet_pos + 1;
1194 if(pkt->stream_index == stream_index)
1200 //printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
1205 static void asf_build_simple_index(AVFormatContext *s, int stream_index)
1208 ASFContext *asf = s->priv_data;
1209 int64_t current_pos= avio_tell(s->pb);
1212 avio_seek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
1213 ff_get_guid(s->pb, &g);
1215 /* the data object can be followed by other top-level objects,
1216 skip them until the simple index object is reached */
1217 while (ff_guidcmp(&g, &index_guid)) {
1218 int64_t gsize= avio_rl64(s->pb);
1219 if (gsize < 24 || s->pb->eof_reached) {
1220 avio_seek(s->pb, current_pos, SEEK_SET);
1223 avio_skip(s->pb, gsize-24);
1224 ff_get_guid(s->pb, &g);
1228 int64_t itime, last_pos=-1;
1230 int64_t av_unused gsize= avio_rl64(s->pb);
1231 ff_get_guid(s->pb, &g);
1232 itime=avio_rl64(s->pb);
1233 pct=avio_rl32(s->pb);
1234 ict=avio_rl32(s->pb);
1235 av_log(s, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
1237 for (i=0;i<ict;i++){
1238 int pktnum=avio_rl32(s->pb);
1239 int pktct =avio_rl16(s->pb);
1240 int64_t pos = s->data_offset + s->packet_size*(int64_t)pktnum;
1241 int64_t index_pts= FFMAX(av_rescale(itime, i, 10000) - asf->hdr.preroll, 0);
1243 if(pos != last_pos){
1244 av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d pts: %"PRId64"\n", pktnum, pktct, index_pts);
1245 av_add_index_entry(s->streams[stream_index], pos, index_pts, s->packet_size, 0, AVINDEX_KEYFRAME);
1251 avio_seek(s->pb, current_pos, SEEK_SET);
1254 static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
1256 ASFContext *asf = s->priv_data;
1257 AVStream *st = s->streams[stream_index];
1261 if (s->packet_size <= 0)
1264 /* Try using the protocol's read_seek if available */
1266 int ret = avio_seek_time(s->pb, stream_index, pts, flags);
1268 asf_reset_header(s);
1269 if (ret != AVERROR(ENOSYS))
1273 if (!asf->index_read)
1274 asf_build_simple_index(s, stream_index);
1276 if((asf->index_read && st->index_entries)){
1277 index= av_index_search_timestamp(st, pts, flags);
1279 /* find the position */
1280 pos = st->index_entries[index].pos;
1283 av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
1284 avio_seek(s->pb, pos, SEEK_SET);
1285 asf_reset_header(s);
1289 /* no index or seeking by index failed */
1290 if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
1292 asf_reset_header(s);
1296 AVInputFormat ff_asf_demuxer = {
1298 NULL_IF_CONFIG_SMALL("ASF format"),
1306 .flags = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH,