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 "libavcodec/mpegaudio.h"
32 #include "avio_internal.h"
36 #include "avlanguage.h"
39 int asfid2avid[128]; ///< conversion table from asf ID 2 AVStream ID
40 ASFStream streams[128]; ///< it's max number and it's not that big
41 uint32_t stream_bitrates[128]; ///< max number of streams, bitrate for each (for streaming)
43 char stream_languages[128][6]; ///< max number of streams, language for each (RFC1766, e.g. en-US)
44 /* non streamed additonnal info */
47 /* only for reading */
48 uint64_t data_offset; ///< beginning of the first data packet
49 uint64_t data_object_offset; ///< data object offset (excl. GUID & size)
50 uint64_t data_object_size; ///< size of the data object
58 int packet_segsizetype;
61 int packet_replic_size;
64 unsigned int packet_frag_offset;
65 unsigned int packet_frag_size;
66 int64_t packet_frag_timestamp;
67 int packet_multi_size;
69 int packet_time_delta;
70 int packet_time_start;
75 ASFStream* asf_st; ///< currently decoded stream
81 #define ASF_MAX_STREAMS 127
82 #define FRAME_HEADER_SIZE 17
83 // Fix Me! FRAME_HEADER_SIZE may be different.
85 static const ff_asf_guid index_guid = {
86 0x90, 0x08, 0x00, 0x33, 0xb1, 0xe5, 0xcf, 0x11, 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb
90 static const ff_asf_guid stream_bitrate_guid = { /* (http://get.to/sdp) */
91 0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2
94 #define PRINT_IF_GUID(g,cmp) \
95 if (!ff_guidcmp(g, &cmp)) \
96 av_dlog(NULL, "(GUID: %s) ", #cmp)
98 static void print_guid(const ff_asf_guid *g)
101 PRINT_IF_GUID(g, ff_asf_header);
102 else PRINT_IF_GUID(g, ff_asf_file_header);
103 else PRINT_IF_GUID(g, ff_asf_stream_header);
104 else PRINT_IF_GUID(g, ff_asf_audio_stream);
105 else PRINT_IF_GUID(g, ff_asf_audio_conceal_none);
106 else PRINT_IF_GUID(g, ff_asf_video_stream);
107 else PRINT_IF_GUID(g, ff_asf_video_conceal_none);
108 else PRINT_IF_GUID(g, ff_asf_command_stream);
109 else PRINT_IF_GUID(g, ff_asf_comment_header);
110 else PRINT_IF_GUID(g, ff_asf_codec_comment_header);
111 else PRINT_IF_GUID(g, ff_asf_codec_comment1_header);
112 else PRINT_IF_GUID(g, ff_asf_data_header);
113 else PRINT_IF_GUID(g, index_guid);
114 else PRINT_IF_GUID(g, ff_asf_head1_guid);
115 else PRINT_IF_GUID(g, ff_asf_head2_guid);
116 else PRINT_IF_GUID(g, ff_asf_my_guid);
117 else PRINT_IF_GUID(g, ff_asf_ext_stream_header);
118 else PRINT_IF_GUID(g, ff_asf_extended_content_header);
119 else PRINT_IF_GUID(g, ff_asf_ext_stream_embed_stream_header);
120 else PRINT_IF_GUID(g, ff_asf_ext_stream_audio_stream);
121 else PRINT_IF_GUID(g, ff_asf_metadata_header);
122 else PRINT_IF_GUID(g, ff_asf_marker_header);
123 else PRINT_IF_GUID(g, stream_bitrate_guid);
124 else PRINT_IF_GUID(g, ff_asf_language_guid);
126 av_dlog(NULL, "(GUID: unknown) ");
128 av_dlog(NULL, " 0x%02x,", (*g)[i]);
129 av_dlog(NULL, "}\n");
133 #define print_guid(g)
136 static int asf_probe(AVProbeData *pd)
138 /* check file header */
139 if (!ff_guidcmp(pd->buf, &ff_asf_header))
140 return AVPROBE_SCORE_MAX;
145 static int get_value(AVIOContext *pb, int type){
147 case 2: return avio_rl32(pb);
148 case 3: return avio_rl32(pb);
149 case 4: return avio_rl64(pb);
150 case 5: return avio_rl16(pb);
151 default:return INT_MIN;
155 static void get_tag(AVFormatContext *s, const char *key, int type, int len)
158 int64_t off = avio_tell(s->pb);
160 if ((unsigned)len >= (UINT_MAX - 1)/2)
163 value = av_malloc(2*len+1);
167 if (type == 0) { // UTF16-LE
168 avio_get_str16le(s->pb, len, value, 2*len + 1);
169 } else if (type == -1) { // ASCII
170 avio_read(s->pb, value, len);
172 } else if (type > 1 && type <= 5) { // boolean or DWORD or QWORD or WORD
173 uint64_t num = get_value(s->pb, type);
174 snprintf(value, len, "%"PRIu64, num);
176 av_log(s, AV_LOG_DEBUG, "Unsupported value type %d in tag %s.\n", type, key);
180 av_dict_set(&s->metadata, key, value, 0);
183 avio_seek(s->pb, off + len, SEEK_SET);
186 static int asf_read_file_properties(AVFormatContext *s, int64_t size)
188 ASFContext *asf = s->priv_data;
189 AVIOContext *pb = s->pb;
191 ff_get_guid(pb, &asf->hdr.guid);
192 asf->hdr.file_size = avio_rl64(pb);
193 asf->hdr.create_time = avio_rl64(pb);
194 avio_rl64(pb); /* number of packets */
195 asf->hdr.play_time = avio_rl64(pb);
196 asf->hdr.send_time = avio_rl64(pb);
197 asf->hdr.preroll = avio_rl32(pb);
198 asf->hdr.ignore = avio_rl32(pb);
199 asf->hdr.flags = avio_rl32(pb);
200 asf->hdr.min_pktsize = avio_rl32(pb);
201 asf->hdr.max_pktsize = avio_rl32(pb);
202 asf->hdr.max_bitrate = avio_rl32(pb);
203 s->packet_size = asf->hdr.max_pktsize;
208 static int asf_read_stream_properties(AVFormatContext *s, int64_t size)
210 ASFContext *asf = s->priv_data;
211 AVIOContext *pb = s->pb;
215 enum AVMediaType type;
216 int type_specific_size, sizeX;
218 int64_t pos1, pos2, start_time;
219 int test_for_ext_stream_audio, is_dvr_ms_audio=0;
221 if (s->nb_streams == ASF_MAX_STREAMS) {
222 av_log(s, AV_LOG_ERROR, "too many streams\n");
223 return AVERROR(EINVAL);
226 pos1 = avio_tell(pb);
228 st = avformat_new_stream(s, NULL);
230 return AVERROR(ENOMEM);
231 avpriv_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
232 asf_st = av_mallocz(sizeof(ASFStream));
234 return AVERROR(ENOMEM);
235 st->priv_data = asf_st;
236 start_time = asf->hdr.preroll;
238 asf_st->stream_language_index = 128; // invalid stream index means no language info
240 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
241 st->duration = asf->hdr.play_time /
242 (10000000 / 1000) - start_time;
246 test_for_ext_stream_audio = 0;
247 if (!ff_guidcmp(&g, &ff_asf_audio_stream)) {
248 type = AVMEDIA_TYPE_AUDIO;
249 } else if (!ff_guidcmp(&g, &ff_asf_video_stream)) {
250 type = AVMEDIA_TYPE_VIDEO;
251 } else if (!ff_guidcmp(&g, &ff_asf_jfif_media)) {
252 type = AVMEDIA_TYPE_VIDEO;
253 st->codec->codec_id = CODEC_ID_MJPEG;
254 } else if (!ff_guidcmp(&g, &ff_asf_command_stream)) {
255 type = AVMEDIA_TYPE_DATA;
256 } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_embed_stream_header)) {
257 test_for_ext_stream_audio = 1;
258 type = AVMEDIA_TYPE_UNKNOWN;
263 avio_skip(pb, 8); /* total_size */
264 type_specific_size = avio_rl32(pb);
266 st->id = avio_rl16(pb) & 0x7f; /* stream id */
267 // mapping of asf ID to AV stream ID;
268 asf->asfid2avid[st->id] = s->nb_streams - 1;
272 if (test_for_ext_stream_audio) {
274 if (!ff_guidcmp(&g, &ff_asf_ext_stream_audio_stream)) {
275 type = AVMEDIA_TYPE_AUDIO;
286 st->codec->codec_type = type;
287 if (type == AVMEDIA_TYPE_AUDIO) {
288 int ret = ff_get_wav_header(pb, st->codec, type_specific_size);
291 if (is_dvr_ms_audio) {
292 // codec_id and codec_tag are unreliable in dvr_ms
293 // files. Set them later by probing stream.
294 st->request_probe= 1;
295 st->codec->codec_tag = 0;
297 if (st->codec->codec_id == CODEC_ID_AAC) {
298 st->need_parsing = AVSTREAM_PARSE_NONE;
300 st->need_parsing = AVSTREAM_PARSE_FULL;
302 /* We have to init the frame size at some point .... */
303 pos2 = avio_tell(pb);
304 if (size >= (pos2 + 8 - pos1 + 24)) {
305 asf_st->ds_span = avio_r8(pb);
306 asf_st->ds_packet_size = avio_rl16(pb);
307 asf_st->ds_chunk_size = avio_rl16(pb);
308 avio_rl16(pb); //ds_data_size
309 avio_r8(pb); //ds_silence_data
311 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
312 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
313 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
314 if (asf_st->ds_span > 1) {
315 if (!asf_st->ds_chunk_size
316 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
317 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
318 asf_st->ds_span = 0; // disable descrambling
320 switch (st->codec->codec_id) {
322 st->codec->frame_size = MPA_FRAME_SIZE;
324 case CODEC_ID_PCM_S16LE:
325 case CODEC_ID_PCM_S16BE:
326 case CODEC_ID_PCM_U16LE:
327 case CODEC_ID_PCM_U16BE:
328 case CODEC_ID_PCM_S8:
329 case CODEC_ID_PCM_U8:
330 case CODEC_ID_PCM_ALAW:
331 case CODEC_ID_PCM_MULAW:
332 st->codec->frame_size = 1;
335 /* This is probably wrong, but it prevents a crash later */
336 st->codec->frame_size = 1;
339 } else if (type == AVMEDIA_TYPE_VIDEO &&
340 size - (avio_tell(pb) - pos1 + 24) >= 51) {
344 avio_rl16(pb); /* size */
345 sizeX= avio_rl32(pb); /* size */
346 st->codec->width = avio_rl32(pb);
347 st->codec->height = avio_rl32(pb);
348 /* not available for asf */
349 avio_rl16(pb); /* panes */
350 st->codec->bits_per_coded_sample = avio_rl16(pb); /* depth */
351 tag1 = avio_rl32(pb);
353 // av_log(s, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
355 st->codec->extradata_size = sizeX - 40;
356 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
357 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
360 /* Extract palette from extradata if bpp <= 8 */
361 /* This code assumes that extradata contains only palette */
362 /* This is true for all paletted codecs implemented in libavcodec */
363 if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
366 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
367 asf_st->palette[i] = av_bswap32(((uint32_t*)st->codec->extradata)[i]);
369 memcpy(asf_st->palette, st->codec->extradata,
370 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
372 asf_st->palette_changed = 1;
375 st->codec->codec_tag = tag1;
376 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag1);
377 if(tag1 == MKTAG('D', 'V', 'R', ' ')){
378 st->need_parsing = AVSTREAM_PARSE_FULL;
379 // 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
381 st->codec->height = 0;
382 av_freep(&st->codec->extradata);
383 st->codec->extradata_size=0;
385 if(st->codec->codec_id == CODEC_ID_H264)
386 st->need_parsing = AVSTREAM_PARSE_FULL_ONCE;
388 pos2 = avio_tell(pb);
389 avio_skip(pb, size - (pos2 - pos1 + 24));
394 static int asf_read_ext_stream_properties(AVFormatContext *s, int64_t size)
396 ASFContext *asf = s->priv_data;
397 AVIOContext *pb = s->pb;
399 int ext_len, payload_ext_ct, stream_ct, i;
400 uint32_t leak_rate, stream_num;
401 unsigned int stream_languageid_index;
403 avio_rl64(pb); // starttime
404 avio_rl64(pb); // endtime
405 leak_rate = avio_rl32(pb); // leak-datarate
406 avio_rl32(pb); // bucket-datasize
407 avio_rl32(pb); // init-bucket-fullness
408 avio_rl32(pb); // alt-leak-datarate
409 avio_rl32(pb); // alt-bucket-datasize
410 avio_rl32(pb); // alt-init-bucket-fullness
411 avio_rl32(pb); // max-object-size
412 avio_rl32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
413 stream_num = avio_rl16(pb); // stream-num
415 stream_languageid_index = avio_rl16(pb); // stream-language-id-index
416 if (stream_num < 128)
417 asf->streams[stream_num].stream_language_index = stream_languageid_index;
419 avio_rl64(pb); // avg frametime in 100ns units
420 stream_ct = avio_rl16(pb); //stream-name-count
421 payload_ext_ct = avio_rl16(pb); //payload-extension-system-count
423 if (stream_num < 128)
424 asf->stream_bitrates[stream_num] = leak_rate;
426 for (i=0; i<stream_ct; i++){
428 ext_len = avio_rl16(pb);
429 avio_skip(pb, ext_len);
432 for (i=0; i<payload_ext_ct; i++){
435 ext_len=avio_rl32(pb);
436 avio_skip(pb, ext_len);
442 static int asf_read_content_desc(AVFormatContext *s, int64_t size)
444 AVIOContext *pb = s->pb;
445 int len1, len2, len3, len4, len5;
447 len1 = avio_rl16(pb);
448 len2 = avio_rl16(pb);
449 len3 = avio_rl16(pb);
450 len4 = avio_rl16(pb);
451 len5 = avio_rl16(pb);
452 get_tag(s, "title" , 0, len1);
453 get_tag(s, "author" , 0, len2);
454 get_tag(s, "copyright", 0, len3);
455 get_tag(s, "comment" , 0, len4);
461 static int asf_read_ext_content_desc(AVFormatContext *s, int64_t size)
463 AVIOContext *pb = s->pb;
464 ASFContext *asf = s->priv_data;
465 int desc_count, i, ret;
467 desc_count = avio_rl16(pb);
468 for(i=0;i<desc_count;i++) {
469 int name_len,value_type,value_len;
472 name_len = avio_rl16(pb);
473 if (name_len%2) // must be even, broken lavf versions wrote len-1
475 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
476 avio_skip(pb, name_len - ret);
477 value_type = avio_rl16(pb);
478 value_len = avio_rl16(pb);
479 if (!value_type && value_len%2)
482 * My sample has that stream set to 0 maybe that mean the container.
483 * Asf stream count start at 1. I am using 0 to the container value since it's unused
485 if (!strcmp(name, "AspectRatioX")){
486 asf->dar[0].num= get_value(s->pb, value_type);
487 } else if(!strcmp(name, "AspectRatioY")){
488 asf->dar[0].den= get_value(s->pb, value_type);
490 get_tag(s, name, value_type, value_len);
496 static int asf_read_language_list(AVFormatContext *s, int64_t size)
498 AVIOContext *pb = s->pb;
499 ASFContext *asf = s->priv_data;
501 int stream_count = avio_rl16(pb);
502 for(j = 0; j < stream_count; j++) {
504 unsigned int lang_len = avio_r8(pb);
505 if ((ret = avio_get_str16le(pb, lang_len, lang, sizeof(lang))) < lang_len)
506 avio_skip(pb, lang_len - ret);
508 av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
514 static int asf_read_metadata(AVFormatContext *s, int64_t size)
516 AVIOContext *pb = s->pb;
517 ASFContext *asf = s->priv_data;
518 int n, stream_num, name_len, value_len, value_num;
525 avio_rl16(pb); //lang_list_index
526 stream_num= avio_rl16(pb);
527 name_len= avio_rl16(pb);
528 avio_skip(pb, 2); /* value_type */
529 value_len= avio_rl32(pb);
531 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
532 avio_skip(pb, name_len - ret);
533 //av_log(s, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
534 value_num= avio_rl16(pb);//we should use get_value() here but it does not work 2 is le16 here but le32 elsewhere
535 avio_skip(pb, value_len - 2);
538 if (!strcmp(name, "AspectRatioX")) asf->dar[stream_num].num= value_num;
539 else if(!strcmp(name, "AspectRatioY")) asf->dar[stream_num].den= value_num;
546 static int asf_read_marker(AVFormatContext *s, int64_t size)
548 AVIOContext *pb = s->pb;
549 int i, count, name_len, ret;
552 avio_rl64(pb); // reserved 16 bytes
553 avio_rl64(pb); // ...
554 count = avio_rl32(pb); // markers count
555 avio_rl16(pb); // reserved 2 bytes
556 name_len = avio_rl16(pb); // name length
557 for(i=0;i<name_len;i++){
558 avio_r8(pb); // skip the name
561 for(i=0;i<count;i++){
565 avio_rl64(pb); // offset, 8 bytes
566 pres_time = avio_rl64(pb); // presentation time
567 avio_rl16(pb); // entry length
568 avio_rl32(pb); // send time
569 avio_rl32(pb); // flags
570 name_len = avio_rl32(pb); // name length
571 if ((ret = avio_get_str16le(pb, name_len * 2, name, sizeof(name))) < name_len)
572 avio_skip(pb, name_len - ret);
573 avpriv_new_chapter(s, i, (AVRational){1, 10000000}, pres_time, AV_NOPTS_VALUE, name );
579 static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
581 ASFContext *asf = s->priv_data;
583 AVIOContext *pb = s->pb;
588 if (ff_guidcmp(&g, &ff_asf_header))
594 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
596 uint64_t gpos= avio_tell(pb);
598 gsize = avio_rl64(pb);
599 av_dlog(s, "%08"PRIx64": ", gpos);
601 av_dlog(s, " size=0x%"PRIx64"\n", gsize);
602 if (!ff_guidcmp(&g, &ff_asf_data_header)) {
603 asf->data_object_offset = avio_tell(pb);
604 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
605 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
606 asf->data_object_size = gsize - 24;
608 asf->data_object_size = (uint64_t)-1;
614 if (!ff_guidcmp(&g, &ff_asf_file_header)) {
615 asf_read_file_properties(s, gsize);
616 } else if (!ff_guidcmp(&g, &ff_asf_stream_header)) {
617 asf_read_stream_properties(s, gsize);
618 } else if (!ff_guidcmp(&g, &ff_asf_comment_header)) {
619 asf_read_content_desc(s, gsize);
620 } else if (!ff_guidcmp(&g, &ff_asf_language_guid)) {
621 asf_read_language_list(s, gsize);
622 } else if (!ff_guidcmp(&g, &ff_asf_extended_content_header)) {
623 asf_read_ext_content_desc(s, gsize);
624 } else if (!ff_guidcmp(&g, &ff_asf_metadata_header)) {
625 asf_read_metadata(s, gsize);
626 } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_header)) {
627 asf_read_ext_stream_properties(s, gsize);
629 // there could be a optional stream properties object to follow
630 // if so the next iteration will pick it up
632 } else if (!ff_guidcmp(&g, &ff_asf_head1_guid)) {
636 } else if (!ff_guidcmp(&g, &ff_asf_marker_header)) {
637 asf_read_marker(s, gsize);
638 } else if (url_feof(pb)) {
642 if (!ff_guidcmp(&g, &ff_asf_content_encryption)) {
645 av_log(s, AV_LOG_WARNING, "DRM protected stream detected, decoding will likely fail!\n");
647 av_log(s, AV_LOG_DEBUG, "Secret data:\n");
648 av_get_packet(pb, &pkt, len); av_hex_dump_log(s, AV_LOG_DEBUG, pkt.data, pkt.size); av_free_packet(&pkt);
650 get_tag(s, "ASF_Protection_Type", -1, len);
652 get_tag(s, "ASF_Key_ID", -1, len);
654 get_tag(s, "ASF_License_URL", -1, len);
655 } else if (!ff_guidcmp(&g, &ff_asf_ext_content_encryption)) {
656 av_log(s, AV_LOG_WARNING, "Ext DRM protected stream detected, decoding will likely fail!\n");
657 av_dict_set(&s->metadata, "encryption", "ASF Extended Content Encryption", 0);
658 } else if (!ff_guidcmp(&g, &ff_asf_digital_signature)) {
659 av_log(s, AV_LOG_INFO, "Digital signature detected!\n");
663 if(avio_tell(pb) != gpos + gsize)
664 av_log(s, AV_LOG_DEBUG, "gpos mismatch our pos=%"PRIu64", end=%"PRIu64"\n", avio_tell(pb)-gpos, gsize);
665 avio_seek(pb, gpos + gsize, SEEK_SET);
673 asf->data_offset = avio_tell(pb);
674 asf->packet_size_left = 0;
677 for(i=0; i<128; i++){
678 int stream_num= asf->asfid2avid[i];
680 AVStream *st = s->streams[stream_num];
681 if (!st->codec->bit_rate)
682 st->codec->bit_rate = asf->stream_bitrates[i];
683 if (asf->dar[i].num > 0 && asf->dar[i].den > 0){
684 av_reduce(&st->sample_aspect_ratio.num,
685 &st->sample_aspect_ratio.den,
686 asf->dar[i].num, asf->dar[i].den, INT_MAX);
687 } 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.
688 av_reduce(&st->sample_aspect_ratio.num,
689 &st->sample_aspect_ratio.den,
690 asf->dar[0].num, asf->dar[0].den, INT_MAX);
692 //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);
694 // copy and convert language codes to the frontend
695 if (asf->streams[i].stream_language_index < 128) {
696 const char *rfc1766 = asf->stream_languages[asf->streams[i].stream_language_index];
697 if (rfc1766 && strlen(rfc1766) > 1) {
698 const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
699 const char *iso6392 = av_convert_lang_to(primary_tag, AV_LANG_ISO639_2_BIBL);
701 av_dict_set(&st->metadata, "language", iso6392, 0);
707 ff_metadata_conv(&s->metadata, NULL, ff_asf_metadata_conv);
712 #define DO_2BITS(bits, var, defval) \
715 case 3: var = avio_rl32(pb); rsize += 4; break; \
716 case 2: var = avio_rl16(pb); rsize += 2; break; \
717 case 1: var = avio_r8(pb); rsize++; break; \
718 default: var = defval; break; \
722 * Load a single ASF packet into the demuxer.
723 * @param s demux context
724 * @param pb context to read data from
725 * @return 0 on success, <0 on error
727 static int ff_asf_get_packet(AVFormatContext *s, AVIOContext *pb)
729 ASFContext *asf = s->priv_data;
730 uint32_t packet_length, padsize;
734 // if we do not know packet size, allow skipping up to 32 kB
736 if (s->packet_size > 0)
737 off= (avio_tell(pb) - s->data_offset) % s->packet_size + 3;
743 if(c == 0x82 && !d && !e)
749 * This code allows handling of -EAGAIN at packet boundaries (i.e.
750 * if the packet sync code above triggers -EAGAIN). This does not
751 * imply complete -EAGAIN handling support at random positions in
754 if (pb->error == AVERROR(EAGAIN))
755 return AVERROR(EAGAIN);
757 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, avio_tell(pb));
759 if ((c & 0x8f) == 0x82) {
762 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
769 avio_seek(pb, -1, SEEK_CUR); //FIXME
772 asf->packet_flags = c;
773 asf->packet_property = d;
775 DO_2BITS(asf->packet_flags >> 5, packet_length, s->packet_size);
776 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
777 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
779 //the following checks prevent overflows and infinite loops
780 if(!packet_length || packet_length >= (1U<<29)){
781 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, avio_tell(pb));
784 if(padsize >= packet_length){
785 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, avio_tell(pb));
789 asf->packet_timestamp = avio_rl32(pb);
790 avio_rl16(pb); /* duration */
791 // rsize has at least 11 bytes which have to be present
793 if (asf->packet_flags & 0x01) {
794 asf->packet_segsizetype = avio_r8(pb); rsize++;
795 asf->packet_segments = asf->packet_segsizetype & 0x3f;
797 asf->packet_segments = 1;
798 asf->packet_segsizetype = 0x80;
800 asf->packet_size_left = packet_length - padsize - rsize;
801 if (packet_length < asf->hdr.min_pktsize)
802 padsize += asf->hdr.min_pktsize - packet_length;
803 asf->packet_padsize = padsize;
804 av_dlog(s, "packet: size=%d padsize=%d left=%d\n", s->packet_size, asf->packet_padsize, asf->packet_size_left);
810 * @return <0 if error
812 static int asf_read_frame_header(AVFormatContext *s, AVIOContext *pb){
813 ASFContext *asf = s->priv_data;
815 int num = avio_r8(pb);
816 int64_t ts0, ts1 av_unused;
818 asf->packet_segments--;
819 asf->packet_key_frame = num >> 7;
820 asf->stream_index = asf->asfid2avid[num & 0x7f];
821 // sequence should be ignored!
822 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
823 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
824 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
825 //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);
826 if (rsize+asf->packet_replic_size > asf->packet_size_left) {
827 av_log(s, AV_LOG_ERROR, "packet_replic_size %d is invalid\n", asf->packet_replic_size);
830 if (asf->packet_replic_size >= 8) {
831 asf->packet_obj_size = avio_rl32(pb);
832 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
833 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
836 asf->packet_frag_timestamp = avio_rl32(pb); // timestamp
837 if(asf->packet_replic_size >= 8+38+4){
838 // for(i=0; i<asf->packet_replic_size-8; i++)
839 // av_log(s, AV_LOG_DEBUG, "%02X ",avio_r8(pb));
840 // av_log(s, AV_LOG_DEBUG, "\n");
846 avio_skip(pb, asf->packet_replic_size - 8 - 38 - 4);
847 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
848 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
850 avio_skip(pb, asf->packet_replic_size - 8);
851 rsize += asf->packet_replic_size; // FIXME - check validity
852 } else if (asf->packet_replic_size==1){
853 // multipacket - frag_offset is beginning timestamp
854 asf->packet_time_start = asf->packet_frag_offset;
855 asf->packet_frag_offset = 0;
856 asf->packet_frag_timestamp = asf->packet_timestamp;
858 asf->packet_time_delta = avio_r8(pb);
860 }else if(asf->packet_replic_size!=0){
861 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
864 if (asf->packet_flags & 0x01) {
865 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
866 if (rsize > asf->packet_size_left) {
867 av_log(s, AV_LOG_ERROR, "packet_replic_size is invalid\n");
869 } else if(asf->packet_frag_size > asf->packet_size_left - rsize){
870 if (asf->packet_frag_size > asf->packet_size_left - rsize + asf->packet_padsize) {
871 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid (%d-%d)\n", asf->packet_size_left, rsize);
874 int diff = asf->packet_frag_size - (asf->packet_size_left - rsize);
875 asf->packet_size_left += diff;
876 asf->packet_padsize -= diff;
879 //printf("Fragsize %d\n", asf->packet_frag_size);
881 asf->packet_frag_size = asf->packet_size_left - rsize;
882 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
884 if (asf->packet_replic_size == 1) {
885 asf->packet_multi_size = asf->packet_frag_size;
886 if (asf->packet_multi_size > asf->packet_size_left)
889 asf->packet_size_left -= rsize;
890 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
896 * Parse data from individual ASF packets (which were previously loaded
897 * with asf_get_packet()).
898 * @param s demux context
899 * @param pb context to read data from
900 * @param pkt pointer to store packet data into
901 * @return 0 if data was stored in pkt, <0 on error or 1 if more ASF
902 * packets need to be loaded (through asf_get_packet())
904 static int ff_asf_parse_packet(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
906 ASFContext *asf = s->priv_data;
907 ASFStream *asf_st = 0;
912 if (asf->packet_size_left < FRAME_HEADER_SIZE
913 || asf->packet_segments < 1) {
914 //asf->packet_size_left <= asf->packet_padsize) {
915 int ret = asf->packet_size_left + asf->packet_padsize;
916 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, avio_tell(pb));
921 asf->packet_pos= avio_tell(pb);
922 if (asf->data_object_size != (uint64_t)-1 &&
923 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
924 return AVERROR_EOF; /* Do not exceed the size of the data object */
927 if (asf->packet_time_start == 0) {
928 if(asf_read_frame_header(s, pb) < 0){
929 asf->packet_segments= 0;
932 if (asf->stream_index < 0
933 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
934 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
936 asf->packet_time_start = 0;
937 /* unhandled packet (should not happen) */
938 avio_skip(pb, asf->packet_frag_size);
939 asf->packet_size_left -= asf->packet_frag_size;
940 if(asf->stream_index < 0)
941 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
944 asf->asf_st = s->streams[asf->stream_index]->priv_data;
946 asf_st = asf->asf_st;
948 if (asf->packet_replic_size == 1) {
949 // frag_offset is here used as the beginning timestamp
950 asf->packet_frag_timestamp = asf->packet_time_start;
951 asf->packet_time_start += asf->packet_time_delta;
952 asf->packet_obj_size = asf->packet_frag_size = avio_r8(pb);
953 asf->packet_size_left--;
954 asf->packet_multi_size--;
955 if (asf->packet_multi_size < asf->packet_obj_size)
957 asf->packet_time_start = 0;
958 avio_skip(pb, asf->packet_multi_size);
959 asf->packet_size_left -= asf->packet_multi_size;
962 asf->packet_multi_size -= asf->packet_obj_size;
963 //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);
965 if( /*asf->packet_frag_size == asf->packet_obj_size*/
966 asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
967 && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
968 av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
969 asf_st->frag_offset, asf->packet_frag_size,
970 asf->packet_obj_size, asf_st->pkt.size);
971 asf->packet_obj_size= asf_st->pkt.size;
974 if ( asf_st->pkt.size != asf->packet_obj_size
975 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
976 if(asf_st->pkt.data){
977 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
978 asf_st->frag_offset = 0;
979 av_free_packet(&asf_st->pkt);
982 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
983 asf_st->seq = asf->packet_seq;
984 asf_st->pkt.dts = asf->packet_frag_timestamp - asf->hdr.preroll;
985 asf_st->pkt.stream_index = asf->stream_index;
987 asf_st->packet_pos= asf->packet_pos;
988 if (asf_st->pkt.data && asf_st->palette_changed) {
990 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE,
993 av_log(s, AV_LOG_ERROR, "Cannot append palette to packet\n");
995 memcpy(pal, asf_st->palette, AVPALETTE_SIZE);
996 asf_st->palette_changed = 0;
999 //printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
1000 //asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & AV_PKT_FLAG_KEY,
1001 //s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO, asf->packet_obj_size);
1002 if (s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1003 asf->packet_key_frame = 1;
1004 if (asf->packet_key_frame)
1005 asf_st->pkt.flags |= AV_PKT_FLAG_KEY;
1009 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
1010 // s->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
1011 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
1012 asf->packet_size_left -= asf->packet_frag_size;
1013 if (asf->packet_size_left < 0)
1016 if( asf->packet_frag_offset >= asf_st->pkt.size
1017 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
1018 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
1019 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
1023 ret = avio_read(pb, asf_st->pkt.data + asf->packet_frag_offset,
1024 asf->packet_frag_size);
1025 if (ret != asf->packet_frag_size) {
1026 if (ret < 0 || asf->packet_frag_offset + ret == 0)
1027 return ret < 0 ? ret : AVERROR_EOF;
1028 if (asf_st->ds_span > 1) {
1029 // scrambling, we can either drop it completely or fill the remainder
1030 // TODO: should we fill the whole packet instead of just the current
1032 memset(asf_st->pkt.data + asf->packet_frag_offset + ret, 0,
1033 asf->packet_frag_size - ret);
1034 ret = asf->packet_frag_size;
1036 // no scrambling, so we can return partial packets
1037 av_shrink_packet(&asf_st->pkt, asf->packet_frag_offset + ret);
1039 if (s->key && s->keylen == 20)
1040 ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
1042 asf_st->frag_offset += ret;
1043 /* test if whole packet is read */
1044 if (asf_st->frag_offset == asf_st->pkt.size) {
1045 //workaround for macroshit radio DVR-MS files
1046 if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
1047 && asf_st->pkt.size > 100){
1049 for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
1050 if(i == asf_st->pkt.size){
1051 av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
1052 asf_st->frag_offset = 0;
1053 av_free_packet(&asf_st->pkt);
1059 if (asf_st->ds_span > 1) {
1060 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
1061 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);
1063 /* packet descrambling */
1064 uint8_t *newdata = av_malloc(asf_st->pkt.size + FF_INPUT_BUFFER_PADDING_SIZE);
1067 memset(newdata + asf_st->pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1068 while (offset < asf_st->pkt.size) {
1069 int off = offset / asf_st->ds_chunk_size;
1070 int row = off / asf_st->ds_span;
1071 int col = off % asf_st->ds_span;
1072 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
1073 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
1075 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
1076 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
1077 memcpy(newdata + offset,
1078 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
1079 asf_st->ds_chunk_size);
1080 offset += asf_st->ds_chunk_size;
1082 av_free(asf_st->pkt.data);
1083 asf_st->pkt.data = newdata;
1087 asf_st->frag_offset = 0;
1089 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
1090 asf_st->pkt.size = 0;
1091 asf_st->pkt.data = 0;
1092 break; // packet completed
1098 static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
1100 ASFContext *asf = s->priv_data;
1105 /* parse cached packets, if any */
1106 if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0)
1108 if ((ret = ff_asf_get_packet(s, s->pb)) < 0)
1109 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
1110 asf->packet_time_start = 0;
1114 // Added to support seeking after packets have been read
1115 // If information is not reset, read_packet fails due to
1116 // leftover information from previous reads
1117 static void asf_reset_header(AVFormatContext *s)
1119 ASFContext *asf = s->priv_data;
1123 asf->packet_size_left = 0;
1124 asf->packet_segments = 0;
1125 asf->packet_flags = 0;
1126 asf->packet_property = 0;
1127 asf->packet_timestamp = 0;
1128 asf->packet_segsizetype = 0;
1129 asf->packet_segments = 0;
1130 asf->packet_seq = 0;
1131 asf->packet_replic_size = 0;
1132 asf->packet_key_frame = 0;
1133 asf->packet_padsize = 0;
1134 asf->packet_frag_offset = 0;
1135 asf->packet_frag_size = 0;
1136 asf->packet_frag_timestamp = 0;
1137 asf->packet_multi_size = 0;
1138 asf->packet_obj_size = 0;
1139 asf->packet_time_delta = 0;
1140 asf->packet_time_start = 0;
1142 for(i=0; i<s->nb_streams; i++){
1143 asf_st= s->streams[i]->priv_data;
1144 av_free_packet(&asf_st->pkt);
1145 asf_st->frag_offset=0;
1151 static int asf_read_close(AVFormatContext *s)
1153 asf_reset_header(s);
1158 static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
1160 AVPacket pkt1, *pkt = &pkt1;
1165 int64_t start_pos[ASF_MAX_STREAMS];
1167 for(i=0; i<s->nb_streams; i++){
1171 if (s->packet_size > 0)
1172 pos= (pos+s->packet_size-1-s->data_offset)/s->packet_size*s->packet_size+ s->data_offset;
1174 if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1175 return AV_NOPTS_VALUE;
1177 //printf("asf_read_pts\n");
1178 asf_reset_header(s);
1180 if (av_read_frame(s, pkt) < 0){
1181 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
1182 return AV_NOPTS_VALUE;
1187 av_free_packet(pkt);
1188 if(pkt->flags&AV_PKT_FLAG_KEY){
1189 i= pkt->stream_index;
1191 asf_st= s->streams[i]->priv_data;
1193 // assert((asf_st->packet_pos - s->data_offset) % s->packet_size == 0);
1194 pos= asf_st->packet_pos;
1196 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
1197 start_pos[i]= asf_st->packet_pos + 1;
1199 if(pkt->stream_index == stream_index)
1205 //printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
1210 static void asf_build_simple_index(AVFormatContext *s, int stream_index)
1213 ASFContext *asf = s->priv_data;
1214 int64_t current_pos= avio_tell(s->pb);
1217 if(avio_seek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET) < 0) {
1218 asf->index_read= -1;
1222 ff_get_guid(s->pb, &g);
1224 /* the data object can be followed by other top-level objects,
1225 skip them until the simple index object is reached */
1226 while (ff_guidcmp(&g, &index_guid)) {
1227 int64_t gsize= avio_rl64(s->pb);
1228 if (gsize < 24 || url_feof(s->pb)) {
1229 avio_seek(s->pb, current_pos, SEEK_SET);
1230 asf->index_read= -1;
1233 avio_skip(s->pb, gsize-24);
1234 ff_get_guid(s->pb, &g);
1238 int64_t itime, last_pos=-1;
1240 int64_t av_unused gsize= avio_rl64(s->pb);
1241 ff_get_guid(s->pb, &g);
1242 itime=avio_rl64(s->pb);
1243 pct=avio_rl32(s->pb);
1244 ict=avio_rl32(s->pb);
1245 av_log(s, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
1247 for (i=0;i<ict;i++){
1248 int pktnum=avio_rl32(s->pb);
1249 int pktct =avio_rl16(s->pb);
1250 int64_t pos = s->data_offset + s->packet_size*(int64_t)pktnum;
1251 int64_t index_pts= FFMAX(av_rescale(itime, i, 10000) - asf->hdr.preroll, 0);
1253 if(pos != last_pos){
1254 av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d pts: %"PRId64"\n", pktnum, pktct, index_pts);
1255 av_add_index_entry(s->streams[stream_index], pos, index_pts, s->packet_size, 0, AVINDEX_KEYFRAME);
1261 avio_seek(s->pb, current_pos, SEEK_SET);
1264 static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
1266 ASFContext *asf = s->priv_data;
1267 AVStream *st = s->streams[stream_index];
1271 if (s->packet_size <= 0)
1274 /* Try using the protocol's read_seek if available */
1276 int ret = avio_seek_time(s->pb, stream_index, pts, flags);
1278 asf_reset_header(s);
1279 if (ret != AVERROR(ENOSYS))
1283 if (!asf->index_read)
1284 asf_build_simple_index(s, stream_index);
1286 if((asf->index_read > 0 && st->index_entries)){
1287 index= av_index_search_timestamp(st, pts, flags);
1289 /* find the position */
1290 pos = st->index_entries[index].pos;
1293 av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
1294 if(avio_seek(s->pb, pos, SEEK_SET) < 0)
1296 asf_reset_header(s);
1300 /* no index or seeking by index failed */
1301 if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1303 asf_reset_header(s);
1307 AVInputFormat ff_asf_demuxer = {
1309 .long_name = NULL_IF_CONFIG_SMALL("ASF format"),
1310 .priv_data_size = sizeof(ASFContext),
1311 .read_probe = asf_probe,
1312 .read_header = asf_read_header,
1313 .read_packet = asf_read_packet,
1314 .read_close = asf_read_close,
1315 .read_seek = asf_read_seek,
1316 .read_timestamp = asf_read_pts,
1317 .flags = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH,