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"
31 #include "avio_internal.h"
35 #include "avlanguage.h"
38 int asfid2avid[128]; ///< conversion table from asf ID 2 AVStream ID
39 ASFStream streams[128]; ///< it's max number and it's not that big
40 uint32_t stream_bitrates[128]; ///< max number of streams, bitrate for each (for streaming)
42 char stream_languages[128][6]; ///< max number of streams, language for each (RFC1766, e.g. en-US)
43 /* non streamed additonnal info */
46 /* only for reading */
47 uint64_t data_offset; ///< beginning of the first data packet
48 uint64_t data_object_offset; ///< data object offset (excl. GUID & size)
49 uint64_t data_object_size; ///< size of the data object
57 int packet_segsizetype;
60 int packet_replic_size;
63 unsigned int packet_frag_offset;
64 unsigned int packet_frag_size;
65 int64_t packet_frag_timestamp;
66 int packet_multi_size;
68 int packet_time_delta;
69 int packet_time_start;
74 ASFStream* asf_st; ///< currently decoded stream
80 #define ASF_MAX_STREAMS 127
81 #define FRAME_HEADER_SIZE 17
82 // Fix Me! FRAME_HEADER_SIZE may be different.
85 static const ff_asf_guid stream_bitrate_guid = { /* (http://get.to/sdp) */
86 0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2
89 #define PRINT_IF_GUID(g,cmp) \
90 if (!ff_guidcmp(g, &cmp)) \
91 av_dlog(NULL, "(GUID: %s) ", #cmp)
93 static void print_guid(const ff_asf_guid *g)
96 PRINT_IF_GUID(g, ff_asf_header);
97 else PRINT_IF_GUID(g, ff_asf_file_header);
98 else PRINT_IF_GUID(g, ff_asf_stream_header);
99 else PRINT_IF_GUID(g, ff_asf_audio_stream);
100 else PRINT_IF_GUID(g, ff_asf_audio_conceal_none);
101 else PRINT_IF_GUID(g, ff_asf_video_stream);
102 else PRINT_IF_GUID(g, ff_asf_video_conceal_none);
103 else PRINT_IF_GUID(g, ff_asf_command_stream);
104 else PRINT_IF_GUID(g, ff_asf_comment_header);
105 else PRINT_IF_GUID(g, ff_asf_codec_comment_header);
106 else PRINT_IF_GUID(g, ff_asf_codec_comment1_header);
107 else PRINT_IF_GUID(g, ff_asf_data_header);
108 else PRINT_IF_GUID(g, ff_asf_simple_index_header);
109 else PRINT_IF_GUID(g, ff_asf_head1_guid);
110 else PRINT_IF_GUID(g, ff_asf_head2_guid);
111 else PRINT_IF_GUID(g, ff_asf_my_guid);
112 else PRINT_IF_GUID(g, ff_asf_ext_stream_header);
113 else PRINT_IF_GUID(g, ff_asf_extended_content_header);
114 else PRINT_IF_GUID(g, ff_asf_ext_stream_embed_stream_header);
115 else PRINT_IF_GUID(g, ff_asf_ext_stream_audio_stream);
116 else PRINT_IF_GUID(g, ff_asf_metadata_header);
117 else PRINT_IF_GUID(g, ff_asf_marker_header);
118 else PRINT_IF_GUID(g, stream_bitrate_guid);
119 else PRINT_IF_GUID(g, ff_asf_language_guid);
121 av_dlog(NULL, "(GUID: unknown) ");
123 av_dlog(NULL, " 0x%02x,", (*g)[i]);
124 av_dlog(NULL, "}\n");
128 #define print_guid(g)
131 static int asf_probe(AVProbeData *pd)
133 /* check file header */
134 if (!ff_guidcmp(pd->buf, &ff_asf_header))
135 return AVPROBE_SCORE_MAX;
140 static int get_value(AVIOContext *pb, int type){
142 case 2: return avio_rl32(pb);
143 case 3: return avio_rl32(pb);
144 case 4: return avio_rl64(pb);
145 case 5: return avio_rl16(pb);
146 default:return INT_MIN;
150 static void get_tag(AVFormatContext *s, const char *key, int type, int len)
153 int64_t off = avio_tell(s->pb);
155 if ((unsigned)len >= (UINT_MAX - 1)/2)
158 value = av_malloc(2*len+1);
162 if (type == 0) { // UTF16-LE
163 avio_get_str16le(s->pb, len, value, 2*len + 1);
164 } else if (type == -1) { // ASCII
165 avio_read(s->pb, value, len);
167 } else if (type > 1 && type <= 5) { // boolean or DWORD or QWORD or WORD
168 uint64_t num = get_value(s->pb, type);
169 snprintf(value, len, "%"PRIu64, num);
171 av_log(s, AV_LOG_DEBUG, "Unsupported value type %d in tag %s.\n", type, key);
175 av_dict_set(&s->metadata, key, value, 0);
178 avio_seek(s->pb, off + len, SEEK_SET);
181 static int asf_read_file_properties(AVFormatContext *s, int64_t size)
183 ASFContext *asf = s->priv_data;
184 AVIOContext *pb = s->pb;
186 ff_get_guid(pb, &asf->hdr.guid);
187 asf->hdr.file_size = avio_rl64(pb);
188 asf->hdr.create_time = avio_rl64(pb);
189 avio_rl64(pb); /* number of packets */
190 asf->hdr.play_time = avio_rl64(pb);
191 asf->hdr.send_time = avio_rl64(pb);
192 asf->hdr.preroll = avio_rl32(pb);
193 asf->hdr.ignore = avio_rl32(pb);
194 asf->hdr.flags = avio_rl32(pb);
195 asf->hdr.min_pktsize = avio_rl32(pb);
196 asf->hdr.max_pktsize = avio_rl32(pb);
197 if (asf->hdr.min_pktsize >= (1U<<29))
198 return AVERROR_INVALIDDATA;
199 asf->hdr.max_bitrate = avio_rl32(pb);
200 s->packet_size = asf->hdr.max_pktsize;
205 static int asf_read_stream_properties(AVFormatContext *s, int64_t size)
207 ASFContext *asf = s->priv_data;
208 AVIOContext *pb = s->pb;
212 enum AVMediaType type;
213 int type_specific_size, sizeX;
215 int64_t pos1, pos2, start_time;
216 int test_for_ext_stream_audio, is_dvr_ms_audio=0;
218 if (s->nb_streams == ASF_MAX_STREAMS) {
219 av_log(s, AV_LOG_ERROR, "too many streams\n");
220 return AVERROR(EINVAL);
223 pos1 = avio_tell(pb);
225 st = avformat_new_stream(s, NULL);
227 return AVERROR(ENOMEM);
228 avpriv_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
229 asf_st = av_mallocz(sizeof(ASFStream));
231 return AVERROR(ENOMEM);
232 st->priv_data = asf_st;
233 start_time = asf->hdr.preroll;
235 asf_st->stream_language_index = 128; // invalid stream index means no language info
237 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
238 st->duration = asf->hdr.play_time /
239 (10000000 / 1000) - start_time;
243 test_for_ext_stream_audio = 0;
244 if (!ff_guidcmp(&g, &ff_asf_audio_stream)) {
245 type = AVMEDIA_TYPE_AUDIO;
246 } else if (!ff_guidcmp(&g, &ff_asf_video_stream)) {
247 type = AVMEDIA_TYPE_VIDEO;
248 } else if (!ff_guidcmp(&g, &ff_asf_jfif_media)) {
249 type = AVMEDIA_TYPE_VIDEO;
250 st->codec->codec_id = CODEC_ID_MJPEG;
251 } else if (!ff_guidcmp(&g, &ff_asf_command_stream)) {
252 type = AVMEDIA_TYPE_DATA;
253 } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_embed_stream_header)) {
254 test_for_ext_stream_audio = 1;
255 type = AVMEDIA_TYPE_UNKNOWN;
260 avio_skip(pb, 8); /* total_size */
261 type_specific_size = avio_rl32(pb);
263 st->id = avio_rl16(pb) & 0x7f; /* stream id */
264 // mapping of asf ID to AV stream ID;
265 asf->asfid2avid[st->id] = s->nb_streams - 1;
269 if (test_for_ext_stream_audio) {
271 if (!ff_guidcmp(&g, &ff_asf_ext_stream_audio_stream)) {
272 type = AVMEDIA_TYPE_AUDIO;
283 st->codec->codec_type = type;
284 if (type == AVMEDIA_TYPE_AUDIO) {
285 int ret = ff_get_wav_header(pb, st->codec, type_specific_size);
288 if (is_dvr_ms_audio) {
289 // codec_id and codec_tag are unreliable in dvr_ms
290 // files. Set them later by probing stream.
291 st->request_probe= 1;
292 st->codec->codec_tag = 0;
294 if (st->codec->codec_id == CODEC_ID_AAC) {
295 st->need_parsing = AVSTREAM_PARSE_NONE;
297 st->need_parsing = AVSTREAM_PARSE_FULL;
299 /* We have to init the frame size at some point .... */
300 pos2 = avio_tell(pb);
301 if (size >= (pos2 + 8 - pos1 + 24)) {
302 asf_st->ds_span = avio_r8(pb);
303 asf_st->ds_packet_size = avio_rl16(pb);
304 asf_st->ds_chunk_size = avio_rl16(pb);
305 avio_rl16(pb); //ds_data_size
306 avio_r8(pb); //ds_silence_data
308 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
309 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
310 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
311 if (asf_st->ds_span > 1) {
312 if (!asf_st->ds_chunk_size
313 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
314 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
315 asf_st->ds_span = 0; // disable descrambling
317 } else if (type == AVMEDIA_TYPE_VIDEO &&
318 size - (avio_tell(pb) - pos1 + 24) >= 51) {
322 avio_rl16(pb); /* size */
323 sizeX= avio_rl32(pb); /* size */
324 st->codec->width = avio_rl32(pb);
325 st->codec->height = avio_rl32(pb);
326 /* not available for asf */
327 avio_rl16(pb); /* panes */
328 st->codec->bits_per_coded_sample = avio_rl16(pb); /* depth */
329 tag1 = avio_rl32(pb);
331 // av_log(s, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
333 st->codec->extradata_size = sizeX - 40;
334 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
335 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
338 /* Extract palette from extradata if bpp <= 8 */
339 /* This code assumes that extradata contains only palette */
340 /* This is true for all paletted codecs implemented in libavcodec */
341 if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
344 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
345 asf_st->palette[i] = av_bswap32(((uint32_t*)st->codec->extradata)[i]);
347 memcpy(asf_st->palette, st->codec->extradata,
348 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
350 asf_st->palette_changed = 1;
353 st->codec->codec_tag = tag1;
354 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag1);
355 if(tag1 == MKTAG('D', 'V', 'R', ' ')){
356 st->need_parsing = AVSTREAM_PARSE_FULL;
357 // 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
359 st->codec->height = 0;
360 av_freep(&st->codec->extradata);
361 st->codec->extradata_size=0;
363 if(st->codec->codec_id == CODEC_ID_H264)
364 st->need_parsing = AVSTREAM_PARSE_FULL_ONCE;
366 pos2 = avio_tell(pb);
367 avio_skip(pb, size - (pos2 - pos1 + 24));
372 static int asf_read_ext_stream_properties(AVFormatContext *s, int64_t size)
374 ASFContext *asf = s->priv_data;
375 AVIOContext *pb = s->pb;
377 int ext_len, payload_ext_ct, stream_ct, i;
378 uint32_t leak_rate, stream_num;
379 unsigned int stream_languageid_index;
381 avio_rl64(pb); // starttime
382 avio_rl64(pb); // endtime
383 leak_rate = avio_rl32(pb); // leak-datarate
384 avio_rl32(pb); // bucket-datasize
385 avio_rl32(pb); // init-bucket-fullness
386 avio_rl32(pb); // alt-leak-datarate
387 avio_rl32(pb); // alt-bucket-datasize
388 avio_rl32(pb); // alt-init-bucket-fullness
389 avio_rl32(pb); // max-object-size
390 avio_rl32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
391 stream_num = avio_rl16(pb); // stream-num
393 stream_languageid_index = avio_rl16(pb); // stream-language-id-index
394 if (stream_num < 128)
395 asf->streams[stream_num].stream_language_index = stream_languageid_index;
397 avio_rl64(pb); // avg frametime in 100ns units
398 stream_ct = avio_rl16(pb); //stream-name-count
399 payload_ext_ct = avio_rl16(pb); //payload-extension-system-count
401 if (stream_num < 128)
402 asf->stream_bitrates[stream_num] = leak_rate;
404 for (i=0; i<stream_ct; i++){
406 ext_len = avio_rl16(pb);
407 avio_skip(pb, ext_len);
410 for (i=0; i<payload_ext_ct; i++){
413 ext_len=avio_rl32(pb);
414 avio_skip(pb, ext_len);
420 static int asf_read_content_desc(AVFormatContext *s, int64_t size)
422 AVIOContext *pb = s->pb;
423 int len1, len2, len3, len4, len5;
425 len1 = avio_rl16(pb);
426 len2 = avio_rl16(pb);
427 len3 = avio_rl16(pb);
428 len4 = avio_rl16(pb);
429 len5 = avio_rl16(pb);
430 get_tag(s, "title" , 0, len1);
431 get_tag(s, "author" , 0, len2);
432 get_tag(s, "copyright", 0, len3);
433 get_tag(s, "comment" , 0, len4);
439 static int asf_read_ext_content_desc(AVFormatContext *s, int64_t size)
441 AVIOContext *pb = s->pb;
442 ASFContext *asf = s->priv_data;
443 int desc_count, i, ret;
445 desc_count = avio_rl16(pb);
446 for(i=0;i<desc_count;i++) {
447 int name_len,value_type,value_len;
450 name_len = avio_rl16(pb);
451 if (name_len%2) // must be even, broken lavf versions wrote len-1
453 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
454 avio_skip(pb, name_len - ret);
455 value_type = avio_rl16(pb);
456 value_len = avio_rl16(pb);
457 if (!value_type && value_len%2)
460 * My sample has that stream set to 0 maybe that mean the container.
461 * Asf stream count start at 1. I am using 0 to the container value since it's unused
463 if (!strcmp(name, "AspectRatioX")){
464 asf->dar[0].num= get_value(s->pb, value_type);
465 } else if(!strcmp(name, "AspectRatioY")){
466 asf->dar[0].den= get_value(s->pb, value_type);
468 get_tag(s, name, value_type, value_len);
474 static int asf_read_language_list(AVFormatContext *s, int64_t size)
476 AVIOContext *pb = s->pb;
477 ASFContext *asf = s->priv_data;
479 int stream_count = avio_rl16(pb);
480 for(j = 0; j < stream_count; j++) {
482 unsigned int lang_len = avio_r8(pb);
483 if ((ret = avio_get_str16le(pb, lang_len, lang, sizeof(lang))) < lang_len)
484 avio_skip(pb, lang_len - ret);
486 av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
492 static int asf_read_metadata(AVFormatContext *s, int64_t size)
494 AVIOContext *pb = s->pb;
495 ASFContext *asf = s->priv_data;
496 int n, stream_num, name_len, value_len, value_num;
503 avio_rl16(pb); //lang_list_index
504 stream_num= avio_rl16(pb);
505 name_len= avio_rl16(pb);
506 avio_skip(pb, 2); /* value_type */
507 value_len= avio_rl32(pb);
509 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
510 avio_skip(pb, name_len - ret);
511 //av_log(s, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
512 value_num= avio_rl16(pb);//we should use get_value() here but it does not work 2 is le16 here but le32 elsewhere
513 avio_skip(pb, value_len - 2);
516 if (!strcmp(name, "AspectRatioX")) asf->dar[stream_num].num= value_num;
517 else if(!strcmp(name, "AspectRatioY")) asf->dar[stream_num].den= value_num;
524 static int asf_read_marker(AVFormatContext *s, int64_t size)
526 AVIOContext *pb = s->pb;
527 int i, count, name_len, ret;
530 avio_rl64(pb); // reserved 16 bytes
531 avio_rl64(pb); // ...
532 count = avio_rl32(pb); // markers count
533 avio_rl16(pb); // reserved 2 bytes
534 name_len = avio_rl16(pb); // name length
535 for(i=0;i<name_len;i++){
536 avio_r8(pb); // skip the name
539 for(i=0;i<count;i++){
543 avio_rl64(pb); // offset, 8 bytes
544 pres_time = avio_rl64(pb); // presentation time
545 avio_rl16(pb); // entry length
546 avio_rl32(pb); // send time
547 avio_rl32(pb); // flags
548 name_len = avio_rl32(pb); // name length
549 if ((ret = avio_get_str16le(pb, name_len * 2, name, sizeof(name))) < name_len)
550 avio_skip(pb, name_len - ret);
551 avpriv_new_chapter(s, i, (AVRational){1, 10000000}, pres_time, AV_NOPTS_VALUE, name );
557 static int asf_read_header(AVFormatContext *s)
559 ASFContext *asf = s->priv_data;
561 AVIOContext *pb = s->pb;
566 if (ff_guidcmp(&g, &ff_asf_header))
572 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
574 uint64_t gpos= avio_tell(pb);
576 gsize = avio_rl64(pb);
577 av_dlog(s, "%08"PRIx64": ", gpos);
579 av_dlog(s, " size=0x%"PRIx64"\n", gsize);
580 if (!ff_guidcmp(&g, &ff_asf_data_header)) {
581 asf->data_object_offset = avio_tell(pb);
582 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
583 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
584 asf->data_object_size = gsize - 24;
586 asf->data_object_size = (uint64_t)-1;
592 if (!ff_guidcmp(&g, &ff_asf_file_header)) {
593 int ret = asf_read_file_properties(s, gsize);
596 } else if (!ff_guidcmp(&g, &ff_asf_stream_header)) {
597 asf_read_stream_properties(s, gsize);
598 } else if (!ff_guidcmp(&g, &ff_asf_comment_header)) {
599 asf_read_content_desc(s, gsize);
600 } else if (!ff_guidcmp(&g, &ff_asf_language_guid)) {
601 asf_read_language_list(s, gsize);
602 } else if (!ff_guidcmp(&g, &ff_asf_extended_content_header)) {
603 asf_read_ext_content_desc(s, gsize);
604 } else if (!ff_guidcmp(&g, &ff_asf_metadata_header)) {
605 asf_read_metadata(s, gsize);
606 } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_header)) {
607 asf_read_ext_stream_properties(s, gsize);
609 // there could be a optional stream properties object to follow
610 // if so the next iteration will pick it up
612 } else if (!ff_guidcmp(&g, &ff_asf_head1_guid)) {
616 } else if (!ff_guidcmp(&g, &ff_asf_marker_header)) {
617 asf_read_marker(s, gsize);
618 } else if (url_feof(pb)) {
622 if (!ff_guidcmp(&g, &ff_asf_content_encryption)) {
625 av_log(s, AV_LOG_WARNING, "DRM protected stream detected, decoding will likely fail!\n");
627 av_log(s, AV_LOG_DEBUG, "Secret data:\n");
628 av_get_packet(pb, &pkt, len); av_hex_dump_log(s, AV_LOG_DEBUG, pkt.data, pkt.size); av_free_packet(&pkt);
630 get_tag(s, "ASF_Protection_Type", -1, len);
632 get_tag(s, "ASF_Key_ID", -1, len);
634 get_tag(s, "ASF_License_URL", -1, len);
635 } else if (!ff_guidcmp(&g, &ff_asf_ext_content_encryption)) {
636 av_log(s, AV_LOG_WARNING, "Ext DRM protected stream detected, decoding will likely fail!\n");
637 av_dict_set(&s->metadata, "encryption", "ASF Extended Content Encryption", 0);
638 } else if (!ff_guidcmp(&g, &ff_asf_digital_signature)) {
639 av_log(s, AV_LOG_INFO, "Digital signature detected!\n");
643 if(avio_tell(pb) != gpos + gsize)
644 av_log(s, AV_LOG_DEBUG, "gpos mismatch our pos=%"PRIu64", end=%"PRIu64"\n", avio_tell(pb)-gpos, gsize);
645 avio_seek(pb, gpos + gsize, SEEK_SET);
653 asf->data_offset = avio_tell(pb);
654 asf->packet_size_left = 0;
657 for(i=0; i<128; i++){
658 int stream_num= asf->asfid2avid[i];
660 AVStream *st = s->streams[stream_num];
661 if (!st->codec->bit_rate)
662 st->codec->bit_rate = asf->stream_bitrates[i];
663 if (asf->dar[i].num > 0 && asf->dar[i].den > 0){
664 av_reduce(&st->sample_aspect_ratio.num,
665 &st->sample_aspect_ratio.den,
666 asf->dar[i].num, asf->dar[i].den, INT_MAX);
667 } 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.
668 av_reduce(&st->sample_aspect_ratio.num,
669 &st->sample_aspect_ratio.den,
670 asf->dar[0].num, asf->dar[0].den, INT_MAX);
672 //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);
674 // copy and convert language codes to the frontend
675 if (asf->streams[i].stream_language_index < 128) {
676 const char *rfc1766 = asf->stream_languages[asf->streams[i].stream_language_index];
677 if (rfc1766 && strlen(rfc1766) > 1) {
678 const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
679 const char *iso6392 = av_convert_lang_to(primary_tag, AV_LANG_ISO639_2_BIBL);
681 av_dict_set(&st->metadata, "language", iso6392, 0);
687 ff_metadata_conv(&s->metadata, NULL, ff_asf_metadata_conv);
692 #define DO_2BITS(bits, var, defval) \
695 case 3: var = avio_rl32(pb); rsize += 4; break; \
696 case 2: var = avio_rl16(pb); rsize += 2; break; \
697 case 1: var = avio_r8(pb); rsize++; break; \
698 default: var = defval; break; \
702 * Load a single ASF packet into the demuxer.
703 * @param s demux context
704 * @param pb context to read data from
705 * @return 0 on success, <0 on error
707 static int ff_asf_get_packet(AVFormatContext *s, AVIOContext *pb)
709 ASFContext *asf = s->priv_data;
710 uint32_t packet_length, padsize;
714 // if we do not know packet size, allow skipping up to 32 kB
716 if (s->packet_size > 0)
717 off= (avio_tell(pb) - s->data_offset) % s->packet_size + 3;
723 if(c == 0x82 && !d && !e)
729 * This code allows handling of -EAGAIN at packet boundaries (i.e.
730 * if the packet sync code above triggers -EAGAIN). This does not
731 * imply complete -EAGAIN handling support at random positions in
734 if (pb->error == AVERROR(EAGAIN))
735 return AVERROR(EAGAIN);
737 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, avio_tell(pb));
739 if ((c & 0x8f) == 0x82) {
742 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
748 }else if(!url_feof(pb)){
749 avio_seek(pb, -1, SEEK_CUR); //FIXME
752 asf->packet_flags = c;
753 asf->packet_property = d;
755 DO_2BITS(asf->packet_flags >> 5, packet_length, s->packet_size);
756 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
757 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
759 //the following checks prevent overflows and infinite loops
760 if(!packet_length || packet_length >= (1U<<29)){
761 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, avio_tell(pb));
764 if(padsize >= packet_length){
765 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, avio_tell(pb));
769 asf->packet_timestamp = avio_rl32(pb);
770 avio_rl16(pb); /* duration */
771 // rsize has at least 11 bytes which have to be present
773 if (asf->packet_flags & 0x01) {
774 asf->packet_segsizetype = avio_r8(pb); rsize++;
775 asf->packet_segments = asf->packet_segsizetype & 0x3f;
777 asf->packet_segments = 1;
778 asf->packet_segsizetype = 0x80;
780 if (rsize > packet_length - padsize) {
781 asf->packet_size_left = 0;
782 av_log(s, AV_LOG_ERROR,
783 "invalid packet header length %d for pktlen %d-%d at %"PRId64"\n",
784 rsize, packet_length, padsize, avio_tell(pb));
787 asf->packet_size_left = packet_length - padsize - rsize;
788 if (packet_length < asf->hdr.min_pktsize)
789 padsize += asf->hdr.min_pktsize - packet_length;
790 asf->packet_padsize = padsize;
791 av_dlog(s, "packet: size=%d padsize=%d left=%d\n", s->packet_size, asf->packet_padsize, asf->packet_size_left);
797 * @return <0 if error
799 static int asf_read_frame_header(AVFormatContext *s, AVIOContext *pb){
800 ASFContext *asf = s->priv_data;
802 int num = avio_r8(pb);
803 int64_t ts0, ts1 av_unused;
805 asf->packet_segments--;
806 asf->packet_key_frame = num >> 7;
807 asf->stream_index = asf->asfid2avid[num & 0x7f];
808 // sequence should be ignored!
809 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
810 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
811 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
812 //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);
813 if (rsize+asf->packet_replic_size > asf->packet_size_left) {
814 av_log(s, AV_LOG_ERROR, "packet_replic_size %d is invalid\n", asf->packet_replic_size);
817 if (asf->packet_replic_size >= 8) {
818 asf->packet_obj_size = avio_rl32(pb);
819 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
820 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
823 asf->packet_frag_timestamp = avio_rl32(pb); // timestamp
824 if(asf->packet_replic_size >= 8+38+4){
825 // for(i=0; i<asf->packet_replic_size-8; i++)
826 // av_log(s, AV_LOG_DEBUG, "%02X ",avio_r8(pb));
827 // av_log(s, AV_LOG_DEBUG, "\n");
833 avio_skip(pb, asf->packet_replic_size - 8 - 38 - 4);
834 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
835 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
837 avio_skip(pb, asf->packet_replic_size - 8);
838 rsize += asf->packet_replic_size; // FIXME - check validity
839 } else if (asf->packet_replic_size==1){
840 // multipacket - frag_offset is beginning timestamp
841 asf->packet_time_start = asf->packet_frag_offset;
842 asf->packet_frag_offset = 0;
843 asf->packet_frag_timestamp = asf->packet_timestamp;
845 asf->packet_time_delta = avio_r8(pb);
847 }else if(asf->packet_replic_size!=0){
848 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
851 if (asf->packet_flags & 0x01) {
852 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
853 if (rsize > asf->packet_size_left) {
854 av_log(s, AV_LOG_ERROR, "packet_replic_size is invalid\n");
856 } else if(asf->packet_frag_size > asf->packet_size_left - rsize){
857 if (asf->packet_frag_size > asf->packet_size_left - rsize + asf->packet_padsize) {
858 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid (%d-%d)\n", asf->packet_size_left, rsize);
861 int diff = asf->packet_frag_size - (asf->packet_size_left - rsize);
862 asf->packet_size_left += diff;
863 asf->packet_padsize -= diff;
866 //printf("Fragsize %d\n", asf->packet_frag_size);
868 asf->packet_frag_size = asf->packet_size_left - rsize;
869 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
871 if (asf->packet_replic_size == 1) {
872 asf->packet_multi_size = asf->packet_frag_size;
873 if (asf->packet_multi_size > asf->packet_size_left)
876 asf->packet_size_left -= rsize;
877 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
883 * Parse data from individual ASF packets (which were previously loaded
884 * with asf_get_packet()).
885 * @param s demux context
886 * @param pb context to read data from
887 * @param pkt pointer to store packet data into
888 * @return 0 if data was stored in pkt, <0 on error or 1 if more ASF
889 * packets need to be loaded (through asf_get_packet())
891 static int ff_asf_parse_packet(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
893 ASFContext *asf = s->priv_data;
894 ASFStream *asf_st = 0;
899 if (asf->packet_size_left < FRAME_HEADER_SIZE
900 || asf->packet_segments < 1) {
901 //asf->packet_size_left <= asf->packet_padsize) {
902 int ret = asf->packet_size_left + asf->packet_padsize;
903 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, avio_tell(pb));
908 asf->packet_pos= avio_tell(pb);
909 if (asf->data_object_size != (uint64_t)-1 &&
910 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
911 return AVERROR_EOF; /* Do not exceed the size of the data object */
914 if (asf->packet_time_start == 0) {
915 if(asf_read_frame_header(s, pb) < 0){
916 asf->packet_segments= 0;
919 if (asf->stream_index < 0
920 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
921 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
923 asf->packet_time_start = 0;
924 /* unhandled packet (should not happen) */
925 avio_skip(pb, asf->packet_frag_size);
926 asf->packet_size_left -= asf->packet_frag_size;
927 if(asf->stream_index < 0)
928 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
931 asf->asf_st = s->streams[asf->stream_index]->priv_data;
933 asf_st = asf->asf_st;
935 if (asf->packet_replic_size == 1) {
936 // frag_offset is here used as the beginning timestamp
937 asf->packet_frag_timestamp = asf->packet_time_start;
938 asf->packet_time_start += asf->packet_time_delta;
939 asf->packet_obj_size = asf->packet_frag_size = avio_r8(pb);
940 asf->packet_size_left--;
941 asf->packet_multi_size--;
942 if (asf->packet_multi_size < asf->packet_obj_size)
944 asf->packet_time_start = 0;
945 avio_skip(pb, asf->packet_multi_size);
946 asf->packet_size_left -= asf->packet_multi_size;
949 asf->packet_multi_size -= asf->packet_obj_size;
950 //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);
952 if( /*asf->packet_frag_size == asf->packet_obj_size*/
953 asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
954 && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
955 av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
956 asf_st->frag_offset, asf->packet_frag_size,
957 asf->packet_obj_size, asf_st->pkt.size);
958 asf->packet_obj_size= asf_st->pkt.size;
961 if ( asf_st->pkt.size != asf->packet_obj_size
962 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
963 if(asf_st->pkt.data){
964 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
965 asf_st->frag_offset = 0;
966 av_free_packet(&asf_st->pkt);
969 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
970 asf_st->seq = asf->packet_seq;
971 asf_st->pkt.dts = asf->packet_frag_timestamp - asf->hdr.preroll;
972 asf_st->pkt.stream_index = asf->stream_index;
974 asf_st->packet_pos= asf->packet_pos;
975 if (asf_st->pkt.data && asf_st->palette_changed) {
977 pal = av_packet_new_side_data(&asf_st->pkt, AV_PKT_DATA_PALETTE,
980 av_log(s, AV_LOG_ERROR, "Cannot append palette to packet\n");
982 memcpy(pal, asf_st->palette, AVPALETTE_SIZE);
983 asf_st->palette_changed = 0;
986 //printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
987 //asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & AV_PKT_FLAG_KEY,
988 //s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO, asf->packet_obj_size);
989 if (s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO)
990 asf->packet_key_frame = 1;
991 if (asf->packet_key_frame)
992 asf_st->pkt.flags |= AV_PKT_FLAG_KEY;
996 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
997 // s->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
998 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
999 asf->packet_size_left -= asf->packet_frag_size;
1000 if (asf->packet_size_left < 0)
1003 if( asf->packet_frag_offset >= asf_st->pkt.size
1004 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
1005 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
1006 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
1010 ret = avio_read(pb, asf_st->pkt.data + asf->packet_frag_offset,
1011 asf->packet_frag_size);
1012 if (ret != asf->packet_frag_size) {
1013 if (ret < 0 || asf->packet_frag_offset + ret == 0)
1014 return ret < 0 ? ret : AVERROR_EOF;
1015 if (asf_st->ds_span > 1) {
1016 // scrambling, we can either drop it completely or fill the remainder
1017 // TODO: should we fill the whole packet instead of just the current
1019 memset(asf_st->pkt.data + asf->packet_frag_offset + ret, 0,
1020 asf->packet_frag_size - ret);
1021 ret = asf->packet_frag_size;
1023 // no scrambling, so we can return partial packets
1024 av_shrink_packet(&asf_st->pkt, asf->packet_frag_offset + ret);
1026 if (s->key && s->keylen == 20)
1027 ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
1029 asf_st->frag_offset += ret;
1030 /* test if whole packet is read */
1031 if (asf_st->frag_offset == asf_st->pkt.size) {
1032 //workaround for macroshit radio DVR-MS files
1033 if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
1034 && asf_st->pkt.size > 100){
1036 for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
1037 if(i == asf_st->pkt.size){
1038 av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
1039 asf_st->frag_offset = 0;
1040 av_free_packet(&asf_st->pkt);
1046 if (asf_st->ds_span > 1) {
1047 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
1048 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);
1050 /* packet descrambling */
1051 uint8_t *newdata = av_malloc(asf_st->pkt.size + FF_INPUT_BUFFER_PADDING_SIZE);
1054 memset(newdata + asf_st->pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1055 while (offset < asf_st->pkt.size) {
1056 int off = offset / asf_st->ds_chunk_size;
1057 int row = off / asf_st->ds_span;
1058 int col = off % asf_st->ds_span;
1059 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
1060 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
1062 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
1063 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
1064 memcpy(newdata + offset,
1065 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
1066 asf_st->ds_chunk_size);
1067 offset += asf_st->ds_chunk_size;
1069 av_free(asf_st->pkt.data);
1070 asf_st->pkt.data = newdata;
1074 asf_st->frag_offset = 0;
1076 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
1077 asf_st->pkt.size = 0;
1078 asf_st->pkt.data = 0;
1079 asf_st->pkt.side_data_elems = 0;
1080 asf_st->pkt.side_data = NULL;
1081 break; // packet completed
1087 static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
1089 ASFContext *asf = s->priv_data;
1094 /* parse cached packets, if any */
1095 if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0)
1097 if ((ret = ff_asf_get_packet(s, s->pb)) < 0)
1098 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
1099 asf->packet_time_start = 0;
1103 // Added to support seeking after packets have been read
1104 // If information is not reset, read_packet fails due to
1105 // leftover information from previous reads
1106 static void asf_reset_header(AVFormatContext *s)
1108 ASFContext *asf = s->priv_data;
1112 asf->packet_size_left = 0;
1113 asf->packet_segments = 0;
1114 asf->packet_flags = 0;
1115 asf->packet_property = 0;
1116 asf->packet_timestamp = 0;
1117 asf->packet_segsizetype = 0;
1118 asf->packet_segments = 0;
1119 asf->packet_seq = 0;
1120 asf->packet_replic_size = 0;
1121 asf->packet_key_frame = 0;
1122 asf->packet_padsize = 0;
1123 asf->packet_frag_offset = 0;
1124 asf->packet_frag_size = 0;
1125 asf->packet_frag_timestamp = 0;
1126 asf->packet_multi_size = 0;
1127 asf->packet_obj_size = 0;
1128 asf->packet_time_delta = 0;
1129 asf->packet_time_start = 0;
1131 for(i=0; i<s->nb_streams; i++){
1132 asf_st= s->streams[i]->priv_data;
1133 av_free_packet(&asf_st->pkt);
1134 asf_st->frag_offset=0;
1140 static int asf_read_close(AVFormatContext *s)
1142 asf_reset_header(s);
1147 static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
1149 AVPacket pkt1, *pkt = &pkt1;
1154 int64_t start_pos[ASF_MAX_STREAMS];
1156 for(i=0; i<s->nb_streams; i++){
1160 if (s->packet_size > 0)
1161 pos= (pos+s->packet_size-1-s->data_offset)/s->packet_size*s->packet_size+ s->data_offset;
1163 if (avio_seek(s->pb, pos, SEEK_SET) < 0)
1164 return AV_NOPTS_VALUE;
1166 //printf("asf_read_pts\n");
1167 asf_reset_header(s);
1169 if (av_read_frame(s, pkt) < 0){
1170 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
1171 return AV_NOPTS_VALUE;
1176 av_free_packet(pkt);
1177 if(pkt->flags&AV_PKT_FLAG_KEY){
1178 i= pkt->stream_index;
1180 asf_st= s->streams[i]->priv_data;
1182 // assert((asf_st->packet_pos - s->data_offset) % s->packet_size == 0);
1183 pos= asf_st->packet_pos;
1185 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
1186 start_pos[i]= asf_st->packet_pos + 1;
1188 if(pkt->stream_index == stream_index)
1194 //printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
1199 static void asf_build_simple_index(AVFormatContext *s, int stream_index)
1202 ASFContext *asf = s->priv_data;
1203 int64_t current_pos= avio_tell(s->pb);
1205 if(avio_seek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET) < 0) {
1206 asf->index_read= -1;
1210 ff_get_guid(s->pb, &g);
1212 /* the data object can be followed by other top-level objects,
1213 skip them until the simple index object is reached */
1214 while (ff_guidcmp(&g, &ff_asf_simple_index_header)) {
1215 int64_t gsize= avio_rl64(s->pb);
1216 if (gsize < 24 || url_feof(s->pb)) {
1217 avio_seek(s->pb, current_pos, SEEK_SET);
1218 asf->index_read= -1;
1221 avio_skip(s->pb, gsize-24);
1222 ff_get_guid(s->pb, &g);
1226 int64_t itime, last_pos=-1;
1229 int64_t av_unused gsize= avio_rl64(s->pb);
1230 ff_get_guid(s->pb, &g);
1231 itime=avio_rl64(s->pb);
1232 pct=avio_rl32(s->pb);
1233 ict=avio_rl32(s->pb);
1234 av_log(s, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
1236 for (i=0;i<ict;i++){
1237 int pktnum=avio_rl32(s->pb);
1238 int pktct =avio_rl16(s->pb);
1239 int64_t pos = s->data_offset + s->packet_size*(int64_t)pktnum;
1240 int64_t index_pts= FFMAX(av_rescale(itime, i, 10000) - asf->hdr.preroll, 0);
1242 if(pos != last_pos){
1243 av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d pts: %"PRId64"\n", pktnum, pktct, index_pts);
1244 av_add_index_entry(s->streams[stream_index], pos, index_pts, s->packet_size, 0, AVINDEX_KEYFRAME);
1248 asf->index_read= ict > 0;
1250 avio_seek(s->pb, current_pos, SEEK_SET);
1253 static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
1255 ASFContext *asf = s->priv_data;
1256 AVStream *st = s->streams[stream_index];
1258 if (s->packet_size <= 0)
1261 /* Try using the protocol's read_seek if available */
1263 int ret = avio_seek_time(s->pb, stream_index, pts, flags);
1265 asf_reset_header(s);
1266 if (ret != AVERROR(ENOSYS))
1270 if (!asf->index_read)
1271 asf_build_simple_index(s, stream_index);
1273 if((asf->index_read > 0 && st->index_entries)){
1274 int index= av_index_search_timestamp(st, pts, flags);
1276 /* find the position */
1277 uint64_t pos = st->index_entries[index].pos;
1280 av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
1281 if(avio_seek(s->pb, pos, SEEK_SET) < 0)
1283 asf_reset_header(s);
1287 /* no index or seeking by index failed */
1288 if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1290 asf_reset_header(s);
1294 AVInputFormat ff_asf_demuxer = {
1296 .long_name = NULL_IF_CONFIG_SMALL("ASF format"),
1297 .priv_data_size = sizeof(ASFContext),
1298 .read_probe = asf_probe,
1299 .read_header = asf_read_header,
1300 .read_packet = asf_read_packet,
1301 .read_close = asf_read_close,
1302 .read_seek = asf_read_seek,
1303 .read_timestamp = asf_read_pts,
1304 .flags = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH,