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 "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 void ff_get_guid(AVIOContext *s, ff_asf_guid *g)
138 assert(sizeof(*g) == 16);
139 avio_read(s, *g, sizeof(*g));
142 static int asf_probe(AVProbeData *pd)
144 /* check file header */
145 if (!ff_guidcmp(pd->buf, &ff_asf_header))
146 return AVPROBE_SCORE_MAX;
151 static int get_value(AVIOContext *pb, int type){
153 case 2: return avio_rl32(pb);
154 case 3: return avio_rl32(pb);
155 case 4: return avio_rl64(pb);
156 case 5: return avio_rl16(pb);
157 default:return INT_MIN;
161 static void get_tag(AVFormatContext *s, const char *key, int type, int len)
164 int64_t off = avio_tell(s->pb);
166 if ((unsigned)len >= (UINT_MAX - 1)/2)
169 value = av_malloc(2*len+1);
173 if (type == 0) { // UTF16-LE
174 avio_get_str16le(s->pb, len, value, 2*len + 1);
175 } else if (type > 1 && type <= 5) { // boolean or DWORD or QWORD or WORD
176 uint64_t num = get_value(s->pb, type);
177 snprintf(value, len, "%"PRIu64, num);
179 av_log(s, AV_LOG_DEBUG, "Unsupported value type %d in tag %s.\n", type, key);
183 av_dict_set(&s->metadata, key, value, 0);
186 avio_seek(s->pb, off + len, SEEK_SET);
189 static int asf_read_file_properties(AVFormatContext *s, int64_t size)
191 ASFContext *asf = s->priv_data;
192 AVIOContext *pb = s->pb;
194 ff_get_guid(pb, &asf->hdr.guid);
195 asf->hdr.file_size = avio_rl64(pb);
196 asf->hdr.create_time = avio_rl64(pb);
197 avio_rl64(pb); /* number of packets */
198 asf->hdr.play_time = avio_rl64(pb);
199 asf->hdr.send_time = avio_rl64(pb);
200 asf->hdr.preroll = avio_rl32(pb);
201 asf->hdr.ignore = avio_rl32(pb);
202 asf->hdr.flags = avio_rl32(pb);
203 asf->hdr.min_pktsize = avio_rl32(pb);
204 asf->hdr.max_pktsize = avio_rl32(pb);
205 if (asf->hdr.min_pktsize >= (1U<<29))
206 return AVERROR_INVALIDDATA;
207 asf->hdr.max_bitrate = avio_rl32(pb);
208 s->packet_size = asf->hdr.max_pktsize;
213 static int asf_read_stream_properties(AVFormatContext *s, int64_t size)
215 ASFContext *asf = s->priv_data;
216 AVIOContext *pb = s->pb;
220 enum AVMediaType type;
221 int type_specific_size, sizeX;
223 int64_t pos1, pos2, start_time;
224 int test_for_ext_stream_audio, is_dvr_ms_audio=0;
226 if (s->nb_streams == ASF_MAX_STREAMS) {
227 av_log(s, AV_LOG_ERROR, "too many streams\n");
228 return AVERROR(EINVAL);
231 pos1 = avio_tell(pb);
233 st = avformat_new_stream(s, NULL);
235 return AVERROR(ENOMEM);
236 avpriv_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
237 asf_st = av_mallocz(sizeof(ASFStream));
239 return AVERROR(ENOMEM);
240 st->priv_data = asf_st;
242 start_time = asf->hdr.preroll;
244 asf_st->stream_language_index = 128; // invalid stream index means no language info
246 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
247 st->duration = asf->hdr.play_time /
248 (10000000 / 1000) - start_time;
252 test_for_ext_stream_audio = 0;
253 if (!ff_guidcmp(&g, &ff_asf_audio_stream)) {
254 type = AVMEDIA_TYPE_AUDIO;
255 } else if (!ff_guidcmp(&g, &ff_asf_video_stream)) {
256 type = AVMEDIA_TYPE_VIDEO;
257 } else if (!ff_guidcmp(&g, &ff_asf_jfif_media)) {
258 type = AVMEDIA_TYPE_VIDEO;
259 st->codec->codec_id = CODEC_ID_MJPEG;
260 } else if (!ff_guidcmp(&g, &ff_asf_command_stream)) {
261 type = AVMEDIA_TYPE_DATA;
262 } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_embed_stream_header)) {
263 test_for_ext_stream_audio = 1;
264 type = AVMEDIA_TYPE_UNKNOWN;
269 avio_skip(pb, 8); /* total_size */
270 type_specific_size = avio_rl32(pb);
272 st->id = avio_rl16(pb) & 0x7f; /* stream id */
273 // mapping of asf ID to AV stream ID;
274 asf->asfid2avid[st->id] = s->nb_streams - 1;
278 if (test_for_ext_stream_audio) {
280 if (!ff_guidcmp(&g, &ff_asf_ext_stream_audio_stream)) {
281 type = AVMEDIA_TYPE_AUDIO;
292 st->codec->codec_type = type;
293 if (type == AVMEDIA_TYPE_AUDIO) {
294 int ret = ff_get_wav_header(pb, st->codec, type_specific_size);
297 if (is_dvr_ms_audio) {
298 // codec_id and codec_tag are unreliable in dvr_ms
299 // files. Set them later by probing stream.
300 st->codec->codec_id = CODEC_ID_PROBE;
301 st->codec->codec_tag = 0;
303 if (st->codec->codec_id == CODEC_ID_AAC) {
304 st->need_parsing = AVSTREAM_PARSE_NONE;
306 st->need_parsing = AVSTREAM_PARSE_FULL;
308 /* We have to init the frame size at some point .... */
309 pos2 = avio_tell(pb);
310 if (size >= (pos2 + 8 - pos1 + 24)) {
311 asf_st->ds_span = avio_r8(pb);
312 asf_st->ds_packet_size = avio_rl16(pb);
313 asf_st->ds_chunk_size = avio_rl16(pb);
314 avio_rl16(pb); //ds_data_size
315 avio_r8(pb); //ds_silence_data
317 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
318 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
319 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
320 if (asf_st->ds_span > 1) {
321 if (!asf_st->ds_chunk_size
322 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
323 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
324 asf_st->ds_span = 0; // disable descrambling
326 switch (st->codec->codec_id) {
328 st->codec->frame_size = MPA_FRAME_SIZE;
330 case CODEC_ID_PCM_S16LE:
331 case CODEC_ID_PCM_S16BE:
332 case CODEC_ID_PCM_U16LE:
333 case CODEC_ID_PCM_U16BE:
334 case CODEC_ID_PCM_S8:
335 case CODEC_ID_PCM_U8:
336 case CODEC_ID_PCM_ALAW:
337 case CODEC_ID_PCM_MULAW:
338 st->codec->frame_size = 1;
341 /* This is probably wrong, but it prevents a crash later */
342 st->codec->frame_size = 1;
345 } else if (type == AVMEDIA_TYPE_VIDEO &&
346 size - (avio_tell(pb) - pos1 + 24) >= 51) {
350 avio_rl16(pb); /* size */
351 sizeX= avio_rl32(pb); /* size */
352 st->codec->width = avio_rl32(pb);
353 st->codec->height = avio_rl32(pb);
354 /* not available for asf */
355 avio_rl16(pb); /* panes */
356 st->codec->bits_per_coded_sample = avio_rl16(pb); /* depth */
357 tag1 = avio_rl32(pb);
359 // av_log(s, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
361 st->codec->extradata_size = sizeX - 40;
362 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
363 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
366 /* Extract palette from extradata if bpp <= 8 */
367 /* This code assumes that extradata contains only palette */
368 /* This is true for all paletted codecs implemented in libavcodec */
369 if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
372 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
373 asf_st->palette[i] = av_bswap32(((uint32_t*)st->codec->extradata)[i]);
375 memcpy(asf_st->palette, st->codec->extradata,
376 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
378 asf_st->palette_changed = 1;
381 st->codec->codec_tag = tag1;
382 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag1);
383 if(tag1 == MKTAG('D', 'V', 'R', ' ')){
384 st->need_parsing = AVSTREAM_PARSE_FULL;
385 // 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
387 st->codec->height = 0;
388 av_freep(&st->codec->extradata);
389 st->codec->extradata_size=0;
391 if(st->codec->codec_id == CODEC_ID_H264)
392 st->need_parsing = AVSTREAM_PARSE_FULL_ONCE;
394 pos2 = avio_tell(pb);
395 avio_skip(pb, size - (pos2 - pos1 + 24));
400 static int asf_read_ext_stream_properties(AVFormatContext *s, int64_t size)
402 ASFContext *asf = s->priv_data;
403 AVIOContext *pb = s->pb;
405 int ext_len, payload_ext_ct, stream_ct, i;
406 uint32_t leak_rate, stream_num;
407 unsigned int stream_languageid_index;
409 avio_rl64(pb); // starttime
410 avio_rl64(pb); // endtime
411 leak_rate = avio_rl32(pb); // leak-datarate
412 avio_rl32(pb); // bucket-datasize
413 avio_rl32(pb); // init-bucket-fullness
414 avio_rl32(pb); // alt-leak-datarate
415 avio_rl32(pb); // alt-bucket-datasize
416 avio_rl32(pb); // alt-init-bucket-fullness
417 avio_rl32(pb); // max-object-size
418 avio_rl32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
419 stream_num = avio_rl16(pb); // stream-num
421 stream_languageid_index = avio_rl16(pb); // stream-language-id-index
422 if (stream_num < 128)
423 asf->streams[stream_num].stream_language_index = stream_languageid_index;
425 avio_rl64(pb); // avg frametime in 100ns units
426 stream_ct = avio_rl16(pb); //stream-name-count
427 payload_ext_ct = avio_rl16(pb); //payload-extension-system-count
429 if (stream_num < 128)
430 asf->stream_bitrates[stream_num] = leak_rate;
432 for (i=0; i<stream_ct; i++){
434 ext_len = avio_rl16(pb);
435 avio_skip(pb, ext_len);
438 for (i=0; i<payload_ext_ct; i++){
441 ext_len=avio_rl32(pb);
442 avio_skip(pb, ext_len);
448 static int asf_read_content_desc(AVFormatContext *s, int64_t size)
450 AVIOContext *pb = s->pb;
451 int len1, len2, len3, len4, len5;
453 len1 = avio_rl16(pb);
454 len2 = avio_rl16(pb);
455 len3 = avio_rl16(pb);
456 len4 = avio_rl16(pb);
457 len5 = avio_rl16(pb);
458 get_tag(s, "title" , 0, len1);
459 get_tag(s, "author" , 0, len2);
460 get_tag(s, "copyright", 0, len3);
461 get_tag(s, "comment" , 0, len4);
467 static int asf_read_ext_content_desc(AVFormatContext *s, int64_t size)
469 AVIOContext *pb = s->pb;
470 ASFContext *asf = s->priv_data;
471 int desc_count, i, ret;
473 desc_count = avio_rl16(pb);
474 for(i=0;i<desc_count;i++) {
475 int name_len,value_type,value_len;
478 name_len = avio_rl16(pb);
479 if (name_len%2) // must be even, broken lavf versions wrote len-1
481 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
482 avio_skip(pb, name_len - ret);
483 value_type = avio_rl16(pb);
484 value_len = avio_rl16(pb);
485 if (!value_type && value_len%2)
488 * My sample has that stream set to 0 maybe that mean the container.
489 * Asf stream count start at 1. I am using 0 to the container value since it's unused
491 if (!strcmp(name, "AspectRatioX")){
492 asf->dar[0].num= get_value(s->pb, value_type);
493 } else if(!strcmp(name, "AspectRatioY")){
494 asf->dar[0].den= get_value(s->pb, value_type);
496 get_tag(s, name, value_type, value_len);
502 static int asf_read_language_list(AVFormatContext *s, int64_t size)
504 AVIOContext *pb = s->pb;
505 ASFContext *asf = s->priv_data;
507 int stream_count = avio_rl16(pb);
508 for(j = 0; j < stream_count; j++) {
510 unsigned int lang_len = avio_r8(pb);
511 if ((ret = avio_get_str16le(pb, lang_len, lang, sizeof(lang))) < lang_len)
512 avio_skip(pb, lang_len - ret);
514 av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
520 static int asf_read_metadata(AVFormatContext *s, int64_t size)
522 AVIOContext *pb = s->pb;
523 ASFContext *asf = s->priv_data;
524 int n, stream_num, name_len, value_len, value_num;
531 avio_rl16(pb); //lang_list_index
532 stream_num= avio_rl16(pb);
533 name_len= avio_rl16(pb);
534 avio_skip(pb, 2); /* value_type */
535 value_len= avio_rl32(pb);
537 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
538 avio_skip(pb, name_len - ret);
539 //av_log(s, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
540 value_num= avio_rl16(pb);//we should use get_value() here but it does not work 2 is le16 here but le32 elsewhere
541 avio_skip(pb, value_len - 2);
544 if (!strcmp(name, "AspectRatioX")) asf->dar[stream_num].num= value_num;
545 else if(!strcmp(name, "AspectRatioY")) asf->dar[stream_num].den= value_num;
552 static int asf_read_marker(AVFormatContext *s, int64_t size)
554 AVIOContext *pb = s->pb;
555 int i, count, name_len, ret;
558 avio_rl64(pb); // reserved 16 bytes
559 avio_rl64(pb); // ...
560 count = avio_rl32(pb); // markers count
561 avio_rl16(pb); // reserved 2 bytes
562 name_len = avio_rl16(pb); // name length
563 for(i=0;i<name_len;i++){
564 avio_r8(pb); // skip the name
567 for(i=0;i<count;i++){
571 avio_rl64(pb); // offset, 8 bytes
572 pres_time = avio_rl64(pb); // presentation time
573 avio_rl16(pb); // entry length
574 avio_rl32(pb); // send time
575 avio_rl32(pb); // flags
576 name_len = avio_rl32(pb); // name length
577 if ((ret = avio_get_str16le(pb, name_len * 2, name, sizeof(name))) < name_len)
578 avio_skip(pb, name_len - ret);
579 avpriv_new_chapter(s, i, (AVRational){1, 10000000}, pres_time, AV_NOPTS_VALUE, name );
585 static int asf_read_header(AVFormatContext *s)
587 ASFContext *asf = s->priv_data;
589 AVIOContext *pb = s->pb;
594 if (ff_guidcmp(&g, &ff_asf_header))
600 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
602 uint64_t gpos= avio_tell(pb);
604 gsize = avio_rl64(pb);
605 av_dlog(s, "%08"PRIx64": ", gpos);
607 av_dlog(s, " size=0x%"PRIx64"\n", gsize);
608 if (!ff_guidcmp(&g, &ff_asf_data_header)) {
609 asf->data_object_offset = avio_tell(pb);
610 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
611 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
612 asf->data_object_size = gsize - 24;
614 asf->data_object_size = (uint64_t)-1;
620 if (!ff_guidcmp(&g, &ff_asf_file_header)) {
621 int ret = asf_read_file_properties(s, gsize);
624 } else if (!ff_guidcmp(&g, &ff_asf_stream_header)) {
625 asf_read_stream_properties(s, gsize);
626 } else if (!ff_guidcmp(&g, &ff_asf_comment_header)) {
627 asf_read_content_desc(s, gsize);
628 } else if (!ff_guidcmp(&g, &ff_asf_language_guid)) {
629 asf_read_language_list(s, gsize);
630 } else if (!ff_guidcmp(&g, &ff_asf_extended_content_header)) {
631 asf_read_ext_content_desc(s, gsize);
632 } else if (!ff_guidcmp(&g, &ff_asf_metadata_header)) {
633 asf_read_metadata(s, gsize);
634 } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_header)) {
635 asf_read_ext_stream_properties(s, gsize);
637 // there could be a optional stream properties object to follow
638 // if so the next iteration will pick it up
640 } else if (!ff_guidcmp(&g, &ff_asf_head1_guid)) {
644 } else if (!ff_guidcmp(&g, &ff_asf_marker_header)) {
645 asf_read_marker(s, gsize);
646 } else if (pb->eof_reached) {
650 if (!ff_guidcmp(&g, &ff_asf_content_encryption)) {
651 av_log(s, AV_LOG_WARNING, "DRM protected stream detected, decoding will likely fail!\n");
652 } else if (!ff_guidcmp(&g, &ff_asf_ext_content_encryption)) {
653 av_log(s, AV_LOG_WARNING, "Ext DRM protected stream detected, decoding will likely fail!\n");
654 } else if (!ff_guidcmp(&g, &ff_asf_digital_signature)) {
655 av_log(s, AV_LOG_WARNING, "Digital signature detected, decoding will likely fail!\n");
659 if(avio_tell(pb) != gpos + gsize)
660 av_log(s, AV_LOG_DEBUG, "gpos mismatch our pos=%"PRIu64", end=%"PRIu64"\n", avio_tell(pb)-gpos, gsize);
661 avio_seek(pb, gpos + gsize, SEEK_SET);
669 asf->data_offset = avio_tell(pb);
670 asf->packet_size_left = 0;
673 for(i=0; i<128; i++){
674 int stream_num= asf->asfid2avid[i];
676 AVStream *st = s->streams[stream_num];
677 if (!st->codec->bit_rate)
678 st->codec->bit_rate = asf->stream_bitrates[i];
679 if (asf->dar[i].num > 0 && asf->dar[i].den > 0){
680 av_reduce(&st->sample_aspect_ratio.num,
681 &st->sample_aspect_ratio.den,
682 asf->dar[i].num, asf->dar[i].den, INT_MAX);
683 } else if ((asf->dar[0].num > 0) && (asf->dar[0].den > 0) && (st->codec->codec_type==AVMEDIA_TYPE_VIDEO)) // Use ASF container value if the stream doesn't AR set.
684 av_reduce(&st->sample_aspect_ratio.num,
685 &st->sample_aspect_ratio.den,
686 asf->dar[0].num, asf->dar[0].den, INT_MAX);
688 //av_log(s, AV_LOG_INFO, "i=%d, st->codec->codec_type:%d, dar %d:%d sar=%d:%d\n", i, st->codec->codec_type, dar[i].num, dar[i].den, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
690 // copy and convert language codes to the frontend
691 if (asf->streams[i].stream_language_index < 128) {
692 const char *rfc1766 = asf->stream_languages[asf->streams[i].stream_language_index];
693 if (rfc1766 && strlen(rfc1766) > 1) {
694 const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
695 const char *iso6392 = av_convert_lang_to(primary_tag, AV_LANG_ISO639_2_BIBL);
697 av_dict_set(&st->metadata, "language", iso6392, 0);
703 ff_metadata_conv(&s->metadata, NULL, ff_asf_metadata_conv);
708 #define DO_2BITS(bits, var, defval) \
711 case 3: var = avio_rl32(pb); rsize += 4; break; \
712 case 2: var = avio_rl16(pb); rsize += 2; break; \
713 case 1: var = avio_r8(pb); rsize++; break; \
714 default: var = defval; break; \
718 * Load a single ASF packet into the demuxer.
719 * @param s demux context
720 * @param pb context to read data from
721 * @return 0 on success, <0 on error
723 static int ff_asf_get_packet(AVFormatContext *s, AVIOContext *pb)
725 ASFContext *asf = s->priv_data;
726 uint32_t packet_length, padsize;
730 // if we do not know packet size, allow skipping up to 32 kB
732 if (s->packet_size > 0)
733 off= (avio_tell(pb) - s->data_offset) % s->packet_size + 3;
739 if(c == 0x82 && !d && !e)
745 * This code allows handling of -EAGAIN at packet boundaries (i.e.
746 * if the packet sync code above triggers -EAGAIN). This does not
747 * imply complete -EAGAIN handling support at random positions in
750 if (pb->error == AVERROR(EAGAIN))
751 return AVERROR(EAGAIN);
752 if (!pb->eof_reached)
753 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, avio_tell(pb));
755 if ((c & 0x8f) == 0x82) {
757 if (!pb->eof_reached)
758 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
764 } else if (!pb->eof_reached) {
765 avio_seek(pb, -1, SEEK_CUR); //FIXME
768 asf->packet_flags = c;
769 asf->packet_property = d;
771 DO_2BITS(asf->packet_flags >> 5, packet_length, s->packet_size);
772 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
773 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
775 //the following checks prevent overflows and infinite loops
776 if(!packet_length || packet_length >= (1U<<29)){
777 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, avio_tell(pb));
780 if(padsize >= packet_length){
781 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, avio_tell(pb));
785 asf->packet_timestamp = avio_rl32(pb);
786 avio_rl16(pb); /* duration */
787 // rsize has at least 11 bytes which have to be present
789 if (asf->packet_flags & 0x01) {
790 asf->packet_segsizetype = avio_r8(pb); rsize++;
791 asf->packet_segments = asf->packet_segsizetype & 0x3f;
793 asf->packet_segments = 1;
794 asf->packet_segsizetype = 0x80;
796 if (rsize > packet_length - padsize) {
797 asf->packet_size_left = 0;
798 av_log(s, AV_LOG_ERROR,
799 "invalid packet header length %d for pktlen %d-%d at %"PRId64"\n",
800 rsize, packet_length, padsize, avio_tell(pb));
803 asf->packet_size_left = packet_length - padsize - rsize;
804 if (packet_length < asf->hdr.min_pktsize)
805 padsize += asf->hdr.min_pktsize - packet_length;
806 asf->packet_padsize = padsize;
807 av_dlog(s, "packet: size=%d padsize=%d left=%d\n", s->packet_size, asf->packet_padsize, asf->packet_size_left);
813 * @return <0 if error
815 static int asf_read_frame_header(AVFormatContext *s, AVIOContext *pb){
816 ASFContext *asf = s->priv_data;
818 int num = avio_r8(pb);
821 asf->packet_segments--;
822 asf->packet_key_frame = num >> 7;
823 asf->stream_index = asf->asfid2avid[num & 0x7f];
824 // sequence should be ignored!
825 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
826 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
827 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
828 //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);
829 if (asf->packet_replic_size >= 8) {
830 asf->packet_obj_size = avio_rl32(pb);
831 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
832 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
835 asf->packet_frag_timestamp = avio_rl32(pb); // timestamp
836 if(asf->packet_replic_size >= 8+38+4){
837 // for(i=0; i<asf->packet_replic_size-8; i++)
838 // av_log(s, AV_LOG_DEBUG, "%02X ",avio_r8(pb));
839 // av_log(s, AV_LOG_DEBUG, "\n");
845 avio_skip(pb, asf->packet_replic_size - 8 - 38 - 4);
846 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
847 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
849 avio_skip(pb, asf->packet_replic_size - 8);
850 rsize += asf->packet_replic_size; // FIXME - check validity
851 } else if (asf->packet_replic_size==1){
852 // multipacket - frag_offset is beginning timestamp
853 asf->packet_time_start = asf->packet_frag_offset;
854 asf->packet_frag_offset = 0;
855 asf->packet_frag_timestamp = asf->packet_timestamp;
857 asf->packet_time_delta = avio_r8(pb);
859 }else if(asf->packet_replic_size!=0){
860 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
863 if (asf->packet_flags & 0x01) {
864 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
865 if (rsize > asf->packet_size_left) {
866 av_log(s, AV_LOG_ERROR, "packet_replic_size is invalid\n");
868 } else if(asf->packet_frag_size > asf->packet_size_left - rsize){
869 if (asf->packet_frag_size > asf->packet_size_left - rsize + asf->packet_padsize) {
870 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid (%d-%d)\n", asf->packet_size_left, rsize);
873 int diff = asf->packet_frag_size - (asf->packet_size_left - rsize);
874 asf->packet_size_left += diff;
875 asf->packet_padsize -= diff;
878 //printf("Fragsize %d\n", asf->packet_frag_size);
880 if (rsize > asf->packet_size_left) {
881 av_log(s, AV_LOG_ERROR, "packet_replic_size is invalid\n");
884 asf->packet_frag_size = asf->packet_size_left - rsize;
885 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
887 if (asf->packet_replic_size == 1) {
888 asf->packet_multi_size = asf->packet_frag_size;
889 if (asf->packet_multi_size > asf->packet_size_left)
892 asf->packet_size_left -= rsize;
893 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
899 * Parse data from individual ASF packets (which were previously loaded
900 * with asf_get_packet()).
901 * @param s demux context
902 * @param pb context to read data from
903 * @param pkt pointer to store packet data into
904 * @return 0 if data was stored in pkt, <0 on error or 1 if more ASF
905 * packets need to be loaded (through asf_get_packet())
907 static int ff_asf_parse_packet(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
909 ASFContext *asf = s->priv_data;
910 ASFStream *asf_st = 0;
915 if (asf->packet_size_left < FRAME_HEADER_SIZE
916 || asf->packet_segments < 1) {
917 //asf->packet_size_left <= asf->packet_padsize) {
918 int ret = asf->packet_size_left + asf->packet_padsize;
919 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, avio_tell(pb));
924 asf->packet_pos= avio_tell(pb);
925 if (asf->data_object_size != (uint64_t)-1 &&
926 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
927 return AVERROR_EOF; /* Do not exceed the size of the data object */
930 if (asf->packet_time_start == 0) {
931 if(asf_read_frame_header(s, pb) < 0){
932 asf->packet_segments= 0;
935 if (asf->stream_index < 0
936 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
937 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
939 asf->packet_time_start = 0;
940 /* unhandled packet (should not happen) */
941 avio_skip(pb, asf->packet_frag_size);
942 asf->packet_size_left -= asf->packet_frag_size;
943 if(asf->stream_index < 0)
944 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
947 asf->asf_st = s->streams[asf->stream_index]->priv_data;
949 asf_st = asf->asf_st;
951 if (asf->packet_replic_size == 1) {
952 // frag_offset is here used as the beginning timestamp
953 asf->packet_frag_timestamp = asf->packet_time_start;
954 asf->packet_time_start += asf->packet_time_delta;
955 asf->packet_obj_size = asf->packet_frag_size = avio_r8(pb);
956 asf->packet_size_left--;
957 asf->packet_multi_size--;
958 if (asf->packet_multi_size < asf->packet_obj_size)
960 asf->packet_time_start = 0;
961 avio_skip(pb, asf->packet_multi_size);
962 asf->packet_size_left -= asf->packet_multi_size;
965 asf->packet_multi_size -= asf->packet_obj_size;
966 //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);
968 if( /*asf->packet_frag_size == asf->packet_obj_size*/
969 asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
970 && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
971 av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
972 asf_st->frag_offset, asf->packet_frag_size,
973 asf->packet_obj_size, asf_st->pkt.size);
974 asf->packet_obj_size= asf_st->pkt.size;
977 if ( asf_st->pkt.size != asf->packet_obj_size
978 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
979 if(asf_st->pkt.data){
980 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
981 asf_st->frag_offset = 0;
982 av_free_packet(&asf_st->pkt);
985 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
986 asf_st->seq = asf->packet_seq;
987 asf_st->pkt.dts = asf->packet_frag_timestamp - asf->hdr.preroll;
988 asf_st->pkt.stream_index = asf->stream_index;
990 asf_st->packet_pos= asf->packet_pos;
991 if (asf_st->pkt.data && asf_st->palette_changed) {
993 pal = av_packet_new_side_data(&asf_st->pkt, AV_PKT_DATA_PALETTE,
996 av_log(s, AV_LOG_ERROR, "Cannot append palette to packet\n");
998 memcpy(pal, asf_st->palette, AVPALETTE_SIZE);
999 asf_st->palette_changed = 0;
1002 //printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
1003 //asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & AV_PKT_FLAG_KEY,
1004 //s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO, asf->packet_obj_size);
1005 if (s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1006 asf->packet_key_frame = 1;
1007 if (asf->packet_key_frame)
1008 asf_st->pkt.flags |= AV_PKT_FLAG_KEY;
1012 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
1013 // s->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
1014 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
1015 asf->packet_size_left -= asf->packet_frag_size;
1016 if (asf->packet_size_left < 0)
1019 if( asf->packet_frag_offset >= asf_st->pkt.size
1020 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
1021 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
1022 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
1026 ret = avio_read(pb, asf_st->pkt.data + asf->packet_frag_offset,
1027 asf->packet_frag_size);
1028 if (ret != asf->packet_frag_size) {
1029 if (ret < 0 || asf->packet_frag_offset + ret == 0)
1030 return ret < 0 ? ret : AVERROR_EOF;
1031 if (asf_st->ds_span > 1) {
1032 // scrambling, we can either drop it completely or fill the remainder
1033 // TODO: should we fill the whole packet instead of just the current
1035 memset(asf_st->pkt.data + asf->packet_frag_offset + ret, 0,
1036 asf->packet_frag_size - ret);
1037 ret = asf->packet_frag_size;
1039 // no scrambling, so we can return partial packets
1040 av_shrink_packet(&asf_st->pkt, asf->packet_frag_offset + ret);
1042 if (s->key && s->keylen == 20)
1043 ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
1045 asf_st->frag_offset += ret;
1046 /* test if whole packet is read */
1047 if (asf_st->frag_offset == asf_st->pkt.size) {
1048 //workaround for macroshit radio DVR-MS files
1049 if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
1050 && asf_st->pkt.size > 100){
1052 for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
1053 if(i == asf_st->pkt.size){
1054 av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
1055 asf_st->frag_offset = 0;
1056 av_free_packet(&asf_st->pkt);
1062 if (asf_st->ds_span > 1) {
1063 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
1064 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);
1066 /* packet descrambling */
1067 uint8_t *newdata = av_malloc(asf_st->pkt.size + FF_INPUT_BUFFER_PADDING_SIZE);
1070 memset(newdata + asf_st->pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1071 while (offset < asf_st->pkt.size) {
1072 int off = offset / asf_st->ds_chunk_size;
1073 int row = off / asf_st->ds_span;
1074 int col = off % asf_st->ds_span;
1075 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
1076 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
1078 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
1079 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
1080 memcpy(newdata + offset,
1081 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
1082 asf_st->ds_chunk_size);
1083 offset += asf_st->ds_chunk_size;
1085 av_free(asf_st->pkt.data);
1086 asf_st->pkt.data = newdata;
1090 asf_st->frag_offset = 0;
1092 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
1093 asf_st->pkt.size = 0;
1094 asf_st->pkt.data = 0;
1095 break; // packet completed
1101 static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
1103 ASFContext *asf = s->priv_data;
1108 /* parse cached packets, if any */
1109 if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0)
1111 if ((ret = ff_asf_get_packet(s, s->pb)) < 0)
1112 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
1113 asf->packet_time_start = 0;
1117 // Added to support seeking after packets have been read
1118 // If information is not reset, read_packet fails due to
1119 // leftover information from previous reads
1120 static void asf_reset_header(AVFormatContext *s)
1122 ASFContext *asf = s->priv_data;
1126 asf->packet_size_left = 0;
1127 asf->packet_segments = 0;
1128 asf->packet_flags = 0;
1129 asf->packet_property = 0;
1130 asf->packet_timestamp = 0;
1131 asf->packet_segsizetype = 0;
1132 asf->packet_segments = 0;
1133 asf->packet_seq = 0;
1134 asf->packet_replic_size = 0;
1135 asf->packet_key_frame = 0;
1136 asf->packet_padsize = 0;
1137 asf->packet_frag_offset = 0;
1138 asf->packet_frag_size = 0;
1139 asf->packet_frag_timestamp = 0;
1140 asf->packet_multi_size = 0;
1141 asf->packet_obj_size = 0;
1142 asf->packet_time_delta = 0;
1143 asf->packet_time_start = 0;
1145 for(i=0; i<s->nb_streams; i++){
1146 asf_st= s->streams[i]->priv_data;
1147 av_free_packet(&asf_st->pkt);
1148 asf_st->frag_offset=0;
1154 static int asf_read_close(AVFormatContext *s)
1156 asf_reset_header(s);
1161 static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
1163 AVPacket pkt1, *pkt = &pkt1;
1168 int64_t start_pos[ASF_MAX_STREAMS];
1170 for(i=0; i<s->nb_streams; i++){
1174 if (s->packet_size > 0)
1175 pos= (pos+s->packet_size-1-s->data_offset)/s->packet_size*s->packet_size+ s->data_offset;
1177 avio_seek(s->pb, pos, SEEK_SET);
1179 //printf("asf_read_pts\n");
1180 asf_reset_header(s);
1182 if (asf_read_packet(s, pkt) < 0){
1183 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
1184 return AV_NOPTS_VALUE;
1189 av_free_packet(pkt);
1190 if(pkt->flags&AV_PKT_FLAG_KEY){
1191 i= pkt->stream_index;
1193 asf_st= s->streams[i]->priv_data;
1195 // assert((asf_st->packet_pos - s->data_offset) % s->packet_size == 0);
1196 pos= asf_st->packet_pos;
1198 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
1199 start_pos[i]= asf_st->packet_pos + 1;
1201 if(pkt->stream_index == stream_index)
1207 //printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
1212 static void asf_build_simple_index(AVFormatContext *s, int stream_index)
1215 ASFContext *asf = s->priv_data;
1216 int64_t current_pos= avio_tell(s->pb);
1219 avio_seek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
1220 ff_get_guid(s->pb, &g);
1222 /* the data object can be followed by other top-level objects,
1223 skip them until the simple index object is reached */
1224 while (ff_guidcmp(&g, &index_guid)) {
1225 int64_t gsize= avio_rl64(s->pb);
1226 if (gsize < 24 || s->pb->eof_reached) {
1227 avio_seek(s->pb, current_pos, SEEK_SET);
1230 avio_skip(s->pb, gsize-24);
1231 ff_get_guid(s->pb, &g);
1235 int64_t itime, last_pos=-1;
1237 int64_t av_unused gsize= avio_rl64(s->pb);
1238 ff_get_guid(s->pb, &g);
1239 itime=avio_rl64(s->pb);
1240 pct=avio_rl32(s->pb);
1241 ict=avio_rl32(s->pb);
1242 av_log(s, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
1244 for (i=0;i<ict;i++){
1245 int pktnum=avio_rl32(s->pb);
1246 int pktct =avio_rl16(s->pb);
1247 int64_t pos = s->data_offset + s->packet_size*(int64_t)pktnum;
1248 int64_t index_pts= FFMAX(av_rescale(itime, i, 10000) - asf->hdr.preroll, 0);
1250 if(pos != last_pos){
1251 av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d pts: %"PRId64"\n", pktnum, pktct, index_pts);
1252 av_add_index_entry(s->streams[stream_index], pos, index_pts, s->packet_size, 0, AVINDEX_KEYFRAME);
1258 avio_seek(s->pb, current_pos, SEEK_SET);
1261 static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
1263 ASFContext *asf = s->priv_data;
1264 AVStream *st = s->streams[stream_index];
1268 if (s->packet_size <= 0)
1271 /* Try using the protocol's read_seek if available */
1273 int ret = avio_seek_time(s->pb, stream_index, pts, flags);
1275 asf_reset_header(s);
1276 if (ret != AVERROR(ENOSYS))
1280 if (!asf->index_read)
1281 asf_build_simple_index(s, stream_index);
1283 if((asf->index_read && st->index_entries)){
1284 index= av_index_search_timestamp(st, pts, flags);
1286 /* find the position */
1287 pos = st->index_entries[index].pos;
1290 av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
1291 avio_seek(s->pb, pos, SEEK_SET);
1292 asf_reset_header(s);
1296 /* no index or seeking by index failed */
1297 if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0)
1299 asf_reset_header(s);
1303 AVInputFormat ff_asf_demuxer = {
1305 .long_name = NULL_IF_CONFIG_SMALL("ASF format"),
1306 .priv_data_size = sizeof(ASFContext),
1307 .read_probe = asf_probe,
1308 .read_header = asf_read_header,
1309 .read_packet = asf_read_packet,
1310 .read_close = asf_read_close,
1311 .read_seek = asf_read_seek,
1312 .read_timestamp = asf_read_pts,
1313 .flags = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH,