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 "libavcodec/mpegaudio.h"
30 #include "avio_internal.h"
34 #include "avlanguage.h"
37 int asfid2avid[128]; ///< conversion table from asf ID 2 AVStream ID
38 ASFStream streams[128]; ///< it's max number and it's not that big
39 uint32_t stream_bitrates[128]; ///< max number of streams, bitrate for each (for streaming)
41 char stream_languages[128][6]; ///< max number of streams, language for each (RFC1766, e.g. en-US)
42 /* non streamed additonnal info */
45 /* only for reading */
46 uint64_t data_offset; ///< beginning of the first data packet
47 uint64_t data_object_offset; ///< data object offset (excl. GUID & size)
48 uint64_t data_object_size; ///< size of the data object
56 int packet_segsizetype;
59 int packet_replic_size;
62 unsigned int packet_frag_offset;
63 unsigned int packet_frag_size;
64 int64_t packet_frag_timestamp;
65 int packet_multi_size;
67 int packet_time_delta;
68 int packet_time_start;
73 ASFStream* asf_st; ///< currently decoded stream
79 #define ASF_MAX_STREAMS 127
80 #define FRAME_HEADER_SIZE 17
81 // Fix Me! FRAME_HEADER_SIZE may be different.
83 static const ff_asf_guid index_guid = {
84 0x90, 0x08, 0x00, 0x33, 0xb1, 0xe5, 0xcf, 0x11, 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb
88 static const ff_asf_guid stream_bitrate_guid = { /* (http://get.to/sdp) */
89 0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2
92 #define PRINT_IF_GUID(g,cmp) \
93 if (!ff_guidcmp(g, &cmp)) \
94 av_dlog(NULL, "(GUID: %s) ", #cmp)
96 static void print_guid(const ff_asf_guid *g)
99 PRINT_IF_GUID(g, ff_asf_header);
100 else PRINT_IF_GUID(g, ff_asf_file_header);
101 else PRINT_IF_GUID(g, ff_asf_stream_header);
102 else PRINT_IF_GUID(g, ff_asf_audio_stream);
103 else PRINT_IF_GUID(g, ff_asf_audio_conceal_none);
104 else PRINT_IF_GUID(g, ff_asf_video_stream);
105 else PRINT_IF_GUID(g, ff_asf_video_conceal_none);
106 else PRINT_IF_GUID(g, ff_asf_command_stream);
107 else PRINT_IF_GUID(g, ff_asf_comment_header);
108 else PRINT_IF_GUID(g, ff_asf_codec_comment_header);
109 else PRINT_IF_GUID(g, ff_asf_codec_comment1_header);
110 else PRINT_IF_GUID(g, ff_asf_data_header);
111 else PRINT_IF_GUID(g, index_guid);
112 else PRINT_IF_GUID(g, ff_asf_head1_guid);
113 else PRINT_IF_GUID(g, ff_asf_head2_guid);
114 else PRINT_IF_GUID(g, ff_asf_my_guid);
115 else PRINT_IF_GUID(g, ff_asf_ext_stream_header);
116 else PRINT_IF_GUID(g, ff_asf_extended_content_header);
117 else PRINT_IF_GUID(g, ff_asf_ext_stream_embed_stream_header);
118 else PRINT_IF_GUID(g, ff_asf_ext_stream_audio_stream);
119 else PRINT_IF_GUID(g, ff_asf_metadata_header);
120 else PRINT_IF_GUID(g, ff_asf_marker_header);
121 else PRINT_IF_GUID(g, stream_bitrate_guid);
122 else PRINT_IF_GUID(g, ff_asf_language_guid);
124 av_dlog(NULL, "(GUID: unknown) ");
126 av_dlog(NULL, " 0x%02x,", (*g)[i]);
127 av_dlog(NULL, "}\n");
131 #define print_guid(g)
134 void ff_get_guid(AVIOContext *s, ff_asf_guid *g)
136 assert(sizeof(*g) == 16);
137 avio_read(s, *g, sizeof(*g));
140 static int asf_probe(AVProbeData *pd)
142 /* check file header */
143 if (!ff_guidcmp(pd->buf, &ff_asf_header))
144 return AVPROBE_SCORE_MAX;
149 static int get_value(AVIOContext *pb, int type){
151 case 2: return avio_rl32(pb);
152 case 3: return avio_rl32(pb);
153 case 4: return avio_rl64(pb);
154 case 5: return avio_rl16(pb);
155 default:return INT_MIN;
159 static void get_tag(AVFormatContext *s, const char *key, int type, int len)
162 int64_t off = avio_tell(s->pb);
164 if ((unsigned)len >= (UINT_MAX - 1)/2)
167 value = av_malloc(2*len+1);
171 if (type == 0) { // UTF16-LE
172 avio_get_str16le(s->pb, len, value, 2*len + 1);
173 } else if (type > 1 && type <= 5) { // boolean or DWORD or QWORD or WORD
174 uint64_t num = get_value(s->pb, type);
175 snprintf(value, len, "%"PRIu64, num);
177 av_log(s, AV_LOG_DEBUG, "Unsupported value type %d in tag %s.\n", type, key);
181 av_dict_set(&s->metadata, key, value, 0);
184 avio_seek(s->pb, off + len, SEEK_SET);
187 static int asf_read_file_properties(AVFormatContext *s, int64_t size)
189 ASFContext *asf = s->priv_data;
190 AVIOContext *pb = s->pb;
192 ff_get_guid(pb, &asf->hdr.guid);
193 asf->hdr.file_size = avio_rl64(pb);
194 asf->hdr.create_time = avio_rl64(pb);
195 avio_rl64(pb); /* number of packets */
196 asf->hdr.play_time = avio_rl64(pb);
197 asf->hdr.send_time = avio_rl64(pb);
198 asf->hdr.preroll = avio_rl32(pb);
199 asf->hdr.ignore = avio_rl32(pb);
200 asf->hdr.flags = avio_rl32(pb);
201 asf->hdr.min_pktsize = avio_rl32(pb);
202 asf->hdr.max_pktsize = avio_rl32(pb);
203 asf->hdr.max_bitrate = avio_rl32(pb);
204 s->packet_size = asf->hdr.max_pktsize;
209 static int asf_read_stream_properties(AVFormatContext *s, int64_t size)
211 ASFContext *asf = s->priv_data;
212 AVIOContext *pb = s->pb;
216 enum AVMediaType type;
217 int type_specific_size, sizeX;
219 int64_t pos1, pos2, start_time;
220 int test_for_ext_stream_audio, is_dvr_ms_audio=0;
222 if (s->nb_streams == ASF_MAX_STREAMS) {
223 av_log(s, AV_LOG_ERROR, "too many streams\n");
224 return AVERROR(EINVAL);
227 pos1 = avio_tell(pb);
229 st = av_new_stream(s, 0);
231 return AVERROR(ENOMEM);
232 av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
233 asf_st = av_mallocz(sizeof(ASFStream));
235 return AVERROR(ENOMEM);
236 st->priv_data = asf_st;
238 start_time = asf->hdr.preroll;
240 asf_st->stream_language_index = 128; // invalid stream index means no language info
242 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
243 st->duration = asf->hdr.play_time /
244 (10000000 / 1000) - start_time;
248 test_for_ext_stream_audio = 0;
249 if (!ff_guidcmp(&g, &ff_asf_audio_stream)) {
250 type = AVMEDIA_TYPE_AUDIO;
251 } else if (!ff_guidcmp(&g, &ff_asf_video_stream)) {
252 type = AVMEDIA_TYPE_VIDEO;
253 } else if (!ff_guidcmp(&g, &ff_asf_jfif_media)) {
254 type = AVMEDIA_TYPE_VIDEO;
255 st->codec->codec_id = CODEC_ID_MJPEG;
256 } else if (!ff_guidcmp(&g, &ff_asf_command_stream)) {
257 type = AVMEDIA_TYPE_DATA;
258 } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_embed_stream_header)) {
259 test_for_ext_stream_audio = 1;
260 type = AVMEDIA_TYPE_UNKNOWN;
265 avio_skip(pb, 8); /* total_size */
266 type_specific_size = avio_rl32(pb);
268 st->id = avio_rl16(pb) & 0x7f; /* stream id */
269 // mapping of asf ID to AV stream ID;
270 asf->asfid2avid[st->id] = s->nb_streams - 1;
274 if (test_for_ext_stream_audio) {
276 if (!ff_guidcmp(&g, &ff_asf_ext_stream_audio_stream)) {
277 type = AVMEDIA_TYPE_AUDIO;
288 st->codec->codec_type = type;
289 if (type == AVMEDIA_TYPE_AUDIO) {
290 int ret = ff_get_wav_header(pb, st->codec, type_specific_size);
293 if (is_dvr_ms_audio) {
294 // codec_id and codec_tag are unreliable in dvr_ms
295 // files. Set them later by probing stream.
296 st->codec->codec_id = CODEC_ID_PROBE;
297 st->codec->codec_tag = 0;
299 if (st->codec->codec_id == CODEC_ID_AAC) {
300 st->need_parsing = AVSTREAM_PARSE_NONE;
302 st->need_parsing = AVSTREAM_PARSE_FULL;
304 /* We have to init the frame size at some point .... */
305 pos2 = avio_tell(pb);
306 if (size >= (pos2 + 8 - pos1 + 24)) {
307 asf_st->ds_span = avio_r8(pb);
308 asf_st->ds_packet_size = avio_rl16(pb);
309 asf_st->ds_chunk_size = avio_rl16(pb);
310 avio_rl16(pb); //ds_data_size
311 avio_r8(pb); //ds_silence_data
313 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
314 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
315 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
316 if (asf_st->ds_span > 1) {
317 if (!asf_st->ds_chunk_size
318 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
319 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
320 asf_st->ds_span = 0; // disable descrambling
322 switch (st->codec->codec_id) {
324 st->codec->frame_size = MPA_FRAME_SIZE;
326 case CODEC_ID_PCM_S16LE:
327 case CODEC_ID_PCM_S16BE:
328 case CODEC_ID_PCM_U16LE:
329 case CODEC_ID_PCM_U16BE:
330 case CODEC_ID_PCM_S8:
331 case CODEC_ID_PCM_U8:
332 case CODEC_ID_PCM_ALAW:
333 case CODEC_ID_PCM_MULAW:
334 st->codec->frame_size = 1;
337 /* This is probably wrong, but it prevents a crash later */
338 st->codec->frame_size = 1;
341 } else if (type == AVMEDIA_TYPE_VIDEO &&
342 size - (avio_tell(pb) - pos1 + 24) >= 51) {
346 avio_rl16(pb); /* size */
347 sizeX= avio_rl32(pb); /* size */
348 st->codec->width = avio_rl32(pb);
349 st->codec->height = avio_rl32(pb);
350 /* not available for asf */
351 avio_rl16(pb); /* panes */
352 st->codec->bits_per_coded_sample = avio_rl16(pb); /* depth */
353 tag1 = avio_rl32(pb);
355 // av_log(s, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
357 st->codec->extradata_size = sizeX - 40;
358 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
359 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
362 /* Extract palette from extradata if bpp <= 8 */
363 /* This code assumes that extradata contains only palette */
364 /* This is true for all paletted codecs implemented in ffmpeg */
365 if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
368 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
369 asf_st->palette[i] = av_bswap32(((uint32_t*)st->codec->extradata)[i]);
371 memcpy(asf_st->palette, st->codec->extradata,
372 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
374 asf_st->palette_changed = 1;
377 st->codec->codec_tag = tag1;
378 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag1);
379 if(tag1 == MKTAG('D', 'V', 'R', ' ')){
380 st->need_parsing = AVSTREAM_PARSE_FULL;
381 // 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
383 st->codec->height = 0;
384 av_freep(&st->codec->extradata);
385 st->codec->extradata_size=0;
387 if(st->codec->codec_id == CODEC_ID_H264)
388 st->need_parsing = AVSTREAM_PARSE_FULL_ONCE;
390 pos2 = avio_tell(pb);
391 avio_skip(pb, size - (pos2 - pos1 + 24));
396 static int asf_read_ext_stream_properties(AVFormatContext *s, int64_t size)
398 ASFContext *asf = s->priv_data;
399 AVIOContext *pb = s->pb;
401 int ext_len, payload_ext_ct, stream_ct, i;
402 uint32_t leak_rate, stream_num;
403 unsigned int stream_languageid_index;
405 avio_rl64(pb); // starttime
406 avio_rl64(pb); // endtime
407 leak_rate = avio_rl32(pb); // leak-datarate
408 avio_rl32(pb); // bucket-datasize
409 avio_rl32(pb); // init-bucket-fullness
410 avio_rl32(pb); // alt-leak-datarate
411 avio_rl32(pb); // alt-bucket-datasize
412 avio_rl32(pb); // alt-init-bucket-fullness
413 avio_rl32(pb); // max-object-size
414 avio_rl32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
415 stream_num = avio_rl16(pb); // stream-num
417 stream_languageid_index = avio_rl16(pb); // stream-language-id-index
418 if (stream_num < 128)
419 asf->streams[stream_num].stream_language_index = stream_languageid_index;
421 avio_rl64(pb); // avg frametime in 100ns units
422 stream_ct = avio_rl16(pb); //stream-name-count
423 payload_ext_ct = avio_rl16(pb); //payload-extension-system-count
425 if (stream_num < 128)
426 asf->stream_bitrates[stream_num] = leak_rate;
428 for (i=0; i<stream_ct; i++){
430 ext_len = avio_rl16(pb);
431 avio_skip(pb, ext_len);
434 for (i=0; i<payload_ext_ct; i++){
437 ext_len=avio_rl32(pb);
438 avio_skip(pb, ext_len);
444 static int asf_read_content_desc(AVFormatContext *s, int64_t size)
446 AVIOContext *pb = s->pb;
447 int len1, len2, len3, len4, len5;
449 len1 = avio_rl16(pb);
450 len2 = avio_rl16(pb);
451 len3 = avio_rl16(pb);
452 len4 = avio_rl16(pb);
453 len5 = avio_rl16(pb);
454 get_tag(s, "title" , 0, len1);
455 get_tag(s, "author" , 0, len2);
456 get_tag(s, "copyright", 0, len3);
457 get_tag(s, "comment" , 0, len4);
463 static int asf_read_ext_content_desc(AVFormatContext *s, int64_t size)
465 AVIOContext *pb = s->pb;
466 ASFContext *asf = s->priv_data;
467 int desc_count, i, ret;
469 desc_count = avio_rl16(pb);
470 for(i=0;i<desc_count;i++) {
471 int name_len,value_type,value_len;
474 name_len = avio_rl16(pb);
475 if (name_len%2) // must be even, broken lavf versions wrote len-1
477 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
478 avio_skip(pb, name_len - ret);
479 value_type = avio_rl16(pb);
480 value_len = avio_rl16(pb);
481 if (!value_type && value_len%2)
484 * My sample has that stream set to 0 maybe that mean the container.
485 * Asf stream count start at 1. I am using 0 to the container value since it's unused
487 if (!strcmp(name, "AspectRatioX")){
488 asf->dar[0].num= get_value(s->pb, value_type);
489 } else if(!strcmp(name, "AspectRatioY")){
490 asf->dar[0].den= get_value(s->pb, value_type);
492 get_tag(s, name, value_type, value_len);
498 static int asf_read_language_list(AVFormatContext *s, int64_t size)
500 AVIOContext *pb = s->pb;
501 ASFContext *asf = s->priv_data;
503 int stream_count = avio_rl16(pb);
504 for(j = 0; j < stream_count; j++) {
506 unsigned int lang_len = avio_r8(pb);
507 if ((ret = avio_get_str16le(pb, lang_len, lang, sizeof(lang))) < lang_len)
508 avio_skip(pb, lang_len - ret);
510 av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
516 static int asf_read_metadata(AVFormatContext *s, int64_t size)
518 AVIOContext *pb = s->pb;
519 ASFContext *asf = s->priv_data;
520 int n, stream_num, name_len, value_len, value_num;
527 avio_rl16(pb); //lang_list_index
528 stream_num= avio_rl16(pb);
529 name_len= avio_rl16(pb);
530 avio_skip(pb, 2); /* value_type */
531 value_len= avio_rl32(pb);
533 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
534 avio_skip(pb, name_len - ret);
535 //av_log(s, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
536 value_num= avio_rl16(pb);//we should use get_value() here but it does not work 2 is le16 here but le32 elsewhere
537 avio_skip(pb, value_len - 2);
540 if (!strcmp(name, "AspectRatioX")) asf->dar[stream_num].num= value_num;
541 else if(!strcmp(name, "AspectRatioY")) asf->dar[stream_num].den= value_num;
548 static int asf_read_marker(AVFormatContext *s, int64_t size)
550 AVIOContext *pb = s->pb;
551 int i, count, name_len, ret;
554 avio_rl64(pb); // reserved 16 bytes
555 avio_rl64(pb); // ...
556 count = avio_rl32(pb); // markers count
557 avio_rl16(pb); // reserved 2 bytes
558 name_len = avio_rl16(pb); // name length
559 for(i=0;i<name_len;i++){
560 avio_r8(pb); // skip the name
563 for(i=0;i<count;i++){
567 avio_rl64(pb); // offset, 8 bytes
568 pres_time = avio_rl64(pb); // presentation time
569 avio_rl16(pb); // entry length
570 avio_rl32(pb); // send time
571 avio_rl32(pb); // flags
572 name_len = avio_rl32(pb); // name length
573 if ((ret = avio_get_str16le(pb, name_len * 2, name, sizeof(name))) < name_len)
574 avio_skip(pb, name_len - ret);
575 ff_new_chapter(s, i, (AVRational){1, 10000000}, pres_time, AV_NOPTS_VALUE, name );
581 static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
583 ASFContext *asf = s->priv_data;
585 AVIOContext *pb = s->pb;
590 if (ff_guidcmp(&g, &ff_asf_header))
596 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
598 uint64_t gpos= avio_tell(pb);
600 gsize = avio_rl64(pb);
601 av_dlog(s, "%08"PRIx64": ", gpos);
603 av_dlog(s, " size=0x%"PRIx64"\n", gsize);
604 if (!ff_guidcmp(&g, &ff_asf_data_header)) {
605 asf->data_object_offset = avio_tell(pb);
606 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
607 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
608 asf->data_object_size = gsize - 24;
610 asf->data_object_size = (uint64_t)-1;
616 if (!ff_guidcmp(&g, &ff_asf_file_header)) {
617 asf_read_file_properties(s, gsize);
618 } else if (!ff_guidcmp(&g, &ff_asf_stream_header)) {
619 asf_read_stream_properties(s, gsize);
620 } else if (!ff_guidcmp(&g, &ff_asf_comment_header)) {
621 asf_read_content_desc(s, gsize);
622 } else if (!ff_guidcmp(&g, &ff_asf_language_guid)) {
623 asf_read_language_list(s, gsize);
624 } else if (!ff_guidcmp(&g, &ff_asf_extended_content_header)) {
625 asf_read_ext_content_desc(s, gsize);
626 } else if (!ff_guidcmp(&g, &ff_asf_metadata_header)) {
627 asf_read_metadata(s, gsize);
628 } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_header)) {
629 asf_read_ext_stream_properties(s, gsize);
631 // there could be a optional stream properties object to follow
632 // if so the next iteration will pick it up
634 } else if (!ff_guidcmp(&g, &ff_asf_head1_guid)) {
638 } else if (!ff_guidcmp(&g, &ff_asf_marker_header)) {
639 asf_read_marker(s, gsize);
640 } else if (pb->eof_reached) {
644 if (!ff_guidcmp(&g, &ff_asf_content_encryption)) {
645 av_log(s, AV_LOG_WARNING, "DRM protected stream detected, decoding will likely fail!\n");
646 } else if (!ff_guidcmp(&g, &ff_asf_ext_content_encryption)) {
647 av_log(s, AV_LOG_WARNING, "Ext DRM protected stream detected, decoding will likely fail!\n");
648 } else if (!ff_guidcmp(&g, &ff_asf_digital_signature)) {
649 av_log(s, AV_LOG_WARNING, "Digital signature detected, decoding will likely fail!\n");
653 if(avio_tell(pb) != gpos + gsize)
654 av_log(s, AV_LOG_DEBUG, "gpos mismatch our pos=%"PRIu64", end=%"PRIu64"\n", avio_tell(pb)-gpos, gsize);
655 avio_seek(pb, gpos + gsize, SEEK_SET);
663 asf->data_offset = avio_tell(pb);
664 asf->packet_size_left = 0;
667 for(i=0; i<128; i++){
668 int stream_num= asf->asfid2avid[i];
670 AVStream *st = s->streams[stream_num];
671 if (!st->codec->bit_rate)
672 st->codec->bit_rate = asf->stream_bitrates[i];
673 if (asf->dar[i].num > 0 && asf->dar[i].den > 0){
674 av_reduce(&st->sample_aspect_ratio.num,
675 &st->sample_aspect_ratio.den,
676 asf->dar[i].num, asf->dar[i].den, INT_MAX);
677 } 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.
678 av_reduce(&st->sample_aspect_ratio.num,
679 &st->sample_aspect_ratio.den,
680 asf->dar[0].num, asf->dar[0].den, INT_MAX);
682 //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);
684 // copy and convert language codes to the frontend
685 if (asf->streams[i].stream_language_index < 128) {
686 const char *rfc1766 = asf->stream_languages[asf->streams[i].stream_language_index];
687 if (rfc1766 && strlen(rfc1766) > 1) {
688 const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
689 const char *iso6392 = av_convert_lang_to(primary_tag, AV_LANG_ISO639_2_BIBL);
691 av_dict_set(&st->metadata, "language", iso6392, 0);
697 ff_metadata_conv(&s->metadata, NULL, ff_asf_metadata_conv);
702 #define DO_2BITS(bits, var, defval) \
705 case 3: var = avio_rl32(pb); rsize += 4; break; \
706 case 2: var = avio_rl16(pb); rsize += 2; break; \
707 case 1: var = avio_r8(pb); rsize++; break; \
708 default: var = defval; break; \
712 * Load a single ASF packet into the demuxer.
713 * @param s demux context
714 * @param pb context to read data from
715 * @return 0 on success, <0 on error
717 static int ff_asf_get_packet(AVFormatContext *s, AVIOContext *pb)
719 ASFContext *asf = s->priv_data;
720 uint32_t packet_length, padsize;
724 // if we do not know packet size, allow skipping up to 32 kB
726 if (s->packet_size > 0)
727 off= (avio_tell(pb) - s->data_offset) % s->packet_size + 3;
733 if(c == 0x82 && !d && !e)
739 * This code allows handling of -EAGAIN at packet boundaries (i.e.
740 * if the packet sync code above triggers -EAGAIN). This does not
741 * imply complete -EAGAIN handling support at random positions in
744 if (pb->error == AVERROR(EAGAIN))
745 return AVERROR(EAGAIN);
746 if (!pb->eof_reached)
747 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, avio_tell(pb));
749 if ((c & 0x8f) == 0x82) {
751 if (!pb->eof_reached)
752 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
759 avio_seek(pb, -1, SEEK_CUR); //FIXME
762 asf->packet_flags = c;
763 asf->packet_property = d;
765 DO_2BITS(asf->packet_flags >> 5, packet_length, s->packet_size);
766 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
767 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
769 //the following checks prevent overflows and infinite loops
770 if(!packet_length || packet_length >= (1U<<29)){
771 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, avio_tell(pb));
774 if(padsize >= packet_length){
775 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, avio_tell(pb));
779 asf->packet_timestamp = avio_rl32(pb);
780 avio_rl16(pb); /* duration */
781 // rsize has at least 11 bytes which have to be present
783 if (asf->packet_flags & 0x01) {
784 asf->packet_segsizetype = avio_r8(pb); rsize++;
785 asf->packet_segments = asf->packet_segsizetype & 0x3f;
787 asf->packet_segments = 1;
788 asf->packet_segsizetype = 0x80;
790 asf->packet_size_left = packet_length - padsize - rsize;
791 if (packet_length < asf->hdr.min_pktsize)
792 padsize += asf->hdr.min_pktsize - packet_length;
793 asf->packet_padsize = padsize;
794 av_dlog(s, "packet: size=%d padsize=%d left=%d\n", s->packet_size, asf->packet_padsize, asf->packet_size_left);
800 * @return <0 if error
802 static int asf_read_frame_header(AVFormatContext *s, AVIOContext *pb){
803 ASFContext *asf = s->priv_data;
805 int num = avio_r8(pb);
808 asf->packet_segments--;
809 asf->packet_key_frame = num >> 7;
810 asf->stream_index = asf->asfid2avid[num & 0x7f];
811 // sequence should be ignored!
812 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
813 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
814 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
815 //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);
816 if (asf->packet_replic_size >= 8) {
817 asf->packet_obj_size = avio_rl32(pb);
818 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
819 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
822 asf->packet_frag_timestamp = avio_rl32(pb); // timestamp
823 if(asf->packet_replic_size >= 8+38+4){
824 // for(i=0; i<asf->packet_replic_size-8; i++)
825 // av_log(s, AV_LOG_DEBUG, "%02X ",avio_r8(pb));
826 // av_log(s, AV_LOG_DEBUG, "\n");
832 avio_skip(pb, asf->packet_replic_size - 8 - 38 - 4);
833 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
834 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
836 avio_skip(pb, asf->packet_replic_size - 8);
837 rsize += asf->packet_replic_size; // FIXME - check validity
838 } else if (asf->packet_replic_size==1){
839 // multipacket - frag_offset is beginning timestamp
840 asf->packet_time_start = asf->packet_frag_offset;
841 asf->packet_frag_offset = 0;
842 asf->packet_frag_timestamp = asf->packet_timestamp;
844 asf->packet_time_delta = avio_r8(pb);
846 }else if(asf->packet_replic_size!=0){
847 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
850 if (asf->packet_flags & 0x01) {
851 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
852 if (rsize > asf->packet_size_left) {
853 av_log(s, AV_LOG_ERROR, "packet_replic_size is invalid\n");
855 } else if(asf->packet_frag_size > asf->packet_size_left - rsize){
856 if (asf->packet_frag_size > asf->packet_size_left - rsize + asf->packet_padsize) {
857 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid (%d-%d)\n", asf->packet_size_left, rsize);
860 int diff = asf->packet_frag_size - (asf->packet_size_left - rsize);
861 asf->packet_size_left += diff;
862 asf->packet_padsize -= diff;
865 //printf("Fragsize %d\n", asf->packet_frag_size);
867 if (rsize > asf->packet_size_left) {
868 av_log(s, AV_LOG_ERROR, "packet_replic_size is invalid\n");
871 asf->packet_frag_size = asf->packet_size_left - rsize;
872 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
874 if (asf->packet_replic_size == 1) {
875 asf->packet_multi_size = asf->packet_frag_size;
876 if (asf->packet_multi_size > asf->packet_size_left)
879 asf->packet_size_left -= rsize;
880 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
886 * Parse data from individual ASF packets (which were previously loaded
887 * with asf_get_packet()).
888 * @param s demux context
889 * @param pb context to read data from
890 * @param pkt pointer to store packet data into
891 * @return 0 if data was stored in pkt, <0 on error or 1 if more ASF
892 * packets need to be loaded (through asf_get_packet())
894 static int ff_asf_parse_packet(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
896 ASFContext *asf = s->priv_data;
897 ASFStream *asf_st = 0;
902 if (asf->packet_size_left < FRAME_HEADER_SIZE
903 || asf->packet_segments < 1) {
904 //asf->packet_size_left <= asf->packet_padsize) {
905 int ret = asf->packet_size_left + asf->packet_padsize;
906 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, avio_tell(pb));
911 asf->packet_pos= avio_tell(pb);
912 if (asf->data_object_size != (uint64_t)-1 &&
913 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
914 return AVERROR_EOF; /* Do not exceed the size of the data object */
917 if (asf->packet_time_start == 0) {
918 if(asf_read_frame_header(s, pb) < 0){
919 asf->packet_segments= 0;
922 if (asf->stream_index < 0
923 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
924 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
926 asf->packet_time_start = 0;
927 /* unhandled packet (should not happen) */
928 avio_skip(pb, asf->packet_frag_size);
929 asf->packet_size_left -= asf->packet_frag_size;
930 if(asf->stream_index < 0)
931 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
934 asf->asf_st = s->streams[asf->stream_index]->priv_data;
936 asf_st = asf->asf_st;
938 if (asf->packet_replic_size == 1) {
939 // frag_offset is here used as the beginning timestamp
940 asf->packet_frag_timestamp = asf->packet_time_start;
941 asf->packet_time_start += asf->packet_time_delta;
942 asf->packet_obj_size = asf->packet_frag_size = avio_r8(pb);
943 asf->packet_size_left--;
944 asf->packet_multi_size--;
945 if (asf->packet_multi_size < asf->packet_obj_size)
947 asf->packet_time_start = 0;
948 avio_skip(pb, asf->packet_multi_size);
949 asf->packet_size_left -= asf->packet_multi_size;
952 asf->packet_multi_size -= asf->packet_obj_size;
953 //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);
955 if( /*asf->packet_frag_size == asf->packet_obj_size*/
956 asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
957 && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
958 av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
959 asf_st->frag_offset, asf->packet_frag_size,
960 asf->packet_obj_size, asf_st->pkt.size);
961 asf->packet_obj_size= asf_st->pkt.size;
964 if ( asf_st->pkt.size != asf->packet_obj_size
965 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
966 if(asf_st->pkt.data){
967 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
968 asf_st->frag_offset = 0;
969 av_free_packet(&asf_st->pkt);
972 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
973 asf_st->seq = asf->packet_seq;
974 asf_st->pkt.dts = asf->packet_frag_timestamp - asf->hdr.preroll;
975 asf_st->pkt.stream_index = asf->stream_index;
977 asf_st->packet_pos= asf->packet_pos;
978 if (asf_st->pkt.data && asf_st->palette_changed) {
980 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE,
983 av_log(s, AV_LOG_ERROR, "Cannot append palette to packet\n");
985 memcpy(pal, asf_st->palette, AVPALETTE_SIZE);
986 asf_st->palette_changed = 0;
989 //printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
990 //asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & AV_PKT_FLAG_KEY,
991 //s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO, asf->packet_obj_size);
992 if (s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO)
993 asf->packet_key_frame = 1;
994 if (asf->packet_key_frame)
995 asf_st->pkt.flags |= AV_PKT_FLAG_KEY;
999 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
1000 // s->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
1001 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
1002 asf->packet_size_left -= asf->packet_frag_size;
1003 if (asf->packet_size_left < 0)
1006 if( asf->packet_frag_offset >= asf_st->pkt.size
1007 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
1008 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
1009 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
1013 ret = avio_read(pb, asf_st->pkt.data + asf->packet_frag_offset,
1014 asf->packet_frag_size);
1015 if (ret != asf->packet_frag_size) {
1016 if (ret < 0 || asf->packet_frag_offset + ret == 0)
1017 return ret < 0 ? ret : AVERROR_EOF;
1018 if (asf_st->ds_span > 1) {
1019 // scrambling, we can either drop it completely or fill the remainder
1020 // TODO: should we fill the whole packet instead of just the current
1022 memset(asf_st->pkt.data + asf->packet_frag_offset + ret, 0,
1023 asf->packet_frag_size - ret);
1024 ret = asf->packet_frag_size;
1026 // no scrambling, so we can return partial packets
1027 av_shrink_packet(&asf_st->pkt, asf->packet_frag_offset + ret);
1029 if (s->key && s->keylen == 20)
1030 ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
1032 asf_st->frag_offset += ret;
1033 /* test if whole packet is read */
1034 if (asf_st->frag_offset == asf_st->pkt.size) {
1035 //workaround for macroshit radio DVR-MS files
1036 if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
1037 && asf_st->pkt.size > 100){
1039 for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
1040 if(i == asf_st->pkt.size){
1041 av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
1042 asf_st->frag_offset = 0;
1043 av_free_packet(&asf_st->pkt);
1049 if (asf_st->ds_span > 1) {
1050 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
1051 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);
1053 /* packet descrambling */
1054 uint8_t *newdata = av_malloc(asf_st->pkt.size + FF_INPUT_BUFFER_PADDING_SIZE);
1057 memset(newdata + asf_st->pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1058 while (offset < asf_st->pkt.size) {
1059 int off = offset / asf_st->ds_chunk_size;
1060 int row = off / asf_st->ds_span;
1061 int col = off % asf_st->ds_span;
1062 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
1063 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
1065 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
1066 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
1067 memcpy(newdata + offset,
1068 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
1069 asf_st->ds_chunk_size);
1070 offset += asf_st->ds_chunk_size;
1072 av_free(asf_st->pkt.data);
1073 asf_st->pkt.data = newdata;
1077 asf_st->frag_offset = 0;
1079 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
1080 asf_st->pkt.size = 0;
1081 asf_st->pkt.data = 0;
1082 break; // packet completed
1088 static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
1090 ASFContext *asf = s->priv_data;
1095 /* parse cached packets, if any */
1096 if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0)
1098 if ((ret = ff_asf_get_packet(s, s->pb)) < 0)
1099 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
1100 asf->packet_time_start = 0;
1104 // Added to support seeking after packets have been read
1105 // If information is not reset, read_packet fails due to
1106 // leftover information from previous reads
1107 static void asf_reset_header(AVFormatContext *s)
1109 ASFContext *asf = s->priv_data;
1113 asf->packet_size_left = 0;
1114 asf->packet_segments = 0;
1115 asf->packet_flags = 0;
1116 asf->packet_property = 0;
1117 asf->packet_timestamp = 0;
1118 asf->packet_segsizetype = 0;
1119 asf->packet_segments = 0;
1120 asf->packet_seq = 0;
1121 asf->packet_replic_size = 0;
1122 asf->packet_key_frame = 0;
1123 asf->packet_padsize = 0;
1124 asf->packet_frag_offset = 0;
1125 asf->packet_frag_size = 0;
1126 asf->packet_frag_timestamp = 0;
1127 asf->packet_multi_size = 0;
1128 asf->packet_obj_size = 0;
1129 asf->packet_time_delta = 0;
1130 asf->packet_time_start = 0;
1132 for(i=0; i<s->nb_streams; i++){
1133 asf_st= s->streams[i]->priv_data;
1134 av_free_packet(&asf_st->pkt);
1135 asf_st->frag_offset=0;
1141 static int asf_read_close(AVFormatContext *s)
1143 asf_reset_header(s);
1148 static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
1150 AVPacket pkt1, *pkt = &pkt1;
1155 int64_t start_pos[ASF_MAX_STREAMS];
1157 for(i=0; i<s->nb_streams; i++){
1161 if (s->packet_size > 0)
1162 pos= (pos+s->packet_size-1-s->data_offset)/s->packet_size*s->packet_size+ s->data_offset;
1164 avio_seek(s->pb, pos, SEEK_SET);
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);
1206 avio_seek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
1207 ff_get_guid(s->pb, &g);
1209 /* the data object can be followed by other top-level objects,
1210 skip them until the simple index object is reached */
1211 while (ff_guidcmp(&g, &index_guid)) {
1212 int64_t gsize= avio_rl64(s->pb);
1213 if (gsize < 24 || s->pb->eof_reached) {
1214 avio_seek(s->pb, current_pos, SEEK_SET);
1217 avio_skip(s->pb, gsize-24);
1218 ff_get_guid(s->pb, &g);
1222 int64_t itime, last_pos=-1;
1224 int64_t av_unused gsize= avio_rl64(s->pb);
1225 ff_get_guid(s->pb, &g);
1226 itime=avio_rl64(s->pb);
1227 pct=avio_rl32(s->pb);
1228 ict=avio_rl32(s->pb);
1229 av_log(s, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
1231 for (i=0;i<ict;i++){
1232 int pktnum=avio_rl32(s->pb);
1233 int pktct =avio_rl16(s->pb);
1234 int64_t pos = s->data_offset + s->packet_size*(int64_t)pktnum;
1235 int64_t index_pts= FFMAX(av_rescale(itime, i, 10000) - asf->hdr.preroll, 0);
1237 if(pos != last_pos){
1238 av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d pts: %"PRId64"\n", pktnum, pktct, index_pts);
1239 av_add_index_entry(s->streams[stream_index], pos, index_pts, s->packet_size, 0, AVINDEX_KEYFRAME);
1245 avio_seek(s->pb, current_pos, SEEK_SET);
1248 static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
1250 ASFContext *asf = s->priv_data;
1251 AVStream *st = s->streams[stream_index];
1255 if (s->packet_size <= 0)
1258 /* Try using the protocol's read_seek if available */
1260 int ret = avio_seek_time(s->pb, stream_index, pts, flags);
1262 asf_reset_header(s);
1263 if (ret != AVERROR(ENOSYS))
1267 if (!asf->index_read)
1268 asf_build_simple_index(s, stream_index);
1270 if((asf->index_read && st->index_entries)){
1271 index= av_index_search_timestamp(st, pts, flags);
1273 /* find the position */
1274 pos = st->index_entries[index].pos;
1277 av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
1278 avio_seek(s->pb, pos, SEEK_SET);
1279 asf_reset_header(s);
1283 /* no index or seeking by index failed */
1284 if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
1286 asf_reset_header(s);
1290 AVInputFormat ff_asf_demuxer = {
1292 NULL_IF_CONFIG_SMALL("ASF format"),
1300 .flags = AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH,