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/common.h"
25 #include "libavutil/avstring.h"
26 #include "libavcodec/mpegaudio.h"
28 #include "avio_internal.h"
32 #include "avlanguage.h"
35 int asfid2avid[128]; ///< conversion table from asf ID 2 AVStream ID
36 ASFStream streams[128]; ///< it's max number and it's not that big
37 uint32_t stream_bitrates[128]; ///< max number of streams, bitrate for each (for streaming)
39 char stream_languages[128][6]; ///< max number of streams, language for each (RFC1766, e.g. en-US)
40 /* non streamed additonnal info */
43 /* only for reading */
44 uint64_t data_offset; ///< beginning of the first data packet
45 uint64_t data_object_offset; ///< data object offset (excl. GUID & size)
46 uint64_t data_object_size; ///< size of the data object
54 int packet_segsizetype;
57 int packet_replic_size;
60 unsigned int packet_frag_offset;
61 unsigned int packet_frag_size;
62 int64_t packet_frag_timestamp;
63 int packet_multi_size;
65 int packet_time_delta;
66 int packet_time_start;
71 ASFStream* asf_st; ///< currently decoded stream
77 #define ASF_MAX_STREAMS 127
78 #define FRAME_HEADER_SIZE 17
79 // Fix Me! FRAME_HEADER_SIZE may be different.
81 static const ff_asf_guid index_guid = {
82 0x90, 0x08, 0x00, 0x33, 0xb1, 0xe5, 0xcf, 0x11, 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb
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
88 /**********************************/
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 static int asf_probe(AVProbeData *pd)
136 /* check file header */
137 if (!ff_guidcmp(pd->buf, &ff_asf_header))
138 return AVPROBE_SCORE_MAX;
143 static int get_value(AVIOContext *pb, int type){
145 case 2: return avio_rl32(pb);
146 case 3: return avio_rl32(pb);
147 case 4: return avio_rl64(pb);
148 case 5: return avio_rl16(pb);
149 default:return INT_MIN;
153 static void get_tag(AVFormatContext *s, const char *key, int type, int len)
156 int64_t off = avio_tell(s->pb);
158 if ((unsigned)len >= (UINT_MAX - 1)/2)
161 value = av_malloc(2*len+1);
165 if (type == 0) { // UTF16-LE
166 avio_get_str16le(s->pb, len, value, 2*len + 1);
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);
174 av_metadata_set2(&s->metadata, key, value, 0);
177 avio_seek(s->pb, off + len, SEEK_SET);
180 static int asf_read_file_properties(AVFormatContext *s, int64_t size)
182 ASFContext *asf = s->priv_data;
183 AVIOContext *pb = s->pb;
185 ff_get_guid(pb, &asf->hdr.guid);
186 asf->hdr.file_size = avio_rl64(pb);
187 asf->hdr.create_time = avio_rl64(pb);
188 avio_rl64(pb); /* number of packets */
189 asf->hdr.play_time = avio_rl64(pb);
190 asf->hdr.send_time = avio_rl64(pb);
191 asf->hdr.preroll = avio_rl32(pb);
192 asf->hdr.ignore = avio_rl32(pb);
193 asf->hdr.flags = avio_rl32(pb);
194 asf->hdr.min_pktsize = avio_rl32(pb);
195 asf->hdr.max_pktsize = avio_rl32(pb);
196 asf->hdr.max_bitrate = avio_rl32(pb);
197 s->packet_size = asf->hdr.max_pktsize;
202 static int asf_read_stream_properties(AVFormatContext *s, int64_t size)
204 ASFContext *asf = s->priv_data;
205 AVIOContext *pb = s->pb;
209 enum AVMediaType type;
210 int type_specific_size, sizeX;
213 int64_t pos1, pos2, start_time;
214 int test_for_ext_stream_audio, is_dvr_ms_audio=0;
216 if (s->nb_streams == ASF_MAX_STREAMS) {
217 av_log(s, AV_LOG_ERROR, "too many streams\n");
218 return AVERROR(EINVAL);
221 pos1 = avio_tell(pb);
223 st = av_new_stream(s, 0);
225 return AVERROR(ENOMEM);
226 av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
227 asf_st = av_mallocz(sizeof(ASFStream));
229 return AVERROR(ENOMEM);
230 st->priv_data = asf_st;
231 start_time = asf->hdr.preroll;
233 asf_st->stream_language_index = 128; // invalid stream index means no language info
235 if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
236 st->duration = asf->hdr.play_time /
237 (10000000 / 1000) - start_time;
241 test_for_ext_stream_audio = 0;
242 if (!ff_guidcmp(&g, &ff_asf_audio_stream)) {
243 type = AVMEDIA_TYPE_AUDIO;
244 } else if (!ff_guidcmp(&g, &ff_asf_video_stream)) {
245 type = AVMEDIA_TYPE_VIDEO;
246 } else if (!ff_guidcmp(&g, &ff_asf_jfif_media)) {
247 type = AVMEDIA_TYPE_VIDEO;
248 st->codec->codec_id = CODEC_ID_MJPEG;
249 } else if (!ff_guidcmp(&g, &ff_asf_command_stream)) {
250 type = AVMEDIA_TYPE_DATA;
251 } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_embed_stream_header)) {
252 test_for_ext_stream_audio = 1;
253 type = AVMEDIA_TYPE_UNKNOWN;
258 total_size = avio_rl64(pb);
259 type_specific_size = avio_rl32(pb);
261 st->id = avio_rl16(pb) & 0x7f; /* stream id */
262 // mapping of asf ID to AV stream ID;
263 asf->asfid2avid[st->id] = s->nb_streams - 1;
267 if (test_for_ext_stream_audio) {
269 if (!ff_guidcmp(&g, &ff_asf_ext_stream_audio_stream)) {
270 type = AVMEDIA_TYPE_AUDIO;
281 st->codec->codec_type = type;
282 if (type == AVMEDIA_TYPE_AUDIO) {
283 int ret = ff_get_wav_header(pb, st->codec, type_specific_size);
286 if (is_dvr_ms_audio) {
287 // codec_id and codec_tag are unreliable in dvr_ms
288 // files. Set them later by probing stream.
289 st->request_probe= 1;
290 st->codec->codec_tag = 0;
292 if (st->codec->codec_id == CODEC_ID_AAC) {
293 st->need_parsing = AVSTREAM_PARSE_NONE;
295 st->need_parsing = AVSTREAM_PARSE_FULL;
297 /* We have to init the frame size at some point .... */
298 pos2 = avio_tell(pb);
299 if (size >= (pos2 + 8 - pos1 + 24)) {
300 asf_st->ds_span = avio_r8(pb);
301 asf_st->ds_packet_size = avio_rl16(pb);
302 asf_st->ds_chunk_size = avio_rl16(pb);
303 avio_rl16(pb); //ds_data_size
304 avio_r8(pb); //ds_silence_data
306 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
307 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
308 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
309 if (asf_st->ds_span > 1) {
310 if (!asf_st->ds_chunk_size
311 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
312 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
313 asf_st->ds_span = 0; // disable descrambling
315 switch (st->codec->codec_id) {
317 st->codec->frame_size = MPA_FRAME_SIZE;
319 case CODEC_ID_PCM_S16LE:
320 case CODEC_ID_PCM_S16BE:
321 case CODEC_ID_PCM_U16LE:
322 case CODEC_ID_PCM_U16BE:
323 case CODEC_ID_PCM_S8:
324 case CODEC_ID_PCM_U8:
325 case CODEC_ID_PCM_ALAW:
326 case CODEC_ID_PCM_MULAW:
327 st->codec->frame_size = 1;
330 /* This is probably wrong, but it prevents a crash later */
331 st->codec->frame_size = 1;
334 } else if (type == AVMEDIA_TYPE_VIDEO &&
335 size - (avio_tell(pb) - pos1 + 24) >= 51) {
339 avio_rl16(pb); /* size */
340 sizeX= avio_rl32(pb); /* size */
341 st->codec->width = avio_rl32(pb);
342 st->codec->height = avio_rl32(pb);
343 /* not available for asf */
344 avio_rl16(pb); /* panes */
345 st->codec->bits_per_coded_sample = avio_rl16(pb); /* depth */
346 tag1 = avio_rl32(pb);
348 // av_log(s, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
350 st->codec->extradata_size = sizeX - 40;
351 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
352 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
355 /* Extract palette from extradata if bpp <= 8 */
356 /* This code assumes that extradata contains only palette */
357 /* This is true for all paletted codecs implemented in ffmpeg */
358 if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
360 st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
362 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
363 st->codec->palctrl->palette[i] = av_bswap32(((uint32_t*)st->codec->extradata)[i]);
365 memcpy(st->codec->palctrl->palette, st->codec->extradata,
366 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
368 st->codec->palctrl->palette_changed = 1;
371 st->codec->codec_tag = tag1;
372 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag1);
373 if(tag1 == MKTAG('D', 'V', 'R', ' ')){
374 st->need_parsing = AVSTREAM_PARSE_FULL;
375 // 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
377 st->codec->height = 0;
378 av_freep(&st->codec->extradata);
379 st->codec->extradata_size=0;
381 if(st->codec->codec_id == CODEC_ID_H264)
382 st->need_parsing = AVSTREAM_PARSE_FULL_ONCE;
384 pos2 = avio_tell(pb);
385 avio_skip(pb, size - (pos2 - pos1 + 24));
390 static int asf_read_ext_stream_properties(AVFormatContext *s, int64_t size)
392 ASFContext *asf = s->priv_data;
393 AVIOContext *pb = s->pb;
395 int ext_len, payload_ext_ct, stream_ct, i;
396 uint32_t ext_d, leak_rate, stream_num;
397 unsigned int stream_languageid_index;
399 avio_rl64(pb); // starttime
400 avio_rl64(pb); // endtime
401 leak_rate = avio_rl32(pb); // leak-datarate
402 avio_rl32(pb); // bucket-datasize
403 avio_rl32(pb); // init-bucket-fullness
404 avio_rl32(pb); // alt-leak-datarate
405 avio_rl32(pb); // alt-bucket-datasize
406 avio_rl32(pb); // alt-init-bucket-fullness
407 avio_rl32(pb); // max-object-size
408 avio_rl32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
409 stream_num = avio_rl16(pb); // stream-num
411 stream_languageid_index = avio_rl16(pb); // stream-language-id-index
412 if (stream_num < 128)
413 asf->streams[stream_num].stream_language_index = stream_languageid_index;
415 avio_rl64(pb); // avg frametime in 100ns units
416 stream_ct = avio_rl16(pb); //stream-name-count
417 payload_ext_ct = avio_rl16(pb); //payload-extension-system-count
419 if (stream_num < 128)
420 asf->stream_bitrates[stream_num] = leak_rate;
422 for (i=0; i<stream_ct; i++){
424 ext_len = avio_rl16(pb);
425 avio_skip(pb, ext_len);
428 for (i=0; i<payload_ext_ct; i++){
431 ext_len=avio_rl32(pb);
432 avio_skip(pb, ext_len);
438 static int asf_read_content_desc(AVFormatContext *s, int64_t size)
440 AVIOContext *pb = s->pb;
441 int len1, len2, len3, len4, len5;
443 len1 = avio_rl16(pb);
444 len2 = avio_rl16(pb);
445 len3 = avio_rl16(pb);
446 len4 = avio_rl16(pb);
447 len5 = avio_rl16(pb);
448 get_tag(s, "title" , 0, len1);
449 get_tag(s, "author" , 0, len2);
450 get_tag(s, "copyright", 0, len3);
451 get_tag(s, "comment" , 0, len4);
457 static int asf_read_ext_content_desc(AVFormatContext *s, int64_t size)
459 AVIOContext *pb = s->pb;
460 ASFContext *asf = s->priv_data;
461 int desc_count, i, ret;
463 desc_count = avio_rl16(pb);
464 for(i=0;i<desc_count;i++) {
465 int name_len,value_type,value_len;
468 name_len = avio_rl16(pb);
469 if (name_len%2) // must be even, broken lavf versions wrote len-1
471 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
472 avio_skip(pb, name_len - ret);
473 value_type = avio_rl16(pb);
474 value_len = avio_rl16(pb);
475 if (!value_type && value_len%2)
478 * My sample has that stream set to 0 maybe that mean the container.
479 * Asf stream count start at 1. I am using 0 to the container value since it's unused
481 if (!strcmp(name, "AspectRatioX")){
482 asf->dar[0].num= get_value(s->pb, value_type);
483 } else if(!strcmp(name, "AspectRatioY")){
484 asf->dar[0].den= get_value(s->pb, value_type);
486 get_tag(s, name, value_type, value_len);
492 static int asf_read_language_list(AVFormatContext *s, int64_t size)
494 AVIOContext *pb = s->pb;
495 ASFContext *asf = s->priv_data;
497 int stream_count = avio_rl16(pb);
498 for(j = 0; j < stream_count; j++) {
500 unsigned int lang_len = avio_r8(pb);
501 if ((ret = avio_get_str16le(pb, lang_len, lang, sizeof(lang))) < lang_len)
502 avio_skip(pb, lang_len - ret);
504 av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
510 static int asf_read_metadata(AVFormatContext *s, int64_t size)
512 AVIOContext *pb = s->pb;
513 ASFContext *asf = s->priv_data;
514 int n, stream_num, name_len, value_len, value_type, value_num;
521 avio_rl16(pb); //lang_list_index
522 stream_num= avio_rl16(pb);
523 name_len= avio_rl16(pb);
524 value_type= avio_rl16(pb);
525 value_len= avio_rl32(pb);
527 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
528 avio_skip(pb, name_len - ret);
529 //av_log(s, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
530 value_num= avio_rl16(pb);//we should use get_value() here but it does not work 2 is le16 here but le32 elsewhere
531 avio_skip(pb, value_len - 2);
534 if (!strcmp(name, "AspectRatioX")) asf->dar[stream_num].num= value_num;
535 else if(!strcmp(name, "AspectRatioY")) asf->dar[stream_num].den= value_num;
542 static int asf_read_marker(AVFormatContext *s, int64_t size)
544 AVIOContext *pb = s->pb;
545 int i, count, name_len, ret;
548 avio_rl64(pb); // reserved 16 bytes
549 avio_rl64(pb); // ...
550 count = avio_rl32(pb); // markers count
551 avio_rl16(pb); // reserved 2 bytes
552 name_len = avio_rl16(pb); // name length
553 for(i=0;i<name_len;i++){
554 avio_r8(pb); // skip the name
557 for(i=0;i<count;i++){
561 avio_rl64(pb); // offset, 8 bytes
562 pres_time = avio_rl64(pb); // presentation time
563 avio_rl16(pb); // entry length
564 avio_rl32(pb); // send time
565 avio_rl32(pb); // flags
566 name_len = avio_rl32(pb); // name length
567 if ((ret = avio_get_str16le(pb, name_len * 2, name, sizeof(name))) < name_len)
568 avio_skip(pb, name_len - ret);
569 ff_new_chapter(s, i, (AVRational){1, 10000000}, pres_time, AV_NOPTS_VALUE, name );
575 static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
577 ASFContext *asf = s->priv_data;
579 AVIOContext *pb = s->pb;
584 if (ff_guidcmp(&g, &ff_asf_header))
590 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
592 uint64_t gpos= avio_tell(pb);
594 gsize = avio_rl64(pb);
595 av_dlog(s, "%08"PRIx64": ", gpos);
597 av_dlog(s, " size=0x%"PRIx64"\n", gsize);
598 if (!ff_guidcmp(&g, &ff_asf_data_header)) {
599 asf->data_object_offset = avio_tell(pb);
600 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
601 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
602 asf->data_object_size = gsize - 24;
604 asf->data_object_size = (uint64_t)-1;
610 if (!ff_guidcmp(&g, &ff_asf_file_header)) {
611 asf_read_file_properties(s, gsize);
612 } else if (!ff_guidcmp(&g, &ff_asf_stream_header)) {
613 asf_read_stream_properties(s, gsize);
614 } else if (!ff_guidcmp(&g, &ff_asf_comment_header)) {
615 asf_read_content_desc(s, gsize);
616 } else if (!ff_guidcmp(&g, &ff_asf_language_guid)) {
617 asf_read_language_list(s, gsize);
618 } else if (!ff_guidcmp(&g, &ff_asf_extended_content_header)) {
619 asf_read_ext_content_desc(s, gsize);
620 } else if (!ff_guidcmp(&g, &ff_asf_metadata_header)) {
621 asf_read_metadata(s, gsize);
622 } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_header)) {
623 asf_read_ext_stream_properties(s, gsize);
625 // there could be a optional stream properties object to follow
626 // if so the next iteration will pick it up
628 } else if (!ff_guidcmp(&g, &ff_asf_head1_guid)) {
634 } else if (!ff_guidcmp(&g, &ff_asf_marker_header)) {
635 asf_read_marker(s, gsize);
636 } else if (url_feof(pb)) {
640 if (!ff_guidcmp(&g, &ff_asf_content_encryption)) {
641 av_log(s, AV_LOG_WARNING, "DRM protected stream detected, decoding will likely fail!\n");
642 } else if (!ff_guidcmp(&g, &ff_asf_ext_content_encryption)) {
643 av_log(s, AV_LOG_WARNING, "Ext DRM protected stream detected, decoding will likely fail!\n");
644 } else if (!ff_guidcmp(&g, &ff_asf_digital_signature)) {
645 av_log(s, AV_LOG_WARNING, "Digital signature detected, decoding will likely fail!\n");
649 if(avio_tell(pb) != gpos + gsize)
650 av_log(s, AV_LOG_DEBUG, "gpos mismatch our pos=%"PRIu64", end=%"PRIu64"\n", avio_tell(pb)-gpos, gsize);
651 avio_seek(pb, gpos + gsize, SEEK_SET);
659 asf->data_offset = avio_tell(pb);
660 asf->packet_size_left = 0;
663 for(i=0; i<128; i++){
664 int stream_num= asf->asfid2avid[i];
666 AVStream *st = s->streams[stream_num];
667 if (!st->codec->bit_rate)
668 st->codec->bit_rate = asf->stream_bitrates[i];
669 if (asf->dar[i].num > 0 && asf->dar[i].den > 0){
670 av_reduce(&st->sample_aspect_ratio.num,
671 &st->sample_aspect_ratio.den,
672 asf->dar[i].num, asf->dar[i].den, INT_MAX);
673 } 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.
674 av_reduce(&st->sample_aspect_ratio.num,
675 &st->sample_aspect_ratio.den,
676 asf->dar[0].num, asf->dar[0].den, INT_MAX);
678 //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);
680 // copy and convert language codes to the frontend
681 if (asf->streams[i].stream_language_index < 128) {
682 const char *rfc1766 = asf->stream_languages[asf->streams[i].stream_language_index];
683 if (rfc1766 && strlen(rfc1766) > 1) {
684 const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
685 const char *iso6392 = av_convert_lang_to(primary_tag, AV_LANG_ISO639_2_BIBL);
687 av_metadata_set2(&st->metadata, "language", iso6392, 0);
693 ff_metadata_conv(&s->metadata, NULL, ff_asf_metadata_conv);
698 #define DO_2BITS(bits, var, defval) \
701 case 3: var = avio_rl32(pb); rsize += 4; break; \
702 case 2: var = avio_rl16(pb); rsize += 2; break; \
703 case 1: var = avio_r8(pb); rsize++; break; \
704 default: var = defval; break; \
708 * Load a single ASF packet into the demuxer.
709 * @param s demux context
710 * @param pb context to read data from
711 * @return 0 on success, <0 on error
713 static int ff_asf_get_packet(AVFormatContext *s, AVIOContext *pb)
715 ASFContext *asf = s->priv_data;
716 uint32_t packet_length, padsize;
720 // if we do not know packet size, allow skipping up to 32 kB
722 if (s->packet_size > 0)
723 off= (avio_tell(pb) - s->data_offset) % s->packet_size + 3;
729 if(c == 0x82 && !d && !e)
735 * This code allows handling of -EAGAIN at packet boundaries (i.e.
736 * if the packet sync code above triggers -EAGAIN). This does not
737 * imply complete -EAGAIN handling support at random positions in
740 if (pb->error == AVERROR(EAGAIN))
741 return AVERROR(EAGAIN);
743 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, avio_tell(pb));
745 if ((c & 0x8f) == 0x82) {
748 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
755 avio_seek(pb, -1, SEEK_CUR); //FIXME
758 asf->packet_flags = c;
759 asf->packet_property = d;
761 DO_2BITS(asf->packet_flags >> 5, packet_length, s->packet_size);
762 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
763 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
765 //the following checks prevent overflows and infinite loops
766 if(!packet_length || packet_length >= (1U<<29)){
767 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, avio_tell(pb));
770 if(padsize >= packet_length){
771 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, avio_tell(pb));
775 asf->packet_timestamp = avio_rl32(pb);
776 avio_rl16(pb); /* duration */
777 // rsize has at least 11 bytes which have to be present
779 if (asf->packet_flags & 0x01) {
780 asf->packet_segsizetype = avio_r8(pb); rsize++;
781 asf->packet_segments = asf->packet_segsizetype & 0x3f;
783 asf->packet_segments = 1;
784 asf->packet_segsizetype = 0x80;
786 asf->packet_size_left = packet_length - padsize - rsize;
787 if (packet_length < asf->hdr.min_pktsize)
788 padsize += asf->hdr.min_pktsize - packet_length;
789 asf->packet_padsize = padsize;
790 av_dlog(s, "packet: size=%d padsize=%d left=%d\n", s->packet_size, asf->packet_padsize, asf->packet_size_left);
796 * @return <0 if error
798 static int asf_read_frame_header(AVFormatContext *s, AVIOContext *pb){
799 ASFContext *asf = s->priv_data;
801 int num = avio_r8(pb);
804 asf->packet_segments--;
805 asf->packet_key_frame = num >> 7;
806 asf->stream_index = asf->asfid2avid[num & 0x7f];
807 // sequence should be ignored!
808 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
809 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
810 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
811 //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);
812 if (asf->packet_replic_size >= 8) {
813 asf->packet_obj_size = avio_rl32(pb);
814 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
815 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
818 asf->packet_frag_timestamp = avio_rl32(pb); // timestamp
819 if(asf->packet_replic_size >= 8+38+4){
820 // for(i=0; i<asf->packet_replic_size-8; i++)
821 // av_log(s, AV_LOG_DEBUG, "%02X ",avio_r8(pb));
822 // av_log(s, AV_LOG_DEBUG, "\n");
828 avio_skip(pb, asf->packet_replic_size - 8 - 38 - 4);
829 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
830 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
832 avio_skip(pb, asf->packet_replic_size - 8);
833 rsize += asf->packet_replic_size; // FIXME - check validity
834 } else if (asf->packet_replic_size==1){
835 // multipacket - frag_offset is beginning timestamp
836 asf->packet_time_start = asf->packet_frag_offset;
837 asf->packet_frag_offset = 0;
838 asf->packet_frag_timestamp = asf->packet_timestamp;
840 asf->packet_time_delta = avio_r8(pb);
842 }else if(asf->packet_replic_size!=0){
843 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
846 if (asf->packet_flags & 0x01) {
847 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
848 if(asf->packet_frag_size > asf->packet_size_left - rsize){
849 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid\n");
852 //printf("Fragsize %d\n", asf->packet_frag_size);
854 asf->packet_frag_size = asf->packet_size_left - rsize;
855 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
857 if (asf->packet_replic_size == 1) {
858 asf->packet_multi_size = asf->packet_frag_size;
859 if (asf->packet_multi_size > asf->packet_size_left)
862 asf->packet_size_left -= rsize;
863 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
869 * Parse data from individual ASF packets (which were previously loaded
870 * with asf_get_packet()).
871 * @param s demux context
872 * @param pb context to read data from
873 * @param pkt pointer to store packet data into
874 * @return 0 if data was stored in pkt, <0 on error or 1 if more ASF
875 * packets need to be loaded (through asf_get_packet())
877 static int ff_asf_parse_packet(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
879 ASFContext *asf = s->priv_data;
880 ASFStream *asf_st = 0;
885 if (asf->packet_size_left < FRAME_HEADER_SIZE
886 || asf->packet_segments < 1) {
887 //asf->packet_size_left <= asf->packet_padsize) {
888 int ret = asf->packet_size_left + asf->packet_padsize;
889 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, avio_tell(pb));
894 asf->packet_pos= avio_tell(pb);
895 if (asf->data_object_size != (uint64_t)-1 &&
896 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
897 return AVERROR_EOF; /* Do not exceed the size of the data object */
900 if (asf->packet_time_start == 0) {
901 if(asf_read_frame_header(s, pb) < 0){
902 asf->packet_segments= 0;
905 if (asf->stream_index < 0
906 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
907 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
909 asf->packet_time_start = 0;
910 /* unhandled packet (should not happen) */
911 avio_skip(pb, asf->packet_frag_size);
912 asf->packet_size_left -= asf->packet_frag_size;
913 if(asf->stream_index < 0)
914 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
917 asf->asf_st = s->streams[asf->stream_index]->priv_data;
919 asf_st = asf->asf_st;
921 if (asf->packet_replic_size == 1) {
922 // frag_offset is here used as the beginning timestamp
923 asf->packet_frag_timestamp = asf->packet_time_start;
924 asf->packet_time_start += asf->packet_time_delta;
925 asf->packet_obj_size = asf->packet_frag_size = avio_r8(pb);
926 asf->packet_size_left--;
927 asf->packet_multi_size--;
928 if (asf->packet_multi_size < asf->packet_obj_size)
930 asf->packet_time_start = 0;
931 avio_skip(pb, asf->packet_multi_size);
932 asf->packet_size_left -= asf->packet_multi_size;
935 asf->packet_multi_size -= asf->packet_obj_size;
936 //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);
938 if( /*asf->packet_frag_size == asf->packet_obj_size*/
939 asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
940 && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
941 av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
942 asf_st->frag_offset, asf->packet_frag_size,
943 asf->packet_obj_size, asf_st->pkt.size);
944 asf->packet_obj_size= asf_st->pkt.size;
947 if ( asf_st->pkt.size != asf->packet_obj_size
948 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
949 if(asf_st->pkt.data){
950 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
951 asf_st->frag_offset = 0;
952 av_free_packet(&asf_st->pkt);
955 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
956 asf_st->seq = asf->packet_seq;
957 asf_st->pkt.dts = asf->packet_frag_timestamp - asf->hdr.preroll;
958 asf_st->pkt.stream_index = asf->stream_index;
960 asf_st->packet_pos= asf->packet_pos;
961 //printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
962 //asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & AV_PKT_FLAG_KEY,
963 //s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO, asf->packet_obj_size);
964 if (s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO)
965 asf->packet_key_frame = 1;
966 if (asf->packet_key_frame)
967 asf_st->pkt.flags |= AV_PKT_FLAG_KEY;
971 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
972 // s->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
973 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
974 asf->packet_size_left -= asf->packet_frag_size;
975 if (asf->packet_size_left < 0)
978 if( asf->packet_frag_offset >= asf_st->pkt.size
979 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
980 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
981 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
985 ret = avio_read(pb, asf_st->pkt.data + asf->packet_frag_offset,
986 asf->packet_frag_size);
987 if (ret != asf->packet_frag_size) {
988 if (ret < 0 || asf->packet_frag_offset + ret == 0)
989 return ret < 0 ? ret : AVERROR_EOF;
990 if (asf_st->ds_span > 1) {
991 // scrambling, we can either drop it completely or fill the remainder
992 // TODO: should we fill the whole packet instead of just the current
994 memset(asf_st->pkt.data + asf->packet_frag_offset + ret, 0,
995 asf->packet_frag_size - ret);
996 ret = asf->packet_frag_size;
998 // no scrambling, so we can return partial packets
999 av_shrink_packet(&asf_st->pkt, asf->packet_frag_offset + ret);
1001 if (s->key && s->keylen == 20)
1002 ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
1004 asf_st->frag_offset += ret;
1005 /* test if whole packet is read */
1006 if (asf_st->frag_offset == asf_st->pkt.size) {
1007 //workaround for macroshit radio DVR-MS files
1008 if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
1009 && asf_st->pkt.size > 100){
1011 for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
1012 if(i == asf_st->pkt.size){
1013 av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
1014 asf_st->frag_offset = 0;
1015 av_free_packet(&asf_st->pkt);
1021 if (asf_st->ds_span > 1) {
1022 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
1023 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);
1025 /* packet descrambling */
1026 uint8_t *newdata = av_malloc(asf_st->pkt.size + FF_INPUT_BUFFER_PADDING_SIZE);
1029 memset(newdata + asf_st->pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1030 while (offset < asf_st->pkt.size) {
1031 int off = offset / asf_st->ds_chunk_size;
1032 int row = off / asf_st->ds_span;
1033 int col = off % asf_st->ds_span;
1034 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
1035 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
1037 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
1038 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
1039 memcpy(newdata + offset,
1040 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
1041 asf_st->ds_chunk_size);
1042 offset += asf_st->ds_chunk_size;
1044 av_free(asf_st->pkt.data);
1045 asf_st->pkt.data = newdata;
1049 asf_st->frag_offset = 0;
1051 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
1052 asf_st->pkt.size = 0;
1053 asf_st->pkt.data = 0;
1054 break; // packet completed
1060 static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
1062 ASFContext *asf = s->priv_data;
1067 /* parse cached packets, if any */
1068 if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0)
1070 if ((ret = ff_asf_get_packet(s, s->pb)) < 0)
1071 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
1072 asf->packet_time_start = 0;
1078 // Added to support seeking after packets have been read
1079 // If information is not reset, read_packet fails due to
1080 // leftover information from previous reads
1081 static void asf_reset_header(AVFormatContext *s)
1083 ASFContext *asf = s->priv_data;
1087 asf->packet_size_left = 0;
1088 asf->packet_segments = 0;
1089 asf->packet_flags = 0;
1090 asf->packet_property = 0;
1091 asf->packet_timestamp = 0;
1092 asf->packet_segsizetype = 0;
1093 asf->packet_segments = 0;
1094 asf->packet_seq = 0;
1095 asf->packet_replic_size = 0;
1096 asf->packet_key_frame = 0;
1097 asf->packet_padsize = 0;
1098 asf->packet_frag_offset = 0;
1099 asf->packet_frag_size = 0;
1100 asf->packet_frag_timestamp = 0;
1101 asf->packet_multi_size = 0;
1102 asf->packet_obj_size = 0;
1103 asf->packet_time_delta = 0;
1104 asf->packet_time_start = 0;
1106 for(i=0; i<s->nb_streams; i++){
1107 asf_st= s->streams[i]->priv_data;
1108 av_free_packet(&asf_st->pkt);
1109 asf_st->frag_offset=0;
1115 static int asf_read_close(AVFormatContext *s)
1119 asf_reset_header(s);
1120 for(i=0;i<s->nb_streams;i++) {
1121 AVStream *st = s->streams[i];
1122 av_free(st->codec->palctrl);
1127 static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
1129 AVPacket pkt1, *pkt = &pkt1;
1134 int64_t start_pos[ASF_MAX_STREAMS];
1136 for(i=0; i<s->nb_streams; i++){
1140 if (s->packet_size > 0)
1141 pos= (pos+s->packet_size-1-s->data_offset)/s->packet_size*s->packet_size+ s->data_offset;
1143 avio_seek(s->pb, pos, SEEK_SET);
1145 //printf("asf_read_pts\n");
1146 asf_reset_header(s);
1148 if (av_read_frame(s, pkt) < 0){
1149 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
1150 return AV_NOPTS_VALUE;
1155 av_free_packet(pkt);
1156 if(pkt->flags&AV_PKT_FLAG_KEY){
1157 i= pkt->stream_index;
1159 asf_st= s->streams[i]->priv_data;
1161 // assert((asf_st->packet_pos - s->data_offset) % s->packet_size == 0);
1162 pos= asf_st->packet_pos;
1164 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
1165 start_pos[i]= asf_st->packet_pos + 1;
1167 if(pkt->stream_index == stream_index)
1173 //printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
1178 static void asf_build_simple_index(AVFormatContext *s, int stream_index)
1181 ASFContext *asf = s->priv_data;
1182 int64_t current_pos= avio_tell(s->pb);
1185 avio_seek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
1186 ff_get_guid(s->pb, &g);
1188 /* the data object can be followed by other top-level objects,
1189 skip them until the simple index object is reached */
1190 while (ff_guidcmp(&g, &index_guid)) {
1191 int64_t gsize= avio_rl64(s->pb);
1192 if (gsize < 24 || url_feof(s->pb)) {
1193 avio_seek(s->pb, current_pos, SEEK_SET);
1196 avio_skip(s->pb, gsize-24);
1197 ff_get_guid(s->pb, &g);
1201 int64_t itime, last_pos=-1;
1203 int64_t av_unused gsize= avio_rl64(s->pb);
1204 ff_get_guid(s->pb, &g);
1205 itime=avio_rl64(s->pb);
1206 pct=avio_rl32(s->pb);
1207 ict=avio_rl32(s->pb);
1208 av_log(s, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
1210 for (i=0;i<ict;i++){
1211 int pktnum=avio_rl32(s->pb);
1212 int pktct =avio_rl16(s->pb);
1213 int64_t pos = s->data_offset + s->packet_size*(int64_t)pktnum;
1214 int64_t index_pts= FFMAX(av_rescale(itime, i, 10000) - asf->hdr.preroll, 0);
1216 if(pos != last_pos){
1217 av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d pts: %"PRId64"\n", pktnum, pktct, index_pts);
1218 av_add_index_entry(s->streams[stream_index], pos, index_pts, s->packet_size, 0, AVINDEX_KEYFRAME);
1224 avio_seek(s->pb, current_pos, SEEK_SET);
1227 static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
1229 ASFContext *asf = s->priv_data;
1230 AVStream *st = s->streams[stream_index];
1234 if (s->packet_size <= 0)
1237 /* Try using the protocol's read_seek if available */
1239 int ret = avio_seek_time(s->pb, stream_index, pts, flags);
1241 asf_reset_header(s);
1242 if (ret != AVERROR(ENOSYS))
1246 if (!asf->index_read)
1247 asf_build_simple_index(s, stream_index);
1249 if(!(asf->index_read && st->index_entries)){
1250 if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
1253 index= av_index_search_timestamp(st, pts, flags);
1257 /* find the position */
1258 pos = st->index_entries[index].pos;
1260 // various attempts to find key frame have failed so far
1261 // asf_reset_header(s);
1262 // avio_seek(s->pb, pos, SEEK_SET);
1264 // for(i=0;i<16;i++){
1265 // pos = avio_tell(s->pb);
1266 // if (av_read_frame(s, &pkt) < 0){
1267 // av_log(s, AV_LOG_INFO, "seek failed\n");
1270 // asf_st = s->streams[stream_index]->priv_data;
1271 // pos += st->parser->frame_offset;
1273 // if (pkt.size > b) {
1278 // av_free_packet(&pkt);
1282 av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
1283 avio_seek(s->pb, pos, SEEK_SET);
1285 asf_reset_header(s);
1289 AVInputFormat ff_asf_demuxer = {
1291 NULL_IF_CONFIG_SMALL("ASF format"),