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 ff_get_wav_header(pb, st->codec, type_specific_size);
284 if (is_dvr_ms_audio) {
285 // codec_id and codec_tag are unreliable in dvr_ms
286 // files. Set them later by probing stream.
287 st->request_probe= 1;
288 st->codec->codec_tag = 0;
290 if (st->codec->codec_id == CODEC_ID_AAC) {
291 st->need_parsing = AVSTREAM_PARSE_NONE;
293 st->need_parsing = AVSTREAM_PARSE_FULL;
295 /* We have to init the frame size at some point .... */
296 pos2 = avio_tell(pb);
297 if (size >= (pos2 + 8 - pos1 + 24)) {
298 asf_st->ds_span = avio_r8(pb);
299 asf_st->ds_packet_size = avio_rl16(pb);
300 asf_st->ds_chunk_size = avio_rl16(pb);
301 avio_rl16(pb); //ds_data_size
302 avio_r8(pb); //ds_silence_data
304 //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
305 // asf_st->ds_packet_size, asf_st->ds_chunk_size,
306 // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
307 if (asf_st->ds_span > 1) {
308 if (!asf_st->ds_chunk_size
309 || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
310 || asf_st->ds_packet_size % asf_st->ds_chunk_size)
311 asf_st->ds_span = 0; // disable descrambling
313 switch (st->codec->codec_id) {
315 st->codec->frame_size = MPA_FRAME_SIZE;
317 case CODEC_ID_PCM_S16LE:
318 case CODEC_ID_PCM_S16BE:
319 case CODEC_ID_PCM_U16LE:
320 case CODEC_ID_PCM_U16BE:
321 case CODEC_ID_PCM_S8:
322 case CODEC_ID_PCM_U8:
323 case CODEC_ID_PCM_ALAW:
324 case CODEC_ID_PCM_MULAW:
325 st->codec->frame_size = 1;
328 /* This is probably wrong, but it prevents a crash later */
329 st->codec->frame_size = 1;
332 } else if (type == AVMEDIA_TYPE_VIDEO &&
333 size - (avio_tell(pb) - pos1 + 24) >= 51) {
337 avio_rl16(pb); /* size */
338 sizeX= avio_rl32(pb); /* size */
339 st->codec->width = avio_rl32(pb);
340 st->codec->height = avio_rl32(pb);
341 /* not available for asf */
342 avio_rl16(pb); /* panes */
343 st->codec->bits_per_coded_sample = avio_rl16(pb); /* depth */
344 tag1 = avio_rl32(pb);
346 // av_log(s, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX);
348 st->codec->extradata_size = sizeX - 40;
349 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
350 avio_read(pb, st->codec->extradata, st->codec->extradata_size);
353 /* Extract palette from extradata if bpp <= 8 */
354 /* This code assumes that extradata contains only palette */
355 /* This is true for all paletted codecs implemented in ffmpeg */
356 if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
358 st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
360 for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
361 st->codec->palctrl->palette[i] = av_bswap32(((uint32_t*)st->codec->extradata)[i]);
363 memcpy(st->codec->palctrl->palette, st->codec->extradata,
364 FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
366 st->codec->palctrl->palette_changed = 1;
369 st->codec->codec_tag = tag1;
370 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag1);
371 if(tag1 == MKTAG('D', 'V', 'R', ' ')){
372 st->need_parsing = AVSTREAM_PARSE_FULL;
373 // 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
375 st->codec->height = 0;
376 av_freep(&st->codec->extradata);
377 st->codec->extradata_size=0;
379 if(st->codec->codec_id == CODEC_ID_H264)
380 st->need_parsing = AVSTREAM_PARSE_FULL_ONCE;
382 pos2 = avio_tell(pb);
383 avio_skip(pb, size - (pos2 - pos1 + 24));
388 static int asf_read_ext_stream_properties(AVFormatContext *s, int64_t size)
390 ASFContext *asf = s->priv_data;
391 AVIOContext *pb = s->pb;
393 int ext_len, payload_ext_ct, stream_ct, i;
394 uint32_t ext_d, leak_rate, stream_num;
395 unsigned int stream_languageid_index;
397 avio_rl64(pb); // starttime
398 avio_rl64(pb); // endtime
399 leak_rate = avio_rl32(pb); // leak-datarate
400 avio_rl32(pb); // bucket-datasize
401 avio_rl32(pb); // init-bucket-fullness
402 avio_rl32(pb); // alt-leak-datarate
403 avio_rl32(pb); // alt-bucket-datasize
404 avio_rl32(pb); // alt-init-bucket-fullness
405 avio_rl32(pb); // max-object-size
406 avio_rl32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
407 stream_num = avio_rl16(pb); // stream-num
409 stream_languageid_index = avio_rl16(pb); // stream-language-id-index
410 if (stream_num < 128)
411 asf->streams[stream_num].stream_language_index = stream_languageid_index;
413 avio_rl64(pb); // avg frametime in 100ns units
414 stream_ct = avio_rl16(pb); //stream-name-count
415 payload_ext_ct = avio_rl16(pb); //payload-extension-system-count
417 if (stream_num < 128)
418 asf->stream_bitrates[stream_num] = leak_rate;
420 for (i=0; i<stream_ct; i++){
422 ext_len = avio_rl16(pb);
423 avio_skip(pb, ext_len);
426 for (i=0; i<payload_ext_ct; i++){
429 ext_len=avio_rl32(pb);
430 avio_skip(pb, ext_len);
436 static int asf_read_content_desc(AVFormatContext *s, int64_t size)
438 AVIOContext *pb = s->pb;
439 int len1, len2, len3, len4, len5;
441 len1 = avio_rl16(pb);
442 len2 = avio_rl16(pb);
443 len3 = avio_rl16(pb);
444 len4 = avio_rl16(pb);
445 len5 = avio_rl16(pb);
446 get_tag(s, "title" , 0, len1);
447 get_tag(s, "author" , 0, len2);
448 get_tag(s, "copyright", 0, len3);
449 get_tag(s, "comment" , 0, len4);
455 static int asf_read_ext_content_desc(AVFormatContext *s, int64_t size)
457 AVIOContext *pb = s->pb;
458 ASFContext *asf = s->priv_data;
459 int desc_count, i, ret;
461 desc_count = avio_rl16(pb);
462 for(i=0;i<desc_count;i++) {
463 int name_len,value_type,value_len;
466 name_len = avio_rl16(pb);
467 if (name_len%2) // must be even, broken lavf versions wrote len-1
469 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
470 avio_skip(pb, name_len - ret);
471 value_type = avio_rl16(pb);
472 value_len = avio_rl16(pb);
473 if (!value_type && value_len%2)
476 * My sample has that stream set to 0 maybe that mean the container.
477 * Asf stream count start at 1. I am using 0 to the container value since it's unused
479 if (!strcmp(name, "AspectRatioX")){
480 asf->dar[0].num= get_value(s->pb, value_type);
481 } else if(!strcmp(name, "AspectRatioY")){
482 asf->dar[0].den= get_value(s->pb, value_type);
484 get_tag(s, name, value_type, value_len);
490 static int asf_read_language_list(AVFormatContext *s, int64_t size)
492 AVIOContext *pb = s->pb;
493 ASFContext *asf = s->priv_data;
495 int stream_count = avio_rl16(pb);
496 for(j = 0; j < stream_count; j++) {
498 unsigned int lang_len = avio_r8(pb);
499 if ((ret = avio_get_str16le(pb, lang_len, lang, sizeof(lang))) < lang_len)
500 avio_skip(pb, lang_len - ret);
502 av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
508 static int asf_read_metadata(AVFormatContext *s, int64_t size)
510 AVIOContext *pb = s->pb;
511 ASFContext *asf = s->priv_data;
512 int n, stream_num, name_len, value_len, value_type, value_num;
519 avio_rl16(pb); //lang_list_index
520 stream_num= avio_rl16(pb);
521 name_len= avio_rl16(pb);
522 value_type= avio_rl16(pb);
523 value_len= avio_rl32(pb);
525 if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
526 avio_skip(pb, name_len - ret);
527 //av_log(s, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
528 value_num= avio_rl16(pb);//we should use get_value() here but it does not work 2 is le16 here but le32 elsewhere
529 avio_skip(pb, value_len - 2);
532 if (!strcmp(name, "AspectRatioX")) asf->dar[stream_num].num= value_num;
533 else if(!strcmp(name, "AspectRatioY")) asf->dar[stream_num].den= value_num;
540 static int asf_read_marker(AVFormatContext *s, int64_t size)
542 AVIOContext *pb = s->pb;
543 int i, count, name_len, ret;
546 avio_rl64(pb); // reserved 16 bytes
547 avio_rl64(pb); // ...
548 count = avio_rl32(pb); // markers count
549 avio_rl16(pb); // reserved 2 bytes
550 name_len = avio_rl16(pb); // name length
551 for(i=0;i<name_len;i++){
552 avio_r8(pb); // skip the name
555 for(i=0;i<count;i++){
559 avio_rl64(pb); // offset, 8 bytes
560 pres_time = avio_rl64(pb); // presentation time
561 avio_rl16(pb); // entry length
562 avio_rl32(pb); // send time
563 avio_rl32(pb); // flags
564 name_len = avio_rl32(pb); // name length
565 if ((ret = avio_get_str16le(pb, name_len * 2, name, sizeof(name))) < name_len)
566 avio_skip(pb, name_len - ret);
567 ff_new_chapter(s, i, (AVRational){1, 10000000}, pres_time, AV_NOPTS_VALUE, name );
573 static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
575 ASFContext *asf = s->priv_data;
577 AVIOContext *pb = s->pb;
582 if (ff_guidcmp(&g, &ff_asf_header))
588 memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
590 uint64_t gpos= avio_tell(pb);
592 gsize = avio_rl64(pb);
593 av_dlog(s, "%08"PRIx64": ", gpos);
595 av_dlog(s, " size=0x%"PRIx64"\n", gsize);
596 if (!ff_guidcmp(&g, &ff_asf_data_header)) {
597 asf->data_object_offset = avio_tell(pb);
598 // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
599 if (!(asf->hdr.flags & 0x01) && gsize >= 100) {
600 asf->data_object_size = gsize - 24;
602 asf->data_object_size = (uint64_t)-1;
608 if (!ff_guidcmp(&g, &ff_asf_file_header)) {
609 asf_read_file_properties(s, gsize);
610 } else if (!ff_guidcmp(&g, &ff_asf_stream_header)) {
611 asf_read_stream_properties(s, gsize);
612 } else if (!ff_guidcmp(&g, &ff_asf_comment_header)) {
613 asf_read_content_desc(s, gsize);
614 } else if (!ff_guidcmp(&g, &ff_asf_language_guid)) {
615 asf_read_language_list(s, gsize);
616 } else if (!ff_guidcmp(&g, &ff_asf_extended_content_header)) {
617 asf_read_ext_content_desc(s, gsize);
618 } else if (!ff_guidcmp(&g, &ff_asf_metadata_header)) {
619 asf_read_metadata(s, gsize);
620 } else if (!ff_guidcmp(&g, &ff_asf_ext_stream_header)) {
621 asf_read_ext_stream_properties(s, gsize);
623 // there could be a optional stream properties object to follow
624 // if so the next iteration will pick it up
626 } else if (!ff_guidcmp(&g, &ff_asf_head1_guid)) {
632 } else if (!ff_guidcmp(&g, &ff_asf_marker_header)) {
633 asf_read_marker(s, gsize);
634 } else if (url_feof(pb)) {
638 if (!ff_guidcmp(&g, &ff_asf_content_encryption)) {
639 av_log(s, AV_LOG_WARNING, "DRM protected stream detected, decoding will likely fail!\n");
640 } else if (!ff_guidcmp(&g, &ff_asf_ext_content_encryption)) {
641 av_log(s, AV_LOG_WARNING, "Ext DRM protected stream detected, decoding will likely fail!\n");
642 } else if (!ff_guidcmp(&g, &ff_asf_digital_signature)) {
643 av_log(s, AV_LOG_WARNING, "Digital signature detected, decoding will likely fail!\n");
647 if(avio_tell(pb) != gpos + gsize)
648 av_log(s, AV_LOG_DEBUG, "gpos mismatch our pos=%"PRIu64", end=%"PRIu64"\n", avio_tell(pb)-gpos, gsize);
649 avio_seek(pb, gpos + gsize, SEEK_SET);
657 asf->data_offset = avio_tell(pb);
658 asf->packet_size_left = 0;
661 for(i=0; i<128; i++){
662 int stream_num= asf->asfid2avid[i];
664 AVStream *st = s->streams[stream_num];
665 if (!st->codec->bit_rate)
666 st->codec->bit_rate = asf->stream_bitrates[i];
667 if (asf->dar[i].num > 0 && asf->dar[i].den > 0){
668 av_reduce(&st->sample_aspect_ratio.num,
669 &st->sample_aspect_ratio.den,
670 asf->dar[i].num, asf->dar[i].den, INT_MAX);
671 } 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.
672 av_reduce(&st->sample_aspect_ratio.num,
673 &st->sample_aspect_ratio.den,
674 asf->dar[0].num, asf->dar[0].den, INT_MAX);
676 //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);
678 // copy and convert language codes to the frontend
679 if (asf->streams[i].stream_language_index < 128) {
680 const char *rfc1766 = asf->stream_languages[asf->streams[i].stream_language_index];
681 if (rfc1766 && strlen(rfc1766) > 1) {
682 const char primary_tag[3] = { rfc1766[0], rfc1766[1], '\0' }; // ignore country code if any
683 const char *iso6392 = av_convert_lang_to(primary_tag, AV_LANG_ISO639_2_BIBL);
685 av_metadata_set2(&st->metadata, "language", iso6392, 0);
691 ff_metadata_conv(&s->metadata, NULL, ff_asf_metadata_conv);
696 #define DO_2BITS(bits, var, defval) \
699 case 3: var = avio_rl32(pb); rsize += 4; break; \
700 case 2: var = avio_rl16(pb); rsize += 2; break; \
701 case 1: var = avio_r8(pb); rsize++; break; \
702 default: var = defval; break; \
706 * Load a single ASF packet into the demuxer.
707 * @param s demux context
708 * @param pb context to read data from
709 * @return 0 on success, <0 on error
711 static int ff_asf_get_packet(AVFormatContext *s, AVIOContext *pb)
713 ASFContext *asf = s->priv_data;
714 uint32_t packet_length, padsize;
718 // if we do not know packet size, allow skipping up to 32 kB
720 if (s->packet_size > 0)
721 off= (avio_tell(pb) - s->data_offset) % s->packet_size + 3;
727 if(c == 0x82 && !d && !e)
733 * This code allows handling of -EAGAIN at packet boundaries (i.e.
734 * if the packet sync code above triggers -EAGAIN). This does not
735 * imply complete -EAGAIN handling support at random positions in
738 if (pb->error == AVERROR(EAGAIN))
739 return AVERROR(EAGAIN);
741 av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, avio_tell(pb));
743 if ((c & 0x8f) == 0x82) {
746 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
753 avio_seek(pb, -1, SEEK_CUR); //FIXME
756 asf->packet_flags = c;
757 asf->packet_property = d;
759 DO_2BITS(asf->packet_flags >> 5, packet_length, s->packet_size);
760 DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
761 DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
763 //the following checks prevent overflows and infinite loops
764 if(!packet_length || packet_length >= (1U<<29)){
765 av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, avio_tell(pb));
768 if(padsize >= packet_length){
769 av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, avio_tell(pb));
773 asf->packet_timestamp = avio_rl32(pb);
774 avio_rl16(pb); /* duration */
775 // rsize has at least 11 bytes which have to be present
777 if (asf->packet_flags & 0x01) {
778 asf->packet_segsizetype = avio_r8(pb); rsize++;
779 asf->packet_segments = asf->packet_segsizetype & 0x3f;
781 asf->packet_segments = 1;
782 asf->packet_segsizetype = 0x80;
784 asf->packet_size_left = packet_length - padsize - rsize;
785 if (packet_length < asf->hdr.min_pktsize)
786 padsize += asf->hdr.min_pktsize - packet_length;
787 asf->packet_padsize = padsize;
788 av_dlog(s, "packet: size=%d padsize=%d left=%d\n", s->packet_size, asf->packet_padsize, asf->packet_size_left);
794 * @return <0 if error
796 static int asf_read_frame_header(AVFormatContext *s, AVIOContext *pb){
797 ASFContext *asf = s->priv_data;
799 int num = avio_r8(pb);
802 asf->packet_segments--;
803 asf->packet_key_frame = num >> 7;
804 asf->stream_index = asf->asfid2avid[num & 0x7f];
805 // sequence should be ignored!
806 DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
807 DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
808 DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
809 //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);
810 if (asf->packet_replic_size >= 8) {
811 asf->packet_obj_size = avio_rl32(pb);
812 if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
813 av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
816 asf->packet_frag_timestamp = avio_rl32(pb); // timestamp
817 if(asf->packet_replic_size >= 8+38+4){
818 // for(i=0; i<asf->packet_replic_size-8; i++)
819 // av_log(s, AV_LOG_DEBUG, "%02X ",avio_r8(pb));
820 // av_log(s, AV_LOG_DEBUG, "\n");
826 avio_skip(pb, asf->packet_replic_size - 8 - 38 - 4);
827 if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000;
828 else asf->packet_frag_timestamp= AV_NOPTS_VALUE;
830 avio_skip(pb, asf->packet_replic_size - 8);
831 rsize += asf->packet_replic_size; // FIXME - check validity
832 } else if (asf->packet_replic_size==1){
833 // multipacket - frag_offset is beginning timestamp
834 asf->packet_time_start = asf->packet_frag_offset;
835 asf->packet_frag_offset = 0;
836 asf->packet_frag_timestamp = asf->packet_timestamp;
838 asf->packet_time_delta = avio_r8(pb);
840 }else if(asf->packet_replic_size!=0){
841 av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
844 if (asf->packet_flags & 0x01) {
845 DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
846 if(asf->packet_frag_size > asf->packet_size_left - rsize){
847 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid\n");
850 //printf("Fragsize %d\n", asf->packet_frag_size);
852 asf->packet_frag_size = asf->packet_size_left - rsize;
853 //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
855 if (asf->packet_replic_size == 1) {
856 asf->packet_multi_size = asf->packet_frag_size;
857 if (asf->packet_multi_size > asf->packet_size_left)
860 asf->packet_size_left -= rsize;
861 //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
867 * Parse data from individual ASF packets (which were previously loaded
868 * with asf_get_packet()).
869 * @param s demux context
870 * @param pb context to read data from
871 * @param pkt pointer to store packet data into
872 * @return 0 if data was stored in pkt, <0 on error or 1 if more ASF
873 * packets need to be loaded (through asf_get_packet())
875 static int ff_asf_parse_packet(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
877 ASFContext *asf = s->priv_data;
878 ASFStream *asf_st = 0;
883 if (asf->packet_size_left < FRAME_HEADER_SIZE
884 || asf->packet_segments < 1) {
885 //asf->packet_size_left <= asf->packet_padsize) {
886 int ret = asf->packet_size_left + asf->packet_padsize;
887 //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, avio_tell(pb));
892 asf->packet_pos= avio_tell(pb);
893 if (asf->data_object_size != (uint64_t)-1 &&
894 (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
895 return AVERROR_EOF; /* Do not exceed the size of the data object */
898 if (asf->packet_time_start == 0) {
899 if(asf_read_frame_header(s, pb) < 0){
900 asf->packet_segments= 0;
903 if (asf->stream_index < 0
904 || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
905 || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
907 asf->packet_time_start = 0;
908 /* unhandled packet (should not happen) */
909 avio_skip(pb, asf->packet_frag_size);
910 asf->packet_size_left -= asf->packet_frag_size;
911 if(asf->stream_index < 0)
912 av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
915 asf->asf_st = s->streams[asf->stream_index]->priv_data;
917 asf_st = asf->asf_st;
919 if (asf->packet_replic_size == 1) {
920 // frag_offset is here used as the beginning timestamp
921 asf->packet_frag_timestamp = asf->packet_time_start;
922 asf->packet_time_start += asf->packet_time_delta;
923 asf->packet_obj_size = asf->packet_frag_size = avio_r8(pb);
924 asf->packet_size_left--;
925 asf->packet_multi_size--;
926 if (asf->packet_multi_size < asf->packet_obj_size)
928 asf->packet_time_start = 0;
929 avio_skip(pb, asf->packet_multi_size);
930 asf->packet_size_left -= asf->packet_multi_size;
933 asf->packet_multi_size -= asf->packet_obj_size;
934 //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);
936 if( /*asf->packet_frag_size == asf->packet_obj_size*/
937 asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size
938 && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){
939 av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n",
940 asf_st->frag_offset, asf->packet_frag_size,
941 asf->packet_obj_size, asf_st->pkt.size);
942 asf->packet_obj_size= asf_st->pkt.size;
945 if ( asf_st->pkt.size != asf->packet_obj_size
946 || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient?
947 if(asf_st->pkt.data){
948 av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
949 asf_st->frag_offset = 0;
950 av_free_packet(&asf_st->pkt);
953 av_new_packet(&asf_st->pkt, asf->packet_obj_size);
954 asf_st->seq = asf->packet_seq;
955 asf_st->pkt.dts = asf->packet_frag_timestamp - asf->hdr.preroll;
956 asf_st->pkt.stream_index = asf->stream_index;
958 asf_st->packet_pos= asf->packet_pos;
959 //printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
960 //asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & AV_PKT_FLAG_KEY,
961 //s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO, asf->packet_obj_size);
962 if (s->streams[asf->stream_index]->codec->codec_type == AVMEDIA_TYPE_AUDIO)
963 asf->packet_key_frame = 1;
964 if (asf->packet_key_frame)
965 asf_st->pkt.flags |= AV_PKT_FLAG_KEY;
969 //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n",
970 // s->packet_size, asf_st->pkt.size, asf->packet_frag_offset,
971 // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data);
972 asf->packet_size_left -= asf->packet_frag_size;
973 if (asf->packet_size_left < 0)
976 if( asf->packet_frag_offset >= asf_st->pkt.size
977 || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
978 av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
979 asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
983 ret = avio_read(pb, asf_st->pkt.data + asf->packet_frag_offset,
984 asf->packet_frag_size);
985 if (ret != asf->packet_frag_size) {
986 if (ret < 0 || asf->packet_frag_offset + ret == 0)
987 return ret < 0 ? ret : AVERROR_EOF;
988 if (asf_st->ds_span > 1) {
989 // scrambling, we can either drop it completely or fill the remainder
990 // TODO: should we fill the whole packet instead of just the current
992 memset(asf_st->pkt.data + asf->packet_frag_offset + ret, 0,
993 asf->packet_frag_size - ret);
994 ret = asf->packet_frag_size;
996 // no scrambling, so we can return partial packets
997 av_shrink_packet(&asf_st->pkt, asf->packet_frag_offset + ret);
999 if (s->key && s->keylen == 20)
1000 ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset,
1002 asf_st->frag_offset += ret;
1003 /* test if whole packet is read */
1004 if (asf_st->frag_offset == asf_st->pkt.size) {
1005 //workaround for macroshit radio DVR-MS files
1006 if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO
1007 && asf_st->pkt.size > 100){
1009 for(i=0; i<asf_st->pkt.size && !asf_st->pkt.data[i]; i++);
1010 if(i == asf_st->pkt.size){
1011 av_log(s, AV_LOG_DEBUG, "discarding ms fart\n");
1012 asf_st->frag_offset = 0;
1013 av_free_packet(&asf_st->pkt);
1019 if (asf_st->ds_span > 1) {
1020 if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
1021 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);
1023 /* packet descrambling */
1024 uint8_t *newdata = av_malloc(asf_st->pkt.size + FF_INPUT_BUFFER_PADDING_SIZE);
1027 memset(newdata + asf_st->pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
1028 while (offset < asf_st->pkt.size) {
1029 int off = offset / asf_st->ds_chunk_size;
1030 int row = off / asf_st->ds_span;
1031 int col = off % asf_st->ds_span;
1032 int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
1033 //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
1035 assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
1036 assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
1037 memcpy(newdata + offset,
1038 asf_st->pkt.data + idx * asf_st->ds_chunk_size,
1039 asf_st->ds_chunk_size);
1040 offset += asf_st->ds_chunk_size;
1042 av_free(asf_st->pkt.data);
1043 asf_st->pkt.data = newdata;
1047 asf_st->frag_offset = 0;
1049 //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
1050 asf_st->pkt.size = 0;
1051 asf_st->pkt.data = 0;
1052 break; // packet completed
1058 static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
1060 ASFContext *asf = s->priv_data;
1065 /* parse cached packets, if any */
1066 if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0)
1068 if ((ret = ff_asf_get_packet(s, s->pb)) < 0)
1069 assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
1070 asf->packet_time_start = 0;
1076 // Added to support seeking after packets have been read
1077 // If information is not reset, read_packet fails due to
1078 // leftover information from previous reads
1079 static void asf_reset_header(AVFormatContext *s)
1081 ASFContext *asf = s->priv_data;
1085 asf->packet_size_left = 0;
1086 asf->packet_segments = 0;
1087 asf->packet_flags = 0;
1088 asf->packet_property = 0;
1089 asf->packet_timestamp = 0;
1090 asf->packet_segsizetype = 0;
1091 asf->packet_segments = 0;
1092 asf->packet_seq = 0;
1093 asf->packet_replic_size = 0;
1094 asf->packet_key_frame = 0;
1095 asf->packet_padsize = 0;
1096 asf->packet_frag_offset = 0;
1097 asf->packet_frag_size = 0;
1098 asf->packet_frag_timestamp = 0;
1099 asf->packet_multi_size = 0;
1100 asf->packet_obj_size = 0;
1101 asf->packet_time_delta = 0;
1102 asf->packet_time_start = 0;
1104 for(i=0; i<s->nb_streams; i++){
1105 asf_st= s->streams[i]->priv_data;
1106 av_free_packet(&asf_st->pkt);
1107 asf_st->frag_offset=0;
1113 static int asf_read_close(AVFormatContext *s)
1117 asf_reset_header(s);
1118 for(i=0;i<s->nb_streams;i++) {
1119 AVStream *st = s->streams[i];
1120 av_free(st->codec->palctrl);
1125 static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
1127 AVPacket pkt1, *pkt = &pkt1;
1132 int64_t start_pos[ASF_MAX_STREAMS];
1134 for(i=0; i<s->nb_streams; i++){
1138 if (s->packet_size > 0)
1139 pos= (pos+s->packet_size-1-s->data_offset)/s->packet_size*s->packet_size+ s->data_offset;
1141 avio_seek(s->pb, pos, SEEK_SET);
1143 //printf("asf_read_pts\n");
1144 asf_reset_header(s);
1146 if (av_read_frame(s, pkt) < 0){
1147 av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
1148 return AV_NOPTS_VALUE;
1153 av_free_packet(pkt);
1154 if(pkt->flags&AV_PKT_FLAG_KEY){
1155 i= pkt->stream_index;
1157 asf_st= s->streams[i]->priv_data;
1159 // assert((asf_st->packet_pos - s->data_offset) % s->packet_size == 0);
1160 pos= asf_st->packet_pos;
1162 av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
1163 start_pos[i]= asf_st->packet_pos + 1;
1165 if(pkt->stream_index == stream_index)
1171 //printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
1176 static void asf_build_simple_index(AVFormatContext *s, int stream_index)
1179 ASFContext *asf = s->priv_data;
1180 int64_t current_pos= avio_tell(s->pb);
1183 avio_seek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
1184 ff_get_guid(s->pb, &g);
1186 /* the data object can be followed by other top-level objects,
1187 skip them until the simple index object is reached */
1188 while (ff_guidcmp(&g, &index_guid)) {
1189 int64_t gsize= avio_rl64(s->pb);
1190 if (gsize < 24 || url_feof(s->pb)) {
1191 avio_seek(s->pb, current_pos, SEEK_SET);
1194 avio_skip(s->pb, gsize-24);
1195 ff_get_guid(s->pb, &g);
1199 int64_t itime, last_pos=-1;
1201 int64_t av_unused gsize= avio_rl64(s->pb);
1202 ff_get_guid(s->pb, &g);
1203 itime=avio_rl64(s->pb);
1204 pct=avio_rl32(s->pb);
1205 ict=avio_rl32(s->pb);
1206 av_log(s, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
1208 for (i=0;i<ict;i++){
1209 int pktnum=avio_rl32(s->pb);
1210 int pktct =avio_rl16(s->pb);
1211 int64_t pos = s->data_offset + s->packet_size*(int64_t)pktnum;
1212 int64_t index_pts= FFMAX(av_rescale(itime, i, 10000) - asf->hdr.preroll, 0);
1214 if(pos != last_pos){
1215 av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d pts: %"PRId64"\n", pktnum, pktct, index_pts);
1216 av_add_index_entry(s->streams[stream_index], pos, index_pts, s->packet_size, 0, AVINDEX_KEYFRAME);
1222 avio_seek(s->pb, current_pos, SEEK_SET);
1225 static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
1227 ASFContext *asf = s->priv_data;
1228 AVStream *st = s->streams[stream_index];
1232 if (s->packet_size <= 0)
1235 /* Try using the protocol's read_seek if available */
1237 int ret = avio_seek_time(s->pb, stream_index, pts, flags);
1239 asf_reset_header(s);
1240 if (ret != AVERROR(ENOSYS))
1244 if (!asf->index_read)
1245 asf_build_simple_index(s, stream_index);
1247 if(!(asf->index_read && st->index_entries)){
1248 if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
1251 index= av_index_search_timestamp(st, pts, flags);
1255 /* find the position */
1256 pos = st->index_entries[index].pos;
1258 // various attempts to find key frame have failed so far
1259 // asf_reset_header(s);
1260 // avio_seek(s->pb, pos, SEEK_SET);
1262 // for(i=0;i<16;i++){
1263 // pos = avio_tell(s->pb);
1264 // if (av_read_frame(s, &pkt) < 0){
1265 // av_log(s, AV_LOG_INFO, "seek failed\n");
1268 // asf_st = s->streams[stream_index]->priv_data;
1269 // pos += st->parser->frame_offset;
1271 // if (pkt.size > b) {
1276 // av_free_packet(&pkt);
1280 av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
1281 avio_seek(s->pb, pos, SEEK_SET);
1283 asf_reset_header(s);
1287 AVInputFormat ff_asf_demuxer = {
1289 NULL_IF_CONFIG_SMALL("ASF format"),