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
30 #define ASF_INDEXED_INTERVAL 10000000
31 #define ASF_INDEX_BLOCK 600
33 #define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
34 #define ASF_PACKET_ERROR_CORRECTION_FLAGS (\
35 ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
36 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE\
39 #if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0)
40 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1
42 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0
45 #define ASF_PPI_PROPERTY_FLAGS (\
46 ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \
47 ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \
48 ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \
49 ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE \
52 #define ASF_PPI_LENGTH_TYPE_FLAGS 0
54 #define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD
56 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
57 # define ASF_PPI_SEQUENCE_FIELD_SIZE 1
59 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
60 # define ASF_PPI_SEQUENCE_FIELD_SIZE 2
62 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
63 # define ASF_PPI_SEQUENCE_FIELD_SIZE 4
65 #ifndef ASF_PPI_SEQUENCE_FIELD_SIZE
66 # define ASF_PPI_SEQUENCE_FIELD_SIZE 0
70 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
71 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 1
73 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
74 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 2
76 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
77 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 4
79 #ifndef ASF_PPI_PACKET_LENGTH_FIELD_SIZE
80 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 0
83 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
84 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 1
86 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
87 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 2
89 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
90 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 4
92 #ifndef ASF_PPI_PADDING_LENGTH_FIELD_SIZE
93 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 0
96 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
97 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 1
99 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
100 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 2
102 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
103 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 4
105 #ifndef ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE
106 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 0
109 #if (ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE))
110 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 1
112 #if (ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE))
113 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 2
115 #if (ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE))
116 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 4
118 #ifndef ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE
119 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 0
122 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
123 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 1
125 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
126 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 2
128 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
129 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 4
131 #ifndef ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE
132 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 0
135 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
136 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 1
138 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
139 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 2
141 #ifndef ASF_PAYLOAD_LENGTH_FIELD_SIZE
142 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 0
145 #define PACKET_HEADER_MIN_SIZE (\
146 ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE + \
147 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE + \
148 1 + /*Length Type Flags*/ \
149 1 + /*Property Flags*/ \
150 ASF_PPI_PACKET_LENGTH_FIELD_SIZE + \
151 ASF_PPI_SEQUENCE_FIELD_SIZE + \
152 ASF_PPI_PADDING_LENGTH_FIELD_SIZE + \
153 4 + /*Send Time Field*/ \
154 2 /*Duration Field*/ \
158 // Replicated Data shall be at least 8 bytes long.
159 #define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08
161 #define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD (\
162 1 + /*Stream Number*/ \
163 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
164 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
165 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
166 ASF_PAYLOAD_REPLICATED_DATA_LENGTH \
169 #define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS (\
170 1 + /*Stream Number*/ \
171 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
172 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
173 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
174 ASF_PAYLOAD_REPLICATED_DATA_LENGTH + \
175 ASF_PAYLOAD_LENGTH_FIELD_SIZE \
178 #define SINGLE_PAYLOAD_DATA_LENGTH (\
180 PACKET_HEADER_MIN_SIZE - \
181 PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \
184 #define MULTI_PAYLOAD_CONSTANT (\
186 PACKET_HEADER_MIN_SIZE - \
187 1 - /*Payload Flags*/ \
188 2*PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \
191 static const AVCodecTag codec_asf_bmp_tags[] = {
192 { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
193 { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
194 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
195 { CODEC_ID_NONE, 0 },
198 #define PREROLL_TIME 3100
200 static void put_guid(ByteIOContext *s, const ff_asf_guid *g)
202 assert(sizeof(*g) == 16);
203 put_buffer(s, *g, sizeof(*g));
206 static void put_str16(ByteIOContext *s, const char *tag)
210 ByteIOContext *dyn_buf;
211 if (url_open_dyn_buf(&dyn_buf) < 0)
214 ff_put_str16_nolen(dyn_buf, tag);
215 len = url_close_dyn_buf(dyn_buf, &pb);
217 put_buffer(s, pb, len);
221 static int64_t put_header(ByteIOContext *pb, const ff_asf_guid *g)
231 /* update header size */
232 static void end_header(ByteIOContext *pb, int64_t pos)
236 pos1 = url_ftell(pb);
237 url_fseek(pb, pos + 16, SEEK_SET);
238 put_le64(pb, pos1 - pos);
239 url_fseek(pb, pos1, SEEK_SET);
242 /* write an asf chunk (only used in streaming case) */
243 static void put_chunk(AVFormatContext *s, int type, int payload_length, int flags)
245 ASFContext *asf = s->priv_data;
246 ByteIOContext *pb = s->pb;
249 length = payload_length + 8;
251 put_le16(pb, length); //size
252 put_le32(pb, asf->seqno);//sequence number
253 put_le16(pb, flags); /* unknown bytes */
254 put_le16(pb, length); //size_confirm
258 /* convert from unix to windows time */
259 static int64_t unix_to_file_time(int ti)
263 t = ti * INT64_C(10000000);
264 t += INT64_C(116444736000000000);
268 /* write the header (used two times if non streamed) */
269 static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size)
271 ASFContext *asf = s->priv_data;
272 ByteIOContext *pb = s->pb;
273 AVMetadataTag *tags[5];
274 int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
278 int64_t header_offset, cur_pos, hpos;
282 tags[0] = av_metadata_get(s->metadata, "title" , NULL, 0);
283 tags[1] = av_metadata_get(s->metadata, "author" , NULL, 0);
284 tags[2] = av_metadata_get(s->metadata, "copyright", NULL, 0);
285 tags[3] = av_metadata_get(s->metadata, "comment" , NULL, 0);
286 tags[4] = av_metadata_get(s->metadata, "rating" , NULL, 0);
288 duration = asf->duration + PREROLL_TIME * 10000;
289 has_title = tags[0] || tags[1] || tags[2] || tags[3] || tags[4];
290 metadata_count = s->metadata ? s->metadata->count : 0;
293 for(n=0;n<s->nb_streams;n++) {
294 enc = s->streams[n]->codec;
296 av_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
298 bit_rate += enc->bit_rate;
301 if (asf->is_streamed) {
302 put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
305 put_guid(pb, &ff_asf_header);
306 put_le64(pb, -1); /* header length, will be patched after */
307 put_le32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */
308 put_byte(pb, 1); /* ??? */
309 put_byte(pb, 2); /* ??? */
312 header_offset = url_ftell(pb);
313 hpos = put_header(pb, &ff_asf_file_header);
314 put_guid(pb, &ff_asf_my_guid);
315 put_le64(pb, file_size);
317 put_le64(pb, unix_to_file_time(file_time));
318 put_le64(pb, asf->nb_packets); /* number of packets */
319 put_le64(pb, duration); /* end time stamp (in 100ns units) */
320 put_le64(pb, asf->duration); /* duration (in 100ns units) */
321 put_le64(pb, PREROLL_TIME); /* start time stamp */
322 put_le32(pb, (asf->is_streamed || url_is_streamed(pb)) ? 3 : 2); /* ??? */
323 put_le32(pb, s->packet_size); /* packet size */
324 put_le32(pb, s->packet_size); /* packet size */
325 put_le32(pb, bit_rate); /* Nominal data rate in bps */
326 end_header(pb, hpos);
328 /* unknown headers */
329 hpos = put_header(pb, &ff_asf_head1_guid);
330 put_guid(pb, &ff_asf_head2_guid);
333 end_header(pb, hpos);
335 /* title and other infos */
339 ByteIOContext *dyn_buf;
341 if (url_open_dyn_buf(&dyn_buf) < 0)
342 return AVERROR(ENOMEM);
344 hpos = put_header(pb, &ff_asf_comment_header);
346 for (n = 0; n < FF_ARRAY_ELEMS(tags); n++) {
347 len = tags[n] ? ff_put_str16_nolen(dyn_buf, tags[n]->value) : 0;
350 len = url_close_dyn_buf(dyn_buf, &buf);
351 put_buffer(pb, buf, len);
353 end_header(pb, hpos);
355 if (metadata_count) {
356 AVMetadataTag *tag = NULL;
357 hpos = put_header(pb, &ff_asf_extended_content_header);
358 put_le16(pb, metadata_count);
359 while ((tag = av_metadata_get(s->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX))) {
360 put_str16(pb, tag->key);
362 put_str16(pb, tag->value);
364 end_header(pb, hpos);
368 for(n=0;n<s->nb_streams;n++) {
370 // ASFStream *stream = &asf->streams[n];
372 enc = s->streams[n]->codec;
373 asf->streams[n].num = n + 1;
374 asf->streams[n].seq = 0;
377 switch(enc->codec_type) {
378 case AVMEDIA_TYPE_AUDIO:
380 extra_size = 18 + wav_extra_size;
384 case AVMEDIA_TYPE_VIDEO:
385 wav_extra_size = enc->extradata_size;
386 extra_size = 0x33 + wav_extra_size;
391 hpos = put_header(pb, &ff_asf_stream_header);
392 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
393 put_guid(pb, &ff_asf_audio_stream);
394 put_guid(pb, &ff_asf_audio_conceal_spread);
396 put_guid(pb, &ff_asf_video_stream);
397 put_guid(pb, &ff_asf_video_conceal_none);
399 put_le64(pb, 0); /* ??? */
400 es_pos = url_ftell(pb);
401 put_le32(pb, extra_size); /* wav header len */
402 put_le32(pb, extra_size2); /* additional data len */
403 put_le16(pb, n + 1); /* stream number */
404 put_le32(pb, 0); /* ??? */
406 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
407 /* WAVEFORMATEX header */
408 int wavsize = ff_put_wav_header(pb, enc);
409 if ((enc->codec_id != CODEC_ID_MP3) && (enc->codec_id != CODEC_ID_MP2) && (enc->codec_id != CODEC_ID_ADPCM_IMA_WAV) && (enc->extradata_size==0)) {
416 if (wavsize != extra_size) {
417 cur_pos = url_ftell(pb);
418 url_fseek(pb, es_pos, SEEK_SET);
419 put_le32(pb, wavsize); /* wav header len */
420 url_fseek(pb, cur_pos, SEEK_SET);
422 /* ERROR Correction */
424 if(enc->codec_id == CODEC_ID_ADPCM_G726 || !enc->block_align){
425 put_le16(pb, 0x0190);
426 put_le16(pb, 0x0190);
428 put_le16(pb, enc->block_align);
429 put_le16(pb, enc->block_align);
434 put_le32(pb, enc->width);
435 put_le32(pb, enc->height);
436 put_byte(pb, 2); /* ??? */
437 put_le16(pb, 40 + enc->extradata_size); /* size */
439 /* BITMAPINFOHEADER header */
440 ff_put_bmp_header(pb, enc, ff_codec_bmp_tags, 1);
442 end_header(pb, hpos);
447 hpos = put_header(pb, &ff_asf_codec_comment_header);
448 put_guid(pb, &ff_asf_codec_comment1_header);
449 put_le32(pb, s->nb_streams);
450 for(n=0;n<s->nb_streams;n++) {
455 ByteIOContext *dyn_buf;
457 enc = s->streams[n]->codec;
458 p = avcodec_find_encoder(enc->codec_id);
460 if(enc->codec_type == AVMEDIA_TYPE_AUDIO)
462 else if(enc->codec_type == AVMEDIA_TYPE_VIDEO)
467 if(enc->codec_id == CODEC_ID_WMAV2)
468 desc = "Windows Media Audio V8";
470 desc = p ? p->name : enc->codec_name;
472 if ( url_open_dyn_buf(&dyn_buf) < 0)
473 return AVERROR(ENOMEM);
475 ff_put_str16_nolen(dyn_buf, desc);
476 len = url_close_dyn_buf(dyn_buf, &buf);
477 put_le16(pb, len / 2); // "number of characters" = length in bytes / 2
479 put_buffer(pb, buf, len);
482 put_le16(pb, 0); /* no parameters */
486 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
488 put_le16(pb, enc->codec_tag);
491 put_le32(pb, enc->codec_tag);
496 end_header(pb, hpos);
498 /* patch the header size fields */
500 cur_pos = url_ftell(pb);
501 header_size = cur_pos - header_offset;
502 if (asf->is_streamed) {
503 header_size += 8 + 30 + 50;
505 url_fseek(pb, header_offset - 10 - 30, SEEK_SET);
506 put_le16(pb, header_size);
507 url_fseek(pb, header_offset - 2 - 30, SEEK_SET);
508 put_le16(pb, header_size);
510 header_size -= 8 + 30 + 50;
512 header_size += 24 + 6;
513 url_fseek(pb, header_offset - 14, SEEK_SET);
514 put_le64(pb, header_size);
515 url_fseek(pb, cur_pos, SEEK_SET);
517 /* movie chunk, followed by packets of packet_size */
518 asf->data_offset = cur_pos;
519 put_guid(pb, &ff_asf_data_header);
520 put_le64(pb, data_chunk_size);
521 put_guid(pb, &ff_asf_my_guid);
522 put_le64(pb, asf->nb_packets); /* nb packets */
523 put_byte(pb, 1); /* ??? */
524 put_byte(pb, 1); /* ??? */
528 static int asf_write_header(AVFormatContext *s)
530 ASFContext *asf = s->priv_data;
532 s->packet_size = PACKET_SIZE;
535 asf->last_indexed_pts = 0;
536 asf->index_ptr = av_malloc( sizeof(ASFIndex) * ASF_INDEX_BLOCK );
537 asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
538 asf->nb_index_count = 0;
539 asf->maximum_packet = 0;
541 /* the data-chunk-size has to be 50, which is data_size - asf->data_offset
542 * at the moment this function is done. It is needed to use asf as
543 * streamable format. */
544 if (asf_write_header1(s, 0, 50) < 0) {
549 put_flush_packet(s->pb);
551 asf->packet_nb_payloads = 0;
552 asf->packet_timestamp_start = -1;
553 asf->packet_timestamp_end = -1;
554 init_put_byte(&asf->pb, asf->packet_buf, s->packet_size, 1,
555 NULL, NULL, NULL, NULL);
560 static int asf_write_stream_header(AVFormatContext *s)
562 ASFContext *asf = s->priv_data;
564 asf->is_streamed = 1;
566 return asf_write_header(s);
569 static int put_payload_parsing_info(
571 unsigned int sendtime,
572 unsigned int duration,
577 ASFContext *asf = s->priv_data;
578 ByteIOContext *pb = s->pb;
580 int64_t start= url_ftell(pb);
582 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
584 padsize -= PACKET_HEADER_MIN_SIZE;
585 if(asf->multi_payloads_present)
589 put_byte(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
590 for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++){
594 if (asf->multi_payloads_present)
595 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
599 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
601 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
603 put_byte(pb, iLengthTypeFlags);
605 put_byte(pb, ASF_PPI_PROPERTY_FLAGS);
607 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
608 put_le16(pb, padsize - 2);
609 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
610 put_byte(pb, padsize - 1);
612 put_le32(pb, sendtime);
613 put_le16(pb, duration);
614 if (asf->multi_payloads_present)
615 put_byte(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
617 ppi_size = url_ftell(pb) - start;
622 static void flush_packet(AVFormatContext *s)
624 ASFContext *asf = s->priv_data;
625 int packet_hdr_size, packet_filled_size;
627 assert(asf->packet_timestamp_end >= asf->packet_timestamp_start);
629 if (asf->is_streamed) {
630 put_chunk(s, 0x4424, s->packet_size, 0);
633 packet_hdr_size = put_payload_parsing_info(
635 asf->packet_timestamp_start,
636 asf->packet_timestamp_end - asf->packet_timestamp_start,
637 asf->packet_nb_payloads,
638 asf->packet_size_left
641 packet_filled_size = PACKET_SIZE - asf->packet_size_left;
642 assert(packet_hdr_size <= asf->packet_size_left);
643 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
645 put_buffer(s->pb, asf->packet_buf, s->packet_size - packet_hdr_size);
647 put_flush_packet(s->pb);
649 asf->packet_nb_payloads = 0;
650 asf->packet_timestamp_start = -1;
651 asf->packet_timestamp_end = -1;
652 init_put_byte(&asf->pb, asf->packet_buf, s->packet_size, 1,
653 NULL, NULL, NULL, NULL);
656 static void put_payload_header(
659 int presentation_time,
666 ASFContext *asf = s->priv_data;
667 ByteIOContext *pb = &asf->pb;
671 if (flags & AV_PKT_FLAG_KEY)
672 val |= ASF_PL_FLAG_KEY_FRAME;
675 put_byte(pb, stream->seq); //Media object number
676 put_le32(pb, m_obj_offset); //Offset Into Media Object
678 // Replicated Data shall be at least 8 bytes long.
679 // The first 4 bytes of data shall contain the
680 // Size of the Media Object that the payload belongs to.
681 // The next 4 bytes of data shall contain the
682 // Presentation Time for the media object that the payload belongs to.
683 put_byte(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
685 put_le32(pb, m_obj_size); //Replicated Data - Media Object Size
686 put_le32(pb, presentation_time);//Replicated Data - Presentation Time
688 if (asf->multi_payloads_present){
689 put_le16(pb, payload_len); //payload length
693 static void put_frame(
703 ASFContext *asf = s->priv_data;
704 int m_obj_offset, payload_len, frag_len1;
707 while (m_obj_offset < m_obj_size) {
708 payload_len = m_obj_size - m_obj_offset;
709 if (asf->packet_timestamp_start == -1) {
710 asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT);
712 asf->packet_size_left = PACKET_SIZE;
713 if (asf->multi_payloads_present){
714 frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
717 frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
719 asf->packet_timestamp_start = timestamp;
723 frag_len1 = asf->packet_size_left - PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS - PACKET_HEADER_MIN_SIZE - 1;
725 if(frag_len1 < payload_len && avst->codec->codec_type == AVMEDIA_TYPE_AUDIO){
731 if (payload_len > frag_len1)
732 payload_len = frag_len1;
733 else if (payload_len == (frag_len1 - 1))
734 payload_len = frag_len1 - 2; //additional byte need to put padding length
736 put_payload_header(s, stream, timestamp+PREROLL_TIME, m_obj_size, m_obj_offset, payload_len, flags);
737 put_buffer(&asf->pb, buf, payload_len);
739 if (asf->multi_payloads_present)
740 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
742 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
743 asf->packet_timestamp_end = timestamp;
745 asf->packet_nb_payloads++;
749 m_obj_offset += payload_len;
752 if (!asf->multi_payloads_present)
754 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1))
760 static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
762 ASFContext *asf = s->priv_data;
765 AVCodecContext *codec;
766 int64_t packet_st,pts;
768 int flags= pkt->flags;
770 codec = s->streams[pkt->stream_index]->codec;
771 stream = &asf->streams[pkt->stream_index];
773 if(codec->codec_type == AVMEDIA_TYPE_AUDIO)
774 flags &= ~AV_PKT_FLAG_KEY;
776 pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
777 assert(pts != AV_NOPTS_VALUE);
778 duration = pts * 10000;
779 asf->duration= FFMAX(asf->duration, duration + pkt->duration * 10000);
781 packet_st = asf->nb_packets;
782 put_frame(s, stream, s->streams[pkt->stream_index], pkt->dts, pkt->data, pkt->size, flags);
785 if ((!asf->is_streamed) && (flags & AV_PKT_FLAG_KEY)) {
786 start_sec = (int)(duration / INT64_C(10000000));
787 if (start_sec != (int)(asf->last_indexed_pts / INT64_C(10000000))) {
788 for(i=asf->nb_index_count;i<start_sec;i++) {
789 if (i>=asf->nb_index_memory_alloc) {
790 asf->nb_index_memory_alloc += ASF_INDEX_BLOCK;
791 asf->index_ptr = (ASFIndex*)av_realloc( asf->index_ptr, sizeof(ASFIndex) * asf->nb_index_memory_alloc );
794 asf->index_ptr[i].packet_number = (uint32_t)packet_st;
795 asf->index_ptr[i].packet_count = (uint16_t)(asf->nb_packets-packet_st);
796 asf->maximum_packet = FFMAX(asf->maximum_packet, (uint16_t)(asf->nb_packets-packet_st));
798 asf->nb_index_count = start_sec;
799 asf->last_indexed_pts = duration;
806 static int asf_write_index(AVFormatContext *s, ASFIndex *index, uint16_t max, uint32_t count)
808 ByteIOContext *pb = s->pb;
811 put_guid(pb, &ff_asf_simple_index_header);
812 put_le64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2)*count);
813 put_guid(pb, &ff_asf_my_guid);
814 put_le64(pb, ASF_INDEXED_INTERVAL);
817 for(i=0; i<count; i++) {
818 put_le32(pb, index[i].packet_number);
819 put_le16(pb, index[i].packet_count);
825 static int asf_write_trailer(AVFormatContext *s)
827 ASFContext *asf = s->priv_data;
828 int64_t file_size,data_size;
830 /* flush the current packet */
831 if (asf->pb.buf_ptr > asf->pb.buffer)
835 data_size = url_ftell(s->pb);
836 if ((!asf->is_streamed) && (asf->nb_index_count != 0)) {
837 asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
839 put_flush_packet(s->pb);
841 if (asf->is_streamed || url_is_streamed(s->pb)) {
842 put_chunk(s, 0x4524, 0, 0); /* end of stream */
844 /* rewrite an updated header */
845 file_size = url_ftell(s->pb);
846 url_fseek(s->pb, 0, SEEK_SET);
847 asf_write_header1(s, file_size, data_size - asf->data_offset);
850 put_flush_packet(s->pb);
851 av_free(asf->index_ptr);
856 AVOutputFormat asf_muxer = {
858 NULL_IF_CONFIG_SMALL("ASF format"),
862 #if CONFIG_LIBMP3LAME
871 .flags = AVFMT_GLOBALHEADER,
872 .codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0},
873 .metadata_conv = ff_asf_metadata_conv,
877 #if CONFIG_ASF_STREAM_MUXER
878 AVOutputFormat asf_stream_muxer = {
880 NULL_IF_CONFIG_SMALL("ASF format"),
884 #if CONFIG_LIBMP3LAME
890 asf_write_stream_header,
893 .flags = AVFMT_GLOBALHEADER,
894 .codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0},
895 .metadata_conv = ff_asf_metadata_conv,
897 #endif //CONFIG_ASF_STREAM_MUXER