2 * Adaptive stream format muxer
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
29 #define ASF_INDEXED_INTERVAL 10000000
30 #define ASF_INDEX_BLOCK 600
32 #define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
33 #define ASF_PACKET_ERROR_CORRECTION_FLAGS (\
34 ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
35 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE\
38 #if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0)
39 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1
41 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0
44 #define ASF_PPI_PROPERTY_FLAGS (\
45 ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \
46 ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \
47 ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \
48 ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE \
51 #define ASF_PPI_LENGTH_TYPE_FLAGS 0
53 #define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD
55 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
56 # define ASF_PPI_SEQUENCE_FIELD_SIZE 1
58 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
59 # define ASF_PPI_SEQUENCE_FIELD_SIZE 2
61 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
62 # define ASF_PPI_SEQUENCE_FIELD_SIZE 4
64 #ifndef ASF_PPI_SEQUENCE_FIELD_SIZE
65 # define ASF_PPI_SEQUENCE_FIELD_SIZE 0
69 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
70 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 1
72 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
73 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 2
75 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
76 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 4
78 #ifndef ASF_PPI_PACKET_LENGTH_FIELD_SIZE
79 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 0
82 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
83 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 1
85 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
86 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 2
88 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
89 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 4
91 #ifndef ASF_PPI_PADDING_LENGTH_FIELD_SIZE
92 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 0
95 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
96 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 1
98 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
99 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 2
101 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
102 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 4
104 #ifndef ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE
105 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 0
108 #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))
109 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 1
111 #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))
112 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 2
114 #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))
115 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 4
117 #ifndef ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE
118 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 0
121 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
122 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 1
124 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
125 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 2
127 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
128 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 4
130 #ifndef ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE
131 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 0
134 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
135 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 1
137 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
138 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 2
140 #ifndef ASF_PAYLOAD_LENGTH_FIELD_SIZE
141 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 0
144 #define PACKET_HEADER_MIN_SIZE (\
145 ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE + \
146 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE + \
147 1 + /*Length Type Flags*/ \
148 1 + /*Property Flags*/ \
149 ASF_PPI_PACKET_LENGTH_FIELD_SIZE + \
150 ASF_PPI_SEQUENCE_FIELD_SIZE + \
151 ASF_PPI_PADDING_LENGTH_FIELD_SIZE + \
152 4 + /*Send Time Field*/ \
153 2 /*Duration Field*/ \
157 // Replicated Data shall be at least 8 bytes long.
158 #define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08
160 #define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD (\
161 1 + /*Stream Number*/ \
162 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
163 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
164 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
165 ASF_PAYLOAD_REPLICATED_DATA_LENGTH \
168 #define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS (\
169 1 + /*Stream Number*/ \
170 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
171 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
172 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
173 ASF_PAYLOAD_REPLICATED_DATA_LENGTH + \
174 ASF_PAYLOAD_LENGTH_FIELD_SIZE \
177 #define SINGLE_PAYLOAD_DATA_LENGTH (\
179 PACKET_HEADER_MIN_SIZE - \
180 PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \
183 #define MULTI_PAYLOAD_CONSTANT (\
185 PACKET_HEADER_MIN_SIZE - \
186 1 - /*Payload Flags*/ \
187 2*PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \
190 static const AVCodecTag codec_asf_bmp_tags[] = {
191 { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
192 { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
193 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
194 { CODEC_ID_NONE, 0 },
197 #define PREROLL_TIME 3100
199 static void put_guid(ByteIOContext *s, const GUID *g)
201 assert(sizeof(*g) == 16);
202 put_buffer(s, g, sizeof(*g));
205 static void put_str16_nolen(ByteIOContext *s, const char *tag);
206 static void put_str16(ByteIOContext *s, const char *tag)
208 put_le16(s,strlen(tag) + 1);
209 put_str16_nolen(s, tag);
212 static void put_str16_nolen(ByteIOContext *s, const char *tag)
222 static int64_t put_header(ByteIOContext *pb, const GUID *g)
232 /* update header size */
233 static void end_header(ByteIOContext *pb, int64_t pos)
237 pos1 = url_ftell(pb);
238 url_fseek(pb, pos + 16, SEEK_SET);
239 put_le64(pb, pos1 - pos);
240 url_fseek(pb, pos1, SEEK_SET);
243 /* write an asf chunk (only used in streaming case) */
244 static void put_chunk(AVFormatContext *s, int type, int payload_length, int flags)
246 ASFContext *asf = s->priv_data;
247 ByteIOContext *pb = &s->pb;
250 length = payload_length + 8;
252 put_le16(pb, length); //size
253 put_le32(pb, asf->seqno);//sequence number
254 put_le16(pb, flags); /* unknown bytes */
255 put_le16(pb, length); //size_confirm
259 /* convert from unix to windows time */
260 static int64_t unix_to_file_time(int ti)
264 t = ti * INT64_C(10000000);
265 t += INT64_C(116444736000000000);
269 /* write the header (used two times if non streamed) */
270 static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size)
272 ASFContext *asf = s->priv_data;
273 ByteIOContext *pb = &s->pb;
274 int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
277 int64_t header_offset, cur_pos, hpos;
281 duration = asf->duration + PREROLL_TIME * 10000;
282 has_title = (s->title[0] || s->author[0] || s->copyright[0] || s->comment[0]);
285 for(n=0;n<s->nb_streams;n++) {
286 enc = s->streams[n]->codec;
288 av_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
290 bit_rate += enc->bit_rate;
293 if (asf->is_streamed) {
294 put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
297 put_guid(pb, &asf_header);
298 put_le64(pb, -1); /* header length, will be patched after */
299 put_le32(pb, 3 + has_title + s->nb_streams); /* number of chunks in header */
300 put_byte(pb, 1); /* ??? */
301 put_byte(pb, 2); /* ??? */
304 header_offset = url_ftell(pb);
305 hpos = put_header(pb, &file_header);
306 put_guid(pb, &my_guid);
307 put_le64(pb, file_size);
309 put_le64(pb, unix_to_file_time(file_time));
310 put_le64(pb, asf->nb_packets); /* number of packets */
311 put_le64(pb, duration); /* end time stamp (in 100ns units) */
312 put_le64(pb, asf->duration); /* duration (in 100ns units) */
313 put_le64(pb, PREROLL_TIME); /* start time stamp */
314 put_le32(pb, (asf->is_streamed || url_is_streamed(pb)) ? 3 : 2); /* ??? */
315 put_le32(pb, asf->packet_size); /* packet size */
316 put_le32(pb, asf->packet_size); /* packet size */
317 put_le32(pb, bit_rate); /* Nominal data rate in bps */
318 end_header(pb, hpos);
320 /* unknown headers */
321 hpos = put_header(pb, &head1_guid);
322 put_guid(pb, &head2_guid);
325 end_header(pb, hpos);
327 /* title and other infos */
329 hpos = put_header(pb, &comment_header);
330 if ( s->title[0] ) { put_le16(pb, 2 * (strlen(s->title ) + 1)); } else { put_le16(pb, 0); }
331 if ( s->author[0] ) { put_le16(pb, 2 * (strlen(s->author ) + 1)); } else { put_le16(pb, 0); }
332 if ( s->copyright[0] ) { put_le16(pb, 2 * (strlen(s->copyright) + 1)); } else { put_le16(pb, 0); }
333 if ( s->comment[0] ) { put_le16(pb, 2 * (strlen(s->comment ) + 1)); } else { put_le16(pb, 0); }
335 if ( s->title[0] ) put_str16_nolen(pb, s->title);
336 if ( s->author[0] ) put_str16_nolen(pb, s->author);
337 if ( s->copyright[0] ) put_str16_nolen(pb, s->copyright);
338 if ( s->comment[0] ) put_str16_nolen(pb, s->comment);
339 end_header(pb, hpos);
343 for(n=0;n<s->nb_streams;n++) {
345 // ASFStream *stream = &asf->streams[n];
347 enc = s->streams[n]->codec;
348 asf->streams[n].num = n + 1;
349 asf->streams[n].seq = 0;
352 switch(enc->codec_type) {
353 case CODEC_TYPE_AUDIO:
355 extra_size = 18 + wav_extra_size;
359 case CODEC_TYPE_VIDEO:
360 wav_extra_size = enc->extradata_size;
361 extra_size = 0x33 + wav_extra_size;
366 hpos = put_header(pb, &stream_header);
367 if (enc->codec_type == CODEC_TYPE_AUDIO) {
368 put_guid(pb, &audio_stream);
369 put_guid(pb, &audio_conceal_spread);
371 put_guid(pb, &video_stream);
372 put_guid(pb, &video_conceal_none);
374 put_le64(pb, 0); /* ??? */
375 es_pos = url_ftell(pb);
376 put_le32(pb, extra_size); /* wav header len */
377 put_le32(pb, extra_size2); /* additional data len */
378 put_le16(pb, n + 1); /* stream number */
379 put_le32(pb, 0); /* ??? */
381 if (enc->codec_type == CODEC_TYPE_AUDIO) {
382 /* WAVEFORMATEX header */
383 int wavsize = put_wav_header(pb, enc);
384 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)) {
391 if (wavsize != extra_size) {
392 cur_pos = url_ftell(pb);
393 url_fseek(pb, es_pos, SEEK_SET);
394 put_le32(pb, wavsize); /* wav header len */
395 url_fseek(pb, cur_pos, SEEK_SET);
397 /* ERROR Correction */
399 if(enc->codec_id == CODEC_ID_ADPCM_G726 || !enc->block_align){
400 put_le16(pb, 0x0190);
401 put_le16(pb, 0x0190);
403 put_le16(pb, enc->block_align);
404 put_le16(pb, enc->block_align);
409 put_le32(pb, enc->width);
410 put_le32(pb, enc->height);
411 put_byte(pb, 2); /* ??? */
412 put_le16(pb, 40 + enc->extradata_size); /* size */
414 /* BITMAPINFOHEADER header */
415 put_bmp_header(pb, enc, codec_bmp_tags, 1);
417 end_header(pb, hpos);
422 hpos = put_header(pb, &codec_comment_header);
423 put_guid(pb, &codec_comment1_header);
424 put_le32(pb, s->nb_streams);
425 for(n=0;n<s->nb_streams;n++) {
428 enc = s->streams[n]->codec;
429 p = avcodec_find_encoder(enc->codec_id);
431 if(enc->codec_type == CODEC_TYPE_AUDIO)
433 else if(enc->codec_type == CODEC_TYPE_VIDEO)
438 if(enc->codec_id == CODEC_ID_WMAV2)
439 put_str16(pb, "Windows Media Audio V8");
441 put_str16(pb, p ? p->name : enc->codec_name);
442 put_le16(pb, 0); /* no parameters */
446 if (enc->codec_type == CODEC_TYPE_AUDIO) {
448 put_le16(pb, enc->codec_tag);
451 put_le32(pb, enc->codec_tag);
456 end_header(pb, hpos);
458 /* patch the header size fields */
460 cur_pos = url_ftell(pb);
461 header_size = cur_pos - header_offset;
462 if (asf->is_streamed) {
463 header_size += 8 + 30 + 50;
465 url_fseek(pb, header_offset - 10 - 30, SEEK_SET);
466 put_le16(pb, header_size);
467 url_fseek(pb, header_offset - 2 - 30, SEEK_SET);
468 put_le16(pb, header_size);
470 header_size -= 8 + 30 + 50;
472 header_size += 24 + 6;
473 url_fseek(pb, header_offset - 14, SEEK_SET);
474 put_le64(pb, header_size);
475 url_fseek(pb, cur_pos, SEEK_SET);
477 /* movie chunk, followed by packets of packet_size */
478 asf->data_offset = cur_pos;
479 put_guid(pb, &data_header);
480 put_le64(pb, data_chunk_size);
481 put_guid(pb, &my_guid);
482 put_le64(pb, asf->nb_packets); /* nb packets */
483 put_byte(pb, 1); /* ??? */
484 put_byte(pb, 1); /* ??? */
488 static int asf_write_header(AVFormatContext *s)
490 ASFContext *asf = s->priv_data;
492 asf->packet_size = PACKET_SIZE;
495 asf->last_indexed_pts = 0;
496 asf->index_ptr = (ASFIndex*)av_malloc( sizeof(ASFIndex) * ASF_INDEX_BLOCK );
497 asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
498 asf->nb_index_count = 0;
499 asf->maximum_packet = 0;
501 if (asf_write_header1(s, 0, 0) < 0) {
506 put_flush_packet(&s->pb);
508 asf->packet_nb_payloads = 0;
509 asf->packet_timestamp_start = -1;
510 asf->packet_timestamp_end = -1;
511 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
512 NULL, NULL, NULL, NULL);
517 static int asf_write_stream_header(AVFormatContext *s)
519 ASFContext *asf = s->priv_data;
521 asf->is_streamed = 1;
523 return asf_write_header(s);
526 static int put_payload_parsing_info(
528 unsigned int sendtime,
529 unsigned int duration,
534 ASFContext *asf = s->priv_data;
535 ByteIOContext *pb = &s->pb;
537 int64_t start= url_ftell(pb);
539 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
541 padsize -= PACKET_HEADER_MIN_SIZE;
542 if(asf->multi_payloads_present)
546 put_byte(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
547 for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++){
551 if (asf->multi_payloads_present)
552 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
556 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
558 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
560 put_byte(pb, iLengthTypeFlags);
562 put_byte(pb, ASF_PPI_PROPERTY_FLAGS);
564 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
565 put_le16(pb, padsize - 2);
566 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
567 put_byte(pb, padsize - 1);
569 put_le32(pb, sendtime);
570 put_le16(pb, duration);
571 if (asf->multi_payloads_present)
572 put_byte(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
574 ppi_size = url_ftell(pb) - start;
579 static void flush_packet(AVFormatContext *s)
581 ASFContext *asf = s->priv_data;
582 int packet_hdr_size, packet_filled_size;
584 if (asf->is_streamed) {
585 put_chunk(s, 0x4424, asf->packet_size, 0);
588 packet_hdr_size = put_payload_parsing_info(
590 asf->packet_timestamp_start,
591 asf->packet_timestamp_end - asf->packet_timestamp_start,
592 asf->packet_nb_payloads,
593 asf->packet_size_left
596 packet_filled_size = PACKET_SIZE - asf->packet_size_left;
597 assert(packet_hdr_size <= asf->packet_size_left);
598 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
600 put_buffer(&s->pb, asf->packet_buf, asf->packet_size - packet_hdr_size);
602 put_flush_packet(&s->pb);
604 asf->packet_nb_payloads = 0;
605 asf->packet_timestamp_start = -1;
606 asf->packet_timestamp_end = -1;
607 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
608 NULL, NULL, NULL, NULL);
611 static void put_payload_header(
614 int presentation_time,
621 ASFContext *asf = s->priv_data;
622 ByteIOContext *pb = &asf->pb;
626 if (flags & PKT_FLAG_KEY)
627 val |= ASF_PL_FLAG_KEY_FRAME;
630 put_byte(pb, stream->seq); //Media object number
631 put_le32(pb, m_obj_offset); //Offset Into Media Object
633 // Replicated Data shall be at least 8 bytes long.
634 // The first 4 bytes of data shall contain the
635 // Size of the Media Object that the payload belongs to.
636 // The next 4 bytes of data shall contain the
637 // Presentation Time for the media object that the payload belongs to.
638 put_byte(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
640 put_le32(pb, m_obj_size); //Replicated Data - Media Object Size
641 put_le32(pb, presentation_time);//Replicated Data - Presentation Time
643 if (asf->multi_payloads_present){
644 put_le16(pb, payload_len); //payload length
648 static void put_frame(
658 ASFContext *asf = s->priv_data;
659 int m_obj_offset, payload_len, frag_len1;
662 while (m_obj_offset < m_obj_size) {
663 payload_len = m_obj_size - m_obj_offset;
664 if (asf->packet_timestamp_start == -1) {
665 asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT);
667 asf->packet_size_left = PACKET_SIZE;
668 if (asf->multi_payloads_present){
669 frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
672 frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
674 asf->packet_timestamp_start = timestamp;
678 frag_len1 = asf->packet_size_left - PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS - PACKET_HEADER_MIN_SIZE - 1;
680 asf->packet_timestamp_start = timestamp;
682 if(frag_len1 < payload_len && avst->codec->codec_type == CODEC_TYPE_AUDIO){
688 if (payload_len > frag_len1)
689 payload_len = frag_len1;
690 else if (payload_len == (frag_len1 - 1))
691 payload_len = frag_len1 - 2; //additional byte need to put padding length
693 put_payload_header(s, stream, timestamp+PREROLL_TIME, m_obj_size, m_obj_offset, payload_len, flags);
694 put_buffer(&asf->pb, buf, payload_len);
696 if (asf->multi_payloads_present)
697 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
699 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
700 asf->packet_timestamp_end = timestamp;
702 asf->packet_nb_payloads++;
706 m_obj_offset += payload_len;
709 if (!asf->multi_payloads_present)
711 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1))
717 static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
719 ASFContext *asf = s->priv_data;
722 AVCodecContext *codec;
723 int64_t packet_st,pts;
725 int flags= pkt->flags;
727 codec = s->streams[pkt->stream_index]->codec;
728 stream = &asf->streams[pkt->stream_index];
730 if(codec->codec_type == CODEC_TYPE_AUDIO)
731 flags &= ~PKT_FLAG_KEY;
733 //XXX /FIXME use duration from AVPacket (quick hack by)
734 pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
735 assert(pts != AV_NOPTS_VALUE);
736 duration = pts * 10000;
737 asf->duration= FFMAX(asf->duration, duration);
739 packet_st = asf->nb_packets;
740 put_frame(s, stream, s->streams[pkt->stream_index], pkt->dts, pkt->data, pkt->size, flags);
743 if ((!asf->is_streamed) && (flags & PKT_FLAG_KEY)) {
744 start_sec = (int)(duration / INT64_C(10000000));
745 if (start_sec != (int)(asf->last_indexed_pts / INT64_C(10000000))) {
746 for(i=asf->nb_index_count;i<start_sec;i++) {
747 if (i>=asf->nb_index_memory_alloc) {
748 asf->nb_index_memory_alloc += ASF_INDEX_BLOCK;
749 asf->index_ptr = (ASFIndex*)av_realloc( asf->index_ptr, sizeof(ASFIndex) * asf->nb_index_memory_alloc );
752 asf->index_ptr[i].packet_number = (uint32_t)packet_st;
753 asf->index_ptr[i].packet_count = (uint16_t)(asf->nb_packets-packet_st);
754 asf->maximum_packet = FFMAX(asf->maximum_packet, (uint16_t)(asf->nb_packets-packet_st));
756 asf->nb_index_count = start_sec;
757 asf->last_indexed_pts = duration;
764 static int asf_write_index(AVFormatContext *s, ASFIndex *index, uint16_t max, uint32_t count)
766 ByteIOContext *pb = &s->pb;
769 put_guid(pb, &simple_index_header);
770 put_le64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2)*count);
771 put_guid(pb, &my_guid);
772 put_le64(pb, ASF_INDEXED_INTERVAL);
775 for(i=0; i<count; i++) {
776 put_le32(pb, index[i].packet_number);
777 put_le16(pb, index[i].packet_count);
783 static int asf_write_trailer(AVFormatContext *s)
785 ASFContext *asf = s->priv_data;
786 int64_t file_size,data_size;
788 /* flush the current packet */
789 if (asf->pb.buf_ptr > asf->pb.buffer)
793 data_size = url_ftell(&s->pb);
794 if ((!asf->is_streamed) && (asf->nb_index_count != 0)) {
795 asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
797 put_flush_packet(&s->pb);
799 if (asf->is_streamed || url_is_streamed(&s->pb)) {
800 put_chunk(s, 0x4524, 0, 0); /* end of stream */
802 /* rewrite an updated header */
803 file_size = url_ftell(&s->pb);
804 url_fseek(&s->pb, 0, SEEK_SET);
805 asf_write_header1(s, file_size, data_size - asf->data_offset);
808 put_flush_packet(&s->pb);
809 av_free(asf->index_ptr);
813 #ifdef CONFIG_ASF_MUXER
814 AVOutputFormat asf_muxer = {
820 #ifdef CONFIG_LIBMP3LAME
829 .flags = AVFMT_GLOBALHEADER,
830 .codec_tag= (const AVCodecTag*[]){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0},
834 #ifdef CONFIG_ASF_STREAM_MUXER
835 AVOutputFormat asf_stream_muxer = {
841 #ifdef CONFIG_LIBMP3LAME
847 asf_write_stream_header,
850 .flags = AVFMT_GLOBALHEADER,
851 .codec_tag= (const AVCodecTag*[]){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0},
853 #endif //CONFIG_ASF_STREAM_MUXER