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 static int preroll_time = 2000;
199 static const uint8_t error_spread_ADPCM_G726[] = { 0x01, 0x90, 0x01, 0x90, 0x01, 0x01, 0x00, 0x00 };
201 static void put_guid(ByteIOContext *s, const GUID *g)
203 assert(sizeof(*g) == 16);
204 put_buffer(s, g, sizeof(*g));
207 static void put_str16_nolen(ByteIOContext *s, const char *tag);
208 static void put_str16(ByteIOContext *s, const char *tag)
210 put_le16(s,strlen(tag) + 1);
211 put_str16_nolen(s, tag);
214 static void put_str16_nolen(ByteIOContext *s, const char *tag)
224 static int64_t put_header(ByteIOContext *pb, const GUID *g)
234 /* update header size */
235 static void end_header(ByteIOContext *pb, int64_t pos)
239 pos1 = url_ftell(pb);
240 url_fseek(pb, pos + 16, SEEK_SET);
241 put_le64(pb, pos1 - pos);
242 url_fseek(pb, pos1, SEEK_SET);
245 /* write an asf chunk (only used in streaming case) */
246 static void put_chunk(AVFormatContext *s, int type, int payload_length, int flags)
248 ASFContext *asf = s->priv_data;
249 ByteIOContext *pb = &s->pb;
252 length = payload_length + 8;
254 put_le16(pb, length); //size
255 put_le32(pb, asf->seqno);//sequence number
256 put_le16(pb, flags); /* unknown bytes */
257 put_le16(pb, length); //size_confirm
261 /* convert from unix to windows time */
262 static int64_t unix_to_file_time(int ti)
266 t = ti * INT64_C(10000000);
267 t += INT64_C(116444736000000000);
271 /* write the header (used two times if non streamed) */
272 static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size)
274 ASFContext *asf = s->priv_data;
275 ByteIOContext *pb = &s->pb;
276 int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
279 int64_t header_offset, cur_pos, hpos;
283 duration = asf->duration + preroll_time * 10000;
284 has_title = (s->title[0] || s->author[0] || s->copyright[0] || s->comment[0]);
287 for(n=0;n<s->nb_streams;n++) {
288 enc = s->streams[n]->codec;
290 av_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
292 bit_rate += enc->bit_rate;
295 if (asf->is_streamed) {
296 put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
299 put_guid(pb, &asf_header);
300 put_le64(pb, -1); /* header length, will be patched after */
301 put_le32(pb, 3 + has_title + s->nb_streams); /* number of chunks in header */
302 put_byte(pb, 1); /* ??? */
303 put_byte(pb, 2); /* ??? */
306 header_offset = url_ftell(pb);
307 hpos = put_header(pb, &file_header);
308 put_guid(pb, &my_guid);
309 put_le64(pb, file_size);
311 put_le64(pb, unix_to_file_time(file_time));
312 put_le64(pb, asf->nb_packets); /* number of packets */
313 put_le64(pb, duration); /* end time stamp (in 100ns units) */
314 put_le64(pb, duration); /* duration (in 100ns units) */
315 put_le32(pb, preroll_time); /* start time stamp */
316 put_le32(pb, 0); /* ??? */
317 put_le32(pb, asf->is_streamed ? 1 : 0); /* ??? */
318 put_le32(pb, asf->packet_size); /* packet size */
319 put_le32(pb, asf->packet_size); /* packet size */
320 put_le32(pb, bit_rate); /* Nominal data rate in bps */
321 end_header(pb, hpos);
323 /* unknown headers */
324 hpos = put_header(pb, &head1_guid);
325 put_guid(pb, &head2_guid);
328 end_header(pb, hpos);
330 /* title and other infos */
332 hpos = put_header(pb, &comment_header);
333 if ( s->title[0] ) { put_le16(pb, 2 * (strlen(s->title ) + 1)); } else { put_le16(pb, 0); }
334 if ( s->author[0] ) { put_le16(pb, 2 * (strlen(s->author ) + 1)); } else { put_le16(pb, 0); }
335 if ( s->copyright[0] ) { put_le16(pb, 2 * (strlen(s->copyright) + 1)); } else { put_le16(pb, 0); }
336 if ( s->comment[0] ) { put_le16(pb, 2 * (strlen(s->comment ) + 1)); } else { put_le16(pb, 0); }
338 if ( s->title[0] ) put_str16_nolen(pb, s->title);
339 if ( s->author[0] ) put_str16_nolen(pb, s->author);
340 if ( s->copyright[0] ) put_str16_nolen(pb, s->copyright);
341 if ( s->comment[0] ) put_str16_nolen(pb, s->comment);
342 end_header(pb, hpos);
346 for(n=0;n<s->nb_streams;n++) {
348 const uint8_t *er_spr = NULL;
350 // ASFStream *stream = &asf->streams[n];
352 enc = s->streams[n]->codec;
353 asf->streams[n].num = n + 1;
354 asf->streams[n].seq = 0;
357 if (enc->codec_type == CODEC_TYPE_AUDIO) {
358 if (enc->codec_id == CODEC_ID_ADPCM_G726) {
359 er_spr = error_spread_ADPCM_G726;
360 er_spr_len = sizeof(error_spread_ADPCM_G726);
364 switch(enc->codec_type) {
365 case CODEC_TYPE_AUDIO:
367 extra_size = 18 + wav_extra_size;
368 extra_size2 = er_spr_len;
371 case CODEC_TYPE_VIDEO:
372 wav_extra_size = enc->extradata_size;
373 extra_size = 0x33 + wav_extra_size;
378 hpos = put_header(pb, &stream_header);
379 if (enc->codec_type == CODEC_TYPE_AUDIO) {
380 put_guid(pb, &audio_stream);
381 if ((er_spr != NULL) && (er_spr_len != 0)) {
382 put_guid(pb, &audio_conceal_spread);
384 put_guid(pb, &video_conceal_none);
387 put_guid(pb, &video_stream);
388 put_guid(pb, &video_conceal_none);
390 put_le64(pb, 0); /* ??? */
391 es_pos = url_ftell(pb);
392 put_le32(pb, extra_size); /* wav header len */
393 put_le32(pb, extra_size2); /* additional data len */
394 put_le16(pb, n + 1); /* stream number */
395 put_le32(pb, 0); /* ??? */
397 if (enc->codec_type == CODEC_TYPE_AUDIO) {
398 /* WAVEFORMATEX header */
399 int wavsize = put_wav_header(pb, enc);
400 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)) {
407 if (wavsize != extra_size) {
408 cur_pos = url_ftell(pb);
409 url_fseek(pb, es_pos, SEEK_SET);
410 put_le32(pb, wavsize); /* wav header len */
411 url_fseek(pb, cur_pos, SEEK_SET);
413 /* ERROR Correction */
414 if ((er_spr != NULL) && (er_spr_len != 0))
415 put_buffer(pb, er_spr, er_spr_len);
417 put_le32(pb, enc->width);
418 put_le32(pb, enc->height);
419 put_byte(pb, 2); /* ??? */
420 put_le16(pb, 40 + enc->extradata_size); /* size */
422 /* BITMAPINFOHEADER header */
423 put_bmp_header(pb, enc, codec_bmp_tags, 1);
425 end_header(pb, hpos);
430 hpos = put_header(pb, &codec_comment_header);
431 put_guid(pb, &codec_comment1_header);
432 put_le32(pb, s->nb_streams);
433 for(n=0;n<s->nb_streams;n++) {
436 enc = s->streams[n]->codec;
437 p = avcodec_find_encoder(enc->codec_id);
439 put_le16(pb, asf->streams[n].num);
440 put_str16(pb, p ? p->name : enc->codec_name);
441 put_le16(pb, 0); /* no parameters */
445 if (enc->codec_type == CODEC_TYPE_AUDIO) {
447 put_le16(pb, enc->codec_tag);
450 put_le32(pb, enc->codec_tag);
455 end_header(pb, hpos);
457 /* patch the header size fields */
459 cur_pos = url_ftell(pb);
460 header_size = cur_pos - header_offset;
461 if (asf->is_streamed) {
462 header_size += 8 + 30 + 50;
464 url_fseek(pb, header_offset - 10 - 30, SEEK_SET);
465 put_le16(pb, header_size);
466 url_fseek(pb, header_offset - 2 - 30, SEEK_SET);
467 put_le16(pb, header_size);
469 header_size -= 8 + 30 + 50;
471 header_size += 24 + 6;
472 url_fseek(pb, header_offset - 14, SEEK_SET);
473 put_le64(pb, header_size);
474 url_fseek(pb, cur_pos, SEEK_SET);
476 /* movie chunk, followed by packets of packet_size */
477 asf->data_offset = cur_pos;
478 put_guid(pb, &data_header);
479 put_le64(pb, data_chunk_size);
480 put_guid(pb, &my_guid);
481 put_le64(pb, asf->nb_packets); /* nb packets */
482 put_byte(pb, 1); /* ??? */
483 put_byte(pb, 1); /* ??? */
487 static int asf_write_header(AVFormatContext *s)
489 ASFContext *asf = s->priv_data;
491 asf->packet_size = PACKET_SIZE;
494 asf->last_indexed_pts = 0;
495 asf->index_ptr = (ASFIndex*)av_malloc( sizeof(ASFIndex) * ASF_INDEX_BLOCK );
496 asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
497 asf->nb_index_count = 0;
498 asf->maximum_packet = 0;
500 if (asf_write_header1(s, 0, 50) < 0) {
505 put_flush_packet(&s->pb);
507 asf->packet_nb_payloads = 0;
508 asf->packet_timestamp_start = -1;
509 asf->packet_timestamp_end = -1;
510 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
511 NULL, NULL, NULL, NULL);
516 static int asf_write_stream_header(AVFormatContext *s)
518 ASFContext *asf = s->priv_data;
520 asf->is_streamed = 1;
522 return asf_write_header(s);
525 static int put_payload_parsing_info(
527 unsigned int sendtime,
528 unsigned int duration,
533 ASFContext *asf = s->priv_data;
534 ByteIOContext *pb = &s->pb;
536 int64_t start= url_ftell(pb);
538 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
540 padsize -= PACKET_HEADER_MIN_SIZE;
541 if(asf->multi_payloads_present)
545 put_byte(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
546 for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++){
550 if (asf->multi_payloads_present)
551 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
555 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
557 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
559 put_byte(pb, iLengthTypeFlags);
561 put_byte(pb, ASF_PPI_PROPERTY_FLAGS);
563 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
564 put_le16(pb, padsize - 2);
565 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
566 put_byte(pb, padsize - 1);
568 put_le32(pb, sendtime);
569 put_le16(pb, duration);
570 if (asf->multi_payloads_present)
571 put_byte(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
573 ppi_size = url_ftell(pb) - start;
578 static void flush_packet(AVFormatContext *s)
580 ASFContext *asf = s->priv_data;
581 int packet_hdr_size, packet_filled_size;
583 if (asf->is_streamed) {
584 put_chunk(s, 0x4424, asf->packet_size, 0);
587 packet_hdr_size = put_payload_parsing_info(
589 asf->packet_timestamp_start,
590 asf->packet_timestamp_end - asf->packet_timestamp_start,
591 asf->packet_nb_payloads,
592 asf->packet_size_left
595 packet_filled_size = PACKET_SIZE - asf->packet_size_left;
596 assert(packet_hdr_size <= asf->packet_size_left);
597 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
599 put_buffer(&s->pb, asf->packet_buf, asf->packet_size - packet_hdr_size);
601 put_flush_packet(&s->pb);
603 asf->packet_nb_payloads = 0;
604 asf->packet_timestamp_start = -1;
605 asf->packet_timestamp_end = -1;
606 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
607 NULL, NULL, NULL, NULL);
610 static void put_payload_header(
613 int presentation_time,
620 ASFContext *asf = s->priv_data;
621 ByteIOContext *pb = &asf->pb;
625 if (flags & PKT_FLAG_KEY)
626 val |= ASF_PL_FLAG_KEY_FRAME;
629 put_byte(pb, stream->seq); //Media object number
630 put_le32(pb, m_obj_offset); //Offset Into Media Object
632 // Replicated Data shall be at least 8 bytes long.
633 // The first 4 bytes of data shall contain the
634 // Size of the Media Object that the payload belongs to.
635 // The next 4 bytes of data shall contain the
636 // Presentation Time for the media object that the payload belongs to.
637 put_byte(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
639 put_le32(pb, m_obj_size); //Replicated Data - Media Object Size
640 put_le32(pb, presentation_time);//Replicated Data - Presentation Time
642 if (asf->multi_payloads_present){
643 put_le16(pb, payload_len); //payload length
647 static void put_frame(
656 ASFContext *asf = s->priv_data;
657 int m_obj_offset, payload_len, frag_len1;
660 while (m_obj_offset < m_obj_size) {
661 payload_len = m_obj_size - m_obj_offset;
662 if (asf->packet_timestamp_start == -1) {
663 asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT);
665 asf->packet_size_left = PACKET_SIZE;
666 if (asf->multi_payloads_present){
667 frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
670 frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
672 asf->packet_timestamp_start = timestamp;
676 frag_len1 = asf->packet_size_left - PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS - PACKET_HEADER_MIN_SIZE - 1;
678 asf->packet_timestamp_start = timestamp;
681 if (payload_len > frag_len1)
682 payload_len = frag_len1;
683 else if (payload_len == (frag_len1 - 1))
684 payload_len = frag_len1 - 2; //additional byte need to put padding length
686 put_payload_header(s, stream, timestamp+preroll_time, m_obj_size, m_obj_offset, payload_len, flags);
687 put_buffer(&asf->pb, buf, payload_len);
689 if (asf->multi_payloads_present)
690 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
692 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
693 asf->packet_timestamp_end = timestamp;
695 asf->packet_nb_payloads++;
699 m_obj_offset += payload_len;
702 if (!asf->multi_payloads_present)
704 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1))
710 static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
712 ASFContext *asf = s->priv_data;
715 AVCodecContext *codec;
716 int64_t packet_st,pts;
719 codec = s->streams[pkt->stream_index]->codec;
720 stream = &asf->streams[pkt->stream_index];
722 //XXX /FIXME use duration from AVPacket (quick hack by)
723 pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
724 assert(pts != AV_NOPTS_VALUE);
725 duration = pts * 10000;
726 asf->duration= FFMAX(asf->duration, duration);
728 packet_st = asf->nb_packets;
729 put_frame(s, stream, pkt->dts, pkt->data, pkt->size, pkt->flags);
732 if ((!asf->is_streamed) && (codec->codec_type == CODEC_TYPE_VIDEO) && (pkt->flags & PKT_FLAG_KEY)) {
733 start_sec = (int)(duration / INT64_C(10000000));
734 if (start_sec != (int)(asf->last_indexed_pts / INT64_C(10000000))) {
735 for(i=asf->nb_index_count;i<start_sec;i++) {
736 if (i>=asf->nb_index_memory_alloc) {
737 asf->nb_index_memory_alloc += ASF_INDEX_BLOCK;
738 asf->index_ptr = (ASFIndex*)av_realloc( asf->index_ptr, sizeof(ASFIndex) * asf->nb_index_memory_alloc );
741 asf->index_ptr[i].packet_number = (uint32_t)packet_st;
742 asf->index_ptr[i].packet_count = (uint16_t)(asf->nb_packets-packet_st);
743 asf->maximum_packet = FFMAX(asf->maximum_packet, (uint16_t)(asf->nb_packets-packet_st));
745 asf->nb_index_count = start_sec;
746 asf->last_indexed_pts = duration;
753 static int asf_write_index(AVFormatContext *s, ASFIndex *index, uint16_t max, uint32_t count)
755 ByteIOContext *pb = &s->pb;
758 put_guid(pb, &simple_index_header);
759 put_le64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2)*count);
760 put_guid(pb, &my_guid);
761 put_le64(pb, ASF_INDEXED_INTERVAL);
764 for(i=0; i<count; i++) {
765 put_le32(pb, index[i].packet_number);
766 put_le16(pb, index[i].packet_count);
772 static int asf_write_trailer(AVFormatContext *s)
774 ASFContext *asf = s->priv_data;
775 int64_t file_size,data_size;
777 /* flush the current packet */
778 if (asf->pb.buf_ptr > asf->pb.buffer)
782 data_size = url_ftell(&s->pb);
783 if ((!asf->is_streamed) && (asf->nb_index_count != 0)) {
784 asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
786 put_flush_packet(&s->pb);
788 if (asf->is_streamed) {
789 put_chunk(s, 0x4524, 0, 0); /* end of stream */
791 /* rewrite an updated header */
792 file_size = url_ftell(&s->pb);
793 url_fseek(&s->pb, 0, SEEK_SET);
794 asf_write_header1(s, file_size, data_size - asf->data_offset);
797 put_flush_packet(&s->pb);
798 av_free(asf->index_ptr);
802 #ifdef CONFIG_ASF_MUXER
803 AVOutputFormat asf_muxer = {
809 #ifdef CONFIG_LIBMP3LAME
818 .flags = AVFMT_GLOBALHEADER,
819 .codec_tag= (const AVCodecTag*[]){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0},
823 #ifdef CONFIG_ASF_STREAM_MUXER
824 AVOutputFormat asf_stream_muxer = {
830 #ifdef CONFIG_LIBMP3LAME
836 asf_write_stream_header,
839 .flags = AVFMT_GLOBALHEADER,
840 .codec_tag= (const AVCodecTag*[]){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0},
842 #endif //CONFIG_ASF_STREAM_MUXER