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)
209 put_byte(s, g->v4[i]);
212 static void put_str16(ByteIOContext *s, const char *tag)
216 put_le16(s,strlen(tag) + 1);
225 static void put_str16_nolen(ByteIOContext *s, const char *tag)
237 static int64_t put_header(ByteIOContext *pb, const GUID *g)
247 /* update header size */
248 static void end_header(ByteIOContext *pb, int64_t pos)
252 pos1 = url_ftell(pb);
253 url_fseek(pb, pos + 16, SEEK_SET);
254 put_le64(pb, pos1 - pos);
255 url_fseek(pb, pos1, SEEK_SET);
258 /* write an asf chunk (only used in streaming case) */
259 static void put_chunk(AVFormatContext *s, int type, int payload_length, int flags)
261 ASFContext *asf = s->priv_data;
262 ByteIOContext *pb = &s->pb;
265 length = payload_length + 8;
267 put_le16(pb, length); //size
268 put_le32(pb, asf->seqno);//sequence number
269 put_le16(pb, flags); /* unknown bytes */
270 put_le16(pb, length); //size_confirm
274 /* convert from unix to windows time */
275 static int64_t unix_to_file_time(int ti)
279 t = ti * INT64_C(10000000);
280 t += INT64_C(116444736000000000);
284 /* write the header (used two times if non streamed) */
285 static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size)
287 ASFContext *asf = s->priv_data;
288 ByteIOContext *pb = &s->pb;
289 int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
292 int64_t header_offset, cur_pos, hpos;
296 duration = asf->duration + preroll_time * 10000;
297 has_title = (s->title[0] || s->author[0] || s->copyright[0] || s->comment[0]);
300 for(n=0;n<s->nb_streams;n++) {
301 enc = s->streams[n]->codec;
303 av_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
305 bit_rate += enc->bit_rate;
308 if (asf->is_streamed) {
309 put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
312 put_guid(pb, &asf_header);
313 put_le64(pb, -1); /* header length, will be patched after */
314 put_le32(pb, 3 + has_title + s->nb_streams); /* number of chunks in header */
315 put_byte(pb, 1); /* ??? */
316 put_byte(pb, 2); /* ??? */
319 header_offset = url_ftell(pb);
320 hpos = put_header(pb, &file_header);
321 put_guid(pb, &my_guid);
322 put_le64(pb, file_size);
324 put_le64(pb, unix_to_file_time(file_time));
325 put_le64(pb, asf->nb_packets); /* number of packets */
326 put_le64(pb, duration); /* end time stamp (in 100ns units) */
327 put_le64(pb, duration); /* duration (in 100ns units) */
328 put_le32(pb, preroll_time); /* start time stamp */
329 put_le32(pb, 0); /* ??? */
330 put_le32(pb, asf->is_streamed ? 1 : 0); /* ??? */
331 put_le32(pb, asf->packet_size); /* packet size */
332 put_le32(pb, asf->packet_size); /* packet size */
333 put_le32(pb, bit_rate); /* Nominal data rate in bps */
334 end_header(pb, hpos);
336 /* unknown headers */
337 hpos = put_header(pb, &head1_guid);
338 put_guid(pb, &head2_guid);
341 end_header(pb, hpos);
343 /* title and other infos */
345 hpos = put_header(pb, &comment_header);
346 if ( s->title[0] ) { put_le16(pb, 2 * (strlen(s->title ) + 1)); } else { put_le16(pb, 0); }
347 if ( s->author[0] ) { put_le16(pb, 2 * (strlen(s->author ) + 1)); } else { put_le16(pb, 0); }
348 if ( s->copyright[0] ) { put_le16(pb, 2 * (strlen(s->copyright) + 1)); } else { put_le16(pb, 0); }
349 if ( s->comment[0] ) { put_le16(pb, 2 * (strlen(s->comment ) + 1)); } else { put_le16(pb, 0); }
351 if ( s->title[0] ) put_str16_nolen(pb, s->title);
352 if ( s->author[0] ) put_str16_nolen(pb, s->author);
353 if ( s->copyright[0] ) put_str16_nolen(pb, s->copyright);
354 if ( s->comment[0] ) put_str16_nolen(pb, s->comment);
355 end_header(pb, hpos);
359 for(n=0;n<s->nb_streams;n++) {
361 const uint8_t *er_spr = NULL;
363 // ASFStream *stream = &asf->streams[n];
365 enc = s->streams[n]->codec;
366 asf->streams[n].num = n + 1;
367 asf->streams[n].seq = 0;
370 if (enc->codec_type == CODEC_TYPE_AUDIO) {
371 if (enc->codec_id == CODEC_ID_ADPCM_G726) {
372 er_spr = error_spread_ADPCM_G726;
373 er_spr_len = sizeof(error_spread_ADPCM_G726);
377 switch(enc->codec_type) {
378 case CODEC_TYPE_AUDIO:
380 extra_size = 18 + wav_extra_size;
381 extra_size2 = er_spr_len;
384 case CODEC_TYPE_VIDEO:
385 wav_extra_size = enc->extradata_size;
386 extra_size = 0x33 + wav_extra_size;
391 hpos = put_header(pb, &stream_header);
392 if (enc->codec_type == CODEC_TYPE_AUDIO) {
393 put_guid(pb, &audio_stream);
394 if ((er_spr != NULL) && (er_spr_len != 0)) {
395 put_guid(pb, &audio_conceal_spread);
397 put_guid(pb, &video_conceal_none);
400 put_guid(pb, &video_stream);
401 put_guid(pb, &video_conceal_none);
403 put_le64(pb, 0); /* ??? */
404 es_pos = url_ftell(pb);
405 put_le32(pb, extra_size); /* wav header len */
406 put_le32(pb, extra_size2); /* additional data len */
407 put_le16(pb, n + 1); /* stream number */
408 put_le32(pb, 0); /* ??? */
410 if (enc->codec_type == CODEC_TYPE_AUDIO) {
411 /* WAVEFORMATEX header */
412 int wavsize = put_wav_header(pb, enc);
413 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)) {
420 if (wavsize != extra_size) {
421 cur_pos = url_ftell(pb);
422 url_fseek(pb, es_pos, SEEK_SET);
423 put_le32(pb, wavsize); /* wav header len */
424 url_fseek(pb, cur_pos, SEEK_SET);
426 /* ERROR Correction */
427 if ((er_spr != NULL) && (er_spr_len != 0))
428 put_buffer(pb, er_spr, er_spr_len);
430 put_le32(pb, enc->width);
431 put_le32(pb, enc->height);
432 put_byte(pb, 2); /* ??? */
433 put_le16(pb, 40 + enc->extradata_size); /* size */
435 /* BITMAPINFOHEADER header */
436 put_bmp_header(pb, enc, codec_bmp_tags, 1);
438 end_header(pb, hpos);
443 hpos = put_header(pb, &codec_comment_header);
444 put_guid(pb, &codec_comment1_header);
445 put_le32(pb, s->nb_streams);
446 for(n=0;n<s->nb_streams;n++) {
449 enc = s->streams[n]->codec;
450 p = avcodec_find_encoder(enc->codec_id);
452 put_le16(pb, asf->streams[n].num);
453 put_str16(pb, p ? p->name : enc->codec_name);
454 put_le16(pb, 0); /* no parameters */
458 if (enc->codec_type == CODEC_TYPE_AUDIO) {
461 enc->codec_tag = codec_get_tag(codec_wav_tags, enc->codec_id);
464 put_le16(pb, enc->codec_tag);
468 enc->codec_tag = codec_get_tag(codec_bmp_tags, enc->codec_id);
471 put_le32(pb, enc->codec_tag);
474 end_header(pb, hpos);
476 /* patch the header size fields */
478 cur_pos = url_ftell(pb);
479 header_size = cur_pos - header_offset;
480 if (asf->is_streamed) {
481 header_size += 8 + 30 + 50;
483 url_fseek(pb, header_offset - 10 - 30, SEEK_SET);
484 put_le16(pb, header_size);
485 url_fseek(pb, header_offset - 2 - 30, SEEK_SET);
486 put_le16(pb, header_size);
488 header_size -= 8 + 30 + 50;
490 header_size += 24 + 6;
491 url_fseek(pb, header_offset - 14, SEEK_SET);
492 put_le64(pb, header_size);
493 url_fseek(pb, cur_pos, SEEK_SET);
495 /* movie chunk, followed by packets of packet_size */
496 asf->data_offset = cur_pos;
497 put_guid(pb, &data_header);
498 put_le64(pb, data_chunk_size);
499 put_guid(pb, &my_guid);
500 put_le64(pb, asf->nb_packets); /* nb packets */
501 put_byte(pb, 1); /* ??? */
502 put_byte(pb, 1); /* ??? */
506 static int asf_write_header(AVFormatContext *s)
508 ASFContext *asf = s->priv_data;
510 asf->packet_size = PACKET_SIZE;
513 asf->last_indexed_pts = 0;
514 asf->index_ptr = (ASFIndex*)av_malloc( sizeof(ASFIndex) * ASF_INDEX_BLOCK );
515 asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
516 asf->nb_index_count = 0;
517 asf->maximum_packet = 0;
519 if (asf_write_header1(s, 0, 50) < 0) {
524 put_flush_packet(&s->pb);
526 asf->packet_nb_payloads = 0;
527 asf->prev_packet_sent_time = 0;
528 asf->packet_timestamp_start = -1;
529 asf->packet_timestamp_end = -1;
530 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
531 NULL, NULL, NULL, NULL);
536 static int asf_write_stream_header(AVFormatContext *s)
538 ASFContext *asf = s->priv_data;
540 asf->is_streamed = 1;
542 return asf_write_header(s);
545 static int put_payload_parsing_info(
547 unsigned int sendtime,
548 unsigned int duration,
553 ASFContext *asf = s->priv_data;
554 ByteIOContext *pb = &s->pb;
556 unsigned char *start_ppi_ptr = pb->buf_ptr;
558 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
560 put_byte(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
561 for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++){
565 if (asf->multi_payloads_present)
566 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
570 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
572 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
574 put_byte(pb, iLengthTypeFlags);
576 put_byte(pb, ASF_PPI_PROPERTY_FLAGS);
578 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
579 put_le16(pb, padsize - 2);
580 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
581 put_byte(pb, padsize - 1);
583 put_le32(pb, sendtime);
584 put_le16(pb, duration);
585 if (asf->multi_payloads_present)
586 put_byte(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
588 ppi_size = pb->buf_ptr - start_ppi_ptr;
593 static void flush_packet(AVFormatContext *s)
595 ASFContext *asf = s->priv_data;
596 int packet_hdr_size, packet_filled_size;
598 if (asf->is_streamed) {
599 put_chunk(s, 0x4424, asf->packet_size, 0);
602 packet_hdr_size = put_payload_parsing_info(
604 asf->packet_timestamp_start,
605 asf->packet_timestamp_end - asf->packet_timestamp_start,
606 asf->packet_nb_payloads,
607 asf->packet_size_left
610 packet_filled_size = PACKET_SIZE - packet_hdr_size - asf->packet_size_left;
611 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
613 put_buffer(&s->pb, asf->packet_buf, asf->packet_size - packet_hdr_size);
615 put_flush_packet(&s->pb);
617 asf->packet_nb_payloads = 0;
618 asf->prev_packet_sent_time = asf->packet_timestamp_start;
619 asf->packet_timestamp_start = -1;
620 asf->packet_timestamp_end = -1;
621 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
622 NULL, NULL, NULL, NULL);
625 static void put_payload_header(
628 int presentation_time,
635 ASFContext *asf = s->priv_data;
636 ByteIOContext *pb = &asf->pb;
640 if (flags & PKT_FLAG_KEY)
641 val |= ASF_PL_FLAG_KEY_FRAME;
644 put_byte(pb, stream->seq); //Media object number
645 put_le32(pb, m_obj_offset); //Offset Into Media Object
647 // Replicated Data shall be at least 8 bytes long.
648 // The first 4 bytes of data shall contain the
649 // Size of the Media Object that the payload belongs to.
650 // The next 4 bytes of data shall contain the
651 // Presentation Time for the media object that the payload belongs to.
652 put_byte(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
654 put_le32(pb, m_obj_size); //Replicated Data - Media Object Size
655 put_le32(pb, presentation_time);//Replicated Data - Presentation Time
657 if (asf->multi_payloads_present){
658 put_le16(pb, payload_len); //payload length
662 static void put_frame(
671 ASFContext *asf = s->priv_data;
672 int m_obj_offset, payload_len, frag_len1;
675 while (m_obj_offset < m_obj_size) {
676 payload_len = m_obj_size - m_obj_offset;
677 if (asf->packet_timestamp_start == -1) {
678 asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT);
680 if (asf->multi_payloads_present){
681 asf->packet_size_left = PACKET_SIZE; //For debug
682 asf->packet_size_left = PACKET_SIZE - PACKET_HEADER_MIN_SIZE - 1;
683 frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
686 asf->packet_size_left = PACKET_SIZE - PACKET_HEADER_MIN_SIZE;
687 frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
689 if (asf->prev_packet_sent_time > timestamp)
690 asf->packet_timestamp_start = asf->prev_packet_sent_time;
692 asf->packet_timestamp_start = timestamp;
696 frag_len1 = asf->packet_size_left - PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS;
698 if (asf->prev_packet_sent_time > timestamp)
699 asf->packet_timestamp_start = asf->prev_packet_sent_time;
700 else if (asf->packet_timestamp_start >= timestamp)
701 asf->packet_timestamp_start = timestamp;
704 if (payload_len > frag_len1)
705 payload_len = frag_len1;
706 else if (payload_len == (frag_len1 - 1))
707 payload_len = frag_len1 - 2; //additional byte need to put padding length
709 put_payload_header(s, stream, timestamp+preroll_time, m_obj_size, m_obj_offset, payload_len, flags);
710 put_buffer(&asf->pb, buf, payload_len);
712 if (asf->multi_payloads_present)
713 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
715 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
716 asf->packet_timestamp_end = timestamp;
718 asf->packet_nb_payloads++;
722 m_obj_offset += payload_len;
725 if (!asf->multi_payloads_present)
727 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + 1))
733 static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
735 ASFContext *asf = s->priv_data;
738 AVCodecContext *codec;
739 int64_t packet_st,pts;
742 codec = s->streams[pkt->stream_index]->codec;
743 stream = &asf->streams[pkt->stream_index];
745 //XXX /FIXME use duration from AVPacket (quick hack by)
746 pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
747 if (pts == AV_NOPTS_VALUE) {
748 if (codec->codec_type == CODEC_TYPE_AUDIO) {
749 duration = (codec->frame_number * (int64_t)codec->frame_size * INT64_C(10000000)) /
752 duration = av_rescale(codec->frame_number * (int64_t)codec->time_base.num, 10000000, codec->time_base.den);
755 duration = pts * 10000;
757 if (duration > asf->duration)
758 asf->duration = duration;
760 packet_st = asf->nb_packets;
761 put_frame(s, stream, pkt->pts, pkt->data, pkt->size, pkt->flags);
764 if ((!asf->is_streamed) && (codec->codec_type == CODEC_TYPE_VIDEO) && (pkt->flags & PKT_FLAG_KEY)) {
765 start_sec = (int)(duration / INT64_C(10000000));
766 if (start_sec != (int)(asf->last_indexed_pts / INT64_C(10000000))) {
767 for(i=asf->nb_index_count;i<start_sec;i++) {
768 if (i>=asf->nb_index_memory_alloc) {
769 asf->nb_index_memory_alloc += ASF_INDEX_BLOCK;
770 asf->index_ptr = (ASFIndex*)av_realloc( asf->index_ptr, sizeof(ASFIndex) * asf->nb_index_memory_alloc );
773 asf->index_ptr[i].packet_number = (uint32_t)packet_st;
774 asf->index_ptr[i].packet_count = (uint16_t)(asf->nb_packets-packet_st);
775 if (asf->maximum_packet < (uint16_t)(asf->nb_packets-packet_st))
776 asf->maximum_packet = (uint16_t)(asf->nb_packets-packet_st);
778 asf->nb_index_count = start_sec;
779 asf->last_indexed_pts = duration;
786 static int asf_write_index(AVFormatContext *s, ASFIndex *index, uint16_t max, uint32_t count)
788 ByteIOContext *pb = &s->pb;
791 put_guid(pb, &simple_index_header);
792 put_le64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2)*count);
793 put_guid(pb, &my_guid);
794 put_le64(pb, ASF_INDEXED_INTERVAL);
797 for(i=0; i<count; i++) {
798 put_le32(pb, index[i].packet_number);
799 put_le16(pb, index[i].packet_count);
805 static int asf_write_trailer(AVFormatContext *s)
807 ASFContext *asf = s->priv_data;
808 int64_t file_size,data_size;
810 /* flush the current packet */
811 if (asf->pb.buf_ptr > asf->pb.buffer)
815 data_size = url_ftell(&s->pb);
816 if ((!asf->is_streamed) && (asf->nb_index_count != 0)) {
817 asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
819 put_flush_packet(&s->pb);
821 if (asf->is_streamed) {
822 put_chunk(s, 0x4524, 0, 0); /* end of stream */
824 /* rewrite an updated header */
825 file_size = url_ftell(&s->pb);
826 url_fseek(&s->pb, 0, SEEK_SET);
827 asf_write_header1(s, file_size, data_size - asf->data_offset);
830 put_flush_packet(&s->pb);
831 av_free(asf->index_ptr);
835 #ifdef CONFIG_ASF_MUXER
836 AVOutputFormat asf_muxer = {
842 #ifdef CONFIG_LIBMP3LAME
851 .flags = AVFMT_GLOBALHEADER,
852 .codec_tag= {codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags},
856 #ifdef CONFIG_ASF_STREAM_MUXER
857 AVOutputFormat asf_stream_muxer = {
863 #ifdef CONFIG_LIBMP3LAME
869 asf_write_stream_header,
872 .flags = AVFMT_GLOBALHEADER,
873 .codec_tag= {codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags},
875 #endif //CONFIG_ASF_STREAM_MUXER