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('D', 'I', 'V', '3') },
194 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
195 { CODEC_ID_NONE, 0 },
198 static int preroll_time = 2000;
200 static const uint8_t error_spread_ADPCM_G726[] = { 0x01, 0x90, 0x01, 0x90, 0x01, 0x01, 0x00, 0x00 };
202 static void put_guid(ByteIOContext *s, const GUID *g)
210 put_byte(s, g->v4[i]);
213 static void put_str16(ByteIOContext *s, const char *tag)
217 put_le16(s,strlen(tag) + 1);
226 static void put_str16_nolen(ByteIOContext *s, const char *tag)
238 static int64_t put_header(ByteIOContext *pb, const GUID *g)
248 /* update header size */
249 static void end_header(ByteIOContext *pb, int64_t pos)
253 pos1 = url_ftell(pb);
254 url_fseek(pb, pos + 16, SEEK_SET);
255 put_le64(pb, pos1 - pos);
256 url_fseek(pb, pos1, SEEK_SET);
259 /* write an asf chunk (only used in streaming case) */
260 static void put_chunk(AVFormatContext *s, int type, int payload_length, int flags)
262 ASFContext *asf = s->priv_data;
263 ByteIOContext *pb = &s->pb;
266 length = payload_length + 8;
268 put_le16(pb, length); //size
269 put_le32(pb, asf->seqno);//sequence number
270 put_le16(pb, flags); /* unknown bytes */
271 put_le16(pb, length); //size_confirm
275 /* convert from unix to windows time */
276 static int64_t unix_to_file_time(int ti)
280 t = ti * INT64_C(10000000);
281 t += INT64_C(116444736000000000);
285 /* write the header (used two times if non streamed) */
286 static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size)
288 ASFContext *asf = s->priv_data;
289 ByteIOContext *pb = &s->pb;
290 int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
293 int64_t header_offset, cur_pos, hpos;
297 duration = asf->duration + preroll_time * 10000;
298 has_title = (s->title[0] || s->author[0] || s->copyright[0] || s->comment[0]);
301 for(n=0;n<s->nb_streams;n++) {
302 enc = s->streams[n]->codec;
304 av_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
306 bit_rate += enc->bit_rate;
309 if (asf->is_streamed) {
310 put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
313 put_guid(pb, &asf_header);
314 put_le64(pb, -1); /* header length, will be patched after */
315 put_le32(pb, 3 + has_title + s->nb_streams); /* number of chunks in header */
316 put_byte(pb, 1); /* ??? */
317 put_byte(pb, 2); /* ??? */
320 header_offset = url_ftell(pb);
321 hpos = put_header(pb, &file_header);
322 put_guid(pb, &my_guid);
323 put_le64(pb, file_size);
325 put_le64(pb, unix_to_file_time(file_time));
326 put_le64(pb, asf->nb_packets); /* number of packets */
327 put_le64(pb, duration); /* end time stamp (in 100ns units) */
328 put_le64(pb, duration); /* duration (in 100ns units) */
329 put_le32(pb, preroll_time); /* start time stamp */
330 put_le32(pb, 0); /* ??? */
331 put_le32(pb, asf->is_streamed ? 1 : 0); /* ??? */
332 put_le32(pb, asf->packet_size); /* packet size */
333 put_le32(pb, asf->packet_size); /* packet size */
334 put_le32(pb, bit_rate); /* Nominal data rate in bps */
335 end_header(pb, hpos);
337 /* unknown headers */
338 hpos = put_header(pb, &head1_guid);
339 put_guid(pb, &head2_guid);
342 end_header(pb, hpos);
344 /* title and other infos */
346 hpos = put_header(pb, &comment_header);
347 if ( s->title[0] ) { put_le16(pb, 2 * (strlen(s->title ) + 1)); } else { put_le16(pb, 0); }
348 if ( s->author[0] ) { put_le16(pb, 2 * (strlen(s->author ) + 1)); } else { put_le16(pb, 0); }
349 if ( s->copyright[0] ) { put_le16(pb, 2 * (strlen(s->copyright) + 1)); } else { put_le16(pb, 0); }
350 if ( s->comment[0] ) { put_le16(pb, 2 * (strlen(s->comment ) + 1)); } else { put_le16(pb, 0); }
352 if ( s->title[0] ) put_str16_nolen(pb, s->title);
353 if ( s->author[0] ) put_str16_nolen(pb, s->author);
354 if ( s->copyright[0] ) put_str16_nolen(pb, s->copyright);
355 if ( s->comment[0] ) put_str16_nolen(pb, s->comment);
356 end_header(pb, hpos);
360 for(n=0;n<s->nb_streams;n++) {
362 const uint8_t *er_spr = NULL;
364 // ASFStream *stream = &asf->streams[n];
366 enc = s->streams[n]->codec;
367 asf->streams[n].num = n + 1;
368 asf->streams[n].seq = 0;
371 if (enc->codec_type == CODEC_TYPE_AUDIO) {
372 if (enc->codec_id == CODEC_ID_ADPCM_G726) {
373 er_spr = error_spread_ADPCM_G726;
374 er_spr_len = sizeof(error_spread_ADPCM_G726);
378 switch(enc->codec_type) {
379 case CODEC_TYPE_AUDIO:
381 extra_size = 18 + wav_extra_size;
382 extra_size2 = er_spr_len;
385 case CODEC_TYPE_VIDEO:
386 wav_extra_size = enc->extradata_size;
387 extra_size = 0x33 + wav_extra_size;
392 hpos = put_header(pb, &stream_header);
393 if (enc->codec_type == CODEC_TYPE_AUDIO) {
394 put_guid(pb, &audio_stream);
395 if ((er_spr != NULL) && (er_spr_len != 0)) {
396 put_guid(pb, &audio_conceal_spread);
398 put_guid(pb, &video_conceal_none);
401 put_guid(pb, &video_stream);
402 put_guid(pb, &video_conceal_none);
404 put_le64(pb, 0); /* ??? */
405 es_pos = url_ftell(pb);
406 put_le32(pb, extra_size); /* wav header len */
407 put_le32(pb, extra_size2); /* additional data len */
408 put_le16(pb, n + 1); /* stream number */
409 put_le32(pb, 0); /* ??? */
411 if (enc->codec_type == CODEC_TYPE_AUDIO) {
412 /* WAVEFORMATEX header */
413 int wavsize = put_wav_header(pb, enc);
414 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)) {
421 if (wavsize != extra_size) {
422 cur_pos = url_ftell(pb);
423 url_fseek(pb, es_pos, SEEK_SET);
424 put_le32(pb, wavsize); /* wav header len */
425 url_fseek(pb, cur_pos, SEEK_SET);
427 /* ERROR Correction */
428 if ((er_spr != NULL) && (er_spr_len != 0))
429 put_buffer(pb, er_spr, er_spr_len);
431 put_le32(pb, enc->width);
432 put_le32(pb, enc->height);
433 put_byte(pb, 2); /* ??? */
434 put_le16(pb, 40 + enc->extradata_size); /* size */
436 /* BITMAPINFOHEADER header */
437 put_bmp_header(pb, enc, codec_bmp_tags, 1);
439 end_header(pb, hpos);
444 hpos = put_header(pb, &codec_comment_header);
445 put_guid(pb, &codec_comment1_header);
446 put_le32(pb, s->nb_streams);
447 for(n=0;n<s->nb_streams;n++) {
450 enc = s->streams[n]->codec;
451 p = avcodec_find_encoder(enc->codec_id);
453 put_le16(pb, asf->streams[n].num);
454 put_str16(pb, p ? p->name : enc->codec_name);
455 put_le16(pb, 0); /* no parameters */
459 if (enc->codec_type == CODEC_TYPE_AUDIO) {
462 enc->codec_tag = codec_get_tag(codec_wav_tags, enc->codec_id);
465 put_le16(pb, enc->codec_tag);
469 enc->codec_tag = codec_get_tag(codec_bmp_tags, enc->codec_id);
472 put_le32(pb, enc->codec_tag);
475 end_header(pb, hpos);
477 /* patch the header size fields */
479 cur_pos = url_ftell(pb);
480 header_size = cur_pos - header_offset;
481 if (asf->is_streamed) {
482 header_size += 8 + 30 + 50;
484 url_fseek(pb, header_offset - 10 - 30, SEEK_SET);
485 put_le16(pb, header_size);
486 url_fseek(pb, header_offset - 2 - 30, SEEK_SET);
487 put_le16(pb, header_size);
489 header_size -= 8 + 30 + 50;
491 header_size += 24 + 6;
492 url_fseek(pb, header_offset - 14, SEEK_SET);
493 put_le64(pb, header_size);
494 url_fseek(pb, cur_pos, SEEK_SET);
496 /* movie chunk, followed by packets of packet_size */
497 asf->data_offset = cur_pos;
498 put_guid(pb, &data_header);
499 put_le64(pb, data_chunk_size);
500 put_guid(pb, &my_guid);
501 put_le64(pb, asf->nb_packets); /* nb packets */
502 put_byte(pb, 1); /* ??? */
503 put_byte(pb, 1); /* ??? */
507 static int asf_write_header(AVFormatContext *s)
509 ASFContext *asf = s->priv_data;
511 asf->packet_size = PACKET_SIZE;
514 asf->last_indexed_pts = 0;
515 asf->index_ptr = (ASFIndex*)av_malloc( sizeof(ASFIndex) * ASF_INDEX_BLOCK );
516 asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
517 asf->nb_index_count = 0;
518 asf->maximum_packet = 0;
520 if (asf_write_header1(s, 0, 50) < 0) {
525 put_flush_packet(&s->pb);
527 asf->packet_nb_payloads = 0;
528 asf->prev_packet_sent_time = 0;
529 asf->packet_timestamp_start = -1;
530 asf->packet_timestamp_end = -1;
531 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
532 NULL, NULL, NULL, NULL);
537 static int asf_write_stream_header(AVFormatContext *s)
539 ASFContext *asf = s->priv_data;
541 asf->is_streamed = 1;
543 return asf_write_header(s);
546 static int put_payload_parsing_info(
548 unsigned int sendtime,
549 unsigned int duration,
554 ASFContext *asf = s->priv_data;
555 ByteIOContext *pb = &s->pb;
557 unsigned char *start_ppi_ptr = pb->buf_ptr;
559 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
561 put_byte(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
562 for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++){
566 if (asf->multi_payloads_present)
567 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
571 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
573 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
575 put_byte(pb, iLengthTypeFlags);
577 put_byte(pb, ASF_PPI_PROPERTY_FLAGS);
579 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
580 put_le16(pb, padsize - 2);
581 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
582 put_byte(pb, padsize - 1);
584 put_le32(pb, sendtime);
585 put_le16(pb, duration);
586 if (asf->multi_payloads_present)
587 put_byte(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
589 ppi_size = pb->buf_ptr - start_ppi_ptr;
594 static void flush_packet(AVFormatContext *s)
596 ASFContext *asf = s->priv_data;
597 int packet_hdr_size, packet_filled_size;
599 if (asf->is_streamed) {
600 put_chunk(s, 0x4424, asf->packet_size, 0);
603 packet_hdr_size = put_payload_parsing_info(
605 asf->packet_timestamp_start,
606 asf->packet_timestamp_end - asf->packet_timestamp_start,
607 asf->packet_nb_payloads,
608 asf->packet_size_left
611 packet_filled_size = PACKET_SIZE - packet_hdr_size - asf->packet_size_left;
612 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
614 put_buffer(&s->pb, asf->packet_buf, asf->packet_size - packet_hdr_size);
616 put_flush_packet(&s->pb);
618 asf->packet_nb_payloads = 0;
619 asf->prev_packet_sent_time = asf->packet_timestamp_start;
620 asf->packet_timestamp_start = -1;
621 asf->packet_timestamp_end = -1;
622 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
623 NULL, NULL, NULL, NULL);
626 static void put_payload_header(
629 int presentation_time,
636 ASFContext *asf = s->priv_data;
637 ByteIOContext *pb = &asf->pb;
641 if (flags & PKT_FLAG_KEY)
642 val |= ASF_PL_FLAG_KEY_FRAME;
645 put_byte(pb, stream->seq); //Media object number
646 put_le32(pb, m_obj_offset); //Offset Into Media Object
648 // Replicated Data shall be at least 8 bytes long.
649 // The first 4 bytes of data shall contain the
650 // Size of the Media Object that the payload belongs to.
651 // The next 4 bytes of data shall contain the
652 // Presentation Time for the media object that the payload belongs to.
653 put_byte(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
655 put_le32(pb, m_obj_size); //Replicated Data - Media Object Size
656 put_le32(pb, presentation_time);//Replicated Data - Presentation Time
658 if (asf->multi_payloads_present){
659 put_le16(pb, payload_len); //payload length
663 static void put_frame(
672 ASFContext *asf = s->priv_data;
673 int m_obj_offset, payload_len, frag_len1;
676 while (m_obj_offset < m_obj_size) {
677 payload_len = m_obj_size - m_obj_offset;
678 if (asf->packet_timestamp_start == -1) {
679 asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT);
681 if (asf->multi_payloads_present){
682 asf->packet_size_left = PACKET_SIZE; //For debug
683 asf->packet_size_left = PACKET_SIZE - PACKET_HEADER_MIN_SIZE - 1;
684 frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
687 asf->packet_size_left = PACKET_SIZE - PACKET_HEADER_MIN_SIZE;
688 frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
690 if (asf->prev_packet_sent_time > timestamp)
691 asf->packet_timestamp_start = asf->prev_packet_sent_time;
693 asf->packet_timestamp_start = timestamp;
697 frag_len1 = asf->packet_size_left - PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS;
699 if (asf->prev_packet_sent_time > timestamp)
700 asf->packet_timestamp_start = asf->prev_packet_sent_time;
701 else if (asf->packet_timestamp_start >= timestamp)
702 asf->packet_timestamp_start = timestamp;
705 if (payload_len > frag_len1)
706 payload_len = frag_len1;
707 else if (payload_len == (frag_len1 - 1))
708 payload_len = frag_len1 - 2; //additional byte need to put padding length
710 put_payload_header(s, stream, timestamp+preroll_time, m_obj_size, m_obj_offset, payload_len, flags);
711 put_buffer(&asf->pb, buf, payload_len);
713 if (asf->multi_payloads_present)
714 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
716 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
717 asf->packet_timestamp_end = timestamp;
719 asf->packet_nb_payloads++;
723 m_obj_offset += payload_len;
726 if (!asf->multi_payloads_present)
728 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + 1))
734 static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
736 ASFContext *asf = s->priv_data;
739 AVCodecContext *codec;
740 int64_t packet_st,pts;
743 codec = s->streams[pkt->stream_index]->codec;
744 stream = &asf->streams[pkt->stream_index];
746 //XXX /FIXME use duration from AVPacket (quick hack by)
747 pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
748 if (pts == AV_NOPTS_VALUE) {
749 if (codec->codec_type == CODEC_TYPE_AUDIO) {
750 duration = (codec->frame_number * (int64_t)codec->frame_size * INT64_C(10000000)) /
753 duration = av_rescale(codec->frame_number * (int64_t)codec->time_base.num, 10000000, codec->time_base.den);
756 duration = pts * 10000;
758 if (duration > asf->duration)
759 asf->duration = duration;
761 packet_st = asf->nb_packets;
762 put_frame(s, stream, pkt->pts, pkt->data, pkt->size, pkt->flags);
765 if ((!asf->is_streamed) && (codec->codec_type == CODEC_TYPE_VIDEO) && (pkt->flags & PKT_FLAG_KEY)) {
766 start_sec = (int)(duration / INT64_C(10000000));
767 if (start_sec != (int)(asf->last_indexed_pts / INT64_C(10000000))) {
768 for(i=asf->nb_index_count;i<start_sec;i++) {
769 if (i>=asf->nb_index_memory_alloc) {
770 asf->nb_index_memory_alloc += ASF_INDEX_BLOCK;
771 asf->index_ptr = (ASFIndex*)av_realloc( asf->index_ptr, sizeof(ASFIndex) * asf->nb_index_memory_alloc );
774 asf->index_ptr[i].packet_number = (uint32_t)packet_st;
775 asf->index_ptr[i].packet_count = (uint16_t)(asf->nb_packets-packet_st);
776 if (asf->maximum_packet < (uint16_t)(asf->nb_packets-packet_st))
777 asf->maximum_packet = (uint16_t)(asf->nb_packets-packet_st);
779 asf->nb_index_count = start_sec;
780 asf->last_indexed_pts = duration;
787 static int asf_write_index(AVFormatContext *s, ASFIndex *index, uint16_t max, uint32_t count)
789 ByteIOContext *pb = &s->pb;
792 put_guid(pb, &simple_index_header);
793 put_le64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2)*count);
794 put_guid(pb, &my_guid);
795 put_le64(pb, ASF_INDEXED_INTERVAL);
798 for(i=0; i<count; i++) {
799 put_le32(pb, index[i].packet_number);
800 put_le16(pb, index[i].packet_count);
806 static int asf_write_trailer(AVFormatContext *s)
808 ASFContext *asf = s->priv_data;
809 int64_t file_size,data_size;
811 /* flush the current packet */
812 if (asf->pb.buf_ptr > asf->pb.buffer)
816 data_size = url_ftell(&s->pb);
817 if ((!asf->is_streamed) && (asf->nb_index_count != 0)) {
818 asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
820 put_flush_packet(&s->pb);
822 if (asf->is_streamed) {
823 put_chunk(s, 0x4524, 0, 0); /* end of stream */
825 /* rewrite an updated header */
826 file_size = url_ftell(&s->pb);
827 url_fseek(&s->pb, 0, SEEK_SET);
828 asf_write_header1(s, file_size, data_size - asf->data_offset);
831 put_flush_packet(&s->pb);
832 av_free(asf->index_ptr);
836 #ifdef CONFIG_ASF_MUXER
837 AVOutputFormat asf_muxer = {
843 #ifdef CONFIG_LIBMP3LAME
852 .flags = AVFMT_GLOBALHEADER,
853 .codec_tag= (const AVCodecTag*[]){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0},
857 #ifdef CONFIG_ASF_STREAM_MUXER
858 AVOutputFormat asf_stream_muxer = {
864 #ifdef CONFIG_LIBMP3LAME
870 asf_write_stream_header,
873 .flags = AVFMT_GLOBALHEADER,
874 .codec_tag= (const AVCodecTag*[]){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0},
876 #endif //CONFIG_ASF_STREAM_MUXER