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 = 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, duration); /* duration (in 100ns units) */
313 put_le32(pb, preroll_time); /* start time stamp */
314 put_le32(pb, 0); /* ??? */
315 put_le32(pb, asf->is_streamed ? 1 : 0); /* ??? */
316 put_le32(pb, asf->packet_size); /* packet size */
317 put_le32(pb, asf->packet_size); /* packet size */
318 put_le32(pb, bit_rate); /* Nominal data rate in bps */
319 end_header(pb, hpos);
321 /* unknown headers */
322 hpos = put_header(pb, &head1_guid);
323 put_guid(pb, &head2_guid);
326 end_header(pb, hpos);
328 /* title and other infos */
330 hpos = put_header(pb, &comment_header);
331 if ( s->title[0] ) { put_le16(pb, 2 * (strlen(s->title ) + 1)); } else { put_le16(pb, 0); }
332 if ( s->author[0] ) { put_le16(pb, 2 * (strlen(s->author ) + 1)); } else { put_le16(pb, 0); }
333 if ( s->copyright[0] ) { put_le16(pb, 2 * (strlen(s->copyright) + 1)); } else { put_le16(pb, 0); }
334 if ( s->comment[0] ) { put_le16(pb, 2 * (strlen(s->comment ) + 1)); } else { put_le16(pb, 0); }
336 if ( s->title[0] ) put_str16_nolen(pb, s->title);
337 if ( s->author[0] ) put_str16_nolen(pb, s->author);
338 if ( s->copyright[0] ) put_str16_nolen(pb, s->copyright);
339 if ( s->comment[0] ) put_str16_nolen(pb, s->comment);
340 end_header(pb, hpos);
344 for(n=0;n<s->nb_streams;n++) {
346 // ASFStream *stream = &asf->streams[n];
348 enc = s->streams[n]->codec;
349 asf->streams[n].num = n + 1;
350 asf->streams[n].seq = 0;
353 switch(enc->codec_type) {
354 case CODEC_TYPE_AUDIO:
356 extra_size = 18 + wav_extra_size;
360 case CODEC_TYPE_VIDEO:
361 wav_extra_size = enc->extradata_size;
362 extra_size = 0x33 + wav_extra_size;
367 hpos = put_header(pb, &stream_header);
368 if (enc->codec_type == CODEC_TYPE_AUDIO) {
369 put_guid(pb, &audio_stream);
370 put_guid(pb, &audio_conceal_spread);
372 put_guid(pb, &video_stream);
373 put_guid(pb, &video_conceal_none);
375 put_le64(pb, 0); /* ??? */
376 es_pos = url_ftell(pb);
377 put_le32(pb, extra_size); /* wav header len */
378 put_le32(pb, extra_size2); /* additional data len */
379 put_le16(pb, n + 1); /* stream number */
380 put_le32(pb, 0); /* ??? */
382 if (enc->codec_type == CODEC_TYPE_AUDIO) {
383 /* WAVEFORMATEX header */
384 int wavsize = put_wav_header(pb, enc);
385 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)) {
392 if (wavsize != extra_size) {
393 cur_pos = url_ftell(pb);
394 url_fseek(pb, es_pos, SEEK_SET);
395 put_le32(pb, wavsize); /* wav header len */
396 url_fseek(pb, cur_pos, SEEK_SET);
398 /* ERROR Correction */
400 if(enc->codec_id == CODEC_ID_ADPCM_G726 || !enc->block_align){
401 put_le16(pb, 0x0190);
402 put_le16(pb, 0x0190);
404 put_le16(pb, enc->block_align);
405 put_le16(pb, enc->block_align);
410 put_le32(pb, enc->width);
411 put_le32(pb, enc->height);
412 put_byte(pb, 2); /* ??? */
413 put_le16(pb, 40 + enc->extradata_size); /* size */
415 /* BITMAPINFOHEADER header */
416 put_bmp_header(pb, enc, codec_bmp_tags, 1);
418 end_header(pb, hpos);
423 hpos = put_header(pb, &codec_comment_header);
424 put_guid(pb, &codec_comment1_header);
425 put_le32(pb, s->nb_streams);
426 for(n=0;n<s->nb_streams;n++) {
429 enc = s->streams[n]->codec;
430 p = avcodec_find_encoder(enc->codec_id);
432 put_le16(pb, asf->streams[n].num);
433 put_str16(pb, p ? p->name : enc->codec_name);
434 put_le16(pb, 0); /* no parameters */
438 if (enc->codec_type == CODEC_TYPE_AUDIO) {
440 put_le16(pb, enc->codec_tag);
443 put_le32(pb, enc->codec_tag);
448 end_header(pb, hpos);
450 /* patch the header size fields */
452 cur_pos = url_ftell(pb);
453 header_size = cur_pos - header_offset;
454 if (asf->is_streamed) {
455 header_size += 8 + 30 + 50;
457 url_fseek(pb, header_offset - 10 - 30, SEEK_SET);
458 put_le16(pb, header_size);
459 url_fseek(pb, header_offset - 2 - 30, SEEK_SET);
460 put_le16(pb, header_size);
462 header_size -= 8 + 30 + 50;
464 header_size += 24 + 6;
465 url_fseek(pb, header_offset - 14, SEEK_SET);
466 put_le64(pb, header_size);
467 url_fseek(pb, cur_pos, SEEK_SET);
469 /* movie chunk, followed by packets of packet_size */
470 asf->data_offset = cur_pos;
471 put_guid(pb, &data_header);
472 put_le64(pb, data_chunk_size);
473 put_guid(pb, &my_guid);
474 put_le64(pb, asf->nb_packets); /* nb packets */
475 put_byte(pb, 1); /* ??? */
476 put_byte(pb, 1); /* ??? */
480 static int asf_write_header(AVFormatContext *s)
482 ASFContext *asf = s->priv_data;
484 asf->packet_size = PACKET_SIZE;
487 asf->last_indexed_pts = 0;
488 asf->index_ptr = (ASFIndex*)av_malloc( sizeof(ASFIndex) * ASF_INDEX_BLOCK );
489 asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
490 asf->nb_index_count = 0;
491 asf->maximum_packet = 0;
493 if (asf_write_header1(s, 0, 50) < 0) {
498 put_flush_packet(&s->pb);
500 asf->packet_nb_payloads = 0;
501 asf->packet_timestamp_start = -1;
502 asf->packet_timestamp_end = -1;
503 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
504 NULL, NULL, NULL, NULL);
509 static int asf_write_stream_header(AVFormatContext *s)
511 ASFContext *asf = s->priv_data;
513 asf->is_streamed = 1;
515 return asf_write_header(s);
518 static int put_payload_parsing_info(
520 unsigned int sendtime,
521 unsigned int duration,
526 ASFContext *asf = s->priv_data;
527 ByteIOContext *pb = &s->pb;
529 int64_t start= url_ftell(pb);
531 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
533 padsize -= PACKET_HEADER_MIN_SIZE;
534 if(asf->multi_payloads_present)
538 put_byte(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
539 for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++){
543 if (asf->multi_payloads_present)
544 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
548 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
550 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
552 put_byte(pb, iLengthTypeFlags);
554 put_byte(pb, ASF_PPI_PROPERTY_FLAGS);
556 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
557 put_le16(pb, padsize - 2);
558 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
559 put_byte(pb, padsize - 1);
561 put_le32(pb, sendtime);
562 put_le16(pb, duration);
563 if (asf->multi_payloads_present)
564 put_byte(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
566 ppi_size = url_ftell(pb) - start;
571 static void flush_packet(AVFormatContext *s)
573 ASFContext *asf = s->priv_data;
574 int packet_hdr_size, packet_filled_size;
576 if (asf->is_streamed) {
577 put_chunk(s, 0x4424, asf->packet_size, 0);
580 packet_hdr_size = put_payload_parsing_info(
582 asf->packet_timestamp_start,
583 asf->packet_timestamp_end - asf->packet_timestamp_start,
584 asf->packet_nb_payloads,
585 asf->packet_size_left
588 packet_filled_size = PACKET_SIZE - asf->packet_size_left;
589 assert(packet_hdr_size <= asf->packet_size_left);
590 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
592 put_buffer(&s->pb, asf->packet_buf, asf->packet_size - packet_hdr_size);
594 put_flush_packet(&s->pb);
596 asf->packet_nb_payloads = 0;
597 asf->packet_timestamp_start = -1;
598 asf->packet_timestamp_end = -1;
599 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
600 NULL, NULL, NULL, NULL);
603 static void put_payload_header(
606 int presentation_time,
613 ASFContext *asf = s->priv_data;
614 ByteIOContext *pb = &asf->pb;
618 if (flags & PKT_FLAG_KEY)
619 val |= ASF_PL_FLAG_KEY_FRAME;
622 put_byte(pb, stream->seq); //Media object number
623 put_le32(pb, m_obj_offset); //Offset Into Media Object
625 // Replicated Data shall be at least 8 bytes long.
626 // The first 4 bytes of data shall contain the
627 // Size of the Media Object that the payload belongs to.
628 // The next 4 bytes of data shall contain the
629 // Presentation Time for the media object that the payload belongs to.
630 put_byte(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
632 put_le32(pb, m_obj_size); //Replicated Data - Media Object Size
633 put_le32(pb, presentation_time);//Replicated Data - Presentation Time
635 if (asf->multi_payloads_present){
636 put_le16(pb, payload_len); //payload length
640 static void put_frame(
649 ASFContext *asf = s->priv_data;
650 int m_obj_offset, payload_len, frag_len1;
653 while (m_obj_offset < m_obj_size) {
654 payload_len = m_obj_size - m_obj_offset;
655 if (asf->packet_timestamp_start == -1) {
656 asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT);
658 asf->packet_size_left = PACKET_SIZE;
659 if (asf->multi_payloads_present){
660 frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
663 frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
665 asf->packet_timestamp_start = timestamp;
669 frag_len1 = asf->packet_size_left - PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS - PACKET_HEADER_MIN_SIZE - 1;
671 asf->packet_timestamp_start = timestamp;
674 if (payload_len > frag_len1)
675 payload_len = frag_len1;
676 else if (payload_len == (frag_len1 - 1))
677 payload_len = frag_len1 - 2; //additional byte need to put padding length
679 put_payload_header(s, stream, timestamp+preroll_time, m_obj_size, m_obj_offset, payload_len, flags);
680 put_buffer(&asf->pb, buf, payload_len);
682 if (asf->multi_payloads_present)
683 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
685 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
686 asf->packet_timestamp_end = timestamp;
688 asf->packet_nb_payloads++;
692 m_obj_offset += payload_len;
695 if (!asf->multi_payloads_present)
697 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1))
703 static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
705 ASFContext *asf = s->priv_data;
708 AVCodecContext *codec;
709 int64_t packet_st,pts;
711 int flags= pkt->flags;
713 codec = s->streams[pkt->stream_index]->codec;
714 stream = &asf->streams[pkt->stream_index];
716 if(codec->codec_type == CODEC_TYPE_AUDIO)
717 flags &= ~PKT_FLAG_KEY;
719 //XXX /FIXME use duration from AVPacket (quick hack by)
720 pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
721 assert(pts != AV_NOPTS_VALUE);
722 duration = pts * 10000;
723 asf->duration= FFMAX(asf->duration, duration);
725 packet_st = asf->nb_packets;
726 put_frame(s, stream, pkt->dts, pkt->data, pkt->size, flags);
729 if ((!asf->is_streamed) && (flags & PKT_FLAG_KEY)) {
730 start_sec = (int)(duration / INT64_C(10000000));
731 if (start_sec != (int)(asf->last_indexed_pts / INT64_C(10000000))) {
732 for(i=asf->nb_index_count;i<start_sec;i++) {
733 if (i>=asf->nb_index_memory_alloc) {
734 asf->nb_index_memory_alloc += ASF_INDEX_BLOCK;
735 asf->index_ptr = (ASFIndex*)av_realloc( asf->index_ptr, sizeof(ASFIndex) * asf->nb_index_memory_alloc );
738 asf->index_ptr[i].packet_number = (uint32_t)packet_st;
739 asf->index_ptr[i].packet_count = (uint16_t)(asf->nb_packets-packet_st);
740 asf->maximum_packet = FFMAX(asf->maximum_packet, (uint16_t)(asf->nb_packets-packet_st));
742 asf->nb_index_count = start_sec;
743 asf->last_indexed_pts = duration;
750 static int asf_write_index(AVFormatContext *s, ASFIndex *index, uint16_t max, uint32_t count)
752 ByteIOContext *pb = &s->pb;
755 put_guid(pb, &simple_index_header);
756 put_le64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2)*count);
757 put_guid(pb, &my_guid);
758 put_le64(pb, ASF_INDEXED_INTERVAL);
761 for(i=0; i<count; i++) {
762 put_le32(pb, index[i].packet_number);
763 put_le16(pb, index[i].packet_count);
769 static int asf_write_trailer(AVFormatContext *s)
771 ASFContext *asf = s->priv_data;
772 int64_t file_size,data_size;
774 /* flush the current packet */
775 if (asf->pb.buf_ptr > asf->pb.buffer)
779 data_size = url_ftell(&s->pb);
780 if ((!asf->is_streamed) && (asf->nb_index_count != 0)) {
781 asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
783 put_flush_packet(&s->pb);
785 if (asf->is_streamed) {
786 put_chunk(s, 0x4524, 0, 0); /* end of stream */
788 /* rewrite an updated header */
789 file_size = url_ftell(&s->pb);
790 url_fseek(&s->pb, 0, SEEK_SET);
791 asf_write_header1(s, file_size, data_size - asf->data_offset);
794 put_flush_packet(&s->pb);
795 av_free(asf->index_ptr);
799 #ifdef CONFIG_ASF_MUXER
800 AVOutputFormat asf_muxer = {
806 #ifdef CONFIG_LIBMP3LAME
815 .flags = AVFMT_GLOBALHEADER,
816 .codec_tag= (const AVCodecTag*[]){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0},
820 #ifdef CONFIG_ASF_STREAM_MUXER
821 AVOutputFormat asf_stream_muxer = {
827 #ifdef CONFIG_LIBMP3LAME
833 asf_write_stream_header,
836 .flags = AVFMT_GLOBALHEADER,
837 .codec_tag= (const AVCodecTag*[]){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0},
839 #endif //CONFIG_ASF_STREAM_MUXER