2 * Adaptive stream format encoder
3 * Copyright (c) 2000, 2001 Fabrice Bellard.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #ifdef CONFIG_ENCODERS
28 #define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
29 #define ASF_PACKET_ERROR_CORRECTION_FLAGS (\
30 ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
31 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE\
34 #if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0)
35 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1
37 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0
40 #define ASF_PPI_PROPERTY_FLAGS (\
41 ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \
42 ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \
43 ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \
44 ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE \
47 #define ASF_PPI_LENGTH_TYPE_FLAGS 0
49 #define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD
51 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
52 # define ASF_PPI_SEQUENCE_FIELD_SIZE 1
54 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
55 # define ASF_PPI_SEQUENCE_FIELD_SIZE 2
57 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
58 # define ASF_PPI_SEQUENCE_FIELD_SIZE 4
60 #ifndef ASF_PPI_SEQUENCE_FIELD_SIZE
61 # define ASF_PPI_SEQUENCE_FIELD_SIZE 0
65 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
66 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 1
68 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
69 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 2
71 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
72 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 4
74 #ifndef ASF_PPI_PACKET_LENGTH_FIELD_SIZE
75 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 0
78 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
79 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 1
81 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
82 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 2
84 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
85 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 4
87 #ifndef ASF_PPI_PADDING_LENGTH_FIELD_SIZE
88 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 0
91 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
92 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 1
94 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
95 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 2
97 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
98 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 4
100 #ifndef ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE
101 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 0
104 #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))
105 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 1
107 #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))
108 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 2
110 #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))
111 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 4
113 #ifndef ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE
114 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 0
117 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
118 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 1
120 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
121 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 2
123 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
124 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 4
126 #ifndef ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE
127 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 0
130 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
131 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 1
133 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
134 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 2
136 #ifndef ASF_PAYLOAD_LENGTH_FIELD_SIZE
137 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 0
140 #define PACKET_HEADER_MIN_SIZE (\
141 ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE + \
142 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE + \
143 1 + /*Length Type Flags*/ \
144 1 + /*Property Flags*/ \
145 ASF_PPI_PACKET_LENGTH_FIELD_SIZE + \
146 ASF_PPI_SEQUENCE_FIELD_SIZE + \
147 ASF_PPI_PADDING_LENGTH_FIELD_SIZE + \
148 4 + /*Send Time Field*/ \
149 2 /*Duration Field*/ \
153 // Replicated Data shall be at least 8 bytes long.
154 #define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08
156 #define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD (\
157 1 + /*Stream Number*/ \
158 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
159 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
160 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
161 ASF_PAYLOAD_REPLICATED_DATA_LENGTH \
164 #define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS (\
165 1 + /*Stream Number*/ \
166 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
167 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
168 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
169 ASF_PAYLOAD_REPLICATED_DATA_LENGTH + \
170 ASF_PAYLOAD_LENGTH_FIELD_SIZE \
173 #define SINGLE_PAYLOAD_DATA_LENGTH (\
175 PACKET_HEADER_MIN_SIZE - \
176 PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \
179 #define MULTI_PAYLOAD_CONSTANT (\
181 PACKET_HEADER_MIN_SIZE - \
182 1 - /*Payload Flags*/ \
183 2*PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \
186 static int preroll_time = 2000;
188 static void put_guid(ByteIOContext *s, const GUID *g)
196 put_byte(s, g->v4[i]);
199 static void put_str16(ByteIOContext *s, const char *tag)
203 put_le16(s,strlen(tag) + 1);
212 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_t_C(10000000);
267 t += int64_t_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;
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 bit_rate += enc->bit_rate;
291 if (asf->is_streamed) {
292 put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
295 put_guid(pb, &asf_header);
296 put_le64(pb, -1); /* header length, will be patched after */
297 put_le32(pb, 3 + has_title + s->nb_streams); /* number of chunks in header */
298 put_byte(pb, 1); /* ??? */
299 put_byte(pb, 2); /* ??? */
302 header_offset = url_ftell(pb);
303 hpos = put_header(pb, &file_header);
304 put_guid(pb, &my_guid);
305 put_le64(pb, file_size);
307 put_le64(pb, unix_to_file_time(file_time));
308 put_le64(pb, asf->nb_packets); /* number of packets */
309 put_le64(pb, asf->duration); /* end time stamp (in 100ns units) */
310 put_le64(pb, asf->duration); /* duration (in 100ns units) */
311 put_le32(pb, 0); /* start time stamp */
312 put_le32(pb, 0); /* ??? */
313 put_le32(pb, asf->is_streamed ? 1 : 0); /* ??? */
314 put_le32(pb, asf->packet_size); /* packet size */
315 put_le32(pb, asf->packet_size); /* packet size */
316 put_le32(pb, bit_rate); /* Nominal data rate in bps */
317 end_header(pb, hpos);
319 /* unknown headers */
320 hpos = put_header(pb, &head1_guid);
321 put_guid(pb, &head2_guid);
324 end_header(pb, hpos);
326 /* title and other infos */
328 hpos = put_header(pb, &comment_header);
329 put_le16(pb, 2 * (strlen(s->title) + 1));
330 put_le16(pb, 2 * (strlen(s->author) + 1));
331 put_le16(pb, 2 * (strlen(s->copyright) + 1));
332 put_le16(pb, 2 * (strlen(s->comment) + 1));
334 put_str16_nolen(pb, s->title);
335 put_str16_nolen(pb, s->author);
336 put_str16_nolen(pb, s->copyright);
337 put_str16_nolen(pb, s->comment);
338 end_header(pb, hpos);
342 for(n=0;n<s->nb_streams;n++) {
344 // ASFStream *stream = &asf->streams[n];
346 enc = &s->streams[n]->codec;
347 asf->streams[n].num = n + 1;
348 asf->streams[n].seq = 0;
350 switch(enc->codec_type) {
351 case CODEC_TYPE_AUDIO:
353 extra_size = 18 + wav_extra_size;
357 case CODEC_TYPE_VIDEO:
364 hpos = put_header(pb, &stream_header);
365 if (enc->codec_type == CODEC_TYPE_AUDIO) {
366 put_guid(pb, &audio_stream);
367 put_guid(pb, &audio_conceal_none);
369 put_guid(pb, &video_stream);
370 put_guid(pb, &video_conceal_none);
372 put_le64(pb, 0); /* ??? */
373 es_pos = url_ftell(pb);
374 put_le32(pb, extra_size); /* wav header len */
375 put_le32(pb, extra_size2); /* additional data len */
376 put_le16(pb, n + 1); /* stream number */
377 put_le32(pb, 0); /* ??? */
379 if (enc->codec_type == CODEC_TYPE_AUDIO) {
380 /* WAVEFORMATEX header */
381 int wavsize = put_wav_header(pb, enc);
385 if (wavsize != extra_size) {
386 cur_pos = url_ftell(pb);
387 url_fseek(pb, es_pos, SEEK_SET);
388 put_le32(pb, wavsize); /* wav header len */
389 url_fseek(pb, cur_pos, SEEK_SET);
392 put_le32(pb, enc->width);
393 put_le32(pb, enc->height);
394 put_byte(pb, 2); /* ??? */
395 put_le16(pb, 40); /* size */
397 /* BITMAPINFOHEADER header */
398 put_bmp_header(pb, enc, codec_bmp_tags, 1);
400 end_header(pb, hpos);
405 hpos = put_header(pb, &codec_comment_header);
406 put_guid(pb, &codec_comment1_header);
407 put_le32(pb, s->nb_streams);
408 for(n=0;n<s->nb_streams;n++) {
411 enc = &s->streams[n]->codec;
412 p = avcodec_find_encoder(enc->codec_id);
414 put_le16(pb, asf->streams[n].num);
415 put_str16(pb, p ? p->name : enc->codec_name);
416 put_le16(pb, 0); /* no parameters */
420 if (enc->codec_type == CODEC_TYPE_AUDIO) {
423 enc->codec_tag = codec_get_tag(codec_wav_tags, enc->codec_id);
426 put_le16(pb, enc->codec_tag);
430 enc->codec_tag = codec_get_tag(codec_bmp_tags, enc->codec_id);
433 put_le32(pb, enc->codec_tag);
436 end_header(pb, hpos);
438 /* patch the header size fields */
440 cur_pos = url_ftell(pb);
441 header_size = cur_pos - header_offset;
442 if (asf->is_streamed) {
443 header_size += 8 + 30 + 50;
445 url_fseek(pb, header_offset - 10 - 30, SEEK_SET);
446 put_le16(pb, header_size);
447 url_fseek(pb, header_offset - 2 - 30, SEEK_SET);
448 put_le16(pb, header_size);
450 header_size -= 8 + 30 + 50;
452 header_size += 24 + 6;
453 url_fseek(pb, header_offset - 14, SEEK_SET);
454 put_le64(pb, header_size);
455 url_fseek(pb, cur_pos, SEEK_SET);
457 /* movie chunk, followed by packets of packet_size */
458 asf->data_offset = cur_pos;
459 put_guid(pb, &data_header);
460 put_le64(pb, data_chunk_size);
461 put_guid(pb, &my_guid);
462 put_le64(pb, asf->nb_packets); /* nb packets */
463 put_byte(pb, 1); /* ??? */
464 put_byte(pb, 1); /* ??? */
468 static int asf_write_header(AVFormatContext *s)
470 ASFContext *asf = s->priv_data;
472 av_set_pts_info(s, 32, 1, 1000); /* 32 bit pts in ms */
474 asf->packet_size = PACKET_SIZE;
477 if (asf_write_header1(s, 0, 50) < 0) {
482 put_flush_packet(&s->pb);
484 asf->packet_nb_payloads = 0;
485 asf->prev_packet_sent_time = 0;
486 asf->packet_timestamp_start = -1;
487 asf->packet_timestamp_end = -1;
488 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
489 NULL, NULL, NULL, NULL);
494 static int asf_write_stream_header(AVFormatContext *s)
496 ASFContext *asf = s->priv_data;
498 asf->is_streamed = 1;
500 return asf_write_header(s);
503 static int put_payload_parsing_info(
505 unsigned int sendtime,
506 unsigned int duration,
511 ASFContext *asf = s->priv_data;
512 ByteIOContext *pb = &s->pb;
514 unsigned char *start_ppi_ptr = pb->buf_ptr;
516 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
518 put_byte(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
519 for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++){
523 if (asf->multi_payloads_present)
524 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
528 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
530 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
532 put_byte(pb, iLengthTypeFlags);
534 put_byte(pb, ASF_PPI_PROPERTY_FLAGS);
536 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
537 put_le16(pb, padsize - 2);
538 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
539 put_byte(pb, padsize - 1);
541 put_le32(pb, sendtime);
542 put_le16(pb, duration);
543 if (asf->multi_payloads_present)
544 put_byte(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
546 ppi_size = pb->buf_ptr - start_ppi_ptr;
551 static void flush_packet(AVFormatContext *s)
553 ASFContext *asf = s->priv_data;
554 int packet_hdr_size, packet_filled_size;
556 if (asf->is_streamed) {
557 put_chunk(s, 0x4424, asf->packet_size, 0);
560 packet_hdr_size = put_payload_parsing_info(
562 asf->packet_timestamp_start,
563 asf->packet_timestamp_end - asf->packet_timestamp_start,
564 asf->packet_nb_payloads,
565 asf->packet_size_left
568 packet_filled_size = PACKET_SIZE - packet_hdr_size - asf->packet_size_left;
569 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
571 put_buffer(&s->pb, asf->packet_buf, asf->packet_size - packet_hdr_size);
573 put_flush_packet(&s->pb);
575 asf->packet_nb_payloads = 0;
576 asf->prev_packet_sent_time = asf->packet_timestamp_start;
577 asf->packet_timestamp_start = -1;
578 asf->packet_timestamp_end = -1;
579 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
580 NULL, NULL, NULL, NULL);
583 static void put_payload_header(
586 int presentation_time,
592 ASFContext *asf = s->priv_data;
593 ByteIOContext *pb = &asf->pb;
597 if (s->streams[val - 1]->codec.coded_frame->key_frame)
598 val |= ASF_PL_FLAG_KEY_FRAME;
601 put_byte(pb, stream->seq); //Media object number
602 put_le32(pb, m_obj_offset); //Offset Into Media Object
604 // Replicated Data shall be at least 8 bytes long.
605 // The first 4 bytes of data shall contain the
606 // Size of the Media Object that the payload belongs to.
607 // The next 4 bytes of data shall contain the
608 // Presentation Time for the media object that the payload belongs to.
609 put_byte(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
611 put_le32(pb, m_obj_size); //Replicated Data - Media Object Size
612 put_le32(pb, presentation_time);//Replicated Data - Presentation Time
614 if (asf->multi_payloads_present){
615 put_le16(pb, payload_len); //payload length
619 static void put_frame(
627 ASFContext *asf = s->priv_data;
628 int m_obj_offset, payload_len, frag_len1;
631 while (m_obj_offset < m_obj_size) {
632 payload_len = m_obj_size - m_obj_offset;
633 if (asf->packet_timestamp_start == -1) {
634 asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT);
636 if (asf->multi_payloads_present){
637 asf->packet_size_left = PACKET_SIZE; //For debug
638 asf->packet_size_left = PACKET_SIZE - PACKET_HEADER_MIN_SIZE - 1;
639 frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
642 asf->packet_size_left = PACKET_SIZE - PACKET_HEADER_MIN_SIZE;
643 frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
645 if (asf->prev_packet_sent_time > timestamp)
646 asf->packet_timestamp_start = asf->prev_packet_sent_time;
648 asf->packet_timestamp_start = timestamp;
652 frag_len1 = asf->packet_size_left - PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS;
654 if (asf->prev_packet_sent_time > timestamp)
655 asf->packet_timestamp_start = asf->prev_packet_sent_time;
656 else if (asf->packet_timestamp_start >= timestamp)
657 asf->packet_timestamp_start = timestamp;
660 if (payload_len > frag_len1)
661 payload_len = frag_len1;
662 else if (payload_len == (frag_len1 - 1))
663 payload_len = frag_len1 - 2; //additional byte need to put padding length
665 put_payload_header(s, stream, timestamp+preroll_time, m_obj_size, m_obj_offset, payload_len);
666 put_buffer(&asf->pb, buf, payload_len);
668 if (asf->multi_payloads_present)
669 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
671 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
672 asf->packet_timestamp_end = timestamp;
674 asf->packet_nb_payloads++;
678 m_obj_offset += payload_len;
681 if (!asf->multi_payloads_present)
683 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + 1))
689 static int asf_write_packet(AVFormatContext *s, int stream_index,
690 const uint8_t *buf, int size, int64_t timestamp)
692 ASFContext *asf = s->priv_data;
695 AVCodecContext *codec;
697 codec = &s->streams[stream_index]->codec;
698 stream = &asf->streams[stream_index];
700 if (codec->codec_type == CODEC_TYPE_AUDIO) {
701 duration = (codec->frame_number * codec->frame_size * int64_t_C(10000000)) /
704 duration = av_rescale(codec->frame_number * codec->frame_rate_base, 10000000, codec->frame_rate);
706 if (duration > asf->duration)
707 asf->duration = duration;
709 put_frame(s, stream, timestamp, buf, size);
713 static int asf_write_trailer(AVFormatContext *s)
715 ASFContext *asf = s->priv_data;
718 /* flush the current packet */
719 if (asf->pb.buf_ptr > asf->pb.buffer)
722 if (asf->is_streamed) {
723 put_chunk(s, 0x4524, 0, 0); /* end of stream */
725 /* rewrite an updated header */
726 file_size = url_ftell(&s->pb);
727 url_fseek(&s->pb, 0, SEEK_SET);
728 asf_write_header1(s, file_size, file_size - asf->data_offset);
731 put_flush_packet(&s->pb);
735 AVOutputFormat asf_oformat = {
741 #ifdef CONFIG_MP3LAME
752 AVOutputFormat asf_stream_oformat = {
758 #ifdef CONFIG_MP3LAME
764 asf_write_stream_header,
768 #endif //CONFIG_ENCODERS