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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 #define ASF_INDEXED_INTERVAL 10000000
28 #define ASF_INDEX_BLOCK 600
30 #define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
31 #define ASF_PACKET_ERROR_CORRECTION_FLAGS (\
32 ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
33 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE\
36 #if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0)
37 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1
39 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0
42 #define ASF_PPI_PROPERTY_FLAGS (\
43 ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \
44 ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \
45 ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \
46 ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE \
49 #define ASF_PPI_LENGTH_TYPE_FLAGS 0
51 #define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD
53 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
54 # define ASF_PPI_SEQUENCE_FIELD_SIZE 1
56 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
57 # define ASF_PPI_SEQUENCE_FIELD_SIZE 2
59 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
60 # define ASF_PPI_SEQUENCE_FIELD_SIZE 4
62 #ifndef ASF_PPI_SEQUENCE_FIELD_SIZE
63 # define ASF_PPI_SEQUENCE_FIELD_SIZE 0
67 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
68 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 1
70 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
71 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 2
73 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
74 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 4
76 #ifndef ASF_PPI_PACKET_LENGTH_FIELD_SIZE
77 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 0
80 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
81 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 1
83 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
84 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 2
86 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
87 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 4
89 #ifndef ASF_PPI_PADDING_LENGTH_FIELD_SIZE
90 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 0
93 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
94 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 1
96 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
97 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 2
99 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
100 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 4
102 #ifndef ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE
103 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 0
106 #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))
107 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 1
109 #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))
110 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 2
112 #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))
113 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 4
115 #ifndef ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE
116 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 0
119 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
120 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 1
122 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
123 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 2
125 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
126 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 4
128 #ifndef ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE
129 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 0
132 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
133 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 1
135 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
136 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 2
138 #ifndef ASF_PAYLOAD_LENGTH_FIELD_SIZE
139 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 0
142 #define PACKET_HEADER_MIN_SIZE (\
143 ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE + \
144 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE + \
145 1 + /*Length Type Flags*/ \
146 1 + /*Property Flags*/ \
147 ASF_PPI_PACKET_LENGTH_FIELD_SIZE + \
148 ASF_PPI_SEQUENCE_FIELD_SIZE + \
149 ASF_PPI_PADDING_LENGTH_FIELD_SIZE + \
150 4 + /*Send Time Field*/ \
151 2 /*Duration Field*/ \
155 // Replicated Data shall be at least 8 bytes long.
156 #define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08
158 #define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD (\
159 1 + /*Stream Number*/ \
160 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
161 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
162 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
163 ASF_PAYLOAD_REPLICATED_DATA_LENGTH \
166 #define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS (\
167 1 + /*Stream Number*/ \
168 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
169 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
170 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
171 ASF_PAYLOAD_REPLICATED_DATA_LENGTH + \
172 ASF_PAYLOAD_LENGTH_FIELD_SIZE \
175 #define SINGLE_PAYLOAD_DATA_LENGTH (\
177 PACKET_HEADER_MIN_SIZE - \
178 PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \
181 #define MULTI_PAYLOAD_CONSTANT (\
183 PACKET_HEADER_MIN_SIZE - \
184 1 - /*Payload Flags*/ \
185 2*PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \
188 static int preroll_time = 2000;
190 static const uint8_t error_spread_ADPCM_G726[] = { 0x01, 0x90, 0x01, 0x90, 0x01, 0x01, 0x00, 0x00 };
192 static void put_guid(ByteIOContext *s, const GUID *g)
200 put_byte(s, g->v4[i]);
203 static void put_str16(ByteIOContext *s, const char *tag)
207 put_le16(s,strlen(tag) + 1);
216 static void put_str16_nolen(ByteIOContext *s, const char *tag)
228 static int64_t put_header(ByteIOContext *pb, const GUID *g)
238 /* update header size */
239 static void end_header(ByteIOContext *pb, int64_t pos)
243 pos1 = url_ftell(pb);
244 url_fseek(pb, pos + 16, SEEK_SET);
245 put_le64(pb, pos1 - pos);
246 url_fseek(pb, pos1, SEEK_SET);
249 /* write an asf chunk (only used in streaming case) */
250 static void put_chunk(AVFormatContext *s, int type, int payload_length, int flags)
252 ASFContext *asf = s->priv_data;
253 ByteIOContext *pb = &s->pb;
256 length = payload_length + 8;
258 put_le16(pb, length); //size
259 put_le32(pb, asf->seqno);//sequence number
260 put_le16(pb, flags); /* unknown bytes */
261 put_le16(pb, length); //size_confirm
265 /* convert from unix to windows time */
266 static int64_t unix_to_file_time(int ti)
270 t = ti * int64_t_C(10000000);
271 t += int64_t_C(116444736000000000);
275 /* write the header (used two times if non streamed) */
276 static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size)
278 ASFContext *asf = s->priv_data;
279 ByteIOContext *pb = &s->pb;
280 int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
283 int64_t header_offset, cur_pos, hpos;
287 duration = asf->duration + preroll_time * 10000;
288 has_title = (s->title[0] || s->author[0] || s->copyright[0] || s->comment[0]);
291 for(n=0;n<s->nb_streams;n++) {
292 enc = s->streams[n]->codec;
294 av_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
296 bit_rate += enc->bit_rate;
299 if (asf->is_streamed) {
300 put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
303 put_guid(pb, &asf_header);
304 put_le64(pb, -1); /* header length, will be patched after */
305 put_le32(pb, 3 + has_title + s->nb_streams); /* number of chunks in header */
306 put_byte(pb, 1); /* ??? */
307 put_byte(pb, 2); /* ??? */
310 header_offset = url_ftell(pb);
311 hpos = put_header(pb, &file_header);
312 put_guid(pb, &my_guid);
313 put_le64(pb, file_size);
315 put_le64(pb, unix_to_file_time(file_time));
316 put_le64(pb, asf->nb_packets); /* number of packets */
317 put_le64(pb, duration); /* end time stamp (in 100ns units) */
318 put_le64(pb, duration); /* duration (in 100ns units) */
319 put_le32(pb, preroll_time); /* start time stamp */
320 put_le32(pb, 0); /* ??? */
321 put_le32(pb, asf->is_streamed ? 1 : 0); /* ??? */
322 put_le32(pb, asf->packet_size); /* packet size */
323 put_le32(pb, asf->packet_size); /* packet size */
324 put_le32(pb, bit_rate); /* Nominal data rate in bps */
325 end_header(pb, hpos);
327 /* unknown headers */
328 hpos = put_header(pb, &head1_guid);
329 put_guid(pb, &head2_guid);
332 end_header(pb, hpos);
334 /* title and other infos */
336 hpos = put_header(pb, &comment_header);
337 if ( s->title[0] ) { put_le16(pb, 2 * (strlen(s->title ) + 1)); } else { put_le16(pb, 0); }
338 if ( s->author[0] ) { put_le16(pb, 2 * (strlen(s->author ) + 1)); } else { put_le16(pb, 0); }
339 if ( s->copyright[0] ) { put_le16(pb, 2 * (strlen(s->copyright) + 1)); } else { put_le16(pb, 0); }
340 if ( s->comment[0] ) { put_le16(pb, 2 * (strlen(s->comment ) + 1)); } else { put_le16(pb, 0); }
342 if ( s->title[0] ) put_str16_nolen(pb, s->title);
343 if ( s->author[0] ) put_str16_nolen(pb, s->author);
344 if ( s->copyright[0] ) put_str16_nolen(pb, s->copyright);
345 if ( s->comment[0] ) put_str16_nolen(pb, s->comment);
346 end_header(pb, hpos);
350 for(n=0;n<s->nb_streams;n++) {
352 const uint8_t *er_spr = NULL;
354 // ASFStream *stream = &asf->streams[n];
356 enc = s->streams[n]->codec;
357 asf->streams[n].num = n + 1;
358 asf->streams[n].seq = 0;
361 if (enc->codec_type == CODEC_TYPE_AUDIO) {
362 if (enc->codec_id == CODEC_ID_ADPCM_G726) {
363 er_spr = error_spread_ADPCM_G726;
364 er_spr_len = sizeof(error_spread_ADPCM_G726);
368 switch(enc->codec_type) {
369 case CODEC_TYPE_AUDIO:
371 extra_size = 18 + wav_extra_size;
372 extra_size2 = er_spr_len;
375 case CODEC_TYPE_VIDEO:
376 wav_extra_size = enc->extradata_size;
377 extra_size = 0x33 + wav_extra_size;
382 hpos = put_header(pb, &stream_header);
383 if (enc->codec_type == CODEC_TYPE_AUDIO) {
384 put_guid(pb, &audio_stream);
385 if ((er_spr != NULL) && (er_spr_len != 0)) {
386 put_guid(pb, &audio_conceal_spread);
388 put_guid(pb, &video_conceal_none);
391 put_guid(pb, &video_stream);
392 put_guid(pb, &video_conceal_none);
394 put_le64(pb, 0); /* ??? */
395 es_pos = url_ftell(pb);
396 put_le32(pb, extra_size); /* wav header len */
397 put_le32(pb, extra_size2); /* additional data len */
398 put_le16(pb, n + 1); /* stream number */
399 put_le32(pb, 0); /* ??? */
401 if (enc->codec_type == CODEC_TYPE_AUDIO) {
402 /* WAVEFORMATEX header */
403 int wavsize = put_wav_header(pb, enc);
404 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)) {
411 if (wavsize != extra_size) {
412 cur_pos = url_ftell(pb);
413 url_fseek(pb, es_pos, SEEK_SET);
414 put_le32(pb, wavsize); /* wav header len */
415 url_fseek(pb, cur_pos, SEEK_SET);
417 /* ERROR Correction */
418 if ((er_spr != NULL) && (er_spr_len != 0))
419 put_buffer(pb, er_spr, er_spr_len);
421 put_le32(pb, enc->width);
422 put_le32(pb, enc->height);
423 put_byte(pb, 2); /* ??? */
424 put_le16(pb, 40 + enc->extradata_size); /* size */
426 /* BITMAPINFOHEADER header */
427 put_bmp_header(pb, enc, codec_bmp_tags, 1);
429 end_header(pb, hpos);
434 hpos = put_header(pb, &codec_comment_header);
435 put_guid(pb, &codec_comment1_header);
436 put_le32(pb, s->nb_streams);
437 for(n=0;n<s->nb_streams;n++) {
440 enc = s->streams[n]->codec;
441 p = avcodec_find_encoder(enc->codec_id);
443 put_le16(pb, asf->streams[n].num);
444 put_str16(pb, p ? p->name : enc->codec_name);
445 put_le16(pb, 0); /* no parameters */
449 if (enc->codec_type == CODEC_TYPE_AUDIO) {
452 enc->codec_tag = codec_get_tag(codec_wav_tags, enc->codec_id);
455 put_le16(pb, enc->codec_tag);
459 enc->codec_tag = codec_get_tag(codec_bmp_tags, enc->codec_id);
462 put_le32(pb, enc->codec_tag);
465 end_header(pb, hpos);
467 /* patch the header size fields */
469 cur_pos = url_ftell(pb);
470 header_size = cur_pos - header_offset;
471 if (asf->is_streamed) {
472 header_size += 8 + 30 + 50;
474 url_fseek(pb, header_offset - 10 - 30, SEEK_SET);
475 put_le16(pb, header_size);
476 url_fseek(pb, header_offset - 2 - 30, SEEK_SET);
477 put_le16(pb, header_size);
479 header_size -= 8 + 30 + 50;
481 header_size += 24 + 6;
482 url_fseek(pb, header_offset - 14, SEEK_SET);
483 put_le64(pb, header_size);
484 url_fseek(pb, cur_pos, SEEK_SET);
486 /* movie chunk, followed by packets of packet_size */
487 asf->data_offset = cur_pos;
488 put_guid(pb, &data_header);
489 put_le64(pb, data_chunk_size);
490 put_guid(pb, &my_guid);
491 put_le64(pb, asf->nb_packets); /* nb packets */
492 put_byte(pb, 1); /* ??? */
493 put_byte(pb, 1); /* ??? */
497 static int asf_write_header(AVFormatContext *s)
499 ASFContext *asf = s->priv_data;
501 asf->packet_size = PACKET_SIZE;
504 asf->last_indexed_pts = 0;
505 asf->index_ptr = (ASFIndex*)av_malloc( sizeof(ASFIndex) * ASF_INDEX_BLOCK );
506 asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
507 asf->nb_index_count = 0;
508 asf->maximum_packet = 0;
510 if (asf_write_header1(s, 0, 50) < 0) {
515 put_flush_packet(&s->pb);
517 asf->packet_nb_payloads = 0;
518 asf->prev_packet_sent_time = 0;
519 asf->packet_timestamp_start = -1;
520 asf->packet_timestamp_end = -1;
521 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
522 NULL, NULL, NULL, NULL);
527 static int asf_write_stream_header(AVFormatContext *s)
529 ASFContext *asf = s->priv_data;
531 asf->is_streamed = 1;
533 return asf_write_header(s);
536 static int put_payload_parsing_info(
538 unsigned int sendtime,
539 unsigned int duration,
544 ASFContext *asf = s->priv_data;
545 ByteIOContext *pb = &s->pb;
547 unsigned char *start_ppi_ptr = pb->buf_ptr;
549 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
551 put_byte(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
552 for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++){
556 if (asf->multi_payloads_present)
557 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
561 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
563 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
565 put_byte(pb, iLengthTypeFlags);
567 put_byte(pb, ASF_PPI_PROPERTY_FLAGS);
569 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
570 put_le16(pb, padsize - 2);
571 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
572 put_byte(pb, padsize - 1);
574 put_le32(pb, sendtime);
575 put_le16(pb, duration);
576 if (asf->multi_payloads_present)
577 put_byte(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
579 ppi_size = pb->buf_ptr - start_ppi_ptr;
584 static void flush_packet(AVFormatContext *s)
586 ASFContext *asf = s->priv_data;
587 int packet_hdr_size, packet_filled_size;
589 if (asf->is_streamed) {
590 put_chunk(s, 0x4424, asf->packet_size, 0);
593 packet_hdr_size = put_payload_parsing_info(
595 asf->packet_timestamp_start,
596 asf->packet_timestamp_end - asf->packet_timestamp_start,
597 asf->packet_nb_payloads,
598 asf->packet_size_left
601 packet_filled_size = PACKET_SIZE - packet_hdr_size - asf->packet_size_left;
602 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
604 put_buffer(&s->pb, asf->packet_buf, asf->packet_size - packet_hdr_size);
606 put_flush_packet(&s->pb);
608 asf->packet_nb_payloads = 0;
609 asf->prev_packet_sent_time = asf->packet_timestamp_start;
610 asf->packet_timestamp_start = -1;
611 asf->packet_timestamp_end = -1;
612 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
613 NULL, NULL, NULL, NULL);
616 static void put_payload_header(
619 int presentation_time,
626 ASFContext *asf = s->priv_data;
627 ByteIOContext *pb = &asf->pb;
631 if (flags & PKT_FLAG_KEY)
632 val |= ASF_PL_FLAG_KEY_FRAME;
635 put_byte(pb, stream->seq); //Media object number
636 put_le32(pb, m_obj_offset); //Offset Into Media Object
638 // Replicated Data shall be at least 8 bytes long.
639 // The first 4 bytes of data shall contain the
640 // Size of the Media Object that the payload belongs to.
641 // The next 4 bytes of data shall contain the
642 // Presentation Time for the media object that the payload belongs to.
643 put_byte(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
645 put_le32(pb, m_obj_size); //Replicated Data - Media Object Size
646 put_le32(pb, presentation_time);//Replicated Data - Presentation Time
648 if (asf->multi_payloads_present){
649 put_le16(pb, payload_len); //payload length
653 static void put_frame(
662 ASFContext *asf = s->priv_data;
663 int m_obj_offset, payload_len, frag_len1;
666 while (m_obj_offset < m_obj_size) {
667 payload_len = m_obj_size - m_obj_offset;
668 if (asf->packet_timestamp_start == -1) {
669 asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT);
671 if (asf->multi_payloads_present){
672 asf->packet_size_left = PACKET_SIZE; //For debug
673 asf->packet_size_left = PACKET_SIZE - PACKET_HEADER_MIN_SIZE - 1;
674 frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
677 asf->packet_size_left = PACKET_SIZE - PACKET_HEADER_MIN_SIZE;
678 frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
680 if (asf->prev_packet_sent_time > timestamp)
681 asf->packet_timestamp_start = asf->prev_packet_sent_time;
683 asf->packet_timestamp_start = timestamp;
687 frag_len1 = asf->packet_size_left - PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS;
689 if (asf->prev_packet_sent_time > timestamp)
690 asf->packet_timestamp_start = asf->prev_packet_sent_time;
691 else if (asf->packet_timestamp_start >= timestamp)
692 asf->packet_timestamp_start = timestamp;
695 if (payload_len > frag_len1)
696 payload_len = frag_len1;
697 else if (payload_len == (frag_len1 - 1))
698 payload_len = frag_len1 - 2; //additional byte need to put padding length
700 put_payload_header(s, stream, timestamp+preroll_time, m_obj_size, m_obj_offset, payload_len, flags);
701 put_buffer(&asf->pb, buf, payload_len);
703 if (asf->multi_payloads_present)
704 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
706 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
707 asf->packet_timestamp_end = timestamp;
709 asf->packet_nb_payloads++;
713 m_obj_offset += payload_len;
716 if (!asf->multi_payloads_present)
718 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + 1))
724 static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
726 ASFContext *asf = s->priv_data;
729 AVCodecContext *codec;
730 int64_t packet_st,pts;
733 codec = s->streams[pkt->stream_index]->codec;
734 stream = &asf->streams[pkt->stream_index];
736 //XXX /FIXME use duration from AVPacket (quick hack by)
737 pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
738 if (pts == AV_NOPTS_VALUE) {
739 if (codec->codec_type == CODEC_TYPE_AUDIO) {
740 duration = (codec->frame_number * (int64_t)codec->frame_size * int64_t_C(10000000)) /
743 duration = av_rescale(codec->frame_number * (int64_t)codec->time_base.num, 10000000, codec->time_base.den);
746 duration = pts * 10000;
748 if (duration > asf->duration)
749 asf->duration = duration;
751 packet_st = asf->nb_packets;
752 put_frame(s, stream, pkt->pts, pkt->data, pkt->size, pkt->flags);
755 if ((!asf->is_streamed) && (codec->codec_type == CODEC_TYPE_VIDEO) && (pkt->flags & PKT_FLAG_KEY)) {
756 start_sec = (int)(duration / int64_t_C(10000000));
757 if (start_sec != (int)(asf->last_indexed_pts / int64_t_C(10000000))) {
758 for(i=asf->nb_index_count;i<start_sec;i++) {
759 if (i>=asf->nb_index_memory_alloc) {
760 asf->nb_index_memory_alloc += ASF_INDEX_BLOCK;
761 asf->index_ptr = (ASFIndex*)av_realloc( asf->index_ptr, sizeof(ASFIndex) * asf->nb_index_memory_alloc );
764 asf->index_ptr[i].packet_number = (uint32_t)packet_st;
765 asf->index_ptr[i].packet_count = (uint16_t)(asf->nb_packets-packet_st);
766 if (asf->maximum_packet < (uint16_t)(asf->nb_packets-packet_st))
767 asf->maximum_packet = (uint16_t)(asf->nb_packets-packet_st);
769 asf->nb_index_count = start_sec;
770 asf->last_indexed_pts = duration;
777 static int asf_write_index(AVFormatContext *s, ASFIndex *index, uint16_t max, uint32_t count)
779 ByteIOContext *pb = &s->pb;
782 put_guid(pb, &simple_index_header);
783 put_le64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2)*count);
784 put_guid(pb, &my_guid);
785 put_le64(pb, ASF_INDEXED_INTERVAL);
788 for(i=0; i<count; i++) {
789 put_le32(pb, index[i].packet_number);
790 put_le16(pb, index[i].packet_count);
796 static int asf_write_trailer(AVFormatContext *s)
798 ASFContext *asf = s->priv_data;
799 int64_t file_size,data_size;
801 /* flush the current packet */
802 if (asf->pb.buf_ptr > asf->pb.buffer)
806 data_size = url_ftell(&s->pb);
807 if ((!asf->is_streamed) && (asf->nb_index_count != 0)) {
808 asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
810 put_flush_packet(&s->pb);
812 if (asf->is_streamed) {
813 put_chunk(s, 0x4524, 0, 0); /* end of stream */
815 /* rewrite an updated header */
816 file_size = url_ftell(&s->pb);
817 url_fseek(&s->pb, 0, SEEK_SET);
818 asf_write_header1(s, file_size, data_size - asf->data_offset);
821 put_flush_packet(&s->pb);
822 av_free(asf->index_ptr);
826 #ifdef CONFIG_ASF_MUXER
827 AVOutputFormat asf_muxer = {
833 #ifdef CONFIG_MP3LAME
842 .flags = AVFMT_GLOBALHEADER,
846 #ifdef CONFIG_ASF_STREAM_MUXER
847 AVOutputFormat asf_stream_muxer = {
853 #ifdef CONFIG_MP3LAME
859 asf_write_stream_header,
862 .flags = AVFMT_GLOBALHEADER,
864 #endif //CONFIG_ASF_STREAM_MUXER