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
30 #define ASF_INDEXED_INTERVAL 10000000
31 #define ASF_INDEX_BLOCK 600
33 #define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
34 #define ASF_PACKET_ERROR_CORRECTION_FLAGS (\
35 ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
36 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE\
39 #if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0)
40 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1
42 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0
45 #define ASF_PPI_PROPERTY_FLAGS (\
46 ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \
47 ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \
48 ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \
49 ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE \
52 #define ASF_PPI_LENGTH_TYPE_FLAGS 0
54 #define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD
56 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
57 # define ASF_PPI_SEQUENCE_FIELD_SIZE 1
59 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
60 # define ASF_PPI_SEQUENCE_FIELD_SIZE 2
62 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
63 # define ASF_PPI_SEQUENCE_FIELD_SIZE 4
65 #ifndef ASF_PPI_SEQUENCE_FIELD_SIZE
66 # define ASF_PPI_SEQUENCE_FIELD_SIZE 0
70 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
71 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 1
73 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
74 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 2
76 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
77 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 4
79 #ifndef ASF_PPI_PACKET_LENGTH_FIELD_SIZE
80 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 0
83 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
84 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 1
86 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
87 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 2
89 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
90 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 4
92 #ifndef ASF_PPI_PADDING_LENGTH_FIELD_SIZE
93 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 0
96 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
97 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 1
99 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
100 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 2
102 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
103 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 4
105 #ifndef ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE
106 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 0
109 #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))
110 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 1
112 #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))
113 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 2
115 #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))
116 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 4
118 #ifndef ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE
119 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 0
122 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
123 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 1
125 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
126 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 2
128 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
129 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 4
131 #ifndef ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE
132 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 0
135 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
136 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 1
138 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
139 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 2
141 #ifndef ASF_PAYLOAD_LENGTH_FIELD_SIZE
142 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 0
145 #define PACKET_HEADER_MIN_SIZE (\
146 ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE + \
147 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE + \
148 1 + /*Length Type Flags*/ \
149 1 + /*Property Flags*/ \
150 ASF_PPI_PACKET_LENGTH_FIELD_SIZE + \
151 ASF_PPI_SEQUENCE_FIELD_SIZE + \
152 ASF_PPI_PADDING_LENGTH_FIELD_SIZE + \
153 4 + /*Send Time Field*/ \
154 2 /*Duration Field*/ \
158 // Replicated Data shall be at least 8 bytes long.
159 #define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08
161 #define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD (\
162 1 + /*Stream Number*/ \
163 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
164 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
165 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
166 ASF_PAYLOAD_REPLICATED_DATA_LENGTH \
169 #define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS (\
170 1 + /*Stream Number*/ \
171 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
172 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
173 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
174 ASF_PAYLOAD_REPLICATED_DATA_LENGTH + \
175 ASF_PAYLOAD_LENGTH_FIELD_SIZE \
178 #define SINGLE_PAYLOAD_DATA_LENGTH (\
180 PACKET_HEADER_MIN_SIZE - \
181 PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \
184 #define MULTI_PAYLOAD_CONSTANT (\
186 PACKET_HEADER_MIN_SIZE - \
187 1 - /*Payload Flags*/ \
188 2*PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \
191 static const AVCodecTag codec_asf_bmp_tags[] = {
192 { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
193 { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
194 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
195 { CODEC_ID_NONE, 0 },
198 #define PREROLL_TIME 3100
200 static void put_guid(ByteIOContext *s, const GUID *g)
202 assert(sizeof(*g) == 16);
203 put_buffer(s, *g, sizeof(*g));
206 static void put_str16_nolen(ByteIOContext *s, const char *tag);
207 static void put_str16(ByteIOContext *s, const char *tag)
209 put_le16(s,strlen(tag) + 1);
210 put_str16_nolen(s, tag);
213 static void put_str16_nolen(ByteIOContext *s, const char *tag)
223 static int64_t put_header(ByteIOContext *pb, const GUID *g)
233 /* update header size */
234 static void end_header(ByteIOContext *pb, int64_t pos)
238 pos1 = url_ftell(pb);
239 url_fseek(pb, pos + 16, SEEK_SET);
240 put_le64(pb, pos1 - pos);
241 url_fseek(pb, pos1, SEEK_SET);
244 /* write an asf chunk (only used in streaming case) */
245 static void put_chunk(AVFormatContext *s, int type, int payload_length, int flags)
247 ASFContext *asf = s->priv_data;
248 ByteIOContext *pb = s->pb;
251 length = payload_length + 8;
253 put_le16(pb, length); //size
254 put_le32(pb, asf->seqno);//sequence number
255 put_le16(pb, flags); /* unknown bytes */
256 put_le16(pb, length); //size_confirm
260 /* convert from unix to windows time */
261 static int64_t unix_to_file_time(int ti)
265 t = ti * INT64_C(10000000);
266 t += INT64_C(116444736000000000);
270 /* write the header (used two times if non streamed) */
271 static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size)
273 ASFContext *asf = s->priv_data;
274 ByteIOContext *pb = s->pb;
275 AVMetadataTag *title, *author, *copyright, *comment;
276 int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
280 int64_t header_offset, cur_pos, hpos;
284 title = av_metadata_get(s->metadata, "title" , NULL, 0);
285 author = av_metadata_get(s->metadata, "author" , NULL, 0);
286 copyright = av_metadata_get(s->metadata, "copyright", NULL, 0);
287 comment = av_metadata_get(s->metadata, "comment" , NULL, 0);
289 duration = asf->duration + PREROLL_TIME * 10000;
290 has_title = title || author || copyright || comment;
291 metadata_count = s->metadata ? s->metadata->count : 0;
294 for(n=0;n<s->nb_streams;n++) {
295 enc = s->streams[n]->codec;
297 av_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
299 bit_rate += enc->bit_rate;
302 if (asf->is_streamed) {
303 put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
306 put_guid(pb, &asf_header);
307 put_le64(pb, -1); /* header length, will be patched after */
308 put_le32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */
309 put_byte(pb, 1); /* ??? */
310 put_byte(pb, 2); /* ??? */
313 header_offset = url_ftell(pb);
314 hpos = put_header(pb, &file_header);
315 put_guid(pb, &my_guid);
316 put_le64(pb, file_size);
318 put_le64(pb, unix_to_file_time(file_time));
319 put_le64(pb, asf->nb_packets); /* number of packets */
320 put_le64(pb, duration); /* end time stamp (in 100ns units) */
321 put_le64(pb, asf->duration); /* duration (in 100ns units) */
322 put_le64(pb, PREROLL_TIME); /* start time stamp */
323 put_le32(pb, (asf->is_streamed || url_is_streamed(pb)) ? 3 : 2); /* ??? */
324 put_le32(pb, asf->packet_size); /* packet size */
325 put_le32(pb, asf->packet_size); /* packet size */
326 put_le32(pb, bit_rate); /* Nominal data rate in bps */
327 end_header(pb, hpos);
329 /* unknown headers */
330 hpos = put_header(pb, &head1_guid);
331 put_guid(pb, &head2_guid);
334 end_header(pb, hpos);
336 /* title and other infos */
338 hpos = put_header(pb, &comment_header);
339 put_le16(pb, title ? 2 * (strlen(title->value ) + 1) : 0);
340 put_le16(pb, author ? 2 * (strlen(author->value ) + 1) : 0);
341 put_le16(pb, copyright ? 2 * (strlen(copyright->value) + 1) : 0);
342 put_le16(pb, comment ? 2 * (strlen(comment->value ) + 1) : 0);
344 if (title ) put_str16_nolen(pb, title->value );
345 if (author ) put_str16_nolen(pb, author->value );
346 if (copyright) put_str16_nolen(pb, copyright->value);
347 if (comment ) put_str16_nolen(pb, comment->value );
348 end_header(pb, hpos);
350 if (metadata_count) {
351 AVMetadataTag *tag = NULL;
352 hpos = put_header(pb, &extended_content_header);
353 put_le16(pb, metadata_count);
354 while ((tag = av_metadata_get(s->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX))) {
355 put_le16(pb, 2*(strlen(tag->key) + 3) + 1);
359 put_str16_nolen(pb, tag->key);
361 put_le16(pb, 2*strlen(tag->value) + 1);
362 put_str16_nolen(pb, tag->value);
364 end_header(pb, hpos);
368 for(n=0;n<s->nb_streams;n++) {
370 // ASFStream *stream = &asf->streams[n];
372 enc = s->streams[n]->codec;
373 asf->streams[n].num = n + 1;
374 asf->streams[n].seq = 0;
377 switch(enc->codec_type) {
378 case CODEC_TYPE_AUDIO:
380 extra_size = 18 + wav_extra_size;
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 put_guid(pb, &audio_conceal_spread);
396 put_guid(pb, &video_stream);
397 put_guid(pb, &video_conceal_none);
399 put_le64(pb, 0); /* ??? */
400 es_pos = url_ftell(pb);
401 put_le32(pb, extra_size); /* wav header len */
402 put_le32(pb, extra_size2); /* additional data len */
403 put_le16(pb, n + 1); /* stream number */
404 put_le32(pb, 0); /* ??? */
406 if (enc->codec_type == CODEC_TYPE_AUDIO) {
407 /* WAVEFORMATEX header */
408 int wavsize = put_wav_header(pb, enc);
409 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)) {
416 if (wavsize != extra_size) {
417 cur_pos = url_ftell(pb);
418 url_fseek(pb, es_pos, SEEK_SET);
419 put_le32(pb, wavsize); /* wav header len */
420 url_fseek(pb, cur_pos, SEEK_SET);
422 /* ERROR Correction */
424 if(enc->codec_id == CODEC_ID_ADPCM_G726 || !enc->block_align){
425 put_le16(pb, 0x0190);
426 put_le16(pb, 0x0190);
428 put_le16(pb, enc->block_align);
429 put_le16(pb, enc->block_align);
434 put_le32(pb, enc->width);
435 put_le32(pb, enc->height);
436 put_byte(pb, 2); /* ??? */
437 put_le16(pb, 40 + enc->extradata_size); /* size */
439 /* BITMAPINFOHEADER header */
440 put_bmp_header(pb, enc, codec_bmp_tags, 1);
442 end_header(pb, hpos);
447 hpos = put_header(pb, &codec_comment_header);
448 put_guid(pb, &codec_comment1_header);
449 put_le32(pb, s->nb_streams);
450 for(n=0;n<s->nb_streams;n++) {
453 enc = s->streams[n]->codec;
454 p = avcodec_find_encoder(enc->codec_id);
456 if(enc->codec_type == CODEC_TYPE_AUDIO)
458 else if(enc->codec_type == CODEC_TYPE_VIDEO)
463 if(enc->codec_id == CODEC_ID_WMAV2)
464 put_str16(pb, "Windows Media Audio V8");
466 put_str16(pb, p ? p->name : enc->codec_name);
467 put_le16(pb, 0); /* no parameters */
471 if (enc->codec_type == CODEC_TYPE_AUDIO) {
473 put_le16(pb, enc->codec_tag);
476 put_le32(pb, enc->codec_tag);
481 end_header(pb, hpos);
483 /* patch the header size fields */
485 cur_pos = url_ftell(pb);
486 header_size = cur_pos - header_offset;
487 if (asf->is_streamed) {
488 header_size += 8 + 30 + 50;
490 url_fseek(pb, header_offset - 10 - 30, SEEK_SET);
491 put_le16(pb, header_size);
492 url_fseek(pb, header_offset - 2 - 30, SEEK_SET);
493 put_le16(pb, header_size);
495 header_size -= 8 + 30 + 50;
497 header_size += 24 + 6;
498 url_fseek(pb, header_offset - 14, SEEK_SET);
499 put_le64(pb, header_size);
500 url_fseek(pb, cur_pos, SEEK_SET);
502 /* movie chunk, followed by packets of packet_size */
503 asf->data_offset = cur_pos;
504 put_guid(pb, &data_header);
505 put_le64(pb, data_chunk_size);
506 put_guid(pb, &my_guid);
507 put_le64(pb, asf->nb_packets); /* nb packets */
508 put_byte(pb, 1); /* ??? */
509 put_byte(pb, 1); /* ??? */
513 static int asf_write_header(AVFormatContext *s)
515 ASFContext *asf = s->priv_data;
517 asf->packet_size = PACKET_SIZE;
520 asf->last_indexed_pts = 0;
521 asf->index_ptr = av_malloc( sizeof(ASFIndex) * ASF_INDEX_BLOCK );
522 asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
523 asf->nb_index_count = 0;
524 asf->maximum_packet = 0;
526 /* the data-chunk-size has to be 50, which is data_size - asf->data_offset
527 * at the moment this function is done. It is needed to use asf as
528 * streamable format. */
529 if (asf_write_header1(s, 0, 50) < 0) {
534 put_flush_packet(s->pb);
536 asf->packet_nb_payloads = 0;
537 asf->packet_timestamp_start = -1;
538 asf->packet_timestamp_end = -1;
539 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
540 NULL, NULL, NULL, NULL);
545 static int asf_write_stream_header(AVFormatContext *s)
547 ASFContext *asf = s->priv_data;
549 asf->is_streamed = 1;
551 return asf_write_header(s);
554 static int put_payload_parsing_info(
556 unsigned int sendtime,
557 unsigned int duration,
562 ASFContext *asf = s->priv_data;
563 ByteIOContext *pb = s->pb;
565 int64_t start= url_ftell(pb);
567 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
569 padsize -= PACKET_HEADER_MIN_SIZE;
570 if(asf->multi_payloads_present)
574 put_byte(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
575 for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++){
579 if (asf->multi_payloads_present)
580 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
584 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
586 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
588 put_byte(pb, iLengthTypeFlags);
590 put_byte(pb, ASF_PPI_PROPERTY_FLAGS);
592 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
593 put_le16(pb, padsize - 2);
594 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
595 put_byte(pb, padsize - 1);
597 put_le32(pb, sendtime);
598 put_le16(pb, duration);
599 if (asf->multi_payloads_present)
600 put_byte(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
602 ppi_size = url_ftell(pb) - start;
607 static void flush_packet(AVFormatContext *s)
609 ASFContext *asf = s->priv_data;
610 int packet_hdr_size, packet_filled_size;
612 assert(asf->packet_timestamp_end >= asf->packet_timestamp_start);
614 if (asf->is_streamed) {
615 put_chunk(s, 0x4424, asf->packet_size, 0);
618 packet_hdr_size = put_payload_parsing_info(
620 asf->packet_timestamp_start,
621 asf->packet_timestamp_end - asf->packet_timestamp_start,
622 asf->packet_nb_payloads,
623 asf->packet_size_left
626 packet_filled_size = PACKET_SIZE - asf->packet_size_left;
627 assert(packet_hdr_size <= asf->packet_size_left);
628 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
630 put_buffer(s->pb, asf->packet_buf, asf->packet_size - packet_hdr_size);
632 put_flush_packet(s->pb);
634 asf->packet_nb_payloads = 0;
635 asf->packet_timestamp_start = -1;
636 asf->packet_timestamp_end = -1;
637 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
638 NULL, NULL, NULL, NULL);
641 static void put_payload_header(
644 int presentation_time,
651 ASFContext *asf = s->priv_data;
652 ByteIOContext *pb = &asf->pb;
656 if (flags & PKT_FLAG_KEY)
657 val |= ASF_PL_FLAG_KEY_FRAME;
660 put_byte(pb, stream->seq); //Media object number
661 put_le32(pb, m_obj_offset); //Offset Into Media Object
663 // Replicated Data shall be at least 8 bytes long.
664 // The first 4 bytes of data shall contain the
665 // Size of the Media Object that the payload belongs to.
666 // The next 4 bytes of data shall contain the
667 // Presentation Time for the media object that the payload belongs to.
668 put_byte(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
670 put_le32(pb, m_obj_size); //Replicated Data - Media Object Size
671 put_le32(pb, presentation_time);//Replicated Data - Presentation Time
673 if (asf->multi_payloads_present){
674 put_le16(pb, payload_len); //payload length
678 static void put_frame(
688 ASFContext *asf = s->priv_data;
689 int m_obj_offset, payload_len, frag_len1;
692 while (m_obj_offset < m_obj_size) {
693 payload_len = m_obj_size - m_obj_offset;
694 if (asf->packet_timestamp_start == -1) {
695 asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT);
697 asf->packet_size_left = PACKET_SIZE;
698 if (asf->multi_payloads_present){
699 frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
702 frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
704 asf->packet_timestamp_start = timestamp;
708 frag_len1 = asf->packet_size_left - PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS - PACKET_HEADER_MIN_SIZE - 1;
710 if(frag_len1 < payload_len && avst->codec->codec_type == CODEC_TYPE_AUDIO){
716 if (payload_len > frag_len1)
717 payload_len = frag_len1;
718 else if (payload_len == (frag_len1 - 1))
719 payload_len = frag_len1 - 2; //additional byte need to put padding length
721 put_payload_header(s, stream, timestamp+PREROLL_TIME, m_obj_size, m_obj_offset, payload_len, flags);
722 put_buffer(&asf->pb, buf, payload_len);
724 if (asf->multi_payloads_present)
725 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
727 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
728 asf->packet_timestamp_end = timestamp;
730 asf->packet_nb_payloads++;
734 m_obj_offset += payload_len;
737 if (!asf->multi_payloads_present)
739 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1))
745 static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
747 ASFContext *asf = s->priv_data;
750 AVCodecContext *codec;
751 int64_t packet_st,pts;
753 int flags= pkt->flags;
755 codec = s->streams[pkt->stream_index]->codec;
756 stream = &asf->streams[pkt->stream_index];
758 if(codec->codec_type == CODEC_TYPE_AUDIO)
759 flags &= ~PKT_FLAG_KEY;
761 pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
762 assert(pts != AV_NOPTS_VALUE);
763 duration = pts * 10000;
764 asf->duration= FFMAX(asf->duration, duration + pkt->duration * 10000);
766 packet_st = asf->nb_packets;
767 put_frame(s, stream, s->streams[pkt->stream_index], pkt->dts, pkt->data, pkt->size, flags);
770 if ((!asf->is_streamed) && (flags & PKT_FLAG_KEY)) {
771 start_sec = (int)(duration / INT64_C(10000000));
772 if (start_sec != (int)(asf->last_indexed_pts / INT64_C(10000000))) {
773 for(i=asf->nb_index_count;i<start_sec;i++) {
774 if (i>=asf->nb_index_memory_alloc) {
775 asf->nb_index_memory_alloc += ASF_INDEX_BLOCK;
776 asf->index_ptr = (ASFIndex*)av_realloc( asf->index_ptr, sizeof(ASFIndex) * asf->nb_index_memory_alloc );
779 asf->index_ptr[i].packet_number = (uint32_t)packet_st;
780 asf->index_ptr[i].packet_count = (uint16_t)(asf->nb_packets-packet_st);
781 asf->maximum_packet = FFMAX(asf->maximum_packet, (uint16_t)(asf->nb_packets-packet_st));
783 asf->nb_index_count = start_sec;
784 asf->last_indexed_pts = duration;
791 static int asf_write_index(AVFormatContext *s, ASFIndex *index, uint16_t max, uint32_t count)
793 ByteIOContext *pb = s->pb;
796 put_guid(pb, &simple_index_header);
797 put_le64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2)*count);
798 put_guid(pb, &my_guid);
799 put_le64(pb, ASF_INDEXED_INTERVAL);
802 for(i=0; i<count; i++) {
803 put_le32(pb, index[i].packet_number);
804 put_le16(pb, index[i].packet_count);
810 static int asf_write_trailer(AVFormatContext *s)
812 ASFContext *asf = s->priv_data;
813 int64_t file_size,data_size;
815 /* flush the current packet */
816 if (asf->pb.buf_ptr > asf->pb.buffer)
820 data_size = url_ftell(s->pb);
821 if ((!asf->is_streamed) && (asf->nb_index_count != 0)) {
822 asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
824 put_flush_packet(s->pb);
826 if (asf->is_streamed || url_is_streamed(s->pb)) {
827 put_chunk(s, 0x4524, 0, 0); /* end of stream */
829 /* rewrite an updated header */
830 file_size = url_ftell(s->pb);
831 url_fseek(s->pb, 0, SEEK_SET);
832 asf_write_header1(s, file_size, data_size - asf->data_offset);
835 put_flush_packet(s->pb);
836 av_free(asf->index_ptr);
841 AVOutputFormat asf_muxer = {
843 NULL_IF_CONFIG_SMALL("ASF format"),
847 #if CONFIG_LIBMP3LAME
856 .flags = AVFMT_GLOBALHEADER,
857 .codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0},
861 #if CONFIG_ASF_STREAM_MUXER
862 AVOutputFormat asf_stream_muxer = {
864 NULL_IF_CONFIG_SMALL("ASF format"),
868 #if CONFIG_LIBMP3LAME
874 asf_write_stream_header,
877 .flags = AVFMT_GLOBALHEADER,
878 .codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0},
880 #endif //CONFIG_ASF_STREAM_MUXER