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 \
194 ASFStream streams[128]; ///< it's max number and it's not that big
195 /* non streamed additonnal info */
196 uint64_t nb_packets; ///< how many packets are there in the file, invalid if broadcasting
197 int64_t duration; ///< in 100ns units
199 unsigned char multi_payloads_present;
200 int packet_size_left;
201 int packet_timestamp_start;
202 int packet_timestamp_end;
203 unsigned int packet_nb_payloads;
204 uint8_t packet_buf[PACKET_SIZE];
206 /* only for reading */
207 uint64_t data_offset; ///< beginning of the first data packet
209 int64_t last_indexed_pts;
211 uint32_t nb_index_count;
212 uint32_t nb_index_memory_alloc;
213 uint16_t maximum_packet;
216 static const AVCodecTag codec_asf_bmp_tags[] = {
217 { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
218 { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
219 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
220 { CODEC_ID_NONE, 0 },
223 #define PREROLL_TIME 3100
225 static void put_guid(ByteIOContext *s, const ff_asf_guid *g)
227 assert(sizeof(*g) == 16);
228 put_buffer(s, *g, sizeof(*g));
231 static void put_str16(ByteIOContext *s, const char *tag)
235 ByteIOContext *dyn_buf;
236 if (url_open_dyn_buf(&dyn_buf) < 0)
239 avio_put_str16le(dyn_buf, tag);
240 len = url_close_dyn_buf(dyn_buf, &pb);
242 put_buffer(s, pb, len);
246 static int64_t put_header(ByteIOContext *pb, const ff_asf_guid *g)
256 /* update header size */
257 static void end_header(ByteIOContext *pb, int64_t pos)
261 pos1 = url_ftell(pb);
262 url_fseek(pb, pos + 16, SEEK_SET);
263 put_le64(pb, pos1 - pos);
264 url_fseek(pb, pos1, SEEK_SET);
267 /* write an asf chunk (only used in streaming case) */
268 static void put_chunk(AVFormatContext *s, int type, int payload_length, int flags)
270 ASFContext *asf = s->priv_data;
271 ByteIOContext *pb = s->pb;
274 length = payload_length + 8;
276 put_le16(pb, length); //size
277 put_le32(pb, asf->seqno);//sequence number
278 put_le16(pb, flags); /* unknown bytes */
279 put_le16(pb, length); //size_confirm
283 /* convert from unix to windows time */
284 static int64_t unix_to_file_time(int ti)
288 t = ti * INT64_C(10000000);
289 t += INT64_C(116444736000000000);
293 /* write the header (used two times if non streamed) */
294 static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size)
296 ASFContext *asf = s->priv_data;
297 ByteIOContext *pb = s->pb;
298 AVMetadataTag *tags[5];
299 int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
303 int64_t header_offset, cur_pos, hpos;
307 ff_metadata_conv(&s->metadata, ff_asf_metadata_conv, NULL);
309 tags[0] = av_metadata_get(s->metadata, "title" , NULL, 0);
310 tags[1] = av_metadata_get(s->metadata, "author" , NULL, 0);
311 tags[2] = av_metadata_get(s->metadata, "copyright", NULL, 0);
312 tags[3] = av_metadata_get(s->metadata, "comment" , NULL, 0);
313 tags[4] = av_metadata_get(s->metadata, "rating" , NULL, 0);
315 duration = asf->duration + PREROLL_TIME * 10000;
316 has_title = tags[0] || tags[1] || tags[2] || tags[3] || tags[4];
317 metadata_count = s->metadata ? s->metadata->count : 0;
320 for(n=0;n<s->nb_streams;n++) {
321 enc = s->streams[n]->codec;
323 av_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
325 bit_rate += enc->bit_rate;
328 if (asf->is_streamed) {
329 put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
332 put_guid(pb, &ff_asf_header);
333 put_le64(pb, -1); /* header length, will be patched after */
334 put_le32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */
335 put_byte(pb, 1); /* ??? */
336 put_byte(pb, 2); /* ??? */
339 header_offset = url_ftell(pb);
340 hpos = put_header(pb, &ff_asf_file_header);
341 put_guid(pb, &ff_asf_my_guid);
342 put_le64(pb, file_size);
344 put_le64(pb, unix_to_file_time(file_time));
345 put_le64(pb, asf->nb_packets); /* number of packets */
346 put_le64(pb, duration); /* end time stamp (in 100ns units) */
347 put_le64(pb, asf->duration); /* duration (in 100ns units) */
348 put_le64(pb, PREROLL_TIME); /* start time stamp */
349 put_le32(pb, (asf->is_streamed || url_is_streamed(pb)) ? 3 : 2); /* ??? */
350 put_le32(pb, s->packet_size); /* packet size */
351 put_le32(pb, s->packet_size); /* packet size */
352 put_le32(pb, bit_rate); /* Nominal data rate in bps */
353 end_header(pb, hpos);
355 /* unknown headers */
356 hpos = put_header(pb, &ff_asf_head1_guid);
357 put_guid(pb, &ff_asf_head2_guid);
360 end_header(pb, hpos);
362 /* title and other infos */
366 ByteIOContext *dyn_buf;
368 if (url_open_dyn_buf(&dyn_buf) < 0)
369 return AVERROR(ENOMEM);
371 hpos = put_header(pb, &ff_asf_comment_header);
373 for (n = 0; n < FF_ARRAY_ELEMS(tags); n++) {
374 len = tags[n] ? avio_put_str16le(dyn_buf, tags[n]->value) : 0;
377 len = url_close_dyn_buf(dyn_buf, &buf);
378 put_buffer(pb, buf, len);
380 end_header(pb, hpos);
382 if (metadata_count) {
383 AVMetadataTag *tag = NULL;
384 hpos = put_header(pb, &ff_asf_extended_content_header);
385 put_le16(pb, metadata_count);
386 while ((tag = av_metadata_get(s->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX))) {
387 put_str16(pb, tag->key);
389 put_str16(pb, tag->value);
391 end_header(pb, hpos);
395 for(n=0;n<s->nb_streams;n++) {
397 // ASFStream *stream = &asf->streams[n];
399 enc = s->streams[n]->codec;
400 asf->streams[n].num = n + 1;
401 asf->streams[n].seq = 0;
404 switch(enc->codec_type) {
405 case AVMEDIA_TYPE_AUDIO:
407 extra_size = 18 + wav_extra_size;
411 case AVMEDIA_TYPE_VIDEO:
412 wav_extra_size = enc->extradata_size;
413 extra_size = 0x33 + wav_extra_size;
418 hpos = put_header(pb, &ff_asf_stream_header);
419 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
420 put_guid(pb, &ff_asf_audio_stream);
421 put_guid(pb, &ff_asf_audio_conceal_spread);
423 put_guid(pb, &ff_asf_video_stream);
424 put_guid(pb, &ff_asf_video_conceal_none);
426 put_le64(pb, 0); /* ??? */
427 es_pos = url_ftell(pb);
428 put_le32(pb, extra_size); /* wav header len */
429 put_le32(pb, extra_size2); /* additional data len */
430 put_le16(pb, n + 1); /* stream number */
431 put_le32(pb, 0); /* ??? */
433 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
434 /* WAVEFORMATEX header */
435 int wavsize = ff_put_wav_header(pb, enc);
436 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)) {
443 if (wavsize != extra_size) {
444 cur_pos = url_ftell(pb);
445 url_fseek(pb, es_pos, SEEK_SET);
446 put_le32(pb, wavsize); /* wav header len */
447 url_fseek(pb, cur_pos, SEEK_SET);
449 /* ERROR Correction */
451 if(enc->codec_id == CODEC_ID_ADPCM_G726 || !enc->block_align){
452 put_le16(pb, 0x0190);
453 put_le16(pb, 0x0190);
455 put_le16(pb, enc->block_align);
456 put_le16(pb, enc->block_align);
461 put_le32(pb, enc->width);
462 put_le32(pb, enc->height);
463 put_byte(pb, 2); /* ??? */
464 put_le16(pb, 40 + enc->extradata_size); /* size */
466 /* BITMAPINFOHEADER header */
467 ff_put_bmp_header(pb, enc, ff_codec_bmp_tags, 1);
469 end_header(pb, hpos);
474 hpos = put_header(pb, &ff_asf_codec_comment_header);
475 put_guid(pb, &ff_asf_codec_comment1_header);
476 put_le32(pb, s->nb_streams);
477 for(n=0;n<s->nb_streams;n++) {
482 ByteIOContext *dyn_buf;
484 enc = s->streams[n]->codec;
485 p = avcodec_find_encoder(enc->codec_id);
487 if(enc->codec_type == AVMEDIA_TYPE_AUDIO)
489 else if(enc->codec_type == AVMEDIA_TYPE_VIDEO)
494 if(enc->codec_id == CODEC_ID_WMAV2)
495 desc = "Windows Media Audio V8";
497 desc = p ? p->name : enc->codec_name;
499 if ( url_open_dyn_buf(&dyn_buf) < 0)
500 return AVERROR(ENOMEM);
502 avio_put_str16le(dyn_buf, desc);
503 len = url_close_dyn_buf(dyn_buf, &buf);
504 put_le16(pb, len / 2); // "number of characters" = length in bytes / 2
506 put_buffer(pb, buf, len);
509 put_le16(pb, 0); /* no parameters */
513 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
515 put_le16(pb, enc->codec_tag);
518 put_le32(pb, enc->codec_tag);
523 end_header(pb, hpos);
525 /* patch the header size fields */
527 cur_pos = url_ftell(pb);
528 header_size = cur_pos - header_offset;
529 if (asf->is_streamed) {
530 header_size += 8 + 30 + 50;
532 url_fseek(pb, header_offset - 10 - 30, SEEK_SET);
533 put_le16(pb, header_size);
534 url_fseek(pb, header_offset - 2 - 30, SEEK_SET);
535 put_le16(pb, header_size);
537 header_size -= 8 + 30 + 50;
539 header_size += 24 + 6;
540 url_fseek(pb, header_offset - 14, SEEK_SET);
541 put_le64(pb, header_size);
542 url_fseek(pb, cur_pos, SEEK_SET);
544 /* movie chunk, followed by packets of packet_size */
545 asf->data_offset = cur_pos;
546 put_guid(pb, &ff_asf_data_header);
547 put_le64(pb, data_chunk_size);
548 put_guid(pb, &ff_asf_my_guid);
549 put_le64(pb, asf->nb_packets); /* nb packets */
550 put_byte(pb, 1); /* ??? */
551 put_byte(pb, 1); /* ??? */
555 static int asf_write_header(AVFormatContext *s)
557 ASFContext *asf = s->priv_data;
559 s->packet_size = PACKET_SIZE;
562 asf->last_indexed_pts = 0;
563 asf->index_ptr = av_malloc( sizeof(ASFIndex) * ASF_INDEX_BLOCK );
564 asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
565 asf->nb_index_count = 0;
566 asf->maximum_packet = 0;
568 /* the data-chunk-size has to be 50, which is data_size - asf->data_offset
569 * at the moment this function is done. It is needed to use asf as
570 * streamable format. */
571 if (asf_write_header1(s, 0, 50) < 0) {
576 put_flush_packet(s->pb);
578 asf->packet_nb_payloads = 0;
579 asf->packet_timestamp_start = -1;
580 asf->packet_timestamp_end = -1;
581 init_put_byte(&asf->pb, asf->packet_buf, s->packet_size, 1,
582 NULL, NULL, NULL, NULL);
587 static int asf_write_stream_header(AVFormatContext *s)
589 ASFContext *asf = s->priv_data;
591 asf->is_streamed = 1;
593 return asf_write_header(s);
596 static int put_payload_parsing_info(
598 unsigned int sendtime,
599 unsigned int duration,
604 ASFContext *asf = s->priv_data;
605 ByteIOContext *pb = s->pb;
607 int64_t start= url_ftell(pb);
609 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
611 padsize -= PACKET_HEADER_MIN_SIZE;
612 if(asf->multi_payloads_present)
616 put_byte(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
617 for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++){
621 if (asf->multi_payloads_present)
622 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
626 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
628 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
630 put_byte(pb, iLengthTypeFlags);
632 put_byte(pb, ASF_PPI_PROPERTY_FLAGS);
634 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
635 put_le16(pb, padsize - 2);
636 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
637 put_byte(pb, padsize - 1);
639 put_le32(pb, sendtime);
640 put_le16(pb, duration);
641 if (asf->multi_payloads_present)
642 put_byte(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
644 ppi_size = url_ftell(pb) - start;
649 static void flush_packet(AVFormatContext *s)
651 ASFContext *asf = s->priv_data;
652 int packet_hdr_size, packet_filled_size;
654 assert(asf->packet_timestamp_end >= asf->packet_timestamp_start);
656 if (asf->is_streamed) {
657 put_chunk(s, 0x4424, s->packet_size, 0);
660 packet_hdr_size = put_payload_parsing_info(
662 asf->packet_timestamp_start,
663 asf->packet_timestamp_end - asf->packet_timestamp_start,
664 asf->packet_nb_payloads,
665 asf->packet_size_left
668 packet_filled_size = PACKET_SIZE - asf->packet_size_left;
669 assert(packet_hdr_size <= asf->packet_size_left);
670 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
672 put_buffer(s->pb, asf->packet_buf, s->packet_size - packet_hdr_size);
674 put_flush_packet(s->pb);
676 asf->packet_nb_payloads = 0;
677 asf->packet_timestamp_start = -1;
678 asf->packet_timestamp_end = -1;
679 init_put_byte(&asf->pb, asf->packet_buf, s->packet_size, 1,
680 NULL, NULL, NULL, NULL);
683 static void put_payload_header(
686 int presentation_time,
693 ASFContext *asf = s->priv_data;
694 ByteIOContext *pb = &asf->pb;
698 if (flags & AV_PKT_FLAG_KEY)
699 val |= ASF_PL_FLAG_KEY_FRAME;
702 put_byte(pb, stream->seq); //Media object number
703 put_le32(pb, m_obj_offset); //Offset Into Media Object
705 // Replicated Data shall be at least 8 bytes long.
706 // The first 4 bytes of data shall contain the
707 // Size of the Media Object that the payload belongs to.
708 // The next 4 bytes of data shall contain the
709 // Presentation Time for the media object that the payload belongs to.
710 put_byte(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
712 put_le32(pb, m_obj_size); //Replicated Data - Media Object Size
713 put_le32(pb, presentation_time);//Replicated Data - Presentation Time
715 if (asf->multi_payloads_present){
716 put_le16(pb, payload_len); //payload length
720 static void put_frame(
730 ASFContext *asf = s->priv_data;
731 int m_obj_offset, payload_len, frag_len1;
734 while (m_obj_offset < m_obj_size) {
735 payload_len = m_obj_size - m_obj_offset;
736 if (asf->packet_timestamp_start == -1) {
737 asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT);
739 asf->packet_size_left = PACKET_SIZE;
740 if (asf->multi_payloads_present){
741 frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
744 frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
746 asf->packet_timestamp_start = timestamp;
750 frag_len1 = asf->packet_size_left - PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS - PACKET_HEADER_MIN_SIZE - 1;
752 if(frag_len1 < payload_len && avst->codec->codec_type == AVMEDIA_TYPE_AUDIO){
758 if (payload_len > frag_len1)
759 payload_len = frag_len1;
760 else if (payload_len == (frag_len1 - 1))
761 payload_len = frag_len1 - 2; //additional byte need to put padding length
763 put_payload_header(s, stream, timestamp+PREROLL_TIME, m_obj_size, m_obj_offset, payload_len, flags);
764 put_buffer(&asf->pb, buf, payload_len);
766 if (asf->multi_payloads_present)
767 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
769 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
770 asf->packet_timestamp_end = timestamp;
772 asf->packet_nb_payloads++;
776 m_obj_offset += payload_len;
779 if (!asf->multi_payloads_present)
781 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1))
787 static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
789 ASFContext *asf = s->priv_data;
792 AVCodecContext *codec;
793 int64_t packet_st,pts;
795 int flags= pkt->flags;
797 codec = s->streams[pkt->stream_index]->codec;
798 stream = &asf->streams[pkt->stream_index];
800 if(codec->codec_type == AVMEDIA_TYPE_AUDIO)
801 flags &= ~AV_PKT_FLAG_KEY;
803 pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
804 assert(pts != AV_NOPTS_VALUE);
805 duration = pts * 10000;
806 asf->duration= FFMAX(asf->duration, duration + pkt->duration * 10000);
808 packet_st = asf->nb_packets;
809 put_frame(s, stream, s->streams[pkt->stream_index], pkt->dts, pkt->data, pkt->size, flags);
812 if ((!asf->is_streamed) && (flags & AV_PKT_FLAG_KEY)) {
813 start_sec = (int)(duration / INT64_C(10000000));
814 if (start_sec != (int)(asf->last_indexed_pts / INT64_C(10000000))) {
815 for(i=asf->nb_index_count;i<start_sec;i++) {
816 if (i>=asf->nb_index_memory_alloc) {
817 asf->nb_index_memory_alloc += ASF_INDEX_BLOCK;
818 asf->index_ptr = (ASFIndex*)av_realloc( asf->index_ptr, sizeof(ASFIndex) * asf->nb_index_memory_alloc );
821 asf->index_ptr[i].packet_number = (uint32_t)packet_st;
822 asf->index_ptr[i].packet_count = (uint16_t)(asf->nb_packets-packet_st);
823 asf->maximum_packet = FFMAX(asf->maximum_packet, (uint16_t)(asf->nb_packets-packet_st));
825 asf->nb_index_count = start_sec;
826 asf->last_indexed_pts = duration;
833 static int asf_write_index(AVFormatContext *s, ASFIndex *index, uint16_t max, uint32_t count)
835 ByteIOContext *pb = s->pb;
838 put_guid(pb, &ff_asf_simple_index_header);
839 put_le64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2)*count);
840 put_guid(pb, &ff_asf_my_guid);
841 put_le64(pb, ASF_INDEXED_INTERVAL);
844 for(i=0; i<count; i++) {
845 put_le32(pb, index[i].packet_number);
846 put_le16(pb, index[i].packet_count);
852 static int asf_write_trailer(AVFormatContext *s)
854 ASFContext *asf = s->priv_data;
855 int64_t file_size,data_size;
857 /* flush the current packet */
858 if (asf->pb.buf_ptr > asf->pb.buffer)
862 data_size = url_ftell(s->pb);
863 if ((!asf->is_streamed) && (asf->nb_index_count != 0)) {
864 asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
866 put_flush_packet(s->pb);
868 if (asf->is_streamed || url_is_streamed(s->pb)) {
869 put_chunk(s, 0x4524, 0, 0); /* end of stream */
871 /* rewrite an updated header */
872 file_size = url_ftell(s->pb);
873 url_fseek(s->pb, 0, SEEK_SET);
874 asf_write_header1(s, file_size, data_size - asf->data_offset);
877 put_flush_packet(s->pb);
878 av_free(asf->index_ptr);
883 AVOutputFormat ff_asf_muxer = {
885 NULL_IF_CONFIG_SMALL("ASF format"),
889 #if CONFIG_LIBMP3LAME
898 .flags = AVFMT_GLOBALHEADER,
899 .codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0},
903 #if CONFIG_ASF_STREAM_MUXER
904 AVOutputFormat ff_asf_stream_muxer = {
906 NULL_IF_CONFIG_SMALL("ASF format"),
910 #if CONFIG_LIBMP3LAME
916 asf_write_stream_header,
919 .flags = AVFMT_GLOBALHEADER,
920 .codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0},
922 #endif //CONFIG_ASF_STREAM_MUXER