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 ff_asf_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)
216 static int64_t put_header(ByteIOContext *pb, const ff_asf_guid *g)
226 /* update header size */
227 static void end_header(ByteIOContext *pb, int64_t pos)
231 pos1 = url_ftell(pb);
232 url_fseek(pb, pos + 16, SEEK_SET);
233 put_le64(pb, pos1 - pos);
234 url_fseek(pb, pos1, SEEK_SET);
237 /* write an asf chunk (only used in streaming case) */
238 static void put_chunk(AVFormatContext *s, int type, int payload_length, int flags)
240 ASFContext *asf = s->priv_data;
241 ByteIOContext *pb = s->pb;
244 length = payload_length + 8;
246 put_le16(pb, length); //size
247 put_le32(pb, asf->seqno);//sequence number
248 put_le16(pb, flags); /* unknown bytes */
249 put_le16(pb, length); //size_confirm
253 /* convert from unix to windows time */
254 static int64_t unix_to_file_time(int ti)
258 t = ti * INT64_C(10000000);
259 t += INT64_C(116444736000000000);
263 /* write the header (used two times if non streamed) */
264 static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size)
266 ASFContext *asf = s->priv_data;
267 ByteIOContext *pb = s->pb;
268 AVMetadataTag *title, *author, *copyright, *comment;
269 int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
273 int64_t header_offset, cur_pos, hpos;
277 title = av_metadata_get(s->metadata, "title" , NULL, 0);
278 author = av_metadata_get(s->metadata, "author" , NULL, 0);
279 copyright = av_metadata_get(s->metadata, "copyright", NULL, 0);
280 comment = av_metadata_get(s->metadata, "comment" , NULL, 0);
282 duration = asf->duration + PREROLL_TIME * 10000;
283 has_title = title || author || copyright || comment;
284 metadata_count = s->metadata ? s->metadata->count : 0;
287 for(n=0;n<s->nb_streams;n++) {
288 enc = s->streams[n]->codec;
290 av_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
292 bit_rate += enc->bit_rate;
295 if (asf->is_streamed) {
296 put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
299 put_guid(pb, &ff_asf_header);
300 put_le64(pb, -1); /* header length, will be patched after */
301 put_le32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */
302 put_byte(pb, 1); /* ??? */
303 put_byte(pb, 2); /* ??? */
306 header_offset = url_ftell(pb);
307 hpos = put_header(pb, &ff_asf_file_header);
308 put_guid(pb, &ff_asf_my_guid);
309 put_le64(pb, file_size);
311 put_le64(pb, unix_to_file_time(file_time));
312 put_le64(pb, asf->nb_packets); /* number of packets */
313 put_le64(pb, duration); /* end time stamp (in 100ns units) */
314 put_le64(pb, asf->duration); /* duration (in 100ns units) */
315 put_le64(pb, PREROLL_TIME); /* start time stamp */
316 put_le32(pb, (asf->is_streamed || url_is_streamed(pb)) ? 3 : 2); /* ??? */
317 put_le32(pb, s->packet_size); /* packet size */
318 put_le32(pb, s->packet_size); /* packet size */
319 put_le32(pb, bit_rate); /* Nominal data rate in bps */
320 end_header(pb, hpos);
322 /* unknown headers */
323 hpos = put_header(pb, &ff_asf_head1_guid);
324 put_guid(pb, &ff_asf_head2_guid);
327 end_header(pb, hpos);
329 /* title and other infos */
331 hpos = put_header(pb, &ff_asf_comment_header);
332 put_le16(pb, title ? 2 * (strlen(title->value ) + 1) : 0);
333 put_le16(pb, author ? 2 * (strlen(author->value ) + 1) : 0);
334 put_le16(pb, copyright ? 2 * (strlen(copyright->value) + 1) : 0);
335 put_le16(pb, comment ? 2 * (strlen(comment->value ) + 1) : 0);
337 if (title ) put_str16_nolen(pb, title->value );
338 if (author ) put_str16_nolen(pb, author->value );
339 if (copyright) put_str16_nolen(pb, copyright->value);
340 if (comment ) put_str16_nolen(pb, comment->value );
341 end_header(pb, hpos);
343 if (metadata_count) {
344 AVMetadataTag *tag = NULL;
345 hpos = put_header(pb, &ff_asf_extended_content_header);
346 put_le16(pb, metadata_count);
347 while ((tag = av_metadata_get(s->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX))) {
348 put_le16(pb, 2*(strlen(tag->key) + 1));
349 put_str16_nolen(pb, tag->key);
351 put_le16(pb, 2*(strlen(tag->value) + 1));
352 put_str16_nolen(pb, tag->value);
354 end_header(pb, hpos);
358 for(n=0;n<s->nb_streams;n++) {
360 // ASFStream *stream = &asf->streams[n];
362 enc = s->streams[n]->codec;
363 asf->streams[n].num = n + 1;
364 asf->streams[n].seq = 0;
367 switch(enc->codec_type) {
368 case CODEC_TYPE_AUDIO:
370 extra_size = 18 + wav_extra_size;
374 case CODEC_TYPE_VIDEO:
375 wav_extra_size = enc->extradata_size;
376 extra_size = 0x33 + wav_extra_size;
381 hpos = put_header(pb, &ff_asf_stream_header);
382 if (enc->codec_type == CODEC_TYPE_AUDIO) {
383 put_guid(pb, &ff_asf_audio_stream);
384 put_guid(pb, &ff_asf_audio_conceal_spread);
386 put_guid(pb, &ff_asf_video_stream);
387 put_guid(pb, &ff_asf_video_conceal_none);
389 put_le64(pb, 0); /* ??? */
390 es_pos = url_ftell(pb);
391 put_le32(pb, extra_size); /* wav header len */
392 put_le32(pb, extra_size2); /* additional data len */
393 put_le16(pb, n + 1); /* stream number */
394 put_le32(pb, 0); /* ??? */
396 if (enc->codec_type == CODEC_TYPE_AUDIO) {
397 /* WAVEFORMATEX header */
398 int wavsize = ff_put_wav_header(pb, enc);
399 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)) {
406 if (wavsize != extra_size) {
407 cur_pos = url_ftell(pb);
408 url_fseek(pb, es_pos, SEEK_SET);
409 put_le32(pb, wavsize); /* wav header len */
410 url_fseek(pb, cur_pos, SEEK_SET);
412 /* ERROR Correction */
414 if(enc->codec_id == CODEC_ID_ADPCM_G726 || !enc->block_align){
415 put_le16(pb, 0x0190);
416 put_le16(pb, 0x0190);
418 put_le16(pb, enc->block_align);
419 put_le16(pb, enc->block_align);
424 put_le32(pb, enc->width);
425 put_le32(pb, enc->height);
426 put_byte(pb, 2); /* ??? */
427 put_le16(pb, 40 + enc->extradata_size); /* size */
429 /* BITMAPINFOHEADER header */
430 ff_put_bmp_header(pb, enc, ff_codec_bmp_tags, 1);
432 end_header(pb, hpos);
437 hpos = put_header(pb, &ff_asf_codec_comment_header);
438 put_guid(pb, &ff_asf_codec_comment1_header);
439 put_le32(pb, s->nb_streams);
440 for(n=0;n<s->nb_streams;n++) {
444 enc = s->streams[n]->codec;
445 p = avcodec_find_encoder(enc->codec_id);
447 if(enc->codec_type == CODEC_TYPE_AUDIO)
449 else if(enc->codec_type == CODEC_TYPE_VIDEO)
454 if(enc->codec_id == CODEC_ID_WMAV2)
455 desc = "Windows Media Audio V8";
457 desc = p ? p->name : enc->codec_name;
458 put_le16(pb, strlen(desc) + 1); // "number of characters" = length in bytes / 2
459 put_str16_nolen(pb, desc);
460 put_le16(pb, 0); /* no parameters */
464 if (enc->codec_type == CODEC_TYPE_AUDIO) {
466 put_le16(pb, enc->codec_tag);
469 put_le32(pb, enc->codec_tag);
474 end_header(pb, hpos);
476 /* patch the header size fields */
478 cur_pos = url_ftell(pb);
479 header_size = cur_pos - header_offset;
480 if (asf->is_streamed) {
481 header_size += 8 + 30 + 50;
483 url_fseek(pb, header_offset - 10 - 30, SEEK_SET);
484 put_le16(pb, header_size);
485 url_fseek(pb, header_offset - 2 - 30, SEEK_SET);
486 put_le16(pb, header_size);
488 header_size -= 8 + 30 + 50;
490 header_size += 24 + 6;
491 url_fseek(pb, header_offset - 14, SEEK_SET);
492 put_le64(pb, header_size);
493 url_fseek(pb, cur_pos, SEEK_SET);
495 /* movie chunk, followed by packets of packet_size */
496 asf->data_offset = cur_pos;
497 put_guid(pb, &ff_asf_data_header);
498 put_le64(pb, data_chunk_size);
499 put_guid(pb, &ff_asf_my_guid);
500 put_le64(pb, asf->nb_packets); /* nb packets */
501 put_byte(pb, 1); /* ??? */
502 put_byte(pb, 1); /* ??? */
506 static int asf_write_header(AVFormatContext *s)
508 ASFContext *asf = s->priv_data;
510 s->packet_size = PACKET_SIZE;
513 asf->last_indexed_pts = 0;
514 asf->index_ptr = av_malloc( sizeof(ASFIndex) * ASF_INDEX_BLOCK );
515 asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
516 asf->nb_index_count = 0;
517 asf->maximum_packet = 0;
519 /* the data-chunk-size has to be 50, which is data_size - asf->data_offset
520 * at the moment this function is done. It is needed to use asf as
521 * streamable format. */
522 if (asf_write_header1(s, 0, 50) < 0) {
527 put_flush_packet(s->pb);
529 asf->packet_nb_payloads = 0;
530 asf->packet_timestamp_start = -1;
531 asf->packet_timestamp_end = -1;
532 init_put_byte(&asf->pb, asf->packet_buf, s->packet_size, 1,
533 NULL, NULL, NULL, NULL);
538 static int asf_write_stream_header(AVFormatContext *s)
540 ASFContext *asf = s->priv_data;
542 asf->is_streamed = 1;
544 return asf_write_header(s);
547 static int put_payload_parsing_info(
549 unsigned int sendtime,
550 unsigned int duration,
555 ASFContext *asf = s->priv_data;
556 ByteIOContext *pb = s->pb;
558 int64_t start= url_ftell(pb);
560 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
562 padsize -= PACKET_HEADER_MIN_SIZE;
563 if(asf->multi_payloads_present)
567 put_byte(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
568 for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++){
572 if (asf->multi_payloads_present)
573 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
577 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
579 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
581 put_byte(pb, iLengthTypeFlags);
583 put_byte(pb, ASF_PPI_PROPERTY_FLAGS);
585 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
586 put_le16(pb, padsize - 2);
587 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
588 put_byte(pb, padsize - 1);
590 put_le32(pb, sendtime);
591 put_le16(pb, duration);
592 if (asf->multi_payloads_present)
593 put_byte(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
595 ppi_size = url_ftell(pb) - start;
600 static void flush_packet(AVFormatContext *s)
602 ASFContext *asf = s->priv_data;
603 int packet_hdr_size, packet_filled_size;
605 assert(asf->packet_timestamp_end >= asf->packet_timestamp_start);
607 if (asf->is_streamed) {
608 put_chunk(s, 0x4424, s->packet_size, 0);
611 packet_hdr_size = put_payload_parsing_info(
613 asf->packet_timestamp_start,
614 asf->packet_timestamp_end - asf->packet_timestamp_start,
615 asf->packet_nb_payloads,
616 asf->packet_size_left
619 packet_filled_size = PACKET_SIZE - asf->packet_size_left;
620 assert(packet_hdr_size <= asf->packet_size_left);
621 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
623 put_buffer(s->pb, asf->packet_buf, s->packet_size - packet_hdr_size);
625 put_flush_packet(s->pb);
627 asf->packet_nb_payloads = 0;
628 asf->packet_timestamp_start = -1;
629 asf->packet_timestamp_end = -1;
630 init_put_byte(&asf->pb, asf->packet_buf, s->packet_size, 1,
631 NULL, NULL, NULL, NULL);
634 static void put_payload_header(
637 int presentation_time,
644 ASFContext *asf = s->priv_data;
645 ByteIOContext *pb = &asf->pb;
649 if (flags & PKT_FLAG_KEY)
650 val |= ASF_PL_FLAG_KEY_FRAME;
653 put_byte(pb, stream->seq); //Media object number
654 put_le32(pb, m_obj_offset); //Offset Into Media Object
656 // Replicated Data shall be at least 8 bytes long.
657 // The first 4 bytes of data shall contain the
658 // Size of the Media Object that the payload belongs to.
659 // The next 4 bytes of data shall contain the
660 // Presentation Time for the media object that the payload belongs to.
661 put_byte(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
663 put_le32(pb, m_obj_size); //Replicated Data - Media Object Size
664 put_le32(pb, presentation_time);//Replicated Data - Presentation Time
666 if (asf->multi_payloads_present){
667 put_le16(pb, payload_len); //payload length
671 static void put_frame(
681 ASFContext *asf = s->priv_data;
682 int m_obj_offset, payload_len, frag_len1;
685 while (m_obj_offset < m_obj_size) {
686 payload_len = m_obj_size - m_obj_offset;
687 if (asf->packet_timestamp_start == -1) {
688 asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT);
690 asf->packet_size_left = PACKET_SIZE;
691 if (asf->multi_payloads_present){
692 frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
695 frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
697 asf->packet_timestamp_start = timestamp;
701 frag_len1 = asf->packet_size_left - PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS - PACKET_HEADER_MIN_SIZE - 1;
703 if(frag_len1 < payload_len && avst->codec->codec_type == CODEC_TYPE_AUDIO){
709 if (payload_len > frag_len1)
710 payload_len = frag_len1;
711 else if (payload_len == (frag_len1 - 1))
712 payload_len = frag_len1 - 2; //additional byte need to put padding length
714 put_payload_header(s, stream, timestamp+PREROLL_TIME, m_obj_size, m_obj_offset, payload_len, flags);
715 put_buffer(&asf->pb, buf, payload_len);
717 if (asf->multi_payloads_present)
718 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
720 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
721 asf->packet_timestamp_end = timestamp;
723 asf->packet_nb_payloads++;
727 m_obj_offset += payload_len;
730 if (!asf->multi_payloads_present)
732 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1))
738 static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
740 ASFContext *asf = s->priv_data;
743 AVCodecContext *codec;
744 int64_t packet_st,pts;
746 int flags= pkt->flags;
748 codec = s->streams[pkt->stream_index]->codec;
749 stream = &asf->streams[pkt->stream_index];
751 if(codec->codec_type == CODEC_TYPE_AUDIO)
752 flags &= ~PKT_FLAG_KEY;
754 pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
755 assert(pts != AV_NOPTS_VALUE);
756 duration = pts * 10000;
757 asf->duration= FFMAX(asf->duration, duration + pkt->duration * 10000);
759 packet_st = asf->nb_packets;
760 put_frame(s, stream, s->streams[pkt->stream_index], pkt->dts, pkt->data, pkt->size, flags);
763 if ((!asf->is_streamed) && (flags & PKT_FLAG_KEY)) {
764 start_sec = (int)(duration / INT64_C(10000000));
765 if (start_sec != (int)(asf->last_indexed_pts / INT64_C(10000000))) {
766 for(i=asf->nb_index_count;i<start_sec;i++) {
767 if (i>=asf->nb_index_memory_alloc) {
768 asf->nb_index_memory_alloc += ASF_INDEX_BLOCK;
769 asf->index_ptr = (ASFIndex*)av_realloc( asf->index_ptr, sizeof(ASFIndex) * asf->nb_index_memory_alloc );
772 asf->index_ptr[i].packet_number = (uint32_t)packet_st;
773 asf->index_ptr[i].packet_count = (uint16_t)(asf->nb_packets-packet_st);
774 asf->maximum_packet = FFMAX(asf->maximum_packet, (uint16_t)(asf->nb_packets-packet_st));
776 asf->nb_index_count = start_sec;
777 asf->last_indexed_pts = duration;
784 static int asf_write_index(AVFormatContext *s, ASFIndex *index, uint16_t max, uint32_t count)
786 ByteIOContext *pb = s->pb;
789 put_guid(pb, &ff_asf_simple_index_header);
790 put_le64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2)*count);
791 put_guid(pb, &ff_asf_my_guid);
792 put_le64(pb, ASF_INDEXED_INTERVAL);
795 for(i=0; i<count; i++) {
796 put_le32(pb, index[i].packet_number);
797 put_le16(pb, index[i].packet_count);
803 static int asf_write_trailer(AVFormatContext *s)
805 ASFContext *asf = s->priv_data;
806 int64_t file_size,data_size;
808 /* flush the current packet */
809 if (asf->pb.buf_ptr > asf->pb.buffer)
813 data_size = url_ftell(s->pb);
814 if ((!asf->is_streamed) && (asf->nb_index_count != 0)) {
815 asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
817 put_flush_packet(s->pb);
819 if (asf->is_streamed || url_is_streamed(s->pb)) {
820 put_chunk(s, 0x4524, 0, 0); /* end of stream */
822 /* rewrite an updated header */
823 file_size = url_ftell(s->pb);
824 url_fseek(s->pb, 0, SEEK_SET);
825 asf_write_header1(s, file_size, data_size - asf->data_offset);
828 put_flush_packet(s->pb);
829 av_free(asf->index_ptr);
834 AVOutputFormat asf_muxer = {
836 NULL_IF_CONFIG_SMALL("ASF format"),
840 #if CONFIG_LIBMP3LAME
849 .flags = AVFMT_GLOBALHEADER,
850 .codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0},
851 .metadata_conv = ff_asf_metadata_conv,
855 #if CONFIG_ASF_STREAM_MUXER
856 AVOutputFormat asf_stream_muxer = {
858 NULL_IF_CONFIG_SMALL("ASF format"),
862 #if CONFIG_LIBMP3LAME
868 asf_write_stream_header,
871 .flags = AVFMT_GLOBALHEADER,
872 .codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0},
873 .metadata_conv = ff_asf_metadata_conv,
875 #endif //CONFIG_ASF_STREAM_MUXER