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
24 #include "avio_internal.h"
25 #include "libavutil/dict.h"
31 #define ASF_INDEXED_INTERVAL 10000000
32 #define ASF_INDEX_BLOCK 600
34 #define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
35 #define ASF_PACKET_ERROR_CORRECTION_FLAGS (\
36 ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
37 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE\
40 #if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0)
41 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1
43 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0
46 #define ASF_PPI_PROPERTY_FLAGS (\
47 ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \
48 ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \
49 ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \
50 ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE \
53 #define ASF_PPI_LENGTH_TYPE_FLAGS 0
55 #define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD
57 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
58 # define ASF_PPI_SEQUENCE_FIELD_SIZE 1
60 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
61 # define ASF_PPI_SEQUENCE_FIELD_SIZE 2
63 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
64 # define ASF_PPI_SEQUENCE_FIELD_SIZE 4
66 #ifndef ASF_PPI_SEQUENCE_FIELD_SIZE
67 # define ASF_PPI_SEQUENCE_FIELD_SIZE 0
71 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
72 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 1
74 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
75 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 2
77 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
78 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 4
80 #ifndef ASF_PPI_PACKET_LENGTH_FIELD_SIZE
81 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 0
84 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
85 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 1
87 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
88 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 2
90 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
91 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 4
93 #ifndef ASF_PPI_PADDING_LENGTH_FIELD_SIZE
94 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 0
97 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
98 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 1
100 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
101 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 2
103 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
104 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 4
106 #ifndef ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE
107 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 0
110 #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))
111 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 1
113 #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))
114 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 2
116 #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))
117 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 4
119 #ifndef ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE
120 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 0
123 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
124 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 1
126 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
127 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 2
129 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
130 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 4
132 #ifndef ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE
133 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 0
136 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
137 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 1
139 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
140 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 2
142 #ifndef ASF_PAYLOAD_LENGTH_FIELD_SIZE
143 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 0
146 #define PACKET_HEADER_MIN_SIZE (\
147 ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE + \
148 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE + \
149 1 + /*Length Type Flags*/ \
150 1 + /*Property Flags*/ \
151 ASF_PPI_PACKET_LENGTH_FIELD_SIZE + \
152 ASF_PPI_SEQUENCE_FIELD_SIZE + \
153 ASF_PPI_PADDING_LENGTH_FIELD_SIZE + \
154 4 + /*Send Time Field*/ \
155 2 /*Duration Field*/ \
159 // Replicated Data shall be at least 8 bytes long.
160 #define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08
162 #define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD (\
163 1 + /*Stream Number*/ \
164 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
165 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
166 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
167 ASF_PAYLOAD_REPLICATED_DATA_LENGTH \
170 #define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS (\
171 1 + /*Stream Number*/ \
172 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
173 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
174 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
175 ASF_PAYLOAD_REPLICATED_DATA_LENGTH + \
176 ASF_PAYLOAD_LENGTH_FIELD_SIZE \
179 #define SINGLE_PAYLOAD_DATA_LENGTH (\
181 PACKET_HEADER_MIN_SIZE - \
182 PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \
185 #define MULTI_PAYLOAD_CONSTANT (\
187 PACKET_HEADER_MIN_SIZE - \
188 1 - /*Payload Flags*/ \
189 2*PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \
195 ASFStream streams[128]; ///< it's max number and it's not that big
196 /* non streamed additonnal info */
197 uint64_t nb_packets; ///< how many packets are there in the file, invalid if broadcasting
198 int64_t duration; ///< in 100ns units
200 unsigned char multi_payloads_present;
201 int packet_size_left;
202 int64_t packet_timestamp_start;
203 int64_t packet_timestamp_end;
204 unsigned int packet_nb_payloads;
205 uint8_t packet_buf[PACKET_SIZE];
207 /* only for reading */
208 uint64_t data_offset; ///< beginning of the first data packet
210 int64_t last_indexed_pts;
212 uint32_t nb_index_count;
213 uint32_t nb_index_memory_alloc;
214 uint16_t maximum_packet;
217 static const AVCodecTag codec_asf_bmp_tags[] = {
218 { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
219 { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
220 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
221 { CODEC_ID_NONE, 0 },
224 #define PREROLL_TIME 3100
226 void ff_put_guid(AVIOContext *s, const ff_asf_guid *g)
228 assert(sizeof(*g) == 16);
229 avio_write(s, *g, sizeof(*g));
232 static void put_str16(AVIOContext *s, const char *tag)
236 AVIOContext *dyn_buf;
237 if (avio_open_dyn_buf(&dyn_buf) < 0)
240 avio_put_str16le(dyn_buf, tag);
241 len = avio_close_dyn_buf(dyn_buf, &pb);
243 avio_write(s, pb, len);
247 static int64_t put_header(AVIOContext *pb, const ff_asf_guid *g)
257 /* update header size */
258 static void end_header(AVIOContext *pb, int64_t pos)
262 pos1 = avio_tell(pb);
263 avio_seek(pb, pos + 16, SEEK_SET);
264 avio_wl64(pb, pos1 - pos);
265 avio_seek(pb, pos1, SEEK_SET);
268 /* write an asf chunk (only used in streaming case) */
269 static void put_chunk(AVFormatContext *s, int type, int payload_length, int flags)
271 ASFContext *asf = s->priv_data;
272 AVIOContext *pb = s->pb;
275 length = payload_length + 8;
277 avio_wl16(pb, length); //size
278 avio_wl32(pb, asf->seqno);//sequence number
279 avio_wl16(pb, flags); /* unknown bytes */
280 avio_wl16(pb, length); //size_confirm
284 /* convert from unix to windows time */
285 static int64_t unix_to_file_time(int ti)
289 t = ti * INT64_C(10000000);
290 t += INT64_C(116444736000000000);
294 /* write the header (used two times if non streamed) */
295 static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size)
297 ASFContext *asf = s->priv_data;
298 AVIOContext *pb = s->pb;
299 AVDictionaryEntry *tags[5];
300 int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
304 int64_t header_offset, cur_pos, hpos;
308 ff_metadata_conv(&s->metadata, ff_asf_metadata_conv, NULL);
310 tags[0] = av_dict_get(s->metadata, "title" , NULL, 0);
311 tags[1] = av_dict_get(s->metadata, "author" , NULL, 0);
312 tags[2] = av_dict_get(s->metadata, "copyright", NULL, 0);
313 tags[3] = av_dict_get(s->metadata, "comment" , NULL, 0);
314 tags[4] = av_dict_get(s->metadata, "rating" , NULL, 0);
316 duration = asf->duration + PREROLL_TIME * 10000;
317 has_title = tags[0] || tags[1] || tags[2] || tags[3] || tags[4];
318 metadata_count = s->metadata ? s->metadata->count : 0;
321 for(n=0;n<s->nb_streams;n++) {
322 enc = s->streams[n]->codec;
324 av_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
326 bit_rate += enc->bit_rate;
329 if (asf->is_streamed) {
330 put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
333 ff_put_guid(pb, &ff_asf_header);
334 avio_wl64(pb, -1); /* header length, will be patched after */
335 avio_wl32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */
336 avio_w8(pb, 1); /* ??? */
337 avio_w8(pb, 2); /* ??? */
340 header_offset = avio_tell(pb);
341 hpos = put_header(pb, &ff_asf_file_header);
342 ff_put_guid(pb, &ff_asf_my_guid);
343 avio_wl64(pb, file_size);
345 avio_wl64(pb, unix_to_file_time(file_time));
346 avio_wl64(pb, asf->nb_packets); /* number of packets */
347 avio_wl64(pb, duration); /* end time stamp (in 100ns units) */
348 avio_wl64(pb, asf->duration); /* duration (in 100ns units) */
349 avio_wl64(pb, PREROLL_TIME); /* start time stamp */
350 avio_wl32(pb, (asf->is_streamed || !pb->seekable ) ? 3 : 2); /* ??? */
351 avio_wl32(pb, s->packet_size); /* packet size */
352 avio_wl32(pb, s->packet_size); /* packet size */
353 avio_wl32(pb, bit_rate); /* Nominal data rate in bps */
354 end_header(pb, hpos);
356 /* unknown headers */
357 hpos = put_header(pb, &ff_asf_head1_guid);
358 ff_put_guid(pb, &ff_asf_head2_guid);
361 end_header(pb, hpos);
363 /* title and other infos */
367 AVIOContext *dyn_buf;
369 if (avio_open_dyn_buf(&dyn_buf) < 0)
370 return AVERROR(ENOMEM);
372 hpos = put_header(pb, &ff_asf_comment_header);
374 for (n = 0; n < FF_ARRAY_ELEMS(tags); n++) {
375 len = tags[n] ? avio_put_str16le(dyn_buf, tags[n]->value) : 0;
378 len = avio_close_dyn_buf(dyn_buf, &buf);
379 avio_write(pb, buf, len);
381 end_header(pb, hpos);
383 if (metadata_count) {
384 AVDictionaryEntry *tag = NULL;
385 hpos = put_header(pb, &ff_asf_extended_content_header);
386 avio_wl16(pb, metadata_count);
387 while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
388 put_str16(pb, tag->key);
390 put_str16(pb, tag->value);
392 end_header(pb, hpos);
396 for(n=0;n<s->nb_streams;n++) {
398 // ASFStream *stream = &asf->streams[n];
400 enc = s->streams[n]->codec;
401 asf->streams[n].num = n + 1;
402 asf->streams[n].seq = 0;
405 switch(enc->codec_type) {
406 case AVMEDIA_TYPE_AUDIO:
408 extra_size = 18 + wav_extra_size;
412 case AVMEDIA_TYPE_VIDEO:
413 wav_extra_size = enc->extradata_size;
414 extra_size = 0x33 + wav_extra_size;
419 hpos = put_header(pb, &ff_asf_stream_header);
420 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
421 ff_put_guid(pb, &ff_asf_audio_stream);
422 ff_put_guid(pb, &ff_asf_audio_conceal_spread);
424 ff_put_guid(pb, &ff_asf_video_stream);
425 ff_put_guid(pb, &ff_asf_video_conceal_none);
427 avio_wl64(pb, 0); /* ??? */
428 es_pos = avio_tell(pb);
429 avio_wl32(pb, extra_size); /* wav header len */
430 avio_wl32(pb, extra_size2); /* additional data len */
431 avio_wl16(pb, n + 1); /* stream number */
432 avio_wl32(pb, 0); /* ??? */
434 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
435 /* WAVEFORMATEX header */
436 int wavsize = ff_put_wav_header(pb, enc);
440 if (wavsize != extra_size) {
441 cur_pos = avio_tell(pb);
442 avio_seek(pb, es_pos, SEEK_SET);
443 avio_wl32(pb, wavsize); /* wav header len */
444 avio_seek(pb, cur_pos, SEEK_SET);
446 /* ERROR Correction */
448 if(enc->codec_id == CODEC_ID_ADPCM_G726 || !enc->block_align){
449 avio_wl16(pb, 0x0190);
450 avio_wl16(pb, 0x0190);
452 avio_wl16(pb, enc->block_align);
453 avio_wl16(pb, enc->block_align);
458 avio_wl32(pb, enc->width);
459 avio_wl32(pb, enc->height);
460 avio_w8(pb, 2); /* ??? */
461 avio_wl16(pb, 40 + enc->extradata_size); /* size */
463 /* BITMAPINFOHEADER header */
464 ff_put_bmp_header(pb, enc, ff_codec_bmp_tags, 1);
466 end_header(pb, hpos);
471 hpos = put_header(pb, &ff_asf_codec_comment_header);
472 ff_put_guid(pb, &ff_asf_codec_comment1_header);
473 avio_wl32(pb, s->nb_streams);
474 for(n=0;n<s->nb_streams;n++) {
479 AVIOContext *dyn_buf;
481 enc = s->streams[n]->codec;
482 p = avcodec_find_encoder(enc->codec_id);
484 if(enc->codec_type == AVMEDIA_TYPE_AUDIO)
486 else if(enc->codec_type == AVMEDIA_TYPE_VIDEO)
491 if(enc->codec_id == CODEC_ID_WMAV2)
492 desc = "Windows Media Audio V8";
494 desc = p ? p->name : enc->codec_name;
496 if ( avio_open_dyn_buf(&dyn_buf) < 0)
497 return AVERROR(ENOMEM);
499 avio_put_str16le(dyn_buf, desc);
500 len = avio_close_dyn_buf(dyn_buf, &buf);
501 avio_wl16(pb, len / 2); // "number of characters" = length in bytes / 2
503 avio_write(pb, buf, len);
506 avio_wl16(pb, 0); /* no parameters */
510 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
512 avio_wl16(pb, enc->codec_tag);
515 avio_wl32(pb, enc->codec_tag);
520 end_header(pb, hpos);
522 /* patch the header size fields */
524 cur_pos = avio_tell(pb);
525 header_size = cur_pos - header_offset;
526 if (asf->is_streamed) {
527 header_size += 8 + 30 + 50;
529 avio_seek(pb, header_offset - 10 - 30, SEEK_SET);
530 avio_wl16(pb, header_size);
531 avio_seek(pb, header_offset - 2 - 30, SEEK_SET);
532 avio_wl16(pb, header_size);
534 header_size -= 8 + 30 + 50;
536 header_size += 24 + 6;
537 avio_seek(pb, header_offset - 14, SEEK_SET);
538 avio_wl64(pb, header_size);
539 avio_seek(pb, cur_pos, SEEK_SET);
541 /* movie chunk, followed by packets of packet_size */
542 asf->data_offset = cur_pos;
543 ff_put_guid(pb, &ff_asf_data_header);
544 avio_wl64(pb, data_chunk_size);
545 ff_put_guid(pb, &ff_asf_my_guid);
546 avio_wl64(pb, asf->nb_packets); /* nb packets */
547 avio_w8(pb, 1); /* ??? */
548 avio_w8(pb, 1); /* ??? */
552 static int asf_write_header(AVFormatContext *s)
554 ASFContext *asf = s->priv_data;
556 s->packet_size = PACKET_SIZE;
559 asf->last_indexed_pts = 0;
560 asf->index_ptr = av_malloc( sizeof(ASFIndex) * ASF_INDEX_BLOCK );
561 asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
562 asf->nb_index_count = 0;
563 asf->maximum_packet = 0;
565 /* the data-chunk-size has to be 50, which is data_size - asf->data_offset
566 * at the moment this function is done. It is needed to use asf as
567 * streamable format. */
568 if (asf_write_header1(s, 0, 50) < 0) {
575 asf->packet_nb_payloads = 0;
576 asf->packet_timestamp_start = -1;
577 asf->packet_timestamp_end = -1;
578 ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
579 NULL, NULL, NULL, NULL);
584 static int asf_write_stream_header(AVFormatContext *s)
586 ASFContext *asf = s->priv_data;
588 asf->is_streamed = 1;
590 return asf_write_header(s);
593 static int put_payload_parsing_info(
595 unsigned int sendtime,
596 unsigned int duration,
601 ASFContext *asf = s->priv_data;
602 AVIOContext *pb = s->pb;
604 int64_t start= avio_tell(pb);
606 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
608 padsize -= PACKET_HEADER_MIN_SIZE;
609 if(asf->multi_payloads_present)
613 avio_w8(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
614 for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++){
618 if (asf->multi_payloads_present)
619 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
623 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
625 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
627 avio_w8(pb, iLengthTypeFlags);
629 avio_w8(pb, ASF_PPI_PROPERTY_FLAGS);
631 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
632 avio_wl16(pb, padsize - 2);
633 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
634 avio_w8(pb, padsize - 1);
636 avio_wl32(pb, sendtime);
637 avio_wl16(pb, duration);
638 if (asf->multi_payloads_present)
639 avio_w8(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
641 ppi_size = avio_tell(pb) - start;
646 static void flush_packet(AVFormatContext *s)
648 ASFContext *asf = s->priv_data;
649 int packet_hdr_size, packet_filled_size;
651 assert(asf->packet_timestamp_end >= asf->packet_timestamp_start);
653 if (asf->is_streamed) {
654 put_chunk(s, 0x4424, s->packet_size, 0);
657 packet_hdr_size = put_payload_parsing_info(
659 asf->packet_timestamp_start,
660 asf->packet_timestamp_end - asf->packet_timestamp_start,
661 asf->packet_nb_payloads,
662 asf->packet_size_left
665 packet_filled_size = PACKET_SIZE - asf->packet_size_left;
666 assert(packet_hdr_size <= asf->packet_size_left);
667 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
669 avio_write(s->pb, asf->packet_buf, s->packet_size - packet_hdr_size);
673 asf->packet_nb_payloads = 0;
674 asf->packet_timestamp_start = -1;
675 asf->packet_timestamp_end = -1;
676 ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
677 NULL, NULL, NULL, NULL);
680 static void put_payload_header(
683 int64_t presentation_time,
690 ASFContext *asf = s->priv_data;
691 AVIOContext *pb = &asf->pb;
695 if (flags & AV_PKT_FLAG_KEY)
696 val |= ASF_PL_FLAG_KEY_FRAME;
699 avio_w8(pb, stream->seq); //Media object number
700 avio_wl32(pb, m_obj_offset); //Offset Into Media Object
702 // Replicated Data shall be at least 8 bytes long.
703 // The first 4 bytes of data shall contain the
704 // Size of the Media Object that the payload belongs to.
705 // The next 4 bytes of data shall contain the
706 // Presentation Time for the media object that the payload belongs to.
707 avio_w8(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
709 avio_wl32(pb, m_obj_size); //Replicated Data - Media Object Size
710 avio_wl32(pb, (uint32_t) presentation_time);//Replicated Data - Presentation Time
712 if (asf->multi_payloads_present){
713 avio_wl16(pb, payload_len); //payload length
717 static void put_frame(
727 ASFContext *asf = s->priv_data;
728 int m_obj_offset, payload_len, frag_len1;
731 while (m_obj_offset < m_obj_size) {
732 payload_len = m_obj_size - m_obj_offset;
733 if (asf->packet_timestamp_start == -1) {
734 asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT);
736 asf->packet_size_left = PACKET_SIZE;
737 if (asf->multi_payloads_present){
738 frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
741 frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
743 asf->packet_timestamp_start = timestamp;
747 frag_len1 = asf->packet_size_left - PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS - PACKET_HEADER_MIN_SIZE - 1;
749 if(frag_len1 < payload_len && avst->codec->codec_type == AVMEDIA_TYPE_AUDIO){
755 if (payload_len > frag_len1)
756 payload_len = frag_len1;
757 else if (payload_len == (frag_len1 - 1))
758 payload_len = frag_len1 - 2; //additional byte need to put padding length
760 put_payload_header(s, stream, timestamp+PREROLL_TIME, m_obj_size, m_obj_offset, payload_len, flags);
761 avio_write(&asf->pb, buf, payload_len);
763 if (asf->multi_payloads_present)
764 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
766 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
767 asf->packet_timestamp_end = timestamp;
769 asf->packet_nb_payloads++;
773 m_obj_offset += payload_len;
776 if (!asf->multi_payloads_present)
778 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1))
784 static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
786 ASFContext *asf = s->priv_data;
789 AVCodecContext *codec;
790 int64_t packet_st,pts;
792 int flags= pkt->flags;
794 codec = s->streams[pkt->stream_index]->codec;
795 stream = &asf->streams[pkt->stream_index];
797 if(codec->codec_type == AVMEDIA_TYPE_AUDIO)
798 flags &= ~AV_PKT_FLAG_KEY;
800 pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
801 assert(pts != AV_NOPTS_VALUE);
802 duration = pts * 10000;
803 asf->duration= FFMAX(asf->duration, duration + pkt->duration * 10000);
805 packet_st = asf->nb_packets;
806 put_frame(s, stream, s->streams[pkt->stream_index], pkt->dts, pkt->data, pkt->size, flags);
809 if ((!asf->is_streamed) && (flags & AV_PKT_FLAG_KEY)) {
810 start_sec = (int)(duration / INT64_C(10000000));
811 if (start_sec != (int)(asf->last_indexed_pts / INT64_C(10000000))) {
812 for(i=asf->nb_index_count;i<start_sec;i++) {
813 if (i>=asf->nb_index_memory_alloc) {
814 asf->nb_index_memory_alloc += ASF_INDEX_BLOCK;
815 asf->index_ptr = (ASFIndex*)av_realloc( asf->index_ptr, sizeof(ASFIndex) * asf->nb_index_memory_alloc );
818 asf->index_ptr[i].packet_number = (uint32_t)packet_st;
819 asf->index_ptr[i].packet_count = (uint16_t)(asf->nb_packets-packet_st);
820 asf->maximum_packet = FFMAX(asf->maximum_packet, (uint16_t)(asf->nb_packets-packet_st));
822 asf->nb_index_count = start_sec;
823 asf->last_indexed_pts = duration;
830 static int asf_write_index(AVFormatContext *s, ASFIndex *index, uint16_t max, uint32_t count)
832 AVIOContext *pb = s->pb;
835 ff_put_guid(pb, &ff_asf_simple_index_header);
836 avio_wl64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2)*count);
837 ff_put_guid(pb, &ff_asf_my_guid);
838 avio_wl64(pb, ASF_INDEXED_INTERVAL);
840 avio_wl32(pb, count);
841 for(i=0; i<count; i++) {
842 avio_wl32(pb, index[i].packet_number);
843 avio_wl16(pb, index[i].packet_count);
849 static int asf_write_trailer(AVFormatContext *s)
851 ASFContext *asf = s->priv_data;
852 int64_t file_size,data_size;
854 /* flush the current packet */
855 if (asf->pb.buf_ptr > asf->pb.buffer)
859 data_size = avio_tell(s->pb);
860 if ((!asf->is_streamed) && (asf->nb_index_count != 0)) {
861 asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
865 if (asf->is_streamed || !s->pb->seekable) {
866 put_chunk(s, 0x4524, 0, 0); /* end of stream */
868 /* rewrite an updated header */
869 file_size = avio_tell(s->pb);
870 avio_seek(s->pb, 0, SEEK_SET);
871 asf_write_header1(s, file_size, data_size - asf->data_offset);
875 av_free(asf->index_ptr);
880 AVOutputFormat ff_asf_muxer = {
882 .long_name = NULL_IF_CONFIG_SMALL("ASF format"),
883 .mime_type = "video/x-ms-asf",
884 .extensions = "asf,wmv,wma",
885 .priv_data_size = sizeof(ASFContext),
886 .audio_codec = CODEC_ID_WMAV2,
887 .video_codec = CODEC_ID_MSMPEG4V3,
888 .write_header = asf_write_header,
889 .write_packet = asf_write_packet,
890 .write_trailer = asf_write_trailer,
891 .flags = AVFMT_GLOBALHEADER,
892 .codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0},
896 #if CONFIG_ASF_STREAM_MUXER
897 AVOutputFormat ff_asf_stream_muxer = {
898 .name = "asf_stream",
899 .long_name = NULL_IF_CONFIG_SMALL("ASF format"),
900 .mime_type = "video/x-ms-asf",
901 .extensions = "asf,wmv,wma",
902 .priv_data_size = sizeof(ASFContext),
903 .audio_codec = CODEC_ID_WMAV2,
904 .video_codec = CODEC_ID_MSMPEG4V3,
905 .write_header = asf_write_stream_header,
906 .write_packet = asf_write_packet,
907 .write_trailer = asf_write_trailer,
908 .flags = AVFMT_GLOBALHEADER,
909 .codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0},
911 #endif //CONFIG_ASF_STREAM_MUXER