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
22 #include "libavutil/avassert.h"
23 #include "libavutil/dict.h"
24 #include "libavutil/mathematics.h"
25 #include "libavutil/parseutils.h"
26 #include "libavutil/opt.h"
28 #include "avlanguage.h"
29 #include "avio_internal.h"
34 #define ASF_INDEXED_INTERVAL 10000000
35 #define ASF_INDEX_BLOCK (1<<9)
36 #define ASF_PAYLOADS_PER_PACKET 63
38 #define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
39 #define ASF_PACKET_ERROR_CORRECTION_FLAGS \
40 (ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
41 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE)
43 #if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0)
44 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1
46 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0
49 #define ASF_PPI_PROPERTY_FLAGS \
50 (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \
51 ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \
52 ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \
53 ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE)
55 #define ASF_PPI_LENGTH_TYPE_FLAGS 0
57 #define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD
59 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
60 # define ASF_PPI_SEQUENCE_FIELD_SIZE 1
62 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
63 # define ASF_PPI_SEQUENCE_FIELD_SIZE 2
65 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
66 # define ASF_PPI_SEQUENCE_FIELD_SIZE 4
68 #ifndef ASF_PPI_SEQUENCE_FIELD_SIZE
69 # define ASF_PPI_SEQUENCE_FIELD_SIZE 0
72 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
73 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 1
75 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
76 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 2
78 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
79 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 4
81 #ifndef ASF_PPI_PACKET_LENGTH_FIELD_SIZE
82 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 0
85 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
86 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 1
88 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
89 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 2
91 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
92 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 4
94 #ifndef ASF_PPI_PADDING_LENGTH_FIELD_SIZE
95 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 0
98 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
99 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 1
101 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
102 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 2
104 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
105 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 4
107 #ifndef ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE
108 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 0
111 #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))
112 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 1
114 #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))
115 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 2
117 #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))
118 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 4
120 #ifndef ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE
121 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 0
124 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
125 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 1
127 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
128 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 2
130 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
131 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 4
133 #ifndef ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE
134 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 0
137 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
138 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 1
140 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
141 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 2
143 #ifndef ASF_PAYLOAD_LENGTH_FIELD_SIZE
144 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 0
147 #define PACKET_HEADER_MIN_SIZE \
148 (ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE + \
149 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE + \
150 1 + /* Length Type Flags */ \
151 1 + /* Property Flags */ \
152 ASF_PPI_PACKET_LENGTH_FIELD_SIZE + \
153 ASF_PPI_SEQUENCE_FIELD_SIZE + \
154 ASF_PPI_PADDING_LENGTH_FIELD_SIZE + \
155 4 + /* Send Time Field */ \
156 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)
168 #define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \
169 (1 + /* Stream Number */ \
170 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
171 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
172 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
173 ASF_PAYLOAD_REPLICATED_DATA_LENGTH + \
174 ASF_PAYLOAD_LENGTH_FIELD_SIZE)
176 #define SINGLE_PAYLOAD_HEADERS \
177 (PACKET_HEADER_MIN_SIZE + \
178 PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD)
180 #define MULTI_PAYLOAD_HEADERS \
181 (PACKET_HEADER_MIN_SIZE + \
182 1 + /* Payload Flags */ \
183 2 * PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS)
185 #define DATA_HEADER_SIZE 50
187 #define PACKET_SIZE_MAX 65536
188 #define PACKET_SIZE_MIN 100
190 typedef struct ASFPayload {
195 typedef struct ASFStream {
198 /* use for reading */
207 int ds_span; /* descrambling */
213 uint16_t stream_language_index;
216 uint32_t palette[256];
219 ASFPayload payload[8];
222 typedef struct ASFContext {
226 ASFStream streams[128]; ///< it's max number and it's not that big
227 const char *languages[128];
229 int64_t creation_time;
230 /* non streamed additonnal info */
231 uint64_t nb_packets; ///< how many packets are there in the file, invalid if broadcasting
232 int64_t duration; ///< in 100ns units
234 unsigned char multi_payloads_present;
235 int packet_size_left;
236 int64_t packet_timestamp_start;
237 int64_t packet_timestamp_end;
238 unsigned int packet_nb_payloads;
239 uint8_t packet_buf[PACKET_SIZE_MAX];
241 /* only for reading */
242 uint64_t data_offset; ///< beginning of the first data packet
245 uint32_t nb_index_memory_alloc;
246 uint16_t maximum_packet;
247 uint32_t next_packet_number;
248 uint16_t next_packet_count;
249 uint64_t next_packet_offset;
255 static const AVCodecTag codec_asf_bmp_tags[] = {
256 { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
257 { AV_CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
258 { AV_CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
259 { AV_CODEC_ID_NONE, 0 },
262 #define PREROLL_TIME 3100
264 static void put_str16(AVIOContext *s, const char *tag)
268 AVIOContext *dyn_buf;
269 if (avio_open_dyn_buf(&dyn_buf) < 0)
272 avio_put_str16le(dyn_buf, tag);
273 len = avio_close_dyn_buf(dyn_buf, &pb);
275 avio_write(s, pb, len);
279 static int64_t put_header(AVIOContext *pb, const ff_asf_guid *g)
289 /* update header size */
290 static void end_header(AVIOContext *pb, int64_t pos)
294 pos1 = avio_tell(pb);
295 avio_seek(pb, pos + 16, SEEK_SET);
296 avio_wl64(pb, pos1 - pos);
297 avio_seek(pb, pos1, SEEK_SET);
300 /* write an asf chunk (only used in streaming case) */
301 static void put_chunk(AVFormatContext *s, int type,
302 int payload_length, int flags)
304 ASFContext *asf = s->priv_data;
305 AVIOContext *pb = s->pb;
308 length = payload_length + 8;
310 avio_wl16(pb, length); // size
311 avio_wl32(pb, asf->seqno); // sequence number
312 avio_wl16(pb, flags); // unknown bytes
313 avio_wl16(pb, length); // size_confirm
317 /* convert from av time to windows time */
318 static int64_t unix_to_file_time(int64_t ti)
322 t = ti * INT64_C(10);
323 t += INT64_C(116444736000000000);
327 static int32_t get_send_time(ASFContext *asf, int64_t pres_time, uint64_t *offset)
330 int32_t send_time = 0;
331 *offset = asf->data_offset + DATA_HEADER_SIZE;
332 for (i = 0; i < asf->next_start_sec; i++) {
333 if (pres_time <= asf->index_ptr[i].send_time)
335 send_time = asf->index_ptr[i].send_time;
336 *offset = asf->index_ptr[i].offset;
339 return send_time / 10000;
342 static int asf_write_markers(AVFormatContext *s)
344 ASFContext *asf = s->priv_data;
345 AVIOContext *pb = s->pb;
347 AVRational scale = {1, 10000000};
348 int64_t hpos = put_header(pb, &ff_asf_marker_header);
350 ff_put_guid(pb, &ff_asf_reserved_4);// ASF spec mandates this reserved value
351 avio_wl32(pb, s->nb_chapters); // markers count
352 avio_wl16(pb, 0); // ASF spec mandates 0 for this
353 avio_wl16(pb, 0); // name length 0, no name given
355 for (i = 0; i < s->nb_chapters; i++) {
356 AVChapter *c = s->chapters[i];
357 AVDictionaryEntry *t = av_dict_get(c->metadata, "title", NULL, 0);
358 int64_t pres_time = av_rescale_q(c->start, c->time_base, scale);
360 int32_t send_time = get_send_time(asf, pres_time, &offset);
363 AVIOContext *dyn_buf;
365 if (avio_open_dyn_buf(&dyn_buf) < 0)
366 return AVERROR(ENOMEM);
367 avio_put_str16le(dyn_buf, t->value);
368 len = avio_close_dyn_buf(dyn_buf, &buf);
370 avio_wl64(pb, offset); // offset of the packet with send_time
371 avio_wl64(pb, pres_time + PREROLL_TIME * 10000); // presentation time
372 avio_wl16(pb, 12 + len); // entry length
373 avio_wl32(pb, send_time); // send time
374 avio_wl32(pb, 0); // flags, should be 0
375 avio_wl32(pb, len / 2); // marker desc length in WCHARS!
377 avio_write(pb, buf, len); // marker desc
381 end_header(pb, hpos);
385 /* write the header (used two times if non streamed) */
386 static int asf_write_header1(AVFormatContext *s, int64_t file_size,
387 int64_t data_chunk_size)
389 ASFContext *asf = s->priv_data;
390 AVIOContext *pb = s->pb;
391 AVDictionaryEntry *tags[5];
392 int header_size, n, extra_size, extra_size2, wav_extra_size;
393 int has_title, has_aspect_ratio = 0;
396 int64_t header_offset, cur_pos, hpos;
400 ff_metadata_conv(&s->metadata, ff_asf_metadata_conv, NULL);
402 tags[0] = av_dict_get(s->metadata, "title", NULL, 0);
403 tags[1] = av_dict_get(s->metadata, "author", NULL, 0);
404 tags[2] = av_dict_get(s->metadata, "copyright", NULL, 0);
405 tags[3] = av_dict_get(s->metadata, "comment", NULL, 0);
406 tags[4] = av_dict_get(s->metadata, "rating", NULL, 0);
408 duration = asf->duration + PREROLL_TIME * 10000;
409 has_title = tags[0] || tags[1] || tags[2] || tags[3] || tags[4];
412 if (ff_parse_creation_time_metadata(s, &asf->creation_time, 0) != 0)
413 av_dict_set(&s->metadata, "creation_time", NULL, 0);
416 metadata_count = av_dict_count(s->metadata);
419 for (n = 0; n < s->nb_streams; n++) {
420 AVDictionaryEntry *entry;
421 enc = s->streams[n]->codec;
423 avpriv_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
425 bit_rate += enc->bit_rate;
426 if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
427 && enc->sample_aspect_ratio.num > 0
428 && enc->sample_aspect_ratio.den > 0)
431 entry = av_dict_get(s->streams[n]->metadata, "language", NULL, 0);
433 const char *iso6391lang = av_convert_lang_to(entry->value, AV_LANG_ISO639_1);
436 for (i = 0; i < asf->nb_languages; i++) {
437 if (!strcmp(asf->languages[i], iso6391lang)) {
438 asf->streams[n].stream_language_index = i;
442 if (i >= asf->nb_languages) {
443 asf->languages[asf->nb_languages] = iso6391lang;
444 asf->streams[n].stream_language_index = asf->nb_languages;
449 asf->streams[n].stream_language_index = 128;
453 if (asf->is_streamed) {
454 put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
457 ff_put_guid(pb, &ff_asf_header);
458 avio_wl64(pb, -1); /* header length, will be patched after */
459 avio_wl32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */
460 avio_w8(pb, 1); /* ??? */
461 avio_w8(pb, 2); /* ??? */
464 header_offset = avio_tell(pb);
465 hpos = put_header(pb, &ff_asf_file_header);
466 ff_put_guid(pb, &ff_asf_my_guid);
467 avio_wl64(pb, file_size);
468 avio_wl64(pb, unix_to_file_time(asf->creation_time));
469 avio_wl64(pb, asf->nb_packets); /* number of packets */
470 avio_wl64(pb, duration); /* end time stamp (in 100ns units) */
471 avio_wl64(pb, asf->duration); /* duration (in 100ns units) */
472 avio_wl64(pb, PREROLL_TIME); /* start time stamp */
473 avio_wl32(pb, (asf->is_streamed || !pb->seekable) ? 3 : 2); /* ??? */
474 avio_wl32(pb, s->packet_size); /* packet size */
475 avio_wl32(pb, s->packet_size); /* packet size */
476 avio_wl32(pb, bit_rate ? bit_rate : -1); /* Maximum data rate in bps */
477 end_header(pb, hpos);
479 /* header_extension */
480 hpos = put_header(pb, &ff_asf_head1_guid);
481 ff_put_guid(pb, &ff_asf_head2_guid);
483 avio_wl32(pb, 0); /* length, to be filled later */
484 if (asf->nb_languages) {
488 hpos2 = put_header(pb, &ff_asf_language_guid);
489 avio_wl16(pb, asf->nb_languages);
490 for (i = 0; i < asf->nb_languages; i++) {
492 avio_put_str16le(pb, asf->languages[i]);
494 end_header(pb, hpos2);
496 for (n = 0; n < s->nb_streams; n++) {
498 if (asf->streams[n].stream_language_index > 127)
500 es_pos = put_header(pb, &ff_asf_extended_stream_properties_object);
501 avio_wl64(pb, 0); /* start time */
502 avio_wl64(pb, 0); /* end time */
503 avio_wl32(pb, s->streams[n]->codec->bit_rate); /* data bitrate bps */
504 avio_wl32(pb, 5000); /* buffer size ms */
505 avio_wl32(pb, 0); /* initial buffer fullness */
506 avio_wl32(pb, s->streams[n]->codec->bit_rate); /* peak data bitrate */
507 avio_wl32(pb, 5000); /* maximum buffer size ms */
508 avio_wl32(pb, 0); /* max initial buffer fullness */
509 avio_wl32(pb, 0); /* max object size */
510 avio_wl32(pb, (!asf->is_streamed && pb->seekable) << 1); /* flags - seekable */
511 avio_wl16(pb, n + 1); /* stream number */
512 avio_wl16(pb, asf->streams[n].stream_language_index); /* language id index */
513 avio_wl64(pb, 0); /* avg time per frame */
514 avio_wl16(pb, 0); /* stream name count */
515 avio_wl16(pb, 0); /* payload extension system count */
516 end_header(pb, es_pos);
519 if (has_aspect_ratio) {
521 hpos2 = put_header(pb, &ff_asf_metadata_header);
522 avio_wl16(pb, 2 * has_aspect_ratio);
523 for (n = 0; n < s->nb_streams; n++) {
524 enc = s->streams[n]->codec;
525 if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
526 && enc->sample_aspect_ratio.num > 0
527 && enc->sample_aspect_ratio.den > 0) {
528 AVRational sar = enc->sample_aspect_ratio;
530 // the stream number is set like this below
531 avio_wl16(pb, n + 1);
532 avio_wl16(pb, 26); // name_len
533 avio_wl16(pb, 3); // value_type
534 avio_wl32(pb, 4); // value_len
535 avio_put_str16le(pb, "AspectRatioX");
536 avio_wl32(pb, sar.num);
538 // the stream number is set like this below
539 avio_wl16(pb, n + 1);
540 avio_wl16(pb, 26); // name_len
541 avio_wl16(pb, 3); // value_type
542 avio_wl32(pb, 4); // value_len
543 avio_put_str16le(pb, "AspectRatioY");
544 avio_wl32(pb, sar.den);
547 end_header(pb, hpos2);
551 pos1 = avio_tell(pb);
552 avio_seek(pb, hpos + 42, SEEK_SET);
553 avio_wl32(pb, pos1 - hpos - 46);
554 avio_seek(pb, pos1, SEEK_SET);
556 end_header(pb, hpos);
558 /* title and other infos */
562 AVIOContext *dyn_buf;
564 if (avio_open_dyn_buf(&dyn_buf) < 0)
565 return AVERROR(ENOMEM);
567 hpos = put_header(pb, &ff_asf_comment_header);
569 for (n = 0; n < FF_ARRAY_ELEMS(tags); n++) {
570 len = tags[n] ? avio_put_str16le(dyn_buf, tags[n]->value) : 0;
573 len = avio_close_dyn_buf(dyn_buf, &buf);
574 avio_write(pb, buf, len);
576 end_header(pb, hpos);
578 if (metadata_count) {
579 AVDictionaryEntry *tag = NULL;
580 hpos = put_header(pb, &ff_asf_extended_content_header);
581 avio_wl16(pb, metadata_count);
582 while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
583 put_str16(pb, tag->key);
585 put_str16(pb, tag->value);
587 end_header(pb, hpos);
589 /* chapters using ASF markers */
590 if (!asf->is_streamed && s->nb_chapters) {
592 if ((ret = asf_write_markers(s)) < 0)
596 for (n = 0; n < s->nb_streams; n++) {
598 // ASFStream *stream = &asf->streams[n];
600 enc = s->streams[n]->codec;
601 asf->streams[n].num = n + 1;
602 asf->streams[n].seq = 1;
604 switch (enc->codec_type) {
605 case AVMEDIA_TYPE_AUDIO:
607 extra_size = 18 + wav_extra_size;
611 case AVMEDIA_TYPE_VIDEO:
612 wav_extra_size = enc->extradata_size;
613 extra_size = 0x33 + wav_extra_size;
618 hpos = put_header(pb, &ff_asf_stream_header);
619 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
620 ff_put_guid(pb, &ff_asf_audio_stream);
621 ff_put_guid(pb, &ff_asf_audio_conceal_spread);
623 ff_put_guid(pb, &ff_asf_video_stream);
624 ff_put_guid(pb, &ff_asf_video_conceal_none);
626 avio_wl64(pb, 0); /* ??? */
627 es_pos = avio_tell(pb);
628 avio_wl32(pb, extra_size); /* wav header len */
629 avio_wl32(pb, extra_size2); /* additional data len */
630 avio_wl16(pb, n + 1); /* stream number */
631 avio_wl32(pb, 0); /* ??? */
633 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
634 /* WAVEFORMATEX header */
635 int wavsize = ff_put_wav_header(pb, enc, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX);
639 if (wavsize != extra_size) {
640 cur_pos = avio_tell(pb);
641 avio_seek(pb, es_pos, SEEK_SET);
642 avio_wl32(pb, wavsize); /* wav header len */
643 avio_seek(pb, cur_pos, SEEK_SET);
645 /* ERROR Correction */
647 if (enc->codec_id == AV_CODEC_ID_ADPCM_G726 || !enc->block_align) {
648 avio_wl16(pb, 0x0190);
649 avio_wl16(pb, 0x0190);
651 avio_wl16(pb, enc->block_align);
652 avio_wl16(pb, enc->block_align);
657 avio_wl32(pb, enc->width);
658 avio_wl32(pb, enc->height);
659 avio_w8(pb, 2); /* ??? */
660 avio_wl16(pb, 40 + enc->extradata_size); /* size */
662 /* BITMAPINFOHEADER header */
663 ff_put_bmp_header(pb, enc, ff_codec_bmp_tags, 1, 0);
665 end_header(pb, hpos);
670 hpos = put_header(pb, &ff_asf_codec_comment_header);
671 ff_put_guid(pb, &ff_asf_codec_comment1_header);
672 avio_wl32(pb, s->nb_streams);
673 for (n = 0; n < s->nb_streams; n++) {
674 const AVCodecDescriptor *codec_desc;
677 enc = s->streams[n]->codec;
678 codec_desc = avcodec_descriptor_get(enc->codec_id);
680 if (enc->codec_type == AVMEDIA_TYPE_AUDIO)
682 else if (enc->codec_type == AVMEDIA_TYPE_VIDEO)
687 if (enc->codec_id == AV_CODEC_ID_WMAV2)
688 desc = "Windows Media Audio V8";
690 desc = codec_desc ? codec_desc->name : NULL;
693 AVIOContext *dyn_buf;
697 if (avio_open_dyn_buf(&dyn_buf) < 0)
698 return AVERROR(ENOMEM);
700 avio_put_str16le(dyn_buf, desc);
701 len = avio_close_dyn_buf(dyn_buf, &buf);
702 avio_wl16(pb, len / 2); // "number of characters" = length in bytes / 2
704 avio_write(pb, buf, len);
709 avio_wl16(pb, 0); /* no parameters */
712 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
714 avio_wl16(pb, enc->codec_tag);
717 avio_wl32(pb, enc->codec_tag);
722 end_header(pb, hpos);
724 /* patch the header size fields */
726 cur_pos = avio_tell(pb);
727 header_size = cur_pos - header_offset;
728 if (asf->is_streamed) {
729 header_size += 8 + 30 + DATA_HEADER_SIZE;
731 avio_seek(pb, header_offset - 10 - 30, SEEK_SET);
732 avio_wl16(pb, header_size);
733 avio_seek(pb, header_offset - 2 - 30, SEEK_SET);
734 avio_wl16(pb, header_size);
736 header_size -= 8 + 30 + DATA_HEADER_SIZE;
738 header_size += 24 + 6;
739 avio_seek(pb, header_offset - 14, SEEK_SET);
740 avio_wl64(pb, header_size);
741 avio_seek(pb, cur_pos, SEEK_SET);
743 /* movie chunk, followed by packets of packet_size */
744 asf->data_offset = cur_pos;
745 ff_put_guid(pb, &ff_asf_data_header);
746 avio_wl64(pb, data_chunk_size);
747 ff_put_guid(pb, &ff_asf_my_guid);
748 avio_wl64(pb, asf->nb_packets); /* nb packets */
749 avio_w8(pb, 1); /* ??? */
750 avio_w8(pb, 1); /* ??? */
754 static int asf_write_header(AVFormatContext *s)
756 ASFContext *asf = s->priv_data;
758 s->packet_size = asf->packet_size;
759 s->max_interleave_delta = 0;
762 if (s->nb_streams > 127) {
763 av_log(s, AV_LOG_ERROR, "ASF can only handle 127 streams\n");
764 return AVERROR(EINVAL);
767 asf->index_ptr = av_malloc(sizeof(ASFIndex) * ASF_INDEX_BLOCK);
769 return AVERROR(ENOMEM);
770 asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
771 asf->maximum_packet = 0;
773 /* the data-chunk-size has to be 50 (DATA_HEADER_SIZE), which is
774 * data_size - asf->data_offset at the moment this function is done.
775 * It is needed to use asf as a streamable format. */
776 if (asf_write_header1(s, 0, DATA_HEADER_SIZE) < 0) {
778 av_freep(&asf->index_ptr);
784 asf->packet_nb_payloads = 0;
785 asf->packet_timestamp_start = -1;
786 asf->packet_timestamp_end = -1;
787 ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
788 NULL, NULL, NULL, NULL);
790 if (s->avoid_negative_ts < 0)
791 s->avoid_negative_ts = 1;
796 static int asf_write_stream_header(AVFormatContext *s)
798 ASFContext *asf = s->priv_data;
800 asf->is_streamed = 1;
802 return asf_write_header(s);
805 static int put_payload_parsing_info(AVFormatContext *s,
806 unsigned sendtime, unsigned duration,
807 int nb_payloads, int padsize)
809 ASFContext *asf = s->priv_data;
810 AVIOContext *pb = s->pb;
812 int64_t start = avio_tell(pb);
814 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
816 padsize -= PACKET_HEADER_MIN_SIZE;
817 if (asf->multi_payloads_present)
819 av_assert0(padsize >= 0);
821 avio_w8(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
822 for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++)
825 if (asf->multi_payloads_present)
826 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
830 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
832 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
834 avio_w8(pb, iLengthTypeFlags);
836 avio_w8(pb, ASF_PPI_PROPERTY_FLAGS);
838 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
839 avio_wl16(pb, padsize - 2);
840 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
841 avio_w8(pb, padsize - 1);
843 avio_wl32(pb, sendtime);
844 avio_wl16(pb, duration);
845 if (asf->multi_payloads_present)
846 avio_w8(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
848 ppi_size = avio_tell(pb) - start;
853 static void flush_packet(AVFormatContext *s)
855 ASFContext *asf = s->priv_data;
856 int packet_hdr_size, packet_filled_size;
858 av_assert0(asf->packet_timestamp_end >= asf->packet_timestamp_start);
860 if (asf->is_streamed)
861 put_chunk(s, 0x4424, s->packet_size, 0);
863 packet_hdr_size = put_payload_parsing_info(s,
864 asf->packet_timestamp_start,
865 asf->packet_timestamp_end - asf->packet_timestamp_start,
866 asf->packet_nb_payloads,
867 asf->packet_size_left);
869 packet_filled_size = asf->packet_size - asf->packet_size_left;
870 av_assert0(packet_hdr_size <= asf->packet_size_left);
871 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
873 avio_write(s->pb, asf->packet_buf, s->packet_size - packet_hdr_size);
877 asf->packet_nb_payloads = 0;
878 asf->packet_timestamp_start = -1;
879 asf->packet_timestamp_end = -1;
880 ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
881 NULL, NULL, NULL, NULL);
884 static void put_payload_header(AVFormatContext *s, ASFStream *stream,
885 int64_t presentation_time, int m_obj_size,
886 int m_obj_offset, int payload_len, int flags)
888 ASFContext *asf = s->priv_data;
889 AVIOContext *pb = &asf->pb;
893 if (flags & AV_PKT_FLAG_KEY)
894 val |= ASF_PL_FLAG_KEY_FRAME;
897 avio_w8(pb, stream->seq); // Media object number
898 avio_wl32(pb, m_obj_offset); // Offset Into Media Object
900 // Replicated Data shall be at least 8 bytes long.
901 // The first 4 bytes of data shall contain the
902 // Size of the Media Object that the payload belongs to.
903 // The next 4 bytes of data shall contain the
904 // Presentation Time for the media object that the payload belongs to.
905 avio_w8(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
907 avio_wl32(pb, m_obj_size); // Replicated Data - Media Object Size
908 avio_wl32(pb, (uint32_t) presentation_time); // Replicated Data - Presentation Time
910 if (asf->multi_payloads_present) {
911 avio_wl16(pb, payload_len); // payload length
915 static void put_frame(AVFormatContext *s, ASFStream *stream, AVStream *avst,
916 int64_t timestamp, const uint8_t *buf,
917 int m_obj_size, int flags)
919 ASFContext *asf = s->priv_data;
920 int m_obj_offset, payload_len, frag_len1;
923 while (m_obj_offset < m_obj_size) {
924 payload_len = m_obj_size - m_obj_offset;
925 if (asf->packet_timestamp_start == -1) {
926 const int multi_payload_constant = (asf->packet_size - MULTI_PAYLOAD_HEADERS);
927 asf->multi_payloads_present = (payload_len < multi_payload_constant);
929 asf->packet_size_left = asf->packet_size;
930 if (asf->multi_payloads_present) {
931 frag_len1 = multi_payload_constant - 1;
933 frag_len1 = asf->packet_size - SINGLE_PAYLOAD_HEADERS;
935 asf->packet_timestamp_start = timestamp;
938 frag_len1 = asf->packet_size_left -
939 PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS -
940 PACKET_HEADER_MIN_SIZE - 1;
942 if (frag_len1 < payload_len &&
943 avst->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
947 if (asf->packet_timestamp_start > INT64_MAX - UINT16_MAX ||
948 timestamp > asf->packet_timestamp_start + UINT16_MAX) {
954 if (payload_len > frag_len1)
955 payload_len = frag_len1;
956 else if (payload_len == (frag_len1 - 1))
957 payload_len = frag_len1 - 2; // additional byte need to put padding length
959 put_payload_header(s, stream, timestamp + PREROLL_TIME,
960 m_obj_size, m_obj_offset, payload_len, flags);
961 avio_write(&asf->pb, buf, payload_len);
963 if (asf->multi_payloads_present)
964 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
966 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
967 asf->packet_timestamp_end = timestamp;
969 asf->packet_nb_payloads++;
973 m_obj_offset += payload_len;
976 if (!asf->multi_payloads_present)
978 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1))
980 else if (asf->packet_nb_payloads == ASF_PAYLOADS_PER_PACKET)
986 static int update_index(AVFormatContext *s, int start_sec,
987 uint32_t packet_number, uint16_t packet_count,
988 uint64_t packet_offset)
990 ASFContext *asf = s->priv_data;
992 if (start_sec > asf->next_start_sec) {
995 if (!asf->next_start_sec) {
996 asf->next_packet_number = packet_number;
997 asf->next_packet_count = packet_count;
998 asf->next_packet_offset = packet_offset;
1001 if (start_sec > asf->nb_index_memory_alloc) {
1003 asf->nb_index_memory_alloc = (start_sec + ASF_INDEX_BLOCK) & ~(ASF_INDEX_BLOCK - 1);
1004 if ((err = av_reallocp_array(&asf->index_ptr,
1005 asf->nb_index_memory_alloc,
1006 sizeof(*asf->index_ptr))) < 0) {
1007 asf->nb_index_memory_alloc = 0;
1011 for (i = asf->next_start_sec; i < start_sec; i++) {
1012 asf->index_ptr[i].packet_number = asf->next_packet_number;
1013 asf->index_ptr[i].packet_count = asf->next_packet_count;
1014 asf->index_ptr[i].send_time = asf->next_start_sec * INT64_C(10000000);
1015 asf->index_ptr[i].offset = asf->next_packet_offset;
1019 asf->maximum_packet = FFMAX(asf->maximum_packet, packet_count);
1020 asf->next_packet_number = packet_number;
1021 asf->next_packet_count = packet_count;
1022 asf->next_packet_offset = packet_offset;
1023 asf->next_start_sec = start_sec;
1028 static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
1030 ASFContext *asf = s->priv_data;
1031 AVIOContext *pb = s->pb;
1033 AVCodecContext *codec;
1034 uint32_t packet_number;
1037 int flags = pkt->flags;
1039 uint64_t offset = avio_tell(pb);
1041 codec = s->streams[pkt->stream_index]->codec;
1042 stream = &asf->streams[pkt->stream_index];
1044 if (codec->codec_type == AVMEDIA_TYPE_AUDIO)
1045 flags &= ~AV_PKT_FLAG_KEY;
1047 pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
1048 av_assert0(pts != AV_NOPTS_VALUE);
1049 if ( pts < - PREROLL_TIME
1050 || pts > (INT_MAX-3)/10000LL * ASF_INDEXED_INTERVAL - PREROLL_TIME) {
1051 av_log(s, AV_LOG_ERROR, "input pts %"PRId64" is invalid\n", pts);
1052 return AVERROR(EINVAL);
1055 asf->duration = FFMAX(asf->duration, pts + pkt->duration * 10000);
1057 packet_number = asf->nb_packets;
1058 put_frame(s, stream, s->streams[pkt->stream_index],
1059 pkt->dts, pkt->data, pkt->size, flags);
1061 start_sec = (int)((PREROLL_TIME * 10000 + pts + ASF_INDEXED_INTERVAL - 1)
1062 / ASF_INDEXED_INTERVAL);
1065 if ((!asf->is_streamed) && (flags & AV_PKT_FLAG_KEY)) {
1066 uint16_t packet_count = asf->nb_packets - packet_number;
1067 ret = update_index(s, start_sec, packet_number, packet_count, offset);
1071 asf->end_sec = start_sec;
1076 static int asf_write_index(AVFormatContext *s, const ASFIndex *index,
1077 uint16_t max, uint32_t count)
1079 AVIOContext *pb = s->pb;
1082 ff_put_guid(pb, &ff_asf_simple_index_header);
1083 avio_wl64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2) * count);
1084 ff_put_guid(pb, &ff_asf_my_guid);
1085 avio_wl64(pb, ASF_INDEXED_INTERVAL);
1087 avio_wl32(pb, count);
1088 for (i = 0; i < count; i++) {
1089 avio_wl32(pb, index[i].packet_number);
1090 avio_wl16(pb, index[i].packet_count);
1096 static int asf_write_trailer(AVFormatContext *s)
1098 ASFContext *asf = s->priv_data;
1099 int64_t file_size, data_size;
1102 /* flush the current packet */
1103 if (asf->pb.buf_ptr > asf->pb.buffer)
1107 data_size = avio_tell(s->pb);
1108 if (!asf->is_streamed && asf->next_start_sec) {
1109 if ((ret = update_index(s, asf->end_sec + 1, 0, 0, 0)) < 0)
1111 asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->next_start_sec);
1115 if (asf->is_streamed || !s->pb->seekable) {
1116 put_chunk(s, 0x4524, 0, 0); /* end of stream */
1118 /* rewrite an updated header */
1119 file_size = avio_tell(s->pb);
1120 avio_seek(s->pb, 0, SEEK_SET);
1121 asf_write_header1(s, file_size, data_size - asf->data_offset);
1124 av_freep(&asf->index_ptr);
1128 static const AVOption asf_options[] = {
1129 { "packet_size", "Packet size", offsetof(ASFContext, packet_size), AV_OPT_TYPE_INT, {.i64 = 3200}, PACKET_SIZE_MIN, PACKET_SIZE_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1133 #if CONFIG_ASF_MUXER
1134 static const AVClass asf_muxer_class = {
1135 .class_name = "ASF muxer",
1136 .item_name = av_default_item_name,
1137 .option = asf_options,
1138 .version = LIBAVUTIL_VERSION_INT,
1141 AVOutputFormat ff_asf_muxer = {
1143 .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
1144 .mime_type = "video/x-ms-asf",
1145 .extensions = "asf,wmv,wma",
1146 .priv_data_size = sizeof(ASFContext),
1147 .audio_codec = AV_CODEC_ID_WMAV2,
1148 .video_codec = AV_CODEC_ID_MSMPEG4V3,
1149 .write_header = asf_write_header,
1150 .write_packet = asf_write_packet,
1151 .write_trailer = asf_write_trailer,
1152 .flags = AVFMT_GLOBALHEADER,
1153 .codec_tag = (const AVCodecTag * const []) {
1154 codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0
1156 .priv_class = &asf_muxer_class,
1158 #endif /* CONFIG_ASF_MUXER */
1160 #if CONFIG_ASF_STREAM_MUXER
1161 static const AVClass asf_stream_muxer_class = {
1162 .class_name = "ASF stream muxer",
1163 .item_name = av_default_item_name,
1164 .option = asf_options,
1165 .version = LIBAVUTIL_VERSION_INT,
1168 AVOutputFormat ff_asf_stream_muxer = {
1169 .name = "asf_stream",
1170 .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
1171 .mime_type = "video/x-ms-asf",
1172 .extensions = "asf,wmv,wma",
1173 .priv_data_size = sizeof(ASFContext),
1174 .audio_codec = AV_CODEC_ID_WMAV2,
1175 .video_codec = AV_CODEC_ID_MSMPEG4V3,
1176 .write_header = asf_write_stream_header,
1177 .write_packet = asf_write_packet,
1178 .write_trailer = asf_write_trailer,
1179 .flags = AVFMT_GLOBALHEADER,
1180 .codec_tag = (const AVCodecTag * const []) {
1181 codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0
1183 .priv_class = &asf_stream_muxer_class,
1185 #endif /* CONFIG_ASF_STREAM_MUXER */