3 * Copyright (c) 2000, 2001 Fabrice Bellard
5 * This file is part of Libav.
7 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/dict.h"
23 #include "libavutil/mathematics.h"
25 #include "avio_internal.h"
34 #define ASF_INDEXED_INTERVAL 10000000
35 #define ASF_INDEX_BLOCK 600
37 #define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
38 #define ASF_PACKET_ERROR_CORRECTION_FLAGS \
39 (ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
40 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE)
42 #if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0)
43 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1
45 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0
48 #define ASF_PPI_PROPERTY_FLAGS \
49 (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \
50 ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \
51 ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \
52 ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE)
54 #define ASF_PPI_LENGTH_TYPE_FLAGS 0
56 #define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD
58 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
59 # define ASF_PPI_SEQUENCE_FIELD_SIZE 1
61 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
62 # define ASF_PPI_SEQUENCE_FIELD_SIZE 2
64 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
65 # define ASF_PPI_SEQUENCE_FIELD_SIZE 4
67 #ifndef ASF_PPI_SEQUENCE_FIELD_SIZE
68 # 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 */
157 // Replicated Data shall be at least 8 bytes long.
158 #define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08
160 #define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \
161 (1 + /* Stream Number */ \
162 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
163 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
164 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
165 ASF_PAYLOAD_REPLICATED_DATA_LENGTH)
167 #define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \
168 (1 + /* Stream Number */ \
169 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
170 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
171 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
172 ASF_PAYLOAD_REPLICATED_DATA_LENGTH + \
173 ASF_PAYLOAD_LENGTH_FIELD_SIZE)
175 #define SINGLE_PAYLOAD_DATA_LENGTH \
177 PACKET_HEADER_MIN_SIZE - \
178 PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD)
180 #define MULTI_PAYLOAD_CONSTANT \
182 PACKET_HEADER_MIN_SIZE - \
183 1 - /* Payload Flags */ \
184 2 * PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS)
186 #define DATA_HEADER_SIZE 50
188 typedef struct ASFStream {
191 /* use for reading */
196 int ds_span; /* descrambling */
202 uint16_t stream_language_index;
205 uint32_t palette[256];
208 typedef struct ASFContext {
211 ASFStream streams[128]; ///< it's max number and it's not that big
212 /* non-streamed additional info */
213 uint64_t nb_packets; ///< how many packets are there in the file, invalid if broadcasting
214 uint64_t duration; ///< in ms
216 unsigned char multi_payloads_present;
217 int packet_size_left;
218 int packet_timestamp_start;
219 int packet_timestamp_end;
220 unsigned int packet_nb_payloads;
221 uint8_t packet_buf[PACKET_SIZE];
223 /* only for reading */
224 uint64_t data_offset; ///< beginning of the first data packet
226 int64_t last_indexed_pts;
228 uint32_t nb_index_count;
229 uint32_t nb_index_memory_alloc;
230 uint16_t maximum_packet;
233 static const AVCodecTag codec_asf_bmp_tags[] = {
234 { AV_CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
235 { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
236 { AV_CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
237 { AV_CODEC_ID_NONE, 0 },
240 #define PREROLL_TIME 3100
242 static void put_guid(AVIOContext *s, const ff_asf_guid *g)
244 assert(sizeof(*g) == 16);
245 avio_write(s, *g, sizeof(*g));
248 static void put_str16(AVIOContext *s, const char *tag)
252 AVIOContext *dyn_buf;
253 if (avio_open_dyn_buf(&dyn_buf) < 0)
256 avio_put_str16le(dyn_buf, tag);
257 len = avio_close_dyn_buf(dyn_buf, &pb);
259 avio_write(s, pb, len);
263 static int64_t put_header(AVIOContext *pb, const ff_asf_guid *g)
273 /* update header size */
274 static void end_header(AVIOContext *pb, int64_t pos)
278 pos1 = avio_tell(pb);
279 avio_seek(pb, pos + 16, SEEK_SET);
280 avio_wl64(pb, pos1 - pos);
281 avio_seek(pb, pos1, SEEK_SET);
284 /* write an asf chunk (only used in streaming case) */
285 static void put_chunk(AVFormatContext *s, int type,
286 int payload_length, int flags)
288 ASFContext *asf = s->priv_data;
289 AVIOContext *pb = s->pb;
292 length = payload_length + 8;
294 avio_wl16(pb, length); // size
295 avio_wl32(pb, asf->seqno); // sequence number
296 avio_wl16(pb, flags); // unknown bytes
297 avio_wl16(pb, length); // size_confirm
301 /* convert from unix to windows time */
302 static int64_t unix_to_file_time(int ti)
306 t = ti * INT64_C(10000000);
307 t += INT64_C(116444736000000000);
311 static int32_t get_send_time(ASFContext *asf, int64_t pres_time, uint64_t *offset)
314 int32_t send_time = 0;
315 *offset = asf->data_offset + DATA_HEADER_SIZE;
316 for (i = 0; i < asf->nb_index_count; i++) {
317 if (pres_time <= asf->index_ptr[i].send_time)
319 send_time = asf->index_ptr[i].send_time;
320 *offset = asf->index_ptr[i].offset;
323 return send_time / 10000;
326 static int asf_write_markers(AVFormatContext *s)
328 ASFContext *asf = s->priv_data;
329 AVIOContext *pb = s->pb;
331 AVRational scale = {1, 10000000};
332 int64_t hpos = put_header(pb, &ff_asf_marker_header);
334 put_guid(pb, &ff_asf_reserved_4); // ASF spec mandates this reserved value
335 avio_wl32(pb, s->nb_chapters); // markers count
336 avio_wl16(pb, 0); // ASF spec mandates 0 for this
337 avio_wl16(pb, 0); // name length 0, no name given
339 for (i = 0; i < s->nb_chapters; i++) {
340 AVChapter *c = s->chapters[i];
341 AVDictionaryEntry *t = av_dict_get(c->metadata, "title", NULL, 0);
342 int64_t pres_time = av_rescale_q(c->start, c->time_base, scale);
344 int32_t send_time = get_send_time(asf, pres_time, &offset);
347 AVIOContext *dyn_buf;
349 if (avio_open_dyn_buf(&dyn_buf) < 0)
350 return AVERROR(ENOMEM);
351 avio_put_str16le(dyn_buf, t->value);
352 len = avio_close_dyn_buf(dyn_buf, &buf);
354 avio_wl64(pb, offset); // offset of the packet with send_time
355 avio_wl64(pb, pres_time + PREROLL_TIME * 10000); // presentation time
356 avio_wl16(pb, 12 + len); // entry length
357 avio_wl32(pb, send_time); // send time
358 avio_wl32(pb, 0); // flags, should be 0
359 avio_wl32(pb, len / 2); // marker desc length in WCHARS!
361 avio_write(pb, buf, len); // marker desc
365 end_header(pb, hpos);
369 /* write the header (used two times if non streamed) */
370 static int asf_write_header1(AVFormatContext *s, int64_t file_size,
371 int64_t data_chunk_size)
373 ASFContext *asf = s->priv_data;
374 AVIOContext *pb = s->pb;
375 AVDictionaryEntry *tags[5];
376 int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
379 AVCodecParameters *par;
380 int64_t header_offset, cur_pos, hpos;
382 uint64_t play_duration, send_duration;
384 ff_metadata_conv(&s->metadata, ff_asf_metadata_conv, NULL);
386 tags[0] = av_dict_get(s->metadata, "title", NULL, 0);
387 tags[1] = av_dict_get(s->metadata, "author", NULL, 0);
388 tags[2] = av_dict_get(s->metadata, "copyright", NULL, 0);
389 tags[3] = av_dict_get(s->metadata, "comment", NULL, 0);
390 tags[4] = av_dict_get(s->metadata, "rating", NULL, 0);
392 if (asf->duration > UINT64_MAX / 10000 - PREROLL_TIME) {
393 av_log(s, AV_LOG_WARNING, "Duration %"PRIu64" too large\n", asf->duration);
394 if (s->error_recognition & AV_EF_EXPLODE)
395 return AVERROR(ERANGE);
399 send_duration = asf->duration * 10000;
400 play_duration = (asf->duration + PREROLL_TIME) * 10000;
403 has_title = tags[0] || tags[1] || tags[2] || tags[3] || tags[4];
404 metadata_count = av_dict_count(s->metadata);
407 for (n = 0; n < s->nb_streams; n++) {
408 par = s->streams[n]->codecpar;
410 avpriv_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
412 bit_rate += par->bit_rate;
415 if (asf->is_streamed) {
416 put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
419 put_guid(pb, &ff_asf_header);
420 avio_wl64(pb, -1); /* header length, will be patched after */
421 avio_wl32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */
422 avio_w8(pb, 1); /* ??? */
423 avio_w8(pb, 2); /* ??? */
426 header_offset = avio_tell(pb);
427 hpos = put_header(pb, &ff_asf_file_header);
428 put_guid(pb, &ff_asf_my_guid);
429 avio_wl64(pb, file_size);
431 avio_wl64(pb, unix_to_file_time(file_time));
432 avio_wl64(pb, asf->nb_packets); /* number of packets */
433 avio_wl64(pb, play_duration); /* end time stamp (in 100ns units) */
434 avio_wl64(pb, send_duration); /* duration (in 100ns units) */
435 avio_wl64(pb, PREROLL_TIME); /* start time stamp */
436 avio_wl32(pb, (asf->is_streamed || !pb->seekable) ? 3 : 2); /* ??? */
437 avio_wl32(pb, s->packet_size); /* packet size */
438 avio_wl32(pb, s->packet_size); /* packet size */
439 avio_wl32(pb, bit_rate); /* Nominal data rate in bps */
440 end_header(pb, hpos);
442 /* unknown headers */
443 hpos = put_header(pb, &ff_asf_head1_guid);
444 put_guid(pb, &ff_asf_head2_guid);
447 end_header(pb, hpos);
449 /* title and other info */
453 AVIOContext *dyn_buf;
455 if (avio_open_dyn_buf(&dyn_buf) < 0)
456 return AVERROR(ENOMEM);
458 hpos = put_header(pb, &ff_asf_comment_header);
460 for (n = 0; n < FF_ARRAY_ELEMS(tags); n++) {
461 len = tags[n] ? avio_put_str16le(dyn_buf, tags[n]->value) : 0;
464 len = avio_close_dyn_buf(dyn_buf, &buf);
465 avio_write(pb, buf, len);
467 end_header(pb, hpos);
469 if (metadata_count) {
470 AVDictionaryEntry *tag = NULL;
471 hpos = put_header(pb, &ff_asf_extended_content_header);
472 avio_wl16(pb, metadata_count);
473 while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
474 put_str16(pb, tag->key);
476 put_str16(pb, tag->value);
478 end_header(pb, hpos);
480 /* chapters using ASF markers */
481 if (!asf->is_streamed && s->nb_chapters) {
483 if (ret = asf_write_markers(s))
487 for (n = 0; n < s->nb_streams; n++) {
489 // ASFStream *stream = &asf->streams[n];
491 par = s->streams[n]->codecpar;
492 asf->streams[n].num = n + 1;
493 asf->streams[n].seq = 0;
495 switch (par->codec_type) {
496 case AVMEDIA_TYPE_AUDIO:
498 extra_size = 18 + wav_extra_size;
502 case AVMEDIA_TYPE_VIDEO:
503 wav_extra_size = par->extradata_size;
504 extra_size = 0x33 + wav_extra_size;
509 hpos = put_header(pb, &ff_asf_stream_header);
510 if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
511 put_guid(pb, &ff_asf_audio_stream);
512 put_guid(pb, &ff_asf_audio_conceal_spread);
514 put_guid(pb, &ff_asf_video_stream);
515 put_guid(pb, &ff_asf_video_conceal_none);
517 avio_wl64(pb, 0); /* ??? */
518 es_pos = avio_tell(pb);
519 avio_wl32(pb, extra_size); /* wav header len */
520 avio_wl32(pb, extra_size2); /* additional data len */
521 avio_wl16(pb, n + 1); /* stream number */
522 avio_wl32(pb, 0); /* ??? */
524 if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
525 /* WAVEFORMATEX header */
526 int wavsize = ff_put_wav_header(s, pb, par);
530 if (wavsize != extra_size) {
531 cur_pos = avio_tell(pb);
532 avio_seek(pb, es_pos, SEEK_SET);
533 avio_wl32(pb, wavsize); /* wav header len */
534 avio_seek(pb, cur_pos, SEEK_SET);
536 /* ERROR Correction */
538 if (par->codec_id == AV_CODEC_ID_ADPCM_G726 || !par->block_align) {
539 avio_wl16(pb, 0x0190);
540 avio_wl16(pb, 0x0190);
542 avio_wl16(pb, par->block_align);
543 avio_wl16(pb, par->block_align);
548 avio_wl32(pb, par->width);
549 avio_wl32(pb, par->height);
550 avio_w8(pb, 2); /* ??? */
551 avio_wl16(pb, 40 + par->extradata_size); /* size */
553 /* BITMAPINFOHEADER header */
554 ff_put_bmp_header(pb, par, ff_codec_bmp_tags, 1);
556 end_header(pb, hpos);
561 hpos = put_header(pb, &ff_asf_codec_comment_header);
562 put_guid(pb, &ff_asf_codec_comment1_header);
563 avio_wl32(pb, s->nb_streams);
564 for (n = 0; n < s->nb_streams; n++) {
565 const AVCodecDescriptor *codec_desc;
568 par = s->streams[n]->codecpar;
569 codec_desc = avcodec_descriptor_get(par->codec_id);
571 if (par->codec_type == AVMEDIA_TYPE_AUDIO)
573 else if (par->codec_type == AVMEDIA_TYPE_VIDEO)
578 if (par->codec_id == AV_CODEC_ID_WMAV2)
579 desc = "Windows Media Audio V8";
581 desc = codec_desc ? codec_desc->name : NULL;
584 AVIOContext *dyn_buf;
588 if (avio_open_dyn_buf(&dyn_buf) < 0)
589 return AVERROR(ENOMEM);
591 avio_put_str16le(dyn_buf, desc);
592 len = avio_close_dyn_buf(dyn_buf, &buf);
593 avio_wl16(pb, len / 2); // "number of characters" = length in bytes / 2
595 avio_write(pb, buf, len);
600 avio_wl16(pb, 0); /* no parameters */
603 if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
605 avio_wl16(pb, par->codec_tag);
608 avio_wl32(pb, par->codec_tag);
613 end_header(pb, hpos);
615 /* patch the header size fields */
617 cur_pos = avio_tell(pb);
618 header_size = cur_pos - header_offset;
619 if (asf->is_streamed) {
620 header_size += 8 + 30 + DATA_HEADER_SIZE;
622 avio_seek(pb, header_offset - 10 - 30, SEEK_SET);
623 avio_wl16(pb, header_size);
624 avio_seek(pb, header_offset - 2 - 30, SEEK_SET);
625 avio_wl16(pb, header_size);
627 header_size -= 8 + 30 + DATA_HEADER_SIZE;
629 header_size += 24 + 6;
630 avio_seek(pb, header_offset - 14, SEEK_SET);
631 avio_wl64(pb, header_size);
632 avio_seek(pb, cur_pos, SEEK_SET);
634 /* movie chunk, followed by packets of packet_size */
635 asf->data_offset = cur_pos;
636 put_guid(pb, &ff_asf_data_header);
637 avio_wl64(pb, data_chunk_size);
638 put_guid(pb, &ff_asf_my_guid);
639 avio_wl64(pb, asf->nb_packets); /* nb packets */
640 avio_w8(pb, 1); /* ??? */
641 avio_w8(pb, 1); /* ??? */
645 static int asf_write_header(AVFormatContext *s)
647 ASFContext *asf = s->priv_data;
649 s->packet_size = PACKET_SIZE;
652 asf->last_indexed_pts = 0;
653 asf->index_ptr = av_malloc(sizeof(ASFIndex) * ASF_INDEX_BLOCK);
654 asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
655 asf->nb_index_count = 0;
656 asf->maximum_packet = 0;
658 /* the data-chunk-size has to be 50 (DATA_HEADER_SIZE), which is
659 * data_size - asf->data_offset at the moment this function is done.
660 * It is needed to use asf as a streamable format. */
661 if (asf_write_header1(s, 0, DATA_HEADER_SIZE) < 0) {
663 av_freep(&asf->index_ptr);
669 asf->packet_nb_payloads = 0;
670 asf->packet_timestamp_start = -1;
671 asf->packet_timestamp_end = -1;
672 ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
673 NULL, NULL, NULL, NULL);
678 static int asf_write_stream_header(AVFormatContext *s)
680 ASFContext *asf = s->priv_data;
682 asf->is_streamed = 1;
684 return asf_write_header(s);
687 static int put_payload_parsing_info(AVFormatContext *s,
688 unsigned sendtime, unsigned duration,
689 int nb_payloads, int padsize)
691 ASFContext *asf = s->priv_data;
692 AVIOContext *pb = s->pb;
694 int64_t start = avio_tell(pb);
696 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
698 padsize -= PACKET_HEADER_MIN_SIZE;
699 if (asf->multi_payloads_present)
701 assert(padsize >= 0);
703 avio_w8(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
704 for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++)
707 if (asf->multi_payloads_present)
708 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
712 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
714 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
716 avio_w8(pb, iLengthTypeFlags);
718 avio_w8(pb, ASF_PPI_PROPERTY_FLAGS);
720 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
721 avio_wl16(pb, padsize - 2);
722 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
723 avio_w8(pb, padsize - 1);
725 avio_wl32(pb, sendtime);
726 avio_wl16(pb, duration);
727 if (asf->multi_payloads_present)
728 avio_w8(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
730 ppi_size = avio_tell(pb) - start;
735 static void flush_packet(AVFormatContext *s)
737 ASFContext *asf = s->priv_data;
738 int packet_hdr_size, packet_filled_size;
740 assert(asf->packet_timestamp_end >= asf->packet_timestamp_start);
742 if (asf->is_streamed)
743 put_chunk(s, 0x4424, s->packet_size, 0);
745 packet_hdr_size = put_payload_parsing_info(s,
746 asf->packet_timestamp_start,
747 asf->packet_timestamp_end -
748 asf->packet_timestamp_start,
749 asf->packet_nb_payloads,
750 asf->packet_size_left);
752 packet_filled_size = PACKET_SIZE - asf->packet_size_left;
753 assert(packet_hdr_size <= asf->packet_size_left);
754 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
756 avio_write(s->pb, asf->packet_buf, s->packet_size - packet_hdr_size);
760 asf->packet_nb_payloads = 0;
761 asf->packet_timestamp_start = -1;
762 asf->packet_timestamp_end = -1;
763 ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
764 NULL, NULL, NULL, NULL);
767 static void put_payload_header(AVFormatContext *s, ASFStream *stream,
768 int presentation_time, int m_obj_size,
769 int m_obj_offset, int payload_len, int flags)
771 ASFContext *asf = s->priv_data;
772 AVIOContext *pb = &asf->pb;
776 if (flags & AV_PKT_FLAG_KEY)
777 val |= ASF_PL_FLAG_KEY_FRAME;
780 avio_w8(pb, stream->seq); // Media object number
781 avio_wl32(pb, m_obj_offset); // Offset Into Media Object
783 // Replicated Data shall be at least 8 bytes long.
784 // The first 4 bytes of data shall contain the
785 // Size of the Media Object that the payload belongs to.
786 // The next 4 bytes of data shall contain the
787 // Presentation Time for the media object that the payload belongs to.
788 avio_w8(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
790 avio_wl32(pb, m_obj_size); // Replicated Data - Media Object Size
791 avio_wl32(pb, presentation_time); // Replicated Data - Presentation Time
793 if (asf->multi_payloads_present) {
794 avio_wl16(pb, payload_len); // payload length
798 static void put_frame(AVFormatContext *s, ASFStream *stream, AVStream *avst,
799 int timestamp, const uint8_t *buf,
800 int m_obj_size, int flags)
802 ASFContext *asf = s->priv_data;
803 int m_obj_offset, payload_len, frag_len1;
806 while (m_obj_offset < m_obj_size) {
807 payload_len = m_obj_size - m_obj_offset;
808 if (asf->packet_timestamp_start == -1) {
809 asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT);
811 asf->packet_size_left = PACKET_SIZE;
812 if (asf->multi_payloads_present) {
813 frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
815 frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
817 asf->packet_timestamp_start = timestamp;
820 frag_len1 = asf->packet_size_left -
821 PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS -
822 PACKET_HEADER_MIN_SIZE - 1;
824 if (frag_len1 < payload_len &&
825 avst->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
831 if (payload_len > frag_len1)
832 payload_len = frag_len1;
833 else if (payload_len == (frag_len1 - 1))
834 payload_len = frag_len1 - 2; // additional byte need to put padding length
836 put_payload_header(s, stream, timestamp + PREROLL_TIME,
837 m_obj_size, m_obj_offset, payload_len, flags);
838 avio_write(&asf->pb, buf, payload_len);
840 if (asf->multi_payloads_present)
841 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
843 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
844 asf->packet_timestamp_end = timestamp;
846 asf->packet_nb_payloads++;
850 m_obj_offset += payload_len;
853 if (!asf->multi_payloads_present)
855 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1))
861 static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
863 ASFContext *asf = s->priv_data;
864 AVIOContext *pb = s->pb;
866 AVCodecParameters *par;
867 int64_t packet_st, pts;
869 int flags = pkt->flags;
870 uint64_t offset = avio_tell(pb);
872 par = s->streams[pkt->stream_index]->codecpar;
873 stream = &asf->streams[pkt->stream_index];
875 if (par->codec_type == AVMEDIA_TYPE_AUDIO)
876 flags &= ~AV_PKT_FLAG_KEY;
878 pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
879 assert(pts != AV_NOPTS_VALUE);
881 if (pts > UINT64_MAX - pkt->duration)
882 return AVERROR(ERANGE);
883 asf->duration = FFMAX(asf->duration, pts + pkt->duration);
885 packet_st = asf->nb_packets;
886 put_frame(s, stream, s->streams[pkt->stream_index],
887 pkt->dts, pkt->data, pkt->size, flags);
890 if ((!asf->is_streamed) && (flags & AV_PKT_FLAG_KEY)) {
891 if (pts / 1000LL > INT_MAX)
892 return AVERROR(ERANGE);
894 start_sec = pts / 1000;
895 if (start_sec != asf->last_indexed_pts / 1000) {
896 for (i = asf->nb_index_count; i < start_sec; i++) {
897 if (i >= asf->nb_index_memory_alloc) {
899 asf->nb_index_memory_alloc += ASF_INDEX_BLOCK;
900 if ((err = av_reallocp_array(&asf->index_ptr,
901 asf->nb_index_memory_alloc,
902 sizeof(*asf->index_ptr))) < 0) {
903 asf->nb_index_memory_alloc = 0;
908 asf->index_ptr[i].packet_number = (uint32_t)packet_st;
909 asf->index_ptr[i].packet_count = (uint16_t)(asf->nb_packets - packet_st);
910 asf->index_ptr[i].send_time = start_sec * INT64_C(10000000);
911 asf->index_ptr[i].offset = offset;
912 asf->maximum_packet = FFMAX(asf->maximum_packet,
913 (uint16_t)(asf->nb_packets - packet_st));
915 asf->nb_index_count = start_sec;
916 asf->last_indexed_pts = pts;
922 static int asf_write_index(AVFormatContext *s, ASFIndex *index,
923 uint16_t max, uint32_t count)
925 AVIOContext *pb = s->pb;
928 put_guid(pb, &ff_asf_simple_index_header);
929 avio_wl64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2) * count);
930 put_guid(pb, &ff_asf_my_guid);
931 avio_wl64(pb, ASF_INDEXED_INTERVAL);
933 avio_wl32(pb, count);
934 for (i = 0; i < count; i++) {
935 avio_wl32(pb, index[i].packet_number);
936 avio_wl16(pb, index[i].packet_count);
942 static int asf_write_trailer(AVFormatContext *s)
944 ASFContext *asf = s->priv_data;
945 int64_t file_size, data_size;
947 /* flush the current packet */
948 if (asf->pb.buf_ptr > asf->pb.buffer)
952 data_size = avio_tell(s->pb);
953 if ((!asf->is_streamed) && (asf->nb_index_count != 0))
954 asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
957 if (asf->is_streamed || !s->pb->seekable) {
958 put_chunk(s, 0x4524, 0, 0); /* end of stream */
960 /* rewrite an updated header */
961 file_size = avio_tell(s->pb);
962 avio_seek(s->pb, 0, SEEK_SET);
963 asf_write_header1(s, file_size, data_size - asf->data_offset);
966 av_free(asf->index_ptr);
971 AVOutputFormat ff_asf_muxer = {
973 .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
974 .mime_type = "video/x-ms-asf",
975 .extensions = "asf,wmv,wma",
976 .priv_data_size = sizeof(ASFContext),
977 .audio_codec = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_MP2,
978 .video_codec = AV_CODEC_ID_MSMPEG4V3,
979 .write_header = asf_write_header,
980 .write_packet = asf_write_packet,
981 .write_trailer = asf_write_trailer,
982 .flags = AVFMT_GLOBALHEADER,
983 .codec_tag = (const AVCodecTag * const []) {
984 codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0
987 #endif /* CONFIG_ASF_MUXER */
989 #if CONFIG_ASF_STREAM_MUXER
990 AVOutputFormat ff_asf_stream_muxer = {
991 .name = "asf_stream",
992 .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
993 .mime_type = "video/x-ms-asf",
994 .extensions = "asf,wmv,wma",
995 .priv_data_size = sizeof(ASFContext),
996 .audio_codec = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_MP2,
997 .video_codec = AV_CODEC_ID_MSMPEG4V3,
998 .write_header = asf_write_stream_header,
999 .write_packet = asf_write_packet,
1000 .write_trailer = asf_write_trailer,
1001 .flags = AVFMT_GLOBALHEADER,
1002 .codec_tag = (const AVCodecTag * const []) {
1003 codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0
1006 #endif /* CONFIG_ASF_STREAM_MUXER */