34 #include "libavutil/avstring.h"
35 #include "libavutil/dict.h"
36 #include "libavutil/intfloat.h"
37 #include "libavutil/intreadwrite.h"
38 #include "libavutil/lfg.h"
39 #include "libavutil/mathematics.h"
40 #include "libavutil/opt.h"
41 #include "libavutil/random_seed.h"
42 #include "libavutil/samplefmt.h"
43 #include "libavutil/sha.h"
87 #define MODE_MATROSKAv2 0x01
88 #define MODE_WEBM 0x02
121 #define MAX_SEEKENTRY_SIZE 21
125 #define MAX_CUETRACKPOS_SIZE 42
128 #define MAX_CUEPOINT_SIZE(num_tracks) 12 + MAX_CUETRACKPOS_SIZE*num_tracks
131 #define OPUS_SEEK_PREROLL 80000000
164 while ((num+1) >> bytes*7) bytes++;
183 bytes = needed_bytes;
188 num |= 1ULL << bytes*7;
189 for (i = bytes - 1; i >= 0; i--)
197 while (tmp>>=8) bytes++;
201 for (i = bytes - 1; i >= 0; i--)
286 if (new_seekhead == NULL)
291 if (numelements > 0) {
366 currentpos = seekhead->
filepos;
419 uint64_t pts = entry->
pts;
426 for (j = 0; j < num_tracks; j++)
427 tracks[j].has_cue = 0;
428 for (j = 0; j < cues->
num_entries - i && entry[j].
pts == pts; j++) {
429 int tracknum = entry[j].
tracknum - 1;
430 av_assert0(tracknum>=0 && tracknum<num_tracks);
431 if (tracks[tracknum].has_cue)
454 int first_header_size;
458 first_header_size = 30;
460 first_header_size = 42;
463 first_header_size, header_start, header_len) < 0) {
469 for (j = 0; j < 2; j++) {
472 for (j = 0; j < 3; j++)
473 avio_write(pb, header_start[j], header_len[j]);
505 int ret, codecpriv_size;
523 "Invalid extradata found, ALAC expects a 36-byte "
576 int i, j,
ret, default_stream_exists = 0;
579 if (ret < 0)
return ret;
594 int output_sample_rate = 0;
620 }
else if (tag && tag->
value) {
635 codec_id =
"D_WEBVTT/CAPTIONS";
638 codec_id =
"D_WEBVTT/DESCRIPTIONS";
641 codec_id =
"D_WEBVTT/METADATA";
644 codec_id =
"D_WEBVTT/SUBTITLES";
675 "Only VP8,VP9 video and Vorbis,Opus(experimental, use -strict -2) audio and WebVTT subtitles are supported for WebM.\n");
679 switch (codec->codec_type) {
682 if(st->avg_frame_rate.num && st->avg_frame_rate.den && 1.0/
av_q2d(st->avg_frame_rate) >
av_q2d(codec->time_base))
697 else if (!native_id) {
720 || st_mode >= MATROSKA_VIDEO_STEREO_MODE_COUNT) {
722 "The specified stereo mode is not valid.\n");
734 if (st->sample_aspect_ratio.num) {
735 int64_t d_width =
av_rescale(codec->width, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
736 if (d_width > INT_MAX) {
745 uint32_t color_space =
av_le2ne32(codec->codec_tag);
761 if (output_sample_rate)
780 av_log(s,
AV_LOG_ERROR,
"Only audio, video, and subtitles are supported for Matroska.\n");
786 if (ret < 0)
return ret;
810 if (ret < 0)
return ret;
851 if ((p = strrchr(p,
'-')) &&
859 else if (*p >=
'a' && *p <=
'z')
884 if (ret < 0)
return ret;
924 if (ret < 0)
return ret;
934 if (ret < 0)
return ret;
944 if (ret < 0)
return ret;
966 if (ret < 0)
return ret;
974 const char *mimetype = NULL;
1001 "it cannot be deduced from the codec id.\n", i);
1053 "The Matroska muxer does not yet support muxing %s\n",
1085 if (ret < 0)
return ret;
1092 uint32_t segment_uid[4];
1097 for (i = 0; i < 4; i++)
1104 const char *ident =
"Lavf";
1113 AV_WB64(date_utc_buf, date_utc);
1124 if (ret < 0)
return ret;
1131 if (ret < 0)
return ret;
1134 if (ret < 0)
return ret;
1137 if (ret < 0)
return ret;
1144 if (mkv->
cues == NULL)
1177 int size = pkt_size + 4;
1188 int sh, sm, ss, sc, eh, em, es, ec;
1191 if (sscanf(p,
"%*[^,],%d:%d:%d%*c%d,%d:%d:%d%*c%d",
1192 &sh, &sm, &ss, &sc, &eh, &em, &es, &ec) != 8)
1194 start = 3600000LL*sh + 60000LL*sm + 1000LL*ss + 10LL*sc;
1195 end = 3600000LL*eh + 60000LL*em + 1000LL*es + 10LL*ec;
1203 int i, layer = 0, max_duration = 0,
size, line_size, data_size = pkt->
size;
1210 max_duration =
FFMAX(duration, max_duration);
1211 end = memchr(data,
'\n', data_size);
1212 size = line_size = end ? end-data+1 : data_size;
1213 size -= end ? (end[-1]==
'\r')+1 : 0;
1215 for (i=0; i<3; i++, start++)
1216 if (!(start = memchr(start,
',',
size-(start-data))))
1217 return max_duration;
1219 sscanf(data,
"Dialogue: %d,", &layer);
1220 i =
snprintf(buffer,
sizeof(buffer),
"%"PRId64
",%d,",
1223 memcpy(buffer+i, start,
size-i);
1226 "pts %" PRId64
", duration %d\n",
1239 data_size -= line_size;
1242 return max_duration;
1284 memcpy(dst + offset, src, header.
blocksize);
1304 uint8_t *data = NULL, *side_data = NULL;
1307 uint64_t additional_id = 0, discard_padding = 0;
1308 ebml_master block_group, block_additions, block_more;
1311 "pts %" PRId64
", dts %" PRId64
", duration %d, flags %d\n",
1336 if (side_data && side_data_size >= 10) {
1346 additional_id =
AV_RB64(side_data);
1348 side_data_size -= 8;
1351 if ((side_data_size && additional_id == 1) || discard_padding) {
1362 if (data != pkt->
data)
1365 if (discard_padding) {
1369 if (side_data_size && additional_id == 1) {
1379 if ((side_data_size && additional_id == 1) || discard_padding) {
1386 int i, duration = 0;
1389 int s_hour, s_min, s_sec, s_hsec, e_hour, e_min, e_sec, e_hsec;
1390 if (sscanf(*buf,
"%d:%2d:%2d%*1[,.]%3d --> %d:%2d:%2d%*1[,.]%3d",
1391 &s_hour, &s_min, &s_sec, &s_hsec,
1392 &e_hour, &e_min, &e_sec, &e_hsec) == 8) {
1393 s_min += 60*s_hour; e_min += 60*e_hour;
1394 s_sec += 60*s_min; e_sec += 60*e_min;
1395 s_hsec += 1000*s_sec; e_hsec += 1000*e_sec;
1396 duration = e_hsec - s_hsec;
1423 int id_size, settings_size,
size;
1426 const int flags = 0;
1436 size = id_size + 1 + settings_size + 1 + pkt->
size;
1439 "pts %" PRId64
", dts %" PRId64
", duration %d, flags %d\n",
1449 avio_printf(pb,
"%.*s\n%.*s\n%.*s", id_size,
id, settings_size, settings, pkt->
size, pkt->
data);
1481 int64_t relative_packet_pos;
1511 duration = mkv_write_ass_blocks(s, pb, pkt);
1531 if (ret < 0)
return ret;
1544 int64_t cluster_time;
1567 cluster_size > 4 * 1024))) {
1569 " bytes, pts %" PRIu64
"dts %" PRIu64
"\n",
1632 int64_t currentpos, cuespos;
1654 if (ret < 0)
return ret;
1670 cues_end - cuespos);
1674 if (cues_end < cuespos + mkv->reserve_cues_space)
1683 if (ret < 0)
return ret;
1746 #define OFFSET(x) offsetof(MatroskaMuxContext, x)
1747 #define FLAGS AV_OPT_FLAG_ENCODING_PARAM
1749 {
"reserve_index_space",
"Reserve a given amount of space (in bytes) at the beginning of the file for the index (cues).",
OFFSET(reserve_cues_space),
AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX,
FLAGS },
1750 {
"cluster_size_limit",
"Store at most the provided amount of bytes in a cluster. ",
OFFSET(cluster_size_limit),
AV_OPT_TYPE_INT , { .i64 = -1 }, -1, INT_MAX,
FLAGS },
1751 {
"cluster_time_limit",
"Store at most the provided number of milliseconds in a cluster.",
OFFSET(cluster_time_limit),
AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX,
FLAGS },
1755 #if CONFIG_MATROSKA_MUXER
1756 static const AVClass matroska_class = {
1766 .mime_type =
"video/x-matroska",
1767 .extensions =
"mkv",
1788 .priv_class = &matroska_class,
1792 #if CONFIG_WEBM_MUXER
1793 static const AVClass webm_class = {
1803 .mime_type =
"video/webm",
1804 .extensions =
"webm",
1814 .priv_class = &webm_class,
1818 #if CONFIG_MATROSKA_AUDIO_MUXER
1819 static const AVClass mka_class = {
1828 .mime_type =
"audio/x-matroska",
1829 .extensions =
"mka",
1842 .priv_class = &mka_class,
unsigned int nb_chapters
Number of chapters in AVChapter array.
#define MATROSKA_ID_SEEKPREROLL
void av_sha_final(struct AVSHA *context, uint8_t *digest)
Finish hashing and output digest value.
static int mkv_write_vtt_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
const char const char void * val
#define MATROSKA_ID_BLOCKADDID
#define MATROSKA_ID_TRACKDEFAULTDURATION
static void put_ebml_size_unknown(AVIOContext *pb, int bytes)
Write an EBML size meaning "unknown size".
static int mkv_check_tag(AVDictionary *m)
#define AVERROR_PATCHWELCOME
#define MATROSKA_ID_DATEUTC
void av_free_packet(AVPacket *pkt)
Free a packet.
int sizebytes
how many bytes were reserved for the size
The optional first identifier line of a WebVTT cue.
void av_sha_update(struct AVSHA *context, const uint8_t *data, unsigned int len)
Update hash value.
#define MATROSKA_ID_TRACKFLAGLACING
#define MATROSKA_ID_TRACKENTRY
#define MATROSKA_ID_VIDEODISPLAYHEIGHT
int64_t cluster_pos
file offset of the cluster containing the block
static void mkv_write_simpletag(AVIOContext *pb, AVDictionaryEntry *t)
#define MATROSKA_ID_CUETRACKPOSITION
#define MATROSKA_ID_CODECPRIVATE
int av_sha_init(struct AVSHA *context, int bits)
Initialize SHA-1 or SHA-2 hashing.
#define AV_LOG_WARNING
Something somehow does not look correct.
#define LIBAVUTIL_VERSION_INT
char * av_strdup(const char *s) av_malloc_attrib
Duplicate the string s.
#define MATROSKA_ID_AUDIOBITDEPTH
#define MATROSKA_ID_TRACKFLAGDEFAULT
AVDictionaryEntry * av_dict_get(AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
static int mkv_write_attachments(AVFormatContext *s)
AVCodecContext * codec
Codec context associated with this stream.
#define MATROSKA_ID_FILEDATA
#define EBML_ID_DOCTYPEREADVERSION
static int mkv_write_header(AVFormatContext *s)
#define MATROSKA_ID_TRACKTYPE
enum AVMediaType codec_type
#define MATROSKA_ID_TAGTARGETS_CHAPTERUID
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
int64_t duration
duration of the block according to time base
#define MATROSKA_ID_MUXINGAPP
int64_t cluster_time_limit
#define MATROSKA_ID_AUDIOCHANNELS
#define MATROSKA_ID_CUECLUSTERPOSITION
int av_dup_packet(AVPacket *pkt)
#define MATROSKA_ID_EDITIONFLAGDEFAULT
#define MATROSKA_ID_CLUSTERTIMECODE
#define MATROSKA_ID_CHAPTERTIMEEND
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
int64_t pos
absolute offset in the file where the master's elements start
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
void av_freep(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
#define MATROSKA_ID_FILEDESC
int64_t cluster_pos
file offset of the current cluster
static const AVCodecTag additional_audio_tags[]
const char * av_default_item_name(void *ctx)
Return the context name.
enum AVSampleFormat sample_fmt
audio sample format
#define MATROSKA_ID_CHAPLANG
static int srt_get_duration(uint8_t **buf)
static int mkv_write_tag(AVFormatContext *s, AVDictionary *m, unsigned int elementid, unsigned int uid, ebml_master *tags)
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
#define MATROSKA_ID_TRACKLANGUAGE
const AVCodecTag ff_codec_movvideo_tags[]
static int ebml_id_size(unsigned int id)
#define OPUS_SEEK_PREROLL
Seek preroll value for opus.
static unsigned int av_lfg_get(AVLFG *c)
Get the next random unsigned 32-bit number using an ALFG.
static const uint8_t offset[511][2]
static av_cold int end(AVCodecContext *avctx)
int id
unique ID to identify the chapter
#define MATROSKA_ID_TIMECODESCALE
#define MATROSKA_ID_SIMPLEBLOCK
#define MATROSKA_ID_EDITIONFLAGHIDDEN
static int mkv_write_srt_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
#define MATROSKA_ID_BLOCKMORE
#define MATROSKA_ID_CUERELATIVEPOSITION
#define MATROSKA_ID_AUDIOOUTSAMPLINGFREQ
static double av_q2d(AVRational a)
Convert rational to double.
#define MATROSKA_ID_VIDEODISPLAYWIDTH
#define MATROSKA_ID_BLOCKADDITIONS
static void get_aac_sample_rates(AVFormatContext *s, AVCodecContext *codec, int *sample_rate, int *output_sample_rate)
static EbmlSyntax ebml_header[]
#define AV_LOG_VERBOSE
Detailed information.
#define CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
#define MATROSKA_ID_TRACKNUMBER
int duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
const OptionDef options[]
#define MATROSKA_ID_SEGMENTUID
static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes)
Write a number in EBML variable length format.
static int mkv_add_seekhead_entry(mkv_seekhead *seekhead, unsigned int elementid, uint64_t filepos)
int64_t segment_offset
the file offset to the beginning of the segment
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
#define MATROSKA_ID_TRACKUID
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq) av_const
Rescale a 64-bit integer by 2 rational numbers.
#define MATROSKA_ID_VIDEOSTEREOMODE
uint32_t chapter_id_offset
static int mkv_add_cuepoint(mkv_cues *cues, int stream, int64_t ts, int64_t cluster_pos, int64_t relative_pos, int64_t duration)
#define FF_COMPLIANCE_NORMAL
int av_copy_packet_side_data(AVPacket *dst, AVPacket *src)
Copy packet side data.
AVCodecID
Identify the syntax and semantics of the bitstream.
static int mkv_write_tags(AVFormatContext *s)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
#define MATROSKA_ID_BLOCKDURATION
#define EBML_ID_EBMLREADVERSION
#define MAX_CUETRACKPOS_SIZE
per-cuepoint-track - 5 1-byte EBML IDs, 5 1-byte EBML sizes, 4 8-byte uint max
void * priv_data
Format private data.
int reserved_size
-1 if appending to file
#define MATROSKA_ID_CLUSTER
const char * av_convert_lang_to(const char *lang, enum AVLangCodespace target_codespace)
Convert a language code to a target codespace.
static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecContext *codec)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
#define MATROSKA_ID_FILEMIMETYPE
int64_t convergence_duration
Time difference in AVStream->time_base units from the pts of this packet to the point at which the ou...
#define MATROSKA_ID_WRITINGAPP
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
static int mkv_blockgroup_size(int pkt_size)
const char * avcodec_get_name(enum AVCodecID id)
Get the name of a codec.
static int ebml_num_size(uint64_t num)
Calculate how many bytes are needed to represent a given number in EBML.
enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
Get the type of the given codec.
static int mkv_write_chapters(AVFormatContext *s)
#define EBML_ID_EBMLMAXIDLENGTH
#define MATROSKA_ID_CHAPTERFLAGHIDDEN
const AVCodecTag ff_codec_wav_tags[]
static mkv_seekhead * mkv_start_seekhead(AVIOContext *pb, int64_t segment_offset, int numelements)
Initialize a mkv_seekhead element to be ready to index level 1 Matroska elements. ...
int ff_avc_parse_nal_units_buf(const uint8_t *buf_in, uint8_t **buf, int *size)
int flags
A combination of AV_PKT_FLAG values.
static void mkv_write_block(AVFormatContext *s, AVIOContext *pb, unsigned int blockid, AVPacket *pkt, int flags)
const CodecMime ff_mkv_mime_tags[]
unsigned int nb_streams
A list of all streams in the file.
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
#define EBML_ID_EBMLVERSION
int64_t av_rescale(int64_t a, int64_t b, int64_t c) av_const
Rescale a 64-bit integer with rounding to nearest.
void ffio_fill(AVIOContext *s, int b, int count)
#define MATROSKA_ID_TAGTARGETS
const AVCodecTag ff_codec_bmp_tags[]
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
#define MATROSKA_ID_TAGNAME
uint8_t * av_packet_get_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
const char *const ff_matroska_video_stereo_mode[MATROSKA_VIDEO_STEREO_MODE_COUNT]
#define MATROSKA_ID_CHAPTERFLAGENABLED
static int write_trailer(AVFormatContext *s1)
void * av_malloc(size_t size) av_malloc_attrib 1(1)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
int ff_wv_parse_header(WvHeader *wv, const uint8_t *data)
Parse a WavPack block header.
#define MATROSKA_ID_SIMPLETAG
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
int avoid_negative_ts
Avoid negative timestamps during muxing.
#define MATROSKA_ID_CHAPTERATOM
#define CONFIG_LIBVORBIS_ENCODER
#define MATROSKA_ID_VIDEOCOLORSPACE
#define MATROSKA_ID_CHAPTERS
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
#define MATROSKA_ID_AUDIOSAMPLINGFREQ
static void put_ebml_float(AVIOContext *pb, unsigned int elementid, double val)
static void put_ebml_string(AVIOContext *pb, unsigned int elementid, const char *str)
int64_t end
chapter start/end time in time_base units
#define MATROSKA_ID_TRACKFLAGFORCED
enum AVMediaType codec_type
void av_lfg_init(AVLFG *c, unsigned int seed)
static int64_t mkv_write_cues(AVIOContext *pb, mkv_cues *cues, mkv_track *tracks, int num_tracks)
#define MATROSKA_ID_SEEKID
int sample_rate
samples per second
main external API structure.
#define MATROSKA_ID_BLOCK
#define MATROSKA_ID_TAGTARGETS_TRACKUID
#define MATROSKA_ID_TAGLANG
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
#define MATROSKA_ID_TRACKS
AVIOContext * pb
I/O context.
Data found in BlockAdditional element of matroska container.
#define MATROSKA_ID_TRACKNAME
#define MATROSKA_ID_SEEKENTRY
Describe the class of an AVClass context structure.
#define MATROSKA_ID_EDITIONENTRY
#define MAX_CUEPOINT_SIZE(num_tracks)
per-cuepoint - 2 1-byte EBML IDs, 2 1-byte EBML sizes, 8-byte uint max
#define MATROSKA_ID_BLOCKGROUP
#define MATROSKA_ID_VIDEOPIXELHEIGHT
static int mkv_write_tracks(AVFormatContext *s)
rational number numerator/denominator
static void put_ebml_uint(AVIOContext *pb, unsigned int elementid, uint64_t val)
#define MATROSKA_ID_CUEDURATION
#define MATROSKA_ID_CUETIME
static int64_t mkv_write_seekhead(AVIOContext *pb, mkv_seekhead *seekhead)
Write the seek head to the file and free it.
Recommmends skipping the specified number of samples.
int avpriv_split_xiph_headers(uint8_t *extradata, int extradata_size, int first_header_size, uint8_t *header_start[3], int header_len[3])
Split a single extradata buffer into the three headers that most Xiph codecs use. ...
static int mkv_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
#define MATROSKA_ID_TITLE
#define MATROSKA_ID_TRACKVIDEO
static int mkv_strip_wavpack(const uint8_t *src, uint8_t **pdst, int *size)
static int ass_get_duration(const uint8_t *p)
static void put_ebml_id(AVIOContext *pb, unsigned int id)
int ff_flac_write_header(AVIOContext *pb, AVCodecContext *codec, int last_block)
void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf)
static int put_wv_codecpriv(AVIOContext *pb, AVCodecContext *codec)
#define MATROSKA_ID_ATTACHMENTS
#define MATROSKA_ID_CHAPTERDISPLAY
static av_always_inline int ff_subtitles_next_line(const char *ptr)
Get the number of characters to increment to jump to the next line, or to the end of the string...
static const uint16_t scale[4]
#define MATROSKA_ID_FILENAME
#define MATROSKA_ID_BLOCKADDITIONAL
const AVMetadataConv ff_mkv_metadata_conv[]
#define MATROSKA_ID_CODECID
static const AVCodecTag additional_video_tags[]
#define MATROSKA_ID_VIDEOALPHAMODE
static int mkv_write_trailer(AVFormatContext *s)
#define MATROSKA_ID_CUETRACK
#define MATROSKA_ID_SEEKPOSITION
#define MATROSKA_ID_CODECDELAY
#define MATROSKA_ID_CHAPTERTIMESTART
common internal api header.
static void put_ebml_binary(AVIOContext *pb, unsigned int elementid, const void *buf, int size)
static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, AVCodecContext *codec, int native_id, int qt_id)
static int mkv_write_flush_packet(AVFormatContext *s, AVPacket *pkt)
int disposition
AV_DISPOSITION_* bit field.
int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc)
static void put_ebml_void(AVIOContext *pb, uint64_t size)
Write a void element of a given size.
AVRational time_base
time base in which the start/end timestamps are specified
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
int64_t nb_frames
number of frames in this stream if known or 0
#define MATROSKA_ID_SEGMENT
int avpriv_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf, int bit_size, int sync_extension)
Parse MPEG-4 systems extradata to retrieve audio configuration.
The optional settings (rendering instructions) that immediately follow the timestamp specifier of a W...
#define MATROSKA_ID_SEEKHEAD
ASS as defined in Matroska.
struct AVOutputFormat * oformat
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
#define AVERROR_INVALIDDATA
#define MATROSKA_ID_POINTENTRY
mkv_seekhead_entry * entries
#define MATROSKA_VIDEO_STEREO_MODE_COUNT
#define MATROSKA_ID_FILEUID
#define MATROSKA_ID_CHAPTERUID
Opaque data information usually sparse.
static void write_header(FFV1Context *f)
static av_always_inline uint64_t av_double2int(double f)
Reinterpret a double as a 64-bit integer.
int64_t relative_pos
relative offset from the position of the cluster containing the block
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
static void mkv_flush_dynbuf(AVFormatContext *s)
#define EBML_ID_EBMLMAXSIZELENGTH
#define MATROSKA_ID_CHAPSTRING
#define MATROSKA_ID_TAGSTRING
#define AV_DICT_IGNORE_SUFFIX
uint32_t av_get_random_seed(void)
Get a seed to use in conjunction with random functions.
#define av_assert0(cond)
assert() equivalent, that is always enabled.
static int mkv_write_packet(AVFormatContext *s, AVPacket *pkt)
#define MATROSKA_ID_DURATION
#define MAX_SEEKENTRY_SIZE
2 bytes * 3 for EBML IDs, 3 1-byte EBML lengths, 8 bytes for 64 bit offset, 4 bytes for target EBML I...
static mkv_cues * mkv_start_cues(int64_t segment_offset)
#define EBML_ID_DOCTYPEVERSION
static void end_ebml_master(AVIOContext *pb, ebml_master master)
#define CONFIG_LIBX264_ENCODER
int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt)
Return number of bytes per sample.
#define MATROSKA_ID_ATTACHEDFILE
static ebml_master start_ebml_master(AVIOContext *pb, unsigned int elementid, uint64_t expectedsize)
mkv_seekhead * main_seekhead
This structure stores compressed data.
static int write_packet(AVFormatContext *s1, AVPacket *pkt)
static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance)
static void put_xiph_size(AVIOContext *pb, int size)
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
#define MATROSKA_ID_VIDEOPIXELWIDTH
int ff_isom_write_avcc(AVIOContext *pb, const uint8_t *data, int len)
#define MATROSKA_ID_TRACKAUDIO
#define AV_NOPTS_VALUE
Undefined timestamp value.
const CodecTags ff_mkv_codec_tags[]
void * av_mallocz(size_t size) av_malloc_attrib 1(1)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
#define MATROSKA_ID_DISCARDPADDING
struct AVSHA * av_sha_alloc(void)
Allocate an AVSHA context.