59 #define MAX_SEEKHEAD_ENTRIES 7 61 #define IS_SEEKABLE(pb, mkv) (((pb)->seekable & AVIO_SEEKABLE_NORMAL) && \ 120 #define MODE_MATROSKAv2 0x01 121 #define MODE_WEBM 0x02 159 uint32_t segment_uid[4];
164 #define MAX_EBML_HEADER_SIZE 35 168 #define MAX_SEEKENTRY_SIZE 21 171 #define MAX_CUETRACKPOS_SIZE 40 174 #define OPUS_SEEK_PREROLL 80000000 228 num |= 1ULL << bytes * 7;
229 for (
int i = bytes - 1;
i >= 0;
i--)
247 bytes = needed_bytes;
273 for (i = bytes - 1; i >= 0; i--)
280 uint64_t
tmp = 2*(val < 0 ? val^-1 :
val);
287 for (i = bytes - 1; i >= 0; i--)
299 const void *buf,
int size)
337 uint64_t expectedsize)
382 int length_size,
int keep_buffer,
386 int ret,
size, skip = 0;
389 if ((ret = (*dyn_cp)->error) < 0)
490 int error_on_seek_failure,
int64_t destpos)
498 return error_on_seek_failure ? ret64 : 0;
524 if ((ret64 =
avio_seek(pb, destpos, SEEK_SET)) < 0)
565 uint64_t
pts = entry->pts;
573 for (
int j = 0; j < num_tracks; j++)
574 tracks[j].has_cue = 0;
577 int idx = entry->stream_idx;
587 if (entry->duration != -1)
590 }
while (++entry < end && entry->pts == pts);
592 if ((ret = cuepoint->
error) < 0)
605 const uint8_t *header_start[3];
607 int first_header_size;
611 first_header_size = 30;
613 first_header_size = 42;
616 first_header_size, header_start, header_len);
623 for (j = 0; j < 2; j++) {
626 for (j = 0; j < 3; j++)
627 avio_write(pb, header_start[j], header_len[j]);
661 av_dict_set(&dict,
"WAVEFORMATEXTENSIBLE_CHANNEL_MASK", buf, 0);
678 const uint8_t *extradata,
int extradata_size,
690 if (ret < 0 && (extradata_size || !
IS_SEEKABLE(s->
pb, mkv))) {
692 "Error parsing AAC extradata, unable to determine samplerate.\n");
738 "Invalid extradata found, ALAC expects a 36-byte " 764 int native_id,
int qt_id)
768 int ret, codecpriv_size;
787 for(i = 0; i < 0x5a - 8; i++)
823 if ((ret = dyn_cp->
error) >= 0 && codecpriv_size)
837 uint8_t colour[(2 + 1 + 8) * 18 + (2 + 1) + 1];
840 const void *side_data;
939 4 * (2 + 1 + 8) + (2 + 1 + 20));
972 (
double) spherical->
yaw / (1 << 16));
973 if (spherical->
pitch)
975 (
double) spherical->
pitch / (1 << 16));
978 (
double) spherical->
roll / (1 << 16));
986 switch (field_order) {
1000 switch (field_order) {
1034 int stereo_mode = atoi(tag->
value);
1042 if (stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB &&
1043 stereo_mode != 10 && stereo_mode != 12) {
1053 switch (stereo->
type) {
1103 "The specified stereo mode is not valid.\n");
1123 int output_sample_rate = 0;
1124 int display_width_div = 1;
1125 int display_height_div = 1;
1134 &sample_rate, &output_sample_rate);
1170 codec_id =
"D_WEBVTT/CAPTIONS";
1173 codec_id =
"D_WEBVTT/DESCRIPTIONS";
1176 codec_id =
"D_WEBVTT/METADATA";
1179 codec_id =
"D_WEBVTT/SUBTITLES";
1186 "Only VP8 or VP9 or AV1 video and Vorbis or Opus audio and WebVTT subtitles are supported for WebM.\n");
1206 av_log(s,
AV_LOG_ERROR,
"Raw RGB is not supported Natively in Matroska, you can use AVI or NUT or\n" 1207 "If you would like to store it anyway using VFW mode, enable allow_raw_vfw (-allow_raw_vfw 1)\n");
1235 else if (!native_id) {
1253 &display_height_div);
1267 if (d_width > INT_MAX) {
1271 if (d_width != par->
width || display_width_div != 1 || display_height_div != 1) {
1272 if (mkv->
mode ==
MODE_WEBM || display_width_div != 1 || display_height_div != 1) {
1286 }
else if (display_width_div != 1 || display_height_div != 1) {
1307 if (codecdelay < 0) {
1331 if (output_sample_rate)
1360 av_log(s,
AV_LOG_ERROR,
"Only audio, video, and subtitles are supported for Matroska.\n");
1380 int i, ret, video_default_idx, audio_default_idx, subtitle_default_idx;
1390 int video_idx, audio_idx, subtitle_idx;
1392 video_idx = video_default_idx =
1393 audio_idx = audio_default_idx =
1394 subtitle_idx = subtitle_default_idx = -1;
1400 #define CASE(type, variable) \ 1401 case AVMEDIA_TYPE_ ## type: \ 1402 variable ## _idx = i; \ 1403 if (st->disposition & AV_DISPOSITION_DEFAULT) \ 1404 variable ## _default_idx = i; \ 1408 CASE(SUBTITLE, subtitle)
1413 video_default_idx =
FFMAX(video_default_idx, video_idx);
1414 audio_default_idx =
FFMAX(audio_default_idx, audio_idx);
1416 subtitle_default_idx =
FFMAX(subtitle_default_idx, subtitle_idx);
1422 i == video_default_idx || i == audio_default_idx ||
1423 i == subtitle_default_idx;
1444 if ((p = strrchr(p,
'-')) &&
1452 else if (*p >=
'a' && *p <=
'z')
1504 uint32_t elementid, uint64_t
uid)
1617 uint64_t chapter_id_offset = 0;
1626 chapter_id_offset = 1;
1649 if (chapterstart < 0 || chapterstart > chapterend || chapterend < 0) {
1651 "Invalid chapter start (%"PRId64
") or end (%"PRId64
").\n",
1652 chapterstart, chapterend);
1659 (uint32_t)c->
id + chapter_id_offset);
1673 (uint32_t)c->
id + chapter_id_offset);
1710 return "text/plain";
1734 const char *mimetype;
1768 av_log(s,
AV_LOG_DEBUG,
"get_metadata_duration found duration in context metadata: %" PRId64
"\n", us);
1777 max =
FFMAX(max, us);
1841 const char *ident =
"Lavf";
1848 int64_t date_utc = (creation_time - 978307200000000LL) * 1000;
1850 AV_WB64(date_utc_buf, date_utc);
1863 av_log(s,
AV_LOG_DEBUG,
"Write early duration from recording time = %" PRIu64
"\n", scaledDuration);
1864 }
else if (metadata_duration > 0) {
1867 av_log(s,
AV_LOG_DEBUG,
"Write early duration from metadata = %" PRIu64
"\n", scaledDuration);
1943 int size = pkt_size + track_num_size + 3;
1988 memcpy(dst + offset, src, header.
blocksize);
2004 uint32_t blockid,
const AVPacket *
pkt,
int keyframe)
2012 uint64_t additional_id;
2014 unsigned track_number = track->
track_num;
2015 ebml_master block_group, block_additions, block_more;
2022 "Writing block of size %d with pts %" PRId64
", dts %" PRId64
", " 2023 "duration %" PRId64
" at relative offset %" PRId64
" in cluster " 2024 "at offset %" PRId64
". TrackNumber %u, keyframe %d\n",
2058 if (side_data && side_data_size >= 10) {
2069 if (side_data_size < 8 || (additional_id =
AV_RB64(side_data)) != 1) {
2073 side_data_size -= 8;
2077 if (side_data_size || discard_padding) {
2088 if (data != pkt->
data)
2095 if (discard_padding)
2098 if (side_data_size) {
2105 side_data, side_data_size);
2109 if (side_data_size || discard_padding)
2120 int id_size, settings_size,
size;
2121 const char *
id, *settings;
2123 const int flags = 0;
2133 settings = settings ? settings :
"";
2135 size = id_size + 1 + settings_size + 1 + pkt->
size;
2140 "Writing block of size %d with pts %" PRId64
", dts %" PRId64
", " 2141 "duration %" PRId64
" at relative offset %" PRId64
" in cluster " 2142 "at offset %" PRId64
". TrackNumber %u, keyframe %d\n",
2154 avio_printf(pb,
"%.*s\n%.*s\n%.*s", id_size,
id, settings_size, settings, pkt->
size, pkt->
data);
2187 int side_data_size = 0, ret;
2194 if (side_data_size && mkv->
track.
bc) {
2195 int filler, output_sample_rate = 0;
2200 if (!output_sample_rate)
2205 memcpy(par->
extradata, side_data, side_data_size);
2216 av_log(s,
AV_LOG_ERROR,
"Error parsing AAC extradata, unable to determine samplerate.\n");
2221 if (side_data_size && mkv->
track.
bc) {
2246 if ((ret = dyn_cp->
error) < 0 ||
2258 memcpy(par->
extradata, side_data, side_data_size);
2291 if ((int16_t)cluster_time != cluster_time) {
2307 "Starting new cluster with timestamp " 2308 "%" PRId64
" at offset %" PRId64
" bytes\n",
2335 #if FF_API_CONVERGENCE_DURATION 2338 if (pkt->convergence_duration > 0) {
2339 duration = pkt->convergence_duration;
2371 int start_new_cluster;
2390 start_new_cluster = keyframe;
2394 start_new_cluster = 1;
2399 cluster_size > 4 * 1024))) {
2400 start_new_cluster = 1;
2402 start_new_cluster = 0;
2404 if (start_new_cluster) {
2422 "Could not write cached audio packet ret:%d\n", ret);
2447 "Flushing cluster at offset %" PRIu64
" bytes\n",
2467 "Could not write cached audio packet ret:%d\n", ret);
2491 int length_size = 0;
2507 size += 4 + length_size;
2510 "Insufficient space reserved for Cues: " 2511 "%d < %"PRIu64
". No Cues will be output.\n",
2536 if (size < mkv->reserve_cues_space)
2584 char duration_string[20] =
"";
2591 snprintf(duration_string, 20,
"%02d:%02d:%012.9f",
2592 (
int) duration_sec / 3600, ((
int) duration_sec / 60) % 60,
2593 fmod(duration_sec, 60));
2647 for (k = 0; k <
i; k++) {
2648 if (tracks[k].uid == uid)
2660 unsigned nb_tracks = 0;
2671 "The Matroska muxer does not yet support muxing %s\n",
2696 for (i = 0; i < 4; i++)
2716 "as WebM doesn't support attachments.\n", i);
2719 "tag and it cannot be deduced from the codec id.\n", i);
2731 if (mkv->
is_dash && nb_tracks != 1)
2782 #define OFFSET(x) offsetof(MatroskaMuxContext, x) 2783 #define FLAGS AV_OPT_FLAG_ENCODING_PARAM 2785 {
"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 },
2786 {
"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 },
2787 {
"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 },
2788 {
"dash",
"Create a WebM file conforming to WebM DASH specification",
OFFSET(is_dash),
AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2789 {
"dash_track_number",
"Track number for the DASH stream",
OFFSET(dash_track_number),
AV_OPT_TYPE_INT, { .i64 = 1 }, 1, INT_MAX, FLAGS },
2790 {
"live",
"Write files assuming it is a live stream.",
OFFSET(is_live),
AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2791 {
"allow_raw_vfw",
"allow RAW VFW mode",
OFFSET(allow_raw_vfw),
AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
2792 {
"write_crc32",
"write a CRC32 element inside every Level 1 element",
OFFSET(write_crc),
AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
2794 {
"infer",
"For each track type, mark the first track of disposition default as default; if none exists, mark the first track as default.", 0,
AV_OPT_TYPE_CONST, { .i64 =
DEFAULT_MODE_INFER }, 0, 0,
FLAGS,
"default_mode" },
2795 {
"infer_no_subs",
"For each track type, mark the first track of disposition default as default; for audio and video: if none exists, mark the first track as default.", 0,
AV_OPT_TYPE_CONST, { .i64 =
DEFAULT_MODE_INFER_NO_SUBS }, 0, 0,
FLAGS,
"default_mode" },
2800 #if CONFIG_MATROSKA_MUXER 2801 static const AVClass matroska_class = {
2811 .mime_type =
"video/x-matroska",
2812 .extensions =
"mkv",
2832 .priv_class = &matroska_class,
2836 #if CONFIG_WEBM_MUXER 2837 static const AVClass webm_class = {
2847 .mime_type =
"video/webm",
2848 .extensions =
"webm",
2862 .priv_class = &webm_class,
2866 #if CONFIG_MATROSKA_AUDIO_MUXER 2867 static const AVClass mka_class = {
2876 .mime_type =
"audio/x-matroska",
2877 .extensions =
"mka",
2893 .priv_class = &mka_class,
unsigned int nb_chapters
Number of chapters in AVChapter array.
int32_t pitch
Rotation around the right vector [-90, 90].
Context structure for the Lagged Fibonacci PRNG.
#define MATROSKA_ID_SEEKPREROLL
#define AV_STEREO3D_FLAG_INVERT
Inverted views, Right/Bottom represents the left view.
#define MATROSKA_ID_VIDEOPROJECTIONPOSEYAW
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
enum AVChromaLocation chroma_location
void avio_wb64(AVIOContext *s, uint64_t val)
#define MATROSKA_ID_BLOCKADDID
#define MATROSKA_ID_TRACKDEFAULTDURATION
enum AVFieldOrder field_order
Video only.
void avio_wl16(AVIOContext *s, unsigned int val)
static void put_ebml_size_unknown(AVIOContext *pb, int bytes)
Write an EBML size meaning "unknown size".
enum AVColorTransferCharacteristic color_trc
#define MATROSKA_ID_VIDEOFLAGINTERLACED
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
#define MATROSKA_ID_VIDEOCOLOR_GX
static int start_ebml_master_crc32(AVIOContext **dyn_cp, MatroskaMuxContext *mkv)
static const char * format[]
#define MATROSKA_ID_DATEUTC
int sizebytes
how many bytes were reserved for the size
The optional first identifier line of a WebVTT cue.
#define MATROSKA_ID_TRACKFLAGLACING
unsigned MaxCLL
Max content light level (cd/m^2).
#define MATROSKA_ID_TRACKENTRY
static int mkv_write_packet(AVFormatContext *s, const AVPacket *pkt)
#define MATROSKA_ID_VIDEODISPLAYHEIGHT
int64_t cluster_pos
offset of the cluster containing the block relative to the segment
void ff_put_bmp_header(AVIOContext *pb, AVCodecParameters *par, int for_asf, int ignore_extradata)
int ff_put_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int flags)
Write WAVEFORMAT header structure.
static int mkv_init(struct AVFormatContext *s)
#define MAX_SEEKHEAD_ENTRIES
static int mkv_write_packet_internal(AVFormatContext *s, const AVPacket *pkt)
#define MATROSKA_ID_VIDEOPROJECTIONPOSEROLL
#define MATROSKA_ID_CUETRACKPOSITION
#define MATROSKA_ID_CODECPRIVATE
#define AV_LOG_WARNING
Something somehow does not look correct.
#define LIBAVUTIL_VERSION_INT
int av_parse_time(int64_t *timeval, const char *timestr, int duration)
Parse timestr and return in *time a corresponding number of microseconds.
static av_cold int init(AVCodecContext *avctx)
#define MATROSKA_ID_AUDIOBITDEPTH
#define CASE(type, variable)
#define MATROSKA_ID_TRACKFLAGDEFAULT
static const AVCodecTag additional_subtitle_tags[]
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
static int mkv_write_attachments(AVFormatContext *s)
Video represents a portion of a sphere mapped on a flat surface using equirectangular projection...
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
#define MATROSKA_ID_TAGTARGETS_ATTACHUID
int ff_hevc_annexb2mp4_buf(const uint8_t *buf_in, uint8_t **buf_out, int *size, int filter_ps, int *ps_count)
Writes Annex B formatted HEVC NAL units to a data buffer.
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
#define MATROSKA_ID_FILEDATA
const char * av_default_item_name(void *ptr)
Return the context name.
AVFormatInternal * internal
An opaque field for libavformat internal usage.
#define EBML_ID_DOCTYPEREADVERSION
#define us(width, name, range_min, range_max, subs,...)
#define MATROSKA_ID_BLOCKREFERENCE
static int mkv_write_header(AVFormatContext *s)
#define MATROSKA_ID_TRACKTYPE
enum AVMediaType codec_type
#define MATROSKA_ID_TAGTARGETS_CHAPTERUID
int ff_flac_is_native_layout(uint64_t channel_layout)
int64_t duration
duration of the block according to time base
static av_always_inline uint64_t av_double2int(double f)
Reinterpret a double as a 64-bit integer.
#define MATROSKA_ID_VIDEOCOLOR_RX
Video represents a sphere mapped on a flat surface using equirectangular projection.
static int mkv_write_tag(MatroskaMuxContext *mkv, const AVDictionary *m, AVIOContext **pb, ebml_master *tag, uint32_t elementid, uint64_t uid)
#define MATROSKA_ID_MUXINGAPP
int64_t cluster_time_limit
#define MATROSKA_ID_AUDIOCHANNELS
#define MATROSKA_ID_VIDEOPROJECTIONTYPE
Views are next to each other.
static void put_ebml_length(AVIOContext *pb, uint64_t length, int bytes)
Write a length as EBML variable length integer.
#define MATROSKA_ID_CUECLUSTERPOSITION
#define MATROSKA_ID_VIDEOCOLOR_LUMINANCEMAX
#define MAX_EBML_HEADER_SIZE
2 bytes * 7 for EBML IDs, 7 1-byte EBML lengths, 6 1-byte uint, 8 byte for "matroska" doctype string ...
int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
Converts AVChromaLocation to swscale x/y chroma position.
#define MATROSKA_ID_VIDEOCOLORCHROMASITINGHORZ
#define MATROSKA_ID_EDITIONFLAGDEFAULT
#define MATROSKA_ID_CLUSTERTIMECODE
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
This struct describes the properties of an encoded stream.
#define MATROSKA_ID_CHAPTERTIMEEND
enum AVColorSpace color_space
int64_t pos
absolute offset in the containing AVIOContext where the master's elements start
MatroskaVideoStereoModeType
Mastering display metadata (based on SMPTE-2086:2014).
#define MATROSKA_ID_FILEDESC
static int query_codec(enum AVCodecID id, int std_compliance)
int64_t cluster_pos
file offset of the current Cluster
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 av_assert0(cond)
assert() equivalent, that is always enabled.
static const AVCodecTag additional_audio_tags[]
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
void avio_wl32(AVIOContext *s, unsigned int val)
#define MATROSKA_ID_VIDEOCOLOR_BX
#define MATROSKA_ID_CHAPLANG
int avpriv_mpeg4audio_get_config2(MPEG4AudioConfig *c, const uint8_t *buf, int size, int sync_extension, void *logctx)
Parse MPEG-4 systems extradata from a raw buffer to retrieve audio configuration. ...
#define MATROSKA_ID_TRACKLANGUAGE
A point in the output bytestream where the underlying AVIOContext might flush the buffer depending on...
Stereo 3D type: this structure describes how two videos are packed within a single video surface...
const AVCodecTag ff_codec_movvideo_tags[]
#define OPUS_SEEK_PREROLL
Seek preroll value for opus.
int ff_mkv_stereo3d_conv(AVStream *st, MatroskaVideoStereoModeType stereo_mode)
static av_cold int end(AVCodecContext *avctx)
int id
unique ID to identify the chapter
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
#define MATROSKA_ID_TIMECODESCALE
static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int native_id, int qt_id)
#define MATROSKA_ID_SIMPLEBLOCK
void avio_write_marker(AVIOContext *s, int64_t time, enum AVIODataMarkerType type)
Mark the written bytestream as a specific type.
uint8_t * av_stream_get_side_data(const AVStream *stream, enum AVPacketSideDataType type, int *size)
Get side information from stream.
static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb, const AVCodecParameters *par)
#define MATROSKA_ID_BLOCKMORE
AVStream ** streams
A list of all streams in the file.
#define MATROSKA_ID_CUERELATIVEPOSITION
A point in the output bytestream where a demuxer can start parsing (for non self synchronizing bytest...
#define MATROSKA_ID_AUDIOOUTSAMPLINGFREQ
#define MATROSKA_ID_VIDEOCOLOR
Public header for CRC hash function implementation.
int initial_padding
Audio only.
static int webm_query_codec(enum AVCodecID codec_id, int std_compliance)
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
int flags
Flags modifying the (de)muxer behaviour.
static double av_q2d(AVRational a)
Convert an AVRational to a double.
#define CONFIG_LIBVPX_VP9_ENCODER
#define MATROSKA_ID_VIDEODISPLAYWIDTH
int ff_isom_write_av1c(AVIOContext *pb, const uint8_t *buf, int size)
Writes AV1 extradata (Sequence Header and Metadata OBUs) to the provided AVIOContext.
#define MATROSKA_ID_BLOCKADDITIONS
static int mkv_add_cuepoint(MatroskaMuxContext *mkv, int stream, int64_t ts, int64_t cluster_pos, int64_t relative_pos, int64_t duration)
static EbmlSyntax ebml_header[]
static int mkv_check_tag(const AVDictionary *m, uint32_t elementid)
Video is not stereoscopic (and metadata has to be there).
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
static const uint8_t header[24]
#define MATROSKA_ID_TRACKNUMBER
#define MATROSKA_ID_VIDEOCOLOR_WHITEY
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
static uint64_t mkv_get_uid(const mkv_track *tracks, int i, AVLFG *c)
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Allocate, reallocate, or free an array.
#define MATROSKA_ID_SEGMENTUID
static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv, AVStream *st, mkv_track *track, AVIOContext *pb, int is_default)
uint64_t channel_layout
Audio only.
static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes)
Write a number as EBML variable length integer on bytes bytes.
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
static void mkv_add_seekhead_entry(MatroskaMuxContext *mkv, uint32_t elementid, uint64_t filepos)
#define MATROSKA_ID_TRACKUID
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
#define MATROSKA_ID_VIDEOSTEREOMODE
static void put_ebml_id(AVIOContext *pb, uint32_t id)
Content light level needed by to transmit HDR over HDMI (CTA-861.3).
#define i(width, name, range_min, range_max)
AVCodecID
Identify the syntax and semantics of the bitstream.
static int mkv_write_tags(AVFormatContext *s)
#define MATROSKA_ID_VIDEOCOLOR_BY
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static void put_ebml_float(AVIOContext *pb, uint32_t elementid, double val)
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
AVDictionary * metadata
Metadata that applies to the whole file.
int flags
Additional information about the frame packing.
#define MATROSKA_ID_BLOCKDURATION
#define EBML_ID_EBMLREADVERSION
#define MATROSKA_ID_VIDEOCOLORMAXCLL
#define MAX_CUETRACKPOS_SIZE
4 * (1-byte EBML ID, 1-byte EBML size, 8-byte uint max)
#define MATROSKA_ID_VIDEOCOLOR_WHITEX
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
#define MATROSKA_ID_CLUSTER
const char * ff_convert_lang_to(const char *lang, enum AVLangCodespace target_codespace)
Convert a language code to a target codespace.
#define MATROSKA_ID_VIDEOCOLORCHROMASITINGVERT
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
int ff_av1_filter_obus_buf(const uint8_t *in, uint8_t **out, int *size, int *offset)
Filter out AV1 OBUs not meant to be present in ISOBMFF sample data and return the result in a data bu...
Views are packed per line, as if interlaced.
enum AVColorPrimaries color_primaries
void ffio_reset_dyn_buf(AVIOContext *s)
Reset a dynamic buffer.
#define MATROSKA_ID_FILEMIMETYPE
#define MATROSKA_ID_WRITINGAPP
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
int ff_isom_write_hvcc(AVIOContext *pb, const uint8_t *data, int size, int ps_array_completeness)
Writes HEVC extradata (parameter sets, declarative SEI NAL units) to the provided AVIOContext...
const char *const ff_matroska_video_stereo_mode[MATROSKA_VIDEO_STEREOMODE_TYPE_NB]
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
static void put_ebml_void(AVIOContext *pb, int size)
Write a void element of a given size.
enum AVMediaType codec_type
General type of the encoded data.
static int ebml_num_size(uint64_t num)
Returns how many bytes are needed to represent a number as EBML variable length integer.
static int mkv_write_chapters(AVFormatContext *s)
#define EBML_ID_EBMLMAXIDLENGTH
static const uint8_t offset[127][2]
static int mkv_write_seekhead(AVIOContext *pb, MatroskaMuxContext *mkv, int error_on_seek_failure, int64_t destpos)
Write the SeekHead to the file at the location reserved for it and seek to destpos afterwards...
AVRational avg_frame_rate
Average framerate.
const AVCodecTag ff_codec_wav_tags[]
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.
int extradata_size
Size of the extradata content in bytes.
const CodecTags ff_webm_codec_tags[]
Views are alternated temporally.
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
uint32_t bound_bottom
Distance from the bottom edge.
static int end_ebml_master_crc32(AVIOContext *pb, AVIOContext **dyn_cp, MatroskaMuxContext *mkv, uint32_t id, int length_size, int keep_buffer, int add_seekentry)
static int mkv_write_simpletag(AVIOContext *pb, const AVDictionaryEntry *t)
static int ebml_length_size(uint64_t length)
Calculate how many bytes are needed to represent the length field of an EBML element whose payload ha...
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Video frame is split into 6 faces of a cube, and arranged on a 3x2 layout.
#define MATROSKA_ID_VIDEOCOLOR_LUMINANCEMIN
audio channel layout utility functions
#define EBML_ID_EBMLVERSION
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
void ffio_fill(AVIOContext *s, int b, int count)
#define AV_TIME_BASE
Internal time base represented as integer.
#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
static int64_t get_metadata_duration(AVFormatContext *s)
static int write_trailer(AVFormatContext *s1)
static void bit_depth(AudioStatsContext *s, uint64_t mask, uint64_t imask, AVRational *depth)
void avio_wb24(AVIOContext *s, unsigned int val)
This side data should be associated with a video stream and corresponds to the AVSphericalMapping str...
uint32_t bound_right
Distance from the right edge.
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 ...
uint32_t av_crc(const AVCRC *ctx, uint32_t crc, const uint8_t *buffer, size_t length)
Calculate the CRC of a block.
static int end_ebml_master_crc32_tentatively(AVIOContext *pb, ebml_stored_master *elem, MatroskaMuxContext *mkv, uint32_t id)
Output EBML master.
int avoid_negative_ts
Avoid negative timestamps during muxing.
#define MATROSKA_ID_CHAPTERATOM
int avpriv_split_xiph_headers(const uint8_t *extradata, int extradata_size, int first_header_size, const uint8_t *header_start[3], int header_len[3])
Split a single extradata buffer into the three headers that most Xiph codecs use. ...
#define CONFIG_LIBVORBIS_ENCODER
static int mkv_write_native_codecprivate(AVFormatContext *s, AVIOContext *pb, const AVCodecParameters *par, AVIOContext *dyn_cp)
int32_t yaw
Rotation around the up vector [-180, 180].
static int get_aac_sample_rates(AVFormatContext *s, MatroskaMuxContext *mkv, const uint8_t *extradata, int extradata_size, int *sample_rate, int *output_sample_rate)
enum AVColorRange color_range
Video only.
static int mkv_check_new_extra_data(AVFormatContext *s, const AVPacket *pkt)
Opaque data information usually sparse.
#define MATROSKA_ID_VIDEOCOLORSPACE
#define MATROSKA_ID_CHAPTERS
#define MATROSKA_ID_AUDIOSAMPLINGFREQ
ff_const59 struct AVOutputFormat * oformat
The output container format.
void ffio_free_dyn_buf(AVIOContext **s)
Free a dynamic buffer.
uint32_t padding
Number of pixels to pad from the edge of each cube face.
int metadata_header_padding
Number of bytes to be written as padding in a metadata header.
#define IS_SEEKABLE(pb, mkv)
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
int64_t end
chapter start/end time in time_base units
Content light level (based on CTA-861.3).
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was...
enum AVStereo3DType type
How views are packed within the video.
Views are packed in a checkerboard-like structure per pixel.
#define MATROSKA_ID_VIDEOCOLORMATRIXCOEFF
char * av_strdup(const char *s)
Duplicate a string.
#define MATROSKA_ID_TRACKFLAGFORCED
Views are on top of each other.
#define MATROSKA_ID_VIDEOCOLORPRIMARIES
int64_t sample_rate_offset
#define MATROSKA_ID_VIDEOPROJECTIONPOSEPITCH
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
#define MATROSKA_ID_SEEKID
AVIOContext * pb
I/O context.
static void put_ebml_uint(AVIOContext *pb, uint32_t elementid, uint64_t val)
void avio_w8(AVIOContext *s, int b)
#define MATROSKA_ID_BLOCK
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
#define MATROSKA_ID_TAGTARGETS_TRACKUID
#define MATROSKA_ID_TAGLANG
static unsigned int av_lfg_get(AVLFG *c)
Get the next random unsigned 32-bit number using an ALFG.
#define MATROSKA_ID_TRACKS
Data found in BlockAdditional element of matroska container.
#define MATROSKA_ID_TRACKNAME
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
static void mkv_write_video_color(AVIOContext *pb, const AVStream *st, const AVCodecParameters *par)
#define MATROSKA_ID_SEEKENTRY
static void put_ebml_uid(AVIOContext *pb, uint32_t elementid, uint64_t uid)
Write a (random) UID with fixed size to make the output more deterministic.
Describe the class of an AVClass context structure.
#define MATROSKA_ID_EDITIONENTRY
#define FF_COMPLIANCE_NORMAL
static int mkv_check_tag_name(const char *name, uint32_t elementid)
#define MATROSKA_ID_BLOCKGROUP
#define MATROSKA_ID_VIDEOPIXELHEIGHT
int32_t roll
Rotation around the forward vector [-180, 180].
static int mkv_write_tracks(AVFormatContext *s)
Rational number (pair of numerator and denominator).
#define MATROSKA_ID_CUEDURATION
#define MATROSKA_ID_CUETIME
Recommmends skipping the specified number of samples.
av_cold void av_lfg_init(AVLFG *c, unsigned int seed)
#define MATROSKA_ID_VIDEOCOLORTRANSFERCHARACTERISTICS
#define MATROSKA_ID_TITLE
#define MATROSKA_ID_TRACKVIDEO
static int mkv_strip_wavpack(const uint8_t *src, uint8_t **pdst, int *size)
This structure describes how to handle spherical videos, outlining information about projection...
int error
contains the error code or 0 if no error happened
#define MATROSKA_ID_VIDEOPROJECTION
#define MATROSKA_ID_VIDEOCOLORMASTERINGMETA
#define CONFIG_LIBOPUS_ENCODER
#define MATROSKA_ID_VIDEOPROJECTIONPRIVATE
This struct describes the properties of a single codec described by an AVCodecID. ...
#define MATROSKA_ID_ATTACHMENTS
void avio_wb16(AVIOContext *s, unsigned int val)
#define flags(name, subs,...)
#define MATROSKA_ID_CHAPTERDISPLAY
static int mkv_end_cluster(AVFormatContext *s)
int bits_per_raw_sample
This is the number of valid bits in each output sample.
#define MATROSKA_ID_FILENAME
int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt)
Return number of bytes per sample.
#define MATROSKA_ID_BLOCKADDITIONAL
uint32_t bound_top
Distance from the top edge.
const AVMetadataConv ff_mkv_metadata_conv[]
#define MATROSKA_ID_CODECID
static const AVCodecTag additional_video_tags[]
mkv_seekhead_entry entries[MAX_SEEKHEAD_ENTRIES]
#define MATROSKA_ID_VIDEOFIELDORDER
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
int sample_rate
Audio only.
int ff_flac_write_header(AVIOContext *pb, const uint8_t *extradata, int extradata_size, int last_block)
#define MATROSKA_ID_VIDEOALPHAMODE
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
static int mkv_write_trailer(AVFormatContext *s)
static int put_flac_codecpriv(AVFormatContext *s, AVIOContext *pb, const AVCodecParameters *par)
static int mkv_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
#define MATROSKA_ID_CUETRACK
static int put_wv_codecpriv(AVIOContext *pb, const AVCodecParameters *par)
#define MATROSKA_ID_SEEKPOSITION
#define MATROSKA_ID_CODECDELAY
#define FF_DISABLE_DEPRECATION_WARNINGS
#define MATROSKA_ID_CHAPTERTIMESTART
#define MATROSKA_ID_VIDEOCOLORRANGE
enum AVSphericalProjection projection
Projection type.
Utilties for rational number calculation.
int ffio_init_context(AVIOContext *s, unsigned char *buffer, int buffer_size, int write_flag, void *opaque, int(*read_packet)(void *opaque, uint8_t *buf, int buf_size), int(*write_packet)(void *opaque, uint8_t *buf, int buf_size), int64_t(*seek)(void *opaque, int64_t offset, int whence))
static int mkv_write_tag_targets(MatroskaMuxContext *mkv, AVIOContext **pb, ebml_master *tag, uint32_t elementid, uint64_t uid)
static int mkv_write_flush_packet(AVFormatContext *s, AVPacket *pkt)
int disposition
AV_DISPOSITION_* bit field.
static ebml_master start_ebml_master(AVIOContext *pb, uint32_t elementid, uint64_t expectedsize)
Views are packed per column.
AVRational time_base
time base in which the start/end timestamps are specified
const char * avcodec_get_name(enum AVCodecID id)
Get the name of a codec.
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
static int mkv_write_vtt_blocks(AVFormatContext *s, AVIOContext *pb, const AVPacket *pkt)
#define MATROSKA_ID_SEGMENT
#define MAX_PCE_SIZE
Maximum size of a PCE including the 3-bit ID_PCE.
static void mkv_write_video_projection(AVFormatContext *s, AVIOContext *pb, const AVStream *st)
The optional settings (rendering instructions) that immediately follow the timestamp specifier of a W...
#define MATROSKA_ID_SEEKHEAD
A point in the output bytestream where a decoder can start decoding (i.e.
#define FF_ENABLE_DEPRECATION_WARNINGS
#define MATROSKA_ID_POINTENTRY
static int mkv_write_stereo_mode(AVFormatContext *s, AVIOContext *pb, AVStream *st, int mode, int *h_width, int *h_height)
#define MATROSKA_ID_FILEUID
static void put_ebml_binary(AVIOContext *pb, uint32_t elementid, const void *buf, int size)
static void mkv_start_seekhead(MatroskaMuxContext *mkv, AVIOContext *pb)
Initialize the SeekHead element to be ready to index level 1 Matroska elements.
void * priv_data
Format private data.
#define MATROSKA_ID_CHAPTERUID
static int check_bitstream(AVFormatContext *s, AVStream *st, AVPacket *pkt)
static void write_header(FFV1Context *f)
uint32_t bound_left
Distance from the left edge.
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
static const char * get_mimetype(const AVStream *st)
int bits_per_coded_sample
The number of bits per sample in the codedwords.
int64_t relative_pos
relative offset from the position of the cluster containing the block
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
#define MATROSKA_ID_VIDEOCOLORMAXFALL
#define MATROSKA_ID_VIDEODISPLAYUNIT
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
static const AVOption options[]
#define EBML_ID_EBMLMAXSIZELENGTH
void avio_wb32(AVIOContext *s, unsigned int val)
enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
Get the type of the given codec.
int64_t duration
Duration of the stream, in AV_TIME_BASE fractional seconds.
#define MATROSKA_ID_CHAPSTRING
#define MATROSKA_ID_TAGSTRING
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key, ignoring the suffix of the found key string.
uint32_t av_get_random_seed(void)
Get a seed to use in conjunction with random functions.
static void put_ebml_string(AVIOContext *pb, uint32_t elementid, const char *str)
AVCodecParameters * codecpar
Codec parameters associated with this stream.
static void put_ebml_sint(AVIOContext *pb, uint32_t elementid, int64_t val)
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
#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 void mkv_deinit(AVFormatContext *s)
Free the members allocated in the mux context.
#define EBML_ID_DOCTYPEVERSION
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
static void end_ebml_master(AVIOContext *pb, ebml_master master)
const char *const * mime_types
MIME type(s) associated with the codec.
#define CONFIG_LIBX264_ENCODER
AVRational r_frame_rate
Real base framerate of the stream.
#define MATROSKA_ID_ATTACHEDFILE
#define MATROSKA_ID_VIDEOCOLOR_GY
static int mkv_write_block(AVFormatContext *s, AVIOContext *pb, uint32_t blockid, const AVPacket *pkt, int keyframe)
static double val(void *priv, double ch)
unsigned MaxFALL
Max average light level per frame (cd/m^2).
This structure stores compressed data.
static void mkv_write_field_order(AVIOContext *pb, int mode, enum AVFieldOrder field_order)
mode
Use these values in ebur128_init (or'ed).
#define MATROSKA_ID_VIDEOCOLOR_RY
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
static int mkv_blockgroup_size(int pkt_size, int track_num_size)
static int mkv_assemble_cues(AVStream **streams, AVIOContext *dyn_cp, mkv_cues *cues, mkv_track *tracks, int num_tracks)
int ff_isom_write_avcc(AVIOContext *pb, const uint8_t *data, int len)
#define MATROSKA_ID_TRACKAUDIO
#define AV_NOPTS_VALUE
Undefined timestamp value.
int(* filler)(InterplayACMContext *s, unsigned ind, unsigned col)
const CodecTags ff_mkv_codec_tags[]
int avio_printf(AVIOContext *s, const char *fmt,...) av_printf_format(2
Writes a formatted string to the context.
static int ebml_id_size(uint32_t id)
#define MATROSKA_ID_DISCARDPADDING
#define FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX
Tell ff_put_wav_header() to use WAVEFORMATEX even for PCM codecs.
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
int avio_get_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.