FFmpeg
Data Structures | Macros | Enumerations | Functions | Variables
matroskaenc.c File Reference
#include <stdint.h>
#include "config_components.h"
#include "av1.h"
#include "avc.h"
#include "hevc.h"
#include "avformat.h"
#include "avio_internal.h"
#include "avlanguage.h"
#include "dovi_isom.h"
#include "flacenc.h"
#include "internal.h"
#include "isom.h"
#include "matroska.h"
#include "mux.h"
#include "riff.h"
#include "version.h"
#include "vorbiscomment.h"
#include "wv.h"
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/crc.h"
#include "libavutil/dict.h"
#include "libavutil/intfloat.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/lfg.h"
#include "libavutil/mastering_display_metadata.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/random_seed.h"
#include "libavutil/rational.h"
#include "libavutil/samplefmt.h"
#include "libavutil/stereo3d.h"
#include "libavcodec/xiph.h"
#include "libavcodec/mpeg4audio.h"

Go to the source code of this file.

Data Structures

struct  ebml_master
 
struct  ebml_stored_master
 
struct  BlockContext
 
struct  EbmlMaster
 
struct  EbmlElement
 
struct  EbmlWriter
 
struct  mkv_seekhead_entry
 
struct  mkv_seekhead
 
struct  mkv_cuepoint
 
struct  mkv_cues
 
struct  mkv_track
 
struct  MatroskaMuxContext
 

Macros

#define MAX_SEEKHEAD_ENTRIES   7
 
#define MAX_EBML_LENGTH   ((1ULL << 56) - 2)
 
#define MAX_SUPPORTED_EBML_LENGTH   FFMIN(MAX_EBML_LENGTH, INT_MAX)
 
#define MODE_MATROSKAv2   0x01
 
#define MODE_WEBM   0x02
 
#define IS_WEBM(mkv)
 
#define IS_SEEKABLE(pb, mkv)
 
#define EBML_WRITER(max_nb_elems)
 
#define MAX_SEEKENTRY_SIZE   21
 2 bytes * 3 for EBML IDs, 3 1-byte EBML lengths, 8 bytes for 64 bit offset, 4 bytes for target EBML ID More...
 
#define MAX_CUETRACKPOS_SIZE   40
 4 * (1-byte EBML ID, 1-byte EBML size, 8-byte uint max) More...
 
#define OPUS_SEEK_PREROLL   80000000
 Seek preroll value for opus. More...
 
#define MAX_VIDEO_COLOR_ELEMS   20
 
#define MAX_VIDEO_PROJECTION_ELEMS   6
 
#define MAX_FIELD_ORDER_ELEMS   2
 
#define MAX_STEREO_MODE_ELEMS   1
 
#define CASE(type, variable)
 
#define OFFSET(x)   offsetof(MatroskaMuxContext, x)
 
#define FLAGS   AV_OPT_FLAG_ENCODING_PARAM
 

Enumerations

enum  { DEFAULT_MODE_INFER, DEFAULT_MODE_INFER_NO_SUBS, DEFAULT_MODE_PASSTHROUGH }
 
enum  EbmlType {
  EBML_NONE, EBML_UINT, EBML_SINT, EBML_FLOAT,
  EBML_STR, EBML_UTF8, EBML_BIN, EBML_NEST,
  EBML_LEVEL1, EBML_STOP, EBML_TYPE_COUNT, EBML_UINT,
  EBML_SINT, EBML_FLOAT, EBML_UID, EBML_STR,
  EBML_UTF8 = EBML_STR, EBML_BIN, EBML_BLOCK, EBML_MASTER
}
 

Functions

static int ebml_id_size (uint32_t id)
 
static void put_ebml_id (AVIOContext *pb, uint32_t id)
 
static void put_ebml_size_unknown (AVIOContext *pb, int bytes)
 Write an EBML size meaning "unknown size". More...
 
static int ebml_num_size (uint64_t num)
 Returns how many bytes are needed to represent a number as EBML variable length integer. More...
 
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 has a given length. More...
 
static void put_ebml_num (AVIOContext *pb, uint64_t num, int bytes)
 Write a number as EBML variable length integer on bytes bytes. More...
 
static void put_ebml_length (AVIOContext *pb, uint64_t length, int bytes)
 Write a length as EBML variable length integer. More...
 
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. More...
 
static void put_ebml_uint (AVIOContext *pb, uint32_t elementid, uint64_t val)
 
static void put_ebml_float (AVIOContext *pb, uint32_t elementid, double val)
 
static void put_ebml_binary (AVIOContext *pb, uint32_t elementid, const void *buf, int size)
 
static void put_ebml_string (AVIOContext *pb, uint32_t elementid, const char *str)
 
static void put_ebml_void (AVIOContext *pb, int size)
 Write a void element of a given size. More...
 
static ebml_master start_ebml_master (AVIOContext *pb, uint32_t elementid, uint64_t expectedsize)
 
static void end_ebml_master (AVIOContext *pb, ebml_master master)
 
static EbmlElementebml_writer_add (EbmlWriter *writer, uint32_t id, EbmlType type)
 
static void ebml_writer_open_master (EbmlWriter *writer, uint32_t id)
 
static void ebml_writer_close_master (EbmlWriter *writer)
 
static void ebml_writer_close_or_discard_master (EbmlWriter *writer)
 
static void ebml_writer_add_string (EbmlWriter *writer, uint32_t id, const char *str)
 
static void ebml_writer_add_bin (EbmlWriter *writer, uint32_t id, const uint8_t *data, size_t size)
 
static void ebml_writer_add_float (EbmlWriter *writer, uint32_t id, double val)
 
static void ebml_writer_add_uid (EbmlWriter *writer, uint32_t id, uint64_t val)
 
static void ebml_writer_add_uint (EbmlWriter *writer, uint32_t id, uint64_t val)
 
static void ebml_writer_add_sint (EbmlWriter *writer, uint32_t id, int64_t val)
 
static void ebml_writer_add_block (EbmlWriter *writer, MatroskaMuxContext *mkv)
 
static int ebml_writer_str_len (EbmlElement *elem)
 
static av_const int uint_size (uint64_t val)
 
static int ebml_writer_uint_len (EbmlElement *elem)
 
static av_const int sint_size (int64_t val)
 
static int ebml_writer_sint_len (EbmlElement *elem)
 
static int ebml_writer_elem_len (EbmlWriter *writer, EbmlElement *elem, int remaining_elems)
 
static int ebml_writer_master_len (EbmlWriter *writer, EbmlElement *elem, int remaining_elems)
 
static int ebml_writer_block_len (EbmlElement *elem)
 
static void ebml_writer_write_block (const EbmlElement *elem, AVIOContext *pb)
 
static int ebml_writer_elem_write (const EbmlElement *elem, AVIOContext *pb)
 
static int ebml_writer_write (EbmlWriter *writer, AVIOContext *pb)
 
static void mkv_add_seekhead_entry (MatroskaMuxContext *mkv, uint32_t elementid, uint64_t filepos)
 
static int start_ebml_master_crc32 (AVIOContext **dyn_cp, MatroskaMuxContext *mkv)
 
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 end_ebml_master_crc32_tentatively (AVIOContext *pb, ebml_stored_master *elem, MatroskaMuxContext *mkv, uint32_t id)
 Output EBML master. More...
 
static void put_xiph_size (AVIOContext *pb, int size)
 
static void mkv_deinit (AVFormatContext *s)
 Free the members allocated in the mux context. More...
 
static void mkv_start_seekhead (MatroskaMuxContext *mkv, AVIOContext *pb)
 Initialize the SeekHead element to be ready to index level 1 Matroska elements. More...
 
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. More...
 
static int mkv_add_cuepoint (MatroskaMuxContext *mkv, int stream, int64_t ts, int64_t cluster_pos, int64_t relative_pos, int64_t duration)
 
static int mkv_assemble_cues (AVStream **streams, AVIOContext *dyn_cp, const mkv_cues *cues, mkv_track *tracks, int num_tracks, uint64_t offset)
 
static int put_xiph_codecpriv (AVFormatContext *s, AVIOContext *pb, const AVCodecParameters *par)
 
static int mkv_write_native_codecprivate (AVFormatContext *s, AVIOContext *pb, const AVCodecParameters *par, AVIOContext *dyn_cp)
 
static int mkv_write_codecprivate (AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int native_id, int qt_id)
 
static void mkv_write_video_color (EbmlWriter *writer, const AVStream *st, const AVCodecParameters *par)
 
static void mkv_write_video_projection (AVFormatContext *s, EbmlWriter *writer, const AVStream *st, uint8_t private[])
 
static void mkv_write_field_order (EbmlWriter *writer, int is_webm, enum AVFieldOrder field_order)
 
static int mkv_write_stereo_mode (AVFormatContext *s, EbmlWriter *writer, AVStream *st, int is_webm, int *h_width, int *h_height)
 
static void mkv_write_dovi (AVFormatContext *s, AVIOContext *pb, AVStream *st)
 
static int mkv_write_track_video (AVFormatContext *s, MatroskaMuxContext *mkv, AVStream *st, const AVCodecParameters *par, AVIOContext *pb)
 
static int mkv_write_track (AVFormatContext *s, MatroskaMuxContext *mkv, AVStream *st, mkv_track *track, AVIOContext *pb, int is_default)
 
static int mkv_write_tracks (AVFormatContext *s)
 
static int mkv_write_simpletag (AVIOContext *pb, const AVDictionaryEntry *t)
 
static int mkv_write_tag_targets (MatroskaMuxContext *mkv, AVIOContext **pb, ebml_master *tag, uint32_t elementid, uint64_t uid)
 
static int mkv_check_tag_name (const char *name, uint32_t elementid)
 
static int mkv_write_tag (MatroskaMuxContext *mkv, const AVDictionary *m, AVIOContext **pb, ebml_master *tag, uint32_t elementid, uint64_t uid)
 
static int mkv_check_tag (const AVDictionary *m, uint32_t elementid)
 
static int mkv_write_tags (AVFormatContext *s)
 
static int mkv_new_chapter_ids_needed (const AVFormatContext *s)
 
static int mkv_write_chapters (AVFormatContext *s)
 
static const char * get_mimetype (const AVStream *st)
 
static int mkv_write_attachments (AVFormatContext *s)
 
static int64_t get_metadata_duration (AVFormatContext *s)
 
static void ebml_write_header (AVIOContext *pb, const char *doctype, int version)
 
static int mkv_write_info (AVFormatContext *s)
 
static int mkv_write_header (AVFormatContext *s)
 
static int mkv_reformat_av1 (MatroskaMuxContext *mkv, AVIOContext *pb, const AVPacket *pkt, int *size)
 
static int webm_reformat_vtt (MatroskaMuxContext *mkv, AVIOContext *pb, const AVPacket *pkt, int *size)
 
static int mkv_write_block (void *logctx, MatroskaMuxContext *mkv, AVIOContext *pb, const AVCodecParameters *par, mkv_track *track, const AVPacket *pkt, int keyframe, int64_t ts, uint64_t duration, int force_blockgroup, int64_t relative_packet_pos)
 
static int mkv_end_cluster (AVFormatContext *s)
 
static int mkv_check_new_extra_data (AVFormatContext *s, const AVPacket *pkt)
 
static int mkv_write_packet_internal (AVFormatContext *s, const AVPacket *pkt)
 
static int mkv_write_packet (AVFormatContext *s, const AVPacket *pkt)
 
static int mkv_write_flush_packet (AVFormatContext *s, AVPacket *pkt)
 
static int mkv_write_trailer (AVFormatContext *s)
 
static uint64_t mkv_get_uid (const mkv_track *tracks, int i, AVLFG *c)
 
static int mkv_init (struct AVFormatContext *s)
 
static int mkv_check_bitstream (AVFormatContext *s, AVStream *st, const AVPacket *pkt)
 

Variables

static const AVCodecTag additional_audio_tags []
 
static const AVCodecTag additional_video_tags []
 
static const AVCodecTag additional_subtitle_tags []
 
static const AVOption options []
 
static const AVClass matroska_webm_class
 

Macro Definition Documentation

◆ MAX_SEEKHEAD_ENTRIES

#define MAX_SEEKHEAD_ENTRIES   7

Definition at line 64 of file matroskaenc.c.

◆ MAX_EBML_LENGTH

#define MAX_EBML_LENGTH   ((1ULL << 56) - 2)

Definition at line 67 of file matroskaenc.c.

◆ MAX_SUPPORTED_EBML_LENGTH

#define MAX_SUPPORTED_EBML_LENGTH   FFMIN(MAX_EBML_LENGTH, INT_MAX)

Definition at line 70 of file matroskaenc.c.

◆ MODE_MATROSKAv2

#define MODE_MATROSKAv2   0x01

Definition at line 72 of file matroskaenc.c.

◆ MODE_WEBM

#define MODE_WEBM   0x02

Definition at line 73 of file matroskaenc.c.

◆ IS_WEBM

#define IS_WEBM (   mkv)
Value:
(CONFIG_WEBM_MUXER && CONFIG_MATROSKA_MUXER ? \
((mkv)->mode == MODE_WEBM) : CONFIG_WEBM_MUXER)

Definition at line 75 of file matroskaenc.c.

◆ IS_SEEKABLE

#define IS_SEEKABLE (   pb,
  mkv 
)
Value:
(((pb)->seekable & AVIO_SEEKABLE_NORMAL) && \
!(mkv)->is_live)

Definition at line 77 of file matroskaenc.c.

◆ EBML_WRITER

#define EBML_WRITER (   max_nb_elems)
Value:
EbmlElement elements[max_nb_elems]; \
EbmlWriter writer = (EbmlWriter){ .elements = elements, \
.current_master_element = -1 }

Definition at line 143 of file matroskaenc.c.

◆ MAX_SEEKENTRY_SIZE

#define MAX_SEEKENTRY_SIZE   21

2 bytes * 3 for EBML IDs, 3 1-byte EBML lengths, 8 bytes for 64 bit offset, 4 bytes for target EBML ID

Definition at line 245 of file matroskaenc.c.

◆ MAX_CUETRACKPOS_SIZE

#define MAX_CUETRACKPOS_SIZE   40

4 * (1-byte EBML ID, 1-byte EBML size, 8-byte uint max)

Definition at line 248 of file matroskaenc.c.

◆ OPUS_SEEK_PREROLL

#define OPUS_SEEK_PREROLL   80000000

Seek preroll value for opus.

Definition at line 251 of file matroskaenc.c.

◆ MAX_VIDEO_COLOR_ELEMS

#define MAX_VIDEO_COLOR_ELEMS   20

Definition at line 1205 of file matroskaenc.c.

◆ MAX_VIDEO_PROJECTION_ELEMS

#define MAX_VIDEO_PROJECTION_ELEMS   6

Definition at line 1288 of file matroskaenc.c.

◆ MAX_FIELD_ORDER_ELEMS

#define MAX_FIELD_ORDER_ELEMS   2

Definition at line 1354 of file matroskaenc.c.

◆ MAX_STEREO_MODE_ELEMS

#define MAX_STEREO_MODE_ELEMS   1

Definition at line 1394 of file matroskaenc.c.

◆ CASE

#define CASE (   type,
  variable 
)
Value:
case AVMEDIA_TYPE_ ## type: \
variable ## _idx = i; \
if (st->disposition & AV_DISPOSITION_DEFAULT) \
variable ## _default_idx = i; \
break;

◆ OFFSET

#define OFFSET (   x)    offsetof(MatroskaMuxContext, x)

Definition at line 3213 of file matroskaenc.c.

◆ FLAGS

#define FLAGS   AV_OPT_FLAG_ENCODING_PARAM

Definition at line 3214 of file matroskaenc.c.

Enumeration Type Documentation

◆ anonymous enum

anonymous enum
Enumerator
DEFAULT_MODE_INFER 
DEFAULT_MODE_INFER_NO_SUBS 
DEFAULT_MODE_PASSTHROUGH 

Definition at line 80 of file matroskaenc.c.

◆ EbmlType

enum EbmlType
Enumerator
EBML_NONE 
EBML_UINT 
EBML_SINT 
EBML_FLOAT 
EBML_STR 
EBML_UTF8 
EBML_BIN 
EBML_NEST 
EBML_LEVEL1 
EBML_STOP 
EBML_TYPE_COUNT 
EBML_UINT 
EBML_SINT 
EBML_FLOAT 
EBML_UID 
EBML_STR 
EBML_UTF8 
EBML_BIN 
EBML_BLOCK 

pseudo-type for writing (Simple)Blocks

EBML_MASTER 

Definition at line 96 of file matroskaenc.c.

Function Documentation

◆ ebml_id_size()

static int ebml_id_size ( uint32_t  id)
static

Definition at line 253 of file matroskaenc.c.

Referenced by ebml_writer_master_len(), mkv_write_seekhead(), and put_ebml_id().

◆ put_ebml_id()

static void put_ebml_id ( AVIOContext pb,
uint32_t  id 
)
static

◆ put_ebml_size_unknown()

static void put_ebml_size_unknown ( AVIOContext pb,
int  bytes 
)
static

Write an EBML size meaning "unknown size".

Parameters
bytesThe number of bytes the size should occupy (maximum: 8).

Definition at line 270 of file matroskaenc.c.

Referenced by mkv_write_header(), and start_ebml_master().

◆ ebml_num_size()

static int ebml_num_size ( uint64_t  num)
static

Returns how many bytes are needed to represent a number as EBML variable length integer.

Definition at line 283 of file matroskaenc.c.

Referenced by ebml_length_size(), and mkv_init().

◆ ebml_length_size()

static int ebml_length_size ( uint64_t  length)
static

Calculate how many bytes are needed to represent the length field of an EBML element whose payload has a given length.

Definition at line 296 of file matroskaenc.c.

Referenced by ebml_writer_elem_len(), mkv_write_trailer(), put_ebml_length(), and start_ebml_master().

◆ put_ebml_num()

static void put_ebml_num ( AVIOContext pb,
uint64_t  num,
int  bytes 
)
static

Write a number as EBML variable length integer on bytes bytes.

bytes is taken literally without checking.

Definition at line 305 of file matroskaenc.c.

Referenced by ebml_writer_elem_write(), ebml_writer_write_block(), and put_ebml_length().

◆ put_ebml_length()

static void put_ebml_length ( AVIOContext pb,
uint64_t  length,
int  bytes 
)
static

Write a length as EBML variable length integer.

Parameters
bytesThe number of bytes that need to be used to write the number. If zero, the minimal number of bytes will be used.

Definition at line 318 of file matroskaenc.c.

Referenced by end_ebml_master(), end_ebml_master_crc32(), end_ebml_master_crc32_tentatively(), mkv_write_seekhead(), mkv_write_trailer(), put_ebml_binary(), put_ebml_float(), put_ebml_uid(), put_ebml_uint(), and put_ebml_void().

◆ put_ebml_uid()

static void put_ebml_uid ( AVIOContext pb,
uint32_t  elementid,
uint64_t  uid 
)
static

Write a (random) UID with fixed size to make the output more deterministic.

Definition at line 336 of file matroskaenc.c.

Referenced by mkv_write_tag_targets(), and mkv_write_track().

◆ put_ebml_uint()

static void put_ebml_uint ( AVIOContext pb,
uint32_t  elementid,
uint64_t  val 
)
static

◆ put_ebml_float()

static void put_ebml_float ( AVIOContext pb,
uint32_t  elementid,
double  val 
)
static

◆ put_ebml_binary()

static void put_ebml_binary ( AVIOContext pb,
uint32_t  elementid,
const void *  buf,
int  size 
)
static

◆ put_ebml_string()

static void put_ebml_string ( AVIOContext pb,
uint32_t  elementid,
const char *  str 
)
static

Definition at line 371 of file matroskaenc.c.

Referenced by mkv_write_dovi(), mkv_write_info(), mkv_write_tags(), and mkv_write_track().

◆ put_ebml_void()

static void put_ebml_void ( AVIOContext pb,
int  size 
)
static

Write a void element of a given size.

Useful for reserving space in the file to be written to later.

Parameters
sizeThe number of bytes to reserve, which must be at least 2.

Definition at line 383 of file matroskaenc.c.

Referenced by mkv_check_new_extra_data(), mkv_start_seekhead(), mkv_write_header(), mkv_write_info(), mkv_write_native_codecprivate(), mkv_write_seekhead(), mkv_write_tags(), mkv_write_trailer(), and start_ebml_master_crc32().

◆ start_ebml_master()

static ebml_master start_ebml_master ( AVIOContext pb,
uint32_t  elementid,
uint64_t  expectedsize 
)
static

◆ end_ebml_master()

static void end_ebml_master ( AVIOContext pb,
ebml_master  master 
)
static

◆ ebml_writer_add()

static EbmlElement* ebml_writer_add ( EbmlWriter writer,
uint32_t  id,
EbmlType  type 
)
static

◆ ebml_writer_open_master()

static void ebml_writer_open_master ( EbmlWriter writer,
uint32_t  id 
)
static

◆ ebml_writer_close_master()

static void ebml_writer_close_master ( EbmlWriter writer)
static

◆ ebml_writer_close_or_discard_master()

static void ebml_writer_close_or_discard_master ( EbmlWriter writer)
static

Definition at line 451 of file matroskaenc.c.

Referenced by mkv_write_video_color().

◆ ebml_writer_add_string()

static void ebml_writer_add_string ( EbmlWriter writer,
uint32_t  id,
const char *  str 
)
static

◆ ebml_writer_add_bin()

static void ebml_writer_add_bin ( EbmlWriter writer,
uint32_t  id,
const uint8_t *  data,
size_t  size 
)
static

◆ ebml_writer_add_float()

static void ebml_writer_add_float ( EbmlWriter writer,
uint32_t  id,
double  val 
)
static

Definition at line 482 of file matroskaenc.c.

Referenced by mkv_write_video_color(), and mkv_write_video_projection().

◆ ebml_writer_add_uid()

static void ebml_writer_add_uid ( EbmlWriter writer,
uint32_t  id,
uint64_t  val 
)
static

Definition at line 490 of file matroskaenc.c.

Referenced by mkv_write_attachments().

◆ ebml_writer_add_uint()

static void ebml_writer_add_uint ( EbmlWriter writer,
uint32_t  id,
uint64_t  val 
)
static

◆ ebml_writer_add_sint()

static void ebml_writer_add_sint ( EbmlWriter writer,
uint32_t  id,
int64_t  val 
)
static

Definition at line 504 of file matroskaenc.c.

Referenced by mkv_write_block().

◆ ebml_writer_add_block()

static void ebml_writer_add_block ( EbmlWriter writer,
MatroskaMuxContext mkv 
)
static

Definition at line 511 of file matroskaenc.c.

Referenced by mkv_write_block().

◆ ebml_writer_str_len()

static int ebml_writer_str_len ( EbmlElement elem)
static

Definition at line 517 of file matroskaenc.c.

Referenced by ebml_writer_elem_len().

◆ uint_size()

static av_const int uint_size ( uint64_t  val)
static

Definition at line 527 of file matroskaenc.c.

Referenced by ebml_writer_uint_len(), and sint_size().

◆ ebml_writer_uint_len()

static int ebml_writer_uint_len ( EbmlElement elem)
static

Definition at line 536 of file matroskaenc.c.

Referenced by ebml_writer_elem_len().

◆ sint_size()

static av_const int sint_size ( int64_t  val)
static

Definition at line 542 of file matroskaenc.c.

Referenced by ebml_writer_sint_len().

◆ ebml_writer_sint_len()

static int ebml_writer_sint_len ( EbmlElement elem)
static

Definition at line 548 of file matroskaenc.c.

Referenced by ebml_writer_elem_len().

◆ ebml_writer_elem_len()

static int ebml_writer_elem_len ( EbmlWriter writer,
EbmlElement elem,
int  remaining_elems 
)
static

Definition at line 629 of file matroskaenc.c.

Referenced by ebml_writer_master_len(), and ebml_writer_write().

◆ ebml_writer_master_len()

static int ebml_writer_master_len ( EbmlWriter writer,
EbmlElement elem,
int  remaining_elems 
)
static

Definition at line 557 of file matroskaenc.c.

Referenced by ebml_writer_elem_len().

◆ ebml_writer_block_len()

static int ebml_writer_block_len ( EbmlElement elem)
static

Definition at line 583 of file matroskaenc.c.

Referenced by ebml_writer_elem_len().

◆ ebml_writer_write_block()

static void ebml_writer_write_block ( const EbmlElement elem,
AVIOContext pb 
)
static

Definition at line 608 of file matroskaenc.c.

Referenced by ebml_writer_elem_write().

◆ ebml_writer_elem_write()

static int ebml_writer_elem_write ( const EbmlElement elem,
AVIOContext pb 
)
static

Definition at line 663 of file matroskaenc.c.

Referenced by ebml_writer_write().

◆ ebml_writer_write()

static int ebml_writer_write ( EbmlWriter writer,
AVIOContext pb 
)
static

◆ mkv_add_seekhead_entry()

static void mkv_add_seekhead_entry ( MatroskaMuxContext mkv,
uint32_t  elementid,
uint64_t  filepos 
)
static

Definition at line 716 of file matroskaenc.c.

Referenced by end_ebml_master_crc32(), and end_ebml_master_crc32_tentatively().

◆ start_ebml_master_crc32()

static int start_ebml_master_crc32 ( AVIOContext **  dyn_cp,
MatroskaMuxContext mkv 
)
static

◆ end_ebml_master_crc32()

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

◆ end_ebml_master_crc32_tentatively()

static int end_ebml_master_crc32_tentatively ( AVIOContext pb,
ebml_stored_master elem,
MatroskaMuxContext mkv,
uint32_t  id 
)
static

Output EBML master.

Keep the buffer if seekable, allowing for later updates. Furthermore always add a SeekHead Entry for this element.

Definition at line 777 of file matroskaenc.c.

Referenced by mkv_write_info(), mkv_write_tags(), and mkv_write_tracks().

◆ put_xiph_size()

static void put_xiph_size ( AVIOContext pb,
int  size 
)
static

Definition at line 800 of file matroskaenc.c.

Referenced by put_xiph_codecpriv().

◆ mkv_deinit()

static void mkv_deinit ( AVFormatContext s)
static

Free the members allocated in the mux context.

Definition at line 809 of file matroskaenc.c.

◆ mkv_start_seekhead()

static void mkv_start_seekhead ( MatroskaMuxContext mkv,
AVIOContext pb 
)
static

Initialize the SeekHead element to be ready to index level 1 Matroska elements.

Enough space to write MAX_SEEKHEAD_ENTRIES SeekHead entries will be reserved at the current file location.

Definition at line 828 of file matroskaenc.c.

Referenced by mkv_write_header().

◆ mkv_write_seekhead()

static int mkv_write_seekhead ( AVIOContext pb,
MatroskaMuxContext mkv,
int  error_on_seek_failure,
int64_t  destpos 
)
static

Write the SeekHead to the file at the location reserved for it and seek to destpos afterwards.

When error_on_seek_failure is not set, failure to seek to the position designated for the SeekHead is not considered an error and it is presumed that destpos is the current position; failure to seek to destpos afterwards is always an error.

Returns
0 on success, < 0 on error.

Definition at line 848 of file matroskaenc.c.

Referenced by mkv_write_header(), and mkv_write_trailer().

◆ mkv_add_cuepoint()

static int mkv_add_cuepoint ( MatroskaMuxContext mkv,
int  stream,
int64_t  ts,
int64_t  cluster_pos,
int64_t  relative_pos,
int64_t  duration 
)
static

Definition at line 889 of file matroskaenc.c.

Referenced by mkv_write_packet_internal().

◆ mkv_assemble_cues()

static int mkv_assemble_cues ( AVStream **  streams,
AVIOContext dyn_cp,
const mkv_cues cues,
mkv_track tracks,
int  num_tracks,
uint64_t  offset 
)
static

Definition at line 921 of file matroskaenc.c.

Referenced by mkv_write_trailer().

◆ put_xiph_codecpriv()

static int put_xiph_codecpriv ( AVFormatContext s,
AVIOContext pb,
const AVCodecParameters par 
)
static

Definition at line 971 of file matroskaenc.c.

Referenced by mkv_write_native_codecprivate().

◆ mkv_write_native_codecprivate()

static int mkv_write_native_codecprivate ( AVFormatContext s,
AVIOContext pb,
const AVCodecParameters par,
AVIOContext dyn_cp 
)
static

Definition at line 1081 of file matroskaenc.c.

Referenced by mkv_write_codecprivate().

◆ mkv_write_codecprivate()

static int mkv_write_codecprivate ( AVFormatContext s,
AVIOContext pb,
AVCodecParameters par,
int  native_id,
int  qt_id 
)
static

Definition at line 1135 of file matroskaenc.c.

Referenced by mkv_check_new_extra_data(), and mkv_write_track().

◆ mkv_write_video_color()

static void mkv_write_video_color ( EbmlWriter writer,
const AVStream st,
const AVCodecParameters par 
)
static

Definition at line 1206 of file matroskaenc.c.

Referenced by mkv_write_track_video().

◆ mkv_write_video_projection()

static void mkv_write_video_projection ( AVFormatContext s,
EbmlWriter writer,
const AVStream st,
uint8_t  private[] 
)
static

Definition at line 1289 of file matroskaenc.c.

Referenced by mkv_write_track_video().

◆ mkv_write_field_order()

static void mkv_write_field_order ( EbmlWriter writer,
int  is_webm,
enum AVFieldOrder  field_order 
)
static

Definition at line 1355 of file matroskaenc.c.

Referenced by mkv_write_track_video().

◆ mkv_write_stereo_mode()

static int mkv_write_stereo_mode ( AVFormatContext s,
EbmlWriter writer,
AVStream st,
int  is_webm,
int h_width,
int h_height 
)
static

Definition at line 1395 of file matroskaenc.c.

Referenced by mkv_write_track_video().

◆ mkv_write_dovi()

static void mkv_write_dovi ( AVFormatContext s,
AVIOContext pb,
AVStream st 
)
static

Definition at line 1487 of file matroskaenc.c.

Referenced by mkv_write_track().

◆ mkv_write_track_video()

static int mkv_write_track_video ( AVFormatContext s,
MatroskaMuxContext mkv,
AVStream st,
const AVCodecParameters par,
AVIOContext pb 
)
static

Definition at line 1520 of file matroskaenc.c.

Referenced by mkv_write_track().

◆ mkv_write_track()

static int mkv_write_track ( AVFormatContext s,
MatroskaMuxContext mkv,
AVStream st,
mkv_track track,
AVIOContext pb,
int  is_default 
)
static

Definition at line 1600 of file matroskaenc.c.

Referenced by mkv_write_tracks().

◆ mkv_write_tracks()

static int mkv_write_tracks ( AVFormatContext s)
static

Definition at line 1825 of file matroskaenc.c.

Referenced by mkv_write_header().

◆ mkv_write_simpletag()

static int mkv_write_simpletag ( AVIOContext pb,
const AVDictionaryEntry t 
)
static

Definition at line 1879 of file matroskaenc.c.

Referenced by mkv_write_tag().

◆ mkv_write_tag_targets()

static int mkv_write_tag_targets ( MatroskaMuxContext mkv,
AVIOContext **  pb,
ebml_master tag,
uint32_t  elementid,
uint64_t  uid 
)
static

Definition at line 1914 of file matroskaenc.c.

Referenced by mkv_write_tag().

◆ mkv_check_tag_name()

static int mkv_check_tag_name ( const char *  name,
uint32_t  elementid 
)
static

Definition at line 1934 of file matroskaenc.c.

Referenced by mkv_check_tag(), and mkv_write_tag().

◆ mkv_write_tag()

static int mkv_write_tag ( MatroskaMuxContext mkv,
const AVDictionary m,
AVIOContext **  pb,
ebml_master tag,
uint32_t  elementid,
uint64_t  uid 
)
static

Definition at line 1948 of file matroskaenc.c.

Referenced by mkv_write_chapters(), and mkv_write_tags().

◆ mkv_check_tag()

static int mkv_check_tag ( const AVDictionary m,
uint32_t  elementid 
)
static

Definition at line 1974 of file matroskaenc.c.

Referenced by mkv_write_chapters(), and mkv_write_tags().

◆ mkv_write_tags()

static int mkv_write_tags ( AVFormatContext s)
static

Definition at line 1985 of file matroskaenc.c.

Referenced by mkv_write_header().

◆ mkv_new_chapter_ids_needed()

static int mkv_new_chapter_ids_needed ( const AVFormatContext s)
static

Definition at line 2058 of file matroskaenc.c.

Referenced by mkv_write_chapters().

◆ mkv_write_chapters()

static int mkv_write_chapters ( AVFormatContext s)
static

Definition at line 2070 of file matroskaenc.c.

Referenced by mkv_write_header(), and mkv_write_trailer().

◆ get_mimetype()

static const char* get_mimetype ( const AVStream st)
static

Definition at line 2153 of file matroskaenc.c.

Referenced by mkv_init(), and mkv_write_attachments().

◆ mkv_write_attachments()

static int mkv_write_attachments ( AVFormatContext s)
static

Definition at line 2170 of file matroskaenc.c.

Referenced by mkv_write_header().

◆ get_metadata_duration()

static int64_t get_metadata_duration ( AVFormatContext s)
static

Definition at line 2220 of file matroskaenc.c.

Referenced by mkv_write_info().

◆ ebml_write_header()

static void ebml_write_header ( AVIOContext pb,
const char *  doctype,
int  version 
)
static

Definition at line 2244 of file matroskaenc.c.

Referenced by mkv_write_header().

◆ mkv_write_info()

static int mkv_write_info ( AVFormatContext s)
static

Definition at line 2260 of file matroskaenc.c.

Referenced by mkv_write_header().

◆ mkv_write_header()

static int mkv_write_header ( AVFormatContext s)
static

Definition at line 2319 of file matroskaenc.c.

◆ mkv_reformat_av1()

static int mkv_reformat_av1 ( MatroskaMuxContext mkv,
AVIOContext pb,
const AVPacket pkt,
int size 
)
static

Definition at line 2471 of file matroskaenc.c.

Referenced by mkv_init().

◆ webm_reformat_vtt()

static int webm_reformat_vtt ( MatroskaMuxContext mkv,
AVIOContext pb,
const AVPacket pkt,
int size 
)
static

Definition at line 2481 of file matroskaenc.c.

Referenced by mkv_init().

◆ mkv_write_block()

static int mkv_write_block ( void *  logctx,
MatroskaMuxContext mkv,
AVIOContext pb,
const AVCodecParameters par,
mkv_track track,
const AVPacket pkt,
int  keyframe,
int64_t  ts,
uint64_t  duration,
int  force_blockgroup,
int64_t  relative_packet_pos 
)
static

Definition at line 2508 of file matroskaenc.c.

Referenced by mkv_write_packet_internal().

◆ mkv_end_cluster()

static int mkv_end_cluster ( AVFormatContext s)
static

◆ mkv_check_new_extra_data()

static int mkv_check_new_extra_data ( AVFormatContext s,
const AVPacket pkt 
)
static

Definition at line 2602 of file matroskaenc.c.

Referenced by mkv_write_packet().

◆ mkv_write_packet_internal()

static int mkv_write_packet_internal ( AVFormatContext s,
const AVPacket pkt 
)
static

Definition at line 2695 of file matroskaenc.c.

Referenced by mkv_write_packet(), and mkv_write_trailer().

◆ mkv_write_packet()

static int mkv_write_packet ( AVFormatContext s,
const AVPacket pkt 
)
static

Definition at line 2770 of file matroskaenc.c.

Referenced by mkv_write_flush_packet().

◆ mkv_write_flush_packet()

static int mkv_write_flush_packet ( AVFormatContext s,
AVPacket pkt 
)
static

Definition at line 2844 of file matroskaenc.c.

◆ mkv_write_trailer()

static int mkv_write_trailer ( AVFormatContext s)
static

Definition at line 2862 of file matroskaenc.c.

◆ mkv_get_uid()

static uint64_t mkv_get_uid ( const mkv_track tracks,
int  i,
AVLFG c 
)
static

Definition at line 3033 of file matroskaenc.c.

Referenced by mkv_init().

◆ mkv_init()

static int mkv_init ( struct AVFormatContext s)
static

Definition at line 3051 of file matroskaenc.c.

◆ mkv_check_bitstream()

static int mkv_check_bitstream ( AVFormatContext s,
AVStream st,
const AVPacket pkt 
)
static

Definition at line 3165 of file matroskaenc.c.

Variable Documentation

◆ additional_audio_tags

const AVCodecTag additional_audio_tags[]
static
Initial value:
= {
{ AV_CODEC_ID_ALAC, 0XFFFFFFFF },
{ AV_CODEC_ID_MLP, 0xFFFFFFFF },
{ AV_CODEC_ID_OPUS, 0xFFFFFFFF },
{ AV_CODEC_ID_PCM_S16BE, 0xFFFFFFFF },
{ AV_CODEC_ID_PCM_S24BE, 0xFFFFFFFF },
{ AV_CODEC_ID_PCM_S32BE, 0xFFFFFFFF },
{ AV_CODEC_ID_QDMC, 0xFFFFFFFF },
{ AV_CODEC_ID_QDM2, 0xFFFFFFFF },
{ AV_CODEC_ID_RA_144, 0xFFFFFFFF },
{ AV_CODEC_ID_RA_288, 0xFFFFFFFF },
{ AV_CODEC_ID_COOK, 0xFFFFFFFF },
{ AV_CODEC_ID_TRUEHD, 0xFFFFFFFF },
{ AV_CODEC_ID_NONE, 0xFFFFFFFF }
}

Definition at line 3183 of file matroskaenc.c.

◆ additional_video_tags

const AVCodecTag additional_video_tags[]
static
Initial value:
= {
{ AV_CODEC_ID_RV10, 0xFFFFFFFF },
{ AV_CODEC_ID_RV20, 0xFFFFFFFF },
{ AV_CODEC_ID_RV30, 0xFFFFFFFF },
{ AV_CODEC_ID_NONE, 0xFFFFFFFF }
}

Definition at line 3199 of file matroskaenc.c.

◆ additional_subtitle_tags

const AVCodecTag additional_subtitle_tags[]
static
Initial value:
= {
{ AV_CODEC_ID_DVB_SUBTITLE, 0xFFFFFFFF },
{ AV_CODEC_ID_DVD_SUBTITLE, 0xFFFFFFFF },
{ AV_CODEC_ID_NONE, 0xFFFFFFFF }
}

Definition at line 3206 of file matroskaenc.c.

◆ options

const AVOption options[]
static
Initial value:
= {
{ "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 },
{ "cues_to_front", "Move Cues (the index) to the front by shifting data if necessary", OFFSET(move_cues_to_front), AV_OPT_TYPE_BOOL, { .i64 = 0}, 0, 1, FLAGS },
{ "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 },
{ "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 },
{ "dash", "Create a WebM file conforming to WebM DASH specification", OFFSET(is_dash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
{ "dash_track_number", "Track number for the DASH stream", OFFSET(dash_track_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 1, INT_MAX, FLAGS },
{ "live", "Write files assuming it is a live stream.", OFFSET(is_live), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
{ "allow_raw_vfw", "allow RAW VFW mode", OFFSET(allow_raw_vfw), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
{ "flipped_raw_rgb", "Raw RGB bitmaps in VFW mode are stored bottom-up", OFFSET(flipped_raw_rgb), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
{ "write_crc32", "write a CRC32 element inside every Level 1 element", OFFSET(write_crc), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
{ "default_mode", "Controls how a track's FlagDefault is inferred", OFFSET(default_mode), AV_OPT_TYPE_INT, { .i64 = DEFAULT_MODE_PASSTHROUGH }, DEFAULT_MODE_INFER, DEFAULT_MODE_PASSTHROUGH, FLAGS, "default_mode" },
{ "infer", "For each track type, mark each 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" },
{ "infer_no_subs", "For each track type, mark each 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" },
{ "passthrough", "Use the disposition flag as-is", 0, AV_OPT_TYPE_CONST, { .i64 = DEFAULT_MODE_PASSTHROUGH }, 0, 0, FLAGS, "default_mode" },
{ NULL },
}

Definition at line 3215 of file matroskaenc.c.

◆ matroska_webm_class

const AVClass matroska_webm_class
static
Initial value:
= {
.class_name = "matroska/webm muxer",
.item_name = av_default_item_name,
.option = options,
}

Definition at line 3233 of file matroskaenc.c.

elements
static const ElemCat * elements[ELEMENT_COUNT]
Definition: signature.h:566
EbmlElement
Definition: matroskaenc.c:121
AV_DISPOSITION_DEFAULT
#define AV_DISPOSITION_DEFAULT
The stream should be chosen by default among other streams of the same type, unless the user has expl...
Definition: avformat.h:826
AV_CODEC_ID_RA_144
@ AV_CODEC_ID_RA_144
Definition: codec_id.h:412
AV_CODEC_ID_ALAC
@ AV_CODEC_ID_ALAC
Definition: codec_id.h:441
AV_CODEC_ID_HDMV_PGS_SUBTITLE
@ AV_CODEC_ID_HDMV_PGS_SUBTITLE
Definition: codec_id.h:531
AV_CODEC_ID_TRUEHD
@ AV_CODEC_ID_TRUEHD
Definition: codec_id.h:469
DEFAULT_MODE_PASSTHROUGH
@ DEFAULT_MODE_PASSTHROUGH
Definition: matroskaenc.c:83
AV_CODEC_ID_PCM_S16BE
@ AV_CODEC_ID_PCM_S16BE
Definition: codec_id.h:317
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
AV_CODEC_ID_DVB_SUBTITLE
@ AV_CODEC_ID_DVB_SUBTITLE
Definition: codec_id.h:526
options
static const AVOption options[]
Definition: matroskaenc.c:3215
AV_OPT_TYPE_INT64
@ AV_OPT_TYPE_INT64
Definition: opt.h:226
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
EbmlWriter
Definition: matroskaenc.c:137
NULL
#define NULL
Definition: coverity.c:32
DEFAULT_MODE_INFER_NO_SUBS
@ DEFAULT_MODE_INFER_NO_SUBS
Definition: matroskaenc.c:82
AV_CODEC_ID_DVD_SUBTITLE
@ AV_CODEC_ID_DVD_SUBTITLE
Definition: codec_id.h:525
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:237
AV_CODEC_ID_QDM2
@ AV_CODEC_ID_QDM2
Definition: codec_id.h:444
AV_CODEC_ID_QDMC
@ AV_CODEC_ID_QDMC
Definition: codec_id.h:475
AV_CODEC_ID_OPUS
@ AV_CODEC_ID_OPUS
Definition: codec_id.h:485
AV_CODEC_ID_RV30
@ AV_CODEC_ID_RV30
Definition: codec_id.h:118
AV_CODEC_ID_RA_288
@ AV_CODEC_ID_RA_288
Definition: codec_id.h:413
AV_CODEC_ID_RV10
@ AV_CODEC_ID_RV10
Definition: codec_id.h:55
AV_CODEC_ID_NONE
@ AV_CODEC_ID_NONE
Definition: codec_id.h:48
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
AV_CODEC_ID_RV20
@ AV_CODEC_ID_RV20
Definition: codec_id.h:56
AV_CODEC_ID_PCM_S32BE
@ AV_CODEC_ID_PCM_S32BE
Definition: codec_id.h:325
OFFSET
#define OFFSET(x)
Definition: matroskaenc.c:3213
FLAGS
#define FLAGS
Definition: matroskaenc.c:3214
AVIO_SEEKABLE_NORMAL
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:41
mode
mode
Definition: ebur128.h:83
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
DEFAULT_MODE_INFER
@ DEFAULT_MODE_INFER
Definition: matroskaenc.c:81
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:244
AV_CODEC_ID_COOK
@ AV_CODEC_ID_COOK
Definition: codec_id.h:445
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
AV_CODEC_ID_PCM_S24BE
@ AV_CODEC_ID_PCM_S24BE
Definition: codec_id.h:329
MODE_WEBM
#define MODE_WEBM
Definition: matroskaenc.c:73
AV_CODEC_ID_MLP
@ AV_CODEC_ID_MLP
Definition: codec_id.h:454