#include <stdint.h>
#include "avc.h"
#include "hevc.h"
#include "avformat.h"
#include "avio_internal.h"
#include "avlanguage.h"
#include "flacenc.h"
#include "internal.h"
#include "isom.h"
#include "matroska.h"
#include "riff.h"
#include "subtitles.h"
#include "vorbiscomment.h"
#include "wv.h"
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/dict.h"
#include "libavutil/intfloat.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/lfg.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "libavutil/random_seed.h"
#include "libavutil/samplefmt.h"
#include "libavutil/sha.h"
#include "libavutil/stereo3d.h"
#include "libavcodec/xiph.h"
#include "libavcodec/mpeg4audio.h"
#include "libavcodec/internal.h"

Data Structures
struct	ebml_master

struct	mkv_seekhead_entry

struct	mkv_seekhead

struct	mkv_cuepoint

struct	mkv_cues

struct	mkv_track

struct	MatroskaMuxContext

Macros
#define	MODE_MATROSKAv2 0x01

#define	MODE_WEBM 0x02

#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

#define	MAX_CUETRACKPOS_SIZE 42
	per-cuepoint-track - 5 1-byte EBML IDs, 5 1-byte EBML sizes, 4 8-byte uint max

#define	MAX_CUEPOINT_SIZE(num_tracks) 12 + MAX_CUETRACKPOS_SIZE * num_tracks
	per-cuepoint - 2 1-byte EBML IDs, 2 1-byte EBML sizes, 8-byte uint max

#define	OPUS_SEEK_PREROLL 80000000
	Seek preroll value for opus.

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

#define	FLAGS AV_OPT_FLAG_ENCODING_PARAM

Functions
static int	ebml_id_size (unsigned int id)

static void	put_ebml_id (AVIOContext *pb, unsigned int id)

static void	put_ebml_size_unknown (AVIOContext *pb, int bytes)
	Write an EBML size meaning "unknown size".

static int	ebml_num_size (uint64_t num)
	Calculate how many bytes are needed to represent a given number in EBML.

static void	put_ebml_num (AVIOContext *pb, uint64_t num, int bytes)
	Write a number in EBML variable length format.

static void	put_ebml_uint (AVIOContext *pb, unsigned int elementid, uint64_t val)

static void	put_ebml_sint (AVIOContext *pb, unsigned int elementid, int64_t val)

static void	put_ebml_float (AVIOContext *pb, unsigned int elementid, double val)

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

static void	put_ebml_string (AVIOContext pb, unsigned int elementid, const char str)

static void	put_ebml_void (AVIOContext *pb, uint64_t size)
	Write a void element of a given size.

static ebml_master	start_ebml_master (AVIOContext *pb, unsigned int elementid, uint64_t expectedsize)

static void	end_ebml_master (AVIOContext *pb, ebml_master master)

static void	put_xiph_size (AVIOContext *pb, int size)

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.

static int	mkv_add_seekhead_entry (mkv_seekhead *seekhead, unsigned int elementid, uint64_t filepos)

static int64_t	mkv_write_seekhead (AVIOContext pb, mkv_seekhead seekhead)
	Write the seek head to the file and free it.

static mkv_cues *	mkv_start_cues (int64_t segment_offset)

static int	mkv_add_cuepoint (mkv_cues *cues, int stream, int tracknum, int64_t ts, int64_t cluster_pos, int64_t relative_pos, int64_t duration)

static int64_t	mkv_write_cues (AVFormatContext s, mkv_cues cues, mkv_track *tracks, int num_tracks)

static int	put_xiph_codecpriv (AVFormatContext s, AVIOContext pb, AVCodecContext *codec)

static int	put_wv_codecpriv (AVIOContext pb, AVCodecContext codec)

static int	put_flac_codecpriv (AVFormatContext s, AVIOContext pb, AVCodecContext *codec)

static void	get_aac_sample_rates (AVFormatContext s, AVCodecContext codec, int sample_rate, int output_sample_rate)

static int	mkv_write_native_codecprivate (AVFormatContext s, AVCodecContext codec, AVIOContext *dyn_cp)

static int	mkv_write_codecprivate (AVFormatContext s, AVIOContext pb, AVCodecContext *codec, int native_id, int qt_id)

static int	mkv_write_stereo_mode (AVFormatContext s, AVIOContext pb, AVStream *st, int mode)

static int	mkv_write_track (AVFormatContext s, MatroskaMuxContext mkv, int i, AVIOContext *pb, int default_stream_exists)

static int	mkv_write_tracks (AVFormatContext *s)

static int	mkv_write_chapters (AVFormatContext *s)

static void	mkv_write_simpletag (AVIOContext pb, AVDictionaryEntry t)

static int	mkv_write_tag (AVFormatContext s, AVDictionary m, unsigned int elementid, unsigned int uid, ebml_master *tags)

static int	mkv_check_tag (AVDictionary *m)

static int	mkv_write_tags (AVFormatContext *s)

static int	mkv_write_attachments (AVFormatContext *s)

static int	mkv_write_header (AVFormatContext *s)

static int	mkv_blockgroup_size (int pkt_size)

static int	mkv_strip_wavpack (const uint8_t src, uint8_t pdst, int size)

static void	mkv_write_block (AVFormatContext s, AVIOContext pb, unsigned int blockid, AVPacket *pkt, int flags)

static int	srt_get_duration (uint8_t **buf)

static int	mkv_write_srt_blocks (AVFormatContext s, AVIOContext pb, AVPacket *pkt)

static int	mkv_write_vtt_blocks (AVFormatContext s, AVIOContext pb, AVPacket *pkt)

static void	mkv_flush_dynbuf (AVFormatContext *s)

static void	mkv_start_new_cluster (AVFormatContext s, AVPacket pkt)

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

static int	mkv_write_packet (AVFormatContext s, AVPacket pkt)

static int	mkv_write_flush_packet (AVFormatContext s, AVPacket pkt)

static int	mkv_write_trailer (AVFormatContext *s)

static int	mkv_query_codec (enum AVCodecID codec_id, int std_compliance)

Variables
static const AVCodecTag	additional_audio_tags []

static const AVCodecTag	additional_video_tags []

static const AVOption	options []

Macro Definition Documentation

#define MODE_MATROSKAv2 0x01

Definition at line 95 of file matroskaenc.c.

Referenced by mkv_write_header().

#define MODE_WEBM 0x02

Definition at line 96 of file matroskaenc.c.

Referenced by mkv_write_header(), mkv_write_stereo_mode(), mkv_write_track(), and mkv_write_trailer().

#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 131 of file matroskaenc.c.

Referenced by mkv_start_seekhead(), and mkv_write_seekhead().

#define MAX_CUETRACKPOS_SIZE 42

per-cuepoint-track - 5 1-byte EBML IDs, 5 1-byte EBML sizes, 4 8-byte uint max

Definition at line 135 of file matroskaenc.c.

Referenced by mkv_write_cues().

#define MAX_CUEPOINT_SIZE ( num_tracks ) 12 + MAX_CUETRACKPOS_SIZE * num_tracks

per-cuepoint - 2 1-byte EBML IDs, 2 1-byte EBML sizes, 8-byte uint max

Definition at line 138 of file matroskaenc.c.

Referenced by mkv_write_cues().

#define OPUS_SEEK_PREROLL 80000000

Seek preroll value for opus.

Definition at line 141 of file matroskaenc.c.

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

Definition at line 2012 of file matroskaenc.c.

#define FLAGS AV_OPT_FLAG_ENCODING_PARAM

Definition at line 2013 of file matroskaenc.c.

Function Documentation

static int ebml_id_size ( unsigned int id )

static

Definition at line 143 of file matroskaenc.c.

Referenced by mkv_write_seekhead(), and put_ebml_id().

static void put_ebml_id	(	AVIOContext *	pb,
		unsigned int	id
	)

static

Definition at line 148 of file matroskaenc.c.

Referenced by mkv_write_block(), mkv_write_seekhead(), mkv_write_vtt_blocks(), put_ebml_binary(), put_ebml_float(), put_ebml_sint(), put_ebml_uint(), put_ebml_void(), and start_ebml_master().

static void put_ebml_size_unknown	(	AVIOContext *	pb,
		int	bytes
	)

static

Write an EBML size meaning "unknown size".

Parameters

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

Definition at line 160 of file matroskaenc.c.

Referenced by start_ebml_master().

static int ebml_num_size ( uint64_t num )

static

Calculate how many bytes are needed to represent a given number in EBML.

Definition at line 170 of file matroskaenc.c.

Referenced by mkv_blockgroup_size(), put_ebml_num(), and start_ebml_master().

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

static

Write a number in EBML variable length format.

Parameters

bytes The number of bytes that need to be used to write the number. If zero, any number of bytes can be used.

Definition at line 184 of file matroskaenc.c.

Referenced by end_ebml_master(), mkv_write_block(), mkv_write_seekhead(), mkv_write_vtt_blocks(), put_ebml_binary(), put_ebml_float(), put_ebml_sint(), put_ebml_uint(), and put_ebml_void().

static void put_ebml_uint	(	AVIOContext *	pb,
		unsigned int	elementid,
		uint64_t	val
	)

static

Definition at line 203 of file matroskaenc.c.

Referenced by mkv_write_attachments(), mkv_write_block(), mkv_write_chapters(), mkv_write_cues(), mkv_write_header(), mkv_write_packet_internal(), mkv_write_seekhead(), mkv_write_srt_blocks(), mkv_write_stereo_mode(), mkv_write_tag(), mkv_write_track(), and mkv_write_vtt_blocks().

static void put_ebml_sint	(	AVIOContext *	pb,
		unsigned int	elementid,
		int64_t	val
	)

static

Definition at line 216 of file matroskaenc.c.

Referenced by mkv_write_block().

static void put_ebml_float	(	AVIOContext *	pb,
		unsigned int	elementid,
		double	val
	)

static

Definition at line 229 of file matroskaenc.c.

Referenced by mkv_write_trailer().

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

static

Definition at line 236 of file matroskaenc.c.

Referenced by mkv_write_attachments(), mkv_write_codecprivate(), mkv_write_header(), and put_ebml_string().

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

static

Definition at line 244 of file matroskaenc.c.

Referenced by mkv_write_attachments(), mkv_write_chapters(), mkv_write_header(), mkv_write_simpletag(), and mkv_write_track().

static void put_ebml_void	(	AVIOContext *	pb,
		uint64_t	size
	)

static

Write a void element of a given size.

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

Parameters

size	The number of bytes to reserve, which must be at least 2.

Definition at line 256 of file matroskaenc.c.

Referenced by mkv_start_seekhead(), mkv_write_header(), mkv_write_seekhead(), and mkv_write_trailer().

static ebml_master start_ebml_master	(	AVIOContext *	pb,
		unsigned int	elementid,
		uint64_t	expectedsize
	)

static

Definition at line 273 of file matroskaenc.c.

Referenced by mkv_write_attachments(), mkv_write_block(), mkv_write_chapters(), mkv_write_cues(), mkv_write_header(), mkv_write_packet_internal(), mkv_write_seekhead(), mkv_write_simpletag(), mkv_write_srt_blocks(), mkv_write_tag(), mkv_write_track(), mkv_write_tracks(), and mkv_write_vtt_blocks().

static void end_ebml_master	(	AVIOContext *	pb,
		ebml_master	master
	)

static

Definition at line 282 of file matroskaenc.c.

Referenced by mkv_start_new_cluster(), mkv_write_attachments(), mkv_write_block(), mkv_write_chapters(), mkv_write_cues(), mkv_write_flush_packet(), mkv_write_header(), mkv_write_packet_internal(), mkv_write_seekhead(), mkv_write_simpletag(), mkv_write_srt_blocks(), mkv_write_tag(), mkv_write_tags(), mkv_write_tracks(), mkv_write_trailer(), and mkv_write_vtt_blocks().

static void put_xiph_size	(	AVIOContext *	pb,
		int	size
	)

static

Definition at line 292 of file matroskaenc.c.

Referenced by put_xiph_codecpriv().

static mkv_seekhead* mkv_start_seekhead	(	AVIOContext *	pb,
		int64_t	segment_offset,
		int	numelements
	)

static

Initialize a mkv_seekhead element to be ready to index level 1 Matroska elements.

If a maximum number of elements is specified, enough space will be reserved at the current file location to write a seek head of that size.

Parameters

segment_offset	The absolute offset to the position in the file where the segment begins.
numelements	The maximum number of elements that will be indexed by this seek head, 0 if unlimited.

Definition at line 309 of file matroskaenc.c.

Referenced by mkv_write_header().

static int mkv_add_seekhead_entry	(	mkv_seekhead *	seekhead,
		unsigned int	elementid,
		uint64_t	filepos
	)

static

Definition at line 330 of file matroskaenc.c.

Referenced by mkv_write_attachments(), mkv_write_chapters(), mkv_write_header(), mkv_write_tag(), mkv_write_tracks(), and mkv_write_trailer().

static int64_t mkv_write_seekhead	(	AVIOContext *	pb,
		mkv_seekhead *	seekhead
	)

static

Write the seek head to the file and free it.

If a maximum number of elements was specified to mkv_start_seekhead(), the seek head will be written at the location reserved for it. Otherwise, it is written at the current location in the file.

Returns: The file offset where the seekhead was written, -1 if an error occurred.

Definition at line 358 of file matroskaenc.c.

Referenced by mkv_write_header(), and mkv_write_trailer().

static mkv_cues* mkv_start_cues ( int64_t segment_offset )

static

Definition at line 402 of file matroskaenc.c.

Referenced by mkv_write_header().

static int mkv_add_cuepoint	(	mkv_cues *	cues,
		int	stream,
		int	tracknum,
		int64_t	ts,
		int64_t	cluster_pos,
		int64_t	relative_pos,
		int64_t	duration
	)

static

Definition at line 412 of file matroskaenc.c.

Referenced by mkv_write_packet_internal().

static int64_t mkv_write_cues	(	AVFormatContext *	s,
		mkv_cues *	cues,
		mkv_track *	tracks,
		int	num_tracks
	)

static

Definition at line 435 of file matroskaenc.c.

Referenced by mkv_write_trailer().

static int put_xiph_codecpriv	(	AVFormatContext *	s,
		AVIOContext *	pb,
		AVCodecContext *	codec
	)

static

Definition at line 492 of file matroskaenc.c.

Referenced by mkv_write_native_codecprivate().

static int put_wv_codecpriv	(	AVIOContext *	pb,
		AVCodecContext *	codec
	)

static

Definition at line 520 of file matroskaenc.c.

Referenced by mkv_write_native_codecprivate().

static int put_flac_codecpriv	(	AVFormatContext *	s,
		AVIOContext *	pb,
		AVCodecContext *	codec
	)

static

Definition at line 529 of file matroskaenc.c.

Referenced by mkv_write_native_codecprivate().

static void get_aac_sample_rates	(	AVFormatContext *	s,
		AVCodecContext *	codec,
		int *	sample_rate,
		int *	output_sample_rate
	)

static

Definition at line 573 of file matroskaenc.c.

Referenced by mkv_write_track().

static int mkv_write_native_codecprivate	(	AVFormatContext *	s,
		AVCodecContext *	codec,
		AVIOContext *	dyn_cp
	)

static

Definition at line 589 of file matroskaenc.c.

Referenced by mkv_write_codecprivate().

static int mkv_write_codecprivate	(	AVFormatContext *	s,
		AVIOContext *	pb,
		AVCodecContext *	codec,
		int	native_id,
		int	qt_id
	)

static

Definition at line 628 of file matroskaenc.c.

static int mkv_write_stereo_mode	(	AVFormatContext *	s,
		AVIOContext *	pb,
		AVStream *	st,
		int	mode
	)

static

Definition at line 698 of file matroskaenc.c.

static int mkv_write_track	(	AVFormatContext *	s,
		MatroskaMuxContext *	mkv,
		int	i,
		AVIOContext *	pb,
		int	default_stream_exists
	)

static

Definition at line 789 of file matroskaenc.c.

Referenced by mkv_write_tracks().

static int mkv_write_tracks ( AVFormatContext * s )

static

Definition at line 1014 of file matroskaenc.c.

Referenced by mkv_write_header().

static int mkv_write_chapters ( AVFormatContext * s )

static

Definition at line 1039 of file matroskaenc.c.

Referenced by mkv_write_header(), and mkv_write_trailer().

static void mkv_write_simpletag	(	AVIOContext *	pb,
		AVDictionaryEntry *	t
	)

static

Definition at line 1085 of file matroskaenc.c.

Referenced by mkv_write_tag().

static int mkv_write_tag	(	AVFormatContext *	s,
		AVDictionary *	m,
		unsigned int	elementid,
		unsigned int	uid,
		ebml_master *	tags
	)

static

Definition at line 1115 of file matroskaenc.c.

Referenced by mkv_write_tags().

static int mkv_check_tag ( AVDictionary * m )

static

Definition at line 1146 of file matroskaenc.c.

Referenced by mkv_write_tags().

static int mkv_write_tags ( AVFormatContext * s )

static

Definition at line 1157 of file matroskaenc.c.

Referenced by mkv_write_header().

static int mkv_write_attachments ( AVFormatContext * s )

static

Definition at line 1195 of file matroskaenc.c.

Referenced by mkv_write_header().

static int mkv_write_header ( AVFormatContext * s )

static

Definition at line 1274 of file matroskaenc.c.

static int mkv_blockgroup_size ( int pkt_size )

static

Definition at line 1437 of file matroskaenc.c.

Referenced by mkv_write_packet_internal(), mkv_write_srt_blocks(), and mkv_write_vtt_blocks().

static int mkv_strip_wavpack	(	const uint8_t *	src,
		uint8_t **	pdst,
		int *	size
	)

static

Definition at line 1448 of file matroskaenc.c.

Referenced by mkv_write_block().

static void mkv_write_block	(	AVFormatContext *	s,
		AVIOContext *	pb,
		unsigned int	blockid,
		AVPacket *	pkt,
		int	flags
	)

static

Definition at line 1501 of file matroskaenc.c.

Referenced by mkv_write_packet_internal(), and mkv_write_srt_blocks().

static int srt_get_duration ( uint8_t ** buf )

static

Definition at line 1592 of file matroskaenc.c.

Referenced by mkv_write_srt_blocks().

static int mkv_write_srt_blocks	(	AVFormatContext *	s,
		AVIOContext *	pb,
		AVPacket *	pkt
	)

static

Definition at line 1616 of file matroskaenc.c.

Referenced by mkv_write_packet_internal().

static int mkv_write_vtt_blocks	(	AVFormatContext *	s,
		AVIOContext *	pb,
		AVPacket *	pkt
	)

static

Definition at line 1633 of file matroskaenc.c.

Referenced by mkv_write_packet_internal().

static void mkv_flush_dynbuf ( AVFormatContext * s )

static

Definition at line 1671 of file matroskaenc.c.

Referenced by mkv_start_new_cluster(), mkv_write_flush_packet(), and mkv_write_trailer().

static void mkv_start_new_cluster	(	AVFormatContext *	s,
		AVPacket *	pkt
	)

static

Definition at line 1686 of file matroskaenc.c.

Referenced by mkv_write_packet(), and mkv_write_packet_internal().

static int mkv_write_packet_internal	(	AVFormatContext *	s,
		AVPacket *	pkt,
		int	add_cue
	)

static

Definition at line 1708 of file matroskaenc.c.

Referenced by mkv_write_packet(), and mkv_write_trailer().

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

static

Definition at line 1786 of file matroskaenc.c.

Referenced by mkv_write_flush_packet().

static int mkv_write_flush_packet	(	AVFormatContext *	s,
		AVPacket *	pkt
	)

static

Definition at line 1863 of file matroskaenc.c.

static int mkv_write_trailer ( AVFormatContext * s )

static

Definition at line 1887 of file matroskaenc.c.

static int mkv_query_codec	(	enum AVCodecID	codec_id,
		int	std_compliance
	)

static

Definition at line 1970 of file matroskaenc.c.

Variable Documentation

const AVCodecTag additional_audio_tags[]

static

Initial value:

= {
    { AV_CODEC_ID_ALAC,      0XFFFFFFFF },
    { AV_CODEC_ID_EAC3,      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_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 1987 of file matroskaenc.c.

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_RV40,      0xFFFFFFFF },
    { AV_CODEC_ID_VP9,       0xFFFFFFFF },
    { AV_CODEC_ID_NONE,      0xFFFFFFFF }
}

Definition at line 2003 of file matroskaenc.c.

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 },
    { "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_INT, { .i64 = 0 }, 0, 1, FLAGS },
    { "dash_track_number", "Track number for the DASH stream", OFFSET(dash_track_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 127, FLAGS },
    { NULL },
}

Definition at line 2014 of file matroskaenc.c.

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

Function Documentation

Variable Documentation