Граф связей класса Core functions:

Функции
unsigned	avformat_version (void)

const char *	avformat_configuration (void)

const char *	avformat_license (void)

attribute_deprecated void	av_register_all (void)

attribute_deprecated void	av_register_input_format (AVInputFormat *format)

attribute_deprecated void	av_register_output_format (AVOutputFormat *format)

int	avformat_network_init (void)

int	avformat_network_deinit (void)

attribute_deprecated AVInputFormat *	av_iformat_next (const AVInputFormat *f)

attribute_deprecated AVOutputFormat *	av_oformat_next (const AVOutputFormat *f)

const AVOutputFormat *	av_muxer_iterate (void **opaque)

const AVInputFormat *	av_demuxer_iterate (void **opaque)

AVFormatContext *	avformat_alloc_context (void)

void	avformat_free_context (AVFormatContext *s)

const AVClass *	avformat_get_class (void)

AVStream *	avformat_new_stream (AVFormatContext s, const AVCodec c)

int	av_stream_add_side_data (AVStream st, enum AVPacketSideDataType type, uint8_t data, size_t size)

uint8_t *	av_stream_new_side_data (AVStream *stream, enum AVPacketSideDataType type, int size)

uint8_t *	av_stream_get_side_data (const AVStream stream, enum AVPacketSideDataType type, int size)

AVProgram *	av_new_program (AVFormatContext *s, int id)

Подробное описание

Functions for querying libavformat capabilities, allocating core structures, etc.

Функции

◆ avformat_version()

unsigned avformat_version ( void )

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

Return the LIBAVFORMAT_VERSION_INT constant.

◆ avformat_configuration()

const char* avformat_configuration ( void )

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

Return the libavformat build-time configuration.

◆ avformat_license()

const char* avformat_license ( void )

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

Return the libavformat license.

◆ av_register_all()

attribute_deprecated void av_register_all ( void )

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

Initialize libavformat and register all the muxers, demuxers and protocols. If you do not call this function, then you can select exactly which formats you want to support.

См. также: av_register_input_format(); av_register_output_format()

Используется в MPlayer::MPlayer().

Граф вызова функции:

◆ av_register_input_format()

attribute_deprecated void av_register_input_format ( AVInputFormat * format )

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

◆ av_register_output_format()

attribute_deprecated void av_register_output_format ( AVOutputFormat * format )

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

◆ avformat_network_init()

int avformat_network_init ( void )

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

Do global initialization of network libraries. This is optional, and not recommended anymore.

This functions only exists to work around thread-safety issues with older GnuTLS or OpenSSL libraries. If libavformat is linked to newer versions of those libraries, or if you do not use them, calling this function is unnecessary. Otherwise, you need to call this function before any other threads using them are started.

This function will be deprecated once support for older GnuTLS and OpenSSL libraries is removed, and this function has no purpose anymore.

◆ avformat_network_deinit()

int avformat_network_deinit ( void )

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

Undo the initialization done by avformat_network_init. Call it only once for each time you called avformat_network_init.

◆ av_iformat_next()

attribute_deprecated AVInputFormat* av_iformat_next ( const AVInputFormat * f )

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

If f is NULL, returns the first registered input format, if f is non-NULL, returns the next registered input format after f or NULL if f is the last one.

◆ av_oformat_next()

attribute_deprecated AVOutputFormat* av_oformat_next ( const AVOutputFormat * f )

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

If f is NULL, returns the first registered output format, if f is non-NULL, returns the next registered output format after f or NULL if f is the last one.

◆ av_muxer_iterate()

const AVOutputFormat* av_muxer_iterate ( void ** opaque )

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

Iterate over all registered muxers.

Аргументы

opaque a pointer where libavformat will store the iteration state. Must point to NULL to start the iteration.

Возвращает: the next registered muxer or NULL when the iteration is finished

◆ av_demuxer_iterate()

const AVInputFormat* av_demuxer_iterate ( void ** opaque )

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

Iterate over all registered demuxers.

Аргументы

opaque a pointer where libavformat will store the iteration state. Must point to NULL to start the iteration.

Возвращает: the next registered demuxer or NULL when the iteration is finished

◆ avformat_alloc_context()

AVFormatContext* avformat_alloc_context ( void )

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

Allocate an AVFormatContext. avformat_free_context() can be used to free the context and everything allocated by the framework within it.

Используется в Movie::LoadFromLOD() и AudioBufferDataSource::Open().

Граф вызова функции:

◆ avformat_free_context()

void avformat_free_context ( AVFormatContext * s )

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

Free an AVFormatContext and all its streams.

Аргументы

s	context to free

◆ avformat_get_class()

const AVClass* avformat_get_class ( void )

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

Get the AVClass for AVFormatContext. It can be used in combination with AV_OPT_SEARCH_FAKE_OBJ for examining options.

См. также: av_opt_find().

◆ avformat_new_stream()

AVStream* avformat_new_stream	(	AVFormatContext *	s,
		const AVCodec *	c
	)

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

Add a new stream to a media file.

When demuxing, it is called by the demuxer in read_header(). If the flag AVFMTCTX_NOHEADER is set in s.ctx_flags, then it may also be called in read_packet().

When muxing, should be called by the user before avformat_write_header().

User is required to call avcodec_close() and avformat_free_context() to clean up the allocation by avformat_new_stream().

Аргументы

s	media file handle
c	If non-NULL, the AVCodecContext corresponding to the new stream will be initialized to use this codec. This is needed for e.g. codec-specific defaults to be set, so codec should be provided if it is known.

Возвращает: newly created stream or NULL on error.

◆ av_stream_add_side_data()

int av_stream_add_side_data	(	AVStream *	st,
		enum AVPacketSideDataType	type,
		uint8_t *	data,
		size_t	size
	)

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

Wrap an existing array as stream side data.

Аргументы

st	stream
type	side information type
data	the side data array. It must be allocated with the av_malloc() family of functions. The ownership of the data is transferred to st.
size	side information size

Возвращает: zero on success, a negative AVERROR code on failure. On failure, the stream is unchanged and the data remains owned by the caller.

◆ av_stream_new_side_data()

uint8_t* av_stream_new_side_data	(	AVStream *	stream,
		enum AVPacketSideDataType	type,
		int	size
	)

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

Allocate new information from stream.

Аргументы

stream	stream
type	desired side information type
size	side information size

Возвращает: pointer to fresh allocated data or NULL otherwise

◆ av_stream_get_side_data()

uint8_t* av_stream_get_side_data	(	const AVStream *	stream,
		enum AVPacketSideDataType	type,
		int *	size
	)

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>

Get side information from stream.

Аргументы

stream	stream
type	desired side information type
size	pointer for side information size to store (optional)

Возвращает: pointer to data if present or NULL otherwise

◆ av_new_program()

AVProgram* av_new_program	(	AVFormatContext *	s,
		int	id
	)

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavformat/avformat.h>