RAII owner of a single AVFormatContext on the write path. More...

#include <FFmpegMuxContext.hpp>

Collaboration diagram for MayaFlux::IO::FFmpegMuxContext:

Public Member Functions
AVStream *	add_stream ()
	Allocate a new AVStream inside this context.

void	close ()
	Write the container trailer, flush avio, and release all resources.

	FFmpegMuxContext ()=default

	FFmpegMuxContext (const FFmpegMuxContext &)=delete

	FFmpegMuxContext (FFmpegMuxContext &&)=delete

bool	is_header_written () const
	True if write_header() completed successfully.

bool	is_open () const
	True if the context is open and ready to accept streams / packets.

const std::string &	last_error () const

bool	open (const std::string &filepath, const std::string &explicit_format={})
	Allocate an output context and open the avio layer for writing.

FFmpegMuxContext &	operator= (const FFmpegMuxContext &)=delete

FFmpegMuxContext &	operator= (FFmpegMuxContext &&)=delete

bool	write_header ()
	Write the container header to the output file.

bool	write_packet (AVPacket *pkt)
	Submit one encoded packet for interleaved writing.

	~FFmpegMuxContext ()

Public Attributes
AVFormatContext *	format_context = nullptr
	Owned; freed in close().

Private Attributes
bool	m_header_written {}

std::string	m_last_error

Detailed Description

RAII owner of a single AVFormatContext on the write path.

Encapsulates all format-level (container) FFmpeg mux operations:

Allocating an output context and opening the I/O layer (avio)
Writing the container header after all streams have been added
Writing interleaved encoded packets
Writing the container trailer and releasing all resources

Does NOT own any codec context, resampler, scaler, or stream — those are domain-specific and belong to AudioEncodeContext / VideoEncodeContext, which each call avformat_new_stream() on this context during their own open().

Stream contexts must be opened and fully configured before write_header() is called. Packets submitted via write_packet() must have stream_index and PTS/DTS set by the originating encode context.

Not copyable or movable; always stack- or member-allocated inside the owner (SoundFileWriter worker thread, future VideoFileWriter worker thread).

FFmpeg global initialisation is shared with FFmpegDemuxContext via the static FFmpegDemuxContext::init_ffmpeg() call.

Definition at line 35 of file FFmpegMuxContext.hpp.

The documentation for this class was generated from the following files:

Public Member Functions

Public Attributes

Private Attributes

Detailed Description