MythCodecMap Class Reference

#include <libmythtv/mythavutil.h>

Public Member Functions
	MythCodecMap ()=default
	~MythCodecMap ()
AVCodecContext *	GetCodecContext (const AVStream *Stream, const AVCodec *Codec=nullptr, bool NullCodec=false)
AVCodecContext *	FindCodecContext (const AVStream *Stream)
void	FreeCodecContext (const AVStream *Stream)
void	FreeAllContexts ()

Private Attributes
QMap< const AVStream *, AVCodecContext * >	m_streamMap
QRecursiveMutex	m_mapLock

Detailed Description

Utility class that keeps pointers to an AVStream and its AVCodecContext. The codec member of AVStream was previously used for this but is now deprecated.

Definition at line 26 of file mythavutil.h.

Constructor & Destructor Documentation

MythCodecMap()

MythCodecMap::MythCodecMap ( )

default

~MythCodecMap()

MythCodecMap::~MythCodecMap

(

)

Definition at line 287 of file mythavutil.cpp.

Member Function Documentation

FindCodecContext()

AVCodecContext * MythCodecMap::FindCodecContext

(

const AVStream *

Stream

)

Definition at line 329 of file mythavutil.cpp.

Referenced by AvFormatDecoder::RemoveAudioStreams(), AvFormatDecoder::ScanStreams(), and AvFormatDecoder::SeekReset().

FreeAllContexts()

void MythCodecMap::FreeAllContexts

(

)

Definition at line 349 of file mythavutil.cpp.

Referenced by ~MythCodecMap().

FreeCodecContext()

void MythCodecMap::FreeCodecContext

(

const AVStream *

Stream

)

Note

This will not free a hardware or frames context that is in anyway referenced outside of the decoder. Probably need to force the VideoOutput class to discard buffers as well. Leaking hardware contexts is a very bad idea.

Definition at line 337 of file mythavutil.cpp.

Referenced by MythAVFormatWriter::AddVideoStream(), AvFormatDecoder::autoSelectVideoTrack(), ThumbFinder::closeAVCodec(), AvFormatDecoder::CloseCodecs(), avfDecoder::deinit(), FreeAllContexts(), getFileInfo(), MythMMALContext::GetSupportedCodec(), grabThumbnail(), AvFormatDecoder::RemoveAudioStreams(), and AvFormatDecoder::ScanStreams().

GetCodecContext()

AVCodecContext * MythCodecMap::GetCodecContext	(	const AVStream *	Stream,
		const AVCodec *	Codec = nullptr,
		bool	NullCodec = false
	)

Definition at line 292 of file mythavutil.cpp.

Referenced by MythAVFormatWriter::AddAudioStream(), MythAVFormatWriter::AddVideoStream(), AvFormatDecoder::autoSelectVideoTrack(), MPEG2fixup::getCodecContext(), getFileInfo(), AvFormatDecoder::GetFrame(), AvFormatDecoder::GetSubHeader(), MythMMALContext::GetSupportedCodec(), AvFormatDecoder::GetTrackDesc(), grabThumbnail(), ThumbFinder::initAVCodec(), avfDecoder::initialize(), MythAVFormatWriter::OpenAudio(), AvFormatDecoder::OpenFile(), MythAVFormatWriter::OpenVideo(), AvFormatDecoder::ScanStreams(), AvFormatDecoder::SetupAudioStream(), MythAVFormatWriter::WriteAudioFrame(), and MythAVFormatWriter::WriteVideoFrame().

Member Data Documentation

m_mapLock

QRecursiveMutex MythCodecMap::m_mapLock

private

Definition at line 40 of file mythavutil.h.

Referenced by FreeAllContexts(), FreeCodecContext(), and GetCodecContext().

m_streamMap

QMap<const AVStream*, AVCodecContext*> MythCodecMap::m_streamMap

private

Definition at line 39 of file mythavutil.h.

Referenced by FindCodecContext(), FreeAllContexts(), FreeCodecContext(), and GetCodecContext().

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

• mythtv/libs/libmythtv/mythavutil.h
• mythtv/libs/libmythtv/mythavutil.cpp