#include <libmythtv/decoders/mythnvdeccontext.h>

Inheritance diagram for MythNVDECContext:

Collaboration diagram for MythNVDECContext:

Classes
class	MythNVDECCaps

Public Member Functions
	MythNVDECContext (DecoderBase *Parent, MythCodecID CodecID)

	~MythNVDECContext () override

void	InitVideoCodec (AVCodecContext *Context, bool SelectedStream, bool &DirectRendering) override

int	HwDecoderInit (AVCodecContext *Context) override

bool	RetrieveFrame (AVCodecContext Context, MythVideoFrame Frame, AVFrame *AvFrame) override

void	SetDeinterlacing (AVCodecContext Context, MythVideoProfile Profile, bool DoubleRate) override
	Enable NVDEC/CUDA deinterlacing if necessary. More...

void	PostProcessFrame (AVCodecContext Context, MythVideoFrame Frame) override

bool	IsDeinterlacing (bool &DoubleRate, bool StreamChange=false) override

bool	DecoderWillResetOnFlush (void) override

Public Member Functions inherited from MythCodecContext
	MythCodecContext (DecoderBase *Parent, MythCodecID CodecID)

virtual	~MythCodecContext ()=default

virtual int	FilteredReceiveFrame (AVCodecContext Context, AVFrame Frame)
	Retrieve and process/filter AVFrame. More...

virtual void	SetDecoderOptions (AVCodecContext , const AVCodec )

virtual bool	DecoderWillResetOnAspect (void)

virtual bool	DecoderNeedsReset (AVCodecContext *)

Static Public Member Functions
static MythCodecID	GetSupportedCodec (AVCodecContext CodecContext, const AVCodec Codec, const QString &Decoder, AVStream *Stream, uint StreamType)
	Determine whether NVDEC decoding is supported for this codec. More...

static enum AVPixelFormat	GetFormat (AVCodecContext Context, const AVPixelFormat PixFmt)

static bool	GetBuffer (AVCodecContext Context, MythVideoFrame Frame, AVFrame *AvFrame, int Flags)
	Convert AVFrame data to MythFrame. More...

static int	InitialiseDecoder (AVCodecContext *Context)

static bool	HaveNVDEC (bool Reinit=false)

static void	GetDecoderList (QStringList &Decoders)

Static Public Member Functions inherited from MythCodecContext
static MythCodecContext *	CreateContext (DecoderBase *Parent, MythCodecID Codec)

static void	GetDecoders (RenderOptions &Opts, bool Reinit=false)

static QStringList	GetDecoderDescription (void)

static MythCodecID	FindDecoder (const QString &Decoder, AVStream Stream, AVCodecContext Context, const AVCodec *Codec)

static int	GetBuffer (struct AVCodecContext Context, AVFrame Frame, int Flags)
	A generic hardware buffer initialisation method when using AVHWFramesContext. More...

static bool	GetBuffer2 (struct AVCodecContext Context, MythVideoFrame Frame, AVFrame *AvFrame, int Flags)
	A generic hardware buffer initialisation method when AVHWFramesContext is NOT used. More...

static int	InitialiseDecoder (AVCodecContext *Context, CreateHWDecoder Callback, const QString &Debug)
	Initialise a hardware decoder that is expected to use AVHWFramesContext. More...

static int	InitialiseDecoder2 (AVCodecContext *Context, CreateHWDecoder Callback, const QString &Debug)
	Initialise a hardware decoder that is NOT expected to use AVHWFramesContext. More...

static void	ReleaseBuffer (void Opaque, uint8_t Data)

static void	FramesContextFinished (AVHWFramesContext *Context)

static void	DeviceContextFinished (AVHWDeviceContext *Context)

static void	CreateDecoderCallback (void Wait, void Context, void *Callback)

static MythPlayerUI *	GetPlayerUI (AVCodecContext *Context)

static bool	FrameTypeIsSupported (AVCodecContext *Context, VideoFrameType Format)

static AVBufferRef *	CreateDevice (AVHWDeviceType Type, MythInteropGPU *Interop, const QString &Device=QString())

static bool	IsUnsupportedProfile (AVCodecContext *Context)
	Most hardware decoders do not support these codecs/profiles. More...

static QString	GetProfileDescription (CodecProfile Profile, QSize Size, VideoFrameType Format=FMT_NONE, uint ColorDepth=0)

static CodecProfile	FFmpegToMythProfile (AVCodecID CodecID, int Profile)

Private Member Functions
void	InitFramesContext (AVCodecContext *Context)

Static Private Member Functions
static const std::vector< MythNVDECCaps > &	GetProfiles (void)

Private Attributes
AVBufferRef *	m_framesContext { nullptr }

MythDeintType	m_deinterlacer { DEINT_NONE }

bool	m_deinterlacer2x { false }

Additional Inherited Members
Public Types inherited from MythCodecContext
enum	CodecProfile : std::uint8_t { NoProfile = 0, MPEG1, MPEG2, MPEG2Simple, MPEG2Main, MPEG2422, MPEG2High, MPEG2Spatial, MPEG2SNR, MPEG4, MPEG4Simple, MPEG4SimpleScaleable, MPEG4Core, MPEG4Main, MPEG4NBit, MPEG4ScaleableTexture, MPEG4SimpleFace, MPEG4BasicAnimated, MPEG4Hybrid, MPEG4AdvancedRT, MPEG4CoreScaleable, MPEG4AdvancedCoding, MPEG4AdvancedCore, MPEG4AdvancedScaleableTexture, MPEG4SimpleStudio, MPEG4AdvancedSimple, H263, H264, H264Baseline, H264ConstrainedBaseline, H264Main, H264MainExtended, H264High, H264High10, H264Extended, H264High422, H264High444, H264ConstrainedHigh, HEVC, HEVCMain, HEVCMain10, HEVCMainStill, HEVCRext, HEVCMain10HDR, HEVCMain10HDRPlus, VC1, VC1Simple, VC1Main, VC1Complex, VC1Advanced, VP8, VP9, VP9_0, VP9_1, VP9_2, VP9_3, VP9_2HDR, VP9_2HDRPlus, VP9_3HDR, VP9_3HDRPlus, AV1, AV1Main, AV1High, AV1Professional, MJPEG }

Protected Member Functions inherited from MythCodecContext
virtual bool	RetrieveHWFrame (MythVideoFrame Frame, AVFrame AvFrame)

Static Protected Member Functions inherited from MythCodecContext
static void	DestroyInterop (MythInteropGPU *Interop)

static void	NewHardwareFramesContext (void)
	Track the number of concurrent frames contexts. More...

Protected Attributes inherited from MythCodecContext
DecoderBase *	m_parent { nullptr }

MythCodecID	m_codecID { kCodec_NONE }

bool	m_resetRequired { false }

Static Protected Attributes inherited from MythCodecContext
static QAtomicInt	s_hwFramesContextCount

Detailed Description

Definition at line 24 of file mythnvdeccontext.h.

Constructor & Destructor Documentation

◆ MythNVDECContext()

MythNVDECContext::MythNVDECContext	(	DecoderBase *	Parent,
		MythCodecID	CodecID
	)

Definition at line 18 of file mythnvdeccontext.cpp.

◆ ~MythNVDECContext()

MythNVDECContext::~MythNVDECContext ( )

override

Definition at line 23 of file mythnvdeccontext.cpp.

Member Function Documentation

◆ InitVideoCodec()

void MythNVDECContext::InitVideoCodec	(	AVCodecContext *	Context,
		bool	SelectedStream,
		bool &	DirectRendering
	)

overridevirtual

Reimplemented from MythCodecContext.

Definition at line 189 of file mythnvdeccontext.cpp.

◆ HwDecoderInit()

int MythNVDECContext::HwDecoderInit ( AVCodecContext * Context )

overridevirtual

Reimplemented from MythCodecContext.

Definition at line 201 of file mythnvdeccontext.cpp.

◆ RetrieveFrame()

bool MythNVDECContext::RetrieveFrame	(	AVCodecContext *	Context,
		MythVideoFrame *	Frame,
		AVFrame *	AvFrame
	)

overridevirtual

Reimplemented from MythCodecContext.

Definition at line 377 of file mythnvdeccontext.cpp.

◆ SetDeinterlacing()

void MythNVDECContext::SetDeinterlacing	(	AVCodecContext *	Context,
		MythVideoProfile *	Profile,
		bool	DoubleRate
	)

overridevirtual

Enable NVDEC/CUDA deinterlacing if necessary.

Note: We can only set this once just after codec initialisation. We do not have control over the scan type - control is effectively passed to CUDA to detect and handle all deinterlacing.

Reimplemented from MythCodecContext.

Definition at line 227 of file mythnvdeccontext.cpp.

◆ PostProcessFrame()

void MythNVDECContext::PostProcessFrame	(	AVCodecContext *	Context,
		MythVideoFrame *	Frame
	)

overridevirtual

Reimplemented from MythCodecContext.

Definition at line 327 of file mythnvdeccontext.cpp.

◆ IsDeinterlacing()

bool MythNVDECContext::IsDeinterlacing	(	bool &	DoubleRate,
		bool	StreamChange = `false`
	)

overridevirtual

Reimplemented from MythCodecContext.

Definition at line 346 of file mythnvdeccontext.cpp.

◆ DecoderWillResetOnFlush()

bool MythNVDECContext::DecoderWillResetOnFlush ( void )

overridevirtual

Reimplemented from MythCodecContext.

Definition at line 341 of file mythnvdeccontext.cpp.

◆ GetSupportedCodec()

MythCodecID MythNVDECContext::GetSupportedCodec	(	AVCodecContext **	Context,
		const AVCodec **	Codec,
		const QString &	Decoder,
		AVStream *	Stream,
		uint	StreamType
	)

static

Determine whether NVDEC decoding is supported for this codec.

The objective here is, as for other decoders, to fail fast so that we can fallback to another decoder as soon as possible if necessary.

Definition at line 33 of file mythnvdeccontext.cpp.

Referenced by MythCodecContext::FindDecoder().

◆ GetFormat()

enum AVPixelFormat MythNVDECContext::GetFormat	(	AVCodecContext *	Context,
		const AVPixelFormat *	PixFmt
	)

static

Definition at line 357 of file mythnvdeccontext.cpp.

Referenced by InitVideoCodec().

◆ GetBuffer()

bool MythNVDECContext::GetBuffer	(	AVCodecContext *	Context,
		MythVideoFrame *	Frame,
		AVFrame *	AvFrame,
		int	Flags
	)

static

Convert AVFrame data to MythFrame.

Note: The CUDA decoder returns a complete AVFrame which should represent an NV12 frame held in device (GPU) memory. There is no need to call avcodec_default_get_buffer2.

Definition at line 393 of file mythnvdeccontext.cpp.

Referenced by RetrieveFrame().

◆ InitialiseDecoder()

int MythNVDECContext::InitialiseDecoder ( AVCodecContext * Context )

static

Definition at line 134 of file mythnvdeccontext.cpp.

Referenced by HwDecoderInit().

◆ HaveNVDEC()

bool MythNVDECContext::HaveNVDEC ( bool Reinit = false )

static

Definition at line 513 of file mythnvdeccontext.cpp.

Referenced by MythCodecContext::GetDecoders(), and GetSupportedCodec().

◆ GetDecoderList()

void MythNVDECContext::GetDecoderList ( QStringList & Decoders )

static

Definition at line 550 of file mythnvdeccontext.cpp.

Referenced by MythCodecContext::GetDecoderDescription().

◆ InitFramesContext()

void MythNVDECContext::InitFramesContext ( AVCodecContext * Context )

private

Definition at line 635 of file mythnvdeccontext.cpp.

Referenced by GetFormat().

◆ GetProfiles()

const std::vector< MythNVDECContext::MythNVDECCaps > & MythNVDECContext::GetProfiles ( void )

staticprivate

Definition at line 564 of file mythnvdeccontext.cpp.

Referenced by GetDecoderList(), GetSupportedCodec(), and HaveNVDEC().

Member Data Documentation

◆ m_framesContext

AVBufferRef* MythNVDECContext::m_framesContext { nullptr }

private

Definition at line 70 of file mythnvdeccontext.h.

Referenced by InitFramesContext(), and ~MythNVDECContext().

◆ m_deinterlacer

MythDeintType MythNVDECContext::m_deinterlacer { DEINT_NONE }

private

Definition at line 73 of file mythnvdeccontext.h.

Referenced by IsDeinterlacing(), PostProcessFrame(), and SetDeinterlacing().

◆ m_deinterlacer2x

bool MythNVDECContext::m_deinterlacer2x { false }

private

Definition at line 74 of file mythnvdeccontext.h.

Referenced by IsDeinterlacing(), PostProcessFrame(), and SetDeinterlacing().

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

mythtv/libs/libmythtv/decoders/mythnvdeccontext.h
mythtv/libs/libmythtv/decoders/mythnvdeccontext.cpp

Classes

Public Member Functions

Static Public Member Functions

Private Member Functions

Static Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ MythNVDECContext()

◆ ~MythNVDECContext()

Member Function Documentation

◆ InitVideoCodec()

◆ HwDecoderInit()

◆ RetrieveFrame()

◆ SetDeinterlacing()

◆ PostProcessFrame()

◆ IsDeinterlacing()

◆ DecoderWillResetOnFlush()

◆ GetSupportedCodec()

◆ GetFormat()

◆ GetBuffer()

◆ InitialiseDecoder()

◆ HaveNVDEC()

◆ GetDecoderList()

◆ InitFramesContext()

◆ GetProfiles()

Member Data Documentation

◆ m_framesContext

◆ m_deinterlacer

◆ m_deinterlacer2x