QVideoTextureHelper Namespace Reference

Classes
class	QVideoFrameTexturesFromRhiTextureArray
class	QVideoFrameTexturesFromMemory
class	QVideoFrameTexturesFromHandlesSet
struct	TextureDescription
struct	UniformData
struct	SubtitleLayout

Typedefs
using	RhiTextureArray = std::array<std::unique_ptr<QRhiTexture>, TextureDescription::maxPlanes>

Enumerations
enum class	UpdateTextureWithMapResult : uint8_t {   Failed , UpdatedWithDataCopy , UpdatedWithDataReference , Failed ,   UpdatedWithDataCopy , UpdatedWithDataReference }
enum class	UpdateTextureWithMapResult : uint8_t {   Failed , UpdatedWithDataCopy , UpdatedWithDataReference , Failed ,   UpdatedWithDataCopy , UpdatedWithDataReference }

Functions
Q_MULTIMEDIA_EXPORT const TextureDescription *	textureDescription (QVideoFrameFormat::PixelFormat format)
Q_MULTIMEDIA_EXPORT QString	vertexShaderFileName (const QVideoFrameFormat &format)
Q_MULTIMEDIA_EXPORT QString	fragmentShaderFileName (const QVideoFrameFormat &format, QRhi *rhi, QRhiSwapChain::Format surfaceFormat=QRhiSwapChain::SDR)
Q_MULTIMEDIA_EXPORT void	updateUniformData (QByteArray *dst, QRhi *rhi, const QVideoFrameFormat &format, const QVideoFrame &frame, const QMatrix4x4 &transform, float opacity, float maxNits=100)
Q_MULTIMEDIA_EXPORT QVideoFrameTexturesUPtr	createTexturesFromHandles (QVideoFrameTexturesHandlesUPtr handles, QRhi &rhi, QVideoFrameFormat::PixelFormat pixelFormat, QSize size)
	Creates plane textures from texture handles set by the specified rhi. The result owns the specified handles set; the QRhiTexture(s), exposed by the result refer to the owned handles set. If the specified size is empty or pixelFormat is invalid, null is returned.
Q_MULTIMEDIA_EXPORT QVideoFrameTexturesUPtr	createTextures (const QVideoFrame &frame, QRhi &rhi, QRhiResourceUpdateBatch &rub, QVideoFrameTexturesUPtr &oldTextures)
	Creates plane textures from a video frame by the specified rhi. If possible, the function modifies 'oldTextures', which is the texture from the pool, and returns the specified one or a new one with any taken data.
Q_MULTIMEDIA_EXPORT QRhiTexture::Format	resolvedRhiTextureFormat (QRhiTexture::Format format, QRhi *rhi)
	Returns a QRhiTexture::Format taking into account rhi capabilities and explicitly excluded formats using a chain of pre-defined fallback texture formats. If no valid fallback is determined, will return the format argument.
Q_MULTIMEDIA_EXPORT void	setExcludedRhiTextureFormats (QList< QRhiTexture::Format > formats)
Q_MULTIMEDIA_EXPORT bool	forceGlTextureExternalOesIsSet ()
static bool	isRhiTextureFormatSupported (const QRhi *rhi, QRhiTexture::Format format)
static QMatrix4x4	colorMatrix (const QVideoFrameFormat &format)
static float	convertPQFromLinear (float sig)
float	convertHLGFromLinear (float sig)
static float	convertSDRFromLinear (float sig)
static UpdateTextureWithMapResult	updateTextureWithMap (const QVideoFrame &frame, QRhi &rhi, QRhiResourceUpdateBatch &rub, int plane, std::unique_ptr< QRhiTexture > &tex)
static std::unique_ptr< QRhiTexture >	createTextureFromHandle (QVideoFrameTexturesHandles &texturesSet, QRhi &rhi, QVideoFrameFormat::PixelFormat pixelFormat, QSize size, int plane)
template<typename TexturesType, typename... Args>
static QVideoFrameTexturesUPtr	createTexturesArray (QRhi &rhi, QVideoFrameTexturesHandles &texturesSet, QVideoFrameFormat::PixelFormat pixelFormat, QSize size, Args &&...args)
static QVideoFrameTexturesUPtr	createTexturesFromMemory (QVideoFrame frame, QRhi &rhi, QRhiResourceUpdateBatch &rub, QVideoFrameTexturesUPtr &oldTextures)

Variables
static const TextureDescription	descriptions [QVideoFrameFormat::NPixelFormats]

Typedef Documentation

RhiTextureArray

using QVideoTextureHelper::RhiTextureArray = std::array<std::unique_ptr<QRhiTexture>, TextureDescription::maxPlanes>

Definition at line 27 of file qvideoframetexturefromsource_p.h.

Enumeration Type Documentation

UpdateTextureWithMapResult [1/2]

enum class QVideoTextureHelper::UpdateTextureWithMapResult : uint8_t

strong

Enumerator
Failed
UpdatedWithDataCopy
UpdatedWithDataReference
Failed
UpdatedWithDataCopy
UpdatedWithDataReference

Definition at line 710 of file qvideotexturehelper.cpp.

UpdateTextureWithMapResult [2/2]

enum class QVideoTextureHelper::UpdateTextureWithMapResult : uint8_t

strong

Enumerator
Failed
UpdatedWithDataCopy
UpdatedWithDataReference
Failed
UpdatedWithDataCopy
UpdatedWithDataReference

Definition at line 710 of file qvideotexturehelper.cpp.

Function Documentation

colorMatrix()

QMatrix4x4 QVideoTextureHelper::colorMatrix ( const QVideoFrameFormat & format )

static

Definition at line 483 of file qvideotexturehelper.cpp.

convertHLGFromLinear()

float QVideoTextureHelper::convertHLGFromLinear

(

float

sig

)

Definition at line 569 of file qvideotexturehelper.cpp.

Referenced by updateUniformData().

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convertPQFromLinear()

float QVideoTextureHelper::convertPQFromLinear ( float sig )

static

Definition at line 553 of file qvideotexturehelper.cpp.

Referenced by updateUniformData().

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convertSDRFromLinear()

float QVideoTextureHelper::convertSDRFromLinear ( float sig )

static

Definition at line 580 of file qvideotexturehelper.cpp.

Referenced by updateUniformData().

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createTextureFromHandle()

std::unique_ptr< QRhiTexture > QVideoTextureHelper::createTextureFromHandle ( QVideoFrameTexturesHandles & texturesSet, QRhi & rhi, QVideoFrameFormat::PixelFormat pixelFormat, QSize size, int plane )

static

Definition at line 788 of file qvideotexturehelper.cpp.

createTextures()

QVideoFrameTexturesUPtr QVideoTextureHelper::createTextures	(	const QVideoFrame &	frame,
		QRhi &	rhi,
		QRhiResourceUpdateBatch &	rub,
		QVideoFrameTexturesUPtr &	oldTextures )

Creates plane textures from a video frame by the specified rhi. If possible, the function modifies 'oldTextures', which is the texture from the pool, and returns the specified one or a new one with any taken data.

Definition at line 893 of file qvideotexturehelper.cpp.

createTexturesArray()

template<typename TexturesType, typename... Args>

QVideoFrameTexturesUPtr QVideoTextureHelper::createTexturesArray ( QRhi & rhi, QVideoFrameTexturesHandles & texturesSet, QVideoFrameFormat::PixelFormat pixelFormat, QSize size, Args &&... args )

static

Definition at line 820 of file qvideotexturehelper.cpp.

createTexturesFromHandles()

QVideoFrameTexturesUPtr QVideoTextureHelper::createTexturesFromHandles	(	QVideoFrameTexturesHandlesUPtr	handles,
		QRhi &	rhi,
		QVideoFrameFormat::PixelFormat	pixelFormat,
		QSize	size )

Creates plane textures from texture handles set by the specified rhi. The result owns the specified handles set; the QRhiTexture(s), exposed by the result refer to the owned handles set. If the specified size is empty or pixelFormat is invalid, null is returned.

Definition at line 837 of file qvideotexturehelper.cpp.

createTexturesFromMemory()

QVideoFrameTexturesUPtr QVideoTextureHelper::createTexturesFromMemory ( QVideoFrame frame, QRhi & rhi, QRhiResourceUpdateBatch & rub, QVideoFrameTexturesUPtr & oldTextures )

static

Definition at line 856 of file qvideotexturehelper.cpp.

References Failed, and UpdatedWithDataReference.

forceGlTextureExternalOesIsSet()

bool QVideoTextureHelper::forceGlTextureExternalOesIsSet

(

)

Definition at line 24 of file qvideotexturehelper.cpp.

fragmentShaderFileName()

QString QVideoTextureHelper::fragmentShaderFileName	(	const QVideoFrameFormat &	format,
		QRhi *	rhi,
		QRhiSwapChain::Format	surfaceFormat = QRhiSwapChain::SDR )

Definition at line 342 of file qvideotexturehelper.cpp.

isRhiTextureFormatSupported()

bool QVideoTextureHelper::isRhiTextureFormatSupported ( const QRhi * rhi, QRhiTexture::Format format )

static

Definition at line 239 of file qvideotexturehelper.cpp.

resolvedRhiTextureFormat()

QRhiTexture::Format QVideoTextureHelper::resolvedRhiTextureFormat	(	QRhiTexture::Format	format,
		QRhi *	rhi )

Returns a QRhiTexture::Format taking into account rhi capabilities and explicitly excluded formats using a chain of pre-defined fallback texture formats. If no valid fallback is determined, will return the format argument.

Definition at line 282 of file qvideotexturehelper.cpp.

setExcludedRhiTextureFormats()

void QVideoTextureHelper::setExcludedRhiTextureFormats

(

QList< QRhiTexture::Format >

formats

)

Definition at line 315 of file qvideotexturehelper.cpp.

textureDescription()

const TextureDescription * QVideoTextureHelper::textureDescription

(

QVideoFrameFormat::PixelFormat

format

)

Definition at line 320 of file qvideotexturehelper.cpp.

updateTextureWithMap()

UpdateTextureWithMapResult QVideoTextureHelper::updateTextureWithMap ( const QVideoFrame & frame, QRhi & rhi, QRhiResourceUpdateBatch & rub, int plane, std::unique_ptr< QRhiTexture > & tex )

static

Definition at line 716 of file qvideotexturehelper.cpp.

References Failed, UpdatedWithDataCopy, and UpdatedWithDataReference.

updateUniformData()

void QVideoTextureHelper::updateUniformData	(	QByteArray *	dst,
		QRhi *	rhi,
		const QVideoFrameFormat &	format,
		const QVideoFrame &	frame,
		const QMatrix4x4 &	transform,
		float	opacity,
		float	maxNits = 100 )

Definition at line 585 of file qvideotexturehelper.cpp.

References convertHLGFromLinear(), convertPQFromLinear(), convertSDRFromLinear(), and QVideoFramePrivate::hasDmaBuf().

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vertexShaderFileName()

QString QVideoTextureHelper::vertexShaderFileName

(

const QVideoFrameFormat &

format

)

Definition at line 325 of file qvideotexturehelper.cpp.

Variable Documentation

descriptions

const TextureDescription QVideoTextureHelper::descriptions

static

Definition at line 30 of file qvideotexturehelper.cpp.