QVideoTextureHelper Namespace Reference

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

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

Functions
bool	forceGlTextureExternalOesIsSet ()
void	setForceGlTextureExternalOesIsSet (bool isSet)
static bool	isRhiTextureFormatSupported (const QRhi *rhi, QRhiTexture::Format formatformat)
QRhiTexture::Format	resolvedRhiTextureFormat (QRhiTexture::Format formatformat, 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.
void	setExcludedRhiTextureFormats (QList< QRhiTexture::Format > formatsformats)
const TextureDescription *	textureDescription (QVideoFrameFormat::PixelFormat formatformat)
QString	vertexShaderFileName (const QVideoFrameFormat &formatformat)
QString	fragmentShaderFileName (const QVideoFrameFormat &formatformat, QRhi *rhi, QRhiSwapChain::Format surfaceFormat)
static QMatrix4x4	colorConversionMatrix (const QVideoFrameFormat &formatformat)
static float	convertPQFromLinear (float sig)
float	convertHLGFromLinear (float sig)
static float	convertSDRFromLinear (float sig)
void	updateUniformData (QByteArray *dstdst, QRhi *rhi, const QVideoFrameFormat &formatformat, const QVideoFrame &frame, const QMatrix4x4 &transformtransform, float opacity, float maxNits)
QVideoFrameTexturesUPtr	createTexturesFromHandles (QVideoFrameTexturesHandlesUPtr handles, QRhi &rhi, QVideoFrameFormat::PixelFormat pixelFormat, QSize sizesize, QVideoFrame sourceFrame={})
	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.
static std::unique_ptr< QVideoFrameTexturesFromMemory >	tryRecycleMemory (QVideoFrameTexturesUPtr oldTextures)
static QVideoFrameTexturesUPtr	createTexturesFromMemory (QVideoFrame frame, QRhi &rhi, QRhiResourceUpdateBatch &rub, QVideoFrameTexturesUPtr oldTextures)
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.

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.

Function Documentation

colorConversionMatrix()

QMatrix4x4 QVideoTextureHelper::colorConversionMatrix ( const QVideoFrameFormat & format )

static

Definition at line 508 of file qvideotexturehelper.cpp.

convertHLGFromLinear()

float QVideoTextureHelper::convertHLGFromLinear

(

float

sig

)

Definition at line 594 of file qvideotexturehelper.cpp.

Referenced by updateUniformData().

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convertPQFromLinear()

float QVideoTextureHelper::convertPQFromLinear ( float sig )

static

Definition at line 578 of file qvideotexturehelper.cpp.

Referenced by updateUniformData().

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convertSDRFromLinear()

float QVideoTextureHelper::convertSDRFromLinear ( float sig )

static

Definition at line 605 of file qvideotexturehelper.cpp.

Referenced by updateUniformData().

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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 950 of file qvideotexturehelper.cpp.

createTexturesFromHandles()

QVideoFrameTexturesUPtr QVideoTextureHelper::createTexturesFromHandles	(	QVideoFrameTexturesHandlesUPtr	texturesSet,
		QRhi &	rhi,
		QVideoFrameFormat::PixelFormat	pixelFormat,
		QSize	size,
		QVideoFrame	sourceFrame = {} )

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 884 of file qvideotexturehelper.cpp.

createTexturesFromMemory()

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

static

Definition at line 914 of file qvideotexturehelper.cpp.

forceGlTextureExternalOesIsSet()

bool QVideoTextureHelper::forceGlTextureExternalOesIsSet

(

)

Definition at line 40 of file qvideotexturehelper.cpp.

fragmentShaderFileName()

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

Definition at line 362 of file qvideotexturehelper.cpp.

isRhiTextureFormatSupported()

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

static

Definition at line 259 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 302 of file qvideotexturehelper.cpp.

setExcludedRhiTextureFormats()

void QVideoTextureHelper::setExcludedRhiTextureFormats

(

QList< QRhiTexture::Format >

formats

)

Definition at line 340 of file qvideotexturehelper.cpp.

setForceGlTextureExternalOesIsSet()

void QVideoTextureHelper::setForceGlTextureExternalOesIsSet

(

bool

isSet

)

Definition at line 45 of file qvideotexturehelper.cpp.

textureDescription()

const TextureDescription * QVideoTextureHelper::textureDescription

(

QVideoFrameFormat::PixelFormat

format

)

Definition at line 345 of file qvideotexturehelper.cpp.

tryRecycleMemory()

std::unique_ptr< QVideoFrameTexturesFromMemory > QVideoTextureHelper::tryRecycleMemory ( QVideoFrameTexturesUPtr oldTextures )

static

Definition at line 903 of file qvideotexturehelper.cpp.

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 610 of file qvideotexturehelper.cpp.

References convertHLGFromLinear(), convertPQFromLinear(), and convertSDRFromLinear().

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vertexShaderFileName()

QString QVideoTextureHelper::vertexShaderFileName

(

const QVideoFrameFormat &

format

)

Definition at line 350 of file qvideotexturehelper.cpp.

Variable Documentation

descriptions

const TextureDescription QVideoTextureHelper::descriptions

static

Definition at line 50 of file qvideotexturehelper.cpp.