QVideoTextureHelper Namespace Reference

Classes
class	QVideoFrameTexturesArray
struct	SubtitleLayout
struct	TextureDescription
struct	UniformData

Functions
const TextureDescription *	textureDescription (QVideoFrameFormat::PixelFormat format)
QString	vertexShaderFileName (const QVideoFrameFormat &format)
QString	fragmentShaderFileName (const QVideoFrameFormat &format, QRhiSwapChain::Format surfaceFormat)
static QMatrix4x4	colorMatrix (const QVideoFrameFormat &format)
static float	convertPQFromLinear (float sig)
float	convertHLGFromLinear (float sig)
static float	convertSDRFromLinear (float sig)
void	updateUniformData (QByteArray *dst, const QVideoFrameFormat &format, const QVideoFrame &frame, const QMatrix4x4 &transform, float opacity, float maxNits)
static bool	updateTextureWithMap (QVideoFrame frame, QRhi *rhi, QRhiResourceUpdateBatch *rub, int plane, std::unique_ptr< QRhiTexture > &tex)
static std::unique_ptr< QRhiTexture >	createTextureFromHandle (const QVideoFrame &frame, QRhi *rhi, int plane)
static std::unique_ptr< QVideoFrameTextures >	createTexturesFromHandles (const QVideoFrame &frame, QRhi *rhi)
std::unique_ptr< QVideoFrameTextures >	createTexturesFromMemory (const QVideoFrame &frame, QRhi *rhi, QRhiResourceUpdateBatch *rub, QVideoFrameTextures *old)
std::unique_ptr< QVideoFrameTextures >	createTextures (QVideoFrame &frame, QRhi *rhi, QRhiResourceUpdateBatch *rub, std::unique_ptr< QVideoFrameTextures > &&oldTextures)

Variables
static const TextureDescription	descriptions [QVideoFrameFormat::NPixelFormats]

Function Documentation

colorMatrix()

static QMatrix4x4 QVideoTextureHelper::colorMatrix ( const QVideoFrameFormat &  format )

static

Definition at line 373 of file qvideotexturehelper.cpp.

References QVideoFrameFormat::ColorRange_Full, QVideoFrameFormat::ColorSpace_AdobeRgb, QVideoFrameFormat::ColorSpace_BT2020, QVideoFrameFormat::ColorSpace_BT601, QVideoFrameFormat::ColorSpace_BT709, and QVideoFrameFormat::ColorSpace_Undefined.

Referenced by updateUniformData().

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convertHLGFromLinear()

float QVideoTextureHelper::convertHLGFromLinear

(

float

sig

)

Definition at line 485 of file qvideotexturehelper.cpp.

Referenced by updateUniformData().

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convertPQFromLinear()

static float QVideoTextureHelper::convertPQFromLinear ( float  sig )

static

Definition at line 469 of file qvideotexturehelper.cpp.

References c2.

Referenced by updateUniformData().

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convertSDRFromLinear()

static float QVideoTextureHelper::convertSDRFromLinear ( float  sig )

static

Definition at line 496 of file qvideotexturehelper.cpp.

Referenced by updateUniformData().

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createTextureFromHandle()

static std::unique_ptr< QRhiTexture > QVideoTextureHelper::createTextureFromHandle ( const QVideoFrame &  frame, QRhi *  rhi, int  plane  )

static

Definition at line 639 of file qvideotexturehelper.cpp.

References QRhi::backend(), descriptions, QRhiTexture::ExternalOES, fmt, QVideoFrameFormat::Format_SamplerExternalOES, QVideoFrameFormat::Format_SamplerRect, frame, QRhi::newTexture(), QRhi::OpenGLES2, qWarning, QVideoTextureHelper::TextureDescription::sizeScale, QVideoTextureHelper::TextureDescription::textureFormat, QRhiTexture::TextureRectangleGL, QVideoTextureHelper::TextureDescription::SizeScale::x, and QVideoTextureHelper::TextureDescription::SizeScale::y.

Referenced by createTexturesFromHandles().

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createTextures()

Q_MULTIMEDIA_EXPORT std::unique_ptr< QVideoFrameTextures > QVideoTextureHelper::createTextures	(	QVideoFrame &	frame,
		QRhi *	rhi,
		QRhiResourceUpdateBatch *	rub,
		std::unique_ptr< QVideoFrameTextures > &&	oldTextures
	)

Definition at line 724 of file qvideotexturehelper.cpp.

References createTexturesFromHandles(), createTexturesFromMemory(), frame, and QAbstractVideoBuffer::mapTextures().

Referenced by QSGVideoMaterial::updateTextures(), and QVideoWindowPrivate::updateTextures().

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createTexturesFromHandles()

static std::unique_ptr< QVideoFrameTextures > QVideoTextureHelper::createTexturesFromHandles ( const QVideoFrame &  frame, QRhi *  rhi  )

static

Definition at line 691 of file qvideotexturehelper.cpp.

References createTextureFromHandle(), descriptions, frame, QVideoTextureHelper::TextureDescription::nplanes, and ok.

Referenced by createTextures().

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createTexturesFromMemory()

std::unique_ptr< QVideoFrameTextures > QVideoTextureHelper::createTexturesFromMemory	(	const QVideoFrame &	frame,
		QRhi *	rhi,
		QRhiResourceUpdateBatch *	rub,
		QVideoFrameTextures *	old
	)

Definition at line 706 of file qvideotexturehelper.cpp.

References descriptions, frame, QVideoTextureHelper::TextureDescription::nplanes, ok, QVideoTextureHelper::QVideoFrameTexturesArray::takeTextures(), and updateTextureWithMap().

Referenced by createTextures().

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fragmentShaderFileName()

Q_MULTIMEDIA_EXPORT QString QVideoTextureHelper::fragmentShaderFileName	(	const QVideoFrameFormat &	format,
		QRhiSwapChain::Format	surfaceFormat
	)

Definition at line 245 of file qvideotexturehelper.cpp.

References QVideoFrameFormat::ColorTransfer_ST2084, QVideoFrameFormat::ColorTransfer_STD_B67, QVideoFrameFormat::Format_ABGR8888, QVideoFrameFormat::Format_ARGB8888, QVideoFrameFormat::Format_ARGB8888_Premultiplied, QVideoFrameFormat::Format_AYUV, QVideoFrameFormat::Format_AYUV_Premultiplied, QVideoFrameFormat::Format_BGRA8888, QVideoFrameFormat::Format_BGRA8888_Premultiplied, QVideoFrameFormat::Format_BGRX8888, QVideoFrameFormat::Format_IMC1, QVideoFrameFormat::Format_IMC2, QVideoFrameFormat::Format_IMC3, QVideoFrameFormat::Format_IMC4, QVideoFrameFormat::Format_Invalid, QVideoFrameFormat::Format_Jpeg, QVideoFrameFormat::Format_NV12, QVideoFrameFormat::Format_NV21, QVideoFrameFormat::Format_P010, QVideoFrameFormat::Format_P016, QVideoFrameFormat::Format_RGBA8888, QVideoFrameFormat::Format_RGBX8888, QVideoFrameFormat::Format_SamplerExternalOES, QVideoFrameFormat::Format_SamplerRect, QVideoFrameFormat::Format_UYVY, QVideoFrameFormat::Format_XBGR8888, QVideoFrameFormat::Format_XRGB8888, QVideoFrameFormat::Format_Y16, QVideoFrameFormat::Format_Y8, QVideoFrameFormat::Format_YUV420P, QVideoFrameFormat::Format_YUV420P10, QVideoFrameFormat::Format_YUV422P, QVideoFrameFormat::Format_YUYV, QVideoFrameFormat::Format_YV12, QString::fromLatin1(), QRhiSwapChain::HDRExtendedSrgbLinear, Q_FALLTHROUGH, and QStringLiteral.

Referenced by QVideoFrameFormat::fragmentShaderFileName(), QVideoWindowPrivate::setupGraphicsPipeline(), and updateTextures().

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textureDescription()

Q_MULTIMEDIA_EXPORT const TextureDescription * QVideoTextureHelper::textureDescription

(

QVideoFrameFormat::PixelFormat

format

)

Definition at line 223 of file qvideotexturehelper.cpp.

References descriptions.

Referenced by QVideoFrame::QVideoFrame(), QFFmpegVideoBuffer::map(), QVideoFrameFormat::planeCount(), Q_LOGGING_CATEGORY(), AVFVideoBuffer::textureHandle(), updateTextures(), QVideoWindowPrivate::updateTextures(), and QWasmVideoOutput::videoFrameCallback().

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updateTextureWithMap()

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

static

Definition at line 588 of file qvideotexturehelper.cpp.

References desc, descriptions, fmt, QImage::Format_ARGB32, QVideoFrameFormat::Format_Jpeg, frame, QByteArray::fromRawData(), QSize::height(), QRhi::newTexture(), qWarning, QVideoFrame::ReadOnly, QRhiTextureSubresourceUploadDescription::setData(), QRhiTextureSubresourceUploadDescription::setDataStride(), QVideoTextureHelper::TextureDescription::sizeScale, QVideoTextureHelper::TextureDescription::textureFormat, QRhiResourceUpdateBatch::uploadTexture(), QSize::width(), QVideoTextureHelper::TextureDescription::SizeScale::x, and QVideoTextureHelper::TextureDescription::SizeScale::y.

Referenced by createTexturesFromMemory().

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updateUniformData()

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

Definition at line 501 of file qvideotexturehelper.cpp.

References colorMatrix(), QVideoFrameFormat::ColorTransfer_ST2084, QVideoFrameFormat::ColorTransfer_STD_B67, QMatrix4x4::constData(), convertHLGFromLinear(), convertPQFromLinear(), convertSDRFromLinear(), QVideoFrameFormat::Format_ABGR8888, QVideoFrameFormat::Format_ARGB8888, QVideoFrameFormat::Format_ARGB8888_Premultiplied, QVideoFrameFormat::Format_AYUV, QVideoFrameFormat::Format_AYUV_Premultiplied, QVideoFrameFormat::Format_BGRA8888, QVideoFrameFormat::Format_BGRA8888_Premultiplied, QVideoFrameFormat::Format_BGRX8888, QVideoFrameFormat::Format_IMC1, QVideoFrameFormat::Format_IMC2, QVideoFrameFormat::Format_IMC3, QVideoFrameFormat::Format_IMC4, QVideoFrameFormat::Format_Invalid, QVideoFrameFormat::Format_Jpeg, QVideoFrameFormat::Format_NV12, QVideoFrameFormat::Format_NV21, QVideoFrameFormat::Format_P010, QVideoFrameFormat::Format_P016, QVideoFrameFormat::Format_RGBA8888, QVideoFrameFormat::Format_RGBX8888, QVideoFrameFormat::Format_SamplerExternalOES, QVideoFrameFormat::Format_SamplerRect, QVideoFrameFormat::Format_UYVY, QVideoFrameFormat::Format_XBGR8888, QVideoFrameFormat::Format_XRGB8888, QVideoFrameFormat::Format_Y16, QVideoFrameFormat::Format_Y8, QVideoFrameFormat::Format_YUV420P, QVideoFrameFormat::Format_YUV420P10, QVideoFrameFormat::Format_YUV422P, QVideoFrameFormat::Format_YUYV, QVideoFrameFormat::Format_YV12, frame, QSize::height(), Q_UNUSED, QMatrix4x4::scale(), QWidget::size, and QSize::width().

Referenced by QVideoWindowPrivate::render(), and QVideoFrameFormat::updateUniformData().

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vertexShaderFileName()

Q_MULTIMEDIA_EXPORT QString QVideoTextureHelper::vertexShaderFileName

(

const QVideoFrameFormat &

format

)

Definition at line 228 of file qvideotexturehelper.cpp.

References fmt, QVideoFrameFormat::Format_SamplerExternalOES, QVideoFrameFormat::Format_SamplerRect, Q_UNUSED, and QStringLiteral.

Referenced by QVideoWindowPrivate::setupGraphicsPipeline(), updateTextures(), and QVideoFrameFormat::vertexShaderFileName().

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Variable Documentation

descriptions

const TextureDescription QVideoTextureHelper::descriptions[QVideoFrameFormat::NPixelFormats]

static

Definition at line 16 of file qvideotexturehelper.cpp.

Referenced by createTextureFromHandle(), createTexturesFromHandles(), createTexturesFromMemory(), textureDescription(), and updateTextureWithMap().