qvideoframeconverter.cpp File Reference

(77c6fd0d22e5a87a3b94ad8e6795d4d26c8f3fde)

#include "qvideoframeconverter_p.h"
#include "qvideoframeconversionhelper_p.h"
#include "qvideoframeformat.h"
#include "qvideoframe_p.h"
#include "qmultimediautils_p.h"
#include "qthreadlocalrhi_p.h"
#include "qcachedvalue_p.h"
#include <QtCore/qcoreapplication.h>
#include <QtCore/qsize.h>
#include <QtCore/qhash.h>
#include <QtCore/qfile.h>
#include <QtGui/qimage.h>
#include <QtCore/qloggingcategory.h>
#include <QtMultimedia/private/qmultimedia_ranges_p.h>
#include <QtMultimedia/private/qvideotexturehelper_p.h>
#include <rhi/qrhi.h>

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Functions
static bool	pixelFormatHasAlpha (QVideoFrameFormat::PixelFormat format)
static QShader	ensureShader (const QString &name)
static void	rasterTransform (QImage &image, VideoTransformation transformation)
static void	imageCleanupHandler (void *info)
static bool	updateTextures (QRhi *rhi, std::unique_ptr< QRhiBuffer > &uniformBuffer, std::unique_ptr< QRhiSampler > &textureSampler, std::unique_ptr< QRhiShaderResourceBindings > &shaderResourceBindings, std::unique_ptr< QRhiGraphicsPipeline > &graphicsPipeline, std::unique_ptr< QRhiRenderPassDescriptor > &renderPass, QVideoFrame &frame, const QVideoFrameTexturesUPtr &videoFrameTextures)
static QImage	convertJPEG (const QVideoFrame &frame, const VideoTransformation &transform)
static QImage	convertCPU (const QVideoFrame &frame, const VideoTransformation &transform)
QImage	qImageFromVideoFrame (const QVideoFrame &frame, bool forceCpu)
QImage	qImageFromVideoFrame (const QVideoFrame &frame, const VideoTransformation &transformation, bool forceCpu)
QImage	videoFramePlaneAsImage (QVideoFrame &frame, int plane, QImage::Format targetFormat, QSize targetSize)
	Maps the video frame and returns an image having a shared ownership for the video frame and referencing to its mapped data.

Variables
static QT_BEGIN_NAMESPACE constexpr float	g_quad []

Function Documentation

convertCPU()

QImage convertCPU ( const QVideoFrame & frame, const VideoTransformation & transform )

static

Definition at line 216 of file qvideoframeconverter.cpp.

References rasterTransform().

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convertJPEG()

QImage convertJPEG ( const QVideoFrame & frame, const VideoTransformation & transform )

static

Definition at line 166 of file qvideoframeconverter.cpp.

References rasterTransform().

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ensureShader()

QShader ensureShader ( const QString & name )

static

Definition at line 75 of file qvideoframeconverter.cpp.

imageCleanupHandler()

void imageCleanupHandler ( void * info )

static

Definition at line 96 of file qvideoframeconverter.cpp.

Referenced by qImageFromVideoFrame().

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pixelFormatHasAlpha()

bool pixelFormatHasAlpha ( QVideoFrameFormat::PixelFormat format )

static

Definition at line 58 of file qvideoframeconverter.cpp.

qImageFromVideoFrame() [1/2]

QImage qImageFromVideoFrame	(	const QVideoFrame &	frame,
		bool	forceCpu )

Definition at line 237 of file qvideoframeconverter.cpp.

qImageFromVideoFrame() [2/2]

QImage qImageFromVideoFrame	(	const QVideoFrame &	frame,
		const VideoTransformation &	transformation,
		bool	forceCpu )

Definition at line 244 of file qvideoframeconverter.cpp.

References imageCleanupHandler().

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rasterTransform()

void rasterTransform ( QImage & image, VideoTransformation transformation )

static

Definition at line 85 of file qvideoframeconverter.cpp.

Referenced by convertCPU(), and convertJPEG().

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updateTextures()

bool updateTextures ( QRhi * rhi, std::unique_ptr< QRhiBuffer > & uniformBuffer, std::unique_ptr< QRhiSampler > & textureSampler, std::unique_ptr< QRhiShaderResourceBindings > & shaderResourceBindings, std::unique_ptr< QRhiGraphicsPipeline > & graphicsPipeline, std::unique_ptr< QRhiRenderPassDescriptor > & renderPass, QVideoFrame & frame, const QVideoFrameTexturesUPtr & videoFrameTextures )

static

Definition at line 102 of file qvideoframeconverter.cpp.

videoFramePlaneAsImage()

QImage videoFramePlaneAsImage	(	QVideoFrame &	frame,
		int	plane,
		QImage::Format	targetFormat,
		QSize	targetSize )

Maps the video frame and returns an image having a shared ownership for the video frame and referencing to its mapped data.

Definition at line 396 of file qvideoframeconverter.cpp.

References QVideoFramePrivate::handle().

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Variable Documentation

g_quad

QT_BEGIN_NAMESPACE constexpr float g_quad

staticconstexpr

Initial value:

                              = {
    
    1.f, -1.f,   1.f, 1.f,
    1.f,  1.f,   1.f, 0.f,
   -1.f, -1.f,   0.f, 1.f,
   -1.f,  1.f,   0.f, 0.f,
    
    1.f, -1.f,   1.f, 0.f,
    1.f,  1.f,   0.f, 0.f,
   -1.f, -1.f,   1.f, 1.f,
   -1.f,  1.f,   0.f, 1.f,
    
    1.f, -1.f,   0.f, 0.f,
    1.f,  1.f,   0.f, 1.f,
   -1.f, -1.f,   1.f, 0.f,
   -1.f,  1.f,   1.f, 1.f,
    
    1.f, -1.f,  0.f, 1.f,
    1.f,  1.f,  1.f, 1.f,
   -1.f, -1.f,  0.f, 0.f,
   -1.f,  1.f,  1.f, 0.f,
}

Definition at line 34 of file qvideoframeconverter.cpp.