QSGVivanteVideoMaterial Class Reference

#include <qsgvivantevideomaterial.h>

Inheritance diagram for QSGVivanteVideoMaterial:

Collaboration diagram for QSGVivanteVideoMaterial:

Public Member Functions
	QSGVivanteVideoMaterial ()
	~QSGVivanteVideoMaterial ()
QSGMaterialType *	type () const override
	This function is called by the scene graph to query an identifier that is unique to the QSGMaterialShader instantiated by createShader().
QSGMaterialShader *	createShader (QSGRendererInterface::RenderMode) const override
	This function returns a new instance of a the QSGMaterialShader implementation used to render geometry for a specific implementation of QSGMaterial.
int	compare (const QSGMaterial *other) const override
	Compares this material to other and returns 0 if they are equal; -1 if this material should sort before other and 1 if other should sort before.
void	updateBlending ()
void	setCurrentFrame (const QVideoFrame &frame, QSGVideoNode::FrameFlags flags)
void	bind ()
GLuint	vivanteMapping (QVideoFrame texIdVideoFramePair)
void	setOpacity (float o)
Public Member Functions inherited from QSGMaterial
	QSGMaterial ()
virtual	~QSGMaterial ()
QSGMaterial::Flags	flags () const
	Returns the material's flags.
void	setFlag (Flags flags, bool on=true)
	Sets the flags flags on this material if on is true; otherwise clears the attribute.
int	viewCount () const

Friends
class	QSGVivanteVideoMaterialShader

Additional Inherited Members
Public Types inherited from QSGMaterial
enum	Flag {   Blending = 0x0001 , RequiresDeterminant = 0x0002 , RequiresFullMatrixExceptTranslate = 0x0004 | RequiresDeterminant , RequiresFullMatrix = 0x0008 | RequiresFullMatrixExceptTranslate ,   NoBatching = 0x0010 , MultiView2 = 0x10000 , MultiView3 = 0x20000 , MultiView4 = 0x40000 }
	\value Blending Set this flag to true if the material requires blending to be enabled during rendering. More...

Detailed Description

Definition at line 18 of file qsgvivantevideomaterial.h.

Constructor & Destructor Documentation

QSGVivanteVideoMaterial()

QSGVivanteVideoMaterial::QSGVivanteVideoMaterial

(

)

Definition at line 25 of file qsgvivantevideomaterial.cpp.

References QSGMaterial::Blending, Q_FUNC_INFO, qDebug, QSGVivanteVideoMaterialShader, and QSGMaterial::setFlag().

Here is the call graph for this function:

~QSGVivanteVideoMaterial()

QSGVivanteVideoMaterial::~QSGVivanteVideoMaterial

(

)

Definition at line 43 of file qsgvivantevideomaterial.cpp.

Member Function Documentation

bind()

void QSGVivanteVideoMaterial::bind

(

)

Definition at line 83 of file qsgvivantevideomaterial.cpp.

References QOpenGLContext::currentContext(), QVideoFrame::isValid(), lock, Q_FUNC_INFO, qWarning, and vivanteMapping().

Here is the call graph for this function:

compare()

int QSGVivanteVideoMaterial::compare ( const QSGMaterial * other ) const

overridevirtual

Compares this material to other and returns 0 if they are equal; -1 if this material should sort before other and 1 if other should sort before.

The scene graph can reorder geometry nodes to minimize state changes. The compare function is called during the sorting process so that the materials can be sorted to minimize state changes in each call to QSGMaterialShader::updateState().

The this pointer and other is guaranteed to have the same type().

Reimplemented from QSGMaterial.

Definition at line 57 of file qsgvivantevideomaterial.cpp.

References other(), QSGMaterial::type(), and type().

Here is the call graph for this function:

createShader()

QSGMaterialShader * QSGVivanteVideoMaterial::createShader ( QSGRendererInterface::RenderMode renderMode ) const

overridevirtual

This function returns a new instance of a the QSGMaterialShader implementation used to render geometry for a specific implementation of QSGMaterial.

The function will be called only once for each combination of material type and renderMode and will be cached internally.

For most materials, the renderMode can be ignored. A few materials may need custom handling for specific render modes. For instance if the material implements antialiasing in a way that needs to account for perspective transformations when RenderMode3D is in use.

Implements QSGMaterial.

Definition at line 53 of file qsgvivantevideomaterial.cpp.

setCurrentFrame()

void QSGVivanteVideoMaterial::setCurrentFrame	(	const QVideoFrame &	frame,
		QSGVideoNode::FrameFlags	flags )

Definition at line 72 of file qsgvivantevideomaterial.cpp.

References frame, lock, Q_FUNC_INFO, and qDebug.

Referenced by QSGVivanteVideoNode::setCurrentFrame().

Here is the caller graph for this function:

setOpacity()

void QSGVivanteVideoMaterial::setOpacity ( float o )

inline

Definition at line 33 of file qsgvivantevideomaterial.h.

References o.

type()

QSGMaterialType * QSGVivanteVideoMaterial::type ( ) const

overridevirtual

This function is called by the scene graph to query an identifier that is unique to the QSGMaterialShader instantiated by createShader().

For many materials, the typical approach will be to return a pointer to a static, and so globally available, QSGMaterialType instance. The QSGMaterialType is an opaque object. Its purpose is only to serve as a type-safe, simple way to generate unique material identifiers.

QSGMaterialType *type() const override
{
    static QSGMaterialType type;
    return &type;
}

Implements QSGMaterial.

Definition at line 48 of file qsgvivantevideomaterial.cpp.

Referenced by compare().

Here is the caller graph for this function:

updateBlending()

void QSGVivanteVideoMaterial::updateBlending

(

)

Definition at line 68 of file qsgvivantevideomaterial.cpp.

References QSGMaterial::Blending, qFuzzyCompare(), and QSGMaterial::setFlag().

Here is the call graph for this function:

vivanteMapping()

GLuint QSGVivanteVideoMaterial::vivanteMapping

(

QVideoFrame

texIdVideoFramePair

)

Definition at line 115 of file qsgvivantevideomaterial.cpp.

References QVideoFrame::bits(), QVideoFrame::bytesPerLine(), QMap< Key, T >::contains(), QOpenGLContext::currentContext(), QVideoFrameFormat::Format_NV12, QVideoFrameFormat::Format_NV21, QVideoFrameFormat::Format_YUV420P, QVideoFrameFormat::Format_YV12, QSGVivanteVideoNode::getBytesForPixelFormat(), QSGVivanteVideoNode::getVideoFormat2GLFormatMap(), GL_CLAMP_TO_EDGE, GLuint, QVideoFrame::height(), QMap< Key, T >::insert(), QVideoFrame::pixelFormat(), Q_ASSERT, Q_FUNC_INFO, qDebug, qWarning, QVideoFrame::ReadOnly, QSGVivanteVideoMaterialShader::setUVScale(), QMap< Key, T >::value(), and QVideoFrame::width().

Referenced by bind().

Here is the call graph for this function:

Here is the caller graph for this function:

Friends And Related Symbol Documentation

QSGVivanteVideoMaterialShader

friend class QSGVivanteVideoMaterialShader

friend

Definition at line 57 of file qsgvivantevideomaterial.h.

Referenced by QSGVivanteVideoMaterial().

---

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

• qtmultimedia/src/plugins/videonode/imx6/qsgvivantevideomaterial.h (e9abd242abfbc368478f7be3e2923e7b100a9386)
• qtmultimedia/src/plugins/videonode/imx6/qsgvivantevideomaterial.cpp (e9abd242abfbc368478f7be3e2923e7b100a9386)