Member Function Documentation

QWaylandBufferRef::QWaylandBufferRef()

Constructs a null buffer ref.

QWaylandBufferRef::QWaylandBufferRef(const QWaylandBufferRef &ref)

Creates a new reference to the buffer referenced by ref.

QWaylandBufferRef::~QWaylandBufferRef()

Dereferences the buffer.

BufferFormatEgl QWaylandBufferRef::bufferFormatEgl() const

BufferType QWaylandBufferRef::bufferType() const

bool QWaylandBufferRef::hasBuffer() const

Returns true if this QWaylandBufferRef references a buffer. Otherwise returns false.

See also isNull() and hasContent().

bool QWaylandBufferRef::hasContent() const

Returns true if this QWaylandBufferRef references a buffer that has content. Otherwise returns false.

See also isNull() and hasBuffer().

QImage QWaylandBufferRef::image() const

Returns an image with the contents of the buffer.

bool QWaylandBufferRef::isDestroyed() const

Returns true if this QWaylandBufferRef references a buffer that has been destroyed. Otherwise returns false.

bool QWaylandBufferRef::isNull() const

Returns true if this QWaylandBufferRef does not reference a buffer. Otherwise returns false.

See also hasBuffer() and hasContent().

bool QWaylandBufferRef::isSharedMemory() const

Returns true if the buffer is a shared memory buffer. Otherwise returns false.

quintptr QWaylandBufferRef::lockNativeBuffer()

Returns the native handle for this buffer, and marks it as locked so it will not be released until unlockNativeBuffer() is called.

Returns 0 if there is no native handle for this buffer, or if the lock was unsuccessful.

QWaylandSurface::Origin QWaylandBufferRef::origin() const

Returns the origin of the buffer. If the buffer referenced is null, QWaylandSurface::OriginBottomLeft is returned.

QSize QWaylandBufferRef::size() const

Returns the size of the buffer. If the buffer referenced is null, an invalid QSize() is returned.

QOpenGLTexture *QWaylandBufferRef::toOpenGLTexture(int plane = 0) const

Returns an OpenGL texture for the buffer. plane is the index for multi-plane formats, such as YUV.

The returned texture is owned by the buffer. The texture is only valid for as long as the buffer reference exists. The caller of this function must not delete the texture, and must keep a reference to the buffer for as long as the texture is being used.

Returns nullptr if there is no valid buffer, or if no texture can be created.

void QWaylandBufferRef::unlockNativeBuffer(quintptr handle)

Marks the native buffer as no longer in use. handle must correspond to the value returned by a previous call to lockNativeBuffer().

bool QWaylandBufferRef::operator!=(const QWaylandBufferRef &ref)

Returns false if this QWaylandBufferRef references the same buffer as ref. Otherwise returns true.

QWaylandBufferRef &QWaylandBufferRef::operator=(const QWaylandBufferRef &ref)

Assigns ref to this buffer and adds a reference to it. The previously referenced buffer is dereferenced.

bool QWaylandBufferRef::operator==(const QWaylandBufferRef &ref)

Returns true if this QWaylandBufferRef references the same buffer as ref. Otherwise returns false.