void QtVideoSinkDelegate::paint(QPainter *painter, const QRectF & targetArea)
{
GST_TRACE_OBJECT(m_sink, "paint called");
#ifndef GST_QT_VIDEO_SINK_NO_OPENGL
if (m_glContext) {
Q_ASSERT_X(m_glContext == QGLContext::currentContext(),
"qtvideosink - paint",
"Please use a QPainter that is initialized to paint on the "
"GL surface that has the same context as the one given on the glcontext property"
);
}
#endif
if (!m_buffer) {
painter->fillRect(targetArea, Qt::black);
} else {
BufferFormat format = m_formatDirty ?
BufferFormat::fromCaps(GST_BUFFER_CAPS(m_buffer)) : m_bufferFormat;
//recalculate the video area if needed
QReadLocker forceAspectRatioLocker(&m_forceAspectRatioLock);
if (targetArea != m_areas.targetArea
|| (m_formatDirty && (format.frameSize() != m_bufferFormat.frameSize()
|| format.pixelAspectRatio() != m_bufferFormat.pixelAspectRatio()))
|| m_forceAspectRatioDirty)
{
m_forceAspectRatioDirty = false;
if (m_forceAspectRatio) {
QReadLocker pixelAspectRatioLocker(&m_pixelAspectRatioLock);
m_areas.calculate(targetArea, format.frameSize(),
format.pixelAspectRatio(), m_pixelAspectRatio);
} else {
m_areas.targetArea = targetArea;
m_areas.videoArea = targetArea;
m_areas.blackArea1 = m_areas.blackArea2 = QRectF();
}
GST_LOG_OBJECT(m_sink,
"Recalculated paint areas: "
"Frame size: " QSIZE_FORMAT ", "
"target area: " QRECTF_FORMAT ", "
"video area: " QRECTF_FORMAT ", "
"black1: " QRECTF_FORMAT ", "
"black2: " QRECTF_FORMAT,
QSIZE_FORMAT_ARGS(format.frameSize()),
QRECTF_FORMAT_ARGS(m_areas.targetArea),
QRECTF_FORMAT_ARGS(m_areas.videoArea),
QRECTF_FORMAT_ARGS(m_areas.blackArea1),
QRECTF_FORMAT_ARGS(m_areas.blackArea2)
);
}
forceAspectRatioLocker.unlock();
if (m_formatDirty /* || m_clipRectDirty */) {
//TODO add properties for modifying clipRect
m_clipRect = QRectF(QPointF(0,0), format.frameSize());
}
//if either pixelFormat or frameSize have changed, we need to reset the painter
//and/or change painter, in case the current one does not handle the requested format
if ((m_formatDirty && (format.videoFormat() != m_bufferFormat.videoFormat()
|| format.colorMatrix() != m_bufferFormat.colorMatrix()
|| format.frameSize() != m_bufferFormat.frameSize()))
|| !m_painter)
{
changePainter(format);
m_bufferFormat = format;
m_formatDirty = false;
//make sure to update the colors after changing painter
m_colorsDirty = true;
}
if (G_LIKELY(m_painter)) {
QReadLocker colorsLocker(&m_colorsLock);
if (m_colorsDirty) {
m_painter->updateColors(m_brightness, m_contrast, m_hue, m_saturation);
m_colorsDirty = false;
}
colorsLocker.unlock();
m_painter->paint(m_buffer->data, m_bufferFormat, m_clipRect, painter, m_areas);
}
}
}
void QtVideoSinkDelegate::paint(QPainter *painter, const QRectF & targetArea)
{
GST_TRACE_OBJECT(m_sink, "paint called");
#ifndef GST_QT_VIDEO_SINK_NO_OPENGL
if (m_glContext) {
Q_ASSERT_X(m_glContext == QGLContext::currentContext(),
"qtvideosink - paint",
"Please use a QPainter that is initialized to paint on the "
"GL surface that has the same context as the one given on the glcontext property"
);
}
#endif
if (!m_buffer) {
painter->fillRect(targetArea, Qt::black);
} else {
//recalculate the video area if needed
QReadLocker forceAspectRatioLocker(&m_forceAspectRatioLock);
if (targetArea != m_areas.targetArea || m_formatDirty
|| m_forceAspectRatioDirty)
{
m_forceAspectRatioDirty = false;
QReadLocker pixelAspectRatioLocker(&m_pixelAspectRatioLock);
Qt::AspectRatioMode aspectRatioMode = m_forceAspectRatio ?
Qt::KeepAspectRatio : Qt::IgnoreAspectRatio;
m_areas.calculate(targetArea, m_bufferFormat.frameSize(),
m_bufferFormat.pixelAspectRatio(), m_pixelAspectRatio,
aspectRatioMode);
pixelAspectRatioLocker.unlock();
GST_LOG_OBJECT(m_sink,
"Recalculated paint areas: "
"Frame size: " QSIZE_FORMAT ", "
"target area: " QRECTF_FORMAT ", "
"video area: " QRECTF_FORMAT ", "
"black1: " QRECTF_FORMAT ", "
"black2: " QRECTF_FORMAT,
QSIZE_FORMAT_ARGS(m_bufferFormat.frameSize()),
QRECTF_FORMAT_ARGS(m_areas.targetArea),
QRECTF_FORMAT_ARGS(m_areas.videoArea),
QRECTF_FORMAT_ARGS(m_areas.blackArea1),
QRECTF_FORMAT_ARGS(m_areas.blackArea2)
);
}
forceAspectRatioLocker.unlock();
//if either pixelFormat or frameSize have changed, we need to reset the painter
//and/or change painter, in case the current one does not handle the requested format
if ((m_formatDirty) || !m_painter)
{
changePainter(m_bufferFormat);
m_formatDirty = false;
//make sure to update the colors after changing painter
m_colorsDirty = true;
}
if (G_LIKELY(m_painter)) {
QReadLocker colorsLocker(&m_colorsLock);
if (m_colorsDirty) {
m_painter->updateColors(m_brightness, m_contrast, m_hue, m_saturation);
m_colorsDirty = false;
}
colorsLocker.unlock();
GstMapInfo mem_info;
if (gst_buffer_map(m_buffer, &mem_info, GST_MAP_READ)) {
m_painter->paint(mem_info.data, m_bufferFormat, painter, m_areas);
gst_buffer_unmap(m_buffer, &mem_info);
}
}
}
}