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| |
| #include "qgstreamervideoprobecontrol_p.h" |
| |
| #include "qgstutils_p.h" |
| #include <private/qgstvideobuffer_p.h> |
| |
| QGstreamerVideoProbeControl::QGstreamerVideoProbeControl(QObject *parent) |
| : QMediaVideoProbeControl(parent) |
| { |
| } |
| |
| QGstreamerVideoProbeControl::~QGstreamerVideoProbeControl() |
| { |
| } |
| |
| void QGstreamerVideoProbeControl::startFlushing() |
| { |
| m_flushing = true; |
| |
| { |
| QMutexLocker locker(&m_frameMutex); |
| m_pendingFrame = QVideoFrame(); |
| } |
| |
| // only emit flush if at least one frame was probed |
| if (m_frameProbed) |
| emit flush(); |
| } |
| |
| void QGstreamerVideoProbeControl::stopFlushing() |
| { |
| m_flushing = false; |
| } |
| |
| void QGstreamerVideoProbeControl::probeCaps(GstCaps *caps) |
| { |
| #if GST_CHECK_VERSION(1,0,0) |
| GstVideoInfo videoInfo; |
| QVideoSurfaceFormat format = QGstUtils::formatForCaps(caps, &videoInfo); |
| |
| QMutexLocker locker(&m_frameMutex); |
| m_videoInfo = videoInfo; |
| #else |
| int bytesPerLine = 0; |
| QVideoSurfaceFormat format = QGstUtils::formatForCaps(caps, &bytesPerLine); |
| |
| QMutexLocker locker(&m_frameMutex); |
| m_bytesPerLine = bytesPerLine; |
| #endif |
| m_format = format; |
| } |
| |
| bool QGstreamerVideoProbeControl::probeBuffer(GstBuffer *buffer) |
| { |
| QMutexLocker locker(&m_frameMutex); |
| |
| if (m_flushing || !m_format.isValid()) |
| return true; |
| |
| QVideoFrame frame( |
| #if GST_CHECK_VERSION(1,0,0) |
| new QGstVideoBuffer(buffer, m_videoInfo), |
| #else |
| new QGstVideoBuffer(buffer, m_bytesPerLine), |
| #endif |
| m_format.frameSize(), |
| m_format.pixelFormat()); |
| |
| QGstUtils::setFrameTimeStamps(&frame, buffer); |
| |
| m_frameProbed = true; |
| |
| if (!m_pendingFrame.isValid()) |
| QMetaObject::invokeMethod(this, "frameProbed", Qt::QueuedConnection); |
| m_pendingFrame = frame; |
| |
| return true; |
| } |
| |
| void QGstreamerVideoProbeControl::frameProbed() |
| { |
| QVideoFrame frame; |
| { |
| QMutexLocker locker(&m_frameMutex); |
| if (!m_pendingFrame.isValid()) |
| return; |
| frame = m_pendingFrame; |
| m_pendingFrame = QVideoFrame(); |
| } |
| emit videoFrameProbed(frame); |
| } |