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Changes to QMediaPlayer GStreamer backend to allow setPosition before pause

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Do not display prerolled frames in stopped state.
Instead store prerolled frame and display it only after switching to
pause or playback state.
Added new unit test with a sample video file to check this functionality.

Change-Id: I3fd159a199b65ca10fdf9843af5675c5ae9dad05
Reviewed-by: Michael Goddard <michael.goddard@nokia.com>
This commit is contained in:
Lev Zelenskiy
2012-02-06 13:52:56 +10:00
committed by Qt by Nokia
parent 7415e4c879
commit 39c96db2b3
5 changed files with 199 additions and 6 deletions
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7
src/multimedia/gsttools_headers/qvideosurfacegstsink_p.h
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@@ -97,6 +97,9 @@ public:
GstFlowReturn render(GstBuffer *buffer);
GstBuffer *lastPrerolledBuffer() const { return m_lastPrerolledBuffer; }
void setLastPrerolledBuffer(GstBuffer *lastPrerolledBuffer); // set prerolledBuffer to 0 to discard prerolled buffer
private slots:
void queuedStart();
void queuedStop();
@@ -118,6 +121,8 @@ private:
QVideoSurfaceFormat m_format;
QVideoFrame m_frame;
GstFlowReturn m_renderReturn;
// this pointer is not 0 when there is a prerolled buffer waiting to be displayed
GstBuffer *m_lastPrerolledBuffer;
int m_bytesPerLine;
bool m_started;
bool m_startCanceled;
@@ -131,6 +136,8 @@ public:
static QVideoSurfaceGstSink *createSink(QAbstractVideoSurface *surface);
static QVideoSurfaceFormat formatForCaps(GstCaps *caps, int *bytesPerLine = 0);
static void handleShowPrerollChange(GObject *o, GParamSpec *p, gpointer d);
private:
static GType get_type();
static void class_init(gpointer g_class, gpointer class_data);