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Fixed several issues found by static analysis, GStreamer backend

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This commit is contained in:
Maksim Shabunin 2018-07-27 18:41:39 +03:00
parent e031bada7d
commit dd8e990451
1 changed files with 13 additions and 24 deletions
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37
modules/videoio/src/cap_gstreamer.cpp
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@ -1224,7 +1224,11 @@ Ptr<IVideoCapture> cv::createGStreamerCapture(int index)
class CvVideoWriter_GStreamer : public CvVideoWriter
{
public:
CvVideoWriter_GStreamer() { init(); }
CvVideoWriter_GStreamer()
: pipeline(0), source(0), encodebin(0), file(0), buffer(0), input_pix_fmt(0),
num_frames(0), framerate(0)
{
}
virtual ~CvVideoWriter_GStreamer() CV_OVERRIDE { close(); }
virtual bool open( const char* filename, int fourcc,
@ -1232,7 +1236,6 @@ public:
virtual void close();
virtual bool writeFrame( const IplImage* image ) CV_OVERRIDE;
protected:
void init();
const char* filenameToMimetype(const char* filename);
GstElement* pipeline;
GstElement* source;
@ -1245,22 +1248,6 @@ protected:
double framerate;
};
/*!
* \brief CvVideoWriter_GStreamer::init
* initialise all variables
*/
void CvVideoWriter_GStreamer::init()
{
pipeline = NULL;
source = NULL;
encodebin = NULL;
file = NULL;
buffer = NULL;
num_frames = 0;
framerate = 0;
}
/*!
* \brief CvVideoWriter_GStreamer::close
* ends the pipeline by sending EOS and destroys the pipeline and all
@ -1282,17 +1269,19 @@ void CvVideoWriter_GStreamer::close()
//wait for EOS to trickle down the pipeline. This will let all elements finish properly
GstBus* bus = gst_element_get_bus(pipeline);
GstMessage *msg = gst_bus_timed_pop_filtered(bus, GST_CLOCK_TIME_NONE, (GstMessageType)(GST_MESSAGE_ERROR | GST_MESSAGE_EOS));
if (GST_MESSAGE_TYPE(msg) == GST_MESSAGE_ERROR)
if (!msg || GST_MESSAGE_TYPE(msg) == GST_MESSAGE_ERROR)
{
CV_WARN("Error during VideoWriter finalization\n");
if(msg != NULL)
{
gst_message_unref(msg);
g_object_unref(G_OBJECT(bus));
}
return;
}
if(msg != NULL)
{
gst_message_unref(msg);
g_object_unref(G_OBJECT(bus));
}
gst_message_unref(msg);
g_object_unref(G_OBJECT(bus));
status = gst_element_set_state (pipeline, GST_STATE_NULL);
if (status == GST_STATE_CHANGE_ASYNC)