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* added property CV_CAP_GSTREAMER_QUEUE_LENGTH

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* removed unnecessary memcpy
* fixed minor memory leak
This commit is contained in:
Nils Hasler 2011-04-23 07:27:04 +00:00
parent 6e15238dd9
commit ee0c16e43e
2 changed files with 48 additions and 14 deletions
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7
modules/highgui/include/opencv2/highgui/highgui_c.h
View File

@ -358,14 +358,17 @@ enum
CV_CAP_OPENNI_IMAGE_GENERATOR = 1 << 31,
CV_CAP_OPENNI_GENERATORS_MASK = 1 << 31,
// Properties of cameras avalible through OpenNI interfaces
// Properties of cameras available through OpenNI interfaces
CV_CAP_PROP_OPENNI_OUTPUT_MODE = 100,
CV_CAP_PROP_OPENNI_FRAME_MAX_DEPTH = 101, // in mm
CV_CAP_PROP_OPENNI_BASELINE = 102, // in mm
CV_CAP_PROP_OPENNI_FOCAL_LENGTH = 103, // in pixels
CV_CAP_OPENNI_IMAGE_GENERATOR_OUTPUT_MODE = CV_CAP_OPENNI_IMAGE_GENERATOR + CV_CAP_PROP_OPENNI_OUTPUT_MODE,
CV_CAP_OPENNI_DEPTH_GENERATOR_BASELINE = CV_CAP_OPENNI_DEPTH_GENERATOR + CV_CAP_PROP_OPENNI_BASELINE,
CV_CAP_OPENNI_DEPTH_GENERATOR_FOCAL_LENGTH = CV_CAP_OPENNI_DEPTH_GENERATOR + CV_CAP_PROP_OPENNI_FOCAL_LENGTH
CV_CAP_OPENNI_DEPTH_GENERATOR_FOCAL_LENGTH = CV_CAP_OPENNI_DEPTH_GENERATOR + CV_CAP_PROP_OPENNI_FOCAL_LENGTH,
// Properties of cameras available through GStreamer interface
CV_CAP_GSTREAMER_QUEUE_LENGTH = 200 // default is 1
};
enum

55
modules/highgui/src/cap_gstreamer.cpp
View File

@ -104,6 +104,7 @@ protected:
GstCaps *caps;
IplImage *frame;
};
void CvCapture_GStreamer::init()
{
pipeline=0;
@ -185,7 +186,9 @@ bool CvCapture_GStreamer::grabFrame()
else
#endif
{
// printf("pulling buffer\n");
buffer = gst_app_sink_pull_buffer(GST_APP_SINK(sink));
// printf("pulled buffer %p\n", GST_BUFFER_DATA(buffer));
}
if(!buffer)
return false;
@ -201,6 +204,8 @@ IplImage * CvCapture_GStreamer::retrieveFrame(int)
if(!buffer)
return false;
// printf("retrieving buffer %p\n", GST_BUFFER_DATA(buffer));
if(!frame) {
gint height, width;
GstCaps *buff_caps = gst_buffer_get_caps(buffer);
@ -208,17 +213,18 @@ IplImage * CvCapture_GStreamer::retrieveFrame(int)
GstStructure* structure = gst_caps_get_structure(buff_caps, 0);
if(!gst_structure_get_int(structure, "width", &width) ||
!gst_structure_get_int(structure, "height", &height))
!gst_structure_get_int(structure, "height", &height))
return false;
frame = cvCreateImage(cvSize(width, height), IPL_DEPTH_8U, 3);
frame = cvCreateImageHeader(cvSize(width, height), IPL_DEPTH_8U, 3);
gst_caps_unref(buff_caps);
}
memcpy (frame->imageData, GST_BUFFER_DATA(buffer), GST_BUFFER_SIZE (buffer));
frame->imageData = (char *)GST_BUFFER_DATA(buffer);
//memcpy (frame->imageData, GST_BUFFER_DATA(buffer), GST_BUFFER_SIZE (buffer));
//gst_data_copy_into (frame->imageData,GST_BUFFER_DATA(buffer));
gst_buffer_unref(buffer);
buffer = 0;
//gst_buffer_unref(buffer);
//buffer = 0;
return frame;
}
@ -306,6 +312,14 @@ void CvCapture_GStreamer::newPad(GstElement *uridecodebin,
gst_object_unref (sinkpad);
}
// static int buffernum = 0;
// static GstFlowReturn newbuffer(GstAppSink *sink, gpointer data)
// {
// printf("new buffer %d\n", buffernum);
// buffernum++;
// return GST_FLOW_OK;
// }
bool CvCapture_GStreamer::open( int type, const char* filename )
{
close();
@ -384,6 +398,8 @@ bool CvCapture_GStreamer::open( int type, const char* filename )
if (stream) {
gst_app_sink_set_drop (GST_APP_SINK(sink),true);
}
// GstAppSinkCallbacks cb = {0, 0, newbuffer, 0};
// gst_app_sink_set_callbacks(GST_APP_SINK(sink), &cb, 0, 0);
#else
sink = gst_element_factory_make("opencv-appsink", NULL);
#endif
@ -501,11 +517,11 @@ void CvVideoWriter_GStreamer::init()
}
void CvVideoWriter_GStreamer::close()
{
if (pipeline) {
gst_app_src_end_of_stream(GST_APP_SRC(source));
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (GST_OBJECT (pipeline));
}
if (pipeline) {
gst_app_src_end_of_stream(GST_APP_SRC(source));
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (GST_OBJECT (pipeline));
}
}
bool CvVideoWriter_GStreamer::open( const char * filename, int fourcc,
double fps, CvSize frameSize, bool is_color )
@ -637,6 +653,10 @@ void CvCapture_GStreamer::close()
}
if(buffer)
gst_buffer_unref(buffer);
if(frame) {
frame->imageData = 0;
cvReleaseImage(&frame);
}
}
double CvCapture_GStreamer::getProperty( int propId )
@ -653,14 +673,14 @@ double CvCapture_GStreamer::getProperty( int propId )
switch(propId) {
case CV_CAP_PROP_POS_MSEC:
format = GST_FORMAT_TIME;
if(!gst_element_query_position(pipeline, &format, &value)) {
if(!gst_element_query_position(sink, &format, &value)) {
CV_WARN("GStreamer: unable to query position of stream");
return false;
}
return value * 1e-6; // nano seconds to milli seconds
case CV_CAP_PROP_POS_FRAMES:
format = GST_FORMAT_DEFAULT;
if(!gst_element_query_position(pipeline, &format, &value)) {
if(!gst_element_query_position(sink, &format, &value)) {
CV_WARN("GStreamer: unable to query position of stream");
return false;
}
@ -693,6 +713,12 @@ double CvCapture_GStreamer::getProperty( int propId )
case CV_CAP_PROP_GAIN:
case CV_CAP_PROP_CONVERT_RGB:
break;
case CV_CAP_GSTREAMER_QUEUE_LENGTH:
if(!sink) {
CV_WARN("GStreamer: there is no sink yet");
return false;
}
return gst_app_sink_get_max_buffers(GST_APP_SINK(sink));
default:
CV_WARN("GStreamer: unhandled property");
break;
@ -772,6 +798,11 @@ bool CvCapture_GStreamer::setProperty( int propId, double value )
case CV_CAP_PROP_GAIN:
case CV_CAP_PROP_CONVERT_RGB:
break;
case CV_CAP_GSTREAMER_QUEUE_LENGTH:
if(!sink)
break;
gst_app_sink_set_max_buffers(GST_APP_SINK(sink), (guint) value);
break;
default:
CV_WARN("GStreamer: unhandled property");
}