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highgui: fix segfault on CvCapture_GStreamer::retrieveFrame

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CvCapture_GStreamer::retrieveFrame assumes that RGB videos are 24BPP.
This is not necesarily the case, unless we explicitly tell GStreamer
that we want 24BPP RGB streams.

Adding bpp=(int)24 to the appsink caps.
This commit is contained in:
Luis Zarrabeitia 2014-05-11 19:00:14 -04:00
parent c74fed1fcf
commit bb5a22c504
1 changed files with 1 additions and 0 deletions
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modules/highgui/src/cap_gstreamer.cpp
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@ -400,6 +400,7 @@ bool CvCapture_GStreamer::open( int type, const char* filename )
gst_app_sink_set_max_buffers (GST_APP_SINK(sink), 1);
gst_app_sink_set_drop (GST_APP_SINK(sink), stream);
caps = gst_caps_new_simple("video/x-raw-rgb",
"bpp", G_TYPE_INT, 24,
"red_mask", G_TYPE_INT, 0x0000FF,
"green_mask", G_TYPE_INT, 0x00FF00,
"blue_mask", G_TYPE_INT, 0xFF0000,