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Merge pull request #18499 from RidgeRun:optional-gstreamer-mainloop

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This commit is contained in:
Alexander Alekhin 2020-11-13 21:07:29 +00:00
commit 389495f76a
1 changed files with 21 additions and 0 deletions
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21
modules/videoio/src/cap_gstreamer.cpp
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@ -54,6 +54,7 @@
#include <iostream>
#include <string.h>
#include <thread>
#include <gst/gst.h>
#include <gst/gstbuffer.h>
@ -107,6 +108,7 @@ template<> inline void GSafePtr_release<GstBuffer>(GstBuffer** pPtr) { if (pPtr)
template<> inline void GSafePtr_release<GstSample>(GstSample** pPtr) { if (pPtr) { gst_sample_unref(*pPtr); *pPtr = NULL; } }
template<> inline void GSafePtr_release<GstBus>(GstBus** pPtr) { if (pPtr) { gst_object_unref(G_OBJECT(*pPtr)); *pPtr = NULL; } }
template<> inline void GSafePtr_release<GstMessage>(GstMessage** pPtr) { if (pPtr) { gst_message_unref(*pPtr); *pPtr = NULL; } }
template<> inline void GSafePtr_release<GMainLoop>(GMainLoop** pPtr) { if (pPtr) { g_main_loop_unref(*pPtr); *pPtr = NULL; } }
template<> inline void GSafePtr_release<GstEncodingVideoProfile>(GstEncodingVideoProfile** pPtr) { if (pPtr) { gst_encoding_profile_unref(*pPtr); *pPtr = NULL; } }
template<> inline void GSafePtr_release<GstEncodingContainerProfile>(GstEncodingContainerProfile** pPtr) { if (pPtr) { gst_object_unref(G_OBJECT(*pPtr)); *pPtr = NULL; } }
@ -194,10 +196,15 @@ public:
private:
bool isFailed;
bool call_deinit;
bool start_loop;
GSafePtr<GMainLoop> loop;
std::thread thread;
gst_initializer() :
isFailed(false)
{
call_deinit = utils::getConfigurationParameterBool("OPENCV_VIDEOIO_GSTREAMER_CALL_DEINIT", false);
start_loop = utils::getConfigurationParameterBool("OPENCV_VIDEOIO_GSTREAMER_START_MAINLOOP", false);
GSafePtr<GError> err;
gst_init_check(NULL, NULL, err.getRef());
@ -215,6 +222,14 @@ private:
isFailed = true;
return;
}
if (start_loop)
{
loop.attach(g_main_loop_new (NULL, FALSE));
thread = std::thread([this](){
g_main_loop_run (loop);
});
}
}
~gst_initializer()
{
@ -223,6 +238,12 @@ private:
// Debug leaks: GST_LEAKS_TRACER_STACK_TRACE=1 GST_DEBUG="GST_TRACER:7" GST_TRACERS="leaks"
gst_deinit();
}
if (start_loop)
{
g_main_loop_quit(loop);
thread.join();
}
}
};