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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2024, Nicolas Dufresne
*
* gstreamer_memory_lifetime_test.cpp - GStreamer memory lifetime test
*/
#include <iostream>
#include <unistd.h>
#include <gst/app/app.h>
#include <gst/gst.h>
#include "gstreamer_test.h"
#include "test.h"
using namespace std;
class GstreamerMemoryLifetimeTest : public GstreamerTest, public Test
{
public:
GstreamerMemoryLifetimeTest()
: GstreamerTest()
{
}
protected:
int init() override
{
if (status_ != TestPass)
return status_;
appsink_ = gst_element_factory_make("appsink", nullptr);
if (!appsink_) {
g_printerr("Your installation is missing 'appsink'\n");
return TestFail;
}
g_object_ref_sink(appsink_);
return createPipeline();
}
int run() override
{
/* Build the pipeline */
gst_bin_add_many(GST_BIN(pipeline_), libcameraSrc_, appsink_, nullptr);
if (gst_element_link(libcameraSrc_, appsink_) != TRUE) {
g_printerr("Elements could not be linked.\n");
return TestFail;
}
if (startPipeline() != TestPass)
return TestFail;
sample_ = gst_app_sink_try_pull_sample(GST_APP_SINK(appsink_), GST_SECOND * 5);
if (!sample_) {
/* Failed to obtain a sample. Abort the test */
gst_element_set_state(pipeline_, GST_STATE_NULL);
return TestFail;
}
/*
* Keep the sample referenced and set the pipeline state to
* NULL. This causes the libcamerasrc element to synchronously
* release resources it holds. The sample will be released
* later in cleanup().
*
* The test case verifies that libcamerasrc keeps alive long
* enough all the resources that are needed until memory
* allocated for frames gets freed. We return TestPass at this
* stage, and any use-after-free will be caught by the test
* crashing in cleanup().
*/
gst_element_set_state(pipeline_, GST_STATE_NULL);
return TestPass;
}
void cleanup() override
{
g_clear_pointer(&sample_, gst_sample_unref);
g_clear_object(&appsink_);
}
private:
GstElement *appsink_;
GstSample *sample_;
};
TEST_REGISTER(GstreamerMemoryLifetimeTest)
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