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authorNicolas Dufresne <nicolas.dufresne@collabora.com>2024-03-05 10:30:58 -0500
committerKieran Bingham <kieran.bingham@ideasonboard.com>2024-07-25 11:44:05 +0100
commitd267fd6d89be8dd9274b058f05230712cf9773b8 (patch)
treee1d626ad4db18b048458e867937dd278f27c792b /test/gstreamer/gstreamer_memory_lifetime_test.cpp
parenta61241eb8b9ff583d8c04773927f5460b3e83a01 (diff)
test: gstreamer: Test memory lifetime
Test that everything works fine if a buffer outlives the pipeline. [Kieran: Update test path with comments and clarify test case] Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Diffstat (limited to 'test/gstreamer/gstreamer_memory_lifetime_test.cpp')
-rw-r--r--test/gstreamer/gstreamer_memory_lifetime_test.cpp90
1 files changed, 90 insertions, 0 deletions
diff --git a/test/gstreamer/gstreamer_memory_lifetime_test.cpp b/test/gstreamer/gstreamer_memory_lifetime_test.cpp
new file mode 100644
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+++ b/test/gstreamer/gstreamer_memory_lifetime_test.cpp
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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)