test: gstreamer: Factor out code into a base class
A lot of code used in the single stream test is boiler plate and common across every gstreamer test. Factor out this code into a base class called GstreamerTest. Also update the gstreamer_single_stream_test to use the GstreamerTest base class. Signed-off-by: Vedant Paranjape <vedantparanjape160201@gmail.com> Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
This commit is contained in:
Vedant Paranjape
Paul Elder
parent
a25710428e
commit
39c2d5dc95
4 changed files with 219 additions and 122 deletions
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@ -14,104 +14,48 @@
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#include <gst/gst.h>
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#include "gstreamer_test.h"
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#include "test.h"
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using namespace std;
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extern "C" {
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const char *__asan_default_options()
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class GstreamerSingleStreamTest : public GstreamerTest, public Test
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{
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public:
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GstreamerSingleStreamTest()
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: GstreamerTest()
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{
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/*
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* Disable leak detection due to a known global variable initialization
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* leak in glib's g_quark_init(). This should ideally be handled by
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* using a suppression file instead of disabling leak detection.
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*/
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return "detect_leaks=false";
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}
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}
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class GstreamerSingleStreamTest : public Test
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{
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protected:
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int init() override
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{
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/*
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* GStreamer by default spawns a process to run the
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* gst-plugin-scanner helper. If libcamera is compiled with ASan
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* enabled, and as GStreamer is most likely not, this causes the
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* ASan link order check to fail when gst-plugin-scanner
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* dlopen()s the plugin as many libraries will have already been
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* loaded by then. Fix this issue by disabling spawning of a
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* child helper process when scanning the build directory for
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* plugins.
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*/
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gst_registry_fork_set_enabled(false);
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if (status_ != TestPass)
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return status_;
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/* Initialize GStreamer */
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g_autoptr(GError) errInit = NULL;
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if (!gst_init_check(nullptr, nullptr, &errInit)) {
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g_printerr("Could not initialize GStreamer: %s\n",
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errInit ? errInit->message : "unknown error");
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g_autoptr(GstElement) convert0 = gst_element_factory_make("videoconvert", "convert0");
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g_autoptr(GstElement) sink0 = gst_element_factory_make("fakesink", "sink0");
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g_object_ref_sink(convert0);
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g_object_ref_sink(sink0);
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if (!convert0 || !sink0) {
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g_printerr("Not all elements could be created. %p.%p\n",
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convert0, sink0);
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return TestFail;
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}
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/*
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* Remove the system libcamera plugin, if any, and add the
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* plugin from the build directory.
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*/
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GstRegistry *registry = gst_registry_get();
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GstPlugin *plugin = gst_registry_lookup(registry, "libgstlibcamera.so");
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if (plugin) {
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gst_registry_remove_plugin(registry, plugin);
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gst_object_unref(plugin);
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}
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convert0_ = reinterpret_cast<GstElement *>(g_steal_pointer(&convert0));
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sink0_ = reinterpret_cast<GstElement *>(g_steal_pointer(&sink0));
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std::string path = libcamera::utils::libcameraBuildPath()
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+ "src/gstreamer";
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if (!gst_registry_scan_path(registry, path.c_str())) {
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g_printerr("Failed to add plugin to registry\n");
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gst_deinit();
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if (createPipeline() != TestPass)
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return TestFail;
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}
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/* Create the elements */
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libcameraSrc_ = gst_element_factory_make("libcamerasrc", "libcamera");
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convert0_ = gst_element_factory_make("videoconvert", "convert0");
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sink0_ = gst_element_factory_make("fakesink", "sink0");
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/* Create the empty pipeline_ */
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pipeline_ = gst_pipeline_new("test-pipeline");
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if (!pipeline_ || !convert0_ || !sink0_ || !libcameraSrc_) {
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g_printerr("Not all elements could be created. %p.%p.%p.%p\n",
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pipeline_, convert0_, sink0_, libcameraSrc_);
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if (pipeline_)
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gst_object_unref(pipeline_);
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if (convert0_)
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gst_object_unref(convert0_);
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if (sink0_)
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gst_object_unref(sink0_);
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if (libcameraSrc_)
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gst_object_unref(libcameraSrc_);
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gst_deinit();
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return TestFail;
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}
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return TestPass;
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}
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void cleanup() override
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{
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gst_object_unref(pipeline_);
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gst_deinit();
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}
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int run() override
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{
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GstStateChangeReturn ret;
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/* Build the pipeline */
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gst_bin_add_many(GST_BIN(pipeline_), libcameraSrc_, convert0_, sink0_, NULL);
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if (gst_element_link_many(libcameraSrc_, convert0_, sink0_, NULL) != TRUE) {
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@ -119,57 +63,16 @@ protected:
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return TestFail;
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}
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/* Start playing */
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ret = gst_element_set_state(pipeline_, GST_STATE_PLAYING);
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if (ret == GST_STATE_CHANGE_FAILURE) {
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g_printerr("Unable to set the pipeline to the playing state.\n");
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if (startPipeline() != TestPass)
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return TestFail;
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}
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/* Wait until error or EOS or timeout after 2 seconds */
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constexpr GstMessageType msgType =
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static_cast<GstMessageType>(GST_MESSAGE_ERROR | GST_MESSAGE_EOS);
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constexpr GstClockTime timeout = 2 * GST_SECOND;
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if (processEvent() != TestPass)
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return TestFail;
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g_autoptr(GstBus) bus = gst_element_get_bus(pipeline_);
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g_autoptr(GstMessage) msg = gst_bus_timed_pop_filtered(bus, timeout, msgType);
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gst_element_set_state(pipeline_, GST_STATE_NULL);
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/* Parse error message */
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if (msg == NULL)
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return TestPass;
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switch (GST_MESSAGE_TYPE(msg)) {
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case GST_MESSAGE_ERROR:
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gstreamer_print_error(msg);
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break;
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case GST_MESSAGE_EOS:
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g_print("End-Of-Stream reached.\n");
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break;
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default:
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g_printerr("Unexpected message received.\n");
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break;
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}
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return TestFail;
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}
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private:
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void gstreamer_print_error(GstMessage *msg)
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{
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g_autoptr(GError) err = NULL;
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g_autofree gchar *debug_info = NULL;
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gst_message_parse_error(msg, &err, &debug_info);
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g_printerr("Error received from element %s: %s\n",
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GST_OBJECT_NAME(msg->src), err->message);
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g_printerr("Debugging information: %s\n",
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debug_info ? debug_info : "none");
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}
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GstElement *pipeline_;
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GstElement *libcameraSrc_;
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GstElement *convert0_;
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GstElement *sink0_;
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};
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155
test/gstreamer/gstreamer_test.cpp
Normal file
155
test/gstreamer/gstreamer_test.cpp
Normal file
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@ -0,0 +1,155 @@
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2021, Vedant Paranjape
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*
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* libcamera Gstreamer element API tests
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*/
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#include "gstreamer_test.h"
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#include "test.h"
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using namespace std;
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extern "C" {
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const char *__asan_default_options()
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{
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/*
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* Disable leak detection due to a known global variable initialization
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* leak in glib's g_quark_init(). This should ideally be handled by
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* using a suppression file instead of disabling leak detection.
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*/
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return "detect_leaks=false";
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}
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}
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GstreamerTest::GstreamerTest()
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{
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/*
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* GStreamer by default spawns a process to run the
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* gst-plugin-scanner helper. If libcamera is compiled with ASan
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* enabled, and as GStreamer is most likely not, this causes the
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* ASan link order check to fail when gst-plugin-scanner
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* dlopen()s the plugin as many libraries will have already been
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* loaded by then. Fix this issue by disabling spawning of a
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* child helper process when scanning the build directory for
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* plugins.
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*/
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gst_registry_fork_set_enabled(false);
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/* Initialize GStreamer */
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g_autoptr(GError) errInit = NULL;
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if (!gst_init_check(nullptr, nullptr, &errInit)) {
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g_printerr("Could not initialize GStreamer: %s\n",
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errInit ? errInit->message : "unknown error");
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status_ = TestFail;
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return;
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}
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/*
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* Remove the system libcamera plugin, if any, and add the
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* plugin from the build directory.
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*/
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GstRegistry *registry = gst_registry_get();
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g_autoptr(GstPlugin) plugin = gst_registry_lookup(registry, "libgstlibcamera.so");
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if (plugin)
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gst_registry_remove_plugin(registry, plugin);
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std::string path = libcamera::utils::libcameraBuildPath() + "src/gstreamer";
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if (!gst_registry_scan_path(registry, path.c_str())) {
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g_printerr("Failed to add plugin to registry\n");
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status_ = TestFail;
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return;
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}
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status_ = TestPass;
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}
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GstreamerTest::~GstreamerTest()
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{
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if (libcameraSrc_ &&
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!gst_object_has_as_ancestor(GST_OBJECT(libcameraSrc_),
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GST_OBJECT(pipeline_)))
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gst_object_unref(libcameraSrc_);
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if (pipeline_)
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gst_object_unref(pipeline_);
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gst_deinit();
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}
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int GstreamerTest::createPipeline()
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{
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g_autoptr(GstElement) libcameraSrc = gst_element_factory_make("libcamerasrc", "libcamera");
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pipeline_ = gst_pipeline_new("test-pipeline");
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g_object_ref_sink(libcameraSrc);
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if (!libcameraSrc || !pipeline_) {
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g_printerr("Unable to create create pipeline %p.%p\n",
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libcameraSrc, pipeline_);
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return TestFail;
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}
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libcameraSrc_ = reinterpret_cast<GstElement *>(g_steal_pointer(&libcameraSrc));
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return TestPass;
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}
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int GstreamerTest::startPipeline()
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{
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GstStateChangeReturn ret;
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/* Start playing */
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ret = gst_element_set_state(pipeline_, GST_STATE_PLAYING);
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if (ret == GST_STATE_CHANGE_FAILURE) {
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g_printerr("Unable to set the pipeline to the playing state.\n");
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return TestFail;
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}
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return TestPass;
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}
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int GstreamerTest::processEvent()
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{
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/* Wait until error or EOS or timeout after 2 seconds */
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constexpr GstMessageType msgType =
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static_cast<GstMessageType>(GST_MESSAGE_ERROR | GST_MESSAGE_EOS);
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constexpr GstClockTime timeout = 2 * GST_SECOND;
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g_autoptr(GstBus) bus = gst_element_get_bus(pipeline_);
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g_autoptr(GstMessage) msg = gst_bus_timed_pop_filtered(bus, timeout, msgType);
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gst_element_set_state(pipeline_, GST_STATE_NULL);
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/* Parse error message */
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if (msg == NULL)
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return TestPass;
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switch (GST_MESSAGE_TYPE(msg)) {
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case GST_MESSAGE_ERROR:
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printError(msg);
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break;
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case GST_MESSAGE_EOS:
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g_print("End-Of-Stream reached.\n");
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break;
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default:
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g_printerr("Unexpected message received.\n");
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break;
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}
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return TestFail;
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}
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void GstreamerTest::printError(GstMessage *msg)
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{
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g_autoptr(GError) err = NULL;
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g_autofree gchar *debug_info = NULL;
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gst_message_parse_error(msg, &err, &debug_info);
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g_printerr("Error received from element %s: %s\n",
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GST_OBJECT_NAME(msg->src), err->message);
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g_printerr("Debugging information: %s\n",
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debug_info ? debug_info : "none");
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}
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39
test/gstreamer/gstreamer_test.h
Normal file
39
test/gstreamer/gstreamer_test.h
Normal file
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@ -0,0 +1,39 @@
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2021, Vedant Paranjape
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*
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* gstreamer_test.cpp - GStreamer test base class
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*/
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#ifndef __LIBCAMERA_GSTREAMER_TEST_H__
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#define __LIBCAMERA_GSTREAMER_TEST_H__
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#include <iostream>
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#include <unistd.h>
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#include <libcamera/base/utils.h>
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#include "libcamera/internal/source_paths.h"
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#include <gst/gst.h>
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using namespace std;
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class GstreamerTest
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{
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public:
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GstreamerTest();
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virtual ~GstreamerTest();
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protected:
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virtual int createPipeline();
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int startPipeline();
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int processEvent();
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void printError(GstMessage *msg);
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GstElement *pipeline_;
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GstElement *libcameraSrc_;
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int status_;
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};
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#endif /* __LIBCAMERA_GSTREAMER_TEST_H__ */
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@ -10,7 +10,7 @@ gstreamer_tests = [
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gstreamer_dep = dependency('gstreamer-1.0', required: true)
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foreach t : gstreamer_tests
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exe = executable(t[0], t[1],
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exe = executable(t[0], t[1], 'gstreamer_test.cpp',
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dependencies : [libcamera_private, gstreamer_dep],
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link_with : test_libraries,
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include_directories : test_includes_internal)
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