[libcamera-devel] [PATCH v2 3/4] test: camera: Add capture test

[Niklas Söderlund]

Correctly configure the camera using the default configuration and run a
capture session for 100 milliseconds, which is plenty of time, in tests
over 600 requests completed using the vimc pipeline.

The test passes if at least the number of buffers used in the capture
times two number of requests completes to prove we cycle through all
buffers.

Signed-off-by: Niklas Söderlund <niklas.soderlund at ragnatech.se>
---
 test/camera/capture.cpp | 136 ++++++++++++++++++++++++++++++++++++++++
 test/camera/meson.build |   1 +
 2 files changed, 137 insertions(+)
 create mode 100644 test/camera/capture.cpp

diff --git a/test/camera/capture.cpp b/test/camera/capture.cpp
new file mode 100644
index 0000000000000000..44adcf3639393d3f
--- /dev/null
+++ b/test/camera/capture.cpp
@@ -0,0 +1,136 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * libcamera Camera API tests
+ */
+
+#include <iostream>
+
+#include "camera_test.h"
+
+using namespace std;
+
+namespace {
+
+class Capture : public CameraTest
+{
+protected:
+	unsigned int completeBuffersCount_;
+	unsigned int completeRequestsCount_;
+
+	void bufferComplete(Request *request, Buffer *buffer)
+	{
+		if (buffer->status() != Buffer::BufferSuccess)
+			return;
+
+		completeBuffersCount_++;
+	}
+
+	void requestComplete(Request *request, const std::map<Stream *, Buffer *> &buffers)
+	{
+		if (request->status() != Request::RequestComplete)
+			return;
+
+		completeRequestsCount_++;
+
+		/* Reuse the buffers for a new request. */
+		request = camera_->createRequest();
+		request->setBuffers(buffers);
+		camera_->queueRequest(request);
+	}
+
+	int run()
+	{
+		Stream *stream = *camera_->streams().begin();
+		std::set<Stream *> streams = { stream };
+		std::map<Stream *, StreamConfiguration> conf =
+			camera_->streamConfiguration(streams);
+		StreamConfiguration *sconf = &conf.begin()->second;
+
+		if (!configurationValid(streams, conf)) {
+			cout << "Reading default configuration" << endl;
+			return TestFail;
+		}
+
+		if (camera_->acquire()) {
+			cout << "Acquiring the camera" << endl;
+			return TestFail;
+		}
+
+		if (camera_->configureStreams(conf)) {
+			cout << "Setting default configuration" << endl;
+			return TestFail;
+		}
+
+		if (camera_->allocateBuffers()) {
+			cout << "Allocating buffers" << endl;
+			return TestFail;
+		}
+
+		BufferPool &pool = stream->bufferPool();
+		std::vector<Request *> requests;
+		for (Buffer &buffer : pool.buffers()) {
+			Request *request = camera_->createRequest();
+			if (!request) {
+				cout << "Creating requests" << endl;
+				return TestFail;
+			}
+
+			std::map<Stream *, Buffer *> map = { { stream, &buffer } };
+			if (request->setBuffers(map)) {
+				cout << "Associating buffers with requests" << endl;
+				return TestFail;
+			}
+
+			requests.push_back(request);
+		}
+
+		completeRequestsCount_ = 0;
+		completeBuffersCount_ = 0;
+
+		camera_->bufferCompleted.connect(this, &Capture::bufferComplete);
+		camera_->requestCompleted.connect(this, &Capture::requestComplete);
+
+		if (camera_->start()) {
+			cout << "Starting camera" << endl;
+			return TestFail;
+		}
+
+		for (Request *request : requests) {
+			if (camera_->queueRequest(request)) {
+				cout << "Queueing requests" << endl;
+				return TestFail;
+			}
+		}
+
+		EventDispatcher *dispatcher = CameraManager::instance()->eventDispatcher();
+
+		Timer timer;
+		timer.start(100);
+		while (timer.isRunning())
+			dispatcher->processEvents();
+
+		if (completeRequestsCount_ <= sconf->bufferCount * 2 ||
+		    completeRequestsCount_ != completeBuffersCount_) {
+			cout << "Capture failed" << endl;
+			return TestFail;
+		}
+
+		if (camera_->stop()) {
+			cout << "Stopping camera" << endl;
+			return TestFail;
+		}
+
+		if (camera_->freeBuffers()) {
+			cout << "Freeing buffers" << endl;
+			return TestFail;
+		}
+
+		return TestPass;
+	}
+};
+
+} /* namespace */
+
+TEST_REGISTER(Capture);
diff --git a/test/camera/meson.build b/test/camera/meson.build
index ed4837190ff6c52c..a1fd20326e97538b 100644
--- a/test/camera/meson.build
+++ b/test/camera/meson.build
@@ -3,6 +3,7 @@
 camera_tests = [
   [ 'configuration_default',  'configuration_default.cpp' ],
   [ 'configuration_set',      'configuration_set.cpp' ],
+  [ 'capture',                'capture.cpp' ],
 ]
 
 foreach t : camera_tests
-- 
2.21.0