Mac Video Capture Device: split VCD into VCD and Factory.

media/video/capture/fake_video_capture_device_unittest.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/bind.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/run_loop.h"
+#include "base/test/test_timeouts.h"
+#include "base/threading/thread.h"
+#include "media/video/capture/fake_video_capture_device.h"
+#include "media/video/capture/fake_video_capture_device_factory.h"
+#include "media/video/capture/video_capture_device.h"
+#include "media/video/capture/video_capture_types.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using ::testing::_;
+
+namespace media {
+
+class MockClient : public media::VideoCaptureDevice::Client {
+ public:
+  MOCK_METHOD2(ReserveOutputBuffer,
+               scoped_refptr<Buffer>(media::VideoFrame::Format format,
+                                     const gfx::Size& dimensions));
+  MOCK_METHOD0(OnErr, void());
+
+  explicit MockClient(base::Callback<void(const VideoCaptureFormat&)> frame_cb)
+      : main_thread_(base::MessageLoopProxy::current()), frame_cb_(frame_cb) {}
+
+  virtual void OnError(const std::string& error_message) OVERRIDE {
+    OnErr();
+  }
+
+  virtual void OnIncomingCapturedData(const uint8* data,
+                                      int length,
+                                      const VideoCaptureFormat& format,
+                                      int rotation,
+                                      base::TimeTicks timestamp) OVERRIDE {
+    main_thread_->PostTask(FROM_HERE, base::Bind(frame_cb_, format));
+  }
+
+  virtual void OnIncomingCapturedVideoFrame(
+      const scoped_refptr<Buffer>& buffer,
+      const media::VideoCaptureFormat& buffer_format,
+      const scoped_refptr<media::VideoFrame>& frame,
+      base::TimeTicks timestamp) OVERRIDE {
+    NOTREACHED();
+  }
+
+ private:
+  scoped_refptr<base::SingleThreadTaskRunner> main_thread_;
+  base::Callback<void(const VideoCaptureFormat&)> frame_cb_;
+};
+
+class FakeVideoCaptureDeviceTest : public testing::Test {
+ protected:
+  typedef media::VideoCaptureDevice::Client Client;
+
+  FakeVideoCaptureDeviceTest()
+      : loop_(new base::MessageLoop()),
+        client_(new MockClient(
+            base::Bind(&FakeVideoCaptureDeviceTest::OnFrameCaptured,
+                       base::Unretained(this)))),
+        video_capture_device_factory_(new FakeVideoCaptureDeviceFactory()) {}
+
+  virtual void SetUp() {
+  }
+
+  void OnFrameCaptured(const VideoCaptureFormat& format) {
+    last_format_ = format;
+    run_loop_->QuitClosure().Run();
+  }
+
+  void WaitForCapturedFrame() {
+    run_loop_.reset(new base::RunLoop());
+    run_loop_->Run();
+  }
+
+  const VideoCaptureFormat& last_format() const { return last_format_; }
+
+  VideoCaptureDevice::Names names_;
+  scoped_ptr<base::MessageLoop> loop_;
+  scoped_ptr<base::RunLoop> run_loop_;
+  scoped_ptr<MockClient> client_;
+  VideoCaptureFormat last_format_;
+  scoped_ptr<VideoCaptureDeviceFactory> video_capture_device_factory_;
+};
+
+TEST_F(FakeVideoCaptureDeviceTest, Capture) {
+  VideoCaptureDevice::Names names;
+
+  video_capture_device_factory_->GetDeviceNames(&names);
+
+  ASSERT_GT(static_cast<int>(names.size()), 0);
+
+  scoped_ptr<VideoCaptureDevice> device(
+      video_capture_device_factory_->Create(names.front()));
+  ASSERT_TRUE(device);
+
+  EXPECT_CALL(*client_, OnErr()).Times(0);
+
+  VideoCaptureParams capture_params;
+  capture_params.requested_format.frame_size.SetSize(640, 480);
+  capture_params.requested_format.frame_rate = 30;
+  capture_params.requested_format.pixel_format = PIXEL_FORMAT_I420;
+  capture_params.allow_resolution_change = false;
+  device->AllocateAndStart(capture_params, client_.PassAs<Client>());
+  WaitForCapturedFrame();
+  EXPECT_EQ(last_format().frame_size.width(), 640);
+  EXPECT_EQ(last_format().frame_size.height(), 480);
+  EXPECT_EQ(last_format().frame_rate, 30);
+  device->StopAndDeAllocate();
+}
+
+TEST_F(FakeVideoCaptureDeviceTest, GetDeviceSupportedFormats) {
+  VideoCaptureDevice::Names names;
+  video_capture_device_factory_->GetDeviceNames(&names);
+
+  VideoCaptureFormats supported_formats;
+  VideoCaptureDevice::Names::iterator names_iterator;
+
+  for (names_iterator = names.begin(); names_iterator != names.end();
+       ++names_iterator) {
+    video_capture_device_factory_->GetDeviceSupportedFormats(
+        *names_iterator, &supported_formats);
+    EXPECT_EQ(supported_formats.size(), 3u);
+    EXPECT_EQ(supported_formats[0].frame_size.width(), 320);
+    EXPECT_EQ(supported_formats[0].frame_size.height(), 240);
+    EXPECT_EQ(supported_formats[0].pixel_format, media::PIXEL_FORMAT_I420);
+    EXPECT_GE(supported_formats[0].frame_rate, 20);
+    EXPECT_EQ(supported_formats[1].frame_size.width(), 640);
+    EXPECT_EQ(supported_formats[1].frame_size.height(), 480);
+    EXPECT_EQ(supported_formats[1].pixel_format, media::PIXEL_FORMAT_I420);
+    EXPECT_GE(supported_formats[1].frame_rate, 20);
+    EXPECT_EQ(supported_formats[2].frame_size.width(), 1280);
+    EXPECT_EQ(supported_formats[2].frame_size.height(), 720);
+    EXPECT_EQ(supported_formats[2].pixel_format, media::PIXEL_FORMAT_I420);
+    EXPECT_GE(supported_formats[2].frame_rate, 20);
+  }
+}
+
+TEST_F(FakeVideoCaptureDeviceTest, CaptureVariableResolution) {
+  VideoCaptureDevice::Names names;
+
+  video_capture_device_factory_->GetDeviceNames(&names);
+  VideoCaptureParams capture_params;
+  capture_params.requested_format.frame_size.SetSize(640, 480);
+  capture_params.requested_format.frame_rate = 30;
+  capture_params.requested_format.pixel_format = PIXEL_FORMAT_I420;
+  capture_params.allow_resolution_change = true;
+
+  ASSERT_GT(static_cast<int>(names.size()), 0);
+
+  scoped_ptr<VideoCaptureDevice> device(
+      video_capture_device_factory_->Create(names.front()));
+  ASSERT_TRUE(device);
+
+  // Configure the FakeVideoCaptureDevice to use all its formats as roster.
+  VideoCaptureFormats formats;
+  video_capture_device_factory_->GetDeviceSupportedFormats(names.front(),
+                                                           &formats);
+  static_cast<FakeVideoCaptureDevice*>(device.get())->
+      PopulateVariableFormatsRoster(formats);
+
+  EXPECT_CALL(*client_, OnErr())
+      .Times(0);
+  int action_count = 200;
+
+  device->AllocateAndStart(capture_params, client_.PassAs<Client>());
+
+  // We set TimeWait to 200 action timeouts and this should be enough for at
+  // least action_count/kFakeCaptureCapabilityChangePeriod calls.
+  for (int i = 0; i < action_count; ++i) {
+    WaitForCapturedFrame();
+  }
+  device->StopAndDeAllocate();
+}
+
+};  // namespace media