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// Copyright (c) 2012 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.
// Unit test for VideoCaptureManager.
#include <string>
#include "base/bind.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/message_loop.h"
#include "base/process_util.h"
#include "content/browser/browser_thread_impl.h"
#include "content/browser/renderer_host/media/media_stream_provider.h"
#include "content/browser/renderer_host/media/video_capture_manager.h"
#include "content/common/media/media_stream_options.h"
#include "media/video/capture/video_capture_device.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using ::testing::_;
using ::testing::AnyNumber;
using ::testing::InSequence;
using testing::SaveArg;
using ::testing::Return;
namespace content {
// Listener class used to track progress of VideoCaptureManager test.
class MockMediaStreamProviderListener : public MediaStreamProviderListener {
public:
MockMediaStreamProviderListener() {}
~MockMediaStreamProviderListener() {}
MOCK_METHOD2(Opened, void(MediaStreamType, int));
MOCK_METHOD2(Closed, void(MediaStreamType, int));
MOCK_METHOD2(DevicesEnumerated, void(MediaStreamType,
const StreamDeviceInfoArray&));
MOCK_METHOD3(Error, void(MediaStreamType, int,
MediaStreamProviderError));
}; // class MockMediaStreamProviderListener
// Needed as an input argument to Start().
class MockFrameObserver : public media::VideoCaptureDevice::EventHandler {
public:
virtual void OnError() OVERRIDE {}
virtual void OnFrameInfo(
const media::VideoCaptureCapability& info) OVERRIDE {}
virtual void OnIncomingCapturedFrame(const uint8* data,
int length,
base::Time timestamp) OVERRIDE {}
virtual void OnIncomingCapturedVideoFrame(media::VideoFrame* frame,
base::Time timestamp) OVERRIDE {}
};
// Test class
class VideoCaptureManagerTest : public testing::Test {
public:
VideoCaptureManagerTest() {}
virtual ~VideoCaptureManagerTest() {}
protected:
virtual void SetUp() OVERRIDE {
listener_.reset(new MockMediaStreamProviderListener());
message_loop_.reset(new MessageLoop(MessageLoop::TYPE_IO));
io_thread_.reset(new BrowserThreadImpl(BrowserThread::IO,
message_loop_.get()));
vcm_ = new VideoCaptureManager();
vcm_->UseFakeDevice();
vcm_->Register(listener_.get(), message_loop_->message_loop_proxy());
frame_observer_.reset(new MockFrameObserver());
}
virtual void TearDown() OVERRIDE {}
scoped_refptr<VideoCaptureManager> vcm_;
scoped_ptr<MockMediaStreamProviderListener> listener_;
scoped_ptr<MessageLoop> message_loop_;
scoped_ptr<BrowserThreadImpl> io_thread_;
scoped_ptr<MockFrameObserver> frame_observer_;
private:
DISALLOW_COPY_AND_ASSIGN(VideoCaptureManagerTest);
};
// Test cases
// Try to open, start, stop and close a device.
TEST_F(VideoCaptureManagerTest, CreateAndClose) {
StreamDeviceInfoArray devices;
InSequence s;
EXPECT_CALL(*listener_, DevicesEnumerated(MEDIA_DEVICE_VIDEO_CAPTURE, _))
.Times(1).WillOnce(SaveArg<1>(&devices));
EXPECT_CALL(*listener_, Opened(MEDIA_DEVICE_VIDEO_CAPTURE, _)).Times(1);
EXPECT_CALL(*listener_, Closed(MEDIA_DEVICE_VIDEO_CAPTURE, _)).Times(1);
vcm_->EnumerateDevices(MEDIA_DEVICE_VIDEO_CAPTURE);
// Wait to get device callback.
message_loop_->RunUntilIdle();
int video_session_id = vcm_->Open(devices.front());
media::VideoCaptureParams capture_params;
capture_params.session_id = video_session_id;
capture_params.width = 320;
capture_params.height = 240;
capture_params.frame_per_second = 30;
vcm_->Start(capture_params, frame_observer_.get());
vcm_->Stop(video_session_id, base::Closure());
vcm_->Close(video_session_id);
// Wait to check callbacks before removing the listener.
message_loop_->RunUntilIdle();
vcm_->Unregister();
}
// Open the same device twice.
TEST_F(VideoCaptureManagerTest, OpenTwice) {
StreamDeviceInfoArray devices;
InSequence s;
EXPECT_CALL(*listener_, DevicesEnumerated(MEDIA_DEVICE_VIDEO_CAPTURE, _))
.Times(1).WillOnce(SaveArg<1>(&devices));
EXPECT_CALL(*listener_, Opened(MEDIA_DEVICE_VIDEO_CAPTURE, _)).Times(2);
EXPECT_CALL(*listener_, Closed(MEDIA_DEVICE_VIDEO_CAPTURE, _)).Times(2);
vcm_->EnumerateDevices(MEDIA_DEVICE_VIDEO_CAPTURE);
// Wait to get device callback.
message_loop_->RunUntilIdle();
int video_session_id_first = vcm_->Open(devices.front());
// This should trigger an error callback with error code
// 'kDeviceAlreadyInUse'.
int video_session_id_second = vcm_->Open(devices.front());
EXPECT_NE(video_session_id_first, video_session_id_second);
vcm_->Close(video_session_id_first);
vcm_->Close(video_session_id_second);
// Wait to check callbacks before removing the listener.
message_loop_->RunUntilIdle();
vcm_->Unregister();
}
// Open two different devices.
TEST_F(VideoCaptureManagerTest, OpenTwo) {
StreamDeviceInfoArray devices;
InSequence s;
EXPECT_CALL(*listener_, DevicesEnumerated(MEDIA_DEVICE_VIDEO_CAPTURE, _))
.Times(1).WillOnce(SaveArg<1>(&devices));
EXPECT_CALL(*listener_, Opened(MEDIA_DEVICE_VIDEO_CAPTURE, _)).Times(2);
EXPECT_CALL(*listener_, Closed(MEDIA_DEVICE_VIDEO_CAPTURE, _)).Times(2);
vcm_->EnumerateDevices(MEDIA_DEVICE_VIDEO_CAPTURE);
// Wait to get device callback.
message_loop_->RunUntilIdle();
StreamDeviceInfoArray::iterator it = devices.begin();
int video_session_id_first = vcm_->Open(*it);
++it;
int video_session_id_second = vcm_->Open(*it);
vcm_->Close(video_session_id_first);
vcm_->Close(video_session_id_second);
// Wait to check callbacks before removing the listener.
message_loop_->RunUntilIdle();
vcm_->Unregister();
}
// Try open a non-existing device.
TEST_F(VideoCaptureManagerTest, OpenNotExisting) {
StreamDeviceInfoArray devices;
InSequence s;
EXPECT_CALL(*listener_, DevicesEnumerated(MEDIA_DEVICE_VIDEO_CAPTURE, _))
.Times(1).WillOnce(SaveArg<1>(&devices));
EXPECT_CALL(*listener_, Error(MEDIA_DEVICE_VIDEO_CAPTURE,
_, kDeviceNotAvailable))
.Times(1);
vcm_->EnumerateDevices(MEDIA_DEVICE_VIDEO_CAPTURE);
// Wait to get device callback.
message_loop_->RunUntilIdle();
MediaStreamType stream_type = MEDIA_DEVICE_VIDEO_CAPTURE;
std::string device_name("device_doesnt_exist");
std::string device_id("id_doesnt_exist");
StreamDeviceInfo dummy_device(stream_type, device_name, device_id, false);
// This should fail with error code 'kDeviceNotAvailable'.
vcm_->Open(dummy_device);
// Wait to check callbacks before removing the listener.
message_loop_->RunUntilIdle();
vcm_->Unregister();
}
// Start a device using "magic" id, i.e. call Start without calling Open.
TEST_F(VideoCaptureManagerTest, StartUsingId) {
InSequence s;
EXPECT_CALL(*listener_, Opened(MEDIA_DEVICE_VIDEO_CAPTURE, _)).Times(1);
EXPECT_CALL(*listener_, Closed(MEDIA_DEVICE_VIDEO_CAPTURE, _)).Times(1);
media::VideoCaptureParams capture_params;
capture_params.session_id = VideoCaptureManager::kStartOpenSessionId;
capture_params.width = 320;
capture_params.height = 240;
capture_params.frame_per_second = 30;
// Start shall trigger the Open callback.
vcm_->Start(capture_params, frame_observer_.get());
// Stop shall trigger the Close callback
vcm_->Stop(VideoCaptureManager::kStartOpenSessionId, base::Closure());
// Wait to check callbacks before removing the listener.
message_loop_->RunUntilIdle();
vcm_->Unregister();
}
// Open and start a device, close it before calling Stop.
TEST_F(VideoCaptureManagerTest, CloseWithoutStop) {
StreamDeviceInfoArray devices;
InSequence s;
EXPECT_CALL(*listener_, DevicesEnumerated(MEDIA_DEVICE_VIDEO_CAPTURE, _))
.Times(1).WillOnce(SaveArg<1>(&devices));
EXPECT_CALL(*listener_, Opened(MEDIA_DEVICE_VIDEO_CAPTURE, _)).Times(1);
EXPECT_CALL(*listener_, Closed(MEDIA_DEVICE_VIDEO_CAPTURE, _)).Times(1);
vcm_->EnumerateDevices(MEDIA_DEVICE_VIDEO_CAPTURE);
// Wait to get device callback.
message_loop_->RunUntilIdle();
int video_session_id = vcm_->Open(devices.front());
media::VideoCaptureParams capture_params;
capture_params.session_id = video_session_id;
capture_params.width = 320;
capture_params.height = 240;
capture_params.frame_per_second = 30;
vcm_->Start(capture_params, frame_observer_.get());
// Close will stop the running device, an assert will be triggered in
// VideoCaptureManager destructor otherwise.
vcm_->Close(video_session_id);
vcm_->Stop(video_session_id, base::Closure());
// Wait to check callbacks before removing the listener
message_loop_->RunUntilIdle();
vcm_->Unregister();
}
} // namespace content
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