This is the VideoCaptureDevice implementation for windows.

media/video/capture/video_capture_device_unittest.cc

+// Copyright (c) 2011 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/memory/scoped_ptr.h"
+#include "base/synchronization/waitable_event.h"
+#include "base/threading/thread.h"
+#include "media/video/capture/fake_video_capture_device.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::Return;
+using ::testing::AtLeast;
+
+namespace media {
+const int kWaitTime = 3000;
+
+class MockFrameObserver: public media::VideoCaptureDevice::EventHandler {
+ public:
+  MOCK_METHOD0(OnErr, void());
+  MOCK_METHOD3(OnFrameInfo, void(int width, int height, int frame_rate));
+
+  explicit MockFrameObserver(base::WaitableEvent* wait_event)
+     : wait_event_(wait_event) {}
+
+  virtual void OnError() OVERRIDE {
+    OnErr();
+  }
+
+  virtual void OnFrameInfo(
+      const VideoCaptureDevice::Capability& info) OVERRIDE {
+    OnFrameInfo(info.width, info.height, info.frame_rate);
+  }
+
+  virtual void OnIncomingCapturedFrame(const uint8* data, int length,
+                                       base::Time timestamp) OVERRIDE {
+    wait_event_->Signal();
+  }
+
+ private:
+  base::WaitableEvent* wait_event_;
+};
+
+class VideoCaptureDeviceTest : public testing::Test {
+ public:
+  VideoCaptureDeviceTest(): wait_event_(false, false) { }
+
+ protected:
+  virtual void SetUp() {
+    frame_observer_.reset(new MockFrameObserver(&wait_event_));
+  }
+
+  virtual void TearDown() {
+  }
+
+  base::WaitableEvent wait_event_;
+  scoped_ptr<MockFrameObserver> frame_observer_;
+  VideoCaptureDevice::Names names_;
+};
+
+TEST_F(VideoCaptureDeviceTest, OpenInvalidDevice) {
+  VideoCaptureDevice::Name device_name;
+  device_name.device_name = "jibberish";
+  device_name.unique_id = "jibberish";
+  VideoCaptureDevice* device = VideoCaptureDevice::Create(device_name);
+  EXPECT_TRUE(device == NULL);
+}
+
+TEST_F(VideoCaptureDeviceTest, CaptureVGA) {
+  VideoCaptureDevice::GetDeviceNames(&names_);
+    // Make sure there are more than 0 cameras.
+  if (!names_.size()) {
+    LOG(WARNING) << "No camera available. Exiting test.";
+    return;
+  }
+
+  scoped_ptr<VideoCaptureDevice> device(
+      VideoCaptureDevice::Create(names_.front()));
+  ASSERT_FALSE(device.get() == NULL);
+
+  // Get info about the new resolution.
+  EXPECT_CALL(*frame_observer_, OnFrameInfo(640, 480, 30))
+      .Times(1);
+
+  EXPECT_CALL(*frame_observer_, OnErr())
+      .Times(0);
+
+  device->Allocate(640, 480, 30, frame_observer_.get());
+  device->Start();
+  // Wait for 3s or for captured frame.
+  EXPECT_TRUE(wait_event_.TimedWait(
+      base::TimeDelta::FromMilliseconds(kWaitTime)));
+  device->Stop();
+  device->DeAllocate();
+}
+
+TEST_F(VideoCaptureDeviceTest, Capture720p) {
+  VideoCaptureDevice::GetDeviceNames(&names_);
+    // Make sure there are more than 0 cameras.
+  if (!names_.size()) {
+    LOG(WARNING) << "No camera available. Exiting test.";
+    return;
+  }
+
+  scoped_ptr<VideoCaptureDevice> device(
+      VideoCaptureDevice::Create(names_.front()));
+  ASSERT_FALSE(device.get() == NULL);
+
+  // Get info about the new resolution.
+  // We don't care about the resulting resolution or frame rate as it might
+  // be different from one machine to the next.
+  EXPECT_CALL(*frame_observer_, OnFrameInfo(_, _, _))
+      .Times(1);
+
+  EXPECT_CALL(*frame_observer_, OnErr())
+      .Times(0);
+
+  device->Allocate(1280, 720, 30, frame_observer_.get());
+  device->Start();
+  // Get captured video frames.
+  EXPECT_TRUE(wait_event_.TimedWait(
+      base::TimeDelta::FromMilliseconds(kWaitTime)));
+  device->Stop();
+  device->DeAllocate();
+}
+
+TEST_F(VideoCaptureDeviceTest, AllocateSameCameraTwice) {
+  VideoCaptureDevice::GetDeviceNames(&names_);
+  if (!names_.size()) {
+    LOG(WARNING) << "No camera available. Exiting test.";
+    return;
+  }
+  scoped_ptr<VideoCaptureDevice> device1(
+      VideoCaptureDevice::Create(names_.front()));
+  ASSERT_TRUE(device1.get() != NULL);
+
+  scoped_ptr<VideoCaptureDevice> device2(
+      VideoCaptureDevice::Create(names_.front()));
+  ASSERT_TRUE(device2.get() != NULL);
+
+  // 1. Get info about the new resolution on the first allocated camera
+  EXPECT_CALL(*frame_observer_, OnFrameInfo(640, 480, 30));
+
+  device1->Allocate(640, 480, 30, frame_observer_.get());
+
+  // 2. Error when trying to allocate the same camera again.
+  EXPECT_CALL(*frame_observer_, OnErr());
+  device2->Allocate(640, 480, 30, frame_observer_.get());
+
+  device1->DeAllocate();
+  device2->DeAllocate();
+}
+
+TEST_F(VideoCaptureDeviceTest, AllocateBadSize) {
+  VideoCaptureDevice::GetDeviceNames(&names_);
+  if (!names_.size()) {
+    LOG(WARNING) << "No camera available. Exiting test.";
+    return;
+  }
+  scoped_ptr<VideoCaptureDevice> device(
+      VideoCaptureDevice::Create(names_.front()));
+  ASSERT_TRUE(device.get() != NULL);
+
+  EXPECT_CALL(*frame_observer_, OnErr())
+      .Times(0);
+
+  // get info about the new resolution
+  EXPECT_CALL(*frame_observer_, OnFrameInfo(640, 480 , _))
+      .Times(AtLeast(1));
+
+  device->Allocate(637, 472, 35, frame_observer_.get());
+  device->DeAllocate();
+}
+
+TEST_F(VideoCaptureDeviceTest, ReAllocateCamera) {
+  VideoCaptureDevice::GetDeviceNames(&names_);
+  if (!names_.size()) {
+    LOG(WARNING) << "No camera available. Exiting test.";
+    return;
+  }
+  scoped_ptr<VideoCaptureDevice> device(
+      VideoCaptureDevice::Create(names_.front()));
+  ASSERT_TRUE(device.get() != NULL);
+  EXPECT_CALL(*frame_observer_, OnErr())
+      .Times(0);
+  // get info about the new resolution
+  EXPECT_CALL(*frame_observer_, OnFrameInfo(640, 480, _));
+
+  EXPECT_CALL(*frame_observer_, OnFrameInfo(320, 240, _));
+
+  device->Allocate(640, 480, 30, frame_observer_.get());
+  device->Start();
+  // Nothing shall happen.
+  device->Allocate(1280, 1024, 30, frame_observer_.get());
+  device->DeAllocate();
+  // Allocate new size 320, 240
+  device->Allocate(320, 240, 30, frame_observer_.get());
+
+  device->Start();
+  // Get captured video frames.
+  EXPECT_TRUE(wait_event_.TimedWait(
+      base::TimeDelta::FromMilliseconds(kWaitTime)));
+  device->Stop();
+  device->DeAllocate();
+}
+
+TEST_F(VideoCaptureDeviceTest, DeAllocateCameraWhileRunning) {
+  VideoCaptureDevice::GetDeviceNames(&names_);
+  if (!names_.size()) {
+    LOG(WARNING) << "No camera available. Exiting test.";
+    return;
+  }
+  scoped_ptr<VideoCaptureDevice> device(
+      VideoCaptureDevice::Create(names_.front()));
+  ASSERT_TRUE(device.get() != NULL);
+
+  EXPECT_CALL(*frame_observer_, OnErr())
+      .Times(0);
+  // Get info about the new resolution.
+  EXPECT_CALL(*frame_observer_, OnFrameInfo(640, 480, 30));
+
+  device->Allocate(640, 480, 30, frame_observer_.get());
+
+  device->Start();
+  // Get captured video frames.
+  EXPECT_TRUE(wait_event_.TimedWait(
+      base::TimeDelta::FromMilliseconds(kWaitTime)));
+  device->DeAllocate();
+}
+
+TEST_F(VideoCaptureDeviceTest, TestFakeCapture) {
+  VideoCaptureDevice::Names names;
+
+  FakeVideoCaptureDevice::GetDeviceNames(&names);
+
+  ASSERT_GT(static_cast<int>(names.size()), 0);
+
+  scoped_ptr<VideoCaptureDevice> device(
+      FakeVideoCaptureDevice::Create(names.front()));
+  ASSERT_TRUE(device.get() != NULL);
+
+  // Get info about the new resolution.
+  EXPECT_CALL(*frame_observer_, OnFrameInfo(640, 480, 30))
+      .Times(1);
+
+  EXPECT_CALL(*frame_observer_, OnErr())
+      .Times(0);
+
+  device->Allocate(640, 480, 30, frame_observer_.get());
+
+  device->Start();
+  EXPECT_TRUE(wait_event_.TimedWait(
+      base::TimeDelta::FromMilliseconds(kWaitTime)));
+  device->Stop();
+  device->DeAllocate();
+}
+
+};  // namespace media