Add VideoCaptureDevice::GetDeviceSupportedFormats to interface + implementation for Linux and Fake

media/video/capture/video_capture_device_unittest.cc

 // 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.
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/run_loop.h"
@@ skipping 50 matching lines @@
 using ::testing::SaveArg;
 
 namespace media {
 
 class MockFrameObserver : public media::VideoCaptureDevice::EventHandler {
  public:
   MOCK_METHOD0(ReserveOutputBuffer, scoped_refptr<media::VideoFrame>());
   MOCK_METHOD0(OnErr, void());
   MOCK_METHOD1(OnFrameInfo, void(const VideoCaptureCapability&));
   MOCK_METHOD1(OnFrameInfoChanged, void(const VideoCaptureCapability&));
+  MOCK_METHOD1(OnDeviceSupportedFormatsEnumerated,
+               void(const VideoCaptureFormats& formats));
 
   explicit MockFrameObserver(
       base::Closure frame_cb)
       : main_thread_(base::MessageLoopProxy::current()),
         frame_cb_(frame_cb) {}
 
   virtual void OnError() OVERRIDE {
     OnErr();
   }
 
@@ skipping 33 matching lines @@
 
   void WaitForCapturedFrame() {
     loop_->Run();
   }
 
 #if defined(OS_WIN)
   base::win::ScopedCOMInitializer initialize_com_;
 #endif
   scoped_ptr<MockFrameObserver> frame_observer_;
   VideoCaptureDevice::Names names_;
+  VideoCaptureFormats capture_formats_;
   scoped_ptr<base::MessageLoop> loop_;
 };
 
 TEST_F(VideoCaptureDeviceTest, OpenInvalidDevice) {
 #if defined(OS_WIN)
   VideoCaptureDevice::Name::CaptureApiType api_type =
       VideoCaptureDeviceMFWin::PlatformSupported()
           ? VideoCaptureDevice::Name::MEDIA_FOUNDATION
           : VideoCaptureDevice::Name::DIRECT_SHOW;
   VideoCaptureDevice::Name device_name("jibberish", "jibberish", api_type);
@@ skipping 129 matching lines @@
         resolution.height(),
         30,
         PIXEL_FORMAT_I420,
         0,
         false,
         ConstantResolutionVideoCaptureDevice);
 
     // The device (if it is an async implementation) may or may not get as far
     // as the OnFrameInfo() step; we're intentionally not going to wait for it
     // to get that far.
-    ON_CALL(*frame_observer, OnFrameInfo(_));
+    EXPECT_CALL(*frame_observer, OnFrameInfo(_)).Times(AnyNumber());
     device->AllocateAndStart(requested_format,
                              frame_observer.PassAs<EventHandler>());
     device->StopAndDeAllocate();
   }
 
   // Finally, do a device start and wait for it to finish.
   gfx::Size resolution;
   VideoCaptureCapability requested_format(
       320,
       240,
@@ skipping 159 matching lines @@
   // The amount of times the OnFrameInfoChanged gets called depends on how often
   // FakeDevice is supposed to change and what is its actual frame rate.
   // 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();
 }
 
+TEST_F(VideoCaptureDeviceTest, GetDeviceSupportedFormats) {
+  VideoCaptureDevice::Names names;
+
+  FakeVideoCaptureDevice::GetDeviceNames(&names);
+  scoped_ptr<VideoCaptureDevice> device(
+      FakeVideoCaptureDevice::Create(names.front()));
+  ASSERT_TRUE(device.get() != NULL);
+  EXPECT_CALL(*frame_observer_, OnDeviceSupportedFormatsEnumerated(_))
+      .Times(1)
+      .WillOnce(SaveArg<0>(&capture_formats_));
+  device->GetDeviceSupportedFormats(frame_observer_.PassAs<EventHandler>());
+
+  EXPECT_GE(capture_formats_.size(), 1u);
+  EXPECT_EQ(capture_formats_[0].width, 640);
+  EXPECT_EQ(capture_formats_[0].height, 480);
+  EXPECT_EQ(capture_formats_[0].color, media::PIXEL_FORMAT_I420);
+  EXPECT_GE(capture_formats_[0].frame_rate, 20);
+}
+
 };  // namespace media