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 391 matching lines @@
                                         0,
                                         false,
                                         ConstantResolutionVideoCaptureDevice);
   device->AllocateAndStart(capture_format, client_.PassAs<Client>());
   // Get captured video frames.
   WaitForCapturedFrame();
   EXPECT_EQ(rx_capability.color, PIXEL_FORMAT_MJPEG);
   device->StopAndDeAllocate();
 }
 
+TEST_F(VideoCaptureDeviceTest, GetDeviceSupportedFormats) {
+  VideoCaptureDevice::GetDeviceNames(&names_);
+  if (!names_.size()) {
+    DVLOG(1) << "No camera available. Exiting test.";
+    return;
+  }
+  VideoCaptureCapabilities capture_formats;
+  VideoCaptureDevice::Names::iterator names_iterator;
+  for (names_iterator = names_.begin(); names_iterator != names_.end();
+       ++names_iterator) {
+    VideoCaptureDevice::GetDeviceSupportedFormats(*names_iterator,
+                                                  &capture_formats);
+    // Nothing to test here since we cannot forecast the hardware capabilities.
+  }
+}
+
 TEST_F(VideoCaptureDeviceTest, FakeCaptureVariableResolution) {
   VideoCaptureDevice::Names names;
 
   FakeVideoCaptureDevice::GetDeviceNames(&names);
   media::VideoCaptureCapability capture_format;
   capture_format.width = 640;
   capture_format.height = 480;
   capture_format.frame_rate = 30;
   capture_format.frame_size_type = media::VariableResolutionVideoCaptureDevice;
 
@@ skipping 18 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, FakeGetDeviceSupportedFormats) {
+  VideoCaptureDevice::Names names;
+  FakeVideoCaptureDevice::GetDeviceNames(&names);
+
+  VideoCaptureCapabilities capture_formats;
+  VideoCaptureDevice::Names::iterator names_iterator;
+
+  for (names_iterator = names.begin(); names_iterator != names.end();
+       ++names_iterator) {
+    FakeVideoCaptureDevice::GetDeviceSupportedFormats(*names_iterator,
+                                                      &capture_formats);
+    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