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

media/video/capture/video_capture_device_factory.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 "media/video/capture/video_capture_device_factory.h"
 
+#include "base/command_line.h"
+#include "media/base/media_switches.h"
+#include "media/video/capture/fake_video_capture_device_factory.h"
+#include "media/video/capture/file_video_capture_device_factory.h"
+
+#if defined(OS_MACOSX)
+#include "media/video/capture/mac/video_capture_device_factory_mac.h"
+#endif
+
 namespace media {
 
+// static
+scoped_ptr<VideoCaptureDeviceFactory>
+    VideoCaptureDeviceFactory::CreateFactory() {
+  const CommandLine* command_line = CommandLine::ForCurrentProcess();
+  // Use a Fake or File Video Device Factory if the command line flags are
+  // present, otherwise use the normal, platform-dependent, device factory.
+  if (command_line->HasSwitch(switches::kUseFakeDeviceForMediaStream)) {
+    if (command_line->HasSwitch(switches::kUseFileForFakeVideoCapture)) {
+      return scoped_ptr<VideoCaptureDeviceFactory>(new
+          media::FileVideoCaptureDeviceFactory());
+    } else {
+      return scoped_ptr<VideoCaptureDeviceFactory>(new
+          media::FakeVideoCaptureDeviceFactory());
+    }
+  } else {
+#if defined(OS_MACOSX)
+    return scoped_ptr<VideoCaptureDeviceFactory>(new
+        VideoCaptureDeviceFactoryMac());
+#else
+    return scoped_ptr<VideoCaptureDeviceFactory>(new
+        VideoCaptureDeviceFactory());
+#endif
+  }
+}
+
 VideoCaptureDeviceFactory::VideoCaptureDeviceFactory() {
   thread_checker_.DetachFromThread();
-};
+}
+
+VideoCaptureDeviceFactory::~VideoCaptureDeviceFactory() {}
 
 scoped_ptr<VideoCaptureDevice> VideoCaptureDeviceFactory::Create(
     const VideoCaptureDevice::Name& device_name) {
   DCHECK(thread_checker_.CalledOnValidThread());
+// TODO(mcasas): Remove the #if parts when all platforms have splitted the

[perkj_chrome, 2014/05/06 11:32:43]

You don't need all these Ifdefs now right?  All methods are virtual.

[mcasas, 2014/05/06 12:47:21]

Done.

+// VideoCaptureDevice into VideoCaptureDevice and VideoCaptureDeviceFactory.
+// Remove as well the call to the VideoCaptureDevice static method.
+#if !defined(OS_MACOSX)
   return scoped_ptr<VideoCaptureDevice>(
       VideoCaptureDevice::Create(device_name));
+#else
+  return scoped_ptr<VideoCaptureDevice>();
+#endif
 }
 
 void VideoCaptureDeviceFactory::GetDeviceNames(
     VideoCaptureDevice::Names* device_names) {
   DCHECK(thread_checker_.CalledOnValidThread());
+// See TODO in Create().
+#if !defined(OS_MACOSX)
   VideoCaptureDevice::GetDeviceNames(device_names);
+#endif
 }
 
 void VideoCaptureDeviceFactory::GetDeviceSupportedFormats(
     const VideoCaptureDevice::Name& device,
     VideoCaptureFormats* supported_formats) {
   DCHECK(thread_checker_.CalledOnValidThread());
+// See TODO in Create().
+#if !defined(OS_MACOSX)
   VideoCaptureDevice::GetDeviceSupportedFormats(device, supported_formats);
+#endif
 }
 
 }  // namespace media