[Mojo Video Capture] Move conversions between mojom and media types to a separate file

services/video_capture/mojo_media_conversions.cc

 // Copyright 2016 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/logging.h"
-#include "services/video_capture/device_client_mojo_to_media_adapter.h"
-#include "services/video_capture/video_capture_device_proxy_impl.h"
+#include "services/video_capture/mojo_media_conversions.h"
 
 namespace video_capture {
 
-VideoCaptureDeviceProxyImpl::VideoCaptureDeviceProxyImpl(
-    std::unique_ptr<media::VideoCaptureDevice> device)
-    : device_(std::move(device)) {}
-
-VideoCaptureDeviceProxyImpl::~VideoCaptureDeviceProxyImpl() {
-  if (device_running_)
-    device_->StopAndDeAllocate();
-}
-
-void VideoCaptureDeviceProxyImpl::Start(
-    mojom::VideoCaptureFormatPtr requested_format,
-    mojom::ResolutionChangePolicy resolution_change_policy,
-    mojom::PowerLineFrequency power_line_frequency,
-    mojom::VideoCaptureDeviceClientPtr client) {
-  media::VideoCaptureParams params;
-  params.requested_format = ConvertFromMojoToMedia(std::move(requested_format));
-  params.resolution_change_policy =
-      ConvertFromMojoToMedia(resolution_change_policy);
-  params.power_line_frequency = ConvertFromMojoToMedia(power_line_frequency);
-  client.set_connection_error_handler(
-      base::Bind(&VideoCaptureDeviceProxyImpl::OnClientConnectionErrorOrClose,
-                 base::Unretained(this)));
-  auto media_client =
-      base::MakeUnique<DeviceClientMojoToMediaAdapter>(std::move(client));
-  device_->AllocateAndStart(params, std::move(media_client));
-  device_running_ = true;
-}
-
-void VideoCaptureDeviceProxyImpl::Stop() {
-  device_->StopAndDeAllocate();
-  device_running_ = false;
-}
-
-void VideoCaptureDeviceProxyImpl::OnClientConnectionErrorOrClose() {
-  device_->StopAndDeAllocate();
-}
-
-// static
-media::VideoCaptureFormat VideoCaptureDeviceProxyImpl::ConvertFromMojoToMedia(
+media::VideoCaptureFormat ConvertFromMojoToMedia(
     mojom::VideoCaptureFormatPtr format) {
   media::VideoCaptureFormat result;
   result.pixel_format = ConvertFromMojoToMedia(format->pixel_format);
   result.pixel_storage = ConvertFromMojoToMedia(format->pixel_storage);
   result.frame_size.SetSize(format->frame_size.width(),
                             format->frame_size.height());
   result.frame_rate = format->frame_rate;
   return result;
 }
 
-// static
-media::VideoPixelFormat VideoCaptureDeviceProxyImpl::ConvertFromMojoToMedia(
+media::VideoPixelFormat ConvertFromMojoToMedia(
     media::mojom::VideoFormat format) {
   // Since there are static_asserts in place in
   // media/mojo/common/media_type_converters.cc to guarantee equality of the
   // underlying representations, we can simply static_cast to convert.
   return static_cast<media::VideoPixelFormat>(format);
 }
 
-// static
-media::VideoPixelStorage VideoCaptureDeviceProxyImpl::ConvertFromMojoToMedia(
+media::VideoPixelStorage ConvertFromMojoToMedia(
     mojom::VideoPixelStorage storage) {
   switch (storage) {
     case mojom::VideoPixelStorage::CPU:
       return media::PIXEL_STORAGE_CPU;
     case mojom::VideoPixelStorage::GPUMEMORYBUFFER:
       return media::PIXEL_STORAGE_GPUMEMORYBUFFER;
   }
   NOTREACHED();
   return media::PIXEL_STORAGE_CPU;
 }
 
-// static
-media::ResolutionChangePolicy
-VideoCaptureDeviceProxyImpl::ConvertFromMojoToMedia(
+media::ResolutionChangePolicy ConvertFromMojoToMedia(
     mojom::ResolutionChangePolicy policy) {
   switch (policy) {
     case mojom::ResolutionChangePolicy::FIXED_RESOLUTION:
       return media::RESOLUTION_POLICY_FIXED_RESOLUTION;
     case mojom::ResolutionChangePolicy::FIXED_ASPECT_RATIO:
       return media::RESOLUTION_POLICY_FIXED_ASPECT_RATIO;
     case mojom::ResolutionChangePolicy::ANY_WITHIN_LIMIT:
       return media::RESOLUTION_POLICY_ANY_WITHIN_LIMIT;
   }
   NOTREACHED();
   return media::RESOLUTION_POLICY_FIXED_RESOLUTION;
 }
 
-// static
-media::PowerLineFrequency VideoCaptureDeviceProxyImpl::ConvertFromMojoToMedia(
+media::PowerLineFrequency ConvertFromMojoToMedia(
     mojom::PowerLineFrequency frequency) {
   switch (frequency) {
     case mojom::PowerLineFrequency::DEFAULT:
       return media::PowerLineFrequency::FREQUENCY_DEFAULT;
     case mojom::PowerLineFrequency::HZ_50:
       return media::PowerLineFrequency::FREQUENCY_50HZ;
     case mojom::PowerLineFrequency::HZ_60:
       return media::PowerLineFrequency::FREQUENCY_60HZ;
   }
   NOTREACHED();
   return media::PowerLineFrequency::FREQUENCY_DEFAULT;
 }
 
 }  // namespace video_capture