Added BitsPerChannel method to video frame class.

cc/resources/video_resource_updater.cc

 // Copyright 2013 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 "cc/resources/video_resource_updater.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 367 matching lines @@
     return std::unique_ptr<VideoResourceUpdater::HalfFloatMaker>(
         new HalfFloatMaker_libyuv(bits_per_channel));
   }
 }
 
 VideoFrameExternalResources VideoResourceUpdater::CreateForSoftwarePlanes(
     scoped_refptr<media::VideoFrame> video_frame) {
   TRACE_EVENT0("cc", "VideoResourceUpdater::CreateForSoftwarePlanes");
   const media::VideoPixelFormat input_frame_format = video_frame->format();
 
-  // TODO(hubbe): Make this a video frame method.
-  int bits_per_channel = 0;
-  switch (input_frame_format) {
-    case media::PIXEL_FORMAT_UNKNOWN:
-      NOTREACHED();
-    // Fall through!
-    case media::PIXEL_FORMAT_I420:
-    case media::PIXEL_FORMAT_YV12:
-    case media::PIXEL_FORMAT_YV16:
-    case media::PIXEL_FORMAT_YV12A:
-    case media::PIXEL_FORMAT_YV24:
-    case media::PIXEL_FORMAT_NV12:
-    case media::PIXEL_FORMAT_NV21:
-    case media::PIXEL_FORMAT_UYVY:
-    case media::PIXEL_FORMAT_YUY2:
-    case media::PIXEL_FORMAT_ARGB:
-    case media::PIXEL_FORMAT_XRGB:
-    case media::PIXEL_FORMAT_RGB24:
-    case media::PIXEL_FORMAT_RGB32:
-    case media::PIXEL_FORMAT_MJPEG:
-    case media::PIXEL_FORMAT_MT21:
-    case media::PIXEL_FORMAT_Y8:
-    case media::PIXEL_FORMAT_I422:
-      bits_per_channel = 8;
-      break;
-    case media::PIXEL_FORMAT_YUV420P9:
-    case media::PIXEL_FORMAT_YUV422P9:
-    case media::PIXEL_FORMAT_YUV444P9:
-      bits_per_channel = 9;
-      break;
-    case media::PIXEL_FORMAT_YUV420P10:
-    case media::PIXEL_FORMAT_YUV422P10:
-    case media::PIXEL_FORMAT_YUV444P10:
-      bits_per_channel = 10;
-      break;
-    case media::PIXEL_FORMAT_YUV420P12:
-    case media::PIXEL_FORMAT_YUV422P12:
-    case media::PIXEL_FORMAT_YUV444P12:
-      bits_per_channel = 12;
-      break;
-    case media::PIXEL_FORMAT_Y16:
-      bits_per_channel = 16;
-      break;
-  }
+  int bits_per_channel = video_frame->BitsPerChannel(input_frame_format);
 
   // Only YUV and Y16 software video frames are supported.
   DCHECK(media::IsYuvPlanar(input_frame_format) ||
          input_frame_format == media::PIXEL_FORMAT_Y16);
 
   const bool software_compositor = context_provider_ == NULL;
 
   ResourceFormat output_resource_format;
   if (input_frame_format == media::PIXEL_FORMAT_Y16) {
     // Unable to display directly as yuv planes so convert it to RGBA for
@@ skipping 370 matching lines @@
   if (lost_resource) {
     resource_it->clear_refs();
     updater->DeleteResource(resource_it);
     return;
   }
 
   resource_it->remove_ref();
 }
 
 }  // namespace cc