Gpu Image Decode Controller

cc/tiles/software_image_decode_controller.cc

 // Copyright 2015 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/tiles/software_image_decode_controller.h"
 
 #include <stdint.h>
 
 #include <functional>
 
@@ skipping 94 matching lines @@
       key.target_size().width() / static_cast<float>(key.src_rect().width());
   float y_scale =
       key.target_size().height() / static_cast<float>(key.src_rect().height());
   return SkSize::Make(x_scale, y_scale);
 }
 
 SkFilterQuality GetDecodedFilterQuality(const ImageDecodeControllerKey& key) {
   return std::min(key.filter_quality(), kLow_SkFilterQuality);
 }
 
-SkColorType SkColorTypeForDecoding(ResourceFormat format) {
-  // Use kN32_SkColorType if there is no corresponding SkColorType.
-  switch (format) {
-    case RGBA_4444:
-      return kARGB_4444_SkColorType;
-    case RGBA_8888:
-    case BGRA_8888:
-      return kN32_SkColorType;
-    case ALPHA_8:
-      return kAlpha_8_SkColorType;
-    case RGB_565:
-      return kRGB_565_SkColorType;
-    case LUMINANCE_8:
-      return kGray_8_SkColorType;
-    case ETC1:
-    case RED_8:
-    case LUMINANCE_F16:
-      return kN32_SkColorType;
-  }
-  NOTREACHED();
-  return kN32_SkColorType;
-}
-
 SkImageInfo CreateImageInfo(size_t width,
                             size_t height,
                             ResourceFormat format) {
-  return SkImageInfo::Make(width, height, SkColorTypeForDecoding(format),
+  return SkImageInfo::Make(width, height,
+                           ResourceFormatToClosestSkColorType(format),
                            kPremul_SkAlphaType);
 }
 
 }  // namespace
 
 SoftwareImageDecodeController::SoftwareImageDecodeController(
     ResourceFormat format)
     : decoded_images_(ImageMRUCache::NO_AUTO_EVICT),
       at_raster_decoded_images_(ImageMRUCache::NO_AUTO_EVICT),
       locked_images_budget_(kLockedMemoryLimitBytes),
@@ skipping 796 matching lines @@
 void SoftwareImageDecodeController::MemoryBudget::ResetUsage() {
   current_usage_bytes_ = 0;
 }
 
 size_t SoftwareImageDecodeController::MemoryBudget::GetCurrentUsageSafe()
     const {
   return current_usage_bytes_.ValueOrDie();
 }
 
 }  // namespace cc