color: Rename blink::ColorSpace to blink::InterpolationSpace

third_party/WebKit/Source/platform/graphics/ColorSpace.cpp

Index: third_party/WebKit/Source/platform/graphics/ColorSpace.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/ColorSpace.cpp b/third_party/WebKit/Source/platform/graphics/ColorSpace.cpp
deleted file mode 100644
index 59d95db6eb1f4e49d929eb895db87993640eaf68..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/platform/graphics/ColorSpace.cpp
+++ /dev/null
@@ -1,178 +0,0 @@
-/*
- * Copyright (c) 2008, Google Inc. All rights reserved.
- * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
- * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "platform/graphics/ColorSpace.h"
-
-#include <algorithm>
-#include "platform/graphics/skia/SkiaUtils.h"
-#include "platform/wtf/MathExtras.h"
-#include "public/platform/WebScreenInfo.h"
-#include "third_party/skia/include/core/SkColorSpaceXform.h"
-#include "third_party/skia/include/effects/SkTableColorFilter.h"
-
-namespace blink {
-
-namespace ColorSpaceUtilities {
-
-static const uint8_t* GetLinearRgbLUT() {
-  static uint8_t linear_rgb_lut[256];
-  static bool initialized;
-  if (!initialized) {
-    for (unsigned i = 0; i < 256; i++) {
-      float color = i / 255.0f;
-      color = (color <= 0.04045f ? color / 12.92f
-                                 : pow((color + 0.055f) / 1.055f, 2.4f));
-      color = std::max(0.0f, color);
-      color = std::min(1.0f, color);
-      linear_rgb_lut[i] = static_cast<uint8_t>(round(color * 255));
-    }
-    initialized = true;
-  }
-  return linear_rgb_lut;
-}
-
-static const uint8_t* GetDeviceRgbLUT() {
-  static uint8_t device_rgb_lut[256];
-  static bool initialized;
-  if (!initialized) {
-    for (unsigned i = 0; i < 256; i++) {
-      float color = i / 255.0f;
-      color = (powf(color, 1.0f / 2.4f) * 1.055f) - 0.055f;
-      color = std::max(0.0f, color);
-      color = std::min(1.0f, color);
-      device_rgb_lut[i] = static_cast<uint8_t>(round(color * 255));
-    }
-    initialized = true;
-  }
-  return device_rgb_lut;
-}
-
-const uint8_t* GetConversionLUT(ColorSpace dst_color_space,
-                                ColorSpace src_color_space) {
-  // Identity.
-  if (src_color_space == dst_color_space)
-    return 0;
-
-  // Only sRGB/DeviceRGB <-> linearRGB are supported at the moment.
-  if ((src_color_space != kColorSpaceLinearRGB &&
-       src_color_space != kColorSpaceDeviceRGB) ||
-      (dst_color_space != kColorSpaceLinearRGB &&
-       dst_color_space != kColorSpaceDeviceRGB))
-    return 0;
-
-  if (dst_color_space == kColorSpaceLinearRGB)
-    return GetLinearRgbLUT();
-  if (dst_color_space == kColorSpaceDeviceRGB)
-    return GetDeviceRgbLUT();
-
-  NOTREACHED();
-  return 0;
-}
-
-Color ConvertColor(const Color& src_color,
-                   ColorSpace dst_color_space,
-                   ColorSpace src_color_space) {
-  const uint8_t* lookup_table =
-      GetConversionLUT(dst_color_space, src_color_space);
-  if (!lookup_table)
-    return src_color;
-
-  return Color(lookup_table[src_color.Red()], lookup_table[src_color.Green()],
-               lookup_table[src_color.Blue()], src_color.Alpha());
-}
-
-sk_sp<SkColorFilter> CreateColorSpaceFilter(ColorSpace src_color_space,
-                                            ColorSpace dst_color_space) {
-  const uint8_t* lookup_table =
-      GetConversionLUT(dst_color_space, src_color_space);
-  if (!lookup_table)
-    return nullptr;
-
-  return SkTableColorFilter::MakeARGB(0, lookup_table, lookup_table,
-                                      lookup_table);
-}
-
-ColorSpaceGamut GetColorSpaceGamut(const WebScreenInfo& screen_info) {
-  const gfx::ICCProfile& profile = screen_info.icc_profile;
-  if (profile == gfx::ICCProfile())
-    return ColorSpaceGamut::kUnknown;
-
-  return ColorSpaceUtilities::GetColorSpaceGamut(
-      profile.GetColorSpace().ToSkColorSpace().get());
-}
-
-ColorSpaceGamut GetColorSpaceGamut(SkColorSpace* color_space) {
-  sk_sp<SkColorSpace> sc_rgb(SkColorSpace::MakeSRGBLinear());
-  std::unique_ptr<SkColorSpaceXform> transform(
-      SkColorSpaceXform::New(color_space, sc_rgb.get()));
-
-  if (!transform)
-    return ColorSpaceGamut::kUnknown;
-
-  unsigned char in[3][4];
-  float out[3][4];
-  memset(in, 0, sizeof(in));
-  in[0][0] = 255;
-  in[1][1] = 255;
-  in[2][2] = 255;
-  in[0][3] = 255;
-  in[1][3] = 255;
-  in[2][3] = 255;
-  transform->apply(SkColorSpaceXform::kRGBA_F32_ColorFormat, out,
-                   SkColorSpaceXform::kRGBA_8888_ColorFormat, in, 3,
-                   kOpaque_SkAlphaType);
-  float score = out[0][0] * out[1][1] * out[2][2];
-
-  if (score < 0.9)
-    return ColorSpaceGamut::kLessThanNTSC;
-  if (score < 0.95)
-    return ColorSpaceGamut::NTSC;  // actual score 0.912839
-  if (score < 1.1)
-    return ColorSpaceGamut::SRGB;  // actual score 1.0
-  if (score < 1.3)
-    return ColorSpaceGamut::kAlmostP3;
-  if (score < 1.425)
-    return ColorSpaceGamut::P3;  // actual score 1.401899
-  if (score < 1.5)
-    return ColorSpaceGamut::kAdobeRGB;  // actual score 1.458385
-  if (score < 2.0)
-    return ColorSpaceGamut::kWide;
-  if (score < 2.2)
-    return ColorSpaceGamut::BT2020;  // actual score 2.104520
-  if (score < 2.7)
-    return ColorSpaceGamut::kProPhoto;  // actual score 2.913247
-  return ColorSpaceGamut::kUltraWide;
-}
-
-}  // namespace ColorSpaceUtilities
-
-}  // namespace blink