color: Clarify default behaviors

ui/gfx/color_space_win.cc

 // Copyright (c) 2012 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 "ui/gfx/color_space_win.h"
 
 namespace gfx {
 
 DXVA2_ExtendedFormat ColorSpaceWin::GetExtendedFormat(
     const ColorSpace& color_space) {
   DXVA2_ExtendedFormat format;
   memset(&format, 0, sizeof(format));
   format.SampleFormat = DXVA2_SampleProgressiveFrame;
   format.VideoLighting = DXVA2_VideoLighting_dim;
   format.NominalRange = DXVA2_NominalRange_16_235;
   format.VideoTransferMatrix = DXVA2_VideoTransferMatrix_BT709;
   format.VideoPrimaries = DXVA2_VideoPrimaries_BT709;
   format.VideoTransferFunction = DXVA2_VideoTransFunc_709;
 
   switch (color_space.range_) {
     case gfx::ColorSpace::RangeID::LIMITED:
       format.NominalRange = DXVA2_NominalRange_16_235;
       break;
     case gfx::ColorSpace::RangeID::FULL:
       format.NominalRange = DXVA2_NominalRange_0_255;
       break;
-
-    case gfx::ColorSpace::RangeID::UNSPECIFIED:
     case gfx::ColorSpace::RangeID::DERIVED:
       // Not handled
       break;
   }
 
   switch (color_space.matrix_) {
     case gfx::ColorSpace::MatrixID::BT709:
       format.VideoTransferMatrix = DXVA2_VideoTransferMatrix_BT709;
       break;
     case gfx::ColorSpace::MatrixID::BT470BG:
     case gfx::ColorSpace::MatrixID::SMPTE170M:
       format.VideoTransferMatrix = DXVA2_VideoTransferMatrix_BT601;
       break;
     case gfx::ColorSpace::MatrixID::SMPTE240M:
       format.VideoTransferMatrix = DXVA2_VideoTransferMatrix_SMPTE240M;
       break;
 
     case gfx::ColorSpace::MatrixID::RGB:
-    case gfx::ColorSpace::MatrixID::UNSPECIFIED:
-    case gfx::ColorSpace::MatrixID::RESERVED:
     case gfx::ColorSpace::MatrixID::FCC:
     case gfx::ColorSpace::MatrixID::YCOCG:
     case gfx::ColorSpace::MatrixID::BT2020_NCL:
     case gfx::ColorSpace::MatrixID::BT2020_CL:
     case gfx::ColorSpace::MatrixID::YDZDX:
-    case gfx::ColorSpace::MatrixID::UNKNOWN:
       // Not handled
       break;
   }
 
   switch (color_space.primaries_) {
     case gfx::ColorSpace::PrimaryID::BT709:
       format.VideoPrimaries = DXVA2_VideoPrimaries_BT709;
       break;
     case gfx::ColorSpace::PrimaryID::BT470M:
       format.VideoPrimaries = DXVA2_VideoPrimaries_BT470_2_SysM;
       break;
     case gfx::ColorSpace::PrimaryID::BT470BG:
       format.VideoPrimaries = DXVA2_VideoPrimaries_BT470_2_SysBG;
       break;
     case gfx::ColorSpace::PrimaryID::SMPTE170M:
       format.VideoPrimaries = DXVA2_VideoPrimaries_SMPTE170M;
       break;
     case gfx::ColorSpace::PrimaryID::SMPTE240M:
       format.VideoPrimaries = DXVA2_VideoPrimaries_SMPTE240M;
       break;
 
-    case gfx::ColorSpace::PrimaryID::RESERVED0:
-    case gfx::ColorSpace::PrimaryID::UNSPECIFIED:
-    case gfx::ColorSpace::PrimaryID::RESERVED:
     case gfx::ColorSpace::PrimaryID::FILM:
     case gfx::ColorSpace::PrimaryID::BT2020:
     case gfx::ColorSpace::PrimaryID::SMPTEST428_1:
     case gfx::ColorSpace::PrimaryID::SMPTEST431_2:
     case gfx::ColorSpace::PrimaryID::SMPTEST432_1:
-    case gfx::ColorSpace::PrimaryID::UNKNOWN:
+    case gfx::ColorSpace::PrimaryID::INVALID:
     case gfx::ColorSpace::PrimaryID::XYZ_D50:
     case gfx::ColorSpace::PrimaryID::ADOBE_RGB:
     case gfx::ColorSpace::PrimaryID::CUSTOM:
       // Not handled
       break;
   }
 
   switch (color_space.transfer_) {
     case gfx::ColorSpace::TransferID::BT709:
     case gfx::ColorSpace::TransferID::SMPTE170M:
       format.VideoTransferFunction = DXVA2_VideoTransFunc_709;
       break;
     case gfx::ColorSpace::TransferID::SMPTE240M:
       format.VideoTransferFunction = DXVA2_VideoTransFunc_240M;
       break;
     case gfx::ColorSpace::TransferID::GAMMA22:
       format.VideoTransferFunction = DXVA2_VideoTransFunc_22;
       break;
     case gfx::ColorSpace::TransferID::GAMMA28:
       format.VideoTransferFunction = DXVA2_VideoTransFunc_28;
       break;
     case gfx::ColorSpace::TransferID::LINEAR:
     case gfx::ColorSpace::TransferID::LINEAR_HDR:
       format.VideoTransferFunction = DXVA2_VideoTransFunc_10;
       break;
     case gfx::ColorSpace::TransferID::IEC61966_2_1:
       format.VideoTransferFunction = DXVA2_VideoTransFunc_sRGB;
       break;
 
-    case gfx::ColorSpace::TransferID::RESERVED0:
-    case gfx::ColorSpace::TransferID::UNSPECIFIED:
-    case gfx::ColorSpace::TransferID::RESERVED:
     case gfx::ColorSpace::TransferID::LOG:
     case gfx::ColorSpace::TransferID::LOG_SQRT:
     case gfx::ColorSpace::TransferID::IEC61966_2_4:
     case gfx::ColorSpace::TransferID::BT1361_ECG:
     case gfx::ColorSpace::TransferID::BT2020_10:
     case gfx::ColorSpace::TransferID::BT2020_12:
     case gfx::ColorSpace::TransferID::SMPTEST2084:
     case gfx::ColorSpace::TransferID::SMPTEST428_1:
     case gfx::ColorSpace::TransferID::ARIB_STD_B67:
-    case gfx::ColorSpace::TransferID::UNKNOWN:
+    case gfx::ColorSpace::TransferID::INVALID:
     case gfx::ColorSpace::TransferID::GAMMA24:
     case gfx::ColorSpace::TransferID::SMPTEST2084_NON_HDR:
     case gfx::ColorSpace::TransferID::CUSTOM:
       // Not handled
       break;
   }
 
   return format;
 }
 
 }  // namespace gfx