add kRGBA_F16_SkColorType

include/core/SkImageInfo.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkImageInfo_DEFINED
 #define SkImageInfo_DEFINED
 
@@ skipping 55 matching lines @@
  */
 enum SkColorType {
     kUnknown_SkColorType,
     kAlpha_8_SkColorType,
     kRGB_565_SkColorType,
     kARGB_4444_SkColorType,
     kRGBA_8888_SkColorType,
     kBGRA_8888_SkColorType,
     kIndex_8_SkColorType,
     kGray_8_SkColorType,
+    kRGBA_F16_SkColorType,
 
-    kLastEnum_SkColorType = kGray_8_SkColorType,
+    kLastEnum_SkColorType = kRGBA_F16_SkColorType,
 
 #if SK_PMCOLOR_BYTE_ORDER(B,G,R,A)
     kN32_SkColorType = kBGRA_8888_SkColorType,
 #elif SK_PMCOLOR_BYTE_ORDER(R,G,B,A)
     kN32_SkColorType = kRGBA_8888_SkColorType,
 #else
     #error "SK_*32_SHFIT values must correspond to BGRA or RGBA byte order"
 #endif
 };
 
 static int SkColorTypeBytesPerPixel(SkColorType ct) {
     static const uint8_t gSize[] = {
         0,  // Unknown
         1,  // Alpha_8
         2,  // RGB_565
         2,  // ARGB_4444
         4,  // RGBA_8888
         4,  // BGRA_8888
         1,  // kIndex_8
         1,  // kGray_8
+        8,  // kRGBA_F16
     };
     static_assert(SK_ARRAY_COUNT(gSize) == (size_t)(kLastEnum_SkColorType + 1),
                   "size_mismatch_with_SkColorType_enum");
 
     SkASSERT((size_t)ct < SK_ARRAY_COUNT(gSize));
     return gSize[ct];
 }
 
 static inline size_t SkColorTypeMinRowBytes(SkColorType ct, int width) {
     return width * SkColorTypeBytesPerPixel(ct);
 }
 
 static inline bool SkColorTypeIsValid(unsigned value) {
     return value <= kLastEnum_SkColorType;
 }
 
 static inline size_t SkColorTypeComputeOffset(SkColorType ct, int x, int y, size_t rowBytes) {
     int shift = 0;
     switch (SkColorTypeBytesPerPixel(ct)) {
+        case 8: shift = 3; break;
         case 4: shift = 2; break;
         case 2: shift = 1; break;
         case 1: shift = 0; break;
         default: return 0;
     }
     return y * rowBytes + (x << shift);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
@@ skipping 182 matching lines @@
     SkImageInfo(int width, int height, SkColorType ct, SkAlphaType at, SkColorProfileType pt)
         : fWidth(width)
         , fHeight(height)
         , fColorType(ct)
         , fAlphaType(at)
         , fProfileType(pt)
     {}
 };
 
 #endif