diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/include/core/SkBlitRow.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/include/core/SkBlitRow.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkBlitRow_DEFINED
+#define SkBlitRow_DEFINED
+
+#include "SkBitmap.h"
+#include "SkColor.h"
+
+class SkBlitRow {
+public:
+    enum Flags16 {
+        //! If set, the alpha parameter will be != 255
+        kGlobalAlpha_Flag   = 0x01,
+        //! If set, the src colors may have alpha != 255
+        kSrcPixelAlpha_Flag = 0x02,
+        //! If set, the resulting 16bit colors should be dithered
+        kDither_Flag        = 0x04
+    };
+
+    /** Function pointer that reads a scanline of src SkPMColors, and writes
+        a corresponding scanline of 16bit colors (specific format based on the
+        config passed to the Factory.
+
+        The x,y params are useful just for dithering
+
+        @param alpha A global alpha to be applied to all of the src colors
+        @param x The x coordinate of the beginning of the scanline
+        @param y THe y coordinate of the scanline
+     */
+    typedef void (*Proc)(uint16_t* dst,
+                         const SkPMColor* src,
+                         int count, U8CPU alpha, int x, int y);
+
+    static Proc Factory(unsigned flags, SkBitmap::Config);
+
+    ///////////// D32 version
+
+    enum Flags32 {
+        kGlobalAlpha_Flag32     = 1 << 0,
+        kSrcPixelAlpha_Flag32   = 1 << 1
+    };
+
+    /** Function pointer that blends 32bit colors onto a 32bit destination.
+        @param dst  array of dst 32bit colors
+        @param src  array of src 32bit colors (w/ or w/o alpha)
+        @param count number of colors to blend
+        @param alpha global alpha to be applied to all src colors
+     */
+    typedef void (*Proc32)(uint32_t* dst,
+                         const SkPMColor* src,
+                         int count, U8CPU alpha);
+
+    static Proc32 Factory32(unsigned flags32);
+
+   /** Function pointer that blends a single color with a row of 32-bit colors
+       onto a 32-bit destination
+   */
+   typedef void (*ColorProc)(SkPMColor* dst, const SkPMColor* src, int count,
+                             SkPMColor color);
+
+    /** Blend a single color onto a row of S32 pixels, writing the result
+        into a row of D32 pixels. src and dst may be the same memory, but
+        if they are not, they may not overlap.
+     */
+    static void Color32(SkPMColor dst[], const SkPMColor src[],
+                        int count, SkPMColor color);
+
+    //! Public entry-point to return a blit function ptr
+    static ColorProc ColorProcFactory();
+
+    /** Function pointer that blends a single color onto a 32-bit rectangle.  */
+    typedef void (*ColorRectProc)(SkPMColor* dst, int width, int height,
+                                  size_t rowBytes, SkPMColor color);
+
+    /** Blend a single color into a rectangle of D32 pixels. */
+    static void ColorRect32(SkPMColor* dst, int width, int height,
+                            size_t rowBytes, SkPMColor color);
+
+    //! Public entry-point to return a blit function ptr
+    static ColorRectProc ColorRectProcFactory();
+
+    /** These static functions are called by the Factory and Factory32
+        functions, and should return either NULL, or a
+        platform-specific function-ptr to be used in place of the
+        system default.
+     */
+
+    static Proc32 PlatformProcs32(unsigned flags);
+    static Proc PlatformProcs565(unsigned flags);
+    static ColorProc PlatformColorProc();
+
+private:
+    enum {
+        kFlags16_Mask = 7,
+        kFlags32_Mask = 3
+    };
+};
+
+#endif