michael@0: /*
michael@0:  * Copyright 2011 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #ifndef SkBlitMask_DEFINED
michael@0: #define SkBlitMask_DEFINED
michael@0: 
michael@0: #include "SkBitmap.h"
michael@0: #include "SkColor.h"
michael@0: #include "SkMask.h"
michael@0: 
michael@0: class SkBlitMask {
michael@0: public:
michael@0:     /**
michael@0:      *  Returns true if the device config and mask format were supported.
michael@0:      *  else return false (nothing was drawn)
michael@0:      */
michael@0:     static bool BlitColor(const SkBitmap& device, const SkMask& mask,
michael@0:                           const SkIRect& clip, SkColor color);
michael@0: 
michael@0:     /**
michael@0:      *  Function pointer that blits the mask into a device (dst) colorized
michael@0:      *  by color. The number of pixels to blit is specified by width and height,
michael@0:      *  but each scanline is offset by dstRB (rowbytes) and srcRB respectively.
michael@0:      */
michael@0:     typedef void (*ColorProc)(void* dst, size_t dstRB,
michael@0:                               const void* mask, size_t maskRB,
michael@0:                               SkColor color, int width, int height);
michael@0: 
michael@0:     /**
michael@0:      *  Function pointer that blits a row of mask(lcd16) into a row of dst
michael@0:      *  colorized by a single color. The number of pixels to blit is specified
michael@0:      *  by width.
michael@0:      */
michael@0:     typedef void (*BlitLCD16RowProc)(SkPMColor dst[], const uint16_t src[],
michael@0:                                      SkColor color, int width,
michael@0:                                      SkPMColor opaqueDst);
michael@0: 
michael@0:     /**
michael@0:      *  Function pointer that blits a row of src colors through a row of a mask
michael@0:      *  onto a row of dst colors. The RowFactory that returns this function ptr
michael@0:      *  will have been told the formats for the mask and the dst.
michael@0:      */
michael@0:     typedef void (*RowProc)(void* dst, const void* mask,
michael@0:                             const SkPMColor* src, int width);
michael@0: 
michael@0:     /**
michael@0:      *  Public entry-point to return a blitmask ColorProc.
michael@0:      *  May return NULL if config or format are not supported.
michael@0:      */
michael@0:     static ColorProc ColorFactory(SkBitmap::Config, SkMask::Format, SkColor);
michael@0: 
michael@0:     /**
michael@0:      *  Return either platform specific optimized blitmask ColorProc,
michael@0:      *  or NULL if no optimized routine is available.
michael@0:      */
michael@0:     static ColorProc PlatformColorProcs(SkBitmap::Config, SkMask::Format, SkColor);
michael@0: 
michael@0:     /**
michael@0:      *  Public entry-point to return a blitcolor BlitLCD16RowProc.
michael@0:      */
michael@0:     static BlitLCD16RowProc BlitLCD16RowFactory(bool isOpaque);
michael@0: 
michael@0:     /**
michael@0:      *  Return either platform specific optimized blitcolor BlitLCD16RowProc,
michael@0:      *  or NULL if no optimized routine is available.
michael@0:      */
michael@0:     static BlitLCD16RowProc PlatformBlitRowProcs16(bool isOpaque);
michael@0: 
michael@0:     enum RowFlags {
michael@0:         kSrcIsOpaque_RowFlag    = 1 << 0
michael@0:     };
michael@0: 
michael@0:     /**
michael@0:      *  Public entry-point to return a blitmask RowProc.
michael@0:      *  May return NULL if config or format are not supported.
michael@0:      */
michael@0:     static RowProc RowFactory(SkBitmap::Config, SkMask::Format, RowFlags);
michael@0: 
michael@0:     /**
michael@0:      *  Return either platform specific optimized blitmask RowProc,
michael@0:      *  or NULL if no optimized routine is available.
michael@0:      */
michael@0:     static RowProc PlatformRowProcs(SkBitmap::Config, SkMask::Format, RowFlags);
michael@0: };
michael@0: 
michael@0: #endif