Index: skia/images/SkScaledBitmapSampler.h |
=================================================================== |
--- skia/images/SkScaledBitmapSampler.h (revision 16859) |
+++ skia/images/SkScaledBitmapSampler.h (working copy) |
@@ -1,55 +0,0 @@ |
-#ifndef SkScaledBitmapSampler_DEFINED |
-#define SkScaledBitmapSampler_DEFINED |
- |
-#include "SkTypes.h" |
- |
-class SkBitmap; |
- |
-class SkScaledBitmapSampler { |
-public: |
- SkScaledBitmapSampler(int origWidth, int origHeight, int cellSize); |
- |
- int scaledWidth() const { return fScaledWidth; } |
- int scaledHeight() const { return fScaledHeight; } |
- |
- int srcY0() const { return fY0; } |
- int srcDY() const { return fDY; } |
- |
- enum SrcConfig { |
- kGray, // 1 byte per pixel |
- kIndex, // 1 byte per pixel |
- kRGB, // 3 bytes per pixel |
- kRGBX, // 4 byes per pixel (ignore 4th) |
- kRGBA // 4 bytes per pixel |
- }; |
- |
- // Given a dst bitmap (with pixels already allocated) and a src-config, |
- // prepares iterator to process the src colors and write them into dst. |
- // Returns false if the request cannot be fulfulled. |
- bool begin(SkBitmap* dst, SrcConfig sc, bool doDither); |
- // call with row of src pixels, for y = 0...scaledHeight-1. |
- // returns true if the row had non-opaque alpha in it |
- bool next(const uint8_t* SK_RESTRICT src); |
- |
-private: |
- int fScaledWidth; |
- int fScaledHeight; |
- |
- int fX0; // first X coord to sample |
- int fY0; // first Y coord (scanline) to sample |
- int fDX; // step between X samples |
- int fDY; // step between Y samples |
- |
- typedef bool (*RowProc)(void* SK_RESTRICT dstRow, |
- const uint8_t* SK_RESTRICT src, |
- int width, int deltaSrc, int y); |
- |
- // setup state |
- char* fDstRow; // points into bitmap's pixels |
- int fDstRowBytes; |
- int fCurrY; // used for dithering |
- int fSrcPixelSize; // 1, 3, 4 |
- RowProc fRowProc; |
-}; |
- |
-#endif |