Delete SkImageDecoder

src/images/SkScaledBitmapSampler.h

-
-/*
- * 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 SkScaledBitmapSampler_DEFINED
-#define SkScaledBitmapSampler_DEFINED
-
-#include "SkTypes.h"
-#include "SkColor.h"
-#include "SkImageDecoder.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 srcDX() const { return fDX; }
-    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
-        kRGB_565 // 2 bytes per pixel
-    };
-
-    struct Options {
-        bool fDither;
-        bool fPremultiplyAlpha;
-        bool fSkipZeros;
-        explicit Options(const SkImageDecoder &dec)
-            : fDither(dec.getDitherImage())
-            , fPremultiplyAlpha(!dec.getRequireUnpremultipliedColors())
-            , fSkipZeros(dec.getSkipWritingZeroes())
-            { }
-    };
-
-    // 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, const SkImageDecoder& decoder,
-               const SkPMColor* = nullptr);
-    bool begin(SkBitmap* dst, SrcConfig sc, const Options& opts,
-               const SkPMColor* = nullptr);
-    // 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);
-
-    // Like next(), but specifies the y value of the source row, so the
-    // rows can come in any order. If the row is not part of the output
-    // sample, it will be skipped. Only sampleInterlaced OR next should
-    // be called for one SkScaledBitmapSampler.
-    bool sampleInterlaced(const uint8_t* SK_RESTRICT src, int srcY);
-
-    typedef bool (*RowProc)(void* SK_RESTRICT dstRow,
-                            const uint8_t* SK_RESTRICT src,
-                            int width, int deltaSrc, int y,
-                            const SkPMColor[]);
-
-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
-
-#ifdef SK_DEBUG
-    // Keep track of whether the caller is using next or sampleInterlaced.
-    // Only one can be used per sampler.
-    enum SampleMode {
-        kUninitialized_SampleMode,
-        kConsecutive_SampleMode,
-        kInterlaced_SampleMode,
-    };
-
-    SampleMode fSampleMode;
-#endif
-
-    // setup state
-    char*   fDstRow; // points into bitmap's pixels
-    size_t  fDstRowBytes;
-    int     fCurrY; // used for dithering
-    int     fSrcPixelSize;  // 1, 3, 4
-    RowProc fRowProc;
-
-    // optional reference to the src colors if the src is a palette model
-    const SkPMColor* fCTable;
-
-#ifdef SK_DEBUG
-    // Helper class allowing a test to have access to fRowProc.
-    friend class RowProcTester;
-#endif
-};
-
-#endif