BitmapScaleBench.cpp

/*
 * Copyright 2013 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "Benchmark.h"
#include "SkBlurMask.h"
#include "SkCanvas.h"
#include "SkPaint.h"
#include "SkRandom.h"
#include "SkShader.h"
#include "SkString.h"
#include "SkBitmapScaler.h"

class PixmapScalerBench: public Benchmark {
    SkBitmapScaler::ResizeMethod    fMethod;
    SkString                        fName;
    SkBitmap                        fSrc;
    int                             fWidth;
    int                             fHeight;

public:
    PixmapScalerBench(SkBitmapScaler::ResizeMethod method, int width, int height, const char suffix[]) :
        fMethod(method)
    {
        fName.printf("pixmapscaler %dx%d %s", width, height, suffix);
        fWidth = width;
        fHeight = height;
    }

protected:
    const char* onGetName() override {
        return fName.c_str();
    }

    SkIPoint onGetSize() override { return{ 100, 100 }; }

    bool isSuitableFor(Backend backend) override {
        return backend == kNonRendering_Backend;
    }

    void onDelayedSetup() override {
        fSrc.allocN32Pixels(2560, 1600);
        fSrc.eraseColor(SK_ColorWHITE);
    }

    void onDraw(int loops, SkCanvas*) override {
        SkPixmap src, dst;
        SkBitmap fDst;
        fSrc.peekPixels(&src);
        fDst.allocN32Pixels(fWidth, fHeight);
        fDst.peekPixels(&dst);
        for (int i = 0; i < loops; i++) {
            SkBitmapScaler::Resize(dst, src, fMethod);
        }
    }

private:
    typedef Benchmark INHERITED;
};

DEF_BENCH( return new PixmapScalerBench(SkBitmapScaler::RESIZE_LANCZOS3, 5478, 3424, "6lzs");  )
DEF_BENCH( return new PixmapScalerBench(SkBitmapScaler::RESIZE_MITCHELL, 5478, 3424, "4bic"); )
DEF_BENCH( return new PixmapScalerBench(SkBitmapScaler::RESIZE_TRIANGLE, 5478, 3424, "2bil"); )

DEF_BENCH( return new PixmapScalerBench(SkBitmapScaler::RESIZE_LANCZOS3, 2048, 1280, "6lzs");  )
DEF_BENCH( return new PixmapScalerBench(SkBitmapScaler::RESIZE_MITCHELL, 2048, 1280, "4bic"); )
DEF_BENCH( return new PixmapScalerBench(SkBitmapScaler::RESIZE_TRIANGLE, 2048, 1280, "2bil"); )

DEF_BENCH( return new PixmapScalerBench(SkBitmapScaler::RESIZE_LANCZOS3, 320, 200, "6lzs");  )
DEF_BENCH( return new PixmapScalerBench(SkBitmapScaler::RESIZE_MITCHELL, 320, 200, "4bic"); )
DEF_BENCH( return new PixmapScalerBench(SkBitmapScaler::RESIZE_TRIANGLE, 320, 200, "2bil"); )

DEF_BENCH( return new PixmapScalerBench(SkBitmapScaler::RESIZE_LANCZOS3, 26, 16, "6lzs");  )
DEF_BENCH( return new PixmapScalerBench(SkBitmapScaler::RESIZE_MITCHELL, 26, 16, "4bic"); )
DEF_BENCH( return new PixmapScalerBench(SkBitmapScaler::RESIZE_TRIANGLE, 26, 16, "2bil"); )