1 /*
2  * Copyright 2013 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #include "Benchmark.h"
9 #include "SkBlurMask.h"
10 #include "SkCanvas.h"
11 #include "SkPaint.h"
12 #include "SkRandom.h"
13 #include "SkShader.h"
14 #include "SkString.h"
15 
16 class BitmapScaleBench: public Benchmark {
17     int         fLoopCount;
18     int         fInputSize;
19     int         fOutputSize;
20     SkString    fName;
21 
22 public:
BitmapScaleBench(int is,int os)23     BitmapScaleBench( int is, int os)  {
24         fInputSize = is;
25         fOutputSize = os;
26 
27         fLoopCount = 20;
28     }
29 
30 protected:
31 
32     SkBitmap fInputBitmap, fOutputBitmap;
33     SkMatrix fMatrix;
34 
onGetName()35     virtual const char* onGetName() {
36         return fName.c_str();
37     }
38 
inputSize() const39     int inputSize() const {
40         return fInputSize;
41     }
42 
outputSize() const43     int outputSize() const {
44         return fOutputSize;
45     }
46 
scale() const47     float scale() const {
48         return float(outputSize())/inputSize();
49     }
50 
onGetSize()51     SkIPoint onGetSize() override {
52         return SkIPoint::Make( fOutputSize, fOutputSize );
53     }
54 
setName(const char * name)55     void setName(const char * name) {
56         fName.printf( "bitmap_scale_%s_%d_%d", name, fInputSize, fOutputSize );
57     }
58 
onPreDraw()59     virtual void onPreDraw() {
60         fInputBitmap.allocN32Pixels(fInputSize, fInputSize, true);
61         fInputBitmap.eraseColor(SK_ColorWHITE);
62 
63         fOutputBitmap.allocN32Pixels(fOutputSize, fOutputSize, true);
64 
65         fMatrix.setScale( scale(), scale() );
66     }
67 
onDraw(const int loops,SkCanvas *)68     virtual void onDraw(const int loops, SkCanvas*) {
69         SkPaint paint;
70         this->setupPaint(&paint);
71 
72         preBenchSetup();
73 
74         for (int i = 0; i < loops; i++) {
75             doScaleImage();
76         }
77     }
78 
79     virtual void doScaleImage() = 0;
preBenchSetup()80     virtual void preBenchSetup() {}
81 private:
82     typedef Benchmark INHERITED;
83 };
84 
85 class BitmapFilterScaleBench: public BitmapScaleBench {
86  public:
BitmapFilterScaleBench(int is,int os)87     BitmapFilterScaleBench( int is, int os) : INHERITED(is, os) {
88         setName( "filter" );
89     }
90 protected:
doScaleImage()91     void doScaleImage() override {
92         SkCanvas canvas( fOutputBitmap );
93         SkPaint paint;
94 
95         paint.setFilterQuality(kHigh_SkFilterQuality);
96         fInputBitmap.notifyPixelsChanged();
97         canvas.concat(fMatrix);
98         canvas.drawBitmap(fInputBitmap, 0, 0, &paint );
99     }
100 private:
101     typedef BitmapScaleBench INHERITED;
102 };
103 
104 DEF_BENCH(return new BitmapFilterScaleBench(10, 90);)
105 DEF_BENCH(return new BitmapFilterScaleBench(30, 90);)
106 DEF_BENCH(return new BitmapFilterScaleBench(80, 90);)
107 DEF_BENCH(return new BitmapFilterScaleBench(90, 90);)
108 DEF_BENCH(return new BitmapFilterScaleBench(90, 80);)
109 DEF_BENCH(return new BitmapFilterScaleBench(90, 30);)
110 DEF_BENCH(return new BitmapFilterScaleBench(90, 10);)
111 DEF_BENCH(return new BitmapFilterScaleBench(256, 64);)
112 DEF_BENCH(return new BitmapFilterScaleBench(64, 256);)
113