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      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 "SkBitmap.h"
     10 #include "SkCanvas.h"
     11 #include "SkString.h"
     12 
     13 class WritePixelsBench : public Benchmark {
     14 public:
     15     WritePixelsBench(SkColorType ct, SkAlphaType at)
     16         : fColorType(ct)
     17         , fAlphaType(at)
     18         , fName("writepix")
     19     {
     20         switch (ct) {
     21             case kRGBA_8888_SkColorType:
     22                 fName.append("_RGBA");
     23                 break;
     24             case kBGRA_8888_SkColorType:
     25                 fName.append("_BGRA");
     26                 break;
     27             default:
     28                 SkASSERT(0);
     29                 break;
     30         }
     31         switch (at) {
     32             case kPremul_SkAlphaType:
     33                 fName.append("_PM");
     34                 break;
     35             case kUnpremul_SkAlphaType:
     36                 fName.append("_UPM");
     37                 break;
     38             default:
     39                 SkASSERT(0);
     40                 break;
     41         }
     42     }
     43 
     44 protected:
     45     const char* onGetName() override {
     46         return fName.c_str();
     47     }
     48 
     49     void onDraw(int loops, SkCanvas* canvas) override {
     50         SkISize size = canvas->getBaseLayerSize();
     51 
     52         canvas->clear(0xFFFF0000);
     53 
     54         SkBitmap bmp;
     55         bmp.allocN32Pixels(size.width(), size.height());
     56         canvas->readPixels(bmp, 0, 0);
     57 
     58         SkImageInfo info = SkImageInfo::Make(bmp.width(), bmp.height(), fColorType, fAlphaType);
     59 
     60         for (int loop = 0; loop < loops; ++loop) {
     61             canvas->writePixels(info, bmp.getPixels(), bmp.rowBytes(), 0, 0);
     62         }
     63     }
     64 
     65 private:
     66     SkColorType fColorType;
     67     SkAlphaType fAlphaType;
     68     SkString    fName;
     69 
     70     typedef Benchmark INHERITED;
     71 };
     72 
     73 //////////////////////////////////////////////////////////////////////////////
     74 
     75 DEF_BENCH(return new WritePixelsBench(kRGBA_8888_SkColorType, kPremul_SkAlphaType);)
     76 DEF_BENCH(return new WritePixelsBench(kRGBA_8888_SkColorType, kUnpremul_SkAlphaType);)
     77