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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 "SkBenchmark.h"
      9 #include "SkBitmap.h"
     10 #include "SkData.h"
     11 #include "SkForceLinking.h"
     12 #include "SkImageDecoder.h"
     13 #include "SkOSFile.h"
     14 #include "SkStream.h"
     15 #include "SkString.h"
     16 
     17 __SK_FORCE_IMAGE_DECODER_LINKING;
     18 
     19 class SkCanvas;
     20 
     21 class ImageDecodeBench : public SkBenchmark {
     22 public:
     23     ImageDecodeBench(void* p, const char* filename)
     24     : INHERITED(p)
     25     , fName("image_decode_")
     26     , fFilename(filename)
     27     , fStream()
     28     , fValid(false) {
     29         fName.append(SkOSPath::SkBasename(filename));
     30         fIsRendering = false;
     31     }
     32 
     33 protected:
     34     virtual const char* onGetName() SK_OVERRIDE {
     35         return fName.c_str();
     36     }
     37 
     38     virtual void onPreDraw() SK_OVERRIDE {
     39         SkFILEStream fileStream(fFilename.c_str());
     40         fValid = fileStream.isValid() && fileStream.getLength() > 0;
     41         if (fValid) {
     42             const size_t size = fileStream.getLength();
     43             void* data = sk_malloc_throw(size);
     44             if (fileStream.read(data, size) < size) {
     45                 fValid = false;
     46             } else {
     47                 SkAutoTUnref<SkData> skdata(SkData::NewFromMalloc(data, size));
     48                 fStream.setData(skdata.get());
     49             }
     50         }
     51     }
     52 
     53     virtual void onDraw(SkCanvas*) SK_OVERRIDE {
     54 #ifdef SK_DEBUG
     55         if (!fValid) {
     56             SkDebugf("stream was invalid: %s\n", fName.c_str());
     57             return;
     58         }
     59 #endif
     60         // Decode a bunch of times
     61         SkBitmap bm;
     62         for (int i = 0; i < SkBENCHLOOP(1000); ++i) {
     63             SkDEBUGCODE(bool success =) SkImageDecoder::DecodeStream(&fStream, &bm);
     64 #ifdef SK_DEBUG
     65             if (!success) {
     66                 SkDebugf("failed to decode %s\n", fName.c_str());
     67                 return;
     68             }
     69 #endif
     70             SkDEBUGCODE(success =) fStream.rewind();
     71 #ifdef SK_DEBUG
     72             if (!success) {
     73                 SkDebugf("failed to rewind %s\n", fName.c_str());
     74                 return;
     75             }
     76 #endif
     77         }
     78     }
     79 
     80 private:
     81     SkString        fName;
     82     const SkString  fFilename;
     83     SkMemoryStream  fStream;
     84     bool            fValid;
     85 
     86     typedef SkBenchmark INHERITED;
     87 };
     88 
     89 // These are files which call decodePalette
     90 //DEF_BENCH( return SkNEW_ARGS(ImageDecodeBench, (p, "/usr/local/google/home/scroggo/Downloads/images/hal_163x90.png")); )
     91 //DEF_BENCH( return SkNEW_ARGS(ImageDecodeBench, (p, "/usr/local/google/home/scroggo/Downloads/images/box_19_top-left.png")); )
     92