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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     : fName("image_decode_")
     25     , fFilename(filename)
     26     , fStream()
     27     , fValid(false) {
     28         fName.append(SkOSPath::SkBasename(filename));
     29     }
     30 
     31     virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
     32         return backend == kNonRendering_Backend;
     33     }
     34 
     35 protected:
     36     virtual const char* onGetName() SK_OVERRIDE {
     37         return fName.c_str();
     38     }
     39 
     40     virtual void onPreDraw() SK_OVERRIDE {
     41         SkFILEStream fileStream(fFilename.c_str());
     42         fValid = fileStream.isValid() && fileStream.getLength() > 0;
     43         if (fValid) {
     44             const size_t size = fileStream.getLength();
     45             void* data = sk_malloc_throw(size);
     46             if (fileStream.read(data, size) < size) {
     47                 fValid = false;
     48             } else {
     49                 SkAutoTUnref<SkData> skdata(SkData::NewFromMalloc(data, size));
     50                 fStream.setData(skdata.get());
     51             }
     52         }
     53     }
     54 
     55     virtual void onDraw(const int loops, SkCanvas*) SK_OVERRIDE {
     56 #ifdef SK_DEBUG
     57         if (!fValid) {
     58             SkDebugf("stream was invalid: %s\n", fName.c_str());
     59             return;
     60         }
     61 #endif
     62         // Decode a bunch of times
     63         SkBitmap bm;
     64         for (int i = 0; i < loops; ++i) {
     65             SkDEBUGCODE(bool success =) SkImageDecoder::DecodeStream(&fStream, &bm);
     66 #ifdef SK_DEBUG
     67             if (!success) {
     68                 SkDebugf("failed to decode %s\n", fName.c_str());
     69                 return;
     70             }
     71 #endif
     72             SkDEBUGCODE(success =) fStream.rewind();
     73 #ifdef SK_DEBUG
     74             if (!success) {
     75                 SkDebugf("failed to rewind %s\n", fName.c_str());
     76                 return;
     77             }
     78 #endif
     79         }
     80     }
     81 
     82 private:
     83     SkString        fName;
     84     const SkString  fFilename;
     85     SkMemoryStream  fStream;
     86     bool            fValid;
     87 
     88     typedef SkBenchmark INHERITED;
     89 };
     90 
     91 // These are files which call decodePalette
     92 //DEF_BENCH( return SkNEW_ARGS(ImageDecodeBench, ("/usr/local/google/home/scroggo/Downloads/images/hal_163x90.png")); )
     93 //DEF_BENCH( return SkNEW_ARGS(ImageDecodeBench, ("/usr/local/google/home/scroggo/Downloads/images/box_19_top-left.png")); )
     94