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/*
* 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 "Resources.h"
#include "SkBitmap.h"
#include "SkData.h"
#include "SkForceLinking.h"
#include "SkImageDecoder.h"
#include "SkOSFile.h"
#include "SkStream.h"
#include "SkString.h"
__SK_FORCE_IMAGE_DECODER_LINKING;
class SkCanvas;
class SkipZeroesBench : public Benchmark {
public:
SkipZeroesBench(const char* filename, bool skipZeroes)
: fName("SkipZeroes_")
, fDecoder(NULL)
, fFilename(filename)
, fStream()
, fSkipZeroes(skipZeroes)
, fValid(false) {
fName.append(filename);
if (skipZeroes) {
fName.append("_skip_zeroes");
} else {
fName.append("_write_zeroes");
}
}
bool isSuitableFor(Backend backend) override {
return backend == kNonRendering_Backend;
}
protected:
const char* onGetName() override {
return fName.c_str();
}
void onPreDraw() override {
SkString resourcePath = GetResourcePath();
if (resourcePath.isEmpty()) {
fValid = false;
return;
}
SkString fullPath = SkOSPath::Join(resourcePath.c_str(), fFilename.c_str());
SkFILEStream fileStream(fullPath.c_str());
fValid = fileStream.isValid() && fileStream.getLength() > 0;
if (fValid) {
const size_t size = fileStream.getLength();
void* data = sk_malloc_throw(size);
if (fileStream.read(data, size) < size) {
fValid = false;
} else {
SkAutoTUnref<SkData> skdata(SkData::NewFromMalloc(data, size));
fStream.setData(skdata.get());
fDecoder.reset(SkImageDecoder::Factory(&fStream));
if (fDecoder.get()) {
fDecoder->setSkipWritingZeroes(fSkipZeroes);
} else {
fValid = false;
}
}
}
}
void onDraw(const int loops, SkCanvas*) override {
if (!fValid) {
#ifdef SK_DEBUG
SkDebugf("stream was invalid: %s\n", fFilename.c_str());
#endif
return;
}
// Decode a bunch of times
SkBitmap bm;
for (int i = 0; i < loops; ++i) {
SkDEBUGCODE(SkImageDecoder::Result result =) fDecoder->decode(&fStream, &bm,
SkImageDecoder::kDecodePixels_Mode);
#ifdef SK_DEBUG
if (SkImageDecoder::kFailure == result) {
SkDebugf("failed to decode %s\n", fFilename.c_str());
return;
}
#endif
SkDEBUGCODE(bool success =) fStream.rewind();
#ifdef SK_DEBUG
if (!success) {
SkDebugf("failed to rewind %s\n", fFilename.c_str());
return;
}
#endif
}
}
private:
SkString fName;
SkAutoTDelete<SkImageDecoder> fDecoder;
const SkString fFilename;
SkMemoryStream fStream;
bool fSkipZeroes;
bool fValid;
typedef Benchmark INHERITED;
};
// Enable the true version once the feature is checked in.
DEF_BENCH( return SkNEW_ARGS(SkipZeroesBench, ("arrow.png", true)));
DEF_BENCH( return SkNEW_ARGS(SkipZeroesBench, ("arrow.png", false)));
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