skia2/bench/subset/SubsetSingleBench.h
msarett b23e6aa676 Subset decoding benchmarks
It was my goal to create benchmarks that could measure all
of the use cases that we have identified.  I think single
subsets, translating, and scaling are the important ones.

It might be a good idea to discuss the document in greater
detail as well.  I just wanted to share this to aid the
discussion.
https://docs.google.com/a/google.com/document/d/1OxW96GDMAlw6dnzNXmiNX-F9oDBBlGXzSsgd0DMIkbI/edit?usp=sharing

BUG=skia:

Review URL: https://codereview.chromium.org/1160953002
2015-06-09 13:56:10 -07:00

47 lines
1.3 KiB
C++

/*
* Copyright 2015 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 "SkImageDecoder.h"
#include "SkImageInfo.h"
#include "SkStream.h"
#include "SkString.h"
/*
*
* This benchmark is designed to test the performance of subset decoding.
* It uses an input width, height, left, and top to decode a single subset.
*
*/
class SubsetSingleBench : public Benchmark {
public:
SubsetSingleBench(const SkString& path,
SkColorType colorType,
uint32_t subsetWidth,
uint32_t subsetHeight,
uint32_t offsetLeft,
uint32_t offsetTop,
bool useCodec);
protected:
const char* onGetName() override;
bool isSuitableFor(Backend backend) override;
void onDraw(const int n, SkCanvas* canvas) override;
private:
SkString fName;
SkColorType fColorType;
const uint32_t fSubsetWidth;
const uint32_t fSubsetHeight;
const uint32_t fOffsetLeft;
const uint32_t fOffsetTop;
const bool fUseCodec;
SkAutoTDelete<SkMemoryStream> fStream;
typedef Benchmark INHERITED;
};