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zachr@google.comd6585682013-07-17 19:29:19 +00001/*
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#ifndef SkDifferentPixelsMetric_DEFINED
9#define SkDifferentPixelsMetric_DEFINED
10
11#include "SkTDArray.h"
12
13#if SK_SUPPORT_OPENCL
14#include "SkCLImageDiffer.h"
15#else
16#include "SkImageDiffer.h"
17#endif
18
19/**
20 * A differ that measures the percentage of different corresponding pixels. If the two images are
21 * not the same size or have no pixels, the result will always be zero.
22 */
23class SkDifferentPixelsMetric :
24#if SK_SUPPORT_OPENCL
25 public SkCLImageDiffer {
26#else
27 public SkImageDiffer {
28#endif
29public:
30 virtual const char* getName() SK_OVERRIDE;
31 virtual int queueDiff(SkBitmap* baseline, SkBitmap* test) SK_OVERRIDE;
32 virtual void deleteDiff(int id) SK_OVERRIDE;
33 virtual bool isFinished(int id) SK_OVERRIDE;
34 virtual double getResult(int id) SK_OVERRIDE;
35 virtual int getPointsOfInterestCount(int id) SK_OVERRIDE;
36 virtual SkIPoint* getPointsOfInterest(int id) SK_OVERRIDE;
37
38protected:
39#if SK_SUPPORT_OPENCL
40 virtual bool onInit() SK_OVERRIDE;
41#endif
42
43private:
44 struct QueuedDiff;
45
46 SkTDArray<QueuedDiff> fQueuedDiffs;
47
48#if SK_SUPPORT_OPENCL
49 cl_kernel fKernel;
50
51 typedef SkCLImageDiffer INHERITED;
52#else
53 typedef SkImageDiffer INHERITED;
54#endif
55};
56
57#endif