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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 #ifndef SkDiffContext_DEFINED | |
| 9 #define SkDiffContext_DEFINED | |
| 10 | |
| 11 #include "SkString.h" | |
| 12 #include "SkTArray.h" | |
| 13 #include "SkTDArray.h" | |
| 14 | |
| 15 class SkWStream; | |
| 16 class SkImageDiffer; | |
| 17 | |
| 18 /** | |
| 19 * Collects records of diffs and outputs them as JSON. | |
| 20 */ | |
| 21 class SkDiffContext { | |
| 22 public: | |
| 23 SkDiffContext(); | |
| 24 ~SkDiffContext(); | |
| 25 | |
| 26 /** | |
| 27 * Sets the differs to be used in each diff. Already started diffs will not
retroactively use | |
| 28 * these. | |
| 29 * @param differs An array of differs to use. The array is copied, but not t
he differs | |
| 30 * themselves. | |
| 31 */ | |
| 32 void setDiffers(const SkTDArray<SkImageDiffer*>& differs); | |
| 33 | |
| 34 /** | |
| 35 * Compares two directories of images with the given differ | |
| 36 * @param baselinePath The baseline directory's path | |
| 37 * @param testPath The test directory's path | |
| 38 */ | |
| 39 void diffDirectories(const char baselinePath[], const char testPath[]); | |
| 40 | |
| 41 /** | |
| 42 * Compares two sets of images identified by glob style patterns with the gi
ven differ | |
| 43 * @param baselinePattern A pattern for baseline files | |
| 44 * @param testPattern A pattern for test files that matches each file of
the baseline file | |
| 45 */ | |
| 46 void diffPatterns(const char baselinePattern[], const char testPattern[]); | |
| 47 | |
| 48 /** | |
| 49 * Compares the images at the given paths | |
| 50 * @param baselinePath The baseline file path | |
| 51 * @param testPath The matching test file path | |
| 52 */ | |
| 53 void addDiff(const char* baselinePath, const char* testPath); | |
| 54 | |
| 55 /** | |
| 56 * Output the records of each diff in JSON. | |
| 57 * | |
| 58 * The format of the JSON document is one top level array named "records". | |
| 59 * Each record in the array is an object with both a "baselinePath" and "tes
tPath" string field. | |
| 60 * They also have an array named "diffs" with each element being one diff re
cord for the two | |
| 61 * images indicated in the above field. | |
| 62 * A diff record includes: | |
| 63 * "differName" : string name of the diff metric used | |
| 64 * "result" : numerical result of the diff | |
| 65 * "pointsOfInterest" : an array of coordinates (stored as a 2-array of i
nts) of interesting | |
| 66 * points | |
| 67 * | |
| 68 * Here is an example: | |
| 69 * | |
| 70 * { | |
| 71 * "records": [ | |
| 72 * { | |
| 73 * "baselinePath": "queue.png", | |
| 74 * "testPath": "queue.png", | |
| 75 * "diffs": [ | |
| 76 * { | |
| 77 * "differName": "different_pixels", | |
| 78 * "result": 1, | |
| 79 * "pointsOfInterest": [ | |
| 80 * [285,279], | |
| 81 * ] | |
| 82 * } | |
| 83 * ] | |
| 84 * } | |
| 85 * ] | |
| 86 * } | |
| 87 * | |
| 88 * @param stream The stream to output the diff to | |
| 89 * @param useJSONP True to adding padding to the JSON output to make it cros
s-site requestable. | |
| 90 */ | |
| 91 void outputRecords(SkWStream& stream, bool useJSONP); | |
| 92 | |
| 93 private: | |
| 94 struct DiffData { | |
| 95 const char* fDiffName; | |
| 96 double fResult; | |
| 97 SkTDArray<SkIPoint> fPointsOfInterest; | |
| 98 }; | |
| 99 | |
| 100 struct DiffRecord { | |
| 101 SkString fBaselinePath; | |
| 102 SkString fTestPath; | |
| 103 SkTArray<DiffData> fDiffs; | |
| 104 DiffRecord* fNext; | |
| 105 }; | |
| 106 | |
| 107 // We use linked list for the records so that their pointers remain stable.
A resizable array | |
| 108 // might change its pointers, which would make it harder for async diffs to
record their | |
| 109 // results. | |
| 110 DiffRecord * fRecords; | |
| 111 | |
| 112 SkImageDiffer** fDiffers; | |
| 113 int fDifferCount; | |
| 114 }; | |
| 115 | |
| 116 #endif | |
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