1/*
2 * Copyright 2012 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 skdiff_utils_DEFINED
9#define skdiff_utils_DEFINED
10
11#include "tools/skdiff/skdiff.h"
12
13class SkBitmap;
14class SkData;
15class SkString;
16
17/** Returns true if the two buffers passed in are both non-nullptr,
18 *  have the same length, and contain exactly the same byte values.
19 */
20bool are_buffers_equal(SkData* skdata1, SkData* skdata2);
21
22/** Reads the file at the given path and returns its complete contents as an
23 *  SkData object (or returns nullptr on error).
24 */
25sk_sp<SkData> read_file(const char* file_path);
26
27/** Decodes the fileBits into the resource.fBitmap. Returns false on failure. */
28bool get_bitmap(sk_sp<SkData> fileBits, DiffResource& resource, bool sizeOnly,
29                bool ignoreColorSpace);
30
31/** Writes the bitmap as a PNG to the path specified. */
32bool write_bitmap(const SkString& path, const SkBitmap& bitmap);
33
34/** Given an image filename, returns the name of the file containing
35 *  the associated difference image.
36 */
37SkString filename_to_diff_filename(const SkString& filename);
38
39/** Given an image filename, returns the name of the file containing
40 *  the "white" difference image.
41 */
42SkString filename_to_white_filename(const SkString& filename);
43
44/** Calls compute_diff and handles the difference and white diff resources.
45 *  If !outputDir.isEmpty(), writes out difference and white images.
46 */
47void create_and_write_diff_image(DiffRecord* drp,
48                                 DiffMetricProc dmp,
49                                 const int colorThreshold,
50                                 const SkString& outputDir,
51                                 const SkString& filename);
52
53#endif
54