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 "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
30/** Writes the bitmap as a PNG to the path specified. */
31bool write_bitmap(const SkString& path, const SkBitmap& bitmap);
32
33/** Given an image filename, returns the name of the file containing
34 *  the associated difference image.
35 */
36SkString filename_to_diff_filename(const SkString& filename);
37
38/** Given an image filename, returns the name of the file containing
39 *  the "white" difference image.
40 */
41SkString filename_to_white_filename(const SkString& filename);
42
43/** Calls compute_diff and handles the difference and white diff resources.
44 *  If !outputDir.isEmpty(), writes out difference and white images.
45 */
46void create_and_write_diff_image(DiffRecord* drp,
47                                 DiffMetricProc dmp,
48                                 const int colorThreshold,
49                                 const SkString& outputDir,
50                                 const SkString& filename);
51
52#endif
53