2 * Copyright 2012 Google Inc.
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
8 #ifndef skdiff_utils_DEFINED
9 #define skdiff_utils_DEFINED
12 #include "SkImageDecoder.h"
18 /** Returns true if the two buffers passed in are both non-nullptr,
19 * have the same length, and contain exactly the same byte values.
21 bool are_buffers_equal(SkData* skdata1, SkData* skdata2);
23 /** Reads the file at the given path and returns its complete contents as an
24 * SkData object (or returns nullptr on error).
26 SkData* read_file(const char* file_path);
28 /** Decodes the fileBits into the resource.fBitmap. Returns false on failure. */
29 bool get_bitmap(SkData* fileBits, DiffResource& resource, SkImageDecoder::Mode mode);
31 /** Writes the bitmap as a PNG to the path specified. */
32 bool write_bitmap(const SkString& path, const SkBitmap& bitmap);
34 /** Given an image filename, returns the name of the file containing
35 * the associated difference image.
37 SkString filename_to_diff_filename(const SkString& filename);
39 /** Given an image filename, returns the name of the file containing
40 * the "white" difference image.
42 SkString filename_to_white_filename(const SkString& filename);
44 /** Calls compute_diff and handles the difference and white diff resources.
45 * If !outputDir.isEmpty(), writes out difference and white images.
47 void create_and_write_diff_image(DiffRecord* drp,
49 const int colorThreshold,
50 const SkString& outputDir,
51 const SkString& filename);