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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef skdiff_utils_DEFINED
#define skdiff_utils_DEFINED
#include "skdiff.h"
class SkBitmap;
class SkData;
class SkString;
/** Returns true if the two buffers passed in are both non-nullptr,
* have the same length, and contain exactly the same byte values.
*/
bool are_buffers_equal(SkData* skdata1, SkData* skdata2);
/** Reads the file at the given path and returns its complete contents as an
* SkData object (or returns nullptr on error).
*/
SkData* read_file(const char* file_path);
/** Decodes the fileBits into the resource.fBitmap. Returns false on failure. */
bool get_bitmap(SkData* fileBits, DiffResource& resource, bool sizeOnly);
/** Writes the bitmap as a PNG to the path specified. */
bool write_bitmap(const SkString& path, const SkBitmap& bitmap);
/** Given an image filename, returns the name of the file containing
* the associated difference image.
*/
SkString filename_to_diff_filename(const SkString& filename);
/** Given an image filename, returns the name of the file containing
* the "white" difference image.
*/
SkString filename_to_white_filename(const SkString& filename);
/** Calls compute_diff and handles the difference and white diff resources.
* If !outputDir.isEmpty(), writes out difference and white images.
*/
void create_and_write_diff_image(DiffRecord* drp,
DiffMetricProc dmp,
const int colorThreshold,
const SkString& outputDir,
const SkString& filename);
#endif
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