skia2/tools/skdiff/skdiff_utils.h
bungeman fe91727057 Move skdiff tool and add to gn build.
I really wanted this today, so I got it working again.

Change-Id: I1a37d48d4806198b55c59d1df5ff15a03500195f
Reviewed-on: https://skia-review.googlesource.com/3383
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
2016-10-14 14:02:42 +00:00

53 lines
1.7 KiB
C++

/*
* 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).
*/
sk_sp<SkData> read_file(const char* file_path);
/** Decodes the fileBits into the resource.fBitmap. Returns false on failure. */
bool get_bitmap(sk_sp<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