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// Copyright 2013 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef TESTING_IMAGE_DIFF_IMAGE_DIFF_PNG_H_
#define TESTING_IMAGE_DIFF_IMAGE_DIFF_PNG_H_
#include <stdlib.h> // for size_t.
#include <vector>
#include "core/fxcrt/span.h"
namespace image_diff_png {
// Decode a PNG into an RGBA pixel array, or BGRA pixel array if
// |reverse_byte_order| is set to true.
std::vector<uint8_t> DecodePNG(pdfium::span<const uint8_t> input,
bool reverse_byte_order,
int* width,
int* height);
// Encode a BGR pixel array into a PNG.
std::vector<uint8_t> EncodeBGRPNG(pdfium::span<const uint8_t> input,
int width,
int height,
int row_byte_width);
// Encode an RGBA pixel array into a PNG.
std::vector<uint8_t> EncodeRGBAPNG(pdfium::span<const uint8_t> input,
int width,
int height,
int row_byte_width);
// Encode an BGRA pixel array into a PNG.
std::vector<uint8_t> EncodeBGRAPNG(pdfium::span<const uint8_t> input,
int width,
int height,
int row_byte_width,
bool discard_transparency);
// Encode a grayscale pixel array into a PNG.
std::vector<uint8_t> EncodeGrayPNG(pdfium::span<const uint8_t> input,
int width,
int height,
int row_byte_width);
} // namespace image_diff_png
#endif // TESTING_IMAGE_DIFF_IMAGE_DIFF_PNG_H_