tools/imagediff/image_diff_png.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef TOOLS_IMAGEDIFF_IMAGE_DIFF_PNG_H_
   6 #define TOOLS_IMAGEDIFF_IMAGE_DIFF_PNG_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 namespace image_diff_png {
  12
  13 // Decode a PNG into an RGBA pixel array.
  14 bool DecodePNG(const unsigned char* input, size_t input_size,
  15                std::vector<unsigned char>* output,
  16                int* width, int* height);
  17
  18 // Encode an RGBA pixel array into a PNG.
  19 bool EncodeRGBAPNG(const unsigned char* input,
  20                    int width,
  21                    int height,
  22                    int row_byte_width,
  23                    std::vector<unsigned char>* output);
  24
  25 // Encode an BGRA pixel array into a PNG.
  26 bool EncodeBGRAPNG(const unsigned char* input,
  27                    int width,
  28                    int height,
  29                    int row_byte_width,
  30                    bool discard_transparency,
  31                    std::vector<unsigned char>* output);
  32
  33 }  // namespace image_diff_png
  34
  35 #endif  // TOOLS_IMAGEDIFF_IMAGE_DIFF_PNG_H_