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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "webkit/support/webkit_support_gfx.h"
#include "ui/gfx/codec/png_codec.h"
#include "ui/gfx/size.h"
namespace webkit_support {
// Decode a PNG into an RGBA pixel array.
bool DecodePNG(const unsigned char* input, size_t input_size,
std::vector<unsigned char>* output,
int* width, int* height) {
return gfx::PNGCodec::Decode(input, input_size, gfx::PNGCodec::FORMAT_RGBA,
output, width, height);
}
// Encode an RGBA pixel array into a PNG.
bool EncodeRGBAPNG(const unsigned char* input,
int width,
int height,
int row_byte_width,
std::vector<unsigned char>* output) {
return gfx::PNGCodec::Encode(input, gfx::PNGCodec::FORMAT_RGBA,
gfx::Size(width, height), row_byte_width, false,
std::vector<gfx::PNGCodec::Comment>(), output);
}
// Encode an BGRA pixel array into a PNG.
bool EncodeBGRAPNG(const unsigned char* input,
int width,
int height,
int row_byte_width,
bool discard_transparency,
std::vector<unsigned char>* output) {
return gfx::PNGCodec::Encode(input, gfx::PNGCodec::FORMAT_BGRA,
gfx::Size(width, height), row_byte_width, discard_transparency,
std::vector<gfx::PNGCodec::Comment>(), output);
}
bool EncodeBGRAPNGWithChecksum(const unsigned char* input,
int width,
int height,
int row_byte_width,
bool discard_transparency,
const std::string& checksum,
std::vector<unsigned char>* output) {
std::vector<gfx::PNGCodec::Comment> comments;
comments.push_back(gfx::PNGCodec::Comment("checksum", checksum));
return gfx::PNGCodec::Encode(input, gfx::PNGCodec::FORMAT_BGRA,
gfx::Size(width, height), row_byte_width, discard_transparency,
comments, output);
}
} // namespace webkit_support
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