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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 "chrome/browser/importer/importer_util.h"
#include "skia/ext/image_operations.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/codec/png_codec.h"
#include "ui/gfx/favicon_size.h"
#include "webkit/glue/image_decoder.h"
namespace importer {
bool ReencodeFavicon(const unsigned char* src_data,
size_t src_len,
std::vector<unsigned char>* png_data) {
// Decode the favicon using WebKit's image decoder.
webkit_glue::ImageDecoder decoder(
gfx::Size(gfx::kFaviconSize, gfx::kFaviconSize));
SkBitmap decoded = decoder.Decode(src_data, src_len);
if (decoded.empty())
return false; // Unable to decode.
if (decoded.width() != gfx::kFaviconSize ||
decoded.height() != gfx::kFaviconSize) {
// The bitmap is not the correct size, re-sample.
int new_width = decoded.width();
int new_height = decoded.height();
gfx::CalculateFaviconTargetSize(&new_width, &new_height);
decoded = skia::ImageOperations::Resize(
decoded, skia::ImageOperations::RESIZE_LANCZOS3, new_width, new_height);
}
// Encode our bitmap as a PNG.
gfx::PNGCodec::EncodeBGRASkBitmap(decoded, false, png_data);
return true;
}
} // namespace importer
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