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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 #include "chrome/browser/importer/reencode_favicon.h" | |
6 | |
7 #include "content/public/child/image_decoder_utils.h" | |
8 #include "skia/ext/image_operations.h" | |
9 #include "third_party/skia/include/core/SkBitmap.h" | |
10 #include "ui/gfx/codec/png_codec.h" | |
11 #include "ui/gfx/favicon_size.h" | |
12 #include "ui/gfx/size.h" | |
13 | |
14 bool ReencodeFavicon(const uint8* src_data, | |
15 size_t src_len, | |
16 std::vector<uint8>* png_data) { | |
17 // Decode the favicon using WebKit's image decoder. | |
18 SkBitmap decoded = content::DecodeImage( | |
19 src_data, | |
20 gfx::Size(gfx::kFaviconSize, gfx::kFaviconSize), | |
21 src_len); | |
22 if (decoded.empty()) | |
23 return false; // Unable to decode. | |
24 | |
25 if (decoded.width() != gfx::kFaviconSize || | |
26 decoded.height() != gfx::kFaviconSize) { | |
27 // The bitmap is not the correct size, re-sample. | |
28 int new_width = decoded.width(); | |
29 int new_height = decoded.height(); | |
30 gfx::CalculateFaviconTargetSize(&new_width, &new_height); | |
31 decoded = skia::ImageOperations::Resize( | |
32 decoded, skia::ImageOperations::RESIZE_LANCZOS3, new_width, new_height); | |
33 } | |
34 | |
35 // Encode our bitmap as a PNG. | |
36 gfx::PNGCodec::EncodeBGRASkBitmap(decoded, false, png_data); | |
37 return true; | |
38 } | |
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