1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/user_data_importer/content/favicon_reencode.h"
#include "content/public/child/image_decoder_utils.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 "ui/gfx/geometry/size.h"
namespace importer {
std::optional<std::vector<uint8_t>> ReencodeFavicon(
base::span<const uint8_t> src) {
// Decode the favicon using WebKit's image decoder.
SkBitmap decoded = content::DecodeImage(
src, gfx::Size(gfx::kFaviconSize, gfx::kFaviconSize));
if (decoded.empty()) {
return std::nullopt; // 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.
return gfx::PNGCodec::EncodeBGRASkBitmap(decoded,
/*discard_transparency=*/false);
}
} // namespace importer
|
