| // Copyright 2018 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. |
| |
| #ifndef CHROME_BROWSER_OFFLINE_PAGES_THUMBNAIL_DECODER_IMPL_H_ |
| #define CHROME_BROWSER_OFFLINE_PAGES_THUMBNAIL_DECODER_IMPL_H_ |
| |
| #include <memory> |
| |
| #include "chrome/browser/search/suggestions/image_decoder_impl.h" |
| #include "components/offline_pages/core/thumbnail_decoder.h" |
| |
| namespace offline_pages { |
| |
| // Decodes the downloaded JPEG image, crops it and re-encodes it as a PNG |
| // file to be used as the thumbnail of an offlined suggested article. |
| // Note: the local decoding in a separate process and local re-encoding as a PNG |
| // are important security measures to disarm a potential maliciously-crafted |
| // JPEG, which cannot maintain its evil nature after being converted to PNG. |
| class ThumbnailDecoderImpl : public ThumbnailDecoder { |
| public: |
| explicit ThumbnailDecoderImpl( |
| std::unique_ptr<image_fetcher::ImageDecoder> decoder); |
| ~ThumbnailDecoderImpl() override; |
| |
| void DecodeAndCropThumbnail(const std::string& thumbnail_data, |
| DecodeComplete complete_callback) override; |
| |
| private: |
| std::unique_ptr<image_fetcher::ImageDecoder> image_decoder_; |
| }; |
| |
| } // namespace offline_pages |
| |
| #endif // CHROME_BROWSER_OFFLINE_PAGES_THUMBNAIL_DECODER_IMPL_H_ |