Index: ios/web/public/image_fetcher/webp_decoder.h |
diff --git a/ios/web/public/image_fetcher/webp_decoder.h b/ios/web/public/image_fetcher/webp_decoder.h |
deleted file mode 100644 |
index f11c70a34392a8cdf6a0d726816fcb5f4c32707e..0000000000000000000000000000000000000000 |
--- a/ios/web/public/image_fetcher/webp_decoder.h |
+++ /dev/null |
@@ -1,99 +0,0 @@ |
-// Copyright 2013 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 IOS_WEB_PUBLIC_IMAGE_FETCHER_WEBP_DECODER_H_ |
-#define IOS_WEB_PUBLIC_IMAGE_FETCHER_WEBP_DECODER_H_ |
- |
-#import <Foundation/Foundation.h> |
-#include <stddef.h> |
- |
-#include <memory> |
- |
-#import "base/mac/scoped_nsobject.h" |
-#include "base/memory/ref_counted.h" |
-#include "third_party/libwebp/webp/decode.h" |
- |
-@class NSData; |
- |
-namespace webp_transcode { |
- |
-// Decodes a WebP image into either JPEG, PNG or uncompressed TIFF. |
-class WebpDecoder : public base::RefCountedThreadSafe<WebpDecoder> { |
- public: |
- // Format of the decoded image. |
- // This enum is used for UMA reporting, keep it in sync with the histogram |
- // definition. |
- enum DecodedImageFormat { JPEG = 1, PNG, TIFF, DECODED_FORMAT_COUNT }; |
- |
- class Delegate : public base::RefCountedThreadSafe<WebpDecoder::Delegate> { |
- public: |
- virtual void OnFinishedDecoding(bool success) = 0; |
- virtual void SetImageFeatures(size_t total_size, // In bytes. |
- DecodedImageFormat format) = 0; |
- virtual void OnDataDecoded(NSData* data) = 0; |
- |
- protected: |
- friend class base::RefCountedThreadSafe<WebpDecoder::Delegate>; |
- virtual ~Delegate() {} |
- }; |
- |
- explicit WebpDecoder(WebpDecoder::Delegate* delegate); |
- |
- // Returns an NSData object containing the decoded image data of the given |
- // webp_image. Returns nil in case of failure. |
- static NSData* DecodeWebpImage(NSData* webp_image); |
- |
- // Returns true if the given image_data is a WebP image. |
- // |
- // Every WebP file contains a 12 byte file header in the beginning of the |
- // file. |
- // A WebP file header starts with the four ASCII characters "RIFF". The next |
- // four bytes contain the image size and the last four header bytes contain |
- // the four ASCII characters "WEBP". |
- // |
- // WebP file header: |
- // 1 1 |
- // Byte Nr. 0 1 2 3 4 5 6 7 8 9 0 1 |
- // Byte value [ R I F F ? ? ? ? W E B P ] |
- // |
- // For more information see: |
- // https://developers.google.com/speed/webp/docs/riff_container#webp_file_header |
- static bool IsWebpImage(const std::string& image_data); |
- |
- // For tests. |
- static size_t GetHeaderSize(); |
- |
- // Main entry point. |
- void OnDataReceived(NSData* data); |
- |
- // Stops the decoding. |
- void Stop(); |
- |
- private: |
- struct WebPIDecoderDeleter { |
- inline void operator()(WebPIDecoder* ptr) const { WebPIDelete(ptr); } |
- }; |
- |
- enum State { READING_FEATURES, READING_DATA, DONE }; |
- |
- friend class base::RefCountedThreadSafe<WebpDecoder>; |
- virtual ~WebpDecoder(); |
- |
- // Implements WebP image decoding state machine steps. |
- void DoReadFeatures(NSData* data); |
- void DoReadData(NSData* data); |
- bool DoSendData(); |
- |
- scoped_refptr<WebpDecoder::Delegate> delegate_; |
- WebPDecoderConfig config_; |
- WebpDecoder::State state_; |
- std::unique_ptr<WebPIDecoder, WebPIDecoderDeleter> incremental_decoder_; |
- base::scoped_nsobject<NSData> output_buffer_; |
- base::scoped_nsobject<NSMutableData> features_; |
- int has_alpha_; |
-}; |
- |
-} // namespace webp_transcode |
- |
-#endif // IOS_WEB_PUBLIC_IMAGE_FETCHER_WEBP_DECODER_H_ |