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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this image code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef CHROME_UTILITY_IMAGE_WRITER_IMAGE_WRITER_H_ |
| 6 #define CHROME_UTILITY_IMAGE_WRITER_IMAGE_WRITER_H_ |
| 7 |
| 8 #include "base/bind.h" |
| 9 #include "base/callback.h" |
| 10 #include "base/files/file_path.h" |
| 11 #include "base/memory/weak_ptr.h" |
| 12 |
| 13 namespace image_writer { |
| 14 |
| 15 class ImageWriterHandler; |
| 16 |
| 17 // Manages a write within the utility thread. This class holds all the state |
| 18 // around the writing and communicates with the ImageWriterHandler to dispatch |
| 19 // messages. |
| 20 class ImageWriter : public base::SupportsWeakPtr<ImageWriter> { |
| 21 public: |
| 22 explicit ImageWriter(ImageWriterHandler* handler); |
| 23 virtual ~ImageWriter(); |
| 24 |
| 25 // Starts a write from image_path to device_path. |
| 26 void Write(const base::FilePath& image_path, |
| 27 const base::FilePath& device_path); |
| 28 // Starts verifying that image_path and device_path have the same size and |
| 29 // contents. |
| 30 void Verify(const base::FilePath& image_path, |
| 31 const base::FilePath& device_path); |
| 32 // Cancels any pending writes or verifications. |
| 33 void Cancel(); |
| 34 |
| 35 // Returns whether an operation is in progress. |
| 36 bool IsRunning(); |
| 37 |
| 38 private: |
| 39 // Convenience wrappers. |
| 40 void PostTask(const base::Closure& task); |
| 41 void PostProgress(int64 progress); |
| 42 void Error(const std::string& message); |
| 43 |
| 44 // Work loops. |
| 45 void WriteChunk(); |
| 46 void VerifyChunk(); |
| 47 |
| 48 // Cleans up file handles. |
| 49 void CleanUp(); |
| 50 |
| 51 base::FilePath image_path_; |
| 52 base::FilePath device_path_; |
| 53 |
| 54 base::PlatformFile image_file_; |
| 55 base::PlatformFile device_file_; |
| 56 int64 bytes_processed_; |
| 57 |
| 58 ImageWriterHandler* handler_; |
| 59 }; |
| 60 |
| 61 } // namespace image_writer |
| 62 |
| 63 #endif // CHROME_UTILITY_IMAGE_WRITER_IMAGE_WRITER_H_ |
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