| // Copyright 2014 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MTP_FILE_STREAM_READER_H_ |
| #define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MTP_FILE_STREAM_READER_H_ |
| |
| #include <stdint.h> |
| |
| #include "base/files/file.h" |
| #include "base/functional/bind.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/time/time.h" |
| #include "chrome/browser/media_galleries/fileapi/mtp_device_async_delegate.h" |
| #include "net/base/completion_once_callback.h" |
| #include "storage/browser/file_system/file_stream_reader.h" |
| #include "storage/browser/file_system/file_system_url.h" |
| |
| namespace storage { |
| class FileSystemContext; |
| } |
| |
| class MTPFileStreamReader : public storage::FileStreamReader { |
| public: |
| MTPFileStreamReader(storage::FileSystemContext* file_system_context, |
| const storage::FileSystemURL& url, |
| int64_t initial_offset, |
| const base::Time& expected_modification_time, |
| bool do_media_header_validation); |
| |
| MTPFileStreamReader(const MTPFileStreamReader&) = delete; |
| MTPFileStreamReader& operator=(const MTPFileStreamReader&) = delete; |
| |
| ~MTPFileStreamReader() override; |
| |
| // FileStreamReader overrides. |
| int Read(net::IOBuffer* buf, |
| int buf_len, |
| net::CompletionOnceCallback callback) override; |
| int64_t GetLength(net::Int64CompletionOnceCallback callback) override; |
| |
| private: |
| void FinishValidateMediaHeader( |
| net::IOBuffer* header_buf, |
| net::IOBuffer* buf, int buf_len, |
| const base::File::Info& file_info, |
| int header_bytes_read); |
| |
| void FinishRead(const base::File::Info& file_info, int bytes_read); |
| |
| void FinishGetLength(const base::File::Info& file_info); |
| |
| void CallReadCallbackwithPlatformFileError(base::File::Error file_error); |
| |
| void CallGetLengthCallbackWithPlatformFileError(base::File::Error file_error); |
| |
| void ReadBytes( |
| const storage::FileSystemURL& url, |
| const scoped_refptr<net::IOBuffer>& buf, |
| int64_t offset, |
| int buf_len, |
| MTPDeviceAsyncDelegate::ReadBytesSuccessCallback success_callback); |
| |
| scoped_refptr<storage::FileSystemContext> file_system_context_; |
| storage::FileSystemURL url_; |
| int64_t current_offset_; |
| const base::Time expected_modification_time_; |
| net::CompletionOnceCallback read_callback_; |
| net::Int64CompletionOnceCallback get_length_callback_; |
| |
| bool media_header_validated_; |
| |
| base::WeakPtrFactory<MTPFileStreamReader> weak_factory_{this}; |
| }; |
| |
| #endif // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MTP_FILE_STREAM_READER_H_ |