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// 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.
#include "chrome/browser/ash/fileapi/mtp_file_system_backend_delegate.h"
#include "chrome/browser/media_galleries/fileapi/device_media_async_file_util.h"
#include "storage/browser/file_system/file_stream_reader.h"
#include "storage/browser/file_system/file_stream_writer.h"
#include "storage/browser/file_system/file_system_url.h"
namespace ash {
MTPFileSystemBackendDelegate::MTPFileSystemBackendDelegate(
const base::FilePath& storage_partition_path)
: device_media_async_file_util_(
DeviceMediaAsyncFileUtil::Create(storage_partition_path,
NO_MEDIA_FILE_VALIDATION)),
mtp_watcher_manager_(
new MTPWatcherManager(device_media_async_file_util_.get())) {
}
MTPFileSystemBackendDelegate::~MTPFileSystemBackendDelegate() = default;
storage::AsyncFileUtil* MTPFileSystemBackendDelegate::GetAsyncFileUtil(
storage::FileSystemType type) {
DCHECK_EQ(storage::kFileSystemTypeDeviceMediaAsFileStorage, type);
return device_media_async_file_util_.get();
}
std::unique_ptr<storage::FileStreamReader>
MTPFileSystemBackendDelegate::CreateFileStreamReader(
const storage::FileSystemURL& url,
int64_t offset,
int64_t max_bytes_to_read,
const base::Time& expected_modification_time,
storage::FileSystemContext* context) {
DCHECK_EQ(storage::kFileSystemTypeDeviceMediaAsFileStorage, url.type());
return device_media_async_file_util_->GetFileStreamReader(
url, offset, expected_modification_time, context);
}
std::unique_ptr<storage::FileStreamWriter>
MTPFileSystemBackendDelegate::CreateFileStreamWriter(
const storage::FileSystemURL& url,
int64_t offset,
storage::FileSystemContext* context) {
DCHECK_EQ(storage::kFileSystemTypeDeviceMediaAsFileStorage, url.type());
// TODO(kinaba): support writing.
return nullptr;
}
storage::WatcherManager* MTPFileSystemBackendDelegate::GetWatcherManager(
storage::FileSystemType type) {
DCHECK_EQ(storage::kFileSystemTypeDeviceMediaAsFileStorage, type);
return mtp_watcher_manager_.get();
}
} // namespace ash
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