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// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <mutex>
#include "core/file_sys/errors.h"
#include "core/file_sys/fssystem/fs_i_storage.h"
#include "core/file_sys/vfs/vfs.h"
namespace FileSys {
class HierarchicalSha256Storage : public IReadOnlyStorage {
YUZU_NON_COPYABLE(HierarchicalSha256Storage);
YUZU_NON_MOVEABLE(HierarchicalSha256Storage);
public:
static constexpr s32 LayerCount = 3;
static constexpr size_t HashSize = 256 / 8;
public:
HierarchicalSha256Storage() : m_mutex() {}
Result Initialize(VirtualFile* base_storages, s32 layer_count, size_t htbs, void* hash_buf,
size_t hash_buf_size);
virtual size_t GetSize() const override {
return m_base_storage->GetSize();
}
virtual size_t Read(u8* buffer, size_t length, size_t offset) const override;
private:
VirtualFile m_base_storage;
s64 m_base_storage_size;
char* m_hash_buffer;
size_t m_hash_buffer_size;
s32 m_hash_target_block_size;
s32 m_log_size_ratio;
std::mutex m_mutex;
};
} // namespace FileSys
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