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e149ad4f0a
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88 lines
2.1 KiB
C++
88 lines
2.1 KiB
C++
// Copyright 2008 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include <memory>
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#include <string>
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#include <vector>
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#include "Common/CommonTypes.h"
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#include "Common/IOFile.h"
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#include "DiscIO/Blob.h"
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namespace DiscIO
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{
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static constexpr u32 WBFS_MAGIC = 0x53464257; // "WBFS" (byteswapped to little endian)
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class WbfsFileReader : public BlobReader
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{
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public:
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~WbfsFileReader();
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static std::unique_ptr<WbfsFileReader> Create(File::IOFile file, const std::string& path);
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BlobType GetBlobType() const override { return BlobType::WBFS; }
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u64 GetRawSize() const override { return m_size; }
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// The WBFS format does not save the original file size.
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// This function returns a constant upper bound
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// (the size of a double-layer Wii disc).
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u64 GetDataSize() const override;
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bool IsDataSizeAccurate() const override { return false; }
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u64 GetBlockSize() const override { return m_wbfs_sector_size; }
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bool HasFastRandomAccessInBlock() const override { return true; }
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std::string GetCompressionMethod() const override { return {}; }
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bool Read(u64 offset, u64 nbytes, u8* out_ptr) override;
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private:
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WbfsFileReader(File::IOFile file, const std::string& path);
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void OpenAdditionalFiles(const std::string& path);
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bool AddFileToList(File::IOFile file);
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bool ReadHeader();
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File::IOFile& SeekToCluster(u64 offset, u64* available);
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bool IsGood() { return m_good; }
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struct FileEntry
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{
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FileEntry(File::IOFile file_, u64 base_address_, u64 size_)
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: file(std::move(file_)), base_address(base_address_), size(size_)
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{
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}
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File::IOFile file;
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u64 base_address;
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u64 size;
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};
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std::vector<FileEntry> m_files;
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u64 m_size;
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u64 m_hd_sector_size;
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u64 m_wbfs_sector_size;
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u64 m_wbfs_sector_count;
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u64 m_disc_info_size;
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#pragma pack(1)
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struct WbfsHeader
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{
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u32 magic;
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u32 hd_sector_count;
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u8 hd_sector_shift;
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u8 wbfs_sector_shift;
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u8 padding[2];
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u8 disc_table[500];
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} m_header;
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#pragma pack()
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std::vector<u16> m_wlba_table;
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u64 m_blocks_per_disc;
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bool m_good;
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};
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} // namespace DiscIO
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