dolphin/Source/Core/DiscIO/WbfsBlob.h

88 lines
2.0 KiB
C++

// Copyright 2008 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include <string>
#include <vector>
#include "Common/CommonTypes.h"
#include "Common/File.h"
#include "DiscIO/Blob.h"
namespace DiscIO
{
static constexpr u32 WBFS_MAGIC = 0x53464257; // "WBFS" (byteswapped to little endian)
class WbfsFileReader : public BlobReader
{
public:
~WbfsFileReader();
static std::unique_ptr<WbfsFileReader> Create(File::IOFile file, const std::string& path);
BlobType GetBlobType() const override { return BlobType::WBFS; }
u64 GetRawSize() const override { return m_size; }
// The WBFS format does not save the original file size.
// This function returns a constant upper bound
// (the size of a double-layer Wii disc).
u64 GetDataSize() const override;
bool IsDataSizeAccurate() const override { return false; }
u64 GetBlockSize() const override { return m_wbfs_sector_size; }
bool Read(u64 offset, u64 nbytes, u8* out_ptr) override;
private:
WbfsFileReader(File::IOFile file, const std::string& path);
void OpenAdditionalFiles(const std::string& path);
bool AddFileToList(File::IOFile file);
bool ReadHeader();
File::IOFile& SeekToCluster(u64 offset, u64* available);
bool IsGood() { return m_good; }
struct FileEntry
{
FileEntry(File::IOFile file_, u64 base_address_, u64 size_)
: file(std::move(file_)), base_address(base_address_), size(size_)
{
}
File::IOFile file;
u64 base_address;
u64 size;
};
std::vector<FileEntry> m_files;
u64 m_size;
u64 m_hd_sector_size;
u64 m_wbfs_sector_size;
u64 m_wbfs_sector_count;
u64 m_disc_info_size;
#pragma pack(1)
struct WbfsHeader
{
u32 magic;
u32 hd_sector_count;
u8 hd_sector_shift;
u8 wbfs_sector_shift;
u8 padding[2];
u8 disc_table[500];
} m_header;
#pragma pack()
std::vector<u16> m_wlba_table;
u64 m_blocks_per_disc;
bool m_good;
};
} // namespace DiscIO