dolphin/Source/Core/DiscIO/TGCBlob.h

71 lines
1.4 KiB
C++

// Copyright 2016 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <memory>
#include <utility>
#include "Common/CommonTypes.h"
#include "Common/File.h"
#include "DiscIO/Blob.h"
namespace DiscIO
{
static constexpr u32 TGC_MAGIC = 0xA2380FAE;
struct TGCHeader
{
u32 magic;
u32 unknown_1;
u32 tgc_header_size;
u32 disc_header_area_size;
u32 fst_real_offset;
u32 fst_size;
u32 fst_max_size;
u32 dol_real_offset;
u32 dol_size;
u32 file_area_real_offset;
u32 unknown_2;
u32 unknown_3;
u32 unknown_4;
u32 file_area_virtual_offset;
};
class TGCFileReader final : public BlobReader
{
public:
static std::unique_ptr<TGCFileReader> Create(File::IOFile file);
BlobType GetBlobType() const override { return BlobType::TGC; }
u64 GetRawSize() const override { return m_size; }
u64 GetDataSize() const override;
bool IsDataSizeAccurate() const override { return true; }
u64 GetBlockSize() const override { return 0; }
bool HasFastRandomAccessInBlock() const override { return true; }
bool Read(u64 offset, u64 nbytes, u8* out_ptr) override;
private:
TGCFileReader(File::IOFile file);
bool InternalRead(u64 offset, u64 nbytes, u8* out_ptr);
File::IOFile m_file;
u64 m_size;
s64 m_file_area_shift;
// Stored as big endian in memory, regardless of the host endianness
TGCHeader m_header = {};
};
} // namespace DiscIO