dolphin/Source/Core/DiscIO/TGCBlob.h

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// Copyright 2016 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
#include <memory>
#include <utility>
#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"
namespace DiscIO
{
static constexpr u32 TGC_MAGIC = 0xA2380FAE;
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struct TGCHeader
{
u32 magic;
u32 unknown_1;
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u32 tgc_header_size;
u32 disc_header_area_size;
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u32 fst_real_offset;
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u32 fst_size;
u32 fst_max_size;
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u32 dol_real_offset;
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u32 dol_size;
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u32 file_area_real_offset;
u32 unknown_2;
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u32 unknown_3;
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u32 unknown_4;
u32 file_area_virtual_offset;
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};
class TGCFileReader final : public BlobReader
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{
public:
static std::unique_ptr<TGCFileReader> Create(File::IOFile file);
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BlobType GetBlobType() const override { return BlobType::TGC; }
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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; }
std::string GetCompressionMethod() const override { return {}; }
std::optional<int> GetCompressionLevel() const override { return std::nullopt; }
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bool Read(u64 offset, u64 nbytes, u8* out_ptr) override;
private:
TGCFileReader(File::IOFile file);
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File::IOFile m_file;
u64 m_size;
std::vector<u8> m_fst;
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// Stored as big endian in memory, regardless of the host endianness
TGCHeader m_header = {};
};
} // namespace DiscIO