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162e3be82b
This is intended to catch WIA files which have been created using wit's default parameters (40 MiB block size), once the WIA PR is merged. The check does however also work for GCZ files – not that I think anyone has a GCZ file with a block size that large.
71 lines
1.4 KiB
C++
71 lines
1.4 KiB
C++
// Copyright 2016 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#pragma once
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#include <array>
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#include <memory>
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#include <utility>
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#include "Common/CommonTypes.h"
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#include "Common/File.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 TGC_MAGIC = 0xA2380FAE;
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struct TGCHeader
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{
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u32 magic;
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u32 unknown_1;
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u32 tgc_header_size;
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u32 disc_header_area_size;
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u32 fst_real_offset;
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u32 fst_size;
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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;
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u32 unknown_2;
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u32 unknown_3;
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u32 unknown_4;
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u32 file_area_virtual_offset;
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};
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class TGCFileReader final : public BlobReader
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{
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public:
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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; }
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u64 GetDataSize() const override;
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bool IsDataSizeAccurate() const override { return true; }
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u64 GetBlockSize() const override { return 0; }
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bool HasFastRandomAccessInBlock() const override { return true; }
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bool Read(u64 offset, u64 nbytes, u8* out_ptr) override;
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private:
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TGCFileReader(File::IOFile file);
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bool InternalRead(u64 offset, u64 nbytes, u8* out_ptr);
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File::IOFile m_file;
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u64 m_size;
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s64 m_file_area_shift;
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// Stored as big endian in memory, regardless of the host endianness
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TGCHeader m_header = {};
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};
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} // namespace DiscIO
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