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edbbf493f8
Rather than rely on the developer to do the right thing, just make the default behavior safely deallocate resources. If shared semantics are ever needed in the future, the constructor that takes a unique_ptr for shared_ptr can be used.
61 lines
1.2 KiB
C++
61 lines
1.2 KiB
C++
// Copyright 2008 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 <cstdio>
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#include <memory>
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#include <string>
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#include "Common/CommonTypes.h"
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#include "Common/FileUtil.h"
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#include "DiscIO/Blob.h"
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namespace DiscIO
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{
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bool IsCISOBlob(const std::string& filename);
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static const u32 CISO_HEADER_SIZE = 0x8000;
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static const u32 CISO_MAP_SIZE = CISO_HEADER_SIZE - sizeof(u32) - sizeof(char) * 4;
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struct CISOHeader
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{
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// "CISO"
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char magic[4];
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// little endian
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u32 block_size;
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// 0=unused, 1=used, others=invalid
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u8 map[CISO_MAP_SIZE];
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};
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class CISOFileReader : public IBlobReader
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{
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public:
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static std::unique_ptr<CISOFileReader> Create(const std::string& filename);
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BlobType GetBlobType() const override { return BlobType::CISO; }
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// The CISO format does not save the original file size.
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// This function returns an upper bound.
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u64 GetDataSize() const override;
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u64 GetRawSize() const override;
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bool Read(u64 offset, u64 nbytes, u8* out_ptr) override;
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private:
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CISOFileReader(std::FILE* file);
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typedef u16 MapType;
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static const MapType UNUSED_BLOCK_ID = -1;
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File::IOFile m_file;
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u64 m_size;
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u32 m_block_size;
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MapType m_ciso_map[CISO_MAP_SIZE];
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};
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} // namespace
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