66 lines
1.7 KiB
C++
66 lines
1.7 KiB
C++
// Copyright (C) 2003 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#ifndef _CISO_BLOB_H
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#define _CISO_BLOB_H
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#include "Blob.h"
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#include "FileUtil.h"
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#define CISO_MAGIC "CISO"
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#define CISO_HEAD_SIZE (0x8000)
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#define CISO_MAP_SIZE (CISO_HEAD_SIZE - 8)
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namespace DiscIO
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{
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bool IsCISOBlob(const char* filename);
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// Blocks that won't compress to less than 97% of the original size are stored as-is.
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struct CISO_Head_t
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{
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u8 magic[4]; // "CISO"
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u32 block_size; // stored as litte endian (not network byte order)
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u8 map[CISO_MAP_SIZE]; // 0=unused, 1=used, others=invalid
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};
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typedef u16 CISO_Map_t;
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const CISO_Map_t CISO_UNUSED_BLOCK = (CISO_Map_t)~0;
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class CISOFileReader : public IBlobReader
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{
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File::IOFile m_file;
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CISOFileReader(std::FILE* file);
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s64 m_size;
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public:
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static CISOFileReader* Create(const char* filename);
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u64 GetDataSize() const { return m_size; }
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u64 GetRawSize() const { return m_size; }
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bool Read(u64 offset, u64 nbytes, u8* out_ptr);
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private:
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CISO_Head_t header;
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CISO_Map_t ciso_map[CISO_MAP_SIZE];
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};
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} // namespace
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#endif // _FILE_BLOB_H
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