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775dc8a9c0
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4 8ced0084-cf51-0410-be5f-012b33b47a6e
64 lines
1.4 KiB
C++
64 lines
1.4 KiB
C++
#ifndef _BLOB_H
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#define _BLOB_H
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/*
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Code not big-endian safe.
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BLOB
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Blobs are Binary Large OBjects. For example, a typical DVD image.
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Often, you may want to store these things in a highly compressed format, but still
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allow random access.
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Always read your BLOBs using an interface returned by CreateBlobReader(). It will
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detect whether the file is a compressed blob, or just a big hunk of data, and
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automatically do the right thing.
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To create new BLOBs, use CompressFileToBlob.
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Right now caching of decompressed chunks doesn't work, so it's a bit slow.
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*/
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#include "Common.h"
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namespace DiscIO
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{
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class IBlobReader
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{
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public:
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virtual ~IBlobReader() {}
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virtual u64 GetRawSize() const = 0;
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virtual u64 GetDataSize() const = 0;
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virtual bool Read(u64 offset, u64 size, u8* out_ptr) = 0;
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virtual bool IsValid() const = 0;
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protected:
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IBlobReader() {}
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private:
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IBlobReader(const IBlobReader& other) {}
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};
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IBlobReader* CreateBlobReader(const char* filename);
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bool IsCompressedBlob(const char* filename);
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typedef void (*CompressCB)(const char* text, float percent, void* arg);
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bool CompressFileToBlob(const char* infile, const char* outfile, u32 sub_type = 0, int sector_size = 16384,
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CompressCB callback = 0, void* arg = 0);
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bool DecompressBlobToFile(const char* infile, const char* outfile,
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CompressCB callback = 0, void* arg = 0);
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}
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#endif
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