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