Initial megacommit.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/DiscIO/Src/Blob.h

@@ -0,0 +1,63 @@
+#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;
+		virtual bool IsValid() const = 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
+