BizHawk/psx/mednadisc/cdrom/CDAFReader.h

42 lines
871 B
C++

#ifndef __MDFN_CDAFREADER_H
#define __MDFN_CDAFREADER_H
#include "Stream.h"
class CDAFReader
{
public:
CDAFReader();
virtual ~CDAFReader();
virtual uint64 FrameCount(void) = 0;
INLINE uint64 Read(uint64 frame_offset, int16 *buffer, uint64 frames)
{
uint64 ret;
if(LastReadPos != frame_offset)
{
//puts("SEEK");
if(!Seek_(frame_offset))
return(0);
LastReadPos = frame_offset;
}
ret = Read_(buffer, frames);
LastReadPos += ret;
return(ret);
}
private:
virtual uint64 Read_(int16 *buffer, uint64 frames) = 0;
virtual bool Seek_(uint64 frame_offset) = 0;
uint64 LastReadPos;
};
// AR_Open(), and CDAFReader, will NOT take "ownership" of the Stream object(IE it won't ever delete it). Though it does assume it has exclusive access
// to it for as long as the CDAFReader object exists.
CDAFReader *CDAFR_Open(Stream *fp);
#endif