28 lines
857 B
C++
28 lines
857 B
C++
#pragma once
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class IFIFO
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{
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public:
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IFIFO(UInt32 length = 0);
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virtual ~IFIFO();
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virtual bool Push(UInt8 * buf, UInt32 length);
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virtual bool Pop(UInt8 * buf, UInt32 length);
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virtual bool Peek(UInt8 * buf, UInt32 length);
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virtual void Clear(void);
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UInt32 GetBufferSize(void) { return fifoBufSize; }
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UInt32 GetBufferRemain(void) { return fifoBufSize - fifoDataLength; }
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UInt32 GetDataLength(void) { return fifoDataLength; }
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private:
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UInt32 ToRawOffset(UInt32 in) { return in % fifoBufSize; }
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UInt32 ToDataOffset(UInt32 in) { return ToRawOffset(fifoBase + in); }
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UInt32 GetWriteOffset(void) { return ToDataOffset(fifoDataLength); }
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UInt8 * fifoBuf;
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UInt32 fifoBufSize; // size of the buffer (in bytes)
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UInt32 fifoBase; // pointer to the beginning of the data block
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UInt32 fifoDataLength; // size of the data block
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};
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