58 lines
1.3 KiB
C++
58 lines
1.3 KiB
C++
|
|
/*++
|
|
|
|
Copyright (c) 1995-1996 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
txstream.h
|
|
|
|
Abstract:
|
|
The TxStream class maintains a queue of MediaPackets. The record thread gets a free buffer
|
|
(GetFree), records into the buffer and puts it in the queue (PutNextWaveIn) from where it is
|
|
removed (GetNext), decoded and sent on the network.
|
|
The queue is implemented as a circular array with m_SendPos marking the index
|
|
of the next recorded buffer.
|
|
|
|
--*/
|
|
#ifndef _TXSTREAM_H_
|
|
#define _TXSTREAM_H_
|
|
|
|
|
|
#include <pshpack8.h> /* Assume 8 byte packing throughout */
|
|
|
|
#define MAX_TXRING_SIZE 8
|
|
#define MAX_TXVRING_SIZE 4
|
|
|
|
class TxStream {
|
|
public:
|
|
BOOL Initialize(UINT flags, UINT size, DataPump *pdp, MEDIAPACKETINIT *papi);
|
|
BOOL PutNextRecorded(MediaPacket *);
|
|
MediaPacket *GetFree();
|
|
MediaPacket *GetNext();
|
|
void Release(MediaPacket *);
|
|
void Stop();
|
|
UINT Reset();
|
|
void GetRing ( MediaPacket ***pppAudPckt, ULONG *puSize ) { *pppAudPckt = &m_Ring[0]; *puSize = (ULONG) m_RingSize; }
|
|
BOOL Destroy();
|
|
private:
|
|
MediaPacket *m_Ring[MAX_TXRING_SIZE];
|
|
UINT m_RingSize;
|
|
UINT m_FreePos;
|
|
UINT m_SendPos;
|
|
UINT m_PreSendCount;
|
|
HANDLE m_hQEvent;
|
|
UINT m_TxFlags;
|
|
CRITICAL_SECTION m_CritSect;
|
|
DataPump *m_pDataPump;
|
|
UINT ModRing(UINT i) {return (i & (m_RingSize-1));}
|
|
BOOL m_fPreamblePacket;
|
|
BOOL m_fTalkspurt;
|
|
};
|
|
|
|
#include <poppack.h> /* End byte packing */
|
|
|
|
#endif // _TXSTREAM_H_
|
|
|
|
|