53 lines
958 B
C
53 lines
958 B
C
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#ifndef NAC_DTMF_H
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#define NAC_DTMF_H
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class DTMFQueue
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{
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private:
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BYTE **m_aTones; // array of tone signals
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bool m_bInitialized;
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WAVEFORMATEX m_WaveFormat;
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CRITICAL_SECTION m_cs;
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HANDLE m_hEvent;
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void ReleaseToneBank();
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void AddSignal(BYTE *pTone, int nFrequency, double dAmp, int nLength);
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void CreateDTMFTone(BYTE *pTone, int nToneLength, int toneID);
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HRESULT GenerateTones(WAVEFORMATEX *pWaveFormat);
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struct DTMF_TX_ELEMENT
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{
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int nToneID;
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int nBytesToCopy;
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int nOffsetStart;
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};
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#define DTMF_QUEUE_SIZE 100
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DTMF_TX_ELEMENT m_aTxQueue[DTMF_QUEUE_SIZE];
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int m_nQueueHead;
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int m_nQueueLength;
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public:
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DTMFQueue();
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~DTMFQueue();
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HRESULT Initialize(WAVEFORMATEX *pWaveFormat);
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HRESULT ReadFromQueue(BYTE *pBuffer, UINT uSize);
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HRESULT ClearQueue();
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HRESULT AddDigitToQueue(int nDigit);
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HANDLE GetEvent() {return m_hEvent;}
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};
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// default length of the DTMF feedback beep (in ms)
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#define DTMF_FEEDBACK_BEEP_MS 64
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#endif
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