129 lines
3.2 KiB
C++
129 lines
3.2 KiB
C++
/* Copyright (c) Microsoft Corporation.
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Licensed under the MIT License. */
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/***************************************************************************
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srec.h: Sound Recording class
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Primary Author: ****** (based on ***** original srec)
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Review Status: reviewed
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BASE ---> SREC
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***************************************************************************/
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#ifndef SREC_H
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#define SREC_H
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#include "audioman.h"
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/****************************************
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RIFF Header helper class
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****************************************/
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#ifdef MAC
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#define RIFF_TAG 'RIFF'
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#define WAVE_TAG 'WAVE'
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#define FMT__TAG 'fmt '
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#define DATA_TAG 'data'
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#define FACT_TAG 'fact'
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#else
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#define RIFF_TAG 'FFIR' // RIFF
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#define WAVE_TAG 'EVAW' // WAVE
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#define FMT__TAG ' tmf' // fmt_
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#define DATA_TAG 'atad' // data
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#define FACT_TAG 'tcaf' // fact
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#endif
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#pragma pack(push, _SOCPACK_)
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#pragma pack(1)
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class RIFF
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{
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private:
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DWORD _dwRiffTag;
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DWORD _dwRiffLength;
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DWORD _dwWaveTag;
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DWORD _dwFmtTag;
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DWORD _dwFmtLength;
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WAVEFORMATEX _wfx;
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DWORD _dwDataTag;
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DWORD _dwDataLength;
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public:
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void Set(long cchan, long csampSec, long cbSample, DWORD dwLength)
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{
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_dwRiffTag = RIFF_TAG;
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_dwRiffLength = sizeof(RIFF) + dwLength;
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_dwWaveTag = WAVE_TAG;
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_dwFmtTag = FMT__TAG;
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_dwFmtLength = sizeof(WAVEFORMATEX);
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_wfx.wFormatTag = WAVE_FORMAT_PCM;
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_wfx.nChannels = (ushort)cchan;
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_wfx.nSamplesPerSec = csampSec;
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_wfx.nAvgBytesPerSec = csampSec * cbSample * cchan;
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_wfx.nBlockAlign = (ushort)cchan * (ushort)cbSample;
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_wfx.wBitsPerSample = (ushort)LwMul(8, cbSample);
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_wfx.cbSize = 0;
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_dwDataTag = DATA_TAG;
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_dwDataLength = dwLength;
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}
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LPWAVEFORMATEX PwfxGet() { return &_wfx; };
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DWORD Cb() { return sizeof(RIFF) + _dwDataLength; };
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};
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#pragma pack(pop, _SOCPACK_)
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/****************************************
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The sound recording class
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****************************************/
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typedef class SREC *PSREC;
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#define SREC_PAR BASE
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#define kclsSREC 'SREC'
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class SREC : public SREC_PAR
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{
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RTCLASS_DEC
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ASSERT
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MARKMEM
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protected:
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long _csampSec; // sampling rate (number of samples per second)
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long _cchan; // 1 = mono, 2 = stereo
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long _cbSample; // bytes per sample (1 = 8 bit, 2 = 16 bit, etc)
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ulong _dtsMax; // maximum length to record
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bool _fRecording;
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bool _fPlaying;
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bool _fHaveSound; // have you recorded a sound yet?
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bool _fBufferAdded; // have added record buffer
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HWAVEIN _hwavein; // handle to wavein device
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WAVEHDR _wavehdr; // wave hdr for buffer
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LPMIXER _pmixer; // pointer to Audioman Mixer
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LPCHANNEL _pchannel;// pointer to Audioman Channel
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LPSOUND _psnd; // psnd for current sound
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RIFF *_priff; // pointer to riff in memory
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bool _FOpenRecord();
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bool _FCloseRecord();
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static void _WaveInProc(HWAVEIN hwi, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2);
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protected:
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bool _FInit(long csampSec, long cchan, long cbSample, ulong dtsMax);
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void _UpdateStatus(void);
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public:
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static PSREC PsrecNew(long csampSec, long cchan, long cbSample, ulong dtsMax);
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~SREC(void);
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bool FStart(void);
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bool FStop(void);
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bool FPlay(void);
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bool FRecording(void);
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bool FPlaying(void);
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bool FSave(PFNI pfni);
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bool FHaveSound(void) { return _fHaveSound; }
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};
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#endif SREC_H
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