/// <summary>
/// Default constructor.
/// </summary>
/// <param name="device">Input device.</param>
/// <param name="samplesPerSec">Sample rate, in samples per second (hertz). For PCM common values are
/// 8.0 kHz, 11.025 kHz, 22.05 kHz, and 44.1 kHz.</param>
/// <param name="bitsPerSample">Bits per sample. For PCM 8 or 16 are the only valid values.</param>
/// <param name="channels">Number of channels.</param>
/// <param name="bufferSize">Specifies recording buffer size.</param>
/// <exception cref="ArgumentNullException">Is raised when <b>outputDevice</b> is null.</exception>
/// <exception cref="ArgumentException">Is raised when any of the aruments has invalid value.</exception>
public _WaveIn(AudioInDevice device, int samplesPerSec, int bitsPerSample, int channels, int bufferSize)
{
if (device == null)
{
throw new ArgumentNullException("device");
}
if (samplesPerSec < 8000)
{
throw new ArgumentException("Argument 'samplesPerSec' value must be >= 8000.");
}
if (bitsPerSample < 8)
{
throw new ArgumentException("Argument 'bitsPerSample' value must be >= 8.");
}
if (channels < 1)
{
throw new ArgumentException("Argument 'channels' value must be >= 1.");
}
m_pInDevice = device;
m_SamplesPerSec = samplesPerSec;
m_BitsPerSample = bitsPerSample;
m_Channels = channels;
m_BufferSize = bufferSize;
m_BlockSize = m_Channels * (m_BitsPerSample / 8);
m_pBuffers = new Dictionary <long, BufferItem>();
// Try to open wav device.
WAVEFORMATEX format = new WAVEFORMATEX();
format.wFormatTag = WavFormat.PCM;
format.nChannels = (ushort)m_Channels;
format.nSamplesPerSec = (uint)samplesPerSec;
format.nAvgBytesPerSec = (uint)(m_SamplesPerSec * (m_Channels * (m_BitsPerSample / 8)));
format.nBlockAlign = (ushort)m_BlockSize;
format.wBitsPerSample = (ushort)m_BitsPerSample;
format.cbSize = 0;
// We must delegate reference, otherwise GC will collect it.
m_pWaveInProc = new waveInProc(this.OnWaveInProc);
int result = waveInOpen(out m_pWavDevHandle, m_pInDevice.Index, format, m_pWaveInProc, 0, WavConstants.CALLBACK_FUNCTION);
if (result != MMSYSERR.NOERROR)
{
throw new Exception("Failed to open wav device, error: " + result.ToString() + ".");
}
CreateBuffers();
}
/// <summary>
/// Default constructor.
/// </summary>
/// <param name="device">Input device.</param>
/// <param name="samplesPerSec">Sample rate, in samples per second (hertz). For PCM common values are
/// 8.0 kHz, 11.025 kHz, 22.05 kHz, and 44.1 kHz.</param>
/// <param name="bitsPerSample">Bits per sample. For PCM 8 or 16 are the only valid values.</param>
/// <param name="channels">Number of channels.</param>
/// <param name="bufferSize">Specifies recording buffer size.</param>
/// <exception cref="ArgumentNullException">Is raised when <b>outputDevice</b> is null.</exception>
/// <exception cref="ArgumentException">Is raised when any of the aruments has invalid value.</exception>
public _WaveIn(AudioInDevice device,int samplesPerSec,int bitsPerSample,int channels,int bufferSize)
{
if(device == null){
throw new ArgumentNullException("device");
}
if(samplesPerSec < 8000){
throw new ArgumentException("Argument 'samplesPerSec' value must be >= 8000.");
}
if(bitsPerSample < 8){
throw new ArgumentException("Argument 'bitsPerSample' value must be >= 8.");
}
if(channels < 1){
throw new ArgumentException("Argument 'channels' value must be >= 1.");
}
m_pInDevice = device;
m_SamplesPerSec = samplesPerSec;
m_BitsPerSample = bitsPerSample;
m_Channels = channels;
m_BufferSize = bufferSize;
m_BlockSize = m_Channels * (m_BitsPerSample / 8);
m_pBuffers = new Dictionary<long,BufferItem>();
// Try to open wav device.
WAVEFORMATEX format = new WAVEFORMATEX();
format.wFormatTag = WavFormat.PCM;
format.nChannels = (ushort)m_Channels;
format.nSamplesPerSec = (uint)samplesPerSec;
format.nAvgBytesPerSec = (uint)(m_SamplesPerSec * (m_Channels * (m_BitsPerSample / 8)));
format.nBlockAlign = (ushort)m_BlockSize;
format.wBitsPerSample = (ushort)m_BitsPerSample;
format.cbSize = 0;
// We must delegate reference, otherwise GC will collect it.
m_pWaveInProc = new waveInProc(this.OnWaveInProc);
int result = waveInOpen(out m_pWavDevHandle,m_pInDevice.Index,format,m_pWaveInProc,0,WavConstants.CALLBACK_FUNCTION);
if(result != MMSYSERR.NOERROR){
throw new Exception("Failed to open wav device, error: " + result.ToString() + ".");
}
CreateBuffers();
}
public static extern int waveInOpen(out IntPtr hWaveOut,int uDeviceID,WAVEFORMATEX lpFormat,waveInProc dwCallback,int dwInstance,int dwFlags);
private static extern int waveInOpen(out IntPtr hWaveOut, int uDeviceID, WAVEFORMATEX lpFormat, waveInProc dwCallback, int dwInstance, int dwFlags);
public static extern int waveInOpen(ref IntPtr hWaveIn, uint deviceId, IntPtr pwfx, waveInProc dwCallBack, uint dwInstance, uint dwFlags);
public static extern int waveInOpen(ref IntPtr hWaveIn, uint deviceId, IntPtr pwfx, waveInProc dwCallBack, uint dwInstance, uint dwFlags);
