/// <summary>
/// Открывает устройство и запоминает его Handle.
/// </summary>
/// <param name="aDeviceId">Идентификатор устройства.</param>
/// <returns>Если != 0 то произошла ошибка.</returns>
private int OpenDevice(int aDeviceId)
{
var format = new WAVEFORMATEX {
WFormatTag = (short)WAVEFORMATTAG.WAVE_FORMAT_PCM,
NChannels = (short)channelsCount,
NSamplesPerSec = samplePerSec,
NAvgBytesPerSec = samplePerSec * bytePerSample * channelsCount,
WBitsPerSample = (short)(8 * bytePerSample),
NBlockAlign = (short)(bytePerSample * channelsCount),
CbSize = 0
};
return (int)NativeMethods.waveOutOpen(ref this.handle, (uint)aDeviceId, ref format, null, (IntPtr)0, 0);
}
public static extern uint waveOutOpen(ref IntPtr hWaveOut, uint uDeviceId, ref WAVEFORMATEX lpFormat,
WaveOutProc dwCallback, IntPtr dwInstance, uint dwFlags);
/// <summary>
/// Получает handle для физического устройства.
/// </summary>
/// <param name="aDeviceId">Идентификатор устройства в системе.</param>
/// <returns>Результат. Если != 0, значит ошибка.</returns>
private int OpenDevice(int aDeviceId)
{
var format = new WAVEFORMATEX {
WFormatTag = (short)WAVEFORMATTAG.WAVE_FORMAT_PCM,
NChannels = (short)channelsCount,
NSamplesPerSec = samplePerSec,
NAvgBytesPerSec = samplePerSec * bytePerSample * channelsCount,
NBlockAlign = (short)(bytePerSample * channelsCount),
WBitsPerSample = (short)(8 * bytePerSample),
CbSize = 0
};
return (int)NativeMethods.waveInOpen(ref handle, (uint)aDeviceId, ref format,
IntPtr.Zero, 0, (uint)WAVEINOPENFLAGS.WAVE_FORMAT_DIRECT);
}
public static extern uint waveInOpen(ref IntPtr hWaveIn, uint deviceId, ref WAVEFORMATEX lpFormat,
IntPtr dwCallBack, uint dwInstance, uint dwFlags);
