private void WaveOutOpen()
{
// WAVEデバイス設定
WAVEFORMATEX waveformatex = new WAVEFORMATEX();
waveformatex.wFormatTag = 0x0001; // PCM
waveformatex.nChannels = (ushort)channel_number_;
waveformatex.nSamplesPerSec = (uint)sample_rate_;
waveformatex.wBitsPerSample = (ushort)(bits_per_sample_);
waveformatex.nBlockAlign = (ushort)(waveformatex.nChannels * waveformatex.wBitsPerSample / 8);
waveformatex.nAvgBytesPerSec = waveformatex.nSamplesPerSec * waveformatex.nBlockAlign;
waveformatex.cbSize = 0;
h_wave_out_ = new IntPtr();
dlg_ = new WaveCallbackDelegate(WaveCallbackProc);
System.Diagnostics.Debug.Write("call waveOutOpen");
uint error_code = waveOutOpen(ref h_wave_out_, (IntPtr)0x0000, ref waveformatex, dlg_, (IntPtr)0, 0x00030000);
if (error_code != 0)
{
throw new WaveOutApiException("waveOutOpen", error_code);
}
}
private static extern uint waveOutOpen(ref IntPtr phwo, IntPtr uDeviceID, ref WAVEFORMATEX pwfx, WaveCallbackDelegate dwCallback, IntPtr dwInstance, uint fdwOpen);