uint mixerGetLineControls(IntPtr hmxobj,
ref MIXERLINECONTROLS pmxlc, MIXER_OBJECTF objFlag, MIXER_GETLINECONTROLSF ctlFlag)
{
uint flag = (uint)objFlag | (uint)ctlFlag;
return(mixerGetLineControls(hmxobj, ref pmxlc, flag));
}
uint mixerGetLineInfo(IntPtr hmxobj,
ref MIXERLINE pmxl, MIXER_OBJECTF objF, MIXER_GETLINEINFOF lineF)
{
uint flag = (uint)objF | (uint)lineF;
return(mixerGetLineInfo(hmxobj, ref pmxl, flag));
}
/// <summary>
/// Start playing the audio
/// </summary>
/// <param name="cnsStart"></param>
public void Start(long cnsStart)
{
//
// Ensure that a reader object has been instantiated.
//
if (IsDisposed())
{
throw new COMException("Instance has been Disposed", E_Unexpected);
}
m_OldTime = -1;
//
// Configure the wave output device.
//
if (IntPtr.Zero != m_hWaveOut)
{
int woe = waveOut.Reset(m_hWaveOut);
waveOut.ThrowExceptionForError(woe);
}
else
{
int mmr = waveOut.Open(out m_hWaveOut,
m_DeviceIndex,
m_pWfx,
IntPtr.Zero,
IntPtr.Zero,
WaveOpenFlags.Null);
waveOut.ThrowExceptionForError(mmr);
// If a form was provided
if (m_fForm != null)
{
// Ensure volume change events get sent
MIXER_OBJECTF flags = MIXER_OBJECTF.CallBack_Window | MIXER_OBJECTF.WaveOut;
MMSYSERR rc = Mixer.Open(out m_hMixer, m_DeviceIndex, m_fForm.Handle, IntPtr.Zero, flags);
// Not checking for error. If something goes wrong, rather than fail the call, we
// just won't update the volume bar
}
for (int x = 0; x < MAXBUFFERS; x++)
{
m_InsBuf[x] = new INSBuf(m_hWaveOut, m_MaxSampleSize);
}
}
m_pReader.Start(cnsStart, 0, 1.0f, IntPtr.Zero);
}
static uint mixerSetControlDetails(IntPtr hmxobj, ref MIXERCONTROLDETAILS pmxcd, MIXER_OBJECTF fdwDetails, MIXER_GETCONTROLDETAILSF getControlDetails)
{
uint flags = ((uint)fdwDetails | (uint)getControlDetails);
return mixerSetControlDetails(hmxobj, ref pmxcd, flags);
}
static extern uint mixerOpen(ref IntPtr phmx, uint pMxId,
IntPtr dwCallback, IntPtr dwInstance, MIXER_OBJECTF fdwOpen);
uint mixerGetLineControls(IntPtr hmxobj,
ref MIXERLINECONTROLS pmxlc, MIXER_OBJECTF objFlag, MIXER_GETLINECONTROLSF ctlFlag)
{
uint flag = (uint)objFlag | (uint)ctlFlag;
return mixerGetLineControls(hmxobj, ref pmxlc, flag);
}
uint mixerGetLineInfo(IntPtr hmxobj,
ref MIXERLINE pmxl,MIXER_OBJECTF objF , MIXER_GETLINEINFOF lineF )
{
uint flag = (uint)objF | (uint)lineF;
return mixerGetLineInfo(hmxobj, ref pmxl, flag);
}
static uint mixerSetControlDetails(IntPtr hmxobj, ref MIXERCONTROLDETAILS pmxcd, MIXER_OBJECTF fdwDetails, MIXER_GETCONTROLDETAILSF getControlDetails)
{
uint flags = ((uint)fdwDetails | (uint)getControlDetails);
return(mixerSetControlDetails(hmxobj, ref pmxcd, flags));
}
static extern uint mixerOpen(ref IntPtr phmx, uint pMxId,
IntPtr dwCallback, IntPtr dwInstance, MIXER_OBJECTF fdwOpen);
public static extern MMSYSERR GetID(
IntPtr hmxobj,
out int puMxId,
MIXER_OBJECTF fdwId);
public static extern MMSYSERR Open(
out IntPtr phmx,
int uMxId,
IntPtr dwCallback,
IntPtr dwInstance,
MIXER_OBJECTF fdwOpen);
public static extern MMSYSERR GetControlDetails(
IntPtr hmxobj,
[In, Out, MarshalAs(UnmanagedType.LPStruct)] MixerControlDetails pmxcd,
MIXER_OBJECTF fdwDetails);
