px_win_wmme.c

来自网络的iaxclient的协议栈源码

   PxInfo *info = (PxInfo *)mixer;

   return 2;
}

const char *Px_GetOutputVolumeName( PxMixer *mixer, int i )
{
   PxInfo *info = (PxInfo *)mixer;
   
   if (i==1)
      return "Wave Out";
   else
      return "Master Volume";
}

PxVolume Px_GetOutputVolume( PxMixer *mixer, int i )
{
   PxInfo *info = (PxInfo *)mixer;

   if (i==1)
      return Px_GetPCMOutputVolume(mixer);
   else
      return Px_GetMasterVolume(mixer);
}

void Px_SetOutputVolume( PxMixer *mixer, int i, PxVolume volume )
{
   PxInfo *info = (PxInfo *)mixer;

   if (i==1)
      Px_SetPCMOutputVolume(mixer, volume);
   else
      Px_SetMasterVolume(mixer, volume);
}

/*
 Input sources
*/

int Px_GetNumInputSources( PxMixer *mixer )
{
   PxInfo *info = (PxInfo *)mixer;
   
   return info->numInputs;
}

const char *Px_GetInputSourceName( PxMixer *mixer, int i)
{
   PxInfo *info = (PxInfo *)mixer;
   
   return info->src[i].name;
}

int Px_GetCurrentInputSource( PxMixer *mixer )
{
   PxInfo *info = (PxInfo *)mixer;
   MIXERCONTROLDETAILS details;
   MIXERCONTROLDETAILS_BOOLEAN flags[32];
   MMRESULT result;
   int i;

   details.cbStruct = sizeof(MIXERCONTROLDETAILS);
   details.dwControlID = info->muxID;
   details.cMultipleItems = info->numInputs;
   details.cChannels = 1;   
   details.cbDetails = sizeof(MIXERCONTROLDETAILS_BOOLEAN);
   details.paDetails = (LPMIXERCONTROLDETAILS_BOOLEAN)&flags[0];

   result = mixerGetControlDetails(info->hInputMixer,
                                   (LPMIXERCONTROLDETAILS)&details,
                                   MIXER_GETCONTROLDETAILSF_VALUE);

   if (result == MMSYSERR_NOERROR) {
      for(i=0; i<info->numInputs; i++)
         if (flags[i].fValue)
            return i;
   }

   return 0;
}

void Px_SetCurrentInputSource( PxMixer *mixer, int i )
{
   PxInfo *info = (PxInfo *)mixer;
   MIXERCONTROLDETAILS details;
   MIXERCONTROLDETAILS_BOOLEAN flags[32];
   MMRESULT result;
   int j;

   details.cbStruct = sizeof(MIXERCONTROLDETAILS);
   details.dwControlID = info->muxID;
   details.cMultipleItems = info->numInputs;
   details.cChannels = 1;   
   details.cbDetails = sizeof(MIXERCONTROLDETAILS_BOOLEAN);
   details.paDetails = (LPMIXERCONTROLDETAILS_BOOLEAN)&flags[0];

   for(j=0; j<info->numInputs; j++)
      flags[j].fValue = (i == j);

   result = mixerSetControlDetails(info->hInputMixer,
                                   (LPMIXERCONTROLDETAILS)&details,
                                   MIXER_SETCONTROLDETAILSF_VALUE);
}

/*
 Input volume
*/

PxVolume Px_GetInputVolume( PxMixer *mixer )
{
   PxInfo *info = (PxInfo *)mixer;
   PxVolume vol;
   int src = Px_GetCurrentInputSource(mixer);

   vol = -1.0;
   VolumeFunction(info->hInputMixer, info->src[src].controlID, &vol);
   return vol;
}

void Px_SetInputVolume( PxMixer *mixer, PxVolume volume )
{
   PxInfo *info = (PxInfo *)mixer;
   int src = Px_GetCurrentInputSource(mixer);

   VolumeFunction(info->hInputMixer, info->src[src].controlID, &volume);
}

/*
  Balance
*/

int Px_SupportsOutputBalance( PxMixer *mixer )
{
   return 0;
}

PxBalance Px_GetOutputBalance( PxMixer *mixer )
{
   return 0.0;
}

void Px_SetOutputBalance( PxMixer *mixer, PxBalance balance )
{
}

/*
  Playthrough
*/

int Px_SupportsPlaythrough( PxMixer *mixer )
{
   return 0;
}

PxVolume Px_GetPlaythrough( PxMixer *mixer )
{
   return 0.0;
}

void Px_SetPlaythrough( PxMixer *mixer, PxVolume volume )
{
}





int Px_SetMicrophoneBoost( PxMixer* mixer, int enable )
{
	MMRESULT mmr = MMSYSERR_ERROR ;
	
	// cast void pointer
	PxInfo* info = ( PxInfo* )( mixer ) ;

	if ( info == NULL ) 
		return MMSYSERR_ERROR ;
		
	//
	// get line info
	//
	
	MIXERLINE mixerLine ;
    mixerLine.cbStruct = sizeof( MIXERLINE ) ;
    mixerLine.dwComponentType = MIXERLINE_COMPONENTTYPE_SRC_MICROPHONE ;
	
	mmr = mixerGetLineInfo(
		( HMIXEROBJ )( info->hInputMixer ),
		&mixerLine,
		MIXER_GETLINEINFOF_COMPONENTTYPE
	) ;

	if ( mmr != MMSYSERR_NOERROR )
		return mmr ;

	//
	// get all controls
	//

	LPMIXERCONTROL mixerControl = (MIXERCONTROL *)malloc( sizeof( MIXERCONTROL ) * mixerLine.cControls ) ;
	
	MIXERLINECONTROLS mixerLineControls ;
	mixerLineControls.cbStruct = sizeof( MIXERLINECONTROLS ) ;
	mixerLineControls.dwLineID = mixerLine.dwLineID ;
	mixerLineControls.cControls = mixerLine.cControls ;
	mixerLineControls.cbmxctrl = sizeof( MIXERCONTROL ) ;
	mixerLineControls.pamxctrl = ( LPMIXERCONTROL )( mixerControl ) ;
	
	mmr = mixerGetLineControls(
		( HMIXEROBJ )( info->hInputMixer ), 
		&mixerLineControls,
		MIXER_GETLINECONTROLSF_ALL
	) ;
	
	if ( mmr != MMSYSERR_NOERROR )
	{
		free(mixerControl);

		return mmr ;
	}

	//
	// find boost control
	//

	DWORD boost_id = -1 ;
	DWORD x = 0 ;
	
	for ( ; x < mixerLineControls.cControls ; ++x )
	{
		// check control type
		if ( mixerControl[x].dwControlType & MIXERCONTROL_CONTROLTYPE_BOOLEAN )
		{
			// normalize control name
			char* name = _strupr( mixerControl[x].szName ) ;

			// check for 'mic' and 'boost'
			if (
				( strstr( name, "MIC" ) != NULL )
				&& ( strstr( name, "BOOST" ) != NULL )
			)
			{
				boost_id = mixerControl[x].dwControlID ;
				break ;
			}
		}
	}

	if ( boost_id == -1 )
	{
		free(mixerControl);

		return MMSYSERR_ERROR ;
	}

	//
	// get control details
	//
	
	MIXERCONTROLDETAILS_BOOLEAN value ;

	MIXERCONTROLDETAILS mixerControlDetails ;
	mixerControlDetails.cbStruct = sizeof( MIXERCONTROLDETAILS ) ;
	mixerControlDetails.dwControlID = boost_id ;
	mixerControlDetails.cChannels = 1 ;
	mixerControlDetails.cMultipleItems = 0 ;
	mixerControlDetails.cbDetails = sizeof( MIXERCONTROLDETAILS_BOOLEAN ) ;
	mixerControlDetails.paDetails = &value ;

	mmr = mixerGetControlDetails( 
		( HMIXEROBJ )( info->hInputMixer ),
		&mixerControlDetails,
		MIXER_GETCONTROLDETAILSF_VALUE
	) ;

	if ( mmr != MMSYSERR_NOERROR )
	{
		free(mixerControl);

		return mmr ;
	}

	//
	// update value
	//

	value.fValue = ( enable == 0 ) ? 0L : 1L ;

	//
	// set control details
	//
	
	mmr = mixerSetControlDetails( 
		( HMIXEROBJ )( info->hInputMixer ),
		&mixerControlDetails,
		MIXER_SETCONTROLDETAILSF_VALUE
	) ;

	free(mixerControl);

	if ( mmr != MMSYSERR_NOERROR )
		return mmr ;
	
	return mmr ;
}

int Px_GetMicrophoneBoost( PxMixer* mixer )
{
	MMRESULT mmr = MMSYSERR_ERROR ;
	
	// cast void pointer
	PxInfo* info = ( PxInfo* )( mixer ) ;

	if ( info == NULL ) 
		return -1 ;
		
	//
	// get line info
	//
	
	MIXERLINE mixerLine ;
    mixerLine.cbStruct = sizeof( MIXERLINE ) ;
    mixerLine.dwComponentType = MIXERLINE_COMPONENTTYPE_SRC_MICROPHONE ;
	
	mmr = mixerGetLineInfo(
		( HMIXEROBJ )( info->hInputMixer ),
		&mixerLine,
		MIXER_GETLINEINFOF_COMPONENTTYPE
	) ;

	if ( mmr != MMSYSERR_NOERROR )
		return -1 ;

	//
	// get all controls
	//

	LPMIXERCONTROL mixerControl = (MIXERCONTROL *)malloc( sizeof( MIXERCONTROL ) * mixerLine.cControls ) ;
	
	MIXERLINECONTROLS mixerLineControls ;
	mixerLineControls.cbStruct = sizeof( MIXERLINECONTROLS ) ;
	mixerLineControls.dwLineID = mixerLine.dwLineID ;
	mixerLineControls.cControls = mixerLine.cControls ;
	mixerLineControls.cbmxctrl = sizeof( MIXERCONTROL ) ;
	mixerLineControls.pamxctrl = ( LPMIXERCONTROL )( mixerControl ) ;
	
	mmr = mixerGetLineControls(
		( HMIXEROBJ )( info->hInputMixer ), 
		&mixerLineControls,
		MIXER_GETLINECONTROLSF_ALL
	) ;
	
	if ( mmr != MMSYSERR_NOERROR )
	{
		free(mixerControl);

		return -1 ;
	}

	//
	// find boost control
	//

	DWORD boost_id = -1 ;
	DWORD x = 0 ;
	
	for ( ; x < mixerLineControls.cControls ; ++x )
	{
		// check control type
		if ( mixerControl[x].dwControlType & MIXERCONTROL_CONTROLTYPE_BOOLEAN )
		{
			// normalize control name
			char* name = _strupr( mixerControl[x].szName ) ;

			// check for 'mic' and 'boost'
			if (
				( strstr( name, "MIC" ) != NULL )
				&& ( strstr( name, "BOOST" ) != NULL )
			)
			{
				boost_id = mixerControl[x].dwControlID ;
				break ;
			}
		}
	}

	if ( boost_id == -1 )
	{
		free(mixerControl);

		return -1 ;
	}

	//
	// get control details
	//
	
	MIXERCONTROLDETAILS_BOOLEAN value ;

	MIXERCONTROLDETAILS mixerControlDetails ;
	mixerControlDetails.cbStruct = sizeof( MIXERCONTROLDETAILS ) ;
	mixerControlDetails.dwControlID = boost_id ;
	mixerControlDetails.cChannels = 1 ;
	mixerControlDetails.cMultipleItems = 0 ;
	mixerControlDetails.cbDetails = sizeof( MIXERCONTROLDETAILS_BOOLEAN ) ;
	mixerControlDetails.paDetails = &value ;

	mmr = mixerGetControlDetails( 
		( HMIXEROBJ )( info->hInputMixer ),
		&mixerControlDetails,
		MIXER_GETCONTROLDETAILSF_VALUE
	) ;

	free(mixerControl);

	if ( mmr != MMSYSERR_NOERROR )
		return -1 ;
	
	return ( int )( value.fValue ) ;
}

int Px_SetCurrentInputSourceByName( PxMixer* mixer, const char* name ) 
{
	// cast void pointer
	PxInfo* info = ( PxInfo* )( mixer ) ;

	// make sure we have a mixer
	if ( info == NULL ) 
		return MMSYSERR_ERROR ;

	// make sure we have a search name
	if ( name == NULL )
		return MMSYSERR_ERROR ;

	//
	// set input source
	//

	int x = 0 ;
	for ( ; x < info->numInputs ; ++x )
	{
		// compare passed name with control name
		if ( strncasecmp( info->src[x].name, name, strlen( name ) ) == 0 )
		{
			// set input source
			Px_SetCurrentInputSource( mixer, x ) ;
			
			// make sure set'ing worked
			if ( Px_GetCurrentInputSource( mixer ) == x )
				return MMSYSERR_NOERROR ;
			else
				return MMSYSERR_ERROR ;
		}
	}

	return MMSYSERR_ERROR ;
}