px_win_wmme.c

IAX client库, 一个VOIP的库. 支持H.323和SIP, PBX就是采用的它

		details.cChannels = 1 ;
		details.cbDetails = sizeof( MIXERCONTROLDETAILS_LISTTEXT ) ;
		details.paDetails = ( LPMIXERCONTROLDETAILS_LISTTEXT )&mixList[0] ;
		details.cMultipleItems = mixer->numInputs ;
		
		mmr = mixerGetControlDetails(
			( HMIXEROBJ )( mixer->hInputMixer ), 
			( LPMIXERCONTROLDETAILS )&details,
			MIXER_GETCONTROLDETAILSF_LISTTEXT
		) ;
		
		if ( mmr == MMSYSERR_NOERROR )
		{		
			int j = 0 ;
			for ( ; j < mixer->numInputs ; ++j ) 
			{
				// record the control's name and line id
				strcpy( mixer->src[j].name, mixList[j].szName ) ;
				mixer->src[j].lineID = mixList[j].dwParam1 ;

				// now get the control's volume control
				
				MIXERCONTROL control ;
			
				MIXERLINECONTROLS controls ;
				controls.cbStruct = sizeof( MIXERLINECONTROLS ) ;
				controls.dwLineID = mixList[j].dwParam1 ;
				controls.dwControlType = MIXERCONTROL_CONTROLTYPE_VOLUME ;
				controls.cbmxctrl = sizeof( MIXERCONTROL ) ;
				controls.pamxctrl = &control ;
			
				control.cbStruct = sizeof( MIXERCONTROL ) ;
			
				mmr = mixerGetLineControls(
					mixer->hInputMixer,
					&controls,
					MIXER_GETLINECONTROLSF_ONEBYTYPE
				) ;

				if ( mmr != MMSYSERR_NOERROR )
					break ;
				
				mixer->src[j].controlID = control.dwControlID ;

//				fprintf( stdout, "INPUT :: index => %d, name => %s, lineID => %u\n", 
//					j, mixer->src[j].name, mixer->src[j].lineID, mixer->src[j].controlID ) ;
			}
		}
	}

	// if there was a problem with the muxID, 
	// reset so we can try the line controls directly
	if ( mmr != MMSYSERR_NOERROR )
	{
		mixer->useMuxID = 0 ;
	}

	if ( mixer->useMuxID == 0 )
	{
		// no mux, use line controls instead
	
		// remember number of connections ( sources ) for this line
		int sources = mixerLine.cConnections ;
		int j ;
		
		for ( j = 0 ; j < sources ; ++j )
		{
			//
			// get info about the current connection
			//
	
			MIXERLINE line ;
			line.cbStruct = sizeof( MIXERLINE ) ;
			line.dwSource = j ;
			line.dwDestination = mixerLine.dwDestination ;
	
			mmr = mixerGetLineInfo( 
				( HMIXEROBJ )( mixer->hInputMixer ),
				&line, 
				MIXER_GETLINEINFOF_SOURCE
			) ;
			
			if ( mmr != MMSYSERR_NOERROR )
				continue ;
	
			//
			// save line info
			//
	
			strcpy( mixer->src[j].name, line.szName ) ;
			mixer->src[j].lineID = line.dwLineID ;
			mixer->src[j].controlID = -1 ; // unfortunately, dwControlID is unsigned....
	
			if ( line.cControls == 0 )
				continue ;
	
			//
			// find line's volume control
			//
	
			LPMIXERCONTROL mixerControl = malloc( sizeof( MIXERCONTROL ) * line.cControls ) ;
			
			// Find a volume control, if any, of the microphone line
			MIXERLINECONTROLS mixerLineControls ;
			mixerLineControls.cbStruct = sizeof( MIXERLINECONTROLS ) ;
			mixerLineControls.dwLineID = line.dwLineID ;
			mixerLineControls.dwControlType = MIXERCONTROL_CONTROLTYPE_VOLUME ;
			mixerLineControls.cControls = line.cControls ;
			mixerLineControls.cbmxctrl = sizeof( MIXERCONTROL ) ;
			mixerLineControls.pamxctrl = mixerControl ;
			
			mmr = mixerGetLineControls(
				( HMIXEROBJ )( mixer->hInputMixer ), 
				&mixerLineControls,
				MIXER_GETLINECONTROLSF_ONEBYTYPE
			) ;
			
			if ( mmr != MMSYSERR_NOERROR )
				continue ;
					
			int x = 0 ;
			for ( ; x < line.cControls ; ++x )
			{
				mixer->src[j].controlID = mixerControl[x].dwControlID ;

				// use first volume control
				break ;
			}
			
//			fprintf( stdout, "INPUT :: index => %d, name => %s, lineID => %u\n", 
//				j, mixer->src[j].name, mixer->src[j].lineID ) ;
	
			free( mixerControl ) ;
		}
	}

	//
	// report findings
	//
	
	return MMSYSERR_NOERROR ;
}

MMRESULT
_Px_InitOutputVolumeControls( PxInfo* mixer, int hWaveOut ) 
{
	MMRESULT mmr ;

	// cast void pointer
	PxInfo* info = ( PxInfo* )( mixer ) ;
	
	if ( info == NULL ) 
		return MMSYSERR_ERROR ;
	
	// default win32 speaker control id
	mixer->speakerID = 0x00000000 ;
	
	//
	// open the mixer device
	//
	
	mmr = mixerOpen( 
		( LPHMIXER )( &mixer->hOutputMixer ), 
		hWaveOut, 0, 0,
		MIXER_OBJECTF_HWAVEOUT 
	) ;

	if ( mmr != MMSYSERR_NOERROR )
		return mmr ;
	

	// set default values
	mixer->speakerID = 0 ;
	mixer->waveID = 0 ;

	//
	// MASTER VOLUME
	//

	while ( 42 ) 
	{
		//
		// get the line info for the dst speakers
		//

		MIXERLINE mixerLine ;
		mixerLine.cbStruct = sizeof( MIXERLINE ) ;
		mixerLine.dwComponentType = MIXERLINE_COMPONENTTYPE_DST_SPEAKERS ;
		
		mmr = mixerGetLineInfo(
			( HMIXEROBJ )( mixer->hOutputMixer ),
			&mixerLine,
			MIXER_GETLINEINFOF_COMPONENTTYPE
		) ;
		
		if ( mmr != MMSYSERR_NOERROR )
		{
			mixerClose( ( HMIXER )( mixer->hOutputMixer ) ) ;
			break ;
		}
	
		// no controls, don't go any further
		if ( mixerLine.cControls <= 0 )
			break ;

		//
		// get volume control for dst speakers line
		//
	
		MIXERCONTROL mixerControl ;
		mixerControl.cbStruct = sizeof( MIXERCONTROL ) ;
	
		MIXERLINECONTROLS mixerLineControls ;
		mixerLineControls.cbStruct = sizeof( MIXERLINECONTROLS ) ;
		mixerLineControls.dwLineID = mixerLine.dwLineID ;
		mixerLineControls.dwControlType = MIXERCONTROL_CONTROLTYPE_VOLUME ;
		mixerLineControls.cbmxctrl = sizeof( MIXERCONTROL ) ;
		mixerLineControls.pamxctrl = &mixerControl ;
		
		mmr = mixerGetLineControls(
			( HMIXEROBJ )( mixer->hOutputMixer ),
			&mixerLineControls,
			MIXER_GETLINECONTROLSF_ONEBYTYPE
		) ;
		
		if ( mmr != MMSYSERR_NOERROR )
		{
			mixerClose( ( HMIXER )( mixer->hInputMixer ) ) ;
		}
		else
		{
			// save speaker_id
			mixer->speakerID = mixerControl.dwControlID ;
		}
	
		break ;
	}
	
	//
	// PCM VOLUME
	//

	while ( 42 ) 
	{
		//
		// get the line info for the dst speakers
		//
	
		MIXERLINE mixerLine ;
		mixerLine.cbStruct = sizeof( MIXERLINE ) ;
		mixerLine.dwComponentType = MIXERLINE_COMPONENTTYPE_SRC_WAVEOUT ;
		
		mmr = mixerGetLineInfo(
			( HMIXEROBJ )( mixer->hOutputMixer ),
			&mixerLine,
			MIXER_GETLINEINFOF_COMPONENTTYPE
		) ;
		
		if ( mmr != MMSYSERR_NOERROR )
		{
			mixerClose( ( HMIXER )( mixer->hOutputMixer ) ) ;
			break ;
		}
	
		// no controls, don't go any further
		if ( mixerLine.cControls <= 0 )
			break ;
	
		//
		// get volume control for dst speakers line
		//
	
		MIXERCONTROL mixerControl ;
		mixerControl.cbStruct = sizeof( MIXERCONTROL ) ;
	
		MIXERLINECONTROLS mixerLineControls ;
		mixerLineControls.cbStruct = sizeof( MIXERLINECONTROLS ) ;
		mixerLineControls.dwLineID = mixerLine.dwLineID ;
		mixerLineControls.dwControlType = MIXERCONTROL_CONTROLTYPE_VOLUME ;
		mixerLineControls.cbmxctrl = sizeof( MIXERCONTROL ) ;
		mixerLineControls.pamxctrl = &mixerControl ;
		
		mmr = mixerGetLineControls(
			( HMIXEROBJ )( mixer->hOutputMixer ),
			&mixerLineControls,
			MIXER_GETLINECONTROLSF_ONEBYTYPE
		) ;
		
		if ( mmr != MMSYSERR_NOERROR )
		{
			mixerClose( ( HMIXER )( mixer->hInputMixer ) ) ;
		}
		else
		{
			// save speaker_id
			mixer->waveID = mixerControl.dwControlID ;
		}
		
		break ;
	}
	
	return MMSYSERR_NOERROR ;
}

MMRESULT _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 = 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 )
		return mmr ;

	//
	// find boost control
	//

	DWORD boost_id = -1 ;
	int x = 0 ;
	
	for ( ; x < mixerLineControls.cControls ; ++x )
	{
		// check control type
		if ( mixerControl[x].dwControlType == MIXERCONTROL_CONTROLTYPE_ONOFF )
		{
			// 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 )
		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 )
		return mmr ;

	//
	// update value
	//

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

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

	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 = 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 )
		return -1 ;

	//
	// find boost control
	//

	DWORD boost_id = -1 ;
	int x = 0 ;
	
	for ( ; x < mixerLineControls.cControls ; ++x )
	{
		// check control type
		if ( mixerControl[x].dwControlType == MIXERCONTROL_CONTROLTYPE_ONOFF )
		{
			// 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 )
		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
	) ;

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

MMRESULT 
_Px_SetCurrentInputSourceByName( PxInfo* 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 ;
}