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tdemultimedia/kmix/mixer_sun.cpp

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/*
* KMix -- KDE's full featured mini mixer
*
*
* Copyright (C) 1996-2000 Christian Esken <esken@kde.org>
* 2000 Brian Hanson <bhanson@hotmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/file.h>
#include <sys/audioio.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include "mixer_sun.h"
//======================================================================
// CONSTANT/ENUM DEFINITIONS
//======================================================================
//
// Mixer Device Numbers
//
// Note: We can't just use the Sun port #defines because :
// 1) Some logical devices don't correspond to ports (master&recmon)
// 2) The play and record port definitions reuse the same values
//
enum MixerDevs
{
MIXERDEV_MASTER_VOLUME,
MIXERDEV_INTERNAL_SPEAKER,
MIXERDEV_HEADPHONE,
MIXERDEV_LINE_OUT,
MIXERDEV_RECORD_MONITOR,
MIXERDEV_MICROPHONE,
MIXERDEV_LINE_IN,
MIXERDEV_CD,
// Insert new devices before this marker
MIXERDEV_END_MARKER
};
const int numDevs = MIXERDEV_END_MARKER;
//
// Device name strings
//
const char* MixerDevNames[] =
{
I18N_NOOP("Master Volume"),
I18N_NOOP("Internal Speaker"),
I18N_NOOP("Headphone"),
I18N_NOOP("Line Out"),
I18N_NOOP("Record Monitor"),
I18N_NOOP("Microphone"),
I18N_NOOP("Line In"),
I18N_NOOP("CD")
};
//
// Channel types (this specifies which icon to display)
//
const MixDevice::ChannelType MixerChannelTypes[] =
{
MixDevice::VOLUME, // MASTER_VOLUME
MixDevice::AUDIO, // INTERNAL_SPEAKER
MixDevice::EXTERNAL, // HEADPHONE (we really need an icon for this)
MixDevice::EXTERNAL, // LINE_OUT
MixDevice::RECMONITOR, // RECORD_MONITOR
MixDevice::MICROPHONE, // MICROPHONE
MixDevice::EXTERNAL, // LINE_IN
MixDevice::CD // CD
};
//
// Mapping from device numbers to Sun port mask values
//
const uint_t MixerSunPortMasks[] =
{
0, // MASTER_VOLUME - no associated port
AUDIO_SPEAKER,
AUDIO_HEADPHONE,
AUDIO_LINE_OUT,
0, // RECORD_MONITOR - no associated port
AUDIO_MICROPHONE,
AUDIO_LINE_IN,
AUDIO_CD
};
//======================================================================
// FUNCTION/TQT_METHOD DEFINITIONS
//======================================================================
//======================================================================
// FUNCTION : SUN_getMixer
// DESCRIPTION : Creates and returns a new mixer object.
//======================================================================
Mixer_Backend* SUN_getMixer( int devnum )
{
Mixer_Backend *l_mixer;
l_mixer = new Mixer_SUN( devnum );
return l_mixer;
}
//======================================================================
// FUNCTION : Mixer::Mixer
// DESCRIPTION : Class constructor.
//======================================================================
Mixer_SUN::Mixer_SUN(int devnum) : Mixer_Backend(devnum)
{
if ( devnum == -1 )
m_devnum = 0;
}
//======================================================================
// FUNCTION : Mixer::Mixer
// DESCRIPTION : Class destructor.
//======================================================================
Mixer_SUN::~Mixer_SUN()
{
close();
}
//======================================================================
// FUNCTION : Mixer::open
// DESCRIPTION : Initialize the mixer and open the hardware driver.
//======================================================================
int Mixer_SUN::open()
{
//
// We don't support multiple devices
//
if ( m_devnum !=0 )
return Mixer::ERR_OPEN;
//
// Open the mixer hardware driver
//
TQCString audiodev(getenv("AUDIODEV"));
if(audiodev.isNull())
audiodev = "/dev/audio";
audiodev += "ctl";
if ( ( fd = ::open( audiodev.data(), O_RDWR ) ) < 0 )
{
if ( errno == EACCES )
return Mixer::ERR_PERM;
else
return Mixer::ERR_OPEN;
}
else
{
//
// Mixer is open. Now define all of the mix devices.
//
if( m_mixDevices.isEmpty() )
{
for ( int idx = 0; idx < numDevs; idx++ )
{
Volume vol( 2, AUDIO_MAX_GAIN );
readVolumeFromHW( idx, vol );
MixDevice* md = new MixDevice( idx, vol, false, true,
TQString(MixerDevNames[idx]), MixerChannelTypes[idx]);
md->setRecSource( isRecsrcHW( idx ) );
m_mixDevices.append( md );
}
}
else
{
for( unsigned int idx = 0; idx < m_mixDevices.count(); idx++ )
{
MixDevice* md = m_mixDevices.at( idx );
if( !md )
return Mixer::ERR_INCOMPATIBLESET;
writeVolumeToHW( idx, md->getVolume() );
}
}
m_mixerName = "SUN Audio Mixer";
m_isOpen = true;
return 0;
}
}
//======================================================================
// FUNCTION : Mixer::close
// DESCRIPTION : Close the hardware driver.
//======================================================================
int Mixer_SUN::close()
{
m_isOpen = false;
int l_i_ret = ::close( fd );
m_mixDevices.clear();
return l_i_ret;
}
//======================================================================
// FUNCTION : Mixer::errorText
// DESCRIPTION : Convert an error code enum to a text string.
//======================================================================
TQString Mixer_SUN::errorText( int mixer_error )
{
TQString errmsg;
switch (mixer_error)
{
case Mixer::ERR_PERM:
errmsg = i18n(
"kmix: You do not have permission to access the mixer device.\n"
"Ask your system administrator to fix /dev/audioctl to allow access."
);
break;
default:
errmsg = Mixer_Backend::errorText( mixer_error );
}
return errmsg;
}
//======================================================================
// FUNCTION : Mixer::readVolumeFrmoHW
// DESCRIPTION : Read the audio information from the driver.
//======================================================================
int Mixer_SUN::readVolumeFromHW( int devnum, Volume& volume )
{
audio_info_t audioinfo;
uint_t devMask = MixerSunPortMasks[devnum];
//
// Read the current audio information from the driver
//
if ( ioctl( fd, AUDIO_GETINFO, &audioinfo ) < 0 )
{
return( Mixer::ERR_READ );
}
else
{
//
// Extract the appropriate fields based on the requested device
//
switch ( devnum )
{
case MIXERDEV_MASTER_VOLUME :
volume.setMuted( audioinfo.output_muted );
GainBalanceToVolume( audioinfo.play.gain,
audioinfo.play.balance,
volume );
break;
case MIXERDEV_RECORD_MONITOR :
volume.setMuted(FALSE);
volume.setAllVolumes( audioinfo.monitor_gain );
break;
case MIXERDEV_INTERNAL_SPEAKER :
case MIXERDEV_HEADPHONE :
case MIXERDEV_LINE_OUT :
volume.setMuted( (audioinfo.play.port & devMask) ? FALSE : TRUE );
GainBalanceToVolume( audioinfo.play.gain,
audioinfo.play.balance,
volume );
break;
case MIXERDEV_MICROPHONE :
case MIXERDEV_LINE_IN :
case MIXERDEV_CD :
volume.setMuted( (audioinfo.record.port & devMask) ? FALSE : TRUE );
GainBalanceToVolume( audioinfo.record.gain,
audioinfo.record.balance,
volume );
break;
default :
return Mixer::ERR_NODEV;
}
return 0;
}
}
//======================================================================
// FUNCTION : Mixer::writeVolumeToHW
// DESCRIPTION : Write the specified audio settings to the hardware.
//======================================================================
int Mixer_SUN::writeVolumeToHW( int devnum, Volume &volume )
{
uint_t gain;
uchar_t balance;
uchar_t mute;
//
// Convert the Volume(left vol, right vol) to the Gain/Balance Sun uses
//
VolumeToGainBalance( volume, gain, balance );
mute = volume.isMuted() ? 1 : 0;
//
// Read the current audio settings from the hardware
//
audio_info_t audioinfo;
if ( ioctl( fd, AUDIO_GETINFO, &audioinfo ) < 0 )
{
return( Mixer::ERR_READ );
}
//
// Now, based on the devnum that we are writing to, update the appropriate
// volume field and twiddle the appropriate bitmask to enable/mute the
// device as necessary.
//
switch ( devnum )
{
case MIXERDEV_MASTER_VOLUME :
audioinfo.play.gain = gain;
audioinfo.play.balance = balance;
audioinfo.output_muted = mute;
break;
case MIXERDEV_RECORD_MONITOR :
audioinfo.monitor_gain = gain;
// no mute or balance for record monitor
break;
case MIXERDEV_INTERNAL_SPEAKER :
case MIXERDEV_HEADPHONE :
case MIXERDEV_LINE_OUT :
audioinfo.play.gain = gain;
audioinfo.play.balance = balance;
if ( mute )
audioinfo.play.port &= ~MixerSunPortMasks[devnum];
else
audioinfo.play.port |= MixerSunPortMasks[devnum];
break;
case MIXERDEV_MICROPHONE :
case MIXERDEV_LINE_IN :
case MIXERDEV_CD :
audioinfo.record.gain = gain;
audioinfo.record.balance = balance;
if ( mute )
audioinfo.record.port &= ~MixerSunPortMasks[devnum];
else
audioinfo.record.port |= MixerSunPortMasks[devnum];
break;
default :
return Mixer::ERR_NODEV;
}
//
// Now that we've updated the audioinfo struct, write it back to the hardware
//
if ( ioctl( fd, AUDIO_SETINFO, &audioinfo ) < 0 )
{
return( Mixer::ERR_WRITE );
}
else
{
return 0;
}
}
//======================================================================
// FUNCTION : Mixer::setRecsrcHW
// DESCRIPTION :
//======================================================================
bool Mixer_SUN::setRecsrcHW( int /* devnum */, bool /* on */ )
{
return FALSE;
}
//======================================================================
// FUNCTION : Mixer::isRecsrcHW
// DESCRIPTION : Returns true if the specified device is a record source.
//======================================================================
bool Mixer_SUN::isRecsrcHW( int devnum )
{
switch ( devnum )
{
case MIXERDEV_MICROPHONE :
case MIXERDEV_LINE_IN :
case MIXERDEV_CD :
return TRUE;
default :
return FALSE;
}
}
//======================================================================
// FUNCTION : Mixer::VolumeToGainBalance
// DESCRIPTION : Converts a Volume(left vol + right vol) into the
// Gain/Balance values used by Sun.
//======================================================================
void Mixer_SUN::VolumeToGainBalance( Volume& volume, uint_t& gain, uchar_t& balance )
{
if ( ( volume.count() == 1 ) ||
( volume[Volume::LEFT] == volume[Volume::RIGHT] ) )
{
gain = volume[Volume::LEFT];
balance = AUDIO_MID_BALANCE;
}
else
{
if ( volume[Volume::LEFT] > volume[Volume::RIGHT] )
{
gain = volume[Volume::LEFT];
balance = AUDIO_LEFT_BALANCE +
( AUDIO_MID_BALANCE - AUDIO_LEFT_BALANCE ) *
volume[Volume::RIGHT] / volume[Volume::LEFT];
}
else
{
gain = volume[Volume::RIGHT];
balance = AUDIO_RIGHT_BALANCE -
( AUDIO_RIGHT_BALANCE - AUDIO_MID_BALANCE ) *
volume[Volume::LEFT] / volume[Volume::RIGHT];
}
}
}
//======================================================================
// FUNCTION : Mixer::GainBalanceToVolume
// DESCRIPTION : Converts Gain/Balance returned by Sun driver to the
// Volume(left vol + right vol) format used by kmix.
//======================================================================
void Mixer_SUN::GainBalanceToVolume( uint_t& gain, uchar_t& balance, Volume& volume )
{
if ( volume.count() == 1 )
{
volume.setVolume( Volume::LEFT, gain );
}
else
{
if ( balance <= AUDIO_MID_BALANCE )
{
volume.setVolume( Volume::LEFT, gain );
volume.setVolume( Volume::RIGHT, gain *
( balance - AUDIO_LEFT_BALANCE ) /
( AUDIO_MID_BALANCE - AUDIO_LEFT_BALANCE ) );
}
else
{
volume.setVolume( Volume::RIGHT, gain );
volume.setVolume( Volume::LEFT, gain *
( AUDIO_RIGHT_BALANCE - balance ) /
( AUDIO_RIGHT_BALANCE - AUDIO_MID_BALANCE ) );
}
}
}
TQString SUN_getDriverName() {
return "SUNAudio";
}