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authormickeyl <mickeyl>2005-01-24 18:56:14 (UTC)
committer mickeyl <mickeyl>2005-01-24 18:56:14 (UTC)
commitfa3041f9acfd171b62c0ab73cde8b9d0f0772a9c (patch) (side-by-side diff)
treec2ba9f2aaa744abaf4ac698eeeb27311dd81a50b /libopie2
parent176a421ade3f5baf07be9327cbdbfedea41fdd3c (diff)
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add isStereo to OMixerInterface to gather whether a given channel is a stereo or mono channel
Diffstat (limited to 'libopie2') (more/less context) (ignore whitespace changes)
-rw-r--r--libopie2/examples/opiemm/osoundsystemdemo/osoundsystemdemo.cpp3
-rw-r--r--libopie2/opiemm/osoundsystem.cpp25
-rw-r--r--libopie2/opiemm/osoundsystem.h6
3 files changed, 30 insertions, 4 deletions
diff --git a/libopie2/examples/opiemm/osoundsystemdemo/osoundsystemdemo.cpp b/libopie2/examples/opiemm/osoundsystemdemo/osoundsystemdemo.cpp
index b522441..f74a1b9 100644
--- a/libopie2/examples/opiemm/osoundsystemdemo/osoundsystemdemo.cpp
+++ b/libopie2/examples/opiemm/osoundsystemdemo/osoundsystemdemo.cpp
@@ -54,9 +54,10 @@ int main( int argc, char** argv )
QStringList channels = mixer->allChannels();
for ( QStringList::Iterator it = channels.begin(); it != channels.end(); ++it )
{
- odebug << "OSSDEMO: Mixer has channel " << *it << "" << oendl;
+ bool stereo = mixer->isStereo( *it );
+ odebug << "OSSDEMO: Mixer has channel " << *it << ( stereo ? "[stereo]" : "[mono]" ) << oendl;
odebug << "OSSDEMO: +--- volume " << ( mixer->volume( *it ) & 0xff )
<< " (left) | " << ( mixer->volume( *it ) >> 8 ) << " (right)" << oendl;
}
diff --git a/libopie2/opiemm/osoundsystem.cpp b/libopie2/opiemm/osoundsystem.cpp
index 13b26e6..09fd28f 100644
--- a/libopie2/opiemm/osoundsystem.cpp
+++ b/libopie2/opiemm/osoundsystem.cpp
@@ -193,9 +193,9 @@ void OMixerInterface::init()
// open the device
_fd = ::open( name(), O_RDWR );
if ( _fd == -1 )
{
- owarn << "OMixerInterface::init(): Can't open mixer." << oendl;
+ owarn << "OMixerInterface::init(): Can't open mixer " << name() << oendl;
return;
}
// construct the device capabilities
@@ -238,8 +238,14 @@ void OMixerInterface::init()
if ( devmask & ( 1 << SOUND_MIXER_OGAIN ) ) _channels.insert( "RecOutputGain", SOUND_MIXER_OGAIN );
//odebug << "recmask available and constructed." << oendl;
}
+ devmask = 0;
+ if ( ioctl( _fd, SOUND_MIXER_READ_STEREODEVS, &devmask ) != -1 )
+ {
+ odebug << "stereomask = " << devmask << oendl;
+ }
+
/* ChannelIterator it;
for ( it = _channels.begin(); it != _channels.end(); ++it )
{
odebug << "Channel " << it.key() << " available (bit " << it.data() << ")" << oendl;
@@ -274,14 +280,29 @@ QStringList OMixerInterface::playChannels() const
return QStringList();
}
-bool OMixerInterface::hasChannel( const QString& channel )
+bool OMixerInterface::hasChannel( const QString& channel ) const
{
return _channels.contains( channel );
}
+bool OMixerInterface::isStereo( const QString& channel ) const
+{
+ bool result = false;
+ if ( _channels.contains( channel ) )
+ {
+ int devmask = 0;
+ if ( ioctl( _fd, SOUND_MIXER_READ_STEREODEVS, &devmask ) != -1 )
+ {
+ result = devmask & ( 1 << _channels[channel] );
+ }
+ }
+ return result;
+}
+
+
void OMixerInterface::setVolume( const QString& channel, int left, int right )
{
int volume = left;
volume |= ( right == -1 ) ? left << 8 : right << 8;
diff --git a/libopie2/opiemm/osoundsystem.h b/libopie2/opiemm/osoundsystem.h
index bd69114..ac7a5a7 100644
--- a/libopie2/opiemm/osoundsystem.h
+++ b/libopie2/opiemm/osoundsystem.h
@@ -201,9 +201,13 @@ class OMixerInterface : public QObject
/**
* @returns true, if @a channel exists.
*/
- bool hasChannel( const QString& channel );
+ bool hasChannel( const QString& channel ) const;
+ /**
+ * @returns true, if @a channel is stereo.
+ */
+ bool isStereo( const QString& channel ) const;
/**
* Set the @a left and @a right volumes for @a channel.
* If no value for right is given, the value for left is taken for that.