2025-09-17 Fred Gleason <fredg@paravelsystems.com>

* Added a 'librdalsa' convenience library in 'rdalsa/'. * Moved the 'RDAlsaCard' class from 'utils/rdalsaconfig/' to 'rdalsa/' to contain ALSA card quirk information. * Refactored the ALSA driver in caed(8) to use 'RDAlsaCard'. Signed-off-by: Fred Gleason <fredg@paravelsystems.com>
2025-12-01 22:30:13 +01:00 · 2025-09-17 17:17:09 -04:00
parent 1d608b5321
commit e5340cfce8
13 changed files with 218 additions and 64 deletions
--- a/rdalsa/rdalsacard.cpp
+++ b/rdalsa/rdalsacard.cpp
@@ -0,0 +1,169 @@
+// rdalsacard.cpp
+//
+// Abstract ALSA 'card' information
+//
+//   (C) Copyright 2019-2025 Fred Gleason <fredg@paravelsystems.com>
+//
+//   This program is free software; you can redistribute it and/or modify
+//   it under the terms of the GNU General Public License version 2 as
+//   published by the Free Software Foundation.
+//
+//   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 General Public License for more details.
+//
+//   You should have received a copy of the GNU General Public
+//   License along with this program; if not, write to the Free Software
+//   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+
+#include <QObject>
+
+#include <rdapplication.h>
+
+#include "rdalsacard.h"
+
+RDAlsaCard::RDAlsaCard(snd_ctl_t *ctl,int index)
+{
+  card_enabled=false;
+  card_index=index;
+
+  snd_ctl_card_info_t *card_info;
+
+  snd_ctl_card_info_malloc(&card_info);
+
+  snd_ctl_card_info(ctl,card_info);
+  card_id=QString(snd_ctl_card_info_get_id(card_info));
+  card_driver=QString(snd_ctl_card_info_get_driver(card_info));
+  card_name=QString(snd_ctl_card_info_get_name(card_info));
+  card_pretty_name=card_name;
+  card_long_name=QString(snd_ctl_card_info_get_longname(card_info));
+  card_pretty_long_name=card_long_name;
+  card_mixer_name=QString(snd_ctl_card_info_get_mixername(card_info));
+  card_pretty_mixer_name=card_mixer_name;
+  card_max_channels_per_pcm=rda->config()->alsaChannelsPerPcm();
+
+  //
+  // Apply Specific Device Quirks
+  //
+  if(card_name=="Loopback") {  // Fix the opaque name assigned by Wheatstone
+    card_pretty_name.replace("Loopback","WheatNet");
+    card_pretty_long_name.replace("Loopback","WheatNet");
+    card_pretty_mixer_name.replace("Loopback","WheatNet");
+    if(card_max_channels_per_pcm<0) {
+      card_max_channels_per_pcm=2;
+    }
+  }
+  snd_ctl_card_info_free(card_info);
+}
+
+
+RDAlsaCard::RDAlsaCard(const QString &id,int index)
+{
+  card_id=id;
+  card_index=index;
+
+  card_driver=QObject::tr("ALSA Driver");
+  card_name=card_id;
+  card_pretty_name=card_name;
+  card_long_name=QObject::tr("ALSA Device")+" "+card_id;
+  card_pretty_long_name=card_long_name;
+  card_mixer_name=QObject::tr("[none]");
+  card_pretty_mixer_name=card_mixer_name;
+  card_max_channels_per_pcm=rda->config()->alsaChannelsPerPcm();
+}
+
+
+int RDAlsaCard::index() const
+{
+  return card_index;
+}
+
+
+QString RDAlsaCard::id() const
+{
+  return card_id;
+}
+
+
+QString RDAlsaCard::driver() const
+{
+  return card_driver;
+}
+
+
+QString RDAlsaCard::name() const
+{
+  return card_name;
+}
+
+
+QString RDAlsaCard::prettyName() const
+{
+  return card_pretty_name;
+}
+
+
+QString RDAlsaCard::longName() const
+{
+  return card_long_name;
+}
+
+
+QString RDAlsaCard::prettyLongName() const
+{
+  return card_pretty_long_name;
+}
+
+
+QString RDAlsaCard::mixerName() const
+{
+  return card_long_name;
+}
+
+
+QString RDAlsaCard::prettyMixerName() const
+{
+  return card_pretty_mixer_name;
+}
+
+
+bool RDAlsaCard::isEnabled() const
+{
+  return card_enabled;
+}
+
+
+void RDAlsaCard::setEnabled(bool state)
+{
+  card_enabled=state;
+}
+
+
+int RDAlsaCard::maxChannelsPerPcm() const
+{
+  return card_max_channels_per_pcm;
+}
+
+
+QString RDAlsaCard::dump() const
+{
+  QString ret=QString::asprintf("Card %d\n",index());
+
+  ret+="  ID: "+id()+"\n";
+  ret+="  Name: "+name()+"\n";
+  ret+="  Pretty Name: "+prettyName()+"\n";
+  ret+="  Long Name: "+longName()+"\n";
+  ret+="  Pretty Long Name: "+prettyLongName()+"\n";
+  ret+="  Driver: "+driver()+"\n";
+  ret+="  Mixer Name: "+mixerName()+"\n";
+  ret+="  Pretty Mixer Name: "+prettyMixerName()+"\n";
+  if(maxChannelsPerPcm()<0) {
+    ret+="  Max Channels Per PCM: [default]\n";
+  }
+  else {
+    ret+=QString::asprintf("  Max Channels Per PCM: %d\n",maxChannelsPerPcm());
+  }
+  return ret;
+}