Added abandoned KDE3 version of K3B

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/k3b@1084400 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 293 insertions, 0 deletions

diff --git a/plugins/audiooutput/alsa/k3balsaoutputplugin.cpp b/plugins/audiooutput/alsa/k3balsaoutputplugin.cpp
new file mode 100644
index 0000000..7351ffc
--- /dev/null
+++ b/plugins/audiooutput/alsa/k3balsaoutputplugin.cpp
@@ -0,0 +1,293 @@
+/* 
+ *
+ * $Id: k3bartsoutputplugin.cpp 369057 2004-12-07 14:05:11Z trueg $
+ * Copyright (C) 2004 Sebastian Trueg <[email protected]>
+ *
+ * This file is part of the K3b project.
+ * Copyright (C) 1998-2007 Sebastian Trueg <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * See the file "COPYING" for the exact licensing terms.
+ */
+
+#include <config.h>
+
+#include "k3balsaoutputplugin.h"
+#include <k3bpluginfactory.h>
+#include <k3bcore.h>
+
+#include <kdebug.h>
+#include <kcombobox.h>
+#include <klocale.h>
+#include <kconfig.h>
+#include <kdialog.h>
+
+#include <qlayout.h>
+#include <qlabel.h>
+
+#include <alsa/asoundlib.h>
+#include <alsa/pcm.h>
+
+
+K_EXPORT_COMPONENT_FACTORY( libk3balsaoutputplugin, K3bPluginFactory<K3bAlsaOutputPlugin>( "k3balsaoutputplugin" ) )
+
+
+class K3bAlsaOutputPlugin::Private
+{
+public:
+  Private()
+    : pcm_playback(0),
+      error(false) {
+  }
+
+  snd_pcm_t *pcm_playback;
+
+  bool error;  
+  QString lastErrorMessage;
+
+  bool swap;
+
+  unsigned int sampleRate;
+};
+
+
+K3bAlsaOutputPlugin::K3bAlsaOutputPlugin( QObject* parent, const char* name )
+  : K3bAudioOutputPlugin( parent, name )
+{
+  d = new Private;
+}
+
+
+K3bAlsaOutputPlugin::~K3bAlsaOutputPlugin()
+{
+  cleanup();
+
+  delete d;
+}
+
+
+int K3bAlsaOutputPlugin::write( char* data, int len )
+{
+  if( d->error )
+    return -1;
+
+  char* buffer = data;
+  if( d->swap ) {
+    buffer = new char[len];
+    for( int i = 0; i < len-1; i+=2 ) {
+      buffer[i] = data[i+1];
+      buffer[i+1] = data[i];
+    }
+  }
+
+  int written = 0;
+  while( written < len ) {
+    snd_pcm_sframes_t frames = snd_pcm_writei( d->pcm_playback, 
+					       buffer+written, 
+					       snd_pcm_bytes_to_frames( d->pcm_playback, len-written ) );
+
+    if( frames < 0 ) {
+      if( !recoverFromError( frames ) ) {
+	d->error = true;
+	return -1;
+      }
+    }
+    else {
+      written += snd_pcm_frames_to_bytes( d->pcm_playback, frames );
+    }
+  }
+
+  return written;
+}
+
+
+bool K3bAlsaOutputPlugin::recoverFromError( int err )
+{
+  if( err == -EPIPE ) {
+    err = snd_pcm_prepare( d->pcm_playback );
+    if( err < 0 ) {
+      d->lastErrorMessage = i18n("Internal Alsa problem: %1").arg(snd_strerror(err));
+      return false;
+    }
+  }
+  else if( err == -ESTRPIPE ) {
+    while( ( err = snd_pcm_resume( d->pcm_playback ) ) == -EAGAIN )
+      sleep( 1 );
+
+    if (err < 0) {
+      // unable to wake up pcm device, restart it
+      err = snd_pcm_prepare( d->pcm_playback );
+      if( err < 0 ) {
+	d->lastErrorMessage = i18n("Internal Alsa problem: %1").arg(snd_strerror(err));
+	return false;
+      }
+    }
+
+    return true;
+  }
+
+  return false;
+}
+
+
+void K3bAlsaOutputPlugin::cleanup()
+{
+  if( d->pcm_playback ) {
+    snd_pcm_drain( d->pcm_playback );
+    snd_pcm_close( d->pcm_playback );
+  }
+  d->pcm_playback = 0;
+  d->error = false;
+}
+
+
+bool K3bAlsaOutputPlugin::init()
+{
+  cleanup();
+
+  KConfigGroup c( k3bcore->config(), "Alsa Output Plugin" );
+  QString alsaDevice = c.readEntry( "output device", "default" );
+
+  int err = snd_pcm_open( &d->pcm_playback, alsaDevice.local8Bit(), SND_PCM_STREAM_PLAYBACK, 0 );
+  if( err < 0 ) {
+    d->lastErrorMessage = i18n("Could not open alsa audio device '%1' (%2).").arg(alsaDevice).arg(snd_strerror(err));
+    d->error = true;
+    return false;
+  }
+
+  if( !setupHwParams() ) {
+    d->error = true;
+    return false;
+  }  
+
+  d->error = false;
+  return true;
+}
+
+
+bool K3bAlsaOutputPlugin::setupHwParams()
+{
+  snd_pcm_hw_params_t* hw_params;
+  int err = 0;
+
+  if( ( err = snd_pcm_hw_params_malloc( &hw_params ) ) < 0 ) {
+    d->lastErrorMessage = i18n("Could not allocate hardware parameter structure (%1)").arg(snd_strerror(err));
+    d->error = true;
+    return false;
+  }
+                                 
+  if( (err = snd_pcm_hw_params_any( d->pcm_playback, hw_params )) < 0) {
+    d->lastErrorMessage = i18n("Could not initialize hardware parameter structure (%1).").arg(snd_strerror(err));
+    snd_pcm_hw_params_free( hw_params );
+    d->error = true;
+    return false;
+  }
+        
+  if( (err = snd_pcm_hw_params_set_access( d->pcm_playback, hw_params, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0) {
+    d->lastErrorMessage = i18n("Could not set access type (%1).").arg(snd_strerror(err));
+    snd_pcm_hw_params_free( hw_params );
+    d->error = true;
+    return false;
+  }
+
+  if( (err = snd_pcm_hw_params_set_format( d->pcm_playback, hw_params, SND_PCM_FORMAT_S16_BE)) < 0) {
+    if( (err = snd_pcm_hw_params_set_format( d->pcm_playback, hw_params, SND_PCM_FORMAT_S16_LE)) < 0) {
+      d->lastErrorMessage = i18n("Could not set sample format (%1).").arg(snd_strerror(err));
+      snd_pcm_hw_params_free( hw_params );
+      d->error = true;
+      return false;
+    }
+    else
+      d->swap = true;
+  }
+  else
+    d->swap = false;
+
+  d->sampleRate = 44100;
+  if( (err = snd_pcm_hw_params_set_rate_near( d->pcm_playback, hw_params, &d->sampleRate, 0)) < 0) {
+    d->lastErrorMessage = i18n("Could not set sample rate (%1).").arg(snd_strerror(err));
+    snd_pcm_hw_params_free( hw_params );
+    d->error = true;
+    return false;
+  }
+
+  kdDebug() << "(K3bAlsaOutputPlugin) samplerate set to " << d->sampleRate << endl;
+
+  if( (err = snd_pcm_hw_params_set_channels( d->pcm_playback, hw_params, 2)) < 0) {
+    d->lastErrorMessage = i18n("Could not set channel count (%1).").arg(snd_strerror(err));
+    snd_pcm_hw_params_free( hw_params );
+    d->error = true;
+    return false;
+  }
+
+  if( (err = snd_pcm_hw_params( d->pcm_playback, hw_params )) < 0) {
+    d->lastErrorMessage = i18n("Could not set parameters (%1).").arg(snd_strerror(err));
+    snd_pcm_hw_params_free( hw_params );
+    d->error = true;
+    return false;
+  }
+        
+  snd_pcm_hw_params_free(hw_params);
+
+  return true;
+}
+
+
+QString K3bAlsaOutputPlugin::lastErrorMessage() const
+{
+  return d->lastErrorMessage;
+}
+
+
+K3bPluginConfigWidget* K3bAlsaOutputPlugin::createConfigWidget( QWidget* parent, 
+								const char* name ) const
+{
+  return new K3bAlsaOutputPluginConfigWidget( parent, name );
+}
+
+
+
+K3bAlsaOutputPluginConfigWidget::K3bAlsaOutputPluginConfigWidget( QWidget* parent, const char* name )
+  : K3bPluginConfigWidget( parent, name )
+{
+  QHBoxLayout* l = new QHBoxLayout( this );
+  l->setSpacing( KDialog::spacingHint() );
+  l->setAutoAdd( true );
+
+  (void)new QLabel( i18n("Alsa device:"), this );
+
+  m_comboDevice = new KComboBox( this );
+  m_comboDevice->setEditable( true );
+  // enable completion
+  m_comboDevice->completionObject();
+
+  // FIXME: initialize the list of devices
+  m_comboDevice->insertItem( "default" );
+}
+
+
+K3bAlsaOutputPluginConfigWidget::~K3bAlsaOutputPluginConfigWidget()
+{
+}
+
+
+void K3bAlsaOutputPluginConfigWidget::loadConfig()
+{
+  KConfigGroup c( k3bcore->config(), "Alsa Output Plugin" );
+
+  m_comboDevice->setCurrentText( c.readEntry( "output device", "default" ) );
+}
+
+
+void K3bAlsaOutputPluginConfigWidget::saveConfig()
+{
+  KConfigGroup c( k3bcore->config(), "Alsa Output Plugin" );
+
+  c.writeEntry( "output device", m_comboDevice->currentText() );
+}
+
+
+#include "k3balsaoutputplugin.moc"