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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commite2de64d6f1beb9e492daf5b886e19933c1fa41dd (patch)
tree9047cf9e6b5c43878d5bf82660adae77ceee097a /kmix/mixer_backend.cpp
downloadtdemultimedia-e2de64d6f1beb9e492daf5b886e19933c1fa41dd.tar.gz
tdemultimedia-e2de64d6f1beb9e492daf5b886e19933c1fa41dd.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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diff --git a/kmix/mixer_backend.cpp b/kmix/mixer_backend.cpp
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+/*
+ * KMix -- KDE's full featured mini mixer
+ *
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <klocale.h>
+
+#include "mixer_backend.h"
+// for the "ERR_" declartions, #include mixer.h
+#include "mixer.h"
+
+Mixer_Backend::Mixer_Backend(int device) :
+ m_devnum (device) , m_isOpen(false), m_recommendedMaster(0)
+{
+ m_mixDevices.setAutoDelete( true );
+}
+
+Mixer_Backend::~Mixer_Backend()
+{
+}
+
+
+bool Mixer_Backend::isValid() {
+ bool valid = false;
+ int ret = open();
+ if ( ret == 0 && m_mixDevices.count() > 0) {
+ valid = true;
+ }
+ close();
+ return valid;
+}
+
+bool Mixer_Backend::isOpen() {
+ return m_isOpen;
+}
+
+/**
+ * Queries the backend driver whether there are new changes in any of the controls.
+ * If you cannot find out for a backend, return "true" - this is also the default implementation.
+ * @return true, if there are changes. Otherwise false is returned.
+ */
+bool Mixer_Backend::prepareUpdateFromHW() {
+ return true;
+}
+
+/**
+ * Return the MixDevice, that would qualify best as MasterDevice. The default is to return the
+ * first device in the device list. Backends can override this (i.e. the ALSA Backend does so).
+ * The users preference is NOT returned by this method - see the Mixer class for that.
+ */
+MixDevice* Mixer_Backend::recommendedMaster() {
+ MixDevice* recommendedMixDevice = 0;
+ if ( m_recommendedMaster != 0 ) {
+ recommendedMixDevice = m_recommendedMaster;
+ } // recommendation from Backend
+ else {
+ if ( m_mixDevices.count() > 0 ) {
+ recommendedMixDevice = m_mixDevices.at(0);
+ } //first device (if exists)
+ }
+ return recommendedMixDevice;
+}
+
+/**
+ * Sets the ID of the currently selected Enum entry.
+ * This is a dummy implementation - if the Mixer backend
+ * wants to support it, it must implement the driver specific
+ * code in its subclass (see Mixer_ALSA.cpp for an example).
+ */
+void Mixer_Backend::setEnumIdHW(int, unsigned int) {
+ return;
+}
+
+/**
+ * Return the ID of the currently selected Enum entry.
+ * This is a dummy implementation - if the Mixer backend
+ * wants to support it, it must implement the driver specific
+ * code in its subclass (see Mixer_ALSA.cpp for an example).
+ */
+unsigned int Mixer_Backend::enumIdHW(int) {
+ return 0;
+}
+
+void Mixer_Backend::errormsg(int mixer_error)
+{
+ QString l_s_errText;
+ l_s_errText = errorText(mixer_error);
+ kdError() << l_s_errText << "\n";
+}
+
+QString Mixer_Backend::errorText(int mixer_error)
+{
+ QString l_s_errmsg;
+ switch (mixer_error)
+ {
+ case Mixer::ERR_PERM:
+ l_s_errmsg = i18n("kmix:You do not have permission to access the mixer device.\n" \
+ "Please check your operating systems manual to allow the access.");
+ break;
+ case Mixer::ERR_WRITE:
+ l_s_errmsg = i18n("kmix: Could not write to mixer.");
+ break;
+ case Mixer::ERR_READ:
+ l_s_errmsg = i18n("kmix: Could not read from mixer.");
+ break;
+ case Mixer::ERR_NODEV:
+ l_s_errmsg = i18n("kmix: Your mixer does not control any devices.");
+ break;
+ case Mixer::ERR_NOTSUPP:
+ l_s_errmsg = i18n("kmix: Mixer does not support your platform. See mixer.cpp for porting hints (PORTING).");
+ break;
+ case Mixer::ERR_NOMEM:
+ l_s_errmsg = i18n("kmix: Not enough memory.");
+ break;
+ case Mixer::ERR_OPEN:
+ case Mixer::ERR_MIXEROPEN:
+ // ERR_MIXEROPEN means: Soundcard could be opened, but has no mixer. ERR_MIXEROPEN is normally never
+ // passed to the errorText() method, because KMix handles that case explicitely
+ l_s_errmsg = i18n("kmix: Mixer cannot be found.\n" \
+ "Please check that the soundcard is installed and that\n" \
+ "the soundcard driver is loaded.\n");
+ break;
+ case Mixer::ERR_INCOMPATIBLESET:
+ l_s_errmsg = i18n("kmix: Initial set is incompatible.\n" \
+ "Using a default set.\n");
+ break;
+ default:
+ l_s_errmsg = i18n("kmix: Unknown error. Please report how you produced this error.");
+ break;
+ }
+ return l_s_errmsg;
+}
+