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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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;
}
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