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// qsamplerChannel.cpp |
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// |
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/**************************************************************************** |
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Copyright (C) 2003-2005, rncbc aka Rui Nuno Capela. All rights reserved. |
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|
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This program is free software; you can redistribute it and/or |
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modify it under the terms of the GNU General Public License |
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as published by the Free Software Foundation; either version 2 |
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of the License, or (at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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|
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*****************************************************************************/ |
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|
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#include "qsamplerChannel.h" |
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|
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#include "qsamplerMainForm.h" |
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#include "qsamplerChannelForm.h" |
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|
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#include "config.h" |
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|
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#include <qfileinfo.h> |
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|
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#ifdef CONFIG_LIBGIG |
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#include "gig.h" |
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#endif |
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|
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#define QSAMPLER_INSTRUMENT_MAX 8 |
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|
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|
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//------------------------------------------------------------------------- |
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// qsamplerChannel - Sampler channel structure. |
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// |
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|
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// Constructor. |
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qsamplerChannel::qsamplerChannel ( qsamplerMainForm *pMainForm, int iChannelID ) |
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{ |
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m_pMainForm = pMainForm; |
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m_iChannelID = iChannelID; |
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|
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// m_sEngineName = noEngineName(); |
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// m_sInstrumentName = noInstrumentName(); |
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// m_sInstrumentFile = m_sInstrumentName; |
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m_iInstrumentNr = -1; |
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m_iInstrumentStatus = -1; |
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m_sMidiDriver = "Alsa"; // DEPRECATED. |
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m_iMidiDevice = -1; |
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m_iMidiPort = -1; |
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m_iMidiChannel = -1; |
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m_sAudioDriver = "Alsa"; // DEPRECATED. |
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m_iAudioDevice = -1; |
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m_fVolume = 0.0; |
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|
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} |
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|
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// Default destructor. |
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qsamplerChannel::~qsamplerChannel (void) |
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{ |
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} |
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|
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|
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// The global options settings delegated property. |
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qsamplerOptions *qsamplerChannel::options (void) |
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{ |
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if (m_pMainForm == NULL) |
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return NULL; |
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|
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return m_pMainForm->options(); |
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} |
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|
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|
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// The client descriptor delegated property. |
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lscp_client_t *qsamplerChannel::client (void) |
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{ |
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if (m_pMainForm == NULL) |
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return NULL; |
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|
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return m_pMainForm->client(); |
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} |
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|
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|
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// Create a new sampler channel, if not already. |
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bool qsamplerChannel::addChannel (void) |
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{ |
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if (client() == NULL) |
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return false; |
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|
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// Are we a new channel? |
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if (m_iChannelID < 0) { |
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m_iChannelID = ::lscp_add_channel(client()); |
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if (m_iChannelID < 0) { |
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appendMessagesClient("lscp_add_channel"); |
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appendMessagesError(QObject::tr("Could not create the new channel.\n\nSorry.")); |
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} // Otherwise it's created... |
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else appendMessages(QObject::tr("Channel %1 created.").arg(m_iChannelID)); |
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} |
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|
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// Return whether we're a valid channel... |
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return (m_iChannelID >= 0); |
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} |
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|
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|
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// Remove sampler channel. |
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bool qsamplerChannel::removeChannel (void) |
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{ |
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if (client() == NULL) |
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return false; |
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|
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// Are we an existing channel? |
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if (m_iChannelID >= 0) { |
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if (::lscp_remove_channel(client(), m_iChannelID) != LSCP_OK) { |
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appendMessagesClient("lscp_remove_channel"); |
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appendMessagesError(QObject::tr("Could not remove channel.\n\nSorry.")); |
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} else { |
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// Otherwise it's removed. |
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appendMessages(QObject::tr("Channel %1 removed.").arg(m_iChannelID)); |
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m_iChannelID = -1; |
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} |
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} |
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|
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// Return whether we've removed the channel... |
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return (m_iChannelID < 0); |
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} |
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|
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|
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// Channel-ID (aka Sammpler-Channel) accessors. |
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int qsamplerChannel::channelID (void) |
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{ |
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return m_iChannelID; |
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} |
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|
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void qsamplerChannel::setChannelID ( int iChannelID ) |
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{ |
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m_iChannelID = iChannelID; |
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} |
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|
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|
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// Readable channel name. |
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QString qsamplerChannel::channelName (void) |
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{ |
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return (m_iChannelID < 0 ? QObject::tr("New Channel") : QObject::tr("Channel %1").arg(m_iChannelID)); |
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} |
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|
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|
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// Engine name accessors. |
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QString& qsamplerChannel::engineName (void) |
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{ |
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return m_sEngineName; |
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} |
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|
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bool qsamplerChannel::loadEngine ( const QString& sEngineName ) |
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{ |
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if (client() == NULL || m_iChannelID < 0) |
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return false; |
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if (m_iInstrumentStatus == 100 && m_sEngineName == sEngineName) |
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return true; |
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|
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if (::lscp_load_engine(client(), sEngineName.latin1(), m_iChannelID) != LSCP_OK) { |
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appendMessagesClient("lscp_load_engine"); |
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return false; |
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} |
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|
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m_sEngineName = sEngineName; |
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return true; |
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} |
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|
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|
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// Instrument filename accessor. |
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QString& qsamplerChannel::instrumentFile (void) |
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{ |
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return m_sInstrumentFile; |
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} |
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|
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// Instrument index accessor. |
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int qsamplerChannel::instrumentNr (void) |
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{ |
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return m_iInstrumentNr; |
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} |
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|
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// Instrument name accessor. |
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QString& qsamplerChannel::instrumentName (void) |
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{ |
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return m_sInstrumentName; |
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} |
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|
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// Instrument status accessor. |
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int qsamplerChannel::instrumentStatus (void) |
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{ |
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return m_iInstrumentStatus; |
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} |
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|
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// Instrument file loader. |
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bool qsamplerChannel::loadInstrument ( const QString& sInstrumentFile, int iInstrumentNr ) |
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{ |
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if (client() == NULL || m_iChannelID < 0) |
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return false; |
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if (!isInstrumentFile(sInstrumentFile)) |
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return false; |
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if (m_iInstrumentStatus == 100 && m_sInstrumentFile == sInstrumentFile && m_iInstrumentNr == iInstrumentNr) |
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return true; |
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|
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if (::lscp_load_instrument_non_modal(client(), sInstrumentFile.latin1(), iInstrumentNr, m_iChannelID) != LSCP_OK) { |
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appendMessagesClient("lscp_load_instrument"); |
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return false; |
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} |
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|
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return setInstrument(sInstrumentFile, iInstrumentNr); |
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} |
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|
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|
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// Special instrument file/name/number settler. |
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bool qsamplerChannel::setInstrument ( const QString& sInstrumentFile, int iInstrumentNr ) |
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{ |
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m_sInstrumentFile = sInstrumentFile; |
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m_iInstrumentNr = iInstrumentNr; |
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#ifdef CONFIG_INSTRUMENT_NAME |
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m_sInstrumentName = QString::null; // We'll get it, maybe later, on channel_info... |
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#else |
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m_sInstrumentName = getInstrumentName(sInstrumentFile, iInstrumentNr, true); |
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#endif |
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m_iInstrumentStatus = 0; |
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|
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return true; |
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} |
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|
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|
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// MIDI driver type accessors (DEPRECATED). |
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QString& qsamplerChannel::midiDriver (void) |
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{ |
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return m_sMidiDriver; |
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} |
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|
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bool qsamplerChannel::setMidiDriver ( const QString& sMidiDriver ) |
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{ |
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if (client() == NULL || m_iChannelID < 0) |
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return false; |
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if (m_iInstrumentStatus == 100 && m_sMidiDriver == sMidiDriver) |
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return true; |
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|
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if (::lscp_set_channel_midi_type(client(), m_iChannelID, sMidiDriver.latin1()) != LSCP_OK) { |
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appendMessagesClient("lscp_set_channel_midi_type"); |
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return false; |
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} |
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|
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m_sMidiDriver = sMidiDriver; |
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return true; |
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} |
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|
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|
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// MIDI device accessors. |
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int qsamplerChannel::midiDevice (void) |
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{ |
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return m_iMidiDevice; |
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} |
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|
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bool qsamplerChannel::setMidiDevice ( int iMidiDevice ) |
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{ |
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if (client() == NULL || m_iChannelID < 0) |
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return false; |
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if (m_iInstrumentStatus == 100 && m_iMidiDevice == iMidiDevice) |
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return true; |
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|
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if (::lscp_set_channel_midi_device(client(), m_iChannelID, iMidiDevice) != LSCP_OK) { |
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appendMessagesClient("lscp_set_channel_midi_device"); |
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return false; |
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} |
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|
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m_iMidiDevice = iMidiDevice; |
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return true; |
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} |
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|
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|
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// MIDI port number accessor. |
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int qsamplerChannel::midiPort (void) |
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{ |
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return m_iMidiPort; |
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} |
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|
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bool qsamplerChannel::setMidiPort ( int iMidiPort ) |
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{ |
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if (client() == NULL || m_iChannelID < 0) |
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return false; |
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if (m_iInstrumentStatus == 100 && m_iMidiPort == iMidiPort) |
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return true; |
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|
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if (::lscp_set_channel_midi_port(client(), m_iChannelID, iMidiPort) != LSCP_OK) { |
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appendMessagesClient("lscp_set_channel_midi_port"); |
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return false; |
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} |
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|
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m_iMidiPort = iMidiPort; |
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return true; |
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} |
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|
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|
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// MIDI channel accessor. |
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int qsamplerChannel::midiChannel (void) |
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{ |
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return m_iMidiChannel; |
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} |
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|
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bool qsamplerChannel::setMidiChannel ( int iMidiChannel ) |
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{ |
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if (client() == NULL || m_iChannelID < 0) |
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return false; |
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if (m_iInstrumentStatus == 100 && m_iMidiChannel == iMidiChannel) |
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return true; |
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|
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if (::lscp_set_channel_midi_channel(client(), m_iChannelID, iMidiChannel) != LSCP_OK) { |
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appendMessagesClient("lscp_set_channel_midi_channel"); |
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return false; |
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} |
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|
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m_iMidiChannel = iMidiChannel; |
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return true; |
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} |
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|
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|
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// Audio device accessor. |
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int qsamplerChannel::audioDevice (void) |
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{ |
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return m_iAudioDevice; |
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} |
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|
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bool qsamplerChannel::setAudioDevice ( int iAudioDevice ) |
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{ |
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if (client() == NULL || m_iChannelID < 0) |
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return false; |
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if (m_iInstrumentStatus == 100 && m_iAudioDevice == iAudioDevice) |
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return true; |
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|
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if (::lscp_set_channel_audio_device(client(), m_iChannelID, iAudioDevice) != LSCP_OK) { |
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appendMessagesClient("lscp_set_channel_audio_device"); |
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return false; |
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} |
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|
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m_iAudioDevice = iAudioDevice; |
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return true; |
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} |
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|
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|
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// Audio driver type accessors (DEPRECATED). |
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QString& qsamplerChannel::audioDriver (void) |
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{ |
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return m_sAudioDriver; |
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} |
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|
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bool qsamplerChannel::setAudioDriver ( const QString& sAudioDriver ) |
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{ |
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if (client() == NULL || m_iChannelID < 0) |
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return false; |
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if (m_iInstrumentStatus == 100 && m_sAudioDriver == sAudioDriver) |
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return true; |
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|
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if (::lscp_set_channel_audio_type(client(), m_iChannelID, sAudioDriver.latin1()) != LSCP_OK) { |
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appendMessagesClient("lscp_set_channel_audio_type"); |
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return false; |
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} |
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|
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m_sAudioDriver = sAudioDriver; |
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return true; |
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} |
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|
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|
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// Channel volume accessors. |
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float qsamplerChannel::volume (void) |
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{ |
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return m_fVolume; |
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} |
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|
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bool qsamplerChannel::setVolume ( float fVolume ) |
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{ |
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if (client() == NULL || m_iChannelID < 0) |
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return false; |
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if (m_iInstrumentStatus == 100 && m_fVolume == fVolume) |
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return true; |
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|
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if (::lscp_set_channel_volume(client(), m_iChannelID, fVolume) != LSCP_OK) { |
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appendMessagesClient("lscp_set_channel_volume"); |
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return false; |
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} |
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|
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m_fVolume = fVolume; |
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return true; |
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} |
393 |
|
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|
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// Istrument name remapper. |
396 |
void qsamplerChannel::updateInstrumentName (void) |
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{ |
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#ifndef CONFIG_INSTRUMENT_NAME |
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m_sInstrumentName = getInstrumentName(m_sInstrumentFile, |
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m_iInstrumentNr, (options() && options()->bInstrumentNames)); |
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#endif |
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} |
403 |
|
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|
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// Update whole channel info state. |
406 |
bool qsamplerChannel::updateChannelInfo (void) |
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{ |
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if (client() == NULL || m_iChannelID < 0) |
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return false; |
410 |
|
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// Read channel information. |
412 |
lscp_channel_info_t *pChannelInfo = ::lscp_get_channel_info(client(), m_iChannelID); |
413 |
if (pChannelInfo == NULL) { |
414 |
appendMessagesClient("lscp_get_channel_info"); |
415 |
appendMessagesError(QObject::tr("Could not get channel information.\n\nSorry.")); |
416 |
return false; |
417 |
} |
418 |
|
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#ifdef CONFIG_INSTRUMENT_NAME |
420 |
// We got all actual instrument datum... |
421 |
m_sInstrumentFile = pChannelInfo->instrument_file; |
422 |
m_iInstrumentNr = pChannelInfo->instrument_nr; |
423 |
m_sInstrumentName = pChannelInfo->instrument_name; |
424 |
#else |
425 |
// First, check if intrument name has changed, |
426 |
// taking care that instrument name lookup might be expensive, |
427 |
// so we better make it only once and when really needed... |
428 |
if ((m_sInstrumentFile != pChannelInfo->instrument_file) || |
429 |
(m_iInstrumentNr != pChannelInfo->instrument_nr)) { |
430 |
m_sInstrumentFile = pChannelInfo->instrument_file; |
431 |
m_iInstrumentNr = pChannelInfo->instrument_nr; |
432 |
updateInstrumentName(); |
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} |
434 |
#endif |
435 |
// Cache in other channel information. |
436 |
m_sEngineName = pChannelInfo->engine_name; |
437 |
m_iInstrumentStatus = pChannelInfo->instrument_status; |
438 |
m_iMidiDevice = pChannelInfo->midi_device; |
439 |
m_iMidiPort = pChannelInfo->midi_port; |
440 |
m_iMidiChannel = pChannelInfo->midi_channel; |
441 |
m_iAudioDevice = pChannelInfo->audio_device; |
442 |
m_fVolume = pChannelInfo->volume; |
443 |
// Some sanity checks. |
444 |
if (m_sEngineName == "NONE") |
445 |
m_sEngineName = QString::null; |
446 |
if (m_sInstrumentFile == "NONE") { |
447 |
m_sInstrumentFile = QString::null; |
448 |
m_sInstrumentName = QString::null; |
449 |
} |
450 |
|
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return true; |
452 |
} |
453 |
|
454 |
|
455 |
// Reset channel method. |
456 |
bool qsamplerChannel::channelReset (void) |
457 |
{ |
458 |
if (client() == NULL || m_iChannelID < 0) |
459 |
return false; |
460 |
|
461 |
if (::lscp_reset_channel(client(), m_iChannelID) != LSCP_OK) { |
462 |
appendMessagesClient("lscp_reset_channel"); |
463 |
return false; |
464 |
} |
465 |
|
466 |
appendMessages(QObject::tr("Channel %1 reset.").arg(m_iChannelID)); |
467 |
return true; |
468 |
} |
469 |
|
470 |
|
471 |
// Channel setup dialog form. |
472 |
bool qsamplerChannel::channelSetup ( QWidget *pParent ) |
473 |
{ |
474 |
bool bResult = false; |
475 |
|
476 |
qsamplerChannelForm *pChannelForm = new qsamplerChannelForm(pParent); |
477 |
if (pChannelForm) { |
478 |
pChannelForm->setup(this); |
479 |
bResult = pChannelForm->exec(); |
480 |
delete pChannelForm; |
481 |
} |
482 |
|
483 |
return bResult; |
484 |
} |
485 |
|
486 |
|
487 |
// Redirected messages output methods. |
488 |
void qsamplerChannel::appendMessages( const QString& s ) |
489 |
{ |
490 |
if (m_pMainForm) m_pMainForm->appendMessages(s); |
491 |
} |
492 |
|
493 |
void qsamplerChannel::appendMessagesColor( const QString& s, const QString& c ) |
494 |
{ |
495 |
if (m_pMainForm) m_pMainForm->appendMessagesColor(s, c); |
496 |
} |
497 |
|
498 |
void qsamplerChannel::appendMessagesText( const QString& s ) |
499 |
{ |
500 |
if (m_pMainForm) m_pMainForm->appendMessagesText(s); |
501 |
} |
502 |
|
503 |
void qsamplerChannel::appendMessagesError( const QString& s ) |
504 |
{ |
505 |
if (m_pMainForm) m_pMainForm->appendMessagesError(s); |
506 |
} |
507 |
|
508 |
void qsamplerChannel::appendMessagesClient( const QString& s ) |
509 |
{ |
510 |
if (m_pMainForm) m_pMainForm->appendMessagesClient(s); |
511 |
} |
512 |
|
513 |
|
514 |
// Context menu event handler. |
515 |
void qsamplerChannel::contextMenuEvent( QContextMenuEvent *pEvent ) |
516 |
{ |
517 |
if (m_pMainForm) m_pMainForm->contextMenuEvent(pEvent); |
518 |
} |
519 |
|
520 |
|
521 |
// FIXME: Check whether a given file is an instrument file. |
522 |
bool qsamplerChannel::isInstrumentFile ( const QString& sInstrumentFile ) |
523 |
{ |
524 |
bool bResult = false; |
525 |
|
526 |
QFile file(sInstrumentFile); |
527 |
if (file.open(IO_ReadOnly)) { |
528 |
char achHeader[4]; |
529 |
if (file.readBlock(achHeader, 4)) { |
530 |
bResult = (achHeader[0] == 'R' |
531 |
&& achHeader[1] == 'I' |
532 |
&& achHeader[2] == 'F' |
533 |
&& achHeader[3] == 'F'); |
534 |
} |
535 |
file.close(); |
536 |
} |
537 |
|
538 |
return bResult; |
539 |
} |
540 |
|
541 |
|
542 |
// Retrieve the instrument list of a instrument file (.gig). |
543 |
QStringList qsamplerChannel::getInstrumentList( const QString& sInstrumentFile, |
544 |
bool bInstrumentNames ) |
545 |
{ |
546 |
QString sInstrumentName = QFileInfo(sInstrumentFile).fileName(); |
547 |
QStringList instlist; |
548 |
|
549 |
if (isInstrumentFile(sInstrumentFile)) { |
550 |
#ifdef CONFIG_LIBGIG |
551 |
if (bInstrumentNames) { |
552 |
RIFF::File *pRiff = new RIFF::File(sInstrumentFile); |
553 |
gig::File *pGig = new gig::File(pRiff); |
554 |
gig::Instrument *pInstrument = pGig->GetFirstInstrument(); |
555 |
while (pInstrument) { |
556 |
instlist.append((pInstrument->pInfo)->Name.c_str()); |
557 |
pInstrument = pGig->GetNextInstrument(); |
558 |
} |
559 |
delete pGig; |
560 |
delete pRiff; |
561 |
} |
562 |
else |
563 |
#endif |
564 |
for (int iInstrumentNr = 0; iInstrumentNr < QSAMPLER_INSTRUMENT_MAX; iInstrumentNr++) |
565 |
instlist.append(sInstrumentName + " [" + QString::number(iInstrumentNr) + "]"); |
566 |
} |
567 |
else instlist.append(noInstrumentName()); |
568 |
|
569 |
return instlist; |
570 |
} |
571 |
|
572 |
|
573 |
// Retrieve the spacific instrument name of a instrument file (.gig), given its index. |
574 |
QString qsamplerChannel::getInstrumentName( const QString& sInstrumentFile, |
575 |
int iInstrumentNr, bool bInstrumentNames ) |
576 |
{ |
577 |
QString sInstrumentName; |
578 |
|
579 |
if (isInstrumentFile(sInstrumentFile)) { |
580 |
sInstrumentName = QFileInfo(sInstrumentFile).fileName(); |
581 |
#ifdef CONFIG_LIBGIG |
582 |
if (bInstrumentNames) { |
583 |
RIFF::File *pRiff = new RIFF::File(sInstrumentFile); |
584 |
gig::File *pGig = new gig::File(pRiff); |
585 |
int iIndex = 0; |
586 |
gig::Instrument *pInstrument = pGig->GetFirstInstrument(); |
587 |
while (pInstrument) { |
588 |
if (iIndex == iInstrumentNr) { |
589 |
sInstrumentName = (pInstrument->pInfo)->Name.c_str(); |
590 |
break; |
591 |
} |
592 |
iIndex++; |
593 |
pInstrument = pGig->GetNextInstrument(); |
594 |
} |
595 |
delete pGig; |
596 |
delete pRiff; |
597 |
} |
598 |
else |
599 |
#endif |
600 |
sInstrumentName += " [" + QString::number(iInstrumentNr) + "]"; |
601 |
} |
602 |
else sInstrumentName = noInstrumentName(); |
603 |
|
604 |
return sInstrumentName; |
605 |
} |
606 |
|
607 |
|
608 |
// Common invalid name-helpers. |
609 |
QString qsamplerChannel::noEngineName (void) |
610 |
{ |
611 |
return QObject::tr("(No engine)"); |
612 |
} |
613 |
|
614 |
QString qsamplerChannel::noInstrumentName (void) |
615 |
{ |
616 |
return QObject::tr("(No instrument)"); |
617 |
} |
618 |
|
619 |
|
620 |
// end of qsamplerChannel.cpp |