InstrumentLayer.cpp

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/*
 * Hydrogen
 * Copyright(c) 2002-2008 by Alex >Comix< Cominu [comix@users.sourceforge.net]
 * Copyright(c) 2008-2025 The hydrogen development team [hydrogen-devel@lists.sourceforge.net]
 *
 * http://www.hydrogen-music.org
 *
 * 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.
 *
 * 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, see https://www.gnu.org/licenses
 *
 */
 
#include <core/Basics/InstrumentLayer.h>
#include <core/Basics/Instrument.h>
#include <core/Basics/Sample.h>
 
#include <core/Helpers/Filesystem.h>
#include <core/Helpers/Xml.h>
#include <core/License.h>
#include <core/Hydrogen.h>
#include <core/NsmClient.h>
#include <core/Preferences/Preferences.h>
 
namespace H2Core
{
 
InstrumentLayer::InstrumentLayer( std::shared_ptr<Sample> sample ) :
        __start_velocity( 0.0 ),
        __end_velocity( 1.0 ),
        __pitch( 0.0 ),
        __gain( 1.0 ),
        __sample( sample )
{
}
 
InstrumentLayer::InstrumentLayer( std::shared_ptr<InstrumentLayer> other ) : Object( *other ),
        __start_velocity( other->get_start_velocity() ),
        __end_velocity( other->get_end_velocity() ),
        __pitch( other->get_pitch() ),
        __gain( other->get_gain() ),
        __sample( other->get_sample() )
{
}
 
InstrumentLayer::InstrumentLayer( std::shared_ptr<InstrumentLayer> other, std::shared_ptr<Sample> sample ) : Object( *other ),
        __start_velocity( other->get_start_velocity() ),
        __end_velocity( other->get_end_velocity() ),
        __pitch( other->get_pitch() ),
        __gain( other->get_gain() ),
        __sample( sample )
{
}
 
InstrumentLayer::~InstrumentLayer()
{
}
 
void InstrumentLayer::set_sample( std::shared_ptr<Sample> sample )
{
        __sample = sample;
}
 
void InstrumentLayer::set_pitch( float fValue )
{
        if ( fValue < Instrument::fPitchMin || fValue > Instrument::fPitchMax ) {
                WARNINGLOG( QString( "Provided pitch out of bound [%1;%2]. Rounding to nearest allowed value." )
                                        .arg( Instrument::fPitchMin ).arg( Instrument::fPitchMax ) );
        }
        __pitch = std::clamp( fValue, Instrument::fPitchMin, Instrument::fPitchMax );
}
 
void InstrumentLayer::load_sample( float fBpm )
{
        if ( __sample != nullptr ) {
                __sample->load( fBpm );
        }
}
 
void InstrumentLayer::unload_sample()
{
        if ( __sample != nullptr ) {
                __sample->unload();
        }
}
 
std::shared_ptr<InstrumentLayer> InstrumentLayer::load_from( XMLNode* pNode, const QString& sDrumkitPath, const License& drumkitLicense, bool bSilent )
{
        auto pHydrogen = Hydrogen::get_instance();
        
        QString sFilename = pNode->read_string( "filename", "", false, false, bSilent );
        QString sAbsoluteFilename = sFilename;
 
        if ( ! Filesystem::file_exists( sFilename, true ) && ! sDrumkitPath.isEmpty() &&
                 ! sFilename.startsWith( "/" ) ) {
 
#ifdef H2CORE_HAVE_OSC
                if ( pHydrogen->isUnderSessionManagement() ) {
                        // If we use the NSM support and the sample files to save
                        // are corresponding to the drumkit linked/located in the
                        // session folder, we have to ensure the relative paths
                        // are loaded. This is vital in order to support
                        // renaming, duplicating, and porting sessions.
 
                        // QFileInfo::isRelative() can not be used in here as
                        // samples within drumkits within the user or system
                        // drumkit folder are stored relatively as well (by saving
                        // just the filename).
                        if ( sFilename.left( 2 ) == "./" ||
                                 sFilename.left( 2 ) == ".\\" ) {
                                // Removing the leading "." of the relative path in
                                // sFilename while still using the associated folder
                                // separator.
                                sAbsoluteFilename = NsmClient::get_instance()->getSessionFolderPath() +
                                        sFilename.right( sFilename.size() - 1 );
                        }
                        else {
                                sFilename = sDrumkitPath + "/" + sFilename;
                                sAbsoluteFilename = sFilename;
                        }
                }
                else {
                        sFilename = sDrumkitPath + "/" + sFilename;
                        sAbsoluteFilename = sFilename;
                }
#else
                sFilename = sDrumkitPath + "/" + sFilename;
                sAbsoluteFilename = sFilename;
#endif
        }
 
        std::shared_ptr<Sample> pSample = nullptr;
        if ( Filesystem::file_exists( sAbsoluteFilename, true ) ) {
                pSample = std::make_shared<Sample>( sFilename, drumkitLicense );
 
                // If 'ismodified' is not present, InstrumentLayer was stored as
                // part of a drumkit. All the additional Sample info, like Loops,
                // envelopes etc., were not written to disk and we won't load the
                // sample.
                bool bIsModified = pNode->read_bool( "ismodified", false, true, false, true );
                pSample->set_is_modified( bIsModified );
        
                if ( bIsModified ) {
                
                        Sample::Loops loops;
                        loops.mode = Sample::parse_loop_mode( pNode->read_string( "smode", "forward", false, false, bSilent ) );
                        loops.start_frame = pNode->read_int( "startframe", 0, false, false, bSilent );
                        loops.loop_frame = pNode->read_int( "loopframe", 0, false, false, bSilent );
                        loops.count = pNode->read_int( "loops", 0, false, false, bSilent );
                        loops.end_frame = pNode->read_int( "endframe", 0, false, false, bSilent );
                        pSample->set_loops( loops );
        
                        Sample::Rubberband rubberband;
                        rubberband.use = pNode->read_int( "userubber", 0, false, false, bSilent );
                        rubberband.divider = pNode->read_float( "rubberdivider", 0.0, false, false, bSilent );
                        rubberband.c_settings = pNode->read_int( "rubberCsettings", 1, false, false, bSilent );
                        rubberband.pitch = pNode->read_float( "rubberPitch", 0.0, false, false, bSilent );
 
                        // Check whether the rubberband executable is present.
                        if ( ! Filesystem::file_exists( Preferences::get_instance()->
                                                                                        m_rubberBandCLIexecutable ) ) {
                                rubberband.use = false;
                        }
                        pSample->set_rubberband( rubberband );
        
                        // FIXME, kill EnvelopePoint, create Envelope class
                        EnvelopePoint pt;
 
                        Sample::VelocityEnvelope velocityEnvelope;
                        XMLNode volumeNode = pNode->firstChildElement( "volume" );
                        while ( ! volumeNode.isNull()  ) {
                                pt.frame = volumeNode.read_int( "volume-position", 0, false, false, bSilent );
                                pt.value = volumeNode.read_int( "volume-value", 0, false, false , bSilent);
                                velocityEnvelope.push_back( pt );
                                volumeNode = volumeNode.nextSiblingElement( "volume" );
                        }
                        pSample->set_velocity_envelope( velocityEnvelope );
 
                        Sample::VelocityEnvelope panEnvelope;
                        XMLNode panNode = pNode->firstChildElement( "pan" );
                        while ( ! panNode.isNull()  ) {
                                pt.frame = panNode.read_int( "pan-position", 0, false, false, bSilent );
                                pt.value = panNode.read_int( "pan-value", 0, false, false, bSilent );
                                panEnvelope.push_back( pt );
                                panNode = panNode.nextSiblingElement( "pan" );
                        }
                        pSample->set_pan_envelope( panEnvelope );
                }
        }
        else {
                WARNINGLOG( QString( "Sample file [%1] does not exist" )
                                        .arg( sAbsoluteFilename ) );
        }
        
        auto pLayer = std::make_shared<InstrumentLayer>( pSample );
        pLayer->set_start_velocity( pNode->read_float( "min", 0.0,
                                                                                                   true, true, bSilent  ) );
        pLayer->set_end_velocity( pNode->read_float( "max", 1.0,
                                                                                                 true, true, bSilent ) );
        pLayer->set_gain( pNode->read_float( "gain", 1.0,
                                                                                 true, false, bSilent ) );
        pLayer->set_pitch( pNode->read_float( "pitch", 0.0,
                                                                                  true, false, bSilent ) );
        return pLayer;
}
 
void InstrumentLayer::save_to( XMLNode* node, bool bFull )
{
        auto pHydrogen = Hydrogen::get_instance();
        auto pSample = get_sample();
        if ( pSample == nullptr ) {
                ERRORLOG( "No sample associated with layer. Skipping it" );
                return;
        }
        
        XMLNode layer_node = node->createNode( "layer" );
 
        QString sFilename;
        if ( bFull ) {
 
                if ( pHydrogen->isUnderSessionManagement() ) {
                        // If we use the NSM support and the sample files to save
                        // are corresponding to the drumkit linked/located in the
                        // session folder, we have to ensure the relative paths
                        // are written out. This is vital in order to support
                        // renaming, duplicating, and porting sessions.
                        if ( pSample->get_raw_filepath().startsWith( '.' ) ) {
                                sFilename = pSample->get_raw_filepath();
                        }
                        else {
                                sFilename = Filesystem::prepare_sample_path( pSample->get_filepath() );
                        }
                }
                else {
                        sFilename = Filesystem::prepare_sample_path( pSample->get_filepath() );
                }
        }
        else {
                sFilename = pSample->get_filename();
        }
        
        layer_node.write_string( "filename", sFilename );
        layer_node.write_float( "min", __start_velocity );
        layer_node.write_float( "max", __end_velocity );
        layer_node.write_float( "gain", __gain );
        layer_node.write_float( "pitch", __pitch );
 
        if ( bFull ) {
                layer_node.write_bool( "ismodified", pSample->get_is_modified() );
                layer_node.write_string( "smode", pSample->get_loop_mode_string() );
 
                Sample::Loops loops = pSample->get_loops();
                layer_node.write_int( "startframe", loops.start_frame );
                layer_node.write_int( "loopframe", loops.loop_frame );
                layer_node.write_int( "loops", loops.count );
                layer_node.write_int( "endframe", loops.end_frame );
 
                Sample::Rubberband rubberband = pSample->get_rubberband();
                layer_node.write_int( "userubber", static_cast<int>(rubberband.use) );
                layer_node.write_float( "rubberdivider", rubberband.divider );
                layer_node.write_int( "rubberCsettings", rubberband.c_settings );
                layer_node.write_float( "rubberPitch", rubberband.pitch );
 
                for ( const auto& velocity : *pSample->get_velocity_envelope() ) {
                        XMLNode volumeNode = layer_node.createNode( "volume" );
                        volumeNode.write_int( "volume-position", velocity.frame );
                        volumeNode.write_int( "volume-value", velocity.value );
                }
 
                for ( const auto& pan : *pSample->get_pan_envelope() ) {
                        XMLNode panNode = layer_node.createNode( "pan" );
                        panNode.write_int( "pan-position", pan.frame );
                        panNode.write_int( "pan-value", pan.value );
                }
        }
}
 
QString InstrumentLayer::toQString( const QString& sPrefix, bool bShort ) const {
        QString s = Base::sPrintIndention;
        QString sOutput;
        if ( ! bShort ) {
                sOutput = QString( "%1[InstrumentLayer]\n" ).arg( sPrefix )
                        .append( QString( "%1%2gain: %3\n" ).arg( sPrefix ).arg( s ).arg( __gain ) )
                        .append( QString( "%1%2pitch: %3\n" ).arg( sPrefix ).arg( s ).arg( __pitch ) )
                        .append( QString( "%1%2start_velocity: %3\n" ).arg( sPrefix ).arg( s ).arg( __start_velocity ) )
                        .append( QString( "%1%2end_velocity: %3\n" ).arg( sPrefix ).arg( s ).arg( __end_velocity ) );
                if ( __sample != nullptr ) {
                        sOutput.append( QString( "%1" )
                                                        .arg( __sample->toQString( sPrefix + s, bShort ) ) );
                } else {
                        sOutput.append( QString( "%1%2sample: nullptr\n" ).arg( sPrefix ).arg( s ) );
                }
        }
        else {
                sOutput = QString( "[InstrumentLayer]" )
                        .append( QString( " gain: %1" ).arg( __gain ) )
                        .append( QString( ", pitch: %1" ).arg( __pitch ) )
                        .append( QString( ", start_velocity: %1" ).arg( __start_velocity ) )
                        .append( QString( ", end_velocity: %1" ).arg( __end_velocity ) );
                if ( __sample != nullptr ) { 
                        sOutput.append( QString( ", sample: %1\n" ).arg( __sample->get_filepath() ) );
                } else {
                        sOutput.append( QString( ", sample: nullptr\n" ) );
                }
        }
        
        return sOutput;
}
 
};
 
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