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AudioEngine.cpp
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AudioEngine.cpp
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/*
* Hydrogen
* Copyright(c) 2002-2008 by Alex >Comix< Cominu [comix@users.sourceforge.net]
* Copyright(c) 2008-2024 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/AudioEngine/AudioEngine.h>
#ifdef WIN32
# include "core/Timehelper.h"
#else
# include <unistd.h>
# include <sys/time.h>
#endif
#include <limits>
#include <sstream>
#include <core/AudioEngine/TransportPosition.h>
#include <core/Basics/AutomationPath.h>
#include <core/Basics/Drumkit.h>
#include <core/Basics/InstrumentComponent.h>
#include <core/Basics/InstrumentLayer.h>
#include <core/Basics/InstrumentList.h>
#include <core/Basics/Note.h>
#include <core/Basics/Pattern.h>
#include <core/Basics/PatternList.h>
#include <core/Basics/Song.h>
#include <core/EventQueue.h>
#include <core/FX/Effects.h>
#include <core/Helpers/Filesystem.h>
#include <core/Helpers/Random.h>
#include <core/Hydrogen.h>
#include <core/IO/AlsaAudioDriver.h>
#include <core/IO/AlsaMidiDriver.h>
#include <core/IO/AudioOutput.h>
#include <core/IO/CoreAudioDriver.h>
#include <core/IO/CoreMidiDriver.h>
#include <core/IO/DiskWriterDriver.h>
#include <core/IO/FakeDriver.h>
#include <core/IO/JackAudioDriver.h>
#include <core/IO/JackMidiDriver.h>
#include <core/IO/MidiInput.h>
#include <core/IO/MidiOutput.h>
#include <core/IO/NullDriver.h>
#include <core/IO/OssDriver.h>
#include <core/IO/PortAudioDriver.h>
#include <core/IO/PortMidiDriver.h>
#include <core/IO/PulseAudioDriver.h>
#include <core/Preferences/Preferences.h>
#include <core/Sampler/Sampler.h>
#define AUDIO_ENGINE_DEBUG 0
namespace H2Core
{
#define AE_INFOLOG(x) INFOLOG( QString( "[%1] %2" ) \
.arg( Hydrogen::get_instance()->getAudioEngine()->getDriverNames() ).arg( x ) );
#define AE_WARNINGLOG(x) WARNINGLOG( QString( "[%1] %2" ) \
.arg( Hydrogen::get_instance()->getAudioEngine()->getDriverNames() ).arg( x ) );
#define AE_ERRORLOG(x) ERRORLOG( QString( "[%1] %2" ) \
.arg( Hydrogen::get_instance()->getAudioEngine()->getDriverNames() ).arg( x ) );
#define AE_DEBUGLOG(x) if ( __logger->should_log( Logger::Debug ) ) { \
__logger->log( Logger::Debug, _class_name(), __FUNCTION__, \
QString( "%1" ).arg( x ), "\033[34;1m" ); }
/** Gets the current time.
* \return Current time obtained by gettimeofday()*/
inline timeval currentTime2()
{
struct timeval now;
gettimeofday( &now, nullptr );
return now;
}
AudioEngine::AudioEngine()
: m_pSampler( nullptr )
, m_pAudioDriver( nullptr )
, m_pMidiDriver( nullptr )
, m_pMidiDriverOut( nullptr )
, m_state( State::Initialized )
, m_pMetronomeInstrument( nullptr )
, m_fSongSizeInTicks( MAX_NOTES )
, m_nRealtimeFrame( 0 )
, m_fMasterPeak_L( 0.0f )
, m_fMasterPeak_R( 0.0f )
, m_nextState( State::Ready )
, m_fProcessTime( 0.0f )
, m_fLadspaTime( 0.0f )
, m_fMaxProcessTime( 0.0f )
, m_fNextBpm( 120 )
, m_pLocker({nullptr, 0, nullptr, false})
, m_fLastTickEnd( 0 )
, m_bLookaheadApplied( false )
, m_nLoopsDone( 0 )
{
m_pTransportPosition = std::make_shared<TransportPosition>( "Transport" );
m_pQueuingPosition = std::make_shared<TransportPosition>( "Queuing" );
m_pSampler = new Sampler;
m_pEventQueue = EventQueue::get_instance();
srand( time( nullptr ) );
// Create metronome instrument
// Get the path to the file of the metronome sound.
QString sMetronomeFilename = Filesystem::click_file_path();
m_pMetronomeInstrument = std::make_shared<Instrument>( METRONOME_INSTR_ID, "metronome" );
auto pLayer = std::make_shared<InstrumentLayer>( Sample::load( sMetronomeFilename ) );
auto pComponent = m_pMetronomeInstrument->get_component( 0 );
if ( pComponent != nullptr ) {
pComponent->setLayer( pLayer, 0 );
} else {
___ERRORLOG( "Invalid default component" );
}
m_pMetronomeInstrument->set_is_metronome_instrument(true);
m_pMetronomeInstrument->set_volume(
Preferences::get_instance()->m_fMetronomeVolume );
m_AudioProcessCallback = &audioEngine_process;
#ifdef H2CORE_HAVE_LADSPA
Effects::create_instance();
#endif
}
AudioEngine::~AudioEngine()
{
stopAudioDrivers();
if ( getState() != State::Initialized ) {
AE_ERRORLOG( "Error the audio engine is not in State::Initialized" );
return;
}
m_pSampler->stopPlayingNotes();
this->lock( RIGHT_HERE );
AE_INFOLOG( "*** Hydrogen audio engine shutdown ***" );
clearNoteQueues();
setState( State::Uninitialized );
m_pTransportPosition->reset();
m_pTransportPosition = nullptr;
m_pQueuingPosition->reset();
m_pQueuingPosition = nullptr;
m_pMetronomeInstrument = nullptr;
this->unlock();
#ifdef H2CORE_HAVE_LADSPA
delete Effects::get_instance();
#endif
delete m_pSampler;
}
Sampler* AudioEngine::getSampler() const
{
assert(m_pSampler);
return m_pSampler;
}
void AudioEngine::lock( const char* file, unsigned int line, const char* function )
{
#ifdef H2CORE_HAVE_DEBUG
// Is there a more convenient way to convert the thread id to QSTring?
std::stringstream tmpStream;
tmpStream << std::this_thread::get_id();
if (__logger->should_log(Logger::Locks)) {
__logger->log( Logger::Locks, _class_name(), __FUNCTION__,
QString( "[thread id: %1] : %2 : [line: %3] : %4" )
.arg( QString::fromStdString( tmpStream.str() ) )
.arg( function ).arg( line ).arg( file ) );
}
#endif
m_EngineMutex.lock();
m_pLocker.file = file;
m_pLocker.line = line;
m_pLocker.function = function;
m_pLocker.isLocked = true;
m_LockingThread = std::this_thread::get_id();
#ifdef H2CORE_HAVE_DEBUG
if ( __logger->should_log( Logger::Locks ) ) {
__logger->log( Logger::Locks, _class_name(), __FUNCTION__,
QString( "[thread id: %1] locked" )
.arg( QString::fromStdString( tmpStream.str() ) ) );
}
#endif
}
bool AudioEngine::tryLock( const char* file, unsigned int line, const char* function )
{
#ifdef H2CORE_HAVE_DEBUG
// Is there a more convenient way to convert the thread id to QSTring?
std::stringstream tmpStream;
tmpStream << std::this_thread::get_id();
if ( __logger->should_log( Logger::Locks ) ) {
__logger->log( Logger::Locks, _class_name(), __FUNCTION__,
QString( "[thread id: %1] : %2 : [line: %3] : %4" )
.arg( QString::fromStdString( tmpStream.str() ) )
.arg( function ).arg( line ).arg( file ) );
}
#endif
bool res = m_EngineMutex.try_lock();
if ( !res ) {
// Lock not obtained
return false;
}
m_pLocker.file = file;
m_pLocker.line = line;
m_pLocker.function = function;
m_pLocker.isLocked = true;
m_LockingThread = std::this_thread::get_id();
#ifdef H2CORE_HAVE_DEBUG
if ( __logger->should_log( Logger::Locks ) ) {
__logger->log( Logger::Locks, _class_name(), __FUNCTION__,
QString( "[thread id: %1] locked" )
.arg( QString::fromStdString( tmpStream.str() ) ) );
}
#endif
return true;
}
bool AudioEngine::tryLockFor( const std::chrono::microseconds& duration, const char* file, unsigned int line, const char* function )
{
std::stringstream tmpStream;
tmpStream << std::this_thread::get_id();
#ifdef H2CORE_HAVE_DEBUG
if ( __logger->should_log( Logger::Locks ) ) {
__logger->log( Logger::Locks, _class_name(), __FUNCTION__,
QString( "[thread id: %1] : %2 : [line: %3] : %4" )
.arg( QString::fromStdString( tmpStream.str() ) )
.arg( function ).arg( line ).arg( file ) );
}
#endif
bool res = m_EngineMutex.try_lock_for( duration );
if ( !res ) {
// Lock not obtained
AE_WARNINGLOG( QString( "[thread id: %1] : Lock timeout: lock timeout %2:%3:%4, lock held by %5:%6:%7" )
.arg( QString::fromStdString( tmpStream.str() ) )
.arg( file ).arg( function ).arg( line )
.arg( m_pLocker.file ).arg( m_pLocker.function )
.arg( m_pLocker.line ));
return false;
}
m_pLocker.file = file;
m_pLocker.line = line;
m_pLocker.function = function;
m_pLocker.isLocked = true;
m_LockingThread = std::this_thread::get_id();
#ifdef H2CORE_HAVE_DEBUG
if ( __logger->should_log( Logger::Locks ) ) {
__logger->log( Logger::Locks, _class_name(), __FUNCTION__,
QString( "[thread id: %1] locked" )
.arg( QString::fromStdString( tmpStream.str() ) ) );
}
#endif
return true;
}
void AudioEngine::unlock()
{
// Leave "__locker" dirty as it indicated the function which
// locked the audio engine.
m_pLocker.isLocked = false;
m_LockingThread = std::thread::id();
m_EngineMutex.unlock();
#ifdef H2CORE_HAVE_DEBUG
std::stringstream tmpStream;
tmpStream << std::this_thread::get_id();
if ( __logger->should_log( Logger::Locks ) ) {
__logger->log( Logger::Locks, _class_name(), __FUNCTION__,
QString( "[thread id: %1]" )
.arg( QString::fromStdString( tmpStream.str() ) ) );
}
#endif
}
void AudioEngine::startPlayback()
{
AE_INFOLOG( "" );
if ( getState() != State::Ready ) {
AE_ERRORLOG( "Error the audio engine is not in State::Ready" );
return;
}
setState( State::Playing );
handleSelectedPattern();
}
void AudioEngine::stopPlayback()
{
AE_INFOLOG( "" );
if ( getState() != State::Playing ) {
AE_ERRORLOG( QString( "Error the audio engine is not in State::Playing but [%1]" )
.arg( static_cast<int>( getState() ) ) );
return;
}
setState( State::Ready );
}
void AudioEngine::reset( bool bWithJackBroadcast ) {
const auto pHydrogen = Hydrogen::get_instance();
clearNoteQueues();
m_fMasterPeak_L = 0.0f;
m_fMasterPeak_R = 0.0f;
#ifdef H2CORE_HAVE_LADSPA
for ( int ii = 0; ii < MAX_FX; ++ii ) {
m_fFXPeak_L[ ii ] = 0;
m_fFXPeak_R[ ii ] = 0;
}
#endif
m_fLastTickEnd = 0;
m_nLoopsDone = 0;
m_bLookaheadApplied = false;
m_fSongSizeInTicks = MAX_NOTES;
setNextBpm( 120 );
m_pTransportPosition->reset();
m_pQueuingPosition->reset();
updateBpmAndTickSize( m_pTransportPosition );
updateBpmAndTickSize( m_pQueuingPosition );
updatePlayingPatterns();
#ifdef H2CORE_HAVE_JACK
if ( pHydrogen->hasJackTransport() && bWithJackBroadcast ) {
// Tell the JACK server to locate to the beginning as well
// (done in the next run of audioEngine_process()).
static_cast<JackAudioDriver*>( m_pAudioDriver )->locateTransport( 0 );
}
#endif
}
float AudioEngine::computeTickSize( const int nSampleRate, const float fBpm, const int nResolution)
{
float fTickSize = nSampleRate * 60.0 / fBpm / nResolution;
return fTickSize;
}
double AudioEngine::computeDoubleTickSize( const int nSampleRate, const float fBpm, const int nResolution)
{
double fTickSize = static_cast<double>(nSampleRate) * 60.0 /
static_cast<double>(fBpm) /
static_cast<double>(nResolution);
return fTickSize;
}
float AudioEngine::getElapsedTime() const {
const auto pHydrogen = Hydrogen::get_instance();
const auto pDriver = pHydrogen->getAudioOutput();
if ( pDriver == nullptr || pDriver->getSampleRate() == 0 ) {
return 0;
}
return ( m_pTransportPosition->getFrame() -
m_pTransportPosition->getFrameOffsetTempo() )/
static_cast<float>(pDriver->getSampleRate());
}
void AudioEngine::locate( const double fTick, bool bWithJackBroadcast ) {
const auto pHydrogen = Hydrogen::get_instance();
#ifdef H2CORE_HAVE_JACK
// In case Hydrogen is using the JACK server to sync transport, it
// is up to the server to relocate to a different position. It
// does so after the current cycle of audioEngine_process() and we
// will pick it up at the beginning of the next one.
if ( pHydrogen->hasJackTransport() && bWithJackBroadcast ) {
double fNewTick = fTick;
// As the tick mismatch is lost when converting a sought location from
// ticks into frames, sending it to the JACK server, receiving it in a
// callback, and providing it here, we will use a heuristic in order to
// not experience any glitches upon relocation.
if ( std::fmod( fTick, std::floor( fTick ) ) >= 0.97 ) {
fNewTick = std::round( fTick );
AE_INFOLOG( QString( "Tick [%1] will be rounded to [%2] in order to avoid glitches" )
.arg( fTick, 0, 'E', -1 ).arg( fNewTick ) );
}
double fTickMismatch;
const long long nNewFrame = TransportPosition::computeFrameFromTick(
fNewTick, &fTickMismatch );
#if AUDIO_ENGINE_DEBUG
AE_DEBUGLOG( QString( "[Locate via JACK server] fTick: %1, fNewTick: %2, resulting frame: %3, nNewFrame: %4, FrameOffsetTempo: %5" )
.arg( fTick ).arg( fNewTick )
.arg( nNewFrame - m_pTransportPosition->getFrameOffsetTempo() )
.arg( nNewFrame )
.arg( m_pTransportPosition->getFrameOffsetTempo() ) );
#endif
static_cast<JackAudioDriver*>( m_pAudioDriver )->
locateTransport( nNewFrame -
m_pTransportPosition->getFrameOffsetTempo() );
return;
}
#endif
resetOffsets();
m_fLastTickEnd = fTick;
const long long nNewFrame = TransportPosition::computeFrameFromTick(
fTick, &m_pTransportPosition->m_fTickMismatch );
#if AUDIO_ENGINE_DEBUG
AE_DEBUGLOG( QString( "fTick: %1, nNewFrame: %2" )
.arg( fTick ).arg( nNewFrame ) );
#endif
updateTransportPosition( fTick, nNewFrame, m_pTransportPosition );
m_pQueuingPosition->set( m_pTransportPosition );
handleTempoChange();
}
void AudioEngine::locateToFrame( const long long nFrame ) {
#if AUDIO_ENGINE_DEBUG
AE_DEBUGLOG( QString( "nFrame: %1" ).arg( nFrame ) );
#endif
resetOffsets();
const double fNewTick = TransportPosition::computeTickFromFrame( nFrame );
m_fLastTickEnd = fNewTick;
// Assure tick<->frame can be converted properly using mismatch.
const long long nNewFrame = TransportPosition::computeFrameFromTick(
fNewTick, &m_pTransportPosition->m_fTickMismatch );
updateTransportPosition( fNewTick, nNewFrame, m_pTransportPosition );
m_pQueuingPosition->set( m_pTransportPosition );
handleTempoChange();
// While the locate() function is wrapped by a caller in the
// CoreActionController - which takes care of queuing the
// relocation event - this function is only meant to be used in
// very specific circumstances and has to queue it itself.
EventQueue::get_instance()->push_event( EVENT_RELOCATION, 0 );
}
void AudioEngine::resetOffsets() {
clearNoteQueues();
m_fLastTickEnd = 0;
m_nLoopsDone = 0;
m_bLookaheadApplied = false;
m_pTransportPosition->setFrameOffsetTempo( 0 );
m_pTransportPosition->setTickOffsetQueuing( 0 );
m_pTransportPosition->setTickOffsetSongSize( 0 );
m_pTransportPosition->setLastLeadLagFactor( 0 );
m_pQueuingPosition->setFrameOffsetTempo( 0 );
m_pQueuingPosition->setTickOffsetQueuing( 0 );
m_pQueuingPosition->setTickOffsetSongSize( 0 );
m_pQueuingPosition->setLastLeadLagFactor( 0 );
}
void AudioEngine::incrementTransportPosition( uint32_t nFrames ) {
const long long nNewFrame = m_pTransportPosition->getFrame() + nFrames;
const double fNewTick = TransportPosition::computeTickFromFrame( nNewFrame );
m_pTransportPosition->m_fTickMismatch = 0;
#if AUDIO_ENGINE_DEBUG
AE_DEBUGLOG( QString( "nFrames: %1, old frame: %2, new frame: %3, old tick: %4, new tick: %5, ticksize: %6" )
.arg( nFrames )
.arg( m_pTransportPosition->getFrame() )
.arg( nNewFrame )
.arg( m_pTransportPosition->getDoubleTick(), 0, 'f' )
.arg( fNewTick, 0, 'f' )
.arg( m_pTransportPosition->getTickSize(), 0, 'f' ) );
#endif
updateTransportPosition( fNewTick, nNewFrame, m_pTransportPosition );
// We are not updating the queuing position in here. This will be
// done in updateNoteQueue().
}
bool AudioEngine::isEndOfSongReached( std::shared_ptr<TransportPosition> pPos ) const {
const auto pSong = Hydrogen::get_instance()->getSong();
if ( pSong != nullptr && pSong->getMode() == Song::Mode::Song &&
( pSong->getLoopMode() == Song::LoopMode::Disabled &&
pPos->getDoubleTick() >= m_fSongSizeInTicks ||
pSong->getLoopMode() == Song::LoopMode::Finishing &&
pPos->getDoubleTick() >= m_fSongSizeInTicks *
(1 + static_cast<double>(m_nLoopsDone)) ) ) {
return true;
}
return false;
}
void AudioEngine::updateTransportPosition( double fTick, long long nFrame, std::shared_ptr<TransportPosition> pPos ) {
const auto pHydrogen = Hydrogen::get_instance();
#if AUDIO_ENGINE_DEBUG
AE_DEBUGLOG( QString( "[Before] fTick: %1, nFrame: %2, pos: %3" )
.arg( fTick, 0, 'f' )
.arg( nFrame )
.arg( pPos->toQString( "", true ) ) );
#endif
if ( pHydrogen->getMode() == Song::Mode::Song ) {
updateSongTransportPosition( fTick, nFrame, pPos );
}
else { // Song::Mode::Pattern
updatePatternTransportPosition( fTick, nFrame, pPos );
}
updateBpmAndTickSize( pPos );
// Beat - Bar (- Tick) information is a coarse grained position
// information and might not change on small position increments.
bool bBBTChanged = false;
const int nBar = std::max( pPos->getColumn(), 0 ) + 1;
if ( nBar != pPos->getBar() ) {
pPos->setBar( nBar );
bBBTChanged = true;
}
const int nBeat = static_cast<int>(
std::floor(static_cast<float>(pPos->getPatternTickPosition()) / 48 )) + 1;
if ( pPos->getBeat() != nBeat ) {
pPos->setBeat( nBeat );
bBBTChanged = true;
}
if ( pPos == m_pTransportPosition && bBBTChanged ) {
EventQueue::get_instance()->push_event( EVENT_BBT_CHANGED, 0 );
}
#if AUDIO_ENGINE_DEBUG
AE_DEBUGLOG( QString( "[After] fTick: %1, nFrame: %2, pos: %3, frame: %4" )
.arg( fTick, 0, 'f' )
.arg( nFrame )
.arg( pPos->toQString( "", true ) )
.arg( pPos->getFrame() ) );
#endif
}
void AudioEngine::updatePatternTransportPosition( double fTick, long long nFrame, std::shared_ptr<TransportPosition> pPos ) {
auto pHydrogen = Hydrogen::get_instance();
pPos->setTick( fTick );
pPos->setFrame( nFrame );
const double fPatternStartTick =
static_cast<double>(pPos->getPatternStartTick());
const int nPatternSize = pPos->getPatternSize();
if ( fTick >= fPatternStartTick + static_cast<double>(nPatternSize) ||
fTick < fPatternStartTick ) {
// Transport went past the end of the pattern or Pattern mode
// was just activated.
pPos->setPatternStartTick( pPos->getPatternStartTick() +
static_cast<long>(std::floor( ( fTick - fPatternStartTick ) /
static_cast<double>(nPatternSize) )) *
nPatternSize );
// In stacked pattern mode we will only update the playing
// patterns if the transport of the original pattern is looped
// back to the beginning. This way all patterns start fresh.
//
// In selected pattern mode pattern change does occur
// asynchonically by user interaction.
if ( pHydrogen->getPatternMode() == Song::PatternMode::Stacked ) {
updatePlayingPatternsPos( pPos );
}
}
long nPatternTickPosition = static_cast<long>(std::floor( fTick )) -
pPos->getPatternStartTick();
if ( nPatternTickPosition > nPatternSize ) {
nPatternTickPosition = ( static_cast<long>(std::floor( fTick ))
- pPos->getPatternStartTick() ) %
nPatternSize;
}
pPos->setPatternTickPosition( nPatternTickPosition );
}
void AudioEngine::updateSongTransportPosition( double fTick, long long nFrame, std::shared_ptr<TransportPosition> pPos ) {
#if AUDIO_ENGINE_DEBUG
AE_DEBUGLOG( QString( "[Before] fTick: %1, nFrame: %2, m_fSongSizeInTicks: %3, pos: %4" )
.arg( fTick, 0, 'f' )
.arg( nFrame )
.arg( m_fSongSizeInTicks, 0, 'f' )
.arg( pPos->toQString( "", true ) ) );
#endif
const auto pHydrogen = Hydrogen::get_instance();
const auto pSong = pHydrogen->getSong();
pPos->setTick( fTick );
pPos->setFrame( nFrame );
if ( fTick < 0 ) {
AE_ERRORLOG( QString( "[%1] Provided tick [%2] is negative!" )
.arg( pPos->getLabel() )
.arg( fTick, 0, 'f' ) );
return;
}
int nNewColumn;
if ( pSong == nullptr || pSong->getPatternGroupVector()->size() == 0 ) {
// There are no patterns in song.
pPos->setPatternStartTick( 0 );
pPos->setPatternTickPosition( 0 );
nNewColumn = 0;
}
else {
long nPatternStartTick;
nNewColumn = pHydrogen->getColumnForTick(
std::floor( fTick ), pSong->isLoopEnabled(), &nPatternStartTick );
pPos->setPatternStartTick( nPatternStartTick );
// While the current tick position is constantly increasing,
// m_nPatternStartTick is only defined between 0 and
// m_fSongSizeInTicks. We will take care of the looping next.
if ( fTick >= m_fSongSizeInTicks && m_fSongSizeInTicks != 0 ) {
pPos->setPatternTickPosition(
std::fmod( std::floor( fTick ) - nPatternStartTick,
m_fSongSizeInTicks ) );
}
else {
pPos->setPatternTickPosition( std::floor( fTick ) - nPatternStartTick );
}
}
if ( pPos->getColumn() != nNewColumn ) {
pPos->setColumn( nNewColumn );
updatePlayingPatternsPos( pPos );
if ( pPos == m_pTransportPosition ) {
handleSelectedPattern();
}
}
#if AUDIO_ENGINE_DEBUG
AE_DEBUGLOG( QString( "[After] fTick: %1, nFrame: %2, m_fSongSizeInTicks: %3, pos: %4, frame: %5" )
.arg( fTick, 0, 'f' )
.arg( nFrame )
.arg( m_fSongSizeInTicks, 0, 'f' )
.arg( pPos->toQString( "", true ) )
.arg( pPos->getFrame() ) );
#endif
}
void AudioEngine::updateBpmAndTickSize( std::shared_ptr<TransportPosition> pPos ) {
if ( ! ( m_state == State::Playing ||
m_state == State::Ready ||
m_state == State::Testing ) ) {
return;
}
auto pHydrogen = Hydrogen::get_instance();
auto pSong = pHydrogen->getSong();
const float fOldBpm = pPos->getBpm();
const float fNewBpm = getBpmAtColumn( pPos->getColumn() );
if ( fNewBpm != fOldBpm ) {
pPos->setBpm( fNewBpm );
if ( pPos == m_pTransportPosition ) {
EventQueue::get_instance()->push_event( EVENT_TEMPO_CHANGED, 0 );
}
}
int nResolution;
if ( pSong != nullptr ) {
nResolution = pSong->getResolution();
} else {
nResolution = Song::nDefaultResolution;
}
const float fOldTickSize = pPos->getTickSize();
const float fNewTickSize = AudioEngine::computeTickSize(
static_cast<float>(m_pAudioDriver->getSampleRate()), fNewBpm,
nResolution );
// Nothing changed - avoid recomputing
#if defined(WIN32) and !defined(WIN64)
// For some reason two identical numbers (according to their
// values when printing them) are not equal to each other in 32bit
// Windows. Course graining the tick change in here will do no
// harm except of for preventing tiny tempo changes. Integer value
// changes should not be affected.
if ( std::abs( fNewTickSize - fOldTickSize ) < 1e-2 ) {
#else
if ( fNewTickSize == fOldTickSize ) {
#endif
return;
}
if ( fNewTickSize == 0 ) {
AE_ERRORLOG( QString( "[%1] Something went wrong while calculating the tick size. [oldTS: %2, newTS: %3]" )
.arg( pPos->getLabel() )
.arg( fOldTickSize, 0, 'f' ).arg( fNewTickSize, 0, 'f' ) );
return;
}
// The lookahead in updateNoteQueue is tempo dependent (since it
// contains both tick and frame components). By resetting this
// variable we allow that the next one calculated to have
// arbitrary values.
pPos->setLastLeadLagFactor( 0 );
#if AUDIO_ENGINE_DEBUG
AE_DEBUGLOG(QString( "[%1] [%7,%8] sample rate: %2, tick size: %3 -> %4, bpm: %5 -> %6" )
.arg( pPos->getLabel() )
.arg( static_cast<float>(m_pAudioDriver->getSampleRate()))
.arg( fOldTickSize, 0, 'f' )
.arg( fNewTickSize, 0, 'f' )
.arg( fOldBpm, 0, 'f' )
.arg( pPos->getBpm(), 0, 'f' )
.arg( pPos->getFrame() )
.arg( pPos->getDoubleTick(), 0, 'f' ) );
#endif
pPos->setTickSize( fNewTickSize );
calculateTransportOffsetOnBpmChange( pPos );
}
void AudioEngine::calculateTransportOffsetOnBpmChange( std::shared_ptr<TransportPosition> pPos ) {
// If we deal with a single speed for the whole song, the frames
// since the beginning of the song are tempo-dependent and have to
// be recalculated.
const long long nNewFrame =
TransportPosition::computeFrameFromTick( pPos->getDoubleTick(),
&pPos->m_fTickMismatch );
pPos->setFrameOffsetTempo( nNewFrame - pPos->getFrame() +
pPos->getFrameOffsetTempo() );
if ( m_bLookaheadApplied ) {
// if ( m_fLastTickEnd != 0 ) {
const long long nNewLookahead =
getLeadLagInFrames( pPos->getDoubleTick() ) +
AudioEngine::nMaxTimeHumanize + 1;
const double fNewTickEnd = TransportPosition::computeTickFromFrame(
nNewFrame + nNewLookahead ) + pPos->getTickMismatch();
pPos->setTickOffsetQueuing( fNewTickEnd - m_fLastTickEnd );
#if AUDIO_ENGINE_DEBUG
AE_DEBUGLOG( QString( "[%1 : [%2] timeline] old frame: %3, new frame: %4, tick: %5, nNewLookahead: %6, pPos->getFrameOffsetTempo(): %7, pPos->getTickOffsetQueuing(): %8, fNewTickEnd: %9, m_fLastTickEnd: %10" )
.arg( pPos->getLabel() )
.arg( Hydrogen::get_instance()->isTimelineEnabled() )
.arg( pPos->getFrame() )
.arg( nNewFrame )
.arg( pPos->getDoubleTick(), 0, 'f' )
.arg( nNewLookahead )
.arg( pPos->getFrameOffsetTempo() )
.arg( pPos->getTickOffsetQueuing(), 0, 'f' )
.arg( fNewTickEnd, 0, 'f' )
.arg( m_fLastTickEnd, 0, 'f' )
);
#endif
}
// Happens when the Timeline was either toggled or tempo
// changed while the former was deactivated.
if ( pPos->getFrame() != nNewFrame ) {
pPos->setFrame( nNewFrame );
}
if ( pPos == m_pTransportPosition ) {
handleTempoChange();
}
}
void AudioEngine::clearAudioBuffers( uint32_t nFrames )
{
m_MutexOutputPointer.lock();
float *pBuffer_L, *pBuffer_R;
// clear main out Left and Right
if ( m_pAudioDriver != nullptr ) {
pBuffer_L = m_pAudioDriver->getOut_L();
pBuffer_R = m_pAudioDriver->getOut_R();
assert( pBuffer_L != nullptr && pBuffer_R != nullptr );
memset( pBuffer_L, 0, nFrames * sizeof( float ) );
memset( pBuffer_R, 0, nFrames * sizeof( float ) );
}
#ifdef H2CORE_HAVE_JACK
if ( Hydrogen::get_instance()->hasJackAudioDriver() ) {
JackAudioDriver* pJackAudioDriver = static_cast<JackAudioDriver*>(m_pAudioDriver);
if ( pJackAudioDriver != nullptr ) {
pJackAudioDriver->clearPerTrackAudioBuffers( nFrames );
}
}
#endif
m_MutexOutputPointer.unlock();
#ifdef H2CORE_HAVE_LADSPA
if ( getState() == State::Ready ||
getState() == State::Playing ||
getState() == State::Testing ) {
Effects* pEffects = Effects::get_instance();
for ( unsigned i = 0; i < MAX_FX; ++i ) { // clear FX buffers
LadspaFX* pFX = pEffects->getLadspaFX( i );
if ( pFX != nullptr ) {
assert( pFX->m_pBuffer_L );
assert( pFX->m_pBuffer_R );
memset( pFX->m_pBuffer_L, 0, nFrames * sizeof( float ) );
memset( pFX->m_pBuffer_R, 0, nFrames * sizeof( float ) );
}
}
}
#endif
}
AudioOutput* AudioEngine::createAudioDriver( const Preferences::AudioDriver& driver )
{
AE_INFOLOG( QString( "Creating driver [%1]" )
.arg( Preferences::audioDriverToQString( driver ) ) );
const auto pPref = Preferences::get_instance();
auto pHydrogen = Hydrogen::get_instance();
auto pSong = pHydrogen->getSong();
AudioOutput *pAudioDriver = nullptr;
if ( driver == Preferences::AudioDriver::Oss ) {
pAudioDriver = new OssDriver( m_AudioProcessCallback );
}
else if ( driver == Preferences::AudioDriver::Jack ) {
pAudioDriver = new JackAudioDriver( m_AudioProcessCallback );
#ifdef H2CORE_HAVE_JACK
if ( auto pJackDriver = dynamic_cast<JackAudioDriver*>( pAudioDriver ) ) {
pJackDriver->setConnectDefaults(
Preferences::get_instance()->m_bJackConnectDefaults
);
}
#endif
}
else if ( driver == Preferences::AudioDriver::Alsa ) {
pAudioDriver = new AlsaAudioDriver( m_AudioProcessCallback );
}
else if ( driver == Preferences::AudioDriver::PortAudio ) {
pAudioDriver = new PortAudioDriver( m_AudioProcessCallback );
}
else if ( driver == Preferences::AudioDriver::CoreAudio ) {
pAudioDriver = new CoreAudioDriver( m_AudioProcessCallback );
}
else if ( driver == Preferences::AudioDriver::PulseAudio ) {
pAudioDriver = new PulseAudioDriver( m_AudioProcessCallback );
}
else if ( driver == Preferences::AudioDriver::Fake ) {
AE_WARNINGLOG( "*** Using FAKE audio driver ***" );
pAudioDriver = new FakeDriver( m_AudioProcessCallback );
}
else if ( driver == Preferences::AudioDriver::Disk ) {
pAudioDriver = new DiskWriterDriver( m_AudioProcessCallback );
}
else if ( driver == Preferences::AudioDriver::Null ) {
pAudioDriver = new NullDriver( m_AudioProcessCallback );
}
else {
AE_ERRORLOG( QString( "Unknown driver [%1]" )
.arg( Preferences::audioDriverToQString( driver ) ) );
raiseError( Hydrogen::UNKNOWN_DRIVER );
return nullptr;
}
if ( pAudioDriver == nullptr ) {
AE_INFOLOG( QString( "Unable to create driver [%1]" )
.arg( Preferences::audioDriverToQString( driver ) ) );
return nullptr;
}
// Initialize the audio driver
int nRes = pAudioDriver->init( pPref->m_nBufferSize );
if ( nRes != 0 ) {
AE_ERRORLOG( QString( "Error code [%2] while initializing audio driver [%1]." )
.arg( Preferences::audioDriverToQString( driver ) ).arg( nRes ) );
delete pAudioDriver;
return nullptr;
}
this->lock( RIGHT_HERE );
m_MutexOutputPointer.lock();
// Some audio drivers require to be already registered in the
// AudioEngine while being connected.
m_pAudioDriver = pAudioDriver;
if ( pSong != nullptr ) {
setState( State::Ready );
} else {
setState( State::Prepared );
}
// Unlocking earlier might execute the jack process() callback before we
// are fully initialized.
m_MutexOutputPointer.unlock();
this->unlock();
nRes = m_pAudioDriver->connect();
if ( nRes != 0 ) {
raiseError( Hydrogen::ERROR_STARTING_DRIVER );
AE_ERRORLOG( QString( "Error code [%2] while connecting audio driver [%1]." )
.arg( Preferences::audioDriverToQString( driver ) ).arg( nRes ) );
this->lock( RIGHT_HERE );
m_MutexOutputPointer.lock();
delete m_pAudioDriver;
m_pAudioDriver = nullptr;
m_MutexOutputPointer.unlock();
this->unlock();
return nullptr;
}
if ( pSong != nullptr && pHydrogen->hasJackAudioDriver() ) {
pHydrogen->renameJackPorts( pSong );
}
lock( RIGHT_HERE );
setupLadspaFX();
if ( pSong != nullptr ) {
handleDriverChange();
}
unlock();
EventQueue::get_instance()->push_event( EVENT_DRIVER_CHANGED, 0 );
return pAudioDriver;
}
void AudioEngine::startAudioDrivers()
{
AE_INFOLOG("");
const auto pPref = Preferences::get_instance();
if ( getState() != State::Initialized ) {
AE_ERRORLOG( QString( "Audio engine is not in State::Initialized but [%1]" )
.arg( static_cast<int>( getState() ) ) );
return;
}