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amuse
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Initial SongState, timing is hilariously wrong ATM

This commit is contained in:
Jack Andersen 2016-05-18 16:19:43 -10:00
parent aedbc72766
commit 3433a70462
10 changed files with 648 additions and 60 deletions
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2
CMakeLists.txt
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@ -10,6 +10,7 @@ set(SOURCES
lib/Listener.cpp
lib/Sequencer.cpp
lib/SoundMacroState.cpp
lib/SongState.cpp
lib/Voice.cpp
lib/Submix.cpp
lib/EffectBase.cpp
@ -32,6 +33,7 @@ set(HEADERS
include/amuse/Listener.hpp
include/amuse/Sequencer.hpp
include/amuse/SoundMacroState.hpp
include/amuse/SongState.hpp
include/amuse/Voice.hpp
include/amuse/Submix.hpp
include/amuse/IBackendSubmix.hpp

62
driver/main.cpp
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@ -157,7 +157,7 @@ struct AppCallback : boo::IApplicationCallback
/* Amuse engine */
std::experimental::optional<amuse::Engine> m_engine;
int m_groupId;
int m_groupId = -1;
bool m_sfxGroup;
/* Song playback selection */
@ -166,6 +166,7 @@ struct AppCallback : boo::IApplicationCallback
int8_t m_octave = 4;
int8_t m_velocity = 64;
std::shared_ptr<amuse::Sequencer> m_seq;
std::unique_ptr<uint8_t[]> m_arrData;
/* SFX playback selection */
int m_sfxId = -1;
@ -204,6 +205,10 @@ struct AppCallback : boo::IApplicationCallback
m_seq->allOff();
m_seq = m_engine->seqPlay(m_groupId, setupId, nullptr);
m_seq->setVolume(m_volume);
if (m_arrData)
m_seq->playSong(m_arrData.get(), false);
UpdateSongDisplay();
}
@ -225,7 +230,18 @@ struct AppCallback : boo::IApplicationCallback
(index.m_midiSetups.cbegin(), index.m_midiSetups.cend());
auto setupIt = sortEntries.cbegin();
if (setupIt != sortEntries.cend())
SelectSong(setupIt->first);
{
if (m_setupId == -1)
SelectSong(setupIt->first);
else
{
while (setupIt != sortEntries.cend() && setupIt->first != m_setupId)
++setupIt;
if (setupIt == sortEntries.cend())
setupIt = sortEntries.cbegin();
SelectSong(setupIt->first);
}
}
while (m_running)
{
@ -273,7 +289,7 @@ struct AppCallback : boo::IApplicationCallback
UpdateSongDisplay();
}
m_engine->pumpEngine();
m_engine->pumpEngine(1.0 / 60.0);
size_t voxCount;
if (m_seq)
@ -359,7 +375,7 @@ struct AppCallback : boo::IApplicationCallback
UpdateSFXDisplay();
}
m_engine->pumpEngine();
m_engine->pumpEngine(1.0 / 60.0);
if (m_vox && m_vox->state() == amuse::VoiceState::Dead)
{
@ -411,6 +427,7 @@ struct AppCallback : boo::IApplicationCallback
m_seq->nextChanProgram(m_chanId);
m_updateDisp = true;
break;
default: break;
}
}
}
@ -640,12 +657,47 @@ struct AppCallback : boo::IApplicationCallback
Log.report(logvisor::Fatal, "incomplete data in args");
Log.report(logvisor::Info, "Found '%s' Audio Group data", desc.c_str());
/* Attempt loading song */
if (m_argc > 2)
{
std::experimental::optional<athena::io::FileReader> r;
r.emplace(m_argv[m_argc-1], 32 * 1024, false);
if (!r->hasError())
{
uint32_t version = r->readUint32Big();
if (version == 0x18)
{
/* Raw SON data */
r->seek(0, athena::SeekOrigin::Begin);
m_arrData = r->readUBytes(r->length());
}
else if (version == 0x2)
{
/* Retro CSNG data */
m_setupId = r->readUint32Big();
m_groupId = r->readUint32Big();
r->readUint32Big();
uint32_t sonLength = r->readUint32Big();
m_arrData = r->readUBytes(sonLength);
}
}
}
/* Load project to assemble group list */
amuse::AudioGroupProject proj(data.getProj());
/* Get group selection from user */
size_t totalGroups = proj.sfxGroups().size() + proj.songGroups().size();
if (totalGroups > 1)
if (m_groupId != -1)
{
if (proj.getSongGroupIndex(m_groupId))
m_sfxGroup = false;
else if (proj.getSFXGroupIndex(m_groupId))
m_sfxGroup = true;
else
Log.report(logvisor::Fatal, "unable to find Group %d", m_groupId);
}
else if (totalGroups > 1)
{
/* Ask user to specify which group in project */
printf("Multiple Audio Groups discovered:\n");

2
include/amuse/Engine.hpp
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@ -58,7 +58,7 @@ public:
IBackendVoiceAllocator& getBackend() {return m_backend;}
/** Update all active audio entities and fill OS audio buffers as needed */
void pumpEngine();
void pumpEngine(double dt);
/** Add audio group data pointers to engine; must remain resident! */
const AudioGroup* addAudioGroup(const AudioGroupData& data);

11
include/amuse/Sequencer.hpp
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@ -3,6 +3,8 @@
#include "Entity.hpp"
#include "AudioGroupProject.hpp"
#include "SongState.hpp"
#include "optional.hpp"
#include <unordered_map>
#include <unordered_set>
#include <memory>
@ -30,6 +32,7 @@ class Sequencer : public Entity
std::list<std::shared_ptr<Sequencer>>::iterator m_engineIt; /**< Iterator to self within Engine's list for quick deletion */
const unsigned char* m_arrData = nullptr; /**< Current playing arrangement data */
SongState m_songState; /**< State of current arrangement playback */
double m_ticksPerSec = 1000.0; /**< Current ticks per second (tempo) for arrangement data */
SequencerState m_state = SequencerState::Interactive; /**< Current high-level state of sequencer */
bool m_dieOnEnd = false; /**< Sequencer will be killed when current arrangement completes */
@ -53,6 +56,8 @@ class Sequencer : public Entity
int8_t m_ctrlVals[128]; /**< MIDI controller values */
float m_curPitchWheel = 0.f; /**< MIDI pitch-wheel */
int8_t m_curProgram = 0; /**< MIDI program number */
float m_curVol = 1.f; /**< Current volume of channel */
float m_curPan = 0.f; /**< Current panning of channel */
void _bringOutYourDead();
size_t getVoiceCount() const;
@ -64,12 +69,13 @@ class Sequencer : public Entity
void prevProgram();
void setPitchWheel(float pitchWheel);
void setVolume(float vol);
void setPan(float pan);
void allOff();
void killKeygroup(uint8_t kg, bool now);
std::shared_ptr<Voice> findVoice(int vid);
void sendMacroMessage(ObjectId macroId, int32_t val);
};
std::unordered_map<uint8_t, std::unique_ptr<ChannelState>> m_chanStates; /**< Lazily-allocated channel states */
std::array<std::experimental::optional<ChannelState>, 16> m_chanStates; /**< Lazily-allocated channel states */
void _bringOutYourDead();
void _destroy();
@ -78,6 +84,9 @@ public:
Sequencer(Engine& engine, const AudioGroup& group, int groupId,
const SongGroupIndex& songGroup, int setupId, Submix* smx);
/** Advance current song data (if any) */
void advance(double dt);
/** Obtain pointer to Sequencer's Submix */
Submix* getSubmix() {return m_submix;}

114
include/amuse/SongState.hpp Normal file
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@ -0,0 +1,114 @@
#ifndef __AMUSE_SONGSTATE_HPP__
#define __AMUSE_SONGSTATE_HPP__
#include <stdint.h>
#include <vector>
#include <list>
#include "optional.hpp"
#include "Entity.hpp"
namespace amuse
{
class Sequencer;
enum class SongPlayState
{
Stopped,
Playing
};
/** Indexes and temporally plays back commands stored in Song data blobs */
class SongState
{
friend class Voice;
/** Song header */
struct Header
{
uint32_t m_version;
uint32_t m_chanIdxOff;
uint32_t m_chanMapOff;
uint32_t m_tempoTableOff;
uint32_t m_initialTempo;
uint32_t m_unkOff;
uint32_t m_chanOffs[64];
void swapBig();
} m_header;
/** Channel header */
struct ChanHeader
{
uint32_t m_startTick;
uint16_t m_unk1;
uint16_t m_unk2;
uint16_t m_dataIndex;
uint16_t m_unk3;
uint32_t m_startTick2;
uint16_t m_unk4;
uint16_t m_unk5;
uint16_t m_unk6;
uint16_t m_unk7;
void swapBig();
};
/** Tempo change entry */
struct TempoChange
{
uint32_t m_tick; /**< Relative song ticks from previous tempo change */
uint32_t m_tempo; /**< Tempo value in beats-per-minute (at 384 ticks per quarter-note) */
void swapBig();
};
/** State of a single channel within arrangement */
struct Channel
{
struct Header
{
uint32_t m_type;
uint32_t m_pitchOff;
uint32_t m_modOff;
void swapBig();
};
SongState& m_parent;
uint8_t m_midiChan; /**< MIDI channel number of song channel */
uint32_t m_startTick; /**< Tick to start execution of channel commands */
const unsigned char* m_dataBase; /**< Base pointer to command data */
const unsigned char* m_data; /**< Pointer to upcoming command data */
const unsigned char* m_pitchWheelData = nullptr; /**< Pointer to upcoming pitch data */
const unsigned char* m_modWheelData = nullptr; /**< Pointer to upcoming modulation data */
uint32_t m_lastPitchTick = 0; /**< Last position of pitch wheel change */
int32_t m_lastPitchVal = 0; /**< Last value of pitch */
uint32_t m_lastModTick = 0; /**< Last position of mod wheel change */
int32_t m_lastModVal = 0; /**< Last value of mod */
std::array<uint16_t, 128> m_remNoteLengths = {}; /**< Remaining ticks per note */
int32_t m_waitCountdown = 0; /**< Current wait in ticks */
Channel(SongState& parent, uint8_t midiChan, uint32_t startTick,
const unsigned char* song, const unsigned char* chan);
bool advance(Sequencer& seq, int32_t ticks);
};
std::array<std::experimental::optional<Channel>, 64> m_channels;
/** Current pointer to tempo control, iterated over playback */
const TempoChange* m_tempoPtr = nullptr;
uint32_t m_tempo = 120; /**< Current tempo (beats per minute) */
uint32_t m_curTick = 0; /**< Current playback position for all channels */
SongPlayState m_songState = SongPlayState::Playing; /**< High-level state of Song playback */
public:
/** initialize state for Song data at `ptr` */
void initialize(const unsigned char* ptr);
/** advances `dt` seconds worth of commands in the Song
* @return `true` if END reached
*/
bool advance(Sequencer& seq, double dt);
};
}
#endif // __AMUSE_SONGSTATE_HPP__

5
lib/Engine.cpp
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@ -153,8 +153,11 @@ void Engine::_bringOutYourDead()
}
/** Update all active audio entities and fill OS audio buffers as needed */
void Engine::pumpEngine()
void Engine::pumpEngine(double dt)
{
for (std::shared_ptr<Sequencer>& seq : m_activeSequencers)
seq->advance(dt);
m_backend.pumpAndMixVoices();
_bringOutYourDead();

161
lib/Sequencer.cpp
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@ -36,7 +36,8 @@ void Sequencer::ChannelState::_bringOutYourDead()
void Sequencer::_bringOutYourDead()
{
for (auto& chan : m_chanStates)
chan.second->_bringOutYourDead();
if (chan)
chan->_bringOutYourDead();
if (!m_arrData && m_dieOnEnd && getVoiceCount() == 0)
m_state = SequencerState::Dead;
@ -53,11 +54,13 @@ void Sequencer::_destroy()
for (auto& chan : m_chanStates)
{
ChannelState& st = *chan.second;
if (st.m_submix)
if (chan)
{
m_engine.removeSubmix(st.m_submix);
st.m_submix = nullptr;
if (chan->m_submix)
{
m_engine.removeSubmix(chan->m_submix);
chan->m_submix = nullptr;
}
}
}
}
@ -100,6 +103,20 @@ Sequencer::ChannelState::ChannelState(Sequencer& parent, uint8_t chanId)
m_submix->makeReverbStd(0.5f, m_setup.reverb / 127.f, 5.f, 0.5f, 0.f);
if (m_setup.chorus)
m_submix->makeChorus(15, m_setup.chorus * 5 / 127, 5000);
m_curVol = m_setup.volume / 127.f;
m_curPan = m_setup.panning / 64.f - 1.f;
}
void Sequencer::advance(double dt)
{
if (m_state == SequencerState::Playing)
if (m_songState.advance(*this, dt))
{
m_arrData = nullptr;
m_state = SequencerState::Interactive;
allOff();
}
}
size_t Sequencer::ChannelState::getVoiceCount() const
@ -116,7 +133,8 @@ size_t Sequencer::getVoiceCount() const
{
size_t ret = 0;
for (const auto& chan : m_chanStates)
ret += chan.second->getVoiceCount();
if (chan)
ret += chan->getVoiceCount();
return ret;
}
@ -135,8 +153,8 @@ std::shared_ptr<Voice> Sequencer::ChannelState::keyOn(uint8_t note, uint8_t velo
m_parent.m_engine._destroyVoice(ret.get());
return {};
}
ret->setVolume(m_parent.m_curVol * m_setup.volume / 127.f);
ret->setPan(m_setup.panning / 64.f - 127.f);
ret->setVolume(m_parent.m_curVol * m_curVol);
ret->setPan(m_curPan);
ret->setPitchWheel(m_curPitchWheel);
if (m_ctrlVals[64] > 64)
@ -147,14 +165,13 @@ std::shared_ptr<Voice> Sequencer::ChannelState::keyOn(uint8_t note, uint8_t velo
std::shared_ptr<Voice> Sequencer::keyOn(uint8_t chan, uint8_t note, uint8_t velocity)
{
auto chanSearch = m_chanStates.find(chan);
if (chanSearch == m_chanStates.cend())
{
auto it = m_chanStates.emplace(std::make_pair(chan, std::make_unique<ChannelState>(*this, chan)));
return it.first->second->keyOn(note, velocity);
}
if (chan > 15)
return {};
return chanSearch->second->keyOn(note, velocity);
if (!m_chanStates[chan])
m_chanStates[chan].emplace(*this, chan);
return m_chanStates[chan]->keyOn(note, velocity);
}
void Sequencer::ChannelState::keyOff(uint8_t note, uint8_t velocity)
@ -170,11 +187,10 @@ void Sequencer::ChannelState::keyOff(uint8_t note, uint8_t velocity)
void Sequencer::keyOff(uint8_t chan, uint8_t note, uint8_t velocity)
{
auto chanSearch = m_chanStates.find(chan);
if (chanSearch == m_chanStates.cend())
if (chan > 15 || !m_chanStates[chan])
return;
chanSearch->second->keyOff(note, velocity);
m_chanStates[chan]->keyOff(note, velocity);
}
void Sequencer::ChannelState::setCtrlValue(uint8_t ctrl, int8_t val)
@ -184,6 +200,11 @@ void Sequencer::ChannelState::setCtrlValue(uint8_t ctrl, int8_t val)
vox.second->notifyCtrlChange(ctrl, val);
for (const auto& vox : m_keyoffVoxs)
vox->notifyCtrlChange(ctrl, val);
if (ctrl == 7)
setVolume(val / 127.f);
else if (ctrl == 8)
setPan(val / 64.f - 1.f);
}
bool Sequencer::ChannelState::programChange(int8_t prog)
@ -229,11 +250,13 @@ void Sequencer::ChannelState::prevProgram()
void Sequencer::setCtrlValue(uint8_t chan, uint8_t ctrl, int8_t val)
{
auto chanSearch = m_chanStates.find(chan);
if (chanSearch == m_chanStates.cend())
if (chan > 15)
return;
chanSearch->second->setCtrlValue(ctrl, val);
if (!m_chanStates[chan])
m_chanStates[chan].emplace(*this, chan);
m_chanStates[chan]->setCtrlValue(ctrl, val);
}
void Sequencer::ChannelState::setPitchWheel(float pitchWheel)
@ -247,11 +270,13 @@ void Sequencer::ChannelState::setPitchWheel(float pitchWheel)
void Sequencer::setPitchWheel(uint8_t chan, float pitchWheel)
{
auto chanSearch = m_chanStates.find(chan);
if (chanSearch == m_chanStates.cend())
if (chan > 15)
return;
chanSearch->second->setPitchWheel(pitchWheel);
if (!m_chanStates[chan])
m_chanStates[chan].emplace(*this, chan);
m_chanStates[chan]->setPitchWheel(pitchWheel);
}
void Sequencer::setTempo(double ticksPerSec)
@ -270,16 +295,20 @@ void Sequencer::allOff(bool now)
if (now)
for (auto& chan : m_chanStates)
{
for (const auto& vox : chan.second->m_chanVoxs)
m_engine._destroyVoice(vox.second.get());
for (const auto& vox : chan.second->m_keyoffVoxs)
m_engine._destroyVoice(vox.get());
chan.second->m_chanVoxs.clear();
chan.second->m_keyoffVoxs.clear();
if (chan)
{
for (const auto& vox : chan->m_chanVoxs)
m_engine._destroyVoice(vox.second.get());
for (const auto& vox : chan->m_keyoffVoxs)
m_engine._destroyVoice(vox.get());
chan->m_chanVoxs.clear();
chan->m_keyoffVoxs.clear();
}
}
else
for (auto& chan : m_chanStates)
chan.second->allOff();
if (chan)
chan->allOff();
}
void Sequencer::ChannelState::killKeygroup(uint8_t kg, bool now)
@ -317,7 +346,8 @@ void Sequencer::ChannelState::killKeygroup(uint8_t kg, bool now)
void Sequencer::killKeygroup(uint8_t kg, bool now)
{
for (auto& chan : m_chanStates)
chan.second->killKeygroup(kg, now);
if (chan)
chan->killKeygroup(kg, now);
}
std::shared_ptr<Voice> Sequencer::ChannelState::findVoice(int vid)
@ -335,9 +365,12 @@ std::shared_ptr<Voice> Sequencer::findVoice(int vid)
{
for (auto& chan : m_chanStates)
{
std::shared_ptr<Voice> ret = chan.second->findVoice(vid);
if (ret)
return ret;
if (chan)
{
std::shared_ptr<Voice> ret = chan->findVoice(vid);
if (ret)
return ret;
}
}
return {};
}
@ -361,28 +394,46 @@ void Sequencer::ChannelState::sendMacroMessage(ObjectId macroId, int32_t val)
void Sequencer::sendMacroMessage(ObjectId macroId, int32_t val)
{
for (auto& chan : m_chanStates)
chan.second->sendMacroMessage(macroId, val);
if (chan)
chan->sendMacroMessage(macroId, val);
}
void Sequencer::playSong(const unsigned char* arrData, bool dieOnEnd)
{
m_arrData = arrData;
m_dieOnEnd = dieOnEnd;
m_songState.initialize(arrData);
m_state = SequencerState::Playing;
}
void Sequencer::ChannelState::setVolume(float vol)
{
vol = vol * m_setup.volume / 127.f;
m_curVol = vol;
float voxVol = m_parent.m_curVol * m_curVol;
for (const auto& v : m_chanVoxs)
{
Voice* vox = v.second.get();
vox->setVolume(vol);
vox->setVolume(voxVol);
}
for (const auto& v : m_keyoffVoxs)
{
Voice* vox = v.get();
vox->setVolume(vol);
vox->setVolume(voxVol);
}
}
void Sequencer::ChannelState::setPan(float pan)
{
m_curPan = pan;
for (const auto& v : m_chanVoxs)
{
Voice* vox = v.second.get();
vox->setPan(m_curPan);
}
for (const auto& v : m_keyoffVoxs)
{
Voice* vox = v.get();
vox->setPan(m_curPan);
}
}
@ -390,43 +441,49 @@ void Sequencer::setVolume(float vol)
{
m_curVol = vol;
for (auto& chan : m_chanStates)
chan.second->setVolume(vol);
if (chan)
chan->setVolume(chan->m_curVol);
}
int8_t Sequencer::getChanProgram(int8_t chanId) const
{
auto chanSearch = m_chanStates.find(chanId);
if (chanSearch == m_chanStates.cend())
if (chanId > 15 || !m_chanStates[chanId])
return 0;
return chanSearch->second->m_curProgram;
return m_chanStates[chanId]->m_curProgram;
}
bool Sequencer::setChanProgram(int8_t chanId, int8_t prog)
{
auto chanSearch = m_chanStates.find(chanId);
if (chanSearch == m_chanStates.cend())
if (chanId > 15)
return false;
return chanSearch->second->programChange(prog);
if (!m_chanStates[chanId])
m_chanStates[chanId].emplace(*this, chanId);
return m_chanStates[chanId]->programChange(prog);
}
void Sequencer::nextChanProgram(int8_t chanId)
{
auto chanSearch = m_chanStates.find(chanId);
if (chanSearch == m_chanStates.cend())
if (chanId > 15)
return;
return chanSearch->second->nextProgram();
if (!m_chanStates[chanId])
m_chanStates[chanId].emplace(*this, chanId);
return m_chanStates[chanId]->nextProgram();
}
void Sequencer::prevChanProgram(int8_t chanId)
{
auto chanSearch = m_chanStates.find(chanId);
if (chanSearch == m_chanStates.cend())
if (chanId > 15)
return;
return chanSearch->second->prevProgram();
if (!m_chanStates[chanId])
m_chanStates[chanId].emplace(*this, chanId);
return m_chanStates[chanId]->prevProgram();
}
}

348
lib/SongState.cpp Normal file
View File

@ -0,0 +1,348 @@
#include "amuse/SongState.hpp"
#include "amuse/Common.hpp"
#include "amuse/Sequencer.hpp"
namespace amuse
{
static uint32_t DecodeRLE(const unsigned char*& data)
{
uint32_t ret = 0;
while (true)
{
uint32_t thisPart = *data & 0x7f;
if (*data & 0x80)
{
++data;
thisPart = thisPart * 256 + *data;
if (thisPart == 0)
return -1;
}
if (thisPart == 32767)
{
ret += 32767;
data += 2;
continue;
}
ret += thisPart;
data += 1;
break;
}
return ret;
}
static int32_t DecodeContinuousRLE(const unsigned char*& data)
{
int32_t ret = int32_t(DecodeRLE(data));
if (ret >= 16384)
return ret - 32767;
return ret;
}
static uint32_t DecodeTimeRLE(const unsigned char*& data)
{
uint32_t ret = 0;
while (true)
{
uint16_t thisPart = SBig(*reinterpret_cast<const uint16_t*>(data));
if (thisPart == 0xffff)
{
ret += 65535;
data += 4;
continue;
}
ret += thisPart;
data += 2;
break;
}
return ret;
}
void SongState::Header::swapBig()
{
m_version = SBig(m_version);
m_chanIdxOff = SBig(m_chanIdxOff);
m_chanMapOff = SBig(m_chanMapOff);
m_tempoTableOff = SBig(m_tempoTableOff);
m_initialTempo = SBig(m_initialTempo);
m_unkOff = SBig(m_unkOff);
for (int i=0 ; i<64 ; ++i)
m_chanOffs[i] = SBig(m_chanOffs[i]);
}
void SongState::ChanHeader::swapBig()
{
m_startTick = SBig(m_startTick);
m_unk1 = SBig(m_unk1);
m_unk2 = SBig(m_unk2);
m_dataIndex = SBig(m_dataIndex);
m_unk3 = SBig(m_unk3);
m_startTick2 = SBig(m_startTick2);
m_unk4 = SBig(m_unk4);
m_unk5 = SBig(m_unk5);
m_unk6 = SBig(m_unk6);
m_unk7 = SBig(m_unk7);
}
void SongState::TempoChange::swapBig()
{
m_tick = SBig(m_tick);
m_tempo = SBig(m_tempo);
}
void SongState::Channel::Header::swapBig()
{
m_type = SBig(m_type);
m_pitchOff = SBig(m_pitchOff);
m_modOff = SBig(m_modOff);
}
SongState::Channel::Channel(SongState& parent, uint8_t midiChan, uint32_t startTick,
const unsigned char* song, const unsigned char* chan)
: m_parent(parent), m_midiChan(midiChan), m_startTick(startTick), m_dataBase(chan + 12)
{
m_data = m_dataBase;
Header header = *reinterpret_cast<const Header*>(chan);
header.swapBig();
if (header.m_type != 8)
{
m_data = nullptr;
return;
}
if (header.m_pitchOff)
m_pitchWheelData = song + header.m_pitchOff;
if (header.m_modOff)
m_modWheelData = song + header.m_modOff;
m_waitCountdown = startTick;
}
void SongState::initialize(const unsigned char* ptr)
{
m_header = *reinterpret_cast<const Header*>(ptr);
m_header.swapBig();
/* Initialize all channels */
for (int i=0 ; i<64 ; ++i)
{
if (m_header.m_chanOffs[i])
{
ChanHeader cHeader = *reinterpret_cast<const ChanHeader*>(ptr + m_header.m_chanOffs[i]);
cHeader.swapBig();
const uint32_t* chanIdx = reinterpret_cast<const uint32_t*>(ptr + m_header.m_chanIdxOff);
const uint8_t* chanMap = reinterpret_cast<const uint8_t*>(ptr + m_header.m_chanMapOff);
m_channels[i].emplace(*this, chanMap[i], cHeader.m_startTick, ptr,
ptr + SBig(chanIdx[cHeader.m_dataIndex]));
}
else
m_channels[i] = std::experimental::nullopt;
}
/* Initialize tempo */
if (m_header.m_tempoTableOff)
m_tempoPtr = reinterpret_cast<const TempoChange*>(ptr + m_header.m_tempoTableOff);
else
m_tempoPtr = nullptr;
m_tempo = m_header.m_initialTempo;
m_curTick = 0;
m_songState = SongPlayState::Playing;
}
bool SongState::Channel::advance(Sequencer& seq, int32_t ticks)
{
if (!m_data)
return true;
int32_t endTick = m_parent.m_curTick + ticks;
/* Update continuous pitch data */
if (m_pitchWheelData)
{
int32_t pitchTick = m_parent.m_curTick;
int32_t remPitchTicks = ticks;
while (pitchTick < endTick)
{
/* See if there's an upcoming pitch change in this interval */
const unsigned char* ptr = m_pitchWheelData;
uint32_t deltaTicks = DecodeRLE(ptr);
if (deltaTicks != -1)
{
uint32_t nextTick = m_lastPitchTick + deltaTicks;
if (pitchTick + remPitchTicks > nextTick)
{
/* Update pitch */
int32_t pitchDelta = DecodeContinuousRLE(ptr);
m_lastPitchVal += pitchDelta;
m_pitchWheelData = ptr;
m_lastPitchTick = nextTick;
remPitchTicks -= (nextTick - pitchTick);
pitchTick = nextTick;
seq.setPitchWheel(m_midiChan, clamp(-1.f, m_lastPitchVal / 8192.f, 1.f));
continue;
}
remPitchTicks -= (nextTick - pitchTick);
pitchTick = nextTick;
}
else
break;
}
}
/* Update continuous modulation data */
if (m_modWheelData)
{
int32_t modTick = m_parent.m_curTick;
int32_t remModTicks = ticks;
while (modTick < endTick)
{
/* See if there's an upcoming modulation change in this interval */
const unsigned char* ptr = m_modWheelData;
uint32_t deltaTicks = DecodeRLE(ptr);
if (deltaTicks != -1)
{
uint32_t nextTick = m_lastModTick + deltaTicks;
if (modTick + remModTicks > nextTick)
{
/* Update modulation */
int32_t modDelta = DecodeContinuousRLE(ptr);
m_lastModVal += modDelta;
m_modWheelData = ptr;
m_lastModTick = nextTick;
remModTicks -= (nextTick - modTick);
modTick = nextTick;
seq.setCtrlValue(m_midiChan, 1, clamp(0, (m_lastModVal + 8192) * 128 / 16384, 127));
continue;
}
remModTicks -= (nextTick - modTick);
modTick = nextTick;
}
else
break;
}
}
/* Stop finished notes */
for (int i=0 ; i<128 ; ++i)
{
if (m_remNoteLengths[i])
{
if (m_remNoteLengths[i] <= ticks)
{
seq.keyOff(m_midiChan, i, 0);
m_remNoteLengths[i] = 0;
}
else
m_remNoteLengths[i] -= ticks;
}
}
/* Bootstrap first delta-time */
if (m_data == m_dataBase)
m_waitCountdown = DecodeTimeRLE(m_data);
/* Loop through as many commands as we can for this time period */
while (true)
{
/* Advance wait timer if active, returning if waiting */
if (m_waitCountdown)
{
m_waitCountdown -= ticks;
if (m_waitCountdown <= 0)
m_waitCountdown = 0;
else
return false;
}
/* Load next command */
if (*reinterpret_cast<const uint16_t*>(m_data) == 0xffff)
{
/* End of channel */
m_data = nullptr;
return true;
}
else if (m_data[0] & 0x80)
{
/* Control change */
uint8_t val = m_data[0] & 0x7f;
uint8_t ctrl = m_data[1] & 0x7f;
seq.setCtrlValue(m_midiChan, ctrl, val);
m_data += 2;
}
else
{
/* Note */
uint8_t note = m_data[0] & 0x7f;
uint8_t vel = m_data[1] & 0x7f;
uint16_t length = SBig(*reinterpret_cast<const uint16_t*>(m_data + 2));
seq.keyOn(m_midiChan, note, vel);
m_remNoteLengths[note] = length;
m_data += 4;
}
/* Set next delta-time */
m_waitCountdown = DecodeTimeRLE(m_data);
}
return false;
}
bool SongState::advance(Sequencer& seq, double dt)
{
/* Stopped */
if (m_songState == SongPlayState::Stopped)
return true;
bool done = true;
while (dt > 0.0)
{
/* Compute ticks to compute based on current tempo */
int32_t remTicks = dt * m_tempo * 384 / 60;
if (!remTicks) remTicks = 1;
/* See if there's an upcoming tempo change in this interval */
if (m_tempoPtr && m_tempoPtr->m_tick != 0xffffffff)
{
TempoChange change = *m_tempoPtr;
change.swapBig();
if (m_curTick + remTicks > change.m_tick)
remTicks = change.m_tick - m_curTick;
if (remTicks <= 0)
{
/* Turn over tempo */
m_tempo = change.m_tempo;
++m_tempoPtr;
continue;
}
}
/* Advance all channels */
for (std::experimental::optional<Channel>& chan : m_channels)
if (chan)
done &= chan->advance(seq, remTicks);
m_curTick += remTicks;
if (m_tempo == 0)
dt = 0.0;
else
dt -= remTicks / double(m_tempo * 384 / 60);
}
if (done)
m_songState = SongPlayState::Stopped;
return done;
}
}

1
lib/Submix.cpp
View File

@ -6,6 +6,7 @@ namespace amuse
void Submix::_destroy()
{
m_destroyed = true;
m_backendSubmix.reset();
}
Submix::Submix(Engine& engine, Submix* smx)

2
lib/Voice.cpp
View File

@ -18,6 +18,8 @@ void Voice::_destroy()
for (std::shared_ptr<Voice>& vox : m_childVoices)
vox->_destroy();
m_backendVoice.reset();
}
Voice::~Voice()