diff options
Diffstat (limited to 'qmpmidiplay.cpp')
| -rw-r--r-- | qmpmidiplay.cpp | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/qmpmidiplay.cpp b/qmpmidiplay.cpp new file mode 100644 index 0000000..9760f81 --- /dev/null +++ b/qmpmidiplay.cpp @@ -0,0 +1,159 @@ +#include <cstdio> +#include <chrono> +#include <thread> +#include <fluidsynth.h> +#include "qmpmidiplay.hpp" +void CMidiPlayer::fluidInitialize(const char* sf) +{ + settings=new_fluid_settings(); + fluid_settings_setstr(settings,"audio.driver","pulseaudio"); + fluid_settings_setint(settings,"synth.cpu-cores",1); + fluid_settings_setint(settings,"synth.min-note-length",0); + fluid_settings_setint(settings,"synth.polyphony",256); + synth=new_fluid_synth(settings); + adriver=new_fluid_audio_driver(settings,synth); + fluid_synth_sfload(synth,sf,1); +} +void CMidiPlayer::fluidDeinitialize() +{ + if(!synth||!adriver||!settings)return; + delete_fluid_audio_driver(adriver); + delete_fluid_synth(synth); + delete_fluid_settings(settings); + synth=NULL;settings=NULL;adriver=NULL; +} +void CMidiPlayer::processEvent(const SEvent *e) +{ + switch(e->type&0xF0) + { + case 0x80://Note off + fluid_synth_noteoff(synth,e->type&0x0F,e->p1); + break; + case 0x90://Note on + fluid_synth_noteon(synth,e->type&0x0F,e->p1,e->p2); + break; + case 0xB0://CC + fluid_synth_cc(synth,e->type&0x0F,e->p1,e->p2); + break; + case 0xC0://PC + fluid_synth_program_change(synth,e->type&0x0F,e->p1); + break; + case 0xE0://PW + fluid_synth_pitch_bend(synth,e->type&0x0F,e->p1); + break; + case 0xF0://Meta/SysEx + if((e->type&0x0F)==0x0F) + { + switch(e->p1) + { + case 0x51: + ctempo=e->p2;dpt=ctempo*1000/divs; + break; + case 0x58: + break; + case 0x59: + break; + case 0x01:case 0x02:case 0x03: + case 0x04:case 0x05:case 0x06: + case 0x07: + if(e->str)puts(e->str); + break; + } + } + break; + } +} +void CMidiPlayer::processEventStub(const SEvent *e) +{ + if(e->type==0xFF&&e->p1==0x51) + {ctempo=e->p2;dpt=ctempo*1000/divs;} +} +void CMidiPlayer::playEvents() +{ + for(uint32_t ct=midiFile->getEvent(0)->time;tceptr<midiFile->getEventCount();) + { + while(tcpaused)std::this_thread::sleep_for(std::chrono::milliseconds(100)); + while(!tcstop&&tceptr<midiFile->getEventCount()&&ct==midiFile->getEvent(tceptr)->time) + processEvent(midiFile->getEvent(tceptr++)); + if(tcstop||tceptr>=midiFile->getEventCount())break; + if(resumed)resumed=false; + else + std::this_thread::sleep_for(std::chrono::nanoseconds(midiFile->getEvent(tceptr)->time-ct)*dpt); + ct=midiFile->getEvent(tceptr)->time; + } + while(!tcstop&&synth&&fluid_synth_get_active_voice_count(synth)>0)std::this_thread::sleep_for(std::chrono::microseconds(100)); + finished=1; +} +void CMidiPlayer::fileTimer1Pass() +{ + ftime=.0;ctempo=0x7A120;dpt=ctempo*1000/divs; + for(uint32_t eptr=0,ct=midiFile->getEvent(0)->time;eptr<midiFile->getEventCount();) + { + while(eptr<midiFile->getEventCount()&&ct==midiFile->getEvent(eptr)->time) + processEventStub(midiFile->getEvent(eptr++)); + if(eptr>=midiFile->getEventCount())break; + ftime+=(midiFile->getEvent(eptr)->time-ct)*dpt/1e9; + ct=midiFile->getEvent(eptr)->time; + } +} +void CMidiPlayer::fileTimer2Pass() +{ + memset(stamps,0,sizeof(stamps)); + double ctime=.0;uint32_t c=1;ctempo=0x7A120;dpt=ctempo*1000/divs; + for(uint32_t eptr=0,ct=midiFile->getEvent(0)->time;eptr<midiFile->getEventCount();) + { + while(eptr<midiFile->getEventCount()&&ct==midiFile->getEvent(eptr)->time) + processEventStub(midiFile->getEvent(eptr++)); + if(eptr>=midiFile->getEventCount())break; + ctime+=(midiFile->getEvent(eptr)->time-ct)*dpt/1e9; + while(ctime>ftime*c/100.){stamps[c++]=eptr;if(c>100)throw;} + ct=midiFile->getEvent(eptr)->time; + } + while(c<101)stamps[c++]=midiFile->getEventCount(); +} +CMidiPlayer::CMidiPlayer() +{ + midiFile=NULL;resumed=false; + settings=NULL;synth=NULL;adriver=NULL; +} +void CMidiPlayer::playerPanic() +{ + //for(int i=0;i<16;++i)fluid_synth_cc(synth,i,123,0);//not supported? + //fluid_synth_system_reset(synth);//reverts to default presets... + for(int i=0;i<16;++i)fluid_synth_all_notes_off(synth,i); + //for(int i=0;i<16;++i)for(int j=0;j<128;++j)fluid_synth_noteoff(synth,i,j); +} +void CMidiPlayer::playerLoadFile(const char* fn) +{ + midiFile=new CMidiFile(fn); + divs=midiFile->getDivision(); + fileTimer1Pass(); + fileTimer2Pass(); +} +void CMidiPlayer::playerInit() +{ + ctempo=0x7A120;ctsn=4;ctsd=2;dpt=ctempo*1000/divs; + tceptr=0;tcstop=0;tcpaused=0;finished=0; + fluidInitialize("/media/Files/FluidR3_Ext.sf2"); +} +void CMidiPlayer::playerDeinit() +{ + tceptr=0;tcstop=1;tcpaused=0; + fluidDeinitialize(); +} +void CMidiPlayer::playerThread() +{ + playEvents(); +} +uint32_t CMidiPlayer::getStamp(int id){return stamps[id];} +uint32_t CMidiPlayer::getTCeptr(){return tceptr;} +void CMidiPlayer::setTCeptr(uint32_t ep){tceptr=ep;} +double CMidiPlayer::getFtime(){return ftime;} +uint32_t CMidiPlayer::getTCpaused(){return tcpaused;} +void CMidiPlayer::setTCpaused(uint32_t ps){tcpaused=ps;} +uint32_t CMidiPlayer::isFinished(){return finished;} +void CMidiPlayer::setResumed(){resumed=true;} +void CMidiPlayer::setGain(double gain){if(settings)fluid_settings_setnum(settings,"synth.gain",gain);} +int CMidiPlayer::getPolyphone(){return synth?fluid_synth_get_active_voice_count(synth):0;} +int CMidiPlayer::getMaxPolyphone(){return synth?fluid_synth_get_polyphony(synth):0;} +void CMidiPlayer::setMaxPolyphone(int p){if(synth)fluid_synth_set_polyphony(synth,p);} |