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-rw-r--r--qmpmidiplay.cpp159
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);}