From 2b46ba471830d4e6e22be5afc720adc2489efcfe Mon Sep 17 00:00:00 2001
From: Chris Xiong <chirs241097@gmail.com>
Date: Fri, 8 Apr 2016 23:49:24 +0800
Subject: the Awakening of the Evil.

---
 core/qmpmidiplay.cpp | 13 ++++++++++++-
 core/qmpmidiplay.hpp | 12 ++++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)

(limited to 'core')

diff --git a/core/qmpmidiplay.cpp b/core/qmpmidiplay.cpp
index e65a2a1..4ee812f 100644
--- a/core/qmpmidiplay.cpp
+++ b/core/qmpmidiplay.cpp
@@ -55,10 +55,12 @@ void CMidiPlayer::processEvent(const SEvent *e)
 		case 0x90://Note on
 			if((mute>>(e->type&0x0F))&1)break;//muted
 			if(solo&&!((solo>>(e->type&0x0F))&1))break;
+			if(noteOnCB)noteOnCB->callBack(noteOnCBUserData);
 			if(mappedoutput[e->type&0x0F])
 				mapper->noteOn(mappedoutput[e->type&0x0F]-1,e->type*0x0F,e->p1,e->p2);
 			else
 				fluid_synth_noteon(synth,e->type&0x0F,e->p1,e->p2);
+			chstate[e->type&0x0F]=1;
 		break;
 		case 0xB0://CC
 			if(e->p1==100)rpnid=e->p2;
@@ -182,15 +184,20 @@ 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));
+		using namespace std::chrono;
+		high_resolution_clock::time_point b=high_resolution_clock::now();
 		while(!tcstop&&midiFile&&tceptr<midiFile->getEventCount()&&ct==midiFile->getEvent(tceptr)->time)
 			processEvent(midiFile->getEvent(tceptr++));
 		if(tcstop||!midiFile||tceptr>=midiFile->getEventCount())break;
+		high_resolution_clock::time_point a=high_resolution_clock::now();
+		auto sendtime=a-b;
 		if(resumed)resumed=false;
 		else
+		if(sendtime.count()<(midiFile->getEvent(tceptr)->time-ct)*dpt)
 #if 0
 		w32usleep((midiFile->getEvent(tceptr)->time-ct)*(dpt/1000));
 #else
-		std::this_thread::sleep_for(std::chrono::nanoseconds(midiFile->getEvent(tceptr)->time-ct)*dpt);
+		std::this_thread::sleep_for(std::chrono::nanoseconds((midiFile->getEvent(tceptr)->time-ct)*dpt-sendtime.count()));
 #endif
 		if(tcstop||!midiFile)break;
 		ct=midiFile->getEvent(tceptr)->time;
@@ -251,6 +258,7 @@ CMidiPlayer::CMidiPlayer(bool singleInst)
 {
 	midiFile=NULL;resumed=false;singleInstance=singleInst;
 	settings=NULL;synth=NULL;adriver=NULL;waitvoice=true;
+	noteOnCB=NULL;noteOnCBUserData=NULL;
 	memset(mappedoutput,0,sizeof(mappedoutput));
 	memset(deviceusage,0,sizeof(deviceusage));
 	mapper=new qmpMidiMapperRtMidi();
@@ -444,3 +452,6 @@ void CMidiPlayer::setChannelOutput(int ch,int devid)
 		if(!deviceusage[origoutput-1])mapper->deviceDeinit(origoutput-1);
 	}
 }
+uint8_t* CMidiPlayer::getChstates(){return chstate;}
+void CMidiPlayer::setNoteOnCallBack(CMidiCallBack *cb,void *userdata)
+{noteOnCB=cb;noteOnCBUserData=userdata;}
diff --git a/core/qmpmidiplay.hpp b/core/qmpmidiplay.hpp
index a7e7f88..4592ea0 100644
--- a/core/qmpmidiplay.hpp
+++ b/core/qmpmidiplay.hpp
@@ -19,6 +19,13 @@ struct SEvent
 		if(s){str=new char[strlen(s)+2];strcpy(str,s);}else str=NULL;
 	}
 };
+class CMidiCallBack
+{
+	public:
+		CMidiCallBack(){}
+		virtual void callBack(void* data)=0;
+		virtual ~CMidiCallBack(){}
+};
 class CMidiFile
 {
 	private:
@@ -72,6 +79,9 @@ class CMidiPlayer
 		uint32_t finished,resumed;
 		qmpMidiMapperRtMidi *mapper;
 		int mappedoutput[16],deviceusage[16],deviceiid[128];
+		uint8_t chstate[16];
+		CMidiCallBack *noteOnCB;
+		void* noteOnCBUserData;
 
 		void setBit(uint16_t &n,uint16_t bn,uint16_t b);
 		void processEvent(const SEvent *e);
@@ -139,5 +149,7 @@ class CMidiPlayer
 
 		qmpMidiMapperRtMidi* getMidiMapper();
 		void setChannelOutput(int ch,int devid);
+		uint8_t* getChstates();
+		void setNoteOnCallBack(CMidiCallBack *cb,void *userdata);
 };
 #endif
-- 
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