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Some shifting optimizations. Working code. 50% realtime.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6323 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Stepan Moskovchenko 2005-04-19 15:57:07 +00:00
parent c3d0a229cc
commit 1f5fb99819
6 changed files with 238 additions and 201 deletions
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31
apps/plugins/midi/sequencer.c
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@ -88,9 +88,30 @@ void setPW(int ch, int msb)
void pressNote(int ch, int note, int vol)
{
/*
if(ch == 0) return;
// if(ch == 1) return;
if(ch == 2) return;
if(ch == 3) return;
if(ch == 4) return;
if(ch == 5) return;
if(ch == 6) return;
if(ch == 7) return;
if(ch == 8) return;
if(ch == 9) return;
if(ch == 10) return;
if(ch == 11) return;
if(ch == 12) return;
if(ch == 13) return;
if(ch == 14) return;
if(ch == 15) return;
*/
int a=0;
for(a=0; a<MAX_VOICES; a++)
{
if(voices[a].ch == ch && voices[a].note == note)
break;
if(voices[a].isUsed==0)
break;
}
@ -107,7 +128,7 @@ void pressNote(int ch, int note, int vol)
voices[a].vol=vol;
voices[a].cp=0;
voices[a].state=STATE_ATTACK;
voices[a].pstate=STATE_ATTACK;
// voices[a].pstate=STATE_ATTACK;
voices[a].decay=255;
@ -170,15 +191,12 @@ void releaseNote(int ch, int note)
{
if(voices[a].ch == ch && voices[a].note == note)
{
//voices[a].isUsed=0;
if((voices[a].wf->mode & 28))
{
voices[a].tmp=40;
// voices[a].tmp=40;
// voices[a].state = STATE_RELEASE; //Ramp down
// voices[a].state = STATE_RAMPDOWN; //Ramp down
// voices[a].isUsed = 0;
setPoint(&voices[a], 3);
}
}
@ -281,6 +299,9 @@ int tick(struct MIDIfile * mf)
{
tempo = (((short)e->evData[0])<<16)|(((short)e->evData[1])<<8)|(e->evData[2]);
printf("\nMeta-Event: Tempo Set = %d", tempo);
bpm=mf->div*1000000/tempo;
numberOfSamples=SAMPLE_RATE/bpm;
}
}
tr->delta = 0;