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less arp data, step 2

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This commit is contained in:
Joachim Fenkes 2012-08-10 22:01:45 +02:00
parent 3ecbbc5ff4
commit d986b461e1
1 changed files with 15 additions and 1 deletions
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16
win/main.cpp
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@ -30,12 +30,21 @@ int arpeggio[][4] = {
#define ARPSIZE 76
#if 0
uint8_t arpseq1[4][8] = {
{ 0, 0, 1, 2, 0, 0, 6, 2, },
{ 0, 0, 1, 2, 0, 0, 1, 7, },
{ 0, 0, 1, 2, 0, 0, 1, 2, },
{ 3, 3, 2, 2, 0, 0, 4, 5, },
};
#else
uint8_t arpseq1[4][4] = {
{ 0x00, 0x12, 0x00, 0x62 },
{ 0x00, 0x12, 0x00, 0x17 },
{ 0x00, 0x12, 0x00, 0x12 },
{ 0x33, 0x22, 0x00, 0x45 },
};
#endif
int arpseq2[] = { 0, 1, 0, 1, 0, 1, 0, 2, 3, 3 };
//int arptiming[32] = { 4, 2, 4, 2, 4, 2, 4, 5, 1, 2, 2 }
const uint32_t arptiming = B32(00001100,00110000,11111011,00001100);
@ -113,7 +122,12 @@ static inline unsigned char voice_arp(unsigned long i)
{
static uint16_t arp_osc = 0;
uint8_t arpptr = i >> 13;
int note = notes[arpeggio[arpseq1[arpptr >> 3][arpptr & 7]][(i >> 7) & 3]];
uint8_t arpptr2 = arpseq1[arpseq2[arpptr >> 3]][(arpptr >> 1) & 3];
if (arpptr & 1)
arpptr2 &= 0xF;
else
arpptr2 >>= 4;
int note = notes[arpeggio[arpptr2][(i >> 7) & 3]];
arp_osc += note;
return ((arptiming & (1 << (31 - (i >> 9)))) && (arp_osc & (1 << 12)) && ((i >> 13) > 15)) ? 0 : 140;
//return ((arp_osc >> 5) & 128) - 1;