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add lead, needs work

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This commit is contained in:
Joachim Fenkes 2012-08-04 17:27:02 +02:00
parent c1754c7fcf
commit 031ce7bdb4
1 changed files with 31 additions and 5 deletions
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36
win/main.cpp
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@ -5,7 +5,8 @@
#include <Windows.h> #include <Windows.h>
#include <MMSystem.h> #include <MMSystem.h>
int notes[16] = { 122, 115, 109, 103, 97, 92, 86, 82, 77, 73, 69, 65, 61, 58, 54, 51 }; int notes[25] = { 134, 142, 150, 159, 169, 179, 189, 201, 213, 225, 239, 253, 268, 284, 301, 319, 338, 358, 379, 401, 425, 451, 477, 506, 536 };
int arpeggio[][4] = { int arpeggio[][4] = {
{ 0, 3, 7, 12 }, { 0, 3, 7, 12 },
{ 2, 5, 7, 10 }, { 2, 5, 7, 10 },
@ -15,14 +16,39 @@ int arpeggio[][4] = {
}; };
int arpseq[16] = { 0, 0, 1, 1, 2, 2, 4, 3, 0, 0, 1, 1, 2, 3, 4, 4 }; int arpseq[16] = { 0, 0, 1, 1, 2, 2, 4, 3, 0, 0, 1, 1, 2, 3, 4, 4 };
int notes2[25] = { 134, 142, 150, 159, 169, 179, 189, 201, 213, 225, 239, 253, 268, 284, 301, 319, 338, 358, 379, 401, 425, 451, 477, 506, 536 };
int bassbeat[8] = { 0, 0, 1, 0, 0, 1, 0, 1 }; int bassbeat[8] = { 0, 0, 1, 0, 0, 1, 0, 1 };
int bassline[16] = { 12, 12, 15, 10, 12, 12, 17, 10, 12, 12, 15, 7, 8, 8, 3, 7 }; int bassline[16] = { 12, 12, 15, 10, 12, 12, 17, 10, 12, 12, 15, 7, 8, 8, 3, 7 };
#define LEADSIZE 28
int leadmelody[LEADSIZE] = { 12, 7, 0, 12, 0, 14, 15, 0, 14, 0, 12, 0, 14, 15, 0, 14, 0, 12, 0, 14, 10, 0, 7, 5, 7, 3, 1, 0 };
int leadtiming[LEADSIZE] = { 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 1, 2, 3, 27};
static inline unsigned char voice_lead(unsigned long i)
{
static uint8_t leadptr = 0xFF;
static uint16_t lead_osc = 0;
static uint8_t leadtimer = 0;
if (0 == leadtimer)
{
leadptr++;
if (leadptr == LEADSIZE)
leadptr = 0;
leadtimer = leadtiming[leadptr];
}
uint8_t melody = leadmelody[leadptr];
int note = notes[melody == 1 ? 0 : melody];
lead_osc += note;
if (0 == (i & 0x3FF))
leadtimer--;
return (!melody) ? 0 : ((lead_osc >> 6) & 0x7F);
}
static inline unsigned char voice_arp(unsigned long i) static inline unsigned char voice_arp(unsigned long i)
{ {
static uint16_t arp_osc = 0; static uint16_t arp_osc = 0;
int note = notes2[12 + arpeggio[arpseq[(i >> 13) & 15]][(i >> 7) & 3]]; int note = notes[12 + arpeggio[arpseq[(i >> 13) & 15]][(i >> 7) & 3]];
arp_osc += note; arp_osc += note;
return ((arp_osc >> 5) & 128) - 1; return ((arp_osc >> 5) & 128) - 1;
} }
@ -30,7 +56,7 @@ static inline unsigned char voice_arp(unsigned long i)
static inline unsigned char voice_bass(unsigned long i) static inline unsigned char voice_bass(unsigned long i)
{ {
static uint16_t bassosc = 0, flangeosc = 0; static uint16_t bassosc = 0, flangeosc = 0;
int note = notes2[bassline[(i >> 13) & 15]]; int note = notes[bassline[(i >> 13) & 15]];
if (bassbeat[(i >> 10) & 7]) if (bassbeat[(i >> 10) & 7])
note <<= 1; note <<= 1;
bassosc += note; bassosc += note;
@ -45,7 +71,7 @@ void fill(char *data)
for (int j = 0; j < 4096; j++) for (int j = 0; j < 4096; j++)
{ {
unsigned char sample = (voice_bass(i) >> 1) + (voice_arp(i) >> 1); unsigned char sample = voice_lead(i);// (voice_bass(i) >> 1) + (voice_arp(i) >> 1);
data[j] = sample; data[j] = sample;
i++; i++;
} }