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Code Issues Releases Wiki Activity

frequency setting

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Zeno Rogue
2020-05-25 23:58:33 +02:00
parent f6a9cad299
commit 5393994920
1 changed files with 27 additions and 14 deletions
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39
rogueviz/reverb.cpp
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@@ -14,6 +14,8 @@ namespace rogueviz {
namespace embed {
int freq = 44100;
bool in = false;
bool started = false;
@@ -60,7 +62,7 @@ void myAudio(void *userdata, Uint8* stream, int len) {
void start_audio() {
SDL_AudioSpec spec;
spec.freq = 44100;
spec.freq = freq;
spec.format = AUDIO_S16SYS;
spec.channels = 2;
spec.samples = 4096;
@@ -97,9 +99,9 @@ void reverb_queue() {
prevt = curt;
int& used_ticks = inHighQual ? ticks : sc_ticks;
curt = (used_ticks * (long long)(44100)) / 1000;
curt = (used_ticks * (long long)(freq)) / 1000;
if(prevt > curt) prevt = curt;
if(curt - prevt > 44100) return;
if(curt - prevt > freq) return;
sndbuffer.resize(curt, {0, 0});
@@ -109,31 +111,42 @@ void reverb_queue() {
if(p.lastframe != p.curframe-1)
p.lastdist = p.curdist;
int dist = celldistance(ps.first, cwt.at);
ld base = pow(1-absorption, dist);
if(dist > 2 && !inHighQual) continue;
// if(ps.first == cwt.at) println(hlog, (p.curdist - p.lastdist) / (curt - prevt));
if(dist > (sphere?3:2) && !inHighQual) continue;
for(int s=0; s<(sphere?10:1); s++) {
ld dist1 = dist + 3 * s;
ld base = pow(1-absorption, dist1);
ld att0[2];
ld att1[2];
for(int ch=0; ch<2; ch++)
att0[ch] = min<ld>(base / sin_auto(p.lastdist[ch]), 5);
/* no need to add abs or pi*s to sin */
for(int ch=0; ch<2; ch++)
att1[ch] = min<ld>(base / sin_auto(p.curdist[ch]), 5);
for(int ch=0; ch<2; ch++) {
att0[ch] = base / sin_auto(p.lastdist[ch]);
att1[ch] = base / sin_auto(p.curdist[ch]);
if(att0[ch] > 5) println(hlog, att0[ch], "capped to 5");
if(att0[ch] > 5) att0[ch] = 5;
if(att1[ch] > 5) att1[ch] = 5;
}
for(int ch: {0,1})
for(int i=prevt; i<curt; i++) {
ld a = ilerp(prevt, curt, i);
ld d = lerp(p.lastdist[ch], p.curdist[ch], a);
int tim = (i - d * 44100 * speed_of_sound);
if(tim < 0) continue;
ld d = lerp(p.lastdist[ch], p.curdist[ch], a) + M_PI * s;
int tim = (i - d * freq * speed_of_sound);
tim %= isize(orig);
if(tim < 0) tim += isize(orig);
sndbuffer[i][ch] += orig[tim][ch] * lerp(att0[ch], att1[ch], a);
}
p.lastframe = p.curframe;
p.lastdist = p.curdist;
}
}
for(int i=prevt; i<curt; i++) for(int ch: {0,1})
if(sndbuffer[i][ch] > maxsnd) maxsnd = sndbuffer[i][ch];
@@ -180,7 +193,7 @@ void show() {
dialog::editNumber(absorption, 0, 1, .1, .01, "absorption", "");
});
dialog::addSelItem("resynchronize", fts((current_sample - curt) / 44100.), 'r');
dialog::addSelItem("resynchronize", fts((current_sample - curt) * 1. / freq), 'r');
dialog::add_action([]() {
current_sample = curt;
});