149 lines
No EOL
4.2 KiB
Zig
149 lines
No EOL
4.2 KiB
Zig
const std = @import("std");
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const math = std.math;
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const print = std.debug.print;
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const Allocator = std.mem.Allocator;
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const SoundNode = @import("soundnode.zig").SoundNode;
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const FreqAmpBuffer = @import("freqamp.zig").FreqAmpBuffer;
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const utility = @import("utility.zig");
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const basicsynths = @import ("activities/basicsynths.zig");
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const spatial = @import ("activities/spatial.zig");
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const generators = @import ("activities/generators.zig");
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pub const Activity = struct {
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start_tick: u32,
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end_tick: u32,
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opcode: u16,
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soundnode: *SoundNode,
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operands: [6]f64 = std.mem.zeroes([6]f64),
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pub fn create(allocator: Allocator, start_tick: u32, end_tick: u32, opcode: u16, soundnode: *SoundNode, operands: [6]f64) !*Activity {
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const a = try allocator.create(Activity);
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a.* = .{
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.start_tick = start_tick,
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.end_tick = end_tick,
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.opcode = opcode,
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.soundnode = soundnode,
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.operands = operands,
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};
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return a;
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}
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pub fn do(self: *Activity) !void {
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switch (self.opcode) {
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//STARTOPCODES
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4 => { self.relay(); },
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5 => { self.copy(); },
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6 => { self.mute(); },
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7 => { self.rerange(); },
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10 => { spatial.setpos(self); },
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50 => { basicsynths.sine(self); },
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51 => { basicsynths.triangle(self); },
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52 => { basicsynths.square(self); },
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53 => { basicsynths.sawtooth(self); },
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54 => { basicsynths.skewsine(self); },
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55 => { basicsynths.pulse(self); },
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56 => { basicsynths.whitenoise(self); },
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//100 => { generators.singenN(self); },
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150 => { generators.adsr(self); },
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//ENDOPCODES
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else => {},
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}
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}
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pub fn relay(self: *Activity) void {
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self.soundnode.add_r_amp(self.soundnode.pins[1] * self.soundnode.pins[32]);
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self.soundnode.add_r_amp(self.soundnode.pins[2] * self.soundnode.pins[32]);
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}
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pub fn copy(self: *Activity) void {
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const from_pin: usize = @intFromFloat(self.operands[0]);
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const to_pin: usize = @intFromFloat(self.operands[1]);
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// Special case: setting freq results in setting calculating new phase too
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if (to_pin >= 64 and to_pin < 112) {
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const freq_no = to_pin - 64;
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const fcurrent_tick: f64 = @floatFromInt(self.soundnode.fab.current_tick);
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const prevphase = self.soundnode.pins[208 + freq_no];
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const prevfreq = self.soundnode.pins[to_pin];
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const newfreq = self.soundnode.pins[from_pin];
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self.soundnode.pins[to_pin] = newfreq;
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const c = fcurrent_tick / 44100;
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const pp = prevphase + c * (newfreq - prevfreq) + @floor(c * prevfreq - prevphase);
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self.soundnode.pins[208 + freq_no] = pp - @floor(pp);
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} else {
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self.soundnode.pins[to_pin] = self.soundnode.pins[from_pin];
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}
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}
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pub fn rerange(self: *Activity) void {
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const from_pin: usize = @intFromFloat(self.operands[0]);
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const to_pin: usize = @intFromFloat(self.operands[1]);
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const from_lo = self.operands[2];
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const from_hi = self.operands[3];
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const to_lo = self.operands[4];
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const to_hi = self.operands[5];
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// Special case: setting freq results in setting calculating new phase too
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if (to_pin >= 64 and to_pin < 112) {
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const freq_no = to_pin - 64;
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const fcurrent_tick: f64 = @floatFromInt(self.soundnode.fab.current_tick);
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const prevphase = self.soundnode.pins[208 + freq_no];
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const prevfreq = self.soundnode.pins[to_pin];
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//const newfreq = self.soundnode.pins[from_pin];
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const share = (self.soundnode.pins[from_pin] - from_lo) / (from_hi - from_lo);
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const newfreq = to_lo + ((to_hi - to_lo) * share);
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//print("ORIG {d} SHARE {d} NEWFREQ {d} ", .{self.soundnode.pins[from_pin], share, newfreq});
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self.soundnode.pins[to_pin] = newfreq;
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const c = fcurrent_tick / 44100;
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const pp = prevphase + c * (newfreq - prevfreq) + @floor(c * prevfreq - prevphase);
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//print("OLDPHASE {d} NEWPHASE {d} :: ", .{self.soundnode.pins[208 + freq_no], pp - @floor(pp)});
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self.soundnode.pins[208 + freq_no] = pp - @floor(pp);
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} else {
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const share = (self.soundnode.pins[from_pin] - from_lo) / (from_hi - from_lo);
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self.soundnode.pins[to_pin] = to_lo + ((to_hi - to_lo) * share);
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}
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}
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pub fn mute(self: *Activity) void {
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self.soundnode.fab.set_r_amp(0);
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self.soundnode.pins[0] = 0;
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}
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}; |