294 lines
No EOL
7.9 KiB
Zig
294 lines
No EOL
7.9 KiB
Zig
const std = @import("std");
|
|
const math = std.math;
|
|
const print = std.debug.print;
|
|
|
|
const ArrayList = std.ArrayList;
|
|
const Endian = std.builtin.Endian;
|
|
|
|
const SoundNode = @import("soundnode.zig").SoundNode;
|
|
const Activity = @import("activity.zig").Activity;
|
|
const SoundSettings = @import("settings.zig").SoundSettings;
|
|
const utility = @import("utility.zig");
|
|
|
|
|
|
pub fn singleSineTick(st: *SoundSettings, freq: f64, t: u32, phase: f64) f64 {
|
|
const ft: f64 = @floatFromInt(t);
|
|
return math.sin(st.sine_multiplier * freq * ft - phase * utility.tau);
|
|
}
|
|
|
|
pub fn main() !void {
|
|
|
|
const allocator = std.heap.c_allocator;
|
|
|
|
// Initializing sound settings
|
|
const settings: SoundSettings = SoundSettings{};
|
|
|
|
// Creating a list of soundnodes
|
|
var soundnodes = ArrayList(*SoundNode).init(allocator);
|
|
defer soundnodes.deinit();
|
|
|
|
// Determining length of resulting audio in ticks
|
|
const start_tick: u32 = 0;
|
|
var end_tick: u32 = 44100 * 10;
|
|
|
|
// Loading the input binary code, preparing registers
|
|
const file = try std.fs.cwd().openFile("source.snmb", .{});
|
|
defer file.close();
|
|
|
|
const stat = try file.stat();
|
|
const buf: []u8 = try file.readToEndAlloc(allocator, stat.size);
|
|
|
|
var cursor: u32 = 0;
|
|
|
|
var opcode: u16 = 0;
|
|
var tick_start: u32 = 0;
|
|
var tick_end: u32 = 0;
|
|
var src_node: u16 = 0;
|
|
var trg_node: u16 = 0;
|
|
var op1: f64 = 0;
|
|
var op2: f64 = 0;
|
|
var op3: f64 = 0;
|
|
var op4: f64 = 0;
|
|
var op5: f64 = 0;
|
|
var op6: f64 = 0;
|
|
|
|
// Preparing to write wav data to stdout
|
|
const stdout_file = std.io.getStdOut().writer();
|
|
var bw = std.io.bufferedWriter(stdout_file);
|
|
const stdout = bw.writer();
|
|
|
|
// Writing WAV header
|
|
|
|
try stdout.writeAll("RIFF");
|
|
|
|
try stdout.writeInt(
|
|
u32,
|
|
36 + (end_tick * 2 * settings.sample_width),
|
|
Endian.little,
|
|
);
|
|
|
|
try stdout.writeAll("WAVE");
|
|
try stdout.writeAll("fmt ");
|
|
|
|
try stdout.writeInt(u32, 16, Endian.little);
|
|
try stdout.writeInt(u16, 1, Endian.little);
|
|
try stdout.writeInt(u16, 2, Endian.little);
|
|
try stdout.writeInt(u32, settings.sample_rate, Endian.little);
|
|
|
|
const block_align: u16 = @intCast(2 * settings.sample_width);
|
|
|
|
try stdout.writeInt(u32, @as(u32, block_align) * settings.sample_rate, Endian.little);
|
|
try stdout.writeInt(u16, block_align, Endian.little);
|
|
try stdout.writeInt(u16, settings.bit_depth, Endian.little);
|
|
|
|
try stdout.writeAll("data");
|
|
|
|
// Setting up tick iteration
|
|
var tick: u32 = start_tick;
|
|
var sample: i24 = 0.0;
|
|
var left: *SoundNode = undefined;
|
|
var right: *SoundNode = undefined;
|
|
|
|
var nextopcodetick: u32 = 0;
|
|
|
|
while (tick < end_tick) {
|
|
|
|
if (tick%44100 == 0) {
|
|
print("T {d} ", .{tick});
|
|
}
|
|
|
|
if (tick == nextopcodetick) {
|
|
|
|
while (cursor < buf.len) {
|
|
|
|
opcode = std.mem.readVarInt(u16, buf[cursor..cursor+2], .big);
|
|
//print("----\nCURRENT TICK {d}\nOPCODE {d} :: {any}\n", .{tick, opcode, buf[cursor..cursor+2]});
|
|
cursor += 2;
|
|
|
|
tick_start = std.mem.readVarInt(u32, buf[cursor..cursor+4], .big);
|
|
//print("TICKSTART {d} :: {any}\n", .{tick_start, buf[cursor..cursor+4]});
|
|
cursor += 4;
|
|
|
|
if (tick_start > tick) {
|
|
cursor -= 6;
|
|
nextopcodetick = tick_start;
|
|
break;
|
|
|
|
} else {
|
|
|
|
tick_end = std.mem.readVarInt(u32, buf[cursor..cursor+4], .big);
|
|
//print("TICKEND {d} :: {any}\n", .{tick_end, buf[cursor..cursor+4]});
|
|
cursor += 4;
|
|
|
|
src_node = std.mem.readVarInt(u16, buf[cursor..cursor+2], .big);
|
|
//print("SRCNODE {d} :: {any}\n", .{src_node, buf[cursor..cursor+2]});
|
|
cursor += 2;
|
|
|
|
trg_node = std.mem.readVarInt(u16, buf[cursor..cursor+2], .big);
|
|
//print("TRGNODE {d} :: {any}\n", .{trg_node, buf[cursor..cursor+2]});
|
|
cursor += 2;
|
|
|
|
op1 = @bitCast(std.mem.readVarInt(u64, buf[cursor..cursor+8], .big));
|
|
//print("OP1 {d} :: {any}\n", .{op1, buf[cursor..cursor+8]});
|
|
cursor += 8;
|
|
|
|
op2 = @bitCast(std.mem.readVarInt(u64, buf[cursor..cursor+8], .big));
|
|
//print("OP2 {d} :: {any}\n", .{op2, buf[cursor..cursor+8]});
|
|
cursor += 8;
|
|
|
|
op3 = @bitCast(std.mem.readVarInt(u64, buf[cursor..cursor+8], .big));
|
|
//print("OP3 {d} :: {any}\n", .{op3, buf[cursor..cursor+8]});
|
|
cursor += 8;
|
|
|
|
op4 = @bitCast(std.mem.readVarInt(u64, buf[cursor..cursor+8], .big));
|
|
//print("OP4 {d} :: {any}\n", .{op4, buf[cursor..cursor+8]});
|
|
cursor += 8;
|
|
|
|
op5 = @bitCast(std.mem.readVarInt(u64, buf[cursor..cursor+8], .big));
|
|
//print("OP5 {d} :: {any}\n", .{op5, buf[cursor..cursor+8]});
|
|
cursor += 8;
|
|
|
|
op6 = @bitCast(std.mem.readVarInt(u64, buf[cursor..cursor+8], .big));
|
|
//print("OP6 {d} :: {any}\n", .{op6, buf[cursor..cursor+8]});
|
|
cursor += 8;
|
|
|
|
// Executing opcodes
|
|
|
|
switch (opcode) {
|
|
|
|
0 => {
|
|
const nodename = try std.fmt.allocPrint(allocator, "{d}", .{src_node});
|
|
|
|
const sn = try SoundNode.create(allocator, nodename);
|
|
//print("Added node {s} at tick {d}\n", .{nodename, tick});
|
|
try soundnodes.append(sn);
|
|
|
|
try sn.s("basefreq", @as(f64, 440));
|
|
try sn.s("gain", @as(f64, 1));
|
|
try sn.s("phase", @as(f64, 0));
|
|
|
|
},
|
|
|
|
1 => {
|
|
const src = soundnodes.items[src_node];
|
|
const trg = soundnodes.items[trg_node];
|
|
//print("Wired nodes at tick {d}\n", .{tick});
|
|
|
|
try trg.wire_in.append(src);
|
|
},
|
|
|
|
2 => {
|
|
const src = soundnodes.items[src_node];
|
|
const trg = soundnodes.items[trg_node];
|
|
|
|
//print("Aired nodes at tick {d}\n", .{tick});
|
|
try trg.air_in.append(src);
|
|
},
|
|
|
|
3 => {
|
|
end_tick = tick_end;
|
|
|
|
try stdout.writeInt(
|
|
u32,
|
|
end_tick * 2 * settings.sample_width,
|
|
Endian.little,
|
|
);
|
|
//print("End tick set to {d}\n", .{end_tick});
|
|
},
|
|
|
|
else => {
|
|
|
|
const src = soundnodes.items[src_node];
|
|
const a = try Activity.create(allocator, tick_start, tick_end, opcode, src, [6]f64{op1, op2, op3, op4, op5, op6});
|
|
|
|
//print("Set activity {d} for node {d} s at tick {d}\n", .{opcode, src_node, tick});
|
|
try src.activities.append(a);
|
|
|
|
},
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
//All but left and right
|
|
|
|
for (soundnodes.items[2..], 0..) |soundnode, i| {
|
|
|
|
var toremove = ArrayList(usize).init(allocator);
|
|
defer toremove.deinit();
|
|
|
|
for (soundnode.activities.items, 0..) |activity, j| {
|
|
|
|
if (tick <= activity.end_tick and tick >= activity.start_tick) {
|
|
try activity.do();
|
|
} else if (tick >= activity.end_tick) {
|
|
try toremove.append(j);
|
|
}
|
|
}
|
|
|
|
var j: usize = toremove.items.len;
|
|
|
|
while (j > 0) {
|
|
j -= 1;
|
|
const activity_ind = toremove.items[j];
|
|
_ = soundnode.activities.swapRemove(activity_ind);
|
|
}
|
|
|
|
soundnode.fab.increment_tick();
|
|
_ = i;
|
|
}
|
|
|
|
//Left and right
|
|
|
|
for (soundnodes.items[0..2], 0..) |soundnode, i| {
|
|
|
|
var toremove = ArrayList(usize).init(allocator);
|
|
defer toremove.deinit();
|
|
|
|
for (soundnode.activities.items, 0..) |activity, j| {
|
|
|
|
if (tick <= activity.end_tick and tick >= activity.start_tick) {
|
|
try activity.do();
|
|
} else if (tick >= activity.end_tick) {
|
|
try toremove.append(j);
|
|
}
|
|
|
|
}
|
|
|
|
var j: usize = toremove.items.len;
|
|
|
|
while (j > 0) {
|
|
j -= 1;
|
|
const activity_ind = toremove.items[j];
|
|
_ = soundnode.activities.swapRemove(activity_ind);
|
|
}
|
|
|
|
_ = i;
|
|
}
|
|
|
|
//Calculating and writing output amps
|
|
|
|
left = soundnodes.items[0];
|
|
right = soundnodes.items[1];
|
|
|
|
const current_r_amp_left = left.fab.get_current_r_amp();
|
|
sample = @intFromFloat(current_r_amp_left * settings.max_amp_multiplier);
|
|
try stdout.writeInt(i24, sample, Endian.little);
|
|
|
|
const current_r_amp_right = right.fab.get_current_r_amp();
|
|
sample = @intFromFloat(current_r_amp_right * settings.max_amp_multiplier);
|
|
try stdout.writeInt(i24, sample, Endian.little);
|
|
|
|
left.fab.increment_tick();
|
|
right.fab.increment_tick();
|
|
tick += 1;
|
|
|
|
}
|
|
|
|
try bw.flush();
|
|
|
|
} |