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