add wildnoise cmd
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5 changed files with 64 additions and 2 deletions
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@ -138,10 +138,12 @@ Parameters:
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- `feedback`: Feedback, 0..1, default 0
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- `xfade_samp`: Crossfade samples (int), 0..5000, default 1250
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## `noise split index seed repeat_bytes`
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## `wildnoise/noise split index seed repeat_bytes`
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Inject random noise on the image.
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the `wildnoise` version gives a harder version than `noise`.
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Parameters:
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- `seed`, Random seed
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- `repeat_bytes`, Amount of bytes to preload with random data and repeat
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@ -1,5 +1,5 @@
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load :0;
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noise 5 1 3981 10000;
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noise 5 2 3982 0;
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wildnoise 5 2 3982 0;
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noise 5 3 3982 5;
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quicksave;
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@ -50,3 +50,47 @@ pub const RandomNoise = struct {
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}
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}
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};
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pub const WildNoise = struct {
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r: std.rand.DefaultPrng,
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rand_buf: ?[]f32,
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cnt: usize = 0,
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pub fn init(
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allocator: *std.mem.Allocator,
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params: *plugins.ParamMap,
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) !WildNoise {
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const seed = @floatToInt(u64, params.get("seed").?.value);
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const fillbytes = @floatToInt(usize, params.get("fill_bytes").?.value);
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var r = std.rand.DefaultPrng.init(seed);
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if (fillbytes > 0) {
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var rand_buf = try allocator.alloc(f32, fillbytes);
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for (rand_buf) |_, idx| {
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rand_buf[idx] = @intToFloat(f32, r.random.int(u1));
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}
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return WildNoise{
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.r = r,
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.rand_buf = rand_buf,
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};
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} else {
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return WildNoise{
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.r = r,
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.rand_buf = null,
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};
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}
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}
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pub fn run(self: *WildNoise, bufs: *RunBuffers) void {
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if (self.rand_buf) |rand_buf| {
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if (self.cnt >= rand_buf.len) self.cnt = 0;
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bufs.out[0] = rand_buf[self.cnt];
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self.cnt += 1;
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} else {
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bufs.out[0] = @intToFloat(f32, self.r.random.int(u1));
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}
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}
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};
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@ -27,6 +27,7 @@ pub const CommandType = enum {
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Vinyl,
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RevDelay,
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Noise,
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WildNoise,
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};
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pub const Command = struct {
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@ -157,6 +158,7 @@ pub const Lang = struct {
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// custom implementations (not lv2)
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_ = try self.keywords.put("noise", .Noise);
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_ = try self.keywords.put("wildnoise", .WildNoise);
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}
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pub fn parse(self: *Lang, data: []const u8) !CommandList {
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@ -252,6 +252,11 @@ pub const Runner = struct {
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try image.runCustomPlugin(custom.RandomNoise, pos, map);
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}
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fn wildNoiseCmd(self: *Runner, pos: Position, map: *ParamMap) !void {
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var image = try self.getImage();
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try image.runCustomPlugin(custom.WildNoise, pos, map);
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}
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fn runCommand(self: *Runner, cmd: *lang.Command) !void {
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var params = ParamList.init(self.allocator);
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defer params.deinit();
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@ -403,6 +408,15 @@ pub const Runner = struct {
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try self.noiseCmd(pos, &map);
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},
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.WildNoise => blk: {
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const pos = try cmd.consumePosition();
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try cmd.appendParamMap(&map, "seed");
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try cmd.appendParamMap(&map, "fill_bytes");
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try self.wildNoiseCmd(pos, &map);
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},
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else => blk: {
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std.debug.warn("Unsupported command: {}\n", cmd.command);
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break :blk RunError.UnknownCommand;
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