feat: add random meters in demo

src/dsp408/client/default.rs

@@ -1,8 +1,9 @@
 use std::collections::HashMap;
 use strum::IntoEnumIterator;
+use rand::RngExt;
 
 use crate::dsp408::types::ConnectionStatus;
-use super::types::{
+use crate::dsp408::types::{
     Compressor, Crossover, CrossoverFilter, CrossoverFilters, DSPConfigState, DSPState, DelayUnit,
     DeviceFlags, DiscreteFrequency, Gate, GraphicEQ, InputChannel, InputChannelState, InputMeters,
     InputSource, InputType, Limiter, MatrixRoutes, Meter, OutputChannel, OutputChannelState,
@@ -301,3 +302,32 @@ fn default_meter() -> Meter {
         clip: false,
     }
 }
+
+fn random_meter() -> Meter {
+    let mut rng = rand::rng();
+
+    let rms = rng.random_range(-60.0..=0.0);
+    let peak = (rms + rng.random_range(0.0..=12.0) as f32).min(12.0);
+
+    Meter {
+        rms,
+        peak,
+        clip: peak > 0.0,
+    }
+}
+
+pub fn random_input_meters() -> InputMeters {
+    InputMeters {
+        meters: InputChannel::iter()
+            .map(|channel| (channel, random_meter()))
+            .collect(),
+    }
+}
+
+pub fn random_output_meters() -> OutputMeters {
+    OutputMeters {
+        meters: OutputChannel::iter()
+            .map(|channel| (channel, random_meter()))
+            .collect(),
+    }
+}

src/dsp408/client/dsp408.rs

@@ -8,17 +8,12 @@ use std::{
 };
 
 use crate::{
-    common::errors::DSPError,
-    dsp408::{
-        default::{default_input_meters, default_output_meters},
-        default_dsp_state,
-        mapper::{
+    common::errors::DSPError, dsp408::{
+        client::default::{default_dsp_state, default_input_meters, default_output_meters, random_input_meters, random_output_meters}, mapper::{
             self,
             constants::{CONFIG_CHUNK_INDEX_MAX, PRESET_INDEX_MAX, delay_range},
             response::map_response,
-        },
-        protocol::{commands, config::decode_config, frame::extract_frame},
-        types::{self, ConnectionStatus::Disconnected, DSPMode},
+        }, protocol::{commands, config::decode_config, frame::extract_frame}, types::{self, ConnectionStatus::Disconnected, DSPMode},
     },
 };
 
@@ -1796,7 +1791,13 @@ impl DSP408 {
         match self.state.connection {
             types::ConnectionStatus::Connected => {
                 if self.mode == types::DSPMode::Demo {
-                    return Ok((self.input_meters.clone(), self.output_meters.clone()));
+                    self.input_meters = random_input_meters();
+                    self.output_meters = random_output_meters();
+
+                    return Ok((
+                        self.input_meters.clone(),
+                        self.output_meters.clone(),
+                    ));
                 }
 
                 let request = commands::build_get_meter_levels();

src/dsp408/client/mod.rs

@@ -1,2 +1,4 @@
 mod dsp408;
+mod default;
+
 pub use dsp408::DSP408;

src/dsp408/mod.rs

@@ -1,9 +1,7 @@
 mod client;
-mod default;
 mod mapper;
 mod protocol;
 
 pub mod types;
 
 pub use client::DSP408;
-pub(crate) use default::default_dsp_state;