MIDI Analyzer MCP Server

use serde::{Deserialize, Serialize}; use std::collections::HashMap; #[derive(Default)] pub struct AnalyzerCache { pub by_id: HashMap<String, Analyzed>, pub by_alias: HashMap<String, String>, } #[derive(Clone, Debug, Serialize, Deserialize)] pub struct TrackStat { pub index: usize, pub name: Option<String>, pub channels: Vec<u8>, pub programs: HashMap<u8, u8>, pub note_count: usize, pub note_range: Option<(u8,u8)>, pub velocity_avg: Option<f32>, pub has_drum: bool, } #[derive(Clone, Debug, Serialize, Deserialize)] pub struct Analyzed { pub file_id: String, pub format: String, pub ppq: u16, pub duration_ticks: u64, pub duration_sec: Option<f64>, pub tempo_map: Vec<(u64, f64)>, // (tick, bpm) pub time_sigs: Vec<(u64, u8, u8)>, pub key_sigs: Vec<(u64, i8, bool)>, // (tick, sf, minor?) pub tracks: Vec<TrackStat>, } #[derive(Serialize, Deserialize, Clone, Debug)] pub struct NoteSpan { pub track: usize, pub chan: u8, pub pitch: u8, pub start_tick: u64, pub end_tick: u64, pub vel_on: u8, pub vel_off: u8, } #[derive(Serialize, Deserialize, Clone, Debug)] pub struct FlatEvent { pub track: usize, pub tick: u64, pub sec: Option<f64>, pub kind: String, // e.g., "note_on", "tempo" pub chan: Option<u8>, pub data: serde_json::Value, }