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This commit is contained in:
Raphaël Forment
2026-01-29 11:53:47 +01:00
parent 4d0d837e14
commit 845c1134fe
14 changed files with 764 additions and 214 deletions
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97
src/engine/sequencer.rs
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@@ -93,17 +93,19 @@ pub struct ActivePatternState {
pub iter: usize,
}
pub type StepTracesMap = HashMap<(usize, usize, usize), ExecutionTrace>;
#[derive(Clone, Default)]
pub struct SharedSequencerState {
pub active_patterns: Vec<ActivePatternState>,
pub step_traces: HashMap<(usize, usize, usize), ExecutionTrace>,
pub step_traces: Arc<StepTracesMap>,
pub event_count: usize,
pub dropped_events: usize,
}
pub struct SequencerSnapshot {
pub active_patterns: Vec<ActivePatternState>,
pub step_traces: HashMap<(usize, usize, usize), ExecutionTrace>,
step_traces: Arc<StepTracesMap>,
pub event_count: usize,
pub dropped_events: usize,
}
@@ -146,7 +148,7 @@ impl SequencerHandle {
let state = self.shared_state.load();
SequencerSnapshot {
active_patterns: state.active_patterns.clone(),
step_traces: state.step_traces.clone(),
step_traces: Arc::clone(&state.step_traces),
event_count: state.event_count,
dropped_events: state.dropped_events,
}
@@ -366,7 +368,6 @@ pub(crate) struct TickOutput {
}
struct StepResult {
audio_commands: Vec<String>,
completed_iterations: Vec<PatternId>,
any_step_fired: bool,
}
@@ -384,15 +385,44 @@ fn parse_chain_target(s: &str) -> Option<PatternId> {
})
}
struct KeyCache {
speed_keys: [[String; MAX_PATTERNS]; MAX_BANKS],
chain_keys: [[String; MAX_PATTERNS]; MAX_BANKS],
}
impl KeyCache {
fn new() -> Self {
Self {
speed_keys: std::array::from_fn(|bank| {
std::array::from_fn(|pattern| format!("__speed_{bank}_{pattern}__"))
}),
chain_keys: std::array::from_fn(|bank| {
std::array::from_fn(|pattern| format!("__chain_{bank}_{pattern}__"))
}),
}
}
fn speed_key(&self, bank: usize, pattern: usize) -> &str {
&self.speed_keys[bank][pattern]
}
fn chain_key(&self, bank: usize, pattern: usize) -> &str {
&self.chain_keys[bank][pattern]
}
}
pub(crate) struct SequencerState {
audio_state: AudioState,
pattern_cache: PatternCache,
runs_counter: RunsCounter,
step_traces: HashMap<(usize, usize, usize), ExecutionTrace>,
step_traces: Arc<StepTracesMap>,
event_count: usize,
dropped_events: usize,
script_engine: ScriptEngine,
variables: Variables,
speed_overrides: HashMap<(usize, usize), f64>,
key_cache: KeyCache,
buf_audio_commands: Vec<String>,
}
impl SequencerState {
@@ -406,11 +436,14 @@ impl SequencerState {
audio_state: AudioState::new(),
pattern_cache: PatternCache::new(),
runs_counter: RunsCounter::new(),
step_traces: HashMap::new(),
step_traces: Arc::new(HashMap::new()),
event_count: 0,
dropped_events: 0,
script_engine,
variables,
speed_overrides: HashMap::new(),
key_cache: KeyCache::new(),
buf_audio_commands: Vec::new(),
}
}
@@ -459,7 +492,7 @@ impl SequencerState {
self.audio_state.active_patterns.clear();
self.audio_state.pending_starts.clear();
self.audio_state.pending_stops.clear();
self.step_traces.clear();
Arc::make_mut(&mut self.step_traces).clear();
self.runs_counter.counts.clear();
}
SeqCommand::Shutdown => {}
@@ -491,7 +524,7 @@ impl SequencerState {
self.audio_state.prev_beat = beat;
TickOutput {
audio_commands: steps.audio_commands,
audio_commands: std::mem::take(&mut self.buf_audio_commands),
new_tempo: vars.new_tempo,
shared_state: self.build_shared_state(),
}
@@ -500,13 +533,14 @@ impl SequencerState {
fn tick_paused(&mut self) -> TickOutput {
for pending in self.audio_state.pending_stops.drain(..) {
self.audio_state.active_patterns.remove(&pending.id);
self.step_traces.retain(|&(bank, pattern, _), _| {
Arc::make_mut(&mut self.step_traces).retain(|&(bank, pattern, _), _| {
bank != pending.id.bank || pattern != pending.id.pattern
});
}
self.audio_state.pending_starts.clear();
self.buf_audio_commands.clear();
TickOutput {
audio_commands: Vec::new(),
audio_commands: std::mem::take(&mut self.buf_audio_commands),
new_tempo: None,
shared_state: self.build_shared_state(),
}
@@ -547,7 +581,7 @@ impl SequencerState {
for pending in &self.audio_state.pending_stops {
if check_quantization_boundary(pending.quantization, beat, prev_beat, quantum) {
self.audio_state.active_patterns.remove(&pending.id);
self.step_traces.retain(|&(bank, pattern, _), _| {
Arc::make_mut(&mut self.step_traces).retain(|&(bank, pattern, _), _| {
bank != pending.id.bank || pattern != pending.id.pattern
});
stopped.push(pending.id);
@@ -565,32 +599,29 @@ impl SequencerState {
fill: bool,
nudge_secs: f64,
) -> StepResult {
self.buf_audio_commands.clear();
let mut result = StepResult {
audio_commands: Vec::new(),
completed_iterations: Vec::new(),
any_step_fired: false,
};
let speed_overrides: HashMap<(usize, usize), f64> = {
self.speed_overrides.clear();
{
let vars = self.variables.lock().unwrap();
self.audio_state
.active_patterns
.keys()
.filter_map(|id| {
let key = format!("__speed_{}_{}__", id.bank, id.pattern);
vars.get(&key)
.and_then(|v| v.as_float().ok())
.map(|v| ((id.bank, id.pattern), v))
})
.collect()
};
for id in self.audio_state.active_patterns.keys() {
let key = self.key_cache.speed_key(id.bank, id.pattern);
if let Some(v) = vars.get(key).and_then(|v| v.as_float().ok()) {
self.speed_overrides.insert((id.bank, id.pattern), v);
}
}
}
for (_id, active) in self.audio_state.active_patterns.iter_mut() {
let Some(pattern) = self.pattern_cache.get(active.bank, active.pattern) else {
continue;
};
let speed_mult = speed_overrides
let speed_mult = self.speed_overrides
.get(&(active.bank, active.pattern))
.copied()
.unwrap_or_else(|| pattern.speed.multiplier());
@@ -634,13 +665,13 @@ impl SequencerState {
.script_engine
.evaluate_with_trace(script, &ctx, &mut trace)
{
self.step_traces.insert(
Arc::make_mut(&mut self.step_traces).insert(
(active.bank, active.pattern, source_idx),
std::mem::take(&mut trace),
);
for cmd in cmds {
self.event_count += 1;
result.audio_commands.push(cmd);
self.buf_audio_commands.push(cmd);
}
}
}
@@ -681,18 +712,18 @@ impl SequencerState {
let mut chain_transitions = Vec::new();
for id in completed {
let chain_key = format!("__chain_{}_{}__", id.bank, id.pattern);
if let Some(Value::Str(s, _)) = vars.get(&chain_key) {
let chain_key = self.key_cache.chain_key(id.bank, id.pattern);
if let Some(Value::Str(s, _)) = vars.get(chain_key) {
if let Some(target) = parse_chain_target(s) {
chain_transitions.push((*id, target));
}
}
vars.remove(&chain_key);
vars.remove(chain_key);
}
for id in stopped {
let chain_key = format!("__chain_{}_{}__", id.bank, id.pattern);
vars.remove(&chain_key);
let chain_key = self.key_cache.chain_key(id.bank, id.pattern);
vars.remove(chain_key);
}
VariableReads {
@@ -738,7 +769,7 @@ impl SequencerState {
iter: a.iter,
})
.collect(),
step_traces: self.step_traces.clone(),
step_traces: Arc::clone(&self.step_traces),
event_count: self.event_count,
dropped_events: self.dropped_events,
}