sligthly better

2025-10-15 02:09:30 +02:00
parent d43d16c73c
commit a4432fa3d9
3 changed files with 442 additions and 59 deletions
--- a/src/lib/csound/engine.ts
+++ b/src/lib/csound/engine.ts
@ -1,23 +1,40 @@
 import { Csound } from '@csound/browser';

+export type InstanceMode = 'persistent' | 'ephemeral';
+
 export interface CsoundEngineOptions {
  onMessage?: (message: string) => void;
  onError?: (error: string) => void;
  onPerformanceEnd?: () => void;
  onAnalyserNodeCreated?: (node: AnalyserNode) => void;
+  instanceMode?: InstanceMode;
+}
+
+export interface PerformanceMetrics {
+  kperiodCount: number;
+  currentTime: number;
+  isRunning: boolean;
+}
+
+export interface CompilationResult {
+  success: boolean;
+  errorMessage?: string;
 }

 export class CsoundEngine {
  private csound: Csound | null = null;
  private initialized = false;
+  private compiled = false;
  private running = false;
  private options: CsoundEngineOptions;
  private scopeNode: AnalyserNode | null = null;
  private audioNode: AudioNode | null = null;
  private audioContext: AudioContext | null = null;
+  private instanceMode: InstanceMode;

  constructor(options: CsoundEngineOptions = {}) {
    this.options = options;
+    this.instanceMode = options.instanceMode ?? 'ephemeral';
  }

  async init(): Promise<void> {
@ -27,7 +44,98 @@ export class CsoundEngine {
    this.log('Csound ready');
  }

-  async evaluateCode(code: string): Promise<void> {
+  private async ensureCsoundInstance(): Promise<void> {
+    if (!this.csound) {
+      this.log('Creating Csound instance...');
+      this.csound = await Csound();
+      this.setupCallbacks();
+      await this.csound.setOption('-odac');
+    }
+  }
+
+  private setupCallbacks(): void {
+    if (!this.csound) return;
+
+    this.csound.on('message', (message: string) => {
+      this.options.onMessage?.(message);
+    });
+
+    this.csound.on('onAudioNodeCreated', (node: AudioNode) => {
+      this.audioNode = node;
+      this.audioContext = node.context as AudioContext;
+      this.log('Audio node created and captured');
+    });
+
+    this.csound.on('realtimePerformanceEnded', async () => {
+      this.running = false;
+      this.log('Performance complete');
+      this.options.onPerformanceEnd?.();
+    });
+  }
+
+  async compileOrchestra(orchestra: string): Promise<CompilationResult> {
+    if (!this.initialized) {
+      throw new Error('Csound not initialized. Call init() first.');
+    }
+
+    try {
+      await this.ensureCsoundInstance();
+
+      this.log('Compiling orchestra...');
+      const result = await this.csound!.compileOrc(orchestra);
+
+      if (result !== 0) {
+        const errorMsg = 'Orchestra compilation failed';
+        this.error(errorMsg);
+        return { success: false, errorMessage: errorMsg };
+      }
+
+      this.compiled = true;
+      this.log('Orchestra compiled successfully');
+      return { success: true };
+
+    } catch (error) {
+      const errorMsg = error instanceof Error ? error.message : 'Compilation failed';
+      this.error(errorMsg);
+      return { success: false, errorMessage: errorMsg };
+    }
+  }
+
+  async startPerformance(): Promise<void> {
+    if (!this.compiled) {
+      throw new Error('No orchestra compiled. Call compileOrchestra() first.');
+    }
+
+    if (this.running) {
+      this.log('Already running');
+      return;
+    }
+
+    this.log('Starting performance...');
+    await this.csound!.start();
+    this.running = true;
+    this.setupAnalyser();
+    this.log('Performance started');
+  }
+
+  async readScore(score: string): Promise<void> {
+    if (!this.csound) {
+      throw new Error('No Csound instance available');
+    }
+
+    this.log('Reading score...');
+    await this.csound.readScore(score);
+  }
+
+  async sendScoreEvent(event: string): Promise<void> {
+    if (!this.running) {
+      throw new Error('Csound not running. Call startPerformance() first.');
+    }
+
+    await this.csound!.readScore(event);
+  }
+
+  async evaluateCode(code: string, forceNewInstance = false): Promise<void> {
    if (!this.initialized) {
      throw new Error('Csound not initialized. Call init() first.');
    }
@ -37,32 +145,21 @@ export class CsoundEngine {
        await this.stop();
      }

+      const needsNewInstance = forceNewInstance ||
+                               this.instanceMode === 'ephemeral' ||
+                               !this.csound;
+
+      if (needsNewInstance && this.csound) {
+        this.log('Destroying existing instance...');
+        await this.cleanupInstance();
+      } else if (this.csound && this.compiled) {
+        this.log('Resetting Csound for new performance...');
+        await this.resetForNewPerformance();
+      }
+
      this.scopeNode = null;

-      this.log('Creating new Csound instance...');
-      this.csound = await Csound();
-
-      this.csound.on('message', (message: string) => {
-        this.options.onMessage?.(message);
-      });
-
-      this.csound.on('onAudioNodeCreated', (node: AudioNode) => {
-        this.audioNode = node;
-        this.audioContext = node.context as AudioContext;
-        this.log('Audio node created and captured');
-      });
-
-      this.csound.on('realtimePerformanceEnded', async () => {
-        try {
-          await this.csound?.cleanup();
-        } catch {}
-        this.running = false;
-        this.log('Performance complete');
-        this.options.onPerformanceEnd?.();
-      });
-
-      this.log('Setting audio output...');
-      await this.csound.setOption('-odac');
+      await this.ensureCsoundInstance();

      const orcMatch = code.match(/<CsInstruments>([\s\S]*?)<\/CsInstruments>/);
      const scoMatch = code.match(/<CsScore>([\s\S]*?)<\/CsScore>/);
@ -74,42 +171,125 @@ export class CsoundEngine {
      const orc = orcMatch[1].trim();
      const sco = scoMatch[1].trim();

-      this.log('Compiling orchestra...');
-      const compileResult = await this.csound.compileOrc(orc);
-
-      if (compileResult !== 0) {
-        throw new Error('Failed to compile orchestra');
+      const compileResult = await this.compileOrchestra(orc);
+      if (!compileResult.success) {
+        throw new Error(compileResult.errorMessage || 'Compilation failed');
      }

-      this.log('Reading score...');
-      await this.csound.readScore(sco);
-
-      this.log('Starting performance...');
-      this.running = true;
-      await this.csound.start();
-
-      this.setupAnalyser();
+      await this.readScore(sco);
+      await this.startPerformance();

    } catch (error) {
      this.running = false;
-      if (this.csound) {
-        try {
-          await this.csound.cleanup();
-        } catch {}
-      }
+      this.compiled = false;
      const errorMsg = error instanceof Error ? error.message : 'Evaluation failed';
      this.error(errorMsg);
      throw error;
    }
  }

+  async setControlChannel(name: string, value: number): Promise<void> {
+    if (!this.csound) {
+      throw new Error('No Csound instance available');
+    }
+
+    await this.csound.setControlChannel(name, value);
+  }
+
+  async getControlChannel(name: string): Promise<number> {
+    if (!this.csound) {
+      throw new Error('No Csound instance available');
+    }
+
+    return await this.csound.getControlChannel(name);
+  }
+
+  async setStringChannel(name: string, value: string): Promise<void> {
+    if (!this.csound) {
+      throw new Error('No Csound instance available');
+    }
+
+    await this.csound.setStringChannel(name, value);
+  }
+
+  async getStringChannel(name: string): Promise<string> {
+    if (!this.csound) {
+      throw new Error('No Csound instance available');
+    }
+
+    return await this.csound.getStringChannel(name);
+  }
+
+  async getTable(tableNumber: number): Promise<Float32Array> {
+    if (!this.csound) {
+      throw new Error('No Csound instance available');
+    }
+
+    return await this.csound.getTable(tableNumber);
+  }
+
+  async setTable(tableNumber: number, data: Float32Array | number[]): Promise<void> {
+    if (!this.csound) {
+      throw new Error('No Csound instance available');
+    }
+
+    const tableData = data instanceof Float32Array ? data : new Float32Array(data);
+    await this.csound.setTable(tableNumber, tableData);
+  }
+
+  async getPerformanceMetrics(): Promise<PerformanceMetrics> {
+    if (!this.csound) {
+      return {
+        kperiodCount: 0,
+        currentTime: 0,
+        isRunning: this.running
+      };
+    }
+
+    try {
+      const currentTime = await this.csound.getCurrentTimeSamples();
+
+      return {
+        kperiodCount: 0,
+        currentTime: currentTime / (await this.csound.getSr()),
+        isRunning: this.running
+      };
+    } catch (error) {
+      return {
+        kperiodCount: 0,
+        currentTime: 0,
+        isRunning: this.running
+      };
+    }
+  }
+
+  async getSampleRate(): Promise<number> {
+    if (!this.csound) {
+      throw new Error('No Csound instance available');
+    }
+    return await this.csound.getSr();
+  }
+
+  async getKsmps(): Promise<number> {
+    if (!this.csound) {
+      throw new Error('No Csound instance available');
+    }
+    return await this.csound.getKsmps();
+  }
+
+  async getOutputChannelCount(): Promise<number> {
+    if (!this.csound) {
+      throw new Error('No Csound instance available');
+    }
+    return await this.csound.getNchnls();
+  }
+
  async stop(): Promise<void> {
    if (!this.csound || !this.running) return;

    try {
-      this.log('Stopping...');
+      this.log('Stopping performance...');
      await this.csound.stop();
-      await this.csound.cleanup();
      this.running = false;
      this.log('Stopped');
    } catch (error) {
@ -118,6 +298,49 @@ export class CsoundEngine {
    }
  }

+  async reset(): Promise<void> {
+    this.log('Resetting Csound...');
+    await this.stop();
+    await this.cleanupInstance();
+    this.compiled = false;
+    await this.ensureCsoundInstance();
+    this.log('Reset complete');
+  }
+
+  private async resetForNewPerformance(): Promise<void> {
+    if (!this.csound) return;
+
+    try {
+      await this.csound.reset();
+      await this.csound.setOption('-odac');
+      this.compiled = false;
+      this.running = false;
+      this.audioNode = null;
+      this.audioContext = null;
+      this.scopeNode = null;
+    } catch (error) {
+      this.log('Reset failed, creating new instance...');
+      await this.cleanupInstance();
+    }
+  }
+
+  private async cleanupInstance(): Promise<void> {
+    if (!this.csound) return;
+
+    try {
+      if (this.running) {
+        await this.csound.stop();
+      }
+      await this.csound.cleanup();
+    } catch (error) {
+      console.error('Cleanup error:', error);
+    } finally {
+      this.csound = null;
+      this.running = false;
+      this.compiled = false;
+    }
+  }
+
  isRunning(): boolean {
    return this.running;
  }
@ -126,6 +349,10 @@ export class CsoundEngine {
    return this.initialized;
  }

+  isCompiled(): boolean {
+    return this.compiled;
+  }
+
  getAudioContext(): AudioContext | null {
    return this.audioContext;
  }
@ -166,10 +393,7 @@ export class CsoundEngine {
  }

  async destroy(): Promise<void> {
-    if (this.running) {
-      await this.stop();
-    }
-    this.csound = null;
+    await this.cleanupInstance();
    this.initialized = false;
  }
 }
--- a/src/lib/csound/index.ts
+++ b/src/lib/csound/index.ts
@ -1,4 +1,9 @@
 export { CsoundEngine } from './engine';
-export type { CsoundEngineOptions } from './engine';
+export type {
+  CsoundEngineOptions,
+  InstanceMode,
+  PerformanceMetrics,
+  CompilationResult
+} from './engine';
 export { createCsoundStore, createCsoundDerivedStores } from './store';
 export type { LogEntry, CsoundStore } from './store';
--- a/src/lib/csound/store.ts
+++ b/src/lib/csound/store.ts
@ -1,5 +1,5 @@
 import { writable, derived, get } from 'svelte/store';
-import { CsoundEngine } from './engine';
+import { CsoundEngine, type InstanceMode, type PerformanceMetrics, type CompilationResult } from './engine';

 export interface LogEntry {
  timestamp: Date;
@ -9,6 +9,7 @@ export interface LogEntry {

 interface CsoundState {
  initialized: boolean;
+  compiled: boolean;
  running: boolean;
  logs: LogEntry[];
 }
@ -16,8 +17,23 @@ interface CsoundState {
 export interface CsoundStore {
  subscribe: (run: (value: CsoundState) => void) => () => void;
  init: () => Promise<void>;
-  evaluate: (code: string) => Promise<void>;
+  compileOrchestra: (orchestra: string) => Promise<CompilationResult>;
+  startPerformance: () => Promise<void>;
+  readScore: (score: string) => Promise<void>;
+  sendScoreEvent: (event: string) => Promise<void>;
+  evaluate: (code: string, forceNewInstance?: boolean) => Promise<void>;
  stop: () => Promise<void>;
+  reset: () => Promise<void>;
+  setControlChannel: (name: string, value: number) => Promise<void>;
+  getControlChannel: (name: string) => Promise<number>;
+  setStringChannel: (name: string, value: string) => Promise<void>;
+  getStringChannel: (name: string) => Promise<string>;
+  getTable: (tableNumber: number) => Promise<Float32Array>;
+  setTable: (tableNumber: number, data: Float32Array | number[]) => Promise<void>;
+  getPerformanceMetrics: () => Promise<PerformanceMetrics>;
+  getSampleRate: () => Promise<number>;
+  getKsmps: () => Promise<number>;
+  getOutputChannelCount: () => Promise<number>;
  clearLogs: () => void;
  getAudioContext: () => AudioContext | null;
  getAnalyserNode: () => AnalyserNode | null;
@ -25,9 +41,10 @@ export interface CsoundStore {
  destroy: () => Promise<void>;
 }

-export function createCsoundStore(): CsoundStore {
+export function createCsoundStore(instanceMode?: InstanceMode): CsoundStore {
  const initialState: CsoundState = {
    initialized: false,
+    compiled: false,
    running: false,
    logs: []
  };
@ -54,9 +71,13 @@ export function createCsoundStore(): CsoundStore {
        engine = new CsoundEngine({
          onMessage: (msg) => addLog(msg, 'info'),
          onError: (err) => addLog(err, 'error'),
+          onPerformanceEnd: () => {
+            update(state => ({ ...state, running: false }));
+          },
          onAnalyserNodeCreated: (node) => {
            analyserNodeListeners.forEach(listener => listener(node));
-          }
+          },
+          instanceMode
        });

        await engine.init();
@ -72,20 +93,70 @@ export function createCsoundStore(): CsoundStore {
      }
    },

-    async evaluate(code: string) {
+    async compileOrchestra(orchestra: string): Promise<CompilationResult> {
      if (!engine) {
-        throw new Error('CSound engine not initialized');
+        throw new Error('Csound engine not initialized');
      }

      try {
+        const result = await engine.compileOrchestra(orchestra);
+        update(state => ({ ...state, compiled: result.success }));
+        return result;
+      } catch (error) {
+        const errorMsg = error instanceof Error ? error.message : 'Compilation failed';
+        addLog(errorMsg, 'error');
+        throw error;
+      }
+    },
+
+    async startPerformance() {
+      if (!engine) {
+        throw new Error('Csound engine not initialized');
+      }
+
+      try {
+        await engine.startPerformance();
        update(state => ({ ...state, running: true }));
-        await engine.evaluateCode(code);
+      } catch (error) {
+        const errorMsg = error instanceof Error ? error.message : 'Failed to start performance';
+        addLog(errorMsg, 'error');
+        throw error;
+      }
+    },
+
+    async readScore(score: string) {
+      if (!engine) {
+        throw new Error('Csound engine not initialized');
+      }
+
+      await engine.readScore(score);
+    },
+
+    async sendScoreEvent(event: string) {
+      if (!engine) {
+        throw new Error('Csound engine not initialized');
+      }
+
+      await engine.sendScoreEvent(event);
+    },
+
+    async evaluate(code: string, forceNewInstance = false) {
+      if (!engine) {
+        throw new Error('Csound engine not initialized');
+      }
+
+      try {
+        await engine.evaluateCode(code, forceNewInstance);
+        update(state => ({
+          ...state,
+          compiled: engine!.isCompiled(),
+          running: engine!.isRunning()
+        }));
      } catch (error) {
        const errorMsg = error instanceof Error ? error.message : 'Evaluation failed';
        addLog(errorMsg, 'error');
+        update(state => ({ ...state, compiled: false, running: false }));
        throw error;
-      } finally {
-        update(state => ({ ...state, running: false }));
      }
    },

@ -101,6 +172,88 @@ export function createCsoundStore(): CsoundStore {
      }
    },

+    async reset() {
+      if (!engine) return;
+
+      try {
+        await engine.reset();
+        update(state => ({ ...state, compiled: false, running: false }));
+      } catch (error) {
+        const errorMsg = error instanceof Error ? error.message : 'Reset failed';
+        addLog(errorMsg, 'error');
+      }
+    },
+
+    async setControlChannel(name: string, value: number) {
+      if (!engine) {
+        throw new Error('Csound engine not initialized');
+      }
+      await engine.setControlChannel(name, value);
+    },
+
+    async getControlChannel(name: string): Promise<number> {
+      if (!engine) {
+        throw new Error('Csound engine not initialized');
+      }
+      return await engine.getControlChannel(name);
+    },
+
+    async setStringChannel(name: string, value: string) {
+      if (!engine) {
+        throw new Error('Csound engine not initialized');
+      }
+      await engine.setStringChannel(name, value);
+    },
+
+    async getStringChannel(name: string): Promise<string> {
+      if (!engine) {
+        throw new Error('Csound engine not initialized');
+      }
+      return await engine.getStringChannel(name);
+    },
+
+    async getTable(tableNumber: number): Promise<Float32Array> {
+      if (!engine) {
+        throw new Error('Csound engine not initialized');
+      }
+      return await engine.getTable(tableNumber);
+    },
+
+    async setTable(tableNumber: number, data: Float32Array | number[]) {
+      if (!engine) {
+        throw new Error('Csound engine not initialized');
+      }
+      await engine.setTable(tableNumber, data);
+    },
+
+    async getPerformanceMetrics(): Promise<PerformanceMetrics> {
+      if (!engine) {
+        throw new Error('Csound engine not initialized');
+      }
+      return await engine.getPerformanceMetrics();
+    },
+
+    async getSampleRate(): Promise<number> {
+      if (!engine) {
+        throw new Error('Csound engine not initialized');
+      }
+      return await engine.getSampleRate();
+    },
+
+    async getKsmps(): Promise<number> {
+      if (!engine) {
+        throw new Error('Csound engine not initialized');
+      }
+      return await engine.getKsmps();
+    },
+
+    async getOutputChannelCount(): Promise<number> {
+      if (!engine) {
+        throw new Error('Csound engine not initialized');
+      }
+      return await engine.getOutputChannelCount();
+    },
+
    clearLogs() {
      update(state => ({
        ...state,
@ -142,6 +295,7 @@ export function createCsoundDerivedStores(csound: CsoundStore) {
  return {
    logs: derived(csound, $csound => $csound.logs),
    initialized: derived(csound, $csound => $csound.initialized),
+    compiled: derived(csound, $csound => $csound.compiled),
    running: derived(csound, $csound => $csound.running)
  };
 }