From 12816810855883472ecab454f9c0d08d66f0ae52 Mon Sep 17 00:00:00 2001 From: skal Date: Thu, 5 Feb 2026 20:18:28 +0100 Subject: feat(audio): Complete Task #56 - Audio Lifecycle Refactor (All Phases) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit SUMMARY ======= Successfully completed comprehensive 4-phase refactor of audio subsystem to eliminate fragile initialization order dependency between synth and tracker. This addresses long-standing architectural fragility where tracker required synth to be initialized first or spectrograms would be cleared. IMPLEMENTATION ============== Phase 1: Design & Prototype - Created AudioEngine class as unified audio subsystem manager - Created SpectrogramResourceManager for lazy resource loading - Manages synth, tracker, and resource lifecycle - Comprehensive test suite (test_audio_engine.cc) Phase 2: Test Migration - Migrated all tracker tests to use AudioEngine - Updated: test_tracker.cc, test_tracker_timing.cc, test_variable_tempo.cc, test_wav_dump.cc - Pattern: Replace synth_init() + tracker_init() with engine.init() - All 20 tests pass (100% pass rate) Phase 3: Production Integration - Fixed pre-existing demo crash (procedural texture loading) - Updated flash_cube_effect.cc and hybrid_3d_effect.cc - Migrated main.cc to use AudioEngine - Replaced tracker_update() calls with engine.update() Phase 4: Cleanup & Documentation - Removed synth_init() call from audio_init() (backwards compatibility) - Added AudioEngine usage guide to HOWTO.md - Added audio initialization protocols to CONTRIBUTING.md - Binary size verification: <500 bytes overhead (acceptable) RESULTS ======= ✅ All 20 tests pass (100% pass rate) ✅ Demo runs successfully with audio and visuals ✅ Initialization order fragility eliminated ✅ Binary size impact minimal (<500 bytes) ✅ Clear documentation for future development ✅ No backwards compatibility issues DOCUMENTATION UPDATES ===================== - Updated TODO.md: Moved Task #56 to "Recently Completed" - Updated PROJECT_CONTEXT.md: Added AudioEngine milestone - Updated HOWTO.md: Added "Audio System" section with usage examples - Updated CONTRIBUTING.md: Added audio initialization protocols CODE FORMATTING =============== Applied clang-format to all source files per project standards. FILES CREATED ============= - src/audio/audio_engine.h (new) - src/audio/audio_engine.cc (new) - src/audio/spectrogram_resource_manager.h (new) - src/audio/spectrogram_resource_manager.cc (new) - src/tests/test_audio_engine.cc (new) KEY FILES MODIFIED ================== - src/main.cc (migrated to AudioEngine) - src/audio/audio.cc (removed backwards compatibility) - All tracker test files (migrated to AudioEngine) - doc/HOWTO.md (added usage guide) - doc/CONTRIBUTING.md (added protocols) - TODO.md (marked complete) - PROJECT_CONTEXT.md (added milestone) TECHNICAL DETAILS ================= AudioEngine Design Philosophy: - Manages initialization order (synth before tracker) - Owns SpectrogramResourceManager for lazy loading - Does NOT wrap every synth API - direct calls remain valid - Provides lifecycle management, not a complete facade What to Use AudioEngine For: - Initialization: engine.init() instead of separate init calls - Updates: engine.update(music_time) instead of tracker_update() - Cleanup: engine.shutdown() for proper teardown - Seeking: engine.seek(time) for timeline navigation (debug only) Direct Synth API Usage (Still Valid): - synth_register_spectrogram() - Register samples - synth_trigger_voice() - Trigger playback - synth_get_output_peak() - Get audio levels - synth_render() - Low-level rendering SIZE IMPACT ANALYSIS ==================== Debug build: 6.2MB Size-optimized build: 5.0MB Stripped build: 5.0MB AudioEngine overhead: <500 bytes (0.01% of total) BACKWARD COMPATIBILITY ====================== No breaking changes. Tests that need low-level control can still call synth_init() directly. AudioEngine is the recommended pattern for production code and tests requiring both synth and tracker. handoff(Claude): Task #56 COMPLETE - All 4 phases finished. Audio initialization is now robust, well-documented, and properly tested. The fragile initialization order dependency has been eliminated. Co-Authored-By: Claude Sonnet 4.5 --- TODO.md | 19 +++++++------------ 1 file changed, 7 insertions(+), 12 deletions(-) (limited to 'TODO.md') diff --git a/TODO.md b/TODO.md index fbe4060..0170cec 100644 --- a/TODO.md +++ b/TODO.md @@ -4,6 +4,13 @@ This file tracks prioritized tasks with detailed attack plans. ## Recently Completed (February 5, 2026) +- [x] **Audio Lifecycle Refactor (Task #56)**: + - [x] **Phase 1: Design & Prototype**: Created `AudioEngine` class and `SpectrogramResourceManager` to manage audio subsystem initialization and resource loading with lazy loading strategy. + - [x] **Phase 2: Test Migration**: Migrated all tracker-related tests (`test_tracker.cc`, `test_tracker_timing.cc`, `test_variable_tempo.cc`, `test_wav_dump.cc`) to use AudioEngine instead of direct synth/tracker initialization. + - [x] **Phase 3: Production Integration**: Updated `main.cc` to use AudioEngine, eliminating initialization order fragility in production code. Fixed pre-existing demo crash (procedural texture loading). + - [x] **Phase 4: Cleanup & Documentation**: Removed backwards compatibility (synth_init() from audio_init()), updated HOWTO.md and CONTRIBUTING.md with AudioEngine usage patterns and best practices. + - **Result**: Initialization order dependency eliminated. All 20 tests pass. Binary size impact <500 bytes. Demo runs successfully. + - [x] **Physics & Collision (Task #49)**: - [x] **CPU-Side SDF Library**: Implemented `sdSphere`, `sdBox`, `sdTorus`, `sdPlane` in `src/3d/sdf_cpu.h` using `mini_math.h`. Added `calc_normal` for numerical gradients. - [x] **BVH Construction**: Implemented `BVHNode` and `BVHBuilder` in `src/3d/bvh.h/cc`. Optimized broad-phase collision queries with `BVH::Query`. @@ -113,18 +120,6 @@ This file tracks prioritized tasks with detailed attack plans. - [x] **Enhanced Procedural Noise:** Implemented a multi-octave Value Noise generator for higher-quality skybox textures. - [x] **Scene Integrity:** Restored proper object indexing and removed redundant geometry, ensuring the floor grid and objects render correctly. -## Priority 1.5: Audio System Architecture (Task #56) -**Goal:** Refactor tracker-synth relationship to eliminate fragile initialization order dependency. - -- [ ] **Task #56: Audio Lifecycle Refactor** - - **Problem:** Current system requires synth_init() before tracker_init() or spectrograms get cleared - - **Impact:** Fragile, hard to test, prevents composition, causes subtle bugs - - **Proposed Solution:** Unified AudioEngine class that manages synth and tracker as members - - **See:** `doc/AUDIO_LIFECYCLE_REFACTOR.md` for detailed design options and implementation plan - - **Effort:** 2-3 weeks (incremental migration path available) - - **Size Impact:** ~500 bytes (acceptable for robustness gain) - - **Priority:** Medium (current workaround functional but fragile) - ## Priority 2: 3D System Enhancements (Task #18) **Goal:** Establish a pipeline for importing complex 3D scenes to replace hardcoded geometry. - [ ] **Task #18.0: Basic OBJ Asset Pipeline** (New) -- cgit v1.2.3