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// This file is part of the 64k demo project.
// AudioEngine: Unified audio subsystem manager.
// Eliminates initialization order dependencies between synth and tracker.
#pragma once
#include "audio/spectrogram_resource_manager.h"
#include "audio/synth.h"
#include "audio/tracker.h"
// Unified audio engine managing synth, tracker, and resources
class AudioEngine {
public:
// Lifecycle
void init();
void shutdown();
void reset(); // Clear all state (for seeking/rewinding)
// Music data loading
void load_music_data(const TrackerScore* score,
const NoteParams* samples,
const AssetId* sample_assets,
uint32_t sample_count);
// Update loop
void update(float music_time);
#if !defined(STRIP_ALL)
// Timeline seeking (debugging only)
void seek(float target_time);
float get_time() const { return current_time_; }
#endif /* !defined(STRIP_ALL) */
// Synth interface (delegates to internal synth)
void render(float* output_buffer, int num_frames);
int get_active_voice_count() const;
// Tracker interface
void tracker_reset();
// Resource access
SpectrogramResourceManager* get_resource_manager() { return &resource_mgr_; }
private:
// Trigger a sample (loads resource if needed, registers with synth)
void trigger_sample(int sample_id, float volume, float pan);
// Get or create synth ID for a sample
int get_or_register_synth_id(int sample_id);
#if !defined(STRIP_ALL)
// Seeking support
void prewarm_for_time_range(float start_time, float end_time);
void update_silent(float music_time); // Update without triggering audio
#endif
SpectrogramResourceManager resource_mgr_;
// NOTE: For now, synth and tracker are global C functions (not members)
// Future refactoring will convert them to member objects
// Mapping: sample_id → synth_id (lazy registration)
int sample_to_synth_id_[MAX_SPECTROGRAM_RESOURCES];
float current_time_ = 0.0f;
bool initialized_ = false;
};
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