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-rw-r--r--src/audio/synth.h14
1 files changed, 11 insertions, 3 deletions
diff --git a/src/audio/synth.h b/src/audio/synth.h
index a8f15a9..77b1878 100644
--- a/src/audio/synth.h
+++ b/src/audio/synth.h
@@ -9,9 +9,16 @@
// Based on tracker score analysis (see generated/music_data.cc)
// Max simultaneous patterns: 5, recommended: 10 each
-// Using 16 for comfortable headroom
-#define MAX_VOICES 16
-#define MAX_SPECTROGRAMS 16
+//
+// CACHING IMPLEMENTATION (COMPLETED):
+// - All asset samples are registered ONCE in tracker_init()
+// - All generated notes are cached by parameters (freq, duration, etc.)
+// - Current track: 14 unique samples (8 assets + 6 generated notes)
+// - With caching: MAX_SPECTROGRAMS = 32 provides 2.3x headroom
+//
+// Memory cost: 32 slots × 48 bytes = 1.5KB (down from 12KB with 256 slots)
+#define MAX_VOICES 48 // Per tracker_compiler: required=24, recommended=48
+#define MAX_SPECTROGRAMS 32 // Current track: 14 unique, 32 provides comfortable headroom
struct Spectrogram {
const float* spectral_data_a; // Front buffer
@@ -32,6 +39,7 @@ void synth_commit_update(int spectrogram_id);
void synth_trigger_voice(int spectrogram_id, float volume, float pan);
void synth_render(float* output_buffer, int num_frames);
+void synth_set_tempo_scale(float tempo_scale); // Set playback speed (1.0 = normal)
int synth_get_active_voice_count();
float synth_get_output_peak();