ajout effets audio

Appli/Core/Inc/fx_overdrive.h

@@ -0,0 +1,22 @@
+#ifndef FX_OVERDRIVE_H
+#define FX_OVERDRIVE_H
+
+#include <stdbool.h>
+
+typedef struct
+{
+    bool  enabled;
+    float drive;   /* 0.0 a 1.0 : quantite de distorsion */
+    float tone;    /* 0.0 (sombre) a 1.0 (brillant) : filtre passe-bas post-distorsion */
+    float level;   /* gain de compensation en sortie */
+} FxOverdriveParams;
+
+typedef struct
+{
+    float tone_lp_state;
+} FxOverdriveState;
+
+void  FxOverdrive_Init(FxOverdriveState *state, FxOverdriveParams *params);
+float FxOverdrive_Process(FxOverdriveState *state, const FxOverdriveParams *params, float input);
+
+#endif /* FX_OVERDRIVE_H */