Changeset 2426:122c29dbcd87 in roaraudio for include/libroardsp

Timestamp:

08/19/09 05:12:09 (15 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

added very basic code for synth

File:

• include/libroardsp/synth.h (modified) (1 diff)

include/libroardsp/synth.h

@@ -38 +38 @@
 #include "libroardsp.h"
 
+#define ROAR_SYNTH_FUNC_TYPE(name) float (*name)(float t, struct roar_synth_state * state)
+#define ROAR_SYNTH_FUNC_CAST(name) ((ROAR_SYNTH_FUNC_TYPE()) name)
+
+// SYNF -> Synthesis Function
+#define ROAR_SYNTH_SYNF_SINE ROAR_SYNTH_FUNC_CAST(sinf)
+
+struct roar_synth_state {
+ int rate;
+ struct roar_note_octave * note;
+ ROAR_SYNTH_FUNC_TYPE(func);
+ size_t pcmoffset;
+};
+
+int roar_synth_init(struct roar_synth_state * state, struct roar_note_octave * note, int rate);
+int roar_synth_set_offset(struct roar_synth_state * state, size_t offset);
+int roar_synth_set_func  (struct roar_synth_state * state, ROAR_SYNTH_FUNC_TYPE(func));
+
+int roar_synth_pcmout_i16n(struct roar_synth_state * state, int16_t * out, size_t frames, int channels);
+int roar_synth_pcmout_i161(struct roar_synth_state * state, int16_t * out, size_t frames);
+
 #endif