Changeset 2432:d84ffcebf730 in roaraudio for libroardsp

Timestamp:

08/19/09 15:35:53 (15 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

added support to set volume

File:

• libroardsp/synth.c (modified) (3 diffs)

libroardsp/synth.c

@@ -36 +36 @@
  memset(state, 0, sizeof(struct roar_synth_state));
 
- state->note = note; // NULL is valid here!
- state->rate = rate;
+ state->note   = note; // NULL is valid here!
+ state->rate   = rate;
+ state->volume = 1;
 
  state->func = ROAR_SYNTH_SYNF_SINE;
@@ -59 +60 @@
 
  state->func = func;
+
+ return 0;
+}
+
+int roar_synth_set_volume(struct roar_synth_state * state, float volume) {
+ _CHECK_BASIC();
+
+ state->volume = volume;
 
  return 0;
@@ -90 +99 @@
 
  for (i = 0; i < frames; i++, t_cur += t_step) {
-  out[i] = 32767.0*state->func(2.0*M_PI*freq*t_cur, state);
+  out[i] = 32767.0*state->volume*state->func(2.0*M_PI*freq*t_cur, state);
  }