codal_port/modaudio: Round up AudioFrame size to nearest 32.

Signed-off-by: Damien George <[email protected]>
microbit-foundation · Jan 18, 2024 · c70611c · c70611c
1 parent ad11e7a
commit c70611c
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/codal_port/modaudio.c b/src/codal_port/modaudio.c
@@ -343,6 +343,8 @@ STATIC mp_obj_t microbit_audio_frame_new(const mp_obj_type_t *type_in, size_t n_
         mp_raise_ValueError(MP_ERROR_TEXT("size out of bounds"));
     } else {
         size = args[ARG_duration].u_int * rate / 1000;
+        // Round up the size to the nearest AUDIO_CHUNK_SIZE.
+        size = (size + AUDIO_CHUNK_SIZE - 1) & ~(AUDIO_CHUNK_SIZE - 1);
     }
 
     return microbit_audio_frame_make_new(size, rate);