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src/effects/pitchshift.h: add aubio_pitchshift_get_latency

--- a/src/effects/pitchshift.c

+++ b/src/effects/pitchshift.c

@@ -97,6 +97,10 @@

   AUBIO_FREE (p);

 }

+uint_t aubio_pitchshift_get_latency (aubio_pitchshift_t * p) {

+  return rubberband_get_latency(p->rb);

+}

+

 uint_t

 aubio_pitchshift_set_pitchscale (aubio_pitchshift_t * p, smpl_t pitchscale)

 {

@@ -185,6 +189,10 @@

 }

 smpl_t aubio_pitchshift_get_transpose (aubio_pitchshift_t * o UNUSED) {

+  return 0.;

+}

+

+uint_t aubio_pitchshift_get_latency (aubio_pitchshift_t * o UNUSED) {

   return 0.;

 }

--- a/src/effects/pitchshift.h

+++ b/src/effects/pitchshift.h

@@ -67,6 +67,15 @@

 aubio_pitchshift_t *new_aubio_pitchshift (const char_t * method,

     smpl_t pitchscale, uint_t hop_size, uint_t samplerate);

+/** get the latency of the pitch shifting object, in samples

+

+  \param o pitch shifting object as returned by ::new_aubio_pitchshift()

+

+  \return latency of the pitch shifting object in samples

+

+*/

+uint_t aubio_pitchshift_get_latency (aubio_pitchshift_t * o);

+

 /** set the pitch scale of the pitch shifting object

   \param o pitch shifting object as returned by new_aubio_pitchshift()

-- 

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