Add in tree aubio

Signed-off-by: falkTX <falktx@falktx.com>

deps/aubio/src/temporal/resampler.c

@@ -0,0 +1,100 @@
+/*
+  Copyright (C) 2003-2009 Paul Brossier <piem@aubio.org>
+
+  This file is part of aubio.
+
+  aubio is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  aubio is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with aubio.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include "aubio_priv.h"
+#include "fvec.h"
+#include "temporal/resampler.h"
+
+#ifdef HAVE_SAMPLERATE
+
+#if HAVE_AUBIO_DOUBLE
+#error "Should not use libsamplerate with aubio in double precision"
+#endif
+
+#include <samplerate.h>         /* from libsamplerate */
+
+struct _aubio_resampler_t
+{
+  SRC_DATA *proc;
+  SRC_STATE *stat;
+  smpl_t ratio;
+  uint_t type;
+};
+
+aubio_resampler_t *
+new_aubio_resampler (smpl_t ratio, uint_t type)
+{
+  aubio_resampler_t *s = AUBIO_NEW (aubio_resampler_t);
+  int error = 0;
+  s->stat = src_new (type, 1, &error);  /* only one channel */
+  if (error) {
+    AUBIO_ERR ("Failed creating resampler: %s\n", src_strerror (error));
+    del_aubio_resampler(s);
+    return NULL;
+  }
+  s->proc = AUBIO_NEW (SRC_DATA);
+  s->ratio = ratio;
+  return s;
+}
+
+void
+del_aubio_resampler (aubio_resampler_t * s)
+{
+  if (s->stat) src_delete (s->stat);
+  AUBIO_FREE (s->proc);
+  AUBIO_FREE (s);
+}
+
+void
+aubio_resampler_do (aubio_resampler_t * s, const fvec_t * input, fvec_t * output)
+{
+  s->proc->input_frames = input->length;
+  s->proc->output_frames = output->length;
+  s->proc->src_ratio = (double) s->ratio;
+  /* make SRC_PROC data point to input outputs */
+  s->proc->data_in = (float *) input->data;
+  s->proc->data_out = (float *) output->data;
+  /* do resampling */
+  src_process (s->stat, s->proc);
+}
+
+#else
+struct _aubio_resampler_t
+{
+  void *dummy;
+};
+
+aubio_resampler_t *
+new_aubio_resampler (smpl_t ratio UNUSED, uint_t type UNUSED)
+{
+  AUBIO_ERR ("aubio was not compiled with libsamplerate\n");
+  return NULL;
+}
+
+void
+del_aubio_resampler (aubio_resampler_t * s UNUSED)
+{
+}
+
+void
+aubio_resampler_do (aubio_resampler_t * s UNUSED, const fvec_t * input UNUSED, fvec_t * output UNUSED)
+{
+}
+#endif /* HAVE_SAMPLERATE */