1 files changed, 231 insertions, 0 deletions
diff --git a/src/io/sink_sndfile.c b/src/io/sink_sndfile.c
new file mode 100644
index 0000000..99392c3
--- /dev/null
+++ b/src/io/sink_sndfile.c
@@ -0,0 +1,231 @@
+/*
+  Copyright (C) 2012-2014 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 "config.h"
+
+#ifdef HAVE_SNDFILE
+
+#include <sndfile.h>
+
+#include "aubio_priv.h"
+#include "fvec.h"
+#include "fmat.h"
+#include "io/sink_sndfile.h"
+
+#define MAX_CHANNELS 6
+#define MAX_SIZE 4096
+
+#if !HAVE_AUBIO_DOUBLE
+#define aubio_sf_write_smpl sf_write_float
+#else /* HAVE_AUBIO_DOUBLE */
+#define aubio_sf_write_smpl sf_write_double
+#endif /* HAVE_AUBIO_DOUBLE */
+
+struct _aubio_sink_sndfile_t {
+  uint_t samplerate;
+  uint_t channels;
+  char_t *path;
+
+  uint_t max_size;
+
+  SNDFILE *handle;
+  uint_t scratch_size;
+  smpl_t *scratch_data;
+};
+
+uint_t aubio_sink_sndfile_open(aubio_sink_sndfile_t *s);
+
+aubio_sink_sndfile_t * new_aubio_sink_sndfile(const char_t * path, uint_t samplerate) {
+  aubio_sink_sndfile_t * s = AUBIO_NEW(aubio_sink_sndfile_t);
+  s->max_size = MAX_SIZE;
+
+  if (path == NULL) {
+    AUBIO_ERR("sink_sndfile: Aborted opening null path\n");
+    return NULL;
+  }
+
+  if (s->path) AUBIO_FREE(s->path);
+  s->path = AUBIO_ARRAY(char_t, strnlen(path, PATH_MAX) + 1);
+  strncpy(s->path, path, strnlen(path, PATH_MAX) + 1);
+
+  s->samplerate = 0;
+  s->channels = 0;
+
+  // negative samplerate given, abort
+  if ((sint_t)samplerate < 0) goto beach;
+  // zero samplerate given. do not open yet
+  if ((sint_t)samplerate == 0) return s;
+
+  s->samplerate = samplerate;
+  s->channels = 1;
+
+  if (aubio_sink_sndfile_open(s) != AUBIO_OK) {;
+    goto beach;
+  }
+  return s;
+
+beach:
+  del_aubio_sink_sndfile(s);
+  return NULL;
+}
+
+uint_t aubio_sink_sndfile_preset_samplerate(aubio_sink_sndfile_t *s, uint_t samplerate)
+{
+  if ((sint_t)(samplerate) <= 0) return AUBIO_FAIL;
+  s->samplerate = samplerate;
+  // automatically open when both samplerate and channels have been set
+  if (s->samplerate != 0 && s->channels != 0) {
+    return aubio_sink_sndfile_open(s);
+  }
+  return AUBIO_OK;
+}
+
+uint_t aubio_sink_sndfile_preset_channels(aubio_sink_sndfile_t *s, uint_t channels)
+{
+  if ((sint_t)(channels) <= 0) return AUBIO_FAIL;
+  s->channels = channels;
+  // automatically open when both samplerate and channels have been set
+  if (s->samplerate != 0 && s->channels != 0) {
+    return aubio_sink_sndfile_open(s);
+  }
+  return AUBIO_OK;
+}
+
+uint_t aubio_sink_sndfile_get_samplerate(const aubio_sink_sndfile_t *s)
+{
+  return s->samplerate;
+}
+
+uint_t aubio_sink_sndfile_get_channels(const aubio_sink_sndfile_t *s)
+{
+  return s->channels;
+}
+
+uint_t aubio_sink_sndfile_open(aubio_sink_sndfile_t *s) {
+  /* set output format */
+  SF_INFO sfinfo;
+  AUBIO_MEMSET(&sfinfo, 0, sizeof (sfinfo));
+  sfinfo.samplerate = s->samplerate;
+  sfinfo.channels   = s->channels;
+  sfinfo.format     = SF_FORMAT_WAV | SF_FORMAT_PCM_16;
+
+  /* try creating the file */
+  s->handle = sf_open (s->path, SFM_WRITE, &sfinfo);
+
+  if (s->handle == NULL) {
+    /* show libsndfile err msg */
+    AUBIO_ERR("sink_sndfile: Failed opening %s. %s\n", s->path, sf_strerror (NULL));
+    return AUBIO_FAIL;
+  }
+
+  s->scratch_size = s->max_size*s->channels;
+  /* allocate data for de/interleaving reallocated when needed. */
+  if (s->scratch_size >= MAX_SIZE * MAX_CHANNELS) {
+    AUBIO_ERR("sink_sndfile: %d x %d exceeds maximum aubio_sink_sndfile buffer size %d\n",
+        s->max_size, s->channels, MAX_CHANNELS * MAX_CHANNELS);
+    return AUBIO_FAIL;
+  }
+  s->scratch_data = AUBIO_ARRAY(smpl_t,s->scratch_size);
+
+  return AUBIO_OK;
+}
+
+void aubio_sink_sndfile_do(aubio_sink_sndfile_t *s, fvec_t * write_data, uint_t write){
+  uint_t i, j, channels = s->channels;
+  int nsamples = 0;
+  smpl_t *pwrite;
+  sf_count_t written_frames;
+
+  if (write > s->max_size) {
+    AUBIO_WRN("sink_sndfile: trying to write %d frames, but only %d can be written at a time\n",
+      write, s->max_size);
+    write = s->max_size;
+  }
+
+  nsamples = channels * write;
+
+  /* interleaving data  */
+  for ( i = 0; i < channels; i++) {
+    pwrite = (smpl_t *)write_data->data;
+    for (j = 0; j < write; j++) {
+      s->scratch_data[channels*j+i] = pwrite[j];
+    }
+  }
+
+  written_frames = aubio_sf_write_smpl (s->handle, s->scratch_data, nsamples);
+  if (written_frames/channels != write) {
+    AUBIO_WRN("sink_sndfile: trying to write %d frames to %s, but only %d could be written\n",
+      write, s->path, (uint_t)written_frames);
+  }
+  return;
+}
+
+void aubio_sink_sndfile_do_multi(aubio_sink_sndfile_t *s, fmat_t * write_data, uint_t write){
+  uint_t i, j, channels = s->channels;
+  int nsamples = 0;
+  smpl_t *pwrite;
+  sf_count_t written_frames;
+
+  if (write > s->max_size) {
+    AUBIO_WRN("sink_sndfile: trying to write %d frames, but only %d can be written at a time\n",
+      write, s->max_size);
+    write = s->max_size;
+  }
+
+  nsamples = channels * write;
+
+  /* interleaving data  */
+  for ( i = 0; i < write_data->height; i++) {
+    pwrite = (smpl_t *)write_data->data[i];
+    for (j = 0; j < write; j++) {
+      s->scratch_data[channels*j+i] = pwrite[j];
+    }
+  }
+
+  written_frames = aubio_sf_write_smpl (s->handle, s->scratch_data, nsamples);
+  if (written_frames/channels != write) {
+    AUBIO_WRN("sink_sndfile: trying to write %d frames to %s, but only %d could be written\n",
+      write, s->path, (uint_t)written_frames);
+  }
+  return;
+}
+
+uint_t aubio_sink_sndfile_close (aubio_sink_sndfile_t *s) {
+  if (!s->handle) {
+    return AUBIO_FAIL;
+  }
+  if (sf_close(s->handle)) {
+    AUBIO_ERR("sink_sndfile: Error closing file %s: %s", s->path, sf_strerror (NULL));
+    return AUBIO_FAIL;
+  }
+  s->handle = NULL;
+  return AUBIO_OK;
+}
+
+void del_aubio_sink_sndfile(aubio_sink_sndfile_t * s){
+  if (!s) return;
+  if (s->path) AUBIO_FREE(s->path);
+  aubio_sink_sndfile_close(s);
+  AUBIO_FREE(s->scratch_data);
+  AUBIO_FREE(s);
+}
+
+#endif /* HAVE_SNDFILE */