/*  Copyright (C) 2012 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" #ifdef HAVE_SNDFILE #include <sndfile.h> #include "fvec.h"#include "fmat.h"#include "ioutils.h"#include "source_sndfile.h" #include "temporal/resampler.h" #define MAX_SIZE 4096#define MAX_SAMPLES AUBIO_MAX_CHANNELS * MAX_SIZE #if !HAVE_AUBIO_DOUBLE#define aubio_sf_read_smpl sf_read_float#else /* HAVE_AUBIO_DOUBLE */#define aubio_sf_read_smpl sf_read_double#endif /* HAVE_AUBIO_DOUBLE */ struct _aubio_source_sndfile_t {  uint_t hop_size;  uint_t samplerate;  uint_t channels;   // some data about the file  char_t *path;  SNDFILE *handle;  int input_samplerate;  int input_channels;  int input_format;  int duration;   // resampling stuff  smpl_t ratio;  uint_t input_hop_size;#ifdef HAVE_SAMPLERATE  aubio_resampler_t **resamplers;  fvec_t *input_data;  fmat_t *input_mat;#endif /* HAVE_SAMPLERATE */   // some temporary memory for sndfile to write at  uint_t scratch_size;  smpl_t *scratch_data;}; aubio_source_sndfile_t * new_aubio_source_sndfile(const char_t * path, uint_t samplerate, uint_t hop_size) {  aubio_source_sndfile_t * s = AUBIO_NEW(aubio_source_sndfile_t);  SF_INFO sfinfo;   if (path == NULL) {    AUBIO_ERR("source_sndfile: Aborted opening null path\n");    goto beach;  }  if ((sint_t)samplerate < 0) {    AUBIO_ERR("source_sndfile: Can not open %s with samplerate %d\n", path, samplerate);    goto beach;  }  if ((sint_t)hop_size <= 0) {    AUBIO_ERR("source_sndfile: Can not open %s with hop_size %d\n", path, hop_size);    goto beach;  }   s->hop_size = hop_size;  s->channels = 1;   s->path = AUBIO_ARRAY(char_t, strnlen(path, PATH_MAX) + 1);  strncpy(s->path, path, strnlen(path, PATH_MAX) + 1);   // try opening the file, getting the info in sfinfo  AUBIO_MEMSET(&sfinfo, 0, sizeof (sfinfo));  s->handle = sf_open (s->path, SFM_READ, &sfinfo);   if (s->handle == NULL) {    /* show libsndfile err msg */    AUBIO_ERR("source_sndfile: Failed opening %s (%s)\n", s->path,        sf_strerror (NULL));    goto beach;  }   /* get input specs */  s->input_samplerate = sfinfo.samplerate;  s->input_channels   = sfinfo.channels;  s->input_format     = sfinfo.format;  s->duration         = sfinfo.frames;   if (samplerate == 0) {    s->samplerate = s->input_samplerate;    //AUBIO_DBG("sampling rate set to 0, automagically adjusting to %d\n", samplerate);  } else {    s->samplerate = samplerate;  }  /* compute input block size required before resampling */  s->ratio = s->samplerate/(smpl_t)s->input_samplerate;  s->input_hop_size = (uint_t)FLOOR(s->hop_size / s->ratio + .5);   if (s->input_hop_size * s->input_channels > MAX_SAMPLES) {    AUBIO_ERR("source_sndfile: Not able to process more than %d frames of %d channels\n",        MAX_SAMPLES / s->input_channels, s->input_channels);    goto beach;  } #ifdef HAVE_SAMPLERATE  s->input_data = NULL;  s->input_mat = NULL;  s->resamplers = NULL;  if (s->ratio != 1) {    uint_t i;    s->resamplers = AUBIO_ARRAY(aubio_resampler_t*, s->input_channels);    s->input_data = new_fvec(s->input_hop_size);    s->input_mat = new_fmat(s->input_channels, s->input_hop_size);    for (i = 0; i < (uint_t)s->input_channels; i++) {      s->resamplers[i] = new_aubio_resampler(s->ratio, 4);    }    if (s->ratio > 1) {      // we would need to add a ring buffer for these      if ( (uint_t)FLOOR(s->input_hop_size * s->ratio + .5)  != s->hop_size ) {        AUBIO_ERR("source_sndfile: can not upsample %s from %d to %d\n", s->path,            s->input_samplerate, s->samplerate);        goto beach;      }      AUBIO_WRN("source_sndfile: upsampling %s from %d to %d\n", s->path,          s->input_samplerate, s->samplerate);    }    s->duration = (uint_t)FLOOR(s->duration * s->ratio);  }#else  if (s->ratio != 1) {    AUBIO_ERR("source_sndfile: aubio was compiled without aubio_resampler\n");    goto beach;  }#endif /* HAVE_SAMPLERATE */   /* allocate data for de/interleaving reallocated when needed. */  s->scratch_size = s->input_hop_size * s->input_channels;  s->scratch_data = AUBIO_ARRAY(smpl_t, s->scratch_size);   return s; beach:  //AUBIO_ERR("can not read %s at samplerate %dHz with a hop_size of %d\n",  //    s->path, s->samplerate, s->hop_size);  del_aubio_source_sndfile(s);  return NULL;} void aubio_source_sndfile_do(aubio_source_sndfile_t * s, fvec_t * read_data, uint_t * read){  uint_t i,j, input_channels = s->input_channels;  /* read from file into scratch_data */  uint_t length = aubio_source_validate_input_length("source_sndfile", s->path,      s->hop_size, read_data->length);  sf_count_t read_samples = aubio_sf_read_smpl (s->handle, s->scratch_data,      s->scratch_size);  uint_t read_length = read_samples / s->input_channels;   /* where to store de-interleaved data */  smpl_t *ptr_data;   if (!s->handle) {    AUBIO_ERR("source_sndfile: could not read from %s (file was closed)\n",        s->path);    *read = 0;    return;  } #ifdef HAVE_SAMPLERATE  if (s->ratio != 1) {    ptr_data = s->input_data->data;  } else#endif /* HAVE_SAMPLERATE */  {    read_length = MIN(length, read_length);    ptr_data = read_data->data;  }   /* de-interleaving and down-mixing data  */  for (j = 0; j < read_length; j++) {    ptr_data[j] = 0;    for (i = 0; i < input_channels; i++) {      ptr_data[j] += s->scratch_data[input_channels*j+i];    }    ptr_data[j] /= (smpl_t)input_channels;  } #ifdef HAVE_SAMPLERATE  if (s->resamplers) {    aubio_resampler_do(s->resamplers[0], s->input_data, read_data);  }#endif /* HAVE_SAMPLERATE */   *read = MIN(length, (uint_t)FLOOR(s->ratio * read_length + .5));   aubio_source_pad_output (read_data, *read); } void aubio_source_sndfile_do_multi(aubio_source_sndfile_t * s, fmat_t * read_data, uint_t * read){  uint_t i,j, input_channels = s->input_channels;  /* do actual reading */  uint_t length = aubio_source_validate_input_length("source_sndfile", s->path,      s->hop_size, read_data->length);  uint_t channels = aubio_source_validate_input_channels("source_sndfile",      s->path, s->input_channels, read_data->height);  sf_count_t read_samples = aubio_sf_read_smpl (s->handle, s->scratch_data,      s->scratch_size);  uint_t read_length = read_samples / s->input_channels;   /* where to store de-interleaved data */  smpl_t **ptr_data;   if (!s->handle) {    AUBIO_ERR("source_sndfile: could not read from %s (file was closed)\n",        s->path);    *read = 0;    return;  } #ifdef HAVE_SAMPLERATE  if (s->ratio != 1) {    ptr_data = s->input_mat->data;  } else#endif /* HAVE_SAMPLERATE */  {    read_length = MIN(read_length, length);    ptr_data = read_data->data;  }   for (j = 0; j < read_length; j++) {    for (i = 0; i < channels; i++) {      ptr_data[i][j] = s->scratch_data[j * input_channels + i];    }  } #ifdef HAVE_SAMPLERATE  if (s->resamplers) {    for (i = 0; i < input_channels; i++) {      fvec_t input_chan, read_chan;      input_chan.data = s->input_mat->data[i];      input_chan.length = s->input_mat->length;      read_chan.data = read_data->data[i];      read_chan.length = read_data->length;      aubio_resampler_do(s->resamplers[i], &input_chan, &read_chan);    }  }#endif /* HAVE_SAMPLERATE */   *read = MIN(length, (uint_t)FLOOR(s->ratio * read_length + .5));   aubio_source_pad_multi_output(read_data, input_channels, *read);} uint_t aubio_source_sndfile_get_samplerate(aubio_source_sndfile_t * s) {  return s->samplerate;} uint_t aubio_source_sndfile_get_channels(aubio_source_sndfile_t * s) {  return s->input_channels;} uint_t aubio_source_sndfile_get_duration (const aubio_source_sndfile_t * s) {  if (s && s->duration) {    return s->duration;  }  return 0;} uint_t aubio_source_sndfile_seek (aubio_source_sndfile_t * s, uint_t pos) {  uint_t resampled_pos = (uint_t)ROUND(pos / s->ratio);  sf_count_t sf_ret;  if (s->handle == NULL) {    AUBIO_ERR("source_sndfile: failed seeking in %s (file not opened?)\n",        s->path);    return AUBIO_FAIL;  }  if ((sint_t)pos < 0) {    AUBIO_ERR("source_sndfile: could not seek %s at %d (seeking position"       " should be >= 0)\n", s->path, pos);    return AUBIO_FAIL;  }  sf_ret = sf_seek (s->handle, resampled_pos, SEEK_SET);  if (sf_ret == -1) {    AUBIO_ERR("source_sndfile: Failed seeking %s at %d: %s\n", s->path, pos, sf_strerror (NULL));    return AUBIO_FAIL;  }  if (sf_ret != resampled_pos) {    AUBIO_ERR("source_sndfile: Tried seeking %s at %d, but got %d: %s\n",        s->path, resampled_pos, (uint_t)sf_ret, sf_strerror (NULL));    return AUBIO_FAIL;  }  return AUBIO_OK;} uint_t aubio_source_sndfile_close (aubio_source_sndfile_t *s) {  if (!s->handle) {    return AUBIO_OK;  }  if(sf_close(s->handle)) {    AUBIO_ERR("source_sndfile: Error closing file %s: %s\n", s->path, sf_strerror (NULL));    return AUBIO_FAIL;  }  s->handle = NULL;  return AUBIO_OK;} void del_aubio_source_sndfile(aubio_source_sndfile_t * s){  AUBIO_ASSERT(s);  aubio_source_sndfile_close(s);#ifdef HAVE_SAMPLERATE  if (s->resamplers != NULL) {    uint_t i = 0, input_channels = s->input_channels;    for (i = 0; i < input_channels; i ++) {      if (s->resamplers[i] != NULL) {        del_aubio_resampler(s->resamplers[i]);      }    }    AUBIO_FREE(s->resamplers);  }  if (s->input_data) {    del_fvec(s->input_data);  }  if (s->input_mat) {    del_fmat(s->input_mat);  }#endif /* HAVE_SAMPLERATE */  if (s->path) AUBIO_FREE(s->path);  AUBIO_FREE(s->scratch_data);  AUBIO_FREE(s);} #endif /* HAVE_SNDFILE */