Sigrid Solveig Haflínudóttirexamples: add a dumb /dev/audio supportd2af4083 years agoHistory
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/*  Copyright (C) 2003-2013 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/>. */ /**   This file includes some tools common to all examples. Code specific to the  algorithm performed by each program should go in the source file of that  program instead. */ #include "utils.h"#include <unistd.h>#ifdef HAVE_JACK#include "jackio.h"#endif /* HAVE_JACK */#ifdef HAVE_DEVAUDIO#include "devaudioio.h"#endif /* HAVE_DEVAUDIO */ int verbose = 0;int quiet = 0;int usejack = 0;int usedevaudio = 0;// input / outputchar_t *sink_uri = NULL;char_t *source_uri = NULL;// general stuffuint_t samplerate = 0;uint_t buffer_size = 512;uint_t hop_size = 256;// onset stuffchar_t * onset_method = "default";smpl_t onset_threshold = 0.0; // will be set if != 0.smpl_t onset_minioi = 0.0; // will be set if != 0.// pitch stuffchar_t * pitch_unit = "default";char_t * pitch_method = "default";smpl_t pitch_tolerance = 0.0; // will be set if != 0.// time stuffuint_t time_format = 0; // for "seconds", 1 for "ms", 2 for "samples"// tempo stuffchar_t * tempo_method = "default";// more general stuffsmpl_t silence_threshold = -90.;smpl_t release_drop = 10.;uint_t mix_input = 0; uint_t force_overwrite = 0; //// internal memory stuffaubio_source_t *this_source = NULL;aubio_sink_t *this_sink = NULL;fvec_t *input_buffer;fvec_t *output_buffer; smpl_t miditap_note = 69.;smpl_t miditap_velo = 65.; /* settings */int blocks = 0; extern void usage (FILE * stream, int exit_code);extern int parse_args (int argc, char **argv); #if HAVE_JACK#define MAX_MIDI_EVENTS 128#define MAX_MIDI_EVENT_SIZE 3aubio_jack_t *jack_setup;jack_midi_event_t ev;jack_midi_data_t midi_data[MAX_MIDI_EVENTS * MAX_MIDI_EVENT_SIZE];size_t midi_event_count = 0;#endif /* HAVE_JACK */ void examples_common_init (int argc, char **argv);void examples_common_del (void);void examples_common_process (aubio_process_func_t process_func,    aubio_print_func_t print); void examples_common_init (int argc, char **argv){   /* parse command line arguments */  parse_args (argc, argv);   if (!usejack && !usedevaudio) {    debug ("Opening files ...\n");    this_source = new_aubio_source ((char_t*)source_uri, samplerate, hop_size);    if (this_source == NULL) {      errmsg ("Error: could not open input file %s\n", source_uri);      exit (1);    }    if (samplerate == 0) {      samplerate = aubio_source_get_samplerate(this_source);    }    if (sink_uri != NULL) {      uint_t sink_exists = (access(sink_uri, F_OK) == 0 );      if (!force_overwrite && sink_exists) {        errmsg ("Error: output file %s already exists, use -f to overwrite.\n",            sink_uri);        exit (1);      }      this_sink = new_aubio_sink ((char_t*)sink_uri, samplerate);      if (this_sink == NULL) {        errmsg ("Error: could not create output file %s\n", sink_uri);        exit (1);      }    }#ifdef HAVE_JACK  } else {    debug ("Jack init ...\n");    jack_setup = new_aubio_jack (hop_size, 1, 1, 0, 1);    samplerate = aubio_jack_get_samplerate (jack_setup);    source_uri = "jack";#endif /* HAVE_JACK */#ifdef HAVE_DEVAUDIO  } else {    debug ("devaudio init ...\n");    new_aubio_devaudio (hop_size);    samplerate = aubio_devaudio_get_samplerate ();    source_uri = "devaudio";#endif /* HAVE_DEVAUDIO */  }  input_buffer = new_fvec (hop_size);  output_buffer = new_fvec (hop_size); } void examples_common_del (void){  del_fvec (input_buffer);  del_fvec (output_buffer);  aubio_cleanup ();  fflush(stderr);  fflush(stdout);} void examples_common_process (aubio_process_func_t process_func,    aubio_print_func_t print){   uint_t read = 0;  if (usejack || usedevaudio) { #ifdef HAVE_JACK    ev.size = MAX_MIDI_EVENT_SIZE;    ev.time = 0; // send it now    debug ("Jack activation ...\n");    aubio_jack_activate (jack_setup, process_func);    debug ("Processing (Ctrl+C to quit) ...\n");    pause ();    aubio_jack_close (jack_setup);#elif HAVE_DEVAUDIO    debug ("devaudio activation ...\n");    debug ("Processing (Del to quit) ...\n");    aubio_devaudio_activate (process_func, print);#else /* HAVE_JACK */    usage (stderr, 1);    outmsg ("Compiled without jack output, exiting.\n");#endif /* HAVE_JACK */   } else {     uint_t total_read = 0;    blocks = 0;     do {      aubio_source_do (this_source, input_buffer, &read);      process_func (input_buffer, output_buffer);      // print to console if verbose or no output given      if ((verbose || sink_uri == NULL) && !quiet) {        print();      }      if (this_sink) {        aubio_sink_do (this_sink, output_buffer, hop_size);      }      blocks++;      total_read += read;    } while (read == hop_size);     verbmsg ("read %.2fs (%d samples in %d blocks of %d) from %s at %dHz\n",        total_read * 1. / samplerate,        total_read, blocks, hop_size, source_uri, samplerate);     del_aubio_source (this_source);    if (this_sink)      del_aubio_sink   (this_sink);   }} voidsend_noteon (smpl_t pitch, smpl_t velo){#ifdef HAVE_JACK  if (usejack) {    ev.buffer = midi_data + midi_event_count++ * MAX_MIDI_EVENT_SIZE;    if (midi_event_count >= MAX_MIDI_EVENTS) {      midi_event_count = 0;    }    ev.buffer[2] = velo;    ev.buffer[1] = pitch;    if (velo == 0) {      ev.buffer[0] = 0x80;      /* note off */    } else {      ev.buffer[0] = 0x90;      /* note on */    }    aubio_jack_midi_event_write (jack_setup, (jack_midi_event_t *) & ev);  } else#endif  if (velo == 0) {    print_time (blocks * hop_size);    outmsg ("\n");  } else {    outmsg ("%f\t", pitch);    print_time (blocks * hop_size);    outmsg ("\t");  }} void print_time (uint_t time_in_samples) {  /* output times in selected format */  if (time_format == 2) {    outmsg ("%d", time_in_samples);  } else if (time_format == 1) {    outmsg ("%f", 1000. * time_in_samples / (float) samplerate);  } else {    outmsg ("%f", time_in_samples / (float) samplerate);  }}

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