Esempio n. 1
0
static int
cmd_events(char *notused)
{
	smf_event_t *event;

	if (selected_track == NULL) {
		g_critical("No track selected - please use 'track <number>' command first.");
		return (-1);
	}

	if (selected_track->number_of_events == 0) {
		g_message("Selected track is empty.");
		return (0);
	}

	g_message("List of events in track %d follows:", selected_track->track_number);

	smf_rewind(smf);

	while ((event = smf_track_get_next_event(selected_track)) != NULL)
		show_event(event);

	smf_rewind(smf);

	return (0);
}
Esempio n. 2
0
File: smf.c Progetto: Darko8/libsmf
/**
  * Seeks the SMF to the given event.  After calling this routine, smf_get_next_event
  * will return the event that was the second argument of this call.
  */
int
smf_seek_to_event(smf_t *smf, const smf_event_t *target)
{
	smf_event_t *event;

	smf_rewind(smf);

#if 0
	g_debug("Seeking to event %d, track %d.", target->event_number, target->track->track_number);
#endif

	for (;;) {
		event = smf_peek_next_event(smf);

		/* There can't be NULL here, unless "target" is not in this smf. */
		assert(event);

		if (event != target)
			smf_skip_next_event(smf);
		else
			break;
	}	

	smf->last_seek_position = event->time_seconds;

	return (0);
}
Esempio n. 3
0
File: smf.c Progetto: Darko8/libsmf
/**
  * Seeks the SMF to the given position.  For example, after seeking to 10 pulses,
  * smf_get_next_event will return first event that happens after the first ten pulses.
  * \return 0 if everything went ok, nonzero otherwise.
  */
int
smf_seek_to_pulses(smf_t *smf, int pulses)
{
	smf_event_t *event;

	assert(pulses >= 0);

	smf_rewind(smf);

#if 0
	g_debug("Seeking to %d pulses.", pulses);
#endif

	for (;;) {
		event = smf_peek_next_event(smf);

		if (event == NULL) {
			g_critical("Trying to seek past the end of song.");
			return (-1);
		}

		if (event->time_pulses < pulses)
			smf_skip_next_event(smf);
		else
			break;
	}

	smf->last_seek_position = event->time_seconds;

	return (0);
}
Esempio n. 4
0
File: midi.c Progetto: denemo/denemo
void
start_playing (gchar * callback)
{
  smf_t *smf = Denemo.project->movement->smf;
  if (callback && *callback)
    callback_script = g_string_new (callback);
  if (Denemo.project->movement->recorded_midi_track)
    safely_add_track (Denemo.project->movement->smf, Denemo.project->movement->recorded_midi_track);

  fix_start_end_ordering ();
  smf_rewind (smf);
  gdouble start = (Denemo.project->movement->start_time/get_playback_speed()) - SHAVING;
  if(smf_seek_to_seconds (smf, (start>0.0)?start:0.0))
    g_warning("smf_seek_to_seconds %f failed", start);

  initialize_until_time ();

  initialize_playhead ();

  playing = TRUE;
  last_draw_time = -1.0;//needed to trigger drawing first note
}
Esempio n. 5
0
/**
 * Loads SMF file.
 *
 * \param file Open file.
 * \return SMF or NULL, if loading failed.
 */
smf_t *
smf_load(FILE *file)
{
	size_t file_buffer_length;
	void *file_buffer;
	smf_t *smf;

	if (load_file_into_buffer(&file_buffer, &file_buffer_length, file))
		return (NULL);

	smf = smf_load_from_memory(file_buffer, file_buffer_length);

	memset(file_buffer, 0, file_buffer_length);
	free(file_buffer);

	if (smf == NULL)
		return (NULL);

	smf_rewind(smf);

	return (smf);
}
Esempio n. 6
0
File: smf.c Progetto: Darko8/libsmf
/**
  * Seeks the SMF to the given position.  For example, after seeking to 1.0 seconds,
  * smf_get_next_event will return first event that happens after the first second of song.
  * \return 0 if everything went ok, nonzero otherwise.
  */
int
smf_seek_to_seconds(smf_t *smf, double seconds)
{
	smf_event_t *event;

	assert(seconds >= 0.0);

	if (seconds == smf->last_seek_position) {
#if 0
		g_debug("Avoiding seek to %f seconds.", seconds);
#endif
		return (0);
	}

	smf_rewind(smf);

#if 0
	g_debug("Seeking to %f seconds.", seconds);
#endif

	for (;;) {
		event = smf_peek_next_event(smf);

		if (event == NULL) {
			g_critical("Trying to seek past the end of song.");
			return (-1);
		}

		if (event->time_seconds < seconds)
			smf_skip_next_event(smf);
		else
			break;
	}

	smf->last_seek_position = seconds;

	return (0);
}
Esempio n. 7
0
gboolean
writer_timeout (gpointer file_name_gpointer)
{
   int i;
   char * file_name = (char *) file_name_gpointer;

   /*
    * XXX: It should be done like this:
    * http://wwwtcs.inf.tu-dresden.de/~tews/Gtk/x2992.html
    */

   if (ctrl_c_pressed == 0)
      return TRUE;

   jack_deactivate(jack_client);
   smf_rewind(smf);                 /* Get rid of empty tracks. */
   for (i = 0; i < 16; ++i)
   {
      if (tracks[i]->number_of_events == 0)
      {
         smf_remove_track(tracks[i]);
         smf_track_delete(tracks[i]);
      }
   }
   if (smf->number_of_tracks == 0)
   {
      g_message("No events recorded, not saving anything.");
      exit(0);
   }
   if (smf_save(smf, file_name))
   {
      g_critical("Could not save file '%s', sorry.", file_name);
      exit(-1);
   }
   g_message("File '%s' saved successfully.", file_name);
   exit(0);
}