ref: 92e40288b03d02dd8e8f1485cf1f8e962e0f2dff
dir: /ext/midi/midi_track.c/
/* * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public License * as published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the Free * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA * 02111-1307, USA */ /* this file originally taken from FluidSynth - A Software Synthesizer * Copyright (C) 2003 Peter Hanappe and others. */ #include "aubio_priv.h" #include "midi.h" #include "midi_event.h" #include "midi_track.h" #include "midi_player.h" /** new_aubio_track */ aubio_track_t* new_aubio_track(int num) { aubio_track_t* track; track = AUBIO_NEW(aubio_track_t); if (track == NULL) { return NULL; } track->name = NULL; track->num = num; track->first = NULL; track->cur = NULL; track->last = NULL; track->ticks = 0; return track; } /** del_aubio_track */ int del_aubio_track(aubio_track_t* track) { if (track->name != NULL) { AUBIO_FREE(track->name); } if (track->first != NULL) { del_aubio_midi_event(track->first); } AUBIO_FREE(track); return AUBIO_OK; } /** aubio_track_set_name */ int aubio_track_set_name(aubio_track_t* track, char* name) { int len; if (track->name != NULL) { AUBIO_FREE(track->name); } if (name == NULL) { track->name = NULL; return AUBIO_OK; } len = AUBIO_STRLEN(name); track->name = AUBIO_MALLOC(len + 1); if (track->name == NULL) { AUBIO_ERR( "Out of memory"); return AUBIO_FAIL; } AUBIO_STRCPY(track->name, name); return AUBIO_OK; } /** aubio_track_get_name */ char* aubio_track_get_name(aubio_track_t* track) { return track->name; } /** aubio_track_get_duration */ int aubio_track_get_duration(aubio_track_t* track) { int time = 0; aubio_midi_event_t* evt = track->first; while (evt != NULL) { time += evt->dtime; evt = evt->next; } return time; } /** aubio_track_count_events */ int aubio_track_count_events(aubio_track_t* track, int* on, int* off) { aubio_midi_event_t* evt = track->first; while (evt != NULL) { if (evt->type == NOTE_ON) { (*on)++; } else if (evt->type == NOTE_OFF) { (*off)++; } evt = evt->next; } return AUBIO_OK; } /* * aubio_track_add_event */ int aubio_track_add_event(aubio_track_t* track, aubio_midi_event_t* evt) { evt->next = NULL; if (track->first == NULL) { track->first = evt; track->cur = evt; track->last = evt; } else { track->last->next = evt; track->last = evt; } return AUBIO_OK; } /* * aubio_track_first_event */ aubio_midi_event_t* aubio_track_first_event(aubio_track_t* track) { track->cur = track->first; return track->cur; } /* * aubio_track_next_event */ aubio_midi_event_t* aubio_track_next_event(aubio_track_t* track) { if (track->cur != NULL) { track->cur = track->cur->next; } return track->cur; } /* * aubio_track_reset */ int aubio_track_reset(aubio_track_t* track) { track->ticks = 0; track->cur = track->first; return AUBIO_OK; }