/* $Id$ */ /* * This file is part of OpenTTD. * OpenTTD 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, version 2. * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>. */ /** @file allegro_m.cpp Playing music via allegro. */ #ifdef WITH_ALLEGRO #include "../stdafx.h" #include "../debug.h" #include "allegro_m.h" #include <allegro.h> static FMusicDriver_Allegro iFMusicDriver_Allegro; static MIDI *_midi = NULL; /** There are multiple modules that might be using Allegro and * Allegro can only be initiated once. */ extern int _allegro_instance_count; const char *MusicDriver_Allegro::Start(const char * const *param) { if (_allegro_instance_count == 0 && install_allegro(SYSTEM_AUTODETECT, &errno, NULL)) return "Failed to set up Allegro"; _allegro_instance_count++; /* Initialise the sound */ if (install_sound(DIGI_AUTODETECT, MIDI_AUTODETECT, NULL) != 0) return "Failed to set up Allegro sound"; /* Okay, there's no soundcard */ if (midi_card == MIDI_NONE) { DEBUG(driver, 0, "allegro: no midi card found"); return "No sound card found"; } return NULL; } void MusicDriver_Allegro::Stop() { if (_midi != NULL) destroy_midi(_midi); _midi = NULL; if (--_allegro_instance_count == 0) allegro_exit(); } void MusicDriver_Allegro::PlaySong(const char *filename) { if (_midi != NULL) destroy_midi(_midi); _midi = load_midi(filename); play_midi(_midi, false); } void MusicDriver_Allegro::StopSong() { stop_midi(); } bool MusicDriver_Allegro::IsSongPlaying() { return midi_pos >= 0; } void MusicDriver_Allegro::SetVolume(byte vol) { set_volume(-1, vol); } #endif /* WITH_ALLEGRO */