mirror of https://github.com/OpenTTD/OpenTTD.git
66 lines
1.3 KiB
C++
66 lines
1.3 KiB
C++
/* $Id$ */
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/** @file allegro_m.cpp Playing music via allegro. */
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#ifdef WITH_ALLEGRO
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#include "../stdafx.h"
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#include "../debug.h"
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#include "allegro_m.h"
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#include <allegro.h>
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static FMusicDriver_Allegro iFMusicDriver_Allegro;
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static MIDI *_midi = NULL;
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/** There are multiple modules that might be using Allegro and
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* Allegro can only be initiated once. */
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extern int _allegro_instance_count;
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const char *MusicDriver_Allegro::Start(const char * const *param)
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{
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if (_allegro_instance_count == 0 && install_allegro(SYSTEM_AUTODETECT, &errno, NULL)) return NULL;
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_allegro_instance_count++;
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/* Initialise the sound */
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if (install_sound(DIGI_AUTODETECT, MIDI_AUTODETECT, NULL) != 0) return NULL;
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/* Okay, there's no soundcard */
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if (midi_card == MIDI_NONE) {
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DEBUG(driver, 0, "allegro: no midi card found");
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}
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return NULL;
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}
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void MusicDriver_Allegro::Stop()
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{
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if (_midi != NULL) destroy_midi(_midi);
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_midi = NULL;
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if (--_allegro_instance_count == 0) allegro_exit();
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}
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void MusicDriver_Allegro::PlaySong(const char *filename)
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{
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if (_midi != NULL) destroy_midi(_midi);
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_midi = load_midi(filename);
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play_midi(_midi, false);
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}
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void MusicDriver_Allegro::StopSong()
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{
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stop_midi();
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}
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bool MusicDriver_Allegro::IsSongPlaying()
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{
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return midi_pos >= 0;
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}
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void MusicDriver_Allegro::SetVolume(byte vol)
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{
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set_volume(-1, vol);
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}
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#endif /* WITH_ALLEGRO */
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