allegro_m.cpp
Go to the documentation of this file.00001
00002
00005 #ifdef WITH_ALLEGRO
00006
00007 #include "../stdafx.h"
00008 #include "../debug.h"
00009 #include "allegro_m.h"
00010 #include <allegro.h>
00011
00012 static FMusicDriver_Allegro iFMusicDriver_Allegro;
00013 static MIDI *_midi = NULL;
00014
00017 extern int _allegro_instance_count;
00018
00019 const char *MusicDriver_Allegro::Start(const char * const *param)
00020 {
00021 if (_allegro_instance_count == 0 && install_allegro(SYSTEM_AUTODETECT, &errno, NULL)) return NULL;
00022 _allegro_instance_count++;
00023
00024
00025 if (install_sound(DIGI_AUTODETECT, MIDI_AUTODETECT, NULL) != 0) return NULL;
00026
00027
00028 if (midi_card == MIDI_NONE) {
00029 DEBUG(driver, 0, "allegro: no midi card found");
00030 }
00031
00032 return NULL;
00033 }
00034
00035 void MusicDriver_Allegro::Stop()
00036 {
00037 if (_midi != NULL) destroy_midi(_midi);
00038 _midi = NULL;
00039
00040 if (--_allegro_instance_count == 0) allegro_exit();
00041 }
00042
00043 void MusicDriver_Allegro::PlaySong(const char *filename)
00044 {
00045 if (_midi != NULL) destroy_midi(_midi);
00046 _midi = load_midi(filename);
00047 play_midi(_midi, false);
00048 }
00049
00050 void MusicDriver_Allegro::StopSong()
00051 {
00052 stop_midi();
00053 }
00054
00055 bool MusicDriver_Allegro::IsSongPlaying()
00056 {
00057 return midi_pos >= 0;
00058 }
00059
00060 void MusicDriver_Allegro::SetVolume(byte vol)
00061 {
00062 set_volume(-1, vol);
00063 }
00064
00065 #endif