(svn r14632) -Add: support Allegro as midi backend.

src/music/allegro_m.h

@@ -0,0 +1,33 @@
+/* $Id$ */
+
+/** @file allegro_m.h Base support for playing music via allegro. */
+
+#ifndef MUSIC_ALLEGRO_H
+#define MUSIC_ALLEGRO_H
+
+#include "music_driver.hpp"
+
+class MusicDriver_Allegro: public MusicDriver {
+public:
+	/* virtual */ const char *Start(const char * const *param);
+
+	/* virtual */ void Stop();
+
+	/* virtual */ void PlaySong(const char *filename);
+
+	/* virtual */ void StopSong();
+
+	/* virtual */ bool IsSongPlaying();
+
+	/* virtual */ void SetVolume(byte vol);
+};
+
+class FMusicDriver_Allegro: public MusicDriverFactory<FMusicDriver_Allegro> {
+public:
+	static const int priority = 1;
+	/* virtual */ const char *GetName() { return "allegro"; }
+	/* virtual */ const char *GetDescription() { return "Allegro MIDI Driver"; }
+	/* virtual */ Driver *CreateInstance() { return new MusicDriver_Allegro(); }
+};
+
+#endif /* MUSIC_ALLEGRO_H */