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authorrubidium <rubidium@openttd.org>2008-11-25 23:21:58 +0000
committerrubidium <rubidium@openttd.org>2008-11-25 23:21:58 +0000
commitba2345808b84a22fe444849b47ce648c3c32bce0 (patch)
treef34a31a52f51017351a1e60fbcc336f87ded98c1 /src/music
parent5ebb48fa8633dc90e7fd6343f117d513f682dc1e (diff)
downloadopenttd-ba2345808b84a22fe444849b47ce648c3c32bce0.tar.xz
(svn r14632) -Add: support Allegro as midi backend.
Diffstat (limited to 'src/music')
-rw-r--r--src/music/allegro_m.cpp65
-rw-r--r--src/music/allegro_m.h33
2 files changed, 98 insertions, 0 deletions
diff --git a/src/music/allegro_m.cpp b/src/music/allegro_m.cpp
new file mode 100644
index 000000000..9400e7f49
--- /dev/null
+++ b/src/music/allegro_m.cpp
@@ -0,0 +1,65 @@
+/* $Id$ */
+
+/** @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 NULL;
+ _allegro_instance_count++;
+
+ /* Initialise the sound */
+ if (install_sound(DIGI_AUTODETECT, MIDI_AUTODETECT, NULL) != 0) return NULL;
+
+ /* Okay, there's no soundcard */
+ if (midi_card == MIDI_NONE) {
+ DEBUG(driver, 0, "allegro: no midi 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 */
diff --git a/src/music/allegro_m.h b/src/music/allegro_m.h
new file mode 100644
index 000000000..1bc62d65c
--- /dev/null
+++ b/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 */