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-rw-r--r--music/extmidi.c112
1 files changed, 112 insertions, 0 deletions
diff --git a/music/extmidi.c b/music/extmidi.c
new file mode 100644
index 000000000..031f7a383
--- /dev/null
+++ b/music/extmidi.c
@@ -0,0 +1,112 @@
+#ifndef __BEOS__
+#ifndef __MORPHOS__
+#include "stdafx.h"
+
+#include "openttd.h"
+#include "music/extmidi.h"
+#include "sound.h"
+#include "string.h"
+#include "variables.h"
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <signal.h>
+#include <sys/stat.h>
+#include <errno.h>
+
+static struct {
+ char song[MAX_PATH];
+ int pid;
+} _midi;
+
+static void DoPlay(void);
+static void DoStop(void);
+
+static const char* ExtMidiStart(const char* const * parm)
+{
+ _midi.song[0] = '\0';
+ _midi.pid = -1;
+ return NULL;
+}
+
+static void ExtMidiStop(void)
+{
+ _midi.song[0] = '\0';
+ DoStop();
+}
+
+static void ExtMidiPlaySong(const char* filename)
+{
+ ttd_strlcpy(_midi.song, filename, lengthof(_midi.song));
+ DoStop();
+}
+
+static void ExtMidiStopSong(void)
+{
+ _midi.song[0] = '\0';
+ DoStop();
+}
+
+static bool ExtMidiIsPlaying(void)
+{
+ if (_midi.pid != -1 && waitpid(_midi.pid, NULL, WNOHANG) == _midi.pid)
+ _midi.pid = -1;
+ if (_midi.pid == -1 && _midi.song[0] != '\0') DoPlay();
+ return _midi.pid != -1;
+}
+
+static void ExtMidiSetVolume(byte vol)
+{
+ fprintf(stderr, "extmidi: set volume not implemented\n");
+}
+
+static void DoPlay(void)
+{
+ _midi.pid = fork();
+ switch (_midi.pid) {
+ case 0: {
+ int d;
+
+ close(0);
+ close(1);
+ close(2);
+ d = open("/dev/null", O_RDONLY);
+ if (d != -1) {
+ if (dup2(d, 1) != -1 && dup2(d, 2) != -1) {
+ #if defined(MIDI_ARG)
+ execlp(msf.extmidi, "extmidi", MIDI_ARG, _midi.song, NULL);
+ #else
+ execlp(msf.extmidi, "extmidi", _midi.song, NULL);
+ #endif
+ }
+ }
+ exit(1);
+ }
+
+ case -1:
+ fprintf(stderr, "extmidi: couldn't fork: %s\n", strerror(errno));
+ /* FALLTHROUGH */
+
+ default:
+ _midi.song[0] = '\0';
+ break;
+ }
+}
+
+static void DoStop(void)
+{
+ if (_midi.pid != -1) kill(_midi.pid, SIGTERM);
+}
+
+const HalMusicDriver _extmidi_music_driver = {
+ ExtMidiStart,
+ ExtMidiStop,
+ ExtMidiPlaySong,
+ ExtMidiStopSong,
+ ExtMidiIsPlaying,
+ ExtMidiSetVolume,
+};
+
+#endif /* __MORPHOS__ */
+#endif /* __BEOS__ */