diff options
Diffstat (limited to 'music/extmidi.c')
-rw-r--r-- | music/extmidi.c | 112 |
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__ */ |