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/* $Id$ */

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#ifndef __MORPHOS__

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#include "../stdafx.h"

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#include "../openttd.h"

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#include "../sound.h"

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#include "../string.h"

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#include "../variables.h"

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#include "../debug.h"

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#include "extmidi.h"

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#include <fcntl.h>

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#include <sys/types.h>

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#include <sys/wait.h>

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#include <unistd.h>

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#include <signal.h>

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#include <sys/stat.h>

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#include <errno.h>

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static struct {

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	char song[MAX_PATH];

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	pid_t pid;

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} _midi;

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static void DoPlay();

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static void DoStop();

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static const char* ExtMidiStart(const char* const * parm)

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{

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	_midi.song[0] = '\0';

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	_midi.pid = -1;

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	return NULL;

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}

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static void ExtMidiStop()

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{

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	_midi.song[0] = '\0';

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	DoStop();

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}

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static void ExtMidiPlaySong(const char* filename)

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{

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	ttd_strlcpy(_midi.song, filename, lengthof(_midi.song));

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	DoStop();

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}

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static void ExtMidiStopSong()

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{

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	_midi.song[0] = '\0';

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	DoStop();

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}

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static bool ExtMidiIsPlaying()

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{

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	if (_midi.pid != -1 && waitpid(_midi.pid, NULL, WNOHANG) == _midi.pid)

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		_midi.pid = -1;

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	if (_midi.pid == -1 && _midi.song[0] != '\0') DoPlay();

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	return _midi.pid != -1;

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}

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static void ExtMidiSetVolume(byte vol)

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{

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	DEBUG(driver, 1, "extmidi: set volume not implemented");

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}

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static void DoPlay()

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{

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	_midi.pid = fork();

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	switch (_midi.pid) {

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		case 0: {

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			int d;

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			close(0);

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			d = open("/dev/null", O_RDONLY);

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			if (d != -1 && dup2(d, 1) != -1 && dup2(d, 2) != -1) {

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				#if defined(MIDI_ARG)

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					execlp(msf.extmidi, "extmidi", MIDI_ARG, _midi.song, (char*)0);

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				#else

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					execlp(msf.extmidi, "extmidi", _midi.song, (char*)0);

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				#endif

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			}

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			_exit(1);

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		}

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		case -1:

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			DEBUG(driver, 0, "extmidi: couldn't fork: %s", strerror(errno));

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			/* FALLTHROUGH */

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		default:

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			_midi.song[0] = '\0';

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			break;

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	}

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}

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static void DoStop()

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{

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	if (_midi.pid != -1) kill(_midi.pid, SIGTERM);

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}

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const HalMusicDriver _extmidi_music_driver = {

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	ExtMidiStart,

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	ExtMidiStop,

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	ExtMidiPlaySong,

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	ExtMidiStopSong,

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	ExtMidiIsPlaying,

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	ExtMidiSetVolume,

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};

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#endif /* __MORPHOS__ */