Files @ r4681:f719e26018b5
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Location: cpp/openttd-patchpack/source/music/extmidi.c

bjarni
(svn r6586) -Feature: [depot window] added a vehicle list window with all vehicles having a certain depot in their orders
It got one known issue though. The top bar got a plural issue so expect to see stuff like "1 trains" until we figure out why it behaves this way
Added the button to the depot windows. Made the autoreplace button bigger while I was moving some widgets anyway
Made road vehicle depot windows start with one more row to make room for the buttons
/* $Id$ */

#ifndef __MORPHOS__
#include "../stdafx.h"
#include "../openttd.h"
#include "../sound.h"
#include "../string.h"
#include "../variables.h"
#include "../debug.h"
#include "extmidi.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];
	pid_t 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)
{
	DEBUG(driver, 1) ("extmidi: set volume not implemented");
}

static void DoPlay(void)
{
	_midi.pid = fork();
	switch (_midi.pid) {
		case 0: {
			int d;

			close(0);
			d = open("/dev/null", O_RDONLY);
			if (d != -1 && dup2(d, 1) != -1 && dup2(d, 2) != -1) {
				#if defined(MIDI_ARG)
					execlp(msf.extmidi, "extmidi", MIDI_ARG, _midi.song, (char*)0);
				#else
					execlp(msf.extmidi, "extmidi", _midi.song, (char*)0);
				#endif
			}
			_exit(1);
		}

		case -1:
			DEBUG(driver, 0) ("extmidi: couldn't fork: %s", 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__ */