Files @ r763:35db88c93a4f
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Location: cpp/openttd-patchpack/source/extmidi.c

darkvater
(svn r1225) -Feature: SHIFT+DEL now deletes all non-vital windows (only status bar and main bar remain)
-Fix: For everyone who tried to crash the game by opening a huge amount of windows and stickying all of them; bad luck. It's fixed now (thanks Tron for the helpful criticism). First all normal windows are a candidate for replacement, then if none are found, sticky windows. Then..well that should not happen :)
#ifndef __BEOS__
#ifndef __MORPHOS__
#include "stdafx.h"

#include "ttd.h"
#include "hal.h"
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <signal.h>
#include <sys/stat.h>
#include <errno.h>

#ifndef EXTERNAL_PLAYER
#define EXTERNAL_PLAYER "timidity"
#endif

static pid_t _pid;

static void extmidi_kill(void)
{
	if (_pid > 0) {
		kill(_pid, SIGKILL);
		while (waitpid(_pid, NULL, WNOHANG) != _pid);
	}
	_pid = 0;
}

static char *extmidi_start(char **parm)
{
	_pid = 0;
	return NULL;
}

static void extmidi_stop(void)
{
	extmidi_kill();
}

static void extmidi_play_song(const char *filename)
{
	extmidi_kill();

	_pid = fork();
	if (_pid < 0) {
		fprintf(stderr, "extmidi: couldn't fork: %s\n", strerror(errno));
		_pid = 0;
		return;
	}

	if (_pid == 0) {
		#if defined(MIDI_ARG)
			execlp(EXTERNAL_PLAYER, "extmidi", MIDI_ARG, filename, NULL);
		#else
			execlp(EXTERNAL_PLAYER, "extmidi", filename, NULL);
		#endif
		fprintf(stderr, "extmidi: couldn't execl: %s\n", strerror(errno));
		exit(0);
	}

	usleep(500);

	if (_pid == waitpid(_pid, NULL, WNOHANG)) {
		fprintf(stderr, "extmidi: play song failed\n");
		_pid = 0;

		usleep(5000);
	}
}

static void extmidi_stop_song(void)
{
	extmidi_kill();
}

static bool extmidi_is_playing(void)
{
	if (_pid == 0)
		return 0;

	if (waitpid(_pid, NULL, WNOHANG) == _pid) {
		_pid = 0;
		return 0;
	}

	return 1;
}

static void extmidi_set_volume(byte vol)
{
	fprintf(stderr, "extmidi: set volume not implemented\n");
}

const HalMusicDriver _extmidi_music_driver = {
	extmidi_start,
	extmidi_stop,
	extmidi_play_song,
	extmidi_stop_song,
	extmidi_is_playing,
	extmidi_set_volume,
};

#endif /* __MORPHOS__ */
#endif /* __BEOS__ */