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/* $Id$ */

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/** @file extmidi.cpp Playing music via an external player. */

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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_func.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 FMusicDriver_ExtMidi iFMusicDriver_ExtMidi;

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const char* MusicDriver_ExtMidi::Start(const char* const * parm)

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{

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	this->song[0] = '\0';

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	this->pid = -1;

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	return NULL;

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}

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void MusicDriver_ExtMidi::Stop()

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{

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	this->song[0] = '\0';

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	this->DoStop();

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}

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void MusicDriver_ExtMidi::PlaySong(const char* filename)

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{

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	ttd_strlcpy(this->song, filename, lengthof(this->song));

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	this->DoStop();

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}

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void MusicDriver_ExtMidi::StopSong()

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{

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	this->song[0] = '\0';

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	this->DoStop();

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}

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bool MusicDriver_ExtMidi::IsSongPlaying()

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{

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	if (this->pid != -1 && waitpid(this->pid, NULL, WNOHANG) == this->pid)

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		this->pid = -1;

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

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	return this->pid != -1;

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}

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void MusicDriver_ExtMidi::SetVolume(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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void MusicDriver_ExtMidi::DoPlay()

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{

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	this->pid = fork();

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	switch (this->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, this->song, (char*)0);

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				#else

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					execlp(msf.extmidi, "extmidi", this->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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			this->song[0] = '\0';

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			break;

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	}

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}

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void MusicDriver_ExtMidi::DoStop()

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{

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	if (this->pid != -1) kill(this->pid, SIGTERM);

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}

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#endif /* __MORPHOS__ */