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static FMusicDriver_ExtMidi iFMusicDriver_ExtMidi;

    21

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

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

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	this->pid = -1;

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void MusicDriver_ExtMidi::Stop()

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

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	this->DoStop();

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void MusicDriver_ExtMidi::PlaySong(const char* filename)

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

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	this->DoStop();

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void MusicDriver_ExtMidi::StopSong()

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

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	this->DoStop();

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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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}

    53

    54

void MusicDriver_ExtMidi::SetVolume(byte vol)

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void MusicDriver_ExtMidi::DoPlay()

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	this->pid = fork();

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	switch (this->pid) {

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					execlp(msf.extmidi, "extmidi", MIDI_ARG, this->song, (char*)0);

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					execlp(msf.extmidi, "extmidi", this->song, (char*)0);

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

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void MusicDriver_ExtMidi::DoStop()

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