cpp/openttd-patchpack/source Files · src/music/extmidi.cpp

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Location: cpp/openttd-patchpack/source/src/music/extmidi.cpp

r7882:cdf03a4ac84a 1.8 KiB text/x-c Show Annotation Show as Raw Download as Raw

rubidium

(svn r11433) -Fix: starting OpenTTD with DOS files made it look weird out of the box.
-Change: make extra sprites (the ones not in the TTD GRFs) replaceable using Action 5.
-Feature: make replacing contiguous subsets of sprites in for some types possible in Action 5.
Note to GRF authors: when you replaced OpenTTD sprites that are not from the TTD GRF files using Action A, your GRF will not have the intended result anymore as the sprite numbers have changed. You should replace the Action A with an Action 5 from now on.

/* $Id$ */

#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 FMusicDriver_ExtMidi iFMusicDriver_ExtMidi;

const char* MusicDriver_ExtMidi::Start(const char* const * parm)
{
	this->song[0] = '\0';
	this->pid = -1;
	return NULL;
}

void MusicDriver_ExtMidi::Stop()
{
	this->song[0] = '\0';
	this->DoStop();
}

void MusicDriver_ExtMidi::PlaySong(const char* filename)
{
	ttd_strlcpy(this->song, filename, lengthof(this->song));
	this->DoStop();
}

void MusicDriver_ExtMidi::StopSong()
{
	this->song[0] = '\0';
	this->DoStop();
}

bool MusicDriver_ExtMidi::IsSongPlaying()
{
	if (this->pid != -1 && waitpid(this->pid, NULL, WNOHANG) == this->pid)
		this->pid = -1;
	if (this->pid == -1 && this->song[0] != '\0') this->DoPlay();
	return this->pid != -1;
}

void MusicDriver_ExtMidi::SetVolume(byte vol)
{
	DEBUG(driver, 1, "extmidi: set volume not implemented");
}

void MusicDriver_ExtMidi::DoPlay()
{
	this->pid = fork();
	switch (this->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, this->song, (char*)0);
				#else
					execlp(msf.extmidi, "extmidi", this->song, (char*)0);
				#endif
			}
			_exit(1);
		}

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

		default:
			this->song[0] = '\0';
			break;
	}
}

void MusicDriver_ExtMidi::DoStop()
{
	if (this->pid != -1) kill(this->pid, SIGTERM);
}

#endif /* __MORPHOS__ */