mirror of https://github.com/OpenTTD/OpenTTD.git
104 lines
2.0 KiB
C++
104 lines
2.0 KiB
C++
/* $Id$ */
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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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#ifndef EXTERNAL_PLAYER
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#define EXTERNAL_PLAYER "timidity"
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#endif
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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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const char *command = GetDriverParam(parm, "cmd");
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if (StrEmpty(command)) command = EXTERNAL_PLAYER;
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this->command = strdup(command);
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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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free(command);
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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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strecpy(this->song, filename, lastof(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(this->command, "extmidi", MIDI_ARG, this->song, (char*)0);
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#else
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execlp(this->command, "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__ */
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