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Location: cpp/openttd-patchpack/source/src/music/extmidi.cpp
r19293:3f2cb83a321f
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(svn r24196) -Update from WebTranslator v3.0:
afrikaans - 33 changes by telanus
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czech - 4 changes by Paragulis
dutch - 8 changes by habell
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polish - 4 changes by wojteks86
russian - 6 changes by KorneySan
afrikaans - 33 changes by telanus
belarusian - 6 changes by KorneySan, Wowanxm
croatian - 4 changes by VoyagerOne
czech - 4 changes by Paragulis
dutch - 8 changes by habell
english_AU - 19 changes by tomas4g
english_US - 4 changes by Rubidium
finnish - 4 changes by jpx_
french - 4 changes by OliTTD
german - 4 changes by NG
italian - 4 changes by lorenzodv
lithuanian - 22 changes by Stabilitronas
polish - 4 changes by wojteks86
russian - 6 changes by KorneySan
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | /* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file extmidi.cpp Playing music via an external player. */
#ifndef __MORPHOS__
#include "../stdafx.h"
#include "../debug.h"
#include "../string_func.h"
#include "../sound/sound_driver.hpp"
#include "../video/video_driver.hpp"
#include "../gfx_func.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>
#ifndef EXTERNAL_PLAYER
/** The default external midi player. */
#define EXTERNAL_PLAYER "timidity"
#endif
/** Factory for the midi player that uses external players. */
static FMusicDriver_ExtMidi iFMusicDriver_ExtMidi;
const char *MusicDriver_ExtMidi::Start(const char * const * parm)
{
if (strcmp(_video_driver->GetName(), "allegro") == 0 ||
strcmp(_sound_driver->GetName(), "allegro") == 0) {
return "the extmidi driver does not work when Allegro is loaded.";
}
const char *command = GetDriverParam(parm, "cmd");
if (StrEmpty(command)) command = EXTERNAL_PLAYER;
this->command = strdup(command);
this->song[0] = '\0';
this->pid = -1;
return NULL;
}
void MusicDriver_ExtMidi::Stop()
{
free(command);
this->song[0] = '\0';
this->DoStop();
}
void MusicDriver_ExtMidi::PlaySong(const char *filename)
{
strecpy(this->song, filename, lastof(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: {
close(0);
int d = open("/dev/null", O_RDONLY);
if (d != -1 && dup2(d, 1) != -1 && dup2(d, 2) != -1) {
#if defined(MIDI_ARG)
execlp(this->command, "extmidi", MIDI_ARG, this->song, (char*)0);
#else
execlp(this->command, "extmidi", this->song, (char*)0);
#endif
}
_exit(1);
}
case -1:
DEBUG(driver, 0, "extmidi: couldn't fork: %s", strerror(errno));
/* FALL THROUGH */
default:
this->song[0] = '\0';
break;
}
}
void MusicDriver_ExtMidi::DoStop()
{
if (this->pid <= 0) return;
/* First try to gracefully stop for about five seconds;
* 5 seconds = 5000 milliseconds, 10 ms per cycle => 500 cycles. */
for (int i = 0; i < 500; i++) {
kill(this->pid, SIGTERM);
if (waitpid(this->pid, NULL, WNOHANG) == this->pid) {
/* It has shut down, so we are done */
this->pid = -1;
return;
}
/* Wait 10 milliseconds. */
CSleep(10);
}
DEBUG(driver, 0, "extmidi: gracefully stopping failed, trying the hard way");
/* Gracefully stopping failed. Do it the hard way
* and wait till the process finally died. */
kill(this->pid, SIGKILL);
waitpid(this->pid, NULL, 0);
this->pid = -1;
}
#endif /* __MORPHOS__ */
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