cpp/openttd-patchpack/source Changeset - r1608:33d8a75e9241

Changeset - r1608:33d8a75e9241

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tron - 20 years ago 2005-03-30 19:52:26
tron@openttd.org

(svn r2112) -Fix: ExtMidi no longer halts the game while starting a song
-Fix: Redirect stdin/stdout/stderr of the ExtMidi process to /dev/null, to prevent it from writing to the terminal
While here give the ExtMidi functions canonical names

3 files changed with 76 insertions and 68 deletions:

extmidi.c

music_gui.c

ttd.c

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extmidi.c

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@@ @@ -5,6 +5,8 @@ @@
 #include "ttd.h"
 #include "hal.h"
 #include "sound.h"
 #include "string.h"
 #include <fcntl.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
@@ @@ -12,89 +14,97 @@ @@
 #include <sys/stat.h>
 #include <errno.h>
 static pid_t _pid;
 static struct {
 	char song[MAX_PATH];
 	int pid;
 } _midi;
 static void extmidi_kill(void)
 static void DoPlay(void);
 static void DoStop(void);
 static const char* ExtMidiStart(const char* const * parm)
+{
 	if (_pid > 0) {
 		kill(_pid, SIGKILL);
 		while (waitpid(_pid, NULL, WNOHANG) != _pid);
+	}
 	_pid = 0;
+}
 static const char *extmidi_start(const char * const *parm)
+{
 	_pid = 0;
 	_midi.song[0] = '\0';
 	_midi.pid = -1;
 	return NULL;
+}
-static void extmidi_stop(void)
+static void ExtMidiStop(void)
+{
 	extmidi_kill();
 	_midi.song[0] = '\0';
 	DoStop();
+}
 static void ExtMidiPlaySong(const char* filename)
+{
 	ttd_strlcpy(_midi.song, filename, lengthof(_midi.song));
 	DoStop();
+}
-static void extmidi_play_song(const char *filename)
+static void ExtMidiStopSong(void)
+{
 	extmidi_kill();
 	_pid = fork();
 	if (_pid < 0) {
 		fprintf(stderr, "extmidi: couldn't fork: %s\n", strerror(errno));
 		_pid = 0;
 		return;
+	}
 	if (_pid == 0) {
 		#if defined(MIDI_ARG)
 			execlp(msf.extmidi, "extmidi", MIDI_ARG, filename, NULL);
 		#else
 			execlp(msf.extmidi, "extmidi", filename, NULL);
 		#endif
 		fprintf(stderr, "extmidi: couldn't execl: %s\n", strerror(errno));
 		exit(0);
+	}
 	usleep(500);
 	if (_pid == waitpid(_pid, NULL, WNOHANG)) {
 		fprintf(stderr, "extmidi: play song failed\n");
 		_pid = 0;
 		usleep(5000);
+	}
 	_midi.song[0] = '\0';
 	DoStop();
+}
-static void extmidi_stop_song(void)
+static bool ExtMidiIsPlaying(void)
+{
 	extmidi_kill();
 	if (_midi.pid != -1 && waitpid(_midi.pid, NULL, WNOHANG) == _midi.pid)
 		_midi.pid = -1;
 	if (_midi.pid == -1 && _midi.song[0] != '\0') DoPlay();
 	return _midi.pid != -1;
+}
 static bool extmidi_is_playing(void)
+{
 	if (_pid == 0)
 		return 0;
 	if (waitpid(_pid, NULL, WNOHANG) == _pid) {
 		_pid = 0;
 		return 0;
+	}
 	return 1;
+}
 static void extmidi_set_volume(byte vol)
 static void ExtMidiSetVolume(byte vol)
+{
 	fprintf(stderr, "extmidi: set volume not implemented\n");
+}
 static void DoPlay(void)
+{
 	_midi.pid = fork();
 	switch (_midi.pid) {
 		case 0: {
 			int d;
 			close(0);
 			close(1);
 			close(2);
 			d = open("/dev/null", O_RDONLY);
 			if (d != -1) {
 				if (dup2(d, 1) != -1 && dup2(d, 2) != -1) {
 					#if defined(MIDI_ARG)
 						execlp(msf.extmidi, "extmidi", MIDI_ARG, _midi.song, NULL);
 					#else
 						execlp(msf.extmidi, "extmidi", _midi.song, NULL);
 					#endif
+				}
+			}
 			exit(1);
+		}
 		case -1:
 			fprintf(stderr, "extmidi: couldn't fork: %s\n", strerror(errno));
 			/* FALLTHROUGH */
 		default:
 			_midi.song[0] = '\0';
 			break;
+	}
+}
 static void DoStop(void)
+{
 	if (_midi.pid != -1) kill(_midi.pid, SIGTERM);
+}
 const HalMusicDriver _extmidi_music_driver = {
 	extmidi_start,
 	extmidi_stop,
 	extmidi_play_song,
 	extmidi_stop_song,
 	extmidi_is_playing,
 	extmidi_set_volume,
 	ExtMidiStart,
 	ExtMidiStop,
 	ExtMidiPlaySong,
 	ExtMidiStopSong,
 	ExtMidiIsPlaying,
 	ExtMidiSetVolume,
 };
 #endif /* __MORPHOS__ */

music_gui.c

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@@ @@ -181,7 +181,7 @@ void MusicLoop(void) @@
 	if (_song_is_active == false)
 		return;
 	if (!_music_driver->is_song_playing()) {
+	if (!_music_driver->is_song_playing() && _game_mode != GM_MENU) {
 		StopMusic();
 		SkipToNextSong();
 		PlayPlaylistSong();

ttd.c

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@@ @@ -641,7 +641,6 @@ int ttd_main(int argc, char* argv[]) @@
 	LoadDriver(SOUND_DRIVER, _ini_sounddriver);
 	LoadDriver(MUSIC_DRIVER, _ini_musicdriver);
 	LoadDriver(VIDEO_DRIVER, _ini_videodriver); // load video last, to prevent an empty window while sound and music loads
 	MusicLoop();
 	_savegame_sort_order = 1; // default sorting of savegames is by date, newest first
 #ifdef ENABLE_NETWORK
@@ @@ -1165,8 +1164,7 @@ void GameLoop(void) @@
 	InputLoop();
 	if (_game_mode != GM_MENU)
 		MusicLoop();
 	MusicLoop();
+}
 void BeforeSaveGame(void)

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