diff options
Diffstat (limited to 'extmidi.c')
| -rw-r--r-- | extmidi.c | 126 |
1 files changed, 68 insertions, 58 deletions
@@ -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) -{ - if (_pid > 0) { - kill(_pid, SIGKILL); - while (waitpid(_pid, NULL, WNOHANG) != _pid); - } - _pid = 0; -} +static void DoPlay(void); +static void DoStop(void); -static const char *extmidi_start(const char * const *parm) +static const char* ExtMidiStart(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 extmidi_play_song(const char *filename) +static void ExtMidiPlaySong(const char* filename) { - 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; + ttd_strlcpy(_midi.song, filename, lengthof(_midi.song)); + DoStop(); +} - usleep(5000); - } +static void ExtMidiStopSong(void) +{ + _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) +static void ExtMidiSetVolume(byte vol) { - if (_pid == 0) - return 0; + fprintf(stderr, "extmidi: set volume not implemented\n"); +} - if (waitpid(_pid, NULL, WNOHANG) == _pid) { - _pid = 0; - return 0; +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; } - - return 1; } -static void extmidi_set_volume(byte vol) +static void DoStop(void) { - fprintf(stderr, "extmidi: set volume not implemented\n"); + 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__ */ |