playlistfs: use play(1) for format detection and decoding
cinap_lenrek
parent
a170c952ff
commit
8bfd915415
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@ -119,22 +119,12 @@ The
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flag can be used to specify a mount point other than
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.BR /mnt .
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.PP
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The files to be played are recognized by one of four extensions, and an appropriate
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player is then selected to play them. Files without a recognized extension are played by the
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.I pac
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player:
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.TP
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\&.mp3
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/bin/games/mp3dec
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.TP
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\&.pac
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/bin/games/pac4dec
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.TP
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\&.pcm
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/bin/cp
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.TP
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\&.ogg
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/bin/games/vorbisdec
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.B Playlistfs
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uses the
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.IR audio (1)
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decoders by running
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.IR play (1)
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for format detection and conversion to pcm.
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.SH FILES
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.BR /srv/playlistfs.\f2user\fP :
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default
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@ -152,4 +142,6 @@ Volume control file
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.SH SOURCE
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.B /sys/src/games/music/playlistfs
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.SH SEE ALSO
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.IR play (1),
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.IR audio (1),
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.IR juke (7).
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@ -5,13 +5,6 @@
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#include "pool.h"
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#include "playlist.h"
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enum {
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Pac,
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Mp3,
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Pcm,
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Ogg,
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};
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typedef struct Playfd Playfd;
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struct Playfd {
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@ -24,102 +17,38 @@ struct Playfd {
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Channel *full, *empty, *playout, *spare;
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Channel *playc, *pacc;
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char *playprog[] = {
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[Pac] = "/bin/games/pac4dec",
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[Mp3] = "/bin/games/mp3dec",
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[Pcm] = "/bin/cp",
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[Ogg] = "/bin/games/vorbisdec",
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};
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ulong totbytes, totbuffers;
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static char curfile[8192];
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void
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pac4dec(void *a)
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decexec(void *a)
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{
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char buf[256];
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Playfd *pfd;
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Pacbuf *pb;
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int fd, type;
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char *ext, buf[256];
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static char args[6][32];
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char *argv[6] = {args[0], args[1], args[2], args[3], args[4], args[5]};
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threadsetname("pac4dec");
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threadsetname("decexec");
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pfd = a;
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close(pfd->cfd); /* read fd */
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ext = strrchr(pfd->filename, '.');
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fd = open(pfd->filename, OREAD);
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if (fd < 0 && ext == nil){
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// Try the alternatives
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ext = buf + strlen(pfd->filename);
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snprint(buf, sizeof buf, "%s.pac", pfd->filename);
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fd = open(buf, OREAD);
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if (fd < 0){
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snprint(buf, sizeof buf, "%s.mp3", pfd->filename);
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fd = open(buf, OREAD);
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}
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if (fd < 0){
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snprint(buf, sizeof buf, "%s.ogg", pfd->filename);
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fd = open(buf, OREAD);
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}
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if (fd < 0){
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snprint(buf, sizeof buf, "%s.pcm", pfd->filename);
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fd = open(buf, OREAD);
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}
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}
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if (fd < 0){
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if (debug & DbgPlayer)
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fprint(2, "pac4dec: %s: %r", pfd->filename);
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pb = nbrecvp(spare);
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pb->cmd = Error;
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pb->off = 0;
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pb->len = snprint(pb->data, sizeof(pb->data), "startplay: %s: %r", pfd->filename);
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sendp(full, pb);
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threadexits("open");
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}
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dup(pfd->fd, 1);
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close(pfd->fd);
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if(ext == nil || strcmp(ext, ".pac") == 0){
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type = Pac;
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snprint(args[0], sizeof args[0], "pac4dec");
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snprint(args[1], sizeof args[1], "/fd/%d", fd);
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snprint(args[2], sizeof args[2], "/fd/1");
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argv[3] = nil;
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}else if(strcmp(ext, ".mp3") == 0){
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type = Mp3;
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snprint(args[0], sizeof args[0], "mp3dec");
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snprint(args[1], sizeof args[1], "-q");
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snprint(args[2], sizeof args[1], "-s");
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snprint(args[3], sizeof args[1], "/fd/%d", fd);
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argv[4] = nil;
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}else if(strcmp(ext, ".ogg") == 0){
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type = Ogg;
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snprint(args[0], sizeof args[0], "vorbisdec");
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argv[1] = nil;
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argv[2] = nil;
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argv[3] = nil;
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dup(fd, 0);
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}else{
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type = Pcm;
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snprint(args[0], sizeof args[0], "cat");
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snprint(args[1], sizeof args[1], "/fd/%d", fd);
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argv[2] = nil;
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argv[3] = nil;
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if(pfd->fd != 1){
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dup(pfd->fd, 1);
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close(pfd->fd);
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}
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close(0); open("/dev/null", OREAD);
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close(2); open("/dev/null", OWRITE);
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strncpy(buf, pfd->filename, sizeof(buf)-1);
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buf[sizeof(buf)-1] = 0;
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free(pfd->filename);
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free(pfd);
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if (debug & DbgPlayer)
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fprint(2, "procexecl %s %s %s %s\n",
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playprog[type], argv[0], argv[1], argv[2]);
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procexec(nil, playprog[type], argv);
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procexecl(nil, "/bin/play", "play", "-o", "/fd/1", buf, nil);
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if((pb = nbrecvp(spare)) == nil)
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pb = malloc(sizeof(Pacbuf));
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pb->cmd = Error;
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pb->off = 0;
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pb->len = snprint(pb->data, sizeof(pb->data), "startplay: %s: exec", playprog[type]);
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pb->len = snprint(pb->data, sizeof(pb->data), "startplay: exec play failed");
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sendp(full, pb);
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threadexits(playprog[type]);
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threadexits("exec");
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}
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static int
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@ -140,7 +69,7 @@ startplay(ushort n)
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pfd->filename = file; /* mallocated already */
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pfd->fd = fd[1];
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pfd->cfd = fd[0];
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procrfork(pac4dec, pfd, 4096, RFFDG);
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procrfork(decexec, pfd, 4096, RFFDG);
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close(fd[1]); /* write fd, for pac4dec */
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return fd[0]; /* read fd */
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}
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@ -166,8 +95,22 @@ rtsched(void)
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free(ctl);
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}
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static void
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boost(void)
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{
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int fd;
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char *ctl;
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ctl = smprint("/proc/%ud/ctl", getpid());
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if((fd = open(ctl, ORDWR)) >= 0) {
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fprint(fd, "pri 13");
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close(fd);
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}
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free(ctl);
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}
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void
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pacproc(void*)
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decproc(void*)
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{
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Pmsg playstate, newstate;
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int fd;
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@ -178,7 +121,7 @@ pacproc(void*)
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{nil, nil, CHANEND},
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};
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threadsetname("pacproc");
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threadsetname("decproc");
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close(srvfd[1]);
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newstate.cmd = playstate.cmd = Stop;
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newstate.off = playstate.off = 0;
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@ -235,7 +178,7 @@ pacproc(void*)
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a[0].op = CHANNOP;
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switch(newstate.cmd){
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default:
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sysfatal("pacproc: unexpected newstate %d", newstate.cmd);
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sysfatal("decproc: unexpected newstate %d", newstate.cmd);
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case Stop:
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/* Wait for state to change */
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break;
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@ -271,7 +214,7 @@ pcmproc(void*)
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/*
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* This is the real-time proc.
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* It gets its input from two sources, full data/control buffers from the pacproc
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* It gets its input from two sources, full data/control buffers from the decproc
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* which mixes decoded data with control messages, and data buffers from the pcmproc's
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* (*this* proc's) own internal playout buffer.
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* When a command is received on the `full' channel containing a command that warrants
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@ -286,6 +229,7 @@ pcmproc(void*)
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newstate.cmd = Stop;
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newstate.off = 0;
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// rtsched();
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boost();
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for(;;){
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if(newstate.m != localstate.m){
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playupdate(newstate, nil);
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@ -293,7 +237,7 @@ pcmproc(void*)
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}
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switch(alt(a)){
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case 0:
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/* buffer received from pacproc */
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/* buffer received from decproc */
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if((debug & DbgPcm) && localstate.m != prevstate.m){
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fprint(2, "pcm, full: %s-%d, local state is %s-%d\n",
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statetxt[pb->cmd], pb->off,
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@ -413,7 +357,7 @@ playinit(void)
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sendp(spare, malloc(sizeof(Pacbuf)));
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playc = chancreate(sizeof(Pmsg), 1);
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procrfork(pacproc, nil, 32*1024, RFFDG);
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procrfork(decproc, nil, 32*1024, RFFDG);
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procrfork(pcmproc, nil, 32*1024, RFFDG);
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}
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