/*
* This file is part of DisOrder
- * Copyright (C) 2005, 2006, 2007 Richard Kettlewell
+ * Copyright (C) 2005-2008 Richard Kettlewell
+ * Portions (C) 2007 Mark Wooding
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* this is arranged by the @c disorder-normalize program (see @ref
* server/normalize.c).
*
- * @b Garbage @b Collection. This program deliberately does not use the
+7 * @b Garbage @b Collection. This program deliberately does not use the
* garbage collector even though it might be convenient to do so. This is for
* two reasons. Firstly some sound APIs use thread threads and we do not want
* to have to deal with potential interactions between threading and garbage
#include <fcntl.h>
#include <poll.h>
#include <sys/un.h>
+#include <sys/stat.h>
#include "configuration.h"
#include "syscalls.h"
#include "speaker-protocol.h"
#include "user.h"
#include "speaker.h"
+#include "printf.h"
+#include "version.h"
/** @brief Linked list of all prepared tracks */
struct track *tracks;
exit(0);
}
-/* Display version number and terminate. */
-static void version(void) {
- xprintf("disorder-speaker version %s\n", disorder_version_string);
- xfclose(stdout);
- exit(0);
-}
-
/** @brief Return the number of bytes per frame in @p format */
static size_t bytes_per_frame(const struct stream_header *format) {
return format->channels * format->bits / 8;
* main loop whenever the track's file descriptor is readable, assuming the
* buffer has not reached the maximum allowed occupancy.
*/
-static int fill(struct track *t) {
+static int speaker_fill(struct track *t) {
size_t where, left;
int n;
if(n == 0) {
D(("fill %s: eof detected", t->id));
t->eof = 1;
+ t->playable = 1;
return -1;
}
t->used += n;
+ if(t->used == sizeof t->buffer)
+ t->playable = 1;
}
return 0;
}
abandon();
}
+/** @brief Return nonzero if we want to play some audio
+ *
+ * We want to play audio if there is a current track; and it is not paused; and
+ * it is playable according to the rules for @ref track::playable.
+ */
+static int playable(void) {
+ return playing
+ && !paused
+ && playing->playable;
+}
+
/** @brief Play up to @p frames frames of audio
*
* It is always safe to call this function.
* - If there is not enough audio to play then it play what is available.
*
* If there are not enough frames to play then whatever is available is played
- * instead. It is up to mainloop() to ensure that play() is not called when
- * unreasonably only an small amounts of data is available to play.
+ * instead. It is up to mainloop() to ensure that speaker_play() is not called
+ * when unreasonably only an small amounts of data is available to play.
*/
-static void play(size_t frames) {
+static void speaker_play(size_t frames) {
size_t avail_frames, avail_bytes, written_frames;
ssize_t written_bytes;
- /* Make sure there's a track to play and it is not pasued */
- if(!playing || paused)
+ /* Make sure there's a track to play and it is not paused */
+ if(!playable())
return;
/* Make sure the output device is open */
if(device_state != device_open) {
* empty) wrap it back to the start. */
if(!playing->used || playing->start == (sizeof playing->buffer))
playing->start = 0;
+ /* If the buffer emptied out mark the track as unplayably */
+ if(!playing->used && !playing->eof) {
+ error(0, "track buffer emptied");
+ playing->playable = 0;
+ }
frames -= written_frames;
return;
}
0
};
-/** @brief Return nonzero if we want to play some audio
- *
- * We want to play audio if there is a current track; and it is not paused; and
- * there are at least @ref FRAMES frames of audio to play, or we are in sight
- * of the end of the current track.
- */
-static int playable(void) {
- return playing
- && !paused
- && (playing->used >= FRAMES || playing->eof);
-}
-
/** @brief Main event loop */
static void mainloop(void) {
struct track *t;
/* We want to play some audio */
if(device_state == device_open) {
if(backend->ready())
- play(3 * FRAMES);
+ speaker_play(3 * FRAMES);
} else {
/* We must be in _closed or _error, and it should be the latter, but we
* cope with either.
*
- * We most likely timed out, so now is a good time to retry. play()
- * knows to re-activate the device if necessary.
+ * We most likely timed out, so now is a good time to retry.
+ * speaker_play() knows to re-activate the device if necessary.
*/
- play(3 * FRAMES);
+ speaker_play(3 * FRAMES);
}
}
/* Perhaps a connection has arrived */
t = findtrack(id, 1/*create*/);
write(fd, "", 1); /* write an ack */
if(t->fd != -1) {
- error(0, "got a connection for a track that already has one");
+ error(0, "%s: already got a connection", id);
xclose(fd);
} else {
nonblock(fd);
error(0, "cannot play track because no connection arrived");
playing = t;
/* We attempt to play straight away rather than going round the loop.
- * play() is clever enough to perform any activation that is
+ * speaker_play() is clever enough to perform any activation that is
* required. */
- play(3 * FRAMES);
+ speaker_play(3 * FRAMES);
report();
break;
case SM_PAUSE:
paused = 0;
/* As for SM_PLAY we attempt to play straight away. */
if(playing)
- play(3 * FRAMES);
+ speaker_play(3 * FRAMES);
}
report();
break;
case SM_CANCEL:
- D(("SM_CANCEL %s", sm.id));
+ D(("SM_CANCEL %s", sm.id));
t = removetrack(sm.id);
if(t) {
if(t == playing) {
+ /* scratching the playing track */
sm.type = SM_FINISHED;
- strcpy(sm.id, playing->id);
- speaker_send(1, &sm);
playing = 0;
+ } else {
+ /* Could be scratching the playing track before it's quite got
+ * going, or could be just removing a track from the queue. We
+ * log more because there's been a bug here recently than because
+ * it's particularly interesting; the log message will be removed
+ * if no further problems show up. */
+ info("SM_CANCEL for nonplaying track %s", sm.id);
+ sm.type = SM_STILLBORN;
}
+ strcpy(sm.id, t->id);
destroy(t);
- } else
+ } else {
+ /* Probably scratching the playing track well before it's got
+ * going, but could indicate a bug, so we log this as an error. */
+ sm.type = SM_UNKNOWN;
error(0, "SM_CANCEL for unknown track %s", sm.id);
+ }
+ speaker_send(1, &sm);
report();
break;
case SM_RELOAD:
if(t->fd != -1
&& t->slot != -1
&& (fds[t->slot].revents & (POLLIN | POLLHUP)))
- fill(t);
+ speaker_fill(t);
/* Maybe we finished playing a track somewhere in the above */
maybe_finished();
/* If we don't need the sound device for now then close it for the benefit
static const int one = 1;
struct speaker_message sm;
const char *d;
+ char *dir;
set_progname(argv);
if(!setlocale(LC_CTYPE, "")) fatal(errno, "error calling setlocale");
while((n = getopt_long(argc, argv, "hVc:dDSs", options, 0)) >= 0) {
switch(n) {
case 'h': help();
- case 'V': version();
+ case 'V': version("disorder-speaker");
case 'c': configfile = optarg; break;
case 'd': debugging = 1; break;
case 'D': debugging = 0; break;
if(getuid() == 0 || geteuid() == 0) fatal(0, "do not run as root");
/* identify the backend used to play */
for(n = 0; backends[n]; ++n)
- if(backends[n]->backend == config->speaker_backend)
+ if(backends[n]->backend == config->api)
break;
if(!backends[n])
- fatal(0, "unsupported backend %d", config->speaker_backend);
+ fatal(0, "unsupported api %d", config->api);
backend = backends[n];
/* backend-specific initialization */
backend->init();
+ /* create the socket directory */
+ byte_xasprintf(&dir, "%s/speaker", config->home);
+ unlink(dir); /* might be a leftover socket */
+ if(mkdir(dir, 0700) < 0 && errno != EEXIST)
+ fatal(errno, "error creating %s", dir);
/* set up the listen socket */
listenfd = xsocket(PF_UNIX, SOCK_STREAM, 0);
memset(&addr, 0, sizeof addr);
addr.sun_family = AF_UNIX;
- snprintf(addr.sun_path, sizeof addr.sun_path, "%s/speaker",
+ snprintf(addr.sun_path, sizeof addr.sun_path, "%s/speaker/socket",
config->home);
if(unlink(addr.sun_path) < 0 && errno != ENOENT)
error(errno, "removing %s", addr.sun_path);
~mdw / disorder / blobdiff