/*
* This file is part of DisOrder.
* Copyright (C) 2004-2009 Richard Kettlewell
*
* 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
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see .
*/
/** @file server/play.c
* @brief Playing tracks
*
* This file is rather badly organized. Sorry. It's better than it was...
*/
#include "disorder-server.h"
#include
#define SPEAKER "disorder-speaker"
/** @brief The current playing track or NULL */
struct queue_entry *playing;
/** @brief Set when paused */
int paused;
static void finished(ev_source *ev);
static int start_child(struct queue_entry *q,
const struct pbgc_params *params,
void attribute((unused)) *bgdata);
static int prepare_child(struct queue_entry *q,
const struct pbgc_params *params,
void attribute((unused)) *bgdata);
static void ensure_next_scratch(ev_source *ev);
/** @brief File descriptor of our end of the socket to the speaker */
static int speaker_fd = -1;
/** @brief Set when shutting down */
static int shutting_down;
/* Speaker ------------------------------------------------------------------ */
/** @brief Called when speaker process terminates
*
* Currently kills of DisOrder completely. A future version could terminate
* the speaker when nothing was going on, or recover from failures, though any
* tracks with decoders already started would need to have them restarted.
*/
static int speaker_terminated(ev_source attribute((unused)) *ev,
pid_t attribute((unused)) pid,
int attribute((unused)) status,
const struct rusage attribute((unused)) *rusage,
void attribute((unused)) *u) {
disorder_fatal(0, "speaker subprocess %s", wstat(status));
}
/** @brief Called when we get a message from the speaker process */
static int speaker_readable(ev_source *ev, int fd,
void attribute((unused)) *u) {
struct speaker_message sm;
int ret = speaker_recv(fd, &sm);
if(ret < 0) return 0; /* EAGAIN */
if(!ret) { /* EOF */
ev_fd_cancel(ev, ev_read, fd);
return 0;
}
switch(sm.type) {
case SM_PAUSED:
/* track ID is paused, DATA seconds played */
D(("SM_PAUSED %s %ld", sm.id, sm.data));
playing->sofar = sm.data;
break;
case SM_FINISHED: /* scratched the playing track */
case SM_STILLBORN: /* scratched too early */
case SM_UNKNOWN: /* scratched WAY too early */
if(playing && !strcmp(sm.id, playing->id)) {
if((playing->state == playing_unplayed
|| playing->state == playing_started)
&& sm.type == SM_FINISHED)
playing->state = playing_ok;
finished(ev);
}
break;
case SM_PLAYING:
/* track ID is playing, DATA seconds played */
D(("SM_PLAYING %s %ld", sm.id, sm.data));
playing->sofar = sm.data;
break;
case SM_ARRIVED: {
/* track ID is now prepared */
struct queue_entry *q;
for(q = qhead.next; q != &qhead && strcmp(q->id, sm.id); q = q->next)
;
if(q && q->preparing) {
q->preparing = 0;
q->prepared = 1;
/* We might be waiting to play the now-prepared track */
play(ev);
}
break;
}
default:
disorder_error(0, "unknown speaker message type %d", sm.type);
}
return 0;
}
/** @brief Initialize the speaker process */
void speaker_setup(ev_source *ev) {
int sp[2];
pid_t pid;
struct speaker_message sm;
if(socketpair(PF_UNIX, SOCK_DGRAM, 0, sp) < 0)
disorder_fatal(errno, "error calling socketpair");
if(!(pid = xfork())) {
exitfn = _exit;
ev_signal_atfork(ev);
xdup2(sp[0], 0);
xdup2(sp[0], 1);
xclose(sp[0]);
xclose(sp[1]);
signal(SIGPIPE, SIG_DFL);
#if 0
execlp("valgrind", "valgrind", SPEAKER, "--config", configfile,
debugging ? "--debug" : "--no-debug",
log_default == &log_syslog ? "--syslog" : "--no-syslog",
(char *)0);
#else
execlp(SPEAKER, SPEAKER, "--config", configfile,
debugging ? "--debug" : "--no-debug",
log_default == &log_syslog ? "--syslog" : "--no-syslog",
(char *)0);
#endif
disorder_fatal(errno, "error invoking %s", SPEAKER);
}
ev_child(ev, pid, 0, speaker_terminated, 0);
speaker_fd = sp[1];
xclose(sp[0]);
cloexec(speaker_fd);
/* Wait for the speaker to be ready */
speaker_recv(speaker_fd, &sm);
nonblock(speaker_fd);
if(ev_fd(ev, ev_read, speaker_fd, speaker_readable, 0, "speaker read") < 0)
disorder_fatal(0, "error registering speaker socket fd");
}
/** @brief Tell the speaker to reload its configuration */
void speaker_reload(void) {
struct speaker_message sm;
memset(&sm, 0, sizeof sm);
sm.type = SM_RELOAD;
speaker_send(speaker_fd, &sm);
}
/* Track termination -------------------------------------------------------- */
/** @brief Called when the currently playing track finishes playing
* @param ev Event loop or NULL
*
* There are three places this is called from:
*
* 1) speaker_readable(), when the speaker tells us the playing track finished.
* (Technically the speaker lies a little to arrange for gapless play.)
*
* 2) player_finished(), when the player for a non-raw track (i.e. one that
* does not use the speaker) finishes.
*
* 3) quitting(), after signalling the decoder or player but possible before it
* has actually terminated. In this case @p ev is NULL, inhibiting any further
* attempt to play anything.
*/
static void finished(ev_source *ev) {
D(("finished playing=%p", (void *)playing));
if(!playing)
return;
if(playing->state != playing_scratched)
notify_not_scratched(playing->track, playing->submitter);
switch(playing->state) {
case playing_ok:
eventlog("completed", playing->track, (char *)0);
break;
case playing_scratched:
eventlog("scratched", playing->track, playing->scratched, (char *)0);
break;
case playing_failed:
eventlog("failed", playing->track, wstat(playing->wstat), (char *)0);
break;
default:
break;
}
queue_played(playing);
recent_write();
playing = 0;
/* Try to play something else */
if(ev)
play(ev);
}
/** @brief Called when a player or decoder process terminates
*
* This is called when a decoder process terminates (which might actually be
* some time before the speaker reports it as finished) or when a non-raw
* (i.e. non-speaker) player terminates. In the latter case it's imaginable
* that the OS has buffered the last few samples.
*
* NB. The finished track might NOT be in the queue (yet) - it might be a
* pre-chosen scratch.
*/
static int player_finished(ev_source *ev,
pid_t pid,
int status,
const struct rusage attribute((unused)) *rusage,
void *u) {
struct queue_entry *q = u;
D(("player_finished pid=%lu status=%#x",
(unsigned long)pid, (unsigned)status));
/* Record that this PID is dead. If we killed the track we might know this
* already, but also it might have exited or crashed. Either way we don't
* want to end up signalling it. */
q->pid = -1;
switch(q->state) {
case playing_unplayed:
case playing_random:
/* If this was a pre-prepared track then either it failed or we
* deliberately stopped it: it might have been removed from the queue, or
* moved down the queue, or the speaker might be on a break. So we leave
* it state alone for future use.
*/
break;
default:
/* We actually started playing this track. */
if(status) {
/* Don't override 'scratched' with 'failed'. */
if(q->state != playing_scratched)
q->state = playing_failed;
} else
q->state = playing_ok;
break;
}
/* Regardless we always report and record the status and do cleanup for
* prefork calls. */
if(status)
disorder_error(0, "player for %s %s", q->track, wstat(status));
if(q->type & DISORDER_PLAYER_PREFORK)
play_cleanup(q->pl, q->data);
q->wstat = status;
/* If this actually was the current track, and does not use the speaker
* process, then it must have finished. For raw-output players we will get a
* separate notification from the speaker process. */
if(q == playing
&& (q->type & DISORDER_PLAYER_TYPEMASK) != DISORDER_PLAYER_RAW)
finished(ev);
return 0;
}
/* Track initiation --------------------------------------------------------- */
/** @brief Find the player for @p q */
static const struct stringlist *find_player(const struct queue_entry *q) {
int n;
for(n = 0; n < config->player.n; ++n)
if(fnmatch(config->player.s[n].s[0], q->track, 0) == 0)
break;
if(n >= config->player.n)
return NULL;
else
return &config->player.s[n];
}
/** @brief Start to play @p q
* @param ev Event loop
* @param q Track to play/prepare
* @return @ref START_OK, @ref START_HARDFAIL or @ref START_SOFTFAIL
*
* This makes @p actually start playing. It calls prepare() if necessary and
* either sends an @ref SM_PLAY command or invokes the player itself in a
* subprocess.
*
* It's up to the caller to set @ref playing and @c playing->state (this might
* be changed in the future).
*/
static int start(ev_source *ev,
struct queue_entry *q) {
const struct stringlist *player;
int rc;
D(("start %s", q->id));
/* Find the player plugin. */
if(!(player = find_player(q)) < 0)
return START_HARDFAIL; /* No player */
if(!(q->pl = open_plugin(player->s[1], 0)))
return START_HARDFAIL;
q->type = play_get_type(q->pl);
/* Special handling for raw-format players */
if((q->type & DISORDER_PLAYER_TYPEMASK) == DISORDER_PLAYER_RAW) {
/* Make sure that the track is prepared */
if((rc = prepare(ev, q)))
return rc;
/* Now we're sure it's prepared, start it playing */
/* TODO actually it might not be fully prepared yet - it's all happening in
* a subprocess. See speaker.c for further discussion. */
struct speaker_message sm[1];
memset(sm, 0, sizeof sm);
strcpy(sm->id, q->id);
sm->type = SM_PLAY;
speaker_send(speaker_fd, sm);
D(("sent SM_PLAY for %s", sm->id));
/* Our caller will set playing and playing->state = playing_started */
return START_OK;
} else {
rc = play_background(ev, player, q, start_child, NULL);
if(rc == START_OK)
ev_child(ev, q->pid, 0, player_finished, q);
/* Our caller will set playing and playing->state = playing_started */
return rc;
}
}
/** @brief Child-process half of start()
* @return Process exit code
*
* Called in subprocess to execute non-raw-format players (via plugin).
*/
static int start_child(struct queue_entry *q,
const struct pbgc_params *params,
void attribute((unused)) *bgdata) {
int n;
/* Wait for a device to clear. This ugliness is now deprecated and will
* eventually be removed. */
if(params->waitdevice) {
ao_initialize();
if(*params->waitdevice) {
n = ao_driver_id(params->waitdevice);
if(n == -1)
disorder_fatal(0, "invalid libao driver: %s", params->waitdevice);
} else
n = ao_default_driver_id();
/* Make up a format. */
ao_sample_format format;
memset(&format, 0, sizeof format);
format.bits = 8;
format.rate = 44100;
format.channels = 1;
format.byte_format = AO_FMT_NATIVE;
int retries = 20;
struct timespec ts;
ts.tv_sec = 0;
ts.tv_nsec = 100000000; /* 0.1s */
ao_device *device;
while((device = ao_open_live(n, &format, 0)) == 0 && retries-- > 0)
nanosleep(&ts, 0);
if(device)
ao_close(device);
}
/* Play the track */
play_track(q->pl,
params->argv, params->argc,
params->rawpath,
q->track);
return 0;
}
/** @brief Prepare a track for later play
* @return @ref START_OK, @ref START_HARDFAIL or @ref START_SOFTFAIL
*
* This can be called either when we want to play the track or slightly before
* so that some samples are decoded and available in a buffer.
*
* Only applies to raw-format (i.e. speaker-using) players; everything else
* gets @c START_OK.
*/
int prepare(ev_source *ev,
struct queue_entry *q) {
const struct stringlist *player;
/* If there's a decoder (or player!) going we do nothing */
if(q->pid >= 0)
return START_OK;
/* If the track is already prepared, do nothing */
if(q->prepared || q->preparing)
return START_OK;
/* Find the player plugin */
if(!(player = find_player(q)) < 0)
return START_HARDFAIL; /* No player */
q->pl = open_plugin(player->s[1], 0);
q->type = play_get_type(q->pl);
if((q->type & DISORDER_PLAYER_TYPEMASK) != DISORDER_PLAYER_RAW)
return START_OK; /* Not a raw player */
int rc = play_background(ev, player, q, prepare_child, NULL);
if(rc == START_OK) {
ev_child(ev, q->pid, 0, player_finished, q);
q->preparing = 1;
/* Actually the track is still "in flight" */
rc = START_SOFTFAIL;
}
return rc;
}
/** @brief Child-process half of prepare()
* @return Process exit code
*
* Called in subprocess to execute the decoder for a raw-format player.
*
* @todo We currently run the normalizer from here in a double-fork. This is
* unsatisfactory for many reasons: we can't prevent it outliving the main
* server and we don't adequately report its exit status.
*/
static int prepare_child(struct queue_entry *q,
const struct pbgc_params *params,
void attribute((unused)) *bgdata) {
/* np will be the pipe to disorder-normalize */
int np[2];
if(socketpair(PF_UNIX, SOCK_STREAM, 0, np) < 0)
disorder_fatal(errno, "error calling socketpair");
/* Beware of the Leopard! On OS X 10.5.x, the order of the shutdown
* calls here DOES MATTER. If you do the SHUT_WR first then the SHUT_RD
* fails with "Socket is not connected". I think this is a bug but
* provided implementors either don't care about the order or all agree
* about the order, choosing the reliable order is an adequate
* workaround. */
xshutdown(np[1], SHUT_RD); /* decoder writes to np[1] */
xshutdown(np[0], SHUT_WR); /* normalize reads from np[0] */
blocking(np[0]);
blocking(np[1]);
/* Start disorder-normalize. We double-fork so that nothing has to wait
* for disorder-normalize. */
pid_t npid;
if(!(npid = xfork())) {
/* Grandchild of disorderd */
if(!xfork()) {
/* Great-grandchild of disorderd */
/* Connect to the speaker process */
struct sockaddr_un addr;
memset(&addr, 0, sizeof addr);
addr.sun_family = AF_UNIX;
snprintf(addr.sun_path, sizeof addr.sun_path,
"%s/speaker/socket", config->home);
int sfd = xsocket(PF_UNIX, SOCK_STREAM, 0);
if(connect(sfd, (const struct sockaddr *)&addr, sizeof addr) < 0)
disorder_fatal(errno, "connecting to %s", addr.sun_path);
/* Send the ID, with a NATIVE-ENDIAN 32 bit length */
uint32_t l = strlen(q->id);
if(write(sfd, &l, sizeof l) < 0
|| write(sfd, q->id, l) < 0)
disorder_fatal(errno, "writing to %s", addr.sun_path);
/* Await the ack */
if (read(sfd, &l, 1) < 0)
disorder_fatal(errno, "reading ack from %s", addr.sun_path);
/* Plumbing */
xdup2(np[0], 0);
xdup2(sfd, 1);
xclose(np[0]);
xclose(np[1]);
xclose(sfd);
/* TODO stderr shouldn't be redirected for disorder-normalize
* (but it should be for play_track() */
execlp("disorder-normalize", "disorder-normalize",
log_default == &log_syslog ? "--syslog" : "--no-syslog",
"--config", configfile,
(char *)0);
disorder_fatal(errno, "executing disorder-normalize");
/* End of the great-grandchild of disorderd */
}
/* Back in the grandchild of disorderd */
_exit(0);
/* End of the grandchild of disorderd */
}
/* Back in the child of disorderd */
/* Wait for the grandchild of disordered to finish */
int n;
while(waitpid(npid, &n, 0) < 0 && errno == EINTR)
;
/* Pass the file descriptor to the driver in an environment
* variable. */
char buffer[64];
snprintf(buffer, sizeof buffer, "DISORDER_RAW_FD=%d", np[1]);
if(putenv(buffer) < 0)
disorder_fatal(errno, "error calling putenv");
/* Close all the FDs we don't need */
xclose(np[0]);
/* Start the decoder itself */
play_track(q->pl,
params->argv, params->argc,
params->rawpath,
q->track);
return 0;
}
/** @brief Abandon a queue entry
*
* Called from c_remove() (but NOT when scratching a track). Only does
* anything to raw-format tracks. Terminates the background decoder and tells
* the speaker process to cancel the track.
*/
void abandon(ev_source attribute((unused)) *ev,
struct queue_entry *q) {
struct speaker_message sm;
if(q->pid < 0)
return; /* Not prepared. */
if((q->type & DISORDER_PLAYER_TYPEMASK) != DISORDER_PLAYER_RAW)
return; /* Not a raw player. */
/* Terminate the player. */
kill(-q->pid, config->signal);
/* Cancel the track. */
memset(&sm, 0, sizeof sm);
sm.type = SM_CANCEL;
strcpy(sm.id, q->id);
speaker_send(speaker_fd, &sm);
}
/* Random tracks ------------------------------------------------------------ */
/** @brief Called with a new random track
* @param ev Event loop
* @param track Track name
*/
static void chosen_random_track(ev_source *ev,
const char *track) {
struct queue_entry *q;
if(!track)
return;
/* Add the track to the queue */
q = queue_add(track, 0, WHERE_END, NULL, origin_random);
D(("picked %p (%s) at random", (void *)q, q->track));
queue_write();
/* Maybe a track can now be played */
play(ev);
}
/** @brief Maybe add a randomly chosen track
* @param ev Event loop
*
* Picking can take some time so the track will only be added after this
* function has returned.
*/
void add_random_track(ev_source *ev) {
struct queue_entry *q;
long qlen = 0;
/* If random play is not enabled then do nothing. */
if(shutting_down || !random_is_enabled())
return;
/* Count how big the queue is */
for(q = qhead.next; q != &qhead; q = q->next)
++qlen;
/* If it's smaller than the desired size then add a track */
if(qlen < config->queue_pad)
trackdb_request_random(ev, chosen_random_track);
}
/* Track initiation (part 2) ------------------------------------------------ */
/** @brief Attempt to play something
*
* This is called from numerous locations - whenever it might conceivably have
* become possible to play something.
*/
void play(ev_source *ev) {
struct queue_entry *q;
int random_enabled = random_is_enabled();
D(("play playing=%p", (void *)playing));
/* If we're shutting down, or there's something playing, or playing is not
* enabled, give up now */
if(shutting_down || playing || !playing_is_enabled()) return;
/* See if there's anything to play */
if(qhead.next == &qhead) {
/* Queue is empty. We could just wait around since there are periodic
* attempts to add a random track anyway. However they are rarer than
* attempts to force a track so we initiate one now. */
add_random_track(ev);
/* chosen_random_track() will call play() when a new random track has been
* added to the queue. */
return;
}
/* There must be at least one track in the queue. */
q = qhead.next;
/* If random play is disabled but the track is a non-adopted random one
* then don't play it. play() will be called again when random play is
* re-enabled. */
if(!random_enabled && q->origin == origin_random)
return;
D(("taken %p (%s) from queue", (void *)q, q->track));
/* Try to start playing. */
switch(start(ev, q)) {
case START_HARDFAIL:
if(q == qhead.next) {
queue_remove(q, 0); /* Abandon this track. */
queue_played(q);
recent_write();
}
/* Oh well, try the next one */
play(ev);
break;
case START_SOFTFAIL:
/* We'll try the same track again shortly. */
break;
case START_OK:
/* Remove from the queue */
if(q == qhead.next) {
queue_remove(q, 0);
queue_write();
}
/* It's become the playing track */
playing = q;
xtime(&playing->played);
playing->state = playing_started;
notify_play(playing->track, playing->submitter);
eventlog("playing", playing->track,
playing->submitter ? playing->submitter : (const char *)0,
(const char *)0);
/* Maybe add a random track. */
add_random_track(ev);
/* If there is another track in the queue prepare it now. This could
* potentially be a just-added random track. */
if(qhead.next != &qhead)
prepare(ev, qhead.next);
/* Make sure there is a prepared scratch */
ensure_next_scratch(ev);
break;
}
}
/* Miscelleneous ------------------------------------------------------------ */
/** @brief Return true if play is enabled */
int playing_is_enabled(void) {
const char *s = trackdb_get_global("playing");
return !s || !strcmp(s, "yes");
}
/** @brief Enable play */
void enable_playing(const char *who, ev_source *ev) {
trackdb_set_global("playing", "yes", who);
/* Add a random track if necessary. */
add_random_track(ev);
play(ev);
}
/** @brief Disable play */
void disable_playing(const char *who) {
trackdb_set_global("playing", "no", who);
}
/** @brief Return true if random play is enabled */
int random_is_enabled(void) {
const char *s = trackdb_get_global("random-play");
return !s || !strcmp(s, "yes");
}
/** @brief Enable random play */
void enable_random(const char *who, ev_source *ev) {
trackdb_set_global("random-play", "yes", who);
add_random_track(ev);
play(ev);
}
/** @brief Disable random play */
void disable_random(const char *who) {
trackdb_set_global("random-play", "no", who);
}
/* Scratching --------------------------------------------------------------- */
/** @brief Track to play next time something is scratched */
static struct queue_entry *next_scratch;
/** @brief Ensure there isa prepared scratch */
static void ensure_next_scratch(ev_source *ev) {
if(next_scratch) /* There's one already */
return;
if(!config->scratch.n) /* There are no scratches */
return;
int r = rand() * (double)config->scratch.n / (RAND_MAX + 1.0);
next_scratch = queue_add(config->scratch.s[r], NULL,
WHERE_NOWHERE, NULL, origin_scratch);
if(ev)
prepare(ev, next_scratch);
}
/** @brief Scratch a track
* @param who User responsible (or NULL)
* @param id Track ID (or NULL for current)
*/
void scratch(const char *who, const char *id) {
struct speaker_message sm;
D(("scratch playing=%p state=%d id=%s playing->id=%s",
(void *)playing,
playing ? playing->state : 0,
id ? id : "(none)",
playing ? playing->id : "(none)"));
/* There must be a playing track; it must be in a scratchable state; if a
* specific ID was mentioned it must be that track. */
if(playing
&& (playing->state == playing_started
|| playing->state == playing_paused)
&& (!id
|| !strcmp(id, playing->id))) {
/* Update state (for the benefit of the 'recent' list) */
playing->state = playing_scratched;
playing->scratched = who ? xstrdup(who) : 0;
/* Find the player and kill the whole process group */
if(playing->pid >= 0) {
D(("kill -%d -%lu", config->signal, (unsigned long)playing->pid));
kill(-playing->pid, config->signal);
}
/* Tell the speaker, if we think it'll care */
if((playing->type & DISORDER_PLAYER_TYPEMASK) == DISORDER_PLAYER_RAW) {
memset(&sm, 0, sizeof sm);
sm.type = SM_CANCEL;
strcpy(sm.id, playing->id);
speaker_send(speaker_fd, &sm);
D(("sending SM_CANCEL for %s", playing->id));
}
/* If playing is enabled then add a scratch to the queue. Having a scratch
* appear in the queue when further play is disabled is weird and
* contradicts implicit assumptions made elsewhere, so we try to avoid
* it. */
if(playing_is_enabled()) {
/* Try to make sure there is a scratch */
ensure_next_scratch(NULL);
/* Insert it at the head of the queue */
if(next_scratch){
next_scratch->submitter = who;
queue_insert_entry(&qhead, next_scratch);
eventlog_raw("queue", queue_marshall(next_scratch), (const char *)0);
next_scratch = NULL;
}
}
notify_scratch(playing->track, playing->submitter, who,
xtime(0) - playing->played);
}
}
/* Server termination ------------------------------------------------------- */
/** @brief Called from quit() to tear down everything belonging to this file */
void quitting(ev_source *ev) {
struct queue_entry *q;
/* Don't start anything new */
shutting_down = 1;
/* Shut down the current player */
if(playing) {
if(playing->pid >= 0)
kill(-playing->pid, config->signal);
playing->state = playing_quitting;
finished(0);
}
/* Zap any background decoders that are going */
for(q = qhead.next; q != &qhead; q = q->next)
if(q->pid >= 0) {
D(("kill -%d %lu", config->signal, (unsigned long)q->pid));
kill(-q->pid, config->signal);
}
/* Don't need the speaker any more */
ev_fd_cancel(ev, ev_read, speaker_fd);
xclose(speaker_fd);
}
/* Pause and resume --------------------------------------------------------- */
/** @brief Pause the playing track */
int pause_playing(const char *who) {
struct speaker_message sm;
long played;
/* Can't pause if already paused or if nothing playing. */
if(!playing || paused) return 0;
switch(playing->type & DISORDER_PLAYER_TYPEMASK) {
case DISORDER_PLAYER_STANDALONE:
if(!(playing->type & DISORDER_PLAYER_PAUSES)) {
default:
disorder_error(0, "cannot pause because player is not powerful enough");
return -1;
}
if(play_pause(playing->pl, &played, playing->data)) {
disorder_error(0, "player indicates it cannot pause");
return -1;
}
xtime(&playing->lastpaused);
playing->uptopause = played;
playing->lastresumed = 0;
break;
case DISORDER_PLAYER_RAW:
memset(&sm, 0, sizeof sm);
sm.type = SM_PAUSE;
speaker_send(speaker_fd, &sm);
break;
}
if(who)
disorder_info("paused by %s", who);
notify_pause(playing->track, who);
paused = 1;
if(playing->state == playing_started)
playing->state = playing_paused;
eventlog("state", "pause", (char *)0);
return 0;
}
/** @brief Resume playing after a pause */
void resume_playing(const char *who) {
struct speaker_message sm;
if(!paused) return;
paused = 0;
if(!playing) return;
switch(playing->type & DISORDER_PLAYER_TYPEMASK) {
case DISORDER_PLAYER_STANDALONE:
if(!(playing->type & DISORDER_PLAYER_PAUSES)) {
default:
/* Shouldn't happen */
return;
}
play_resume(playing->pl, playing->data);
xtime(&playing->lastresumed);
break;
case DISORDER_PLAYER_RAW:
memset(&sm, 0, sizeof sm);
sm.type = SM_RESUME;
speaker_send(speaker_fd, &sm);
break;
}
if(who) disorder_info("resumed by %s", who);
notify_resume(playing->track, who);
if(playing->state == playing_paused)
playing->state = playing_started;
eventlog("state", "resume", (char *)0);
}
/*
Local Variables:
c-basic-offset:2
comment-column:40
fill-column:79
indent-tabs-mode:nil
End:
*/