* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
+/** @file disobedience/log.c
+ * @brief State monitoring
+ *
+ * Disobedience relies on the server to tell when essentially anything changes,
+ * even if it initiated the change itself. It uses the @c log command to
+ * achieve this.
+ */
#include "disobedience.h"
static void log_scratched(void *v, const char *track, const char *user);
static void log_state(void *v, unsigned long state);
static void log_volume(void *v, int l, int r);
+static void log_rescanned(void *v);
/** @brief Callbacks for server state monitoring */
const disorder_eclient_log_callbacks log_callbacks = {
log_removed,
log_scratched,
log_state,
- log_volume
-};
-
-struct monitor {
- struct monitor *next;
- unsigned long mask;
- monitor_callback *callback;
- void *u;
+ log_volume,
+ log_rescanned
};
-static struct monitor *monitors;
-
+/** @brief Update everything */
void all_update(void) {
- playing_update();
- queue_update();
- recent_update();
- control_update();
+ ++suppress_actions;
+ event_raise("queue-changed", 0);
+ event_raise("recent-changed", 0);
+ event_raise("volume-changed", 0);
+ event_raise("added-changed", 0);
+ --suppress_actions;
}
+/** @brief Called when the client connects
+ *
+ * Depending on server and network state the TCP connection to the server may
+ * go up or down many times during the lifetime of Disobedience. This function
+ * is called whenever it connects.
+ */
static void log_connected(void attribute((unused)) *v) {
- struct callbackdata *cbd;
-
/* Don't know what we might have missed while disconnected so update
* everything. We get this at startup too and this is how we do the initial
* state fetch. */
all_update();
- /* Re-get the volume */
- cbd = xmalloc(sizeof *cbd);
- cbd->onerror = 0;
- disorder_eclient_volume(client, log_volume, -1, -1, cbd);
}
+/** @brief Called when the current track finishes playing */
static void log_completed(void attribute((unused)) *v,
const char attribute((unused)) *track) {
- playing = 0;
- playing_update();
- control_update();
}
+/** @brief Called when the current track fails */
static void log_failed(void attribute((unused)) *v,
const char attribute((unused)) *track,
const char attribute((unused)) *status) {
- playing = 0;
- playing_update();
- control_update();
}
+/** @brief Called when some track is moved within the queue */
static void log_moved(void attribute((unused)) *v,
const char attribute((unused)) *user) {
- queue_update();
+ event_raise("queue-changed", 0);
}
static void log_playing(void attribute((unused)) *v,
const char attribute((unused)) *track,
const char attribute((unused)) *user) {
- playing = 1;
- playing_update();
- control_update();
- /* we get a log_removed() anyway so we don't need to update_queue() from
- * here */
}
+/** @brief Called when a track is added to the queue */
static void log_queue(void attribute((unused)) *v,
struct queue_entry attribute((unused)) *q) {
- queue_update();
+ event_raise("queue-changed", 0);
}
+/** @brief Called when a track is added to the recently-played list */
static void log_recent_added(void attribute((unused)) *v,
struct queue_entry attribute((unused)) *q) {
- recent_update();
+ event_raise("recent-changed", 0);
}
+/** @brief Called when a track is removed from the recently-played list
+ *
+ * We do nothing here - log_recent_added() suffices.
+ */
static void log_recent_removed(void attribute((unused)) *v,
const char attribute((unused)) *id) {
/* nothing - log_recent_added() will trigger the relevant update */
}
+/** @brief Called when a track is removed from the queue */
static void log_removed(void attribute((unused)) *v,
const char attribute((unused)) *id,
const char attribute((unused)) *user) {
- queue_update();
+ event_raise("queue-changed", 0);
}
+/** @brief Called when the current track is scratched */
static void log_scratched(void attribute((unused)) *v,
const char attribute((unused)) *track,
const char attribute((unused)) *user) {
- playing = 0;
- playing_update();
- control_update();
}
+/** @brief Map from state bits to state change events */
+static const struct {
+ unsigned long bit;
+ const char *event;
+} state_events[] = {
+ { DISORDER_PLAYING_ENABLED, "enabled-changed" },
+ { DISORDER_RANDOM_ENABLED, "random-changed" },
+ { DISORDER_TRACK_PAUSED, "pause-changed" },
+ { DISORDER_PLAYING, "playing-changed" },
+};
+#define NSTATE_EVENTS (sizeof state_events / sizeof *state_events)
+
+/** @brief Called when a state change occurs */
static void log_state(void attribute((unused)) *v,
unsigned long state) {
- const struct monitor *m;
- const unsigned long changes = state ^ last_state;
+ unsigned long changes = state ^ last_state;
+ static int first = 1;
- D(("log_state %s", disorder_eclient_interpret_state(state)));
- last_state = state;
- /* Tell anything that cares about the state change */
- for(m = monitors; m; m = m->next) {
- if(changes & m->mask)
- m->callback(m->u);
+ ++suppress_actions;
+ if(first) {
+ changes = -1UL;
+ first = 0;
}
- /* If the track is paused or resume then the currently playing track is
- * refetched so that we can continue to correctly calculate the played so-far
- * field */
- playing_update();
+ D(("log_state old=%s new=%s changed=%s",
+ disorder_eclient_interpret_state(last_state),
+ disorder_eclient_interpret_state(state),
+ disorder_eclient_interpret_state(changes)));
+ last_state = state;
+ /* Notify interested parties what has changed */
+ for(unsigned n = 0; n < NSTATE_EVENTS; ++n)
+ if(changes & state_events[n].bit)
+ event_raise(state_events[n].event, 0);
+ --suppress_actions;
}
+/** @brief Called when volume changes */
static void log_volume(void attribute((unused)) *v,
int l, int r) {
- if(volume_l != l || volume_r != r) {
+ if(!rtp_supported && (volume_l != l || volume_r != r)) {
volume_l = l;
volume_r = r;
- control_update();
+ ++suppress_actions;
+ event_raise("volume-changed", 0);
+ --suppress_actions;
}
}
-void register_monitor(monitor_callback *callback,
- void *u,
- unsigned long mask) {
- struct monitor *m = xmalloc(sizeof *m);
-
- m->next = monitors;
- m->mask = mask;
- m->callback = callback;
- m->u = u;
- monitors = m;
+/** @brief Called when a rescan completes */
+static void log_rescanned(void attribute((unused)) *v) {
+ event_raise("added-changed", 0);
}
/*
~mdw / disorder / blobdiff