player_control: bundle "get" functions in pc_get_status()

The new player_status struct replaces a bunch of playerGetX()
functions.  When we add proper locking to the player_control struct,
we will only need to lock once for the "status" command.

src/command.c

@@ -453,11 +453,14 @@ handle_status(struct client *client,
 	      G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[])
 {
 	const char *state = NULL;
+	struct player_status player_status;
 	int updateJobId;
 	char *error;
 	int song;
 
-	switch (getPlayerState()) {
+	pc_get_status(&player_status);
+
+	switch (player_status.state) {
 	case PLAYER_STATE_STOP:
 		state = "stop";
 		break;
@@ -497,17 +500,19 @@ handle_status(struct client *client,
 			      song, playlist_get_song_id(&g_playlist, song));
 	}
 
-	if (getPlayerState() != PLAYER_STATE_STOP) {
-		const struct audio_format *af = player_get_audio_format();
+	if (player_status.state != PLAYER_STATE_STOP) {
 		client_printf(client,
 			      COMMAND_STATUS_TIME ": %i:%i\n"
 			      "elapsed: %1.3f\n"
-			      COMMAND_STATUS_BITRATE ": %li\n"
+			      COMMAND_STATUS_BITRATE ": %u\n"
 			      COMMAND_STATUS_AUDIO ": %u:%u:%u\n",
-			      getPlayerElapsedTime(), getPlayerTotalTime(),
-			      pc.elapsed_time,
-			      getPlayerBitRate(),
-			      af->sample_rate, af->bits, af->channels);
+			      (int)(player_status.elapsed_time + 0.5),
+			      (int)(player_status.total_time + 0.5),
+			      player_status.elapsed_time,
+			      player_status.bit_rate,
+			      player_status.audio_format.sample_rate,
+			      player_status.audio_format.bits,
+			      player_status.audio_format.channels);
 	}
 
 	if ((updateJobId = isUpdatingDB())) {

src/player_control.c

@@ -129,19 +129,17 @@ void playerSetPause(int pause_flag)
 	}
 }
 
-int getPlayerElapsedTime(void)
+void
+pc_get_status(struct player_status *status)
 {
-	return (int)(pc.elapsed_time + 0.5);
-}
+	status->state = pc.state;
 
-unsigned long getPlayerBitRate(void)
-{
-	return pc.bit_rate;
-}
-
-int getPlayerTotalTime(void)
-{
-	return (int)(pc.total_time + 0.5);
+	if (pc.state != PLAYER_STATE_STOP) {
+		status->bit_rate = pc.bit_rate;
+		status->audio_format = pc.audio_format;
+		status->total_time = pc.total_time;
+		status->elapsed_time = pc.elapsed_time;
+	}
 }
 
 enum player_state getPlayerState(void)

src/player_control.h

@@ -60,6 +60,14 @@ enum player_error {
 	PLAYER_ERROR_FILENOTFOUND,
 };
 
+struct player_status {
+	enum player_state state;
+	uint16_t bit_rate;
+	struct audio_format audio_format;
+	float total_time;
+	float elapsed_time;
+};
+
 struct player_control {
 	unsigned buffer_chunks;
 
@@ -112,11 +120,8 @@ void playerPause(void);
 
 void playerKill(void);
 
-int getPlayerTotalTime(void);
-
-int getPlayerElapsedTime(void);
-
-unsigned long getPlayerBitRate(void);
+void
+pc_get_status(struct player_status *status);
 
 enum player_state getPlayerState(void);
 
@@ -151,12 +156,6 @@ float getPlayerCrossFade(void);
 
 double getPlayerTotalPlayTime(void);
 
-static inline const struct audio_format *
-player_get_audio_format(void)
-{
-	return &pc.audio_format;
-}
-
 void playerInit(void);
 
 #endif

src/playlist_state.c

@@ -51,10 +51,14 @@
 void
 playlist_state_save(FILE *fp, const struct playlist *playlist)
 {
+	struct player_status player_status;
+
+	pc_get_status(&player_status);
+
 	fprintf(fp, "%s", PLAYLIST_STATE_FILE_STATE);
 
 	if (playlist->playing) {
-		switch (getPlayerState()) {
+		switch (player_status.state) {
 		case PLAYER_STATE_PAUSE:
 			fprintf(fp, "%s\n", PLAYLIST_STATE_FILE_STATE_PAUSE);
 			break;
@@ -65,7 +69,7 @@ playlist_state_save(FILE *fp, const struct playlist *playlist)
 			queue_order_to_position(&playlist->queue,
 						playlist->current));
 		fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_TIME,
-			getPlayerElapsedTime());
+			(int)player_status.elapsed_time);
 	} else {
 		fprintf(fp, "%s\n", PLAYLIST_STATE_FILE_STATE_STOP);
 
@@ -204,14 +208,20 @@ playlist_state_restore(const char *line, FILE *fp, struct playlist *playlist)
 unsigned
 playlist_state_get_hash(const struct playlist *playlist)
 {
+	struct player_status player_status;
+
+	pc_get_status(&player_status);
+
 	return playlist->queue.version ^
-		(getPlayerElapsedTime() << 8) ^
+		(player_status.state != PLAYER_STATE_STOP
+		 ? ((int)player_status.elapsed_time << 8)
+		 : 0) ^
 		(playlist->current >= 0
 		 ? (queue_order_to_position(&playlist->queue,
 					    playlist->current) << 16)
 		 : 0) ^
 		((int)getPlayerCrossFade() << 20) ^
-		(getPlayerState() << 24) ^
+		(player_status.state << 24) ^
 		(playlist->queue.random << 27) ^
 		(playlist->queue.repeat << 28) ^
 		(playlist->queue.single << 29) ^