From c3e85687829af4694b5e347a19272b7a62672936 Mon Sep 17 00:00:00 2001
From: chme <christian.meffert@googlemail.com>
Date: Sun, 23 Oct 2016 10:16:04 +0200
Subject: [PATCH 1/2] [player] Add 'consume' mode

If consume mode is active the current song is removed from the queue at
eof or if the next song action is triggered.
---
 src/player.c | 36 ++++++++++++++++++++++++++++++++++++
 src/player.h |  4 ++++
 2 files changed, 40 insertions(+)

diff --git a/src/player.c b/src/player.c
index 17ea5172..3acf2175 100644
--- a/src/player.c
+++ b/src/player.c
@@ -190,6 +190,7 @@ static int clear_queue_on_stop_disabled;
 static enum play_status player_state;
 static enum repeat_mode repeat;
 static char shuffle;
+static char consume;
 
 /* Playback timer */
 #if defined(__linux__)
@@ -1221,6 +1222,9 @@ source_check(void)
 #endif
       history_add(cur_playing->id, cur_playing->item_id);
 
+      if (consume)
+	db_queue_delete_byitemid(cur_playing->item_id);
+
       /* Stop playback */
       if (!cur_playing->play_next)
 	{
@@ -2064,6 +2068,7 @@ get_status(void *arg, int *retval)
   memset(status, 0, sizeof(struct player_status));
 
   status->shuffle = shuffle;
+  status->consume = consume;
   status->repeat = repeat;
 
   status->volume = master_volume;
@@ -2519,6 +2524,7 @@ playback_next_bh(void *arg, int *retval)
 {
   struct player_source *ps;
   int ret;
+  uint32_t item_id;
 
   /*
    * The upper half is playback_pause, therefor the current playing item is
@@ -2535,6 +2541,8 @@ playback_next_bh(void *arg, int *retval)
   if (cur_streaming->output_start > cur_streaming->stream_start)
     history_add(cur_streaming->id, cur_streaming->item_id);
 
+  item_id = cur_streaming->item_id;
+
   ps = source_next();
   if (!ps)
     {
@@ -2559,6 +2567,9 @@ playback_next_bh(void *arg, int *retval)
       return COMMAND_END;
     }
 
+  if (consume)
+    db_queue_delete_byitemid(item_id);
+
   /* Silent status change - playback_start() sends the real status update */
   player_state = PLAY_PAUSED;
 
@@ -3029,6 +3040,18 @@ shuffle_set(void *arg, int *retval)
   return COMMAND_END;
 }
 
+static enum command_state
+consume_set(void *arg, int *retval)
+{
+  union player_arg *cmdarg = arg;
+
+  consume = cmdarg->intval;
+
+  listener_notify(LISTENER_OPTIONS);
+
+  *retval = 0;
+  return COMMAND_END;
+}
 /*
  * Removes all items from the history
  */
@@ -3286,6 +3309,18 @@ player_shuffle_set(int enable)
   return ret;
 }
 
+int
+player_consume_set(int enable)
+{
+  union player_arg cmdarg;
+  int ret;
+
+  cmdarg.intval = enable;
+
+  ret = commands_exec_sync(cmdbase, consume_set, NULL, &cmdarg);
+  return ret;
+}
+
 void
 player_queue_clear_history()
 {
@@ -3415,6 +3450,7 @@ player_init(void)
   player_state = PLAY_STOPPED;
   repeat = REPEAT_OFF;
   shuffle = 0;
+  consume = 0;
 
   history = (struct player_history *)calloc(1, sizeof(struct player_history));
 
diff --git a/src/player.h b/src/player.h
index faec7da3..000d3c77 100644
--- a/src/player.h
+++ b/src/player.h
@@ -44,6 +44,7 @@ struct player_status {
   enum play_status status;
   enum repeat_mode repeat;
   char shuffle;
+  char consume;
 
   int volume;
 
@@ -130,6 +131,9 @@ player_repeat_set(enum repeat_mode mode);
 int
 player_shuffle_set(int enable);
 
+int
+player_consume_set(int enable);
+
 
 void
 player_queue_clear_history(void);

From 1221244eedf950066e98018991f41c8aebe5e952 Mon Sep 17 00:00:00 2001
From: chme <christian.meffert@googlemail.com>
Date: Sun, 23 Oct 2016 10:16:35 +0200
Subject: [PATCH 2/2] [mpd] Implement consume command and return consume mode
 in status command

---
 src/mpd.c | 37 +++++++++++++++++++++++++++++++++++--
 1 file changed, 35 insertions(+), 2 deletions(-)

diff --git a/src/mpd.c b/src/mpd.c
index 333fd2bb..b984d997 100644
--- a/src/mpd.c
+++ b/src/mpd.c
@@ -731,7 +731,7 @@ mpd_command_status(struct evbuffer *evbuf, int argc, char **argv, char **errmsg)
       (status.repeat == REPEAT_OFF ? 0 : 1),
       status.shuffle,
       (status.repeat == REPEAT_SONG ? 1 : 0),
-      0 /* consume: not supported by forked-daapd, always return 'off' */,
+      status.consume,
       queue_version,
       queue_length,
       state);
@@ -840,6 +840,39 @@ mpd_command_stats(struct evbuffer *evbuf, int argc, char **argv, char **errmsg)
   return 0;
 }
 
+/*
+ * Command handler function for 'consume'
+ * Sets the consume mode, expects argument argv[1] to be an integer with
+ *   0 = disable consume
+ *   1 = enable consume
+ */
+static int
+mpd_command_consume(struct evbuffer *evbuf, int argc, char **argv, char **errmsg)
+{
+  int enable;
+  int ret;
+
+  if (argc < 2)
+    {
+      ret = asprintf(errmsg, "Missing argument for command 'consume'");
+      if (ret < 0)
+	DPRINTF(E_LOG, L_MPD, "Out of memory\n");
+      return ACK_ERROR_ARG;
+    }
+
+  ret = safe_atoi32(argv[1], &enable);
+  if (ret < 0)
+    {
+      ret = asprintf(errmsg, "Argument doesn't convert to integer: '%s'", argv[1]);
+      if (ret < 0)
+	DPRINTF(E_LOG, L_MPD, "Out of memory\n");
+      return ACK_ERROR_ARG;
+    }
+
+  player_consume_set(enable);
+  return 0;
+}
+
 /*
  * Command handler function for 'random'
  * Sets the shuffle mode, expects argument argv[1] to be an integer with
@@ -3759,7 +3792,7 @@ static struct mpd_command mpd_handlers[] =
      */
     {
       .mpdcommand = "consume",
-      .handler = mpd_command_ignore
+      .handler = mpd_command_consume
     },
     {
       .mpdcommand = "crossfade",