player_thread: fix assertion failure due to wrong music pipe on seek

When one song is played twice, and the decoder is working on the
second "instance", but the first should be seeked, the check in
player_seek_decoder() may assume that it can reuse the decoder without
exchanging pipes.  The last thing was the mistake: the pipe pointer
was different, which led to an assertion failure.  This patch adds
another check which exchanges the player pipe.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/player_thread.c b/src/player_thread.c
index 3d2ebcb42..d428484c7 100644
--- a/src/player_thread.c
+++ b/src/player_thread.c
@@ -334,6 +334,14 @@ static bool player_seek_decoder(struct player *player)
 			return false;
 		}
 	} else {
+		if (!player_dc_at_current_song(player)) {
+			/* the decoder is already decoding the "next" song,
+			   but it is the same song file; exchange the pipe */
+			music_pipe_clear(player->pipe, player_buffer);
+			music_pipe_free(player->pipe);
+			player->pipe = dc.pipe;
+		}
+
 		pc.next_song = NULL;
 		player->queued = false;
 	}