Resync mpc to r476 of svn.musepack.org. Improves error handling after seek.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31093 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 9 insertions, 4 deletions

diff --git a/apps/codecs/libmusepack/mpc_demux.c b/apps/codecs/libmusepack/mpc_demux.c
index 97a431e597..3f4c9d021a 100644
--- a/apps/codecs/libmusepack/mpc_demux.c
+++ b/apps/codecs/libmusepack/mpc_demux.c
@@ -625,10 +625,15 @@ static mpc_status mpc_demux_decode_inner(mpc_demux * d, mpc_frame_info * i)
 }
 
 mpc_status mpc_demux_decode(mpc_demux * d, mpc_frame_info * i) {
-        mpc_status s = mpc_demux_decode_inner(d, i);
-        if (MPC_IS_FAILURE(s))
-                i->bits = -1; // we pretend it's end of file
-        return s;
+        for(;;) {
+                // mpc_demux_decode_inner may return 0 samples and require repeated calls after a seek. Loop over until we have data to return.
+                mpc_status s = mpc_demux_decode_inner(d, i);
+                if (MPC_IS_FAILURE(s))
+                        i->bits = -1; // we pretend it's end of file
+
+                if (MPC_IS_FAILURE(s) || i->samples > 0)
+                        return s;
+        }
 }
 
 /* rockbox: not used