From 1cd62000f5a84c3a51913686f9c699a291d9842e Mon Sep 17 00:00:00 2001
From: Alessandro Decina <alessandro.d@gmail.com>
Date: Sun, 8 Dec 2013 15:24:58 +0100
Subject: [PATCH] applemedia: vtdec: fail gracefully when not negotiated

---
 sys/applemedia/vtdec.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/sys/applemedia/vtdec.c b/sys/applemedia/vtdec.c
index 87a193e2a6..68ad6c9fb2 100644
--- a/sys/applemedia/vtdec.c
+++ b/sys/applemedia/vtdec.c
@@ -257,6 +257,11 @@ gst_vtdec_handle_frame (GstVideoDecoder * decoder, GstVideoCodecFrame * frame)
   GstFlowReturn ret = GST_FLOW_OK;
   int decode_frame_number = frame->decode_frame_number;
 
+  if (vtdec->format_description == NULL) {
+    ret = GST_FLOW_NOT_NEGOTIATED;
+    goto out;
+  }
+
   GST_LOG_OBJECT (vtdec, "got input frame %d", decode_frame_number);
 
   ret = gst_vtdec_push_frames_if_needed (vtdec, FALSE, FALSE);
@@ -278,10 +283,11 @@ gst_vtdec_handle_frame (GstVideoDecoder * decoder, GstVideoCodecFrame * frame)
   if (status != noErr && FALSE)
     goto error;
 
-out:
   GST_LOG_OBJECT (vtdec, "submitted input frame %d", decode_frame_number);
 
-  CFRelease (cm_sample_buffer);
+out:
+  if (cm_sample_buffer)
+    CFRelease (cm_sample_buffer);
   return ret;
 
 error: