pipeline: input data is now copied to the output buffer before processing

src/pipeline.c

@@ -183,7 +183,8 @@ enum ec3_status ec3_pipeline_decode_cluster(
 	size_t *out_len)
 {
 	b_queue_entry *cur = b_queue_first(&pipeline->p_stages);
-	void *src = in;
+	memcpy(out, in, in_len);
+	void *src = out;
 	size_t stage_in_size = in_len;
 	size_t stage_out_size = 0;