void *vpx_svc_get_buffer(const SvcContext *svc_ctx);
/**
+ * return size of two pass rate control stats data to be returned by
+ * vpx_svc_get_rc_stats_buffer
+ */
+size_t vpx_svc_get_rc_stats_buffer_size(const SvcContext *svc_ctx);
+
+/**
+ * return buffer two pass of rate control stats data
+ */
+char *vpx_svc_get_rc_stats_buffer(const SvcContext *svc_ctx);
+
+/**
* return spatial resolution of the specified layer
*/
vpx_codec_err_t vpx_svc_get_layer_resolution(const SvcContext *svc_ctx,