-int ff_rm_retrieve_cache (AVFormatContext *s, ByteIOContext *pb,
- AVStream *st, RMStream *rst, AVPacket *pkt);
+int ff_rm_retrieve_cache (AVFormatContext *s, AVIOContext *pb,
+ AVStream *st, RMStream *rst, AVPacket *pkt);
+
+/**
+ * Perform 4-bit block reordering for SIPR data.
+ *
+ * @param buf SIPR data
+ */
+void ff_rm_reorder_sipr_data(uint8_t *buf, int sub_packet_h, int framesize);