+
+int ff_msmpeg4_encode_init(MpegEncContext *s);
+void ff_msmpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
+void ff_msmpeg4_encode_ext_header(MpegEncContext *s);
+void ff_msmpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64],
+ int motion_x, int motion_y);
+
+int ff_msmpeg4_decode_init(AVCodecContext *avctx);
+int ff_msmpeg4_decode_picture_header(MpegEncContext *s);
+int ff_msmpeg4_decode_ext_header(MpegEncContext *s, int buf_size);