-void ctf_integer_read(struct stream_pos *pos, struct definition *definition);
-void ctf_integer_write(struct stream_pos *pos, struct definition *definition);
-void ctf_float_read(struct stream_pos *pos, struct definition *definition);
-void ctf_float_write(struct stream_pos *pos, struct definition *definition);
-void ctf_string_read(struct stream_pos *pos, struct definition *definition);
-void ctf_string_write(struct stream_pos *pos, struct definition *definition);
-void ctf_enum_read(struct stream_pos *pos, struct definition *definition);
-void ctf_enum_write(struct stream_pos *pos, struct definition *definition);
-void ctf_struct_rw(struct stream_pos *pos, struct definition *definition);
-void ctf_variant_rw(struct stream_pos *pos, struct definition *definition);
-void ctf_array_rw(struct stream_pos *pos, struct definition *definition);
-void ctf_sequence_rw(struct stream_pos *pos, struct definition *definition);
-
-void ctf_move_pos_slow(struct ctf_stream_pos *pos, size_t offset, int whence);
+int ctf_integer_read(struct stream_pos *pos, struct definition *definition);
+int ctf_integer_write(struct stream_pos *pos, struct definition *definition);
+int ctf_float_read(struct stream_pos *pos, struct definition *definition);
+int ctf_float_write(struct stream_pos *pos, struct definition *definition);
+int ctf_string_read(struct stream_pos *pos, struct definition *definition);
+int ctf_string_write(struct stream_pos *pos, struct definition *definition);
+int ctf_enum_read(struct stream_pos *pos, struct definition *definition);
+int ctf_enum_write(struct stream_pos *pos, struct definition *definition);
+int ctf_struct_rw(struct stream_pos *pos, struct definition *definition);
+int ctf_variant_rw(struct stream_pos *pos, struct definition *definition);
+int ctf_array_read(struct stream_pos *pos, struct definition *definition);
+int ctf_array_write(struct stream_pos *pos, struct definition *definition);
+int ctf_sequence_read(struct stream_pos *pos, struct definition *definition);
+int ctf_sequence_write(struct stream_pos *pos, struct definition *definition);
+
+void ctf_packet_seek(struct stream_pos *pos, size_t index, int whence);