+int ff_cbs_read_signed(CodedBitstreamContext *ctx, GetBitContext *gbc,
+ int width, const char *name,
+ const int *subscripts, int32_t *write_to,
+ int32_t range_min, int32_t range_max);
+
+int ff_cbs_write_signed(CodedBitstreamContext *ctx, PutBitContext *pbc,
+ int width, const char *name,
+ const int *subscripts, int32_t value,
+ int32_t range_min, int32_t range_max);
+
+// The largest unsigned value representable in N bits, suitable for use as