#define MAX_COEF_BITS 14
#endif
+/* The legal range of a spatial difference is
+ * -32767 .. +32768.
+ * Hence the magnitude should always fit in 16 bits.
+ */
+
+#define MAX_DIFF_BITS 16
+
/* Derived data constructed for each Huffman table */
typedef struct {
- unsigned int ehufco[256]; /* code for each symbol */
- char ehufsi[256]; /* length of code for each symbol */
+ unsigned int ehufco[256]; /* code for each symbol */
+ char ehufsi[256]; /* length of code for each symbol */
/* If no code has been allocated for a symbol S, ehufsi[S] contains 0 */
} c_derived_tbl;
/* Short forms of external names for systems with brain-damaged linkers. */
#ifdef NEED_SHORT_EXTERNAL_NAMES
-#define jpeg_make_c_derived_tbl jMkCDerived
-#define jpeg_gen_optimal_table jGenOptTbl
+#define jpeg_make_c_derived_tbl jMkCDerived
+#define jpeg_gen_optimal_table jGenOptTbl
#endif /* NEED_SHORT_EXTERNAL_NAMES */
/* Expand a Huffman table definition into the derived format */
EXTERN(void) jpeg_make_c_derived_tbl
- JPP((j_compress_ptr cinfo, boolean isDC, int tblno,
- c_derived_tbl ** pdtbl));
+ JPP((j_compress_ptr cinfo, boolean isDC, int tblno,
+ c_derived_tbl ** pdtbl));
/* Generate an optimal table definition given the specified counts */
EXTERN(void) jpeg_gen_optimal_table
- JPP((j_compress_ptr cinfo, JHUFF_TBL * htbl, long freq[]));
+ JPP((j_compress_ptr cinfo, JHUFF_TBL * htbl, long freq[]));