X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;f=src%2Fjpeg%2Flibijg%2Fjchuff.h;h=6b0570ea4b88ec53dac42454277911c4d2d0beeb;hb=933fb20f37f5f900c53c59b2a739e18303bd60d8;hp=a9599fc1e6f9613ca5b7ce02a3b734f0c89cba51;hpb=a26e6f06a76ec85504cf65288e7c47f2cd728641;p=gdcm.git

diff --git a/src/jpeg/libijg/jchuff.h b/src/jpeg/libijg/jchuff.h
index a9599fc1..6b0570ea 100644
--- a/src/jpeg/libijg/jchuff.h
+++ b/src/jpeg/libijg/jchuff.h
@@ -22,26 +22,33 @@
 #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[]));