modules/javafx.graphics/src/main/native-iio/libjpeg7/jdct.h

*** 1,9 ****
--- 1,10 ----
  /*
   * jdct.h
   *
   * Copyright (C) 1994-1996, Thomas G. Lane.
+  * Modified 2002-2017 by Guido Vollbeding.
   * This file is part of the Independent JPEG Group's software.
   * For conditions of distribution and use, see the accompanying README file.
   *
   * This include file contains common declarations for the forward and
   * inverse DCT modules.  These declarations are private to the DCT managers
*** 76,92 ****
  /*
   * Each IDCT routine is responsible for range-limiting its results and
   * converting them to unsigned form (0..MAXJSAMPLE).  The raw outputs could
   * be quite far out of range if the input data is corrupt, so a bulletproof
   * range-limiting step is required.  We use a mask-and-table-lookup method
!  * to do the combined operations quickly.  See the comments with
   * prepare_range_limit_table (in jdmaster.c) for more info.
   */
  
! #define IDCT_range_limit(cinfo)  ((cinfo)->sample_range_limit + CENTERJSAMPLE)
  
! #define RANGE_MASK  (MAXJSAMPLE * 4 + 3) /* 2 bits wider than legal samples */
  
  
  /* Short forms of external names for systems with brain-damaged linkers. */
  
  #ifdef NEED_SHORT_EXTERNAL_NAMES
--- 77,95 ----
  /*
   * Each IDCT routine is responsible for range-limiting its results and
   * converting them to unsigned form (0..MAXJSAMPLE).  The raw outputs could
   * be quite far out of range if the input data is corrupt, so a bulletproof
   * range-limiting step is required.  We use a mask-and-table-lookup method
!  * to do the combined operations quickly, assuming that RANGE_CENTER
!  * (defined in jpegint.h) is a power of 2.  See the comments with
   * prepare_range_limit_table (in jdmaster.c) for more info.
   */
  
! #define RANGE_MASK  (RANGE_CENTER * 2 - 1)
! #define RANGE_SUBSET  (RANGE_CENTER - CENTERJSAMPLE)
  
! #define IDCT_range_limit(cinfo)  ((cinfo)->sample_range_limit - RANGE_SUBSET)
  
  
  /* Short forms of external names for systems with brain-damaged linkers. */
  
  #ifdef NEED_SHORT_EXTERNAL_NAMES
*** 389,393 ****
--- 392,416 ----
  #endif
  
  #ifndef MULTIPLY16V16           /* default definition */
  #define MULTIPLY16V16(var1,var2)  ((var1) * (var2))
  #endif
+ 
+ /* Like RIGHT_SHIFT, but applies to a DCTELEM.
+  * We assume that int right shift is unsigned if INT32 right shift is.
+  */
+ 
+ #ifdef RIGHT_SHIFT_IS_UNSIGNED
+ #define ISHIFT_TEMPS    DCTELEM ishift_temp;
+ #if BITS_IN_JSAMPLE == 8
+ #define DCTELEMBITS  16         /* DCTELEM may be 16 or 32 bits */
+ #else
+ #define DCTELEMBITS  32         /* DCTELEM must be 32 bits */
+ #endif
+ #define IRIGHT_SHIFT(x,shft)  \
+     ((ishift_temp = (x)) < 0 ? \
+      (ishift_temp >> (shft)) | ((~((DCTELEM) 0)) << (DCTELEMBITS-(shft))) : \
+      (ishift_temp >> (shft)))
+ #else
+ #define ISHIFT_TEMPS
+ #define IRIGHT_SHIFT(x,shft)    ((x) >> (shft))
+ #endif