Format preprocessor macros more consistently

Within the libjpeg API code, it seems to be more the convention than not
to separate the macro name and value by two or more spaces, which
improves general readability.  Making this consistent across all of
libjpeg-turbo is less about my individual preferences and more about
making it easy to automatically detect variations from our chosen
formatting convention.  I intend to release the script I'm using to
validate this stuff, once it matures and stabilizes a bit.

Author: dcommander

jcarith.c

@@ -63,8 +63,8 @@ typedef arith_entropy_encoder *arith_entropy_ptr;
  * in the lower bits (mask 0x7F).
  */
 
-#define DC_STAT_BINS 64
-#define AC_STAT_BINS 256
+#define DC_STAT_BINS  64
+#define AC_STAT_BINS  256
 
 /* NOTE: Uncomment the following #define if you want to use the
  * given formula for calculating the AC conditioning parameter Kx

jccolor.c

@@ -93,13 +93,13 @@ typedef my_color_converter *my_cconvert_ptr;
 #undef RGB_BLUE
 #undef RGB_PIXELSIZE
 
-#define RGB_RED EXT_RGB_RED
-#define RGB_GREEN EXT_RGB_GREEN
-#define RGB_BLUE EXT_RGB_BLUE
-#define RGB_PIXELSIZE EXT_RGB_PIXELSIZE
-#define rgb_ycc_convert_internal extrgb_ycc_convert_internal
-#define rgb_gray_convert_internal extrgb_gray_convert_internal
-#define rgb_rgb_convert_internal extrgb_rgb_convert_internal
+#define RGB_RED  EXT_RGB_RED
+#define RGB_GREEN  EXT_RGB_GREEN
+#define RGB_BLUE  EXT_RGB_BLUE
+#define RGB_PIXELSIZE  EXT_RGB_PIXELSIZE
+#define rgb_ycc_convert_internal  extrgb_ycc_convert_internal
+#define rgb_gray_convert_internal  extrgb_gray_convert_internal
+#define rgb_rgb_convert_internal  extrgb_rgb_convert_internal
 #include "jccolext.c"
 #undef RGB_RED
 #undef RGB_GREEN
@@ -109,13 +109,13 @@ typedef my_color_converter *my_cconvert_ptr;
 #undef rgb_gray_convert_internal
 #undef rgb_rgb_convert_internal
 
-#define RGB_RED EXT_RGBX_RED
-#define RGB_GREEN EXT_RGBX_GREEN
-#define RGB_BLUE EXT_RGBX_BLUE
-#define RGB_PIXELSIZE EXT_RGBX_PIXELSIZE
-#define rgb_ycc_convert_internal extrgbx_ycc_convert_internal
-#define rgb_gray_convert_internal extrgbx_gray_convert_internal
-#define rgb_rgb_convert_internal extrgbx_rgb_convert_internal
+#define RGB_RED  EXT_RGBX_RED
+#define RGB_GREEN  EXT_RGBX_GREEN
+#define RGB_BLUE  EXT_RGBX_BLUE
+#define RGB_PIXELSIZE  EXT_RGBX_PIXELSIZE
+#define rgb_ycc_convert_internal  extrgbx_ycc_convert_internal
+#define rgb_gray_convert_internal  extrgbx_gray_convert_internal
+#define rgb_rgb_convert_internal  extrgbx_rgb_convert_internal
 #include "jccolext.c"
 #undef RGB_RED
 #undef RGB_GREEN
@@ -125,13 +125,13 @@ typedef my_color_converter *my_cconvert_ptr;
 #undef rgb_gray_convert_internal
 #undef rgb_rgb_convert_internal
 
-#define RGB_RED EXT_BGR_RED
-#define RGB_GREEN EXT_BGR_GREEN
-#define RGB_BLUE EXT_BGR_BLUE
-#define RGB_PIXELSIZE EXT_BGR_PIXELSIZE
-#define rgb_ycc_convert_internal extbgr_ycc_convert_internal
-#define rgb_gray_convert_internal extbgr_gray_convert_internal
-#define rgb_rgb_convert_internal extbgr_rgb_convert_internal
+#define RGB_RED  EXT_BGR_RED
+#define RGB_GREEN  EXT_BGR_GREEN
+#define RGB_BLUE  EXT_BGR_BLUE
+#define RGB_PIXELSIZE  EXT_BGR_PIXELSIZE
+#define rgb_ycc_convert_internal  extbgr_ycc_convert_internal
+#define rgb_gray_convert_internal  extbgr_gray_convert_internal
+#define rgb_rgb_convert_internal  extbgr_rgb_convert_internal
 #include "jccolext.c"
 #undef RGB_RED
 #undef RGB_GREEN
@@ -141,13 +141,13 @@ typedef my_color_converter *my_cconvert_ptr;
 #undef rgb_gray_convert_internal
 #undef rgb_rgb_convert_internal
 
-#define RGB_RED EXT_BGRX_RED
-#define RGB_GREEN EXT_BGRX_GREEN
-#define RGB_BLUE EXT_BGRX_BLUE
-#define RGB_PIXELSIZE EXT_BGRX_PIXELSIZE
-#define rgb_ycc_convert_internal extbgrx_ycc_convert_internal
-#define rgb_gray_convert_internal extbgrx_gray_convert_internal
-#define rgb_rgb_convert_internal extbgrx_rgb_convert_internal
+#define RGB_RED  EXT_BGRX_RED
+#define RGB_GREEN  EXT_BGRX_GREEN
+#define RGB_BLUE  EXT_BGRX_BLUE
+#define RGB_PIXELSIZE  EXT_BGRX_PIXELSIZE
+#define rgb_ycc_convert_internal  extbgrx_ycc_convert_internal
+#define rgb_gray_convert_internal  extbgrx_gray_convert_internal
+#define rgb_rgb_convert_internal  extbgrx_rgb_convert_internal
 #include "jccolext.c"
 #undef RGB_RED
 #undef RGB_GREEN
@@ -157,13 +157,13 @@ typedef my_color_converter *my_cconvert_ptr;
 #undef rgb_gray_convert_internal
 #undef rgb_rgb_convert_internal
 
-#define RGB_RED EXT_XBGR_RED
-#define RGB_GREEN EXT_XBGR_GREEN
-#define RGB_BLUE EXT_XBGR_BLUE
-#define RGB_PIXELSIZE EXT_XBGR_PIXELSIZE
-#define rgb_ycc_convert_internal extxbgr_ycc_convert_internal
-#define rgb_gray_convert_internal extxbgr_gray_convert_internal
-#define rgb_rgb_convert_internal extxbgr_rgb_convert_internal
+#define RGB_RED  EXT_XBGR_RED
+#define RGB_GREEN  EXT_XBGR_GREEN
+#define RGB_BLUE  EXT_XBGR_BLUE
+#define RGB_PIXELSIZE  EXT_XBGR_PIXELSIZE
+#define rgb_ycc_convert_internal  extxbgr_ycc_convert_internal
+#define rgb_gray_convert_internal  extxbgr_gray_convert_internal
+#define rgb_rgb_convert_internal  extxbgr_rgb_convert_internal
 #include "jccolext.c"
 #undef RGB_RED
 #undef RGB_GREEN
@@ -173,13 +173,13 @@ typedef my_color_converter *my_cconvert_ptr;
 #undef rgb_gray_convert_internal
 #undef rgb_rgb_convert_internal
 
-#define RGB_RED EXT_XRGB_RED
-#define RGB_GREEN EXT_XRGB_GREEN
-#define RGB_BLUE EXT_XRGB_BLUE
-#define RGB_PIXELSIZE EXT_XRGB_PIXELSIZE
-#define rgb_ycc_convert_internal extxrgb_ycc_convert_internal
-#define rgb_gray_convert_internal extxrgb_gray_convert_internal
-#define rgb_rgb_convert_internal extxrgb_rgb_convert_internal
+#define RGB_RED  EXT_XRGB_RED
+#define RGB_GREEN  EXT_XRGB_GREEN
+#define RGB_BLUE  EXT_XRGB_BLUE
+#define RGB_PIXELSIZE  EXT_XRGB_PIXELSIZE
+#define rgb_ycc_convert_internal  extxrgb_ycc_convert_internal
+#define rgb_gray_convert_internal  extxrgb_gray_convert_internal
+#define rgb_rgb_convert_internal  extxrgb_rgb_convert_internal
 #include "jccolext.c"
 #undef RGB_RED
 #undef RGB_GREEN

jcdctmgr.c

@@ -283,7 +283,7 @@ start_pass_fdctmgr(j_compress_ptr cinfo)
          *   scalefactor[k] = cos(k*PI/16) * sqrt(2)    for k=1..7
          * We apply a further scale factor of 8.
          */
-#define CONST_BITS 14
+#define CONST_BITS  14
         static const INT16 aanscales[DCTSIZE2] = {
           /* precomputed values scaled up by 14 bits */
           16384, 22725, 21407, 19266, 16384, 12873,  8867,  4520,

jchuff.c

@@ -47,12 +47,12 @@
 #endif
 
 #ifdef USE_CLZ_INTRINSIC
-#define JPEG_NBITS_NONZERO(x) (32 - __builtin_clz(x))
-#define JPEG_NBITS(x) (x ? JPEG_NBITS_NONZERO(x) : 0)
+#define JPEG_NBITS_NONZERO(x)  (32 - __builtin_clz(x))
+#define JPEG_NBITS(x)          (x ? JPEG_NBITS_NONZERO(x) : 0)
 #else
 #include "jpeg_nbits_table.h"
-#define JPEG_NBITS(x) (jpeg_nbits_table[x])
-#define JPEG_NBITS_NONZERO(x) JPEG_NBITS(x)
+#define JPEG_NBITS(x)          (jpeg_nbits_table[x])
+#define JPEG_NBITS_NONZERO(x)  JPEG_NBITS(x)
 #endif
 
 
@@ -425,7 +425,7 @@ dump_buffer(working_state *state)
  * scanning order-- 1, 8, 16, etc.), then this will produce an encoded block
  * larger than 200 bytes.
  */
-#define BUFSIZE (DCTSIZE2 * 4)
+#define BUFSIZE  (DCTSIZE2 * 4)
 
 #define LOAD_BUFFER() { \
   if (state->free_in_buffer < BUFSIZE) { \
@@ -882,7 +882,7 @@ encode_mcu_gather(j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 GLOBAL(void)
 jpeg_gen_optimal_table(j_compress_ptr cinfo, JHUFF_TBL *htbl, long freq[])
 {
-#define MAX_CLEN 32             /* assumed maximum initial code length */
+#define MAX_CLEN  32            /* assumed maximum initial code length */
   UINT8 bits[MAX_CLEN + 1];     /* bits[k] = # of symbols with code length k */
   int codesize[257];            /* codesize[k] = code length of symbol k */
   int others[257];              /* next symbol in current branch of tree */

jchuff.h

@@ -20,9 +20,9 @@
  */
 
 #if BITS_IN_JSAMPLE == 8
-#define MAX_COEF_BITS 10
+#define MAX_COEF_BITS  10
 #else
-#define MAX_COEF_BITS 14
+#define MAX_COEF_BITS  14
 #endif
 
 /* Derived data constructed for each Huffman table */

jcmaster.c

@@ -242,9 +242,9 @@ validate_script(j_compress_ptr cinfo)
        * which might cause problems for some decoders.
        */
 #if BITS_IN_JSAMPLE == 8
-#define MAX_AH_AL 10
+#define MAX_AH_AL  10
 #else
-#define MAX_AH_AL 13
+#define MAX_AH_AL  13
 #endif
       if (Ss < 0 || Ss >= DCTSIZE2 || Se < Ss || Se >= DCTSIZE2 ||
           Ah < 0 || Ah > MAX_AH_AL || Al < 0 || Al > MAX_AH_AL)

jconfig.h.in

@@ -1,13 +1,13 @@
 /* Version ID for the JPEG library.
  * Might be useful for tests like "#if JPEG_LIB_VERSION >= 60".
  */
-#define JPEG_LIB_VERSION @JPEG_LIB_VERSION@
+#define JPEG_LIB_VERSION  @JPEG_LIB_VERSION@
 
 /* libjpeg-turbo version */
-#define LIBJPEG_TURBO_VERSION @VERSION@
+#define LIBJPEG_TURBO_VERSION  @VERSION@
 
 /* libjpeg-turbo version in integer form */
-#define LIBJPEG_TURBO_VERSION_NUMBER @LIBJPEG_TURBO_VERSION_NUMBER@
+#define LIBJPEG_TURBO_VERSION_NUMBER  @LIBJPEG_TURBO_VERSION_NUMBER@
 
 /* Support arithmetic encoding */
 #cmakedefine C_ARITH_CODING_SUPPORTED

jconfigint.h.in

@@ -1,21 +1,21 @@
 /* libjpeg-turbo build number */
-#define BUILD "@BUILD@"
+#define BUILD  "@BUILD@"
 
 /* Compiler's inline keyword */
 #undef inline
 
 /* How to obtain function inlining. */
-#define INLINE @INLINE@
+#define INLINE  @INLINE@
 
 /* Define to the full name of this package. */
-#define PACKAGE_NAME "@CMAKE_PROJECT_NAME@"
+#define PACKAGE_NAME  "@CMAKE_PROJECT_NAME@"
 
 /* Version number of package */
-#define VERSION "@VERSION@"
+#define VERSION  "@VERSION@"
 
 #ifndef _WIN32
 
 /* The size of `size_t', as computed by sizeof. */
-#define SIZEOF_SIZE_T @SIZE_T@
+#define SIZEOF_SIZE_T  @SIZE_T@
 
 #endif

jcphuff.c

@@ -45,12 +45,12 @@
 #endif
 
 #ifdef USE_CLZ_INTRINSIC
-#define JPEG_NBITS_NONZERO(x) (32 - __builtin_clz(x))
-#define JPEG_NBITS(x) (x ? JPEG_NBITS_NONZERO(x) : 0)
+#define JPEG_NBITS_NONZERO(x)  (32 - __builtin_clz(x))
+#define JPEG_NBITS(x)          (x ? JPEG_NBITS_NONZERO(x) : 0)
 #else
 #include "jpeg_nbits_table.h"
-#define JPEG_NBITS(x) (jpeg_nbits_table[x])
-#define JPEG_NBITS_NONZERO(x) JPEG_NBITS(x)
+#define JPEG_NBITS(x)          (jpeg_nbits_table[x])
+#define JPEG_NBITS_NONZERO(x)  JPEG_NBITS(x)
 #endif
 
 

jcstest.c

@@ -35,10 +35,10 @@
 #include <setjmp.h>
 
 #ifndef JCS_EXTENSIONS
-#define JCS_EXT_RGB 6
+#define JCS_EXT_RGB  6
 #endif
 #if !defined(JCS_EXTENSIONS) || !defined(JCS_ALPHA_EXTENSIONS)
-#define JCS_EXT_RGBA 12
+#define JCS_EXT_RGBA  12
 #endif
 
 static char lasterror[JMSG_LENGTH_MAX] = "No error";

jdarith.c

@@ -21,7 +21,7 @@
 #include "jpeglib.h"
 
 
-#define NEG_1 ((unsigned int)-1)
+#define NEG_1  ((unsigned int)-1)
 
 
 /* Expanded entropy decoder object for arithmetic decoding. */
@@ -63,8 +63,8 @@ typedef arith_entropy_decoder *arith_entropy_ptr;
  * in the lower bits (mask 0x7F).
  */
 
-#define DC_STAT_BINS 64
-#define AC_STAT_BINS 256
+#define DC_STAT_BINS  64
+#define AC_STAT_BINS  256
 
 
 LOCAL(int)