Update libjpeg_turbo to 1.4.90 from https://github.com/libjpeg-turbo/

wrppm.c

 /*
  * wrppm.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1996, Thomas G. Lane.
  * Modified 2009 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.
+ * It was modified by The libjpeg-turbo Project to include only code and
+ * information relevant to libjpeg-turbo.
+ * For conditions of distribution and use, see the accompanying README.ijg
+ * file.
  *
  * This file contains routines to write output images in PPM/PGM format.
  * The extended 2-byte-per-sample raw PPM/PGM formats are supported.
  * The PBMPLUS library is NOT required to compile this software
  * (but it is highly useful as a set of PPM image manipulation programs).
  *
  * These routines may need modification for non-Unix environments or
  * specialized applications.  As they stand, they assume output to
  * an ordinary stdio stream.
  */
 
-#include "cdjpeg.h"             /* Common decls for cjpeg/djpeg applications */
+#include "cdjpeg.h"             /* Common decls for cjpeg/djpeg applications */
+#include "wrppm.h"
 
 #ifdef PPM_SUPPORTED
 
 
 /*
  * For 12-bit JPEG data, we either downscale the values to 8 bits
  * (to write standard byte-per-sample PPM/PGM files), or output
  * nonstandard word-per-sample PPM/PGM files.  Downscaling is done
  * if PPM_NORAWWORD is defined (this can be done in the Makefile
  * or in jconfig.h).
  * (When the core library supports data precision reduction, a cleaner
  * implementation will be to ask for that instead.)
  */
 
 #if BITS_IN_JSAMPLE == 8
 #define PUTPPMSAMPLE(ptr,v)  *ptr++ = (char) (v)
 #define BYTESPERSAMPLE 1
 #define PPM_MAXVAL 255
 #else
 #ifdef PPM_NORAWWORD
 #define PUTPPMSAMPLE(ptr,v)  *ptr++ = (char) ((v) >> (BITS_IN_JSAMPLE-8))
 #define BYTESPERSAMPLE 1
 #define PPM_MAXVAL 255
 #else
 /* The word-per-sample format always puts the MSB first. */
-#define PUTPPMSAMPLE(ptr,v)                     \
-        { register int val_ = v;                \
-          *ptr++ = (char) ((val_ >> 8) & 0xFF); \
-          *ptr++ = (char) (val_ & 0xFF);        \
-        }
+#define PUTPPMSAMPLE(ptr,v)                     \
+        { register int val_ = v;                \
+          *ptr++ = (char) ((val_ >> 8) & 0xFF); \
+          *ptr++ = (char) (val_ & 0xFF);        \
+        }
 #define BYTESPERSAMPLE 2
 #define PPM_MAXVAL ((1<<BITS_IN_JSAMPLE)-1)
 #endif
 #endif
 
 
 /*
  * When JSAMPLE is the same size as char, we can just fwrite() the
- * decompressed data to the PPM or PGM file.  On PCs, in order to make this
- * work the output buffer must be allocated in near data space, because we are
- * assuming small-data memory model wherein fwrite() can't reach far memory.
- * If you need to process very wide images on a PC, you might have to compile
- * in large-memory model, or else replace fwrite() with a putc() loop ---
- * which will be much slower.
+ * decompressed data to the PPM or PGM file.
  */
 
 
-/* Private version of data destination object */
-
-typedef struct {
-  struct djpeg_dest_struct pub; /* public fields */
-
-  /* Usually these two pointers point to the same place: */
-  char *iobuffer;               /* fwrite's I/O buffer */
-  JSAMPROW pixrow;              /* decompressor output buffer */
-  size_t buffer_width;          /* width of I/O buffer */
-  JDIMENSION samples_per_row;   /* JSAMPLEs per output row */
-} ppm_dest_struct;
-
-typedef ppm_dest_struct * ppm_dest_ptr;
-
-
 /*
  * Write some pixel data.
  * In this module rows_supplied will always be 1.
  *
  * put_pixel_rows handles the "normal" 8-bit case where the decompressor
  * output buffer is physically the same as the fwrite buffer.
  */
 
 METHODDEF(void)
 put_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
-                JDIMENSION rows_supplied)
+                JDIMENSION rows_supplied)
 {
   ppm_dest_ptr dest = (ppm_dest_ptr) dinfo;
 
   (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
 }
 
 
 /*
  * This code is used when we have to copy the data and apply a pixel
  * format translation.  Typically this only happens in 12-bit mode.
  */
 
 METHODDEF(void)
 copy_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
-                 JDIMENSION rows_supplied)
+                 JDIMENSION rows_supplied)
 {
   ppm_dest_ptr dest = (ppm_dest_ptr) dinfo;
-  register char * bufferptr;
+  register char *bufferptr;
   register JSAMPROW ptr;
   register JDIMENSION col;
 
   ptr = dest->pub.buffer[0];
   bufferptr = dest->iobuffer;
   for (col = dest->samples_per_row; col > 0; col--) {
     PUTPPMSAMPLE(bufferptr, GETJSAMPLE(*ptr++));
   }
   (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
 }
 
 
 /*
  * Write some pixel data when color quantization is in effect.
  * We have to demap the color index values to straight data.
  */
 
 METHODDEF(void)
 put_demapped_rgb (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
-                  JDIMENSION rows_supplied)
+                  JDIMENSION rows_supplied)
 {
   ppm_dest_ptr dest = (ppm_dest_ptr) dinfo;
-  register char * bufferptr;
+  register char *bufferptr;
   register int pixval;
   register JSAMPROW ptr;
   register JSAMPROW color_map0 = cinfo->colormap[0];
   register JSAMPROW color_map1 = cinfo->colormap[1];
   register JSAMPROW color_map2 = cinfo->colormap[2];
   register JDIMENSION col;
 
   ptr = dest->pub.buffer[0];
   bufferptr = dest->iobuffer;
   for (col = cinfo->output_width; col > 0; col--) {
     pixval = GETJSAMPLE(*ptr++);
     PUTPPMSAMPLE(bufferptr, GETJSAMPLE(color_map0[pixval]));
     PUTPPMSAMPLE(bufferptr, GETJSAMPLE(color_map1[pixval]));
     PUTPPMSAMPLE(bufferptr, GETJSAMPLE(color_map2[pixval]));
   }
   (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
 }
 
 
 METHODDEF(void)
 put_demapped_gray (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
-                   JDIMENSION rows_supplied)
+                   JDIMENSION rows_supplied)
 {
   ppm_dest_ptr dest = (ppm_dest_ptr) dinfo;
-  register char * bufferptr;
+  register char *bufferptr;
   register JSAMPROW ptr;
   register JSAMPROW color_map = cinfo->colormap[0];
   register JDIMENSION col;
 
   ptr = dest->pub.buffer[0];
   bufferptr = dest->iobuffer;
   for (col = cinfo->output_width; col > 0; col--) {
     PUTPPMSAMPLE(bufferptr, GETJSAMPLE(color_map[GETJSAMPLE(*ptr++)]));
   }
   (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
 }
 
 
 /*
  * Startup: write the file header.
  */
 
 METHODDEF(void)
 start_output_ppm (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo)
 {
   ppm_dest_ptr dest = (ppm_dest_ptr) dinfo;
 
   /* Emit file header */
   switch (cinfo->out_color_space) {
   case JCS_GRAYSCALE:
     /* emit header for raw PGM format */
     fprintf(dest->pub.output_file, "P5\n%ld %ld\n%d\n",
-            (long) cinfo->output_width, (long) cinfo->output_height,
-            PPM_MAXVAL);
+            (long) cinfo->output_width, (long) cinfo->output_height,
+            PPM_MAXVAL);
     break;
   case JCS_RGB:
     /* emit header for raw PPM format */
     fprintf(dest->pub.output_file, "P6\n%ld %ld\n%d\n",
-            (long) cinfo->output_width, (long) cinfo->output_height,
-            PPM_MAXVAL);
+            (long) cinfo->output_width, (long) cinfo->output_height,
+            PPM_MAXVAL);
     break;
   default:
     ERREXIT(cinfo, JERR_PPM_COLORSPACE);
   }
 }
 
 
 /*
  * Finish up at the end of the file.
  */
@@ skipping 13 matching lines @@
  */
 
 GLOBAL(djpeg_dest_ptr)
 jinit_write_ppm (j_decompress_ptr cinfo)
 {
   ppm_dest_ptr dest;
 
   /* Create module interface object, fill in method pointers */
   dest = (ppm_dest_ptr)
       (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
-                                  SIZEOF(ppm_dest_struct));
+                                  sizeof(ppm_dest_struct));
   dest->pub.start_output = start_output_ppm;
   dest->pub.finish_output = finish_output_ppm;
 
   /* Calculate output image dimensions so we can allocate space */
   jpeg_calc_output_dimensions(cinfo);
 
-  /* Create physical I/O buffer.  Note we make this near on a PC. */
+  /* Create physical I/O buffer */
   dest->samples_per_row = cinfo->output_width * cinfo->out_color_components;
-  dest->buffer_width = dest->samples_per_row * (BYTESPERSAMPLE * SIZEOF(char));
+  dest->buffer_width = dest->samples_per_row * (BYTESPERSAMPLE * sizeof(char));
   dest->iobuffer = (char *) (*cinfo->mem->alloc_small)
     ((j_common_ptr) cinfo, JPOOL_IMAGE, dest->buffer_width);
 
   if (cinfo->quantize_colors || BITS_IN_JSAMPLE != 8 ||
-      SIZEOF(JSAMPLE) != SIZEOF(char)) {
+      sizeof(JSAMPLE) != sizeof(char)) {
     /* When quantizing, we need an output buffer for colormap indexes
      * that's separate from the physical I/O buffer.  We also need a
      * separate buffer if pixel format translation must take place.
      */
     dest->pub.buffer = (*cinfo->mem->alloc_sarray)
       ((j_common_ptr) cinfo, JPOOL_IMAGE,
        cinfo->output_width * cinfo->output_components, (JDIMENSION) 1);
     dest->pub.buffer_height = 1;
     if (! cinfo->quantize_colors)
       dest->pub.put_pixel_rows = copy_pixel_rows;
     else if (cinfo->out_color_space == JCS_GRAYSCALE)
       dest->pub.put_pixel_rows = put_demapped_gray;
     else
       dest->pub.put_pixel_rows = put_demapped_rgb;
   } else {
     /* We will fwrite() directly from decompressor output buffer. */
     /* Synthesize a JSAMPARRAY pointer structure */
-    /* Cast here implies near->far pointer conversion on PCs */
     dest->pixrow = (JSAMPROW) dest->iobuffer;
     dest->pub.buffer = & dest->pixrow;
     dest->pub.buffer_height = 1;
     dest->pub.put_pixel_rows = put_pixel_rows;
   }
 
   return (djpeg_dest_ptr) dest;
 }
 
 #endif /* PPM_SUPPORTED */