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

rdrle.c

 /*
  * rdrle.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1996, Thomas G. Lane.
- * 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 read input images in Utah RLE format.
  * The Utah Raster Toolkit library is required (version 3.1 or later).
  *
  * These routines may need modification for non-Unix environments or
  * specialized applications.  As they stand, they assume input from
  * an ordinary stdio stream.  They further assume that reading begins
  * at the start of the file; start_input may need work if the
  * user interface has already read some data (e.g., to determine that
  * the file is indeed RLE format).
  *
  * Based on code contributed by Mike Lijewski,
  * with updates from Robert Hutchinson.
  */
 
-#include "cdjpeg.h"             /* Common decls for cjpeg/djpeg applications */
+#include "cdjpeg.h"             /* Common decls for cjpeg/djpeg applications */
 
 #ifdef RLE_SUPPORTED
 
 /* rle.h is provided by the Utah Raster Toolkit. */
 
 #include <rle.h>
 
 /*
  * We assume that JSAMPLE has the same representation as rle_pixel,
  * to wit, "unsigned char".  Hence we can't cope with 12- or 16-bit samples.
  */
 
 #if BITS_IN_JSAMPLE != 8
   Sorry, this code only copes with 8-bit JSAMPLEs. /* deliberate syntax err */
 #endif
 
 /*
  * We support the following types of RLE files:
- *   
+ *
  *   GRAYSCALE   - 8 bits, no colormap
  *   MAPPEDGRAY  - 8 bits, 1 channel colomap
  *   PSEUDOCOLOR - 8 bits, 3 channel colormap
  *   TRUECOLOR   - 24 bits, 3 channel colormap
  *   DIRECTCOLOR - 24 bits, no colormap
  *
  * For now, we ignore any alpha channel in the image.
  */
 
 typedef enum
   { GRAYSCALE, MAPPEDGRAY, PSEUDOCOLOR, TRUECOLOR, DIRECTCOLOR } rle_kind;
 
 
 /*
  * Since RLE stores scanlines bottom-to-top, we have to invert the image
  * to conform to JPEG's top-to-bottom order.  To do this, we read the
  * incoming image into a virtual array on the first get_pixel_rows call,
  * then fetch the required row from the virtual array on subsequent calls.
  */
 
-typedef struct _rle_source_struct * rle_source_ptr;
+typedef struct _rle_source_struct *rle_source_ptr;
 
 typedef struct _rle_source_struct {
   struct cjpeg_source_struct pub; /* public fields */
 
   rle_kind visual;              /* actual type of input file */
   jvirt_sarray_ptr image;       /* virtual array to hold the image */
-  JDIMENSION row;               /* current row # in the virtual array */
+  JDIMENSION row;               /* current row # in the virtual array */
   rle_hdr header;               /* Input file information */
-  rle_pixel** rle_row;          /* holds a row returned by rle_getrow() */
+  rle_pixel **rle_row;          /* holds a row returned by rle_getrow() */
 
 } rle_source_struct;
 
 
 /*
  * Read the file header; return image size and component count.
  */
 
 METHODDEF(void)
 start_input_rle (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
@@ skipping 22 matching lines @@
     break;
   case RLE_EOF:
     ERREXIT(cinfo, JERR_RLE_EOF);
     break;
   default:
     ERREXIT(cinfo, JERR_RLE_BADERROR);
     break;
   }
 
   /* Figure out what we have, set private vars and return values accordingly */
-  
+
   width  = source->header.xmax - source->header.xmin + 1;
   height = source->header.ymax - source->header.ymin + 1;
-  source->header.xmin = 0;              /* realign horizontally */
+  source->header.xmin = 0;              /* realign horizontally */
   source->header.xmax = width-1;
 
   cinfo->image_width      = width;
   cinfo->image_height     = height;
   cinfo->data_precision   = 8;  /* we can only handle 8 bit data */
 
   if (source->header.ncolors == 1 && source->header.ncmap == 0) {
     source->visual     = GRAYSCALE;
     TRACEMS2(cinfo, 1, JTRC_RLE_GRAY, width, height);
   } else if (source->header.ncolors == 1 && source->header.ncmap == 1) {
     source->visual     = MAPPEDGRAY;
     TRACEMS3(cinfo, 1, JTRC_RLE_MAPGRAY, width, height,
              1 << source->header.cmaplen);
   } else if (source->header.ncolors == 1 && source->header.ncmap == 3) {
     source->visual     = PSEUDOCOLOR;
     TRACEMS3(cinfo, 1, JTRC_RLE_MAPPED, width, height,
-             1 << source->header.cmaplen);
+             1 << source->header.cmaplen);
   } else if (source->header.ncolors == 3 && source->header.ncmap == 3) {
     source->visual     = TRUECOLOR;
     TRACEMS3(cinfo, 1, JTRC_RLE_FULLMAP, width, height,
-             1 << source->header.cmaplen);
+             1 << source->header.cmaplen);
   } else if (source->header.ncolors == 3 && source->header.ncmap == 0) {
     source->visual     = DIRECTCOLOR;
     TRACEMS2(cinfo, 1, JTRC_RLE, width, height);
   } else
     ERREXIT(cinfo, JERR_RLE_UNSUPPORTED);
-  
+
   if (source->visual == GRAYSCALE || source->visual == MAPPEDGRAY) {
     cinfo->in_color_space   = JCS_GRAYSCALE;
     cinfo->input_components = 1;
   } else {
     cinfo->in_color_space   = JCS_RGB;
     cinfo->input_components = 3;
   }
 
   /*
    * A place to hold each scanline while it's converted.
@@ skipping 51 matching lines @@
 {
   rle_source_ptr source = (rle_source_ptr) sinfo;
   JSAMPROW src_row, dest_row;
   JDIMENSION col;
   rle_map *colormap;
   int val;
 
   colormap = source->header.cmap;
   dest_row = source->pub.buffer[0];
   source->row--;
-  src_row = * (*cinfo->mem->access_virt_sarray)
+  src_row = *(*cinfo->mem->access_virt_sarray)
     ((j_common_ptr) cinfo, source->image, source->row, (JDIMENSION) 1, FALSE);
 
   for (col = cinfo->image_width; col > 0; col--) {
     val = GETJSAMPLE(*src_row++);
     *dest_row++ = (JSAMPLE) (colormap[val      ] >> 8);
     *dest_row++ = (JSAMPLE) (colormap[val + 256] >> 8);
     *dest_row++ = (JSAMPLE) (colormap[val + 512] >> 8);
   }
 
   return 1;
@@ skipping 20 matching lines @@
   rle_map *colormap;
   char channel;
 #ifdef PROGRESS_REPORT
   cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress;
 #endif
 
   colormap = source->header.cmap;
   rle_row = source->rle_row;
 
   /* Read the RLE data into our virtual array.
-   * We assume here that (a) rle_pixel is represented the same as JSAMPLE,
-   * and (b) we are not on a machine where FAR pointers differ from regular.
+   * We assume here that rle_pixel is represented the same as JSAMPLE.
    */
   RLE_CLR_BIT(source->header, RLE_ALPHA); /* don't read the alpha channel */
 
 #ifdef PROGRESS_REPORT
   if (progress != NULL) {
     progress->pub.pass_limit = cinfo->image_height;
     progress->pub.pass_counter = 0;
     (*progress->pub.progress_monitor) ((j_common_ptr) cinfo);
   }
 #endif
@@ skipping 11 matching lines @@
         progress->pub.pass_counter++;
         (*progress->pub.progress_monitor) ((j_common_ptr) cinfo);
       }
 #endif
     }
     break;
 
   case MAPPEDGRAY:
   case TRUECOLOR:
     for (row = 0; row < cinfo->image_height; row++) {
-      scanline = * (*cinfo->mem->access_virt_sarray)
+      scanline = *(*cinfo->mem->access_virt_sarray)
         ((j_common_ptr) cinfo, source->image, row, (JDIMENSION) 1, TRUE);
       rle_row = source->rle_row;
       rle_getrow(&source->header, rle_row);
 
       for (col = 0; col < cinfo->image_width; col++) {
         for (channel = 0; channel < source->header.ncolors; channel++) {
           *scanline++ = (JSAMPLE)
             (colormap[GETJSAMPLE(rle_row[channel][col]) + 256 * channel] >> 8);
         }
       }
 
 #ifdef PROGRESS_REPORT
       if (progress != NULL) {
         progress->pub.pass_counter++;
         (*progress->pub.progress_monitor) ((j_common_ptr) cinfo);
       }
 #endif
     }
     break;
 
   case DIRECTCOLOR:
     for (row = 0; row < cinfo->image_height; row++) {
-      scanline = * (*cinfo->mem->access_virt_sarray)
+      scanline = *(*cinfo->mem->access_virt_sarray)
         ((j_common_ptr) cinfo, source->image, row, (JDIMENSION) 1, TRUE);
       rle_getrow(&source->header, rle_row);
 
       red_ptr   = rle_row[0];
       green_ptr = rle_row[1];
       blue_ptr  = rle_row[2];
 
       for (col = cinfo->image_width; col > 0; col--) {
         *scanline++ = *red_ptr++;
         *scanline++ = *green_ptr++;
@@ skipping 17 matching lines @@
   /* Set up to call proper row-extraction routine in future */
   if (source->visual == PSEUDOCOLOR) {
     source->pub.buffer = source->rle_row;
     source->pub.get_pixel_rows = get_pseudocolor_row;
   } else {
     source->pub.get_pixel_rows = get_rle_row;
   }
   source->row = cinfo->image_height;
 
   /* And fetch the topmost (bottommost) row */
-  return (*source->pub.get_pixel_rows) (cinfo, sinfo);   
+  return (*source->pub.get_pixel_rows) (cinfo, sinfo);
 }
 
 
 /*
  * Finish up at the end of the file.
  */
 
 METHODDEF(void)
 finish_input_rle (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
 {
   /* no work */
 }
 
 
 /*
  * The module selection routine for RLE format input.
  */
 
 GLOBAL(cjpeg_source_ptr)
 jinit_read_rle (j_compress_ptr cinfo)
 {
   rle_source_ptr source;
 
   /* Create module interface object */
   source = (rle_source_ptr)
       (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
-                                  SIZEOF(rle_source_struct));
+                                  sizeof(rle_source_struct));
   /* Fill in method ptrs */
   source->pub.start_input = start_input_rle;
   source->pub.finish_input = finish_input_rle;
   source->pub.get_pixel_rows = load_image;
 
   return (cjpeg_source_ptr) source;
 }
 
 #endif /* RLE_SUPPORTED */