Convert tabs to spaces in the libjpeg code and the SIMD code (TurboJPEG retains the use of tabs for historical reasons.  They were annoying in the libjpeg code primarily because they were not consistently used and because they were used to format as well as indent the code.  In the case of TurboJPEG, tabs are used just to indent the code, so even if the editor assumes a different tab width, the code will still be readable.)


git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1278 632fc199-4ca6-4c93-a231-07263d6284db
diff --git a/jmemmgr.c b/jmemmgr.c
index cf32524..15b6325 100644
--- a/jmemmgr.c
+++ b/jmemmgr.c
@@ -25,13 +25,13 @@
  */
 
 #define JPEG_INTERNALS
-#define AM_MEMORY_MANAGER	/* we define jvirt_Xarray_control structs */
+#define AM_MEMORY_MANAGER       /* we define jvirt_Xarray_control structs */
 #include "jinclude.h"
 #include "jpeglib.h"
-#include "jmemsys.h"		/* import the system-dependent declarations */
+#include "jmemsys.h"            /* import the system-dependent declarations */
 
 #ifndef NO_GETENV
-#ifndef HAVE_STDLIB_H		/* <stdlib.h> should declare getenv() */
+#ifndef HAVE_STDLIB_H           /* <stdlib.h> should declare getenv() */
 extern char * getenv JPP((const char * name));
 #endif
 #endif
@@ -78,7 +78,7 @@
  * such a compiler.
  */
 
-#ifndef ALIGN_SIZE		/* so can override from jconfig.h */
+#ifndef ALIGN_SIZE              /* so can override from jconfig.h */
 #ifndef WITH_SIMD
 #define ALIGN_SIZE  SIZEOF(double)
 #else
@@ -98,17 +98,17 @@
 typedef struct small_pool_struct * small_pool_ptr;
 
 typedef struct small_pool_struct {
-  small_pool_ptr next;	/* next in list of pools */
-  size_t bytes_used;		/* how many bytes already used within pool */
-  size_t bytes_left;		/* bytes still available in this pool */
+  small_pool_ptr next;  /* next in list of pools */
+  size_t bytes_used;            /* how many bytes already used within pool */
+  size_t bytes_left;            /* bytes still available in this pool */
 } small_pool_hdr;
 
 typedef struct large_pool_struct FAR * large_pool_ptr;
 
 typedef struct large_pool_struct {
-  large_pool_ptr next;	/* next in list of pools */
-  size_t bytes_used;		/* how many bytes already used within pool */
-  size_t bytes_left;		/* bytes still available in this pool */
+  large_pool_ptr next;  /* next in list of pools */
+  size_t bytes_used;            /* how many bytes already used within pool */
+  size_t bytes_left;            /* bytes still available in this pool */
 } large_pool_hdr;
 
 /*
@@ -116,7 +116,7 @@
  */
 
 typedef struct {
-  struct jpeg_memory_mgr pub;	/* public fields */
+  struct jpeg_memory_mgr pub;   /* public fields */
 
   /* Each pool identifier (lifetime class) names a linked list of pools. */
   small_pool_ptr small_list[JPOOL_NUMPOOLS];
@@ -136,7 +136,7 @@
   /* alloc_sarray and alloc_barray set this value for use by virtual
    * array routines.
    */
-  JDIMENSION last_rowsperchunk;	/* from most recent alloc_sarray/barray */
+  JDIMENSION last_rowsperchunk; /* from most recent alloc_sarray/barray */
 } my_memory_mgr;
 
 typedef my_memory_mgr * my_mem_ptr;
@@ -150,39 +150,39 @@
  */
 
 struct jvirt_sarray_control {
-  JSAMPARRAY mem_buffer;	/* => the in-memory buffer */
-  JDIMENSION rows_in_array;	/* total virtual array height */
-  JDIMENSION samplesperrow;	/* width of array (and of memory buffer) */
-  JDIMENSION maxaccess;		/* max rows accessed by access_virt_sarray */
-  JDIMENSION rows_in_mem;	/* height of memory buffer */
-  JDIMENSION rowsperchunk;	/* allocation chunk size in mem_buffer */
-  JDIMENSION cur_start_row;	/* first logical row # in the buffer */
-  JDIMENSION first_undef_row;	/* row # of first uninitialized row */
-  boolean pre_zero;		/* pre-zero mode requested? */
-  boolean dirty;		/* do current buffer contents need written? */
-  boolean b_s_open;		/* is backing-store data valid? */
-  jvirt_sarray_ptr next;	/* link to next virtual sarray control block */
-  backing_store_info b_s_info;	/* System-dependent control info */
+  JSAMPARRAY mem_buffer;        /* => the in-memory buffer */
+  JDIMENSION rows_in_array;     /* total virtual array height */
+  JDIMENSION samplesperrow;     /* width of array (and of memory buffer) */
+  JDIMENSION maxaccess;         /* max rows accessed by access_virt_sarray */
+  JDIMENSION rows_in_mem;       /* height of memory buffer */
+  JDIMENSION rowsperchunk;      /* allocation chunk size in mem_buffer */
+  JDIMENSION cur_start_row;     /* first logical row # in the buffer */
+  JDIMENSION first_undef_row;   /* row # of first uninitialized row */
+  boolean pre_zero;             /* pre-zero mode requested? */
+  boolean dirty;                /* do current buffer contents need written? */
+  boolean b_s_open;             /* is backing-store data valid? */
+  jvirt_sarray_ptr next;        /* link to next virtual sarray control block */
+  backing_store_info b_s_info;  /* System-dependent control info */
 };
 
 struct jvirt_barray_control {
-  JBLOCKARRAY mem_buffer;	/* => the in-memory buffer */
-  JDIMENSION rows_in_array;	/* total virtual array height */
-  JDIMENSION blocksperrow;	/* width of array (and of memory buffer) */
-  JDIMENSION maxaccess;		/* max rows accessed by access_virt_barray */
-  JDIMENSION rows_in_mem;	/* height of memory buffer */
-  JDIMENSION rowsperchunk;	/* allocation chunk size in mem_buffer */
-  JDIMENSION cur_start_row;	/* first logical row # in the buffer */
-  JDIMENSION first_undef_row;	/* row # of first uninitialized row */
-  boolean pre_zero;		/* pre-zero mode requested? */
-  boolean dirty;		/* do current buffer contents need written? */
-  boolean b_s_open;		/* is backing-store data valid? */
-  jvirt_barray_ptr next;	/* link to next virtual barray control block */
-  backing_store_info b_s_info;	/* System-dependent control info */
+  JBLOCKARRAY mem_buffer;       /* => the in-memory buffer */
+  JDIMENSION rows_in_array;     /* total virtual array height */
+  JDIMENSION blocksperrow;      /* width of array (and of memory buffer) */
+  JDIMENSION maxaccess;         /* max rows accessed by access_virt_barray */
+  JDIMENSION rows_in_mem;       /* height of memory buffer */
+  JDIMENSION rowsperchunk;      /* allocation chunk size in mem_buffer */
+  JDIMENSION cur_start_row;     /* first logical row # in the buffer */
+  JDIMENSION first_undef_row;   /* row # of first uninitialized row */
+  boolean pre_zero;             /* pre-zero mode requested? */
+  boolean dirty;                /* do current buffer contents need written? */
+  boolean b_s_open;             /* is backing-store data valid? */
+  jvirt_barray_ptr next;        /* link to next virtual barray control block */
+  backing_store_info b_s_info;  /* System-dependent control info */
 };
 
 
-#ifdef MEM_STATS		/* optional extra stuff for statistics */
+#ifdef MEM_STATS                /* optional extra stuff for statistics */
 
 LOCAL(void)
 print_mem_stats (j_common_ptr cinfo, int pool_id)
@@ -196,19 +196,19 @@
    * This is helpful because message parm array can't handle longs.
    */
   fprintf(stderr, "Freeing pool %d, total space = %ld\n",
-	  pool_id, mem->total_space_allocated);
+          pool_id, mem->total_space_allocated);
 
   for (lhdr_ptr = mem->large_list[pool_id]; lhdr_ptr != NULL;
        lhdr_ptr = lhdr_ptr->next) {
     fprintf(stderr, "  Large chunk used %ld\n",
-	    (long) lhdr_ptr->bytes_used);
+            (long) lhdr_ptr->bytes_used);
   }
 
   for (shdr_ptr = mem->small_list[pool_id]; shdr_ptr != NULL;
        shdr_ptr = shdr_ptr->next) {
     fprintf(stderr, "  Small chunk used %ld free %ld\n",
-	    (long) shdr_ptr->bytes_used,
-	    (long) shdr_ptr->bytes_left);
+            (long) shdr_ptr->bytes_used,
+            (long) shdr_ptr->bytes_left);
   }
 }
 
@@ -221,7 +221,7 @@
 /* If we compiled MEM_STATS support, report alloc requests before dying */
 {
 #ifdef MEM_STATS
-  cinfo->err->trace_level = 2;	/* force self_destruct to report stats */
+  cinfo->err->trace_level = 2;  /* force self_destruct to report stats */
 #endif
   ERREXIT1(cinfo, JERR_OUT_OF_MEMORY, which);
 }
@@ -244,19 +244,19 @@
  * adjustment.
  */
 
-static const size_t first_pool_slop[JPOOL_NUMPOOLS] = 
+static const size_t first_pool_slop[JPOOL_NUMPOOLS] =
 {
-	1600,			/* first PERMANENT pool */
-	16000			/* first IMAGE pool */
+        1600,                   /* first PERMANENT pool */
+        16000                   /* first IMAGE pool */
 };
 
-static const size_t extra_pool_slop[JPOOL_NUMPOOLS] = 
+static const size_t extra_pool_slop[JPOOL_NUMPOOLS] =
 {
-	0,			/* additional PERMANENT pools */
-	5000			/* additional IMAGE pools */
+        0,                      /* additional PERMANENT pools */
+        5000                    /* additional IMAGE pools */
 };
 
-#define MIN_SLOP  50		/* greater than 0 to avoid futile looping */
+#define MIN_SLOP  50            /* greater than 0 to avoid futile looping */
 
 
 METHODDEF(void *)
@@ -278,16 +278,16 @@
 
   /* Check for unsatisfiable request (do now to ensure no overflow below) */
   if ((SIZEOF(small_pool_hdr) + sizeofobject + ALIGN_SIZE - 1) > MAX_ALLOC_CHUNK)
-    out_of_memory(cinfo, 1);	/* request exceeds malloc's ability */
+    out_of_memory(cinfo, 1);    /* request exceeds malloc's ability */
 
   /* See if space is available in any existing pool */
   if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS)
-    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id);	/* safety check */
+    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */
   prev_hdr_ptr = NULL;
   hdr_ptr = mem->small_list[pool_id];
   while (hdr_ptr != NULL) {
     if (hdr_ptr->bytes_left >= sizeofobject)
-      break;			/* found pool with enough space */
+      break;                    /* found pool with enough space */
     prev_hdr_ptr = hdr_ptr;
     hdr_ptr = hdr_ptr->next;
   }
@@ -296,7 +296,7 @@
   if (hdr_ptr == NULL) {
     /* min_request is what we need now, slop is what will be leftover */
     min_request = SIZEOF(small_pool_hdr) + sizeofobject + ALIGN_SIZE - 1;
-    if (prev_hdr_ptr == NULL)	/* first pool in class? */
+    if (prev_hdr_ptr == NULL)   /* first pool in class? */
       slop = first_pool_slop[pool_id];
     else
       slop = extra_pool_slop[pool_id];
@@ -307,17 +307,17 @@
     for (;;) {
       hdr_ptr = (small_pool_ptr) jpeg_get_small(cinfo, min_request + slop);
       if (hdr_ptr != NULL)
-	break;
+        break;
       slop /= 2;
-      if (slop < MIN_SLOP)	/* give up when it gets real small */
-	out_of_memory(cinfo, 2); /* jpeg_get_small failed */
+      if (slop < MIN_SLOP)      /* give up when it gets real small */
+        out_of_memory(cinfo, 2); /* jpeg_get_small failed */
     }
     mem->total_space_allocated += min_request + slop;
     /* Success, initialize the new pool header and add to end of list */
     hdr_ptr->next = NULL;
     hdr_ptr->bytes_used = 0;
     hdr_ptr->bytes_left = sizeofobject + slop;
-    if (prev_hdr_ptr == NULL)	/* first pool in class? */
+    if (prev_hdr_ptr == NULL)   /* first pool in class? */
       mem->small_list[pool_id] = hdr_ptr;
     else
       prev_hdr_ptr->next = hdr_ptr;
@@ -367,17 +367,17 @@
 
   /* Check for unsatisfiable request (do now to ensure no overflow below) */
   if ((SIZEOF(large_pool_hdr) + sizeofobject + ALIGN_SIZE - 1) > MAX_ALLOC_CHUNK)
-    out_of_memory(cinfo, 3);	/* request exceeds malloc's ability */
+    out_of_memory(cinfo, 3);    /* request exceeds malloc's ability */
 
   /* Always make a new pool */
   if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS)
-    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id);	/* safety check */
+    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */
 
   hdr_ptr = (large_pool_ptr) jpeg_get_large(cinfo, sizeofobject +
-					    SIZEOF(large_pool_hdr) +
-					    ALIGN_SIZE - 1);
+                                            SIZEOF(large_pool_hdr) +
+                                            ALIGN_SIZE - 1);
   if (hdr_ptr == NULL)
-    out_of_memory(cinfo, 4);	/* jpeg_get_large failed */
+    out_of_memory(cinfo, 4);    /* jpeg_get_large failed */
   mem->total_space_allocated += sizeofobject + SIZEOF(large_pool_hdr) + ALIGN_SIZE - 1;
 
   /* Success, initialize the new pool header and add to list */
@@ -417,7 +417,7 @@
 
 METHODDEF(JSAMPARRAY)
 alloc_sarray (j_common_ptr cinfo, int pool_id,
-	      JDIMENSION samplesperrow, JDIMENSION numrows)
+              JDIMENSION samplesperrow, JDIMENSION numrows)
 /* Allocate a 2-D sample array */
 {
   my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
@@ -428,12 +428,12 @@
 
   /* Make sure each row is properly aligned */
   if ((ALIGN_SIZE % SIZEOF(JSAMPLE)) != 0)
-    out_of_memory(cinfo, 5);	/* safety check */
+    out_of_memory(cinfo, 5);    /* safety check */
   samplesperrow = (JDIMENSION)round_up_pow2(samplesperrow, (2 * ALIGN_SIZE) / SIZEOF(JSAMPLE));
 
   /* Calculate max # of rows allowed in one allocation chunk */
   ltemp = (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr)) /
-	  ((long) samplesperrow * SIZEOF(JSAMPLE));
+          ((long) samplesperrow * SIZEOF(JSAMPLE));
   if (ltemp <= 0)
     ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);
   if (ltemp < (long) numrows)
@@ -444,15 +444,15 @@
 
   /* Get space for row pointers (small object) */
   result = (JSAMPARRAY) alloc_small(cinfo, pool_id,
-				    (size_t) (numrows * SIZEOF(JSAMPROW)));
+                                    (size_t) (numrows * SIZEOF(JSAMPROW)));
 
   /* Get the rows themselves (large objects) */
   currow = 0;
   while (currow < numrows) {
     rowsperchunk = MIN(rowsperchunk, numrows - currow);
     workspace = (JSAMPROW) alloc_large(cinfo, pool_id,
-	(size_t) ((size_t) rowsperchunk * (size_t) samplesperrow
-		  * SIZEOF(JSAMPLE)));
+        (size_t) ((size_t) rowsperchunk * (size_t) samplesperrow
+                  * SIZEOF(JSAMPLE)));
     for (i = rowsperchunk; i > 0; i--) {
       result[currow++] = workspace;
       workspace += samplesperrow;
@@ -470,7 +470,7 @@
 
 METHODDEF(JBLOCKARRAY)
 alloc_barray (j_common_ptr cinfo, int pool_id,
-	      JDIMENSION blocksperrow, JDIMENSION numrows)
+              JDIMENSION blocksperrow, JDIMENSION numrows)
 /* Allocate a 2-D coefficient-block array */
 {
   my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
@@ -481,11 +481,11 @@
 
   /* Make sure each row is properly aligned */
   if ((SIZEOF(JBLOCK) % ALIGN_SIZE) != 0)
-    out_of_memory(cinfo, 6);	/* safety check */
+    out_of_memory(cinfo, 6);    /* safety check */
 
   /* Calculate max # of rows allowed in one allocation chunk */
   ltemp = (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr)) /
-	  ((long) blocksperrow * SIZEOF(JBLOCK));
+          ((long) blocksperrow * SIZEOF(JBLOCK));
   if (ltemp <= 0)
     ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);
   if (ltemp < (long) numrows)
@@ -496,15 +496,15 @@
 
   /* Get space for row pointers (small object) */
   result = (JBLOCKARRAY) alloc_small(cinfo, pool_id,
-				     (size_t) (numrows * SIZEOF(JBLOCKROW)));
+                                     (size_t) (numrows * SIZEOF(JBLOCKROW)));
 
   /* Get the rows themselves (large objects) */
   currow = 0;
   while (currow < numrows) {
     rowsperchunk = MIN(rowsperchunk, numrows - currow);
     workspace = (JBLOCKROW) alloc_large(cinfo, pool_id,
-	(size_t) ((size_t) rowsperchunk * (size_t) blocksperrow
-		  * SIZEOF(JBLOCK)));
+        (size_t) ((size_t) rowsperchunk * (size_t) blocksperrow
+                  * SIZEOF(JBLOCK)));
     for (i = rowsperchunk; i > 0; i--) {
       result[currow++] = workspace;
       workspace += blocksperrow;
@@ -554,8 +554,8 @@
 
 METHODDEF(jvirt_sarray_ptr)
 request_virt_sarray (j_common_ptr cinfo, int pool_id, boolean pre_zero,
-		     JDIMENSION samplesperrow, JDIMENSION numrows,
-		     JDIMENSION maxaccess)
+                     JDIMENSION samplesperrow, JDIMENSION numrows,
+                     JDIMENSION maxaccess)
 /* Request a virtual 2-D sample array */
 {
   my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
@@ -563,18 +563,18 @@
 
   /* Only IMAGE-lifetime virtual arrays are currently supported */
   if (pool_id != JPOOL_IMAGE)
-    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id);	/* safety check */
+    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */
 
   /* get control block */
   result = (jvirt_sarray_ptr) alloc_small(cinfo, pool_id,
-					  SIZEOF(struct jvirt_sarray_control));
+                                          SIZEOF(struct jvirt_sarray_control));
 
-  result->mem_buffer = NULL;	/* marks array not yet realized */
+  result->mem_buffer = NULL;    /* marks array not yet realized */
   result->rows_in_array = numrows;
   result->samplesperrow = samplesperrow;
   result->maxaccess = maxaccess;
   result->pre_zero = pre_zero;
-  result->b_s_open = FALSE;	/* no associated backing-store object */
+  result->b_s_open = FALSE;     /* no associated backing-store object */
   result->next = mem->virt_sarray_list; /* add to list of virtual arrays */
   mem->virt_sarray_list = result;
 
@@ -584,8 +584,8 @@
 
 METHODDEF(jvirt_barray_ptr)
 request_virt_barray (j_common_ptr cinfo, int pool_id, boolean pre_zero,
-		     JDIMENSION blocksperrow, JDIMENSION numrows,
-		     JDIMENSION maxaccess)
+                     JDIMENSION blocksperrow, JDIMENSION numrows,
+                     JDIMENSION maxaccess)
 /* Request a virtual 2-D coefficient-block array */
 {
   my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
@@ -593,18 +593,18 @@
 
   /* Only IMAGE-lifetime virtual arrays are currently supported */
   if (pool_id != JPOOL_IMAGE)
-    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id);	/* safety check */
+    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */
 
   /* get control block */
   result = (jvirt_barray_ptr) alloc_small(cinfo, pool_id,
-					  SIZEOF(struct jvirt_barray_control));
+                                          SIZEOF(struct jvirt_barray_control));
 
-  result->mem_buffer = NULL;	/* marks array not yet realized */
+  result->mem_buffer = NULL;    /* marks array not yet realized */
   result->rows_in_array = numrows;
   result->blocksperrow = blocksperrow;
   result->maxaccess = maxaccess;
   result->pre_zero = pre_zero;
-  result->b_s_open = FALSE;	/* no associated backing-store object */
+  result->b_s_open = FALSE;     /* no associated backing-store object */
   result->next = mem->virt_barray_list; /* add to list of virtual arrays */
   mem->virt_barray_list = result;
 
@@ -631,26 +631,26 @@
   for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) {
     if (sptr->mem_buffer == NULL) { /* if not realized yet */
       space_per_minheight += (long) sptr->maxaccess *
-			     (long) sptr->samplesperrow * SIZEOF(JSAMPLE);
+                             (long) sptr->samplesperrow * SIZEOF(JSAMPLE);
       maximum_space += (long) sptr->rows_in_array *
-		       (long) sptr->samplesperrow * SIZEOF(JSAMPLE);
+                       (long) sptr->samplesperrow * SIZEOF(JSAMPLE);
     }
   }
   for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) {
     if (bptr->mem_buffer == NULL) { /* if not realized yet */
       space_per_minheight += (long) bptr->maxaccess *
-			     (long) bptr->blocksperrow * SIZEOF(JBLOCK);
+                             (long) bptr->blocksperrow * SIZEOF(JBLOCK);
       maximum_space += (long) bptr->rows_in_array *
-		       (long) bptr->blocksperrow * SIZEOF(JBLOCK);
+                       (long) bptr->blocksperrow * SIZEOF(JBLOCK);
     }
   }
 
   if (space_per_minheight <= 0)
-    return;			/* no unrealized arrays, no work */
+    return;                     /* no unrealized arrays, no work */
 
   /* Determine amount of memory to actually use; this is system-dependent. */
   avail_mem = jpeg_mem_available(cinfo, space_per_minheight, maximum_space,
-				 mem->total_space_allocated);
+                                 mem->total_space_allocated);
 
   /* If the maximum space needed is available, make all the buffers full
    * height; otherwise parcel it out with the same number of minheights
@@ -673,19 +673,19 @@
     if (sptr->mem_buffer == NULL) { /* if not realized yet */
       minheights = ((long) sptr->rows_in_array - 1L) / sptr->maxaccess + 1L;
       if (minheights <= max_minheights) {
-	/* This buffer fits in memory */
-	sptr->rows_in_mem = sptr->rows_in_array;
+        /* This buffer fits in memory */
+        sptr->rows_in_mem = sptr->rows_in_array;
       } else {
-	/* It doesn't fit in memory, create backing store. */
-	sptr->rows_in_mem = (JDIMENSION) (max_minheights * sptr->maxaccess);
-	jpeg_open_backing_store(cinfo, & sptr->b_s_info,
-				(long) sptr->rows_in_array *
-				(long) sptr->samplesperrow *
-				(long) SIZEOF(JSAMPLE));
-	sptr->b_s_open = TRUE;
+        /* It doesn't fit in memory, create backing store. */
+        sptr->rows_in_mem = (JDIMENSION) (max_minheights * sptr->maxaccess);
+        jpeg_open_backing_store(cinfo, & sptr->b_s_info,
+                                (long) sptr->rows_in_array *
+                                (long) sptr->samplesperrow *
+                                (long) SIZEOF(JSAMPLE));
+        sptr->b_s_open = TRUE;
       }
       sptr->mem_buffer = alloc_sarray(cinfo, JPOOL_IMAGE,
-				      sptr->samplesperrow, sptr->rows_in_mem);
+                                      sptr->samplesperrow, sptr->rows_in_mem);
       sptr->rowsperchunk = mem->last_rowsperchunk;
       sptr->cur_start_row = 0;
       sptr->first_undef_row = 0;
@@ -697,19 +697,19 @@
     if (bptr->mem_buffer == NULL) { /* if not realized yet */
       minheights = ((long) bptr->rows_in_array - 1L) / bptr->maxaccess + 1L;
       if (minheights <= max_minheights) {
-	/* This buffer fits in memory */
-	bptr->rows_in_mem = bptr->rows_in_array;
+        /* This buffer fits in memory */
+        bptr->rows_in_mem = bptr->rows_in_array;
       } else {
-	/* It doesn't fit in memory, create backing store. */
-	bptr->rows_in_mem = (JDIMENSION) (max_minheights * bptr->maxaccess);
-	jpeg_open_backing_store(cinfo, & bptr->b_s_info,
-				(long) bptr->rows_in_array *
-				(long) bptr->blocksperrow *
-				(long) SIZEOF(JBLOCK));
-	bptr->b_s_open = TRUE;
+        /* It doesn't fit in memory, create backing store. */
+        bptr->rows_in_mem = (JDIMENSION) (max_minheights * bptr->maxaccess);
+        jpeg_open_backing_store(cinfo, & bptr->b_s_info,
+                                (long) bptr->rows_in_array *
+                                (long) bptr->blocksperrow *
+                                (long) SIZEOF(JBLOCK));
+        bptr->b_s_open = TRUE;
       }
       bptr->mem_buffer = alloc_barray(cinfo, JPOOL_IMAGE,
-				      bptr->blocksperrow, bptr->rows_in_mem);
+                                      bptr->blocksperrow, bptr->rows_in_mem);
       bptr->rowsperchunk = mem->last_rowsperchunk;
       bptr->cur_start_row = 0;
       bptr->first_undef_row = 0;
@@ -736,17 +736,17 @@
     rows = MIN(rows, (long) ptr->first_undef_row - thisrow);
     /* Transfer no more than fits in file */
     rows = MIN(rows, (long) ptr->rows_in_array - thisrow);
-    if (rows <= 0)		/* this chunk might be past end of file! */
+    if (rows <= 0)              /* this chunk might be past end of file! */
       break;
     byte_count = rows * bytesperrow;
     if (writing)
       (*ptr->b_s_info.write_backing_store) (cinfo, & ptr->b_s_info,
-					    (void FAR *) ptr->mem_buffer[i],
-					    file_offset, byte_count);
+                                            (void FAR *) ptr->mem_buffer[i],
+                                            file_offset, byte_count);
     else
       (*ptr->b_s_info.read_backing_store) (cinfo, & ptr->b_s_info,
-					   (void FAR *) ptr->mem_buffer[i],
-					   file_offset, byte_count);
+                                           (void FAR *) ptr->mem_buffer[i],
+                                           file_offset, byte_count);
     file_offset += byte_count;
   }
 }
@@ -769,17 +769,17 @@
     rows = MIN(rows, (long) ptr->first_undef_row - thisrow);
     /* Transfer no more than fits in file */
     rows = MIN(rows, (long) ptr->rows_in_array - thisrow);
-    if (rows <= 0)		/* this chunk might be past end of file! */
+    if (rows <= 0)              /* this chunk might be past end of file! */
       break;
     byte_count = rows * bytesperrow;
     if (writing)
       (*ptr->b_s_info.write_backing_store) (cinfo, & ptr->b_s_info,
-					    (void FAR *) ptr->mem_buffer[i],
-					    file_offset, byte_count);
+                                            (void FAR *) ptr->mem_buffer[i],
+                                            file_offset, byte_count);
     else
       (*ptr->b_s_info.read_backing_store) (cinfo, & ptr->b_s_info,
-					   (void FAR *) ptr->mem_buffer[i],
-					   file_offset, byte_count);
+                                           (void FAR *) ptr->mem_buffer[i],
+                                           file_offset, byte_count);
     file_offset += byte_count;
   }
 }
@@ -787,8 +787,8 @@
 
 METHODDEF(JSAMPARRAY)
 access_virt_sarray (j_common_ptr cinfo, jvirt_sarray_ptr ptr,
-		    JDIMENSION start_row, JDIMENSION num_rows,
-		    boolean writable)
+                    JDIMENSION start_row, JDIMENSION num_rows,
+                    boolean writable)
 /* Access the part of a virtual sample array starting at start_row */
 /* and extending for num_rows rows.  writable is true if  */
 /* caller intends to modify the accessed area. */
@@ -826,7 +826,7 @@
 
       ltemp = (long) end_row - (long) ptr->rows_in_mem;
       if (ltemp < 0)
-	ltemp = 0;		/* don't fall off front end of file */
+        ltemp = 0;              /* don't fall off front end of file */
       ptr->cur_start_row = (JDIMENSION) ltemp;
     }
     /* Read in the selected part of the array.
@@ -841,9 +841,9 @@
    */
   if (ptr->first_undef_row < end_row) {
     if (ptr->first_undef_row < start_row) {
-      if (writable)		/* writer skipped over a section of array */
-	ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
-      undef_row = start_row;	/* but reader is allowed to read ahead */
+      if (writable)             /* writer skipped over a section of array */
+        ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
+      undef_row = start_row;    /* but reader is allowed to read ahead */
     } else {
       undef_row = ptr->first_undef_row;
     }
@@ -854,12 +854,12 @@
       undef_row -= ptr->cur_start_row; /* make indexes relative to buffer */
       end_row -= ptr->cur_start_row;
       while (undef_row < end_row) {
-	jzero_far((void FAR *) ptr->mem_buffer[undef_row], bytesperrow);
-	undef_row++;
+        jzero_far((void FAR *) ptr->mem_buffer[undef_row], bytesperrow);
+        undef_row++;
       }
     } else {
-      if (! writable)		/* reader looking at undefined data */
-	ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
+      if (! writable)           /* reader looking at undefined data */
+        ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
     }
   }
   /* Flag the buffer dirty if caller will write in it */
@@ -872,8 +872,8 @@
 
 METHODDEF(JBLOCKARRAY)
 access_virt_barray (j_common_ptr cinfo, jvirt_barray_ptr ptr,
-		    JDIMENSION start_row, JDIMENSION num_rows,
-		    boolean writable)
+                    JDIMENSION start_row, JDIMENSION num_rows,
+                    boolean writable)
 /* Access the part of a virtual block array starting at start_row */
 /* and extending for num_rows rows.  writable is true if  */
 /* caller intends to modify the accessed area. */
@@ -911,7 +911,7 @@
 
       ltemp = (long) end_row - (long) ptr->rows_in_mem;
       if (ltemp < 0)
-	ltemp = 0;		/* don't fall off front end of file */
+        ltemp = 0;              /* don't fall off front end of file */
       ptr->cur_start_row = (JDIMENSION) ltemp;
     }
     /* Read in the selected part of the array.
@@ -926,9 +926,9 @@
    */
   if (ptr->first_undef_row < end_row) {
     if (ptr->first_undef_row < start_row) {
-      if (writable)		/* writer skipped over a section of array */
-	ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
-      undef_row = start_row;	/* but reader is allowed to read ahead */
+      if (writable)             /* writer skipped over a section of array */
+        ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
+      undef_row = start_row;    /* but reader is allowed to read ahead */
     } else {
       undef_row = ptr->first_undef_row;
     }
@@ -939,12 +939,12 @@
       undef_row -= ptr->cur_start_row; /* make indexes relative to buffer */
       end_row -= ptr->cur_start_row;
       while (undef_row < end_row) {
-	jzero_far((void FAR *) ptr->mem_buffer[undef_row], bytesperrow);
-	undef_row++;
+        jzero_far((void FAR *) ptr->mem_buffer[undef_row], bytesperrow);
+        undef_row++;
       }
     } else {
-      if (! writable)		/* reader looking at undefined data */
-	ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
+      if (! writable)           /* reader looking at undefined data */
+        ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
     }
   }
   /* Flag the buffer dirty if caller will write in it */
@@ -968,7 +968,7 @@
   size_t space_freed;
 
   if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS)
-    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id);	/* safety check */
+    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */
 
 #ifdef MEM_STATS
   if (cinfo->err->trace_level > 1)
@@ -981,16 +981,16 @@
     jvirt_barray_ptr bptr;
 
     for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) {
-      if (sptr->b_s_open) {	/* there may be no backing store */
-	sptr->b_s_open = FALSE;	/* prevent recursive close if error */
-	(*sptr->b_s_info.close_backing_store) (cinfo, & sptr->b_s_info);
+      if (sptr->b_s_open) {     /* there may be no backing store */
+        sptr->b_s_open = FALSE; /* prevent recursive close if error */
+        (*sptr->b_s_info.close_backing_store) (cinfo, & sptr->b_s_info);
       }
     }
     mem->virt_sarray_list = NULL;
     for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) {
-      if (bptr->b_s_open) {	/* there may be no backing store */
-	bptr->b_s_open = FALSE;	/* prevent recursive close if error */
-	(*bptr->b_s_info.close_backing_store) (cinfo, & bptr->b_s_info);
+      if (bptr->b_s_open) {     /* there may be no backing store */
+        bptr->b_s_open = FALSE; /* prevent recursive close if error */
+        (*bptr->b_s_info.close_backing_store) (cinfo, & bptr->b_s_info);
       }
     }
     mem->virt_barray_list = NULL;
@@ -1003,8 +1003,8 @@
   while (lhdr_ptr != NULL) {
     large_pool_ptr next_lhdr_ptr = lhdr_ptr->next;
     space_freed = lhdr_ptr->bytes_used +
-		  lhdr_ptr->bytes_left +
-		  SIZEOF(large_pool_hdr);
+                  lhdr_ptr->bytes_left +
+                  SIZEOF(large_pool_hdr);
     jpeg_free_large(cinfo, (void FAR *) lhdr_ptr, space_freed);
     mem->total_space_allocated -= space_freed;
     lhdr_ptr = next_lhdr_ptr;
@@ -1017,8 +1017,8 @@
   while (shdr_ptr != NULL) {
     small_pool_ptr next_shdr_ptr = shdr_ptr->next;
     space_freed = shdr_ptr->bytes_used +
-		  shdr_ptr->bytes_left +
-		  SIZEOF(small_pool_hdr);
+                  shdr_ptr->bytes_left +
+                  SIZEOF(small_pool_hdr);
     jpeg_free_small(cinfo, (void *) shdr_ptr, space_freed);
     mem->total_space_allocated -= space_freed;
     shdr_ptr = next_shdr_ptr;
@@ -1046,9 +1046,9 @@
 
   /* Release the memory manager control block too. */
   jpeg_free_small(cinfo, (void *) cinfo->mem, SIZEOF(my_memory_mgr));
-  cinfo->mem = NULL;		/* ensures I will be called only once */
+  cinfo->mem = NULL;            /* ensures I will be called only once */
 
-  jpeg_mem_term(cinfo);		/* system-dependent cleanup */
+  jpeg_mem_term(cinfo);         /* system-dependent cleanup */
 }
 
 
@@ -1065,7 +1065,7 @@
   int pool;
   size_t test_mac;
 
-  cinfo->mem = NULL;		/* for safety if init fails */
+  cinfo->mem = NULL;            /* for safety if init fails */
 
   /* Check for configuration errors.
    * SIZEOF(ALIGN_TYPE) should be a power of 2; otherwise, it probably
@@ -1092,7 +1092,7 @@
   mem = (my_mem_ptr) jpeg_get_small(cinfo, SIZEOF(my_memory_mgr));
 
   if (mem == NULL) {
-    jpeg_mem_term(cinfo);	/* system-dependent cleanup */
+    jpeg_mem_term(cinfo);       /* system-dependent cleanup */
     ERREXIT1(cinfo, JERR_OUT_OF_MEMORY, 0);
   }
 
@@ -1140,9 +1140,9 @@
       char ch = 'x';
 
       if (sscanf(memenv, "%ld%c", &max_to_use, &ch) > 0) {
-	if (ch == 'm' || ch == 'M')
-	  max_to_use *= 1000L;
-	mem->pub.max_memory_to_use = max_to_use * 1000L;
+        if (ch == 'm' || ch == 'M')
+          max_to_use *= 1000L;
+        mem->pub.max_memory_to_use = max_to_use * 1000L;
       }
     }
   }