[gschneider] 51559: [libjpeg] Update to version 8c See issue #6022 for more details.

Author: gschneider
Date: Mon May  2 20:13:40 2011
New Revision: 51559

URL: http://svn.reactos.org/svn/reactos?rev=51559&view=rev
Log:
[libjpeg] Update to version 8c
See issue #6022 for more details.

Modified:
    trunk/reactos/dll/3rdparty/libjpeg/change.log
    trunk/reactos/dll/3rdparty/libjpeg/cjpeg.c
    trunk/reactos/dll/3rdparty/libjpeg/jcmarker.c
    trunk/reactos/dll/3rdparty/libjpeg/jcmaster.c

Modified: trunk/reactos/dll/3rdparty/libjpeg/change.log
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/3rdparty/libjpeg/chang…
==============================================================================
--- trunk/reactos/dll/3rdparty/libjpeg/change.log [iso-8859-1] (original)
+++ trunk/reactos/dll/3rdparty/libjpeg/change.log [iso-8859-1] Mon May  2 20:13:40 2011
@@ -1,4 +1,15 @@
 CHANGE LOG for Independent JPEG Group's JPEG software
+
+
+Version 8c  16-Jan-2011
+-----------------------
+
+Add option to compression library and cjpeg (-block N) to use
+different DCT block size.
+All N from 1 to 16 are possible.  Default is 8 (baseline format).
+Larger values produce higher compression,
+smaller values produce higher quality.
+SmartScale capable decoder (introduced with IJG JPEG 8) required.
 
 
 Version 8b  16-May-2010

Modified: trunk/reactos/dll/3rdparty/libjpeg/cjpeg.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/3rdparty/libjpeg/cjpeg…
==============================================================================
--- trunk/reactos/dll/3rdparty/libjpeg/cjpeg.c [iso-8859-1] (original)
+++ trunk/reactos/dll/3rdparty/libjpeg/cjpeg.c [iso-8859-1] Mon May  2 20:13:40 2011
@@ -2,7 +2,7 @@
  * cjpeg.c
  *
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * Modified 2003-2008 by Guido Vollbeding.
+ * Modified 2003-2010 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.
  *
@@ -165,6 +165,9 @@
   fprintf(stderr, "  -targa         Input file is Targa format (usually not
needed)\n");
 #endif
   fprintf(stderr, "Switches for advanced users:\n");
+#ifdef DCT_SCALING_SUPPORTED
+  fprintf(stderr, "  -block N       DCT block size (1..16; default is 8)\n");
+#endif
 #ifdef DCT_ISLOW_SUPPORTED
   fprintf(stderr, "  -dct int       Use integer DCT method%s\n",
 	  (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
@@ -254,9 +257,29 @@
       exit(EXIT_FAILURE);
 #endif
 
-    } else if (keymatch(arg, "baseline", 1)) {
+    } else if (keymatch(arg, "baseline", 2)) {
       /* Force baseline-compatible output (8-bit quantizer values). */
       force_baseline = TRUE;
+
+    } else if (keymatch(arg, "block", 2)) {
+      /* Set DCT block size. */
+#if defined(DCT_SCALING_SUPPORTED) && defined(JPEG_LIB_VERSION_MAJOR) &&
\
+    (JPEG_LIB_VERSION_MAJOR > 8 || (JPEG_LIB_VERSION_MAJOR == 8 && \
+     defined(JPEG_LIB_VERSION_MINOR) && JPEG_LIB_VERSION_MINOR >= 3))
+      int val;
+
+      if (++argn >= argc)	/* advance to next argument */
+	usage();
+      if (sscanf(argv[argn], "%d", &val) != 1)
+	usage();
+      if (val < 1 || val > 16)
+	usage();
+      cinfo->block_size = val;
+#else
+      fprintf(stderr, "%s: sorry, block size setting not supported\n",
+	      progname);
+      exit(EXIT_FAILURE);
+#endif
 
     } else if (keymatch(arg, "dct", 2)) {
       /* Select DCT algorithm. */

Modified: trunk/reactos/dll/3rdparty/libjpeg/jcmarker.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/3rdparty/libjpeg/jcmar…
==============================================================================
--- trunk/reactos/dll/3rdparty/libjpeg/jcmarker.c [iso-8859-1] (original)
+++ trunk/reactos/dll/3rdparty/libjpeg/jcmarker.c [iso-8859-1] Mon May  2 20:13:40 2011
@@ -2,7 +2,7 @@
  * jcmarker.c
  *
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * Modified 2003-2009 by Guido Vollbeding.
+ * Modified 2003-2010 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.
  *
@@ -231,10 +231,10 @@
   char ac_in_use[NUM_ARITH_TBLS];
   int length, i;
   jpeg_component_info *compptr;
-  
+
   for (i = 0; i < NUM_ARITH_TBLS; i++)
     dc_in_use[i] = ac_in_use[i] = 0;
-  
+
   for (i = 0; i < cinfo->comps_in_scan; i++) {
     compptr = cinfo->cur_comp_info[i];
     /* DC needs no table for refinement scan */
@@ -244,23 +244,25 @@
     if (cinfo->Se)
       ac_in_use[compptr->ac_tbl_no] = 1;
   }
-  
+
   length = 0;
   for (i = 0; i < NUM_ARITH_TBLS; i++)
     length += dc_in_use[i] + ac_in_use[i];
-  
-  emit_marker(cinfo, M_DAC);
-  
-  emit_2bytes(cinfo, length*2 + 2);
-  
-  for (i = 0; i < NUM_ARITH_TBLS; i++) {
-    if (dc_in_use[i]) {
-      emit_byte(cinfo, i);
-      emit_byte(cinfo, cinfo->arith_dc_L[i] + (cinfo->arith_dc_U[i]<<4));
-    }
-    if (ac_in_use[i]) {
-      emit_byte(cinfo, i + 0x10);
-      emit_byte(cinfo, cinfo->arith_ac_K[i]);
+
+  if (length) {
+    emit_marker(cinfo, M_DAC);
+
+    emit_2bytes(cinfo, length*2 + 2);
+
+    for (i = 0; i < NUM_ARITH_TBLS; i++) {
+      if (dc_in_use[i]) {
+	emit_byte(cinfo, i);
+	emit_byte(cinfo, cinfo->arith_dc_L[i] + (cinfo->arith_dc_U[i]<<4));
+      }
+      if (ac_in_use[i]) {
+	emit_byte(cinfo, i + 0x10);
+	emit_byte(cinfo, cinfo->arith_ac_K[i]);
+      }
     }
   }
 #endif /* C_ARITH_CODING_SUPPORTED */

Modified: trunk/reactos/dll/3rdparty/libjpeg/jcmaster.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/3rdparty/libjpeg/jcmas…
==============================================================================
--- trunk/reactos/dll/3rdparty/libjpeg/jcmaster.c [iso-8859-1] (original)
+++ trunk/reactos/dll/3rdparty/libjpeg/jcmaster.c [iso-8859-1] Mon May  2 20:13:40 2011
@@ -2,7 +2,7 @@
  * jcmaster.c
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 2003-2010 by Guido Vollbeding.
+ * Modified 2003-2011 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.
  *
@@ -55,125 +55,140 @@
 {
 #ifdef DCT_SCALING_SUPPORTED
 
+  /* Sanity check on input image dimensions to prevent overflow in
+   * following calculation.
+   * We do check jpeg_width and jpeg_height in initial_setup below,
+   * but image_width and image_height can come from arbitrary data,
+   * and we need some space for multiplication by block_size.
+   */
+  if (((long) cinfo->image_width >> 24) || ((long) cinfo->image_height
>> 24))
+    ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION);
+
   /* Compute actual JPEG image dimensions and DCT scaling choices. */
-  if (cinfo->scale_num >= cinfo->scale_denom * 8) {
-    /* Provide 8/1 scaling */
-    cinfo->jpeg_width = cinfo->image_width << 3;
-    cinfo->jpeg_height = cinfo->image_height << 3;
+  if (cinfo->scale_num >= cinfo->scale_denom * cinfo->block_size) {
+    /* Provide block_size/1 scaling */
+    cinfo->jpeg_width = cinfo->image_width * cinfo->block_size;
+    cinfo->jpeg_height = cinfo->image_height * cinfo->block_size;
     cinfo->min_DCT_h_scaled_size = 1;
     cinfo->min_DCT_v_scaled_size = 1;
-  } else if (cinfo->scale_num >= cinfo->scale_denom * 4) {
-    /* Provide 4/1 scaling */
-    cinfo->jpeg_width = cinfo->image_width << 2;
-    cinfo->jpeg_height = cinfo->image_height << 2;
+  } else if (cinfo->scale_num * 2 >= cinfo->scale_denom * cinfo->block_size)
{
+    /* Provide block_size/2 scaling */
+    cinfo->jpeg_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 2L);
+    cinfo->jpeg_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 2L);
     cinfo->min_DCT_h_scaled_size = 2;
     cinfo->min_DCT_v_scaled_size = 2;
-  } else if (cinfo->scale_num * 3 >= cinfo->scale_denom * 8) {
-    /* Provide 8/3 scaling */
-    cinfo->jpeg_width = (cinfo->image_width << 1) + (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_width * 2, 3L);
-    cinfo->jpeg_height = (cinfo->image_height << 1) + (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_height * 2, 3L);
+  } else if (cinfo->scale_num * 3 >= cinfo->scale_denom * cinfo->block_size)
{
+    /* Provide block_size/3 scaling */
+    cinfo->jpeg_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 3L);
+    cinfo->jpeg_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 3L);
     cinfo->min_DCT_h_scaled_size = 3;
     cinfo->min_DCT_v_scaled_size = 3;
-  } else if (cinfo->scale_num >= cinfo->scale_denom * 2) {
-    /* Provide 2/1 scaling */
-    cinfo->jpeg_width = cinfo->image_width << 1;
-    cinfo->jpeg_height = cinfo->image_height << 1;
+  } else if (cinfo->scale_num * 4 >= cinfo->scale_denom * cinfo->block_size)
{
+    /* Provide block_size/4 scaling */
+    cinfo->jpeg_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 4L);
+    cinfo->jpeg_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 4L);
     cinfo->min_DCT_h_scaled_size = 4;
     cinfo->min_DCT_v_scaled_size = 4;
-  } else if (cinfo->scale_num * 5 >= cinfo->scale_denom * 8) {
-    /* Provide 8/5 scaling */
-    cinfo->jpeg_width = cinfo->image_width + (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_width * 3, 5L);
-    cinfo->jpeg_height = cinfo->image_height + (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_height * 3, 5L);
+  } else if (cinfo->scale_num * 5 >= cinfo->scale_denom * cinfo->block_size)
{
+    /* Provide block_size/5 scaling */
+    cinfo->jpeg_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 5L);
+    cinfo->jpeg_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 5L);
     cinfo->min_DCT_h_scaled_size = 5;
     cinfo->min_DCT_v_scaled_size = 5;
-  } else if (cinfo->scale_num * 3 >= cinfo->scale_denom * 4) {
-    /* Provide 4/3 scaling */
-    cinfo->jpeg_width = cinfo->image_width + (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_width, 3L);
-    cinfo->jpeg_height = cinfo->image_height + (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_height, 3L);
+  } else if (cinfo->scale_num * 6 >= cinfo->scale_denom * cinfo->block_size)
{
+    /* Provide block_size/6 scaling */
+    cinfo->jpeg_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 6L);
+    cinfo->jpeg_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 6L);
     cinfo->min_DCT_h_scaled_size = 6;
     cinfo->min_DCT_v_scaled_size = 6;
-  } else if (cinfo->scale_num * 7 >= cinfo->scale_denom * 8) {
-    /* Provide 8/7 scaling */
-    cinfo->jpeg_width = cinfo->image_width + (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_width, 7L);
-    cinfo->jpeg_height = cinfo->image_height + (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_height, 7L);
+  } else if (cinfo->scale_num * 7 >= cinfo->scale_denom * cinfo->block_size)
{
+    /* Provide block_size/7 scaling */
+    cinfo->jpeg_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 7L);
+    cinfo->jpeg_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 7L);
     cinfo->min_DCT_h_scaled_size = 7;
     cinfo->min_DCT_v_scaled_size = 7;
-  } else if (cinfo->scale_num >= cinfo->scale_denom) {
-    /* Provide 1/1 scaling */
-    cinfo->jpeg_width = cinfo->image_width;
-    cinfo->jpeg_height = cinfo->image_height;
+  } else if (cinfo->scale_num * 8 >= cinfo->scale_denom * cinfo->block_size)
{
+    /* Provide block_size/8 scaling */
+    cinfo->jpeg_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 8L);
+    cinfo->jpeg_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 8L);
     cinfo->min_DCT_h_scaled_size = 8;
     cinfo->min_DCT_v_scaled_size = 8;
-  } else if (cinfo->scale_num * 9 >= cinfo->scale_denom * 8) {
-    /* Provide 8/9 scaling */
-    cinfo->jpeg_width = (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_width * 8, 9L);
-    cinfo->jpeg_height = (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_height * 8, 9L);
+  } else if (cinfo->scale_num * 9 >= cinfo->scale_denom * cinfo->block_size)
{
+    /* Provide block_size/9 scaling */
+    cinfo->jpeg_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 9L);
+    cinfo->jpeg_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 9L);
     cinfo->min_DCT_h_scaled_size = 9;
     cinfo->min_DCT_v_scaled_size = 9;
-  } else if (cinfo->scale_num * 5 >= cinfo->scale_denom * 4) {
-    /* Provide 4/5 scaling */
-    cinfo->jpeg_width = (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_width * 4, 5L);
-    cinfo->jpeg_height = (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_height * 4, 5L);
+  } else if (cinfo->scale_num * 10 >= cinfo->scale_denom * cinfo->block_size)
{
+    /* Provide block_size/10 scaling */
+    cinfo->jpeg_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 10L);
+    cinfo->jpeg_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 10L);
     cinfo->min_DCT_h_scaled_size = 10;
     cinfo->min_DCT_v_scaled_size = 10;
-  } else if (cinfo->scale_num * 11 >= cinfo->scale_denom * 8) {
-    /* Provide 8/11 scaling */
-    cinfo->jpeg_width = (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_width * 8, 11L);
-    cinfo->jpeg_height = (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_height * 8, 11L);
+  } else if (cinfo->scale_num * 11 >= cinfo->scale_denom * cinfo->block_size)
{
+    /* Provide block_size/11 scaling */
+    cinfo->jpeg_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 11L);
+    cinfo->jpeg_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 11L);
     cinfo->min_DCT_h_scaled_size = 11;
     cinfo->min_DCT_v_scaled_size = 11;
-  } else if (cinfo->scale_num * 3 >= cinfo->scale_denom * 2) {
-    /* Provide 2/3 scaling */
-    cinfo->jpeg_width = (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_width * 2, 3L);
-    cinfo->jpeg_height = (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_height * 2, 3L);
+  } else if (cinfo->scale_num * 12 >= cinfo->scale_denom * cinfo->block_size)
{
+    /* Provide block_size/12 scaling */
+    cinfo->jpeg_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 12L);
+    cinfo->jpeg_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 12L);
     cinfo->min_DCT_h_scaled_size = 12;
     cinfo->min_DCT_v_scaled_size = 12;
-  } else if (cinfo->scale_num * 13 >= cinfo->scale_denom * 8) {
-    /* Provide 8/13 scaling */
-    cinfo->jpeg_width = (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_width * 8, 13L);
-    cinfo->jpeg_height = (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_height * 8, 13L);
+  } else if (cinfo->scale_num * 13 >= cinfo->scale_denom * cinfo->block_size)
{
+    /* Provide block_size/13 scaling */
+    cinfo->jpeg_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 13L);
+    cinfo->jpeg_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 13L);
     cinfo->min_DCT_h_scaled_size = 13;
     cinfo->min_DCT_v_scaled_size = 13;
-  } else if (cinfo->scale_num * 7 >= cinfo->scale_denom * 4) {
-    /* Provide 4/7 scaling */
-    cinfo->jpeg_width = (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_width * 4, 7L);
-    cinfo->jpeg_height = (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_height * 4, 7L);
+  } else if (cinfo->scale_num * 14 >= cinfo->scale_denom * cinfo->block_size)
{
+    /* Provide block_size/14 scaling */
+    cinfo->jpeg_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 14L);
+    cinfo->jpeg_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 14L);
     cinfo->min_DCT_h_scaled_size = 14;
     cinfo->min_DCT_v_scaled_size = 14;
-  } else if (cinfo->scale_num * 15 >= cinfo->scale_denom * 8) {
-    /* Provide 8/15 scaling */
-    cinfo->jpeg_width = (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_width * 8, 15L);
-    cinfo->jpeg_height = (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_height * 8, 15L);
+  } else if (cinfo->scale_num * 15 >= cinfo->scale_denom * cinfo->block_size)
{
+    /* Provide block_size/15 scaling */
+    cinfo->jpeg_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 15L);
+    cinfo->jpeg_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 15L);
     cinfo->min_DCT_h_scaled_size = 15;
     cinfo->min_DCT_v_scaled_size = 15;
   } else {
-    /* Provide 1/2 scaling */
-    cinfo->jpeg_width = (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_width, 2L);
-    cinfo->jpeg_height = (JDIMENSION)
-      jdiv_round_up((long) cinfo->image_height, 2L);
+    /* Provide block_size/16 scaling */
+    cinfo->jpeg_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 16L);
+    cinfo->jpeg_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 16L);
     cinfo->min_DCT_h_scaled_size = 16;
     cinfo->min_DCT_v_scaled_size = 16;
   }
@@ -193,13 +208,33 @@
 LOCAL(void)
 jpeg_calc_trans_dimensions (j_compress_ptr cinfo)
 {
-  if (cinfo->min_DCT_h_scaled_size < 1 || cinfo->min_DCT_h_scaled_size > 16
-      || cinfo->min_DCT_h_scaled_size != cinfo->min_DCT_v_scaled_size)
+  if (cinfo->min_DCT_h_scaled_size != cinfo->min_DCT_v_scaled_size)
     ERREXIT2(cinfo, JERR_BAD_DCTSIZE,
 	     cinfo->min_DCT_h_scaled_size, cinfo->min_DCT_v_scaled_size);
 
   cinfo->block_size = cinfo->min_DCT_h_scaled_size;
-
+}
+
+
+LOCAL(void)
+initial_setup (j_compress_ptr cinfo, boolean transcode_only)
+/* Do computations that are needed before master selection phase */
+{
+  int ci, ssize;
+  jpeg_component_info *compptr;
+  long samplesperrow;
+  JDIMENSION jd_samplesperrow;
+
+  if (transcode_only)
+    jpeg_calc_trans_dimensions(cinfo);
+  else
+    jpeg_calc_jpeg_dimensions(cinfo);
+
+  /* Sanity check on block_size */
+  if (cinfo->block_size < 1 || cinfo->block_size > 16)
+    ERREXIT2(cinfo, JERR_BAD_DCTSIZE, cinfo->block_size, cinfo->block_size);
+
+  /* Derive natural_order from block_size */
   switch (cinfo->block_size) {
   case 2: cinfo->natural_order = jpeg_natural_order2; break;
   case 3: cinfo->natural_order = jpeg_natural_order3; break;
@@ -210,24 +245,9 @@
   default: cinfo->natural_order = jpeg_natural_order; break;
   }
 
+  /* Derive lim_Se from block_size */
   cinfo->lim_Se = cinfo->block_size < DCTSIZE ?
     cinfo->block_size * cinfo->block_size - 1 : DCTSIZE2-1;
-}
-
-
-LOCAL(void)
-initial_setup (j_compress_ptr cinfo, boolean transcode_only)
-/* Do computations that are needed before master selection phase */
-{
-  int ci, ssize;
-  jpeg_component_info *compptr;
-  long samplesperrow;
-  JDIMENSION jd_samplesperrow;
-
-  if (transcode_only)
-    jpeg_calc_trans_dimensions(cinfo);
-  else
-    jpeg_calc_jpeg_dimensions(cinfo);
 
   /* Sanity check on image dimensions */
   if (cinfo->jpeg_height <= 0 || cinfo->jpeg_width <= 0 ||