libjpeg: moved to github
libjpeg: moved to github

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/packages@41470 3c298f89-4303-0410-b956-a3cf2f4a3e73

file:a/libs/jpeg/Makefile (deleted)
--- a/libs/jpeg/Makefile
+++ /dev/null
@@ -1,102 +1,1 @@
-#
-# Copyright (C) 2006-2012 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
-include $(TOPDIR)/rules.mk
-
-PKG_NAME:=jpeg
-PKG_VERSION:=6b
-PKG_RELEASE:=1
-
-PKG_SOURCE:=$(PKG_NAME)src.v$(PKG_VERSION).tar.gz
-PKG_SOURCE_URL:=http://www.ijg.org/files/ \
-        ftp://ftp.uu.net/graphics/jpeg/
-PKG_MD5SUM:=dbd5f3b47ed13132f04c685d608a7547
-
-PKG_LICENSE:=FREE
-PKG_LICENSE_FILES:=README
-
-PKG_BUILD_PARALLEL:=1
-PKG_BUILD_DEPENDS:=libltdl
-
-include $(INCLUDE_DIR)/host-build.mk
-include $(INCLUDE_DIR)/package.mk
-
-define Package/jpeg/Default
-  TITLE:=The Independent JPEG Group's JPEG
-  URL:=http://www.ijg.org/
-endef
-
-define Package/libjpeg
-  $(call Package/jpeg/Default)
-  SECTION:=libs
-  CATEGORY:=Libraries
-  TITLE+= runtime library
-endef
-
-define Package/jpeg-tools
-  $(call Package/jpeg/Default)
-  SECTION:=utils
-  CATEGORY:=Utilities
-  DEPENDS:=+libjpeg
-  TITLE+= manipulation tools
-endef
-
-TARGET_CFLAGS += $(FPIC)
-
-CONFIGURE_ARGS += \
-	--enable-shared \
-	--enable-static \
-
-HOST_CONFIGURE_ARGS += \
-	--enable-shared \
-	--enable-static \
-
-define Build/Prepare
-	$(call Build/Prepare/Default)
-	(cd $(PKG_BUILD_DIR); \
-		rm -f ltconfig ltmain.sh libtool; \
-		ln -s `which true` ltconfig; \
-		ln -s $(STAGING_DIR)/host/bin/libtool libtool; \
-	)
-endef
-
-define Build/Compile
-	$(INSTALL_DIR) $(PKG_INSTALL_DIR)/usr/{include,lib,bin,man/man1}
-	+$(MAKE) $(PKG_JOBS) -C $(PKG_BUILD_DIR) \
-		LIBTOOL="./libtool --tag=CC" \
-		prefix="$(PKG_INSTALL_DIR)/usr" \
-		exec_prefix="$(PKG_INSTALL_DIR)/usr" \
-		all
-	$(MAKE) -C $(PKG_BUILD_DIR) \
-		prefix="$(PKG_INSTALL_DIR)/usr" \
-		exec_prefix="$(PKG_INSTALL_DIR)/usr" \
-		install install-headers install-lib
-endef
-
-define Build/InstallDev
-	$(INSTALL_DIR) $(1)/usr/include
-	$(CP) $(PKG_INSTALL_DIR)/usr/include/jpeglib.h $(1)/usr/include/
-	$(CP) $(PKG_BUILD_DIR)/jpegint.h $(1)/usr/include/
-	$(CP) $(PKG_INSTALL_DIR)/usr/include/j{config,error,morecfg}.h $(1)/usr/include/
-	$(INSTALL_DIR) $(1)/usr/lib
-	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libjpeg.{a,so*} $(1)/usr/lib/
-endef
-
-define Package/libjpeg/install
-	$(INSTALL_DIR) $(1)/usr/lib
-	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libjpeg.so.* $(1)/usr/lib/
-endef
-
-define Package/jpeg-tools/install
-	$(INSTALL_DIR) $(1)/usr/bin
-	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/*jpeg* $(1)/usr/bin/
-endef
-
-$(eval $(call HostBuild))
-$(eval $(call BuildPackage,libjpeg))
-$(eval $(call BuildPackage,jpeg-tools))
-

--- a/libs/jpeg/patches/001-allow-ccache.patch
+++ /dev/null
@@ -1,12 +1,1 @@
---- a/makefile.cfg
-+++ b/makefile.cfg
-@@ -168,7 +168,7 @@ libjpeg.a: @A2K_DEPS@ $(LIBOBJECTS)
- 
- # with libtool:
- libjpeg.la: @A2K_DEPS@ $(LIBOBJECTS)
--	$(LIBTOOL) --mode=link $(CC) -o libjpeg.la $(LIBOBJECTS) \
-+	$(LIBTOOL) --mode=link "$(CC)" -o libjpeg.la $(LIBOBJECTS) \
- 		-rpath $(libdir) -version-info $(JPEG_LIB_VERSION)
- 
- # sample programs:
 

--- a/libs/jpeg/patches/200-crop.patch
+++ /dev/null
@@ -1,1897 +1,1 @@
-#! /bin/sh -e
 
-# DP: Lossless-crop patch from <http://sylvana.net/jpegcrop/croppatch.tar.gz>
-# DP: by <guido@jpegclub.org>.
-
-case "$1" in
-    -patch) patch -f --no-backup-if-mismatch -p1 < $0;;
-    -unpatch) patch -f --no-backup-if-mismatch -R -p1 < $0;;
-    *)
-        echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
-        exit 1
-esac
-exit 0
-@DPATCH@
-diff -urNad /home/bill/debian/libjpeg/libjpeg6b-6b/jerror.h libjpeg6b-6b/jerror.h
---- /home/bill/debian/libjpeg/libjpeg6b-6b/jerror.h	2003-09-22 18:15:48.000000000 +0200
-+++ libjpeg6b-6b/jerror.h	2003-09-22 18:16:12.000000000 +0200
-@@ -45,6 +45,7 @@
- JMESSAGE(JERR_BAD_ALLOC_CHUNK, "MAX_ALLOC_CHUNK is wrong, please fix")
- JMESSAGE(JERR_BAD_BUFFER_MODE, "Bogus buffer control mode")
- JMESSAGE(JERR_BAD_COMPONENT_ID, "Invalid component ID %d in SOS")
-+JMESSAGE(JERR_BAD_CROP_SPEC, "Invalid crop request")
- JMESSAGE(JERR_BAD_DCT_COEF, "DCT coefficient out of range")
- JMESSAGE(JERR_BAD_DCTSIZE, "IDCT output block size %d not supported")
- JMESSAGE(JERR_BAD_HUFF_TABLE, "Bogus Huffman table definition")
-diff -urNad /home/bill/debian/libjpeg/libjpeg6b-6b/jpegtran.c libjpeg6b-6b/jpegtran.c
---- /home/bill/debian/libjpeg/libjpeg6b-6b/jpegtran.c	2003-09-22 18:15:48.000000000 +0200
-+++ libjpeg6b-6b/jpegtran.c	2003-09-22 18:16:22.000000000 +0200
-@@ -1,7 +1,7 @@
- /*
-  * jpegtran.c
-  *
-- * Copyright (C) 1995-1997, Thomas G. Lane.
-+ * Copyright (C) 1995-2001, 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.
-  *
-@@ -64,8 +64,10 @@
- #endif
- #if TRANSFORMS_SUPPORTED
-   fprintf(stderr, "Switches for modifying the image:\n");
-+  fprintf(stderr, "  -crop WxH+X+Y  Crop to a rectangular subarea\n");
-   fprintf(stderr, "  -grayscale     Reduce to grayscale (omit color data)\n");
-   fprintf(stderr, "  -flip [horizontal|vertical]  Mirror image (left-right or top-bottom)\n");
-+  fprintf(stderr, "  -perfect       Fail if there is non-transformable edge blocks\n");
-   fprintf(stderr, "  -rotate [90|180|270]         Rotate image (degrees clockwise)\n");
-   fprintf(stderr, "  -transpose     Transpose image\n");
-   fprintf(stderr, "  -transverse    Transverse transpose image\n");
-@@ -133,7 +135,9 @@
-   copyoption = JCOPYOPT_DEFAULT;
-   transformoption.transform = JXFORM_NONE;
-   transformoption.trim = FALSE;
-+  transformoption.perfect = FALSE;
-   transformoption.force_grayscale = FALSE;
-+  transformoption.crop = FALSE;
-   cinfo->err->trace_level = 0;
- 
-   /* Scan command line options, adjust parameters */
-@@ -160,7 +164,7 @@
-       exit(EXIT_FAILURE);
- #endif
- 
--    } else if (keymatch(arg, "copy", 1)) {
-+    } else if (keymatch(arg, "copy", 2)) {
-       /* Select which extra markers to copy. */
-       if (++argn >= argc)	/* advance to next argument */
- 	usage();
-@@ -173,6 +177,20 @@
-       } else
- 	usage();
- 
-+    } else if (keymatch(arg, "crop", 2)) {
-+      /* Perform lossless cropping. */
-+#if TRANSFORMS_SUPPORTED
-+      if (++argn >= argc)	/* advance to next argument */
-+	usage();
-+      if (! jtransform_parse_crop_spec(&transformoption, argv[argn])) {
-+	fprintf(stderr, "%s: bogus -crop argument '%s'\n",
-+		progname, argv[argn]);
-+	exit(EXIT_FAILURE);
-+      }
-+#else
-+      select_transform(JXFORM_NONE);	/* force an error */
-+#endif
-+
-     } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
-       /* Enable debug printouts. */
-       /* On first -d, print version identification */
-@@ -233,7 +251,12 @@
- 	usage();
-       outfilename = argv[argn];	/* save it away for later use */
- 
--    } else if (keymatch(arg, "progressive", 1)) {
-+    } else if (keymatch(arg, "perfect", 2)) {
-+      /* Fail if there is any partial edge MCUs that the transform can't
-+       * handle. */
-+      transformoption.perfect = TRUE;
-+
-+    } else if (keymatch(arg, "progressive", 2)) {
-       /* Select simple progressive mode. */
- #ifdef C_PROGRESSIVE_SUPPORTED
-       simple_progressive = TRUE;
-@@ -342,8 +365,10 @@
-   jvirt_barray_ptr * src_coef_arrays;
-   jvirt_barray_ptr * dst_coef_arrays;
-   int file_index;
--  FILE * input_file;
--  FILE * output_file;
-+  /* We assume all-in-memory processing and can therefore use only a
-+   * single file pointer for sequential input and output operation. 
-+   */
-+  FILE * fp;
- 
-   /* On Mac, fetch a command line. */
- #ifdef USE_CCOMMAND
-@@ -406,24 +431,13 @@
- 
-   /* Open the input file. */
-   if (file_index < argc) {
--    if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) {
--      fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]);
-+    if ((fp = fopen(argv[file_index], READ_BINARY)) == NULL) {
-+      fprintf(stderr, "%s: can't open %s for reading\n", progname, argv[file_index]);
-       exit(EXIT_FAILURE);
-     }
-   } else {
-     /* default input file is stdin */
--    input_file = read_stdin();
--  }
--
--  /* Open the output file. */
--  if (outfilename != NULL) {
--    if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) {
--      fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
--      exit(EXIT_FAILURE);
--    }
--  } else {
--    /* default output file is stdout */
--    output_file = write_stdout();
-+    fp = read_stdin();
-   }
- 
- #ifdef PROGRESS_REPORT
-@@ -431,7 +445,7 @@
- #endif
- 
-   /* Specify data source for decompression */
--  jpeg_stdio_src(&srcinfo, input_file);
-+  jpeg_stdio_src(&srcinfo, fp);
- 
-   /* Enable saving of extra markers that we want to copy */
-   jcopy_markers_setup(&srcinfo, copyoption);
-@@ -443,6 +457,15 @@
-    * jpeg_read_coefficients so that memory allocation will be done right.
-    */
- #if TRANSFORMS_SUPPORTED
-+  /* Fails right away if -perfect is given and transformation is not perfect.
-+   */
-+  if (transformoption.perfect &&
-+      !jtransform_perfect_transform(srcinfo.image_width, srcinfo.image_height,
-+      srcinfo.max_h_samp_factor * DCTSIZE, srcinfo.max_v_samp_factor * DCTSIZE,
-+      transformoption.transform)) {
-+    fprintf(stderr, "%s: transformation is not perfect\n", progname);
-+    exit(EXIT_FAILURE);
-+  }
-   jtransform_request_workspace(&srcinfo, &transformoption);
- #endif
- 
-@@ -463,11 +486,32 @@
-   dst_coef_arrays = src_coef_arrays;
- #endif
- 
-+  /* Close input file, if we opened it.
-+   * Note: we assume that jpeg_read_coefficients consumed all input
-+   * until JPEG_REACHED_EOI, and that jpeg_finish_decompress will
-+   * only consume more while (! cinfo->inputctl->eoi_reached).
-+   * We cannot call jpeg_finish_decompress here since we still need the
-+   * virtual arrays allocated from the source object for processing.
-+   */
-+  if (fp != stdin)
-+    fclose(fp);
-+
-+  /* Open the output file. */
-+  if (outfilename != NULL) {
-+    if ((fp = fopen(outfilename, WRITE_BINARY)) == NULL) {
-+      fprintf(stderr, "%s: can't open %s for writing\n", progname, outfilename);
-+      exit(EXIT_FAILURE);
-+    }
-+  } else {
-+    /* default output file is stdout */
-+    fp = write_stdout();
-+  }
-+
-   /* Adjust default compression parameters by re-parsing the options */
-   file_index = parse_switches(&dstinfo, argc, argv, 0, TRUE);
- 
-   /* Specify data destination for compression */
--  jpeg_stdio_dest(&dstinfo, output_file);
-+  jpeg_stdio_dest(&dstinfo, fp);
- 
-   /* Start compressor (note no image data is actually written here) */
-   jpeg_write_coefficients(&dstinfo, dst_coef_arrays);
-@@ -488,11 +532,9 @@
-   (void) jpeg_finish_decompress(&srcinfo);
-   jpeg_destroy_decompress(&srcinfo);
- 
--  /* Close files, if we opened them */
--  if (input_file != stdin)
--    fclose(input_file);
--  if (output_file != stdout)
--    fclose(output_file);
-+  /* Close output file, if we opened it */
-+  if (fp != stdout)
-+    fclose(fp);
- 
- #ifdef PROGRESS_REPORT
-   end_progress_monitor((j_common_ptr) &dstinfo);
-diff -urNad /home/bill/debian/libjpeg/libjpeg6b-6b/transupp.c libjpeg6b-6b/transupp.c
---- /home/bill/debian/libjpeg/libjpeg6b-6b/transupp.c	2003-09-22 18:15:49.000000000 +0200
-+++ libjpeg6b-6b/transupp.c	2003-09-22 18:16:28.000000000 +0200
-@@ -1,7 +1,7 @@
- /*
-  * transupp.c
-  *
-- * Copyright (C) 1997, Thomas G. Lane.
-+ * Copyright (C) 1997-2001, 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.
-  *
-@@ -20,6 +20,7 @@
- #include "jinclude.h"
- #include "jpeglib.h"
- #include "transupp.h"		/* My own external interface */
-+#include <ctype.h>		/* to declare isdigit() */
- 
- 
- #if TRANSFORMS_SUPPORTED
-@@ -28,7 +29,8 @@
-  * Lossless image transformation routines.  These routines work on DCT
-  * coefficient arrays and thus do not require any lossy decompression
-  * or recompression of the image.
-- * Thanks to Guido Vollbeding for the initial design and code of this feature.
-+ * Thanks to Guido Vollbeding for the initial design and code of this feature,
-+ * and to Ben Jackson for introducing the cropping feature.
-  *
-  * Horizontal flipping is done in-place, using a single top-to-bottom
-  * pass through the virtual source array.  It will thus be much the
-@@ -42,6 +44,13 @@
-  * arrays for most of the transforms.  That could result in much thrashing
-  * if the image is larger than main memory.
-  *
-+ * If cropping or trimming is involved, the destination arrays may be smaller
-+ * than the source arrays.  Note it is not possible to do horizontal flip
-+ * in-place when a nonzero Y crop offset is specified, since we'd have to move
-+ * data from one block row to another but the virtual array manager doesn't
-+ * guarantee we can touch more than one row at a time.  So in that case,
-+ * we have to use a separate destination array.
-+ *
-  * Some notes about the operating environment of the individual transform
-  * routines:
-  * 1. Both the source and destination virtual arrays are allocated from the
-@@ -54,20 +63,65 @@
-  *    and we may as well take that as the effective iMCU size.
-  * 4. When "trim" is in effect, the destination's dimensions will be the
-  *    trimmed values but the source's will be untrimmed.
-- * 5. All the routines assume that the source and destination buffers are
-+ * 5. When "crop" is in effect, the destination's dimensions will be the
-+ *    cropped values but the source's will be uncropped.  Each transform
-+ *    routine is responsible for picking up source data starting at the
-+ *    correct X and Y offset for the crop region.  (The X and Y offsets
-+ *    passed to the transform routines are measured in iMCU blocks of the
-+ *    destination.)
-+ * 6. All the routines assume that the source and destination buffers are
-  *    padded out to a full iMCU boundary.  This is true, although for the
-  *    source buffer it is an undocumented property of jdcoefct.c.
-- * Notes 2,3,4 boil down to this: generally we should use the destination's
-- * dimensions and ignore the source's.
-  */
- 
- 
- LOCAL(void)
--do_flip_h (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
--	   jvirt_barray_ptr *src_coef_arrays)
--/* Horizontal flip; done in-place, so no separate dest array is required */
-+do_crop (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
-+	 JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
-+	 jvirt_barray_ptr *src_coef_arrays,
-+	 jvirt_barray_ptr *dst_coef_arrays)
-+/* Crop.  This is only used when no rotate/flip is requested with the crop. */
- {
--  JDIMENSION MCU_cols, comp_width, blk_x, blk_y;
-+  JDIMENSION dst_blk_y, x_crop_blocks, y_crop_blocks;
-+  int ci, offset_y;
-+  JBLOCKARRAY src_buffer, dst_buffer;
-+  jpeg_component_info *compptr;
-+
-+  /* We simply have to copy the right amount of data (the destination's
-+   * image size) starting at the given X and Y offsets in the source.
-+   */
-+  for (ci = 0; ci < dstinfo->num_components; ci++) {
-+    compptr = dstinfo->comp_info + ci;
-+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
-+    y_crop_blocks = y_crop_offset * compptr->v_samp_factor;
-+    for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks;
-+	 dst_blk_y += compptr->v_samp_factor) {
-+      dst_buffer = (*srcinfo->mem->access_virt_barray)
-+	((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y,
-+	 (JDIMENSION) compptr->v_samp_factor, TRUE);
-+      src_buffer = (*srcinfo->mem->access_virt_barray)
-+	((j_common_ptr) srcinfo, src_coef_arrays[ci],
-+	 dst_blk_y + y_crop_blocks,
-+	 (JDIMENSION) compptr->v_samp_factor, FALSE);
-+      for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
-+	jcopy_block_row(src_buffer[offset_y] + x_crop_blocks,
-+			dst_buffer[offset_y],
-+			compptr->width_in_blocks);
-+      }
-+    }
-+  }
-+}
-+
-+
-+LOCAL(void)
-+do_flip_h_no_crop (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
-+		   JDIMENSION x_crop_offset,
-+		   jvirt_barray_ptr *src_coef_arrays)
-+/* Horizontal flip; done in-place, so no separate dest array is required.
-+ * NB: this only works when y_crop_offset is zero.
-+ */
-+{
-+  JDIMENSION MCU_cols, comp_width, blk_x, blk_y, x_crop_blocks;
-   int ci, k, offset_y;
-   JBLOCKARRAY buffer;
-   JCOEFPTR ptr1, ptr2;
-@@ -79,17 +133,19 @@
-    * mirroring by changing the signs of odd-numbered columns.
-    * Partial iMCUs at the right edge are left untouched.
-    */
--  MCU_cols = dstinfo->image_width / (dstinfo->max_h_samp_factor * DCTSIZE);
-+  MCU_cols = srcinfo->image_width / (dstinfo->max_h_samp_factor * DCTSIZE);
- 
-   for (ci = 0; ci < dstinfo->num_components; ci++) {
-     compptr = dstinfo->comp_info + ci;
-     comp_width = MCU_cols * compptr->h_samp_factor;
-+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
-     for (blk_y = 0; blk_y < compptr->height_in_blocks;
- 	 blk_y += compptr->v_samp_factor) {
-       buffer = (*srcinfo->mem->access_virt_barray)
- 	((j_common_ptr) srcinfo, src_coef_arrays[ci], blk_y,
- 	 (JDIMENSION) compptr->v_samp_factor, TRUE);
-       for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
-+	/* Do the mirroring */
- 	for (blk_x = 0; blk_x * 2 < comp_width; blk_x++) {
- 	  ptr1 = buffer[offset_y][blk_x];
- 	  ptr2 = buffer[offset_y][comp_width - blk_x - 1];
-@@ -105,6 +161,79 @@
- 	    *ptr2++ = -temp1;
- 	  }
- 	}
-+	if (x_crop_blocks > 0) {
-+	  /* Now left-justify the portion of the data to be kept.
-+	   * We can't use a single jcopy_block_row() call because that routine
-+	   * depends on memcpy(), whose behavior is unspecified for overlapping
-+	   * source and destination areas.  Sigh.
-+	   */
-+	  for (blk_x = 0; blk_x < compptr->width_in_blocks; blk_x++) {
-+	    jcopy_block_row(buffer[offset_y] + blk_x + x_crop_blocks,
-+			    buffer[offset_y] + blk_x,
-+			    (JDIMENSION) 1);
-+	  }
-+	}
-+      }
-+    }
-+  }
-+}
-+
-+
-+LOCAL(void)
-+do_flip_h (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
-+	   JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
-+	   jvirt_barray_ptr *src_coef_arrays,
-+	   jvirt_barray_ptr *dst_coef_arrays)
-+/* Horizontal flip in general cropping case */
-+{
-+  JDIMENSION MCU_cols, comp_width, dst_blk_x, dst_blk_y;
-+  JDIMENSION x_crop_blocks, y_crop_blocks;
-+  int ci, k, offset_y;
-+  JBLOCKARRAY src_buffer, dst_buffer;
-+  JBLOCKROW src_row_ptr, dst_row_ptr;
-+  JCOEFPTR src_ptr, dst_ptr;
-+  jpeg_component_info *compptr;
-+
-+  /* Here we must output into a separate array because we can't touch
-+   * different rows of a single virtual array simultaneously.  Otherwise,
-+   * this is essentially the same as the routine above.
-+   */
-+  MCU_cols = srcinfo->image_width / (dstinfo->max_h_samp_factor * DCTSIZE);
-+
-+  for (ci = 0; ci < dstinfo->num_components; ci++) {
-+    compptr = dstinfo->comp_info + ci;
-+    comp_width = MCU_cols * compptr->h_samp_factor;
-+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
-+    y_crop_blocks = y_crop_offset * compptr->v_samp_factor;
-+    for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks;
-+	 dst_blk_y += compptr->v_samp_factor) {
-+      dst_buffer = (*srcinfo->mem->access_virt_barray)
-+	((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y,
-+	 (JDIMENSION) compptr->v_samp_factor, TRUE);
-+      src_buffer = (*srcinfo->mem->access_virt_barray)
-+	((j_common_ptr) srcinfo, src_coef_arrays[ci],
-+	 dst_blk_y + y_crop_blocks,
-+	 (JDIMENSION) compptr->v_samp_factor, FALSE);
-+      for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
-+	dst_row_ptr = dst_buffer[offset_y];
-+	src_row_ptr = src_buffer[offset_y];
-+	for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks; dst_blk_x++) {
-+	  if (x_crop_blocks + dst_blk_x < comp_width) {
-+	    /* Do the mirrorable blocks */
-+	    dst_ptr = dst_row_ptr[dst_blk_x];
-+	    src_ptr = src_row_ptr[comp_width - x_crop_blocks - dst_blk_x - 1];
-+	    /* this unrolled loop doesn't need to know which row it's on... */
-+	    for (k = 0; k < DCTSIZE2; k += 2) {
-+	      *dst_ptr++ = *src_ptr++;	 /* copy even column */
-+	      *dst_ptr++ = - *src_ptr++; /* copy odd column with sign change */
-+	    }
-+	  } else {
-+	    /* Copy last partial block(s) verbatim */
-+	    jcopy_block_row(src_row_ptr + dst_blk_x + x_crop_blocks,
-+			    dst_row_ptr + dst_blk_x,
-+			    (JDIMENSION) 1);
-+	  }
-+	}
-       }
-     }
-   }
-@@ -113,11 +242,13 @@
- 
- LOCAL(void)
- do_flip_v (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
-+	   JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
- 	   jvirt_barray_ptr *src_coef_arrays,
- 	   jvirt_barray_ptr *dst_coef_arrays)
- /* Vertical flip */
- {
-   JDIMENSION MCU_rows, comp_height, dst_blk_x, dst_blk_y;
-+  JDIMENSION x_crop_blocks, y_crop_blocks;
-   int ci, i, j, offset_y;
-   JBLOCKARRAY src_buffer, dst_buffer;
-   JBLOCKROW src_row_ptr, dst_row_ptr;
-@@ -131,33 +262,38 @@
-    * of odd-numbered rows.
-    * Partial iMCUs at the bottom edge are copied verbatim.
-    */
--  MCU_rows = dstinfo->image_height / (dstinfo->max_v_samp_factor * DCTSIZE);
-+  MCU_rows = srcinfo->image_height / (dstinfo->max_v_samp_factor * DCTSIZE);
- 
-   for (ci = 0; ci < dstinfo->num_components; ci++) {
-     compptr = dstinfo->comp_info + ci;
-     comp_height = MCU_rows * compptr->v_samp_factor;
-+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
-+    y_crop_blocks = y_crop_offset * compptr->v_samp_factor;
-     for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks;
- 	 dst_blk_y += compptr->v_samp_factor) {
-       dst_buffer = (*srcinfo->mem->access_virt_barray)
- 	((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y,
- 	 (JDIMENSION) compptr->v_samp_factor, TRUE);
--      if (dst_blk_y < comp_height) {
-+      if (y_crop_blocks + dst_blk_y < comp_height) {
- 	/* Row is within the mirrorable area. */
- 	src_buffer = (*srcinfo->mem->access_virt_barray)
- 	  ((j_common_ptr) srcinfo, src_coef_arrays[ci],
--	   comp_height - dst_blk_y - (JDIMENSION) compptr->v_samp_factor,
-+	   comp_height - y_crop_blocks - dst_blk_y -
-+	   (JDIMENSION) compptr->v_samp_factor,
- 	   (JDIMENSION) compptr->v_samp_factor, FALSE);
-       } else {
- 	/* Bottom-edge blocks will be copied verbatim. */
- 	src_buffer = (*srcinfo->mem->access_virt_barray)
--	  ((j_common_ptr) srcinfo, src_coef_arrays[ci], dst_blk_y,
-+	  ((j_common_ptr) srcinfo, src_coef_arrays[ci],
-+	   dst_blk_y + y_crop_blocks,
- 	   (JDIMENSION) compptr->v_samp_factor, FALSE);
-       }
-       for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
--	if (dst_blk_y < comp_height) {
-+	if (y_crop_blocks + dst_blk_y < comp_height) {
- 	  /* Row is within the mirrorable area. */
- 	  dst_row_ptr = dst_buffer[offset_y];
- 	  src_row_ptr = src_buffer[compptr->v_samp_factor - offset_y - 1];
-+	  src_row_ptr += x_crop_blocks;
- 	  for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks;
- 	       dst_blk_x++) {
- 	    dst_ptr = dst_row_ptr[dst_blk_x];
-@@ -173,7 +309,8 @@
- 	  }
- 	} else {
- 	  /* Just copy row verbatim. */
--	  jcopy_block_row(src_buffer[offset_y], dst_buffer[offset_y],
-+	  jcopy_block_row(src_buffer[offset_y] + x_crop_blocks,
-+			  dst_buffer[offset_y],
- 			  compptr->width_in_blocks);
- 	}
-       }
-@@ -184,11 +321,12 @@
- 
- LOCAL(void)
- do_transpose (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
-+	      JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
- 	      jvirt_barray_ptr *src_coef_arrays,
- 	      jvirt_barray_ptr *dst_coef_arrays)
- /* Transpose source into destination */
- {
--  JDIMENSION dst_blk_x, dst_blk_y;
-+  JDIMENSION dst_blk_x, dst_blk_y, x_crop_blocks, y_crop_blocks;
-   int ci, i, j, offset_x, offset_y;
-   JBLOCKARRAY src_buffer, dst_buffer;
-   JCOEFPTR src_ptr, dst_ptr;
-@@ -201,6 +339,8 @@
-    */
-   for (ci = 0; ci < dstinfo->num_components; ci++) {
-     compptr = dstinfo->comp_info + ci;
-+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
-+    y_crop_blocks = y_crop_offset * compptr->v_samp_factor;
-     for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks;
- 	 dst_blk_y += compptr->v_samp_factor) {
-       dst_buffer = (*srcinfo->mem->access_virt_barray)
-@@ -210,11 +350,12 @@
- 	for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks;
- 	     dst_blk_x += compptr->h_samp_factor) {
- 	  src_buffer = (*srcinfo->mem->access_virt_barray)
--	    ((j_common_ptr) srcinfo, src_coef_arrays[ci], dst_blk_x,
-+	    ((j_common_ptr) srcinfo, src_coef_arrays[ci],
-+	     dst_blk_x + x_crop_blocks,
- 	     (JDIMENSION) compptr->h_samp_factor, FALSE);
- 	  for (offset_x = 0; offset_x < compptr->h_samp_factor; offset_x++) {
--	    src_ptr = src_buffer[offset_x][dst_blk_y + offset_y];
- 	    dst_ptr = dst_buffer[offset_y][dst_blk_x + offset_x];
-+	    src_ptr = src_buffer[offset_x][dst_blk_y + offset_y + y_crop_blocks];
- 	    for (i = 0; i < DCTSIZE; i++)
- 	      for (j = 0; j < DCTSIZE; j++)
- 		dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
-@@ -228,6 +369,7 @@
- 
- LOCAL(void)
- do_rot_90 (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
-+	   JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
- 	   jvirt_barray_ptr *src_coef_arrays,
- 	   jvirt_barray_ptr *dst_coef_arrays)
- /* 90 degree rotation is equivalent to
-@@ -237,6 +379,7 @@
-  */
- {
-   JDIMENSION MCU_cols, comp_width, dst_blk_x, dst_blk_y;
-+  JDIMENSION x_crop_blocks, y_crop_blocks;
-   int ci, i, j, offset_x, offset_y;
-   JBLOCKARRAY src_buffer, dst_buffer;
-   JCOEFPTR src_ptr, dst_ptr;
-@@ -246,11 +389,13 @@
-    * at the (output) right edge properly.  They just get transposed and
-    * not mirrored.
-    */
--  MCU_cols = dstinfo->image_width / (dstinfo->max_h_samp_factor * DCTSIZE);
-+  MCU_cols = srcinfo->image_height / (dstinfo->max_h_samp_factor * DCTSIZE);
- 
-   for (ci = 0; ci < dstinfo->num_components; ci++) {
-     compptr = dstinfo->comp_info + ci;
-     comp_width = MCU_cols * compptr->h_samp_factor;
-+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
-+    y_crop_blocks = y_crop_offset * compptr->v_samp_factor;
-     for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks;
- 	 dst_blk_y += compptr->v_samp_factor) {
-       dst_buffer = (*srcinfo->mem->access_virt_barray)
-@@ -259,15 +404,26 @@
-       for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
- 	for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks;
- 	     dst_blk_x += compptr->h_samp_factor) {
--	  src_buffer = (*srcinfo->mem->access_virt_barray)
--	    ((j_common_ptr) srcinfo, src_coef_arrays[ci], dst_blk_x,
--	     (JDIMENSION) compptr->h_samp_factor, FALSE);
-+	  if (x_crop_blocks + dst_blk_x < comp_width) {
-+	    /* Block is within the mirrorable area. */
-+	    src_buffer = (*srcinfo->mem->access_virt_barray)
-+	      ((j_common_ptr) srcinfo, src_coef_arrays[ci],
-+	       comp_width - x_crop_blocks - dst_blk_x -
-+	       (JDIMENSION) compptr->h_samp_factor,
-+	       (JDIMENSION) compptr->h_samp_factor, FALSE);
-+	  } else {
-+	    /* Edge blocks are transposed but not mirrored. */
-+	    src_buffer = (*srcinfo->mem->access_virt_barray)
-+	      ((j_common_ptr) srcinfo, src_coef_arrays[ci],
-+	       dst_blk_x + x_crop_blocks,
-+	       (JDIMENSION) compptr->h_samp_factor, FALSE);
-+	  }
- 	  for (offset_x = 0; offset_x < compptr->h_samp_factor; offset_x++) {
--	    src_ptr = src_buffer[offset_x][dst_blk_y + offset_y];
--	    if (dst_blk_x < comp_width) {
-+	    dst_ptr = dst_buffer[offset_y][dst_blk_x + offset_x];
-+	    if (x_crop_blocks + dst_blk_x < comp_width) {
- 	      /* Block is within the mirrorable area. */
--	      dst_ptr = dst_buffer[offset_y]
--		[comp_width - dst_blk_x - offset_x - 1];
-+	      src_ptr = src_buffer[compptr->h_samp_factor - offset_x - 1]
-+		[dst_blk_y + offset_y + y_crop_blocks];
- 	      for (i = 0; i < DCTSIZE; i++) {
- 		for (j = 0; j < DCTSIZE; j++)
- 		  dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
-@@ -277,7 +433,8 @@
- 	      }
- 	    } else {
- 	      /* Edge blocks are transposed but not mirrored. */
--	      dst_ptr = dst_buffer[offset_y][dst_blk_x + offset_x];
-+	      src_ptr = src_buffer[offset_x]
-+		[dst_blk_y + offset_y + y_crop_blocks];
- 	      for (i = 0; i < DCTSIZE; i++)
- 		for (j = 0; j < DCTSIZE; j++)
- 		  dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
-@@ -292,6 +449,7 @@
- 
- LOCAL(void)
- do_rot_270 (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
-+	    JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
- 	    jvirt_barray_ptr *src_coef_arrays,
- 	    jvirt_barray_ptr *dst_coef_arrays)
- /* 270 degree rotation is equivalent to
-@@ -301,6 +459,7 @@
-  */
- {
-   JDIMENSION MCU_rows, comp_height, dst_blk_x, dst_blk_y;
-+  JDIMENSION x_crop_blocks, y_crop_blocks;
-   int ci, i, j, offset_x, offset_y;
-   JBLOCKARRAY src_buffer, dst_buffer;
-   JCOEFPTR src_ptr, dst_ptr;
-@@ -310,11 +469,13 @@
-    * at the (output) bottom edge properly.  They just get transposed and
-    * not mirrored.
-    */
--  MCU_rows = dstinfo->image_height / (dstinfo->max_v_samp_factor * DCTSIZE);
-+  MCU_rows = srcinfo->image_width / (dstinfo->max_v_samp_factor * DCTSIZE);
- 
-   for (ci = 0; ci < dstinfo->num_components; ci++) {
-     compptr = dstinfo->comp_info + ci;
-     comp_height = MCU_rows * compptr->v_samp_factor;
-+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
-+    y_crop_blocks = y_crop_offset * compptr->v_samp_factor;
-     for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks;
- 	 dst_blk_y += compptr->v_samp_factor) {
-       dst_buffer = (*srcinfo->mem->access_virt_barray)
-@@ -324,14 +485,15 @@
- 	for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks;
- 	     dst_blk_x += compptr->h_samp_factor) {
- 	  src_buffer = (*srcinfo->mem->access_virt_barray)
--	    ((j_common_ptr) srcinfo, src_coef_arrays[ci], dst_blk_x,
-+	    ((j_common_ptr) srcinfo, src_coef_arrays[ci],
-+	     dst_blk_x + x_crop_blocks,
- 	     (JDIMENSION) compptr->h_samp_factor, FALSE);
- 	  for (offset_x = 0; offset_x < compptr->h_samp_factor; offset_x++) {
- 	    dst_ptr = dst_buffer[offset_y][dst_blk_x + offset_x];
--	    if (dst_blk_y < comp_height) {
-+	    if (y_crop_blocks + dst_blk_y < comp_height) {
- 	      /* Block is within the mirrorable area. */
- 	      src_ptr = src_buffer[offset_x]
--		[comp_height - dst_blk_y - offset_y - 1];
-+		[comp_height - y_crop_blocks - dst_blk_y - offset_y - 1];
- 	      for (i = 0; i < DCTSIZE; i++) {
- 		for (j = 0; j < DCTSIZE; j++) {
- 		  dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
-@@ -341,7 +503,8 @@
- 	      }
- 	    } else {
- 	      /* Edge blocks are transposed but not mirrored. */
--	      src_ptr = src_buffer[offset_x][dst_blk_y + offset_y];
-+	      src_ptr = src_buffer[offset_x]
-+		[dst_blk_y + offset_y + y_crop_blocks];
- 	      for (i = 0; i < DCTSIZE; i++)
- 		for (j = 0; j < DCTSIZE; j++)
- 		  dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
-@@ -356,6 +519,7 @@
- 
- LOCAL(void)
- do_rot_180 (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
-+	    JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
- 	    jvirt_barray_ptr *src_coef_arrays,
- 	    jvirt_barray_ptr *dst_coef_arrays)
- /* 180 degree rotation is equivalent to
-@@ -365,89 +529,93 @@
-  */
- {
-   JDIMENSION MCU_cols, MCU_rows, comp_width, comp_height, dst_blk_x, dst_blk_y;
-+  JDIMENSION x_crop_blocks, y_crop_blocks;
-   int ci, i, j, offset_y;
-   JBLOCKARRAY src_buffer, dst_buffer;
-   JBLOCKROW src_row_ptr, dst_row_ptr;
-   JCOEFPTR src_ptr, dst_ptr;
-   jpeg_component_info *compptr;
- 
--  MCU_cols = dstinfo->image_width / (dstinfo->max_h_samp_factor * DCTSIZE);
--  MCU_rows = dstinfo->image_height / (dstinfo->max_v_samp_factor * DCTSIZE);
-+  MCU_cols = srcinfo->image_width / (dstinfo->max_h_samp_factor * DCTSIZE);
-+  MCU_rows = srcinfo->image_height / (dstinfo->max_v_samp_factor * DCTSIZE);
- 
-   for (ci = 0; ci < dstinfo->num_components; ci++) {
-     compptr = dstinfo->comp_info + ci;
-     comp_width = MCU_cols * compptr->h_samp_factor;
-     comp_height = MCU_rows * compptr->v_samp_factor;
-+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
-+    y_crop_blocks = y_crop_offset * compptr->v_samp_factor;
-     for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks;
- 	 dst_blk_y += compptr->v_samp_factor) {
-       dst_buffer = (*srcinfo->mem->access_virt_barray)
- 	((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y,
- 	 (JDIMENSION) compptr->v_samp_factor, TRUE);
--      if (dst_blk_y < comp_height) {
-+      if (y_crop_blocks + dst_blk_y < comp_height) {
- 	/* Row is within the vertically mirrorable area. */
- 	src_buffer = (*srcinfo->mem->access_virt_barray)
- 	  ((j_common_ptr) srcinfo, src_coef_arrays[ci],
--	   comp_height - dst_blk_y - (JDIMENSION) compptr->v_samp_factor,
-+	   comp_height - y_crop_blocks - dst_blk_y -
-+	   (JDIMENSION) compptr->v_samp_factor,
- 	   (JDIMENSION) compptr->v_samp_factor, FALSE);
-       } else {
- 	/* Bottom-edge rows are only mirrored horizontally. */
- 	src_buffer = (*srcinfo->mem->access_virt_barray)
--	  ((j_common_ptr) srcinfo, src_coef_arrays[ci], dst_blk_y,
-+	  ((j_common_ptr) srcinfo, src_coef_arrays[ci],
-+	   dst_blk_y + y_crop_blocks,
- 	   (JDIMENSION) compptr->v_samp_factor, FALSE);
-       }
-       for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
--	if (dst_blk_y < comp_height) {
-+	dst_row_ptr = dst_buffer[offset_y];
-+	if (y_crop_blocks + dst_blk_y < comp_height) {
- 	  /* Row is within the mirrorable area. */
--	  dst_row_ptr = dst_buffer[offset_y];
- 	  src_row_ptr = src_buffer[compptr->v_samp_factor - offset_y - 1];
--	  /* Process the blocks that can be mirrored both ways. */
--	  for (dst_blk_x = 0; dst_blk_x < comp_width; dst_blk_x++) {
-+	  for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks; dst_blk_x++) {
- 	    dst_ptr = dst_row_ptr[dst_blk_x];
--	    src_ptr = src_row_ptr[comp_width - dst_blk_x - 1];
--	    for (i = 0; i < DCTSIZE; i += 2) {
--	      /* For even row, negate every odd column. */
--	      for (j = 0; j < DCTSIZE; j += 2) {
--		*dst_ptr++ = *src_ptr++;
--		*dst_ptr++ = - *src_ptr++;
-+	    if (x_crop_blocks + dst_blk_x < comp_width) {
-+	      /* Process the blocks that can be mirrored both ways. */
-+	      src_ptr = src_row_ptr[comp_width - x_crop_blocks - dst_blk_x - 1];
-+	      for (i = 0; i < DCTSIZE; i += 2) {
-+		/* For even row, negate every odd column. */
-+		for (j = 0; j < DCTSIZE; j += 2) {
-+		  *dst_ptr++ = *src_ptr++;
-+		  *dst_ptr++ = - *src_ptr++;
-+		}
-+		/* For odd row, negate every even column. */
-+		for (j = 0; j < DCTSIZE; j += 2) {
-+		  *dst_ptr++ = - *src_ptr++;
-+		  *dst_ptr++ = *src_ptr++;
-+		}
- 	      }
--	      /* For odd row, negate every even column. */
--	      for (j = 0; j < DCTSIZE; j += 2) {
--		*dst_ptr++ = - *src_ptr++;
--		*dst_ptr++ = *src_ptr++;
-+	    } else {
-+	      /* Any remaining right-edge blocks are only mirrored vertically. */
-+	      src_ptr = src_row_ptr[x_crop_blocks + dst_blk_x];
-+	      for (i = 0; i < DCTSIZE; i += 2) {
-+		for (j = 0; j < DCTSIZE; j++)
-+		  *dst_ptr++ = *src_ptr++;
-+		for (j = 0; j < DCTSIZE; j++)
-+		  *dst_ptr++ = - *src_ptr++;
- 	      }
- 	    }
- 	  }
--	  /* Any remaining right-edge blocks are only mirrored vertically. */
--	  for (; dst_blk_x < compptr->width_in_blocks; dst_blk_x++) {
--	    dst_ptr = dst_row_ptr[dst_blk_x];
--	    src_ptr = src_row_ptr[dst_blk_x];
--	    for (i = 0; i < DCTSIZE; i += 2) {
--	      for (j = 0; j < DCTSIZE; j++)
--		*dst_ptr++ = *src_ptr++;
--	      for (j = 0; j < DCTSIZE; j++)
--		*dst_ptr++ = - *src_ptr++;
--	    }
--	  }
- 	} else {
- 	  /* Remaining rows are just mirrored horizontally. */
--	  dst_row_ptr = dst_buffer[offset_y];
- 	  src_row_ptr = src_buffer[offset_y];
--	  /* Process the blocks that can be mirrored. */
--	  for (dst_blk_x = 0; dst_blk_x < comp_width; dst_blk_x++) {
--	    dst_ptr = dst_row_ptr[dst_blk_x];
--	    src_ptr = src_row_ptr[comp_width - dst_blk_x - 1];
--	    for (i = 0; i < DCTSIZE2; i += 2) {
--	      *dst_ptr++ = *src_ptr++;
--	      *dst_ptr++ = - *src_ptr++;
-+	  for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks; dst_blk_x++) {
-+	    if (x_crop_blocks + dst_blk_x < comp_width) {
-+	      /* Process the blocks that can be mirrored. */
-+	      dst_ptr = dst_row_ptr[dst_blk_x];
-+	      src_ptr = src_row_ptr[comp_width - x_crop_blocks - dst_blk_x - 1];
-+	      for (i = 0; i < DCTSIZE2; i += 2) {
-+		*dst_ptr++ = *src_ptr++;
-+		*dst_ptr++ = - *src_ptr++;
-+	      }
-+	    } else {
-+	      /* Any remaining right-edge blocks are only copied. */
-+	      jcopy_block_row(src_row_ptr + dst_blk_x + x_crop_blocks,
-+			      dst_row_ptr + dst_blk_x,
-+			      (JDIMENSION) 1);
- 	    }
- 	  }
--	  /* Any remaining right-edge blocks are only copied. */
--	  for (; dst_blk_x < compptr->width_in_blocks; dst_blk_x++) {
--	    dst_ptr = dst_row_ptr[dst_blk_x];
--	    src_ptr = src_row_ptr[dst_blk_x];
--	    for (i = 0; i < DCTSIZE2; i++)
--	      *dst_ptr++ = *src_ptr++;
--	  }
- 	}
-       }
-     }
-@@ -457,6 +625,7 @@
- 
- LOCAL(void)
- do_transverse (j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
-+	       JDIMENSION x_crop_offset, JDIMENSION y_crop_offset,
- 	       jvirt_barray_ptr *src_coef_arrays,
- 	       jvirt_barray_ptr *dst_coef_arrays)
- /* Transverse transpose is equivalent to
-@@ -470,18 +639,21 @@
-  */
- {
-   JDIMENSION MCU_cols, MCU_rows, comp_width, comp_height, dst_blk_x, dst_blk_y;
-+  JDIMENSION x_crop_blocks, y_crop_blocks;
-   int ci, i, j, offset_x, offset_y;
-   JBLOCKARRAY src_buffer, dst_buffer;
-   JCOEFPTR src_ptr, dst_ptr;
-   jpeg_component_info *compptr;
- 
--  MCU_cols = dstinfo->image_width / (dstinfo->max_h_samp_factor * DCTSIZE);
--  MCU_rows = dstinfo->image_height / (dstinfo->max_v_samp_factor * DCTSIZE);
-+  MCU_cols = srcinfo->image_height / (dstinfo->max_h_samp_factor * DCTSIZE);
-+  MCU_rows = srcinfo->image_width / (dstinfo->max_v_samp_factor * DCTSIZE);
- 
-   for (ci = 0; ci < dstinfo->num_components; ci++) {
-     compptr = dstinfo->comp_info + ci;
-     comp_width = MCU_cols * compptr->h_samp_factor;
-     comp_height = MCU_rows * compptr->v_samp_factor;
-+    x_crop_blocks = x_crop_offset * compptr->h_samp_factor;
-+    y_crop_blocks = y_crop_offset * compptr->v_samp_factor;
-     for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks;
- 	 dst_blk_y += compptr->v_samp_factor) {
-       dst_buffer = (*srcinfo->mem->access_virt_barray)
-@@ -490,17 +662,26 @@
-       for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) {
- 	for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks;
- 	     dst_blk_x += compptr->h_samp_factor) {
--	  src_buffer = (*srcinfo->mem->access_virt_barray)
--	    ((j_common_ptr) srcinfo, src_coef_arrays[ci], dst_blk_x,
--	     (JDIMENSION) compptr->h_samp_factor, FALSE);
-+	  if (x_crop_blocks + dst_blk_x < comp_width) {
-+	    /* Block is within the mirrorable area. */
-+	    src_buffer = (*srcinfo->mem->access_virt_barray)
-+	      ((j_common_ptr) srcinfo, src_coef_arrays[ci],
-+	       comp_width - x_crop_blocks - dst_blk_x -
-+	       (JDIMENSION) compptr->h_samp_factor,
-+	       (JDIMENSION) compptr->h_samp_factor, FALSE);
-+	  } else {
-+	    src_buffer = (*srcinfo->mem->access_virt_barray)
-+	      ((j_common_ptr) srcinfo, src_coef_arrays[ci],
-+	       dst_blk_x + x_crop_blocks,
-+	       (JDIMENSION) compptr->h_samp_factor, FALSE);
-+	  }
- 	  for (offset_x = 0; offset_x < compptr->h_samp_factor; offset_x++) {
--	    if (dst_blk_y < comp_height) {
--	      src_ptr = src_buffer[offset_x]
--		[comp_height - dst_blk_y - offset_y - 1];
--	      if (dst_blk_x < comp_width) {
-+	    dst_ptr = dst_buffer[offset_y][dst_blk_x + offset_x];
-+	    if (y_crop_blocks + dst_blk_y < comp_height) {
-+	      if (x_crop_blocks + dst_blk_x < comp_width) {
- 		/* Block is within the mirrorable area. */
--		dst_ptr = dst_buffer[offset_y]
--		  [comp_width - dst_blk_x - offset_x - 1];
-+		src_ptr = src_buffer[compptr->h_samp_factor - offset_x - 1]
-+		  [comp_height - y_crop_blocks - dst_blk_y - offset_y - 1];
- 		for (i = 0; i < DCTSIZE; i++) {
- 		  for (j = 0; j < DCTSIZE; j++) {
- 		    dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
-@@ -516,7 +697,8 @@
- 		}
- 	      } else {
- 		/* Right-edge blocks are mirrored in y only */
--		dst_ptr = dst_buffer[offset_y][dst_blk_x + offset_x];
-+		src_ptr = src_buffer[offset_x]
-+		  [comp_height - y_crop_blocks - dst_blk_y - offset_y - 1];
- 		for (i = 0; i < DCTSIZE; i++) {
- 		  for (j = 0; j < DCTSIZE; j++) {
- 		    dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
-@@ -526,11 +708,10 @@
- 		}
- 	      }
- 	    } else {
--	      src_ptr = src_buffer[offset_x][dst_blk_y + offset_y];
--	      if (dst_blk_x < comp_width) {
-+	      if (x_crop_blocks + dst_blk_x < comp_width) {
- 		/* Bottom-edge blocks are mirrored in x only */
--		dst_ptr = dst_buffer[offset_y]
--		  [comp_width - dst_blk_x - offset_x - 1];
-+		src_ptr = src_buffer[compptr->h_samp_factor - offset_x - 1]
-+		  [dst_blk_y + offset_y + y_crop_blocks];
- 		for (i = 0; i < DCTSIZE; i++) {
- 		  for (j = 0; j < DCTSIZE; j++)
- 		    dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
-@@ -540,7 +721,8 @@
- 		}
- 	      } else {
- 		/* At lower right corner, just transpose, no mirroring */
--		dst_ptr = dst_buffer[offset_y][dst_blk_x + offset_x];
-+		src_ptr = src_buffer[offset_x]
-+		  [dst_blk_y + offset_y + y_crop_blocks];
- 		for (i = 0; i < DCTSIZE; i++)
- 		  for (j = 0; j < DCTSIZE; j++)
- 		    dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j];
-@@ -554,8 +736,116 @@
- }
- 
- 
-+/* Parse an unsigned integer: subroutine for jtransform_parse_crop_spec.
-+ * Returns TRUE if valid integer found, FALSE if not.
-+ * *strptr is advanced over the digit string, and *result is set to its value.
-+ */
-+
-+LOCAL(boolean)
-+jt_read_integer (const char ** strptr, JDIMENSION * result)
-+{
-+  const char * ptr = *strptr;
-+  JDIMENSION val = 0;
-+
-+  for (; isdigit(*ptr); ptr++) {
-+    val = val * 10 + (JDIMENSION) (*ptr - '0');
-+  }
-+  *result = val;
-+  if (ptr == *strptr)
-+    return FALSE;		/* oops, no digits */
-+  *strptr = ptr;
-+  return TRUE;
-+}
-+
-+
-+/* Parse a crop specification (written in X11 geometry style).
-+ * The routine returns TRUE if the spec string is valid, FALSE if not.
-+ *
-+ * The crop spec string should have the format
-+ *	<width>x<height>{+-}<xoffset>{+-}<yoffset>
-+ * where width, height, xoffset, and yoffset are unsigned integers.
-+ * Each of the elements can be omitted to indicate a default value.
-+ * (A weakness of this style is that it is not possible to omit xoffset
-+ * while specifying yoffset, since they look alike.)
-+ *
-+ * This code is loosely based on XParseGeometry from the X11 distribution.
-+ */
-+
-+GLOBAL(boolean)
-+jtransform_parse_crop_spec (jpeg_transform_info *info, const char *spec)
-+{
-+  info->crop = FALSE;
-+  info->crop_width_set = JCROP_UNSET;
-+  info->crop_height_set = JCROP_UNSET;
-+  info->crop_xoffset_set = JCROP_UNSET;
-+  info->crop_yoffset_set = JCROP_UNSET;
-+
-+  if (isdigit(*spec)) {
-+    /* fetch width */
-+    if (! jt_read_integer(&spec, &info->crop_width))
-+      return FALSE;
-+    info->crop_width_set = JCROP_POS;
-+  }
-+  if (*spec == 'x' || *spec == 'X') {	
-+    /* fetch height */
-+    spec++;
-+    if (! jt_read_integer(&spec, &info->crop_height))
-+      return FALSE;
-+    info->crop_height_set = JCROP_POS;
-+  }
-+  if (*spec == '+' || *spec == '-') {
-+    /* fetch xoffset */
-+    info->crop_xoffset_set = (*spec == '-') ? JCROP_NEG : JCROP_POS;
-+    spec++;
-+    if (! jt_read_integer(&spec, &info->crop_xoffset))
-+      return FALSE;
-+  }
-+  if (*spec == '+' || *spec == '-') {
-+    /* fetch yoffset */
-+    info->crop_yoffset_set = (*spec == '-') ? JCROP_NEG : JCROP_POS;
-+    spec++;
-+    if (! jt_read_integer(&spec, &info->crop_yoffset))
-+      return FALSE;
-+  }
-+  /* We had better have gotten to the end of the string. */
-+  if (*spec != '\0')
-+    return FALSE;
-+  info->crop = TRUE;
-+  return TRUE;
-+}
-+
-+
-+/* Trim off any partial iMCUs on the indicated destination edge */
-+
-+LOCAL(void)
-+trim_right_edge (jpeg_transform_info *info, JDIMENSION full_width)
-+{
-+  JDIMENSION MCU_cols;
-+
-+  MCU_cols = info->output_width / (info->max_h_samp_factor * DCTSIZE);
-+  if (MCU_cols > 0 && info->x_crop_offset + MCU_cols ==
-+      full_width / (info->max_h_samp_factor * DCTSIZE))
-+    info->output_width = MCU_cols * (info->max_h_samp_factor * DCTSIZE);
-+}
-+
-+LOCAL(void)
-+trim_bottom_edge (jpeg_transform_info *info, JDIMENSION full_height)
-+{
-+  JDIMENSION MCU_rows;
-+
-+  MCU_rows = info->output_height / (info->max_v_samp_factor * DCTSIZE);
-+  if (MCU_rows > 0 && info->y_crop_offset + MCU_rows ==
-+      full_height / (info->max_v_samp_factor * DCTSIZE))
-+    info->output_height = MCU_rows * (info->max_v_samp_factor * DCTSIZE);
-+}
-+
-+
- /* Request any required workspace.
-  *
-+ * This routine figures out the size that the output image will be
-+ * (which implies that all the transform parameters must be set before
-+ * it is called).
-+ *
-  * We allocate the workspace virtual arrays from the source decompression
-  * object, so that all the arrays (both the original data and the workspace)
-  * will be taken into account while making memory management decisions.
-@@ -569,9 +859,13 @@
- 			      jpeg_transform_info *info)
- {
-   jvirt_barray_ptr *coef_arrays = NULL;
-+  boolean need_workspace, transpose_it;
-   jpeg_component_info *compptr;
--  int ci;
-+  JDIMENSION xoffset, yoffset, width_in_iMCUs, height_in_iMCUs;
-+  JDIMENSION width_in_blocks, height_in_blocks;
-+  int ci, h_samp_factor, v_samp_factor;
- 
-+  /* Determine number of components in output image */
-   if (info->force_grayscale &&
-       srcinfo->jpeg_color_space == JCS_YCbCr &&
-       srcinfo->num_components == 3) {
-@@ -581,55 +875,181 @@
-     /* Process all the components */
-     info->num_components = srcinfo->num_components;
-   }
-+  /* If there is only one output component, force the iMCU size to be 1;
-+   * else use the source iMCU size.  (This allows us to do the right thing
-+   * when reducing color to grayscale, and also provides a handy way of
-+   * cleaning up "funny" grayscale images whose sampling factors are not 1x1.)
-+   */
- 
-   switch (info->transform) {
-+  case JXFORM_TRANSPOSE:
-+  case JXFORM_TRANSVERSE:
-+  case JXFORM_ROT_90:
-+  case JXFORM_ROT_270:
-+    info->output_width = srcinfo->image_height;
-+    info->output_height = srcinfo->image_width;
-+    if (info->num_components == 1) {
-+      info->max_h_samp_factor = 1;
-+      info->max_v_samp_factor = 1;
-+    } else {
-+      info->max_h_samp_factor = srcinfo->max_v_samp_factor;
-+      info->max_v_samp_factor = srcinfo->max_h_samp_factor;
-+    }
-+    break;
-+  default:
-+    info->output_width = srcinfo->image_width;
-+    info->output_height = srcinfo->image_height;
-+    if (info->num_components == 1) {
-+      info->max_h_samp_factor = 1;
-+      info->max_v_samp_factor = 1;
-+    } else {
-+      info->max_h_samp_factor = srcinfo->max_h_samp_factor;
-+      info->max_v_samp_factor = srcinfo->max_v_samp_factor;
-+    }
-+    break;
-+  }
-+
-+  /* If cropping has been requested, compute the crop area's position and
-+   * dimensions, ensuring that its upper left corner falls at an iMCU boundary.
-+   */
-+  if (info->crop) {
-+    /* Insert default values for unset crop parameters */
-+    if (info->crop_xoffset_set == JCROP_UNSET)
-+      info->crop_xoffset = 0;	/* default to +0 */
-+    if (info->crop_yoffset_set == JCROP_UNSET)
-+      info->crop_yoffset = 0;	/* default to +0 */
-+    if (info->crop_xoffset >= info->output_width ||
-+	info->crop_yoffset >= info->output_height)
-+      ERREXIT(srcinfo, JERR_BAD_CROP_SPEC);
-+    if (info->crop_width_set == JCROP_UNSET)
-+      info->crop_width = info->output_width - info->crop_xoffset;
-+    if (info->crop_height_set == JCROP_UNSET)
-+      info->crop_height = info->output_height - info->crop_yoffset;
-+    /* Ensure parameters are valid */
-+    if (info->crop_width <= 0 || info->crop_width > info->output_width ||
-+	info->crop_height <= 0 || info->crop_height > info->output_height ||
-+	info->crop_xoffset > info->output_width - info->crop_width ||
-+	info->crop_yoffset > info->output_height - info->crop_height)
-+      ERREXIT(srcinfo, JERR_BAD_CROP_SPEC);
-+    /* Convert negative crop offsets into regular offsets */
-+    if (info->crop_xoffset_set == JCROP_NEG)
-+      xoffset = info->output_width - info->crop_width - info->crop_xoffset;
-+    else
-+      xoffset = info->crop_xoffset;
-+    if (info->crop_yoffset_set == JCROP_NEG)
-+      yoffset = info->output_height - info->crop_height - info->crop_yoffset;
-+    else
-+      yoffset = info->crop_yoffset;
-+    /* Now adjust so that upper left corner falls at an iMCU boundary */
-+    info->output_width =
-+      info->crop_width + (xoffset % (info->max_h_samp_factor * DCTSIZE));
-+    info->output_height =
-+      info->crop_height + (yoffset % (info->max_v_samp_factor * DCTSIZE));
-+    /* Save x/y offsets measured in iMCUs */
-+    info->x_crop_offset = xoffset / (info->max_h_samp_factor * DCTSIZE);
-+    info->y_crop_offset = yoffset / (info->max_v_samp_factor * DCTSIZE);
-+  } else {
-+    info->x_crop_offset = 0;
-+    info->y_crop_offset = 0;
-+  }
-+
-+  /* Figure out whether we need workspace arrays,
-+   * and if so whether they are transposed relative to the source.
-+   */
-+  need_workspace = FALSE;
-+  transpose_it = FALSE;
-+  switch (info->transform) {
-   case JXFORM_NONE:
-+    if (info->x_crop_offset != 0 || info->y_crop_offset != 0)
-+      need_workspace = TRUE;
-+    /* No workspace needed if neither cropping nor transforming */
-+    break;
-   case JXFORM_FLIP_H:
--    /* Don't need a workspace array */
-+    if (info->trim)
-+      trim_right_edge(info, srcinfo->image_width);
-+    if (info->y_crop_offset != 0)
-+      need_workspace = TRUE;
-+    /* do_flip_h_no_crop doesn't need a workspace array */
-     break;
-   case JXFORM_FLIP_V:
--  case JXFORM_ROT_180:
--    /* Need workspace arrays having same dimensions as source image.
--     * Note that we allocate arrays padded out to the next iMCU boundary,
--     * so that transform routines need not worry about missing edge blocks.
--     */
--    coef_arrays = (jvirt_barray_ptr *)
--      (*srcinfo->mem->alloc_small) ((j_common_ptr) srcinfo, JPOOL_IMAGE,
--	SIZEOF(jvirt_barray_ptr) * info->num_components);
--    for (ci = 0; ci < info->num_components; ci++) {
--      compptr = srcinfo->comp_info + ci;
--      coef_arrays[ci] = (*srcinfo->mem->request_virt_barray)
--	((j_common_ptr) srcinfo, JPOOL_IMAGE, FALSE,
--	 (JDIMENSION) jround_up((long) compptr->width_in_blocks,
--				(long) compptr->h_samp_factor),
--	 (JDIMENSION) jround_up((long) compptr->height_in_blocks,
--				(long) compptr->v_samp_factor),
--	 (JDIMENSION) compptr->v_samp_factor);
--    }
-+    if (info->trim)
-+      trim_bottom_edge(info, srcinfo->image_height);
-+    /* Need workspace arrays having same dimensions as source image. */
-+    need_workspace = TRUE;
-     break;
-   case JXFORM_TRANSPOSE:
-+    /* transpose does NOT have to trim anything */
-+    /* Need workspace arrays having transposed dimensions. */
-+    need_workspace = TRUE;
-+    transpose_it = TRUE;
-+    break;
-   case JXFORM_TRANSVERSE:
-+    if (info->trim) {
-+      trim_right_edge(info, srcinfo->image_height);
-+      trim_bottom_edge(info, srcinfo->image_width);
-+    }
-+    /* Need workspace arrays having transposed dimensions. */
-+    need_workspace = TRUE;
-+    transpose_it = TRUE;
-+    break;
-   case JXFORM_ROT_90:
-+    if (info->trim)
-+      trim_right_edge(info, srcinfo->image_height);
-+    /* Need workspace arrays having transposed dimensions. */
-+    need_workspace = TRUE;
-+    transpose_it = TRUE;
-+    break;
-+  case JXFORM_ROT_180:
-+    if (info->trim) {
-+      trim_right_edge(info, srcinfo->image_width);
-+      trim_bottom_edge(info, srcinfo->image_height);
-+    }
-+    /* Need workspace arrays having same dimensions as source image. */
-+    need_workspace = TRUE;
-+    break;
-   case JXFORM_ROT_270:
--    /* Need workspace arrays having transposed dimensions.
--     * Note that we allocate arrays padded out to the next iMCU boundary,
--     * so that transform routines need not worry about missing edge blocks.
--     */
-+    if (info->trim)
-+      trim_bottom_edge(info, srcinfo->image_width);
-+    /* Need workspace arrays having transposed dimensions. */
-+    need_workspace = TRUE;
-+    transpose_it = TRUE;
-+    break;
-+  }
-+
-+  /* Allocate workspace if needed.
-+   * Note that we allocate arrays padded out to the next iMCU boundary,
-+   * so that transform routines need not worry about missing edge blocks.
-+   */
-+  if (need_workspace) {
-     coef_arrays = (jvirt_barray_ptr *)
-       (*srcinfo->mem->alloc_small) ((j_common_ptr) srcinfo, JPOOL_IMAGE,
--	SIZEOF(jvirt_barray_ptr) * info->num_components);
-+		SIZEOF(jvirt_barray_ptr) * info->num_components);
-+    width_in_iMCUs = (JDIMENSION)
-+      jdiv_round_up((long) info->output_width,
-+		    (long) (info->max_h_samp_factor * DCTSIZE));
-+    height_in_iMCUs = (JDIMENSION)
-+      jdiv_round_up((long) info->output_height,
-+		    (long) (info->max_v_samp_factor * DCTSIZE));
-     for (ci = 0; ci < info->num_components; ci++) {
-       compptr = srcinfo->comp_info + ci;
-+      if (info->num_components == 1) {
-+	/* we're going to force samp factors to 1x1 in this case */
-+	h_samp_factor = v_samp_factor = 1;
-+      } else if (transpose_it) {
-+	h_samp_factor = compptr->v_samp_factor;
-+	v_samp_factor = compptr->h_samp_factor;
-+      } else {
-+	h_samp_factor = compptr->h_samp_factor;
-+	v_samp_factor = compptr->v_samp_factor;
-+      }
-+      width_in_blocks = width_in_iMCUs * h_samp_factor;
-+      height_in_blocks = height_in_iMCUs * v_samp_factor;
-       coef_arrays[ci] = (*srcinfo->mem->request_virt_barray)
- 	((j_common_ptr) srcinfo, JPOOL_IMAGE, FALSE,
--	 (JDIMENSION) jround_up((long) compptr->height_in_blocks,
--				(long) compptr->v_samp_factor),
--	 (JDIMENSION) jround_up((long) compptr->width_in_blocks,
--				(long) compptr->h_samp_factor),
--	 (JDIMENSION) compptr->h_samp_factor);
-+	 width_in_blocks, height_in_blocks, (JDIMENSION) v_samp_factor);
-     }
--    break;
-   }
-+
-   info->workspace_coef_arrays = coef_arrays;
- }
- 
-@@ -642,14 +1062,8 @@
-   int tblno, i, j, ci, itemp;
-   jpeg_component_info *compptr;
-   JQUANT_TBL *qtblptr;
--  JDIMENSION dtemp;
-   UINT16 qtemp;
- 
--  /* Transpose basic image dimensions */
--  dtemp = dstinfo->image_width;
--  dstinfo->image_width = dstinfo->image_height;
--  dstinfo->image_height = dtemp;
--
-   /* Transpose sampling factors */
-   for (ci = 0; ci < dstinfo->num_components; ci++) {
-     compptr = dstinfo->comp_info + ci;
-@@ -674,46 +1088,159 @@
- }
- 
- 
--/* Trim off any partial iMCUs on the indicated destination edge */
-+/* Adjust Exif image parameters.
-+ *
-+ * We try to adjust the Tags ExifImageWidth and ExifImageHeight if possible.
-+ */
- 
- LOCAL(void)
--trim_right_edge (j_compress_ptr dstinfo)
-+adjust_exif_parameters (JOCTET FAR * data, unsigned int length,
-+			JDIMENSION new_width, JDIMENSION new_height)
- {
--  int ci, max_h_samp_factor;
--  JDIMENSION MCU_cols;
-+  boolean is_motorola; /* Flag for byte order */
-+  unsigned int number_of_tags, tagnum;
-+  unsigned int firstoffset, offset;
-+  JDIMENSION new_value;
- 
--  /* We have to compute max_h_samp_factor ourselves,
--   * because it hasn't been set yet in the destination
--   * (and we don't want to use the source's value).
--   */
--  max_h_samp_factor = 1;
--  for (ci = 0; ci < dstinfo->num_components; ci++) {
--    int h_samp_factor = dstinfo->comp_info[ci].h_samp_factor;
--    max_h_samp_factor = MAX(max_h_samp_factor, h_samp_factor);
-+  if (length < 12) return; /* Length of an IFD entry */
-+
-+  /* Discover byte order */
-+  if (GETJOCTET(data[0]) == 0x49 && GETJOCTET(data[1]) == 0x49)
-+    is_motorola = FALSE;
-+  else if (GETJOCTET(data[0]) == 0x4D && GETJOCTET(data[1]) == 0x4D)
-+    is_motorola = TRUE;
-+  else
-+    return;
-+
-+  /* Check Tag Mark */
-+  if (is_motorola) {
-+    if (GETJOCTET(data[2]) != 0) return;
-+    if (GETJOCTET(data[3]) != 0x2A) return;
-+  } else {
-+    if (GETJOCTET(data[3]) != 0) return;
-+    if (GETJOCTET(data[2]) != 0x2A) return;
-   }
--  MCU_cols = dstinfo->image_width / (max_h_samp_factor * DCTSIZE);
--  if (MCU_cols > 0)		/* can't trim to 0 pixels */
--    dstinfo->image_width = MCU_cols * (max_h_samp_factor * DCTSIZE);
--}
- 
--LOCAL(void)
--trim_bottom_edge (j_compress_ptr dstinfo)
--{
--  int ci, max_v_samp_factor;
--  JDIMENSION MCU_rows;
-+  /* Get first IFD offset (offset to IFD0) */
-+  if (is_motorola) {
-+    if (GETJOCTET(data[4]) != 0) return;
-+    if (GETJOCTET(data[5]) != 0) return;
-+    firstoffset = GETJOCTET(data[6]);
-+    firstoffset <<= 8;
-+    firstoffset += GETJOCTET(data[7]);
-+  } else {
-+    if (GETJOCTET(data[7]) != 0) return;
-+    if (GETJOCTET(data[6]) != 0) return;
-+    firstoffset = GETJOCTET(data[5]);
-+    firstoffset <<= 8;
-+    firstoffset += GETJOCTET(data[4]);
-+  }
-+  if (firstoffset > length - 2) return; /* check end of data segment */
- 
--  /* We have to compute max_v_samp_factor ourselves,
--   * because it hasn't been set yet in the destination
--   * (and we don't want to use the source's value).
--   */
--  max_v_samp_factor = 1;
--  for (ci = 0; ci < dstinfo->num_components; ci++) {
--    int v_samp_factor = dstinfo->comp_info[ci].v_samp_factor;
--    max_v_samp_factor = MAX(max_v_samp_factor, v_samp_factor);
-+  /* Get the number of directory entries contained in this IFD */
-+  if (is_motorola) {
-+    number_of_tags = GETJOCTET(data[firstoffset]);
-+    number_of_tags <<= 8;
-+    number_of_tags += GETJOCTET(data[firstoffset+1]);
-+  } else {
-+    number_of_tags = GETJOCTET(data[firstoffset+1]);
-+    number_of_tags <<= 8;
-+    number_of_tags += GETJOCTET(data[firstoffset]);
-   }
--  MCU_rows = dstinfo->image_height / (max_v_samp_factor * DCTSIZE);
--  if (MCU_rows > 0)		/* can't trim to 0 pixels */
--    dstinfo->image_height = MCU_rows * (max_v_samp_factor * DCTSIZE);
-+  if (number_of_tags == 0) return;
-+  firstoffset += 2;
-+
-+  /* Search for ExifSubIFD offset Tag in IFD0 */
-+  for (;;) {
-+    if (firstoffset > length - 12) return; /* check end of data segment */
-+    /* Get Tag number */
-+    if (is_motorola) {
-+      tagnum = GETJOCTET(data[firstoffset]);
-+      tagnum <<= 8;
-+      tagnum += GETJOCTET(data[firstoffset+1]);
-+    } else {
-+      tagnum = GETJOCTET(data[firstoffset+1]);
-+      tagnum <<= 8;
-+      tagnum += GETJOCTET(data[firstoffset]);
-+    }
-+    if (tagnum == 0x8769) break; /* found ExifSubIFD offset Tag */
-+    if (--number_of_tags == 0) return;
-+    firstoffset += 12;
-+  }
-+
-+  /* Get the ExifSubIFD offset */
-+  if (is_motorola) {
-+    if (GETJOCTET(data[firstoffset+8]) != 0) return;
-+    if (GETJOCTET(data[firstoffset+9]) != 0) return;
-+    offset = GETJOCTET(data[firstoffset+10]);
-+    offset <<= 8;
-+    offset += GETJOCTET(data[firstoffset+11]);
-+  } else {
-+    if (GETJOCTET(data[firstoffset+11]) != 0) return;
-+    if (GETJOCTET(data[firstoffset+10]) != 0) return;
-+    offset = GETJOCTET(data[firstoffset+9]);
-+    offset <<= 8;
-+    offset += GETJOCTET(data[firstoffset+8]);
-+  }
-+  if (offset > length - 2) return; /* check end of data segment */
-+
-+  /* Get the number of directory entries contained in this SubIFD */
-+  if (is_motorola) {
-+    number_of_tags = GETJOCTET(data[offset]);
-+    number_of_tags <<= 8;
-+    number_of_tags += GETJOCTET(data[offset+1]);
-+  } else {
-+    number_of_tags = GETJOCTET(data[offset+1]);
-+    number_of_tags <<= 8;
-+    number_of_tags += GETJOCTET(data[offset]);
-+  }
-+  if (number_of_tags < 2) return;
-+  offset += 2;
-+
-+  /* Search for ExifImageWidth and ExifImageHeight Tags in this SubIFD */
-+  do {
-+    if (offset > length - 12) return; /* check end of data segment */
-+    /* Get Tag number */
-+    if (is_motorola) {
-+      tagnum = GETJOCTET(data[offset]);
-+      tagnum <<= 8;
-+      tagnum += GETJOCTET(data[offset+1]);
-+    } else {
-+      tagnum = GETJOCTET(data[offset+1]);
-+      tagnum <<= 8;
-+      tagnum += GETJOCTET(data[offset]);
-+    }
-+    if (tagnum == 0xA002 || tagnum == 0xA003) {
-+      if (tagnum == 0xA002)
-+	new_value = new_width; /* ExifImageWidth Tag */
-+      else
-+	new_value = new_height; /* ExifImageHeight Tag */
-+      if (is_motorola) {
-+	data[offset+2] = 0; /* Format = unsigned long (4 octets) */
-+	data[offset+3] = 4;
-+	data[offset+4] = 0; /* Number Of Components = 1 */
-+	data[offset+5] = 0;
-+	data[offset+6] = 0;
-+	data[offset+7] = 1;
-+	data[offset+8] = 0;
-+	data[offset+9] = 0;
-+	data[offset+10] = (JOCTET)((new_value >> 8) & 0xFF);
-+	data[offset+11] = (JOCTET)(new_value & 0xFF);
-+      } else {
-+	data[offset+2] = 4; /* Format = unsigned long (4 octets) */
-+	data[offset+3] = 0;
-+	data[offset+4] = 1; /* Number Of Components = 1 */
-+	data[offset+5] = 0;
-+	data[offset+6] = 0;
-+	data[offset+7] = 0;
-+	data[offset+8] = (JOCTET)(new_value & 0xFF);
-+	data[offset+9] = (JOCTET)((new_value >> 8) & 0xFF);
-+	data[offset+10] = 0;
-+	data[offset+11] = 0;
-+      }
-+    }
-+    offset += 12;
-+  } while (--number_of_tags);
- }
- 
- 
-@@ -736,18 +1263,22 @@
- {
-   /* If force-to-grayscale is requested, adjust destination parameters */
-   if (info->force_grayscale) {
--    /* We use jpeg_set_colorspace to make sure subsidiary settings get fixed
--     * properly.  Among other things, the target h_samp_factor & v_samp_factor
--     * will get set to 1, which typically won't match the source.
--     * In fact we do this even if the source is already grayscale; that
--     * provides an easy way of coercing a grayscale JPEG with funny sampling
--     * factors to the customary 1,1.  (Some decoders fail on other factors.)
-+    /* First, ensure we have YCbCr or grayscale data, and that the source's
-+     * Y channel is full resolution.  (No reasonable person would make Y
-+     * be less than full resolution, so actually coping with that case
-+     * isn't worth extra code space.  But we check it to avoid crashing.)
-      */
--    if ((dstinfo->jpeg_color_space == JCS_YCbCr &&
--	 dstinfo->num_components == 3) ||
--	(dstinfo->jpeg_color_space == JCS_GRAYSCALE &&
--	 dstinfo->num_components == 1)) {
--      /* We have to preserve the source's quantization table number. */
-+    if (((dstinfo->jpeg_color_space == JCS_YCbCr &&
-+	  dstinfo->num_components == 3) ||
-+	 (dstinfo->jpeg_color_space == JCS_GRAYSCALE &&
-+	  dstinfo->num_components == 1)) &&
-+	srcinfo->comp_info[0].h_samp_factor == srcinfo->max_h_samp_factor &&
-+	srcinfo->comp_info[0].v_samp_factor == srcinfo->max_v_samp_factor) {
-+      /* We use jpeg_set_colorspace to make sure subsidiary settings get fixed
-+       * properly.  Among other things, it sets the target h_samp_factor &
-+       * v_samp_factor to 1, which typically won't match the source.
-+       * We have to preserve the source's quantization table number, however.
-+       */
-       int sv_quant_tbl_no = dstinfo->comp_info[0].quant_tbl_no;
-       jpeg_set_colorspace(dstinfo, JCS_GRAYSCALE);
-       dstinfo->comp_info[0].quant_tbl_no = sv_quant_tbl_no;
-@@ -755,50 +1286,52 @@
-       /* Sorry, can't do it */
-       ERREXIT(dstinfo, JERR_CONVERSION_NOTIMPL);
-     }
-+  } else if (info->num_components == 1) {
-+    /* For a single-component source, we force the destination sampling factors
-+     * to 1x1, with or without force_grayscale.  This is useful because some
-+     * decoders choke on grayscale images with other sampling factors.
-+     */
-+    dstinfo->comp_info[0].h_samp_factor = 1;
-+    dstinfo->comp_info[0].v_samp_factor = 1;
-   }
- 
--  /* Correct the destination's image dimensions etc if necessary */
-+  /* Correct the destination's image dimensions as necessary
-+   * for crop and rotate/flip operations.
-+   */
-+  dstinfo->image_width = info->output_width;
-+  dstinfo->image_height = info->output_height;
-+
-+  /* Transpose destination image parameters */
-   switch (info->transform) {
--  case JXFORM_NONE:
--    /* Nothing to do */
--    break;
--  case JXFORM_FLIP_H:
--    if (info->trim)
--      trim_right_edge(dstinfo);
--    break;
--  case JXFORM_FLIP_V:
--    if (info->trim)
--      trim_bottom_edge(dstinfo);
--    break;
-   case JXFORM_TRANSPOSE:
--    transpose_critical_parameters(dstinfo);
--    /* transpose does NOT have to trim anything */
--    break;
-   case JXFORM_TRANSVERSE:
--    transpose_critical_parameters(dstinfo);
--    if (info->trim) {
--      trim_right_edge(dstinfo);
--      trim_bottom_edge(dstinfo);
--    }
--    break;
-   case JXFORM_ROT_90:
--    transpose_critical_parameters(dstinfo);
--    if (info->trim)
--      trim_right_edge(dstinfo);
--    break;
--  case JXFORM_ROT_180:
--    if (info->trim) {
--      trim_right_edge(dstinfo);
--      trim_bottom_edge(dstinfo);
--    }
--    break;
-   case JXFORM_ROT_270:
-     transpose_critical_parameters(dstinfo);
--    if (info->trim)
--      trim_bottom_edge(dstinfo);
-     break;
-   }
- 
-+  /* Adjust Exif properties */
-+  if (srcinfo->marker_list != NULL &&
-+      srcinfo->marker_list->marker == JPEG_APP0+1 &&
-+      srcinfo->marker_list->data_length >= 6 &&
-+      GETJOCTET(srcinfo->marker_list->data[0]) == 0x45 &&
-+      GETJOCTET(srcinfo->marker_list->data[1]) == 0x78 &&
-+      GETJOCTET(srcinfo->marker_list->data[2]) == 0x69 &&
-+      GETJOCTET(srcinfo->marker_list->data[3]) == 0x66 &&
-+      GETJOCTET(srcinfo->marker_list->data[4]) == 0 &&
-+      GETJOCTET(srcinfo->marker_list->data[5]) == 0) {
-+    /* Suppress output of JFIF marker */
-+    dstinfo->write_JFIF_header = FALSE;
-+    /* Adjust Exif image parameters */
-+    if (dstinfo->image_width != srcinfo->image_width ||
-+	dstinfo->image_height != srcinfo->image_height)
-+      /* Align data segment to start of TIFF structure for parsing */
-+      adjust_exif_parameters(srcinfo->marker_list->data + 6,
-+	srcinfo->marker_list->data_length - 6,
-+	dstinfo->image_width, dstinfo->image_height);
-+  }
-+
-   /* Return the appropriate output data set */
-   if (info->workspace_coef_arrays != NULL)
-     return info->workspace_coef_arrays;
-@@ -816,38 +1349,106 @@
-  */
- 
- GLOBAL(void)
--jtransform_execute_transformation (j_decompress_ptr srcinfo,
--				   j_compress_ptr dstinfo,
--				   jvirt_barray_ptr *src_coef_arrays,
--				   jpeg_transform_info *info)
-+jtransform_execute_transform (j_decompress_ptr srcinfo,
-+			      j_compress_ptr dstinfo,
-+			      jvirt_barray_ptr *src_coef_arrays,
-+			      jpeg_transform_info *info)
- {
-   jvirt_barray_ptr *dst_coef_arrays = info->workspace_coef_arrays;
- 
-+  /* Note: conditions tested here should match those in switch statement
-+   * in jtransform_request_workspace()
-+   */
-   switch (info->transform) {
-   case JXFORM_NONE:
-+    if (info->x_crop_offset != 0 || info->y_crop_offset != 0)
-+      do_crop(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
-+	      src_coef_arrays, dst_coef_arrays);
-     break;
-   case JXFORM_FLIP_H:
--    do_flip_h(srcinfo, dstinfo, src_coef_arrays);
-+    if (info->y_crop_offset != 0)
-+      do_flip_h(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
-+		src_coef_arrays, dst_coef_arrays);
-+    else
-+      do_flip_h_no_crop(srcinfo, dstinfo, info->x_crop_offset,
-+			src_coef_arrays);
-     break;
-   case JXFORM_FLIP_V:
--    do_flip_v(srcinfo, dstinfo, src_coef_arrays, dst_coef_arrays);
-+    do_flip_v(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
-+	      src_coef_arrays, dst_coef_arrays);
-     break;
-   case JXFORM_TRANSPOSE:
--    do_transpose(srcinfo, dstinfo, src_coef_arrays, dst_coef_arrays);
-+    do_transpose(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
-+		 src_coef_arrays, dst_coef_arrays);
-     break;
-   case JXFORM_TRANSVERSE:
--    do_transverse(srcinfo, dstinfo, src_coef_arrays, dst_coef_arrays);
-+    do_transverse(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
-+		  src_coef_arrays, dst_coef_arrays);
-     break;
-   case JXFORM_ROT_90:
--    do_rot_90(srcinfo, dstinfo, src_coef_arrays, dst_coef_arrays);
-+    do_rot_90(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
-+	      src_coef_arrays, dst_coef_arrays);
-     break;
-   case JXFORM_ROT_180:
--    do_rot_180(srcinfo, dstinfo, src_coef_arrays, dst_coef_arrays);
-+    do_rot_180(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
-+	       src_coef_arrays, dst_coef_arrays);
-     break;
-   case JXFORM_ROT_270:
--    do_rot_270(srcinfo, dstinfo, src_coef_arrays, dst_coef_arrays);
-+    do_rot_270(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset,
-+	       src_coef_arrays, dst_coef_arrays);
-+    break;
-+  }
-+}
-+
-+/* jtransform_perfect_transform
-+ *
-+ * Determine whether lossless transformation is perfectly
-+ * possible for a specified image and transformation.
-+ *
-+ * Inputs:
-+ *   image_width, image_height: source image dimensions.
-+ *   MCU_width, MCU_height: pixel dimensions of MCU.
-+ *   transform: transformation identifier.
-+ * Parameter sources from initialized jpeg_struct
-+ * (after reading source header):
-+ *   image_width = cinfo.image_width
-+ *   image_height = cinfo.image_height
-+ *   MCU_width = cinfo.max_h_samp_factor * DCTSIZE
-+ *   MCU_height = cinfo.max_v_samp_factor * DCTSIZE
-+ * Result:
-+ *   TRUE = perfect transformation possible
-+ *   FALSE = perfect transformation not possible
-+ *           (may use custom action then)
-+ */
-+
-+GLOBAL(boolean)
-+jtransform_perfect_transform(JDIMENSION image_width, JDIMENSION image_height,
-+			     int MCU_width, int MCU_height,
-+			     JXFORM_CODE transform)
-+{
-+  boolean result = TRUE; /* initialize TRUE */
-+
-+  switch (transform) {
-+  case JXFORM_FLIP_H:
-+  case JXFORM_ROT_270:
-+    if (image_width % (JDIMENSION) MCU_width)
-+      result = FALSE;
-+    break;
-+  case JXFORM_FLIP_V:
-+  case JXFORM_ROT_90:
-+    if (image_height % (JDIMENSION) MCU_height)
-+      result = FALSE;
-+    break;
-+  case JXFORM_TRANSVERSE:
-+  case JXFORM_ROT_180:
-+    if (image_width % (JDIMENSION) MCU_width)
-+      result = FALSE;
-+    if (image_height % (JDIMENSION) MCU_height)
-+      result = FALSE;
-     break;
-   }
-+
-+  return result;
- }
- 
- #endif /* TRANSFORMS_SUPPORTED */
-diff -urNad /home/bill/debian/libjpeg/libjpeg6b-6b/transupp.h libjpeg6b-6b/transupp.h
---- /home/bill/debian/libjpeg/libjpeg6b-6b/transupp.h	2003-09-22 18:15:49.000000000 +0200
-+++ libjpeg6b-6b/transupp.h	2003-09-22 18:16:16.000000000 +0200
-@@ -1,7 +1,7 @@
- /*
-  * transupp.h
-  *
-- * Copyright (C) 1997, Thomas G. Lane.
-+ * Copyright (C) 1997-2001, 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.
-  *
-@@ -22,32 +22,6 @@
- #define TRANSFORMS_SUPPORTED 1		/* 0 disables transform code */
- #endif
- 
--/* Short forms of external names for systems with brain-damaged linkers. */
--
--#ifdef NEED_SHORT_EXTERNAL_NAMES
--#define jtransform_request_workspace		jTrRequest
--#define jtransform_adjust_parameters		jTrAdjust
--#define jtransform_execute_transformation	jTrExec
--#define jcopy_markers_setup			jCMrkSetup
--#define jcopy_markers_execute			jCMrkExec
--#endif /* NEED_SHORT_EXTERNAL_NAMES */
--
--
--/*
-- * Codes for supported types of image transformations.
-- */
--
--typedef enum {
--	JXFORM_NONE,		/* no transformation */
--	JXFORM_FLIP_H,		/* horizontal flip */
--	JXFORM_FLIP_V,		/* vertical flip */
--	JXFORM_TRANSPOSE,	/* transpose across UL-to-LR axis */
--	JXFORM_TRANSVERSE,	/* transpose across UR-to-LL axis */
--	JXFORM_ROT_90,		/* 90-degree clockwise rotation */
--	JXFORM_ROT_180,		/* 180-degree rotation */
--	JXFORM_ROT_270		/* 270-degree clockwise (or 90 ccw) */
--} JXFORM_CODE;
--
- /*
-  * Although rotating and flipping data expressed as DCT coefficients is not
-  * hard, there is an asymmetry in the JPEG format specification for images
-@@ -75,6 +49,19 @@
-  * (For example, -rot 270 -trim trims only the bottom edge, but -rot 90 -trim
-  * followed by -rot 180 -trim trims both edges.)
-  *
-+ * We also offer a lossless-crop option, which discards data outside a given
-+ * image region but losslessly preserves what is inside.  Like the rotate and
-+ * flip transforms, lossless crop is restricted by the JPEG format: the upper
-+ * left corner of the selected region must fall on an iMCU boundary.  If this
-+ * does not hold for the given crop parameters, we silently move the upper left
-+ * corner up and/or left to make it so, simultaneously increasing the region
-+ * dimensions to keep the lower right crop corner unchanged.  (Thus, the
-+ * output image covers at least the requested region, but may cover more.)
-+ *
-+ * If both crop and a rotate/flip transform are requested, the crop is applied
-+ * last --- that is, the crop region is specified in terms of the destination
-+ * image.
-+ *
-  * We also offer a "force to grayscale" option, which simply discards the
-  * chrominance channels of a YCbCr image.  This is lossless in the sense that
-  * the luminance channel is preserved exactly.  It's not the same kind of
-@@ -83,20 +70,89 @@
-  * be aware of the option to know how many components to work on.
-  */
- 
-+
-+/* Short forms of external names for systems with brain-damaged linkers. */
-+
-+#ifdef NEED_SHORT_EXTERNAL_NAMES
-+#define jtransform_parse_crop_spec	jTrParCrop
-+#define jtransform_request_workspace	jTrRequest
-+#define jtransform_adjust_parameters	jTrAdjust
-+#define jtransform_execute_transform	jTrExec
-+#define jtransform_perfect_transform	jTrPerfect
-+#define jcopy_markers_setup		jCMrkSetup
-+#define jcopy_markers_execute		jCMrkExec
-+#endif /* NEED_SHORT_EXTERNAL_NAMES */
-+
-+
-+/*
-+ * Codes for supported types of image transformations.
-+ */
-+
-+typedef enum {
-+	JXFORM_NONE,		/* no transformation */
-+	JXFORM_FLIP_H,		/* horizontal flip */
-+	JXFORM_FLIP_V,		/* vertical flip */
-+	JXFORM_TRANSPOSE,	/* transpose across UL-to-LR axis */
-+	JXFORM_TRANSVERSE,	/* transpose across UR-to-LL axis */
-+	JXFORM_ROT_90,		/* 90-degree clockwise rotation */
-+	JXFORM_ROT_180,		/* 180-degree rotation */
-+	JXFORM_ROT_270		/* 270-degree clockwise (or 90 ccw) */
-+} JXFORM_CODE;
-+
-+/*
-+ * Codes for crop parameters, which can individually be unspecified,
-+ * positive, or negative.  (Negative width or height makes no sense, though.)
-+ */
-+
-+typedef enum {
-+	JCROP_UNSET,
-+	JCROP_POS,
-+	JCROP_NEG
-+} JCROP_CODE;
-+
-+/*
-+ * Transform parameters struct.
-+ * NB: application must not change any elements of this struct after
-+ * calling jtransform_request_workspace.
-+ */
-+
- typedef struct {
-   /* Options: set by caller */
-   JXFORM_CODE transform;	/* image transform operator */
-+  boolean perfect;		/* if TRUE, fail if partial MCUs are requested */
-   boolean trim;			/* if TRUE, trim partial MCUs as needed */
-   boolean force_grayscale;	/* if TRUE, convert color image to grayscale */
-+  boolean crop;			/* if TRUE, crop source image */
-+
-+  /* Crop parameters: application need not set these unless crop is TRUE.
-+   * These can be filled in by jtransform_parse_crop_spec().
-+   */
-+  JDIMENSION crop_width;	/* Width of selected region */
-+  JCROP_CODE crop_width_set;
-+  JDIMENSION crop_height;	/* Height of selected region */
-+  JCROP_CODE crop_height_set;
-+  JDIMENSION crop_xoffset;	/* X offset of selected region */
-+  JCROP_CODE crop_xoffset_set;	/* (negative measures from right edge) */
-+  JDIMENSION crop_yoffset;	/* Y offset of selected region */
-+  JCROP_CODE crop_yoffset_set;	/* (negative measures from bottom edge) */
- 
-   /* Internal workspace: caller should not touch these */
-   int num_components;		/* # of components in workspace */
-   jvirt_barray_ptr * workspace_coef_arrays; /* workspace for transformations */
-+  JDIMENSION output_width;	/* cropped destination dimensions */
-+  JDIMENSION output_height;
-+  JDIMENSION x_crop_offset;	/* destination crop offsets measured in iMCUs */
-+  JDIMENSION y_crop_offset;
-+  int max_h_samp_factor;	/* destination iMCU size */
-+  int max_v_samp_factor;
- } jpeg_transform_info;
- 
- 
- #if TRANSFORMS_SUPPORTED
- 
-+/* Parse a crop specification (written in X11 geometry style) */
-+EXTERN(boolean) jtransform_parse_crop_spec
-+	JPP((jpeg_transform_info *info, const char *spec));
- /* Request any required workspace */
- EXTERN(void) jtransform_request_workspace
- 	JPP((j_decompress_ptr srcinfo, jpeg_transform_info *info));
-@@ -106,10 +162,24 @@
- 	     jvirt_barray_ptr *src_coef_arrays,
- 	     jpeg_transform_info *info));
- /* Execute the actual transformation, if any */
--EXTERN(void) jtransform_execute_transformation
-+EXTERN(void) jtransform_execute_transform
- 	JPP((j_decompress_ptr srcinfo, j_compress_ptr dstinfo,
- 	     jvirt_barray_ptr *src_coef_arrays,
- 	     jpeg_transform_info *info));
-+/* Determine whether lossless transformation is perfectly
-+ * possible for a specified image and transformation.
-+ */
-+EXTERN(boolean) jtransform_perfect_transform
-+	JPP((JDIMENSION image_width, JDIMENSION image_height,
-+	     int MCU_width, int MCU_height,
-+	     JXFORM_CODE transform));
-+
-+/* jtransform_execute_transform used to be called
-+ * jtransform_execute_transformation, but some compilers complain about
-+ * routine names that long.  This macro is here to avoid breaking any
-+ * old source code that uses the original name...
-+ */
-+#define jtransform_execute_transformation	jtransform_execute_transform
- 
- #endif /* TRANSFORMS_SUPPORTED */
- 
-

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