Merge pull request #293 from taka-no-me:libjpeg9

3rdparty/libjpeg/CMakeLists.txt

@@ -9,6 +9,12 @@ ocv_include_directories(${CMAKE_CURRENT_SOURCE_DIR})
 file(GLOB lib_srcs *.c)
 file(GLOB lib_hdrs *.h)
 
+if(ANDROID OR IOS)
+  ocv_list_filterout(lib_srcs jmemansi.c)
+else()
+  ocv_list_filterout(lib_srcs jmemnobs.c)
+endif()
+
 # ----------------------------------------------------------------------------------
 #         Define the library target:
 # ----------------------------------------------------------------------------------
@@ -27,6 +33,7 @@ endif()
 
 ocv_warnings_disable(CMAKE_C_FLAGS -Wcast-align -Wshadow -Wunused)
 ocv_warnings_disable(CMAKE_C_FLAGS -Wunused-parameter) # clang
+ocv_warnings_disable(CMAKE_C_FLAGS /wd4013 /wd4244 /wd4267) # vs2005
 
 set_target_properties(${JPEG_LIBRARY}
   PROPERTIES OUTPUT_NAME ${JPEG_LIBRARY}

3rdparty/libjpeg/jaricom.c

+/*
+ * jaricom.c
+ *
+ * Developed 1997-2011 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.
+ *
+ * This file contains probability estimation tables for common use in
+ * arithmetic entropy encoding and decoding routines.
+ *
+ * This data represents Table D.3 in the JPEG spec (D.2 in the draft),
+ * ISO/IEC IS 10918-1 and CCITT Recommendation ITU-T T.81, and Table 24
+ * in the JBIG spec, ISO/IEC IS 11544 and CCITT Recommendation ITU-T T.82.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+
+/* The following #define specifies the packing of the four components
+ * into the compact INT32 representation.
+ * Note that this formula must match the actual arithmetic encoder
+ * and decoder implementation.  The implementation has to be changed
+ * if this formula is changed.
+ * The current organization is leaned on Markus Kuhn's JBIG
+ * implementation (jbig_tab.c).
+ */
+
+#define V(i,a,b,c,d) (((INT32)a << 16) | ((INT32)c << 8) | ((INT32)d << 7) | b)
+
+const INT32 jpeg_aritab[113+1] = {
+/*
+ * Index, Qe_Value, Next_Index_LPS, Next_Index_MPS, Switch_MPS
+ */
+  V(   0, 0x5a1d,   1,   1, 1 ),
+  V(   1, 0x2586,  14,   2, 0 ),
+  V(   2, 0x1114,  16,   3, 0 ),
+  V(   3, 0x080b,  18,   4, 0 ),
+  V(   4, 0x03d8,  20,   5, 0 ),
+  V(   5, 0x01da,  23,   6, 0 ),
+  V(   6, 0x00e5,  25,   7, 0 ),
+  V(   7, 0x006f,  28,   8, 0 ),
+  V(   8, 0x0036,  30,   9, 0 ),
+  V(   9, 0x001a,  33,  10, 0 ),
+  V(  10, 0x000d,  35,  11, 0 ),
+  V(  11, 0x0006,   9,  12, 0 ),
+  V(  12, 0x0003,  10,  13, 0 ),
+  V(  13, 0x0001,  12,  13, 0 ),
+  V(  14, 0x5a7f,  15,  15, 1 ),
+  V(  15, 0x3f25,  36,  16, 0 ),
+  V(  16, 0x2cf2,  38,  17, 0 ),
+  V(  17, 0x207c,  39,  18, 0 ),
+  V(  18, 0x17b9,  40,  19, 0 ),
+  V(  19, 0x1182,  42,  20, 0 ),
+  V(  20, 0x0cef,  43,  21, 0 ),
+  V(  21, 0x09a1,  45,  22, 0 ),
+  V(  22, 0x072f,  46,  23, 0 ),
+  V(  23, 0x055c,  48,  24, 0 ),
+  V(  24, 0x0406,  49,  25, 0 ),
+  V(  25, 0x0303,  51,  26, 0 ),
+  V(  26, 0x0240,  52,  27, 0 ),
+  V(  27, 0x01b1,  54,  28, 0 ),
+  V(  28, 0x0144,  56,  29, 0 ),
+  V(  29, 0x00f5,  57,  30, 0 ),
+  V(  30, 0x00b7,  59,  31, 0 ),
+  V(  31, 0x008a,  60,  32, 0 ),
+  V(  32, 0x0068,  62,  33, 0 ),
+  V(  33, 0x004e,  63,  34, 0 ),
+  V(  34, 0x003b,  32,  35, 0 ),
+  V(  35, 0x002c,  33,   9, 0 ),
+  V(  36, 0x5ae1,  37,  37, 1 ),
+  V(  37, 0x484c,  64,  38, 0 ),
+  V(  38, 0x3a0d,  65,  39, 0 ),
+  V(  39, 0x2ef1,  67,  40, 0 ),
+  V(  40, 0x261f,  68,  41, 0 ),
+  V(  41, 0x1f33,  69,  42, 0 ),
+  V(  42, 0x19a8,  70,  43, 0 ),
+  V(  43, 0x1518,  72,  44, 0 ),
+  V(  44, 0x1177,  73,  45, 0 ),
+  V(  45, 0x0e74,  74,  46, 0 ),
+  V(  46, 0x0bfb,  75,  47, 0 ),
+  V(  47, 0x09f8,  77,  48, 0 ),
+  V(  48, 0x0861,  78,  49, 0 ),
+  V(  49, 0x0706,  79,  50, 0 ),
+  V(  50, 0x05cd,  48,  51, 0 ),
+  V(  51, 0x04de,  50,  52, 0 ),
+  V(  52, 0x040f,  50,  53, 0 ),
+  V(  53, 0x0363,  51,  54, 0 ),
+  V(  54, 0x02d4,  52,  55, 0 ),
+  V(  55, 0x025c,  53,  56, 0 ),
+  V(  56, 0x01f8,  54,  57, 0 ),
+  V(  57, 0x01a4,  55,  58, 0 ),
+  V(  58, 0x0160,  56,  59, 0 ),
+  V(  59, 0x0125,  57,  60, 0 ),
+  V(  60, 0x00f6,  58,  61, 0 ),
+  V(  61, 0x00cb,  59,  62, 0 ),
+  V(  62, 0x00ab,  61,  63, 0 ),
+  V(  63, 0x008f,  61,  32, 0 ),
+  V(  64, 0x5b12,  65,  65, 1 ),
+  V(  65, 0x4d04,  80,  66, 0 ),
+  V(  66, 0x412c,  81,  67, 0 ),
+  V(  67, 0x37d8,  82,  68, 0 ),
+  V(  68, 0x2fe8,  83,  69, 0 ),
+  V(  69, 0x293c,  84,  70, 0 ),
+  V(  70, 0x2379,  86,  71, 0 ),
+  V(  71, 0x1edf,  87,  72, 0 ),
+  V(  72, 0x1aa9,  87,  73, 0 ),
+  V(  73, 0x174e,  72,  74, 0 ),
+  V(  74, 0x1424,  72,  75, 0 ),
+  V(  75, 0x119c,  74,  76, 0 ),
+  V(  76, 0x0f6b,  74,  77, 0 ),
+  V(  77, 0x0d51,  75,  78, 0 ),
+  V(  78, 0x0bb6,  77,  79, 0 ),
+  V(  79, 0x0a40,  77,  48, 0 ),
+  V(  80, 0x5832,  80,  81, 1 ),
+  V(  81, 0x4d1c,  88,  82, 0 ),
+  V(  82, 0x438e,  89,  83, 0 ),
+  V(  83, 0x3bdd,  90,  84, 0 ),
+  V(  84, 0x34ee,  91,  85, 0 ),
+  V(  85, 0x2eae,  92,  86, 0 ),
+  V(  86, 0x299a,  93,  87, 0 ),
+  V(  87, 0x2516,  86,  71, 0 ),
+  V(  88, 0x5570,  88,  89, 1 ),
+  V(  89, 0x4ca9,  95,  90, 0 ),
+  V(  90, 0x44d9,  96,  91, 0 ),
+  V(  91, 0x3e22,  97,  92, 0 ),
+  V(  92, 0x3824,  99,  93, 0 ),
+  V(  93, 0x32b4,  99,  94, 0 ),
+  V(  94, 0x2e17,  93,  86, 0 ),
+  V(  95, 0x56a8,  95,  96, 1 ),
+  V(  96, 0x4f46, 101,  97, 0 ),
+  V(  97, 0x47e5, 102,  98, 0 ),
+  V(  98, 0x41cf, 103,  99, 0 ),
+  V(  99, 0x3c3d, 104, 100, 0 ),
+  V( 100, 0x375e,  99,  93, 0 ),
+  V( 101, 0x5231, 105, 102, 0 ),
+  V( 102, 0x4c0f, 106, 103, 0 ),
+  V( 103, 0x4639, 107, 104, 0 ),
+  V( 104, 0x415e, 103,  99, 0 ),
+  V( 105, 0x5627, 105, 106, 1 ),
+  V( 106, 0x50e7, 108, 107, 0 ),
+  V( 107, 0x4b85, 109, 103, 0 ),
+  V( 108, 0x5597, 110, 109, 0 ),
+  V( 109, 0x504f, 111, 107, 0 ),
+  V( 110, 0x5a10, 110, 111, 1 ),
+  V( 111, 0x5522, 112, 109, 0 ),
+  V( 112, 0x59eb, 112, 111, 1 ),
+/*
+ * This last entry is used for fixed probability estimate of 0.5
+ * as suggested in Section 10.3 Table 5 of ITU-T Rec. T.851.
+ */
+  V( 113, 0x5a1d, 113, 113, 0 )
+};

3rdparty/libjpeg/jcapimin.c

@@ -2,6 +2,7 @@
  * jcapimin.c
  *
  * Copyright (C) 1994-1998, Thomas G. Lane.
+ * 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.
  *
@@ -37,7 +38,7 @@ jpeg_CreateCompress (j_compress_ptr cinfo, int version, size_t structsize)
     ERREXIT2(cinfo, JERR_BAD_LIB_VERSION, JPEG_LIB_VERSION, version);
   if (structsize != SIZEOF(struct jpeg_compress_struct))
     ERREXIT2(cinfo, JERR_BAD_STRUCT_SIZE,
-         (int) SIZEOF(struct jpeg_compress_struct), (int) structsize);
+             (int) SIZEOF(struct jpeg_compress_struct), (int) structsize);
 
   /* For debugging purposes, we zero the whole master structure.
    * But the application has already set the err pointer, and may have set
@@ -63,14 +64,21 @@ jpeg_CreateCompress (j_compress_ptr cinfo, int version, size_t structsize)
 
   cinfo->comp_info = NULL;
 
-  for (i = 0; i < NUM_QUANT_TBLS; i++)
+  for (i = 0; i < NUM_QUANT_TBLS; i++) {
     cinfo->quant_tbl_ptrs[i] = NULL;
+    cinfo->q_scale_factor[i] = 100;
+  }
 
   for (i = 0; i < NUM_HUFF_TBLS; i++) {
     cinfo->dc_huff_tbl_ptrs[i] = NULL;
     cinfo->ac_huff_tbl_ptrs[i] = NULL;
   }
 
+  /* Must do it here for emit_dqt in case jpeg_write_tables is used */
+  cinfo->block_size = DCTSIZE;
+  cinfo->natural_order = jpeg_natural_order;
+  cinfo->lim_Se = DCTSIZE2-1;
+
   cinfo->script_space = NULL;
 
   cinfo->input_gamma = 1.0;	/* in case application forgets */
@@ -161,15 +169,15 @@ jpeg_finish_compress (j_compress_ptr cinfo)
     (*cinfo->master->prepare_for_pass) (cinfo);
     for (iMCU_row = 0; iMCU_row < cinfo->total_iMCU_rows; iMCU_row++) {
       if (cinfo->progress != NULL) {
-    cinfo->progress->pass_counter = (long) iMCU_row;
-    cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows;
-    (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
+        cinfo->progress->pass_counter = (long) iMCU_row;
+        cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows;
+        (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
       }
       /* We bypass the main controller and invoke coef controller directly;
        * all work is being done from the coefficient buffer.
        */
       if (! (*cinfo->coef->compress_data) (cinfo, (JSAMPIMAGE) NULL))
-    ERREXIT(cinfo, JERR_CANT_SUSPEND);
+        ERREXIT(cinfo, JERR_CANT_SUSPEND);
     }
     (*cinfo->master->finish_pass) (cinfo);
   }
@@ -190,7 +198,7 @@ jpeg_finish_compress (j_compress_ptr cinfo)
 
 GLOBAL(void)
 jpeg_write_marker (j_compress_ptr cinfo, int marker,
-           const JOCTET *dataptr, unsigned int datalen)
+                   const JOCTET *dataptr, unsigned int datalen)
 {
   JMETHOD(void, write_marker_byte, (j_compress_ptr info, int val));
 

3rdparty/libjpeg/jcapistd.c

@@ -75,7 +75,7 @@ jpeg_start_compress (j_compress_ptr cinfo, boolean write_all_tables)
 
 GLOBAL(JDIMENSION)
 jpeg_write_scanlines (j_compress_ptr cinfo, JSAMPARRAY scanlines,
-              JDIMENSION num_lines)
+                      JDIMENSION num_lines)
 {
   JDIMENSION row_ctr, rows_left;
 
@@ -118,7 +118,7 @@ jpeg_write_scanlines (j_compress_ptr cinfo, JSAMPARRAY scanlines,
 
 GLOBAL(JDIMENSION)
 jpeg_write_raw_data (j_compress_ptr cinfo, JSAMPIMAGE data,
-             JDIMENSION num_lines)
+                     JDIMENSION num_lines)
 {
   JDIMENSION lines_per_iMCU_row;
 

3rdparty/libjpeg/jchuff.h

-/*
- * jchuff.h
- *
- * Copyright (C) 1991-1997, 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.
- *
- * This file contains declarations for Huffman entropy encoding routines
- * that are shared between the sequential encoder (jchuff.c) and the
- * progressive encoder (jcphuff.c).  No other modules need to see these.
- */
-
-/* The legal range of a DCT coefficient is
- *  -1024 .. +1023  for 8-bit data;
- * -16384 .. +16383 for 12-bit data.
- * Hence the magnitude should always fit in 10 or 14 bits respectively.
- */
-
-#if BITS_IN_JSAMPLE == 8
-#define MAX_COEF_BITS 10
-#else
-#define MAX_COEF_BITS 14
-#endif
-
-/* Derived data constructed for each Huffman table */
-
-typedef struct {
-  unsigned int ehufco[256];	/* code for each symbol */
-  char ehufsi[256];		/* length of code for each symbol */
-  /* If no code has been allocated for a symbol S, ehufsi[S] contains 0 */
-} c_derived_tbl;
-
-/* Short forms of external names for systems with brain-damaged linkers. */
-
-#ifdef NEED_SHORT_EXTERNAL_NAMES
-#define jpeg_make_c_derived_tbl	jMkCDerived
-#define jpeg_gen_optimal_table	jGenOptTbl
-#endif /* NEED_SHORT_EXTERNAL_NAMES */
-
-/* Expand a Huffman table definition into the derived format */
-EXTERN(void) jpeg_make_c_derived_tbl
-    JPP((j_compress_ptr cinfo, boolean isDC, int tblno,
-         c_derived_tbl ** pdtbl));
-
-/* Generate an optimal table definition given the specified counts */
-EXTERN(void) jpeg_gen_optimal_table
-    JPP((j_compress_ptr cinfo, JHUFF_TBL * htbl, long freq[]));

3rdparty/libjpeg/jcinit.c

@@ -41,22 +41,15 @@ jinit_compress_master (j_compress_ptr cinfo)
   /* Forward DCT */
   jinit_forward_dct(cinfo);
   /* Entropy encoding: either Huffman or arithmetic coding. */
-  if (cinfo->arith_code) {
-    ERREXIT(cinfo, JERR_ARITH_NOTIMPL);
-  } else {
-    if (cinfo->progressive_mode) {
-#ifdef C_PROGRESSIVE_SUPPORTED
-      jinit_phuff_encoder(cinfo);
-#else
-      ERREXIT(cinfo, JERR_NOT_COMPILED);
-#endif
-    } else
-      jinit_huff_encoder(cinfo);
+  if (cinfo->arith_code)
+    jinit_arith_encoder(cinfo);
+  else {
+    jinit_huff_encoder(cinfo);
   }
 
   /* Need a full-image coefficient buffer in any multi-pass mode. */
   jinit_c_coef_controller(cinfo,
-        (boolean) (cinfo->num_scans > 1 || cinfo->optimize_coding));
+                (boolean) (cinfo->num_scans > 1 || cinfo->optimize_coding));
   jinit_c_main_controller(cinfo, FALSE /* never need full buffer here */);
 
   jinit_marker_writer(cinfo);

3rdparty/libjpeg/jconfig.h

-/* jconfig.h.  Generated automatically by configure.  */
-/* jconfig.cfg --- source file edited by configure script */
-/* see jconfig.doc for explanations */
-
 #define HAVE_PROTOTYPES
 #define HAVE_UNSIGNED_CHAR
 #define HAVE_UNSIGNED_SHORT
-/*#undef void*/
-/*#undef const*/
+
+/* Define this if an ordinary "char" type is unsigned.
+ * If you're not sure, leaving it undefined will work at some cost in speed.
+ * If you defined HAVE_UNSIGNED_CHAR then the speed difference is minimal.
+ */
 #undef CHAR_IS_UNSIGNED
 
 #if defined __MINGW__ || defined __MINGW32__ || (!defined WIN32 && !defined _WIN32)
+/* Define this if your system has an ANSI-conforming <stddef.h> file.
+ */
 #define HAVE_STDDEF_H
+
+/* Define this if your system has an ANSI-conforming <stdlib.h> file.
+ */
 #define HAVE_STDLIB_H
 #endif
 
+/* Define this if your system does not have an ANSI/SysV <string.h>,
+ * but does have a BSD-style <strings.h>.
+ */
 #undef NEED_BSD_STRINGS
+
+/* Define this if your system does not provide typedef size_t in any of the
+ * ANSI-standard places (stddef.h, stdlib.h, or stdio.h), but places it in
+ * <sys/types.h> instead.
+ */
 #undef NEED_SYS_TYPES_H
+
+/* For 80x86 machines, you need to define NEED_FAR_POINTERS,
+ * unless you are using a large-data memory model or 80386 flat-memory mode.
+ * On less brain-damaged CPUs this symbol must not be defined.
+ * (Defining this symbol causes large data structures to be referenced through
+ * "far" pointers and to be allocated with a special version of malloc.)
+ */
 #undef NEED_FAR_POINTERS
+
+/* Define this if your linker needs global names to be unique in less
+ * than the first 15 characters.
+ */
 #undef NEED_SHORT_EXTERNAL_NAMES
-/* Define this if you get warnings about undefined structures. */
+
+/* Although a real ANSI C compiler can deal perfectly well with pointers to
+ * unspecified structures (see "incomplete types" in the spec), a few pre-ANSI
+ * and pseudo-ANSI compilers get confused.  To keep one of these bozos happy,
+ * define INCOMPLETE_TYPES_BROKEN.  This is not recommended unless you
+ * actually get "missing structure definition" warnings or errors while
+ * compiling the JPEG code.
+ */
 #undef INCOMPLETE_TYPES_BROKEN
 
-#if defined WIN32 || defined _WIN32
-/* Define "boolean" as unsigned char, not int, per Windows custom */
+/* Define "boolean" as unsigned char, not int, on Windows systems.
+ */
+#ifdef _WIN32
 #ifndef __RPCNDR_H__		/* don't conflict if rpcndr.h already read */
 typedef unsigned char boolean;
 #endif
 #define HAVE_BOOLEAN		/* prevent jmorecfg.h from redefining it */
 #endif
 
+
+/*
+ * The following options affect code selection within the JPEG library,
+ * but they don't need to be visible to applications using the library.
+ * To minimize application namespace pollution, the symbols won't be
+ * defined unless JPEG_INTERNALS has been defined.
+ */
+
 #ifdef JPEG_INTERNALS
 
+/* Define this if your compiler implements ">>" on signed values as a logical
+ * (unsigned) shift; leave it undefined if ">>" is a signed (arithmetic) shift,
+ * which is the normal and rational definition.
+ */
 #undef RIGHT_SHIFT_IS_UNSIGNED
 
 /* These are for configuring the JPEG memory manager. */
-#define DEFAULT_MAX_MEM 1073741824
+#define DEFAULT_MAX_MEM 1073741824 /*1Gb*/
 
 #if !defined WIN32 && !defined _WIN32
 #define INLINE __inline__
@@ -43,14 +86,28 @@ typedef unsigned char boolean;
 
 #endif /* JPEG_INTERNALS */
 
+
+/*
+ * The remaining options do not affect the JPEG library proper,
+ * but only the sample applications cjpeg/djpeg (see cjpeg.c, djpeg.c).
+ * Other applications can ignore these.
+ */
+
 #ifdef JPEG_CJPEG_DJPEG
 
+/* These defines indicate which image (non-JPEG) file formats are allowed. */
+
 #define BMP_SUPPORTED		/* BMP image file format */
 #define GIF_SUPPORTED		/* GIF image file format */
 #define PPM_SUPPORTED		/* PBMPLUS PPM/PGM image file format */
 #undef RLE_SUPPORTED		/* Utah RLE image file format */
 #define TARGA_SUPPORTED		/* Targa image file format */
 
+/* Define this if you want to name both input and output files on the command
+ * line, rather than using stdout and optionally stdin.  You MUST do this if
+ * your system can't cope with binary I/O to stdin/stdout.  See comments at
+ * head of cjpeg.c or djpeg.c.
+ */
 #if defined WIN32 || defined _WIN32
 #define TWO_FILE_COMMANDLINE	/* optional */
 #define USE_SETMODE		/* Microsoft has setmode() */
@@ -58,10 +115,22 @@ typedef unsigned char boolean;
 #undef TWO_FILE_COMMANDLINE
 #endif
 
+/* Define this if your system needs explicit cleanup of temporary files.
+ * This is crucial under MS-DOS, where the temporary "files" may be areas
+ * of extended memory; on most other systems it's not as important.
+ */
 #undef NEED_SIGNAL_CATCHER
+
+/* By default, we open image files with fopen(...,"rb") or fopen(...,"wb").
+ * This is necessary on systems that distinguish text files from binary files,
+ * and is harmless on most systems that don't.  If you have one of the rare
+ * systems that complains about the "b" spec, define this symbol.
+ */
 #undef DONT_USE_B_MODE
 
-/* Define this if you want percent-done progress reports from cjpeg/djpeg. */
+/* Define this if you want percent-done progress reports from cjpeg/djpeg.
+ */
 #undef PROGRESS_REPORT
 
+
 #endif /* JPEG_CJPEG_DJPEG */

3rdparty/libjpeg/jdapimin.c

@@ -2,6 +2,7 @@
  * jdapimin.c
  *
  * Copyright (C) 1994-1998, Thomas G. Lane.
+ * Modified 2009 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -37,7 +38,7 @@ jpeg_CreateDecompress (j_decompress_ptr cinfo, int version, size_t structsize)
     ERREXIT2(cinfo, JERR_BAD_LIB_VERSION, JPEG_LIB_VERSION, version);
   if (structsize != SIZEOF(struct jpeg_decompress_struct))
     ERREXIT2(cinfo, JERR_BAD_STRUCT_SIZE,
-         (int) SIZEOF(struct jpeg_decompress_struct), (int) structsize);
+             (int) SIZEOF(struct jpeg_decompress_struct), (int) structsize);
 
   /* For debugging purposes, we zero the whole master structure.
    * But the application has already set the err pointer, and may have set
@@ -128,15 +129,15 @@ default_decompress_parms (j_decompress_ptr cinfo)
     } else if (cinfo->saw_Adobe_marker) {
       switch (cinfo->Adobe_transform) {
       case 0:
-    cinfo->jpeg_color_space = JCS_RGB;
-    break;
+        cinfo->jpeg_color_space = JCS_RGB;
+        break;
       case 1:
-    cinfo->jpeg_color_space = JCS_YCbCr;
-    break;
+        cinfo->jpeg_color_space = JCS_YCbCr;
+        break;
       default:
-    WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo->Adobe_transform);
-    cinfo->jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */
-    break;
+        WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo->Adobe_transform);
+        cinfo->jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */
+        break;
       }
     } else {
       /* Saw no special markers, try to guess from the component IDs */
@@ -145,12 +146,12 @@ default_decompress_parms (j_decompress_ptr cinfo)
       int cid2 = cinfo->comp_info[2].component_id;
 
       if (cid0 == 1 && cid1 == 2 && cid2 == 3)
-    cinfo->jpeg_color_space = JCS_YCbCr; /* assume JFIF w/out marker */
+        cinfo->jpeg_color_space = JCS_YCbCr; /* assume JFIF w/out marker */
       else if (cid0 == 82 && cid1 == 71 && cid2 == 66)
-    cinfo->jpeg_color_space = JCS_RGB; /* ASCII 'R', 'G', 'B' */
+        cinfo->jpeg_color_space = JCS_RGB; /* ASCII 'R', 'G', 'B' */
       else {
-    TRACEMS3(cinfo, 1, JTRC_UNKNOWN_IDS, cid0, cid1, cid2);
-    cinfo->jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */
+        TRACEMS3(cinfo, 1, JTRC_UNKNOWN_IDS, cid0, cid1, cid2);
+        cinfo->jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */
       }
     }
     /* Always guess RGB is proper output colorspace. */
@@ -161,15 +162,15 @@ default_decompress_parms (j_decompress_ptr cinfo)
     if (cinfo->saw_Adobe_marker) {
       switch (cinfo->Adobe_transform) {
       case 0:
-    cinfo->jpeg_color_space = JCS_CMYK;
-    break;
+        cinfo->jpeg_color_space = JCS_CMYK;
+        break;
       case 2:
-    cinfo->jpeg_color_space = JCS_YCCK;
-    break;
+        cinfo->jpeg_color_space = JCS_YCCK;
+        break;
       default:
-    WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo->Adobe_transform);
-    cinfo->jpeg_color_space = JCS_YCCK; /* assume it's YCCK */
-    break;
+        WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo->Adobe_transform);
+        cinfo->jpeg_color_space = JCS_YCCK; /* assume it's YCCK */
+        break;
       }
     } else {
       /* No special markers, assume straight CMYK. */
@@ -185,8 +186,8 @@ default_decompress_parms (j_decompress_ptr cinfo)
   }
 
   /* Set defaults for other decompression parameters. */
-  cinfo->scale_num = 1;		/* 1:1 scaling */
-  cinfo->scale_denom = 1;
+  cinfo->scale_num = cinfo->block_size;		/* 1:1 scaling */
+  cinfo->scale_denom = cinfo->block_size;
   cinfo->output_gamma = 1.0;
   cinfo->buffered_image = FALSE;
   cinfo->raw_data_out = FALSE;