/src/ghostpdl/obj/jcomapi.c

Source (jump to first uncovered line)
/*
 * jcomapi.c
 *
 * Copyright (C) 1994-1997, Thomas G. Lane.
 * Modified 2019 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 application interface routines that are used for both
 * compression and decompression.
 */

#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"


/*
 * Abort processing of a JPEG compression or decompression operation,
 * but don't destroy the object itself.
 *
 * For this, we merely clean up all the nonpermanent memory pools.
 * Note that temp files (virtual arrays) are not allowed to belong to
 * the permanent pool, so we will be able to close all temp files here.
 * Closing a data source or destination, if necessary, is the application's
 * responsibility.
 */

GLOBAL(void)
jpeg_abort (j_common_ptr cinfo)
{
  int pool;

  /* Do nothing if called on a not-initialized or destroyed JPEG object. */
  if (cinfo->mem == NULL)
    return;

  /* Releasing pools in reverse order might help avoid fragmentation
   * with some (brain-damaged) malloc libraries.
   */
  for (pool = JPOOL_NUMPOOLS-1; pool > JPOOL_PERMANENT; pool--) {
    (*cinfo->mem->free_pool) (cinfo, pool);
  }

  /* Reset overall state for possible reuse of object */
  if (cinfo->is_decompressor) {
    cinfo->global_state = DSTATE_START;
    /* Try to keep application from accessing now-deleted marker list.
     * A bit kludgy to do it here, but this is the most central place.
     */
    ((j_decompress_ptr) cinfo)->marker_list = NULL;
  } else {
    cinfo->global_state = CSTATE_START;
  }
}


/*
 * Destruction of a JPEG object.
 *
 * Everything gets deallocated except the master jpeg_compress_struct itself
 * and the error manager struct.  Both of these are supplied by the application
 * and must be freed, if necessary, by the application.  (Often they are on
 * the stack and so don't need to be freed anyway.)
 * Closing a data source or destination, if necessary, is the application's
 * responsibility.
 */

GLOBAL(void)
jpeg_destroy (j_common_ptr cinfo)
{
  /* We need only tell the memory manager to release everything. */
  /* NB: mem pointer is NULL if memory mgr failed to initialize. */
  if (cinfo->mem != NULL)
    (*cinfo->mem->self_destruct) (cinfo);
  cinfo->mem = NULL;    /* be safe if jpeg_destroy is called twice */
  cinfo->global_state = 0;  /* mark it destroyed */
}


/*
 * Convenience routines for allocating quantization and Huffman tables.
 * (Would jutils.c be a more reasonable place to put these?)
 */

GLOBAL(JQUANT_TBL *)
jpeg_alloc_quant_table (j_common_ptr cinfo)
{
  JQUANT_TBL *tbl;

  tbl = (JQUANT_TBL *)
    (*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, SIZEOF(JQUANT_TBL));
  tbl->sent_table = FALSE;  /* make sure this is false in any new table */
  return tbl;
}


GLOBAL(JHUFF_TBL *)
jpeg_alloc_huff_table (j_common_ptr cinfo)
{
  JHUFF_TBL *tbl;

  tbl = (JHUFF_TBL *)
    (*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, SIZEOF(JHUFF_TBL));
  tbl->sent_table = FALSE;  /* make sure this is false in any new table */
  return tbl;
}


/*
 * Set up the standard Huffman tables (cf. JPEG standard section K.3).
 * IMPORTANT: these are only valid for 8-bit data precision!
 * (Would jutils.c be a more reasonable place to put this?)
 */

GLOBAL(JHUFF_TBL *)
jpeg_std_huff_table (j_common_ptr cinfo, boolean isDC, int tblno)
{
  JHUFF_TBL **htblptr, *htbl;
  const UINT8 *bits, *val;
  int nsymbols, len;

  static const UINT8 bits_dc_luminance[17] =
    { /* 0-base */ 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 };
  static const UINT8 val_dc_luminance[] =
    { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };

  static const UINT8 bits_dc_chrominance[17] =
    { /* 0-base */ 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 };
  static const UINT8 val_dc_chrominance[] =
    { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };

  static const UINT8 bits_ac_luminance[17] =
    { /* 0-base */ 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d };
  static const UINT8 val_ac_luminance[] =
    { 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
      0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
      0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
      0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
      0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
      0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
      0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
      0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
      0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
      0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
      0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
      0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
      0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
      0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
      0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
      0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
      0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
      0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
      0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
      0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
      0xf9, 0xfa };

  static const UINT8 bits_ac_chrominance[17] =
    { /* 0-base */ 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 };
  static const UINT8 val_ac_chrominance[] =
    { 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
      0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
      0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
      0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
      0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34,
      0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26,
      0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38,
      0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
      0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
      0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
      0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
      0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
      0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96,
      0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
      0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4,
      0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3,
      0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2,
      0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda,
      0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
      0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
      0xf9, 0xfa };

  if (cinfo->is_decompressor) {
    if (isDC)
      htblptr = ((j_decompress_ptr) cinfo)->dc_huff_tbl_ptrs;
    else
      htblptr = ((j_decompress_ptr) cinfo)->ac_huff_tbl_ptrs;
  } else {
    if (isDC)
      htblptr = ((j_compress_ptr) cinfo)->dc_huff_tbl_ptrs;
    else
      htblptr = ((j_compress_ptr) cinfo)->ac_huff_tbl_ptrs;
  }

  switch (tblno) {
  case 0:
    if (isDC) {
      bits = bits_dc_luminance;
      val = val_dc_luminance;
    } else {
      bits = bits_ac_luminance;
      val = val_ac_luminance;
    }
    break;
  case 1:
    if (isDC) {
      bits = bits_dc_chrominance;
      val = val_dc_chrominance;
    } else {
      bits = bits_ac_chrominance;
      val = val_ac_chrominance;
    }
    break;
  default:
    ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, tblno);
    return NULL; /* avoid compiler warnings for uninitialized variables */
  }

  if (htblptr[tblno] == NULL)
    htblptr[tblno] = jpeg_alloc_huff_table(cinfo);

  htbl = htblptr[tblno];

  /* Copy the number-of-symbols-of-each-code-length counts */
  MEMCOPY(htbl->bits, bits, SIZEOF(htbl->bits));

  /* Validate the counts.  We do this here mainly so we can copy the right
   * number of symbols from the val[] array, without risking marching off
   * the end of memory.  jxhuff.c will do a more thorough test later.
   */
  nsymbols = 0;
  for (len = 1; len <= 16; len++)
    nsymbols += bits[len];
  if (nsymbols > 256)
    ERREXIT(cinfo, JERR_BAD_HUFF_TABLE);

  if (nsymbols > 0)
    MEMCOPY(htbl->huffval, val, nsymbols * SIZEOF(UINT8));

  /* Initialize sent_table FALSE so table will be written to JPEG file. */
  htbl->sent_table = FALSE;

  return htbl;
}

Coverage Report

Created: 2025-06-10 07:24

Line	Count	Source (jump to first uncovered line)
1		/*
2		* jcomapi.c
3		*
4		* Copyright (C) 1994-1997, Thomas G. Lane.
5		* Modified 2019 by Guido Vollbeding.
6		* This file is part of the Independent JPEG Group's software.
7		* For conditions of distribution and use, see the accompanying README file.
8		*
9		* This file contains application interface routines that are used for both
10		* compression and decompression.
11		*/
12
13		#define JPEG_INTERNALS
14		#include "jinclude.h"
15		#include "jpeglib.h"
16
17
18		/*
19		* Abort processing of a JPEG compression or decompression operation,
20		* but don't destroy the object itself.
21		*
22		* For this, we merely clean up all the nonpermanent memory pools.
23		* Note that temp files (virtual arrays) are not allowed to belong to
24		* the permanent pool, so we will be able to close all temp files here.
25		* Closing a data source or destination, if necessary, is the application's
26		* responsibility.
27		*/
28
29		GLOBAL(void)
30		jpeg_abort (j_common_ptr cinfo)
31	514	{
32	514	int pool;
33
34		/* Do nothing if called on a not-initialized or destroyed JPEG object. */
35	514	if (cinfo->mem == NULL)
36	0	return;
37
38		/* Releasing pools in reverse order might help avoid fragmentation
39		* with some (brain-damaged) malloc libraries.
40		*/
41	1.02k	for (pool = JPOOL_NUMPOOLS-1; pool > JPOOL_PERMANENT; pool--) {
42	514	(*cinfo->mem->free_pool) (cinfo, pool);
43	514	}
44
45		/* Reset overall state for possible reuse of object */
46	514	if (cinfo->is_decompressor) {
47	514	cinfo->global_state = DSTATE_START;
48		/* Try to keep application from accessing now-deleted marker list.
49		* A bit kludgy to do it here, but this is the most central place.
50		*/
51	514	((j_decompress_ptr) cinfo)->marker_list = NULL;
52	514	} else {
53	0	cinfo->global_state = CSTATE_START;
54	0	}
55	514	}
56
57
58		/*
59		* Destruction of a JPEG object.
60		*
61		* Everything gets deallocated except the master jpeg_compress_struct itself
62		* and the error manager struct. Both of these are supplied by the application
63		* and must be freed, if necessary, by the application. (Often they are on
64		* the stack and so don't need to be freed anyway.)
65		* Closing a data source or destination, if necessary, is the application's
66		* responsibility.
67		*/
68
69		GLOBAL(void)
70		jpeg_destroy (j_common_ptr cinfo)
71	659	{
72		/* We need only tell the memory manager to release everything. */
73		/* NB: mem pointer is NULL if memory mgr failed to initialize. */
74	659	if (cinfo->mem != NULL)
75	659	(*cinfo->mem->self_destruct) (cinfo);
76	659	cinfo->mem = NULL; /* be safe if jpeg_destroy is called twice */
77	659	cinfo->global_state = 0; /* mark it destroyed */
78	659	}
79
80
81		/*
82		* Convenience routines for allocating quantization and Huffman tables.
83		* (Would jutils.c be a more reasonable place to put these?)
84		*/
85
86		GLOBAL(JQUANT_TBL *)
87		jpeg_alloc_quant_table (j_common_ptr cinfo)
88	1.17k	{
89	1.17k	JQUANT_TBL *tbl;
90
91	1.17k	tbl = (JQUANT_TBL *)
92	1.17k	(*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, SIZEOF(JQUANT_TBL));
93	1.17k	tbl->sent_table = FALSE; /* make sure this is false in any new table */
94	1.17k	return tbl;
95	1.17k	}
96
97
98		GLOBAL(JHUFF_TBL *)
99		jpeg_alloc_huff_table (j_common_ptr cinfo)
100	2.18k	{
101	2.18k	JHUFF_TBL *tbl;
102
103	2.18k	tbl = (JHUFF_TBL *)
104	2.18k	(*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, SIZEOF(JHUFF_TBL));
105	2.18k	tbl->sent_table = FALSE; /* make sure this is false in any new table */
106	2.18k	return tbl;
107	2.18k	}
108
109
110		/*
111		* Set up the standard Huffman tables (cf. JPEG standard section K.3).
112		* IMPORTANT: these are only valid for 8-bit data precision!
113		* (Would jutils.c be a more reasonable place to put this?)
114		*/
115
116		GLOBAL(JHUFF_TBL *)
117		jpeg_std_huff_table (j_common_ptr cinfo, boolean isDC, int tblno)
118	22	{
119	22	JHUFF_TBL *htblptr, htbl;
120	22	const UINT8 bits, val;
121	22	int nsymbols, len;
122
123	22	static const UINT8 bits_dc_luminance[17] =
124	22	{ /* 0-base */ 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 };
125	22	static const UINT8 val_dc_luminance[] =
126	22	{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };
127
128	22	static const UINT8 bits_dc_chrominance[17] =
129	22	{ /* 0-base */ 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 };
130	22	static const UINT8 val_dc_chrominance[] =
131	22	{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };
132
133	22	static const UINT8 bits_ac_luminance[17] =
134	22	{ /* 0-base */ 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d };
135	22	static const UINT8 val_ac_luminance[] =
136	22	{ 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
137	22	0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
138	22	0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
139	22	0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
140	22	0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
141	22	0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
142	22	0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
143	22	0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
144	22	0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
145	22	0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
146	22	0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
147	22	0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
148	22	0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
149	22	0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
150	22	0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
151	22	0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
152	22	0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
153	22	0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
154	22	0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
155	22	0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
156	22	0xf9, 0xfa };
157
158	22	static const UINT8 bits_ac_chrominance[17] =
159	22	{ /* 0-base */ 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 };
160	22	static const UINT8 val_ac_chrominance[] =
161	22	{ 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
162	22	0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
163	22	0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
164	22	0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
165	22	0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34,
166	22	0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26,
167	22	0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38,
168	22	0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
169	22	0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
170	22	0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
171	22	0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
172	22	0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
173	22	0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96,
174	22	0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
175	22	0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4,
176	22	0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3,
177	22	0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2,
178	22	0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda,
179	22	0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
180	22	0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
181	22	0xf9, 0xfa };
182
183	22	if (cinfo->is_decompressor) {
184	22	if (isDC)
185	4	htblptr = ((j_decompress_ptr) cinfo)->dc_huff_tbl_ptrs;
186	18	else
187	18	htblptr = ((j_decompress_ptr) cinfo)->ac_huff_tbl_ptrs;
188	22	} else {
189	0	if (isDC)
190	0	htblptr = ((j_compress_ptr) cinfo)->dc_huff_tbl_ptrs;
191	0	else
192	0	htblptr = ((j_compress_ptr) cinfo)->ac_huff_tbl_ptrs;
193	0	}
194
195	22	switch (tblno) {
196	10	case 0:
197	10	if (isDC) {
198	0	bits = bits_dc_luminance;
199	0	val = val_dc_luminance;
200	10	} else {
201	10	bits = bits_ac_luminance;
202	10	val = val_ac_luminance;
203	10	}
204	10	break;
205	12	case 1:
206	12	if (isDC) {
207	4	bits = bits_dc_chrominance;
208	4	val = val_dc_chrominance;
209	8	} else {
210	8	bits = bits_ac_chrominance;
211	8	val = val_ac_chrominance;
212	8	}
213	12	break;
214	0	default:
215	0	ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, tblno);
216	0	return NULL; /* avoid compiler warnings for uninitialized variables */
217	22	}
218
219	22	if (htblptr[tblno] == NULL)
220	22	htblptr[tblno] = jpeg_alloc_huff_table(cinfo);
221
222	22	htbl = htblptr[tblno];
223
224		/* Copy the number-of-symbols-of-each-code-length counts */
225	22	MEMCOPY(htbl->bits, bits, SIZEOF(htbl->bits));
226
227		/* Validate the counts. We do this here mainly so we can copy the right
228		* number of symbols from the val[] array, without risking marching off
229		* the end of memory. jxhuff.c will do a more thorough test later.
230		*/
231	22	nsymbols = 0;
232	374	for (len = 1; len <= 16; len++)
233	352	nsymbols += bits[len];
234	22	if (nsymbols > 256)
235	0	ERREXIT(cinfo, JERR_BAD_HUFF_TABLE);
236
237	22	if (nsymbols > 0)
238	22	MEMCOPY(htbl->huffval, val, nsymbols * SIZEOF(UINT8));
239
240		/* Initialize sent_table FALSE so table will be written to JPEG file. */
241	22	htbl->sent_table = FALSE;
242
243	22	return htbl;
244	22	}