Coverage Report

Created: 2026-08-31 06:22

next uncovered line (L), next uncovered region (R), next uncovered branch (B)
/work/libjpeg-turbo/src/jstdhuff.c
Line
Count
Source
1
/*
2
 * jstdhuff.c
3
 *
4
 * This file was part of the Independent JPEG Group's software:
5
 * Copyright (C) 1991-1998, Thomas G. Lane.
6
 * libjpeg-turbo Modifications:
7
 * Copyright (C) 2013, 2022, 2024, D. R. Commander.
8
 * For conditions of distribution and use, see the accompanying README.ijg
9
 * file.
10
 *
11
 * This file contains routines to set the default Huffman tables, if they are
12
 * not already set.
13
 */
14
15
/*
16
 * Huffman table setup routines
17
 */
18
19
LOCAL(void)
20
add_huff_table(j_common_ptr cinfo, JHUFF_TBL **htblptr, const UINT8 *bits,
21
               const UINT8 *val)
22
/* Define a Huffman table */
23
320
{
24
320
  int nsymbols, len;
25
26
320
  if (*htblptr == NULL)
27
320
    *htblptr = jpeg_alloc_huff_table(cinfo);
28
0
  else if (cinfo->is_decompressor)
29
0
    return;
30
31
  /* Copy the number-of-symbols-of-each-code-length counts */
32
320
  memcpy((*htblptr)->bits, bits, sizeof((*htblptr)->bits));
33
34
  /* Validate the counts.  We do this here mainly so we can copy the right
35
   * number of symbols from the val[] array, without risking marching off
36
   * the end of memory.  jchuff.c will do a more thorough test later.
37
   */
38
320
  nsymbols = 0;
39
5.44k
  for (len = 1; len <= 16; len++)
40
5.12k
    nsymbols += bits[len];
41
320
  if (nsymbols < 1 || nsymbols > 256)
42
0
    ERREXIT(cinfo, JERR_BAD_HUFF_TABLE);
43
44
320
  memcpy((*htblptr)->huffval, val, nsymbols * sizeof(UINT8));
45
320
  memset(&((*htblptr)->huffval[nsymbols]), 0,
46
320
         (256 - nsymbols) * sizeof(UINT8));
47
48
  /* Initialize sent_table FALSE so table will be written to JPEG file. */
49
320
  (*htblptr)->sent_table = FALSE;
50
320
}
jcparam.c:add_huff_table
Line
Count
Source
23
320
{
24
320
  int nsymbols, len;
25
26
320
  if (*htblptr == NULL)
27
320
    *htblptr = jpeg_alloc_huff_table(cinfo);
28
0
  else if (cinfo->is_decompressor)
29
0
    return;
30
31
  /* Copy the number-of-symbols-of-each-code-length counts */
32
320
  memcpy((*htblptr)->bits, bits, sizeof((*htblptr)->bits));
33
34
  /* Validate the counts.  We do this here mainly so we can copy the right
35
   * number of symbols from the val[] array, without risking marching off
36
   * the end of memory.  jchuff.c will do a more thorough test later.
37
   */
38
320
  nsymbols = 0;
39
5.44k
  for (len = 1; len <= 16; len++)
40
5.12k
    nsymbols += bits[len];
41
320
  if (nsymbols < 1 || nsymbols > 256)
42
0
    ERREXIT(cinfo, JERR_BAD_HUFF_TABLE);
43
44
320
  memcpy((*htblptr)->huffval, val, nsymbols * sizeof(UINT8));
45
320
  memset(&((*htblptr)->huffval[nsymbols]), 0,
46
320
         (256 - nsymbols) * sizeof(UINT8));
47
48
  /* Initialize sent_table FALSE so table will be written to JPEG file. */
49
320
  (*htblptr)->sent_table = FALSE;
50
320
}
Unexecuted instantiation: jdhuff.c:add_huff_table
51
52
53
LOCAL(void)
54
std_huff_tables(j_common_ptr cinfo)
55
/* Set up the standard Huffman tables (cf. JPEG standard section K.3) */
56
/* IMPORTANT: these are only valid for 8-bit data precision! */
57
80
{
58
80
  JHUFF_TBL **dc_huff_tbl_ptrs, **ac_huff_tbl_ptrs;
59
60
80
  static const UINT8 bits_dc_luminance[17] = {
61
80
    /* 0-base */ 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0
62
80
  };
63
80
  static const UINT8 val_dc_luminance[] = {
64
80
    0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
65
80
  };
66
67
80
  static const UINT8 bits_dc_chrominance[17] = {
68
80
    /* 0-base */ 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0
69
80
  };
70
80
  static const UINT8 val_dc_chrominance[] = {
71
80
    0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
72
80
  };
73
74
80
  static const UINT8 bits_ac_luminance[17] = {
75
80
    /* 0-base */ 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d
76
80
  };
77
80
  static const UINT8 val_ac_luminance[] = {
78
80
    0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
79
80
    0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
80
80
    0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
81
80
    0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
82
80
    0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
83
80
    0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
84
80
    0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
85
80
    0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
86
80
    0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
87
80
    0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
88
80
    0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
89
80
    0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
90
80
    0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
91
80
    0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
92
80
    0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
93
80
    0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
94
80
    0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
95
80
    0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
96
80
    0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
97
80
    0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
98
80
    0xf9, 0xfa
99
80
  };
100
101
80
  static const UINT8 bits_ac_chrominance[17] = {
102
80
    /* 0-base */ 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77
103
80
  };
104
80
  static const UINT8 val_ac_chrominance[] = {
105
80
    0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
106
80
    0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
107
80
    0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
108
80
    0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
109
80
    0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34,
110
80
    0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26,
111
80
    0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38,
112
80
    0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
113
80
    0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
114
80
    0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
115
80
    0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
116
80
    0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
117
80
    0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96,
118
80
    0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
119
80
    0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4,
120
80
    0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3,
121
80
    0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2,
122
80
    0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda,
123
80
    0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
124
80
    0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
125
80
    0xf9, 0xfa
126
80
  };
127
128
80
  if (cinfo->is_decompressor) {
129
0
    dc_huff_tbl_ptrs = ((j_decompress_ptr)cinfo)->dc_huff_tbl_ptrs;
130
0
    ac_huff_tbl_ptrs = ((j_decompress_ptr)cinfo)->ac_huff_tbl_ptrs;
131
80
  } else {
132
80
    dc_huff_tbl_ptrs = ((j_compress_ptr)cinfo)->dc_huff_tbl_ptrs;
133
80
    ac_huff_tbl_ptrs = ((j_compress_ptr)cinfo)->ac_huff_tbl_ptrs;
134
80
  }
135
136
80
  add_huff_table(cinfo, &dc_huff_tbl_ptrs[0], bits_dc_luminance,
137
80
                 val_dc_luminance);
138
80
  add_huff_table(cinfo, &ac_huff_tbl_ptrs[0], bits_ac_luminance,
139
80
                 val_ac_luminance);
140
80
  add_huff_table(cinfo, &dc_huff_tbl_ptrs[1], bits_dc_chrominance,
141
80
                 val_dc_chrominance);
142
80
  add_huff_table(cinfo, &ac_huff_tbl_ptrs[1], bits_ac_chrominance,
143
80
                 val_ac_chrominance);
144
80
}
jcparam.c:std_huff_tables
Line
Count
Source
57
80
{
58
80
  JHUFF_TBL **dc_huff_tbl_ptrs, **ac_huff_tbl_ptrs;
59
60
80
  static const UINT8 bits_dc_luminance[17] = {
61
80
    /* 0-base */ 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0
62
80
  };
63
80
  static const UINT8 val_dc_luminance[] = {
64
80
    0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
65
80
  };
66
67
80
  static const UINT8 bits_dc_chrominance[17] = {
68
80
    /* 0-base */ 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0
69
80
  };
70
80
  static const UINT8 val_dc_chrominance[] = {
71
80
    0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
72
80
  };
73
74
80
  static const UINT8 bits_ac_luminance[17] = {
75
80
    /* 0-base */ 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d
76
80
  };
77
80
  static const UINT8 val_ac_luminance[] = {
78
80
    0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
79
80
    0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
80
80
    0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
81
80
    0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
82
80
    0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
83
80
    0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
84
80
    0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
85
80
    0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
86
80
    0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
87
80
    0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
88
80
    0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
89
80
    0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
90
80
    0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
91
80
    0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
92
80
    0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
93
80
    0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
94
80
    0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
95
80
    0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
96
80
    0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
97
80
    0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
98
80
    0xf9, 0xfa
99
80
  };
100
101
80
  static const UINT8 bits_ac_chrominance[17] = {
102
80
    /* 0-base */ 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77
103
80
  };
104
80
  static const UINT8 val_ac_chrominance[] = {
105
80
    0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
106
80
    0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
107
80
    0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
108
80
    0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
109
80
    0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34,
110
80
    0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26,
111
80
    0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38,
112
80
    0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
113
80
    0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
114
80
    0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
115
80
    0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
116
80
    0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
117
80
    0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96,
118
80
    0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
119
80
    0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4,
120
80
    0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3,
121
80
    0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2,
122
80
    0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda,
123
80
    0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
124
80
    0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
125
80
    0xf9, 0xfa
126
80
  };
127
128
80
  if (cinfo->is_decompressor) {
129
0
    dc_huff_tbl_ptrs = ((j_decompress_ptr)cinfo)->dc_huff_tbl_ptrs;
130
0
    ac_huff_tbl_ptrs = ((j_decompress_ptr)cinfo)->ac_huff_tbl_ptrs;
131
80
  } else {
132
80
    dc_huff_tbl_ptrs = ((j_compress_ptr)cinfo)->dc_huff_tbl_ptrs;
133
80
    ac_huff_tbl_ptrs = ((j_compress_ptr)cinfo)->ac_huff_tbl_ptrs;
134
80
  }
135
136
80
  add_huff_table(cinfo, &dc_huff_tbl_ptrs[0], bits_dc_luminance,
137
80
                 val_dc_luminance);
138
80
  add_huff_table(cinfo, &ac_huff_tbl_ptrs[0], bits_ac_luminance,
139
80
                 val_ac_luminance);
140
80
  add_huff_table(cinfo, &dc_huff_tbl_ptrs[1], bits_dc_chrominance,
141
80
                 val_dc_chrominance);
142
80
  add_huff_table(cinfo, &ac_huff_tbl_ptrs[1], bits_ac_chrominance,
143
80
                 val_ac_chrominance);
144
80
}
Unexecuted instantiation: jdhuff.c:std_huff_tables