diff options
Diffstat (limited to 'libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jcparam.c')
-rw-r--r-- | libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jcparam.c | 1264 |
1 files changed, 632 insertions, 632 deletions
diff --git a/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jcparam.c b/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jcparam.c index 10c5c87..c5e85dd 100644 --- a/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jcparam.c +++ b/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jcparam.c | |||
@@ -1,632 +1,632 @@ | |||
1 | /* | 1 | /* |
2 | * jcparam.c | 2 | * jcparam.c |
3 | * | 3 | * |
4 | * Copyright (C) 1991-1998, Thomas G. Lane. | 4 | * Copyright (C) 1991-1998, Thomas G. Lane. |
5 | * Modified 2003-2008 by Guido Vollbeding. | 5 | * Modified 2003-2008 by Guido Vollbeding. |
6 | * This file is part of the Independent JPEG Group's software. | 6 | * This file is part of the Independent JPEG Group's software. |
7 | * For conditions of distribution and use, see the accompanying README file. | 7 | * For conditions of distribution and use, see the accompanying README file. |
8 | * | 8 | * |
9 | * This file contains optional default-setting code for the JPEG compressor. | 9 | * This file contains optional default-setting code for the JPEG compressor. |
10 | * Applications do not have to use this file, but those that don't use it | 10 | * Applications do not have to use this file, but those that don't use it |
11 | * must know a lot more about the innards of the JPEG code. | 11 | * must know a lot more about the innards of the JPEG code. |
12 | */ | 12 | */ |
13 | 13 | ||
14 | #define JPEG_INTERNALS | 14 | #define JPEG_INTERNALS |
15 | #include "jinclude.h" | 15 | #include "jinclude.h" |
16 | #include "jpeglib.h" | 16 | #include "jpeglib.h" |
17 | 17 | ||
18 | 18 | ||
19 | /* | 19 | /* |
20 | * Quantization table setup routines | 20 | * Quantization table setup routines |
21 | */ | 21 | */ |
22 | 22 | ||
23 | GLOBAL(void) | 23 | GLOBAL(void) |
24 | jpeg_add_quant_table (j_compress_ptr cinfo, int which_tbl, | 24 | jpeg_add_quant_table (j_compress_ptr cinfo, int which_tbl, |
25 | const unsigned int *basic_table, | 25 | const unsigned int *basic_table, |
26 | int scale_factor, boolean force_baseline) | 26 | int scale_factor, boolean force_baseline) |
27 | /* Define a quantization table equal to the basic_table times | 27 | /* Define a quantization table equal to the basic_table times |
28 | * a scale factor (given as a percentage). | 28 | * a scale factor (given as a percentage). |
29 | * If force_baseline is TRUE, the computed quantization table entries | 29 | * If force_baseline is TRUE, the computed quantization table entries |
30 | * are limited to 1..255 for JPEG baseline compatibility. | 30 | * are limited to 1..255 for JPEG baseline compatibility. |
31 | */ | 31 | */ |
32 | { | 32 | { |
33 | JQUANT_TBL ** qtblptr; | 33 | JQUANT_TBL ** qtblptr; |
34 | int i; | 34 | int i; |
35 | long temp; | 35 | long temp; |
36 | 36 | ||
37 | /* Safety check to ensure start_compress not called yet. */ | 37 | /* Safety check to ensure start_compress not called yet. */ |
38 | if (cinfo->global_state != CSTATE_START) | 38 | if (cinfo->global_state != CSTATE_START) |
39 | ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); | 39 | ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); |
40 | 40 | ||
41 | if (which_tbl < 0 || which_tbl >= NUM_QUANT_TBLS) | 41 | if (which_tbl < 0 || which_tbl >= NUM_QUANT_TBLS) |
42 | ERREXIT1(cinfo, JERR_DQT_INDEX, which_tbl); | 42 | ERREXIT1(cinfo, JERR_DQT_INDEX, which_tbl); |
43 | 43 | ||
44 | qtblptr = & cinfo->quant_tbl_ptrs[which_tbl]; | 44 | qtblptr = & cinfo->quant_tbl_ptrs[which_tbl]; |
45 | 45 | ||
46 | if (*qtblptr == NULL) | 46 | if (*qtblptr == NULL) |
47 | *qtblptr = jpeg_alloc_quant_table((j_common_ptr) cinfo); | 47 | *qtblptr = jpeg_alloc_quant_table((j_common_ptr) cinfo); |
48 | 48 | ||
49 | for (i = 0; i < DCTSIZE2; i++) { | 49 | for (i = 0; i < DCTSIZE2; i++) { |
50 | temp = ((long) basic_table[i] * scale_factor + 50L) / 100L; | 50 | temp = ((long) basic_table[i] * scale_factor + 50L) / 100L; |
51 | /* limit the values to the valid range */ | 51 | /* limit the values to the valid range */ |
52 | if (temp <= 0L) temp = 1L; | 52 | if (temp <= 0L) temp = 1L; |
53 | if (temp > 32767L) temp = 32767L; /* max quantizer needed for 12 bits */ | 53 | if (temp > 32767L) temp = 32767L; /* max quantizer needed for 12 bits */ |
54 | if (force_baseline && temp > 255L) | 54 | if (force_baseline && temp > 255L) |
55 | temp = 255L; /* limit to baseline range if requested */ | 55 | temp = 255L; /* limit to baseline range if requested */ |
56 | (*qtblptr)->quantval[i] = (UINT16) temp; | 56 | (*qtblptr)->quantval[i] = (UINT16) temp; |
57 | } | 57 | } |
58 | 58 | ||
59 | /* Initialize sent_table FALSE so table will be written to JPEG file. */ | 59 | /* Initialize sent_table FALSE so table will be written to JPEG file. */ |
60 | (*qtblptr)->sent_table = FALSE; | 60 | (*qtblptr)->sent_table = FALSE; |
61 | } | 61 | } |
62 | 62 | ||
63 | 63 | ||
64 | /* These are the sample quantization tables given in JPEG spec section K.1. | 64 | /* These are the sample quantization tables given in JPEG spec section K.1. |
65 | * The spec says that the values given produce "good" quality, and | 65 | * The spec says that the values given produce "good" quality, and |
66 | * when divided by 2, "very good" quality. | 66 | * when divided by 2, "very good" quality. |
67 | */ | 67 | */ |
68 | static const unsigned int std_luminance_quant_tbl[DCTSIZE2] = { | 68 | static const unsigned int std_luminance_quant_tbl[DCTSIZE2] = { |
69 | 16, 11, 10, 16, 24, 40, 51, 61, | 69 | 16, 11, 10, 16, 24, 40, 51, 61, |
70 | 12, 12, 14, 19, 26, 58, 60, 55, | 70 | 12, 12, 14, 19, 26, 58, 60, 55, |
71 | 14, 13, 16, 24, 40, 57, 69, 56, | 71 | 14, 13, 16, 24, 40, 57, 69, 56, |
72 | 14, 17, 22, 29, 51, 87, 80, 62, | 72 | 14, 17, 22, 29, 51, 87, 80, 62, |
73 | 18, 22, 37, 56, 68, 109, 103, 77, | 73 | 18, 22, 37, 56, 68, 109, 103, 77, |
74 | 24, 35, 55, 64, 81, 104, 113, 92, | 74 | 24, 35, 55, 64, 81, 104, 113, 92, |
75 | 49, 64, 78, 87, 103, 121, 120, 101, | 75 | 49, 64, 78, 87, 103, 121, 120, 101, |
76 | 72, 92, 95, 98, 112, 100, 103, 99 | 76 | 72, 92, 95, 98, 112, 100, 103, 99 |
77 | }; | 77 | }; |
78 | static const unsigned int std_chrominance_quant_tbl[DCTSIZE2] = { | 78 | static const unsigned int std_chrominance_quant_tbl[DCTSIZE2] = { |
79 | 17, 18, 24, 47, 99, 99, 99, 99, | 79 | 17, 18, 24, 47, 99, 99, 99, 99, |
80 | 18, 21, 26, 66, 99, 99, 99, 99, | 80 | 18, 21, 26, 66, 99, 99, 99, 99, |
81 | 24, 26, 56, 99, 99, 99, 99, 99, | 81 | 24, 26, 56, 99, 99, 99, 99, 99, |
82 | 47, 66, 99, 99, 99, 99, 99, 99, | 82 | 47, 66, 99, 99, 99, 99, 99, 99, |
83 | 99, 99, 99, 99, 99, 99, 99, 99, | 83 | 99, 99, 99, 99, 99, 99, 99, 99, |
84 | 99, 99, 99, 99, 99, 99, 99, 99, | 84 | 99, 99, 99, 99, 99, 99, 99, 99, |
85 | 99, 99, 99, 99, 99, 99, 99, 99, | 85 | 99, 99, 99, 99, 99, 99, 99, 99, |
86 | 99, 99, 99, 99, 99, 99, 99, 99 | 86 | 99, 99, 99, 99, 99, 99, 99, 99 |
87 | }; | 87 | }; |
88 | 88 | ||
89 | 89 | ||
90 | GLOBAL(void) | 90 | GLOBAL(void) |
91 | jpeg_default_qtables (j_compress_ptr cinfo, boolean force_baseline) | 91 | jpeg_default_qtables (j_compress_ptr cinfo, boolean force_baseline) |
92 | /* Set or change the 'quality' (quantization) setting, using default tables | 92 | /* Set or change the 'quality' (quantization) setting, using default tables |
93 | * and straight percentage-scaling quality scales. | 93 | * and straight percentage-scaling quality scales. |
94 | * This entry point allows different scalings for luminance and chrominance. | 94 | * This entry point allows different scalings for luminance and chrominance. |
95 | */ | 95 | */ |
96 | { | 96 | { |
97 | /* Set up two quantization tables using the specified scaling */ | 97 | /* Set up two quantization tables using the specified scaling */ |
98 | jpeg_add_quant_table(cinfo, 0, std_luminance_quant_tbl, | 98 | jpeg_add_quant_table(cinfo, 0, std_luminance_quant_tbl, |
99 | cinfo->q_scale_factor[0], force_baseline); | 99 | cinfo->q_scale_factor[0], force_baseline); |
100 | jpeg_add_quant_table(cinfo, 1, std_chrominance_quant_tbl, | 100 | jpeg_add_quant_table(cinfo, 1, std_chrominance_quant_tbl, |
101 | cinfo->q_scale_factor[1], force_baseline); | 101 | cinfo->q_scale_factor[1], force_baseline); |
102 | } | 102 | } |
103 | 103 | ||
104 | 104 | ||
105 | GLOBAL(void) | 105 | GLOBAL(void) |
106 | jpeg_set_linear_quality (j_compress_ptr cinfo, int scale_factor, | 106 | jpeg_set_linear_quality (j_compress_ptr cinfo, int scale_factor, |
107 | boolean force_baseline) | 107 | boolean force_baseline) |
108 | /* Set or change the 'quality' (quantization) setting, using default tables | 108 | /* Set or change the 'quality' (quantization) setting, using default tables |
109 | * and a straight percentage-scaling quality scale. In most cases it's better | 109 | * and a straight percentage-scaling quality scale. In most cases it's better |
110 | * to use jpeg_set_quality (below); this entry point is provided for | 110 | * to use jpeg_set_quality (below); this entry point is provided for |
111 | * applications that insist on a linear percentage scaling. | 111 | * applications that insist on a linear percentage scaling. |
112 | */ | 112 | */ |
113 | { | 113 | { |
114 | /* Set up two quantization tables using the specified scaling */ | 114 | /* Set up two quantization tables using the specified scaling */ |
115 | jpeg_add_quant_table(cinfo, 0, std_luminance_quant_tbl, | 115 | jpeg_add_quant_table(cinfo, 0, std_luminance_quant_tbl, |
116 | scale_factor, force_baseline); | 116 | scale_factor, force_baseline); |
117 | jpeg_add_quant_table(cinfo, 1, std_chrominance_quant_tbl, | 117 | jpeg_add_quant_table(cinfo, 1, std_chrominance_quant_tbl, |
118 | scale_factor, force_baseline); | 118 | scale_factor, force_baseline); |
119 | } | 119 | } |
120 | 120 | ||
121 | 121 | ||
122 | GLOBAL(int) | 122 | GLOBAL(int) |
123 | jpeg_quality_scaling (int quality) | 123 | jpeg_quality_scaling (int quality) |
124 | /* Convert a user-specified quality rating to a percentage scaling factor | 124 | /* Convert a user-specified quality rating to a percentage scaling factor |
125 | * for an underlying quantization table, using our recommended scaling curve. | 125 | * for an underlying quantization table, using our recommended scaling curve. |
126 | * The input 'quality' factor should be 0 (terrible) to 100 (very good). | 126 | * The input 'quality' factor should be 0 (terrible) to 100 (very good). |
127 | */ | 127 | */ |
128 | { | 128 | { |
129 | /* Safety limit on quality factor. Convert 0 to 1 to avoid zero divide. */ | 129 | /* Safety limit on quality factor. Convert 0 to 1 to avoid zero divide. */ |
130 | if (quality <= 0) quality = 1; | 130 | if (quality <= 0) quality = 1; |
131 | if (quality > 100) quality = 100; | 131 | if (quality > 100) quality = 100; |
132 | 132 | ||
133 | /* The basic table is used as-is (scaling 100) for a quality of 50. | 133 | /* The basic table is used as-is (scaling 100) for a quality of 50. |
134 | * Qualities 50..100 are converted to scaling percentage 200 - 2*Q; | 134 | * Qualities 50..100 are converted to scaling percentage 200 - 2*Q; |
135 | * note that at Q=100 the scaling is 0, which will cause jpeg_add_quant_table | 135 | * note that at Q=100 the scaling is 0, which will cause jpeg_add_quant_table |
136 | * to make all the table entries 1 (hence, minimum quantization loss). | 136 | * to make all the table entries 1 (hence, minimum quantization loss). |
137 | * Qualities 1..50 are converted to scaling percentage 5000/Q. | 137 | * Qualities 1..50 are converted to scaling percentage 5000/Q. |
138 | */ | 138 | */ |
139 | if (quality < 50) | 139 | if (quality < 50) |
140 | quality = 5000 / quality; | 140 | quality = 5000 / quality; |
141 | else | 141 | else |
142 | quality = 200 - quality*2; | 142 | quality = 200 - quality*2; |
143 | 143 | ||
144 | return quality; | 144 | return quality; |
145 | } | 145 | } |
146 | 146 | ||
147 | 147 | ||
148 | GLOBAL(void) | 148 | GLOBAL(void) |
149 | jpeg_set_quality (j_compress_ptr cinfo, int quality, boolean force_baseline) | 149 | jpeg_set_quality (j_compress_ptr cinfo, int quality, boolean force_baseline) |
150 | /* Set or change the 'quality' (quantization) setting, using default tables. | 150 | /* Set or change the 'quality' (quantization) setting, using default tables. |
151 | * This is the standard quality-adjusting entry point for typical user | 151 | * This is the standard quality-adjusting entry point for typical user |
152 | * interfaces; only those who want detailed control over quantization tables | 152 | * interfaces; only those who want detailed control over quantization tables |
153 | * would use the preceding three routines directly. | 153 | * would use the preceding three routines directly. |
154 | */ | 154 | */ |
155 | { | 155 | { |
156 | /* Convert user 0-100 rating to percentage scaling */ | 156 | /* Convert user 0-100 rating to percentage scaling */ |
157 | quality = jpeg_quality_scaling(quality); | 157 | quality = jpeg_quality_scaling(quality); |
158 | 158 | ||
159 | /* Set up standard quality tables */ | 159 | /* Set up standard quality tables */ |
160 | jpeg_set_linear_quality(cinfo, quality, force_baseline); | 160 | jpeg_set_linear_quality(cinfo, quality, force_baseline); |
161 | } | 161 | } |
162 | 162 | ||
163 | 163 | ||
164 | /* | 164 | /* |
165 | * Huffman table setup routines | 165 | * Huffman table setup routines |
166 | */ | 166 | */ |
167 | 167 | ||
168 | LOCAL(void) | 168 | LOCAL(void) |
169 | add_huff_table (j_compress_ptr cinfo, | 169 | add_huff_table (j_compress_ptr cinfo, |
170 | JHUFF_TBL **htblptr, const UINT8 *bits, const UINT8 *val) | 170 | JHUFF_TBL **htblptr, const UINT8 *bits, const UINT8 *val) |
171 | /* Define a Huffman table */ | 171 | /* Define a Huffman table */ |
172 | { | 172 | { |
173 | int nsymbols, len; | 173 | int nsymbols, len; |
174 | 174 | ||
175 | if (*htblptr == NULL) | 175 | if (*htblptr == NULL) |
176 | *htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo); | 176 | *htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo); |
177 | 177 | ||
178 | /* Copy the number-of-symbols-of-each-code-length counts */ | 178 | /* Copy the number-of-symbols-of-each-code-length counts */ |
179 | MEMCOPY((*htblptr)->bits, bits, SIZEOF((*htblptr)->bits)); | 179 | MEMCOPY((*htblptr)->bits, bits, SIZEOF((*htblptr)->bits)); |
180 | 180 | ||
181 | /* Validate the counts. We do this here mainly so we can copy the right | 181 | /* Validate the counts. We do this here mainly so we can copy the right |
182 | * number of symbols from the val[] array, without risking marching off | 182 | * number of symbols from the val[] array, without risking marching off |
183 | * the end of memory. jchuff.c will do a more thorough test later. | 183 | * the end of memory. jchuff.c will do a more thorough test later. |
184 | */ | 184 | */ |
185 | nsymbols = 0; | 185 | nsymbols = 0; |
186 | for (len = 1; len <= 16; len++) | 186 | for (len = 1; len <= 16; len++) |
187 | nsymbols += bits[len]; | 187 | nsymbols += bits[len]; |
188 | if (nsymbols < 1 || nsymbols > 256) | 188 | if (nsymbols < 1 || nsymbols > 256) |
189 | ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); | 189 | ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); |
190 | 190 | ||
191 | MEMCOPY((*htblptr)->huffval, val, nsymbols * SIZEOF(UINT8)); | 191 | MEMCOPY((*htblptr)->huffval, val, nsymbols * SIZEOF(UINT8)); |
192 | 192 | ||
193 | /* Initialize sent_table FALSE so table will be written to JPEG file. */ | 193 | /* Initialize sent_table FALSE so table will be written to JPEG file. */ |
194 | (*htblptr)->sent_table = FALSE; | 194 | (*htblptr)->sent_table = FALSE; |
195 | } | 195 | } |
196 | 196 | ||
197 | 197 | ||
198 | LOCAL(void) | 198 | LOCAL(void) |
199 | std_huff_tables (j_compress_ptr cinfo) | 199 | std_huff_tables (j_compress_ptr cinfo) |
200 | /* Set up the standard Huffman tables (cf. JPEG standard section K.3) */ | 200 | /* Set up the standard Huffman tables (cf. JPEG standard section K.3) */ |
201 | /* IMPORTANT: these are only valid for 8-bit data precision! */ | 201 | /* IMPORTANT: these are only valid for 8-bit data precision! */ |
202 | { | 202 | { |
203 | static const UINT8 bits_dc_luminance[17] = | 203 | static const UINT8 bits_dc_luminance[17] = |
204 | { /* 0-base */ 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 }; | 204 | { /* 0-base */ 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 }; |
205 | static const UINT8 val_dc_luminance[] = | 205 | static const UINT8 val_dc_luminance[] = |
206 | { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; | 206 | { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; |
207 | 207 | ||
208 | static const UINT8 bits_dc_chrominance[17] = | 208 | static const UINT8 bits_dc_chrominance[17] = |
209 | { /* 0-base */ 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 }; | 209 | { /* 0-base */ 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 }; |
210 | static const UINT8 val_dc_chrominance[] = | 210 | static const UINT8 val_dc_chrominance[] = |
211 | { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; | 211 | { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; |
212 | 212 | ||
213 | static const UINT8 bits_ac_luminance[17] = | 213 | static const UINT8 bits_ac_luminance[17] = |
214 | { /* 0-base */ 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d }; | 214 | { /* 0-base */ 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d }; |
215 | static const UINT8 val_ac_luminance[] = | 215 | static const UINT8 val_ac_luminance[] = |
216 | { 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, | 216 | { 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, |
217 | 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, | 217 | 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, |
218 | 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, | 218 | 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, |
219 | 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, | 219 | 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, |
220 | 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16, | 220 | 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16, |
221 | 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28, | 221 | 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28, |
222 | 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, | 222 | 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, |
223 | 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, | 223 | 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, |
224 | 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, | 224 | 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, |
225 | 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, | 225 | 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, |
226 | 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, | 226 | 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, |
227 | 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, | 227 | 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, |
228 | 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, | 228 | 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, |
229 | 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, | 229 | 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, |
230 | 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, | 230 | 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, |
231 | 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, | 231 | 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, |
232 | 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, | 232 | 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, |
233 | 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2, | 233 | 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2, |
234 | 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, | 234 | 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, |
235 | 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, | 235 | 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, |
236 | 0xf9, 0xfa }; | 236 | 0xf9, 0xfa }; |
237 | 237 | ||
238 | static const UINT8 bits_ac_chrominance[17] = | 238 | static const UINT8 bits_ac_chrominance[17] = |
239 | { /* 0-base */ 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 }; | 239 | { /* 0-base */ 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 }; |
240 | static const UINT8 val_ac_chrominance[] = | 240 | static const UINT8 val_ac_chrominance[] = |
241 | { 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, | 241 | { 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, |
242 | 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, | 242 | 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, |
243 | 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, | 243 | 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, |
244 | 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, | 244 | 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, |
245 | 0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, | 245 | 0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, |
246 | 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, | 246 | 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, |
247 | 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, | 247 | 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, |
248 | 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, | 248 | 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, |
249 | 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, | 249 | 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, |
250 | 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, | 250 | 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, |
251 | 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, | 251 | 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, |
252 | 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, | 252 | 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, |
253 | 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, | 253 | 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, |
254 | 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, | 254 | 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, |
255 | 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, | 255 | 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, |
256 | 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, | 256 | 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, |
257 | 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, | 257 | 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, |
258 | 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, | 258 | 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, |
259 | 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, | 259 | 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, |
260 | 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, | 260 | 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, |
261 | 0xf9, 0xfa }; | 261 | 0xf9, 0xfa }; |
262 | 262 | ||
263 | add_huff_table(cinfo, &cinfo->dc_huff_tbl_ptrs[0], | 263 | add_huff_table(cinfo, &cinfo->dc_huff_tbl_ptrs[0], |
264 | bits_dc_luminance, val_dc_luminance); | 264 | bits_dc_luminance, val_dc_luminance); |
265 | add_huff_table(cinfo, &cinfo->ac_huff_tbl_ptrs[0], | 265 | add_huff_table(cinfo, &cinfo->ac_huff_tbl_ptrs[0], |
266 | bits_ac_luminance, val_ac_luminance); | 266 | bits_ac_luminance, val_ac_luminance); |
267 | add_huff_table(cinfo, &cinfo->dc_huff_tbl_ptrs[1], | 267 | add_huff_table(cinfo, &cinfo->dc_huff_tbl_ptrs[1], |
268 | bits_dc_chrominance, val_dc_chrominance); | 268 | bits_dc_chrominance, val_dc_chrominance); |
269 | add_huff_table(cinfo, &cinfo->ac_huff_tbl_ptrs[1], | 269 | add_huff_table(cinfo, &cinfo->ac_huff_tbl_ptrs[1], |
270 | bits_ac_chrominance, val_ac_chrominance); | 270 | bits_ac_chrominance, val_ac_chrominance); |
271 | } | 271 | } |
272 | 272 | ||
273 | 273 | ||
274 | /* | 274 | /* |
275 | * Default parameter setup for compression. | 275 | * Default parameter setup for compression. |
276 | * | 276 | * |
277 | * Applications that don't choose to use this routine must do their | 277 | * Applications that don't choose to use this routine must do their |
278 | * own setup of all these parameters. Alternately, you can call this | 278 | * own setup of all these parameters. Alternately, you can call this |
279 | * to establish defaults and then alter parameters selectively. This | 279 | * to establish defaults and then alter parameters selectively. This |
280 | * is the recommended approach since, if we add any new parameters, | 280 | * is the recommended approach since, if we add any new parameters, |
281 | * your code will still work (they'll be set to reasonable defaults). | 281 | * your code will still work (they'll be set to reasonable defaults). |
282 | */ | 282 | */ |
283 | 283 | ||
284 | GLOBAL(void) | 284 | GLOBAL(void) |
285 | jpeg_set_defaults (j_compress_ptr cinfo) | 285 | jpeg_set_defaults (j_compress_ptr cinfo) |
286 | { | 286 | { |
287 | int i; | 287 | int i; |
288 | 288 | ||
289 | /* Safety check to ensure start_compress not called yet. */ | 289 | /* Safety check to ensure start_compress not called yet. */ |
290 | if (cinfo->global_state != CSTATE_START) | 290 | if (cinfo->global_state != CSTATE_START) |
291 | ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); | 291 | ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); |
292 | 292 | ||
293 | /* Allocate comp_info array large enough for maximum component count. | 293 | /* Allocate comp_info array large enough for maximum component count. |
294 | * Array is made permanent in case application wants to compress | 294 | * Array is made permanent in case application wants to compress |
295 | * multiple images at same param settings. | 295 | * multiple images at same param settings. |
296 | */ | 296 | */ |
297 | if (cinfo->comp_info == NULL) | 297 | if (cinfo->comp_info == NULL) |
298 | cinfo->comp_info = (jpeg_component_info *) | 298 | cinfo->comp_info = (jpeg_component_info *) |
299 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | 299 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, |
300 | MAX_COMPONENTS * SIZEOF(jpeg_component_info)); | 300 | MAX_COMPONENTS * SIZEOF(jpeg_component_info)); |
301 | 301 | ||
302 | /* Initialize everything not dependent on the color space */ | 302 | /* Initialize everything not dependent on the color space */ |
303 | 303 | ||
304 | cinfo->scale_num = 1; /* 1:1 scaling */ | 304 | cinfo->scale_num = 1; /* 1:1 scaling */ |
305 | cinfo->scale_denom = 1; | 305 | cinfo->scale_denom = 1; |
306 | cinfo->data_precision = BITS_IN_JSAMPLE; | 306 | cinfo->data_precision = BITS_IN_JSAMPLE; |
307 | /* Set up two quantization tables using default quality of 75 */ | 307 | /* Set up two quantization tables using default quality of 75 */ |
308 | jpeg_set_quality(cinfo, 75, TRUE); | 308 | jpeg_set_quality(cinfo, 75, TRUE); |
309 | /* Set up two Huffman tables */ | 309 | /* Set up two Huffman tables */ |
310 | std_huff_tables(cinfo); | 310 | std_huff_tables(cinfo); |
311 | 311 | ||
312 | /* Initialize default arithmetic coding conditioning */ | 312 | /* Initialize default arithmetic coding conditioning */ |
313 | for (i = 0; i < NUM_ARITH_TBLS; i++) { | 313 | for (i = 0; i < NUM_ARITH_TBLS; i++) { |
314 | cinfo->arith_dc_L[i] = 0; | 314 | cinfo->arith_dc_L[i] = 0; |
315 | cinfo->arith_dc_U[i] = 1; | 315 | cinfo->arith_dc_U[i] = 1; |
316 | cinfo->arith_ac_K[i] = 5; | 316 | cinfo->arith_ac_K[i] = 5; |
317 | } | 317 | } |
318 | 318 | ||
319 | /* Default is no multiple-scan output */ | 319 | /* Default is no multiple-scan output */ |
320 | cinfo->scan_info = NULL; | 320 | cinfo->scan_info = NULL; |
321 | cinfo->num_scans = 0; | 321 | cinfo->num_scans = 0; |
322 | 322 | ||
323 | /* Expect normal source image, not raw downsampled data */ | 323 | /* Expect normal source image, not raw downsampled data */ |
324 | cinfo->raw_data_in = FALSE; | 324 | cinfo->raw_data_in = FALSE; |
325 | 325 | ||
326 | /* Use Huffman coding, not arithmetic coding, by default */ | 326 | /* Use Huffman coding, not arithmetic coding, by default */ |
327 | cinfo->arith_code = FALSE; | 327 | cinfo->arith_code = FALSE; |
328 | 328 | ||
329 | /* By default, don't do extra passes to optimize entropy coding */ | 329 | /* By default, don't do extra passes to optimize entropy coding */ |
330 | cinfo->optimize_coding = FALSE; | 330 | cinfo->optimize_coding = FALSE; |
331 | /* The standard Huffman tables are only valid for 8-bit data precision. | 331 | /* The standard Huffman tables are only valid for 8-bit data precision. |
332 | * If the precision is higher, force optimization on so that usable | 332 | * If the precision is higher, force optimization on so that usable |
333 | * tables will be computed. This test can be removed if default tables | 333 | * tables will be computed. This test can be removed if default tables |
334 | * are supplied that are valid for the desired precision. | 334 | * are supplied that are valid for the desired precision. |
335 | */ | 335 | */ |
336 | if (cinfo->data_precision > 8) | 336 | if (cinfo->data_precision > 8) |
337 | cinfo->optimize_coding = TRUE; | 337 | cinfo->optimize_coding = TRUE; |
338 | 338 | ||
339 | /* By default, use the simpler non-cosited sampling alignment */ | 339 | /* By default, use the simpler non-cosited sampling alignment */ |
340 | cinfo->CCIR601_sampling = FALSE; | 340 | cinfo->CCIR601_sampling = FALSE; |
341 | 341 | ||
342 | /* By default, apply fancy downsampling */ | 342 | /* By default, apply fancy downsampling */ |
343 | cinfo->do_fancy_downsampling = TRUE; | 343 | cinfo->do_fancy_downsampling = TRUE; |
344 | 344 | ||
345 | /* No input smoothing */ | 345 | /* No input smoothing */ |
346 | cinfo->smoothing_factor = 0; | 346 | cinfo->smoothing_factor = 0; |
347 | 347 | ||
348 | /* DCT algorithm preference */ | 348 | /* DCT algorithm preference */ |
349 | cinfo->dct_method = JDCT_DEFAULT; | 349 | cinfo->dct_method = JDCT_DEFAULT; |
350 | 350 | ||
351 | /* No restart markers */ | 351 | /* No restart markers */ |
352 | cinfo->restart_interval = 0; | 352 | cinfo->restart_interval = 0; |
353 | cinfo->restart_in_rows = 0; | 353 | cinfo->restart_in_rows = 0; |
354 | 354 | ||
355 | /* Fill in default JFIF marker parameters. Note that whether the marker | 355 | /* Fill in default JFIF marker parameters. Note that whether the marker |
356 | * will actually be written is determined by jpeg_set_colorspace. | 356 | * will actually be written is determined by jpeg_set_colorspace. |
357 | * | 357 | * |
358 | * By default, the library emits JFIF version code 1.01. | 358 | * By default, the library emits JFIF version code 1.01. |
359 | * An application that wants to emit JFIF 1.02 extension markers should set | 359 | * An application that wants to emit JFIF 1.02 extension markers should set |
360 | * JFIF_minor_version to 2. We could probably get away with just defaulting | 360 | * JFIF_minor_version to 2. We could probably get away with just defaulting |
361 | * to 1.02, but there may still be some decoders in use that will complain | 361 | * to 1.02, but there may still be some decoders in use that will complain |
362 | * about that; saying 1.01 should minimize compatibility problems. | 362 | * about that; saying 1.01 should minimize compatibility problems. |
363 | */ | 363 | */ |
364 | cinfo->JFIF_major_version = 1; /* Default JFIF version = 1.01 */ | 364 | cinfo->JFIF_major_version = 1; /* Default JFIF version = 1.01 */ |
365 | cinfo->JFIF_minor_version = 1; | 365 | cinfo->JFIF_minor_version = 1; |
366 | cinfo->density_unit = 0; /* Pixel size is unknown by default */ | 366 | cinfo->density_unit = 0; /* Pixel size is unknown by default */ |
367 | cinfo->X_density = 1; /* Pixel aspect ratio is square by default */ | 367 | cinfo->X_density = 1; /* Pixel aspect ratio is square by default */ |
368 | cinfo->Y_density = 1; | 368 | cinfo->Y_density = 1; |
369 | 369 | ||
370 | /* Choose JPEG colorspace based on input space, set defaults accordingly */ | 370 | /* Choose JPEG colorspace based on input space, set defaults accordingly */ |
371 | 371 | ||
372 | jpeg_default_colorspace(cinfo); | 372 | jpeg_default_colorspace(cinfo); |
373 | } | 373 | } |
374 | 374 | ||
375 | 375 | ||
376 | /* | 376 | /* |
377 | * Select an appropriate JPEG colorspace for in_color_space. | 377 | * Select an appropriate JPEG colorspace for in_color_space. |
378 | */ | 378 | */ |
379 | 379 | ||
380 | GLOBAL(void) | 380 | GLOBAL(void) |
381 | jpeg_default_colorspace (j_compress_ptr cinfo) | 381 | jpeg_default_colorspace (j_compress_ptr cinfo) |
382 | { | 382 | { |
383 | switch (cinfo->in_color_space) { | 383 | switch (cinfo->in_color_space) { |
384 | case JCS_GRAYSCALE: | 384 | case JCS_GRAYSCALE: |
385 | jpeg_set_colorspace(cinfo, JCS_GRAYSCALE); | 385 | jpeg_set_colorspace(cinfo, JCS_GRAYSCALE); |
386 | break; | 386 | break; |
387 | case JCS_RGB: | 387 | case JCS_RGB: |
388 | jpeg_set_colorspace(cinfo, JCS_YCbCr); | 388 | jpeg_set_colorspace(cinfo, JCS_YCbCr); |
389 | break; | 389 | break; |
390 | case JCS_YCbCr: | 390 | case JCS_YCbCr: |
391 | jpeg_set_colorspace(cinfo, JCS_YCbCr); | 391 | jpeg_set_colorspace(cinfo, JCS_YCbCr); |
392 | break; | 392 | break; |
393 | case JCS_CMYK: | 393 | case JCS_CMYK: |
394 | jpeg_set_colorspace(cinfo, JCS_CMYK); /* By default, no translation */ | 394 | jpeg_set_colorspace(cinfo, JCS_CMYK); /* By default, no translation */ |
395 | break; | 395 | break; |
396 | case JCS_YCCK: | 396 | case JCS_YCCK: |
397 | jpeg_set_colorspace(cinfo, JCS_YCCK); | 397 | jpeg_set_colorspace(cinfo, JCS_YCCK); |
398 | break; | 398 | break; |
399 | case JCS_UNKNOWN: | 399 | case JCS_UNKNOWN: |
400 | jpeg_set_colorspace(cinfo, JCS_UNKNOWN); | 400 | jpeg_set_colorspace(cinfo, JCS_UNKNOWN); |
401 | break; | 401 | break; |
402 | default: | 402 | default: |
403 | ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); | 403 | ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); |
404 | } | 404 | } |
405 | } | 405 | } |
406 | 406 | ||
407 | 407 | ||
408 | /* | 408 | /* |
409 | * Set the JPEG colorspace, and choose colorspace-dependent default values. | 409 | * Set the JPEG colorspace, and choose colorspace-dependent default values. |
410 | */ | 410 | */ |
411 | 411 | ||
412 | GLOBAL(void) | 412 | GLOBAL(void) |
413 | jpeg_set_colorspace (j_compress_ptr cinfo, J_COLOR_SPACE colorspace) | 413 | jpeg_set_colorspace (j_compress_ptr cinfo, J_COLOR_SPACE colorspace) |
414 | { | 414 | { |
415 | jpeg_component_info * compptr; | 415 | jpeg_component_info * compptr; |
416 | int ci; | 416 | int ci; |
417 | 417 | ||
418 | #define SET_COMP(index,id,hsamp,vsamp,quant,dctbl,actbl) \ | 418 | #define SET_COMP(index,id,hsamp,vsamp,quant,dctbl,actbl) \ |
419 | (compptr = &cinfo->comp_info[index], \ | 419 | (compptr = &cinfo->comp_info[index], \ |
420 | compptr->component_id = (id), \ | 420 | compptr->component_id = (id), \ |
421 | compptr->h_samp_factor = (hsamp), \ | 421 | compptr->h_samp_factor = (hsamp), \ |
422 | compptr->v_samp_factor = (vsamp), \ | 422 | compptr->v_samp_factor = (vsamp), \ |
423 | compptr->quant_tbl_no = (quant), \ | 423 | compptr->quant_tbl_no = (quant), \ |
424 | compptr->dc_tbl_no = (dctbl), \ | 424 | compptr->dc_tbl_no = (dctbl), \ |
425 | compptr->ac_tbl_no = (actbl) ) | 425 | compptr->ac_tbl_no = (actbl) ) |
426 | 426 | ||
427 | /* Safety check to ensure start_compress not called yet. */ | 427 | /* Safety check to ensure start_compress not called yet. */ |
428 | if (cinfo->global_state != CSTATE_START) | 428 | if (cinfo->global_state != CSTATE_START) |
429 | ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); | 429 | ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); |
430 | 430 | ||
431 | /* For all colorspaces, we use Q and Huff tables 0 for luminance components, | 431 | /* For all colorspaces, we use Q and Huff tables 0 for luminance components, |
432 | * tables 1 for chrominance components. | 432 | * tables 1 for chrominance components. |
433 | */ | 433 | */ |
434 | 434 | ||
435 | cinfo->jpeg_color_space = colorspace; | 435 | cinfo->jpeg_color_space = colorspace; |
436 | 436 | ||
437 | cinfo->write_JFIF_header = FALSE; /* No marker for non-JFIF colorspaces */ | 437 | cinfo->write_JFIF_header = FALSE; /* No marker for non-JFIF colorspaces */ |
438 | cinfo->write_Adobe_marker = FALSE; /* write no Adobe marker by default */ | 438 | cinfo->write_Adobe_marker = FALSE; /* write no Adobe marker by default */ |
439 | 439 | ||
440 | switch (colorspace) { | 440 | switch (colorspace) { |
441 | case JCS_GRAYSCALE: | 441 | case JCS_GRAYSCALE: |
442 | cinfo->write_JFIF_header = TRUE; /* Write a JFIF marker */ | 442 | cinfo->write_JFIF_header = TRUE; /* Write a JFIF marker */ |
443 | cinfo->num_components = 1; | 443 | cinfo->num_components = 1; |
444 | /* JFIF specifies component ID 1 */ | 444 | /* JFIF specifies component ID 1 */ |
445 | SET_COMP(0, 1, 1,1, 0, 0,0); | 445 | SET_COMP(0, 1, 1,1, 0, 0,0); |
446 | break; | 446 | break; |
447 | case JCS_RGB: | 447 | case JCS_RGB: |
448 | cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag RGB */ | 448 | cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag RGB */ |
449 | cinfo->num_components = 3; | 449 | cinfo->num_components = 3; |
450 | SET_COMP(0, 0x52 /* 'R' */, 1,1, 0, 0,0); | 450 | SET_COMP(0, 0x52 /* 'R' */, 1,1, 0, 0,0); |
451 | SET_COMP(1, 0x47 /* 'G' */, 1,1, 0, 0,0); | 451 | SET_COMP(1, 0x47 /* 'G' */, 1,1, 0, 0,0); |
452 | SET_COMP(2, 0x42 /* 'B' */, 1,1, 0, 0,0); | 452 | SET_COMP(2, 0x42 /* 'B' */, 1,1, 0, 0,0); |
453 | break; | 453 | break; |
454 | case JCS_YCbCr: | 454 | case JCS_YCbCr: |
455 | cinfo->write_JFIF_header = TRUE; /* Write a JFIF marker */ | 455 | cinfo->write_JFIF_header = TRUE; /* Write a JFIF marker */ |
456 | cinfo->num_components = 3; | 456 | cinfo->num_components = 3; |
457 | /* JFIF specifies component IDs 1,2,3 */ | 457 | /* JFIF specifies component IDs 1,2,3 */ |
458 | /* We default to 2x2 subsamples of chrominance */ | 458 | /* We default to 2x2 subsamples of chrominance */ |
459 | SET_COMP(0, 1, 2,2, 0, 0,0); | 459 | SET_COMP(0, 1, 2,2, 0, 0,0); |
460 | SET_COMP(1, 2, 1,1, 1, 1,1); | 460 | SET_COMP(1, 2, 1,1, 1, 1,1); |
461 | SET_COMP(2, 3, 1,1, 1, 1,1); | 461 | SET_COMP(2, 3, 1,1, 1, 1,1); |
462 | break; | 462 | break; |
463 | case JCS_CMYK: | 463 | case JCS_CMYK: |
464 | cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag CMYK */ | 464 | cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag CMYK */ |
465 | cinfo->num_components = 4; | 465 | cinfo->num_components = 4; |
466 | SET_COMP(0, 0x43 /* 'C' */, 1,1, 0, 0,0); | 466 | SET_COMP(0, 0x43 /* 'C' */, 1,1, 0, 0,0); |
467 | SET_COMP(1, 0x4D /* 'M' */, 1,1, 0, 0,0); | 467 | SET_COMP(1, 0x4D /* 'M' */, 1,1, 0, 0,0); |
468 | SET_COMP(2, 0x59 /* 'Y' */, 1,1, 0, 0,0); | 468 | SET_COMP(2, 0x59 /* 'Y' */, 1,1, 0, 0,0); |
469 | SET_COMP(3, 0x4B /* 'K' */, 1,1, 0, 0,0); | 469 | SET_COMP(3, 0x4B /* 'K' */, 1,1, 0, 0,0); |
470 | break; | 470 | break; |
471 | case JCS_YCCK: | 471 | case JCS_YCCK: |
472 | cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag YCCK */ | 472 | cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag YCCK */ |
473 | cinfo->num_components = 4; | 473 | cinfo->num_components = 4; |
474 | SET_COMP(0, 1, 2,2, 0, 0,0); | 474 | SET_COMP(0, 1, 2,2, 0, 0,0); |
475 | SET_COMP(1, 2, 1,1, 1, 1,1); | 475 | SET_COMP(1, 2, 1,1, 1, 1,1); |
476 | SET_COMP(2, 3, 1,1, 1, 1,1); | 476 | SET_COMP(2, 3, 1,1, 1, 1,1); |
477 | SET_COMP(3, 4, 2,2, 0, 0,0); | 477 | SET_COMP(3, 4, 2,2, 0, 0,0); |
478 | break; | 478 | break; |
479 | case JCS_UNKNOWN: | 479 | case JCS_UNKNOWN: |
480 | cinfo->num_components = cinfo->input_components; | 480 | cinfo->num_components = cinfo->input_components; |
481 | if (cinfo->num_components < 1 || cinfo->num_components > MAX_COMPONENTS) | 481 | if (cinfo->num_components < 1 || cinfo->num_components > MAX_COMPONENTS) |
482 | ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components, | 482 | ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components, |
483 | MAX_COMPONENTS); | 483 | MAX_COMPONENTS); |
484 | for (ci = 0; ci < cinfo->num_components; ci++) { | 484 | for (ci = 0; ci < cinfo->num_components; ci++) { |
485 | SET_COMP(ci, ci, 1,1, 0, 0,0); | 485 | SET_COMP(ci, ci, 1,1, 0, 0,0); |
486 | } | 486 | } |
487 | break; | 487 | break; |
488 | default: | 488 | default: |
489 | ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); | 489 | ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); |
490 | } | 490 | } |
491 | } | 491 | } |
492 | 492 | ||
493 | 493 | ||
494 | #ifdef C_PROGRESSIVE_SUPPORTED | 494 | #ifdef C_PROGRESSIVE_SUPPORTED |
495 | 495 | ||
496 | LOCAL(jpeg_scan_info *) | 496 | LOCAL(jpeg_scan_info *) |
497 | fill_a_scan (jpeg_scan_info * scanptr, int ci, | 497 | fill_a_scan (jpeg_scan_info * scanptr, int ci, |
498 | int Ss, int Se, int Ah, int Al) | 498 | int Ss, int Se, int Ah, int Al) |
499 | /* Support routine: generate one scan for specified component */ | 499 | /* Support routine: generate one scan for specified component */ |
500 | { | 500 | { |
501 | scanptr->comps_in_scan = 1; | 501 | scanptr->comps_in_scan = 1; |
502 | scanptr->component_index[0] = ci; | 502 | scanptr->component_index[0] = ci; |
503 | scanptr->Ss = Ss; | 503 | scanptr->Ss = Ss; |
504 | scanptr->Se = Se; | 504 | scanptr->Se = Se; |
505 | scanptr->Ah = Ah; | 505 | scanptr->Ah = Ah; |
506 | scanptr->Al = Al; | 506 | scanptr->Al = Al; |
507 | scanptr++; | 507 | scanptr++; |
508 | return scanptr; | 508 | return scanptr; |
509 | } | 509 | } |
510 | 510 | ||
511 | LOCAL(jpeg_scan_info *) | 511 | LOCAL(jpeg_scan_info *) |
512 | fill_scans (jpeg_scan_info * scanptr, int ncomps, | 512 | fill_scans (jpeg_scan_info * scanptr, int ncomps, |
513 | int Ss, int Se, int Ah, int Al) | 513 | int Ss, int Se, int Ah, int Al) |
514 | /* Support routine: generate one scan for each component */ | 514 | /* Support routine: generate one scan for each component */ |
515 | { | 515 | { |
516 | int ci; | 516 | int ci; |
517 | 517 | ||
518 | for (ci = 0; ci < ncomps; ci++) { | 518 | for (ci = 0; ci < ncomps; ci++) { |
519 | scanptr->comps_in_scan = 1; | 519 | scanptr->comps_in_scan = 1; |
520 | scanptr->component_index[0] = ci; | 520 | scanptr->component_index[0] = ci; |
521 | scanptr->Ss = Ss; | 521 | scanptr->Ss = Ss; |
522 | scanptr->Se = Se; | 522 | scanptr->Se = Se; |
523 | scanptr->Ah = Ah; | 523 | scanptr->Ah = Ah; |
524 | scanptr->Al = Al; | 524 | scanptr->Al = Al; |
525 | scanptr++; | 525 | scanptr++; |
526 | } | 526 | } |
527 | return scanptr; | 527 | return scanptr; |
528 | } | 528 | } |
529 | 529 | ||
530 | LOCAL(jpeg_scan_info *) | 530 | LOCAL(jpeg_scan_info *) |
531 | fill_dc_scans (jpeg_scan_info * scanptr, int ncomps, int Ah, int Al) | 531 | fill_dc_scans (jpeg_scan_info * scanptr, int ncomps, int Ah, int Al) |
532 | /* Support routine: generate interleaved DC scan if possible, else N scans */ | 532 | /* Support routine: generate interleaved DC scan if possible, else N scans */ |
533 | { | 533 | { |
534 | int ci; | 534 | int ci; |
535 | 535 | ||
536 | if (ncomps <= MAX_COMPS_IN_SCAN) { | 536 | if (ncomps <= MAX_COMPS_IN_SCAN) { |
537 | /* Single interleaved DC scan */ | 537 | /* Single interleaved DC scan */ |
538 | scanptr->comps_in_scan = ncomps; | 538 | scanptr->comps_in_scan = ncomps; |
539 | for (ci = 0; ci < ncomps; ci++) | 539 | for (ci = 0; ci < ncomps; ci++) |
540 | scanptr->component_index[ci] = ci; | 540 | scanptr->component_index[ci] = ci; |
541 | scanptr->Ss = scanptr->Se = 0; | 541 | scanptr->Ss = scanptr->Se = 0; |
542 | scanptr->Ah = Ah; | 542 | scanptr->Ah = Ah; |
543 | scanptr->Al = Al; | 543 | scanptr->Al = Al; |
544 | scanptr++; | 544 | scanptr++; |
545 | } else { | 545 | } else { |
546 | /* Noninterleaved DC scan for each component */ | 546 | /* Noninterleaved DC scan for each component */ |
547 | scanptr = fill_scans(scanptr, ncomps, 0, 0, Ah, Al); | 547 | scanptr = fill_scans(scanptr, ncomps, 0, 0, Ah, Al); |
548 | } | 548 | } |
549 | return scanptr; | 549 | return scanptr; |
550 | } | 550 | } |
551 | 551 | ||
552 | 552 | ||
553 | /* | 553 | /* |
554 | * Create a recommended progressive-JPEG script. | 554 | * Create a recommended progressive-JPEG script. |
555 | * cinfo->num_components and cinfo->jpeg_color_space must be correct. | 555 | * cinfo->num_components and cinfo->jpeg_color_space must be correct. |
556 | */ | 556 | */ |
557 | 557 | ||
558 | GLOBAL(void) | 558 | GLOBAL(void) |
559 | jpeg_simple_progression (j_compress_ptr cinfo) | 559 | jpeg_simple_progression (j_compress_ptr cinfo) |
560 | { | 560 | { |
561 | int ncomps = cinfo->num_components; | 561 | int ncomps = cinfo->num_components; |
562 | int nscans; | 562 | int nscans; |
563 | jpeg_scan_info * scanptr; | 563 | jpeg_scan_info * scanptr; |
564 | 564 | ||
565 | /* Safety check to ensure start_compress not called yet. */ | 565 | /* Safety check to ensure start_compress not called yet. */ |
566 | if (cinfo->global_state != CSTATE_START) | 566 | if (cinfo->global_state != CSTATE_START) |
567 | ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); | 567 | ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); |
568 | 568 | ||
569 | /* Figure space needed for script. Calculation must match code below! */ | 569 | /* Figure space needed for script. Calculation must match code below! */ |
570 | if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) { | 570 | if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) { |
571 | /* Custom script for YCbCr color images. */ | 571 | /* Custom script for YCbCr color images. */ |
572 | nscans = 10; | 572 | nscans = 10; |
573 | } else { | 573 | } else { |
574 | /* All-purpose script for other color spaces. */ | 574 | /* All-purpose script for other color spaces. */ |
575 | if (ncomps > MAX_COMPS_IN_SCAN) | 575 | if (ncomps > MAX_COMPS_IN_SCAN) |
576 | nscans = 6 * ncomps; /* 2 DC + 4 AC scans per component */ | 576 | nscans = 6 * ncomps; /* 2 DC + 4 AC scans per component */ |
577 | else | 577 | else |
578 | nscans = 2 + 4 * ncomps; /* 2 DC scans; 4 AC scans per component */ | 578 | nscans = 2 + 4 * ncomps; /* 2 DC scans; 4 AC scans per component */ |
579 | } | 579 | } |
580 | 580 | ||
581 | /* Allocate space for script. | 581 | /* Allocate space for script. |
582 | * We need to put it in the permanent pool in case the application performs | 582 | * We need to put it in the permanent pool in case the application performs |
583 | * multiple compressions without changing the settings. To avoid a memory | 583 | * multiple compressions without changing the settings. To avoid a memory |
584 | * leak if jpeg_simple_progression is called repeatedly for the same JPEG | 584 | * leak if jpeg_simple_progression is called repeatedly for the same JPEG |
585 | * object, we try to re-use previously allocated space, and we allocate | 585 | * object, we try to re-use previously allocated space, and we allocate |
586 | * enough space to handle YCbCr even if initially asked for grayscale. | 586 | * enough space to handle YCbCr even if initially asked for grayscale. |
587 | */ | 587 | */ |
588 | if (cinfo->script_space == NULL || cinfo->script_space_size < nscans) { | 588 | if (cinfo->script_space == NULL || cinfo->script_space_size < nscans) { |
589 | cinfo->script_space_size = MAX(nscans, 10); | 589 | cinfo->script_space_size = MAX(nscans, 10); |
590 | cinfo->script_space = (jpeg_scan_info *) | 590 | cinfo->script_space = (jpeg_scan_info *) |
591 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | 591 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, |
592 | cinfo->script_space_size * SIZEOF(jpeg_scan_info)); | 592 | cinfo->script_space_size * SIZEOF(jpeg_scan_info)); |
593 | } | 593 | } |
594 | scanptr = cinfo->script_space; | 594 | scanptr = cinfo->script_space; |
595 | cinfo->scan_info = scanptr; | 595 | cinfo->scan_info = scanptr; |
596 | cinfo->num_scans = nscans; | 596 | cinfo->num_scans = nscans; |
597 | 597 | ||
598 | if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) { | 598 | if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) { |
599 | /* Custom script for YCbCr color images. */ | 599 | /* Custom script for YCbCr color images. */ |
600 | /* Initial DC scan */ | 600 | /* Initial DC scan */ |
601 | scanptr = fill_dc_scans(scanptr, ncomps, 0, 1); | 601 | scanptr = fill_dc_scans(scanptr, ncomps, 0, 1); |
602 | /* Initial AC scan: get some luma data out in a hurry */ | 602 | /* Initial AC scan: get some luma data out in a hurry */ |
603 | scanptr = fill_a_scan(scanptr, 0, 1, 5, 0, 2); | 603 | scanptr = fill_a_scan(scanptr, 0, 1, 5, 0, 2); |
604 | /* Chroma data is too small to be worth expending many scans on */ | 604 | /* Chroma data is too small to be worth expending many scans on */ |
605 | scanptr = fill_a_scan(scanptr, 2, 1, 63, 0, 1); | 605 | scanptr = fill_a_scan(scanptr, 2, 1, 63, 0, 1); |
606 | scanptr = fill_a_scan(scanptr, 1, 1, 63, 0, 1); | 606 | scanptr = fill_a_scan(scanptr, 1, 1, 63, 0, 1); |
607 | /* Complete spectral selection for luma AC */ | 607 | /* Complete spectral selection for luma AC */ |
608 | scanptr = fill_a_scan(scanptr, 0, 6, 63, 0, 2); | 608 | scanptr = fill_a_scan(scanptr, 0, 6, 63, 0, 2); |
609 | /* Refine next bit of luma AC */ | 609 | /* Refine next bit of luma AC */ |
610 | scanptr = fill_a_scan(scanptr, 0, 1, 63, 2, 1); | 610 | scanptr = fill_a_scan(scanptr, 0, 1, 63, 2, 1); |
611 | /* Finish DC successive approximation */ | 611 | /* Finish DC successive approximation */ |
612 | scanptr = fill_dc_scans(scanptr, ncomps, 1, 0); | 612 | scanptr = fill_dc_scans(scanptr, ncomps, 1, 0); |
613 | /* Finish AC successive approximation */ | 613 | /* Finish AC successive approximation */ |
614 | scanptr = fill_a_scan(scanptr, 2, 1, 63, 1, 0); | 614 | scanptr = fill_a_scan(scanptr, 2, 1, 63, 1, 0); |
615 | scanptr = fill_a_scan(scanptr, 1, 1, 63, 1, 0); | 615 | scanptr = fill_a_scan(scanptr, 1, 1, 63, 1, 0); |
616 | /* Luma bottom bit comes last since it's usually largest scan */ | 616 | /* Luma bottom bit comes last since it's usually largest scan */ |
617 | scanptr = fill_a_scan(scanptr, 0, 1, 63, 1, 0); | 617 | scanptr = fill_a_scan(scanptr, 0, 1, 63, 1, 0); |
618 | } else { | 618 | } else { |
619 | /* All-purpose script for other color spaces. */ | 619 | /* All-purpose script for other color spaces. */ |
620 | /* Successive approximation first pass */ | 620 | /* Successive approximation first pass */ |
621 | scanptr = fill_dc_scans(scanptr, ncomps, 0, 1); | 621 | scanptr = fill_dc_scans(scanptr, ncomps, 0, 1); |
622 | scanptr = fill_scans(scanptr, ncomps, 1, 5, 0, 2); | 622 | scanptr = fill_scans(scanptr, ncomps, 1, 5, 0, 2); |
623 | scanptr = fill_scans(scanptr, ncomps, 6, 63, 0, 2); | 623 | scanptr = fill_scans(scanptr, ncomps, 6, 63, 0, 2); |
624 | /* Successive approximation second pass */ | 624 | /* Successive approximation second pass */ |
625 | scanptr = fill_scans(scanptr, ncomps, 1, 63, 2, 1); | 625 | scanptr = fill_scans(scanptr, ncomps, 1, 63, 2, 1); |
626 | /* Successive approximation final pass */ | 626 | /* Successive approximation final pass */ |
627 | scanptr = fill_dc_scans(scanptr, ncomps, 1, 0); | 627 | scanptr = fill_dc_scans(scanptr, ncomps, 1, 0); |
628 | scanptr = fill_scans(scanptr, ncomps, 1, 63, 1, 0); | 628 | scanptr = fill_scans(scanptr, ncomps, 1, 63, 1, 0); |
629 | } | 629 | } |
630 | } | 630 | } |
631 | 631 | ||
632 | #endif /* C_PROGRESSIVE_SUPPORTED */ | 632 | #endif /* C_PROGRESSIVE_SUPPORTED */ |