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author | David Walter Seikel | 2013-01-13 18:54:10 +1000 |
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committer | David Walter Seikel | 2013-01-13 18:54:10 +1000 |
commit | 959831f4ef5a3e797f576c3de08cd65032c997ad (patch) | |
tree | e7351908be5995f0b325b2ebeaa02d5a34b82583 /libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jdpostct.c | |
parent | Add info about changes to Irrlicht. (diff) | |
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Remove damned ancient DOS line endings from Irrlicht. Hopefully I did not go overboard.
Diffstat (limited to 'libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jdpostct.c')
-rw-r--r-- | libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jdpostct.c | 580 |
1 files changed, 290 insertions, 290 deletions
diff --git a/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jdpostct.c b/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jdpostct.c index 7ba9eed..571563d 100644 --- a/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jdpostct.c +++ b/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jdpostct.c | |||
@@ -1,290 +1,290 @@ | |||
1 | /* | 1 | /* |
2 | * jdpostct.c | 2 | * jdpostct.c |
3 | * | 3 | * |
4 | * Copyright (C) 1994-1996, Thomas G. Lane. | 4 | * Copyright (C) 1994-1996, Thomas G. Lane. |
5 | * This file is part of the Independent JPEG Group's software. | 5 | * This file is part of the Independent JPEG Group's software. |
6 | * For conditions of distribution and use, see the accompanying README file. | 6 | * For conditions of distribution and use, see the accompanying README file. |
7 | * | 7 | * |
8 | * This file contains the decompression postprocessing controller. | 8 | * This file contains the decompression postprocessing controller. |
9 | * This controller manages the upsampling, color conversion, and color | 9 | * This controller manages the upsampling, color conversion, and color |
10 | * quantization/reduction steps; specifically, it controls the buffering | 10 | * quantization/reduction steps; specifically, it controls the buffering |
11 | * between upsample/color conversion and color quantization/reduction. | 11 | * between upsample/color conversion and color quantization/reduction. |
12 | * | 12 | * |
13 | * If no color quantization/reduction is required, then this module has no | 13 | * If no color quantization/reduction is required, then this module has no |
14 | * work to do, and it just hands off to the upsample/color conversion code. | 14 | * work to do, and it just hands off to the upsample/color conversion code. |
15 | * An integrated upsample/convert/quantize process would replace this module | 15 | * An integrated upsample/convert/quantize process would replace this module |
16 | * entirely. | 16 | * entirely. |
17 | */ | 17 | */ |
18 | 18 | ||
19 | #define JPEG_INTERNALS | 19 | #define JPEG_INTERNALS |
20 | #include "jinclude.h" | 20 | #include "jinclude.h" |
21 | #include "jpeglib.h" | 21 | #include "jpeglib.h" |
22 | 22 | ||
23 | 23 | ||
24 | /* Private buffer controller object */ | 24 | /* Private buffer controller object */ |
25 | 25 | ||
26 | typedef struct { | 26 | typedef struct { |
27 | struct jpeg_d_post_controller pub; /* public fields */ | 27 | struct jpeg_d_post_controller pub; /* public fields */ |
28 | 28 | ||
29 | /* Color quantization source buffer: this holds output data from | 29 | /* Color quantization source buffer: this holds output data from |
30 | * the upsample/color conversion step to be passed to the quantizer. | 30 | * the upsample/color conversion step to be passed to the quantizer. |
31 | * For two-pass color quantization, we need a full-image buffer; | 31 | * For two-pass color quantization, we need a full-image buffer; |
32 | * for one-pass operation, a strip buffer is sufficient. | 32 | * for one-pass operation, a strip buffer is sufficient. |
33 | */ | 33 | */ |
34 | jvirt_sarray_ptr whole_image; /* virtual array, or NULL if one-pass */ | 34 | jvirt_sarray_ptr whole_image; /* virtual array, or NULL if one-pass */ |
35 | JSAMPARRAY buffer; /* strip buffer, or current strip of virtual */ | 35 | JSAMPARRAY buffer; /* strip buffer, or current strip of virtual */ |
36 | JDIMENSION strip_height; /* buffer size in rows */ | 36 | JDIMENSION strip_height; /* buffer size in rows */ |
37 | /* for two-pass mode only: */ | 37 | /* for two-pass mode only: */ |
38 | JDIMENSION starting_row; /* row # of first row in current strip */ | 38 | JDIMENSION starting_row; /* row # of first row in current strip */ |
39 | JDIMENSION next_row; /* index of next row to fill/empty in strip */ | 39 | JDIMENSION next_row; /* index of next row to fill/empty in strip */ |
40 | } my_post_controller; | 40 | } my_post_controller; |
41 | 41 | ||
42 | typedef my_post_controller * my_post_ptr; | 42 | typedef my_post_controller * my_post_ptr; |
43 | 43 | ||
44 | 44 | ||
45 | /* Forward declarations */ | 45 | /* Forward declarations */ |
46 | METHODDEF(void) post_process_1pass | 46 | METHODDEF(void) post_process_1pass |
47 | JPP((j_decompress_ptr cinfo, | 47 | JPP((j_decompress_ptr cinfo, |
48 | JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, | 48 | JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, |
49 | JDIMENSION in_row_groups_avail, | 49 | JDIMENSION in_row_groups_avail, |
50 | JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, | 50 | JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, |
51 | JDIMENSION out_rows_avail)); | 51 | JDIMENSION out_rows_avail)); |
52 | #ifdef QUANT_2PASS_SUPPORTED | 52 | #ifdef QUANT_2PASS_SUPPORTED |
53 | METHODDEF(void) post_process_prepass | 53 | METHODDEF(void) post_process_prepass |
54 | JPP((j_decompress_ptr cinfo, | 54 | JPP((j_decompress_ptr cinfo, |
55 | JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, | 55 | JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, |
56 | JDIMENSION in_row_groups_avail, | 56 | JDIMENSION in_row_groups_avail, |
57 | JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, | 57 | JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, |
58 | JDIMENSION out_rows_avail)); | 58 | JDIMENSION out_rows_avail)); |
59 | METHODDEF(void) post_process_2pass | 59 | METHODDEF(void) post_process_2pass |
60 | JPP((j_decompress_ptr cinfo, | 60 | JPP((j_decompress_ptr cinfo, |
61 | JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, | 61 | JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, |
62 | JDIMENSION in_row_groups_avail, | 62 | JDIMENSION in_row_groups_avail, |
63 | JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, | 63 | JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, |
64 | JDIMENSION out_rows_avail)); | 64 | JDIMENSION out_rows_avail)); |
65 | #endif | 65 | #endif |
66 | 66 | ||
67 | 67 | ||
68 | /* | 68 | /* |
69 | * Initialize for a processing pass. | 69 | * Initialize for a processing pass. |
70 | */ | 70 | */ |
71 | 71 | ||
72 | METHODDEF(void) | 72 | METHODDEF(void) |
73 | start_pass_dpost (j_decompress_ptr cinfo, J_BUF_MODE pass_mode) | 73 | start_pass_dpost (j_decompress_ptr cinfo, J_BUF_MODE pass_mode) |
74 | { | 74 | { |
75 | my_post_ptr post = (my_post_ptr) cinfo->post; | 75 | my_post_ptr post = (my_post_ptr) cinfo->post; |
76 | 76 | ||
77 | switch (pass_mode) { | 77 | switch (pass_mode) { |
78 | case JBUF_PASS_THRU: | 78 | case JBUF_PASS_THRU: |
79 | if (cinfo->quantize_colors) { | 79 | if (cinfo->quantize_colors) { |
80 | /* Single-pass processing with color quantization. */ | 80 | /* Single-pass processing with color quantization. */ |
81 | post->pub.post_process_data = post_process_1pass; | 81 | post->pub.post_process_data = post_process_1pass; |
82 | /* We could be doing buffered-image output before starting a 2-pass | 82 | /* We could be doing buffered-image output before starting a 2-pass |
83 | * color quantization; in that case, jinit_d_post_controller did not | 83 | * color quantization; in that case, jinit_d_post_controller did not |
84 | * allocate a strip buffer. Use the virtual-array buffer as workspace. | 84 | * allocate a strip buffer. Use the virtual-array buffer as workspace. |
85 | */ | 85 | */ |
86 | if (post->buffer == NULL) { | 86 | if (post->buffer == NULL) { |
87 | post->buffer = (*cinfo->mem->access_virt_sarray) | 87 | post->buffer = (*cinfo->mem->access_virt_sarray) |
88 | ((j_common_ptr) cinfo, post->whole_image, | 88 | ((j_common_ptr) cinfo, post->whole_image, |
89 | (JDIMENSION) 0, post->strip_height, TRUE); | 89 | (JDIMENSION) 0, post->strip_height, TRUE); |
90 | } | 90 | } |
91 | } else { | 91 | } else { |
92 | /* For single-pass processing without color quantization, | 92 | /* For single-pass processing without color quantization, |
93 | * I have no work to do; just call the upsampler directly. | 93 | * I have no work to do; just call the upsampler directly. |
94 | */ | 94 | */ |
95 | post->pub.post_process_data = cinfo->upsample->upsample; | 95 | post->pub.post_process_data = cinfo->upsample->upsample; |
96 | } | 96 | } |
97 | break; | 97 | break; |
98 | #ifdef QUANT_2PASS_SUPPORTED | 98 | #ifdef QUANT_2PASS_SUPPORTED |
99 | case JBUF_SAVE_AND_PASS: | 99 | case JBUF_SAVE_AND_PASS: |
100 | /* First pass of 2-pass quantization */ | 100 | /* First pass of 2-pass quantization */ |
101 | if (post->whole_image == NULL) | 101 | if (post->whole_image == NULL) |
102 | ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); | 102 | ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); |
103 | post->pub.post_process_data = post_process_prepass; | 103 | post->pub.post_process_data = post_process_prepass; |
104 | break; | 104 | break; |
105 | case JBUF_CRANK_DEST: | 105 | case JBUF_CRANK_DEST: |
106 | /* Second pass of 2-pass quantization */ | 106 | /* Second pass of 2-pass quantization */ |
107 | if (post->whole_image == NULL) | 107 | if (post->whole_image == NULL) |
108 | ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); | 108 | ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); |
109 | post->pub.post_process_data = post_process_2pass; | 109 | post->pub.post_process_data = post_process_2pass; |
110 | break; | 110 | break; |
111 | #endif /* QUANT_2PASS_SUPPORTED */ | 111 | #endif /* QUANT_2PASS_SUPPORTED */ |
112 | default: | 112 | default: |
113 | ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); | 113 | ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); |
114 | break; | 114 | break; |
115 | } | 115 | } |
116 | post->starting_row = post->next_row = 0; | 116 | post->starting_row = post->next_row = 0; |
117 | } | 117 | } |
118 | 118 | ||
119 | 119 | ||
120 | /* | 120 | /* |
121 | * Process some data in the one-pass (strip buffer) case. | 121 | * Process some data in the one-pass (strip buffer) case. |
122 | * This is used for color precision reduction as well as one-pass quantization. | 122 | * This is used for color precision reduction as well as one-pass quantization. |
123 | */ | 123 | */ |
124 | 124 | ||
125 | METHODDEF(void) | 125 | METHODDEF(void) |
126 | post_process_1pass (j_decompress_ptr cinfo, | 126 | post_process_1pass (j_decompress_ptr cinfo, |
127 | JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, | 127 | JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, |
128 | JDIMENSION in_row_groups_avail, | 128 | JDIMENSION in_row_groups_avail, |
129 | JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, | 129 | JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, |
130 | JDIMENSION out_rows_avail) | 130 | JDIMENSION out_rows_avail) |
131 | { | 131 | { |
132 | my_post_ptr post = (my_post_ptr) cinfo->post; | 132 | my_post_ptr post = (my_post_ptr) cinfo->post; |
133 | JDIMENSION num_rows, max_rows; | 133 | JDIMENSION num_rows, max_rows; |
134 | 134 | ||
135 | /* Fill the buffer, but not more than what we can dump out in one go. */ | 135 | /* Fill the buffer, but not more than what we can dump out in one go. */ |
136 | /* Note we rely on the upsampler to detect bottom of image. */ | 136 | /* Note we rely on the upsampler to detect bottom of image. */ |
137 | max_rows = out_rows_avail - *out_row_ctr; | 137 | max_rows = out_rows_avail - *out_row_ctr; |
138 | if (max_rows > post->strip_height) | 138 | if (max_rows > post->strip_height) |
139 | max_rows = post->strip_height; | 139 | max_rows = post->strip_height; |
140 | num_rows = 0; | 140 | num_rows = 0; |
141 | (*cinfo->upsample->upsample) (cinfo, | 141 | (*cinfo->upsample->upsample) (cinfo, |
142 | input_buf, in_row_group_ctr, in_row_groups_avail, | 142 | input_buf, in_row_group_ctr, in_row_groups_avail, |
143 | post->buffer, &num_rows, max_rows); | 143 | post->buffer, &num_rows, max_rows); |
144 | /* Quantize and emit data. */ | 144 | /* Quantize and emit data. */ |
145 | (*cinfo->cquantize->color_quantize) (cinfo, | 145 | (*cinfo->cquantize->color_quantize) (cinfo, |
146 | post->buffer, output_buf + *out_row_ctr, (int) num_rows); | 146 | post->buffer, output_buf + *out_row_ctr, (int) num_rows); |
147 | *out_row_ctr += num_rows; | 147 | *out_row_ctr += num_rows; |
148 | } | 148 | } |
149 | 149 | ||
150 | 150 | ||
151 | #ifdef QUANT_2PASS_SUPPORTED | 151 | #ifdef QUANT_2PASS_SUPPORTED |
152 | 152 | ||
153 | /* | 153 | /* |
154 | * Process some data in the first pass of 2-pass quantization. | 154 | * Process some data in the first pass of 2-pass quantization. |
155 | */ | 155 | */ |
156 | 156 | ||
157 | METHODDEF(void) | 157 | METHODDEF(void) |
158 | post_process_prepass (j_decompress_ptr cinfo, | 158 | post_process_prepass (j_decompress_ptr cinfo, |
159 | JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, | 159 | JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, |
160 | JDIMENSION in_row_groups_avail, | 160 | JDIMENSION in_row_groups_avail, |
161 | JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, | 161 | JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, |
162 | JDIMENSION out_rows_avail) | 162 | JDIMENSION out_rows_avail) |
163 | { | 163 | { |
164 | my_post_ptr post = (my_post_ptr) cinfo->post; | 164 | my_post_ptr post = (my_post_ptr) cinfo->post; |
165 | JDIMENSION old_next_row, num_rows; | 165 | JDIMENSION old_next_row, num_rows; |
166 | 166 | ||
167 | /* Reposition virtual buffer if at start of strip. */ | 167 | /* Reposition virtual buffer if at start of strip. */ |
168 | if (post->next_row == 0) { | 168 | if (post->next_row == 0) { |
169 | post->buffer = (*cinfo->mem->access_virt_sarray) | 169 | post->buffer = (*cinfo->mem->access_virt_sarray) |
170 | ((j_common_ptr) cinfo, post->whole_image, | 170 | ((j_common_ptr) cinfo, post->whole_image, |
171 | post->starting_row, post->strip_height, TRUE); | 171 | post->starting_row, post->strip_height, TRUE); |
172 | } | 172 | } |
173 | 173 | ||
174 | /* Upsample some data (up to a strip height's worth). */ | 174 | /* Upsample some data (up to a strip height's worth). */ |
175 | old_next_row = post->next_row; | 175 | old_next_row = post->next_row; |
176 | (*cinfo->upsample->upsample) (cinfo, | 176 | (*cinfo->upsample->upsample) (cinfo, |
177 | input_buf, in_row_group_ctr, in_row_groups_avail, | 177 | input_buf, in_row_group_ctr, in_row_groups_avail, |
178 | post->buffer, &post->next_row, post->strip_height); | 178 | post->buffer, &post->next_row, post->strip_height); |
179 | 179 | ||
180 | /* Allow quantizer to scan new data. No data is emitted, */ | 180 | /* Allow quantizer to scan new data. No data is emitted, */ |
181 | /* but we advance out_row_ctr so outer loop can tell when we're done. */ | 181 | /* but we advance out_row_ctr so outer loop can tell when we're done. */ |
182 | if (post->next_row > old_next_row) { | 182 | if (post->next_row > old_next_row) { |
183 | num_rows = post->next_row - old_next_row; | 183 | num_rows = post->next_row - old_next_row; |
184 | (*cinfo->cquantize->color_quantize) (cinfo, post->buffer + old_next_row, | 184 | (*cinfo->cquantize->color_quantize) (cinfo, post->buffer + old_next_row, |
185 | (JSAMPARRAY) NULL, (int) num_rows); | 185 | (JSAMPARRAY) NULL, (int) num_rows); |
186 | *out_row_ctr += num_rows; | 186 | *out_row_ctr += num_rows; |
187 | } | 187 | } |
188 | 188 | ||
189 | /* Advance if we filled the strip. */ | 189 | /* Advance if we filled the strip. */ |
190 | if (post->next_row >= post->strip_height) { | 190 | if (post->next_row >= post->strip_height) { |
191 | post->starting_row += post->strip_height; | 191 | post->starting_row += post->strip_height; |
192 | post->next_row = 0; | 192 | post->next_row = 0; |
193 | } | 193 | } |
194 | } | 194 | } |
195 | 195 | ||
196 | 196 | ||
197 | /* | 197 | /* |
198 | * Process some data in the second pass of 2-pass quantization. | 198 | * Process some data in the second pass of 2-pass quantization. |
199 | */ | 199 | */ |
200 | 200 | ||
201 | METHODDEF(void) | 201 | METHODDEF(void) |
202 | post_process_2pass (j_decompress_ptr cinfo, | 202 | post_process_2pass (j_decompress_ptr cinfo, |
203 | JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, | 203 | JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, |
204 | JDIMENSION in_row_groups_avail, | 204 | JDIMENSION in_row_groups_avail, |
205 | JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, | 205 | JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, |
206 | JDIMENSION out_rows_avail) | 206 | JDIMENSION out_rows_avail) |
207 | { | 207 | { |
208 | my_post_ptr post = (my_post_ptr) cinfo->post; | 208 | my_post_ptr post = (my_post_ptr) cinfo->post; |
209 | JDIMENSION num_rows, max_rows; | 209 | JDIMENSION num_rows, max_rows; |
210 | 210 | ||
211 | /* Reposition virtual buffer if at start of strip. */ | 211 | /* Reposition virtual buffer if at start of strip. */ |
212 | if (post->next_row == 0) { | 212 | if (post->next_row == 0) { |
213 | post->buffer = (*cinfo->mem->access_virt_sarray) | 213 | post->buffer = (*cinfo->mem->access_virt_sarray) |
214 | ((j_common_ptr) cinfo, post->whole_image, | 214 | ((j_common_ptr) cinfo, post->whole_image, |
215 | post->starting_row, post->strip_height, FALSE); | 215 | post->starting_row, post->strip_height, FALSE); |
216 | } | 216 | } |
217 | 217 | ||
218 | /* Determine number of rows to emit. */ | 218 | /* Determine number of rows to emit. */ |
219 | num_rows = post->strip_height - post->next_row; /* available in strip */ | 219 | num_rows = post->strip_height - post->next_row; /* available in strip */ |
220 | max_rows = out_rows_avail - *out_row_ctr; /* available in output area */ | 220 | max_rows = out_rows_avail - *out_row_ctr; /* available in output area */ |
221 | if (num_rows > max_rows) | 221 | if (num_rows > max_rows) |
222 | num_rows = max_rows; | 222 | num_rows = max_rows; |
223 | /* We have to check bottom of image here, can't depend on upsampler. */ | 223 | /* We have to check bottom of image here, can't depend on upsampler. */ |
224 | max_rows = cinfo->output_height - post->starting_row; | 224 | max_rows = cinfo->output_height - post->starting_row; |
225 | if (num_rows > max_rows) | 225 | if (num_rows > max_rows) |
226 | num_rows = max_rows; | 226 | num_rows = max_rows; |
227 | 227 | ||
228 | /* Quantize and emit data. */ | 228 | /* Quantize and emit data. */ |
229 | (*cinfo->cquantize->color_quantize) (cinfo, | 229 | (*cinfo->cquantize->color_quantize) (cinfo, |
230 | post->buffer + post->next_row, output_buf + *out_row_ctr, | 230 | post->buffer + post->next_row, output_buf + *out_row_ctr, |
231 | (int) num_rows); | 231 | (int) num_rows); |
232 | *out_row_ctr += num_rows; | 232 | *out_row_ctr += num_rows; |
233 | 233 | ||
234 | /* Advance if we filled the strip. */ | 234 | /* Advance if we filled the strip. */ |
235 | post->next_row += num_rows; | 235 | post->next_row += num_rows; |
236 | if (post->next_row >= post->strip_height) { | 236 | if (post->next_row >= post->strip_height) { |
237 | post->starting_row += post->strip_height; | 237 | post->starting_row += post->strip_height; |
238 | post->next_row = 0; | 238 | post->next_row = 0; |
239 | } | 239 | } |
240 | } | 240 | } |
241 | 241 | ||
242 | #endif /* QUANT_2PASS_SUPPORTED */ | 242 | #endif /* QUANT_2PASS_SUPPORTED */ |
243 | 243 | ||
244 | 244 | ||
245 | /* | 245 | /* |
246 | * Initialize postprocessing controller. | 246 | * Initialize postprocessing controller. |
247 | */ | 247 | */ |
248 | 248 | ||
249 | GLOBAL(void) | 249 | GLOBAL(void) |
250 | jinit_d_post_controller (j_decompress_ptr cinfo, boolean need_full_buffer) | 250 | jinit_d_post_controller (j_decompress_ptr cinfo, boolean need_full_buffer) |
251 | { | 251 | { |
252 | my_post_ptr post; | 252 | my_post_ptr post; |
253 | 253 | ||
254 | post = (my_post_ptr) | 254 | post = (my_post_ptr) |
255 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, | 255 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, |
256 | SIZEOF(my_post_controller)); | 256 | SIZEOF(my_post_controller)); |
257 | cinfo->post = (struct jpeg_d_post_controller *) post; | 257 | cinfo->post = (struct jpeg_d_post_controller *) post; |
258 | post->pub.start_pass = start_pass_dpost; | 258 | post->pub.start_pass = start_pass_dpost; |
259 | post->whole_image = NULL; /* flag for no virtual arrays */ | 259 | post->whole_image = NULL; /* flag for no virtual arrays */ |
260 | post->buffer = NULL; /* flag for no strip buffer */ | 260 | post->buffer = NULL; /* flag for no strip buffer */ |
261 | 261 | ||
262 | /* Create the quantization buffer, if needed */ | 262 | /* Create the quantization buffer, if needed */ |
263 | if (cinfo->quantize_colors) { | 263 | if (cinfo->quantize_colors) { |
264 | /* The buffer strip height is max_v_samp_factor, which is typically | 264 | /* The buffer strip height is max_v_samp_factor, which is typically |
265 | * an efficient number of rows for upsampling to return. | 265 | * an efficient number of rows for upsampling to return. |
266 | * (In the presence of output rescaling, we might want to be smarter?) | 266 | * (In the presence of output rescaling, we might want to be smarter?) |
267 | */ | 267 | */ |
268 | post->strip_height = (JDIMENSION) cinfo->max_v_samp_factor; | 268 | post->strip_height = (JDIMENSION) cinfo->max_v_samp_factor; |
269 | if (need_full_buffer) { | 269 | if (need_full_buffer) { |
270 | /* Two-pass color quantization: need full-image storage. */ | 270 | /* Two-pass color quantization: need full-image storage. */ |
271 | /* We round up the number of rows to a multiple of the strip height. */ | 271 | /* We round up the number of rows to a multiple of the strip height. */ |
272 | #ifdef QUANT_2PASS_SUPPORTED | 272 | #ifdef QUANT_2PASS_SUPPORTED |
273 | post->whole_image = (*cinfo->mem->request_virt_sarray) | 273 | post->whole_image = (*cinfo->mem->request_virt_sarray) |
274 | ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, | 274 | ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, |
275 | cinfo->output_width * cinfo->out_color_components, | 275 | cinfo->output_width * cinfo->out_color_components, |
276 | (JDIMENSION) jround_up((long) cinfo->output_height, | 276 | (JDIMENSION) jround_up((long) cinfo->output_height, |
277 | (long) post->strip_height), | 277 | (long) post->strip_height), |
278 | post->strip_height); | 278 | post->strip_height); |
279 | #else | 279 | #else |
280 | ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); | 280 | ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); |
281 | #endif /* QUANT_2PASS_SUPPORTED */ | 281 | #endif /* QUANT_2PASS_SUPPORTED */ |
282 | } else { | 282 | } else { |
283 | /* One-pass color quantization: just make a strip buffer. */ | 283 | /* One-pass color quantization: just make a strip buffer. */ |
284 | post->buffer = (*cinfo->mem->alloc_sarray) | 284 | post->buffer = (*cinfo->mem->alloc_sarray) |
285 | ((j_common_ptr) cinfo, JPOOL_IMAGE, | 285 | ((j_common_ptr) cinfo, JPOOL_IMAGE, |
286 | cinfo->output_width * cinfo->out_color_components, | 286 | cinfo->output_width * cinfo->out_color_components, |
287 | post->strip_height); | 287 | post->strip_height); |
288 | } | 288 | } |
289 | } | 289 | } |
290 | } | 290 | } |