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authorDavid Walter Seikel2013-01-13 18:54:10 +1000
committerDavid Walter Seikel2013-01-13 18:54:10 +1000
commit959831f4ef5a3e797f576c3de08cd65032c997ad (patch)
treee7351908be5995f0b325b2ebeaa02d5a34b82583 /libraries/irrlicht-1.8/source/Irrlicht/libpng/pngget.c
parentAdd 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/libpng/pngget.c')
-rw-r--r--libraries/irrlicht-1.8/source/Irrlicht/libpng/pngget.c2248
1 files changed, 1124 insertions, 1124 deletions
diff --git a/libraries/irrlicht-1.8/source/Irrlicht/libpng/pngget.c b/libraries/irrlicht-1.8/source/Irrlicht/libpng/pngget.c
index 1889e99..43400cd 100644
--- a/libraries/irrlicht-1.8/source/Irrlicht/libpng/pngget.c
+++ b/libraries/irrlicht-1.8/source/Irrlicht/libpng/pngget.c
@@ -1,1124 +1,1124 @@
1 1
2/* pngget.c - retrieval of values from info struct 2/* pngget.c - retrieval of values from info struct
3 * 3 *
4 * Last changed in libpng 1.5.7 [December 15, 2011] 4 * Last changed in libpng 1.5.7 [December 15, 2011]
5 * Copyright (c) 1998-2011 Glenn Randers-Pehrson 5 * Copyright (c) 1998-2011 Glenn Randers-Pehrson
6 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) 6 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
7 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) 7 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
8 * 8 *
9 * This code is released under the libpng license. 9 * This code is released under the libpng license.
10 * For conditions of distribution and use, see the disclaimer 10 * For conditions of distribution and use, see the disclaimer
11 * and license in png.h 11 * and license in png.h
12 * 12 *
13 */ 13 */
14 14
15#include "pngpriv.h" 15#include "pngpriv.h"
16 16
17#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) 17#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
18 18
19png_uint_32 PNGAPI 19png_uint_32 PNGAPI
20png_get_valid(png_const_structp png_ptr, png_const_infop info_ptr, 20png_get_valid(png_const_structp png_ptr, png_const_infop info_ptr,
21 png_uint_32 flag) 21 png_uint_32 flag)
22{ 22{
23 if (png_ptr != NULL && info_ptr != NULL) 23 if (png_ptr != NULL && info_ptr != NULL)
24 return(info_ptr->valid & flag); 24 return(info_ptr->valid & flag);
25 25
26 return(0); 26 return(0);
27} 27}
28 28
29png_size_t PNGAPI 29png_size_t PNGAPI
30png_get_rowbytes(png_const_structp png_ptr, png_const_infop info_ptr) 30png_get_rowbytes(png_const_structp png_ptr, png_const_infop info_ptr)
31{ 31{
32 if (png_ptr != NULL && info_ptr != NULL) 32 if (png_ptr != NULL && info_ptr != NULL)
33 return(info_ptr->rowbytes); 33 return(info_ptr->rowbytes);
34 34
35 return(0); 35 return(0);
36} 36}
37 37
38#ifdef PNG_INFO_IMAGE_SUPPORTED 38#ifdef PNG_INFO_IMAGE_SUPPORTED
39png_bytepp PNGAPI 39png_bytepp PNGAPI
40png_get_rows(png_const_structp png_ptr, png_const_infop info_ptr) 40png_get_rows(png_const_structp png_ptr, png_const_infop info_ptr)
41{ 41{
42 if (png_ptr != NULL && info_ptr != NULL) 42 if (png_ptr != NULL && info_ptr != NULL)
43 return(info_ptr->row_pointers); 43 return(info_ptr->row_pointers);
44 44
45 return(0); 45 return(0);
46} 46}
47#endif 47#endif
48 48
49#ifdef PNG_EASY_ACCESS_SUPPORTED 49#ifdef PNG_EASY_ACCESS_SUPPORTED
50/* Easy access to info, added in libpng-0.99 */ 50/* Easy access to info, added in libpng-0.99 */
51png_uint_32 PNGAPI 51png_uint_32 PNGAPI
52png_get_image_width(png_const_structp png_ptr, png_const_infop info_ptr) 52png_get_image_width(png_const_structp png_ptr, png_const_infop info_ptr)
53{ 53{
54 if (png_ptr != NULL && info_ptr != NULL) 54 if (png_ptr != NULL && info_ptr != NULL)
55 return info_ptr->width; 55 return info_ptr->width;
56 56
57 return (0); 57 return (0);
58} 58}
59 59
60png_uint_32 PNGAPI 60png_uint_32 PNGAPI
61png_get_image_height(png_const_structp png_ptr, png_const_infop info_ptr) 61png_get_image_height(png_const_structp png_ptr, png_const_infop info_ptr)
62{ 62{
63 if (png_ptr != NULL && info_ptr != NULL) 63 if (png_ptr != NULL && info_ptr != NULL)
64 return info_ptr->height; 64 return info_ptr->height;
65 65
66 return (0); 66 return (0);
67} 67}
68 68
69png_byte PNGAPI 69png_byte PNGAPI
70png_get_bit_depth(png_const_structp png_ptr, png_const_infop info_ptr) 70png_get_bit_depth(png_const_structp png_ptr, png_const_infop info_ptr)
71{ 71{
72 if (png_ptr != NULL && info_ptr != NULL) 72 if (png_ptr != NULL && info_ptr != NULL)
73 return info_ptr->bit_depth; 73 return info_ptr->bit_depth;
74 74
75 return (0); 75 return (0);
76} 76}
77 77
78png_byte PNGAPI 78png_byte PNGAPI
79png_get_color_type(png_const_structp png_ptr, png_const_infop info_ptr) 79png_get_color_type(png_const_structp png_ptr, png_const_infop info_ptr)
80{ 80{
81 if (png_ptr != NULL && info_ptr != NULL) 81 if (png_ptr != NULL && info_ptr != NULL)
82 return info_ptr->color_type; 82 return info_ptr->color_type;
83 83
84 return (0); 84 return (0);
85} 85}
86 86
87png_byte PNGAPI 87png_byte PNGAPI
88png_get_filter_type(png_const_structp png_ptr, png_const_infop info_ptr) 88png_get_filter_type(png_const_structp png_ptr, png_const_infop info_ptr)
89{ 89{
90 if (png_ptr != NULL && info_ptr != NULL) 90 if (png_ptr != NULL && info_ptr != NULL)
91 return info_ptr->filter_type; 91 return info_ptr->filter_type;
92 92
93 return (0); 93 return (0);
94} 94}
95 95
96png_byte PNGAPI 96png_byte PNGAPI
97png_get_interlace_type(png_const_structp png_ptr, png_const_infop info_ptr) 97png_get_interlace_type(png_const_structp png_ptr, png_const_infop info_ptr)
98{ 98{
99 if (png_ptr != NULL && info_ptr != NULL) 99 if (png_ptr != NULL && info_ptr != NULL)
100 return info_ptr->interlace_type; 100 return info_ptr->interlace_type;
101 101
102 return (0); 102 return (0);
103} 103}
104 104
105png_byte PNGAPI 105png_byte PNGAPI
106png_get_compression_type(png_const_structp png_ptr, png_const_infop info_ptr) 106png_get_compression_type(png_const_structp png_ptr, png_const_infop info_ptr)
107{ 107{
108 if (png_ptr != NULL && info_ptr != NULL) 108 if (png_ptr != NULL && info_ptr != NULL)
109 return info_ptr->compression_type; 109 return info_ptr->compression_type;
110 110
111 return (0); 111 return (0);
112} 112}
113 113
114png_uint_32 PNGAPI 114png_uint_32 PNGAPI
115png_get_x_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr) 115png_get_x_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
116{ 116{
117#ifdef PNG_pHYs_SUPPORTED 117#ifdef PNG_pHYs_SUPPORTED
118 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs)) 118 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
119 { 119 {
120 png_debug1(1, "in %s retrieval function", 120 png_debug1(1, "in %s retrieval function",
121 "png_get_x_pixels_per_meter"); 121 "png_get_x_pixels_per_meter");
122 122
123 if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER) 123 if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
124 return (info_ptr->x_pixels_per_unit); 124 return (info_ptr->x_pixels_per_unit);
125 } 125 }
126#endif 126#endif
127 127
128 return (0); 128 return (0);
129} 129}
130 130
131png_uint_32 PNGAPI 131png_uint_32 PNGAPI
132png_get_y_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr) 132png_get_y_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
133{ 133{
134#ifdef PNG_pHYs_SUPPORTED 134#ifdef PNG_pHYs_SUPPORTED
135 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs)) 135 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
136 { 136 {
137 png_debug1(1, "in %s retrieval function", 137 png_debug1(1, "in %s retrieval function",
138 "png_get_y_pixels_per_meter"); 138 "png_get_y_pixels_per_meter");
139 139
140 if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER) 140 if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
141 return (info_ptr->y_pixels_per_unit); 141 return (info_ptr->y_pixels_per_unit);
142 } 142 }
143#endif 143#endif
144 144
145 return (0); 145 return (0);
146} 146}
147 147
148png_uint_32 PNGAPI 148png_uint_32 PNGAPI
149png_get_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr) 149png_get_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
150{ 150{
151#ifdef PNG_pHYs_SUPPORTED 151#ifdef PNG_pHYs_SUPPORTED
152 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs)) 152 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
153 { 153 {
154 png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter"); 154 png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter");
155 155
156 if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER && 156 if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER &&
157 info_ptr->x_pixels_per_unit == info_ptr->y_pixels_per_unit) 157 info_ptr->x_pixels_per_unit == info_ptr->y_pixels_per_unit)
158 return (info_ptr->x_pixels_per_unit); 158 return (info_ptr->x_pixels_per_unit);
159 } 159 }
160#endif 160#endif
161 161
162 return (0); 162 return (0);
163} 163}
164 164
165#ifdef PNG_FLOATING_POINT_SUPPORTED 165#ifdef PNG_FLOATING_POINT_SUPPORTED
166float PNGAPI 166float PNGAPI
167png_get_pixel_aspect_ratio(png_const_structp png_ptr, png_const_infop info_ptr) 167png_get_pixel_aspect_ratio(png_const_structp png_ptr, png_const_infop info_ptr)
168{ 168{
169#ifdef PNG_READ_pHYs_SUPPORTED 169#ifdef PNG_READ_pHYs_SUPPORTED
170 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs)) 170 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
171 { 171 {
172 png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio"); 172 png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio");
173 173
174 if (info_ptr->x_pixels_per_unit != 0) 174 if (info_ptr->x_pixels_per_unit != 0)
175 return ((float)((float)info_ptr->y_pixels_per_unit 175 return ((float)((float)info_ptr->y_pixels_per_unit
176 /(float)info_ptr->x_pixels_per_unit)); 176 /(float)info_ptr->x_pixels_per_unit));
177 } 177 }
178#endif 178#endif
179 179
180 return ((float)0.0); 180 return ((float)0.0);
181} 181}
182#endif 182#endif
183 183
184#ifdef PNG_FIXED_POINT_SUPPORTED 184#ifdef PNG_FIXED_POINT_SUPPORTED
185png_fixed_point PNGAPI 185png_fixed_point PNGAPI
186png_get_pixel_aspect_ratio_fixed(png_const_structp png_ptr, 186png_get_pixel_aspect_ratio_fixed(png_const_structp png_ptr,
187 png_const_infop info_ptr) 187 png_const_infop info_ptr)
188{ 188{
189#ifdef PNG_READ_pHYs_SUPPORTED 189#ifdef PNG_READ_pHYs_SUPPORTED
190 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs) 190 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs)
191 && info_ptr->x_pixels_per_unit > 0 && info_ptr->y_pixels_per_unit > 0 191 && info_ptr->x_pixels_per_unit > 0 && info_ptr->y_pixels_per_unit > 0
192 && info_ptr->x_pixels_per_unit <= PNG_UINT_31_MAX 192 && info_ptr->x_pixels_per_unit <= PNG_UINT_31_MAX
193 && info_ptr->y_pixels_per_unit <= PNG_UINT_31_MAX) 193 && info_ptr->y_pixels_per_unit <= PNG_UINT_31_MAX)
194 { 194 {
195 png_fixed_point res; 195 png_fixed_point res;
196 196
197 png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio_fixed"); 197 png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio_fixed");
198 198
199 /* The following casts work because a PNG 4 byte integer only has a valid 199 /* The following casts work because a PNG 4 byte integer only has a valid
200 * range of 0..2^31-1; otherwise the cast might overflow. 200 * range of 0..2^31-1; otherwise the cast might overflow.
201 */ 201 */
202 if (png_muldiv(&res, (png_int_32)info_ptr->y_pixels_per_unit, PNG_FP_1, 202 if (png_muldiv(&res, (png_int_32)info_ptr->y_pixels_per_unit, PNG_FP_1,
203 (png_int_32)info_ptr->x_pixels_per_unit)) 203 (png_int_32)info_ptr->x_pixels_per_unit))
204 return res; 204 return res;
205 } 205 }
206#endif 206#endif
207 207
208 return 0; 208 return 0;
209} 209}
210#endif 210#endif
211 211
212png_int_32 PNGAPI 212png_int_32 PNGAPI
213png_get_x_offset_microns(png_const_structp png_ptr, png_const_infop info_ptr) 213png_get_x_offset_microns(png_const_structp png_ptr, png_const_infop info_ptr)
214{ 214{
215#ifdef PNG_oFFs_SUPPORTED 215#ifdef PNG_oFFs_SUPPORTED
216 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs)) 216 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
217 { 217 {
218 png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns"); 218 png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
219 219
220 if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER) 220 if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
221 return (info_ptr->x_offset); 221 return (info_ptr->x_offset);
222 } 222 }
223#endif 223#endif
224 224
225 return (0); 225 return (0);
226} 226}
227 227
228png_int_32 PNGAPI 228png_int_32 PNGAPI
229png_get_y_offset_microns(png_const_structp png_ptr, png_const_infop info_ptr) 229png_get_y_offset_microns(png_const_structp png_ptr, png_const_infop info_ptr)
230{ 230{
231#ifdef PNG_oFFs_SUPPORTED 231#ifdef PNG_oFFs_SUPPORTED
232 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs)) 232 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
233 { 233 {
234 png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns"); 234 png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
235 235
236 if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER) 236 if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
237 return (info_ptr->y_offset); 237 return (info_ptr->y_offset);
238 } 238 }
239#endif 239#endif
240 240
241 return (0); 241 return (0);
242} 242}
243 243
244png_int_32 PNGAPI 244png_int_32 PNGAPI
245png_get_x_offset_pixels(png_const_structp png_ptr, png_const_infop info_ptr) 245png_get_x_offset_pixels(png_const_structp png_ptr, png_const_infop info_ptr)
246{ 246{
247#ifdef PNG_oFFs_SUPPORTED 247#ifdef PNG_oFFs_SUPPORTED
248 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs)) 248 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
249 { 249 {
250 png_debug1(1, "in %s retrieval function", "png_get_x_offset_pixels"); 250 png_debug1(1, "in %s retrieval function", "png_get_x_offset_pixels");
251 251
252 if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL) 252 if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
253 return (info_ptr->x_offset); 253 return (info_ptr->x_offset);
254 } 254 }
255#endif 255#endif
256 256
257 return (0); 257 return (0);
258} 258}
259 259
260png_int_32 PNGAPI 260png_int_32 PNGAPI
261png_get_y_offset_pixels(png_const_structp png_ptr, png_const_infop info_ptr) 261png_get_y_offset_pixels(png_const_structp png_ptr, png_const_infop info_ptr)
262{ 262{
263#ifdef PNG_oFFs_SUPPORTED 263#ifdef PNG_oFFs_SUPPORTED
264 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs)) 264 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
265 { 265 {
266 png_debug1(1, "in %s retrieval function", "png_get_y_offset_pixels"); 266 png_debug1(1, "in %s retrieval function", "png_get_y_offset_pixels");
267 267
268 if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL) 268 if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
269 return (info_ptr->y_offset); 269 return (info_ptr->y_offset);
270 } 270 }
271#endif 271#endif
272 272
273 return (0); 273 return (0);
274} 274}
275 275
276#ifdef PNG_INCH_CONVERSIONS_SUPPORTED 276#ifdef PNG_INCH_CONVERSIONS_SUPPORTED
277static png_uint_32 277static png_uint_32
278ppi_from_ppm(png_uint_32 ppm) 278ppi_from_ppm(png_uint_32 ppm)
279{ 279{
280#if 0 280#if 0
281 /* The conversion is *(2.54/100), in binary (32 digits): 281 /* The conversion is *(2.54/100), in binary (32 digits):
282 * .00000110100000001001110101001001 282 * .00000110100000001001110101001001
283 */ 283 */
284 png_uint_32 t1001, t1101; 284 png_uint_32 t1001, t1101;
285 ppm >>= 1; /* .1 */ 285 ppm >>= 1; /* .1 */
286 t1001 = ppm + (ppm >> 3); /* .1001 */ 286 t1001 = ppm + (ppm >> 3); /* .1001 */
287 t1101 = t1001 + (ppm >> 1); /* .1101 */ 287 t1101 = t1001 + (ppm >> 1); /* .1101 */
288 ppm >>= 20; /* .000000000000000000001 */ 288 ppm >>= 20; /* .000000000000000000001 */
289 t1101 += t1101 >> 15; /* .1101000000000001101 */ 289 t1101 += t1101 >> 15; /* .1101000000000001101 */
290 t1001 >>= 11; /* .000000000001001 */ 290 t1001 >>= 11; /* .000000000001001 */
291 t1001 += t1001 >> 12; /* .000000000001001000000001001 */ 291 t1001 += t1001 >> 12; /* .000000000001001000000001001 */
292 ppm += t1001; /* .000000000001001000001001001 */ 292 ppm += t1001; /* .000000000001001000001001001 */
293 ppm += t1101; /* .110100000001001110101001001 */ 293 ppm += t1101; /* .110100000001001110101001001 */
294 return (ppm + 16) >> 5;/* .00000110100000001001110101001001 */ 294 return (ppm + 16) >> 5;/* .00000110100000001001110101001001 */
295#else 295#else
296 /* The argument is a PNG unsigned integer, so it is not permitted 296 /* The argument is a PNG unsigned integer, so it is not permitted
297 * to be bigger than 2^31. 297 * to be bigger than 2^31.
298 */ 298 */
299 png_fixed_point result; 299 png_fixed_point result;
300 if (ppm <= PNG_UINT_31_MAX && png_muldiv(&result, (png_int_32)ppm, 127, 300 if (ppm <= PNG_UINT_31_MAX && png_muldiv(&result, (png_int_32)ppm, 127,
301 5000)) 301 5000))
302 return result; 302 return result;
303 303
304 /* Overflow. */ 304 /* Overflow. */
305 return 0; 305 return 0;
306#endif 306#endif
307} 307}
308 308
309png_uint_32 PNGAPI 309png_uint_32 PNGAPI
310png_get_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr) 310png_get_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr)
311{ 311{
312 return ppi_from_ppm(png_get_pixels_per_meter(png_ptr, info_ptr)); 312 return ppi_from_ppm(png_get_pixels_per_meter(png_ptr, info_ptr));
313} 313}
314 314
315png_uint_32 PNGAPI 315png_uint_32 PNGAPI
316png_get_x_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr) 316png_get_x_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr)
317{ 317{
318 return ppi_from_ppm(png_get_x_pixels_per_meter(png_ptr, info_ptr)); 318 return ppi_from_ppm(png_get_x_pixels_per_meter(png_ptr, info_ptr));
319} 319}
320 320
321png_uint_32 PNGAPI 321png_uint_32 PNGAPI
322png_get_y_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr) 322png_get_y_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr)
323{ 323{
324 return ppi_from_ppm(png_get_y_pixels_per_meter(png_ptr, info_ptr)); 324 return ppi_from_ppm(png_get_y_pixels_per_meter(png_ptr, info_ptr));
325} 325}
326 326
327#ifdef PNG_FIXED_POINT_SUPPORTED 327#ifdef PNG_FIXED_POINT_SUPPORTED
328static png_fixed_point 328static png_fixed_point
329png_fixed_inches_from_microns(png_structp png_ptr, png_int_32 microns) 329png_fixed_inches_from_microns(png_structp png_ptr, png_int_32 microns)
330{ 330{
331 /* Convert from metres * 1,000,000 to inches * 100,000, meters to 331 /* Convert from metres * 1,000,000 to inches * 100,000, meters to
332 * inches is simply *(100/2.54), so we want *(10/2.54) == 500/127. 332 * inches is simply *(100/2.54), so we want *(10/2.54) == 500/127.
333 * Notice that this can overflow - a warning is output and 0 is 333 * Notice that this can overflow - a warning is output and 0 is
334 * returned. 334 * returned.
335 */ 335 */
336 return png_muldiv_warn(png_ptr, microns, 500, 127); 336 return png_muldiv_warn(png_ptr, microns, 500, 127);
337} 337}
338 338
339png_fixed_point PNGAPI 339png_fixed_point PNGAPI
340png_get_x_offset_inches_fixed(png_structp png_ptr, 340png_get_x_offset_inches_fixed(png_structp png_ptr,
341 png_const_infop info_ptr) 341 png_const_infop info_ptr)
342{ 342{
343 return png_fixed_inches_from_microns(png_ptr, 343 return png_fixed_inches_from_microns(png_ptr,
344 png_get_x_offset_microns(png_ptr, info_ptr)); 344 png_get_x_offset_microns(png_ptr, info_ptr));
345} 345}
346#endif 346#endif
347 347
348#ifdef PNG_FIXED_POINT_SUPPORTED 348#ifdef PNG_FIXED_POINT_SUPPORTED
349png_fixed_point PNGAPI 349png_fixed_point PNGAPI
350png_get_y_offset_inches_fixed(png_structp png_ptr, 350png_get_y_offset_inches_fixed(png_structp png_ptr,
351 png_const_infop info_ptr) 351 png_const_infop info_ptr)
352{ 352{
353 return png_fixed_inches_from_microns(png_ptr, 353 return png_fixed_inches_from_microns(png_ptr,
354 png_get_y_offset_microns(png_ptr, info_ptr)); 354 png_get_y_offset_microns(png_ptr, info_ptr));
355} 355}
356#endif 356#endif
357 357
358#ifdef PNG_FLOATING_POINT_SUPPORTED 358#ifdef PNG_FLOATING_POINT_SUPPORTED
359float PNGAPI 359float PNGAPI
360png_get_x_offset_inches(png_const_structp png_ptr, png_const_infop info_ptr) 360png_get_x_offset_inches(png_const_structp png_ptr, png_const_infop info_ptr)
361{ 361{
362 /* To avoid the overflow do the conversion directly in floating 362 /* To avoid the overflow do the conversion directly in floating
363 * point. 363 * point.
364 */ 364 */
365 return (float)(png_get_x_offset_microns(png_ptr, info_ptr) * .00003937); 365 return (float)(png_get_x_offset_microns(png_ptr, info_ptr) * .00003937);
366} 366}
367#endif 367#endif
368 368
369#ifdef PNG_FLOATING_POINT_SUPPORTED 369#ifdef PNG_FLOATING_POINT_SUPPORTED
370float PNGAPI 370float PNGAPI
371png_get_y_offset_inches(png_const_structp png_ptr, png_const_infop info_ptr) 371png_get_y_offset_inches(png_const_structp png_ptr, png_const_infop info_ptr)
372{ 372{
373 /* To avoid the overflow do the conversion directly in floating 373 /* To avoid the overflow do the conversion directly in floating
374 * point. 374 * point.
375 */ 375 */
376 return (float)(png_get_y_offset_microns(png_ptr, info_ptr) * .00003937); 376 return (float)(png_get_y_offset_microns(png_ptr, info_ptr) * .00003937);
377} 377}
378#endif 378#endif
379 379
380#ifdef PNG_pHYs_SUPPORTED 380#ifdef PNG_pHYs_SUPPORTED
381png_uint_32 PNGAPI 381png_uint_32 PNGAPI
382png_get_pHYs_dpi(png_const_structp png_ptr, png_const_infop info_ptr, 382png_get_pHYs_dpi(png_const_structp png_ptr, png_const_infop info_ptr,
383 png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type) 383 png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
384{ 384{
385 png_uint_32 retval = 0; 385 png_uint_32 retval = 0;
386 386
387 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs)) 387 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
388 { 388 {
389 png_debug1(1, "in %s retrieval function", "pHYs"); 389 png_debug1(1, "in %s retrieval function", "pHYs");
390 390
391 if (res_x != NULL) 391 if (res_x != NULL)
392 { 392 {
393 *res_x = info_ptr->x_pixels_per_unit; 393 *res_x = info_ptr->x_pixels_per_unit;
394 retval |= PNG_INFO_pHYs; 394 retval |= PNG_INFO_pHYs;
395 } 395 }
396 396
397 if (res_y != NULL) 397 if (res_y != NULL)
398 { 398 {
399 *res_y = info_ptr->y_pixels_per_unit; 399 *res_y = info_ptr->y_pixels_per_unit;
400 retval |= PNG_INFO_pHYs; 400 retval |= PNG_INFO_pHYs;
401 } 401 }
402 402
403 if (unit_type != NULL) 403 if (unit_type != NULL)
404 { 404 {
405 *unit_type = (int)info_ptr->phys_unit_type; 405 *unit_type = (int)info_ptr->phys_unit_type;
406 retval |= PNG_INFO_pHYs; 406 retval |= PNG_INFO_pHYs;
407 407
408 if (*unit_type == 1) 408 if (*unit_type == 1)
409 { 409 {
410 if (res_x != NULL) *res_x = (png_uint_32)(*res_x * .0254 + .50); 410 if (res_x != NULL) *res_x = (png_uint_32)(*res_x * .0254 + .50);
411 if (res_y != NULL) *res_y = (png_uint_32)(*res_y * .0254 + .50); 411 if (res_y != NULL) *res_y = (png_uint_32)(*res_y * .0254 + .50);
412 } 412 }
413 } 413 }
414 } 414 }
415 415
416 return (retval); 416 return (retval);
417} 417}
418#endif /* PNG_pHYs_SUPPORTED */ 418#endif /* PNG_pHYs_SUPPORTED */
419#endif /* PNG_INCH_CONVERSIONS_SUPPORTED */ 419#endif /* PNG_INCH_CONVERSIONS_SUPPORTED */
420 420
421/* png_get_channels really belongs in here, too, but it's been around longer */ 421/* png_get_channels really belongs in here, too, but it's been around longer */
422 422
423#endif /* PNG_EASY_ACCESS_SUPPORTED */ 423#endif /* PNG_EASY_ACCESS_SUPPORTED */
424 424
425png_byte PNGAPI 425png_byte PNGAPI
426png_get_channels(png_const_structp png_ptr, png_const_infop info_ptr) 426png_get_channels(png_const_structp png_ptr, png_const_infop info_ptr)
427{ 427{
428 if (png_ptr != NULL && info_ptr != NULL) 428 if (png_ptr != NULL && info_ptr != NULL)
429 return(info_ptr->channels); 429 return(info_ptr->channels);
430 430
431 return (0); 431 return (0);
432} 432}
433 433
434png_const_bytep PNGAPI 434png_const_bytep PNGAPI
435png_get_signature(png_const_structp png_ptr, png_infop info_ptr) 435png_get_signature(png_const_structp png_ptr, png_infop info_ptr)
436{ 436{
437 if (png_ptr != NULL && info_ptr != NULL) 437 if (png_ptr != NULL && info_ptr != NULL)
438 return(info_ptr->signature); 438 return(info_ptr->signature);
439 439
440 return (NULL); 440 return (NULL);
441} 441}
442 442
443#ifdef PNG_bKGD_SUPPORTED 443#ifdef PNG_bKGD_SUPPORTED
444png_uint_32 PNGAPI 444png_uint_32 PNGAPI
445png_get_bKGD(png_const_structp png_ptr, png_infop info_ptr, 445png_get_bKGD(png_const_structp png_ptr, png_infop info_ptr,
446 png_color_16p *background) 446 png_color_16p *background)
447{ 447{
448 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD) 448 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD)
449 && background != NULL) 449 && background != NULL)
450 { 450 {
451 png_debug1(1, "in %s retrieval function", "bKGD"); 451 png_debug1(1, "in %s retrieval function", "bKGD");
452 452
453 *background = &(info_ptr->background); 453 *background = &(info_ptr->background);
454 return (PNG_INFO_bKGD); 454 return (PNG_INFO_bKGD);
455 } 455 }
456 456
457 return (0); 457 return (0);
458} 458}
459#endif 459#endif
460 460
461#ifdef PNG_cHRM_SUPPORTED 461#ifdef PNG_cHRM_SUPPORTED
462/* The XYZ APIs were added in 1.5.5 to take advantage of the code added at the 462/* The XYZ APIs were added in 1.5.5 to take advantage of the code added at the
463 * same time to correct the rgb grayscale coefficient defaults obtained from the 463 * same time to correct the rgb grayscale coefficient defaults obtained from the
464 * cHRM chunk in 1.5.4 464 * cHRM chunk in 1.5.4
465 */ 465 */
466png_uint_32 PNGFAPI 466png_uint_32 PNGFAPI
467png_get_cHRM_XYZ_fixed(png_structp png_ptr, png_const_infop info_ptr, 467png_get_cHRM_XYZ_fixed(png_structp png_ptr, png_const_infop info_ptr,
468 png_fixed_point *int_red_X, png_fixed_point *int_red_Y, 468 png_fixed_point *int_red_X, png_fixed_point *int_red_Y,
469 png_fixed_point *int_red_Z, png_fixed_point *int_green_X, 469 png_fixed_point *int_red_Z, png_fixed_point *int_green_X,
470 png_fixed_point *int_green_Y, png_fixed_point *int_green_Z, 470 png_fixed_point *int_green_Y, png_fixed_point *int_green_Z,
471 png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y, 471 png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
472 png_fixed_point *int_blue_Z) 472 png_fixed_point *int_blue_Z)
473{ 473{
474 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM)) 474 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
475 { 475 {
476 png_xy xy; 476 png_xy xy;
477 png_XYZ XYZ; 477 png_XYZ XYZ;
478 478
479 png_debug1(1, "in %s retrieval function", "cHRM_XYZ"); 479 png_debug1(1, "in %s retrieval function", "cHRM_XYZ");
480 480
481 xy.whitex = info_ptr->x_white; 481 xy.whitex = info_ptr->x_white;
482 xy.whitey = info_ptr->y_white; 482 xy.whitey = info_ptr->y_white;
483 xy.redx = info_ptr->x_red; 483 xy.redx = info_ptr->x_red;
484 xy.redy = info_ptr->y_red; 484 xy.redy = info_ptr->y_red;
485 xy.greenx = info_ptr->x_green; 485 xy.greenx = info_ptr->x_green;
486 xy.greeny = info_ptr->y_green; 486 xy.greeny = info_ptr->y_green;
487 xy.bluex = info_ptr->x_blue; 487 xy.bluex = info_ptr->x_blue;
488 xy.bluey = info_ptr->y_blue; 488 xy.bluey = info_ptr->y_blue;
489 489
490 /* The *_checked function handles error reporting, so just return 0 if 490 /* The *_checked function handles error reporting, so just return 0 if
491 * there is a failure here. 491 * there is a failure here.
492 */ 492 */
493 if (png_XYZ_from_xy_checked(png_ptr, &XYZ, xy)) 493 if (png_XYZ_from_xy_checked(png_ptr, &XYZ, xy))
494 { 494 {
495 if (int_red_X != NULL) 495 if (int_red_X != NULL)
496 *int_red_X = XYZ.redX; 496 *int_red_X = XYZ.redX;
497 if (int_red_Y != NULL) 497 if (int_red_Y != NULL)
498 *int_red_Y = XYZ.redY; 498 *int_red_Y = XYZ.redY;
499 if (int_red_Z != NULL) 499 if (int_red_Z != NULL)
500 *int_red_Z = XYZ.redZ; 500 *int_red_Z = XYZ.redZ;
501 if (int_green_X != NULL) 501 if (int_green_X != NULL)
502 *int_green_X = XYZ.greenX; 502 *int_green_X = XYZ.greenX;
503 if (int_green_Y != NULL) 503 if (int_green_Y != NULL)
504 *int_green_Y = XYZ.greenY; 504 *int_green_Y = XYZ.greenY;
505 if (int_green_Z != NULL) 505 if (int_green_Z != NULL)
506 *int_green_Z = XYZ.greenZ; 506 *int_green_Z = XYZ.greenZ;
507 if (int_blue_X != NULL) 507 if (int_blue_X != NULL)
508 *int_blue_X = XYZ.blueX; 508 *int_blue_X = XYZ.blueX;
509 if (int_blue_Y != NULL) 509 if (int_blue_Y != NULL)
510 *int_blue_Y = XYZ.blueY; 510 *int_blue_Y = XYZ.blueY;
511 if (int_blue_Z != NULL) 511 if (int_blue_Z != NULL)
512 *int_blue_Z = XYZ.blueZ; 512 *int_blue_Z = XYZ.blueZ;
513 513
514 return (PNG_INFO_cHRM); 514 return (PNG_INFO_cHRM);
515 } 515 }
516 } 516 }
517 517
518 return (0); 518 return (0);
519} 519}
520 520
521# ifdef PNG_FLOATING_POINT_SUPPORTED 521# ifdef PNG_FLOATING_POINT_SUPPORTED
522png_uint_32 PNGAPI 522png_uint_32 PNGAPI
523png_get_cHRM(png_const_structp png_ptr, png_const_infop info_ptr, 523png_get_cHRM(png_const_structp png_ptr, png_const_infop info_ptr,
524 double *white_x, double *white_y, double *red_x, double *red_y, 524 double *white_x, double *white_y, double *red_x, double *red_y,
525 double *green_x, double *green_y, double *blue_x, double *blue_y) 525 double *green_x, double *green_y, double *blue_x, double *blue_y)
526{ 526{
527 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM)) 527 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
528 { 528 {
529 png_debug1(1, "in %s retrieval function", "cHRM"); 529 png_debug1(1, "in %s retrieval function", "cHRM");
530 530
531 if (white_x != NULL) 531 if (white_x != NULL)
532 *white_x = png_float(png_ptr, info_ptr->x_white, "cHRM white X"); 532 *white_x = png_float(png_ptr, info_ptr->x_white, "cHRM white X");
533 if (white_y != NULL) 533 if (white_y != NULL)
534 *white_y = png_float(png_ptr, info_ptr->y_white, "cHRM white Y"); 534 *white_y = png_float(png_ptr, info_ptr->y_white, "cHRM white Y");
535 if (red_x != NULL) 535 if (red_x != NULL)
536 *red_x = png_float(png_ptr, info_ptr->x_red, "cHRM red X"); 536 *red_x = png_float(png_ptr, info_ptr->x_red, "cHRM red X");
537 if (red_y != NULL) 537 if (red_y != NULL)
538 *red_y = png_float(png_ptr, info_ptr->y_red, "cHRM red Y"); 538 *red_y = png_float(png_ptr, info_ptr->y_red, "cHRM red Y");
539 if (green_x != NULL) 539 if (green_x != NULL)
540 *green_x = png_float(png_ptr, info_ptr->x_green, "cHRM green X"); 540 *green_x = png_float(png_ptr, info_ptr->x_green, "cHRM green X");
541 if (green_y != NULL) 541 if (green_y != NULL)
542 *green_y = png_float(png_ptr, info_ptr->y_green, "cHRM green Y"); 542 *green_y = png_float(png_ptr, info_ptr->y_green, "cHRM green Y");
543 if (blue_x != NULL) 543 if (blue_x != NULL)
544 *blue_x = png_float(png_ptr, info_ptr->x_blue, "cHRM blue X"); 544 *blue_x = png_float(png_ptr, info_ptr->x_blue, "cHRM blue X");
545 if (blue_y != NULL) 545 if (blue_y != NULL)
546 *blue_y = png_float(png_ptr, info_ptr->y_blue, "cHRM blue Y"); 546 *blue_y = png_float(png_ptr, info_ptr->y_blue, "cHRM blue Y");
547 return (PNG_INFO_cHRM); 547 return (PNG_INFO_cHRM);
548 } 548 }
549 549
550 return (0); 550 return (0);
551} 551}
552 552
553png_uint_32 PNGAPI 553png_uint_32 PNGAPI
554png_get_cHRM_XYZ(png_structp png_ptr, png_const_infop info_ptr, 554png_get_cHRM_XYZ(png_structp png_ptr, png_const_infop info_ptr,
555 double *red_X, double *red_Y, double *red_Z, double *green_X, 555 double *red_X, double *red_Y, double *red_Z, double *green_X,
556 double *green_Y, double *green_Z, double *blue_X, double *blue_Y, 556 double *green_Y, double *green_Z, double *blue_X, double *blue_Y,
557 double *blue_Z) 557 double *blue_Z)
558{ 558{
559 png_XYZ XYZ; 559 png_XYZ XYZ;
560 560
561 if (png_get_cHRM_XYZ_fixed(png_ptr, info_ptr, 561 if (png_get_cHRM_XYZ_fixed(png_ptr, info_ptr,
562 &XYZ.redX, &XYZ.redY, &XYZ.redZ, &XYZ.greenX, &XYZ.greenY, &XYZ.greenZ, 562 &XYZ.redX, &XYZ.redY, &XYZ.redZ, &XYZ.greenX, &XYZ.greenY, &XYZ.greenZ,
563 &XYZ.blueX, &XYZ.blueY, &XYZ.blueZ) & PNG_INFO_cHRM) 563 &XYZ.blueX, &XYZ.blueY, &XYZ.blueZ) & PNG_INFO_cHRM)
564 { 564 {
565 if (red_X != NULL) 565 if (red_X != NULL)
566 *red_X = png_float(png_ptr, XYZ.redX, "cHRM red X"); 566 *red_X = png_float(png_ptr, XYZ.redX, "cHRM red X");
567 if (red_Y != NULL) 567 if (red_Y != NULL)
568 *red_Y = png_float(png_ptr, XYZ.redY, "cHRM red Y"); 568 *red_Y = png_float(png_ptr, XYZ.redY, "cHRM red Y");
569 if (red_Z != NULL) 569 if (red_Z != NULL)
570 *red_Z = png_float(png_ptr, XYZ.redZ, "cHRM red Z"); 570 *red_Z = png_float(png_ptr, XYZ.redZ, "cHRM red Z");
571 if (green_X != NULL) 571 if (green_X != NULL)
572 *green_X = png_float(png_ptr, XYZ.greenX, "cHRM green X"); 572 *green_X = png_float(png_ptr, XYZ.greenX, "cHRM green X");
573 if (green_Y != NULL) 573 if (green_Y != NULL)
574 *green_Y = png_float(png_ptr, XYZ.greenY, "cHRM green Y"); 574 *green_Y = png_float(png_ptr, XYZ.greenY, "cHRM green Y");
575 if (green_Z != NULL) 575 if (green_Z != NULL)
576 *green_Z = png_float(png_ptr, XYZ.greenZ, "cHRM green Z"); 576 *green_Z = png_float(png_ptr, XYZ.greenZ, "cHRM green Z");
577 if (blue_X != NULL) 577 if (blue_X != NULL)
578 *blue_X = png_float(png_ptr, XYZ.blueX, "cHRM blue X"); 578 *blue_X = png_float(png_ptr, XYZ.blueX, "cHRM blue X");
579 if (blue_Y != NULL) 579 if (blue_Y != NULL)
580 *blue_Y = png_float(png_ptr, XYZ.blueY, "cHRM blue Y"); 580 *blue_Y = png_float(png_ptr, XYZ.blueY, "cHRM blue Y");
581 if (blue_Z != NULL) 581 if (blue_Z != NULL)
582 *blue_Z = png_float(png_ptr, XYZ.blueZ, "cHRM blue Z"); 582 *blue_Z = png_float(png_ptr, XYZ.blueZ, "cHRM blue Z");
583 return (PNG_INFO_cHRM); 583 return (PNG_INFO_cHRM);
584 } 584 }
585 585
586 return (0); 586 return (0);
587} 587}
588# endif 588# endif
589 589
590# ifdef PNG_FIXED_POINT_SUPPORTED 590# ifdef PNG_FIXED_POINT_SUPPORTED
591png_uint_32 PNGAPI 591png_uint_32 PNGAPI
592png_get_cHRM_fixed(png_const_structp png_ptr, png_const_infop info_ptr, 592png_get_cHRM_fixed(png_const_structp png_ptr, png_const_infop info_ptr,
593 png_fixed_point *white_x, png_fixed_point *white_y, png_fixed_point *red_x, 593 png_fixed_point *white_x, png_fixed_point *white_y, png_fixed_point *red_x,
594 png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y, 594 png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y,
595 png_fixed_point *blue_x, png_fixed_point *blue_y) 595 png_fixed_point *blue_x, png_fixed_point *blue_y)
596{ 596{
597 png_debug1(1, "in %s retrieval function", "cHRM"); 597 png_debug1(1, "in %s retrieval function", "cHRM");
598 598
599 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM)) 599 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
600 { 600 {
601 if (white_x != NULL) 601 if (white_x != NULL)
602 *white_x = info_ptr->x_white; 602 *white_x = info_ptr->x_white;
603 if (white_y != NULL) 603 if (white_y != NULL)
604 *white_y = info_ptr->y_white; 604 *white_y = info_ptr->y_white;
605 if (red_x != NULL) 605 if (red_x != NULL)
606 *red_x = info_ptr->x_red; 606 *red_x = info_ptr->x_red;
607 if (red_y != NULL) 607 if (red_y != NULL)
608 *red_y = info_ptr->y_red; 608 *red_y = info_ptr->y_red;
609 if (green_x != NULL) 609 if (green_x != NULL)
610 *green_x = info_ptr->x_green; 610 *green_x = info_ptr->x_green;
611 if (green_y != NULL) 611 if (green_y != NULL)
612 *green_y = info_ptr->y_green; 612 *green_y = info_ptr->y_green;
613 if (blue_x != NULL) 613 if (blue_x != NULL)
614 *blue_x = info_ptr->x_blue; 614 *blue_x = info_ptr->x_blue;
615 if (blue_y != NULL) 615 if (blue_y != NULL)
616 *blue_y = info_ptr->y_blue; 616 *blue_y = info_ptr->y_blue;
617 return (PNG_INFO_cHRM); 617 return (PNG_INFO_cHRM);
618 } 618 }
619 619
620 return (0); 620 return (0);
621} 621}
622# endif 622# endif
623#endif 623#endif
624 624
625#ifdef PNG_gAMA_SUPPORTED 625#ifdef PNG_gAMA_SUPPORTED
626png_uint_32 PNGFAPI 626png_uint_32 PNGFAPI
627png_get_gAMA_fixed(png_const_structp png_ptr, png_const_infop info_ptr, 627png_get_gAMA_fixed(png_const_structp png_ptr, png_const_infop info_ptr,
628 png_fixed_point *file_gamma) 628 png_fixed_point *file_gamma)
629{ 629{
630 png_debug1(1, "in %s retrieval function", "gAMA"); 630 png_debug1(1, "in %s retrieval function", "gAMA");
631 631
632 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA) 632 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
633 && file_gamma != NULL) 633 && file_gamma != NULL)
634 { 634 {
635 *file_gamma = info_ptr->gamma; 635 *file_gamma = info_ptr->gamma;
636 return (PNG_INFO_gAMA); 636 return (PNG_INFO_gAMA);
637 } 637 }
638 638
639 return (0); 639 return (0);
640} 640}
641# ifdef PNG_FLOATING_POINT_SUPPORTED 641# ifdef PNG_FLOATING_POINT_SUPPORTED
642png_uint_32 PNGAPI 642png_uint_32 PNGAPI
643png_get_gAMA(png_const_structp png_ptr, png_const_infop info_ptr, 643png_get_gAMA(png_const_structp png_ptr, png_const_infop info_ptr,
644 double *file_gamma) 644 double *file_gamma)
645{ 645{
646 png_fixed_point igamma; 646 png_fixed_point igamma;
647 png_uint_32 ok = png_get_gAMA_fixed(png_ptr, info_ptr, &igamma); 647 png_uint_32 ok = png_get_gAMA_fixed(png_ptr, info_ptr, &igamma);
648 648
649 if (ok) 649 if (ok)
650 *file_gamma = png_float(png_ptr, igamma, "png_get_gAMA"); 650 *file_gamma = png_float(png_ptr, igamma, "png_get_gAMA");
651 651
652 return ok; 652 return ok;
653} 653}
654 654
655# endif 655# endif
656#endif 656#endif
657 657
658#ifdef PNG_sRGB_SUPPORTED 658#ifdef PNG_sRGB_SUPPORTED
659png_uint_32 PNGAPI 659png_uint_32 PNGAPI
660png_get_sRGB(png_const_structp png_ptr, png_const_infop info_ptr, 660png_get_sRGB(png_const_structp png_ptr, png_const_infop info_ptr,
661 int *file_srgb_intent) 661 int *file_srgb_intent)
662{ 662{
663 png_debug1(1, "in %s retrieval function", "sRGB"); 663 png_debug1(1, "in %s retrieval function", "sRGB");
664 664
665 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB) 665 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB)
666 && file_srgb_intent != NULL) 666 && file_srgb_intent != NULL)
667 { 667 {
668 *file_srgb_intent = (int)info_ptr->srgb_intent; 668 *file_srgb_intent = (int)info_ptr->srgb_intent;
669 return (PNG_INFO_sRGB); 669 return (PNG_INFO_sRGB);
670 } 670 }
671 671
672 return (0); 672 return (0);
673} 673}
674#endif 674#endif
675 675
676#ifdef PNG_iCCP_SUPPORTED 676#ifdef PNG_iCCP_SUPPORTED
677png_uint_32 PNGAPI 677png_uint_32 PNGAPI
678png_get_iCCP(png_const_structp png_ptr, png_const_infop info_ptr, 678png_get_iCCP(png_const_structp png_ptr, png_const_infop info_ptr,
679 png_charpp name, int *compression_type, 679 png_charpp name, int *compression_type,
680 png_bytepp profile, png_uint_32 *proflen) 680 png_bytepp profile, png_uint_32 *proflen)
681{ 681{
682 png_debug1(1, "in %s retrieval function", "iCCP"); 682 png_debug1(1, "in %s retrieval function", "iCCP");
683 683
684 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP) 684 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP)
685 && name != NULL && compression_type != NULL && profile != NULL && 685 && name != NULL && compression_type != NULL && profile != NULL &&
686 proflen != NULL) 686 proflen != NULL)
687 { 687 {
688 *name = info_ptr->iccp_name; 688 *name = info_ptr->iccp_name;
689 *profile = info_ptr->iccp_profile; 689 *profile = info_ptr->iccp_profile;
690 /* Compression_type is a dummy so the API won't have to change 690 /* Compression_type is a dummy so the API won't have to change
691 * if we introduce multiple compression types later. 691 * if we introduce multiple compression types later.
692 */ 692 */
693 *proflen = info_ptr->iccp_proflen; 693 *proflen = info_ptr->iccp_proflen;
694 *compression_type = info_ptr->iccp_compression; 694 *compression_type = info_ptr->iccp_compression;
695 return (PNG_INFO_iCCP); 695 return (PNG_INFO_iCCP);
696 } 696 }
697 697
698 return (0); 698 return (0);
699} 699}
700#endif 700#endif
701 701
702#ifdef PNG_sPLT_SUPPORTED 702#ifdef PNG_sPLT_SUPPORTED
703png_uint_32 PNGAPI 703png_uint_32 PNGAPI
704png_get_sPLT(png_const_structp png_ptr, png_const_infop info_ptr, 704png_get_sPLT(png_const_structp png_ptr, png_const_infop info_ptr,
705 png_sPLT_tpp spalettes) 705 png_sPLT_tpp spalettes)
706{ 706{
707 if (png_ptr != NULL && info_ptr != NULL && spalettes != NULL) 707 if (png_ptr != NULL && info_ptr != NULL && spalettes != NULL)
708 { 708 {
709 *spalettes = info_ptr->splt_palettes; 709 *spalettes = info_ptr->splt_palettes;
710 return ((png_uint_32)info_ptr->splt_palettes_num); 710 return ((png_uint_32)info_ptr->splt_palettes_num);
711 } 711 }
712 712
713 return (0); 713 return (0);
714} 714}
715#endif 715#endif
716 716
717#ifdef PNG_hIST_SUPPORTED 717#ifdef PNG_hIST_SUPPORTED
718png_uint_32 PNGAPI 718png_uint_32 PNGAPI
719png_get_hIST(png_const_structp png_ptr, png_const_infop info_ptr, 719png_get_hIST(png_const_structp png_ptr, png_const_infop info_ptr,
720 png_uint_16p *hist) 720 png_uint_16p *hist)
721{ 721{
722 png_debug1(1, "in %s retrieval function", "hIST"); 722 png_debug1(1, "in %s retrieval function", "hIST");
723 723
724 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST) 724 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST)
725 && hist != NULL) 725 && hist != NULL)
726 { 726 {
727 *hist = info_ptr->hist; 727 *hist = info_ptr->hist;
728 return (PNG_INFO_hIST); 728 return (PNG_INFO_hIST);
729 } 729 }
730 730
731 return (0); 731 return (0);
732} 732}
733#endif 733#endif
734 734
735png_uint_32 PNGAPI 735png_uint_32 PNGAPI
736png_get_IHDR(png_structp png_ptr, png_infop info_ptr, 736png_get_IHDR(png_structp png_ptr, png_infop info_ptr,
737 png_uint_32 *width, png_uint_32 *height, int *bit_depth, 737 png_uint_32 *width, png_uint_32 *height, int *bit_depth,
738 int *color_type, int *interlace_type, int *compression_type, 738 int *color_type, int *interlace_type, int *compression_type,
739 int *filter_type) 739 int *filter_type)
740 740
741{ 741{
742 png_debug1(1, "in %s retrieval function", "IHDR"); 742 png_debug1(1, "in %s retrieval function", "IHDR");
743 743
744 if (png_ptr == NULL || info_ptr == NULL || width == NULL || 744 if (png_ptr == NULL || info_ptr == NULL || width == NULL ||
745 height == NULL || bit_depth == NULL || color_type == NULL) 745 height == NULL || bit_depth == NULL || color_type == NULL)
746 return (0); 746 return (0);
747 747
748 *width = info_ptr->width; 748 *width = info_ptr->width;
749 *height = info_ptr->height; 749 *height = info_ptr->height;
750 *bit_depth = info_ptr->bit_depth; 750 *bit_depth = info_ptr->bit_depth;
751 *color_type = info_ptr->color_type; 751 *color_type = info_ptr->color_type;
752 752
753 if (compression_type != NULL) 753 if (compression_type != NULL)
754 *compression_type = info_ptr->compression_type; 754 *compression_type = info_ptr->compression_type;
755 755
756 if (filter_type != NULL) 756 if (filter_type != NULL)
757 *filter_type = info_ptr->filter_type; 757 *filter_type = info_ptr->filter_type;
758 758
759 if (interlace_type != NULL) 759 if (interlace_type != NULL)
760 *interlace_type = info_ptr->interlace_type; 760 *interlace_type = info_ptr->interlace_type;
761 761
762 /* This is redundant if we can be sure that the info_ptr values were all 762 /* This is redundant if we can be sure that the info_ptr values were all
763 * assigned in png_set_IHDR(). We do the check anyhow in case an 763 * assigned in png_set_IHDR(). We do the check anyhow in case an
764 * application has ignored our advice not to mess with the members 764 * application has ignored our advice not to mess with the members
765 * of info_ptr directly. 765 * of info_ptr directly.
766 */ 766 */
767 png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height, 767 png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height,
768 info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type, 768 info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type,
769 info_ptr->compression_type, info_ptr->filter_type); 769 info_ptr->compression_type, info_ptr->filter_type);
770 770
771 return (1); 771 return (1);
772} 772}
773 773
774#ifdef PNG_oFFs_SUPPORTED 774#ifdef PNG_oFFs_SUPPORTED
775png_uint_32 PNGAPI 775png_uint_32 PNGAPI
776png_get_oFFs(png_const_structp png_ptr, png_const_infop info_ptr, 776png_get_oFFs(png_const_structp png_ptr, png_const_infop info_ptr,
777 png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type) 777 png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)
778{ 778{
779 png_debug1(1, "in %s retrieval function", "oFFs"); 779 png_debug1(1, "in %s retrieval function", "oFFs");
780 780
781 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs) 781 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs)
782 && offset_x != NULL && offset_y != NULL && unit_type != NULL) 782 && offset_x != NULL && offset_y != NULL && unit_type != NULL)
783 { 783 {
784 *offset_x = info_ptr->x_offset; 784 *offset_x = info_ptr->x_offset;
785 *offset_y = info_ptr->y_offset; 785 *offset_y = info_ptr->y_offset;
786 *unit_type = (int)info_ptr->offset_unit_type; 786 *unit_type = (int)info_ptr->offset_unit_type;
787 return (PNG_INFO_oFFs); 787 return (PNG_INFO_oFFs);
788 } 788 }
789 789
790 return (0); 790 return (0);
791} 791}
792#endif 792#endif
793 793
794#ifdef PNG_pCAL_SUPPORTED 794#ifdef PNG_pCAL_SUPPORTED
795png_uint_32 PNGAPI 795png_uint_32 PNGAPI
796png_get_pCAL(png_const_structp png_ptr, png_const_infop info_ptr, 796png_get_pCAL(png_const_structp png_ptr, png_const_infop info_ptr,
797 png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams, 797 png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams,
798 png_charp *units, png_charpp *params) 798 png_charp *units, png_charpp *params)
799{ 799{
800 png_debug1(1, "in %s retrieval function", "pCAL"); 800 png_debug1(1, "in %s retrieval function", "pCAL");
801 801
802 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL) 802 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL)
803 && purpose != NULL && X0 != NULL && X1 != NULL && type != NULL && 803 && purpose != NULL && X0 != NULL && X1 != NULL && type != NULL &&
804 nparams != NULL && units != NULL && params != NULL) 804 nparams != NULL && units != NULL && params != NULL)
805 { 805 {
806 *purpose = info_ptr->pcal_purpose; 806 *purpose = info_ptr->pcal_purpose;
807 *X0 = info_ptr->pcal_X0; 807 *X0 = info_ptr->pcal_X0;
808 *X1 = info_ptr->pcal_X1; 808 *X1 = info_ptr->pcal_X1;
809 *type = (int)info_ptr->pcal_type; 809 *type = (int)info_ptr->pcal_type;
810 *nparams = (int)info_ptr->pcal_nparams; 810 *nparams = (int)info_ptr->pcal_nparams;
811 *units = info_ptr->pcal_units; 811 *units = info_ptr->pcal_units;
812 *params = info_ptr->pcal_params; 812 *params = info_ptr->pcal_params;
813 return (PNG_INFO_pCAL); 813 return (PNG_INFO_pCAL);
814 } 814 }
815 815
816 return (0); 816 return (0);
817} 817}
818#endif 818#endif
819 819
820#ifdef PNG_sCAL_SUPPORTED 820#ifdef PNG_sCAL_SUPPORTED
821# ifdef PNG_FIXED_POINT_SUPPORTED 821# ifdef PNG_FIXED_POINT_SUPPORTED
822# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED 822# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
823png_uint_32 PNGAPI 823png_uint_32 PNGAPI
824png_get_sCAL_fixed(png_structp png_ptr, png_const_infop info_ptr, 824png_get_sCAL_fixed(png_structp png_ptr, png_const_infop info_ptr,
825 int *unit, png_fixed_point *width, png_fixed_point *height) 825 int *unit, png_fixed_point *width, png_fixed_point *height)
826{ 826{
827 if (png_ptr != NULL && info_ptr != NULL && 827 if (png_ptr != NULL && info_ptr != NULL &&
828 (info_ptr->valid & PNG_INFO_sCAL)) 828 (info_ptr->valid & PNG_INFO_sCAL))
829 { 829 {
830 *unit = info_ptr->scal_unit; 830 *unit = info_ptr->scal_unit;
831 /*TODO: make this work without FP support */ 831 /*TODO: make this work without FP support */
832 *width = png_fixed(png_ptr, atof(info_ptr->scal_s_width), "sCAL width"); 832 *width = png_fixed(png_ptr, atof(info_ptr->scal_s_width), "sCAL width");
833 *height = png_fixed(png_ptr, atof(info_ptr->scal_s_height), 833 *height = png_fixed(png_ptr, atof(info_ptr->scal_s_height),
834 "sCAL height"); 834 "sCAL height");
835 return (PNG_INFO_sCAL); 835 return (PNG_INFO_sCAL);
836 } 836 }
837 837
838 return(0); 838 return(0);
839} 839}
840# endif /* FLOATING_ARITHMETIC */ 840# endif /* FLOATING_ARITHMETIC */
841# endif /* FIXED_POINT */ 841# endif /* FIXED_POINT */
842# ifdef PNG_FLOATING_POINT_SUPPORTED 842# ifdef PNG_FLOATING_POINT_SUPPORTED
843png_uint_32 PNGAPI 843png_uint_32 PNGAPI
844png_get_sCAL(png_const_structp png_ptr, png_const_infop info_ptr, 844png_get_sCAL(png_const_structp png_ptr, png_const_infop info_ptr,
845 int *unit, double *width, double *height) 845 int *unit, double *width, double *height)
846{ 846{
847 if (png_ptr != NULL && info_ptr != NULL && 847 if (png_ptr != NULL && info_ptr != NULL &&
848 (info_ptr->valid & PNG_INFO_sCAL)) 848 (info_ptr->valid & PNG_INFO_sCAL))
849 { 849 {
850 *unit = info_ptr->scal_unit; 850 *unit = info_ptr->scal_unit;
851 *width = atof(info_ptr->scal_s_width); 851 *width = atof(info_ptr->scal_s_width);
852 *height = atof(info_ptr->scal_s_height); 852 *height = atof(info_ptr->scal_s_height);
853 return (PNG_INFO_sCAL); 853 return (PNG_INFO_sCAL);
854 } 854 }
855 855
856 return(0); 856 return(0);
857} 857}
858# endif /* FLOATING POINT */ 858# endif /* FLOATING POINT */
859png_uint_32 PNGAPI 859png_uint_32 PNGAPI
860png_get_sCAL_s(png_const_structp png_ptr, png_const_infop info_ptr, 860png_get_sCAL_s(png_const_structp png_ptr, png_const_infop info_ptr,
861 int *unit, png_charpp width, png_charpp height) 861 int *unit, png_charpp width, png_charpp height)
862{ 862{
863 if (png_ptr != NULL && info_ptr != NULL && 863 if (png_ptr != NULL && info_ptr != NULL &&
864 (info_ptr->valid & PNG_INFO_sCAL)) 864 (info_ptr->valid & PNG_INFO_sCAL))
865 { 865 {
866 *unit = info_ptr->scal_unit; 866 *unit = info_ptr->scal_unit;
867 *width = info_ptr->scal_s_width; 867 *width = info_ptr->scal_s_width;
868 *height = info_ptr->scal_s_height; 868 *height = info_ptr->scal_s_height;
869 return (PNG_INFO_sCAL); 869 return (PNG_INFO_sCAL);
870 } 870 }
871 871
872 return(0); 872 return(0);
873} 873}
874#endif /* sCAL */ 874#endif /* sCAL */
875 875
876#ifdef PNG_pHYs_SUPPORTED 876#ifdef PNG_pHYs_SUPPORTED
877png_uint_32 PNGAPI 877png_uint_32 PNGAPI
878png_get_pHYs(png_const_structp png_ptr, png_const_infop info_ptr, 878png_get_pHYs(png_const_structp png_ptr, png_const_infop info_ptr,
879 png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type) 879 png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
880{ 880{
881 png_uint_32 retval = 0; 881 png_uint_32 retval = 0;
882 882
883 png_debug1(1, "in %s retrieval function", "pHYs"); 883 png_debug1(1, "in %s retrieval function", "pHYs");
884 884
885 if (png_ptr != NULL && info_ptr != NULL && 885 if (png_ptr != NULL && info_ptr != NULL &&
886 (info_ptr->valid & PNG_INFO_pHYs)) 886 (info_ptr->valid & PNG_INFO_pHYs))
887 { 887 {
888 if (res_x != NULL) 888 if (res_x != NULL)
889 { 889 {
890 *res_x = info_ptr->x_pixels_per_unit; 890 *res_x = info_ptr->x_pixels_per_unit;
891 retval |= PNG_INFO_pHYs; 891 retval |= PNG_INFO_pHYs;
892 } 892 }
893 893
894 if (res_y != NULL) 894 if (res_y != NULL)
895 { 895 {
896 *res_y = info_ptr->y_pixels_per_unit; 896 *res_y = info_ptr->y_pixels_per_unit;
897 retval |= PNG_INFO_pHYs; 897 retval |= PNG_INFO_pHYs;
898 } 898 }
899 899
900 if (unit_type != NULL) 900 if (unit_type != NULL)
901 { 901 {
902 *unit_type = (int)info_ptr->phys_unit_type; 902 *unit_type = (int)info_ptr->phys_unit_type;
903 retval |= PNG_INFO_pHYs; 903 retval |= PNG_INFO_pHYs;
904 } 904 }
905 } 905 }
906 906
907 return (retval); 907 return (retval);
908} 908}
909#endif /* pHYs */ 909#endif /* pHYs */
910 910
911png_uint_32 PNGAPI 911png_uint_32 PNGAPI
912png_get_PLTE(png_const_structp png_ptr, png_const_infop info_ptr, 912png_get_PLTE(png_const_structp png_ptr, png_const_infop info_ptr,
913 png_colorp *palette, int *num_palette) 913 png_colorp *palette, int *num_palette)
914{ 914{
915 png_debug1(1, "in %s retrieval function", "PLTE"); 915 png_debug1(1, "in %s retrieval function", "PLTE");
916 916
917 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_PLTE) 917 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_PLTE)
918 && palette != NULL) 918 && palette != NULL)
919 { 919 {
920 *palette = info_ptr->palette; 920 *palette = info_ptr->palette;
921 *num_palette = info_ptr->num_palette; 921 *num_palette = info_ptr->num_palette;
922 png_debug1(3, "num_palette = %d", *num_palette); 922 png_debug1(3, "num_palette = %d", *num_palette);
923 return (PNG_INFO_PLTE); 923 return (PNG_INFO_PLTE);
924 } 924 }
925 925
926 return (0); 926 return (0);
927} 927}
928 928
929#ifdef PNG_sBIT_SUPPORTED 929#ifdef PNG_sBIT_SUPPORTED
930png_uint_32 PNGAPI 930png_uint_32 PNGAPI
931png_get_sBIT(png_const_structp png_ptr, png_infop info_ptr, 931png_get_sBIT(png_const_structp png_ptr, png_infop info_ptr,
932 png_color_8p *sig_bit) 932 png_color_8p *sig_bit)
933{ 933{
934 png_debug1(1, "in %s retrieval function", "sBIT"); 934 png_debug1(1, "in %s retrieval function", "sBIT");
935 935
936 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT) 936 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT)
937 && sig_bit != NULL) 937 && sig_bit != NULL)
938 { 938 {
939 *sig_bit = &(info_ptr->sig_bit); 939 *sig_bit = &(info_ptr->sig_bit);
940 return (PNG_INFO_sBIT); 940 return (PNG_INFO_sBIT);
941 } 941 }
942 942
943 return (0); 943 return (0);
944} 944}
945#endif 945#endif
946 946
947#ifdef PNG_TEXT_SUPPORTED 947#ifdef PNG_TEXT_SUPPORTED
948png_uint_32 PNGAPI 948png_uint_32 PNGAPI
949png_get_text(png_const_structp png_ptr, png_const_infop info_ptr, 949png_get_text(png_const_structp png_ptr, png_const_infop info_ptr,
950 png_textp *text_ptr, int *num_text) 950 png_textp *text_ptr, int *num_text)
951{ 951{
952 if (png_ptr != NULL && info_ptr != NULL && info_ptr->num_text > 0) 952 if (png_ptr != NULL && info_ptr != NULL && info_ptr->num_text > 0)
953 { 953 {
954 png_debug1(1, "in 0x%lx retrieval function", 954 png_debug1(1, "in 0x%lx retrieval function",
955 (unsigned long)png_ptr->chunk_name); 955 (unsigned long)png_ptr->chunk_name);
956 956
957 if (text_ptr != NULL) 957 if (text_ptr != NULL)
958 *text_ptr = info_ptr->text; 958 *text_ptr = info_ptr->text;
959 959
960 if (num_text != NULL) 960 if (num_text != NULL)
961 *num_text = info_ptr->num_text; 961 *num_text = info_ptr->num_text;
962 962
963 return ((png_uint_32)info_ptr->num_text); 963 return ((png_uint_32)info_ptr->num_text);
964 } 964 }
965 965
966 if (num_text != NULL) 966 if (num_text != NULL)
967 *num_text = 0; 967 *num_text = 0;
968 968
969 return(0); 969 return(0);
970} 970}
971#endif 971#endif
972 972
973#ifdef PNG_tIME_SUPPORTED 973#ifdef PNG_tIME_SUPPORTED
974png_uint_32 PNGAPI 974png_uint_32 PNGAPI
975png_get_tIME(png_const_structp png_ptr, png_infop info_ptr, png_timep *mod_time) 975png_get_tIME(png_const_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
976{ 976{
977 png_debug1(1, "in %s retrieval function", "tIME"); 977 png_debug1(1, "in %s retrieval function", "tIME");
978 978
979 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME) 979 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME)
980 && mod_time != NULL) 980 && mod_time != NULL)
981 { 981 {
982 *mod_time = &(info_ptr->mod_time); 982 *mod_time = &(info_ptr->mod_time);
983 return (PNG_INFO_tIME); 983 return (PNG_INFO_tIME);
984 } 984 }
985 985
986 return (0); 986 return (0);
987} 987}
988#endif 988#endif
989 989
990#ifdef PNG_tRNS_SUPPORTED 990#ifdef PNG_tRNS_SUPPORTED
991png_uint_32 PNGAPI 991png_uint_32 PNGAPI
992png_get_tRNS(png_const_structp png_ptr, png_infop info_ptr, 992png_get_tRNS(png_const_structp png_ptr, png_infop info_ptr,
993 png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color) 993 png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color)
994{ 994{
995 png_uint_32 retval = 0; 995 png_uint_32 retval = 0;
996 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS)) 996 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
997 { 997 {
998 png_debug1(1, "in %s retrieval function", "tRNS"); 998 png_debug1(1, "in %s retrieval function", "tRNS");
999 999
1000 if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) 1000 if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
1001 { 1001 {
1002 if (trans_alpha != NULL) 1002 if (trans_alpha != NULL)
1003 { 1003 {
1004 *trans_alpha = info_ptr->trans_alpha; 1004 *trans_alpha = info_ptr->trans_alpha;
1005 retval |= PNG_INFO_tRNS; 1005 retval |= PNG_INFO_tRNS;
1006 } 1006 }
1007 1007
1008 if (trans_color != NULL) 1008 if (trans_color != NULL)
1009 *trans_color = &(info_ptr->trans_color); 1009 *trans_color = &(info_ptr->trans_color);
1010 } 1010 }
1011 1011
1012 else /* if (info_ptr->color_type != PNG_COLOR_TYPE_PALETTE) */ 1012 else /* if (info_ptr->color_type != PNG_COLOR_TYPE_PALETTE) */
1013 { 1013 {
1014 if (trans_color != NULL) 1014 if (trans_color != NULL)
1015 { 1015 {
1016 *trans_color = &(info_ptr->trans_color); 1016 *trans_color = &(info_ptr->trans_color);
1017 retval |= PNG_INFO_tRNS; 1017 retval |= PNG_INFO_tRNS;
1018 } 1018 }
1019 1019
1020 if (trans_alpha != NULL) 1020 if (trans_alpha != NULL)
1021 *trans_alpha = NULL; 1021 *trans_alpha = NULL;
1022 } 1022 }
1023 1023
1024 if (num_trans != NULL) 1024 if (num_trans != NULL)
1025 { 1025 {
1026 *num_trans = info_ptr->num_trans; 1026 *num_trans = info_ptr->num_trans;
1027 retval |= PNG_INFO_tRNS; 1027 retval |= PNG_INFO_tRNS;
1028 } 1028 }
1029 } 1029 }
1030 1030
1031 return (retval); 1031 return (retval);
1032} 1032}
1033#endif 1033#endif
1034 1034
1035#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED 1035#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
1036int PNGAPI 1036int PNGAPI
1037png_get_unknown_chunks(png_const_structp png_ptr, png_const_infop info_ptr, 1037png_get_unknown_chunks(png_const_structp png_ptr, png_const_infop info_ptr,
1038 png_unknown_chunkpp unknowns) 1038 png_unknown_chunkpp unknowns)
1039{ 1039{
1040 if (png_ptr != NULL && info_ptr != NULL && unknowns != NULL) 1040 if (png_ptr != NULL && info_ptr != NULL && unknowns != NULL)
1041 { 1041 {
1042 *unknowns = info_ptr->unknown_chunks; 1042 *unknowns = info_ptr->unknown_chunks;
1043 return info_ptr->unknown_chunks_num; 1043 return info_ptr->unknown_chunks_num;
1044 } 1044 }
1045 1045
1046 return (0); 1046 return (0);
1047} 1047}
1048#endif 1048#endif
1049 1049
1050#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED 1050#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
1051png_byte PNGAPI 1051png_byte PNGAPI
1052png_get_rgb_to_gray_status (png_const_structp png_ptr) 1052png_get_rgb_to_gray_status (png_const_structp png_ptr)
1053{ 1053{
1054 return (png_byte)(png_ptr ? png_ptr->rgb_to_gray_status : 0); 1054 return (png_byte)(png_ptr ? png_ptr->rgb_to_gray_status : 0);
1055} 1055}
1056#endif 1056#endif
1057 1057
1058#ifdef PNG_USER_CHUNKS_SUPPORTED 1058#ifdef PNG_USER_CHUNKS_SUPPORTED
1059png_voidp PNGAPI 1059png_voidp PNGAPI
1060png_get_user_chunk_ptr(png_const_structp png_ptr) 1060png_get_user_chunk_ptr(png_const_structp png_ptr)
1061{ 1061{
1062 return (png_ptr ? png_ptr->user_chunk_ptr : NULL); 1062 return (png_ptr ? png_ptr->user_chunk_ptr : NULL);
1063} 1063}
1064#endif 1064#endif
1065 1065
1066png_size_t PNGAPI 1066png_size_t PNGAPI
1067png_get_compression_buffer_size(png_const_structp png_ptr) 1067png_get_compression_buffer_size(png_const_structp png_ptr)
1068{ 1068{
1069 return (png_ptr ? png_ptr->zbuf_size : 0); 1069 return (png_ptr ? png_ptr->zbuf_size : 0);
1070} 1070}
1071 1071
1072#ifdef PNG_SET_USER_LIMITS_SUPPORTED 1072#ifdef PNG_SET_USER_LIMITS_SUPPORTED
1073/* These functions were added to libpng 1.2.6 and were enabled 1073/* These functions were added to libpng 1.2.6 and were enabled
1074 * by default in libpng-1.4.0 */ 1074 * by default in libpng-1.4.0 */
1075png_uint_32 PNGAPI 1075png_uint_32 PNGAPI
1076png_get_user_width_max (png_const_structp png_ptr) 1076png_get_user_width_max (png_const_structp png_ptr)
1077{ 1077{
1078 return (png_ptr ? png_ptr->user_width_max : 0); 1078 return (png_ptr ? png_ptr->user_width_max : 0);
1079} 1079}
1080 1080
1081png_uint_32 PNGAPI 1081png_uint_32 PNGAPI
1082png_get_user_height_max (png_const_structp png_ptr) 1082png_get_user_height_max (png_const_structp png_ptr)
1083{ 1083{
1084 return (png_ptr ? png_ptr->user_height_max : 0); 1084 return (png_ptr ? png_ptr->user_height_max : 0);
1085} 1085}
1086 1086
1087/* This function was added to libpng 1.4.0 */ 1087/* This function was added to libpng 1.4.0 */
1088png_uint_32 PNGAPI 1088png_uint_32 PNGAPI
1089png_get_chunk_cache_max (png_const_structp png_ptr) 1089png_get_chunk_cache_max (png_const_structp png_ptr)
1090{ 1090{
1091 return (png_ptr ? png_ptr->user_chunk_cache_max : 0); 1091 return (png_ptr ? png_ptr->user_chunk_cache_max : 0);
1092} 1092}
1093 1093
1094/* This function was added to libpng 1.4.1 */ 1094/* This function was added to libpng 1.4.1 */
1095png_alloc_size_t PNGAPI 1095png_alloc_size_t PNGAPI
1096png_get_chunk_malloc_max (png_const_structp png_ptr) 1096png_get_chunk_malloc_max (png_const_structp png_ptr)
1097{ 1097{
1098 return (png_ptr ? png_ptr->user_chunk_malloc_max : 0); 1098 return (png_ptr ? png_ptr->user_chunk_malloc_max : 0);
1099} 1099}
1100#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */ 1100#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
1101 1101
1102/* These functions were added to libpng 1.4.0 */ 1102/* These functions were added to libpng 1.4.0 */
1103#ifdef PNG_IO_STATE_SUPPORTED 1103#ifdef PNG_IO_STATE_SUPPORTED
1104png_uint_32 PNGAPI 1104png_uint_32 PNGAPI
1105png_get_io_state (png_structp png_ptr) 1105png_get_io_state (png_structp png_ptr)
1106{ 1106{
1107 return png_ptr->io_state; 1107 return png_ptr->io_state;
1108} 1108}
1109 1109
1110png_uint_32 PNGAPI 1110png_uint_32 PNGAPI
1111png_get_io_chunk_type (png_const_structp png_ptr) 1111png_get_io_chunk_type (png_const_structp png_ptr)
1112{ 1112{
1113 return png_ptr->chunk_name; 1113 return png_ptr->chunk_name;
1114} 1114}
1115 1115
1116png_const_bytep PNGAPI 1116png_const_bytep PNGAPI
1117png_get_io_chunk_name (png_structp png_ptr) 1117png_get_io_chunk_name (png_structp png_ptr)
1118{ 1118{
1119 PNG_CSTRING_FROM_CHUNK(png_ptr->io_chunk_string, png_ptr->chunk_name); 1119 PNG_CSTRING_FROM_CHUNK(png_ptr->io_chunk_string, png_ptr->chunk_name);
1120 return png_ptr->io_chunk_string; 1120 return png_ptr->io_chunk_string;
1121} 1121}
1122#endif /* ?PNG_IO_STATE_SUPPORTED */ 1122#endif /* ?PNG_IO_STATE_SUPPORTED */
1123 1123
1124#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ 1124#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
generated by cgit v1.1 at 2024-08-02 11:13:10 +0000