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Diffstat (limited to 'libraries/irrlicht-1.8/source/Irrlicht/libpng/pngstruct.h')
-rw-r--r-- | libraries/irrlicht-1.8/source/Irrlicht/libpng/pngstruct.h | 358 |
1 files changed, 358 insertions, 0 deletions
diff --git a/libraries/irrlicht-1.8/source/Irrlicht/libpng/pngstruct.h b/libraries/irrlicht-1.8/source/Irrlicht/libpng/pngstruct.h new file mode 100644 index 0000000..1824c49 --- /dev/null +++ b/libraries/irrlicht-1.8/source/Irrlicht/libpng/pngstruct.h | |||
@@ -0,0 +1,358 @@ | |||
1 | |||
2 | /* pngstruct.h - header file for PNG reference library | ||
3 | * | ||
4 | * Copyright (c) 1998-2011 Glenn Randers-Pehrson | ||
5 | * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) | ||
6 | * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) | ||
7 | * | ||
8 | * Last changed in libpng 1.5.9 [February 18, 2012] | ||
9 | * | ||
10 | * This code is released under the libpng license. | ||
11 | * For conditions of distribution and use, see the disclaimer | ||
12 | * and license in png.h | ||
13 | */ | ||
14 | |||
15 | /* The structure that holds the information to read and write PNG files. | ||
16 | * The only people who need to care about what is inside of this are the | ||
17 | * people who will be modifying the library for their own special needs. | ||
18 | * It should NOT be accessed directly by an application. | ||
19 | */ | ||
20 | |||
21 | #ifndef PNGSTRUCT_H | ||
22 | #define PNGSTRUCT_H | ||
23 | /* zlib.h defines the structure z_stream, an instance of which is included | ||
24 | * in this structure and is required for decompressing the LZ compressed | ||
25 | * data in PNG files. | ||
26 | */ | ||
27 | #include "zlib.h" | ||
28 | |||
29 | struct png_struct_def | ||
30 | { | ||
31 | #ifdef PNG_SETJMP_SUPPORTED | ||
32 | jmp_buf longjmp_buffer; /* used in png_error */ | ||
33 | png_longjmp_ptr longjmp_fn;/* setjmp non-local goto function. */ | ||
34 | #endif | ||
35 | png_error_ptr error_fn; /* function for printing errors and aborting */ | ||
36 | #ifdef PNG_WARNINGS_SUPPORTED | ||
37 | png_error_ptr warning_fn; /* function for printing warnings */ | ||
38 | #endif | ||
39 | png_voidp error_ptr; /* user supplied struct for error functions */ | ||
40 | png_rw_ptr write_data_fn; /* function for writing output data */ | ||
41 | png_rw_ptr read_data_fn; /* function for reading input data */ | ||
42 | png_voidp io_ptr; /* ptr to application struct for I/O functions */ | ||
43 | |||
44 | #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED | ||
45 | png_user_transform_ptr read_user_transform_fn; /* user read transform */ | ||
46 | #endif | ||
47 | |||
48 | #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED | ||
49 | png_user_transform_ptr write_user_transform_fn; /* user write transform */ | ||
50 | #endif | ||
51 | |||
52 | /* These were added in libpng-1.0.2 */ | ||
53 | #ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED | ||
54 | #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ | ||
55 | defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) | ||
56 | png_voidp user_transform_ptr; /* user supplied struct for user transform */ | ||
57 | png_byte user_transform_depth; /* bit depth of user transformed pixels */ | ||
58 | png_byte user_transform_channels; /* channels in user transformed pixels */ | ||
59 | #endif | ||
60 | #endif | ||
61 | |||
62 | png_uint_32 mode; /* tells us where we are in the PNG file */ | ||
63 | png_uint_32 flags; /* flags indicating various things to libpng */ | ||
64 | png_uint_32 transformations; /* which transformations to perform */ | ||
65 | |||
66 | z_stream zstream; /* pointer to decompression structure (below) */ | ||
67 | png_bytep zbuf; /* buffer for zlib */ | ||
68 | uInt zbuf_size; /* size of zbuf (typically 65536) */ | ||
69 | #ifdef PNG_WRITE_SUPPORTED | ||
70 | |||
71 | /* Added in 1.5.4: state to keep track of whether the zstream has been | ||
72 | * initialized and if so whether it is for IDAT or some other chunk. | ||
73 | */ | ||
74 | #define PNG_ZLIB_UNINITIALIZED 0 | ||
75 | #define PNG_ZLIB_FOR_IDAT 1 | ||
76 | #define PNG_ZLIB_FOR_TEXT 2 /* anything other than IDAT */ | ||
77 | #define PNG_ZLIB_USE_MASK 3 /* bottom two bits */ | ||
78 | #define PNG_ZLIB_IN_USE 4 /* a flag value */ | ||
79 | |||
80 | png_uint_32 zlib_state; /* State of zlib initialization */ | ||
81 | /* End of material added at libpng 1.5.4 */ | ||
82 | |||
83 | int zlib_level; /* holds zlib compression level */ | ||
84 | int zlib_method; /* holds zlib compression method */ | ||
85 | int zlib_window_bits; /* holds zlib compression window bits */ | ||
86 | int zlib_mem_level; /* holds zlib compression memory level */ | ||
87 | int zlib_strategy; /* holds zlib compression strategy */ | ||
88 | #endif | ||
89 | /* Added at libpng 1.5.4 */ | ||
90 | #if defined(PNG_WRITE_COMPRESSED_TEXT_SUPPORTED) || \ | ||
91 | defined(PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED) | ||
92 | int zlib_text_level; /* holds zlib compression level */ | ||
93 | int zlib_text_method; /* holds zlib compression method */ | ||
94 | int zlib_text_window_bits; /* holds zlib compression window bits */ | ||
95 | int zlib_text_mem_level; /* holds zlib compression memory level */ | ||
96 | int zlib_text_strategy; /* holds zlib compression strategy */ | ||
97 | #endif | ||
98 | /* End of material added at libpng 1.5.4 */ | ||
99 | |||
100 | png_uint_32 width; /* width of image in pixels */ | ||
101 | png_uint_32 height; /* height of image in pixels */ | ||
102 | png_uint_32 num_rows; /* number of rows in current pass */ | ||
103 | png_uint_32 usr_width; /* width of row at start of write */ | ||
104 | png_size_t rowbytes; /* size of row in bytes */ | ||
105 | png_uint_32 iwidth; /* width of current interlaced row in pixels */ | ||
106 | png_uint_32 row_number; /* current row in interlace pass */ | ||
107 | png_uint_32 chunk_name; /* PNG_CHUNK() id of current chunk */ | ||
108 | png_bytep prev_row; /* buffer to save previous (unfiltered) row. | ||
109 | * This is a pointer into big_prev_row | ||
110 | */ | ||
111 | png_bytep row_buf; /* buffer to save current (unfiltered) row. | ||
112 | * This is a pointer into big_row_buf | ||
113 | */ | ||
114 | png_bytep sub_row; /* buffer to save "sub" row when filtering */ | ||
115 | png_bytep up_row; /* buffer to save "up" row when filtering */ | ||
116 | png_bytep avg_row; /* buffer to save "avg" row when filtering */ | ||
117 | png_bytep paeth_row; /* buffer to save "Paeth" row when filtering */ | ||
118 | png_size_t info_rowbytes; /* Added in 1.5.4: cache of updated row bytes */ | ||
119 | |||
120 | png_uint_32 idat_size; /* current IDAT size for read */ | ||
121 | png_uint_32 crc; /* current chunk CRC value */ | ||
122 | png_colorp palette; /* palette from the input file */ | ||
123 | png_uint_16 num_palette; /* number of color entries in palette */ | ||
124 | png_uint_16 num_trans; /* number of transparency values */ | ||
125 | png_byte compression; /* file compression type (always 0) */ | ||
126 | png_byte filter; /* file filter type (always 0) */ | ||
127 | png_byte interlaced; /* PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */ | ||
128 | png_byte pass; /* current interlace pass (0 - 6) */ | ||
129 | png_byte do_filter; /* row filter flags (see PNG_FILTER_ below ) */ | ||
130 | png_byte color_type; /* color type of file */ | ||
131 | png_byte bit_depth; /* bit depth of file */ | ||
132 | png_byte usr_bit_depth; /* bit depth of users row: write only */ | ||
133 | png_byte pixel_depth; /* number of bits per pixel */ | ||
134 | png_byte channels; /* number of channels in file */ | ||
135 | png_byte usr_channels; /* channels at start of write: write only */ | ||
136 | png_byte sig_bytes; /* magic bytes read/written from start of file */ | ||
137 | png_byte maximum_pixel_depth; | ||
138 | /* pixel depth used for the row buffers */ | ||
139 | png_byte transformed_pixel_depth; | ||
140 | /* pixel depth after read/write transforms */ | ||
141 | png_byte io_chunk_string[5]; | ||
142 | /* string name of chunk */ | ||
143 | |||
144 | #if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED) | ||
145 | png_uint_16 filler; /* filler bytes for pixel expansion */ | ||
146 | #endif | ||
147 | |||
148 | #if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) ||\ | ||
149 | defined(PNG_READ_ALPHA_MODE_SUPPORTED) | ||
150 | png_byte background_gamma_type; | ||
151 | png_fixed_point background_gamma; | ||
152 | png_color_16 background; /* background color in screen gamma space */ | ||
153 | #ifdef PNG_READ_GAMMA_SUPPORTED | ||
154 | png_color_16 background_1; /* background normalized to gamma 1.0 */ | ||
155 | #endif | ||
156 | #endif /* PNG_bKGD_SUPPORTED */ | ||
157 | |||
158 | #ifdef PNG_WRITE_FLUSH_SUPPORTED | ||
159 | png_flush_ptr output_flush_fn; /* Function for flushing output */ | ||
160 | png_uint_32 flush_dist; /* how many rows apart to flush, 0 - no flush */ | ||
161 | png_uint_32 flush_rows; /* number of rows written since last flush */ | ||
162 | #endif | ||
163 | |||
164 | #ifdef PNG_READ_GAMMA_SUPPORTED | ||
165 | int gamma_shift; /* number of "insignificant" bits in 16-bit gamma */ | ||
166 | png_fixed_point gamma; /* file gamma value */ | ||
167 | png_fixed_point screen_gamma; /* screen gamma value (display_exponent) */ | ||
168 | |||
169 | png_bytep gamma_table; /* gamma table for 8-bit depth files */ | ||
170 | png_uint_16pp gamma_16_table; /* gamma table for 16-bit depth files */ | ||
171 | #if defined(PNG_READ_BACKGROUND_SUPPORTED) || \ | ||
172 | defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \ | ||
173 | defined(PNG_READ_RGB_TO_GRAY_SUPPORTED) | ||
174 | png_bytep gamma_from_1; /* converts from 1.0 to screen */ | ||
175 | png_bytep gamma_to_1; /* converts from file to 1.0 */ | ||
176 | png_uint_16pp gamma_16_from_1; /* converts from 1.0 to screen */ | ||
177 | png_uint_16pp gamma_16_to_1; /* converts from file to 1.0 */ | ||
178 | #endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */ | ||
179 | #endif | ||
180 | |||
181 | #if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_sBIT_SUPPORTED) | ||
182 | png_color_8 sig_bit; /* significant bits in each available channel */ | ||
183 | #endif | ||
184 | |||
185 | #if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED) | ||
186 | png_color_8 shift; /* shift for significant bit tranformation */ | ||
187 | #endif | ||
188 | |||
189 | #if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \ | ||
190 | || defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) | ||
191 | png_bytep trans_alpha; /* alpha values for paletted files */ | ||
192 | png_color_16 trans_color; /* transparent color for non-paletted files */ | ||
193 | #endif | ||
194 | |||
195 | png_read_status_ptr read_row_fn; /* called after each row is decoded */ | ||
196 | png_write_status_ptr write_row_fn; /* called after each row is encoded */ | ||
197 | #ifdef PNG_PROGRESSIVE_READ_SUPPORTED | ||
198 | png_progressive_info_ptr info_fn; /* called after header data fully read */ | ||
199 | png_progressive_row_ptr row_fn; /* called after a prog. row is decoded */ | ||
200 | png_progressive_end_ptr end_fn; /* called after image is complete */ | ||
201 | png_bytep save_buffer_ptr; /* current location in save_buffer */ | ||
202 | png_bytep save_buffer; /* buffer for previously read data */ | ||
203 | png_bytep current_buffer_ptr; /* current location in current_buffer */ | ||
204 | png_bytep current_buffer; /* buffer for recently used data */ | ||
205 | png_uint_32 push_length; /* size of current input chunk */ | ||
206 | png_uint_32 skip_length; /* bytes to skip in input data */ | ||
207 | png_size_t save_buffer_size; /* amount of data now in save_buffer */ | ||
208 | png_size_t save_buffer_max; /* total size of save_buffer */ | ||
209 | png_size_t buffer_size; /* total amount of available input data */ | ||
210 | png_size_t current_buffer_size; /* amount of data now in current_buffer */ | ||
211 | int process_mode; /* what push library is currently doing */ | ||
212 | int cur_palette; /* current push library palette index */ | ||
213 | |||
214 | # ifdef PNG_TEXT_SUPPORTED | ||
215 | png_size_t current_text_size; /* current size of text input data */ | ||
216 | png_size_t current_text_left; /* how much text left to read in input */ | ||
217 | png_charp current_text; /* current text chunk buffer */ | ||
218 | png_charp current_text_ptr; /* current location in current_text */ | ||
219 | # endif /* PNG_PROGRESSIVE_READ_SUPPORTED && PNG_TEXT_SUPPORTED */ | ||
220 | |||
221 | #endif /* PNG_PROGRESSIVE_READ_SUPPORTED */ | ||
222 | |||
223 | #if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__) | ||
224 | /* For the Borland special 64K segment handler */ | ||
225 | png_bytepp offset_table_ptr; | ||
226 | png_bytep offset_table; | ||
227 | png_uint_16 offset_table_number; | ||
228 | png_uint_16 offset_table_count; | ||
229 | png_uint_16 offset_table_count_free; | ||
230 | #endif | ||
231 | |||
232 | #ifdef PNG_READ_QUANTIZE_SUPPORTED | ||
233 | png_bytep palette_lookup; /* lookup table for quantizing */ | ||
234 | png_bytep quantize_index; /* index translation for palette files */ | ||
235 | #endif | ||
236 | |||
237 | #if defined(PNG_READ_QUANTIZE_SUPPORTED) || defined(PNG_hIST_SUPPORTED) | ||
238 | png_uint_16p hist; /* histogram */ | ||
239 | #endif | ||
240 | |||
241 | #ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED | ||
242 | png_byte heuristic_method; /* heuristic for row filter selection */ | ||
243 | png_byte num_prev_filters; /* number of weights for previous rows */ | ||
244 | png_bytep prev_filters; /* filter type(s) of previous row(s) */ | ||
245 | png_uint_16p filter_weights; /* weight(s) for previous line(s) */ | ||
246 | png_uint_16p inv_filter_weights; /* 1/weight(s) for previous line(s) */ | ||
247 | png_uint_16p filter_costs; /* relative filter calculation cost */ | ||
248 | png_uint_16p inv_filter_costs; /* 1/relative filter calculation cost */ | ||
249 | #endif | ||
250 | |||
251 | #ifdef PNG_TIME_RFC1123_SUPPORTED | ||
252 | char time_buffer[29]; /* String to hold RFC 1123 time text */ | ||
253 | #endif | ||
254 | |||
255 | /* New members added in libpng-1.0.6 */ | ||
256 | |||
257 | png_uint_32 free_me; /* flags items libpng is responsible for freeing */ | ||
258 | |||
259 | #ifdef PNG_USER_CHUNKS_SUPPORTED | ||
260 | png_voidp user_chunk_ptr; | ||
261 | png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */ | ||
262 | #endif | ||
263 | |||
264 | #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED | ||
265 | int num_chunk_list; | ||
266 | png_bytep chunk_list; | ||
267 | #endif | ||
268 | |||
269 | #ifdef PNG_READ_sRGB_SUPPORTED | ||
270 | /* Added in 1.5.5 to record an sRGB chunk in the png. */ | ||
271 | png_byte is_sRGB; | ||
272 | #endif | ||
273 | |||
274 | /* New members added in libpng-1.0.3 */ | ||
275 | #ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED | ||
276 | png_byte rgb_to_gray_status; | ||
277 | /* Added in libpng 1.5.5 to record setting of coefficients: */ | ||
278 | png_byte rgb_to_gray_coefficients_set; | ||
279 | /* These were changed from png_byte in libpng-1.0.6 */ | ||
280 | png_uint_16 rgb_to_gray_red_coeff; | ||
281 | png_uint_16 rgb_to_gray_green_coeff; | ||
282 | /* deleted in 1.5.5: rgb_to_gray_blue_coeff; */ | ||
283 | #endif | ||
284 | |||
285 | /* New member added in libpng-1.0.4 (renamed in 1.0.9) */ | ||
286 | #if defined(PNG_MNG_FEATURES_SUPPORTED) | ||
287 | /* Changed from png_byte to png_uint_32 at version 1.2.0 */ | ||
288 | png_uint_32 mng_features_permitted; | ||
289 | #endif | ||
290 | |||
291 | /* New member added in libpng-1.0.9, ifdef'ed out in 1.0.12, enabled in 1.2.0 */ | ||
292 | #ifdef PNG_MNG_FEATURES_SUPPORTED | ||
293 | png_byte filter_type; | ||
294 | #endif | ||
295 | |||
296 | /* New members added in libpng-1.2.0 */ | ||
297 | |||
298 | /* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */ | ||
299 | #ifdef PNG_USER_MEM_SUPPORTED | ||
300 | png_voidp mem_ptr; /* user supplied struct for mem functions */ | ||
301 | png_malloc_ptr malloc_fn; /* function for allocating memory */ | ||
302 | png_free_ptr free_fn; /* function for freeing memory */ | ||
303 | #endif | ||
304 | |||
305 | /* New member added in libpng-1.0.13 and 1.2.0 */ | ||
306 | png_bytep big_row_buf; /* buffer to save current (unfiltered) row */ | ||
307 | |||
308 | #ifdef PNG_READ_QUANTIZE_SUPPORTED | ||
309 | /* The following three members were added at version 1.0.14 and 1.2.4 */ | ||
310 | png_bytep quantize_sort; /* working sort array */ | ||
311 | png_bytep index_to_palette; /* where the original index currently is | ||
312 | in the palette */ | ||
313 | png_bytep palette_to_index; /* which original index points to this | ||
314 | palette color */ | ||
315 | #endif | ||
316 | |||
317 | /* New members added in libpng-1.0.16 and 1.2.6 */ | ||
318 | png_byte compression_type; | ||
319 | |||
320 | #ifdef PNG_USER_LIMITS_SUPPORTED | ||
321 | png_uint_32 user_width_max; | ||
322 | png_uint_32 user_height_max; | ||
323 | |||
324 | /* Added in libpng-1.4.0: Total number of sPLT, text, and unknown | ||
325 | * chunks that can be stored (0 means unlimited). | ||
326 | */ | ||
327 | png_uint_32 user_chunk_cache_max; | ||
328 | |||
329 | /* Total memory that a zTXt, sPLT, iTXt, iCCP, or unknown chunk | ||
330 | * can occupy when decompressed. 0 means unlimited. | ||
331 | */ | ||
332 | png_alloc_size_t user_chunk_malloc_max; | ||
333 | #endif | ||
334 | |||
335 | /* New member added in libpng-1.0.25 and 1.2.17 */ | ||
336 | #ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED | ||
337 | /* Storage for unknown chunk that the library doesn't recognize. */ | ||
338 | png_unknown_chunk unknown_chunk; | ||
339 | #endif | ||
340 | |||
341 | /* New member added in libpng-1.2.26 */ | ||
342 | png_size_t old_big_row_buf_size; | ||
343 | |||
344 | /* New member added in libpng-1.2.30 */ | ||
345 | png_charp chunkdata; /* buffer for reading chunk data */ | ||
346 | |||
347 | #ifdef PNG_IO_STATE_SUPPORTED | ||
348 | /* New member added in libpng-1.4.0 */ | ||
349 | png_uint_32 io_state; | ||
350 | #endif | ||
351 | |||
352 | /* New member added in libpng-1.5.6 */ | ||
353 | png_bytep big_prev_row; | ||
354 | |||
355 | void (*read_filter[PNG_FILTER_VALUE_LAST-1])(png_row_infop row_info, | ||
356 | png_bytep row, png_const_bytep prev_row); | ||
357 | }; | ||
358 | #endif /* PNGSTRUCT_H */ | ||