1Image::PNG::Const(3)  User Contributed Perl Documentation Image::PNG::Const(3)
2
3
4

NAME

6       Image::PNG::Const - Constants for libpng
7

SYNOPSIS

9           # Get just the constants you need:
10           use Image::PNG::Const qw/PNG_TRANSFORM_INVERT_ALPHA
11                                    PNG_COLOR_MASK_ALPHA/;
12           # Get everything:
13           use Image::PNG::Const ':all';
14
15       This module is a helper for Image::PNG::Libpng. It contains no
16       functions, only constants.
17

CONSTANTS

19       This file contains the following constants, from the header file of the
20       PNG library, "png.h":
21
22       PNG_AFTER_IDAT
23           PNG_AFTER_IDAT has value 0x08.
24
25       PNG_ALL_FILTERS
26           PNG_ALL_FILTERS has value ((0x08 | 0x10 | 0x20) | 0x40 | 0x80).
27
28       PNG_ALL_MNG_FEATURES
29           PNG_ALL_MNG_FEATURES has value 0x05.
30
31       PNG_ALPHA_ASSOCIATED
32           PNG_ALPHA_ASSOCIATED has value 1.
33
34       PNG_ALPHA_BROKEN
35           PNG_ALPHA_BROKEN has value 3.
36
37       PNG_ALPHA_OPTIMIZED
38           PNG_ALPHA_OPTIMIZED has value 2.
39
40       PNG_ALPHA_PNG
41           PNG_ALPHA_PNG has value 0.
42
43       PNG_ALPHA_PREMULTIPLIED
44           PNG_ALPHA_PREMULTIPLIED has value 1.
45
46       PNG_ALPHA_STANDARD
47           PNG_ALPHA_STANDARD has value 1.
48
49       PNG_ARM_NEON
50           PNG_ARM_NEON has value 0.
51
52       PNG_BACKGROUND_GAMMA_FILE
53           PNG_BACKGROUND_GAMMA_FILE has value 2.
54
55       PNG_BACKGROUND_GAMMA_SCREEN
56           PNG_BACKGROUND_GAMMA_SCREEN has value 1.
57
58       PNG_BACKGROUND_GAMMA_UNIQUE
59           PNG_BACKGROUND_GAMMA_UNIQUE has value 3.
60
61       PNG_BACKGROUND_GAMMA_UNKNOWN
62           PNG_BACKGROUND_GAMMA_UNKNOWN has value 0.
63
64       PNG_BLEND_OP_OVER
65           PNG_BLEND_OP_OVER has value 0x01.
66
67       PNG_BLEND_OP_SOURCE
68           PNG_BLEND_OP_SOURCE has value 0x00.
69
70       PNG_COLOR_MASK_ALPHA
71           PNG_COLOR_MASK_ALPHA has value 4.
72
73       PNG_COLOR_MASK_COLOR
74           PNG_COLOR_MASK_COLOR has value 2.
75
76       PNG_COLOR_MASK_PALETTE
77           PNG_COLOR_MASK_PALETTE has value 1.
78
79       PNG_COLOR_TYPE_GA
80           PNG_COLOR_TYPE_GA has value (4).
81
82       PNG_COLOR_TYPE_GRAY
83           PNG_COLOR_TYPE_GRAY has value 0.
84
85       PNG_COLOR_TYPE_GRAY_ALPHA
86           PNG_COLOR_TYPE_GRAY_ALPHA has value (4).
87
88       PNG_COLOR_TYPE_PALETTE
89           PNG_COLOR_TYPE_PALETTE has value (2 | 1).
90
91       PNG_COLOR_TYPE_RGB
92           PNG_COLOR_TYPE_RGB has value (2).
93
94       PNG_COLOR_TYPE_RGBA
95           PNG_COLOR_TYPE_RGBA has value (2 | 4).
96
97       PNG_COLOR_TYPE_RGB_ALPHA
98           PNG_COLOR_TYPE_RGB_ALPHA has value (2 | 4).
99
100       PNG_COMPRESSION_TYPE_BASE
101           PNG_COMPRESSION_TYPE_BASE has value 0.
102
103       PNG_COMPRESSION_TYPE_DEFAULT
104           PNG_COMPRESSION_TYPE_DEFAULT has value 0.
105
106       PNG_CRC_DEFAULT
107           PNG_CRC_DEFAULT has value 0.
108
109       PNG_CRC_ERROR_QUIT
110           PNG_CRC_ERROR_QUIT has value 1.
111
112       PNG_CRC_NO_CHANGE
113           PNG_CRC_NO_CHANGE has value 5.
114
115       PNG_CRC_QUIET_USE
116           PNG_CRC_QUIET_USE has value 4.
117
118       PNG_CRC_WARN_DISCARD
119           PNG_CRC_WARN_DISCARD has value 2.
120
121       PNG_CRC_WARN_USE
122           PNG_CRC_WARN_USE has value 3.
123
124       PNG_DEFAULT_sRGB
125           PNG_DEFAULT_sRGB has value -1.
126
127       PNG_DISPOSE_OP_BACKGROUND
128           PNG_DISPOSE_OP_BACKGROUND has value 0x01.
129
130       PNG_DISPOSE_OP_NONE
131           PNG_DISPOSE_OP_NONE has value 0x00.
132
133       PNG_DISPOSE_OP_PREVIOUS
134           PNG_DISPOSE_OP_PREVIOUS has value 0x02.
135
136       PNG_EQUATION_ARBITRARY
137           PNG_EQUATION_ARBITRARY has value 2.
138
139       PNG_EQUATION_BASE_E
140           PNG_EQUATION_BASE_E has value 1.
141
142       PNG_EQUATION_HYPERBOLIC
143           PNG_EQUATION_HYPERBOLIC has value 3.
144
145       PNG_EQUATION_LINEAR
146           PNG_EQUATION_LINEAR has value 0.
147
148       PNG_ERROR_ACTION_ERROR
149           PNG_ERROR_ACTION_ERROR has value 3.
150
151       PNG_ERROR_ACTION_NONE
152           PNG_ERROR_ACTION_NONE has value 1.
153
154       PNG_ERROR_ACTION_WARN
155           PNG_ERROR_ACTION_WARN has value 2.
156
157       PNG_FAST_FILTERS
158           PNG_FAST_FILTERS has value (0x08 | 0x10 | 0x20).
159
160       PNG_FILLER_AFTER
161           PNG_FILLER_AFTER has value 1.
162
163       PNG_FILLER_BEFORE
164           PNG_FILLER_BEFORE has value 0.
165
166       PNG_FILTER_AVG
167           PNG_FILTER_AVG has value 0x40.
168
169       PNG_FILTER_HEURISTIC_DEFAULT
170           PNG_FILTER_HEURISTIC_DEFAULT has value 0.
171
172       PNG_FILTER_HEURISTIC_UNWEIGHTED
173           PNG_FILTER_HEURISTIC_UNWEIGHTED has value 1.
174
175       PNG_FILTER_HEURISTIC_WEIGHTED
176           PNG_FILTER_HEURISTIC_WEIGHTED has value 2.
177
178       PNG_FILTER_NONE
179           PNG_FILTER_NONE has value 0x08.
180
181       PNG_FILTER_PAETH
182           PNG_FILTER_PAETH has value 0x80.
183
184       PNG_FILTER_SUB
185           PNG_FILTER_SUB has value 0x10.
186
187       PNG_FILTER_TYPE_BASE
188           PNG_FILTER_TYPE_BASE has value 0.
189
190       PNG_FILTER_TYPE_DEFAULT
191           PNG_FILTER_TYPE_DEFAULT has value 0.
192
193       PNG_FILTER_UP
194           PNG_FILTER_UP has value 0x20.
195
196       PNG_FILTER_VALUE_AVG
197           PNG_FILTER_VALUE_AVG has value 3.
198
199       PNG_FILTER_VALUE_NONE
200           PNG_FILTER_VALUE_NONE has value 0.
201
202       PNG_FILTER_VALUE_PAETH
203           PNG_FILTER_VALUE_PAETH has value 4.
204
205       PNG_FILTER_VALUE_SUB
206           PNG_FILTER_VALUE_SUB has value 1.
207
208       PNG_FILTER_VALUE_UP
209           PNG_FILTER_VALUE_UP has value 2.
210
211       PNG_FLAG_MNG_EMPTY_PLTE
212           PNG_FLAG_MNG_EMPTY_PLTE has value 0x01.
213
214       PNG_FLAG_MNG_FILTER_64
215           PNG_FLAG_MNG_FILTER_64 has value 0x04.
216
217       PNG_FORMAT_ABGR
218           PNG_FORMAT_ABGR has value (((0x02|0x10)|0x01)|0x20).
219
220       PNG_FORMAT_ABGR_COLORMAP
221           PNG_FORMAT_ABGR_COLORMAP has value
222           ((((0x02|0x10)|0x01)|0x20)|0x08).
223
224       PNG_FORMAT_AG
225           PNG_FORMAT_AG has value (0x01|0x20).
226
227       PNG_FORMAT_ARGB
228           PNG_FORMAT_ARGB has value ((0x02|0x01)|0x20).
229
230       PNG_FORMAT_ARGB_COLORMAP
231           PNG_FORMAT_ARGB_COLORMAP has value (((0x02|0x01)|0x20)|0x08).
232
233       PNG_FORMAT_BGR
234           PNG_FORMAT_BGR has value (0x02|0x10).
235
236       PNG_FORMAT_BGRA
237           PNG_FORMAT_BGRA has value ((0x02|0x10)|0x01).
238
239       PNG_FORMAT_BGRA_COLORMAP
240           PNG_FORMAT_BGRA_COLORMAP has value (((0x02|0x10)|0x01)|0x08).
241
242       PNG_FORMAT_BGR_COLORMAP
243           PNG_FORMAT_BGR_COLORMAP has value ((0x02|0x10)|0x08).
244
245       PNG_FORMAT_FLAG_AFIRST
246           PNG_FORMAT_FLAG_AFIRST has value 0x20.
247
248       PNG_FORMAT_FLAG_ALPHA
249           PNG_FORMAT_FLAG_ALPHA has value 0x01.
250
251       PNG_FORMAT_FLAG_ASSOCIATED_ALPHA
252           PNG_FORMAT_FLAG_ASSOCIATED_ALPHA has value 0x40.
253
254       PNG_FORMAT_FLAG_BGR
255           PNG_FORMAT_FLAG_BGR has value 0x10.
256
257       PNG_FORMAT_FLAG_COLOR
258           PNG_FORMAT_FLAG_COLOR has value 0x02.
259
260       PNG_FORMAT_FLAG_COLORMAP
261           PNG_FORMAT_FLAG_COLORMAP has value 0x08.
262
263       PNG_FORMAT_FLAG_LINEAR
264           PNG_FORMAT_FLAG_LINEAR has value 0x04.
265
266       PNG_FORMAT_GA
267           PNG_FORMAT_GA has value 0x01.
268
269       PNG_FORMAT_GRAY
270           PNG_FORMAT_GRAY has value 0.
271
272       PNG_FORMAT_LINEAR_RGB
273           PNG_FORMAT_LINEAR_RGB has value (0x04|0x02).
274
275       PNG_FORMAT_LINEAR_Y
276           PNG_FORMAT_LINEAR_Y has value 0x04.
277
278       PNG_FORMAT_LINEAR_Y_ALPHA
279           PNG_FORMAT_LINEAR_Y_ALPHA has value (0x04|0x01).
280
281       PNG_FORMAT_RGB
282           PNG_FORMAT_RGB has value 0x02.
283
284       PNG_FORMAT_RGBA
285           PNG_FORMAT_RGBA has value (0x02|0x01).
286
287       PNG_FORMAT_RGBA_COLORMAP
288           PNG_FORMAT_RGBA_COLORMAP has value ((0x02|0x01)|0x08).
289
290       PNG_FORMAT_RGB_COLORMAP
291           PNG_FORMAT_RGB_COLORMAP has value (0x02|0x08).
292
293       PNG_FP_1
294           PNG_FP_1 has value 100000.
295
296       PNG_FP_HALF
297           PNG_FP_HALF has value 50000.
298
299       PNG_FP_MIN
300           PNG_FP_MIN has value (-PNG_FP_MAX).
301
302       PNG_FREE_ALL
303           PNG_FREE_ALL has value 0xffff.
304
305       PNG_FREE_EXIF
306           PNG_FREE_EXIF has value 0x8000.
307
308       PNG_FREE_HIST
309           PNG_FREE_HIST has value 0x0008.
310
311       PNG_FREE_ICCP
312           PNG_FREE_ICCP has value 0x0010.
313
314       PNG_FREE_MUL
315           PNG_FREE_MUL has value 0x4220.
316
317       PNG_FREE_PCAL
318           PNG_FREE_PCAL has value 0x0080.
319
320       PNG_FREE_PLTE
321           PNG_FREE_PLTE has value 0x1000.
322
323       PNG_FREE_ROWS
324           PNG_FREE_ROWS has value 0x0040.
325
326       PNG_FREE_SCAL
327           PNG_FREE_SCAL has value 0x0100.
328
329       PNG_FREE_SPLT
330           PNG_FREE_SPLT has value 0x0020.
331
332       PNG_FREE_TEXT
333           PNG_FREE_TEXT has value 0x4000.
334
335       PNG_FREE_TRNS
336           PNG_FREE_TRNS has value 0x2000.
337
338       PNG_FREE_UNKN
339           PNG_FREE_UNKN has value 0x0200.
340
341       PNG_GAMMA_LINEAR
342           PNG_GAMMA_LINEAR has value 100000.
343
344       PNG_GAMMA_MAC_18
345           PNG_GAMMA_MAC_18 has value -2.
346
347       PNG_GAMMA_THRESHOLD
348           PNG_GAMMA_THRESHOLD has value (PNG_GAMMA_THRESHOLD_FIXED*.00001).
349
350       PNG_GAMMA_sRGB
351           PNG_GAMMA_sRGB has value 220000.
352
353       PNG_HANDLE_CHUNK_ALWAYS
354           PNG_HANDLE_CHUNK_ALWAYS has value 3.
355
356       PNG_HANDLE_CHUNK_AS_DEFAULT
357           PNG_HANDLE_CHUNK_AS_DEFAULT has value 0.
358
359       PNG_HANDLE_CHUNK_IF_SAFE
360           PNG_HANDLE_CHUNK_IF_SAFE has value 2.
361
362       PNG_HANDLE_CHUNK_NEVER
363           PNG_HANDLE_CHUNK_NEVER has value 1.
364
365       PNG_HAVE_IHDR
366           PNG_HAVE_IHDR has value 0x01.
367
368       PNG_HAVE_PLTE
369           PNG_HAVE_PLTE has value 0x02.
370
371       PNG_IGNORE_ADLER32
372           PNG_IGNORE_ADLER32 has value 8.
373
374       PNG_IMAGE_ERROR
375           PNG_IMAGE_ERROR has value 2.
376
377       PNG_IMAGE_FLAG_16BIT_sRGB
378           PNG_IMAGE_FLAG_16BIT_sRGB has value 0x04.
379
380       PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB
381           PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB has value 0x01.
382
383       PNG_IMAGE_FLAG_FAST
384           PNG_IMAGE_FLAG_FAST has value 0x02.
385
386       PNG_IMAGE_VERSION
387           PNG_IMAGE_VERSION has value 1.
388
389       PNG_IMAGE_WARNING
390           PNG_IMAGE_WARNING has value 1.
391
392       PNG_INFO_IDAT
393           PNG_INFO_IDAT has value 0x8000.
394
395       PNG_INFO_PLTE
396           PNG_INFO_PLTE has value 0x0008.
397
398       PNG_INFO_acTL
399           PNG_INFO_acTL has value 0x20000.
400
401       PNG_INFO_bKGD
402           PNG_INFO_bKGD has value 0x0020.
403
404       PNG_INFO_cHRM
405           PNG_INFO_cHRM has value 0x0004.
406
407       PNG_INFO_eXIf
408           PNG_INFO_eXIf has value 0x10000.
409
410       PNG_INFO_fcTL
411           PNG_INFO_fcTL has value 0x40000.
412
413       PNG_INFO_gAMA
414           PNG_INFO_gAMA has value 0x0001.
415
416       PNG_INFO_hIST
417           PNG_INFO_hIST has value 0x0040.
418
419       PNG_INFO_iCCP
420           PNG_INFO_iCCP has value 0x1000.
421
422       PNG_INFO_oFFs
423           PNG_INFO_oFFs has value 0x0100.
424
425       PNG_INFO_pCAL
426           PNG_INFO_pCAL has value 0x0400.
427
428       PNG_INFO_pHYs
429           PNG_INFO_pHYs has value 0x0080.
430
431       PNG_INFO_sBIT
432           PNG_INFO_sBIT has value 0x0002.
433
434       PNG_INFO_sCAL
435           PNG_INFO_sCAL has value 0x4000.
436
437       PNG_INFO_sPLT
438           PNG_INFO_sPLT has value 0x2000.
439
440       PNG_INFO_sRGB
441           PNG_INFO_sRGB has value 0x0800.
442
443       PNG_INFO_tIME
444           PNG_INFO_tIME has value 0x0200.
445
446       PNG_INFO_tRNS
447           PNG_INFO_tRNS has value 0x0010.
448
449       PNG_INTERLACE_ADAM7
450           PNG_INTERLACE_ADAM7 has value 1.
451
452       PNG_INTERLACE_ADAM7_PASSES
453           PNG_INTERLACE_ADAM7_PASSES has value 7.
454
455       PNG_INTERLACE_NONE
456           PNG_INTERLACE_NONE has value 0.
457
458       PNG_INTRAPIXEL_DIFFERENCING
459           PNG_INTRAPIXEL_DIFFERENCING has value 64.
460
461       PNG_IO_CHUNK_CRC
462           PNG_IO_CHUNK_CRC has value 0x0080.
463
464       PNG_IO_CHUNK_DATA
465           PNG_IO_CHUNK_DATA has value 0x0040.
466
467       PNG_IO_CHUNK_HDR
468           PNG_IO_CHUNK_HDR has value 0x0020.
469
470       PNG_IO_MASK_LOC
471           PNG_IO_MASK_LOC has value 0x00f0.
472
473       PNG_IO_MASK_OP
474           PNG_IO_MASK_OP has value 0x000f.
475
476       PNG_IO_NONE
477           PNG_IO_NONE has value 0x0000.
478
479       PNG_IO_READING
480           PNG_IO_READING has value 0x0001.
481
482       PNG_IO_SIGNATURE
483           PNG_IO_SIGNATURE has value 0x0010.
484
485       PNG_IO_WRITING
486           PNG_IO_WRITING has value 0x0002.
487
488       PNG_ITXT_COMPRESSION_NONE
489           PNG_ITXT_COMPRESSION_NONE has value 1.
490
491       PNG_ITXT_COMPRESSION_zTXt
492           PNG_ITXT_COMPRESSION_zTXt has value 2.
493
494       PNG_KEYWORD_MAX_LENGTH
495           PNG_KEYWORD_MAX_LENGTH has value 79.
496
497       PNG_MAXIMUM_INFLATE_WINDOW
498           PNG_MAXIMUM_INFLATE_WINDOW has value 2.
499
500       PNG_MAX_PALETTE_LENGTH
501           PNG_MAX_PALETTE_LENGTH has value 256.
502
503       PNG_MIPS_MSA
504           PNG_MIPS_MSA has value 6.
505
506       PNG_NO_FILTERS
507           PNG_NO_FILTERS has value 0x00.
508
509       PNG_OFFSET_MICROMETER
510           PNG_OFFSET_MICROMETER has value 1.
511
512       PNG_OFFSET_PIXEL
513           PNG_OFFSET_PIXEL has value 0.
514
515       PNG_OPTION_INVALID
516           PNG_OPTION_INVALID has value 1.
517
518       PNG_OPTION_NEXT
519           PNG_OPTION_NEXT has value 12.
520
521       PNG_OPTION_OFF
522           PNG_OPTION_OFF has value 2.
523
524       PNG_OPTION_ON
525           PNG_OPTION_ON has value 3.
526
527       PNG_OPTION_UNSET
528           PNG_OPTION_UNSET has value 0.
529
530       PNG_POWERPC_VSX
531           PNG_POWERPC_VSX has value 10.
532
533       PNG_RESOLUTION_METER
534           PNG_RESOLUTION_METER has value 1.
535
536       PNG_RESOLUTION_UNKNOWN
537           PNG_RESOLUTION_UNKNOWN has value 0.
538
539       PNG_RGB_TO_GRAY_DEFAULT
540           PNG_RGB_TO_GRAY_DEFAULT has value (-1).
541
542       PNG_SCALE_METER
543           PNG_SCALE_METER has value 1.
544
545       PNG_SCALE_RADIAN
546           PNG_SCALE_RADIAN has value 2.
547
548       PNG_SCALE_UNKNOWN
549           PNG_SCALE_UNKNOWN has value 0.
550
551       PNG_SKIP_sRGB_CHECK_PROFILE
552           PNG_SKIP_sRGB_CHECK_PROFILE has value 4.
553
554       PNG_TEXT_COMPRESSION_NONE
555           PNG_TEXT_COMPRESSION_NONE has value -1.
556
557       PNG_TEXT_COMPRESSION_NONE_WR
558           PNG_TEXT_COMPRESSION_NONE_WR has value -3.
559
560       PNG_TEXT_COMPRESSION_zTXt
561           PNG_TEXT_COMPRESSION_zTXt has value 0.
562
563       PNG_TEXT_COMPRESSION_zTXt_WR
564           PNG_TEXT_COMPRESSION_zTXt_WR has value -2.
565
566       PNG_TRANSFORM_BGR
567           PNG_TRANSFORM_BGR has value 0x0080.
568
569       PNG_TRANSFORM_EXPAND
570           PNG_TRANSFORM_EXPAND has value 0x0010.
571
572       PNG_TRANSFORM_EXPAND_16
573           PNG_TRANSFORM_EXPAND_16 has value 0x4000.
574
575       PNG_TRANSFORM_GRAY_TO_RGB
576           PNG_TRANSFORM_GRAY_TO_RGB has value 0x2000.
577
578       PNG_TRANSFORM_IDENTITY
579           PNG_TRANSFORM_IDENTITY has value 0x0000.
580
581       PNG_TRANSFORM_INVERT_ALPHA
582           PNG_TRANSFORM_INVERT_ALPHA has value 0x0400.
583
584       PNG_TRANSFORM_INVERT_MONO
585           PNG_TRANSFORM_INVERT_MONO has value 0x0020.
586
587       PNG_TRANSFORM_PACKING
588           PNG_TRANSFORM_PACKING has value 0x0004.
589
590       PNG_TRANSFORM_PACKSWAP
591           PNG_TRANSFORM_PACKSWAP has value 0x0008.
592
593       PNG_TRANSFORM_SCALE_16
594           PNG_TRANSFORM_SCALE_16 has value 0x8000.
595
596       PNG_TRANSFORM_SHIFT
597           PNG_TRANSFORM_SHIFT has value 0x0040.
598
599       PNG_TRANSFORM_STRIP_16
600           PNG_TRANSFORM_STRIP_16 has value 0x0001.
601
602       PNG_TRANSFORM_STRIP_ALPHA
603           PNG_TRANSFORM_STRIP_ALPHA has value 0x0002.
604
605       PNG_TRANSFORM_STRIP_FILLER
606           PNG_TRANSFORM_STRIP_FILLER has value 0x0800.
607
608       PNG_TRANSFORM_STRIP_FILLER_AFTER
609           PNG_TRANSFORM_STRIP_FILLER_AFTER has value 0x1000.
610
611       PNG_TRANSFORM_STRIP_FILLER_BEFORE
612           PNG_TRANSFORM_STRIP_FILLER_BEFORE has value 0x0800.
613
614       PNG_TRANSFORM_SWAP_ALPHA
615           PNG_TRANSFORM_SWAP_ALPHA has value 0x0100.
616
617       PNG_TRANSFORM_SWAP_ENDIAN
618           PNG_TRANSFORM_SWAP_ENDIAN has value 0x0200.
619
620       PNG_sRGB_INTENT_ABSOLUTE
621           PNG_sRGB_INTENT_ABSOLUTE has value 3.
622
623       PNG_sRGB_INTENT_PERCEPTUAL
624           PNG_sRGB_INTENT_PERCEPTUAL has value 0.
625
626       PNG_sRGB_INTENT_RELATIVE
627           PNG_sRGB_INTENT_RELATIVE has value 1.
628
629       PNG_sRGB_INTENT_SATURATION
630           PNG_sRGB_INTENT_SATURATION has value 2.
631

EXPORTS

633       Nothing is exported by default, but all the symbols in this module can
634       be exported on request. There is one export tag, 'all', which exports
635       all the symbols in this module:
636
637           use Image::PNG::Const ':all';
638

ABOUT THIS MODULE

640       This Perl module was generated from the file png.h supplied with
641       version 1.6.37 of libpng.
642

AUTHOR

644       Ben Bullock, <bkb@cpan.org>
645
647       This package and associated files are copyright (C) 2011-2021 Ben
648       Bullock.
649
650       You can use, copy, modify and redistribute this package and associated
651       files under the Perl Artistic Licence or the GNU General Public
652       Licence.
653
654
655
656perl v5.36.0                      2022-07-22              Image::PNG::Const(3)
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