X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a626cc03053700ca5bdbf0243831bec528e6fc4d..388703a5734f2832c664b4e2d94a4dcfedfd1958:/src/png/png.h?ds=sidebyside diff --git a/src/png/png.h b/src/png/png.h index b48e1507e7..b57acb4141 100644 --- a/src/png/png.h +++ b/src/png/png.h @@ -1,125 +1,197 @@ - /* png.h - header file for PNG reference library * - * libpng version 1.0.3 - January 14, 1999 - * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. - * Copyright (c) 1996, 1997 Andreas Dilger - * Copyright (c) 1998, 1999 Glenn Randers-Pehrson + * libpng version 1.2.7 - September 12, 2004 + * Copyright (c) 1998-2004 Glenn Randers-Pehrson + * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) + * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) + * + * Authors and maintainers: + * libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat + * libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger + * libpng versions 0.97, January 1998, through 1.2.7 - September 12, 2004: Glenn + * See also "Contributing Authors", below. * - * Y2K compliance in libpng: - * ========================= - * - * January 13, 1999 - * - * Since the PNG Development group is an ad-hoc body, we can't make - * an official declaration. - * - * This is your unofficial assurance that libpng from version 0.81 and - * upward are Y2K compliant. It is my belief that earlier versions were - * also Y2K compliant. - * - * Libpng only has three year fields. One is a 2-byte unsigned integer - * that will hold years up to 65535. The other two hold the date in text - * format, and will hold years up to 9999. - * - * The integer is - * "png_uint_16 year" in png_time_struct. - * - * The strings are - * "png_charp time_buffer" in png_struct and - * "near_time_buffer", which is a local character string in png.c. - * - * There are seven time-related functions: - * png.c: png_convert_to_rfc_1123() in png.c - * (formerly png_convert_to_rfc_1152() in error) - * png_convert_from_struct_tm() in pngwrite.c, called in pngwrite.c - * png_convert_from_time_t() in pngwrite.c - * png_get_tIME() in pngget.c - * png_handle_tIME() in pngrutil.c, called in pngread.c - * png_set_tIME() in pngset.c - * png_write_tIME() in pngwutil.c, called in pngwrite.c - * - * All handle dates properly in a Y2K environment. The - * png_convert_from_time_t() function calls gmtime() to convert from system - * clock time, which returns (year - 1900), which we properly convert to - * the full 4-digit year. There is a possibility that applications using - * libpng are not passing 4-digit years into the png_convert_to_rfc_1123() - * function, or incorrectly passing only a 2-digit year instead of - * "year - 1900" into the png_convert_from_struct_tm() function, but this - * is not under our control. The libpng documentation has always stated - * that it works with 4-digit years, and the APIs have been documented as - * such. - * - * The tIME chunk itself is also Y2K compliant. It uses a 2-byte unsigned - * integer to hold the year, and can hold years as large as 65535. - * - * - * Glenn Randers-Pehrson - * libpng maintainer - * PNG Development Group - * * Note about libpng version numbers: - * + * * Due to various miscommunications, unforeseen code incompatibilities * and occasional factors outside the authors' control, version numbering * on the library has not always been consistent and straightforward. * The following table summarizes matters since version 0.89c, which was * the first widely used release: * - * source png.h png.h shared-lib - * version string int version - * ------- ------ ----- ---------- - * 0.89c ("1.0 beta 3") 0.89 89 1.0.89 - * 0.90 ("1.0 beta 4") 0.90 90 0.90 [should have been 2.0.90] - * 0.95 ("1.0 beta 5") 0.95 95 0.95 [should have been 2.0.95] - * 0.96 ("1.0 beta 6") 0.96 96 0.96 [should have been 2.0.96] - * 0.97b ("1.00.97 beta 7") 1.00.97 97 1.0.1 [should have been 2.0.97] - * 0.97c 0.97 97 2.0.97 - * 0.98 0.98 98 2.0.98 - * 0.99 0.99 98 2.0.99 - * 0.99a-m 0.99 99 2.0.99 - * 1.00 1.00 100 2.1.0 [int should be 10000] - * 1.0.0 1.0.0 100 2.1.0 [int should be 10000] - * 1.0.1 1.0.1 10001 2.1.0 - * 1.0.1a-e 1.0.1a-e 10002 2.1.0.1a-e - * 1.0.2 1.0.2 10002 2.1.0.2 - * 1.0.2a-c 1.0.2a 10003 2.1.0.2a-c - * 1.0.3 1.0.3 10003 2.1.0.3 + * source png.h png.h shared-lib + * version string int version + * ------- ------ ----- ---------- + * 0.89c "1.0 beta 3" 0.89 89 1.0.89 + * 0.90 "1.0 beta 4" 0.90 90 0.90 [should have been 2.0.90] + * 0.95 "1.0 beta 5" 0.95 95 0.95 [should have been 2.0.95] + * 0.96 "1.0 beta 6" 0.96 96 0.96 [should have been 2.0.96] + * 0.97b "1.00.97 beta 7" 1.00.97 97 1.0.1 [should have been 2.0.97] + * 0.97c 0.97 97 2.0.97 + * 0.98 0.98 98 2.0.98 + * 0.99 0.99 98 2.0.99 + * 0.99a-m 0.99 99 2.0.99 + * 1.00 1.00 100 2.1.0 [100 should be 10000] + * 1.0.0 (from here on, the 100 2.1.0 [100 should be 10000] + * 1.0.1 png.h string is 10001 2.1.0 + * 1.0.1a-e identical to the 10002 from here on, the shared library + * 1.0.2 source version) 10002 is 2.V where V is the source code + * 1.0.2a-b 10003 version, except as noted. + * 1.0.3 10003 + * 1.0.3a-d 10004 + * 1.0.4 10004 + * 1.0.4a-f 10005 + * 1.0.5 (+ 2 patches) 10005 + * 1.0.5a-d 10006 + * 1.0.5e-r 10100 (not source compatible) + * 1.0.5s-v 10006 (not binary compatible) + * 1.0.6 (+ 3 patches) 10006 (still binary incompatible) + * 1.0.6d-f 10007 (still binary incompatible) + * 1.0.6g 10007 + * 1.0.6h 10007 10.6h (testing xy.z so-numbering) + * 1.0.6i 10007 10.6i + * 1.0.6j 10007 2.1.0.6j (incompatible with 1.0.0) + * 1.0.7beta11-14 DLLNUM 10007 2.1.0.7beta11-14 (binary compatible) + * 1.0.7beta15-18 1 10007 2.1.0.7beta15-18 (binary compatible) + * 1.0.7rc1-2 1 10007 2.1.0.7rc1-2 (binary compatible) + * 1.0.7 1 10007 (still compatible) + * 1.0.8beta1-4 1 10008 2.1.0.8beta1-4 + * 1.0.8rc1 1 10008 2.1.0.8rc1 + * 1.0.8 1 10008 2.1.0.8 + * 1.0.9beta1-6 1 10009 2.1.0.9beta1-6 + * 1.0.9rc1 1 10009 2.1.0.9rc1 + * 1.0.9beta7-10 1 10009 2.1.0.9beta7-10 + * 1.0.9rc2 1 10009 2.1.0.9rc2 + * 1.0.9 1 10009 2.1.0.9 + * 1.0.10beta1 1 10010 2.1.0.10beta1 + * 1.0.10rc1 1 10010 2.1.0.10rc1 + * 1.0.10 1 10010 2.1.0.10 + * 1.0.11beta1-3 1 10011 2.1.0.11beta1-3 + * 1.0.11rc1 1 10011 2.1.0.11rc1 + * 1.0.11 1 10011 2.1.0.11 + * 1.0.12beta1-2 2 10012 2.1.0.12beta1-2 + * 1.0.12rc1 2 10012 2.1.0.12rc1 + * 1.0.12 2 10012 2.1.0.12 + * 1.1.0a-f - 10100 2.1.1.0a-f (branch abandoned) + * 1.2.0beta1-2 2 10200 2.1.2.0beta1-2 + * 1.2.0beta3-5 3 10200 3.1.2.0beta3-5 + * 1.2.0rc1 3 10200 3.1.2.0rc1 + * 1.2.0 3 10200 3.1.2.0 + * 1.2.1beta1-4 3 10201 3.1.2.1beta1-4 + * 1.2.1rc1-2 3 10201 3.1.2.1rc1-2 + * 1.2.1 3 10201 3.1.2.1 + * 1.2.2beta1-6 12 10202 12.so.0.1.2.2beta1-6 + * 1.0.13beta1 10 10013 10.so.0.1.0.13beta1 + * 1.0.13rc1 10 10013 10.so.0.1.0.13rc1 + * 1.2.2rc1 12 10202 12.so.0.1.2.2rc1 + * 1.0.13 10 10013 10.so.0.1.0.13 + * 1.2.2 12 10202 12.so.0.1.2.2 + * 1.2.3rc1-6 12 10203 12.so.0.1.2.3rc1-6 + * 1.2.3 12 10203 12.so.0.1.2.3 + * 1.2.4beta1-3 13 10204 12.so.0.1.2.4beta1-3 + * 1.0.14rc1 13 10014 10.so.0.1.0.14rc1 + * 1.2.4rc1 13 10204 12.so.0.1.2.4rc1 + * 1.0.14 10 10014 10.so.0.1.0.14 + * 1.2.4 13 10204 12.so.0.1.2.4 + * 1.2.5beta1-2 13 10205 12.so.0.1.2.5beta1-2 + * 1.0.15rc1-3 10 10015 10.so.0.1.0.15rc1-3 + * 1.2.5rc1-3 13 10205 12.so.0.1.2.5rc1-3 + * 1.0.15 10 10015 10.so.0.1.0.15 + * 1.2.5 13 10205 12.so.0.1.2.5 + * 1.2.6beta1-4 13 10206 12.so.0.1.2.6beta1-4 + * 1.0.16 10 10016 10.so.0.1.0.16 + * 1.2.6 13 10206 12.so.0.1.2.6 + * 1.2.7beta1-2 13 10207 12.so.0.1.2.7beta1-2 + * 1.0.17rc1 10 10017 12.so.0.1.0.17rc1 + * 1.2.7rc1 13 10207 12.so.0.1.2.7rc1 + * 1.0.17 10 10017 12.so.0.1.0.17 + * 1.2.7 13 10207 12.so.0.1.2.7 * - * Henceforth the source version will match the shared-library minor - * and patch numbers; the shared-library major version number will be + * Henceforth the source version will match the shared-library major + * and minor numbers; the shared-library major version number will be * used for changes in backward compatibility, as it is intended. The - * PNG_PNGLIB_VER macro, which is not used within libpng but is available + * PNG_LIBPNG_VER macro, which is not used within libpng but is available * for applications, is an unsigned integer of the form xyyzz corresponding - * to the source version x.y.z (leading zeros in y and z). + * to the source version x.y.z (leading zeros in y and z). Beta versions + * were given the previous public release number plus a letter, until + * version 1.0.6j; from then on they were given the upcoming public + * release number plus "betaNN" or "rcN". + * + * Binary incompatibility exists only when applications make direct access + * to the info_ptr or png_ptr members through png.h, and the compiled + * application is loaded with a different version of the library. + * + * DLLNUM will change each time there are forward or backward changes + * in binary compatibility (e.g., when a new feature is added). * * See libpng.txt or libpng.3 for more information. The PNG specification - * is available as RFC 2083 - * and as a W3C Recommendation + * is available as a W3C Recommendation and as an ISO Specification, + * magic bytes. * Handling more than 8 bytes from the beginning of the file is an error. */ @@ -790,6 +1357,20 @@ extern PNG_EXPORT(png_structp,png_create_write_struct) PNGARG((png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warn_fn)); +#ifdef PNG_WRITE_SUPPORTED +extern PNG_EXPORT(png_uint_32,png_get_compression_buffer_size) + PNGARG((png_structp png_ptr)); +#endif + +#ifdef PNG_WRITE_SUPPORTED +extern PNG_EXPORT(void,png_set_compression_buffer_size) + PNGARG((png_structp png_ptr, png_uint_32 size)); +#endif + +/* Reset the compression stream */ +extern PNG_EXPORT(int,png_reset_zstream) PNGARG((png_structp png_ptr)); + +/* New functions added in libpng-1.0.2 (not enabled by default until 1.2.0) */ #ifdef PNG_USER_MEM_SUPPORTED extern PNG_EXPORT(png_structp,png_create_read_struct_2) PNGARG((png_const_charp user_png_ver, png_voidp error_ptr, @@ -820,22 +1401,33 @@ extern PNG_EXPORT(void,png_write_chunk_end) PNGARG((png_structp png_ptr)); extern PNG_EXPORT(png_infop,png_create_info_struct) PNGARG((png_structp png_ptr)); -/* Initialize the info structure (old interface - NOT DLL EXPORTED) */ -extern void png_info_init PNGARG((png_infop info_ptr)); +/* Initialize the info structure (old interface - DEPRECATED) */ +extern PNG_EXPORT(void,png_info_init) PNGARG((png_infop info_ptr)); +#undef png_info_init +#define png_info_init(info_ptr) png_info_init_3(&info_ptr,\ + png_sizeof(png_info)); +extern PNG_EXPORT(void,png_info_init_3) PNGARG((png_infopp info_ptr, + png_size_t png_info_struct_size)); /* Writes all the PNG information before the image. */ +extern PNG_EXPORT(void,png_write_info_before_PLTE) PNGARG((png_structp png_ptr, + png_infop info_ptr)); extern PNG_EXPORT(void,png_write_info) PNGARG((png_structp png_ptr, png_infop info_ptr)); +#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED /* read the information before the actual image data. */ extern PNG_EXPORT(void,png_read_info) PNGARG((png_structp png_ptr, png_infop info_ptr)); +#endif #if defined(PNG_TIME_RFC1123_SUPPORTED) extern PNG_EXPORT(png_charp,png_convert_to_rfc1123) PNGARG((png_structp png_ptr, png_timep ptime)); -#endif /* PNG_TIME_RFC1123_SUPPORTED */ +#endif +#if !defined(_WIN32_WCE) +/* "time.h" functions are not supported on WindowsCE */ #if defined(PNG_WRITE_tIME_SUPPORTED) /* convert from a struct tm to png_time */ extern PNG_EXPORT(void,png_convert_from_struct_tm) PNGARG((png_timep ptime, @@ -845,125 +1437,148 @@ extern PNG_EXPORT(void,png_convert_from_struct_tm) PNGARG((png_timep ptime, extern PNG_EXPORT(void,png_convert_from_time_t) PNGARG((png_timep ptime, time_t ttime)); #endif /* PNG_WRITE_tIME_SUPPORTED */ +#endif /* _WIN32_WCE */ #if defined(PNG_READ_EXPAND_SUPPORTED) -/* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha if available. */ +/* Expand data to 24-bit RGB, or 8-bit grayscale, with alpha if available. */ extern PNG_EXPORT(void,png_set_expand) PNGARG((png_structp png_ptr)); -#endif /* PNG_READ_EXPAND_SUPPORTED */ +extern PNG_EXPORT(void,png_set_gray_1_2_4_to_8) PNGARG((png_structp png_ptr)); +extern PNG_EXPORT(void,png_set_palette_to_rgb) PNGARG((png_structp png_ptr)); +extern PNG_EXPORT(void,png_set_tRNS_to_alpha) PNGARG((png_structp png_ptr)); +#endif #if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED) /* Use blue, green, red order for pixels. */ extern PNG_EXPORT(void,png_set_bgr) PNGARG((png_structp png_ptr)); -#endif /* PNG_READ_BGR_SUPPORTED || PNG_WRITE_BGR_SUPPORTED */ +#endif #if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED) -/* Expand the grayscale to 24 bit RGB if necessary. */ +/* Expand the grayscale to 24-bit RGB if necessary. */ extern PNG_EXPORT(void,png_set_gray_to_rgb) PNGARG((png_structp png_ptr)); -#endif /* PNG_READ_GRAY_TO_RGB_SUPPORTED */ +#endif #if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED) /* Reduce RGB to grayscale. */ +#ifdef PNG_FLOATING_POINT_SUPPORTED extern PNG_EXPORT(void,png_set_rgb_to_gray) PNGARG((png_structp png_ptr, - int error_action, float red, float green )); + int error_action, double red, double green )); +#endif +extern PNG_EXPORT(void,png_set_rgb_to_gray_fixed) PNGARG((png_structp png_ptr, + int error_action, png_fixed_point red, png_fixed_point green )); extern PNG_EXPORT(png_byte,png_get_rgb_to_gray_status) PNGARG((png_structp png_ptr)); -#endif /* PNG_READ_RGB_TO_GRAY_SUPPORTED */ +#endif extern PNG_EXPORT(void,png_build_grayscale_palette) PNGARG((int bit_depth, png_colorp palette)); #if defined(PNG_READ_STRIP_ALPHA_SUPPORTED) extern PNG_EXPORT(void,png_set_strip_alpha) PNGARG((png_structp png_ptr)); -#endif /* PNG_READ_STRIP_ALPHA_SUPPORTED */ +#endif #if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) || \ defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED) extern PNG_EXPORT(void,png_set_swap_alpha) PNGARG((png_structp png_ptr)); -#endif /* PNG_READ_SWAP_ALPHA_SUPPORTED || PNG_WRITE_SWAP_ALPHA_SUPPORTED */ +#endif #if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) || \ defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED) extern PNG_EXPORT(void,png_set_invert_alpha) PNGARG((png_structp png_ptr)); -#endif /* PNG_READ_INVERT_ALPHA_SUPPORTED || PNG_WRITE_INVERT_ALPHA_SUPPORTED */ +#endif #if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED) -/* Add a filler byte to 24-bit RGB images. */ +/* Add a filler byte to 8-bit Gray or 24-bit RGB images. */ extern PNG_EXPORT(void,png_set_filler) PNGARG((png_structp png_ptr, png_uint_32 filler, int flags)); - /* The values of the PNG_FILLER_ defines should NOT be changed */ #define PNG_FILLER_BEFORE 0 #define PNG_FILLER_AFTER 1 +/* Add an alpha byte to 8-bit Gray or 24-bit RGB images. */ +#if !defined(PNG_1_0_X) +extern PNG_EXPORT(void,png_set_add_alpha) PNGARG((png_structp png_ptr, + png_uint_32 filler, int flags)); +#endif #endif /* PNG_READ_FILLER_SUPPORTED || PNG_WRITE_FILLER_SUPPORTED */ #if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) -/* Swap bytes in 16 bit depth files. */ +/* Swap bytes in 16-bit depth files. */ extern PNG_EXPORT(void,png_set_swap) PNGARG((png_structp png_ptr)); -#endif /* PNG_READ_SWAP_SUPPORTED || PNG_WRITE_SWAP_SUPPORTED */ +#endif #if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED) -/* Use 1 byte per pixel in 1, 2, or 4 bit depth files. */ +/* Use 1 byte per pixel in 1, 2, or 4-bit depth files. */ extern PNG_EXPORT(void,png_set_packing) PNGARG((png_structp png_ptr)); -#endif /* PNG_READ_PACK_SUPPORTED || PNG_WRITE_PACK_SUPPORTED */ +#endif #if defined(PNG_READ_PACKSWAP_SUPPORTED) || defined(PNG_WRITE_PACKSWAP_SUPPORTED) /* Swap packing order of pixels in bytes. */ extern PNG_EXPORT(void,png_set_packswap) PNGARG((png_structp png_ptr)); -#endif /* PNG_READ_PACKSWAP_SUPPORTED || PNG_WRITE_PACKSWAP_SUPPOR */ +#endif #if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED) /* Converts files to legal bit depths. */ extern PNG_EXPORT(void,png_set_shift) PNGARG((png_structp png_ptr, png_color_8p true_bits)); -#endif /* PNG_READ_SHIFT_SUPPORTED || PNG_WRITE_SHIFT_SUPPORTED */ +#endif #if defined(PNG_READ_INTERLACING_SUPPORTED) || \ defined(PNG_WRITE_INTERLACING_SUPPORTED) /* Have the code handle the interlacing. Returns the number of passes. */ extern PNG_EXPORT(int,png_set_interlace_handling) PNGARG((png_structp png_ptr)); -#endif /* PNG_READ_INTERLACING_SUPPORTED || PNG_WRITE_INTERLACING_SUPPORTED */ +#endif #if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED) -/* Invert monocrome files */ +/* Invert monochrome files */ extern PNG_EXPORT(void,png_set_invert_mono) PNGARG((png_structp png_ptr)); -#endif /* PNG_READ_INVERT_SUPPORTED || PNG_WRITE_INVERT_SUPPORTED */ +#endif #if defined(PNG_READ_BACKGROUND_SUPPORTED) /* Handle alpha and tRNS by replacing with a background color. */ +#ifdef PNG_FLOATING_POINT_SUPPORTED extern PNG_EXPORT(void,png_set_background) PNGARG((png_structp png_ptr, png_color_16p background_color, int background_gamma_code, int need_expand, double background_gamma)); +#endif #define PNG_BACKGROUND_GAMMA_UNKNOWN 0 #define PNG_BACKGROUND_GAMMA_SCREEN 1 #define PNG_BACKGROUND_GAMMA_FILE 2 #define PNG_BACKGROUND_GAMMA_UNIQUE 3 -#endif /* PNG_READ_BACKGROUND_SUPPORTED */ +#endif #if defined(PNG_READ_16_TO_8_SUPPORTED) -/* strip the second byte of information from a 16 bit depth file. */ +/* strip the second byte of information from a 16-bit depth file. */ extern PNG_EXPORT(void,png_set_strip_16) PNGARG((png_structp png_ptr)); -#endif /* PNG_READ_16_TO_8_SUPPORTED */ +#endif #if defined(PNG_READ_DITHER_SUPPORTED) /* Turn on dithering, and reduce the palette to the number of colors available. */ extern PNG_EXPORT(void,png_set_dither) PNGARG((png_structp png_ptr, png_colorp palette, int num_palette, int maximum_colors, png_uint_16p histogram, int full_dither)); -#endif /* PNG_READ_DITHER_SUPPORTED */ +#endif #if defined(PNG_READ_GAMMA_SUPPORTED) -/* Handle gamma correction. Screen_gamma=(display_gamma/viewing_gamma) */ +/* Handle gamma correction. Screen_gamma=(display_exponent) */ +#ifdef PNG_FLOATING_POINT_SUPPORTED extern PNG_EXPORT(void,png_set_gamma) PNGARG((png_structp png_ptr, double screen_gamma, double default_file_gamma)); -#endif /* PNG_READ_GAMMA_SUPPORTED */ +#endif +#endif + +#if defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \ + defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED) +/* Permit or disallow empty PLTE (0: not permitted, 1: permitted) */ +/* Deprecated and will be removed. Use png_permit_mng_features() instead. */ +extern PNG_EXPORT(void,png_permit_empty_plte) PNGARG((png_structp png_ptr, + int empty_plte_permitted)); +#endif #if defined(PNG_WRITE_FLUSH_SUPPORTED) /* Set how many lines between output flushes - 0 for no flushing */ extern PNG_EXPORT(void,png_set_flush) PNGARG((png_structp png_ptr, int nrows)); - /* Flush the current PNG output buffer */ extern PNG_EXPORT(void,png_write_flush) PNGARG((png_structp png_ptr)); -#endif /* PNG_WRITE_FLUSH_SUPPORTED */ +#endif /* optional update palette with requested transformations */ extern PNG_EXPORT(void,png_start_read_image) PNGARG((png_structp png_ptr)); @@ -972,18 +1587,24 @@ extern PNG_EXPORT(void,png_start_read_image) PNGARG((png_structp png_ptr)); extern PNG_EXPORT(void,png_read_update_info) PNGARG((png_structp png_ptr, png_infop info_ptr)); -/* read a one or more rows of image data.*/ +#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED +/* read one or more rows of image data. */ extern PNG_EXPORT(void,png_read_rows) PNGARG((png_structp png_ptr, png_bytepp row, png_bytepp display_row, png_uint_32 num_rows)); +#endif -/* read a row of data.*/ +#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED +/* read a row of data. */ extern PNG_EXPORT(void,png_read_row) PNGARG((png_structp png_ptr, png_bytep row, png_bytep display_row)); +#endif +#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED /* read the whole image into memory at once. */ extern PNG_EXPORT(void,png_read_image) PNGARG((png_structp png_ptr, png_bytepp image)); +#endif /* write a row of image data */ extern PNG_EXPORT(void,png_write_row) PNGARG((png_structp png_ptr, @@ -1001,9 +1622,11 @@ extern PNG_EXPORT(void,png_write_image) PNGARG((png_structp png_ptr, extern PNG_EXPORT(void,png_write_end) PNGARG((png_structp png_ptr, png_infop info_ptr)); +#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED /* read the end of the PNG file. */ extern PNG_EXPORT(void,png_read_end) PNGARG((png_structp png_ptr, png_infop info_ptr)); +#endif /* free any memory associated with the png_info_struct */ extern PNG_EXPORT(void,png_destroy_info_struct) PNGARG((png_structp png_ptr, @@ -1021,9 +1644,6 @@ extern void png_read_destroy PNGARG((png_structp png_ptr, png_infop info_ptr, extern PNG_EXPORT(void,png_destroy_write_struct) PNGARG((png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)); -/* free any memory used in info_ptr struct (old method - NOT DLL EXPORTED) */ -extern void png_write_destroy_info PNGARG((png_infop info_ptr)); - /* free any memory used in png_ptr struct (old method - NOT DLL EXPORTED) */ extern void png_write_destroy PNGARG((png_structp png_ptr)); @@ -1114,9 +1734,11 @@ extern PNG_EXPORT(void,png_set_filter) PNGARG((png_structp png_ptr, int method, * the weights and costs are set to 1.0, this degenerates the WEIGHTED method * to the UNWEIGHTED method, but with added encoding time/computation. */ +#ifdef PNG_FLOATING_POINT_SUPPORTED extern PNG_EXPORT(void,png_set_filter_heuristics) PNGARG((png_structp png_ptr, int heuristic_method, int num_weights, png_doublep filter_weights, png_doublep filter_costs)); +#endif #endif /* PNG_WRITE_WEIGHTED_FILTER_SUPPORTED */ /* Heuristic used for row filter selection. These defines should NOT be @@ -1160,7 +1782,7 @@ extern PNG_EXPORT(void,png_set_compression_method) PNGARG((png_structp png_ptr, #if !defined(PNG_NO_STDIO) /* Initialize the input/output for the PNG file to the default functions. */ -extern PNG_EXPORT(void,png_init_io) PNGARG((png_structp png_ptr, FILE *fp)); +extern PNG_EXPORT(void,png_init_io) PNGARG((png_structp png_ptr, png_FILE_p fp)); #endif /* Replace the (error and abort), and warning functions with user @@ -1202,21 +1824,40 @@ extern PNG_EXPORT(void,png_set_write_status_fn) PNGARG((png_structp png_ptr, /* Replace the default memory allocation functions with user supplied one(s). */ extern PNG_EXPORT(void,png_set_mem_fn) PNGARG((png_structp png_ptr, png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn)); - /* Return the user pointer associated with the memory functions */ extern PNG_EXPORT(png_voidp,png_get_mem_ptr) PNGARG((png_structp png_ptr)); -#endif /* PNG_USER_MEM_SUPPORTED */ +#endif -#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED +#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ + defined(PNG_LEGACY_SUPPORTED) extern PNG_EXPORT(void,png_set_read_user_transform_fn) PNGARG((png_structp png_ptr, png_user_transform_ptr read_user_transform_fn)); #endif -#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED +#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \ + defined(PNG_LEGACY_SUPPORTED) extern PNG_EXPORT(void,png_set_write_user_transform_fn) PNGARG((png_structp png_ptr, png_user_transform_ptr write_user_transform_fn)); #endif +#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ + defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \ + defined(PNG_LEGACY_SUPPORTED) +extern PNG_EXPORT(void,png_set_user_transform_info) PNGARG((png_structp + png_ptr, png_voidp user_transform_ptr, int user_transform_depth, + int user_transform_channels)); +/* Return the user pointer associated with the user transform functions */ +extern PNG_EXPORT(png_voidp,png_get_user_transform_ptr) + PNGARG((png_structp png_ptr)); +#endif + +#ifdef PNG_USER_CHUNKS_SUPPORTED +extern PNG_EXPORT(void,png_set_read_user_chunk_fn) PNGARG((png_structp png_ptr, + png_voidp user_chunk_ptr, png_user_chunk_ptr read_user_chunk_fn)); +extern PNG_EXPORT(png_voidp,png_get_user_chunk_ptr) PNGARG((png_structp + png_ptr)); +#endif + #ifdef PNG_PROGRESSIVE_READ_SUPPORTED /* Sets the function callbacks for the push reader, and a pointer to a * user-defined structure available to the callback functions. @@ -1244,15 +1885,60 @@ extern PNG_EXPORT(void,png_progressive_combine_row) PNGARG((png_structp png_ptr, extern PNG_EXPORT(png_voidp,png_malloc) PNGARG((png_structp png_ptr, png_uint_32 size)); +#if defined(PNG_1_0_X) +# define png_malloc_warn png_malloc +#else +/* Added at libpng version 1.2.4 */ +extern PNG_EXPORT(png_voidp,png_malloc_warn) PNGARG((png_structp png_ptr, + png_uint_32 size)); +#endif + /* frees a pointer allocated by png_malloc() */ extern PNG_EXPORT(void,png_free) PNGARG((png_structp png_ptr, png_voidp ptr)); +#if defined(PNG_1_0_X) +/* Function to allocate memory for zlib. */ +extern PNG_EXPORT(voidpf,png_zalloc) PNGARG((voidpf png_ptr, uInt items, + uInt size)); + +/* Function to free memory for zlib */ +extern PNG_EXPORT(void,png_zfree) PNGARG((voidpf png_ptr, voidpf ptr)); +#endif + +/* Free data that was allocated internally */ +extern PNG_EXPORT(void,png_free_data) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_uint_32 free_me, int num)); +#ifdef PNG_FREE_ME_SUPPORTED +/* Reassign responsibility for freeing existing data, whether allocated + * by libpng or by the application */ +extern PNG_EXPORT(void,png_data_freer) PNGARG((png_structp png_ptr, + png_infop info_ptr, int freer, png_uint_32 mask)); +#endif +/* assignments for png_data_freer */ +#define PNG_DESTROY_WILL_FREE_DATA 1 +#define PNG_SET_WILL_FREE_DATA 1 +#define PNG_USER_WILL_FREE_DATA 2 +/* Flags for png_ptr->free_me and info_ptr->free_me */ +#define PNG_FREE_HIST 0x0008 +#define PNG_FREE_ICCP 0x0010 +#define PNG_FREE_SPLT 0x0020 +#define PNG_FREE_ROWS 0x0040 +#define PNG_FREE_PCAL 0x0080 +#define PNG_FREE_SCAL 0x0100 +#define PNG_FREE_UNKN 0x0200 +#define PNG_FREE_LIST 0x0400 +#define PNG_FREE_PLTE 0x1000 +#define PNG_FREE_TRNS 0x2000 +#define PNG_FREE_TEXT 0x4000 +#define PNG_FREE_ALL 0x7fff +#define PNG_FREE_MUL 0x4220 /* PNG_FREE_SPLT|PNG_FREE_TEXT|PNG_FREE_UNKN */ + #ifdef PNG_USER_MEM_SUPPORTED extern PNG_EXPORT(png_voidp,png_malloc_default) PNGARG((png_structp png_ptr, png_uint_32 size)); extern PNG_EXPORT(void,png_free_default) PNGARG((png_structp png_ptr, png_voidp ptr)); -#endif /* PNG_USER_MEM_SUPPORTED */ +#endif extern PNG_EXPORT(png_voidp,png_memcpy_check) PNGARG((png_structp png_ptr, png_voidp s1, png_voidp s2, png_uint_32 size)); @@ -1267,19 +1953,19 @@ extern void *png_far_to_near PNGARG((png_structp png_ptr,png_voidp ptr, /* Fatal error in PNG image of libpng - can't continue */ extern PNG_EXPORT(void,png_error) PNGARG((png_structp png_ptr, - png_const_charp error)); + png_const_charp error_message)); /* The same, but the chunk name is prepended to the error string. */ extern PNG_EXPORT(void,png_chunk_error) PNGARG((png_structp png_ptr, - png_const_charp error)); + png_const_charp error_message)); /* Non-fatal error in libpng. Can continue, but may have a problem. */ extern PNG_EXPORT(void,png_warning) PNGARG((png_structp png_ptr, - png_const_charp message)); + png_const_charp warning_message)); /* Non-fatal error in libpng, chunk name is prepended to message. */ extern PNG_EXPORT(void,png_chunk_warning) PNGARG((png_structp png_ptr, - png_const_charp message)); + png_const_charp warning_message)); /* The png_set_ functions are for storing values in the png_info_struct. * Similarly, the png_get_ calls are used to read values from the @@ -1301,6 +1987,17 @@ png_infop info_ptr, png_uint_32 flag)); extern PNG_EXPORT(png_uint_32,png_get_rowbytes) PNGARG((png_structp png_ptr, png_infop info_ptr)); +#if defined(PNG_INFO_IMAGE_SUPPORTED) +/* Returns row_pointers, which is an array of pointers to scanlines that was +returned from png_read_png(). */ +extern PNG_EXPORT(png_bytepp,png_get_rows) PNGARG((png_structp png_ptr, +png_infop info_ptr)); +/* Set row_pointers, which is an array of pointers to scanlines for use +by png_write_png(). */ +extern PNG_EXPORT(void,png_set_rows) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_bytepp row_pointers)); +#endif + /* Returns number of color channels in image. */ extern PNG_EXPORT(png_byte,png_get_channels) PNGARG((png_structp png_ptr, png_infop info_ptr)); @@ -1343,17 +2040,19 @@ extern PNG_EXPORT(png_uint_32, png_get_y_pixels_per_meter) PNGARG((png_structp png_ptr, png_infop info_ptr)); /* Returns pixel aspect ratio, computed from pHYs chunk data. */ +#ifdef PNG_FLOATING_POINT_SUPPORTED extern PNG_EXPORT(float, png_get_pixel_aspect_ratio) PNGARG((png_structp png_ptr, png_infop info_ptr)); +#endif /* Returns image x, y offset in pixels or microns, from oFFs chunk data. */ -extern PNG_EXPORT(png_uint_32, png_get_x_offset_pixels) PNGARG((png_structp +extern PNG_EXPORT(png_int_32, png_get_x_offset_pixels) PNGARG((png_structp png_ptr, png_infop info_ptr)); -extern PNG_EXPORT(png_uint_32, png_get_y_offset_pixels) PNGARG((png_structp +extern PNG_EXPORT(png_int_32, png_get_y_offset_pixels) PNGARG((png_structp png_ptr, png_infop info_ptr)); -extern PNG_EXPORT(png_uint_32, png_get_x_offset_microns) PNGARG((png_structp +extern PNG_EXPORT(png_int_32, png_get_x_offset_microns) PNGARG((png_structp png_ptr, png_infop info_ptr)); -extern PNG_EXPORT(png_uint_32, png_get_y_offset_microns) PNGARG((png_structp +extern PNG_EXPORT(png_int_32, png_get_y_offset_microns) PNGARG((png_structp png_ptr, png_infop info_ptr)); #endif /* PNG_EASY_ACCESS_SUPPORTED */ @@ -1362,91 +2061,118 @@ png_ptr, png_infop info_ptr)); extern PNG_EXPORT(png_bytep,png_get_signature) PNGARG((png_structp png_ptr, png_infop info_ptr)); -#if defined(PNG_READ_bKGD_SUPPORTED) +#if defined(PNG_bKGD_SUPPORTED) extern PNG_EXPORT(png_uint_32,png_get_bKGD) PNGARG((png_structp png_ptr, png_infop info_ptr, png_color_16p *background)); -#endif /* PNG_READ_bKGD_SUPPORTED */ +#endif -#if defined(PNG_READ_bKGD_SUPPORTED) || defined(PNG_WRITE_bKGD_SUPPORTED) +#if defined(PNG_bKGD_SUPPORTED) extern PNG_EXPORT(void,png_set_bKGD) PNGARG((png_structp png_ptr, png_infop info_ptr, png_color_16p background)); -#endif /* PNG_READ_bKGD_SUPPORTED || PNG_WRITE_bKGD_SUPPORTED */ +#endif -#if defined(PNG_READ_cHRM_SUPPORTED) +#if defined(PNG_cHRM_SUPPORTED) +#ifdef PNG_FLOATING_POINT_SUPPORTED extern PNG_EXPORT(png_uint_32,png_get_cHRM) PNGARG((png_structp png_ptr, png_infop info_ptr, double *white_x, double *white_y, double *red_x, double *red_y, double *green_x, double *green_y, double *blue_x, double *blue_y)); -#endif /* PNG_READ_cHRM_SUPPORTED */ +#endif +#ifdef PNG_FIXED_POINT_SUPPORTED +extern PNG_EXPORT(png_uint_32,png_get_cHRM_fixed) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_fixed_point *int_white_x, png_fixed_point + *int_white_y, png_fixed_point *int_red_x, png_fixed_point *int_red_y, + png_fixed_point *int_green_x, png_fixed_point *int_green_y, png_fixed_point + *int_blue_x, png_fixed_point *int_blue_y)); +#endif +#endif -#if defined(PNG_READ_cHRM_SUPPORTED) || defined(PNG_WRITE_cHRM_SUPPORTED) +#if defined(PNG_cHRM_SUPPORTED) +#ifdef PNG_FLOATING_POINT_SUPPORTED extern PNG_EXPORT(void,png_set_cHRM) PNGARG((png_structp png_ptr, png_infop info_ptr, double white_x, double white_y, double red_x, double red_y, double green_x, double green_y, double blue_x, double blue_y)); -#endif /* PNG_READ_cHRM_SUPPORTED || PNG_WRITE_cHRM_SUPPORTED */ +#endif +#ifdef PNG_FIXED_POINT_SUPPORTED +extern PNG_EXPORT(void,png_set_cHRM_fixed) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_fixed_point int_white_x, png_fixed_point int_white_y, + png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point + int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x, + png_fixed_point int_blue_y)); +#endif +#endif -#if defined(PNG_READ_gAMA_SUPPORTED) +#if defined(PNG_gAMA_SUPPORTED) +#ifdef PNG_FLOATING_POINT_SUPPORTED extern PNG_EXPORT(png_uint_32,png_get_gAMA) PNGARG((png_structp png_ptr, png_infop info_ptr, double *file_gamma)); -#endif /* PNG_READ_gAMA_SUPPORTED */ +#endif +extern PNG_EXPORT(png_uint_32,png_get_gAMA_fixed) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_fixed_point *int_file_gamma)); +#endif -#if defined(PNG_READ_gAMA_SUPPORTED) || defined(PNG_WRITE_gAMA_SUPPORTED) +#if defined(PNG_gAMA_SUPPORTED) +#ifdef PNG_FLOATING_POINT_SUPPORTED extern PNG_EXPORT(void,png_set_gAMA) PNGARG((png_structp png_ptr, png_infop info_ptr, double file_gamma)); -#endif /* PNG_READ_gAMA_SUPPORTED || PNG_WRITE_gAMA_SUPPORTED */ +#endif +extern PNG_EXPORT(void,png_set_gAMA_fixed) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_fixed_point int_file_gamma)); +#endif -#if defined(PNG_READ_hIST_SUPPORTED) +#if defined(PNG_hIST_SUPPORTED) extern PNG_EXPORT(png_uint_32,png_get_hIST) PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_16p *hist)); -#endif /* PNG_READ_hIST_SUPPORTED */ +#endif -#if defined(PNG_READ_hIST_SUPPORTED) || defined(PNG_WRITE_hIST_SUPPORTED) +#if defined(PNG_hIST_SUPPORTED) extern PNG_EXPORT(void,png_set_hIST) PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)); -#endif /* PNG_READ_hIST_SUPPORTED || PNG_WRITE_hIST_SUPPORTED */ +#endif extern PNG_EXPORT(png_uint_32,png_get_IHDR) PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 *width, png_uint_32 *height, - int *bit_depth, int *color_type, int *interlace_type, - int *compression_type, int *filter_type)); + int *bit_depth, int *color_type, int *interlace_method, + int *compression_method, int *filter_method)); extern PNG_EXPORT(void,png_set_IHDR) PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 width, png_uint_32 height, int bit_depth, - int color_type, int interlace_type, int compression_type, int filter_type)); + int color_type, int interlace_method, int compression_method, + int filter_method)); -#if defined(PNG_READ_oFFs_SUPPORTED) +#if defined(PNG_oFFs_SUPPORTED) extern PNG_EXPORT(png_uint_32,png_get_oFFs) PNGARG((png_structp png_ptr, - png_infop info_ptr, png_uint_32 *offset_x, png_uint_32 *offset_y, + png_infop info_ptr, png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)); -#endif /* PNG_READ_oFFs_SUPPORTED */ +#endif -#if defined(PNG_READ_oFFs_SUPPORTED) || defined(PNG_WRITE_oFFs_SUPPORTED) +#if defined(PNG_oFFs_SUPPORTED) extern PNG_EXPORT(void,png_set_oFFs) PNGARG((png_structp png_ptr, - png_infop info_ptr, png_uint_32 offset_x, png_uint_32 offset_y, + png_infop info_ptr, png_int_32 offset_x, png_int_32 offset_y, int unit_type)); -#endif /* PNG_READ_oFFs_SUPPORTED || PNG_WRITE_oFFs_SUPPORTED */ +#endif -#if defined(PNG_READ_pCAL_SUPPORTED) +#if defined(PNG_pCAL_SUPPORTED) extern PNG_EXPORT(png_uint_32,png_get_pCAL) PNGARG((png_structp png_ptr, png_infop info_ptr, png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams, png_charp *units, png_charpp *params)); -#endif /* PNG_READ_pCAL_SUPPORTED */ +#endif -#if defined(PNG_READ_pCAL_SUPPORTED) || defined(PNG_WRITE_pCAL_SUPPORTED) +#if defined(PNG_pCAL_SUPPORTED) extern PNG_EXPORT(void,png_set_pCAL) PNGARG((png_structp png_ptr, png_infop info_ptr, png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams, png_charp units, png_charpp params)); -#endif /* PNG_READ_pCAL_SUPPORTED || PNG_WRITE_pCAL_SUPPORTED */ +#endif -#if defined(PNG_READ_pHYs_SUPPORTED) +#if defined(PNG_pHYs_SUPPORTED) extern PNG_EXPORT(png_uint_32,png_get_pHYs) PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)); -#endif /* PNG_READ_pHYs_SUPPORTED */ +#endif -#if defined(PNG_READ_pHYs_SUPPORTED) || defined(PNG_WRITE_pHYs_SUPPORTED) +#if defined(PNG_pHYs_SUPPORTED) extern PNG_EXPORT(void,png_set_pHYs) PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 res_x, png_uint_32 res_y, int unit_type)); -#endif /* PNG_READ_pHYs_SUPPORTED || PNG_WRITE_pHYs_SUPPORTED */ +#endif extern PNG_EXPORT(png_uint_32,png_get_PLTE) PNGARG((png_structp png_ptr, png_infop info_ptr, png_colorp *palette, int *num_palette)); @@ -1454,61 +2180,160 @@ extern PNG_EXPORT(png_uint_32,png_get_PLTE) PNGARG((png_structp png_ptr, extern PNG_EXPORT(void,png_set_PLTE) PNGARG((png_structp png_ptr, png_infop info_ptr, png_colorp palette, int num_palette)); -#if defined(PNG_READ_sBIT_SUPPORTED) +#if defined(PNG_sBIT_SUPPORTED) extern PNG_EXPORT(png_uint_32,png_get_sBIT) PNGARG((png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit)); -#endif /* PNG_READ_sBIT_SUPPORTED */ +#endif -#if defined(PNG_READ_sBIT_SUPPORTED) || defined(PNG_WRITE_sBIT_SUPPORTED) +#if defined(PNG_sBIT_SUPPORTED) extern PNG_EXPORT(void,png_set_sBIT) PNGARG((png_structp png_ptr, png_infop info_ptr, png_color_8p sig_bit)); -#endif /* PNG_READ_sBIT_SUPPORTED || PNG_WRITE_sBIT_SUPPORTED */ +#endif -#if defined(PNG_READ_sRGB_SUPPORTED) +#if defined(PNG_sRGB_SUPPORTED) extern PNG_EXPORT(png_uint_32,png_get_sRGB) PNGARG((png_structp png_ptr, png_infop info_ptr, int *intent)); -#endif /* PNG_READ_sRGB_SUPPORTED */ +#endif -#if defined(PNG_READ_sRGB_SUPPORTED) || defined(PNG_WRITE_sRGB_SUPPORTED) +#if defined(PNG_sRGB_SUPPORTED) extern PNG_EXPORT(void,png_set_sRGB) PNGARG((png_structp png_ptr, png_infop info_ptr, int intent)); extern PNG_EXPORT(void,png_set_sRGB_gAMA_and_cHRM) PNGARG((png_structp png_ptr, png_infop info_ptr, int intent)); -#endif /* PNG_READ_sRGB_SUPPORTED || PNG_WRITE_sRGB_SUPPORTED */ +#endif + +#if defined(PNG_iCCP_SUPPORTED) +extern PNG_EXPORT(png_uint_32,png_get_iCCP) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_charpp name, int *compression_type, + png_charpp profile, png_uint_32 *proflen)); + /* Note to maintainer: profile should be png_bytepp */ +#endif -#if defined(PNG_READ_tEXt_SUPPORTED) || defined(PNG_READ_zTXt_SUPPORTED) -/* png_get_text also returns the number of text chunks in text_ptr */ +#if defined(PNG_iCCP_SUPPORTED) +extern PNG_EXPORT(void,png_set_iCCP) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_charp name, int compression_type, + png_charp profile, png_uint_32 proflen)); + /* Note to maintainer: profile should be png_bytep */ +#endif + +#if defined(PNG_sPLT_SUPPORTED) +extern PNG_EXPORT(png_uint_32,png_get_sPLT) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_sPLT_tpp entries)); +#endif + +#if defined(PNG_sPLT_SUPPORTED) +extern PNG_EXPORT(void,png_set_sPLT) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_sPLT_tp entries, int nentries)); +#endif + +#if defined(PNG_TEXT_SUPPORTED) +/* png_get_text also returns the number of text chunks in *num_text */ extern PNG_EXPORT(png_uint_32,png_get_text) PNGARG((png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr, int *num_text)); -#endif /* PNG_READ_tEXt_SUPPORTED || PNG_READ_zTXt_SUPPORTED */ +#endif + +/* + * Note while png_set_text() will accept a structure whose text, + * language, and translated keywords are NULL pointers, the structure + * returned by png_get_text will always contain regular + * zero-terminated C strings. They might be empty strings but + * they will never be NULL pointers. + */ -#if defined(PNG_READ_tEXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \ - defined(PNG_READ_zTXt_SUPPORTED) || defined(PNG_WRITE_zTXt_SUPPORTED) +#if defined(PNG_TEXT_SUPPORTED) extern PNG_EXPORT(void,png_set_text) PNGARG((png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, int num_text)); -#endif /* PNG_READ_OR_WRITE_tEXt_OR_zTXt_SUPPORTED */ +#endif -#if defined(PNG_READ_tIME_SUPPORTED) +#if defined(PNG_tIME_SUPPORTED) extern PNG_EXPORT(png_uint_32,png_get_tIME) PNGARG((png_structp png_ptr, png_infop info_ptr, png_timep *mod_time)); -#endif /* PNG_READ_tIME_SUPPORTED */ +#endif -#if defined(PNG_READ_tIME_SUPPORTED) || defined(PNG_WRITE_tIME_SUPPORTED) +#if defined(PNG_tIME_SUPPORTED) extern PNG_EXPORT(void,png_set_tIME) PNGARG((png_structp png_ptr, png_infop info_ptr, png_timep mod_time)); -#endif /* PNG_READ_tIME_SUPPORTED || PNG_WRITE_tIME_SUPPORTED */ +#endif -#if defined(PNG_READ_tRNS_SUPPORTED) +#if defined(PNG_tRNS_SUPPORTED) extern PNG_EXPORT(png_uint_32,png_get_tRNS) PNGARG((png_structp png_ptr, png_infop info_ptr, png_bytep *trans, int *num_trans, png_color_16p *trans_values)); -#endif /* PNG_READ_tRNS_SUPPORTED */ +#endif -#if defined(PNG_READ_tRNS_SUPPORTED) || defined(PNG_WRITE_tRNS_SUPPORTED) +#if defined(PNG_tRNS_SUPPORTED) extern PNG_EXPORT(void,png_set_tRNS) PNGARG((png_structp png_ptr, png_infop info_ptr, png_bytep trans, int num_trans, png_color_16p trans_values)); -#endif /* PNG_READ_tRNS_SUPPORTED || PNG_WRITE_tRNS_SUPPORTED */ +#endif + +#if defined(PNG_tRNS_SUPPORTED) +#endif + +#if defined(PNG_sCAL_SUPPORTED) +#ifdef PNG_FLOATING_POINT_SUPPORTED +extern PNG_EXPORT(png_uint_32,png_get_sCAL) PNGARG((png_structp png_ptr, + png_infop info_ptr, int *unit, double *width, double *height)); +#else +#ifdef PNG_FIXED_POINT_SUPPORTED +extern PNG_EXPORT(png_uint_32,png_get_sCAL_s) PNGARG((png_structp png_ptr, + png_infop info_ptr, int *unit, png_charpp swidth, png_charpp sheight)); +#endif +#endif +#endif /* PNG_sCAL_SUPPORTED */ + +#if defined(PNG_sCAL_SUPPORTED) +#ifdef PNG_FLOATING_POINT_SUPPORTED +extern PNG_EXPORT(void,png_set_sCAL) PNGARG((png_structp png_ptr, + png_infop info_ptr, int unit, double width, double height)); +#endif +#ifdef PNG_FIXED_POINT_SUPPORTED +extern PNG_EXPORT(void,png_set_sCAL_s) PNGARG((png_structp png_ptr, + png_infop info_ptr, int unit, png_charp swidth, png_charp sheight)); +#endif +#endif /* PNG_sCAL_SUPPORTED || PNG_WRITE_sCAL_SUPPORTED */ + +#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) +/* provide a list of chunks and how they are to be handled, if the built-in + handling or default unknown chunk handling is not desired. Any chunks not + listed will be handled in the default manner. The IHDR and IEND chunks + must not be listed. + keep = 0: follow default behavour + = 1: do not keep + = 2: keep only if safe-to-copy + = 3: keep even if unsafe-to-copy +*/ +extern PNG_EXPORT(void, png_set_keep_unknown_chunks) PNGARG((png_structp + png_ptr, int keep, png_bytep chunk_list, int num_chunks)); +extern PNG_EXPORT(void, png_set_unknown_chunks) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns)); +extern PNG_EXPORT(void, png_set_unknown_chunk_location) + PNGARG((png_structp png_ptr, png_infop info_ptr, int chunk, int location)); +extern PNG_EXPORT(png_uint_32,png_get_unknown_chunks) PNGARG((png_structp + png_ptr, png_infop info_ptr, png_unknown_chunkpp entries)); +#endif +#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED +PNG_EXPORT(int,png_handle_as_unknown) PNGARG((png_structp png_ptr, png_bytep + chunk_name)); +#endif + +/* Png_free_data() will turn off the "valid" flag for anything it frees. + If you need to turn it off for a chunk that your application has freed, + you can use png_set_invalid(png_ptr, info_ptr, PNG_INFO_CHNK); */ +extern PNG_EXPORT(void, png_set_invalid) PNGARG((png_structp png_ptr, + png_infop info_ptr, int mask)); + +#if defined(PNG_INFO_IMAGE_SUPPORTED) +/* The "params" pointer is currently not used and is for future expansion. */ +extern PNG_EXPORT(void, png_read_png) PNGARG((png_structp png_ptr, + png_infop info_ptr, + int transforms, + png_voidp params)); +extern PNG_EXPORT(void, png_write_png) PNGARG((png_structp png_ptr, + png_infop info_ptr, + int transforms, + png_voidp params)); +#endif /* Define PNG_DEBUG at compile time for debugging information. Higher * numbers for PNG_DEBUG mean more debugging information. This has @@ -1517,19 +2342,38 @@ extern PNG_EXPORT(void,png_set_tRNS) PNGARG((png_structp png_ptr, */ #ifdef PNG_DEBUG #if (PNG_DEBUG > 0) +#if !defined(PNG_DEBUG_FILE) && defined(_MSC_VER) +#include +#if (PNG_DEBUG > 1) +#define png_debug(l,m) _RPT0(_CRT_WARN,m) +#define png_debug1(l,m,p1) _RPT1(_CRT_WARN,m,p1) +#define png_debug2(l,m,p1,p2) _RPT2(_CRT_WARN,m,p1,p2) +#endif +#else /* PNG_DEBUG_FILE || !_MSC_VER */ #ifndef PNG_DEBUG_FILE #define PNG_DEBUG_FILE stderr #endif /* PNG_DEBUG_FILE */ - -#define png_debug(l,m) if (PNG_DEBUG > l) \ - fprintf(PNG_DEBUG_FILE,"%s"m,(l==1 ? "\t" : \ - (l==2 ? "\t\t":(l>2 ? "\t\t\t":"")))) -#define png_debug1(l,m,p1) if (PNG_DEBUG > l) \ - fprintf(PNG_DEBUG_FILE,"%s"m,(l==1 ? "\t" : \ - (l==2 ? "\t\t":(l>2 ? "\t\t\t":""))),p1) -#define png_debug2(l,m,p1,p2) if (PNG_DEBUG > l) \ - fprintf(PNG_DEBUG_FILE,"%s"m,(l==1 ? "\t" : \ - (l==2 ? "\t\t":(l>2 ? "\t\t\t":""))),p1,p2) +#if (PNG_DEBUG > 1) +#define png_debug(l,m) \ +{ \ + int num_tabs=l; \ + fprintf(PNG_DEBUG_FILE,"%s"m,(num_tabs==1 ? "\t" : \ + (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \ +} +#define png_debug1(l,m,p1) \ +{ \ + int num_tabs=l; \ + fprintf(PNG_DEBUG_FILE,"%s"m,(num_tabs==1 ? "\t" : \ + (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \ +} +#define png_debug2(l,m,p1,p2) \ +{ \ + int num_tabs=l; \ + fprintf(PNG_DEBUG_FILE,"%s"m,(num_tabs==1 ? "\t" : \ + (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \ +} +#endif /* (PNG_DEBUG > 1) */ +#endif /* _MSC_VER */ #endif /* (PNG_DEBUG > 0) */ #endif /* PNG_DEBUG */ #ifndef png_debug @@ -1542,20 +2386,110 @@ extern PNG_EXPORT(void,png_set_tRNS) PNGARG((png_structp png_ptr, #define png_debug2(l, m, p1, p2) #endif +extern PNG_EXPORT(png_bytep,png_sig_bytes) PNGARG((void)); + extern PNG_EXPORT(png_charp,png_get_copyright) PNGARG((png_structp png_ptr)); +extern PNG_EXPORT(png_charp,png_get_header_ver) PNGARG((png_structp png_ptr)); extern PNG_EXPORT(png_charp,png_get_header_version) PNGARG((png_structp png_ptr)); +extern PNG_EXPORT(png_charp,png_get_libpng_ver) PNGARG((png_structp png_ptr)); + +#ifdef PNG_MNG_FEATURES_SUPPORTED +extern PNG_EXPORT(png_uint_32,png_permit_mng_features) PNGARG((png_structp + png_ptr, png_uint_32 mng_features_permitted)); +#endif + +/* For use in png_set_keep_unknown, added to version 1.2.6 */ +#define PNG_HANDLE_CHUNK_AS_DEFAULT 0 +#define PNG_HANDLE_CHUNK_NEVER 1 +#define PNG_HANDLE_CHUNK_IF_SAFE 2 +#define PNG_HANDLE_CHUNK_ALWAYS 3 + +/* Added to version 1.2.0 */ +#if defined(PNG_ASSEMBLER_CODE_SUPPORTED) +#define PNG_ASM_FLAG_MMX_SUPPORT_COMPILED 0x01 /* not user-settable */ +#define PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU 0x02 /* not user-settable */ +#define PNG_ASM_FLAG_MMX_READ_COMBINE_ROW 0x04 +#define PNG_ASM_FLAG_MMX_READ_INTERLACE 0x08 +#define PNG_ASM_FLAG_MMX_READ_FILTER_SUB 0x10 +#define PNG_ASM_FLAG_MMX_READ_FILTER_UP 0x20 +#define PNG_ASM_FLAG_MMX_READ_FILTER_AVG 0x40 +#define PNG_ASM_FLAG_MMX_READ_FILTER_PAETH 0x80 +#define PNG_ASM_FLAGS_INITIALIZED 0x80000000 /* not user-settable */ + +#define PNG_MMX_READ_FLAGS ( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \ + | PNG_ASM_FLAG_MMX_READ_INTERLACE \ + | PNG_ASM_FLAG_MMX_READ_FILTER_SUB \ + | PNG_ASM_FLAG_MMX_READ_FILTER_UP \ + | PNG_ASM_FLAG_MMX_READ_FILTER_AVG \ + | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ) +#define PNG_MMX_WRITE_FLAGS ( 0 ) + +#define PNG_MMX_FLAGS ( PNG_ASM_FLAG_MMX_SUPPORT_COMPILED \ + | PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU \ + | PNG_MMX_READ_FLAGS \ + | PNG_MMX_WRITE_FLAGS ) + +#define PNG_SELECT_READ 1 +#define PNG_SELECT_WRITE 2 + +#if !defined(PNG_1_0_X) +/* pngget.c */ +extern PNG_EXPORT(png_uint_32,png_get_mmx_flagmask) + PNGARG((int flag_select, int *compilerID)); + +/* pngget.c */ +extern PNG_EXPORT(png_uint_32,png_get_asm_flagmask) + PNGARG((int flag_select)); + +/* pngget.c */ +extern PNG_EXPORT(png_uint_32,png_get_asm_flags) + PNGARG((png_structp png_ptr)); -#ifdef PNG_NO_EXTERN -/* this only gets included in png.c */ -png_charp -png_get_header_version(png_structp png_ptr) -{ - if(png_ptr == NULL) - /* silence compiler warning about unused png_ptr */ ; - return("\n libpng version 1.0.3 - January 14, 1999 (header)\n"); -} +/* pngget.c */ +extern PNG_EXPORT(png_byte,png_get_mmx_bitdepth_threshold) + PNGARG((png_structp png_ptr)); + +/* pngget.c */ +extern PNG_EXPORT(png_uint_32,png_get_mmx_rowbytes_threshold) + PNGARG((png_structp png_ptr)); + +/* pngset.c */ +extern PNG_EXPORT(void,png_set_asm_flags) + PNGARG((png_structp png_ptr, png_uint_32 asm_flags)); + +/* pngset.c */ +extern PNG_EXPORT(void,png_set_mmx_thresholds) + PNGARG((png_structp png_ptr, png_byte mmx_bitdepth_threshold, + png_uint_32 mmx_rowbytes_threshold)); + +#endif /* PNG_1_0_X */ +#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */ + +#if !defined(PNG_1_0_X) +/* png.c, pnggccrd.c, or pngvcrd.c */ +extern PNG_EXPORT(int,png_mmx_support) PNGARG((void)); + +/* Strip the prepended error numbers ("#nnn ") from error and warning + * messages before passing them to the error or warning handler. */ +#ifdef PNG_ERROR_NUMBERS_SUPPORTED +extern PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp + png_ptr, png_uint_32 strip_mode)); +#endif + +#endif /* PNG_1_0_X */ + +/* Added at libpng-1.2.6 */ +#ifdef PNG_SET_USER_LIMITS_SUPPORTED +extern PNG_EXPORT(void,png_set_user_limits) PNGARG((png_structp + png_ptr, png_uint_32 user_width_max, png_uint_32 user_height_max)); +extern PNG_EXPORT(png_uint_32,png_get_user_width_max) PNGARG((png_structp + png_ptr)); +extern PNG_EXPORT(png_uint_32,png_get_user_height_max) PNGARG((png_structp + png_ptr)); #endif +/* Maintainer: Put new public prototypes here ^, in libpng.3, and project defs */ + #ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED /* With these routines we avoid an integer divide, which will be slower on * most machines. However, it does take more operations than the corresponding @@ -1572,14 +2506,14 @@ png_get_header_version(png_structp png_ptr) /* fg and bg should be in `gamma 1.0' space; alpha is the opacity */ # define png_composite(composite, fg, alpha, bg) \ - { png_uint_16 temp = ((png_uint_16)(fg) * (png_uint_16)(alpha) + \ - (png_uint_16)(bg)*(png_uint_16)(255 - \ + { png_uint_16 temp = (png_uint_16)((png_uint_16)(fg) * (png_uint_16)(alpha) \ + + (png_uint_16)(bg)*(png_uint_16)(255 - \ (png_uint_16)(alpha)) + (png_uint_16)128); \ (composite) = (png_byte)((temp + (temp >> 8)) >> 8); } # define png_composite_16(composite, fg, alpha, bg) \ - { png_uint_32 temp = ((png_uint_32)(fg) * (png_uint_32)(alpha) + \ - (png_uint_32)(bg)*(png_uint_32)(65535L - \ + { png_uint_32 temp = (png_uint_32)((png_uint_32)(fg) * (png_uint_32)(alpha) \ + + (png_uint_32)(bg)*(png_uint_32)(65535L - \ (png_uint_32)(alpha)) + (png_uint_32)32768L); \ (composite) = (png_uint_16)((temp + (temp >> 16)) >> 16); } @@ -1608,25 +2542,19 @@ png_get_header_version(png_structp png_ptr) /* Various modes of operation. Note that after an init, mode is set to * zero automatically when the structure is created. */ -#define PNG_BEFORE_IHDR 0x00 -#define PNG_HAVE_IHDR 0x01 -#define PNG_HAVE_PLTE 0x02 -#define PNG_HAVE_IDAT 0x04 -#define PNG_AFTER_IDAT 0x08 -#define PNG_HAVE_IEND 0x10 -#define PNG_HAVE_gAMA 0x20 -#define PNG_HAVE_cHRM 0x40 -#define PNG_HAVE_sRGB 0x80 - -/* push model modes */ -#define PNG_READ_SIG_MODE 0 -#define PNG_READ_CHUNK_MODE 1 -#define PNG_READ_IDAT_MODE 2 -#define PNG_SKIP_MODE 3 -#define PNG_READ_tEXt_MODE 4 -#define PNG_READ_zTXt_MODE 5 -#define PNG_READ_DONE_MODE 6 -#define PNG_ERROR_MODE 7 +#define PNG_HAVE_IHDR 0x01 +#define PNG_HAVE_PLTE 0x02 +#define PNG_HAVE_IDAT 0x04 +#define PNG_AFTER_IDAT 0x08 +#define PNG_HAVE_IEND 0x10 +#define PNG_HAVE_gAMA 0x20 +#define PNG_HAVE_cHRM 0x40 +#define PNG_HAVE_sRGB 0x80 +#define PNG_HAVE_CHUNK_HEADER 0x100 +#define PNG_WROTE_tIME 0x200 +#define PNG_WROTE_INFO_BEFORE_PLTE 0x400 +#define PNG_BACKGROUND_IS_GRAY 0x800 +#define PNG_HAVE_PNG_SIGNATURE 0x1000 /* flags for the transformations the PNG library does on the image data */ #define PNG_BGR 0x0001 @@ -1644,7 +2572,7 @@ png_get_header_version(png_structp png_ptr) #define PNG_EXPAND 0x1000 #define PNG_GAMMA 0x2000 #define PNG_GRAY_TO_RGB 0x4000 -#define PNG_FILLER 0x8000 +#define PNG_FILLER 0x8000L #define PNG_PACKSWAP 0x10000L #define PNG_SWAP_ALPHA 0x20000L #define PNG_STRIP_ALPHA 0x40000L @@ -1653,6 +2581,7 @@ png_get_header_version(png_structp png_ptr) #define PNG_RGB_TO_GRAY_ERR 0x200000L #define PNG_RGB_TO_GRAY_WARN 0x400000L #define PNG_RGB_TO_GRAY 0x600000L /* two bits, RGB_TO_GRAY_ERR|WARN */ +#define PNG_ADD_ALPHA 0x1000000L /* Added to libpng-1.2.7 */ /* flags for png_create_struct */ #define PNG_STRUCT_PNG 0x0001 @@ -1677,12 +2606,15 @@ png_get_header_version(png_structp png_ptr) #define PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200 #define PNG_FLAG_CRC_CRITICAL_USE 0x0400 #define PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800 -#define PNG_FLAG_FREE_PALETTE 0x1000 -#define PNG_FLAG_FREE_TRANS 0x2000 +#define PNG_FLAG_FREE_PLTE 0x1000 +#define PNG_FLAG_FREE_TRNS 0x2000 #define PNG_FLAG_FREE_HIST 0x4000 -#define PNG_FLAG_HAVE_CHUNK_HEADER 0x8000L -#define PNG_FLAG_WROTE_tIME 0x10000L -#define PNG_FLAG_BACKGROUND_IS_GRAY 0x20000L +#define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000L +#define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000L +#define PNG_FLAG_LIBRARY_MISMATCH 0x20000L +#define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000L +#define PNG_FLAG_STRIP_ERROR_TEXT 0x80000L +#define PNG_FLAG_MALLOC_NULL_MEM_OK 0x100000L #define PNG_FLAG_CRC_ANCILLARY_MASK (PNG_FLAG_CRC_ANCILLARY_USE | \ PNG_FLAG_CRC_ANCILLARY_NOWARN) @@ -1694,39 +2626,84 @@ png_get_header_version(png_structp png_ptr) PNG_FLAG_CRC_CRITICAL_MASK) /* save typing and make code easier to understand */ + #define PNG_COLOR_DIST(c1, c2) (abs((int)((c1).red) - (int)((c2).red)) + \ abs((int)((c1).green) - (int)((c2).green)) + \ abs((int)((c1).blue) - (int)((c2).blue))) +/* Added to libpng-1.2.6 JB */ +#define PNG_ROWBYTES(pixel_bits, width) \ + ((pixel_bits) >= 8 ? \ + ((width) * (((png_uint_32)(pixel_bits)) >> 3)) : \ + (( ((width) * ((png_uint_32)(pixel_bits))) + 7) >> 3) ) + +/* PNG_OUT_OF_RANGE returns true if value is outside the range + ideal-delta..ideal+delta. Each argument is evaluated twice. + "ideal" and "delta" should be constants, normally simple + integers, "value" a variable. Added to libpng-1.2.6 JB */ +#define PNG_OUT_OF_RANGE(value, ideal, delta) \ + ( (value) < (ideal)-(delta) || (value) > (ideal)+(delta) ) + /* variables declared in png.c - only it needs to define PNG_NO_EXTERN */ #if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN) /* place to hold the signature string for a PNG file. */ -extern png_byte FARDATA png_sig[8]; +#ifdef PNG_USE_GLOBAL_ARRAYS + PNG_EXPORT_VAR (const png_byte FARDATA) png_sig[8]; +#else +#define png_sig png_sig_bytes(NULL) +#endif +#endif /* PNG_NO_EXTERN */ /* Constant strings for known chunk types. If you need to add a chunk, - * add a string holding the name here. See png.c for more details. We - * can't selectively include these, since we still check for chunk in the - * wrong locations with these labels. + * define the name here, and add an invocation of the macro in png.c and + * wherever it's needed. */ -extern png_byte FARDATA png_IHDR[5]; -extern png_byte FARDATA png_IDAT[5]; -extern png_byte FARDATA png_IEND[5]; -extern png_byte FARDATA png_PLTE[5]; -extern png_byte FARDATA png_bKGD[5]; -extern png_byte FARDATA png_cHRM[5]; -extern png_byte FARDATA png_gAMA[5]; -extern png_byte FARDATA png_hIST[5]; -extern png_byte FARDATA png_oFFs[5]; -extern png_byte FARDATA png_pCAL[5]; -extern png_byte FARDATA png_pHYs[5]; -extern png_byte FARDATA png_sBIT[5]; -extern png_byte FARDATA png_sRGB[5]; -extern png_byte FARDATA png_tEXt[5]; -extern png_byte FARDATA png_tIME[5]; -extern png_byte FARDATA png_tRNS[5]; -extern png_byte FARDATA png_zTXt[5]; +#define PNG_IHDR const png_byte png_IHDR[5] = { 73, 72, 68, 82, '\0'} +#define PNG_IDAT const png_byte png_IDAT[5] = { 73, 68, 65, 84, '\0'} +#define PNG_IEND const png_byte png_IEND[5] = { 73, 69, 78, 68, '\0'} +#define PNG_PLTE const png_byte png_PLTE[5] = { 80, 76, 84, 69, '\0'} +#define PNG_bKGD const png_byte png_bKGD[5] = { 98, 75, 71, 68, '\0'} +#define PNG_cHRM const png_byte png_cHRM[5] = { 99, 72, 82, 77, '\0'} +#define PNG_gAMA const png_byte png_gAMA[5] = {103, 65, 77, 65, '\0'} +#define PNG_hIST const png_byte png_hIST[5] = {104, 73, 83, 84, '\0'} +#define PNG_iCCP const png_byte png_iCCP[5] = {105, 67, 67, 80, '\0'} +#define PNG_iTXt const png_byte png_iTXt[5] = {105, 84, 88, 116, '\0'} +#define PNG_oFFs const png_byte png_oFFs[5] = {111, 70, 70, 115, '\0'} +#define PNG_pCAL const png_byte png_pCAL[5] = {112, 67, 65, 76, '\0'} +#define PNG_sCAL const png_byte png_sCAL[5] = {115, 67, 65, 76, '\0'} +#define PNG_pHYs const png_byte png_pHYs[5] = {112, 72, 89, 115, '\0'} +#define PNG_sBIT const png_byte png_sBIT[5] = {115, 66, 73, 84, '\0'} +#define PNG_sPLT const png_byte png_sPLT[5] = {115, 80, 76, 84, '\0'} +#define PNG_sRGB const png_byte png_sRGB[5] = {115, 82, 71, 66, '\0'} +#define PNG_tEXt const png_byte png_tEXt[5] = {116, 69, 88, 116, '\0'} +#define PNG_tIME const png_byte png_tIME[5] = {116, 73, 77, 69, '\0'} +#define PNG_tRNS const png_byte png_tRNS[5] = {116, 82, 78, 83, '\0'} +#define PNG_zTXt const png_byte png_zTXt[5] = {122, 84, 88, 116, '\0'} + +#ifdef PNG_USE_GLOBAL_ARRAYS +PNG_EXPORT_VAR (const png_byte FARDATA) png_IHDR[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_IDAT[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_IEND[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_PLTE[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_bKGD[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_cHRM[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_gAMA[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_hIST[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_iCCP[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_iTXt[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_oFFs[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_pCAL[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_sCAL[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_pHYs[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_sBIT[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_sPLT[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_sRGB[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_tEXt[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_tIME[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_tRNS[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_zTXt[5]; +#endif /* PNG_USE_GLOBAL_ARRAYS */ -#endif /* PNG_NO_EXTERN */ /* Inline macros to do direct reads of bytes from the input buffer. These * require that you are using an architecture that uses PNG byte ordering @@ -1737,51 +2714,104 @@ extern png_byte FARDATA png_zTXt[5]; * values, which is almost certainly true. */ #if defined(PNG_READ_BIG_ENDIAN_SUPPORTED) -#if defined(PNG_READ_pCAL_SUPPORTED) -#define png_get_int_32(buf) ( *((png_int_32p) (buf))) -#endif /* PNG_READ_pCAL_SUPPORTED */ -#define png_get_uint_32(buf) ( *((png_uint_32p) (buf))) -#define png_get_uint_16(buf) ( *((png_uint_16p) (buf))) +# if defined(PNG_pCAL_SUPPORTED) || defined(PNG_oFFs_SUPPORTED) +# define png_get_int_32(buf) ( *((png_int_32p) (buf))) +# endif +# define png_get_uint_32(buf) ( *((png_uint_32p) (buf))) +# define png_get_uint_16(buf) ( *((png_uint_16p) (buf))) #else -#if defined(PNG_READ_pCAL_SUPPORTED) +# if defined(PNG_pCAL_SUPPORTED) || defined(PNG_oFFs_SUPPORTED) PNG_EXTERN png_int_32 png_get_int_32 PNGARG((png_bytep buf)); -#endif /* PNG_READ_pCAL_SUPPORTED */ +# endif PNG_EXTERN png_uint_32 png_get_uint_32 PNGARG((png_bytep buf)); PNG_EXTERN png_uint_16 png_get_uint_16 PNGARG((png_bytep buf)); -#endif /* PNG_READ_BIG_ENDIAN_SUPPORTED */ - +#endif /* !PNG_READ_BIG_ENDIAN_SUPPORTED */ +/* RN: This define is blatent hack to get png to (hopefully) + link on OSX 10.2 and earlier versions of 10.3 due to an + Apple linking bug introduced in 10.2 */ +#define png_get_uint_31 wxpng_get_uint_31 +PNG_EXTERN png_uint_32 png_get_uint_31 PNGARG((png_structp png_ptr, + png_bytep buf)); /* Initialize png_ptr struct for reading, and allocate any other memory. - * (old interface - NOT DLL EXPORTED). + * (old interface - DEPRECATED - use png_create_read_struct instead). */ -extern void png_read_init PNGARG((png_structp png_ptr)); +extern PNG_EXPORT(void,png_read_init) PNGARG((png_structp png_ptr)); +#undef png_read_init +#define png_read_init(png_ptr) png_read_init_3(&png_ptr, \ + PNG_LIBPNG_VER_STRING, png_sizeof(png_struct)); +extern PNG_EXPORT(void,png_read_init_3) PNGARG((png_structpp ptr_ptr, + png_const_charp user_png_ver, png_size_t png_struct_size)); +extern PNG_EXPORT(void,png_read_init_2) PNGARG((png_structp png_ptr, + png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t + png_info_size)); /* Initialize png_ptr struct for writing, and allocate any other memory. - * (old interface - NOT DLL EXPORTED). + * (old interface - DEPRECATED - use png_create_write_struct instead). */ -extern void png_write_init PNGARG((png_structp png_ptr)); - -/* allocate memory for an internal libpng struct */ +extern PNG_EXPORT(void,png_write_init) PNGARG((png_structp png_ptr)); +#undef png_write_init +#define png_write_init(png_ptr) png_write_init_3(&png_ptr, \ + PNG_LIBPNG_VER_STRING, png_sizeof(png_struct)); +extern PNG_EXPORT(void,png_write_init_3) PNGARG((png_structpp ptr_ptr, + png_const_charp user_png_ver, png_size_t png_struct_size)); +extern PNG_EXPORT(void,png_write_init_2) PNGARG((png_structp png_ptr, + png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t + png_info_size)); + +/* Allocate memory for an internal libpng struct */ PNG_EXTERN png_voidp png_create_struct PNGARG((int type)); -/* free memory from internal libpng struct */ +/* Free memory from internal libpng struct */ PNG_EXTERN void png_destroy_struct PNGARG((png_voidp struct_ptr)); PNG_EXTERN png_voidp png_create_struct_2 PNGARG((int type, png_malloc_ptr - malloc_fn)); + malloc_fn, png_voidp mem_ptr)); PNG_EXTERN void png_destroy_struct_2 PNGARG((png_voidp struct_ptr, - png_free_ptr free_fn)); + png_free_ptr free_fn, png_voidp mem_ptr)); -/* free any memory that info_ptr points to and reset struct. */ +/* Free any memory that info_ptr points to and reset struct. */ PNG_EXTERN void png_info_destroy PNGARG((png_structp png_ptr, png_infop info_ptr)); +#ifndef PNG_1_0_X /* Function to allocate memory for zlib. */ PNG_EXTERN voidpf png_zalloc PNGARG((voidpf png_ptr, uInt items, uInt size)); -/* function to free memory for zlib */ +/* Function to free memory for zlib */ PNG_EXTERN void png_zfree PNGARG((voidpf png_ptr, voidpf ptr)); -/* reset the CRC variable */ +#ifdef PNG_SIZE_T +/* Function to convert a sizeof an item to png_sizeof item */ + PNG_EXTERN png_size_t PNGAPI png_convert_size PNGARG((size_t size)); +#endif + +/* Next four functions are used internally as callbacks. PNGAPI is required + * but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3. */ + +PNG_EXTERN void PNGAPI png_default_read_data PNGARG((png_structp png_ptr, + png_bytep data, png_size_t length)); + +#ifdef PNG_PROGRESSIVE_READ_SUPPORTED +PNG_EXTERN void PNGAPI png_push_fill_buffer PNGARG((png_structp png_ptr, + png_bytep buffer, png_size_t length)); +#endif + +PNG_EXTERN void PNGAPI png_default_write_data PNGARG((png_structp png_ptr, + png_bytep data, png_size_t length)); + +#if defined(PNG_WRITE_FLUSH_SUPPORTED) +#if !defined(PNG_NO_STDIO) +PNG_EXTERN void PNGAPI png_default_flush PNGARG((png_structp png_ptr)); +#endif +#endif +#else /* PNG_1_0_X */ +#ifdef PNG_PROGRESSIVE_READ_SUPPORTED +PNG_EXTERN void png_push_fill_buffer PNGARG((png_structp png_ptr, + png_bytep buffer, png_size_t length)); +#endif +#endif /* PNG_1_0_X */ + +/* Reset the CRC variable */ PNG_EXTERN void png_reset_crc PNGARG((png_structp png_ptr)); /* Write the "data" buffer to whatever output you are using. */ @@ -1792,14 +2822,22 @@ PNG_EXTERN void png_write_data PNGARG((png_structp png_ptr, png_bytep data, PNG_EXTERN void png_read_data PNGARG((png_structp png_ptr, png_bytep data, png_size_t length)); -/* read bytes into buf, and update png_ptr->crc */ +/* Read bytes into buf, and update png_ptr->crc */ PNG_EXTERN void png_crc_read PNGARG((png_structp png_ptr, png_bytep buf, png_size_t length)); -/* read "skip" bytes, read the file crc, and (optionally) verify png_ptr->crc */ +/* Decompress data in a chunk that uses compression */ +#if defined(PNG_zTXt_SUPPORTED) || defined(PNG_iTXt_SUPPORTED) || \ + defined(PNG_iCCP_SUPPORTED) || defined(PNG_sPLT_SUPPORTED) +PNG_EXTERN png_charp png_decompress_chunk PNGARG((png_structp png_ptr, + int comp_type, png_charp chunkdata, png_size_t chunklength, + png_size_t prefix_length, png_size_t *data_length)); +#endif + +/* Read "skip" bytes, read the file crc, and (optionally) verify png_ptr->crc */ PNG_EXTERN int png_crc_finish PNGARG((png_structp png_ptr, png_uint_32 skip)); -/* read the CRC from the file and compare it to the libpng calculated CRC */ +/* Read the CRC from the file and compare it to the libpng calculated CRC */ PNG_EXTERN int png_crc_error PNGARG((png_structp png_ptr)); /* Calculate the CRC over a section of data. Note that we are only @@ -1813,17 +2851,18 @@ PNG_EXTERN void png_calculate_crc PNGARG((png_structp png_ptr, png_bytep ptr, PNG_EXTERN void png_flush PNGARG((png_structp png_ptr)); #endif + /* Place a 32-bit number into a buffer in PNG byte order (big-endian). * The only currently known PNG chunks that use signed numbers are * the ancillary extension chunks, oFFs and pCAL. */ PNG_EXTERN void png_save_uint_32 PNGARG((png_bytep buf, png_uint_32 i)); -#if defined(PNG_WRITE_pCAL_SUPPORTED) +#if defined(PNG_WRITE_pCAL_SUPPORTED) || defined(PNG_WRITE_oFFs_SUPPORTED) PNG_EXTERN void png_save_int_32 PNGARG((png_bytep buf, png_int_32 i)); #endif -/* Place a 16 bit number into a buffer in PNG byte order. +/* Place a 16-bit number into a buffer in PNG byte order. * The parameter is declared unsigned int, not png_uint_16, * just to avoid potential problems on pre-ANSI C compilers. */ @@ -1839,8 +2878,8 @@ PNG_EXTERN void png_write_sig PNGARG((png_structp png_ptr)); */ PNG_EXTERN void png_write_IHDR PNGARG((png_structp png_ptr, png_uint_32 width, png_uint_32 height, - int bit_depth, int color_type, int compression_type, int filter_type, - int interlace_type)); + int bit_depth, int color_type, int compression_method, int filter_method, + int interlace_method)); PNG_EXTERN void png_write_PLTE PNGARG((png_structp png_ptr, png_colorp palette, png_uint_32 num_pal)); @@ -1851,8 +2890,14 @@ PNG_EXTERN void png_write_IDAT PNGARG((png_structp png_ptr, png_bytep data, PNG_EXTERN void png_write_IEND PNGARG((png_structp png_ptr)); #if defined(PNG_WRITE_gAMA_SUPPORTED) +#ifdef PNG_FLOATING_POINT_SUPPORTED PNG_EXTERN void png_write_gAMA PNGARG((png_structp png_ptr, double file_gamma)); #endif +#ifdef PNG_FIXED_POINT_SUPPORTED +PNG_EXTERN void png_write_gAMA_fixed PNGARG((png_structp png_ptr, png_fixed_point + file_gamma)); +#endif +#endif #if defined(PNG_WRITE_sBIT_SUPPORTED) PNG_EXTERN void png_write_sBIT PNGARG((png_structp png_ptr, png_color_8p sbit, @@ -1860,17 +2905,38 @@ PNG_EXTERN void png_write_sBIT PNGARG((png_structp png_ptr, png_color_8p sbit, #endif #if defined(PNG_WRITE_cHRM_SUPPORTED) +#ifdef PNG_FLOATING_POINT_SUPPORTED PNG_EXTERN void png_write_cHRM PNGARG((png_structp png_ptr, double white_x, double white_y, double red_x, double red_y, double green_x, double green_y, double blue_x, double blue_y)); #endif +#ifdef PNG_FIXED_POINT_SUPPORTED +PNG_EXTERN void png_write_cHRM_fixed PNGARG((png_structp png_ptr, + png_fixed_point int_white_x, png_fixed_point int_white_y, + png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point + int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x, + png_fixed_point int_blue_y)); +#endif +#endif #if defined(PNG_WRITE_sRGB_SUPPORTED) PNG_EXTERN void png_write_sRGB PNGARG((png_structp png_ptr, int intent)); #endif +#if defined(PNG_WRITE_iCCP_SUPPORTED) +PNG_EXTERN void png_write_iCCP PNGARG((png_structp png_ptr, + png_charp name, int compression_type, + png_charp profile, int proflen)); + /* Note to maintainer: profile should be png_bytep */ +#endif + +#if defined(PNG_WRITE_sPLT_SUPPORTED) +PNG_EXTERN void png_write_sPLT PNGARG((png_structp png_ptr, + png_sPLT_tp palette)); +#endif + #if defined(PNG_WRITE_tRNS_SUPPORTED) PNG_EXTERN void png_write_tRNS PNGARG((png_structp png_ptr, png_bytep trans, png_color_16p values, int number, int color_type)); @@ -1886,8 +2952,8 @@ PNG_EXTERN void png_write_hIST PNGARG((png_structp png_ptr, png_uint_16p hist, int num_hist)); #endif -#if defined(PNG_WRITE_tEXt_SUPPORTED) || defined(PNG_WRITE_zTXt_SUPPORTED) || \ - defined(PNG_WRITE_pCAL_SUPPORTED) +#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_pCAL_SUPPORTED) || \ + defined(PNG_WRITE_iCCP_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED) PNG_EXTERN png_size_t png_check_keyword PNGARG((png_structp png_ptr, png_charp key, png_charpp new_key)); #endif @@ -1902,9 +2968,20 @@ PNG_EXTERN void png_write_zTXt PNGARG((png_structp png_ptr, png_charp key, png_charp text, png_size_t text_len, int compression)); #endif +#if defined(PNG_WRITE_iTXt_SUPPORTED) +PNG_EXTERN void png_write_iTXt PNGARG((png_structp png_ptr, + int compression, png_charp key, png_charp lang, png_charp lang_key, + png_charp text)); +#endif + +#if defined(PNG_TEXT_SUPPORTED) /* Added at version 1.0.14 and 1.2.4 */ +PNG_EXTERN int png_set_text_2 PNGARG((png_structp png_ptr, + png_infop info_ptr, png_textp text_ptr, int num_text)); +#endif + #if defined(PNG_WRITE_oFFs_SUPPORTED) PNG_EXTERN void png_write_oFFs PNGARG((png_structp png_ptr, - png_uint_32 x_offset, png_uint_32 y_offset, int unit_type)); + png_int_32 x_offset, png_int_32 y_offset, int unit_type)); #endif #if defined(PNG_WRITE_pCAL_SUPPORTED) @@ -1924,6 +3001,18 @@ PNG_EXTERN void png_write_tIME PNGARG((png_structp png_ptr, png_timep mod_time)); #endif +#if defined(PNG_WRITE_sCAL_SUPPORTED) +#if defined(PNG_FLOATING_POINT_SUPPORTED) && !defined(PNG_NO_STDIO) +PNG_EXTERN void png_write_sCAL PNGARG((png_structp png_ptr, + int unit, double width, double height)); +#else +#ifdef PNG_FIXED_POINT_SUPPORTED +PNG_EXTERN void png_write_sCAL_s PNGARG((png_structp png_ptr, + int unit, png_charp width, png_charp height)); +#endif +#endif +#endif + /* Called when finished processing a row of data */ PNG_EXTERN void png_write_finish_row PNGARG((png_structp png_ptr)); @@ -1940,10 +3029,15 @@ PNG_EXTERN void png_combine_row PNGARG((png_structp png_ptr, png_bytep row, #if defined(PNG_READ_INTERLACING_SUPPORTED) /* expand an interlaced row */ +/* OLD pre-1.0.9 interface: PNG_EXTERN void png_do_read_interlace PNGARG((png_row_infop row_info, png_bytep row, int pass, png_uint_32 transformations)); + */ +PNG_EXTERN void png_do_read_interlace PNGARG((png_structp png_ptr)); #endif +/* GRR TO DO (2.0 or whenever): simplify other internal calling interfaces */ + #if defined(PNG_WRITE_INTERLACING_SUPPORTED) /* grab pixels out of a row for an interlaced pass */ PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info, @@ -2062,12 +3156,17 @@ PNG_EXTERN void png_do_shift PNGARG((png_row_infop row_info, png_bytep row, #endif #if defined(PNG_READ_BACKGROUND_SUPPORTED) +#if defined(PNG_READ_GAMMA_SUPPORTED) PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row, png_color_16p trans_values, png_color_16p background, png_color_16p background_1, png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1, png_uint_16pp gamma_16, png_uint_16pp gamma_16_from_1, png_uint_16pp gamma_16_to_1, int gamma_shift)); +#else +PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row, + png_color_16p trans_values, png_color_16p background)); +#endif #endif #if defined(PNG_READ_GAMMA_SUPPORTED) @@ -2095,13 +3194,8 @@ PNG_EXTERN void png_handle_PLTE PNGARG((png_structp png_ptr, png_infop info_ptr, PNG_EXTERN void png_handle_IEND PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length)); -#if defined(PNG_READ_gAMA_SUPPORTED) -PNG_EXTERN void png_handle_gAMA PNGARG((png_structp png_ptr, png_infop info_ptr, - png_uint_32 length)); -#endif - -#if defined(PNG_READ_sBIT_SUPPORTED) -PNG_EXTERN void png_handle_sBIT PNGARG((png_structp png_ptr, png_infop info_ptr, +#if defined(PNG_READ_bKGD_SUPPORTED) +PNG_EXTERN void png_handle_bKGD PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length)); #endif @@ -2110,23 +3204,23 @@ PNG_EXTERN void png_handle_cHRM PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length)); #endif -#if defined(PNG_READ_sRGB_SUPPORTED) -PNG_EXTERN void png_handle_sRGB PNGARG((png_structp png_ptr, png_infop info_ptr, +#if defined(PNG_READ_gAMA_SUPPORTED) +PNG_EXTERN void png_handle_gAMA PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length)); #endif -#if defined(PNG_READ_tRNS_SUPPORTED) -PNG_EXTERN void png_handle_tRNS PNGARG((png_structp png_ptr, png_infop info_ptr, +#if defined(PNG_READ_hIST_SUPPORTED) +PNG_EXTERN void png_handle_hIST PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length)); #endif -#if defined(PNG_READ_bKGD_SUPPORTED) -PNG_EXTERN void png_handle_bKGD PNGARG((png_structp png_ptr, png_infop info_ptr, +#if defined(PNG_READ_iCCP_SUPPORTED) +extern void png_handle_iCCP PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length)); -#endif +#endif /* PNG_READ_iCCP_SUPPORTED */ -#if defined(PNG_READ_hIST_SUPPORTED) -PNG_EXTERN void png_handle_hIST PNGARG((png_structp png_ptr, png_infop info_ptr, +#if defined(PNG_READ_iTXt_SUPPORTED) +PNG_EXTERN void png_handle_iTXt PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length)); #endif @@ -2145,8 +3239,23 @@ PNG_EXTERN void png_handle_pHYs PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length)); #endif -#if defined(PNG_READ_tIME_SUPPORTED) -PNG_EXTERN void png_handle_tIME PNGARG((png_structp png_ptr, png_infop info_ptr, +#if defined(PNG_READ_sBIT_SUPPORTED) +PNG_EXTERN void png_handle_sBIT PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +#if defined(PNG_READ_sCAL_SUPPORTED) +PNG_EXTERN void png_handle_sCAL PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +#if defined(PNG_READ_sPLT_SUPPORTED) +extern void png_handle_sPLT PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif /* PNG_READ_sPLT_SUPPORTED */ + +#if defined(PNG_READ_sRGB_SUPPORTED) +PNG_EXTERN void png_handle_sRGB PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length)); #endif @@ -2155,6 +3264,16 @@ PNG_EXTERN void png_handle_tEXt PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length)); #endif +#if defined(PNG_READ_tIME_SUPPORTED) +PNG_EXTERN void png_handle_tIME PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +#if defined(PNG_READ_tRNS_SUPPORTED) +PNG_EXTERN void png_handle_tRNS PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + #if defined(PNG_READ_zTXt_SUPPORTED) PNG_EXTERN void png_handle_zTXt PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length)); @@ -2181,8 +3300,6 @@ PNG_EXTERN void png_push_check_crc PNGARG((png_structp png_ptr)); PNG_EXTERN void png_push_crc_skip PNGARG((png_structp png_ptr, png_uint_32 length)); PNG_EXTERN void png_push_crc_finish PNGARG((png_structp png_ptr)); -PNG_EXTERN void png_push_fill_buffer PNGARG((png_structp png_ptr, - png_bytep buffer, png_size_t length)); PNG_EXTERN void png_push_save_buffer PNGARG((png_structp png_ptr)); PNG_EXTERN void png_push_restore_buffer PNGARG((png_structp png_ptr, png_bytep buffer, png_size_t buffer_length)); @@ -2214,14 +3331,34 @@ PNG_EXTERN void png_push_handle_zTXt PNGARG((png_structp png_ptr, PNG_EXTERN void png_push_read_zTXt PNGARG((png_structp png_ptr, png_infop info_ptr)); #endif +#if defined(PNG_READ_iTXt_SUPPORTED) +PNG_EXTERN void png_push_handle_iTXt PNGARG((png_structp png_ptr, + png_infop info_ptr, png_uint_32 length)); +PNG_EXTERN void png_push_read_iTXt PNGARG((png_structp png_ptr, + png_infop info_ptr)); +#endif #endif /* PNG_PROGRESSIVE_READ_SUPPORTED */ +#ifdef PNG_MNG_FEATURES_SUPPORTED +PNG_EXTERN void png_do_read_intrapixel PNGARG((png_row_infop row_info, + png_bytep row)); +PNG_EXTERN void png_do_write_intrapixel PNGARG((png_row_infop row_info, + png_bytep row)); +#endif + +#if defined(PNG_ASSEMBLER_CODE_SUPPORTED) +/* png.c */ /* PRIVATE */ +PNG_EXTERN void png_init_mmx_flags PNGARG((png_structp png_ptr)); +#endif +/* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */ + #endif /* PNG_INTERNAL */ #ifdef __cplusplus } #endif +#endif /* PNG_VERSION_INFO_ONLY */ /* do not put anything past this line */ -#endif /* _PNG_H */ +#endif /* PNG_H */