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Third Party Libpng

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提交 6c7a09ab 编写于 作者: G Glenn Randers-Pehrson
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[devel] Reformatted some comments.

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png.h
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/* png.h - header file for PNG reference library
*
* libpng version 1.4.0beta63 - June 12, 2009
* libpng version 1.4.0beta63 - June 16, 2009
* Copyright (c) 1998-2009 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.)
......@@ -9,7 +9,7 @@
* 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 1.4.0beta63 - June 12, 2009: Glenn
* libpng versions 0.97, January 1998, through 1.4.0beta63 - June 16, 2009: Glenn
* See also "Contributing Authors", below.
*
* Note about libpng version numbers:
......@@ -157,7 +157,7 @@
* If you modify libpng you may insert additional notices immediately following
* this sentence.
*
* libpng versions 1.2.6, August 15, 2004, through 1.4.0beta63, June 12, 2009, are
* libpng versions 1.2.6, August 15, 2004, through 1.4.0beta63, June 16, 2009, are
* Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
* distributed according to the same disclaimer and license as libpng-1.2.5
* with the following individual added to the list of Contributing Authors:
......@@ -333,7 +333,7 @@
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.4.0beta63"
#define PNG_HEADER_VERSION_STRING \
" libpng version 1.4.0beta63 - June 12, 2009\n"
" libpng version 1.4.0beta63 - June 16, 2009\n"
#define PNG_LIBPNG_VER_SONUM 14
#define PNG_LIBPNG_VER_DLLNUM 14
......@@ -343,7 +343,8 @@
#define PNG_LIBPNG_VER_MINOR 4
#define PNG_LIBPNG_VER_RELEASE 0
/* This should match the numeric part of the final component of
* PNG_LIBPNG_VER_STRING, omitting any leading zero: */
* PNG_LIBPNG_VER_STRING, omitting any leading zero:
*/
#define PNG_LIBPNG_VER_BUILD 63
......@@ -368,11 +369,12 @@
* We must not include leading zeros.
* Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only
* version 1.0.0 was mis-numbered 100 instead of 10000). From
* version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release */
* version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release
*/
#define PNG_LIBPNG_VER 10400 /* 1.4.0 */
#ifndef PNG_VERSION_INFO_ONLY
/* include the compression library's header */
/* Include the compression library's header */
#include "zlib.h"
#endif
......@@ -380,12 +382,13 @@
#define jmpbuf __jmpbuf
#endif
/* include all user configurable info, including optional assembler routines */
/* Include all user configurable info, including optional assembler routines */
#include "pngconf.h"
/*
* Added at libpng-1.2.8 */
/* Ref MSDN: Private as priority over Special
* Added at libpng-1.2.8
*
* Ref MSDN: Private as priority over Special
* VS_FF_PRIVATEBUILD File *was not* built using standard release
* procedures. If this value is given, the StringFileInfo block must
* contain a PrivateBuild string.
......@@ -421,14 +424,14 @@ extern "C" {
* which applications aren't expected to use directly.
*/
/* variables declared in png.c - only it needs to define PNG_NO_EXTERN */
/* Variables declared in png.c - only it needs to define PNG_NO_EXTERN */
#if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN)
/* Version information for C files, stored in png.c. This had better match
* the version above.
*/
#ifdef PNG_USE_GLOBAL_ARRAYS
PNG_EXPORT_VAR (const char) png_libpng_ver[18];
/* need room for 99.99.99beta99z */
/* Need room for 99.99.99beta99z */
#else
#define png_libpng_ver png_get_header_ver(NULL)
#endif
......@@ -812,7 +815,7 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
#endif
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
/* storage for unknown chunks that the library doesn't recognize. */
/* Storage for unknown chunks that the library doesn't recognize. */
png_unknown_chunkp unknown_chunks;
png_size_t unknown_chunks_num;
#endif
......@@ -827,7 +830,7 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
#endif
#if defined(PNG_sPLT_SUPPORTED)
/* data on sPLT chunks (there may be more than one). */
/* Data on sPLT chunks (there may be more than one). */
png_sPLT_tp splt_palettes;
png_uint_32 splt_palettes_num;
#endif
......@@ -1156,7 +1159,7 @@ struct png_struct_def
#endif /* PNG_bKGD_SUPPORTED */
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
png_flush_ptr output_flush_fn;/* Function for flushing output */
png_flush_ptr output_flush_fn; /* Function for flushing output */
png_uint_32 flush_dist; /* how many rows apart to flush, 0 - no flush */
png_uint_32 flush_rows; /* number of rows written since last flush */
#endif
......@@ -1221,7 +1224,7 @@ struct png_struct_def
#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
/* for the Borland special 64K segment handler */
/* For the Borland special 64K segment handler */
png_bytepp offset_table_ptr;
png_bytep offset_table;
png_uint_16 offset_table_number;
......@@ -1281,7 +1284,7 @@ struct png_struct_def
#if defined(PNG_MNG_FEATURES_SUPPORTED) || \
defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \
defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED)
/* changed from png_byte to png_uint_32 at version 1.2.0 */
/* Changed from png_byte to png_uint_32 at version 1.2.0 */
png_uint_32 mng_features_permitted;
#endif
......@@ -1329,14 +1332,13 @@ struct png_struct_def
png_uint_32 user_height_max;
/* Added in libpng-1.4.0: Total number of sPLT, text, and unknown
* chunks that can be stored (0x7fffffff means unlimited).
*/
png_uint_32 user_chunk_cache_max;
#endif
/* New member added in libpng-1.0.25 and 1.2.17 */
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
/* storage for unknown chunk that the library doesn't recognize. */
/* Storage for unknown chunk that the library doesn't recognize. */
png_unknown_chunk unknown_chunk;
#endif
......@@ -1455,7 +1457,7 @@ 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. */
/* 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
......@@ -1466,11 +1468,11 @@ extern PNG_EXPORT(png_charp,png_convert_to_rfc1123)
#endif
#if defined(PNG_WRITE_tIME_SUPPORTED)
/* convert from a struct tm to png_time */
/* Convert from a struct tm to png_time */
extern PNG_EXPORT(void,png_convert_from_struct_tm) PNGARG((png_timep ptime,
struct tm FAR * ttime));
/* convert from time_t to png_time. Uses gmtime() */
/* Convert from time_t to png_time. Uses gmtime() */
extern PNG_EXPORT(void,png_convert_from_time_t) PNGARG((png_timep ptime,
time_t ttime));
#endif /* PNG_WRITE_tIME_SUPPORTED */
......@@ -1586,7 +1588,7 @@ extern PNG_EXPORT(void,png_set_background) PNGARG((png_structp png_ptr,
#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
......@@ -1613,74 +1615,74 @@ extern PNG_EXPORT(void,png_set_flush) PNGARG((png_structp png_ptr, int nrows));
extern PNG_EXPORT(void,png_write_flush) PNGARG((png_structp png_ptr));
#endif
/* optional update palette with requested transformations */
/* Optional update palette with requested transformations */
extern PNG_EXPORT(void,png_start_read_image) PNGARG((png_structp png_ptr));
/* optional call to update the users info structure */
/* Optional call to update the users info structure */
extern PNG_EXPORT(void,png_read_update_info) PNGARG((png_structp png_ptr,
png_infop info_ptr));
#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
/* read one or more rows of image data. */
/* 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
#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
/* read a row of data. */
/* 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. */
/* 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 */
/* Write a row of image data */
extern PNG_EXPORT(void,png_write_row) PNGARG((png_structp png_ptr,
png_bytep row));
/* write a few rows of image data */
/* Write a few rows of image data */
extern PNG_EXPORT(void,png_write_rows) PNGARG((png_structp png_ptr,
png_bytepp row, png_uint_32 num_rows));
/* write the image data */
/* Write the image data */
extern PNG_EXPORT(void,png_write_image) PNGARG((png_structp png_ptr,
png_bytepp image));
/* writes the end of the PNG file. */
/* Write the end of the PNG file. */
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. */
/* 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 */
/* Free any memory associated with the png_info_struct */
extern PNG_EXPORT(void,png_destroy_info_struct) PNGARG((png_structp png_ptr,
png_infopp info_ptr_ptr));
/* free any memory associated with the png_struct and the png_info_structs */
/* Free any memory associated with the png_struct and the png_info_structs */
extern PNG_EXPORT(void,png_destroy_read_struct) PNGARG((png_structpp
png_ptr_ptr, png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr));
/* free all memory used by the read (old method - NOT DLL EXPORTED) */
/* Free all memory used by the read (old method - NOT DLL EXPORTED) */
extern void png_read_destroy PNGARG((png_structp png_ptr, png_infop info_ptr,
png_infop end_info_ptr));
/* free any memory associated with the png_struct and the png_info_structs */
/* Free any memory associated with the png_struct and the png_info_structs */
extern PNG_EXPORT(void,png_destroy_write_struct)
PNGARG((png_structpp png_ptr_ptr, png_infopp info_ptr_ptr));
/* free any memory used in png_ptr struct (old method - NOT DLL EXPORTED) */
/* Free any memory used in png_ptr struct (old method - NOT DLL EXPORTED) */
extern void png_write_destroy PNGARG((png_structp png_ptr));
/* set the libpng method of handling chunk CRC errors */
/* Set the libpng method of handling chunk CRC errors */
extern PNG_EXPORT(void,png_set_crc_action) PNGARG((png_structp png_ptr,
int crit_action, int ancil_action));
......@@ -1708,7 +1710,7 @@ extern PNG_EXPORT(void,png_set_crc_action) PNGARG((png_structp png_ptr,
* header file (zlib.h) for an explination of the compression functions.
*/
/* set the filtering method(s) used by libpng. Currently, the only valid
/* Set the filtering method(s) used by libpng. Currently, the only valid
* value for "method" is 0.
*/
extern PNG_EXPORT(void,png_set_filter) PNGARG((png_structp png_ptr, int method,
......@@ -1905,15 +1907,15 @@ extern PNG_EXPORT(void,png_set_progressive_read_fn) PNGARG((png_structp png_ptr,
png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn,
png_progressive_end_ptr end_fn));
/* returns the user pointer associated with the push read functions */
/* Returns the user pointer associated with the push read functions */
extern PNG_EXPORT(png_voidp,png_get_progressive_ptr)
PNGARG((png_structp png_ptr));
/* function to be called when data becomes available */
/* Function to be called when data becomes available */
extern PNG_EXPORT(void,png_process_data) PNGARG((png_structp png_ptr,
png_infop info_ptr, png_bytep buffer, png_size_t buffer_size));
/* function that combines rows. Not very much different than the
/* Function that combines rows. Not very much different than the
* png_combine_row() call. Is this even used?????
*/
extern PNG_EXPORT(void,png_progressive_combine_row) PNGARG((png_structp png_ptr,
......@@ -1944,7 +1946,7 @@ extern PNG_EXPORT(void,png_free_data) PNGARG((png_structp png_ptr,
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 */
/* 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
......@@ -2027,11 +2029,13 @@ 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(). */
* 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(). */
* 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
......@@ -2270,8 +2274,7 @@ 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
/*
* Note while png_set_text() will accept a structure whose text,
/* 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
......@@ -2357,8 +2360,9 @@ extern PNG_EXPORT(png_uint_32,png_get_unknown_chunks) PNGARG((png_structp
#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); */
* 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));
......@@ -2404,7 +2408,8 @@ extern PNG_EXPORT(void, png_write_png) PNGARG((png_structp png_ptr,
#if (PNG_DEBUG > 1)
/* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on
* non-ISO compilers */
* non-ISO compilers
*/
# ifdef __STDC__
# ifndef png_debug
# define png_debug(l,m) \
......@@ -2501,7 +2506,8 @@ extern PNG_EXPORT(png_uint_32,png_permit_mng_features) PNGARG((png_structp
#define PNG_HANDLE_CHUNK_ALWAYS 3
/* Strip the prepended error numbers ("#nnn ") from error and warning
* messages before passing them to the error or warning handler. */
* 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));
......@@ -2563,7 +2569,9 @@ extern PNG_EXPORT(png_bytep,png_get_io_chunk_name)
#define PNG_IO_MASK_LOC 0x00f0 /* current location: sig/hdr/data/crc */
#endif /* ?PNG_IO_STATE_SUPPORTED */
/* Maintainer: Put new public prototypes here ^, in libpng.3, and project defs */
/* 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
......@@ -2592,7 +2600,7 @@ extern PNG_EXPORT(png_bytep,png_get_io_chunk_name)
(png_uint_32)(alpha)) + (png_uint_32)32768L); \
(composite) = (png_uint_16)((temp + (temp >> 16)) >> 16); }
#else /* standard method using integer division */
#else /* Standard method using integer division */
# define png_composite(composite, fg, alpha, bg) \
(composite) = (png_byte)(((png_uint_16)(fg) * (png_uint_16)(alpha) + \
......@@ -2638,8 +2646,7 @@ extern PNG_EXPORT(png_uint_32,png_get_uint_31)
PNGARG((png_structp png_ptr, png_bytep buf));
/* No png_get_int_16 -- may be added if there's a real need for it. */
/* Place a 32-bit number into a buffer in PNG byte order (big-endian).
*/
/* Place a 32-bit number into a buffer in PNG byte order (big-endian). */
extern PNG_EXPORT(void,png_save_uint_32)
PNGARG((png_bytep buf, png_uint_32 i));
extern PNG_EXPORT(void,png_save_int_32)
......@@ -2671,5 +2678,5 @@ extern PNG_EXPORT(void,png_save_uint_16)
#endif
#endif /* PNG_VERSION_INFO_ONLY */
/* do not put anything past this line */
/* Do not put anything past this line */
#endif /* PNG_H */
pngpriv.h
浏览文件 @ 6c7a09ab
/* pngpriv.h - private declarations for use inside libpng
*
* libpng version 1.4.0beta63 - June 5, 2009
* libpng version 1.4.0beta63 - June 16, 2009
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
......@@ -95,7 +95,7 @@
#define PNG_HAVE_PNG_SIGNATURE 0x1000
#define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */
/* flags for the transformations the PNG library does on the image data */
/* Flags for the transformations the PNG library does on the image data */
#define PNG_BGR 0x0001
#define PNG_INTERLACE 0x0002
#define PNG_PACK 0x0004
......@@ -130,7 +130,7 @@
/* 0x20000000L unused */
/* 0x40000000L unused */
/* flags for png_create_struct */
/* Flags for png_create_struct */
#define PNG_STRUCT_PNG 0x0001
#define PNG_STRUCT_INFO 0x0002
......@@ -140,7 +140,7 @@
#define PNG_COST_SHIFT 3
#define PNG_COST_FACTOR (1<<(PNG_COST_SHIFT))
/* flags for the png_ptr->flags rather than declaring a byte for each one */
/* Flags for the png_ptr->flags rather than declaring a byte for each one */
#define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001
#define PNG_FLAG_ZLIB_CUSTOM_LEVEL 0x0002
#define PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL 0x0004
......@@ -182,7 +182,7 @@
#define PNG_FLAG_CRC_MASK (PNG_FLAG_CRC_ANCILLARY_MASK | \
PNG_FLAG_CRC_CRITICAL_MASK)
/* save typing and make code easier to understand */
/* 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)) + \
......@@ -201,9 +201,9 @@
#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 */
/* 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. */
/* Place to hold the signature string for a PNG file. */
#ifdef PNG_USE_GLOBAL_ARRAYS
PNG_EXPORT_VAR (const png_byte FARDATA) png_sig[8];
#else
......@@ -359,7 +359,7 @@ 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
/* write various chunks */
/* Write various chunks */
/* Write the IHDR chunk, and update the png_struct with the necessary
* information.
......@@ -509,12 +509,12 @@ PNG_EXTERN void png_write_start_row PNGARG((png_structp png_ptr));
PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr));
#endif
/* combine a row of data, dealing with alpha, etc. if requested */
/* Combine a row of data, dealing with alpha, etc. if requested */
PNG_EXTERN void png_combine_row PNGARG((png_structp png_ptr, png_bytep row,
int mask));
#if defined(PNG_READ_INTERLACING_SUPPORTED)
/* expand an interlaced row */
/* 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));
......@@ -525,12 +525,12 @@ PNG_EXTERN void png_do_read_interlace PNGARG((png_structp png_ptr));
/* 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 */
/* Grab pixels out of a row for an interlaced pass */
PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info,
png_bytep row, int pass));
#endif
/* unfilter a row */
/* Unfilter a row */
PNG_EXTERN void png_read_filter_row PNGARG((png_structp png_ptr,
png_row_infop row_info, png_bytep row, png_bytep prev_row, int filter));
......@@ -541,16 +541,16 @@ PNG_EXTERN void png_write_find_filter PNGARG((png_structp png_ptr,
/* Write out the filtered row. */
PNG_EXTERN void png_write_filtered_row PNGARG((png_structp png_ptr,
png_bytep filtered_row));
/* finish a row while reading, dealing with interlacing passes, etc. */
/* Finish a row while reading, dealing with interlacing passes, etc. */
PNG_EXTERN void png_read_finish_row PNGARG((png_structp png_ptr));
/* initialize the row buffers, etc. */
/* Initialize the row buffers, etc. */
PNG_EXTERN void png_read_start_row PNGARG((png_structp png_ptr));
/* optional call to update the users info structure */
/* Optional call to update the users info structure */
PNG_EXTERN void png_read_transform_info PNGARG((png_structp png_ptr,
png_infop info_ptr));
/* these are the functions that do the transformations */
/* These are the functions that do the transformations */
#if defined(PNG_READ_FILLER_SUPPORTED)
PNG_EXTERN void png_do_read_filler PNGARG((png_row_infop row_info,
png_bytep row, png_uint_32 filler, png_uint_32 flags));
......@@ -677,7 +677,7 @@ PNG_EXTERN void png_do_expand PNGARG((png_row_infop row_info,
* then calls the appropriate callback for the chunk if it is valid.
*/
/* decode the IHDR chunk */
/* Decode the IHDR chunk */
PNG_EXTERN void png_handle_IHDR PNGARG((png_structp png_ptr, png_infop info_ptr,
png_uint_32 length));
PNG_EXTERN void png_handle_PLTE PNGARG((png_structp png_ptr, png_infop info_ptr,
......@@ -776,7 +776,7 @@ PNG_EXTERN void png_handle_unknown PNGARG((png_structp png_ptr,
PNG_EXTERN void png_check_chunk_name PNGARG((png_structp png_ptr,
png_bytep chunk_name));
/* handle the transformations for reading and writing */
/* Handle the transformations for reading and writing */
PNG_EXTERN void png_do_read_transformations PNGARG((png_structp png_ptr));
PNG_EXTERN void png_do_write_transformations PNGARG((png_structp png_ptr));
......
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