X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4946a942d77cf51e00aa56404756e124d7c11411..7d09b97f5321d0accd758eb420c008853ad9ec26:/src/png/png.h

diff --git a/src/png/png.h b/src/png/png.h
index 365c80b392..b57acb4141 100644
--- a/src/png/png.h
+++ b/src/png/png.h
@@ -1,14 +1,14 @@
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.2.4 - July 8, 2002
- * Copyright (c) 1998-2002 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 1.2.4 - July 8, 2002: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.7 - September 12, 2004: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -93,6 +93,19 @@
  *    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 major
  *    and minor numbers; the shared-library major version number will be
@@ -112,8 +125,8 @@
  *    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 <ftp://ftp.uu.net/graphics/png/documents/>
- * and as a W3C Recommendation <http://www.w3.org/TR/REC.png.html>
+ * is available as a W3C Recommendation and as an ISO Specification,
+ * <http://www.w3.org/TR/2003/REC-PNG-20031110/
  */
 
 /*
@@ -122,10 +135,17 @@
  * If you modify libpng you may insert additional notices immediately following
  * this sentence.
  *
- * libpng versions 1.0.7, July 1, 2000, through 1.2.4, July 8, 2002, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.2.7, September 12, 2004, are
+ * Copyright (c) 2004 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:
+ *
+ *    Cosmin Truta
+ *
+ * libpng versions 1.0.7, July 1, 2000, through 1.2.5, October 3, 2002, are
  * Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are
  * distributed according to the same disclaimer and license as libpng-1.0.6
- * with the following individuals added to the list of Contributing Authors
+ * with the following individuals added to the list of Contributing Authors:
  *
  *    Simon-Pierre Cadieux
  *    Eric S. Raymond
@@ -141,8 +161,8 @@
  *    the user.
  *
  * libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
- * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
- * Distributed according to the same disclaimer and license as libpng-0.96,
+ * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson, and are
+ * distributed according to the same disclaimer and license as libpng-0.96,
  * with the following individuals added to the list of Contributing Authors:
  *
  *    Tom Lane
@@ -227,13 +247,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    July 8, 2002
+ *    September 12, 2004
  *
  *    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 0.71 and
- *    upward through 1.2.4 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.2.7 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
@@ -289,7 +309,9 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.2.4"
+#define PNG_LIBPNG_VER_STRING "1.2.7"
+#define PNG_HEADER_VERSION_STRING \
+   " libpng version 1.2.7 - September 12, 2004 (header)\n"
 
 #define PNG_LIBPNG_VER_SONUM   0
 #define PNG_LIBPNG_VER_DLLNUM  %DLLNUM%
@@ -297,11 +319,11 @@
 /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
 #define PNG_LIBPNG_VER_MAJOR   1
 #define PNG_LIBPNG_VER_MINOR   2
-#define PNG_LIBPNG_VER_RELEASE 4
+#define PNG_LIBPNG_VER_RELEASE 7
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero: */
 
-#define PNG_LIBPNG_VER_BUILD  0
+#define PNG_LIBPNG_VER_BUILD  3
 
 #define PNG_LIBPNG_BUILD_ALPHA    1
 #define PNG_LIBPNG_BUILD_BETA     2
@@ -309,14 +331,14 @@
 #define PNG_LIBPNG_BUILD_STABLE   4
 #define PNG_LIBPNG_BUILD_TYPEMASK 7
 #define PNG_LIBPNG_BUILD_PATCH    8 /* Can be OR'ed with STABLE only */
-#define PNG_LIBPNG_BUILD_TYPE 4
+#define PNG_LIBPNG_BUILD_TYPE 3
 
 /* Careful here.  At one time, Guy wanted to use 082, but that would be octal.
  * 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 */
-#define PNG_LIBPNG_VER 10204 /* 1.2.4 */
+#define PNG_LIBPNG_VER 10207 /* 1.2.7 */
 
 #ifndef PNG_VERSION_INFO_ONLY
 
@@ -828,7 +850,11 @@ typedef png_info FAR * png_infop;
 typedef png_info FAR * FAR * png_infopp;
 
 /* Maximum positive integer used in PNG is (2^31)-1 */
-#define PNG_MAX_UINT ((png_uint_32)0x7fffffffL)
+#define PNG_UINT_31_MAX ((png_uint_32)0x7fffffffL)
+#define PNG_UINT_32_MAX (~((png_uint_32)0))
+#define PNG_SIZE_MAX (~((png_size_t)0))
+/* PNG_MAX_UINT is deprecated; use PNG_UINT_31_MAX instead. */
+#define PNG_MAX_UINT PNG_UINT_31_MAX
 
 /* These describe the color_type field in png_info. */
 /* color type masks */
@@ -1275,13 +1301,21 @@ struct png_struct_def
                                      /* palette color */
 #endif
 
+/* New members added in libpng-1.0.16 and 1.2.6 */
+   png_byte compression_type;
+
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+   png_uint_32 user_width_max;
+   png_uint_32 user_height_max;
+#endif
+
 };
 
 
-/* This prevents a compiler error in png.c if png.c and png.h are both at
-   version 1.2.4
+/* This triggers a compiler error in png.c, if png.c and png.h
+ * do not agree upon the version number.
  */
-typedef png_structp version_1_2_4;
+typedef png_structp version_1_2_7;
 
 typedef png_struct FAR * FAR * png_structpp;
 
@@ -1323,11 +1357,15 @@ 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));
@@ -1366,7 +1404,8 @@ extern PNG_EXPORT(png_infop,png_create_info_struct)
 /* 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, sizeof(png_info));
+#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));
 
@@ -1376,9 +1415,11 @@ extern PNG_EXPORT(void,png_write_info_before_PLTE) PNGARG((png_structp png_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)
@@ -1446,12 +1487,17 @@ extern PNG_EXPORT(void,png_set_invert_alpha) PNGARG((png_structp png_ptr));
 #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)
@@ -1541,18 +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));
 
+#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
 
+#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,
@@ -1570,9 +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,
@@ -2344,6 +2398,12 @@ 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 */
@@ -2372,7 +2432,6 @@ extern PNG_EXPORT(png_uint_32,png_permit_mng_features) PNGARG((png_structp
 #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)
@@ -2416,12 +2475,20 @@ extern PNG_EXPORT(int,png_mmx_support) PNGARG((void));
 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 */
 
-/* Maintainer: Put new public prototypes here ^, in libpng.3, and project defs */
+/* 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
 
-#define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.2.4 - July 8, 2002 (header)\n"
+/* 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
@@ -2514,6 +2581,7 @@ extern PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp
 #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
@@ -2548,12 +2616,6 @@ extern PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp
 #define PNG_FLAG_STRIP_ERROR_TEXT         0x80000L
 #define PNG_FLAG_MALLOC_NULL_MEM_OK       0x100000L
 
-/* For use in png_set_keep_unknown, png_handle_as_unknown */
-#define HANDLE_CHUNK_AS_DEFAULT   0
-#define HANDLE_CHUNK_NEVER        1
-#define HANDLE_CHUNK_IF_SAFE      2
-#define HANDLE_CHUNK_ALWAYS       3
-
 #define PNG_FLAG_CRC_ANCILLARY_MASK (PNG_FLAG_CRC_ANCILLARY_USE | \
                                      PNG_FLAG_CRC_ANCILLARY_NOWARN)
 
@@ -2564,10 +2626,24 @@ extern PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp
                                      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. */
@@ -2650,14 +2726,19 @@ PNG_EXTERN png_int_32 png_get_int_32 PNGARG((png_bytep buf));
 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 */
-
+/* 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 - DEPRECATED - use png_create_read_struct instead).
  */
 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,  sizeof(png_struct));
+    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,
@@ -2670,7 +2751,7 @@ extern PNG_EXPORT(void,png_read_init_2) PNGARG((png_structp png_ptr,
 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, sizeof(png_struct));
+    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,
@@ -2699,6 +2780,11 @@ PNG_EXTERN voidpf png_zalloc PNGARG((voidpf png_ptr, uInt items, uInt size));
 /* Function to free memory for zlib */
 PNG_EXTERN void png_zfree PNGARG((voidpf png_ptr, voidpf ptr));
 
+#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. */