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Imported from libpng-1.4.0beta40.tar

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This commit is contained in:
Glenn Randers-Pehrson
2008-11-24 22:10:23 -06:00
parent 398b5a31a7
commit 02a5e33061
62 changed files with 178 additions and 249 deletions
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49
pngwutil.c
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@@ -1,7 +1,7 @@
/* pngwutil.c - utilities to write a PNG file
*
* Last changed in libpng 1.4.0 [November 23, 2008]
* Last changed in libpng 1.4.0 [November 25, 2008]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2008 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -995,34 +995,39 @@ png_write_cHRM(png_structp png_ptr, double white_x, double white_y,
PNG_cHRM;
#endif
png_byte buf[32];
png_uint_32 itemp;
png_fixed_point int_white_x, int_white_y, int_red_x, int_red_y,
int_green_x, int_green_y, int_blue_x, int_blue_y;
png_debug(1, "in png_write_cHRM");
/* each value is saved in 1/100,000ths */
if (png_check_cHRM(png_ptr, white_x, white_y, red_x, red_y,
green_x, green_y, blue_x, blue_y))
int_white_x = (png_uint_32)(white_x * 100000.0 + 0.5);
int_white_y = (png_uint_32)(white_y * 100000.0 + 0.5);
int_red_x = (png_uint_32)(red_x * 100000.0 + 0.5);
int_red_y = (png_uint_32)(red_y * 100000.0 + 0.5);
int_green_x = (png_uint_32)(green_x * 100000.0 + 0.5);
int_green_y = (png_uint_32)(green_y * 100000.0 + 0.5);
int_blue_x = (png_uint_32)(blue_x * 100000.0 + 0.5);
int_blue_y = (png_uint_32)(blue_y * 100000.0 + 0.5);
if (png_check_cHRM_fixed(png_ptr, int_white_x, int_white_y,
int_red_x, int_red_y, int_green_x, int_green_y, int_blue_x, int_blue_y))
{
itemp = (png_uint_32)(white_x * 100000.0 + 0.5);
png_save_uint_32(buf, itemp);
itemp = (png_uint_32)(white_y * 100000.0 + 0.5);
png_save_uint_32(buf + 4, itemp);
/* each value is saved in 1/100,000ths */
png_save_uint_32(buf, int_white_x);
png_save_uint_32(buf + 4, int_white_y);
itemp = (png_uint_32)(red_x * 100000.0 + 0.5);
png_save_uint_32(buf + 8, itemp);
itemp = (png_uint_32)(red_y * 100000.0 + 0.5);
png_save_uint_32(buf + 12, itemp);
png_save_uint_32(buf + 8, int_red_x);
png_save_uint_32(buf + 12, int_red_y);
itemp = (png_uint_32)(green_x * 100000.0 + 0.5);
png_save_uint_32(buf + 16, itemp);
itemp = (png_uint_32)(green_y * 100000.0 + 0.5);
png_save_uint_32(buf + 20, itemp);
png_save_uint_32(buf + 16, int_green_x);
png_save_uint_32(buf + 20, int_green_y);
itemp = (png_uint_32)(blue_x * 100000.0 + 0.5);
png_save_uint_32(buf + 24, itemp);
itemp = (png_uint_32)(blue_y * 100000.0 + 0.5);
png_save_uint_32(buf + 28, itemp);
png_save_uint_32(buf + 24, int_blue_x);
png_save_uint_32(buf + 28, int_blue_y);
png_write_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32);
png_write_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32);
}
}
#endif