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Imported from libpng-0.99a.tar

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This commit is contained in:
Glenn Randers-Pehrson
1998-01-31 20:07:59 -06:00
parent 46f61e2398
commit b212002101
21 changed files with 92 additions and 88 deletions
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18
pngrutil.c
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@@ -1,12 +1,12 @@
/* pngrutil.c - utilities to read a PNG file
*
* libpng 0.99
* libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998
* January 31, 1998
*
* This file contains routines which are only called from within
* libpng itself during the course of reading an image.
@@ -27,7 +27,7 @@ png_get_uint_32(png_bytep buf)
((png_uint_32)(*(buf + 2)) << 8) +
(png_uint_32)(*(buf + 3));
return i;
return (i);
}
#if defined(PNG_READ_pCAL_SUPPORTED)
@@ -44,7 +44,7 @@ png_get_int_32(png_bytep buf)
((png_int_32)(*(buf + 2)) << 8) +
(png_int_32)(*(buf + 3));
return i;
return (i);
}
#endif /* PNG_READ_pCAL_SUPPORTED */
@@ -57,7 +57,7 @@ png_get_uint_16(png_bytep buf)
i = (png_uint_16)(((png_uint_16)(*buf) << 8) +
(png_uint_16)(*(buf + 1)));
return i;
return (i);
}
#endif /* PNG_READ_BIG_ENDIAN_SUPPORTED */
@@ -100,10 +100,10 @@ png_crc_finish(png_structp png_ptr, png_uint_32 skip)
{
png_chunk_error(png_ptr, "CRC error");
}
return 1;
return (1);
}
return 0;
return (0);
}
/* Compare the CRC stored in the PNG file with that calculated by libpng from
@@ -132,10 +132,10 @@ png_crc_error(png_structp png_ptr)
if (need_crc)
{
crc = png_get_uint_32(crc_bytes);
return (crc != png_ptr->crc);
return ((int)(crc != png_ptr->crc));
}
else
return 0;
return (0);
}