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[wxWidgets.git] / src / png / pngwutil.c

diff --git a/src/png/pngwutil.c b/src/png/pngwutil.c
index 5f2464000fa5d437c039bd6938ed9457b499e9d6..17938d227888a20e5cdec8f85cd961b496eba5bf 100644 (file)
--- a/src/png/pngwutil.c
+++ b/src/png/pngwutil.c
@@ -1,7 +1,7 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * libpng version 1.2.6 - August 15, 2004
+ * libpng version 1.2.7 - September 12, 2004
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2004 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -617,8 +617,8 @@ png_write_IDAT(png_structp png_ptr, png_bytep data, png_size_t length)
              png_ptr->height < 16384 && png_ptr->width < 16384)
          {
             png_uint_32 uncompressed_idat_size = png_ptr->height *
-               (PNG_ROWBYTES(png_ptr->channels*png_ptr->bit_depth,
-                  png_ptr->channels * png_ptr->bit_depth + 15) >> 3);
+               ((png_ptr->width *
+               png_ptr->channels * png_ptr->bit_depth + 15) >> 3);
             unsigned int z_cinfo = z_cmf >> 4;
             unsigned int half_z_window_size = 1 << (z_cinfo + 7);
             while (uncompressed_idat_size <= half_z_window_size &&
@@ -1556,6 +1556,7 @@ png_write_sCAL(png_structp png_ptr, int unit, double width,double height)
 #endif
    png_size_t total_len;
    char wbuf[32], hbuf[32];
+   png_byte bunit = unit;
 
    png_debug(1, "in png_write_sCAL\n");
 
@@ -1576,7 +1577,7 @@ png_write_sCAL(png_structp png_ptr, int unit, double width,double height)
 
    png_debug1(3, "sCAL total length = %d\n", (int)total_len);
    png_write_chunk_start(png_ptr, (png_bytep)png_sCAL, (png_uint_32)total_len);
-   png_write_chunk_data(png_ptr, (png_bytep)&unit, 1);
+   png_write_chunk_data(png_ptr, (png_bytep)&bunit, 1);
    png_write_chunk_data(png_ptr, (png_bytep)wbuf, png_strlen(wbuf)+1);
    png_write_chunk_data(png_ptr, (png_bytep)hbuf, png_strlen(hbuf));
 
@@ -1593,6 +1594,7 @@ png_write_sCAL_s(png_structp png_ptr, int unit, png_charp width,
 #endif
    png_size_t total_len;
    char wbuf[32], hbuf[32];
+   png_byte bunit = unit;
 
    png_debug(1, "in png_write_sCAL_s\n");
 
@@ -1602,7 +1604,7 @@ png_write_sCAL_s(png_structp png_ptr, int unit, png_charp width,
 
    png_debug1(3, "sCAL total length = %d\n", total_len);
    png_write_chunk_start(png_ptr, (png_bytep)png_sCAL, (png_uint_32)total_len);
-   png_write_chunk_data(png_ptr, (png_bytep)&unit, 1);
+   png_write_chunk_data(png_ptr, (png_bytep)&bunit, 1);
    png_write_chunk_data(png_ptr, (png_bytep)wbuf, png_strlen(wbuf)+1);
    png_write_chunk_data(png_ptr, (png_bytep)hbuf, png_strlen(hbuf));