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Imported from libpng-1.4.0beta20.tar

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This commit is contained in:
Glenn Randers-Pehrson
2008-07-10 09:13:13 -05:00
parent a7dbcba1e8
commit 145f5c8164
62 changed files with 2945 additions and 11047 deletions
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20
example.c
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@@ -2,9 +2,9 @@
#if 0 /* in case someone actually tries to compile this */
/* example.c - an example of using libpng
* Last changed in libpng 1.2.1 December 7, 2001.
* Last changed in libpng 1.4.0 [July 10, 2008]
* This file has been placed in the public domain by the authors.
* Maintained 1998-2001 Glenn Randers-Pehrson
* Maintained 1998-2008 Glenn Randers-Pehrson
* Maintained 1996, 1997 Andreas Dilger)
* Written 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*/
@@ -70,7 +70,7 @@ int check_if_png(char *file_name, FILE **fp)
/* Compare the first PNG_BYTES_TO_CHECK bytes of the signature.
Return nonzero (true) if they match */
return(!png_sig_cmp(buf, 0, PNG_BYTES_TO_CHECK));
return(!png_sig_cmp(buf, (png_size_t)0, PNG_BYTES_TO_CHECK));
}
/* Read a PNG file. You may want to return an error code if the read
@@ -367,9 +367,11 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */
for (y = 0; y < height; y += number_of_rows)
{
#ifdef sparkle /* Read the image using the "sparkle" effect. */
png_read_rows(png_ptr, &row_pointers[y], NULL, number_of_rows);
png_read_rows(png_ptr, &row_pointers[y], NULL,
number_of_rows);
#else no_sparkle /* Read the image using the "rectangle" effect */
png_read_rows(png_ptr, NULL, &row_pointers[y], number_of_rows);
png_read_rows(png_ptr, NULL, &row_pointers[y],
number_of_rows);
#endif no_sparkle /* use only one of these two methods */
}
@@ -503,7 +505,7 @@ row_callback(png_structp png_ptr, png_bytep new_row,
* shown below:
*/
/* Check if row_num is in bounds. */
if((row_num >= 0) && (row_num < height))
if ((row_num >= 0) && (row_num < height))
{
/* Get pointer to corresponding row in our
* PNG read buffer.
@@ -513,7 +515,7 @@ row_callback(png_structp png_ptr, png_bytep new_row,
/* If both rows are allocated then copy the new row
* data to the corresponding row data.
*/
if((old_row != NULL) && (new_row != NULL))
if ((old_row != NULL) && (new_row != NULL))
png_progressive_combine_row(png_ptr, old_row, new_row);
}
/*
@@ -635,7 +637,7 @@ void write_png(char *file_name /* , ... other image information ... */)
/* set the palette if there is one. REQUIRED for indexed-color images */
palette = (png_colorp)png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH
* sizeof (png_color));
* png_sizeof(png_color));
/* ... set palette colors ... */
png_set_PLTE(png_ptr, info_ptr, palette, PNG_MAX_PALETTE_LENGTH);
/* You must not free palette here, because png_set_PLTE only makes a link to
@@ -746,7 +748,7 @@ void write_png(char *file_name /* , ... other image information ... */)
png_byte image[height][width*bytes_per_pixel];
png_bytep row_pointers[height];
if (height > PNG_UINT_32_MAX/sizeof(png_bytep))
if (height > PNG_UINT_32_MAX/png_sizeof(png_bytep))
png_error (png_ptr, "Image is too tall to process in memory");
for (k = 0; k < height; k++)