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Imported from libpng-1.2.1beta2.tar

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This commit is contained in:
Glenn Randers-Pehrson
2001-10-24 22:01:19 -05:00
parent 5a0be341ba
commit 6c97ddbffc
55 changed files with 267 additions and 131 deletions
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16
example.c
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@@ -157,7 +157,7 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */
* adjustment), then you can read the entire image (including
* pixels) into the info structure with this call:
*/
png_read_png(png_ptr, info_ptr, png_transforms, NULL);
png_read_png(png_ptr, info_ptr, png_transforms, (png_voidp)NULL);
#else
/* OK, you're doing it the hard way, with the lower-level functions */
@@ -167,7 +167,7 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */
png_read_info(png_ptr, info_ptr);
png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type,
&interlace_type, NULL, NULL);
&interlace_type, (int *)NULL, (int *)NULL);
/**** Set up the data transformations you want. Note that these are all
**** optional. Only call them if you want/need them. Many of the
@@ -277,7 +277,7 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */
png_color std_color_cube[MAX_SCREEN_COLORS];
png_set_dither(png_ptr, std_color_cube, MAX_SCREEN_COLORS,
MAX_SCREEN_COLORS, NULL, 0);
MAX_SCREEN_COLORS, (png_uint_16p)NULL, 0);
}
/* This reduces the image to the palette supplied in the file */
else if (png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette))
@@ -354,16 +354,18 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */
#ifdef single /* Read the image a single row at a time */
for (y = 0; y < height; y++)
{
png_read_rows(png_ptr, &row_pointers[y], NULL, 1);
png_read_rows(png_ptr, &row_pointers[y], (png_bytepp)NULL, 1);
}
#else no_single /* Read the image several rows at a time */
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], (png_bytepp)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, (png_bytepp)NULL, &row_pointers[y],
number_of_rows);
#endif no_sparkle /* use only one of these two methods */
}
@@ -612,7 +614,7 @@ void write_png(char *file_name /* , ... other image information ... */)
* image info living info in the structure. You could "|" many
* PNG_TRANSFORM flags into the png_transforms integer here.
*/
png_write_png(png_ptr, info_ptr, png_transforms, NULL);
png_write_png(png_ptr, info_ptr, png_transforms, (png_voidp)NULL);
#else
/* This is the hard way */