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Imported from libpng-1.2.0beta4.tar

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This commit is contained in:
Glenn Randers-Pehrson
2001-06-23 08:03:17 -05:00
parent 8b6a889881
commit b182893c04
77 changed files with 419 additions and 10429 deletions
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8
example.c
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@@ -194,17 +194,17 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */
/* Expand paletted colors into true RGB triplets */
if (color_type == PNG_COLOR_TYPE_PALETTE)
png_set_expand(png_ptr);
png_set_palette_rgb(png_ptr);
/* Expand grayscale images to the full 8 bits from 1, 2, or 4 bits/pixel */
if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8)
png_set_expand(png_ptr);
png_set_gray_1_2_4_to_8(png_ptr);
/* Expand paletted or RGB images with transparency to full alpha channels
* so the data will be available as RGBA quartets.
*/
if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))
png_set_expand(png_ptr);
png_set_tRNS_to_alpha(png_ptr);
/* Set the background color to draw transparent and alpha images over.
* It is possible to set the red, green, and blue components directly
@@ -362,8 +362,6 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */
{
#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, NULL, row_pointers[y], 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);
#endif no_sparkle /* use only one of these two methods */