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gdk_pixbuf__png_image_save: removed wrong endian conversion stuff; don't

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2001-12-11  Michael Natterer  <mitch@gimp.org>

	* io-png.c: gdk_pixbuf__png_image_save: removed wrong endian
	conversion stuff; don't copy RGB pixbufs' lines around before
	saving them.
This commit is contained in:
Michael Natterer
2001-12-11 17:30:53 +00:00
committed by Michael Natterer
parent 8157885492
commit 3339931f8f
2 changed files with 9 additions and 36 deletions
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6
gdk-pixbuf/ChangeLog
View File

@ -1,3 +1,9 @@
2001-12-11 Michael Natterer <mitch@gimp.org>
* io-png.c: gdk_pixbuf__png_image_save: removed wrong endian
conversion stuff; don't copy RGB pixbufs' lines around before
saving them.
2001-12-05 Matthias Clasen <matthiasc@poet.de> 2001-12-05 Matthias Clasen <matthiasc@poet.de>
* gdk-pixbuf.h (gdk_pixbuf_ref, gdk_pixbuf_unref, * gdk-pixbuf.h (gdk_pixbuf_ref, gdk_pixbuf_unref,

39
gdk-pixbuf/io-png.c
View File

@ -720,10 +720,9 @@ gdk_pixbuf__png_image_save (FILE *f,
png_textp text_ptr = NULL; png_textp text_ptr = NULL;
guchar *ptr; guchar *ptr;
guchar *pixels; guchar *pixels;
int x, y; int y;
int i, j; int i;
png_bytep row_ptr; png_bytep row_ptr;
png_bytep data;
png_color_8 sig_bit; png_color_8 sig_bit;
int w, h, rowstride; int w, h, rowstride;
int has_alpha; int has_alpha;
@ -787,8 +786,6 @@ gdk_pixbuf__png_image_save (FILE *f,
} }
} }
data = NULL;
bpc = gdk_pixbuf_get_bits_per_sample (pixbuf); bpc = gdk_pixbuf_get_bits_per_sample (pixbuf);
w = gdk_pixbuf_get_width (pixbuf); w = gdk_pixbuf_get_width (pixbuf);
h = gdk_pixbuf_get_height (pixbuf); h = gdk_pixbuf_get_height (pixbuf);
@ -823,30 +820,10 @@ gdk_pixbuf__png_image_save (FILE *f,
png_set_IHDR (png_ptr, info_ptr, w, h, bpc, png_set_IHDR (png_ptr, info_ptr, w, h, bpc,
PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE, PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
#ifdef WORDS_BIGENDIAN
png_set_swap_alpha (png_ptr);
#else
png_set_bgr (png_ptr);
#endif
} else { } else {
png_set_IHDR (png_ptr, info_ptr, w, h, bpc, png_set_IHDR (png_ptr, info_ptr, w, h, bpc,
PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE, PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
data = g_try_malloc (w * 3 * sizeof (char));
if (data == NULL) {
/* Check error NULL, normally this would be broken,
* but libpng makes me want to code defensively.
*/
if (error && *error == NULL) {
g_set_error (error,
GDK_PIXBUF_ERROR,
GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY,
_("Insufficient memory to save PNG file"));
}
png_destroy_write_struct (&png_ptr, (png_infopp) NULL);
return FALSE;
}
} }
sig_bit.red = bpc; sig_bit.red = bpc;
sig_bit.green = bpc; sig_bit.green = bpc;
@ -859,21 +836,11 @@ gdk_pixbuf__png_image_save (FILE *f,
ptr = pixels; ptr = pixels;
for (y = 0; y < h; y++) { for (y = 0; y < h; y++) {
if (has_alpha) row_ptr = (png_bytep)ptr;
row_ptr = (png_bytep)ptr;
else {
for (j = 0, x = 0; x < w; x++)
memcpy (&(data[x*3]), &(ptr[x*3]), 3);
row_ptr = (png_bytep)data;
}
png_write_rows (png_ptr, &row_ptr, 1); png_write_rows (png_ptr, &row_ptr, 1);
ptr += rowstride; ptr += rowstride;
} }
if (data)
g_free (data);
png_write_end (png_ptr, info_ptr); png_write_end (png_ptr, info_ptr);
png_destroy_write_struct (&png_ptr, (png_infopp) NULL); png_destroy_write_struct (&png_ptr, (png_infopp) NULL);