gtk/gdk-pixbuf/gdk-pixbuf-data.c
Matthias Clasen 45f7541f42 Support for separately installed loaders. (#77486)
* Makefile.am gdk-pixbuf-animation.c gdk-pixbuf-data.c
	gdk-pixbuf-io.c gdk-pixbuf-io.h gdk-pixbuf-loader.c
	gdk-pixbuf-loader.h gdk-pixbuf-private.h gdk-pixbuf.h
	gdk-pixdata.c io-ani-animation.h io-ani.c io-bmp.c
	io-gif-animation.c io-gif-animation.h io-gif.c io-ico.c
	io-jpeg.c io-png.c io-pnm.c io-ras.c io-tga.c io-tiff.c
	io-wbmp.c io-xbm.c io-xpm.c pixbufloader_ani.def
	pixbufloader_bmp.def pixbufloader_gif.def pixbufloader_ico.def
	pixbufloader_jpeg.def pixbufloader_png.def
	pixbufloader_pnm.def pixbufloader_ras.def pixbufloader_tga.def
	pixbufloader_tiff.def pixbufloader_wbmp.def
	pixbufloader_xbm.def pixbufloader_xpm.def test-gdk-pixbuf.c
	gdk-pixbuf-animation.h queryloaders.c: Support for separately
	installed loaders.  (#77486)
2002-10-03 22:39:51 +00:00

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/* GdkPixbuf library - Image creation from in-memory buffers
*
* Copyright (C) 1999 The Free Software Foundation
*
* Author: Federico Mena-Quintero <federico@gimp.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include "gdk-pixbuf.h"
#include "gdk-pixbuf-private.h"
#include <stdlib.h>
#include <string.h>
/**
* gdk_pixbuf_new_from_data:
* @data: Image data in 8-bit/sample packed format.
* @colorspace: Colorspace for the image data.
* @has_alpha: Whether the data has an opacity channel.
* @bits_per_sample: Number of bits per sample.
* @width: Width of the image in pixels.
* @height: Height of the image in pixels.
* @rowstride: Distance in bytes between rows.
* @destroy_fn: Function used to free the data when the pixbuf's reference count
* drops to zero, or %NULL if the data should not be freed.
* @destroy_fn_data: Closure data to pass to the destroy notification function.
*
* Creates a new #GdkPixbuf out of in-memory image data. Currently only RGB
* images with 8 bits per sample are supported.
*
* Return value: A newly-created #GdkPixbuf structure with a reference count of
* 1.
**/
GdkPixbuf *
gdk_pixbuf_new_from_data (const guchar *data, GdkColorspace colorspace, gboolean has_alpha,
int bits_per_sample, int width, int height, int rowstride,
GdkPixbufDestroyNotify destroy_fn, gpointer destroy_fn_data)
{
GdkPixbuf *pixbuf;
/* Only 8-bit/sample RGB buffers are supported for now */
g_return_val_if_fail (data != NULL, NULL);
g_return_val_if_fail (colorspace == GDK_COLORSPACE_RGB, NULL);
g_return_val_if_fail (bits_per_sample == 8, NULL);
g_return_val_if_fail (width > 0, NULL);
g_return_val_if_fail (height > 0, NULL);
pixbuf = g_object_new (GDK_TYPE_PIXBUF, NULL);
pixbuf->colorspace = colorspace;
pixbuf->n_channels = has_alpha ? 4 : 3;
pixbuf->bits_per_sample = bits_per_sample;
pixbuf->has_alpha = has_alpha ? TRUE : FALSE;
pixbuf->width = width;
pixbuf->height = height;
pixbuf->rowstride = rowstride;
pixbuf->pixels = (guchar *) data;
pixbuf->destroy_fn = destroy_fn;
pixbuf->destroy_fn_data = destroy_fn_data;
return pixbuf;
}