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99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
/* Libart_LGPL - library of basic graphic primitives
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* Copyright (C) 1998 Raph Levien
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __ART_PIXBUF_H__
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#define __ART_PIXBUF_H__
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/* A generic data structure for holding a buffer of pixels. One way
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to think about this module is as a virtualization over specific
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pixel buffer formats. */
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef void (*ArtDestroyNotify) (void *func_data, void *data);
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typedef struct _ArtPixBuf ArtPixBuf;
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typedef enum {
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ART_PIX_RGB
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/* gray, cmyk, lab, ... ? */
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} ArtPixFormat;
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/* The pixel buffer consists of width * height pixels, each of which
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has n_channels samples. It is stored in simple packed format. */
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struct _ArtPixBuf {
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/*< public >*/
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ArtPixFormat format;
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int n_channels;
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int has_alpha;
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int bits_per_sample;
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art_u8 *pixels;
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int width;
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int height;
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int rowstride;
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void *destroy_data;
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ArtDestroyNotify destroy;
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};
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/* allocate an ArtPixBuf from art_alloc()ed pixels (automated destruction) */
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ArtPixBuf *
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art_pixbuf_new_rgb (art_u8 *pixels, int width, int height, int rowstride);
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ArtPixBuf *
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art_pixbuf_new_rgba (art_u8 *pixels, int width, int height, int rowstride);
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/* allocate an ArtPixBuf from constant pixels (no destruction) */
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ArtPixBuf *
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art_pixbuf_new_const_rgb (const art_u8 *pixels, int width, int height, int rowstride);
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ArtPixBuf *
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art_pixbuf_new_const_rgba (const art_u8 *pixels, int width, int height, int rowstride);
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/* allocate an ArtPixBuf and notify creator upon destruction */
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ArtPixBuf *
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art_pixbuf_new_rgb_dnotify (art_u8 *pixels, int width, int height, int rowstride,
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void *dfunc_data, ArtDestroyNotify dfunc);
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ArtPixBuf *
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art_pixbuf_new_rgba_dnotify (art_u8 *pixels, int width, int height, int rowstride,
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void *dfunc_data, ArtDestroyNotify dfunc);
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/* free an ArtPixBuf with destroy notification */
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void
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art_pixbuf_free (ArtPixBuf *pixbuf);
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/* deprecated function, use the _dnotify variants for allocation instead */
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void
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art_pixbuf_free_shallow (ArtPixBuf *pixbuf);
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ArtPixBuf *
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art_pixbuf_duplicate (const ArtPixBuf *pixbuf);
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#ifdef __cplusplus
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}
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#endif
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#endif
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