92 lines
2.9 KiB
C
92 lines
2.9 KiB
C
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/***************************************************************************
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gb.image.h
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(c) 2000-2007 Benoit Minisini <gambas@freesurf.fr>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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***************************************************************************/
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#ifndef __GB_IMAGE_H
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#define __GB_IMAGE_H
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#include "gambas.h"
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/* constants used by image data format */
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#define GB_IMAGE_BGRX 0 // 00000
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#define GB_IMAGE_XRGB 1 // 00001
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#define GB_IMAGE_RGBX 2 // 00010
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#define GB_IMAGE_XBGR 3 // 00011
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#define GB_IMAGE_BGR 4 // 00100
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#define GB_IMAGE_RGB 5 // 00101
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#define GB_IMAGE_BGRA 8 // 01000
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#define GB_IMAGE_ARGB 9 // 01001
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#define GB_IMAGE_RGBA 10 // 01010
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#define GB_IMAGE_ABGR 11 // 01011
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#define GB_IMAGE_BGRP 24 // 11000
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#define GB_IMAGE_PRGB 25 // 11001
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#define GB_IMAGE_RGBP 26 // 11010
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#define GB_IMAGE_PBGR 27 // 11011
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/* format test functions */
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#define GB_IMAGE_IS_TRANSPARENT(_format) ((_format) & 8)
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#define GB_IMAGE_IS_PREMULTIPLIED(_format) ((_format) & 16)
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#define GB_IMAGE_IS_24_BITS(_format) ((_format) & 4)
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#define GB_IMAGE_IS_32_BITS(_format) (((_format) & 4)) == 0)
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/* Gambas image type */
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typedef
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struct {
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const char *name; // name of the image type
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void (*free)(void *); // free the image
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void (*begin)(void *); // starts to modify the image contents
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void (*end)(void *); // ends modifying the image contents
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}
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GB_IMAGE_TYPE;
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/* Gambas image */
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typedef
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struct {
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GB_IMAGE_TYPE *type; // image type
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void *param; // argument that will be passed to image type functions
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unsigned char *data; // points at the image data
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int width; // image width in pixels
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int height; // image height in pixels
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int stride; // number of bytes by lines
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int format; // image format (RGB, BGR, RGBA...)
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}
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GB_IMAGE;
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/* Gambas image component interface */
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typedef
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struct {
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intptr_t version;
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void (*Convert)(GB_IMAGE *src, GB_IMAGE *dst);
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void (*MakeGray)(GB_IMAGE *img);
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void (*MakeTransparent)(GB_IMAGE *img);
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}
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IMAGE_INTERFACE;
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#endif
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