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/*
* Copyright (C) 2002 Steve Harris <steve@plugin.org.uk>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
*/
#ifndef GDITHER_TYPES_H
#define GDITHER_TYPES_H
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
#define GDITHER_SH_BUF_SIZE 8
#define GDITHER_SH_BUF_MASK 7
/* this must agree with whats in gdither_types.h */
typedef enum {
GDitherNone = 0,
GDitherRect,
GDitherTri,
GDitherShaped
} GDitherType;
typedef enum {
GDither8bit = 8,
GDither16bit = 16,
GDither32bit = 32,
GDitherFloat = 25,
GDitherDouble = 54
} GDitherSize;
typedef struct {
uint32_t phase;
float buffer[GDITHER_SH_BUF_SIZE];
} GDitherShapedState;
typedef struct GDither_s {
GDitherType type;
uint32_t channels;
uint32_t bit_depth;
uint32_t dither_depth;
float scale;
uint32_t post_scale;
float post_scale_fp;
float bias;
int clamp_u;
int clamp_l;
float *tri_state;
GDitherShapedState *shaped_state;
} *GDither;
#ifdef __cplusplus
}
#endif
#endif
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