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45 lines
1.8 KiB
C
45 lines
1.8 KiB
C
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/*
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* Image Scaling Functions (4 tap)
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* Copyright (c) 2005 David A. Schleef <ds@schleef.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _VS_4TAP_H_
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#define _VS_4TAP_H_
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#include "vs_image.h"
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#include <liboil/liboil.h>
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void vs_4tap_init (void);
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void vs_scanline_resample_4tap_Y (uint8_t *dest, uint8_t *src,
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int n, int *xacc, int increment);
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void vs_scanline_merge_4tap_Y (uint8_t *dest, uint8_t *src1, uint8_t *src2,
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uint8_t *src3, uint8_t *src4, int n, int acc);
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void vs_image_scale_4tap_Y (const VSImage * dest, const VSImage * src,
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uint8_t * tmpbuf);
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#endif
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