1 /* 2 * Image Scaling Functions 3 * Copyright (c) 2005 David A. Schleef <ds@schleef.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef __VS_SCANLINE_H__ 29 #define __VS_SCANLINE_H__ 30 31 #include <liboil/liboil-stdint.h> 32 33 void vs_scanline_downsample_Y (uint8_t *dest, uint8_t *src, int n); 34 void vs_scanline_resample_nearest_Y (uint8_t *dest, uint8_t *src, int n, int *accumulator, int increment); 35 void vs_scanline_resample_linear_Y (uint8_t *dest, uint8_t *src, int n, int *accumulator, int increment); 36 void vs_scanline_merge_linear_Y (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x); 37 38 void vs_scanline_downsample_RGBA (uint8_t *dest, uint8_t *src, int n); 39 void vs_scanline_resample_nearest_RGBA (uint8_t *dest, uint8_t *src, int n, int *accumulator, int increment); 40 void vs_scanline_resample_linear_RGBA (uint8_t *dest, uint8_t *src, int n, int *accumulator, int increment); 41 void vs_scanline_merge_linear_RGBA (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x); 42 43 void vs_scanline_downsample_RGB (uint8_t *dest, uint8_t *src, int n); 44 void vs_scanline_resample_nearest_RGB (uint8_t *dest, uint8_t *src, int n, int *accumulator, int increment); 45 void vs_scanline_resample_linear_RGB (uint8_t *dest, uint8_t *src, int n, int *accumulator, int increment); 46 void vs_scanline_merge_linear_RGB (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x); 47 48 void vs_scanline_downsample_YUYV (uint8_t *dest, uint8_t *src, int n); 49 void vs_scanline_resample_nearest_YUYV (uint8_t *dest, uint8_t *src, int n, int *accumulator, int increment); 50 void vs_scanline_resample_linear_YUYV (uint8_t *dest, uint8_t *src, int n, int *accumulator, int increment); 51 void vs_scanline_merge_linear_YUYV (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x); 52 53 void vs_scanline_downsample_UYVY (uint8_t *dest, uint8_t *src, int n); 54 void vs_scanline_resample_nearest_UYVY (uint8_t *dest, uint8_t *src, int n, int *accumulator, int increment); 55 void vs_scanline_resample_linear_UYVY (uint8_t *dest, uint8_t *src, int n, int *accumulator, int increment); 56 void vs_scanline_merge_linear_UYVY (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x); 57 58 void vs_scanline_downsample_RGB565 (uint8_t *dest, uint8_t *src, int n); 59 void vs_scanline_resample_nearest_RGB565 (uint8_t *dest, uint8_t *src, int n, int *accumulator, int increment); 60 void vs_scanline_resample_linear_RGB565 (uint8_t *dest, uint8_t *src, int n, int *accumulator, int increment); 61 void vs_scanline_merge_linear_RGB565 (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x); 62 63 void vs_scanline_downsample_RGB555 (uint8_t *dest, uint8_t *src, int n); 64 void vs_scanline_resample_nearest_RGB555 (uint8_t *dest, uint8_t *src, int n, int *accumulator, int increment); 65 void vs_scanline_resample_linear_RGB555 (uint8_t *dest, uint8_t *src, int n, int *accumulator, int increment); 66 void vs_scanline_merge_linear_RGB555 (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x); 67 68 69 #endif 70 71