2 * Image Scaling Functions
3 * Copyright (c) 2005 David A. Schleef <ds@schleef.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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.
28 #ifndef __VS_SCANLINE_H__
29 #define __VS_SCANLINE_H__
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 src_width, int *accumulator, int increment);
35 void vs_scanline_resample_linear_Y (uint8_t *dest, uint8_t *src, int n, int src_width, int *accumulator, int increment);
36 void vs_scanline_merge_linear_Y (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x);
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 src_width, int n, int *accumulator, int increment);
40 void vs_scanline_resample_linear_RGBA (uint8_t *dest, uint8_t *src, int src_width, 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);
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 src_width, int n, int *accumulator, int increment);
45 void vs_scanline_resample_linear_RGB (uint8_t *dest, uint8_t *src, int src_width, 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);
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 src_width, int n, int *accumulator, int increment);
50 void vs_scanline_resample_linear_YUYV (uint8_t *dest, uint8_t *src, int src_width, 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);
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 src_width, int n, int *accumulator, int increment);
55 void vs_scanline_resample_linear_UYVY (uint8_t *dest, uint8_t *src, int src_width, 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);
58 void vs_scanline_downsample_NV12 (uint8_t *dest, uint8_t *src, int n);
59 void vs_scanline_resample_nearest_NV12 (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
60 void vs_scanline_resample_linear_NV12 (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
61 void vs_scanline_merge_linear_NV12 (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x);
63 void vs_scanline_downsample_RGB565 (uint8_t *dest, uint8_t *src, int n);
64 void vs_scanline_resample_nearest_RGB565 (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
65 void vs_scanline_resample_linear_RGB565 (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
66 void vs_scanline_merge_linear_RGB565 (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x);
68 void vs_scanline_downsample_RGB555 (uint8_t *dest, uint8_t *src, int n);
69 void vs_scanline_resample_nearest_RGB555 (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
70 void vs_scanline_resample_linear_RGB555 (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
71 void vs_scanline_merge_linear_RGB555 (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x);
73 void vs_scanline_downsample_Y16 (uint8_t *dest, uint8_t *src, int n);
74 void vs_scanline_resample_nearest_Y16 (uint8_t *dest, uint8_t *src, int n, int src_width, int *accumulator, int increment);
75 void vs_scanline_resample_linear_Y16 (uint8_t *dest, uint8_t *src, int n, int src_width, int *accumulator, int increment);
76 void vs_scanline_merge_linear_Y16 (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x);
78 void vs_scanline_resample_nearest_AYUV64 (uint8_t * dest, uint8_t * src,
79 int src_width, int n, int *accumulator, int increment);
80 void vs_scanline_resample_linear_AYUV64 (uint8_t * dest, uint8_t * src,
81 int src_width, int n, int *accumulator, int increment);