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__
34 G_GNUC_INTERNAL void vs_scanline_downsample_Y (uint8_t *dest, uint8_t *src, int n);
35 G_GNUC_INTERNAL void vs_scanline_resample_nearest_Y (uint8_t *dest, uint8_t *src, int n, int src_width, int *accumulator, int increment);
36 G_GNUC_INTERNAL void vs_scanline_resample_linear_Y (uint8_t *dest, uint8_t *src, int n, int src_width, int *accumulator, int increment);
37 G_GNUC_INTERNAL void vs_scanline_merge_linear_Y (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x);
39 G_GNUC_INTERNAL void vs_scanline_downsample_RGBA (uint8_t *dest, uint8_t *src, int n);
40 G_GNUC_INTERNAL void vs_scanline_resample_nearest_RGBA (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
41 G_GNUC_INTERNAL void vs_scanline_resample_linear_RGBA (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
42 G_GNUC_INTERNAL void vs_scanline_merge_linear_RGBA (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x);
44 G_GNUC_INTERNAL void vs_scanline_downsample_RGB (uint8_t *dest, uint8_t *src, int n);
45 G_GNUC_INTERNAL void vs_scanline_resample_nearest_RGB (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
46 G_GNUC_INTERNAL void vs_scanline_resample_linear_RGB (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
47 G_GNUC_INTERNAL void vs_scanline_merge_linear_RGB (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x);
49 G_GNUC_INTERNAL void vs_scanline_downsample_YUYV (uint8_t *dest, uint8_t *src, int n);
50 G_GNUC_INTERNAL void vs_scanline_resample_nearest_YUYV (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
51 G_GNUC_INTERNAL void vs_scanline_resample_linear_YUYV (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
52 G_GNUC_INTERNAL void vs_scanline_merge_linear_YUYV (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x);
54 G_GNUC_INTERNAL void vs_scanline_downsample_UYVY (uint8_t *dest, uint8_t *src, int n);
55 G_GNUC_INTERNAL void vs_scanline_resample_nearest_UYVY (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
56 G_GNUC_INTERNAL void vs_scanline_resample_linear_UYVY (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
57 G_GNUC_INTERNAL void vs_scanline_merge_linear_UYVY (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x);
59 G_GNUC_INTERNAL void vs_scanline_downsample_NV12 (uint8_t *dest, uint8_t *src, int n);
60 G_GNUC_INTERNAL void vs_scanline_resample_nearest_NV12 (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
61 G_GNUC_INTERNAL void vs_scanline_resample_linear_NV12 (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
62 G_GNUC_INTERNAL void vs_scanline_merge_linear_NV12 (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x);
64 G_GNUC_INTERNAL void vs_scanline_downsample_RGB565 (uint8_t *dest, uint8_t *src, int n);
65 G_GNUC_INTERNAL void vs_scanline_resample_nearest_RGB565 (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
66 G_GNUC_INTERNAL void vs_scanline_resample_linear_RGB565 (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
67 G_GNUC_INTERNAL void vs_scanline_merge_linear_RGB565 (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x);
69 G_GNUC_INTERNAL void vs_scanline_downsample_RGB555 (uint8_t *dest, uint8_t *src, int n);
70 G_GNUC_INTERNAL void vs_scanline_resample_nearest_RGB555 (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
71 G_GNUC_INTERNAL void vs_scanline_resample_linear_RGB555 (uint8_t *dest, uint8_t *src, int src_width, int n, int *accumulator, int increment);
72 G_GNUC_INTERNAL void vs_scanline_merge_linear_RGB555 (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x);
74 G_GNUC_INTERNAL void vs_scanline_downsample_Y16 (uint8_t *dest, uint8_t *src, int n);
75 G_GNUC_INTERNAL void vs_scanline_resample_nearest_Y16 (uint8_t *dest, uint8_t *src, int n, int src_width, int *accumulator, int increment);
76 G_GNUC_INTERNAL void vs_scanline_resample_linear_Y16 (uint8_t *dest, uint8_t *src, int n, int src_width, int *accumulator, int increment);
77 G_GNUC_INTERNAL void vs_scanline_merge_linear_Y16 (uint8_t *dest, uint8_t *src1, uint8_t *src2, int n, int x);
79 G_GNUC_INTERNAL void vs_scanline_resample_nearest_AYUV64 (uint8_t * dest, uint8_t * src,
80 int src_width, int n, int *accumulator, int increment);
81 G_GNUC_INTERNAL void vs_scanline_resample_linear_AYUV64 (uint8_t * dest, uint8_t * src,
82 int src_width, int n, int *accumulator, int increment);