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_IMAGE_H__

    29 #define __VS_IMAGE_H__

    30 //#include <liboil/liboil-stdint.h>

    31 

    32 typedef unsigned char uint8_t;

    33 

    34 typedef struct _VSImage VSImage;

    35 

    36 struct _VSImage {

    37   uint8_t *pixels;

    38   int width;

    39   int height;

    40   int stride;

    41 };

    42 

    43 void vs_image_scale_nearest_RGBA (const VSImage *dest, const VSImage *src,

    44     uint8_t *tmpbuf);

    45 void vs_image_scale_linear_RGBA (const VSImage *dest, const VSImage *src,

    46     uint8_t *tmpbuf);

    47 

    48 void vs_image_scale_nearest_RGB (const VSImage *dest, const VSImage *src,

    49     uint8_t *tmpbuf);

    50 void vs_image_scale_linear_RGB (const VSImage *dest, const VSImage *src,

    51     uint8_t *tmpbuf);

    52 

    53 void vs_image_scale_nearest_YUYV (const VSImage *dest, const VSImage *src,

    54     uint8_t *tmpbuf);

    55 void vs_image_scale_linear_YUYV (const VSImage *dest, const VSImage *src,

    56     uint8_t *tmpbuf);

    57 

    58 void vs_image_scale_nearest_UYVY (const VSImage *dest, const VSImage *src,

    59     uint8_t *tmpbuf);

    60 void vs_image_scale_linear_UYVY (const VSImage *dest, const VSImage *src,

    61     uint8_t *tmpbuf);

    62 

    63 void vs_image_scale_nearest_Y (const VSImage *dest, const VSImage *src,

    64     uint8_t *tmpbuf);

    65 void vs_image_scale_linear_Y (const VSImage *dest, const VSImage *src,

    66     uint8_t *tmpbuf);

    67 

    68 void vs_image_scale_nearest_RGB565 (const VSImage *dest, const VSImage *src,

    69     uint8_t *tmpbuf);

    70 void vs_image_scale_linear_RGB565 (const VSImage *dest, const VSImage *src,

    71     uint8_t *tmpbuf);

    72 

    73 void vs_image_scale_nearest_RGB555 (const VSImage *dest, const VSImage *src,

    74     uint8_t *tmpbuf);

    75 void vs_image_scale_linear_RGB555 (const VSImage *dest, const VSImage *src,

    76     uint8_t *tmpbuf);

    77 

    78 #endif

    79