image_types.h

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/* Copyright (C) 2013-2016, The Regents of The University of Michigan.
All rights reserved.
This software was developed in the APRIL Robotics Lab under the
direction of Edwin Olson, ebolson@umich.edu. This software may be
available under alternative licensing terms; contact the address above.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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The views and conclusions contained in the software and documentation are those
of the authors and should not be interpreted as representing official policies,
either expressed or implied, of the Regents of The University of Michigan.
*/
 
#pragma once
 
#include <stdint.h>
 
// to support conversions between different types, we define all image
// types at once. Type-specific implementations can then #include this
// file, assured that the basic types of each image are known.
 
typedef struct image_u8 image_u8_t;
struct image_u8
{
    const int32_t width;
    const int32_t height;
    const int32_t stride;
 
    uint8_t *buf;
};
 
typedef struct image_u8x3 image_u8x3_t;
struct image_u8x3
{
    const int32_t width;
    const int32_t height;
    const int32_t stride; // bytes per line
 
    uint8_t *buf;
};
 
typedef struct image_u8x4 image_u8x4_t;
struct image_u8x4
{
    const int32_t width;
    const int32_t height;
    const int32_t stride; // bytes per line
 
    uint8_t *buf;
};
 
typedef struct image_f32 image_f32_t;
struct image_f32
{
    const int32_t width;
    const int32_t height;
    const int32_t stride; // floats per line
 
    float *buf; // indexed as buf[y*stride + x]
};
 
typedef struct image_u32 image_u32_t;
struct image_u32
{
    const int32_t width;
    const int32_t height;
    const int32_t stride; // int32_ts per line
 
    uint32_t *buf; // indexed as buf[y*stride + x]
};