/*  Starshatter: The Open Source Project
    Copyright (c) 2021-2024, Starshatter: The Open Source Project Contributors
    Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
    Copyright (c) 1997-2006, Destroyer Studios LLC.

    AUTHOR:       John DiCamillo


    OVERVIEW
    ========
    BMP image file loader
*/

#ifndef BMP_H
#define BMP_H

#include "Types.h"

// +--------------------------------------------------------------------+

enum { BMP_OK, BMP_NOMEM, BMP_INVALID, BMP_NOFILE };

struct BmpFileHeader
{
    WORD  type;
    DWORD size;
    WORD  rsvd1;
    WORD  rsvd2;
    DWORD offset;
};

struct BmpInfoHeader
{
    DWORD hdr_size;
    DWORD width;
    DWORD height;
    WORD  planes;
    WORD  bit_count;
    DWORD compression;
    DWORD img_size;
    DWORD x_pixels_per_meter;
    DWORD y_pixels_per_meter;
    DWORD colors_used;
    DWORD colors_important;
};

const int BMP_FILE_HDR_SIZE = 14;
const int BMP_INFO_HDR_SIZE = 40;

// +--------------------------------------------------------------------+

struct BmpImage
{
    static const char* TYPENAME() { return "BmpImage"; }

    BmpImage(short w, short h, unsigned long* hibits);

    BmpImage();
    ~BmpImage();

    int Load(char *filename);
    int Save(char *filename);

    int LoadBuffer(unsigned char* buf, int len);

    BmpFileHeader  file_hdr;
    BmpInfoHeader  info_hdr;
    DWORD          palette[256];
    DWORD*         image;
    WORD           width;
    WORD           height;
};

// +--------------------------------------------------------------------+


#endif  // BMP_H