#ifndef TGA_INC_CPP

#define TGA_INC_CPP

#include <cstdio>

bool tgaSave(const char *filename, const unsigned char *data, int w, int h, int ch) {

    if (!data || w <= 0 || h <= 0 || w > 0xffff || h > 0xffff || (ch != 3 && ch != 4)) {

        printf("ERROR: cannot save image (bad image): %s\n", filename);

        return false;

    }

    FILE *f = fopen(filename, "wb");

    if (!f) {

        printf("ERROR: cannot open file: %s\n", filename);

        return false;

    }

    #pragma pack(push,1)

    struct Header {

        unsigned char  idLength;

        unsigned char  colormapType;

        unsigned char  imageType;

        unsigned char  colormapIndex[2];

        unsigned char  colormapLength[2];

        unsigned char  colormapSize;

        unsigned char  xOrigin[2];

        unsigned char  yOrigin[2];

        unsigned char  width[2];

        unsigned char  height[2];

        unsigned char  pixelSize;

        unsigned char  attributes;

    };

    #pragma pack(pop)

    Header header = {};

    header.imageType = 2;

    header.width[0] = w;

    header.width[1] = w >> 8;

    header.height[0] = h;

    header.height[1] = h >> 8;

    header.pixelSize = ch == 4 ? 32 : 24;

    fwrite(&header, sizeof(header), 1, f);

    int rowSize = w*ch;

    int size = h*rowSize;

    const unsigned char *row = data + size;

    for(unsigned short r = h; r; --r, row -= rowSize) {

        for(const unsigned char *c = row - rowSize; c < row; c += ch) {

            fputc(c[2], f);

            fputc(c[1], f);

            fputc(c[0], f);

            if (ch == 4) fputc(c[3], f);

        }

    }

    fclose(f);

    return true;

}

#endif