#ifndef TGA_INC_CPP

#define TGA_INC_CPP

#include <cstdio></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;

  const unsigned char *row = data + h*rowSize;

  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