Function lodepng_error_text

src/lodepng.cpp:5926–6027

This returns the description of a numerical error code in English. This is also the documentation of all the error codes. */

the documentation of all the error codes.
*/
const char* lodepng_error_text(unsigned code)
{
  switch(code)
  {
    case 0: return "no error, everything went ok";
    case 1: return "nothing done yet"; /*the Encoder/Decoder has done nothing yet, error checking makes no sense yet*/
    case 10: return "end of input memory reached without huffman end code"; /*while huffman decoding*/
    case 11: return "error in code tree made it jump outside of huffman tree"; /*while huffman decoding*/
    case 13: return "problem while processing dynamic deflate block";
    case 14: return "problem while processing dynamic deflate block";
    case 15: return "problem while processing dynamic deflate block";
    case 16: return "unexisting code while processing dynamic deflate block";
    case 17: return "end of out buffer memory reached while inflating";
    case 18: return "invalid distance code while inflating";
    case 19: return "end of out buffer memory reached while inflating";
    case 20: return "invalid deflate block BTYPE encountered while decoding";
    case 21: return "NLEN is not ones complement of LEN in a deflate block";
     /*end of out buffer memory reached while inflating:
     This can happen if the inflated deflate data is longer than the amount of bytes required to fill up
     all the pixels of the image, given the color depth and image dimensions. Something that doesn't
     happen in a normal, well encoded, PNG image.*/
    case 22: return "end of out buffer memory reached while inflating";
    case 23: return "end of in buffer memory reached while inflating";
    case 24: return "invalid FCHECK in zlib header";
    case 25: return "invalid compression method in zlib header";
    case 26: return "FDICT encountered in zlib header while it's not used for PNG";
    case 27: return "PNG file is smaller than a PNG header";
    /*Checks the magic file header, the first 8 bytes of the PNG file*/
    case 28: return "incorrect PNG signature, it's no PNG or corrupted";
    case 29: return "first chunk is not the header chunk";
    case 30: return "chunk length too large, chunk broken off at end of file";
    case 31: return "illegal PNG color type or bpp";
    case 32: return "illegal PNG compression method";
    case 33: return "illegal PNG filter method";
    case 34: return "illegal PNG interlace method";
    case 35: return "chunk length of a chunk is too large or the chunk too small";
    case 36: return "illegal PNG filter type encountered";
    case 37: return "illegal bit depth for this color type given";
    case 38: return "the palette is too big"; /*more than 256 colors*/
    case 39: return "more palette alpha values given in tRNS chunk than there are colors in the palette";
    case 40: return "tRNS chunk has wrong size for greyscale image";
    case 41: return "tRNS chunk has wrong size for RGB image";
    case 42: return "tRNS chunk appeared while it was not allowed for this color type";
    case 43: return "bKGD chunk has wrong size for palette image";
    case 44: return "bKGD chunk has wrong size for greyscale image";
    case 45: return "bKGD chunk has wrong size for RGB image";
    /*Is the palette too small?*/
    case 46: return "a value in indexed image is larger than the palette size (bitdepth = 8)";
    /*Is the palette too small?*/
    case 47: return "a value in indexed image is larger than the palette size (bitdepth < 8)";
    /*the input data is empty, maybe a PNG file doesn't exist or is in the wrong path*/
    case 48: return "empty input or file doesn't exist";
    case 49: return "jumped past memory while generating dynamic huffman tree";
    case 50: return "jumped past memory while generating dynamic huffman tree";
    case 51: return "jumped past memory while inflating huffman block";
    case 52: return "jumped past memory while inflating";
    case 53: return "size of zlib data too small";
    case 54: return "repeat symbol in tree while there was no value symbol yet";