Function decode

dependency/densecrf/examples/lodepng.cpp:6099–6114

#ifdef LODEPNG_COMPILE_DECODER
    
    unsigned decode(std::vector<unsigned char>& out, unsigned& w, unsigned& h, const unsigned char* in,
                    size_t insize, LodePNGColorType colortype, unsigned bitdepth)
    {
        unsigned char* buffer;
        unsigned error = lodepng_decode_memory(&buffer, &w, &h, in, insize, colortype, bitdepth);
        if(buffer && !error)
        {
            State state;
            state.info_raw.colortype = colortype;
            state.info_raw.bitdepth = bitdepth;
            size_t buffersize = lodepng_get_raw_size(w, h, &state.info_raw);
            out.insert(out.end(), &buffer[0], &buffer[buffersize]);
            lodepng_free(buffer);
        }
        return error;
    }
    
    unsigned decode(std::vector<unsigned char>& out, unsigned& w, unsigned& h,
                    const std::vector<unsigned char>& in, LodePNGColorType colortype, unsigned bitdepth)