Function compress

dependency/densecrf/examples/lodepng.cpp:6050–6062

    
#ifdef LODEPNG_COMPILE_ENCODER
    unsigned compress(std::vector<unsigned char>& out, const unsigned char* in, size_t insize,
                      const LodePNGCompressSettings& settings)
    {
        unsigned char* buffer = 0;
        size_t buffersize = 0;
        unsigned error = zlib_compress(&buffer, &buffersize, in, insize, &settings);
        if(buffer)
        {
            out.insert(out.end(), &buffer[0], &buffer[buffersize]);
            lodepng_free(buffer);
        }
        return error;
    }
    
    unsigned compress(std::vector<unsigned char>& out, const std::vector<unsigned char>& in,
                      const LodePNGCompressSettings& settings)