Including another deflate to ZopfliPNG

Question

I'm currently studying programmation and I'm trying to add This library to ZopfliPNG. I would like to use it instead of Zopfli. I tried to change to this but it's not working :

unsigned CustomPNGDeflate(unsigned char** out, size_t* outsize,
                          const unsigned char* in, size_t insize,
                          const LodePNGCompressSettings* settings) {

            int compression_level = 12;

            struct libdeflate_compressor* compressor;

            compressor = libdeflate_alloc_compressor(compression_level);

            libdeflate_deflate_compress(compressor, in, insize, out, outsize);

            libdeflate_free_compressor(compressor);

            return 0;
}

During compilation, I have this :

error: invalid conversion from 'size_t* {aka unsigned int*}' to 'size_t {aka unsigned int}' [-fpermissive]
  libdeflate_deflate_compress(compressor, in, insize, out, outsize);

libdeflate.h:65:1:
note: initializing argument 5 of 'size_t libdeflate_deflate_compress(libdeflate_compressor*, const void*, size_t, void*, size_t)'
 libdeflate_deflate_compress(struct libdeflate_compressor *compressor,

make: *** [bin] Error 1

Maybe I'm not doing the right stuff here. Any help will be appreciated !

Answer 1

outsize is a size_t * but libdeflate_deflate_compress is expecting a size_t.