FFBigNum           32 libavformat/rtmpdh.h typedef mpz_ptr FFBigNum;
FFBigNum           36 libavformat/rtmpdh.h typedef gcry_mpi_t FFBigNum;
FFBigNum           42 libavformat/rtmpdh.h typedef BIGNUM *FFBigNum;
FFBigNum           46 libavformat/rtmpdh.h typedef mbedtls_mpi *FFBigNum;