memcpy is invoked with a gigantic num value which is likely to cause a crash.BrotliEncoderSetCustomDictionary and BrotliDecoderSetCustomDictionary.BROTLI_DECODER_PARAM_DISABLE_RING_BUFFER_REALLOCATION to avoid ringbuffer reallocation.BROTLI_PARAM_NPOSTFIX and BROTLI_PARAM_NDIRECT encoder parameters.BROTLI_DECODER_ERROR_DICTIONARY_NOT_SET.kBrotliMinWindowBits and kBrotliMaxWindowBits.BrotliEncoderInputBlockSize(), BrotliEncoderCopyInputToRingBuffer(), and BrotliEncoderWriteData().BROTLI_PARAM_SIZE_HINT encoder option.