BrotliEncoderCompressStream
done = BrotliEncoderCompressStream(state->encoder, BROTLI_OPERATION_FLUSH,
brret = BrotliEncoderCompressStream(ctx->encode.state, BROTLI_OPERATION_FLUSH, &ctx->encode.avail_in, (const uint8_t **)&ctx->encode.next_in,
brret = BrotliEncoderCompressStream(ctx->encode.state, BROTLI_OPERATION_FINISH, &ctx->encode.avail_in,