(a) A police officer may arrest for offenses committed in his presence without warrant being first issued. Arrest without warrant may be made in any case where it is apparent to the policeman that delay in obtaining a warrant would obstruct the ends of justice.
(b) If any person shall, in the presence of a police officer and within the City, make an affray, or threaten to beat, wound or kill another, or to commit violence against his person or property; or contend with angry words to the disturbance of the peace; or improperly or indecently expose his person; or appear in a state of gross intoxication in a public place; such police officer may, without warrant or other process, or further proof, arrest such offender or offending person, and if upon hearing the testimony of such officer and other witnesses, if any are then there produced, the court be convinced that such offense be proved, it shall require the offender to give bond or recognizance, with surety, to keep the peace and be of good behavior for a term not exceeding one year, in addition to any other fine or penalty which may be prescribed for the charge. (1978 Code Sec. 22-1.)