bp_activity_has_media_activity_filter( $has_activities,  $activities )

function bp_activity_has_media_activity_filter( $has_activities, $activities ) {

	if ( ! $has_activities || ! bp_is_active( 'media' ) || ! bp_is_single_activity() ) {
		return $has_activities;
	}

	if ( ! empty( $activities->activities ) ) {
		foreach ( $activities->activities as $key => $activity ) {
			if ( in_array( $activity->privacy, array( 'media', 'document' ) ) ) {
				$parent_activity_id = false;
				if ( ! empty( $activity->secondary_item_id ) ) {
					$parent_activity_id = $activity->secondary_item_id;
				} else {
					$attachment_id = BP_Media::get_activity_attachment_id( $activity->id );
					if ( ! empty( $attachment_id ) ) {
						$parent_activity_id = get_post_meta( $attachment_id, 'bp_media_parent_activity_id', true );
					}
				}

				if ( ! empty( $parent_activity_id ) ) {
					$parent         = new BP_Activity_Activity( $parent_activity_id );
					$parent_user    = $parent->user_id;
					$parent_privacy = $parent->privacy;

					if ( $parent_privacy === 'public' ) {
						continue;
					}

					$remove_from_stream = false;

					if ( $parent_privacy === 'loggedin' && ! bp_loggedin_user_id() ) {
						$remove_from_stream = true;
					}

					if ( false === $remove_from_stream && $parent_privacy === 'onlyme' && bp_loggedin_user_id() !== $parent_user ) {
						$remove_from_stream = true;
					}

					if ( false === $remove_from_stream && $parent_privacy === 'friends' ) {
						if ( bp_is_active( 'friends' ) ) {
							$is_friend = friends_check_friendship( bp_loggedin_user_id(), $parent_user );
							if ( ! $is_friend && $parent_user !== bp_loggedin_user_id() ) {
								$remove_from_stream = true;
							}
						} else {
							$remove_from_stream = true;
						}
					}

					if ( $remove_from_stream && isset( $activities->activity_count ) ) {
						$activities->activity_count = $activities->activity_count - 1;

						if ( isset( $activities->total_activity_count ) ) {
							$activities->total_activity_count = $activities->total_activity_count - 1;
						}

						unset( $activities->activities[ $key ] );
					}

				}
			}
		}
	}

	$activities->activities = array_values( $activities->activities );
	if ( $activities->activity_count === 0 ) {
		return false;
	}

	return $has_activities;
}