Show media count in rtMedia gallery shortcode

functions.php

<?php
// Check if function doest not exists.
if ( ! function_exists( 'rtmedia_gallery_after_title_add_media_count' ) ) {
	function rtmedia_gallery_after_title_add_media_count() {
		global $rtmedia_query;
		// Check for gallery shortcode
		if ( isset( $rtmedia_query->is_gallery_shortcode ) && true === $rtmedia_query->is_gallery_shortcode ) {
			// Defalut value for media count.
			$media_count = 0;
			if ( isset( $rtmedia_query->is_gallery_shortcode ) ) {
				// get value from the pagination
				$media_count = intval( $rtmedia_query->media_count );
			}
			?>
			<h2 class="rtm-gallery-count">
				<?php
				echo sprintf( esc_html__( '( %d )', 'buddypress-media' ), intval( $media_count ) );
				?>
			</h2>

			<style type="text/css">
				.rtmedia_gallery_wrapper #rtm-gallery-title-container .rtm-gallery-title{
					display: inline;
				}

				.rtmedia_gallery_wrapper #rtm-gallery-title-container .rtm-gallery-count{
					display: inline;
					margin: 0px;
				}
			</style>
			<?php
		}
	}
}
add_action( 'rtmedia_gallery_after_title', 'rtmedia_gallery_after_title_add_media_count', 10 );