function bp_register_theme_compat_default_features() {
	global $content_width;

	// Do not set up default features on deactivation.
	if ( bp_is_deactivation() ) {
		return;
	}

	// If the current theme doesn't need theme compat, bail at this point.
	if ( ! bp_use_theme_compat_with_current_theme() ) {
		return;
	}

	// Make sure BP Legacy is the Theme Compat in use.
	if ( 'legacy' !== bp_get_theme_compat_id() ) {
		return;
	}

	// Get the theme.
	$current_theme = wp_get_theme();
	$theme_handle  = $current_theme->get_stylesheet();
	$parent        = $current_theme->parent();

	if ( $parent ) {
		$theme_handle = $parent->get_stylesheet();
	}

	/**
	 * Since Companion stylesheets, the $content_width is smaller
	 * than the width used by BuddyPress, so we need to manually set the
	 * content width for the concerned themes.
	 *
	 * Example: array( stylesheet => content width used by BuddyPress )
	 */
	$bp_content_widths = array(
		'twentyfifteen'  => 1300,
		'twentyfourteen' => 955,
		'twentythirteen' => 890,
	);

	// Default values.
	$bp_content_width = (int) $content_width;
	$bp_handle        = 'bp-legacy-css';

	// Specific to themes having companion stylesheets.
	if ( isset( $bp_content_widths[ $theme_handle ] ) ) {
		$bp_content_width = $bp_content_widths[ $theme_handle ];
		$bp_handle        = 'bp-' . $theme_handle;
	}

	if ( is_rtl() ) {
		$bp_handle .= '-rtl';
	}

	$top_offset    = 150;
	$avatar_height = apply_filters( 'bp_core_avatar_full_height', $top_offset );

	if ( $avatar_height > $top_offset ) {
		$top_offset = $avatar_height;
	}

	bp_set_theme_compat_feature( 'legacy', array(
		'name'     => 'cover_image',
		'settings' => array(
			'components'   => array( 'xprofile', 'groups' ),
			'width'        => $bp_content_width,
			'height'       => $top_offset + round( $avatar_height / 2 ),
			'callback'     => 'bp_legacy_theme_cover_image',
			'theme_handle' => $bp_handle,
		),
	) );
}