Changes the default embed sizes based on site layout

genesis-embed-objects.php

add_filter( 'embed_defaults', 'wps_embed_defaults' );
/**
 * Changes the default embed sizes based on site layout
 * via filtering wp_embed_defaults()
 *
 * @author Travis Smith
 *
 * @param array height and width keys, values can be string/int
 * @return array height and width keys and values
 */
function wps_embed_defaults( $defaults ) {  

	switch ( genesis_site_layout() ) {

		case 'content-sidebar':
		case 'sidebar-content':
			$defaults = array( 'width'  => 600, 'height' => 400 );
			break;
		case 'content-sidebar-sidebar':
		case 'sidebar-content-sidebar':
		case 'sidebar-sidebar-content':
			$defaults = array( 'width'  => 430, 'height' => 300 );
			break;
		default:
			break;
	}
	return $defaults; 

}