finlabsindia/wp-content/plugins/jetpack/json-endpoints/class.wpcom-json-api-get-media-v1-1-endpoint.php

<?php

new WPCOM_JSON_API_Get_Media_v1_1_Endpoint( array(
	'description' => 'Get a single media item (by ID).',
	'group'       => 'media',
	'stat'        => 'media:1',
	'min_version' => '1.1',
	'max_version' => '1.1',
	'method'      => 'GET',
	'path'        => '/sites/%s/media/%d',
	'path_labels' => array(
		'$site'    => '(int|string) Site ID or domain',
		'$media_ID' => '(int) The ID of the media item',
	),
	'response_format' => array(
		'ID'               => '(int) The ID of the media item',
		'date'             => '(ISO 8601 datetime) The date the media was uploaded',
		'post_ID'          => '(int) ID of the post this media is attached to',
		'author_ID'        => '(int) ID of the user who uploaded the media',
		'URL'              => '(string) URL to the file',
		'guid'             => '(string) Unique identifier',
		'file'			   => '(string) Filename',
		'extension'        => '(string) File extension',
		'mime_type'        => '(string) File MIME type',
		'title'            => '(string) Filename',
		'caption'          => '(string) User-provided caption of the file',
		'description'      => '(string) Description of the file',
		'alt'              => '(string)  Alternative text for image files.',
		'thumbnails'       => '(object) Media item thumbnail URL options',
		'height'           => '(int) (Image & video only) Height of the media item',
		'width'            => '(int) (Image & video only) Width of the media item',
		'length'           => '(int) (Video & audio only) Duration of the media item, in seconds',
		'exif'             => '(array) (Image & audio only) Exif (meta) information about the media item',
		'videopress_guid'  => '(string) (Video only) VideoPress GUID of the video when uploaded on a blog with VideoPress',
		'videopress_processing_done'  => '(bool) (Video only) If the video is uploaded on a blog with VideoPress, this will return the status of processing on the video.'
	),

	'example_request'      => 'https://public-api.wordpress.com/rest/v1.1/sites/82974409/media/934',
	'example_request_data' =>  array(
		'headers' => array(
			'authorization' => 'Bearer YOUR_API_TOKEN'
		)
	)
) );

class WPCOM_JSON_API_Get_Media_v1_1_Endpoint extends WPCOM_JSON_API_Endpoint {
	function callback( $path = '', $blog_id = 0, $media_id = 0 ) {
		$blog_id = $this->api->switch_to_blog_and_validate_user( $this->api->get_blog_id( $blog_id ) );
		if ( is_wp_error( $blog_id ) ) {
			return $blog_id;
		}

		if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
			$this->load_theme_functions();
		}

		//upload_files can probably be used for other endpoints but we want contributors to be able to use media too
		if ( ! current_user_can( 'edit_posts', $media_id ) ) {
			return new WP_Error( 'unauthorized', 'User cannot view media', 403 );
		}

		return $this->get_media_item_v1_1( $media_id );
	}
}