Ticket #15151: patch-15151-2-doc.diff

diff --git a/wp-includes/class.wp-xmlrpc-server.php b/wp-includes/class.wp-xmlrpc-server.php
index fac23ea..decec33 100644
--- a/wp-includes/class.wp-xmlrpc-server.php
+++ b/wp-includes/class.wp-xmlrpc-server.php
@@ -1484,13 +1484,24 @@ class wp_xmlrpc_server extends IXR_Server {
        }
 
        /**
-        * Retrieve media item.
+        * Retrieve a media item by ID
         *
         * @since 3.1.0
-        * @todo Docment this!
         *
-        * @param array $args Method parameters.
-        * @return array
+        * @param array $args Method parameters. Contains: 
+        *  - blog_id
+        *  - username
+        *  - password
+        *  - attachment_id
+        * @return array. Assocciative array containing: 
+        *  - 'date_created_gmt'
+        *  - 'parent'
+        *  - 'link'
+        *  - 'thumbnail'
+        *  - 'title'
+        *  - 'caption'
+        *  - 'description'
+        *  - 'metadata'
         */
        function wp_getMediaItem($args) {
                $this->escape($args);
@@ -1533,13 +1544,27 @@ class wp_xmlrpc_server extends IXR_Server {
        }
 
        /**
-        * Retrieve media library items.
-        *
+        * Retrieves a collection of media library items (or attachments)
+        * 
+        * Besides the common blog_id, username, and password arguments, it takes a filter 
+        * array as last argument.
+        * 
+        * Accepted 'filter' keys are 'parent_id', 'mime_type', 'offset', and 'number'.
+        * 
+        * The defaults are as follows:
+        * - 'number' - Default is 5. Total number of media items to retrieve.
+        * - 'offset' - Default is 0. See {@link WP_Query::query()} for more.
+        * - 'parent_id' - Default is ''. The post where the media item is attached. Empty string shows all media items. 0 shows unattached media items.
+        * - 'mime_type' - Default is ''. Filter by mime type (e.g., 'image/jpeg', 'application/pdf')
+        * 
         * @since 3.1.0
-        * @todo Document this.
         *
-        * @param array $args Method parameters.
-        * @return array
+        * @param array $args Method parameters. Contains:
+        *  - blog_id
+        *  - username
+        *  - password
+        *  - filter
+        * @return array. Contains a collection of media items. See {@link wp_xmlrpc_server::wp_getMediaItem()} for a description of each item contents
         */
        function wp_getMediaLibrary($args) {
                $raw_args = $args;
@@ -1558,8 +1583,8 @@ class wp_xmlrpc_server extends IXR_Server {
 
                do_action('xmlrpc_call', 'wp.getMediaLibrary');
 
-               $parent_id = ( isset($struct['parent_id']) ) ? absint($struct['parent_id']) : 0 ;
-               $mime_type = ( isset($struct['mime_type']) ) ? absint($struct['mime_type']) : '' ;              
+               $parent_id = ( isset($struct['parent_id']) ) ? absint($struct['parent_id']) : '' ;
+               $mime_type = ( isset($struct['mime_type']) ) ? $struct['mime_type'] : '' ;
                $offset = ( isset($struct['offset']) ) ? absint($struct['offset']) : 0 ;
                $number = ( isset($struct['number']) ) ? absint($struct['number']) : -1 ;