WebSocket Pepper API: add interfaces to handle binaryType attribute

ppapi/api/dev/ppb_websocket_dev.idl

 /* Copyright (c) 2012 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /**
  * This file defines the <code>PPB_WebSocket_Dev</code> interface.
  */
 label Chrome {
-  M17 = 0.1
+  M17 = 0.1,
+  M18 = 0.9
 };
 
 
 /**
  * This enumeration contains the types representing the WebSocket ready state
  * and these states are based on the JavaScript WebSocket API specification.
  * GetReadyState() returns one of these states.
  */
 [assert_size(4)]
 enum PP_WebSocketReadyState_Dev {
@@ skipping 17 matching lines @@
    */
   PP_WEBSOCKETREADYSTATE_CLOSING_DEV = 2,
 
   /**
    * Ready state that the connection has been closed or could not be opened.
    */
   PP_WEBSOCKETREADYSTATE_CLOSED_DEV = 3
 };
 
 /**
- * This enumeration contains the types representing the WebSocket message type
- * and these types are based on the JavaScript WebSocket API specification.
- * ReceiveMessage() and SendMessage() use them as a parameter to represent
- * handling message types.
+ * This enumeration contains the types representing the WebSocket binary type
+ * to receive frames. These types are based on the JavaScript WebSocket API
+ * specification.
  */
 [assert_size(4)]
-enum PP_WebSocketMessageType_Dev {
+enum PP_WebSocketBinaryType_Dev {
   /**
-   * Message type that represents a text message type.
+   * Binary type is queried on an invalid resource.
    */
-  PP_WEBSOCKET_MESSAGE_TYPE_TEXT_DEV = 0,
+  PP_WEBSOCKETBINARYTYPE_INVALID = -1,
 
   /**
-   * Message type that represents a binary message type.
+   * Binary type that represents Blob objects.
    */
-  PP_WEBSOCKET_MESSAGE_TYPE_BINARY_DEV = 1
+  PP_WEBSOCKETBINARYTYPE_BLOB_DEV = 0,
+
+  /**
+   * Binary type that represents ArrayBuffer objects.
+   */
+  PP_WEBSOCKETBINARYTYPE_ARRAYBUFFER_DEV = 1
 };
 
-[version=0.1, macro="PPB_WEBSOCKET_DEV_INTERFACE"]
 interface PPB_WebSocket_Dev {
   /**
    * Create() creates a WebSocket instance.
    *
    * @param[in] instance A <code>PP_Instance</code> identifying the instance
    * with the WebSocket.
    *
    * @return A <code>PP_Resource</code> corresponding to a WebSocket if
    * successful.
    */
@@ skipping 231 matching lines @@
    * GetURL() returns the URL associated with specified WebSocket connection.
    *
    * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
    * WebSocket.
    *
    * @return Returns a <code>PP_VARTYPE_STRING</code> var. If called before the
    * connection is established, it contains the empty string. Return a
    * <code>PP_VARTYPE_UNDEFINED</code> if called on an invalid resource.
    */
   PP_Var GetURL([in] PP_Resource web_socket);
+
+  /**
+   * SetBinaryType() specifies the binary object type for receiving binary
+   * frames representation. Receiving text frames are always mapped to
+   * <PP_VARTYPE_STRING</code> var regardless of this attribute.
+   * This function should be called before Connect() to ensure receiving all
+   * incoming binary frames as the specified binary object type.
+   * Default type is <code>PP_WEBSOCKETBINARYTYPE_BLOB_DEV</code>.
+   *
+   * Currently, Blob bindings is not supported in Pepper, so receiving binary
+   * type is always ArrayBuffer. To ensure backward compatibility, you must
+   * call this function with
+   * <code>PP_WEBSOCKETBINARYTYPE_ARRAYBUFFER_DEV</code> to use binary frames.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @param[in] binary_type Binary object type for receibing binary frames
+   * representation.
+   *
+   * @return Returns <code>PP_FALSE</code> if the specified type is not
+   * supported. Otherwise, returns <code>PP_TRUE</code>.
+   */
+  [version=0.9]
+  PP_Bool SetBinaryType([in] PP_Resource web_socket,
+                        [in] PP_WebSocketBinaryType_Dev binary_type);
+
+  /**
+   * GetBinaryType() returns currently specified binary object type for
+   * receiving binary frames representation.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns <code>PP_WebSocketBinaryType_Dev</code> represents
+   * current binary object type.
+   */
+  [version=0.9]
+  PP_WebSocketBinaryType_Dev GetBinaryType([in] PP_Resource web_socket);
 };