Draft of a PPAPI interface for ArrayBuffer and typed arrays.

ppapi/api/pp_var.idl

 /* Copyright (c) 2011 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 API for handling the passing of data types between
  * your module and the page.
  */
 
@@ skipping 43 matching lines @@
    */
   PP_VARTYPE_OBJECT,
 
   /**
    * Arrays and dictionaries are not currently supported but will be added
    * in future revisions. These objects are reference counted so be sure
    * to properly AddRef/Release them as you would with strings to ensure your
    * module will continue to work with future versions of the API.
    */
   PP_VARTYPE_ARRAY,
-  PP_VARTYPE_DICTIONARY
+  PP_VARTYPE_DICTIONARY,
+
+  /**
+   * ArrayBuffer represents a JavaScript ArrayBuffer. This is the type which
+   * represents Typed Arrays in JavaScript. Unlike JavaScript 'Array', it is
+   * only meant to contain basic numeric types, and is always stored
+   * contiguously.
+   */
+  PP_VARTYPE_ARRAY_BUFFER

[darin (slow to review), 2011/11/08 22:16:18]

I'm very curious about the idea of making this be PP_VARTYPE_BUFFER (meaning
PPB_Buffer), and then just commenting that a PPB_Buffer can be converted to a
ArrayBuffer in JS.

[dmichael (off chromium), 2011/11/08 22:32:20]

PPB_Buffer is a PP_Resource, whereas I really want this to be a PP_Var. It's a
shame to have the duplication; maybe video could eventually move to using
ArrayBuffer?

 };
 
 
 /**
  * The PP_VarValue union stores the data for any one of the types listed
  * in the PP_VarType enum.
  */
 [union] struct PP_VarValue {
   /**
    * If <code>type</code> is <code>PP_VARTYPE_BOOL</code>,
@@ skipping 132 matching lines @@
   struct PP_Var result = { PP_VARTYPE_DOUBLE, 0, {PP_FALSE} };
   result.value.as_double = value;
   return result;
 }
 /**
  * @}
  */
 
 #endinl