Draft of a PPAPI interface for ArrayBuffer and typed arrays.

ppapi/api/dev/ppb_arraybuffer.idl

Index: ppapi/api/dev/ppb_arraybuffer.idl
diff --git a/ppapi/api/dev/ppb_arraybuffer.idl b/ppapi/api/dev/ppb_arraybuffer.idl
new file mode 100644
index 0000000000000000000000000000000000000000..99c2631d65247f0e516e1f3d402982ad1e991b7a
--- /dev/null
+++ b/ppapi/api/dev/ppb_arraybuffer.idl
@@ -0,0 +1,46 @@
+/* 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 <code>PPB_ArrayBuffer_Dev</code> struct.
+ */
+
+label Chrome {
+  M17 = 0.1
+};

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

i guess this file should have the _dev suffix too?

had you considered just using PPB_Buffer_Dev instead?  it seems very similar.

+
+/**
+ * PPB_ArrayBuffer_Dev API. This provides a way to interact with JavaScript
+ * ArrayBuffers, which are the underlying implementation for TypedArrays.
+ * To manage the reference count for an ArrayBuffer, please see PPB_Var.
+ */
+interface PPB_ArrayBuffer_Dev {
+  /**
+   * Create a zero-initialized ArrayBuffer.
+   *
+   * @param[in] module A PP_Module uniquely identifying the module.
+   * @param[in] size_in_bytes The size of the array that will be created.
+   *
+   * @return A PP_Var which represents an ArrayBuffer of the requested size with
+   *         a reference count of 1.
+   */
+  PP_Var Create([in] PP_Module module,
+                [in] uint32_t size_in_bytes);
+  /**
+   * Returns the length of the ArrayBuffer in bytes.
+   *
+   * @return The length of the ArrayBuffer in bytes.
+   */
+  uint32_t ByteLength([in] PP_Var array);
+  /**
+   * Returns a pointer to the beginning of the buffer for the given array.
+   *
+   * @param[in] array The array whose buffer should be returned.
+   *
+   * @return A pointer to the buffer for this array.
+   */
+  mem_t GetBuffer([in] PP_Var array);
+};
+