Draft of a PPAPI interface for ArrayBuffer and typed arrays.

ppapi/cpp/dev/array_buffer_dev.cc

+// 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.
+
+#include "ppapi/cpp/dev/array_buffer_dev.h"
+
+#include "ppapi/c/dev/ppb_array_buffer_dev.h"
+#include "ppapi/cpp/logging.h"
+#include "ppapi/cpp/module_impl.h"
+
+namespace pp {
+
+namespace {
+
+template <> const char* interface_name<PPB_ArrayBuffer_Dev>() {
+  return PPB_VAR_ARRAY_BUFFER_DEV_INTERFACE;
+}
+
+}  // namespace
+
+ArrayBuffer_Dev::ArrayBuffer_Dev() {
+  if (has_interface<PPB_Var_ArrayBuffer_Dev>()) {
+    var_ = get_interface<PPB_Var_ArrayBuffer_Dev>()->Create(
+        Module::Get()->pp_module(),
+        0);
+  } else {
+    PP_NOTREACHED();
+    var_.type = PP_VARTYPE_NULL;
+    var_.padding = 0;
+  }
+}
+
+ArrayBuffer_Dev::ArrayBuffer_Dev(const Var& var) {
+  if (var.type == PP_VARTYPE_ARRAY_BUFFER_DEV) {
+    *this = var;
+  } else {
+    PP_NOTREACHED();
+    var_.type = PP_VARTYPE_NULL;
+    var_.padding = 0;
+  }
+}
+
+ArrayBuffer_Dev::ArrayBuffer_Dev(uint32_t size_in_bytes) {
+  if (has_interface<PPB_Var_ArrayBuffer_Dev>()) {
+    var_ = get_interface<PPB_Var_ArrayBuffer_Dev>()->Create(
+        Module::Get()->pp_module(),
+        size_in_bytes);
+  } else {
+    PP_NOTREACHED();
+    var_.type = PP_VARTYPE_NULL;
+    var_.padding = 0;
+  }
+}
+
+uint32_t ArrayBuffer_Dev::ByteLength() const {
+  if (has_interface<PPB_Var_ArrayBuffer_Dev>()) {
+    return get_interface<PPB_Var_ArrayBuffer_Dev>()->ByteLength(var_);
+  }
+  PP_NOTREACHED();
+  return 0;
+}
+
+const void* ArrayBuffer_Dev::GetBuffer() const {
+  if (has_interface<PPB_Var_ArrayBuffer_Dev>()) {
+    return get_interface<PPB_Var_ArrayBuffer_Dev>()->GetBuffer(var_);
+  }
+  PP_NOTREACHED();
+  return 0;
+}
+
+void* ArrayBuffer_Dev::GetBuffer() {
+  if (has_interface<PPB_Var_ArrayBuffer_Dev>()) {
+    return get_interface<PPB_Var_ArrayBuffer_Dev>()->GetBuffer(var_);
+  }
+  PP_NOTREACHED();
+  return 0;
+}
+
+}  // namespace pp