Add PPAPI decryptor implementation.

ppapi/thunk/ppb_content_decryptor_private_thunk.cc

+// 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.
+
+#include "ppapi/c/private/ppb_content_decryptor_private.h"
+#include "ppapi/thunk/enter.h"
+#include "ppapi/thunk/ppb_instance_api.h"
+#include "ppapi/thunk/thunk.h"
+
+namespace ppapi {
+namespace thunk {
+
+namespace {
+
+void NeedKey(PP_Instance instance,
+             PP_Var key_system,
+             PP_Var session_id,
+             PP_Var init_data) {
+  EnterInstance enter(instance);
+  if (enter.succeeded())
+    enter.functions()->NeedKey(instance, key_system, session_id, init_data);
+}
+
+void KeyAdded(PP_Instance instance,
+              PP_Var key_system,
+              PP_Var session_id) {
+  EnterInstance enter(instance);
+  if (enter.succeeded())
+    enter.functions()->KeyAdded(instance, key_system, session_id);
+}
+
+void KeyMessage(PP_Instance instance,
+                PP_Var key_system,
+                PP_Var session_id,
+                PP_Resource message,
+                PP_Var default_url) {
+  EnterInstance enter(instance);
+  if (enter.succeeded()) {
+    enter.functions()->KeyMessage(instance, key_system, session_id, message,
+                                  default_url);
+  }
+}
+
+void KeyError(PP_Instance instance,
+              PP_Var key_system,
+              PP_Var session_id,
+              int32_t media_error,
+              int32_t system_code) {
+  EnterInstance enter(instance);
+  if (enter.succeeded()) {
+    enter.functions()->KeyError(instance, key_system, session_id, media_error,
+                                system_code);
+  }
+}
+
+void DeliverBlock(PP_Instance instance,
+                  PP_Resource decrypted_block,
+                  int32_t request_id) {
+  EnterInstance enter(instance);
+  if (enter.succeeded())
+    enter.functions()->DeliverBlock(instance, decrypted_block, request_id);
+}
+
+void DeliverFrame(PP_Instance instance,
+                  PP_Resource decrypted_frame,
+                  int32_t request_id) {
+  EnterInstance enter(instance);
+  if (enter.succeeded())
+    enter.functions()->DeliverFrame(instance, decrypted_frame, request_id);
+}
+
+void DeliverSamples(PP_Instance instance,
+                    PP_Resource decrypted_samples,
+                    int32_t request_id) {
+  EnterInstance enter(instance);
+  if (enter.succeeded())
+    enter.functions()->DeliverSamples(instance, decrypted_samples, request_id);
+}
+
+const PPB_ContentDecryptor_Private g_ppb_decryption_thunk = {
+  &NeedKey,
+  &KeyAdded,
+  &KeyMessage,
+  &KeyError,
+  &DeliverBlock,
+  &DeliverFrame,
+  &DeliverSamples
+};
+
+}  // namespace
+
+const PPB_ContentDecryptor_Private*
+    GetPPB_ContentDecryptor_Private_0_1_Thunk() {
+  return &g_ppb_decryption_thunk;
+}
+
+}  // namespace thunk
+}  // namespace ppapi