Add PPAPI decryptor interfaces.

ppapi/c/dev/ppp_content_decryption_module_dev.h

+/* 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.
+ */
+
+/* From dev/ppp_content_decryption_module_dev.idl,
+ *   modified Thu Jun 14 09:32:18 2012.
+ */
+
+#ifndef PPAPI_C_DEV_PPP_CONTENT_DECRYPTION_MODULE_DEV_H_
+#define PPAPI_C_DEV_PPP_CONTENT_DECRYPTION_MODULE_DEV_H_
+
+#include "ppapi/c/pp_bool.h"
+#include "ppapi/c/pp_completion_callback.h"
+#include "ppapi/c/pp_instance.h"
+#include "ppapi/c/pp_macros.h"
+#include "ppapi/c/pp_resource.h"
+#include "ppapi/c/pp_stdint.h"
+#include "ppapi/c/pp_var.h"
+
+#define PPP_CONTENTDECRYPTIONMODULE_DEV_INTERFACE_0_1 \
+    "PPP_ContentDecryptionModule(Dev);0.1"
+#define PPP_CONTENTDECRYPTIONMODULE_DEV_INTERFACE \
+    PPP_CONTENTDECRYPTIONMODULE_DEV_INTERFACE_0_1
+
+/**
+ * @file
+ * This file defines the <code>PPP_ContentDecryptionModule_Dev</code>
+ * interface.
+ */
+
+/**
+ * @addtogroup Interfaces
+ * @{
+ */
+
+/**
+ * <code>PPP_ContentDecryptionModule_Dev</code> structure contains the function
+ * pointers the decryption plugin MUST implement to provide services needed by
+ * the media stack.
+ */
+struct PPP_ContentDecryptionModule_Dev_0_1 {
+  /**
+   * Generates a key request. key_system is an optional param that is used
+   * to specify the key or licensing system from which to request the key when
+   * the plugin provides access to multiple systems. init_data is a data
+   * buffer containing initialization data for the key system(s) implemented
+   * by the plugin. response is a data buffer filled only when callback is
+   * notified of success.
+   */
+  PP_Bool (*GenerateKeyRequest)(PP_Instance instance,
+                                struct PP_Var key_system,
+                                PP_Resource init_data);
+
+  /**
+   * Provides a key or license to use for decrypting media data for session_id.
+   */
+  PP_Bool (*AddKey)(PP_Instance instance,
+                    struct PP_Var session_id,
+                    PP_Resource key);
+
+  /**
+   * Cancels a key request for session_id.
+   */
+  PP_Bool (*CancelKeyRequest)(PP_Instance instance,
+                              struct PP_Var session_id);
+
+  /**
+   * Decrypts the block and returns the unencrypted block.
+   * In the case of media, the block contains encoded data.
+   * decrypted_block is valid only after the callback is notified of success.
+   */
+  PP_Bool (*Decrypt)(PP_Instance instance,
+                     PP_Resource encrypted_block,
+                     struct PP_CompletionCallback callback);
+
+  /**
+   * Decrypts the block then decodes it and returns the raw (decoded)
+   * unencrypted frame.
+   * decoded_frame is valid only after the callback is notified of success.
+   */
+  PP_Bool (*DecryptAndDecode)(PP_Instance instance,
+                              PP_Resource encrypted_block,
+                              struct PP_CompletionCallback callback);
+};
+
+typedef struct PPP_ContentDecryptionModule_Dev_0_1
+    PPP_ContentDecryptionModule_Dev;
+
+/**
+ * @}
+ */
+
+#endif  /* PPAPI_C_DEV_PPP_CONTENT_DECRYPTION_MODULE_DEV_H_ */