Pepper API for output protection.

ppapi/c/private/ppb_output_protection_private.h

Index: ppapi/c/private/ppb_output_protection_private.h
diff --git a/ppapi/c/private/ppb_output_protection_private.h b/ppapi/c/private/ppb_output_protection_private.h
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+++ b/ppapi/c/private/ppb_output_protection_private.h
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+/* Copyright 2013 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 private/ppb_output_protection_private.idl,
+ *   modified Sat Aug 31 03:18:39 2013.
+ */
+
+#ifndef PPAPI_C_PRIVATE_PPB_OUTPUT_PROTECTION_PRIVATE_H_
+#define PPAPI_C_PRIVATE_PPB_OUTPUT_PROTECTION_PRIVATE_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"
+
+#define PPB_OUTPUTPROTECTION_PRIVATE_INTERFACE_0_1 \
+    "PPB_OutputProtection_Private;0.1"
+#define PPB_OUTPUTPROTECTION_PRIVATE_INTERFACE \
+    PPB_OUTPUTPROTECTION_PRIVATE_INTERFACE_0_1
+
+/**
+ * @file
+ * This file defines the API for output protection. Currently, it only supports
+ * Chrome OS.
+ */
+
+
+/**
+ * @addtogroup Enums
+ * @{
+ */
+/**
+ * Content protection methods applied on video output link.
+ */
+typedef enum {
+  PP_OUTPUT_PROTECTION_METHOD_PRIVATE_NONE = 0,
+  PP_OUTPUT_PROTECTION_METHOD_PRIVATE_HDCP = 1 << 0
+} PP_OutputProtectionMethod_Private;
+PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_OutputProtectionMethod_Private, 4);
+
+/**
+ * Video output link types.
+ */
+typedef enum {
+  PP_OUTPUT_PROTECTION_LINK_TYPE_PRIVATE_NONE = 0,
+  PP_OUTPUT_PROTECTION_LINK_TYPE_PRIVATE_UNKNOWN = 1 << 0,
+  PP_OUTPUT_PROTECTION_LINK_TYPE_PRIVATE_INTERNAL = 1 << 1,
+  PP_OUTPUT_PROTECTION_LINK_TYPE_PRIVATE_VGA = 1 << 2,
+  PP_OUTPUT_PROTECTION_LINK_TYPE_PRIVATE_HDMI = 1 << 3,
+  PP_OUTPUT_PROTECTION_LINK_TYPE_PRIVATE_DVI = 1 << 4,
+  PP_OUTPUT_PROTECTION_LINK_TYPE_PRIVATE_DISPLAYPORT = 1 << 5
+} PP_OutputProtectionLinkType_Private;
+PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_OutputProtectionLinkType_Private, 4);
+/**
+ * @}
+ */
+
+/**
+ * @addtogroup Interfaces
+ * @{
+ */
+/**
+ * The <code>PPB_OutputProtection_Private</code> interface allows controlling
+ * output protection.
+ *
+ * <strong>Example:</strong>
+ *
+ * @code
+ * op = output_protection->Create(instance);
+ * output_protection->QueryStatus(op, &link_mask, &protection_mask,
+ *                                done_callback);
+ * @endcode
+ *
+ * In this example, the plugin wants to enforce HDCP for HDMI link.
+ * @code
+ * if (link_mask & PP_OUTPUT_PROTECTION_LINK_TYPE_PRIVATE_HDMI) {
+ *   output_protection->EnableProtection(
+ *       op, PP_OUTPUT_PROTECTION_METHOD_PRIVATE_HDCP, done_callback);
+ * }
+ * @endcode
+ *
+ * After EnableProtection() completes, the plugin has to query protection
+ * status periodically to make sure the protection is enabled and remains
+ * enabled.
+ */
+struct PPB_OutputProtection_Private_0_1 {
+  /**
+   * Create() creates a new <code>PPB_OutputProtection_Private</code> object.
+   *
+   * @pram[in] instance A <code>PP_Instance</code> identifying one instance of
+   * a module.
+   *
+   * @return A <code>PP_Resource</code> corresponding to a
+   * <code>PPB_OutputProtection_Private</code> if successful, 0 if creation
+   * failed.
+   */
+  PP_Resource (*Create)(PP_Instance instance);
+  /**
+   * IsOutputProtection() determines if the provided resource is a
+   * <code>PPB_OutputProtection_Private</code>.
+   *
+   * @param[in] resource A <code>PP_Resource</code> corresponding to a
+   * <code>PPB_OutputProtection_Private</code>.
+   *
+   * @return <code>PP_TRUE</code> if the resource is a
+   * <code>PPB_OutputProtection_Private</code>, <code>PP_FALSE</code> if the
+   * resource is invalid or some type other than
+   * <code>PPB_OutputProtection_Private</code>.
+   */
+  PP_Bool (*IsOutputProtection)(PP_Resource resource);
+  /**
+   * Query link status and protection status.
+   * Clients have to query status periodically in order to detect changes.
+   *
+   * @param[in] resource A <code>PP_Resource</code> corresponding to a
+   * <code>PPB_OutputProtection_Private</code>.
+   * @param[out] link_mask The type of connected output links, which is a
+   * bit-mask of the <code>PP_OutputProtectionLinkType_Private</code> values.
+   * @param[out] protection_mask Enabled protection methods, which is a
+   * bit-mask of the <code>PP_OutputProtectionMethod_Private</code> values.
+   * @param[in] callback A <code>PP_CompletionCallback</code> to run on
+   * asynchronous completion of QueryStatus(). This callback will only run if
+   * QueryStatus() returns <code>PP_OK_COMPLETIONPENDING</code>.
+   *
+   * @return An int32_t containing an error code from <code>pp_errors.h</code>.
+   */
+  int32_t (*QueryStatus)(PP_Resource resource,
+                         uint32_t* link_mask,
+                         uint32_t* protection_mask,
+                         struct PP_CompletionCallback callback);
+  /**
+   * Set desired protection methods.
+   *
+   * When the desired protection method(s) have been applied to all applicable
+   * output links, the relevant bit(s) of the protection_mask returned by
+   * QueryStatus() will be set. Otherwise, the relevant bit(s) of
+   * protection_mask will not be set; there is no separate error code or
+   * callback.
+   *
+   * Protections will be disabled if no longer desired by all instances.
+   *
+   * @param[in] resource A <code>PP_Resource</code> corresponding to a
+   * <code>PPB_OutputProtection_Private</code>.
+   * @param[in] desired_protection_mask The desired protection methods, which
+   * is a bit-mask of the <code>PP_OutputProtectionMethod_Private</code>
+   * values.
+   * @param[in] callback A <code>PP_CompletionCallback</code> to be called when
+   * the protection request has been made. This may be before the protection
+   * have actually been applied. Call QueryStatus to get protection status.
+   *
+   * @return An int32_t containing an error code from <code>pp_errors.h</code>.
+   */
+  int32_t (*EnableProtection)(PP_Resource resource,
+                              uint32_t desired_protection_mask,
+                              struct PP_CompletionCallback callback);
+};
+
+typedef struct PPB_OutputProtection_Private_0_1 PPB_OutputProtection_Private;
+/**
+ * @}
+ */
+
+#endif  /* PPAPI_C_PRIVATE_PPB_OUTPUT_PROTECTION_PRIVATE_H_ */
+