blob: bad2c865cca51c3fa968039cbad9b6c3adec3251 [file] [log] [blame]
// Copyright 2015 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 <stddef.h>
#include <stdint.h>
#include <map>
#include <vector>
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "ui/display/chromeos/display_configurator.h"
namespace ui {
class DisplayLayoutManager;
class DisplaySnapshot;
class NativeDisplayDelegate;
// In order to apply content protection the task executes in the following
// manner:
// 1) Run()
// a) Query NativeDisplayDelegate for HDCP state on capable displays
// b) OnHDCPStateUpdate() called for each display as response to (a)
// 2) ApplyProtections()
// a) Compute preferred HDCP state for capable displays
// b) Call into NativeDisplayDelegate to set HDCP state on capable displays
// c) OnHDCPStateApplied() called for each display as reponse to (b)
// 3) Call |callback_| to signal end of task.
// Note, in steps 1a and 2a, if no HDCP capable displays are found or if errors
// are reported, the task finishes early and skips to step 3.
class DISPLAY_EXPORT ApplyContentProtectionTask {
typedef base::Callback<void(bool)> ResponseCallback;
DisplayLayoutManager* layout_manager,
NativeDisplayDelegate* native_display_delegate,
const DisplayConfigurator::ContentProtections& requests,
const ResponseCallback& callback);
void Run();
// Callback to NatvieDisplayDelegate::GetHDCPState()
void OnHDCPStateUpdate(int64_t display_id, bool success, HDCPState state);
// Callback to NativeDisplayDelegate::SetHDCPState()
void OnHDCPStateApplied(bool success);
void ApplyProtections();
uint32_t GetDesiredProtectionMask(int64_t display_id) const;
DisplayLayoutManager* layout_manager_; // Not owned.
NativeDisplayDelegate* native_display_delegate_; // Not owned.
DisplayConfigurator::ContentProtections requests_;
// Callback used to respond once the task finishes.
ResponseCallback callback_;
// Mapping between display IDs and the HDCP state returned by
// NativeDisplayDelegate.
std::map<int64_t, HDCPState> display_hdcp_state_map_;
// Tracks the status of the NativeDisplayDelegate responses. This will be true
// if all the queries were successful, false otherwise.
bool query_status_;
// Tracks the number of NativeDisplayDelegate requests sent but not answered
// yet.
size_t pending_requests_;
base::WeakPtrFactory<ApplyContentProtectionTask> weak_ptr_factory_;
} // namespace ui