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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/display/manager/apply_content_protection_task.h"
#include <algorithm>
#include <utility>
#include <vector>
#include "base/functional/bind.h"
#include "base/memory/raw_ptr.h"
#include "ui/display/manager/display_layout_manager.h"
#include "ui/display/manager/util/display_manager_util.h"
#include "ui/display/types/display_snapshot.h"
#include "ui/display/types/native_display_delegate.h"
namespace display {
ApplyContentProtectionTask::ApplyContentProtectionTask(
DisplayLayoutManager* layout_manager,
NativeDisplayDelegate* native_display_delegate,
ContentProtectionManager::ContentProtections requests,
ResponseCallback callback)
: layout_manager_(layout_manager),
native_display_delegate_(native_display_delegate),
requests_(std::move(requests)),
callback_(std::move(callback)) {}
ApplyContentProtectionTask::~ApplyContentProtectionTask() {
if (callback_)
std::move(callback_).Run(Status::KILLED);
}
void ApplyContentProtectionTask::Run() {
std::vector<DisplaySnapshot*> hdcp_capable_displays;
for (DisplaySnapshot* display : layout_manager_->GetDisplayStates()) {
uint32_t protection_mask;
if (!GetContentProtectionMethods(display->type(), &protection_mask)) {
std::move(callback_).Run(Status::FAILURE);
return;
}
if (protection_mask & kContentProtectionMethodHdcpAll)
hdcp_capable_displays.push_back(display);
}
pending_requests_ = hdcp_capable_displays.size();
if (pending_requests_ == 0) {
std::move(callback_).Run(Status::SUCCESS);
return;
}
// Need to poll the driver for updates since other applications may have
// updated the state.
for (DisplaySnapshot* display : hdcp_capable_displays) {
native_display_delegate_->GetHDCPState(
*display,
base::BindOnce(&ApplyContentProtectionTask::OnGetHDCPState,
weak_ptr_factory_.GetWeakPtr(), display->display_id()));
}
}
void ApplyContentProtectionTask::OnGetHDCPState(
int64_t display_id,
bool success,
HDCPState state,
ContentProtectionMethod protection_method) {
success_ &= success;
bool hdcp_enabled = state != HDCP_STATE_UNDESIRED;
uint32_t desired_hdcp_protections =
GetDesiredProtectionMask(display_id) & kContentProtectionMethodHdcpAll;
// Remove Type 0 from the mask if Type 1 is there.
if (desired_hdcp_protections & CONTENT_PROTECTION_METHOD_HDCP_TYPE_1)
desired_hdcp_protections &= ~CONTENT_PROTECTION_METHOD_HDCP_TYPE_0;
if (hdcp_enabled != !!desired_hdcp_protections ||
desired_hdcp_protections != protection_method) {
ContentProtectionMethod new_method;
if (!desired_hdcp_protections)
new_method = CONTENT_PROTECTION_METHOD_NONE;
else if (desired_hdcp_protections & CONTENT_PROTECTION_METHOD_HDCP_TYPE_1)
new_method = CONTENT_PROTECTION_METHOD_HDCP_TYPE_1;
else
new_method = CONTENT_PROTECTION_METHOD_HDCP_TYPE_0;
hdcp_requests_.emplace_back(
display_id,
desired_hdcp_protections ? HDCP_STATE_DESIRED : HDCP_STATE_UNDESIRED,
new_method);
}
pending_requests_--;
// Wait for all the requests before continuing.
if (pending_requests_ != 0)
return;
if (!success_) {
std::move(callback_).Run(Status::FAILURE);
return;
}
pending_requests_ = hdcp_requests_.size();
// All the requested changes are the same as the current HDCP state. Nothing
// to do anymore, just ack the content protection change.
if (pending_requests_ == 0) {
std::move(callback_).Run(Status::SUCCESS);
return;
}
std::vector<raw_ptr<DisplaySnapshot, VectorExperimental>> displays =
layout_manager_->GetDisplayStates();
std::vector<std::tuple<DisplaySnapshot*, HDCPState, ContentProtectionMethod>>
hdcped_displays;
// Lookup the displays again since display configuration may have changed.
for (const auto& request : hdcp_requests_) {
auto it = std::ranges::find(displays, request.display_id,
&DisplaySnapshot::display_id);
if (it == displays.end()) {
std::move(callback_).Run(Status::FAILURE);
return;
}
hdcped_displays.emplace_back(*it, request.state, request.protection_method);
}
// In synchronous callback execution this task can be deleted from the last
// invocation of SetHDCPState(), thus the for-loop should not iterate over
// object specific state (eg: |hdcp_requests_|).
for (const auto& tuple : hdcped_displays) {
native_display_delegate_->SetHDCPState(
*std::get<0>(tuple), std::get<1>(tuple), std::get<2>(tuple),
base::BindOnce(&ApplyContentProtectionTask::OnSetHDCPState,
weak_ptr_factory_.GetWeakPtr()));
}
}
void ApplyContentProtectionTask::OnSetHDCPState(bool success) {
success_ &= success;
pending_requests_--;
if (pending_requests_ == 0)
std::move(callback_).Run(success_ ? Status::SUCCESS : Status::FAILURE);
}
uint32_t ApplyContentProtectionTask::GetDesiredProtectionMask(
int64_t display_id) const {
uint32_t desired_mask = 0;
// In mirror mode, protection request of all displays need to be fulfilled.
// In non-mirror mode, only request of client's display needs to be
// fulfilled.
if (layout_manager_->IsMirroring()) {
for (const auto& pair : requests_)
desired_mask |= pair.second;
} else {
auto it = requests_.find(display_id);
if (it != requests_.end())
desired_mask = it->second;
}
return desired_mask;
}
} // namespace display
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