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content / public / renderer / key_system_support.cc [blame]
// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/public/renderer/key_system_support.h"
#include "base/logging.h"
#include "content/public/renderer/render_thread.h"
#include "content/renderer/render_frame_impl.h"
#include "media/base/key_systems_support_registration.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "mojo/public/cpp/bindings/self_owned_receiver.h"
namespace content {
namespace {
class KeySystemSupportObserverImpl
: public media::KeySystemSupportRegistration,
public media::mojom::KeySystemSupportObserver {
public:
KeySystemSupportObserverImpl(
media::KeySystemSupportCB cb,
mojo::PendingReceiver<media::mojom::KeySystemSupportObserver> receiver)
: key_system_support_cb_(std::move(cb)),
receiver_(this, std::move(receiver)) {}
KeySystemSupportObserverImpl(const KeySystemSupportObserverImpl&) = delete;
KeySystemSupportObserverImpl& operator=(const KeySystemSupportObserverImpl&) =
delete;
~KeySystemSupportObserverImpl() override = default;
// media::mojom::KeySystemSupportObserver
void OnKeySystemSupportUpdated(
const KeySystemCapabilities& key_system_capabilities) final {
key_system_support_cb_.Run(std::move(key_system_capabilities));
}
private:
media::KeySystemSupportCB key_system_support_cb_;
mojo::Receiver<media::mojom::KeySystemSupportObserver> receiver_;
};
} // namespace
std::unique_ptr<media::KeySystemSupportRegistration>
ObserveKeySystemSupportUpdate(content::RenderFrame* render_frame,
media::KeySystemSupportCB cb) {
DVLOG(1) << __func__;
// `key_system_support` will stay alive as long as the returned value of this
// function is not destructed by the caller.
mojo::Remote<media::mojom::KeySystemSupport> key_system_support;
RenderFrameImpl* impl = static_cast<RenderFrameImpl*>(render_frame);
impl->GetBrowserInterfaceBroker().GetInterface(
key_system_support.BindNewPipeAndPassReceiver());
mojo::PendingRemote<media::mojom::KeySystemSupportObserver> observer_remote;
std::unique_ptr<media::KeySystemSupportRegistration>
key_system_support_registration =
std::make_unique<KeySystemSupportObserverImpl>(
std::move(cb), observer_remote.InitWithNewPipeAndPassReceiver());
key_system_support->AddObserver(std::move(observer_remote));
return key_system_support_registration;
}
} // namespace content