| // 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 "chrome/browser/media/router/presentation/presentation_media_sinks_observer.h" |
| |
| #include "chrome/browser/media/router/media_router.h" |
| #include "chrome/common/media_router/media_source.h" |
| #include "content/public/browser/presentation_screen_availability_listener.h" |
| |
| namespace media_router { |
| |
| PresentationMediaSinksObserver::PresentationMediaSinksObserver( |
| MediaRouter* router, |
| content::PresentationScreenAvailabilityListener* listener, |
| const MediaSource& source, |
| const url::Origin& origin) |
| : MediaSinksObserver(router, source, origin), |
| listener_(listener), |
| previous_availability_(blink::mojom::ScreenAvailability::UNKNOWN) { |
| DCHECK(router); |
| DCHECK(listener_); |
| } |
| |
| PresentationMediaSinksObserver::~PresentationMediaSinksObserver() {} |
| |
| void PresentationMediaSinksObserver::OnSinksReceived( |
| const std::vector<MediaSink>& result) { |
| blink::mojom::ScreenAvailability current_availability = |
| result.empty() ? blink::mojom::ScreenAvailability::UNAVAILABLE |
| : blink::mojom::ScreenAvailability::AVAILABLE; |
| |
| DVLOG(1) << "PresentationMediaSinksObserver::OnSinksReceived: " |
| << source().ToString() << " " |
| << (result.empty() ? "unavailable" : "available"); |
| |
| // Don't send if new result is same as previous. |
| if (previous_availability_ == current_availability) |
| return; |
| |
| listener_->OnScreenAvailabilityChanged(current_availability); |
| previous_availability_ = current_availability; |
| } |
| |
| } // namespace media_router |