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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /dom/media/webrtc/libwebrtcglue/WebrtcCallWrapper.h
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/media/webrtc/libwebrtcglue/WebrtcCallWrapper.h')
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef DOM_MEDIA_WEBRTC_LIBWEBRTCGLUE_WEBRTCCALLWRAPPER_H_
+#define DOM_MEDIA_WEBRTC_LIBWEBRTCGLUE_WEBRTCCALLWRAPPER_H_
+
+#include <set>
+
+#include "domstubs.h"
+#include "jsapi/RTCStatsReport.h"
+#include "nsISupportsImpl.h"
+#include "SystemTime.h"
+
+// libwebrtc includes
+#include "api/video/builtin_video_bitrate_allocator_factory.h"
+#include "call/call.h"
+#include "call/call_config.h"
+
+namespace mozilla {
+class AbstractThread;
+class MediaSessionConduit;
+class SharedWebrtcState;
+
+namespace media {
+class ShutdownBlockingTicket;
+}
+
+// Wrap the webrtc.org Call class adding mozilla add/ref support.
+class WebrtcCallWrapper {
+ public:
+ typedef webrtc::CallConfig Config;
+
+ static RefPtr<WebrtcCallWrapper> Create(
+ const dom::RTCStatsTimestampMaker& aTimestampMaker,
+ UniquePtr<media::ShutdownBlockingTicket> aShutdownTicket,
+ const RefPtr<SharedWebrtcState>& aSharedState);
+
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(WebrtcCallWrapper)
+
+ // Don't allow copying/assigning.
+ WebrtcCallWrapper(const WebrtcCallWrapper&) = delete;
+ void operator=(const WebrtcCallWrapper&) = delete;
+
+ void SetCall(UniquePtr<webrtc::Call> aCall);
+
+ webrtc::Call* Call() const;
+
+ void UnsetRemoteSSRC(uint32_t aSsrc);
+
+ // Idempotent.
+ void RegisterConduit(MediaSessionConduit* conduit);
+
+ // Idempotent.
+ void UnregisterConduit(MediaSessionConduit* conduit);
+
+ // Allow destroying the Call instance on the Call worker thread.
+ //
+ // Note that shutdown is blocked until the Call instance is destroyed.
+ //
+ // This CallWrapper is designed to be sharable, and is held by several objects
+ // that are cycle-collectable. TaskQueueWrapper that the Call instances use
+ // for worker threads are based off SharedThreadPools, and will block
+ // xpcom-shutdown-threads until destroyed. The Call instance however will hold
+ // on to its worker threads until destruction.
+ //
+ // If the last ref to this CallWrapper is held to cycle collector shutdown we
+ // end up in a deadlock where cycle collector shutdown is required to destroy
+ // the SharedThreadPool that is blocking xpcom-shutdown-threads from finishing
+ // and triggering cycle collector shutdown.
+ //
+ // It would be nice to have the invariant where this class is immutable to the
+ // degree that mCall is const, but given the above that is not possible.
+ void Destroy();
+
+ const dom::RTCStatsTimestampMaker& GetTimestampMaker() const;
+
+ protected:
+ virtual ~WebrtcCallWrapper();
+
+ WebrtcCallWrapper(RefPtr<SharedWebrtcState> aSharedState,
+ UniquePtr<webrtc::VideoBitrateAllocatorFactory>
+ aVideoBitrateAllocatorFactory,
+ UniquePtr<webrtc::RtcEventLog> aEventLog,
+ UniquePtr<webrtc::TaskQueueFactory> aTaskQueueFactory,
+ const dom::RTCStatsTimestampMaker& aTimestampMaker,
+ UniquePtr<media::ShutdownBlockingTicket> aShutdownTicket);
+
+ const RefPtr<SharedWebrtcState> mSharedState;
+
+ // Allows conduits to know about one another, to avoid remote SSRC
+ // collisions.
+ std::set<RefPtr<MediaSessionConduit>> mConduits;
+ RTCStatsTimestampMakerRealtimeClock mClock;
+ UniquePtr<media::ShutdownBlockingTicket> mShutdownTicket;
+
+ public:
+ const RefPtr<AbstractThread> mCallThread;
+ const RefPtr<webrtc::AudioDecoderFactory> mAudioDecoderFactory;
+ const UniquePtr<webrtc::VideoBitrateAllocatorFactory>
+ mVideoBitrateAllocatorFactory;
+ const UniquePtr<webrtc::RtcEventLog> mEventLog;
+ const UniquePtr<webrtc::TaskQueueFactory> mTaskQueueFactory;
+
+ protected:
+ // Call worker thread only.
+ UniquePtr<webrtc::Call> mCall;
+};
+
+} // namespace mozilla
+
+#endif