Bug 1213517 - add webidl for track.getConstraints() and track.getSettings(). r=smaug

MozReview-Commit-ID: D15Lo3e1giL

--HG--
extra : rebase_source : 9a9ce6900dae6dc1e9a80e0c67577da4aab44437

dom/media/MediaStreamTrack.cpp

@@ -250,6 +250,16 @@ MediaStreamTrack::Stop()
   mReadyState = MediaStreamTrackState::Ended;
 }
 
+void MediaStreamTrack::GetConstraints(dom::MediaTrackConstraints& aResult)
+{
+  aResult = mConstraints;
+}
+
+void MediaStreamTrack::GetSettings(dom::MediaTrackSettings& aResult)
+{
+  aResult = mSettings;
+}
+
 already_AddRefed<Promise>
 MediaStreamTrack::ApplyConstraints(const MediaTrackConstraints& aConstraints,
                                    ErrorResult &aRv)

dom/media/MediaStreamTrack.h

@@ -14,6 +14,8 @@
 #include "MediaTrackConstraints.h"
 #include "mozilla/CORSMode.h"
 #include "PrincipalChangeObserver.h"
+#include "mozilla/dom/MediaStreamTrackBinding.h"
+#include "mozilla/dom/MediaTrackSettingsBinding.h"
 
 namespace mozilla {
 
@@ -263,6 +265,9 @@ public:
   bool Enabled() { return mEnabled; }
   void SetEnabled(bool aEnabled);
   void Stop();
+  void GetConstraints(dom::MediaTrackConstraints& aResult);
+  void GetSettings(dom::MediaTrackSettings& aResult);
+
   already_AddRefed<Promise>
   ApplyConstraints(const dom::MediaTrackConstraints& aConstraints, ErrorResult &aRv);
   already_AddRefed<MediaStreamTrack> Clone();
@@ -426,6 +431,8 @@ protected:
   MediaStreamTrackState mReadyState;
   bool mEnabled;
   const bool mRemote;
+  dom::MediaTrackConstraints mConstraints;
+  dom::MediaTrackSettings mSettings;
 };
 
 } // namespace dom

dom/webidl/MediaStreamTrack.webidl

@@ -84,8 +84,8 @@ interface MediaStreamTrack : EventTarget {
     MediaStreamTrack       clone ();
     void                   stop ();
 //  MediaTrackCapabilities getCapabilities ();
-//  MediaTrackConstraints  getConstraints ();
-//  MediaTrackSettings     getSettings ();
+    MediaTrackConstraints  getConstraints ();
+    MediaTrackSettings     getSettings ();
 
     [Throws]
     Promise<void>          applyConstraints (optional MediaTrackConstraints constraints);

dom/webidl/MediaTrackSettings.webidl

@@ -0,0 +1,33 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/.
+ *
+ * The origin of this IDL file is
+ * http://w3c.github.io/mediacapture-main/getusermedia.html
+ */
+
+dictionary MediaTrackSettings {
+    long      width;
+    long      height;
+    double    frameRate;
+    DOMString facingMode;
+    DOMString deviceId;
+
+    // Mozilla-specific extensions:
+
+    // http://fluffy.github.io/w3c-screen-share/#screen-based-video-constraints
+    // OBE by http://w3c.github.io/mediacapture-screen-share
+
+    DOMString mediaSource;
+
+    // Experimental https://bugzilla.mozilla.org/show_bug.cgi?id=1131568#c3
+    //              https://bugzilla.mozilla.org/show_bug.cgi?id=1193075
+
+    long long browserWindow;
+    boolean scrollWithPage;
+    long viewportOffsetX;
+    long viewportOffsetY;
+    long viewportWidth;
+    long viewportHeight;
+};

dom/webidl/moz.build

@@ -306,6 +306,7 @@ WEBIDL_FILES = [
     'MediaStreamError.webidl',
     'MediaStreamTrack.webidl',
     'MediaTrackConstraintSet.webidl',
+    'MediaTrackSettings.webidl',
     'MediaTrackSupportedConstraints.webidl',
     'MenuBoxObject.webidl',
     'MessageChannel.webidl',