Mojom updates for Motown.

mojo/services/media/control/interfaces/media_sink.mojom

Index: mojo/services/media/control/interfaces/media_sink.mojom
diff --git a/mojo/services/media/control/interfaces/media_sink.mojom b/mojo/services/media/control/interfaces/media_sink.mojom
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+// 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.
+
+[DartPackage="mojo_services"]
+module mojo.media;
+
+import "mojo/services/media/common/interfaces/media_clock.mojom";
+import "mojo/services/media/common/interfaces/media_common.mojom";
+import "mojo/services/media/common/interfaces/media_state.mojom";
+import "mojo/services/media/common/interfaces/media_transport.mojom";
+import "mojo/services/media/common/interfaces/media_types.mojom";
+import "mojo/services/media/common/interfaces/rate_control.mojom";
+
+// TODO(dalesat): Define a media sink that multiplexes streams.
+
+// Consumes media streams and delivers them to specified destinations.
+interface MediaSink {
+  // TODO(dalesat): Support fanout to many destinations.
+
+  // Gets the clock disposition from the source.
+  GetClockDisposition() => (ClockDisposition clock_disposition);
+
+  // Gets a master clock if the sink can be master, null otherwise.
+  GetMasterClock(Clock& master_clock);
+
+  // Sets a master clock.
+  SetMasterClock(Clock? master_clock);
+
+  // Gets the consumer for the stream to be delivered.
+  GetConsumer(MediaConsumer& consumer);
+
+  // Gets the status. To get the status immediately, call GetStatus(0). To
+  // get updates thereafter, pass the version sent in the previous callback.
+  GetStatus(uint64 version_last_seen) =>
+      (uint64 version, MediaSinkStatus status);
+
+  // Starts playback.
+  Play();
+
+  // Pauses playback.
+  Pause();

[johngro, 2015/12/10 21:46:04]

similar question/comment as before.  Seems like play and pause should be
combined into some form of RateControl interface, or RateControlNotification
target, or something.

Something to talk about for the future.  Nothing to do here right now.

[dalesat, 2015/12/10 22:33:38]

Acknowledged.

+};
+
+// MediaSink status information.
+struct MediaSinkStatus {
+  // Current state of the sink.
+  MediaState state;
+
+  // Transform translating local time to presentation time. Reverse translation
+  // (presentation time to local time) is only valid when media is playing.
+  TimelineTransform? timeline_transform;
+};