Mojom updates for Motown.

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

+// 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();
+};
+
+// 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;
+};