Motown in-proc streaming framework used to implement media services.

services/media/framework/stages/active_sink_stage.h

Index: services/media/framework/stages/active_sink_stage.h
diff --git a/services/media/framework/stages/active_sink_stage.h b/services/media/framework/stages/active_sink_stage.h
new file mode 100644
index 0000000000000000000000000000000000000000..273773ab9f55677ccfb38d200fbac7e55b587beb
--- /dev/null
+++ b/services/media/framework/stages/active_sink_stage.h
@@ -0,0 +1,40 @@
+// Copyright 2016 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.
+
+#ifndef SERVICES_MEDIA_FRAMEWORK_ENGINE_ACTIVE_SINK_STAGE_H_
+#define SERVICES_MEDIA_FRAMEWORK_ENGINE_ACTIVE_SINK_STAGE_H_
+
+#include <deque>
+
+#include "services/media/framework/models/active_sink.h"
+#include "services/media/framework/stages/stage.h"
+
+namespace mojo {
+namespace media {
+
+// A stage that hosts an ActiveSink.
+class ActiveSinkStage : public SinkStage, public SingleInputStage {

[johngro, 2016/01/26 23:47:29]

see comments in stage.h about MI, this applies to most of the stage/* classes

[dalesat, 2016/01/28 18:49:16]

Acknowledged.

+ public:
+  ActiveSinkStage(ActiveSinkPtr source);
+
+  ~ActiveSinkStage() override;
+
+  // Stage implementation.
+  bool Prepare(UpdateCallback update_callback) override;
+
+  void Prime() override;
+
+  void Update(Engine* engine) override;
+
+ private:
+  ActiveSinkPtr sink_;
+  ActiveSink::DemandCallback demand_function_;
+  Stage::UpdateCallback update_callback_;
+  Demand sink_demand_;
+};
+
+}  // namespace media
+}  // namespace mojo
+
+#endif  // SERVICES_MEDIA_FRAMEWORK_ENGINE_ACTIVE_SINK_STAGE_H_