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

services/media/framework/stages/distributor_stage.h

Index: services/media/framework/stages/distributor_stage.h
diff --git a/services/media/framework/stages/distributor_stage.h b/services/media/framework/stages/distributor_stage.h
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index 0000000000000000000000000000000000000000..c608ffeca1ced2bf3e4ab0484e537230f606e848
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+++ b/services/media/framework/stages/distributor_stage.h
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+// 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_DISTRIBUTOR_STAGE_H_
+#define SERVICES_MEDIA_FRAMEWORK_ENGINE_DISTRIBUTOR_STAGE_H_
+
+#include <vector>
+
+#include "services/media/framework/models/multistream_packet_source.h"
+#include "services/media/framework/stages/stage.h"
+
+namespace mojo {
+namespace media {
+
+// A stage that hosts a MultiStreamPacketSource.
+class DistributorStage : public Stage {
+ public:
+  DistributorStage(MultiStreamPacketSourcePtr packet_source);
+
+  ~DistributorStage() override;
+
+  // Stage implementation.
+  uint32_t input_count() const override;
+
+  StageInput& input(uint32_t index) override;
+
+  uint32_t output_count() const override;
+
+  StageOutput& output(uint32_t index) override;
+
+  bool Prepare(UpdateCallback update_callback) override;
+
+  void Update(Engine* engine) override;
+
+ private:
+  std::vector<StageOutput> outputs_;
+  MultiStreamPacketSourcePtr packet_source_;
+  PacketPtr cached_packet_;
+  uint32_t cached_packet_output_index_;
+  uint32_t ended_streams_;
+};
+
+}  // namespace media
+}  // namespace mojo
+
+#endif  // SERVICES_MEDIA_FRAMEWORK_ENGINE_DISTRIBUTOR_STAGE_H_