Motown: Framework parts for mojo transport (producer/consumer/mediapipe) and control (audiotrack).

services/media/framework_mojo/mojo_producer.h

+// 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_MOJO_MOJO_PRODUCER_SINK_H_
+#define SERVICES_MEDIA_FRAMEWORK_MOJO_MOJO_PRODUCER_SINK_H_
+
+#include "mojo/common/binding_set.h"
+#include "mojo/services/media/common/interfaces/media_transport.mojom.h"
+#include "services/media/framework_mojo/push_producer_base.h"
+
+namespace mojo {
+namespace media {
+
+// Implements MediaProducer to forward a stream across mojo.
+class MojoProducer : public MediaProducer, public PushProducerBase {
+ public:
+  using FlushConsumerCallback = mojo::Callback<void()>;
+
+  static std::shared_ptr<MojoProducer> Create() {
+    return std::shared_ptr<MojoProducer>(new MojoProducer());
+  }
+
+  ~MojoProducer() override;
+
+  // Adds a binding.
+  void AddBinding(InterfaceRequest<MediaProducer> producer);
+
+  // Tells the connected consumer to flush.
+  void FlushConsumer(const FlushConsumerCallback& callback);
+
+  // MediaProducer implementation.
+  void Connect(
+      InterfaceHandle<MediaConsumer> consumer,
+      const ConnectCallback& callback) override;
+
+  void Disconnect() override;
+
+ protected:
+  // PushProducerBase overrrides.
+  bool IsConnected() override;
+
+  void PushPacketInternal(Packet* packet_raw_ptr, MediaPacketPtr media_packet)
+      override;
+
+ private:
+  MojoProducer();
+
+  BindingSet<MediaProducer> bindings_;
+  MediaConsumerPtr consumer_;
+};
+
+}  // namespace media
+}  // namespace mojo
+
+#endif  // SERVICES_MEDIA_FRAMEWORK_MOJO_MOJO_PRODUCER_SINK_H_