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

services/media/framework_mojo/audio_track_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_AUDIO_TRACK_PRODUCER_H_
+#define SERVICES_MEDIA_FRAMEWORK_MOJO_AUDIO_TRACK_PRODUCER_H_
+
+#include "services/media/framework_mojo/push_producer_base.h"
+
+namespace mojo {
+namespace media {
+
+// Delivers a stream to an audio track's MediaPipe.
+class AudioTrackProducer : public PushProducerBase {
+ public:
+  using FlushPipeCallback = mojo::Callback<void()>;
+
+  static std::shared_ptr<AudioTrackProducer> Create(
+      MediaPipePtr pipe) {
+    return std::shared_ptr<AudioTrackProducer>(
+        new AudioTrackProducer(pipe.Pass()));
+  }
+
+  ~AudioTrackProducer() override;
+
+  // Tells the connected pipe to flush.
+  void FlushPipe(const FlushPipeCallback& callback);
+
+ protected:
+  // PushProducerBase overrrides.
+  bool IsConnected() override;
+
+  void PushPacketInternal(Packet* packet_raw_ptr, MediaPacketPtr media_packet)
+      override;
+
+ private:
+  AudioTrackProducer(MediaPipePtr pipe);
+
+  MediaPipePtr pipe_;
+};
+
+}  // namespace media
+}  // namespace mojo
+
+#endif  // SERVICES_MEDIA_FRAMEWORK_MOJO_AUDIO_TRACK_PRODUCER_SINK_H_