media::mojom::Remoter and CastRemotingConnector/Sender

chrome/browser/media/router/media_remoting_provider.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 CHROME_BROWSER_MEDIA_ROUTER_MEDIA_REMOTING_PROVIDER_IMPL_H_
+#define CHROME_BROWSER_MEDIA_ROUTER_MEDIA_REMOTING_PROVIDER_IMPL_H_
+
+#include "base/callback.h"
+#include "media/mojo/interfaces/remoter.mojom.h"
+
+namespace media_router {
+
+// Interface for a provider of remote media services.
+class MediaRemotingProvider {
+ public:
+  // Returns the remote's capabilities if remote services are
+  // available. Otherwise, nullptr.
+  virtual const media::mojom::RemoteCapabilities*
+      GetRemoteCapabilities() const = 0;
+
+  // Requests that remote media services be started, returning true if
+  // successful. |audio_pipe| and |video_pipe| are handles to data pipes for
+  // consuming buffer data whenever SendBufferToRemote() is
+  // called. |message_callback| is run to dispatch messages received from the
+  // remote to the local implementation.
+  using RemoteMessageCallback = base::Callback<void(mojo::Array<uint8_t>)>;
+  virtual bool StartMediaServices(
+      mojo::ScopedDataPipeConsumerHandle audio_pipe,
+      mojo::ScopedDataPipeConsumerHandle video_pipe,
+      const RemoteMessageCallback& message_callback) = 0;
+
+  // Stops media remoting services. The data pipes provided in the call to
+  // StartMediaServices() are closed. If |error_reason| is non-empty, it
+  // contains a human-readable error message.
+  virtual void StopMediaServices(const mojo::String& error_reason) = 0;
+
+  // Sends a |message| or |buffer| to the remote. Messages are passed to the
+  // MediaRemotingProvider for transmission over the third-party messaging
+  // channel, which must be encrypted and reliable. Buffers are passed to the
+  // bitstream transport implementation.
+  virtual void SendMessageToRemote(mojo::Array<uint8_t> message) = 0;
+  virtual void SendBufferToRemote(uint32_t pipe_id,
+                                  media::mojom::DecoderBufferPtr buffer) = 0;
+
+ protected:
+  MediaRemotingProvider() {}
+  virtual ~MediaRemotingProvider() {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MediaRemotingProvider);
+};
+
+}  // namespace media_router
+
+#endif  // CHROME_BROWSER_MEDIA_ROUTER_MEDIA_REMOTING_PROVIDER_IMPL_H_