content/browser/renderer_host/media/media_stream_requester.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_REQUESTER_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_REQUESTER_H_
   7
   8 #include <string>
   9
  10 #include "content/common/content_export.h"
  11 #include "content/common/media/media_stream_options.h"
  12
  13 namespace content {
  14
  15 // MediaStreamRequester must be implemented by the class requesting a new media
  16 // stream to be opened. MediaStreamManager will use this interface to signal
  17 // success and error for a request.
  18 class CONTENT_EXPORT MediaStreamRequester {
  19  public:
  20   // Called as a reply of a successful call to GenerateStream.
  21   virtual void StreamGenerated(const std::string& label,
  22                                const StreamDeviceInfoArray& audio_devices,
  23                                const StreamDeviceInfoArray& video_devices) = 0;
  24   // Called if GenerateStream failed or if stream has been stopped by the user.
  25   // TODO(sergeyu): Rename this method and corresponding IPC message or maybe
  26   // add a separate IPC message.
  27   virtual void StreamGenerationFailed(const std::string& label) = 0;
  28
  29   // Called as a reply of a successful call to EnumerateDevices.
  30   virtual void DevicesEnumerated(const std::string& label,
  31                                  const StreamDeviceInfoArray& devices) = 0;
  32   // Called as a reply of a successful call to OpenDevice.
  33   virtual void DeviceOpened(const std::string& label,
  34                             const StreamDeviceInfo& device_info) = 0;
  35
  36  protected:
  37   virtual ~MediaStreamRequester() {
  38   }
  39 };
  40
  41 }  // namespace content
  42
  43 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_REQUESTER_H_