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(int render_view_id, 22 int page_request_id, 23 const std::string& label, 24 const StreamDeviceInfoArray& audio_devices, 25 const StreamDeviceInfoArray& video_devices) = 0; 26 // Called if GenerateStream failed. 27 virtual void StreamGenerationFailed( 28 int render_view_id, 29 int page_request_id, 30 content::MediaStreamRequestResult result) = 0; 31 // Called if a device has been stopped by a user from UI or the device 32 // has become unavailable. |render_view_id| is the render view that requested 33 // the device and |label| is the label of the request|. 34 virtual void DeviceStopped(int render_view_id, 35 const std::string& label, 36 const StreamDeviceInfo& device) = 0; 37 // Called as a reply of a successful call to EnumerateDevices. 38 virtual void DevicesEnumerated(int render_view_id, 39 int page_request_id, 40 const std::string& label, 41 const StreamDeviceInfoArray& devices) = 0; 42 // Called as a reply of a successful call to OpenDevice. 43 virtual void DeviceOpened(int render_view_id, 44 int page_request_id, 45 const std::string& label, 46 const StreamDeviceInfo& device_info) = 0; 47 48 protected: ~MediaStreamRequester()49 virtual ~MediaStreamRequester() { 50 } 51 }; 52 53 } // namespace content 54 55 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_REQUESTER_H_ 56