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      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_COMMON_MEDIA_MEDIA_STREAM_OPTIONS_H_
      6 #define CONTENT_COMMON_MEDIA_MEDIA_STREAM_OPTIONS_H_
      7 
      8 #include <string>
      9 #include <vector>
     10 
     11 #include "content/common/content_export.h"
     12 #include "content/public/common/media_stream_request.h"
     13 
     14 namespace content {
     15 
     16 // MediaStreamConstraint keys for constraints that are passed to getUserMedia.
     17 CONTENT_EXPORT extern const char kMediaStreamSource[];
     18 CONTENT_EXPORT extern const char kMediaStreamSourceId[];
     19 CONTENT_EXPORT extern const char kMediaStreamSourceInfoId[];
     20 CONTENT_EXPORT extern const char kMediaStreamSourceTab[];
     21 CONTENT_EXPORT extern const char kMediaStreamSourceScreen[];
     22 CONTENT_EXPORT extern const char kMediaStreamSourceSystem[];
     23 
     24 // StreamOptions is a Chromium representation of WebKit's
     25 // WebUserMediaRequest Options. It describes the components
     26 // in a request for a new media stream.
     27 struct CONTENT_EXPORT StreamOptions {
     28   StreamOptions();
     29   StreamOptions(MediaStreamType audio_type, MediaStreamType video_type);
     30 
     31   // If not NO_SERVICE, the stream shall contain an audio input stream.
     32   MediaStreamType audio_type;
     33   std::string audio_device_id;
     34 
     35   // If not NO_SERVICE, the stream shall contain a video input stream.
     36   MediaStreamType video_type;
     37   std::string video_device_id;
     38 };
     39 
     40 // StreamDeviceInfo describes information about a device.
     41 struct CONTENT_EXPORT StreamDeviceInfo {
     42   static const int kNoId;
     43 
     44   StreamDeviceInfo();
     45   StreamDeviceInfo(MediaStreamType service_param,
     46                    const std::string& name_param,
     47                    const std::string& device_param,
     48                    bool opened);
     49   StreamDeviceInfo(MediaStreamType service_param,
     50                    const std::string& name_param,
     51                    const std::string& device_param,
     52                    int sample_rate,
     53                    int channel_layout,
     54                    bool opened);
     55   static bool IsEqual(const StreamDeviceInfo& first,
     56                       const StreamDeviceInfo& second);
     57 
     58   MediaStreamDevice device;
     59   // Set to true if the device has been opened, false otherwise.
     60   bool in_use;
     61   // Id for this capture session. Unique for all sessions of the same type.
     62   int session_id;
     63 };
     64 
     65 typedef std::vector<StreamDeviceInfo> StreamDeviceInfoArray;
     66 
     67 }  // namespace content
     68 
     69 #endif  // CONTENT_COMMON_MEDIA_MEDIA_STREAM_OPTIONS_H_
     70