content/renderer/pepper/pepper_media_device_manager.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_RENDERER_PEPPER_PEPPER_MEDIA_DEVICE_MANAGER_H_
   6 #define CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_DEVICE_MANAGER_H_
   7
   8 #include <map>
   9
  10 #include "base/memory/weak_ptr.h"
  11 #include "content/renderer/media/media_stream_dispatcher_eventhandler.h"
  12 #include "content/renderer/pepper/pepper_device_enumeration_host_helper.h"
  13 #include "content/public/renderer/render_view_observer_tracker.h"
  14 #include "content/public/renderer/render_view_observer.h"
  15
  16 namespace content {
  17 class RenderViewImpl;
  18
  19 class PepperMediaDeviceManager
  20     : public MediaStreamDispatcherEventHandler,
  21       public PepperDeviceEnumerationHostHelper::Delegate,
  22       public RenderViewObserver,
  23       public RenderViewObserverTracker<PepperMediaDeviceManager>,
  24       public base::SupportsWeakPtr<PepperMediaDeviceManager> {
  25  public:
  26   static PepperMediaDeviceManager* GetForRenderView(RenderView* render_view);
  27   virtual ~PepperMediaDeviceManager();
  28
  29   // PepperDeviceEnumerationHostHelper::Delegate implementation:
  30   virtual int EnumerateDevices(
  31       PP_DeviceType_Dev type,
  32       const EnumerateDevicesCallback& callback) OVERRIDE;
  33   virtual void StopEnumerateDevices(int request_id) OVERRIDE;
  34
  35   typedef base::Callback<void (int /* request_id */,
  36                                bool /* succeeded */,
  37                                const std::string& /* label */)>
  38       OpenDeviceCallback;
  39
  40   // Opens the specified device. The request ID passed into the callback will be
  41   // the same as the return value. If successful, the label passed into the
  42   // callback identifies a audio/video steam, which can be used to call
  43   // CloseDevice() and GetSesssionID().
  44   int OpenDevice(PP_DeviceType_Dev type,
  45                  const std::string& device_id,
  46                  const GURL& document_url,
  47                  const OpenDeviceCallback& callback);
  48   // Cancels an request to open device, using the request ID returned by
  49   // OpenDevice(). It is guaranteed that the callback passed into OpenDevice()
  50   // won't be called afterwards.
  51   void CancelOpenDevice(int request_id);
  52   void CloseDevice(const std::string& label);
  53   // Gets audio/video session ID given a label.
  54   int GetSessionID(PP_DeviceType_Dev type, const std::string& label);
  55
  56   // MediaStreamDispatcherEventHandler implementation.
  57   virtual void OnStreamGenerated(
  58       int request_id,
  59       const std::string& label,
  60       const StreamDeviceInfoArray& audio_device_array,
  61       const StreamDeviceInfoArray& video_device_array) OVERRIDE;
  62   virtual void OnStreamGenerationFailed(int request_id) OVERRIDE;
  63   virtual void OnStopGeneratedStream(const std::string& label) OVERRIDE;
  64   virtual void OnDevicesEnumerated(
  65       int request_id,
  66       const StreamDeviceInfoArray& device_array) OVERRIDE;
  67   virtual void OnDevicesEnumerationFailed(int request_id) OVERRIDE;
  68   virtual void OnDeviceOpened(
  69       int request_id,
  70       const std::string& label,
  71       const StreamDeviceInfo& device_info) OVERRIDE;
  72   virtual void OnDeviceOpenFailed(int request_id) OVERRIDE;
  73
  74   // Stream type conversion.
  75   static MediaStreamType FromPepperDeviceType(PP_DeviceType_Dev type);
  76   static PP_DeviceType_Dev FromMediaStreamType(MediaStreamType type);
  77
  78  private:
  79   PepperMediaDeviceManager(RenderView* render_view);
  80
  81   void NotifyDevicesEnumerated(
  82       int request_id,
  83       bool succeeded,
  84       const StreamDeviceInfoArray& device_array);
  85
  86   void NotifyDeviceOpened(int request_id,
  87                           bool succeeded,
  88                           const std::string& label);
  89
  90   RenderViewImpl* GetRenderViewImpl();
  91
  92   int next_id_;
  93
  94   typedef std::map<int, EnumerateDevicesCallback> EnumerateCallbackMap;
  95   EnumerateCallbackMap enumerate_callbacks_;
  96
  97   typedef std::map<int, OpenDeviceCallback> OpenCallbackMap;
  98   OpenCallbackMap open_callbacks_;
  99
 100   DISALLOW_COPY_AND_ASSIGN(PepperMediaDeviceManager);
 101 };
 102
 103 }  // namespace content
 104
 105 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_DEVICE_MANAGER_H_