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      1 // Copyright 2014 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 PPAPI_PROXY_MEDIA_STREAM_TRACK_RESOURCE_BASE_H_
      6 #define PPAPI_PROXY_MEDIA_STREAM_TRACK_RESOURCE_BASE_H_
      7 
      8 #include "ppapi/proxy/plugin_resource.h"
      9 #include "ppapi/proxy/ppapi_proxy_export.h"
     10 #include "ppapi/shared_impl/media_stream_buffer_manager.h"
     11 
     12 namespace ppapi {
     13 namespace proxy {
     14 
     15 class PPAPI_PROXY_EXPORT MediaStreamTrackResourceBase
     16   : public PluginResource,
     17     public MediaStreamBufferManager::Delegate {
     18  protected:
     19   MediaStreamTrackResourceBase(Connection connection,
     20                                PP_Instance instance,
     21                                int pending_renderer_id,
     22                                const std::string& id);
     23 
     24   MediaStreamTrackResourceBase(Connection connection, PP_Instance instance);
     25 
     26   virtual ~MediaStreamTrackResourceBase();
     27 
     28   std::string id() const { return id_; }
     29 
     30   void set_id(const std::string& id) { id_ = id; }
     31 
     32   bool has_ended() const { return has_ended_; }
     33 
     34   MediaStreamBufferManager* buffer_manager() { return &buffer_manager_; }
     35 
     36   void CloseInternal();
     37 
     38   // Sends a buffer index to the corresponding PepperMediaStreamTrackHostBase
     39   // via an IPC message. The host adds the buffer index into its
     40   // |buffer_manager_| for reading or writing.
     41   // Also see |MediaStreamBufferManager|.
     42   void SendEnqueueBufferMessageToHost(int32_t index);
     43 
     44   // PluginResource overrides:
     45   virtual void OnReplyReceived(const ResourceMessageReplyParams& params,
     46                                const IPC::Message& msg) OVERRIDE;
     47 
     48  private:
     49   // Message handlers:
     50   void OnPluginMsgInitBuffers(const ResourceMessageReplyParams& params,
     51                               int32_t number_of_buffers,
     52                               int32_t buffer_size,
     53                               bool readonly);
     54   void OnPluginMsgEnqueueBuffer(const ResourceMessageReplyParams& params,
     55                                 int32_t index);
     56   void OnPluginMsgEnqueueBuffers(const ResourceMessageReplyParams& params,
     57                                  const std::vector<int32_t>& indices);
     58 
     59   MediaStreamBufferManager buffer_manager_;
     60 
     61   std::string id_;
     62 
     63   bool has_ended_;
     64 
     65   DISALLOW_COPY_AND_ASSIGN(MediaStreamTrackResourceBase);
     66 };
     67 
     68 }  // namespace proxy
     69 }  // namespace ppapi
     70 
     71 #endif  // PPAPI_PROXY_MEDIA_STREAM_TRACK_RESOURCE_BASE_H_
     72