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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_RENDERER_PEPPER_PPB_AUDIO_IMPL_H_
      6 #define CONTENT_RENDERER_PEPPER_PPB_AUDIO_IMPL_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/memory/ref_counted.h"
     10 #include "base/memory/shared_memory.h"
     11 #include "base/sync_socket.h"
     12 #include "content/renderer/pepper/audio_helper.h"
     13 #include "ppapi/c/pp_completion_callback.h"
     14 #include "ppapi/c/ppb_audio.h"
     15 #include "ppapi/c/ppb_audio_config.h"
     16 #include "ppapi/shared_impl/ppb_audio_config_shared.h"
     17 #include "ppapi/shared_impl/ppb_audio_shared.h"
     18 #include "ppapi/shared_impl/resource.h"
     19 #include "ppapi/shared_impl/scoped_pp_resource.h"
     20 
     21 namespace content {
     22 class PepperPlatformAudioOutput;
     23 
     24 // Some of the backend functionality of this class is implemented by the
     25 // PPB_Audio_Shared so it can be shared with the proxy.
     26 //
     27 // TODO(teravest): PPB_Audio is no longer supported in-process. Clean this up
     28 // to look more like typical HostResource implementations.
     29 class PPB_Audio_Impl : public ppapi::Resource,
     30                        public ppapi::PPB_Audio_Shared,
     31                        public AudioHelper {
     32  public:
     33   explicit PPB_Audio_Impl(PP_Instance instance);
     34 
     35   // Resource overrides.
     36   virtual ppapi::thunk::PPB_Audio_API* AsPPB_Audio_API() OVERRIDE;
     37 
     38   // PPB_Audio_API implementation.
     39   virtual PP_Resource GetCurrentConfig() OVERRIDE;
     40   virtual PP_Bool StartPlayback() OVERRIDE;
     41   virtual PP_Bool StopPlayback() OVERRIDE;
     42   virtual int32_t Open(PP_Resource config_id,
     43                        scoped_refptr<ppapi::TrackedCallback> create_callback)
     44       OVERRIDE;
     45   virtual int32_t GetSyncSocket(int* sync_socket) OVERRIDE;
     46   virtual int32_t GetSharedMemory(int* shm_handle, uint32_t* shm_size) OVERRIDE;
     47 
     48  private:
     49   virtual ~PPB_Audio_Impl();
     50 
     51   // AudioHelper implementation.
     52   virtual void OnSetStreamInfo(base::SharedMemoryHandle shared_memory_handle,
     53                                size_t shared_memory_size_,
     54                                base::SyncSocket::Handle socket) OVERRIDE;
     55 
     56   // AudioConfig used for creating this Audio object. We own a ref.
     57   ppapi::ScopedPPResource config_;
     58 
     59   // PluginDelegate audio object that we delegate audio IPC through. We don't
     60   // own this pointer but are responsible for calling Shutdown on it.
     61   PepperPlatformAudioOutput* audio_;
     62 
     63   DISALLOW_COPY_AND_ASSIGN(PPB_Audio_Impl);
     64 };
     65 
     66 }  // namespace content
     67 
     68 #endif  // CONTENT_RENDERER_PEPPER_PPB_AUDIO_IMPL_H_
     69