content/renderer/pepper/ppb_audio_impl.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_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_