content/renderer/pepper/pepper_audio_input_host.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_AUDIO_INPUT_HOST_H_
   6 #define CONTENT_RENDERER_PEPPER_PEPPER_AUDIO_INPUT_HOST_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/memory/shared_memory.h"
  14 #include "base/sync_socket.h"
  15 #include "content/renderer/pepper/pepper_device_enumeration_host_helper.h"
  16 #include "ipc/ipc_platform_file.h"
  17 #include "ppapi/c/ppb_audio_config.h"
  18 #include "ppapi/host/host_message_context.h"
  19 #include "ppapi/host/resource_host.h"
  20
  21 namespace content {
  22 class PepperPlatformAudioInput;
  23 class RendererPpapiHostImpl;
  24
  25 class PepperAudioInputHost : public ppapi::host::ResourceHost {
  26  public:
  27   PepperAudioInputHost(RendererPpapiHostImpl* host,
  28                        PP_Instance instance,
  29                        PP_Resource resource);
  30   virtual ~PepperAudioInputHost();
  31
  32   virtual int32_t OnResourceMessageReceived(
  33       const IPC::Message& msg,
  34       ppapi::host::HostMessageContext* context) override;
  35
  36   // Called when the stream is created.
  37   void StreamCreated(base::SharedMemoryHandle shared_memory_handle,
  38                      size_t shared_memory_size,
  39                      base::SyncSocket::Handle socket);
  40   void StreamCreationFailed();
  41
  42  private:
  43   int32_t OnOpen(ppapi::host::HostMessageContext* context,
  44                  const std::string& device_id,
  45                  PP_AudioSampleRate sample_rate,
  46                  uint32_t sample_frame_count);
  47   int32_t OnStartOrStop(ppapi::host::HostMessageContext* context, bool capture);
  48   int32_t OnClose(ppapi::host::HostMessageContext* context);
  49
  50   void OnOpenComplete(int32_t result,
  51                       base::SharedMemoryHandle shared_memory_handle,
  52                       size_t shared_memory_size,
  53                       base::SyncSocket::Handle socket_handle);
  54
  55   int32_t GetRemoteHandles(
  56       const base::SyncSocket& socket,
  57       const base::SharedMemory& shared_memory,
  58       IPC::PlatformFileForTransit* remote_socket_handle,
  59       base::SharedMemoryHandle* remote_shared_memory_handle);
  60
  61   void Close();
  62
  63   void SendOpenReply(int32_t result);
  64
  65   // Non-owning pointer.
  66   RendererPpapiHostImpl* renderer_ppapi_host_;
  67
  68   ppapi::host::ReplyMessageContext open_context_;
  69
  70   // Audio input object that we delegate audio IPC through.
  71   // We don't own this pointer but are responsible for calling Shutdown on it.
  72   PepperPlatformAudioInput* audio_input_;
  73
  74   PepperDeviceEnumerationHostHelper enumeration_helper_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(PepperAudioInputHost);
  77 };
  78
  79 }  // namespace content
  80
  81 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_AUDIO_INPUT_HOST_H_