PPB_AudioInput_Dev: support multiple audio input devices - Part 1.

ppapi/proxy/ppb_audio_input_proxy.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PPAPI_PPB_AUDIO_INPUT_PROXY_H_
 #define PPAPI_PPB_AUDIO_INPUT_PROXY_H_
 
+#include <string>
 #include <utility>
+#include <vector>
 
 #include "base/basictypes.h"
 #include "base/shared_memory.h"
 #include "base/sync_socket.h"
 #include "ipc/ipc_platform_file.h"
 #include "ppapi/c/dev/ppb_audio_input_dev.h"
 #include "ppapi/c/ppb_audio_config.h"
 #include "ppapi/proxy/interface_proxy.h"
 #include "ppapi/proxy/proxy_non_thread_safe_ref_count.h"
 #include "ppapi/utility/completion_callback_factory.h"
 
 namespace ppapi {
 
 class HostResource;
+struct DeviceRefData;
 
 namespace proxy {
 
 class PPB_AudioInput_Proxy : public InterfaceProxy {
  public:
   explicit PPB_AudioInput_Proxy(Dispatcher* dispatcher);
   virtual ~PPB_AudioInput_Proxy();
 
-  static PP_Resource CreateProxyResource(
+  static PP_Resource CreateProxyResource0_1(
       PP_Instance instance,
-      PP_Resource config_id,
+      PP_Resource config,
       PPB_AudioInput_Callback audio_input_callback,
       void* user_data);
 
+  static PP_Resource CreateProxyResource(PP_Instance instance);
+
   // InterfaceProxy implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
   static const ApiID kApiID = API_ID_PPB_AUDIO_INPUT_DEV;
 
  private:
   // Message handlers.
   // Plugin->renderer message handlers.
-  void OnMsgCreate(PP_Instance instance_id,
-                   int32_t sample_rate,
-                   uint32_t sample_frame_count,
-                   ppapi::HostResource* result);
-  void OnMsgStartOrStop(const ppapi::HostResource& audio_id, bool capture);
+  void OnMsgCreate(PP_Instance instance, ppapi::HostResource* result);
+  void OnMsgEnumerateDevices(const ppapi::HostResource& audio_input);
+  void OnMsgOpen(const ppapi::HostResource& audio_input,
+                 const std::string& device_id,
+                 int32_t sample_rate,
+                 uint32_t sample_frame_count);
+  void OnMsgStartOrStop(const ppapi::HostResource& audio_input, bool capture);
+  void OnMsgClose(const ppapi::HostResource& audio_input);
 
   // Renderer->plugin message handlers.
-  void OnMsgNotifyAudioStreamCreated(const ppapi::HostResource& audio_id,
-                                     int32_t result_code,
-                                     IPC::PlatformFileForTransit socket_handle,
-                                     base::SharedMemoryHandle handle,
-                                     uint32_t length);
+  void OnMsgEnumerateDevicesACK(
+      const ppapi::HostResource& audio_input,
+      int32_t result,
+      const std::vector<ppapi::DeviceRefData>& devices);
+  void OnMsgOpenACK(const ppapi::HostResource& audio_input,
+                    int32_t result,
+                    IPC::PlatformFileForTransit socket_handle,
+                    base::SharedMemoryHandle handle,
+                    uint32_t length);
 
-  void AudioInputChannelConnected(int32_t result,
-                                  const ppapi::HostResource& resource);
+  void EnumerateDevicesACKInHost(int32_t result,
+                                 const ppapi::HostResource& audio_input);
+  void OpenACKInHost(int32_t result, const ppapi::HostResource& audio_input);
 
-  // In the renderer, this is called in response to a stream created message.
+  // In the renderer, this is called in response to an OpenACK message.
   // It will retrieve the shared memory and socket handles and place them into
   // the given out params. The return value is a PPAPI error code.
   //
   // The input arguments should be initialized to 0 or -1, depending on the
   // platform's default invalid handle values. On error, some of these
   // arguments may be written to, and others may be untouched, depending on
   // where the error occurred.
   int32_t GetAudioInputConnectedHandles(
       const ppapi::HostResource& resource,
       IPC::PlatformFileForTransit* foreign_socket_handle,
       base::SharedMemoryHandle* foreign_shared_memory_handle,
       uint32_t* shared_memory_length);
 
   pp::CompletionCallbackFactory<PPB_AudioInput_Proxy,
                                 ProxyNonThreadSafeRefCount> callback_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PPB_AudioInput_Proxy);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PPB_AUDIO_INPUT_PROXY_H_