PPB_AudioInput_Dev: support multiple audio input devices - Part 1.

webkit/plugins/ppapi/ppb_audio_input_impl.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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 WEBKIT_PLUGINS_PPAPI_PPB_AUDIO_INPUT_IMPL_H_
 #define WEBKIT_PLUGINS_PPAPI_PPB_AUDIO_INPUT_IMPL_H_
 
+#include <string>
+#include <vector>
+
 #include "base/basictypes.h"
-#include "base/memory/ref_counted.h"
-#include "base/shared_memory.h"
-#include "base/sync_socket.h"
-#include "ppapi/c/dev/ppb_audio_input_dev.h"
-#include "ppapi/c/pp_completion_callback.h"
-#include "ppapi/c/trusted/ppb_audio_input_trusted_dev.h"
-#include "ppapi/shared_impl/ppb_audio_config_shared.h"
+#include "base/compiler_specific.h"
+#include "base/memory/weak_ptr.h"
 #include "ppapi/shared_impl/ppb_audio_input_shared.h"
-#include "ppapi/shared_impl/resource.h"
-#include "ppapi/shared_impl/scoped_pp_resource.h"
-#include "webkit/plugins/ppapi/audio_helper.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
-#include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 
 namespace webkit {
 namespace ppapi {
 
 // Some of the backend functionality of this class is implemented by the
-// AudioInputImpl so it can be shared with the proxy.
-class PPB_AudioInput_Impl : public ::ppapi::Resource,
-                            public ::ppapi::PPB_AudioInput_Shared,
-                            public AudioHelper {
+// PPB_AudioInput_Shared so it can be shared with the proxy.
+class PPB_AudioInput_Impl : public ::ppapi::PPB_AudioInput_Shared,
+                            public PluginDelegate::PlatformAudioCommonClient,
+                            public base::SupportsWeakPtr<PPB_AudioInput_Impl> {
  public:
-  // Trusted initialization. You must call Init after this.
-  //
-  // Untrusted initialization should just call the static Create() function
-  // to properly create & initialize this class.
+  typedef std::vector< ::ppapi::DeviceRefData> DeviceRefDataVector;
+
   explicit PPB_AudioInput_Impl(PP_Instance instance);
-
   virtual ~PPB_AudioInput_Impl();
 
-  // Creation function for untrusted plugins. This handles all initialization
+  // Creation function for the v0.1 interface. This handles all initialization
   // and will return 0 on failure.
-  static PP_Resource Create(PP_Instance instance,
-                            PP_Resource config_id,
-                            PPB_AudioInput_Callback audio_input_callback,
-                            void* user_data);
+  static PP_Resource Create0_1(PP_Instance instance,
+                               PP_Resource config,
+                               PPB_AudioInput_Callback audio_input_callback,
+                               void* user_data);
 
-  // Initialization function for trusted init.
-  bool Init(PP_Resource config_id,
-            PPB_AudioInput_Callback callback,
-            void* user_data);
-
-  // Resource overrides.
-  virtual ::ppapi::thunk::PPB_AudioInput_API* AsPPB_AudioInput_API() OVERRIDE;
-
-  // PPB_AudioInput_API implementation.
-  virtual PP_Resource GetCurrentConfig() OVERRIDE;
-  virtual PP_Bool StartCapture() OVERRIDE;
-  virtual PP_Bool StopCapture() OVERRIDE;
-
-  virtual int32_t OpenTrusted(PP_Resource config_id,
+  // Implementation of PPB_AudioInput_API trusted methods.
+  virtual int32_t OpenTrusted(const std::string& device_id,
+                              PP_Resource config,
                               PP_CompletionCallback create_callback) OVERRIDE;
   virtual int32_t GetSyncSocket(int* sync_socket) OVERRIDE;
   virtual int32_t GetSharedMemory(int* shm_handle, uint32_t* shm_size) OVERRIDE;
+  virtual const DeviceRefDataVector& GetDeviceRefData() const OVERRIDE;
+
+  // PluginDelegate::PlatformAudioCommonClient implementation.
+  virtual void StreamCreated(base::SharedMemoryHandle shared_memory_handle,
+                             size_t shared_memory_size,
+                             base::SyncSocket::Handle socket) OVERRIDE;
 
  private:
-  // AudioHelper implementation.
-  virtual void OnSetStreamInfo(base::SharedMemoryHandle shared_memory_handle,
-                               size_t shared_memory_size_,
-                               base::SyncSocket::Handle socket) OVERRIDE;
+  // PPB_AudioInput_Shared implementation.
+  virtual int32_t InternalEnumerateDevices(
+      PP_Resource* devices,
+      PP_CompletionCallback callback) OVERRIDE;
+  virtual int32_t InternalOpen(const std::string& device_id,
+                               PP_AudioSampleRate sample_rate,
+                               uint32_t sample_frame_count,
+                               PP_CompletionCallback callback) OVERRIDE;
+  virtual PP_Bool InternalStartCapture() OVERRIDE;
+  virtual PP_Bool InternalStopCapture() OVERRIDE;
+  virtual void InternalClose() OVERRIDE;
 
-  // AudioConfig used for creating this AudioInput object. We own a ref.
-  ::ppapi::ScopedPPResource config_;
+  void EnumerateDevicesCallbackFunc(int request_id,
+                                    bool succeeded,
+                                    const DeviceRefDataVector& devices);
 
   // PluginDelegate audio input object that we delegate audio IPC through.
   // We don't own this pointer but are responsible for calling Shutdown on it.
   PluginDelegate::PlatformAudioInput* audio_input_;
 
+  DeviceRefDataVector devices_data_;
+
   DISALLOW_COPY_AND_ASSIGN(PPB_AudioInput_Impl);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPB_AUDIO_INPUT_IMPL_H_