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_AUDIO_HELPER_H_ 6 #define CONTENT_RENDERER_PEPPER_AUDIO_HELPER_H_ 7 8 #include "base/basictypes.h" 9 #include "base/memory/scoped_ptr.h" 10 #include "base/memory/shared_memory.h" 11 #include "base/sync_socket.h" 12 #include "ppapi/c/pp_completion_callback.h" 13 #include "ppapi/shared_impl/resource.h" 14 #include "ppapi/shared_impl/scoped_pp_resource.h" 15 #include "ppapi/shared_impl/tracked_callback.h" 16 17 namespace content { 18 19 class AudioHelper { 20 public: 21 AudioHelper(); 22 virtual ~AudioHelper(); 23 24 // Called when the stream is created. 25 void StreamCreated(base::SharedMemoryHandle shared_memory_handle, 26 size_t shared_memory_size_, 27 base::SyncSocket::Handle socket); 28 29 void SetCreateCallback( 30 scoped_refptr<ppapi::TrackedCallback> create_callback); 31 32 protected: 33 // TODO(viettrungluu): This is all very poorly thought out. Refactor. 34 35 // To be called by implementations of |PPB_Audio_API|/|PPB_AudioInput_API|. 36 int32_t GetSyncSocketImpl(int* sync_socket); 37 int32_t GetSharedMemoryImpl(int* shm_handle, uint32_t* shm_size); 38 39 // To be implemented by subclasses to call their |SetStreamInfo()|. 40 virtual void OnSetStreamInfo(base::SharedMemoryHandle shared_memory_handle, 41 size_t shared_memory_size, 42 base::SyncSocket::Handle socket_handle) = 0; 43 44 private: 45 scoped_refptr<ppapi::TrackedCallback> create_callback_; 46 47 // When a create callback is being issued, these will save the info for 48 // querying from the callback. The proxy uses this to get the handles to the 49 // other process instead of mapping them in the renderer. These will be 50 // invalid all other times. 51 scoped_ptr<base::SharedMemory> shared_memory_for_create_callback_; 52 size_t shared_memory_size_for_create_callback_; 53 scoped_ptr<base::SyncSocket> socket_for_create_callback_; 54 55 DISALLOW_COPY_AND_ASSIGN(AudioHelper); 56 }; 57 58 } // namespace content 59 60 #endif // CONTENT_RENDERER_PEPPER_AUDIO_HELPER_H_ 61