Initial audio implementation.

ppapi/proxy/ppapi_messages_internal.h

 // Copyright (c) 2010 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.
 
 // This header is meant to be included in multiple passes, hence no traditional
 // header guard. It is included by backing_store_messages_internal.h
 // See ipc_message_macros.h for explanation of the macros and passes.
 
 // This file needs to be included again, even though we're actually included
 // from it via utility_messages.h.
 #include "ipc/ipc_message_macros.h"
 
 // These are from the plugin to the renderer
 IPC_BEGIN_MESSAGES(Ppapi)
   // Loads the given plugin.
-  IPC_MESSAGE_CONTROL2(PpapiMsg_LoadPlugin,
+  IPC_MESSAGE_CONTROL3(PpapiMsg_LoadPlugin,
+                       base::ProcessHandle /* host_process_handle */,
                        FilePath /* path */,
                        int /* renderer_id */)
 
   IPC_SYNC_MESSAGE_CONTROL1_1(PpapiMsg_InitializeModule,
                               PP_Module /* module_id */,
                               bool /* result */)
 
   // Sent in both directions to see if the other side supports the given
   // interface.
   IPC_SYNC_MESSAGE_CONTROL1_1(PpapiMsg_SupportsInterface,
                               std::string /* interface_name */,
                               bool /* result */)
 
   // Way for the renderer to list all interfaces that is supports in advance to
   // avoid extra IPC traffic.
   IPC_MESSAGE_CONTROL1(PpapiMsg_DeclareInterfaces,
                        std::vector<std::string> /* interfaces */)
 
   IPC_MESSAGE_CONTROL2(PpapiMsg_ExecuteCallback,
                        uint32 /* serialized_callback */,
                        int32 /* param */)
 
+  // PPB_Audio.
+
+  // Notifies the result of the audio stream create call. This is called in
+  // both error cases and in the normal success case. These cases are
+  // differentiated by the result code, which is one of the standard PPAPI
+  // result codes.
+  //
+  // The handler of this message should always code all of the handles passed

[piman, 2010/12/01 01:44:52]

"should always code" ? You mean check ? or close ?

+  // in, since some could be valid even in the error case.
+  IPC_MESSAGE_ROUTED5(PpapiMsg_PPBAudio_NotifyAudioStreamCreated,
+                      PP_Resource /* audio_id */,
+                      int32_t /* result_code (will be != PP_OK on failure) */,
+#if defined(OS_WIN)
+                      base::SyncSocket::Handle /* socket_handle */,
+#else
+                      base::FileDescriptor /* socket_handle */,
+#endif

[piman, 2010/12/01 01:44:52]

Using IPC::PlatformFileForTransit (typedef'd to HANDLE on Windows, and
FileDescriptor on Posix) will save you a lot of #ifdefs.

+                      base::SharedMemoryHandle /* handle */,
+                      int32_t /* length */)
+
+  // PPB_Graphics2D.
+  IPC_MESSAGE_ROUTED2(PpapiMsg_PPBGraphics2D_FlushACK,
+                      PP_Resource /* graphics_2d */,
+                      int32_t /* pp_error */)
+
   // PPP_Class.
   IPC_SYNC_MESSAGE_ROUTED3_2(PpapiMsg_PPPClass_HasProperty,
                              int64 /* ppp_class */,
                              int64 /* object */,
                              pp::proxy::SerializedVar /* property */,
                              pp::proxy::SerializedVar /* out_exception */,
                              bool /* result */)
   IPC_SYNC_MESSAGE_ROUTED3_2(PpapiMsg_PPPClass_HasMethod,
                              int64 /* ppp_class */,
                              int64 /* object */,
@@ skipping 32 matching lines @@
   IPC_SYNC_MESSAGE_ROUTED3_2(PpapiMsg_PPPClass_Construct,
                              int64 /* ppp_class */,
                              int64 /* object */,
                              std::vector<pp::proxy::SerializedVar> /* args */,
                              pp::proxy::SerializedVar /* out_exception */,
                              pp::proxy::SerializedVar /* result */)
   IPC_MESSAGE_ROUTED2(PpapiMsg_PPPClass_Deallocate,
                       int64 /* ppp_class */,
                       int64 /* object */)
 
-  // PPB_Graphics2D.
-  IPC_MESSAGE_ROUTED2(PpapiMsg_PPBGraphics2D_FlushACK,
-                      PP_Resource /* graphics_2d */,
-                      int32_t /* pp_error */)
-
   // PPP_Instance.
   IPC_SYNC_MESSAGE_ROUTED3_1(PpapiMsg_PPPInstance_DidCreate,
                              PP_Instance /* instance */,
                              std::vector<std::string> /* argn */,
                              std::vector<std::string> /* argv */,
                              PP_Bool /* result */)
   IPC_MESSAGE_ROUTED1(PpapiMsg_PPPInstance_DidDestroy,
                       PP_Instance /* instance */)
   IPC_MESSAGE_ROUTED3(PpapiMsg_PPPInstance_DidChangeView,
                       PP_Instance /* instance */,
@@ skipping 29 matching lines @@
                       std::string /* data */)
 IPC_END_MESSAGES(Ppapi)
 
 // -----------------------------------------------------------------------------
 // These are from the plugin to the renderer.
 IPC_BEGIN_MESSAGES(PpapiHost)
   // Reply to PpapiMsg_LoadPlugin.
   IPC_MESSAGE_CONTROL1(PpapiHostMsg_PluginLoaded,
                        IPC::ChannelHandle /* handle */)
 
+  // PPB_Audio.
+  IPC_SYNC_MESSAGE_ROUTED2_1(PpapiHostMsg_PPBAudio_Create,
+                             PP_Instance /* instance_id */,
+                             PP_Resource /* config_id */,
+                             PP_Resource /* result */)
+  IPC_MESSAGE_ROUTED2(PpapiHostMsg_PPBAudio_StartOrStop,
+                      PP_Resource /* audio_id */,
+                      bool /* play */)
+
+  // PPB_AudioConfig.
+  IPC_SYNC_MESSAGE_ROUTED3_1(PpapiHostMsg_PPBAudioConfig_Create,
+                             PP_Module /* module */,
+                             int32_t /* sample_rate */,
+                             uint32_t /* sample_frame_count */,
+                             PP_Resource /* result */)
+  IPC_SYNC_MESSAGE_ROUTED1_1(
+      PpapiHostMsg_PPBAudioConfig_RecommendSampleFrameCount,
+      uint32_t /* requested */,
+      uint32_t /* result */)
+
   // PPB_Buffer.
   IPC_SYNC_MESSAGE_ROUTED2_2(PpapiHostMsg_PPBBuffer_Create,
                              PP_Module /* module */,
                              int32_t /* size */,
                              PP_Resource /* result_resource */,
                              uint64_t /* result_shm_handle */)
 
   // PPB_Core.
   IPC_MESSAGE_ROUTED1(PpapiHostMsg_PPBCore_AddRefResource, PP_Resource)
   IPC_MESSAGE_ROUTED1(PpapiHostMsg_PPBCore_ReleaseResource, PP_Resource)
@@ skipping 330 matching lines @@
                              int64 /* object-data */,
                              PP_Bool /* result */)
   IPC_SYNC_MESSAGE_ROUTED3_1(PpapiHostMsg_PPBVar_CreateObjectDeprecated,
                              PP_Module /* module */,
                              int64 /* object_class */,
                              int64 /* object_data */,
                              pp::proxy::SerializedVar /* result */)
 
 IPC_END_MESSAGES(PpapiHost)