Implements AudioMessageFilter as member in RenderThread

content/browser/renderer_host/media/audio_input_renderer_host.cc

 // Copyright (c) 2011 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.
 
 #include "content/browser/renderer_host/media/audio_input_renderer_host.h"
 
 #include "base/metrics/histogram.h"
 #include "base/process.h"
 #include "base/shared_memory.h"
 #include "content/browser/renderer_host/media/audio_common.h"
 #include "content/browser/renderer_host/media/audio_input_sync_writer.h"
 #include "content/common/media/audio_messages.h"
 #include "ipc/ipc_logging.h"
 
 
 AudioInputRendererHost::AudioEntry::AudioEntry()
-    : render_view_id(0),
-      stream_id(0),
+    : stream_id(0),
       pending_close(false) {
 }
 
 AudioInputRendererHost::AudioEntry::~AudioEntry() {}
 
 AudioInputRendererHost::AudioInputRendererHost() {}
 
 AudioInputRendererHost::~AudioInputRendererHost() {
   DCHECK(audio_entries_.empty());
 }
@@ skipping 44 matching lines @@
 }
 
 void AudioInputRendererHost::OnData(media::AudioInputController* controller,
                                     const uint8* data,
                                     uint32 size) {
   NOTREACHED() << "Only low-latency mode is supported.";
 }
 
 void AudioInputRendererHost::DoCompleteCreation(
     media::AudioInputController* controller) {
-  VLOG(1) << "AudioInputRendererHost::DoCompleteCreation()";
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   AudioEntry* entry = LookupByController(controller);
   if (!entry)
     return;
 
   if (!peer_handle()) {
     NOTREACHED() << "Renderer process handle is invalid.";
     DeleteEntryOnError(entry);
     return;
@@ skipping 28 matching lines @@
 
     // If we failed to prepare the sync socket for the renderer then we fail
     // the construction of audio input stream.
     if (!writer->PrepareForeignSocketHandle(peer_handle(),
                                             &foreign_socket_handle)) {
       DeleteEntryOnError(entry);
       return;
     }
 
     Send(new AudioInputMsg_NotifyLowLatencyStreamCreated(
-             entry->render_view_id, entry->stream_id, foreign_memory_handle,
+             entry->stream_id, foreign_memory_handle,
              foreign_socket_handle, entry->shared_memory.created_size()));
     return;
   }
 }
 
 void AudioInputRendererHost::DoSendRecordingMessage(
     media::AudioInputController* controller) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   // TODO(henrika): TBI?
@@ skipping 31 matching lines @@
     IPC_MESSAGE_HANDLER(AudioInputHostMsg_CloseStream, OnCloseStream)
     IPC_MESSAGE_HANDLER(AudioInputHostMsg_GetVolume, OnGetVolume)
     IPC_MESSAGE_HANDLER(AudioInputHostMsg_SetVolume, OnSetVolume)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP_EX()
 
   return handled;
 }
 
 void AudioInputRendererHost::OnCreateStream(
-    const IPC::Message& msg, int stream_id,
-    const AudioParameters& params, bool low_latency) {
+    int stream_id, const AudioParameters& params, bool low_latency) {
   VLOG(1) << "AudioInputRendererHost::OnCreateStream(stream_id="
           << stream_id << ")";
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  DCHECK(LookupById(msg.routing_id(), stream_id) == NULL);
+  DCHECK(LookupById(stream_id) == NULL);
 
   // Prevent the renderer process from asking for a normal-latency
   // input stream.
   if (!low_latency) {
     NOTREACHED() << "Current implementation only supports low-latency mode.";
     return;
   }
 
   AudioParameters audio_params(params);
 
   // Select the hardware packet size if not specified.
   if (!audio_params.samples_per_packet) {
     audio_params.samples_per_packet = SelectSamplesPerPacket(audio_params);
   }
   uint32 packet_size = audio_params.GetPacketSize();
 
   scoped_ptr<AudioEntry> entry(new AudioEntry());
   // Create the shared memory and share with the renderer process.
   if (!entry->shared_memory.CreateAndMapAnonymous(packet_size)) {
     // If creation of shared memory failed then send an error message.
-    SendErrorMessage(msg.routing_id(), stream_id);
+    SendErrorMessage(stream_id);
     return;
   }
 
   // This is a low latency mode, hence we need to construct a SyncWriter first.
   scoped_ptr<AudioInputSyncWriter> writer(
       new AudioInputSyncWriter(&entry->shared_memory));
 
   // Then try to initialize the sync writer.
   if (!writer->Init()) {
-    SendErrorMessage(msg.routing_id(), stream_id);
+    SendErrorMessage(stream_id);
     return;
   }
 
   // If we have successfully created the SyncWriter then assign it to the
   // entry and construct an AudioInputController.
   entry->writer.reset(writer.release());
   entry->controller =
       media::AudioInputController::CreateLowLatency(this,
                                                     audio_params,
                                                     entry->writer.get());
 
   if (!entry->controller) {
-    SendErrorMessage(msg.routing_id(), stream_id);
+    SendErrorMessage(stream_id);
     return;
   }
 
   // If we have created the controller successfully create a entry and add it
   // to the map.
-  entry->render_view_id = msg.routing_id();
   entry->stream_id = stream_id;
 
-  audio_entries_.insert(std::make_pair(
-      AudioEntryId(msg.routing_id(), stream_id),
-      entry.release()));
+  audio_entries_.insert(std::make_pair(stream_id, entry.release()));
 }
 
-void AudioInputRendererHost::OnRecordStream(const IPC::Message& msg,
-                                            int stream_id) {
+void AudioInputRendererHost::OnRecordStream(int stream_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
-  AudioEntry* entry = LookupById(msg.routing_id(), stream_id);
+  AudioEntry* entry = LookupById(stream_id);
   if (!entry) {
-    SendErrorMessage(msg.routing_id(), stream_id);
+    SendErrorMessage(stream_id);
     return;
   }
 
   entry->controller->Record();
 }
 
-void AudioInputRendererHost::OnCloseStream(const IPC::Message& msg,
-                                           int stream_id) {
+void AudioInputRendererHost::OnCloseStream(int stream_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
-  AudioEntry* entry = LookupById(msg.routing_id(), stream_id);
+  AudioEntry* entry = LookupById(stream_id);
 
   if (entry)
     CloseAndDeleteStream(entry);
 }
 
-void AudioInputRendererHost::OnSetVolume(const IPC::Message& msg, int stream_id,
-                                    double volume) {
+void AudioInputRendererHost::OnSetVolume(int stream_id, double volume) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
-  AudioEntry* entry = LookupById(msg.routing_id(), stream_id);
+  AudioEntry* entry = LookupById(stream_id);
   if (!entry) {
-    SendErrorMessage(msg.routing_id(), stream_id);
+    SendErrorMessage(stream_id);
     return;
   }
 
   // TODO(henrika): TBI.
   NOTIMPLEMENTED();
 }
 
-void AudioInputRendererHost::OnGetVolume(const IPC::Message& msg,
-                                         int stream_id) {
+void AudioInputRendererHost::OnGetVolume(int stream_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
-  AudioEntry* entry = LookupById(msg.routing_id(), stream_id);
+  AudioEntry* entry = LookupById(stream_id);
   if (!entry) {
-    SendErrorMessage(msg.routing_id(), stream_id);
+    SendErrorMessage(stream_id);
     return;
   }
 
   // TODO(henrika): TBI.
   NOTIMPLEMENTED();
 }
 
-void AudioInputRendererHost::SendErrorMessage(int32 render_view_id,
-                                              int32 stream_id) {
+void AudioInputRendererHost::SendErrorMessage(int stream_id) {
   // TODO(henrika): error state for audio input is not unique
-  Send(new AudioMsg_NotifyStreamStateChanged(render_view_id,
-                                             stream_id,
+  Send(new AudioMsg_NotifyStreamStateChanged(stream_id,
                                              kAudioStreamError));
 }
 
 void AudioInputRendererHost::DeleteEntries() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   for (AudioEntryMap::iterator i = audio_entries_.begin();
        i != audio_entries_.end(); ++i) {
     CloseAndDeleteStream(i->second);
   }
@@ skipping 17 matching lines @@
       NewRunnableMethod(this, &AudioInputRendererHost::DeleteEntry, entry));
 }
 
 void AudioInputRendererHost::DeleteEntry(AudioEntry* entry) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   // Delete the entry when this method goes out of scope.
   scoped_ptr<AudioEntry> entry_deleter(entry);
 
   // Erase the entry from the map.
-  audio_entries_.erase(
-      AudioEntryId(entry->render_view_id, entry->stream_id));
+  audio_entries_.erase(entry->stream_id);
 }
 
 void AudioInputRendererHost::DeleteEntryOnError(AudioEntry* entry) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   // Sends the error message first before we close the stream because
   // |entry| is destroyed in DeleteEntry().
-  SendErrorMessage(entry->render_view_id, entry->stream_id);
+  SendErrorMessage(entry->stream_id);
   CloseAndDeleteStream(entry);
 }
 
 AudioInputRendererHost::AudioEntry* AudioInputRendererHost::LookupById(
-    int route_id, int stream_id) {
+    int stream_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
-  AudioEntryMap::iterator i = audio_entries_.find(
-      AudioEntryId(route_id, stream_id));
+  AudioEntryMap::iterator i = audio_entries_.find(stream_id);
   if (i != audio_entries_.end())
     return i->second;
   return NULL;
 }
 
 AudioInputRendererHost::AudioEntry* AudioInputRendererHost::LookupByController(
     media::AudioInputController* controller) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   // Iterate the map of entries.
   // TODO(hclam): Implement a faster look up method.
   for (AudioEntryMap::iterator i = audio_entries_.begin();
        i != audio_entries_.end(); ++i) {
     if (controller == i->second->controller.get())
       return i->second;
   }
   return NULL;
 }