Binding media stream audio track to speech recognition [browser]

content/browser/speech/speech_recognition_dispatcher_host.cc

 // 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.
 
 #include "content/browser/speech/speech_recognition_dispatcher_host.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
+#include "base/sync_socket.h"
 #include "content/browser/browser_plugin/browser_plugin_guest.h"
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/speech/speech_recognition_manager_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/common/speech_recognition_messages.h"
 #include "content/public/browser/speech_recognition_manager_delegate.h"
 #include "content/public/browser/speech_recognition_session_config.h"
 #include "content/public/browser/speech_recognition_session_context.h"
 #include "content/public/common/content_switches.h"
+#include "media/audio/audio_parameters.h"
 
 namespace content {
 
 SpeechRecognitionDispatcherHost::SpeechRecognitionDispatcherHost(
     int render_process_id,
     net::URLRequestContextGetter* context_getter)
     : BrowserMessageFilter(SpeechRecognitionMsgStart),
       render_process_id_(render_process_id),
       context_getter_(context_getter),
       weak_factory_(this) {
@@ skipping 130 matching lines @@
   config.language = params.language;
   config.grammars = params.grammars;
   config.max_hypotheses = params.max_hypotheses;
   config.origin_url = params.origin_url;
   config.initial_context = context;
   config.url_request_context_getter = context_getter_.get();
   config.filter_profanities = filter_profanities;
   config.continuous = params.continuous;
   config.interim_results = params.interim_results;
   config.event_listener = AsWeakPtr();
+  config.using_audio_track = params.using_audio_track;
+  // TODO(burnik): This needs to be tested on Windows.
+  config.peer_process_handle = PeerHandle();
 
   int session_id = SpeechRecognitionManager::GetInstance()->CreateSession(
       config);
   DCHECK_NE(session_id, SpeechRecognitionManager::kSessionIDInvalid);
   SpeechRecognitionManager::GetInstance()->StartSession(session_id);
 }
 
 void SpeechRecognitionDispatcherHost::OnAbortRequest(int render_view_id,
                                                      int request_id) {
   int session_id = SpeechRecognitionManager::GetInstance()->GetSession(
@@ skipping 90 matching lines @@
 // The events below are currently not used by speech JS APIs implementation.
 void SpeechRecognitionDispatcherHost::OnAudioLevelsChange(int session_id,
                                                           float volume,
                                                           float noise_volume) {
 }
 
 void SpeechRecognitionDispatcherHost::OnEnvironmentEstimationComplete(
     int session_id) {
 }
 
+void SpeechRecognitionDispatcherHost::OnAudioReceiverReady(
+    int session_id,
+    const media::AudioParameters& params,
+    const base::SharedMemoryHandle memory,
+    const base::SyncSocket::TransitDescriptor socket) {
+  const SpeechRecognitionSessionContext& context =
+      SpeechRecognitionManager::GetInstance()->GetSessionContext(session_id);
+  Send(new SpeechRecognitionMsg_AudioReceiverReady(context.render_view_id,
+                                                   context.request_id,
+                                                   params,
+                                                   memory,
+                                                   socket));
+}
+
 }  // namespace content