Adding key press detection in the browser process.

content/renderer/media/webrtc_audio_device_impl.cc

 // Copyright 2013 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/renderer/media/webrtc_audio_device_impl.h"
 
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_util.h"
 #include "base/win/windows_version.h"
@@ skipping 45 matching lines @@
   if (ret == 0) {
     delete this;
   }
   return ret;
 }
 
 void WebRtcAudioDeviceImpl::CaptureData(const int16* audio_data,
                                         int number_of_channels,
                                         int number_of_frames,
                                         int audio_delay_milliseconds,
-                                        double volume) {
+                                        double volume,
+                                        bool key_pressed) {
   DCHECK_LE(number_of_frames, input_buffer_size());
 #if defined(OS_WIN) || defined(OS_MACOSX)
   DCHECK_LE(volume, 1.0);
 #elif defined(OS_LINUX) || defined(OS_OPENBSD)
   // We have a special situation on Linux where the microphone volume can be
   // "higher than maximum". The input volume slider in the sound preference
   // allows the user to set a scaling that is higher than 100%. It means that
   // even if the reported maximum levels is N, the actual microphone level can
   // go up to 1.5x*N and that corresponds to a normalized |volume| of 1.5x.
   DCHECK_LE(volume, 1.6);
@@ skipping 28 matching lines @@
   int bytes_per_sample = input_audio_parameters.bits_per_sample() / 8;
   const int bytes_per_10_msec =
       channels * samples_per_10_msec * bytes_per_sample;
   int accumulated_audio_samples = 0;
 
   const uint8* audio_byte_buffer = reinterpret_cast<const uint8*>(audio_data);
 
   // Write audio samples in blocks of 10 milliseconds to the registered
   // webrtc::AudioTransport sink. Keep writing until our internal byte
   // buffer is empty.
-  // TODO(niklase): Wire up the key press detection.
-  bool key_pressed = false;
   while (accumulated_audio_samples < number_of_frames) {
     // Deliver 10ms of recorded 16-bit linear PCM audio.
     audio_transport_callback_->RecordedDataIsAvailable(
         audio_byte_buffer,
         samples_per_10_msec,
         bytes_per_sample,
         channels,
         samples_per_sec,
         input_delay_ms_ + output_delay_ms,
         0,  // TODO(henrika): |clock_drift| parameter is not utilized today.
@@ skipping 370 matching lines @@
     return false;
 
   if (!renderer->Initialize(this))
     return false;
 
   renderer_ = renderer;
   return true;
 }
 
 }  // namespace content