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 41 matching lines @@
   }
   return ret;
 }
 int WebRtcAudioDeviceImpl::CaptureData(const std::vector<int>& channels,
                                        const int16* audio_data,
                                        int sample_rate,
                                        int number_of_channels,
                                        int number_of_frames,
                                        int audio_delay_milliseconds,
                                        int current_volume,
-                                       bool need_audio_processing) {
+                                       bool need_audio_processing,
+                                       bool key_pressed) {
   int total_delay_ms = 0;
   {
     base::AutoLock auto_lock(lock_);
     if (!recording_)
       return 0;
 
     // Store the reported audio delay locally.
     input_delay_ms_ = audio_delay_milliseconds;
     total_delay_ms = input_delay_ms_ + output_delay_ms_;
     DVLOG(2) << "total delay: " << input_delay_ms_ + output_delay_ms_;
   }
 
   // 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.
   const int16* audio_buffer = audio_data;
   const int samples_per_10_msec = (sample_rate / 100);
   int accumulated_audio_samples = 0;
-  bool key_pressed = false;
   uint32_t new_volume = 0;
   while (accumulated_audio_samples < number_of_frames) {
     // Deliver 10ms of recorded 16-bit linear PCM audio.
     int new_mic_level = audio_transport_callback_->OnDataAvailable(
         &channels[0],
         channels.size(),
         audio_buffer,
         sample_rate,
         number_of_channels,
         samples_per_10_msec,
@@ skipping 387 matching lines @@
   for (CapturerList::const_iterator iter = capturers_.begin();
        iter != capturers_.end(); ++iter) {
     if (!(*iter)->device_id().empty())
       return *iter;
   }
 
   return NULL;
 }
 
 }  // namespace content