Move talk/session/media -> webrtc/pc

talk/session/media/currentspeakermonitor.h

Index: talk/session/media/currentspeakermonitor.h
diff --git a/talk/session/media/currentspeakermonitor.h b/talk/session/media/currentspeakermonitor.h
deleted file mode 100644
index cef8b733dcd0464fb58b32d6fb6c7dd5c4be5932..0000000000000000000000000000000000000000
--- a/talk/session/media/currentspeakermonitor.h
+++ /dev/null
@@ -1,112 +0,0 @@
-/*
- * libjingle
- * Copyright 2011 Google Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *  1. Redistributions of source code must retain the above copyright notice,
- *     this list of conditions and the following disclaimer.
- *  2. Redistributions in binary form must reproduce the above copyright notice,
- *     this list of conditions and the following disclaimer in the documentation
- *     and/or other materials provided with the distribution.
- *  3. The name of the author may not be used to endorse or promote products
- *     derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
- * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-// CurrentSpeakerMonitor monitors the audio levels for a session and determines
-// which participant is currently speaking.
-
-#ifndef TALK_SESSION_MEDIA_CURRENTSPEAKERMONITOR_H_
-#define TALK_SESSION_MEDIA_CURRENTSPEAKERMONITOR_H_
-
-#include <map>
-
-#include "webrtc/base/basictypes.h"
-#include "webrtc/base/sigslot.h"
-
-namespace cricket {
-
-struct AudioInfo;
-struct MediaStreams;
-
-class AudioSourceContext {
- public:
-  sigslot::signal2<AudioSourceContext*, const cricket::AudioInfo&>
-      SignalAudioMonitor;
-  sigslot::signal1<AudioSourceContext*> SignalMediaStreamsReset;
-  sigslot::signal3<AudioSourceContext*,
-                   const cricket::MediaStreams&,
-                   const cricket::MediaStreams&> SignalMediaStreamsUpdate;
-};
-
-// CurrentSpeakerMonitor can be used to monitor the audio-levels from
-// many audio-sources and report on changes in the loudest audio-source.
-// Its a generic type and relies on an AudioSourceContext which is aware of
-// the audio-sources. AudioSourceContext needs to provide two signals namely
-// SignalAudioInfoMonitor - provides audio info of the all current speakers.
-// SignalMediaSourcesUpdated - provides updates when a speaker leaves or joins.
-// Note that the AudioSourceContext's audio monitor must be started
-// before this is started.
-// It's recommended that the audio monitor be started with a 100 ms period.
-class CurrentSpeakerMonitor : public sigslot::has_slots<> {
- public:
-  CurrentSpeakerMonitor(AudioSourceContext* audio_source_context);
-  ~CurrentSpeakerMonitor();
-
-  void Start();
-  void Stop();
-
-  // Used by tests.  Note that the actual minimum time between switches
-  // enforced by the monitor will be the given value plus or minus the
-  // resolution of the system clock.
-  void set_min_time_between_switches(uint32_t min_time_between_switches);
-
-  // This is fired when the current speaker changes, and provides his audio
-  // SSRC.  This only fires after the audio monitor on the underlying
-  // AudioSourceContext has been started.
-  sigslot::signal2<CurrentSpeakerMonitor*, uint32_t> SignalUpdate;
-
- private:
-  void OnAudioMonitor(AudioSourceContext* audio_source_context,
-                      const AudioInfo& info);
-  void OnMediaStreamsUpdate(AudioSourceContext* audio_source_context,
-                            const MediaStreams& added,
-                            const MediaStreams& removed);
-  void OnMediaStreamsReset(AudioSourceContext* audio_source_context);
-
-  // These are states that a participant will pass through so that we gradually
-  // recognize that they have started and stopped speaking.  This avoids
-  // "twitchiness".
-  enum SpeakingState {
-    SS_NOT_SPEAKING,
-    SS_MIGHT_BE_SPEAKING,
-    SS_SPEAKING,
-    SS_WAS_SPEAKING_RECENTLY1,
-    SS_WAS_SPEAKING_RECENTLY2
-  };
-
-  bool started_;
-  AudioSourceContext* audio_source_context_;
-  std::map<uint32_t, SpeakingState> ssrc_to_speaking_state_map_;
-  uint32_t current_speaker_ssrc_;
-  // To prevent overswitching, switching is disabled for some time after a
-  // switch is made.  This gives us the earliest time a switch is permitted.
-  uint32_t earliest_permitted_switch_time_;
-  uint32_t min_time_between_switches_;
-};
-
-}
-
-#endif  // TALK_SESSION_MEDIA_CURRENTSPEAKERMONITOR_H_