Remove voe::OutputMixer and AudioConferenceMixer.

modules/audio_conference_mixer/include/audio_conference_mixer.h

-/*
- *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#ifndef MODULES_AUDIO_CONFERENCE_MIXER_INCLUDE_AUDIO_CONFERENCE_MIXER_H_
-#define MODULES_AUDIO_CONFERENCE_MIXER_INCLUDE_AUDIO_CONFERENCE_MIXER_H_
-
-#include "modules/audio_conference_mixer/include/audio_conference_mixer_defines.h"
-#include "modules/include/module.h"
-#include "modules/include/module_common_types.h"
-
-namespace webrtc {
-class AudioMixerOutputReceiver;
-class MixerParticipant;
-class Trace;
-
-class AudioConferenceMixer : public Module
-{
-public:
-    enum {kMaximumAmountOfMixedParticipants = 3};
-    enum Frequency
-    {
-        kNbInHz           = 8000,
-        kWbInHz           = 16000,
-        kSwbInHz          = 32000,
-        kFbInHz           = 48000,
-        kLowestPossible   = -1,
-        kDefaultFrequency = kWbInHz
-    };
-
-    // Factory method. Constructor disabled.
-    static AudioConferenceMixer* Create(int id);
-    virtual ~AudioConferenceMixer() {}
-
-    // Module functions
-    int64_t TimeUntilNextProcess() override = 0;
-    void Process() override = 0;
-
-    // Register/unregister a callback class for receiving the mixed audio.
-    virtual int32_t RegisterMixedStreamCallback(
-        AudioMixerOutputReceiver* receiver) = 0;
-    virtual int32_t UnRegisterMixedStreamCallback() = 0;
-
-    // Add/remove participants as candidates for mixing.
-    virtual int32_t SetMixabilityStatus(MixerParticipant* participant,
-                                        bool mixable) = 0;
-    // Returns true if a participant is a candidate for mixing.
-    virtual bool MixabilityStatus(
-        const MixerParticipant& participant) const = 0;
-
-    // Inform the mixer that the participant should always be mixed and not
-    // count toward the number of mixed participants. Note that a participant
-    // must have been added to the mixer (by calling SetMixabilityStatus())
-    // before this function can be successfully called.
-    virtual int32_t SetAnonymousMixabilityStatus(
-        MixerParticipant* participant, bool mixable) = 0;
-    // Returns true if the participant is mixed anonymously.
-    virtual bool AnonymousMixabilityStatus(
-        const MixerParticipant& participant) const = 0;
-
-    // Set the minimum sampling frequency at which to mix. The mixing algorithm
-    // may still choose to mix at a higher samling frequency to avoid
-    // downsampling of audio contributing to the mixed audio.
-    virtual int32_t SetMinimumMixingFrequency(Frequency freq) = 0;
-
-protected:
-    AudioConferenceMixer() {}
-};
-}  // namespace webrtc
-
-#endif // MODULES_AUDIO_CONFERENCE_MIXER_INCLUDE_AUDIO_CONFERENCE_MIXER_H_