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101 lines
3.0 KiB
101 lines
3.0 KiB
/*
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* Copyright (C) 2008 IPTEGO GmbH
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*
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* This file is part of SEMS, a free SIP media server.
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*
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* SEMS is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version. This program is released under
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* the GPL with the additional exemption that compiling, linking,
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* and/or using OpenSSL is allowed.
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*
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* For a license to use the sems software under conditions
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* other than those described here, or to purchase support for this
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* software, please contact iptel.org by e-mail at the following addresses:
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* info@iptel.org
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*
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* SEMS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _AmAudioMixer_h_
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#define _AmAudioMixer_h_
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#include "AmMultiPartyMixer.h"
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#include "AmThread.h"
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#include <map>
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#include <set>
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class AmAudioMixerConnector;
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/**
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* \brief \ref AmAudio to mix input
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*
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* AmAudio that mixes some sources' audio and writes into a set of sinks.
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*
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* Can probably do lots of things together with AmAudioQueue and/or AmAudioMixIn.
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*
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* Attention: Sources (in fact AmAudioMixerConnector) are owned by the AmAudioMixer,
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* i.e. deleted on releaseSink/destructor.
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* Sinks are not owned by the AmAudioMixer.
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*/
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class AmAudioMixer
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{
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AmMultiPartyMixer mixer;
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AmMutex srcsink_mut;
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std::map<AmAudioMixerConnector*, unsigned int> sources;
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unsigned int sink_channel;
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AmAudioMixerConnector* sink_connector;
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std::set<AmAudio*> sinks;
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public:
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AmAudioMixer(int external_sample_rate);
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~AmAudioMixer();
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AmAudio* addSource(int external_sample_rate);
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void releaseSource(AmAudio* s);
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void addSink(AmAudio* s);
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void releaseSink(AmAudio* s);
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};
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class AmAudioMixerConnector
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: public AmAudio {
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AmMultiPartyMixer& mixer;
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unsigned int channel;
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AmMutex* audio_mut;
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std::set<AmAudio*>* sinks;
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AmAudio* mix_channel;
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protected:
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int get(unsigned long long system_ts, unsigned char* buffer,
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int output_sample_rate, unsigned int nb_samples);
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int put(unsigned long long system_ts, unsigned char* buffer,
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int input_sample_rate, unsigned int size);
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// dummies for AmAudio's pure virtual methods
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int read(unsigned int user_ts, unsigned int size){ return -1; }
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int write(unsigned int user_ts, unsigned int size){ return -1; }
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public:
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AmAudioMixerConnector(AmMultiPartyMixer& mixer, unsigned int channel,
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AmAudio* mix_channel,
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AmMutex* audio_mut = NULL, std::set<AmAudio*>* sinks = NULL)
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: mixer(mixer), channel(channel), mix_channel(mix_channel),
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audio_mut(audio_mut), sinks(sinks) { }
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~AmAudioMixerConnector() { }
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};
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#endif
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