Line data    Source code

       1             : /*
       2             :  *  Copyright (C) 2004-2024 Savoir-faire Linux Inc.
       3             :  *
       4             :  *  This program is free software: you can redistribute it and/or modify
       5             :  *  it under the terms of the GNU General Public License as published by
       6             :  *  the Free Software Foundation, either version 3 of the License, or
       7             :  *  (at your option) any later version.
       8             :  *
       9             :  *  This program is distributed in the hope that it will be useful,
      10             :  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
      12             :  *  GNU General Public License for more details.
      13             :  *
      14             :  *  You should have received a copy of the GNU General Public License
      15             :  *  along with this program. If not, see <https://www.gnu.org/licenses/>.
      16             :  */
      17             : 
      18             : #include "audio_sender.h"
      19             : #include "client/videomanager.h"
      20             : #include "libav_deps.h"
      21             : #include "logger.h"
      22             : #include "media_encoder.h"
      23             : #include "media_io_handle.h"
      24             : #include "media_stream.h"
      25             : #include "resampler.h"
      26             : 
      27             : #include <memory>
      28             : 
      29             : namespace jami {
      30             : 
      31         191 : AudioSender::AudioSender(const std::string& dest,
      32             :                          const MediaDescription& args,
      33             :                          SocketPair& socketPair,
      34             :                          const uint16_t seqVal,
      35         191 :                          const uint16_t mtu)
      36         191 :     : dest_(dest)
      37         191 :     , args_(args)
      38         191 :     , seqVal_(seqVal)
      39         382 :     , mtu_(mtu)
      40             : {
      41         191 :     setup(socketPair);
      42         191 : }
      43             : 
      44         382 : AudioSender::~AudioSender()
      45             : {
      46         191 :     audioEncoder_.reset();
      47         191 :     muxContext_.reset();
      48         382 : }
      49             : 
      50             : bool
      51         191 : AudioSender::setup(SocketPair& socketPair)
      52             : {
      53         191 :     audioEncoder_.reset(new MediaEncoder);
      54         191 :     muxContext_.reset(socketPair.createIOContext(mtu_));
      55             : 
      56             :     try {
      57             :         /* Encoder setup */
      58         191 :         JAMI_DBG("audioEncoder_->openOutput %s", dest_.c_str());
      59         191 :         audioEncoder_->openOutput(dest_, "rtp");
      60         191 :         audioEncoder_->setOptions(args_);
      61         191 :         auto codec = std::static_pointer_cast<SystemAudioCodecInfo>(args_.codec);
      62         382 :         auto ms = MediaStream("audio sender", codec->audioformat);
      63         191 :         audioEncoder_->setOptions(ms);
      64         191 :         audioEncoder_->addStream(*args_.codec);
      65         191 :         audioEncoder_->setInitSeqVal(seqVal_);
      66         191 :         audioEncoder_->setIOContext(muxContext_->getContext());
      67         191 :     } catch (const MediaEncoderException& e) {
      68           0 :         JAMI_ERR("%s", e.what());
      69           0 :         return false;
      70           0 :     }
      71             : #ifdef DEBUG_SDP
      72             :     audioEncoder_->print_sdp();
      73             : #endif
      74             : 
      75         191 :     return true;
      76             : }
      77             : 
      78             : void
      79           0 : AudioSender::update(Observable<std::shared_ptr<jami::MediaFrame>>* /*obs*/,
      80             :                     const std::shared_ptr<jami::MediaFrame>& framePtr)
      81             : {
      82           0 :     auto frame = framePtr->pointer();
      83           0 :     frame->pts = sent_samples;
      84           0 :     sent_samples += frame->nb_samples;
      85             : 
      86             :     // check for change in voice activity, if so, call callback
      87             :     // downcast MediaFrame to AudioFrame
      88           0 :     bool hasVoice = std::dynamic_pointer_cast<AudioFrame>(framePtr)->has_voice;
      89           0 :     if (hasVoice != voice_) {
      90           0 :         voice_ = hasVoice;
      91           0 :         if (voiceCallback_) {
      92           0 :             voiceCallback_(voice_);
      93             :         } else {
      94           0 :             JAMI_ERR("AudioSender no voice callback!");
      95             :         }
      96             :     }
      97             : 
      98           0 :     if (audioEncoder_->encodeAudio(*std::static_pointer_cast<AudioFrame>(framePtr)) < 0)
      99           0 :         JAMI_ERR("encoding failed");
     100           0 : }
     101             : 
     102             : void
     103         210 : AudioSender::setVoiceCallback(std::function<void(bool)> cb)
     104             : {
     105         210 :     if (cb) {
     106         210 :         voiceCallback_ = std::move(cb);
     107             :     } else {
     108           0 :         JAMI_ERR("AudioSender attempting to set invalid voice callback");
     109             :     }
     110         210 : }
     111             : 
     112             : uint16_t
     113           0 : AudioSender::getLastSeqValue()
     114             : {
     115           0 :     return audioEncoder_->getLastSeqValue();
     116             : }
     117             : 
     118             : int
     119           0 : AudioSender::setPacketLoss(uint64_t pl)
     120             : {
     121             :     // The encoder may be destroy during a bitrate change
     122             :     // when a codec parameter like auto quality change
     123           0 :     if (!audioEncoder_)
     124           0 :         return -1; // NOK
     125             : 
     126           0 :     return audioEncoder_->setPacketLoss(pl);
     127             : }
     128             : 
     129             : } // namespace jami