Line data    Source code

       1             : /*
       2             :  *  Copyright (C) 2004-2026 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 "libav_deps.h"
      20             : #include "logger.h"
      21             : #include "media_encoder.h"
      22             : #include "media_io_handle.h"
      23             : #include "media_stream.h"
      24             : #include "resampler.h"
      25             : 
      26             : #include <memory>
      27             : 
      28             : namespace jami {
      29             : 
      30         166 : AudioSender::AudioSender(const std::string& dest,
      31             :                          const MediaDescription& args,
      32             :                          SocketPair& socketPair,
      33             :                          const uint16_t seqVal,
      34         166 :                          const uint16_t mtu)
      35         166 :     : dest_(dest)
      36         166 :     , args_(args)
      37         166 :     , seqVal_(seqVal)
      38         332 :     , mtu_(mtu)
      39             : {
      40         166 :     setup(socketPair);
      41         166 : }
      42             : 
      43         332 : AudioSender::~AudioSender()
      44             : {
      45         166 :     audioEncoder_.reset();
      46         166 :     muxContext_.reset();
      47         332 : }
      48             : 
      49             : bool
      50         166 : AudioSender::setup(SocketPair& socketPair)
      51             : {
      52         166 :     audioEncoder_.reset(new MediaEncoder);
      53         166 :     muxContext_.reset(socketPair.createIOContext(mtu_));
      54             : 
      55             :     try {
      56             :         /* Encoder setup */
      57         166 :         JAMI_DBG("audioEncoder_->openOutput %s", dest_.c_str());
      58         166 :         audioEncoder_->openOutput(dest_, "rtp");
      59         166 :         audioEncoder_->setOptions(args_);
      60         166 :         auto codec = std::static_pointer_cast<SystemAudioCodecInfo>(args_.codec);
      61         332 :         auto ms = MediaStream("audio sender", codec->audioformat);
      62         166 :         audioEncoder_->setOptions(ms);
      63         166 :         audioEncoder_->addStream(*args_.codec);
      64         166 :         audioEncoder_->setInitSeqVal(seqVal_);
      65         166 :         audioEncoder_->setIOContext(muxContext_->getContext());
      66         166 :     } catch (const MediaEncoderException& e) {
      67           0 :         JAMI_ERR("%s", e.what());
      68           0 :         return false;
      69           0 :     }
      70             : #ifdef DEBUG_SDP
      71             :     audioEncoder_->print_sdp();
      72             : #endif
      73             : 
      74         166 :     return true;
      75             : }
      76             : 
      77             : void
      78           0 : AudioSender::update(Observable<std::shared_ptr<jami::MediaFrame>>* /*obs*/,
      79             :                     const std::shared_ptr<jami::MediaFrame>& framePtr)
      80             : {
      81           0 :     auto* frame = framePtr->pointer();
      82           0 :     frame->pts = static_cast<int64_t>(sent_samples);
      83           0 :     sent_samples += frame->nb_samples;
      84             : 
      85             :     // check for change in voice activity, if so, call callback
      86             :     // downcast MediaFrame to AudioFrame
      87           0 :     bool hasVoice = std::dynamic_pointer_cast<AudioFrame>(framePtr)->has_voice;
      88           0 :     if (hasVoice != voice_) {
      89           0 :         voice_ = hasVoice;
      90           0 :         if (voiceCallback_) {
      91           0 :             voiceCallback_(voice_);
      92             :         } else {
      93           0 :             JAMI_ERR("AudioSender no voice callback!");
      94             :         }
      95             :     }
      96             : 
      97           0 :     if (audioEncoder_->encodeAudio(*std::static_pointer_cast<AudioFrame>(framePtr)) < 0)
      98           0 :         JAMI_ERR("encoding failed");
      99           0 : }
     100             : 
     101             : void
     102         186 : AudioSender::setVoiceCallback(std::function<void(bool)> cb)
     103             : {
     104         186 :     if (cb) {
     105         186 :         voiceCallback_ = std::move(cb);
     106             :     } else {
     107           0 :         JAMI_ERR("AudioSender attempting to set invalid voice callback");
     108             :     }
     109         186 : }
     110             : 
     111             : uint16_t
     112           0 : AudioSender::getLastSeqValue()
     113             : {
     114           0 :     return audioEncoder_->getLastSeqValue();
     115             : }
     116             : 
     117             : int
     118           0 : AudioSender::setPacketLoss(uint64_t pl)
     119             : {
     120             :     // The encoder may be destroy during a bitrate change
     121             :     // when a codec parameter like auto quality change
     122           0 :     if (!audioEncoder_)
     123           0 :         return -1; // NOK
     124             : 
     125           0 :     return audioEncoder_->setPacketLoss(pl);
     126             : }
     127             : 
     128             : } // namespace jami