Line data    Source code

       1              : /*  Copyright (C) 2004-2026 Savoir-faire Linux Inc.
       2              :  *
       3              :  *  Inspired by tonegenerator of
       4              :  *   Laurielle Lea <laurielle.lea@savoirfairelinux.com> (2004)
       5              :  *  Inspired by ringbuffer of Audacity Project
       6              :  *
       7              :  *  This program is free software: you can redistribute it and/or modify
       8              :  *  it under the terms of the GNU General Public License as published by
       9              :  *  the Free Software Foundation, either version 3 of the License, or
      10              :  *  (at your option) any later version.
      11              :  *
      12              :  *  This program is distributed in the hope that it will be useful,
      13              :  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
      14              :  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
      15              :  *  GNU General Public License for more details.
      16              :  *
      17              :  *  You should have received a copy of the GNU General Public License
      18              :  *  along with this program. If not, see <https://www.gnu.org/licenses/>.
      19              :  */
      20              : #include <fstream>
      21              : #include <cmath>
      22              : #include <cstring>
      23              : #include <vector>
      24              : #include <climits>
      25              : 
      26              : #include "libav_deps.h"
      27              : #include "audiofile.h"
      28              : #include "audio/resampler.h"
      29              : #include "manager.h"
      30              : #include "media_decoder.h"
      31              : #include "client/jami_signal.h"
      32              : 
      33              : #include "logger.h"
      34              : 
      35              : namespace jami {
      36              : 
      37              : void
      38            0 : AudioFile::onBufferFinish()
      39              : {
      40            0 :     if (buffer_->sample_rate == 0) {
      41            0 :         JAMI_ERROR("Error unable to update playback slider, sampling rate is 0");
      42            0 :         return;
      43              :     }
      44              : 
      45              :     // We want to send values in milisecond
      46            0 :     if ((updatePlaybackScale_ % 5) == 0)
      47            0 :         emitSignal<libjami::CallSignal::UpdatePlaybackScale>(filepath_,
      48            0 :                                                              (unsigned) (1000lu * pos_ / buffer_->sample_rate),
      49            0 :                                                              (unsigned) (1000lu * buffer_->nb_samples
      50            0 :                                                                          / buffer_->sample_rate));
      51              : 
      52            0 :     updatePlaybackScale_++;
      53              : }
      54              : 
      55           55 : AudioFile::AudioFile(const std::string& fileName, unsigned int sampleRate, AVSampleFormat sampleFormat)
      56              :     : AudioLoop(AudioFormat(sampleRate, 1, sampleFormat))
      57           55 :     , filepath_(fileName)
      58           55 :     , updatePlaybackScale_(0)
      59              : {
      60           55 :     std::list<std::shared_ptr<AudioFrame>> buf;
      61           55 :     size_t total_samples = 0;
      62              : 
      63           55 :     auto start = std::chrono::steady_clock::now();
      64           55 :     Resampler r {};
      65              :     auto decoder = std::make_unique<MediaDecoder>(
      66            0 :         [&r, this, &buf, &total_samples](const std::shared_ptr<MediaFrame>& frame) mutable {
      67            0 :             auto resampled = r.resample(std::static_pointer_cast<AudioFrame>(frame), format_);
      68            0 :             total_samples += resampled->getFrameSize();
      69            0 :             buf.emplace_back(std::move(resampled));
      70           55 :         });
      71           55 :     DeviceParams dev;
      72           55 :     dev.input = fileName;
      73           55 :     dev.name = fileName;
      74              : 
      75           55 :     if (decoder->openInput(dev) < 0)
      76           55 :         throw AudioFileException("Unable to open file: " + fileName);
      77              : 
      78            0 :     if (decoder->setupAudio() < 0)
      79            0 :         throw AudioFileException("Decoder setup failed: " + fileName);
      80              : 
      81            0 :     while (decoder->decode() != MediaDemuxer::Status::EndOfFile)
      82              :         ;
      83              : 
      84            0 :     buffer_->nb_samples = total_samples;
      85            0 :     buffer_->format = format_.sampleFormat;
      86            0 :     buffer_->sample_rate = format_.sample_rate;
      87            0 :     av_channel_layout_default(&buffer_->ch_layout, format_.nb_channels);
      88            0 :     av_frame_get_buffer(buffer_.get(), 0);
      89              : 
      90            0 :     size_t outPos = 0;
      91            0 :     for (auto& frame : buf) {
      92            0 :         av_samples_copy(buffer_->data,
      93            0 :                         frame->pointer()->data,
      94              :                         outPos,
      95              :                         0,
      96            0 :                         frame->getFrameSize(),
      97            0 :                         format_.nb_channels,
      98              :                         format_.sampleFormat);
      99            0 :         outPos += frame->getFrameSize();
     100              :     }
     101            0 :     auto end = std::chrono::steady_clock::now();
     102            0 :     auto audioDuration = std::chrono::duration<double>(total_samples / (double) format_.sample_rate);
     103            0 :     JAMI_LOG("AudioFile: loaded {} samples ({}) as {} in {} from {:s}",
     104              :              total_samples,
     105              :              audioDuration,
     106              :              format_.toString(),
     107              :              dht::print_duration(end - start),
     108              :              fileName);
     109            0 : }
     110              : 
     111              : } // namespace jami