src/lib/ffmpeg_audio_stream.cc

   1 /*
   2     Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of DCP-o-matic.
   5
   6     DCP-o-matic is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     DCP-o-matic is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 */
  20
  21
  22 #include "ffmpeg_audio_stream.h"
  23 #include <dcp/raw_convert.h>
  24 #include "warnings.h"
  25 DCPOMATIC_DISABLE_WARNINGS
  26 #include <libxml++/libxml++.h>
  27 DCPOMATIC_ENABLE_WARNINGS
  28 #include <libcxml/cxml.h>
  29
  30
  31 using std::string;
  32 using boost::optional;
  33 using dcp::raw_convert;
  34 using namespace dcpomatic;
  35
  36
  37 FFmpegAudioStream::FFmpegAudioStream (cxml::ConstNodePtr node, int version)
  38         : FFmpegStream (node)
  39         , AudioStream (
  40                 node->number_child<int>("FrameRate"),
  41                 node->optional_number_child<Frame>("Length").get_value_or(0),
  42                 AudioMapping (node->node_child("Mapping"), version)
  43                 )
  44 {
  45         optional<ContentTime::Type> const f = node->optional_number_child<ContentTime::Type>("FirstAudio");
  46         if (f) {
  47                 first_audio = ContentTime(f.get());
  48         }
  49         codec_name = node->optional_string_child("CodecName");
  50 }
  51
  52
  53 void
  54 FFmpegAudioStream::as_xml (xmlpp::Node* root) const
  55 {
  56         FFmpegStream::as_xml (root);
  57         root->add_child("FrameRate")->add_child_text(raw_convert<string>(frame_rate()));
  58         root->add_child("Length")->add_child_text(raw_convert<string>(length()));
  59         mapping().as_xml (root->add_child("Mapping"));
  60         if (first_audio) {
  61                 root->add_child("FirstAudio")->add_child_text(raw_convert<string>(first_audio.get().get()));
  62         }
  63         if (codec_name) {
  64                 root->add_child("CodecName")->add_child_text(codec_name.get());
  65         }
  66 }