C++ (Cpp) gst_discoverer_subtitle_info_get_language示例

示例#1

文件： gst-discoverer.c 项目： MathieuDuponchelle/gst-plugins-base

static gchar *
gst_stream_subtitle_information_to_string (GstDiscovererStreamInfo * info,
    guint depth)
{
  GstDiscovererSubtitleInfo *subtitle_info;
  GString *s;
  const gchar *ctmp;
  int len = 400;
  const GstTagList *tags;

  g_return_val_if_fail (info != NULL, NULL);

  s = g_string_sized_new (len);

  gst_stream_information_to_string (info, s, depth);

  subtitle_info = (GstDiscovererSubtitleInfo *) info;
  ctmp = gst_discoverer_subtitle_info_get_language (subtitle_info);
  my_g_string_append_printf (s, depth, "Language: %s\n",
      ctmp ? ctmp : "<unknown>");

  tags = gst_discoverer_stream_info_get_tags (info);
  print_tags_topology (depth, tags);

  return g_string_free (s, FALSE);
}

示例#2

文件： gst-discoverer.c 项目： adenexter/gst-plugins-base

static gchar *
gst_stream_subtitle_information_to_string (GstDiscovererStreamInfo * info,
    gint depth)
{
  GstDiscovererSubtitleInfo *subtitle_info;
  GString *s;
  gchar *tmp;
  const gchar *ctmp;
  int len = 400;
  const GstTagList *tags;
  GstCaps *caps;

  g_return_val_if_fail (info != NULL, NULL);

  s = g_string_sized_new (len);

  my_g_string_append_printf (s, depth, "Codec:\n");
  caps = gst_discoverer_stream_info_get_caps (info);
  tmp = gst_caps_to_string (caps);
  gst_caps_unref (caps);
  my_g_string_append_printf (s, depth, "  %s\n", tmp);
  g_free (tmp);

  my_g_string_append_printf (s, depth, "Additional info:\n");
  if (gst_discoverer_stream_info_get_misc (info)) {
    tmp = gst_structure_to_string (gst_discoverer_stream_info_get_misc (info));
    my_g_string_append_printf (s, depth, "  %s\n", tmp);
    g_free (tmp);
  } else {
    my_g_string_append_printf (s, depth, "  None\n");
  }

  subtitle_info = (GstDiscovererSubtitleInfo *) info;
  ctmp = gst_discoverer_subtitle_info_get_language (subtitle_info);
  my_g_string_append_printf (s, depth, "Language: %s\n",
      ctmp ? ctmp : "<unknown>");

  my_g_string_append_printf (s, depth, "Tags:\n");
  tags = gst_discoverer_stream_info_get_tags (info);
  if (tags) {
    tmp = gst_structure_to_string ((GstStructure *) tags);
    my_g_string_append_printf (s, depth, "  %s\n", tmp);
    g_free (tmp);
  } else {
    my_g_string_append_printf (s, depth, "  None\n");
  }
  if (verbose)
    my_g_string_append_printf (s, depth, "\n");

  return g_string_free (s, FALSE);
}

示例#3

文件： discoverer.cpp 项目： kmikolaj/explayer

void Discoverer::on_discovered(GstDiscoverer *discoverer, GstDiscovererInfo *info, GError *err, Gstreamer *gst)
{
    Q_UNUSED(err);
    Q_UNUSED(discoverer);

    Metadata *meta = gst->getMetadata();
    delete meta;

    GstDiscovererResult result;
    result = gst_discoverer_info_get_result(info);
    if (result != GST_DISCOVERER_OK)
    {
        gst->setMetadata(nullptr);
        return;
    }

    meta = new Metadata();

    // is seekable
    meta->setSeekable(gst_discoverer_info_get_seekable(info));
    // extract duration
    qint64 time = gst_discoverer_info_get_duration(info);
    meta->setDuration(UTime(time));
    // extract filename
    QUrl uri(gst_discoverer_info_get_uri(info));
    meta->setFilename(uri.toLocalFile());
    // set filesize
    QFile file(uri.toLocalFile());
    meta->setSize(file.size());

    // extract tags
    const GstTagList *tags;
    tags = gst_discoverer_info_get_tags(info);
    if (tags)
    {
        gst_tag_list_foreach(tags, fillTags, meta);
    }

    GList *list, *iterator;

    // extract video streams
    iterator = list = gst_discoverer_info_get_video_streams(info);
    while (iterator)
    {
        Video video;
        GstDiscovererVideoInfo *vInfo = (GstDiscovererVideoInfo *)iterator->data;
        video.Width = gst_discoverer_video_info_get_width(vInfo);
        video.Height = gst_discoverer_video_info_get_height(vInfo);
        video.Framerate = double(gst_discoverer_video_info_get_framerate_num(vInfo)) /
                          double(gst_discoverer_video_info_get_framerate_denom(vInfo));
        meta->addVideo(video);
        iterator = iterator->next;
    }
    gst_discoverer_stream_info_list_free(list);

    // extract audio streams
    iterator = list = gst_discoverer_info_get_audio_streams(info);
    while (iterator)
    {
        Audio audio;
        GstDiscovererAudioInfo *aInfo = (GstDiscovererAudioInfo *)iterator->data;
        audio.Channels = gst_discoverer_audio_info_get_channels(aInfo);
        audio.SampleRate = gst_discoverer_audio_info_get_sample_rate(aInfo);
        audio.Language = gst_discoverer_audio_info_get_language(aInfo);
        meta->addAudio(audio);
        iterator = iterator->next;
    }
    gst_discoverer_stream_info_list_free(list);

    // extract subtitle streams
    iterator = list = gst_discoverer_info_get_subtitle_streams(info);
    while (iterator)
    {
        Subtitle subtitle;
        GstDiscovererSubtitleInfo *sInfo = (GstDiscovererSubtitleInfo *)iterator->data;
        gst_discoverer_subtitle_info_get_language(sInfo);
        subtitle.Language = gst_discoverer_subtitle_info_get_language(sInfo);
        meta->addSubtitles(subtitle);
        iterator = iterator->next;
    }
    gst_discoverer_stream_info_list_free(list);

    // fill metadata
    gst->setMetadata(meta);
    QObject::connect(gst->getMetadata(), SIGNAL(updated()), gst, SLOT(on_metadata_update()));
}