C++ (Cpp) gst_vorbis_dec_resetの例

コード例 #1

ファイル: gstvorbisdec.c プロジェクト: ChinnaSuhas/ossbuild

static GstStateChangeReturn
vorbis_dec_change_state (GstElement * element, GstStateChange transition)
{
  GstVorbisDec *vd = GST_VORBIS_DEC (element);
  GstStateChangeReturn res;

  switch (transition) {
    case GST_STATE_CHANGE_NULL_TO_READY:
      break;
    case GST_STATE_CHANGE_READY_TO_PAUSED:
      vorbis_info_init (&vd->vi);
      vorbis_comment_init (&vd->vc);
      vd->initialized = FALSE;
      gst_vorbis_dec_reset (vd);
      break;
    case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
      break;
    default:
      break;
  }

  res = parent_class->change_state (element, transition);

  switch (transition) {
    case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
      break;
    case GST_STATE_CHANGE_PAUSED_TO_READY:
      GST_DEBUG_OBJECT (vd, "PAUSED -> READY, clearing vorbis structures");
      vd->initialized = FALSE;

#ifndef USE_TREMOLO
      vorbis_block_clear (&vd->vb);
#endif

      vorbis_dsp_clear (&vd->vd);
      vorbis_comment_clear (&vd->vc);
      vorbis_info_clear (&vd->vi);
      gst_vorbis_dec_reset (vd);
      break;
    case GST_STATE_CHANGE_READY_TO_NULL:
      break;
    default:
      break;
  }

  return res;
}

コード例 #2

ファイル: gstvorbisdec.c プロジェクト: spunktsch/svtplayer

static gboolean
vorbis_dec_sink_event (GstPad * pad, GstEvent * event)
{
  gboolean ret = FALSE;
  GstVorbisDec *dec;

  dec = GST_VORBIS_DEC (gst_pad_get_parent (pad));

  GST_LOG_OBJECT (dec, "handling event");
  switch (GST_EVENT_TYPE (event)) {
    case GST_EVENT_EOS:
      if (dec->segment.rate < 0.0)
        vorbis_dec_chain_reverse (dec, TRUE, NULL);
      ret = gst_pad_push_event (dec->srcpad, event);
      break;
    case GST_EVENT_FLUSH_START:
      ret = gst_pad_push_event (dec->srcpad, event);
      break;
    case GST_EVENT_FLUSH_STOP:
      /* here we must clean any state in the decoder */
#ifdef HAVE_VORBIS_SYNTHESIS_RESTART
      vorbis_synthesis_restart (&dec->vd);
#endif
      gst_vorbis_dec_reset (dec);
      ret = gst_pad_push_event (dec->srcpad, event);
      break;
    case GST_EVENT_NEWSEGMENT:
    {
      GstFormat format;
      gdouble rate, arate;
      gint64 start, stop, time;
      gboolean update;

      gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
          &start, &stop, &time);

      /* we need time for now */
      if (format != GST_FORMAT_TIME)
        goto newseg_wrong_format;

      GST_DEBUG_OBJECT (dec,
          "newsegment: update %d, rate %g, arate %g, start %" GST_TIME_FORMAT
          ", stop %" GST_TIME_FORMAT ", time %" GST_TIME_FORMAT,
          update, rate, arate, GST_TIME_ARGS (start), GST_TIME_ARGS (stop),
          GST_TIME_ARGS (time));

      /* now configure the values */
      gst_segment_set_newsegment_full (&dec->segment, update,
          rate, arate, format, start, stop, time);
      dec->seqnum = gst_event_get_seqnum (event);

      if (dec->initialized)
        /* and forward */
        ret = gst_pad_push_event (dec->srcpad, event);
      else {
        /* store it to send once we're initialized */
        dec->pendingevents = g_list_append (dec->pendingevents, event);
        ret = TRUE;
      }
      break;
    }
    case GST_EVENT_TAG:
    {
      if (dec->initialized)
        /* and forward */
        ret = gst_pad_push_event (dec->srcpad, event);
      else {
        /* store it to send once we're initialized */
        dec->pendingevents = g_list_append (dec->pendingevents, event);
        ret = TRUE;
      }
      break;
    }
    default:
      ret = gst_pad_push_event (dec->srcpad, event);
      break;
  }
done:
  gst_object_unref (dec);

  return ret;

  /* ERRORS */
newseg_wrong_format:
  {
    GST_DEBUG_OBJECT (dec, "received non TIME newsegment");
    goto done;
  }
}