示例#1
0
static gboolean
create_elements (RsnDvdBin * dvdbin)
{
  GstPad *src = NULL;
  GstPad *sink = NULL;

  if (!try_create_piece (dvdbin, DVD_ELEM_SOURCE, NULL,
          RESIN_TYPE_DVDSRC, "dvdsrc", "DVD source")) {
    return FALSE;
  }

  /* FIXME: Locking */
  if (dvdbin->device) {
    g_object_set (G_OBJECT (dvdbin->pieces[DVD_ELEM_SOURCE]),
        "device", dvdbin->device, NULL);
  }

  if (!try_create_piece (dvdbin, DVD_ELEM_DEMUX,
          NULL, GST_TYPE_FLUPS_DEMUX, "dvddemux", "DVD demuxer"))
    return FALSE;

  if (gst_element_link (dvdbin->pieces[DVD_ELEM_SOURCE],
          dvdbin->pieces[DVD_ELEM_DEMUX]) == FALSE)
    goto failed_connect;

  /* Listen for new pads from the demuxer */
  g_signal_connect (G_OBJECT (dvdbin->pieces[DVD_ELEM_DEMUX]), "pad-added",
      G_CALLBACK (demux_pad_added), dvdbin);

  if (!try_create_piece (dvdbin, DVD_ELEM_MQUEUE, "multiqueue", 0, "mq",
          "multiqueue"))
    return FALSE;

  g_object_set (dvdbin->pieces[DVD_ELEM_MQUEUE],
      "max-size-time", (7 * GST_SECOND / 10), "max-size-bytes", 0,
      "max-size-buffers", 0, NULL);

  /* Decodebin will throw a missing element message to find an MPEG decoder */
  if (!try_create_piece (dvdbin, DVD_ELEM_VIDDEC, "decodebin", 0, "viddec",
          "video decoder"))
    return FALSE;

  g_signal_connect (G_OBJECT (dvdbin->pieces[DVD_ELEM_VIDDEC]),
      "new-decoded-pad", G_CALLBACK (viddec_pad_added), dvdbin);

  if (!try_create_piece (dvdbin, DVD_ELEM_PARSET, NULL, RSN_TYPE_RSNPARSETTER,
          "rsnparsetter", "Aspect ratio adjustment"))
    return FALSE;

#if USE_VIDEOQ
  /* Add a small amount of queueing after the video decoder. */
  if (!try_create_piece (dvdbin, DVD_ELEM_VIDQ, "queue", 0, "vid_q",
          "video decoder buffer"))
    return FALSE;
  g_object_set (dvdbin->pieces[DVD_ELEM_VIDQ],
      "max-size-time", G_GUINT64_CONSTANT (0), "max-size-bytes", 0,
      "max-size-buffers", 3, NULL);

  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_PARSET], "src");
  sink = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_VIDQ], "sink");
  if (src == NULL || sink == NULL)
    goto failed_vidq_connect;
  if (GST_PAD_LINK_FAILED (gst_pad_link (src, sink)))
    goto failed_vidq_connect;
  gst_object_unref (src);
  gst_object_unref (sink);
  src = sink = NULL;

  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_VIDQ], "src");
#else
  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_PARSET], "src");
#endif
  if (src == NULL)
    goto failed_video_ghost;
  dvdbin->video_pad = gst_ghost_pad_new ("video", src);
  if (dvdbin->video_pad == NULL)
    goto failed_video_ghost;
  gst_object_unref (src);
  src = NULL;

  if (!try_create_piece (dvdbin, DVD_ELEM_SPU_SELECT, NULL,
          RSN_TYPE_STREAM_SELECTOR, "subpselect", "Subpicture stream selector"))
    return FALSE;

  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_SPU_SELECT], "src");
  if (src == NULL)
    goto failed_spu_ghost;
  dvdbin->subpicture_pad = gst_ghost_pad_new ("subpicture", src);
  if (dvdbin->subpicture_pad == NULL)
    goto failed_spu_ghost;
  gst_pad_set_active (dvdbin->subpicture_pad, TRUE);
  gst_pad_set_blocked_async (dvdbin->subpicture_pad, TRUE,
      (GstPadBlockCallback) dvdbin_pad_blocked_cb, dvdbin);
  gst_object_unref (src);
  src = NULL;

  if (!try_create_piece (dvdbin, DVD_ELEM_AUD_SELECT, NULL,
          RSN_TYPE_STREAM_SELECTOR, "audioselect", "Audio stream selector"))
    return FALSE;

  /* rsnaudiomunge goes after the audio decoding to regulate the stream */
  if (!try_create_piece (dvdbin, DVD_ELEM_AUD_MUNGE, NULL,
          RSN_TYPE_AUDIOMUNGE, "audiomunge", "Audio output filter"))
    return FALSE;

#if DECODEBIN_AUDIO
  /* Decodebin will throw a missing element message to find a suitable
   * decoder */
  if (!try_create_piece (dvdbin, DVD_ELEM_AUDDEC, "decodebin", 0, "auddec",
          "audio decoder"))
    return FALSE;

  g_signal_connect (G_OBJECT (dvdbin->pieces[DVD_ELEM_AUDDEC]),
      "new-decoded-pad", G_CALLBACK (auddec_pad_added), dvdbin);
#else
  if (!try_create_piece (dvdbin, DVD_ELEM_AUDDEC, "a52dec", 0, "auddec",
          "audio decoder"))
    return FALSE;

  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUDDEC], "src");
  sink =
      gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUD_MUNGE], "sink");
  if (src == NULL || sink == NULL)
    goto failed_aud_connect;
  if (GST_PAD_LINK_FAILED (gst_pad_link (src, sink)))
    goto failed_aud_connect;
  gst_object_unref (sink);
  gst_object_unref (src);
  src = sink = NULL;
#endif

  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUD_SELECT], "src");
  sink = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUDDEC], "sink");
  if (src == NULL || sink == NULL)
    goto failed_aud_connect;
  if (GST_PAD_LINK_FAILED (gst_pad_link (src, sink)))
    goto failed_aud_connect;
  gst_object_unref (sink);
  gst_object_unref (src);
  src = sink = NULL;

  /* ghost audio munge output pad onto bin */
  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUD_MUNGE], "src");
  if (src == NULL)
    goto failed_aud_ghost;
  dvdbin->audio_pad = gst_ghost_pad_new ("audio", src);
  if (dvdbin->audio_pad == NULL)
    goto failed_aud_ghost;
  gst_pad_set_active (dvdbin->audio_pad, TRUE);
  gst_pad_set_blocked_async (dvdbin->audio_pad, TRUE,
      (GstPadBlockCallback) dvdbin_pad_blocked_cb, dvdbin);
  gst_object_unref (src);
  src = NULL;

  return TRUE;

failed_connect:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not connect DVD source and demuxer elements"));
  goto error_out;
#if USE_VIDEOQ
failed_vidq_connect:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not connect DVD aspect ratio adjuster and video buffer elements"));
  goto error_out;
#endif
failed_video_ghost:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not ghost SPU output pad"));
  goto error_out;
failed_spu_ghost:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not ghost SPU output pad"));
  goto error_out;
failed_aud_connect:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not connect DVD audio decoder"));
  goto error_out;
failed_aud_ghost:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not ghost audio output pad"));
  goto error_out;
error_out:
  if (src != NULL)
    gst_object_unref (src);
  if (sink != NULL)
    gst_object_unref (sink);
  return FALSE;
}
示例#2
0
static gboolean
create_elements (RsnDvdBin * dvdbin)
{
  GstPadTemplate *src_templ = NULL;
  GstPad *src = NULL;
  GstPad *sink = NULL;
  RsnDvdBinPadBlockCtx *bctx = NULL;

  if (!try_create_piece (dvdbin, DVD_ELEM_SOURCE, NULL,
          RESIN_TYPE_DVDSRC, "dvdsrc", "DVD source")) {
    return FALSE;
  }

  /* FIXME: Locking */
  if (dvdbin->device) {
    g_object_set (G_OBJECT (dvdbin->pieces[DVD_ELEM_SOURCE]),
        "device", dvdbin->device, NULL);
  }

  if (!try_create_piece (dvdbin, DVD_ELEM_DEMUX,
          NULL, GST_TYPE_FLUPS_DEMUX, "dvddemux", "DVD demuxer"))
    return FALSE;

  if (gst_element_link (dvdbin->pieces[DVD_ELEM_SOURCE],
          dvdbin->pieces[DVD_ELEM_DEMUX]) == FALSE)
    goto failed_connect;

  /* Listen for new pads from the demuxer */
  g_signal_connect (G_OBJECT (dvdbin->pieces[DVD_ELEM_DEMUX]), "pad-added",
      G_CALLBACK (demux_pad_added), dvdbin);

  g_signal_connect (G_OBJECT (dvdbin->pieces[DVD_ELEM_DEMUX]), "no-more-pads",
      G_CALLBACK (demux_no_more_pads), dvdbin);

  if (!try_create_piece (dvdbin, DVD_ELEM_MQUEUE, "multiqueue", 0, "mq",
          "multiqueue"))
    return FALSE;

  g_object_set (dvdbin->pieces[DVD_ELEM_MQUEUE],
      "max-size-time", (7 * GST_SECOND / 10), "max-size-bytes", 0,
      "max-size-buffers", 0, NULL);

  /* Decodebin will throw a missing element message to find an MPEG decoder */
  if (!try_create_piece (dvdbin, DVD_ELEM_VIDDEC, NULL, RSN_TYPE_VIDEODEC,
          "viddec", "video decoder"))
    return FALSE;

  if (!try_create_piece (dvdbin, DVD_ELEM_PARSET, NULL, RSN_TYPE_RSNPARSETTER,
          "rsnparsetter", "Aspect ratio adjustment"))
    return FALSE;

  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_VIDDEC], "src");
  sink = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_PARSET], "sink");
  if (src == NULL || sink == NULL)
    goto failed_viddec_connect;
  if (GST_PAD_LINK_FAILED (gst_pad_link (src, sink)))
    goto failed_viddec_connect;
  gst_object_unref (src);
  gst_object_unref (sink);
  src = sink = NULL;

  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_PARSET], "src");
  if (src == NULL)
    goto failed_video_ghost;
  src_templ = gst_static_pad_template_get (&video_src_template);
  dvdbin->video_pad = gst_ghost_pad_new_from_template ("video", src, src_templ);
  gst_object_unref (src_templ);
  if (dvdbin->video_pad == NULL)
    goto failed_video_ghost;
  gst_pad_set_active (dvdbin->video_pad, TRUE);
  bctx = g_slice_new (RsnDvdBinPadBlockCtx);
  bctx->dvdbin = gst_object_ref (dvdbin);
  bctx->pad = gst_object_ref (dvdbin->video_pad);
  gst_pad_set_blocked_async_full (src, TRUE,
      (GstPadBlockCallback) dvdbin_pad_blocked_cb, bctx, (GDestroyNotify)
      _pad_block_destroy_notify);
  gst_object_unref (src);
  src = NULL;

  if (!try_create_piece (dvdbin, DVD_ELEM_SPU_SELECT, NULL,
          RSN_TYPE_STREAM_SELECTOR, "subpselect", "Subpicture stream selector"))
    return FALSE;

  /* Add a single standalone queue to hold a single buffer of SPU data */
  if (!try_create_piece (dvdbin, DVD_ELEM_SPUQ, "queue", 0, "spu_q",
          "subpicture decoder buffer"))
    return FALSE;
  g_object_set (dvdbin->pieces[DVD_ELEM_SPUQ],
      "max-size-time", G_GUINT64_CONSTANT (0), "max-size-bytes", 0,
      "max-size-buffers", 1, NULL);

  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_SPU_SELECT], "src");
  sink = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_SPUQ], "sink");
  if (src == NULL || sink == NULL)
    goto failed_spuq_connect;
  if (GST_PAD_LINK_FAILED (gst_pad_link (src, sink)))
    goto failed_spuq_connect;
  gst_object_unref (src);
  gst_object_unref (sink);
  src = sink = NULL;

  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_SPUQ], "src");
  if (src == NULL)
    goto failed_spu_ghost;
  src_templ = gst_static_pad_template_get (&subpicture_src_template);
  dvdbin->subpicture_pad =
      gst_ghost_pad_new_from_template ("subpicture", src, src_templ);
  gst_object_unref (src_templ);
  if (dvdbin->subpicture_pad == NULL)
    goto failed_spu_ghost;
  gst_pad_set_active (dvdbin->subpicture_pad, TRUE);
  bctx = g_slice_new (RsnDvdBinPadBlockCtx);
  bctx->dvdbin = gst_object_ref (dvdbin);
  bctx->pad = gst_object_ref (dvdbin->subpicture_pad);
  gst_pad_set_blocked_async_full (src, TRUE,
      (GstPadBlockCallback) dvdbin_pad_blocked_cb, bctx, (GDestroyNotify)
      _pad_block_destroy_notify);
  gst_object_unref (src);
  src = NULL;

  if (!try_create_piece (dvdbin, DVD_ELEM_AUD_SELECT, NULL,
          RSN_TYPE_STREAM_SELECTOR, "audioselect", "Audio stream selector"))
    return FALSE;

  if (!try_create_piece (dvdbin, DVD_ELEM_AUDDEC, NULL,
          RSN_TYPE_AUDIODEC, "auddec", "audio decoder"))
    return FALSE;

  /* rsnaudiomunge goes after the audio decoding to regulate the stream */
  if (!try_create_piece (dvdbin, DVD_ELEM_AUD_MUNGE, NULL,
          RSN_TYPE_AUDIOMUNGE, "audiomunge", "Audio output filter"))
    return FALSE;

  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUDDEC], "src");
  sink =
      gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUD_MUNGE], "sink");
  if (src == NULL || sink == NULL)
    goto failed_aud_connect;
  if (GST_PAD_LINK_FAILED (gst_pad_link (src, sink)))
    goto failed_aud_connect;
  gst_object_unref (sink);
  gst_object_unref (src);
  src = sink = NULL;

  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUD_SELECT], "src");
  sink = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUDDEC], "sink");
  if (src == NULL || sink == NULL)
    goto failed_aud_connect;
  if (GST_PAD_LINK_FAILED (gst_pad_link (src, sink)))
    goto failed_aud_connect;
  gst_object_unref (sink);
  gst_object_unref (src);
  src = sink = NULL;

  /* ghost audio munge output pad onto bin */
  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUD_MUNGE], "src");
  if (src == NULL)
    goto failed_aud_ghost;
  src_templ = gst_static_pad_template_get (&audio_src_template);
  dvdbin->audio_pad = gst_ghost_pad_new_from_template ("audio", src, src_templ);
  gst_object_unref (src_templ);
  if (dvdbin->audio_pad == NULL)
    goto failed_aud_ghost;
  gst_pad_set_active (dvdbin->audio_pad, TRUE);
  bctx = g_slice_new (RsnDvdBinPadBlockCtx);
  bctx->dvdbin = gst_object_ref (dvdbin);
  bctx->pad = gst_object_ref (dvdbin->audio_pad);
  gst_pad_set_blocked_async_full (src, TRUE,
      (GstPadBlockCallback) dvdbin_pad_blocked_cb, bctx, (GDestroyNotify)
      _pad_block_destroy_notify);
  gst_object_unref (src);
  src = NULL;

  if (dvdbin->video_added && (dvdbin->audio_added || dvdbin->audio_broken)
      && dvdbin->subpicture_added) {
    GST_DEBUG_OBJECT (dvdbin, "Firing no more pads");
    gst_element_no_more_pads (GST_ELEMENT (dvdbin));
  }

  return TRUE;

failed_connect:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not connect DVD source and demuxer elements"));
  goto error_out;
failed_viddec_connect:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not connect DVD video decoder and aspect ratio adjuster"));
  goto error_out;
failed_video_ghost:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not ghost video output pad"));
  goto error_out;
failed_spuq_connect:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not connect DVD subpicture selector and buffer elements"));
  goto error_out;
failed_spu_ghost:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not ghost SPU output pad"));
  goto error_out;
failed_aud_connect:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not connect DVD audio decoder"));
  goto error_out;
failed_aud_ghost:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not ghost audio output pad"));
  goto error_out;
error_out:
  if (src != NULL)
    gst_object_unref (src);
  if (sink != NULL)
    gst_object_unref (sink);
  return FALSE;
}
示例#3
0
static gboolean
create_elements (RsnDvdBin * dvdbin)
{
  GstPadTemplate *src_templ = NULL;
  GstPad *src = NULL;
  GstPad *sink = NULL;
  RsnDvdBinPadBlockCtx *bctx = NULL;

  if (!try_create_piece (dvdbin, DVD_ELEM_SOURCE, NULL,
          RESIN_TYPE_DVDSRC, "dvdsrc", "DVD source")) {
    return FALSE;
  }

  /* FIXME: Locking */
  if (dvdbin->device) {
    g_object_set (G_OBJECT (dvdbin->pieces[DVD_ELEM_SOURCE]),
        "device", dvdbin->device, NULL);
  }

  /* FIXME: Import and use local copy of mpeg PS demuxer */
  if (!try_create_piece (dvdbin, DVD_ELEM_DEMUX,
          NULL, GST_TYPE_FLUPS_DEMUX, "dvddemux", "DVD demuxer"))
    return FALSE;

  if (gst_element_link (dvdbin->pieces[DVD_ELEM_SOURCE],
          dvdbin->pieces[DVD_ELEM_DEMUX]) == FALSE)
    goto failed_connect;

  /* Listen for new pads from the demuxer */
  g_signal_connect (G_OBJECT (dvdbin->pieces[DVD_ELEM_DEMUX]), "pad-added",
      G_CALLBACK (demux_pad_added), dvdbin);

  g_signal_connect (G_OBJECT (dvdbin->pieces[DVD_ELEM_DEMUX]), "no-more-pads",
      G_CALLBACK (demux_no_more_pads), dvdbin);

  if (!try_create_piece (dvdbin, DVD_ELEM_MQUEUE, "multiqueue", 0, "rsnmq",
          "multiqueue"))
    return FALSE;

  g_object_set (dvdbin->pieces[DVD_ELEM_MQUEUE],
      "max-size-time", (7 * GST_SECOND / 10), "max-size-bytes", 0,
      "max-size-buffers", 0, NULL);

  if (!try_create_piece (dvdbin, DVD_ELEM_VIDPARSE, "mpegvideoparse", 0,
          "rsnvidparse", "video parser"))
    return FALSE;

  /* Decodebin will throw a missing element message to find an MPEG decoder */
  if (!try_create_piece (dvdbin, DVD_ELEM_VIDDEC, NULL, RSN_TYPE_VIDEODEC,
          "rsnviddec", "video decoder"))
    return FALSE;

  /* FIXME: Replace identity */
  if (!try_create_piece (dvdbin, DVD_ELEM_PARSET, NULL, RSN_TYPE_RSNPARSETTER,
          "rsnparsetter", "Aspect ratio adjustment"))
    return FALSE;

  if (!try_link_pieces (dvdbin->pieces[DVD_ELEM_VIDPARSE], "src",
          dvdbin->pieces[DVD_ELEM_VIDDEC], "sink"))
    goto failed_vidparse_connect;

  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_VIDDEC], "src");
  sink = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_PARSET], "sink");
  if (src == NULL || sink == NULL)
    goto failed_viddec_connect;
  if (GST_PAD_LINK_FAILED (gst_pad_link (src, sink)))
    goto failed_viddec_connect;
  gst_object_unref (src);
  gst_object_unref (sink);
  src = sink = NULL;

  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_PARSET], "src");
  if (src == NULL)
    goto failed_video_ghost;
  src_templ = gst_static_pad_template_get (&video_src_template);
  dvdbin->video_pad = gst_ghost_pad_new_from_template ("video", src, src_templ);
  gst_object_unref (src_templ);
  if (dvdbin->video_pad == NULL)
    goto failed_video_ghost;
  gst_pad_set_active (dvdbin->video_pad, TRUE);
  bctx = g_slice_new (RsnDvdBinPadBlockCtx);
  bctx->dvdbin = gst_object_ref (dvdbin);
  bctx->pad = gst_object_ref (dvdbin->video_pad);
  bctx->pad_block_id =
      gst_pad_add_probe (src, GST_PAD_PROBE_TYPE_BLOCK_DOWNSTREAM,
      (GstPadProbeCallback) dvdbin_pad_blocked_cb, bctx, (GDestroyNotify)
      _pad_block_destroy_notify);
  gst_object_unref (src);
  src = NULL;

#if DEBUG_TIMING
  gst_pad_add_probe (dvdbin->video_pad,
      GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM | GST_PAD_PROBE_TYPE_BUFFER |
      GST_PAD_PROBE_TYPE_EVENT_FLUSH,
      (GstPadProbeCallback) dvdbin_dump_timing_info, NULL, NULL);
#endif

  /* FIXME: Merge stream-selection logic to core and switch back */
  if (!try_create_piece (dvdbin, DVD_ELEM_SPU_SELECT, NULL,
          RSN_TYPE_INPUT_SELECTOR, "subpselect", "Subpicture stream selector"))
    return FALSE;

  g_object_set (G_OBJECT (dvdbin->pieces[DVD_ELEM_SPU_SELECT]),
      "sync-streams", FALSE, NULL);

  /* Add a single standalone queue to hold a single buffer of SPU data */
  if (!try_create_piece (dvdbin, DVD_ELEM_SPUQ, "queue", 0, "spu_q",
          "subpicture decoder buffer"))
    return FALSE;
  /* Allow a lot more while pre-rolling */
  g_object_set (dvdbin->pieces[DVD_ELEM_SPUQ],
      "max-size-time", G_GUINT64_CONSTANT (0), "max-size-bytes", 0,
      "max-size-buffers", 100, NULL);

  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_SPU_SELECT], "src");
  sink = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_SPUQ], "sink");
  if (src == NULL || sink == NULL)
    goto failed_spuq_connect;
  if (GST_PAD_LINK_FAILED (gst_pad_link (src, sink)))
    goto failed_spuq_connect;
  gst_object_unref (src);
  gst_object_unref (sink);
  src = sink = NULL;

  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_SPUQ], "src");
  if (src == NULL)
    goto failed_spu_ghost;
  src_templ = gst_static_pad_template_get (&subpicture_src_template);
  dvdbin->subpicture_pad =
      gst_ghost_pad_new_from_template ("subpicture", src, src_templ);
  gst_object_unref (src_templ);
  if (dvdbin->subpicture_pad == NULL)
    goto failed_spu_ghost;
  gst_pad_set_active (dvdbin->subpicture_pad, TRUE);
  bctx = g_slice_new (RsnDvdBinPadBlockCtx);
  bctx->dvdbin = gst_object_ref (dvdbin);
  bctx->pad = gst_object_ref (dvdbin->subpicture_pad);
  bctx->pad_block_id =
      gst_pad_add_probe (src, GST_PAD_PROBE_TYPE_BLOCK_DOWNSTREAM,
      (GstPadProbeCallback) dvdbin_pad_blocked_cb, bctx, (GDestroyNotify)
      _pad_block_destroy_notify);
  gst_object_unref (src);
  src = NULL;

  if (!try_create_piece (dvdbin, DVD_ELEM_AUD_SELECT, NULL,
          RSN_TYPE_INPUT_SELECTOR, "audioselect", "Audio stream selector"))
    return FALSE;
  g_object_set (G_OBJECT (dvdbin->pieces[DVD_ELEM_AUD_SELECT]),
      "sync-streams", FALSE, NULL);

  if (!try_create_piece (dvdbin, DVD_ELEM_AUDDEC, NULL,
          RSN_TYPE_AUDIODEC, "auddec", "audio decoder"))
    return FALSE;

  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUD_SELECT], "src");
  sink = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUDDEC], "sink");
  if (src == NULL || sink == NULL)
    goto failed_aud_connect;
  if (GST_PAD_LINK_FAILED (gst_pad_link (src, sink)))
    goto failed_aud_connect;
  gst_object_unref (sink);
  gst_object_unref (src);
  src = sink = NULL;

  /* ghost audio munge output pad onto bin */
  src = gst_element_get_static_pad (dvdbin->pieces[DVD_ELEM_AUDDEC], "src");
  if (src == NULL)
    goto failed_aud_ghost;
  src_templ = gst_static_pad_template_get (&audio_src_template);
  dvdbin->audio_pad = gst_ghost_pad_new_from_template ("audio", src, src_templ);
  gst_object_unref (src_templ);
  if (dvdbin->audio_pad == NULL)
    goto failed_aud_ghost;
  gst_pad_set_active (dvdbin->audio_pad, TRUE);
  bctx = g_slice_new (RsnDvdBinPadBlockCtx);
  bctx->dvdbin = gst_object_ref (dvdbin);
  bctx->pad = gst_object_ref (dvdbin->audio_pad);
  bctx->pad_block_id =
      gst_pad_add_probe (src, GST_PAD_PROBE_TYPE_BLOCK_DOWNSTREAM,
      (GstPadProbeCallback) dvdbin_pad_blocked_cb, bctx, (GDestroyNotify)
      _pad_block_destroy_notify);
  gst_object_unref (src);
  src = NULL;

  if (dvdbin->video_added && (dvdbin->audio_added || dvdbin->audio_broken)
      && dvdbin->subpicture_added) {
    rsn_dvdbin_no_more_pads (dvdbin);
  }

  return TRUE;

failed_connect:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not connect DVD source and demuxer elements"));
  goto error_out;
failed_vidparse_connect:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not connect DVD video parser and video decoder"));
  goto error_out;
failed_viddec_connect:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not connect DVD video decoder and aspect ratio adjuster"));
  goto error_out;
failed_video_ghost:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not ghost video output pad"));
  goto error_out;
failed_spuq_connect:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not connect DVD subpicture selector and buffer elements"));
  goto error_out;
failed_spu_ghost:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not ghost SPU output pad"));
  goto error_out;
failed_aud_connect:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not connect DVD audio decoder"));
  goto error_out;
failed_aud_ghost:
  GST_ELEMENT_ERROR (dvdbin, CORE, FAILED, (NULL),
      ("Could not ghost audio output pad"));
  goto error_out;
error_out:
  if (src != NULL)
    gst_object_unref (src);
  if (sink != NULL)
    gst_object_unref (sink);
  return FALSE;
}