C++ (Cpp) gst_wavpack_parse_create_src_pad Beispiele

Beispiel #1

Datei: gstwavpackparse.c Projekt: matsu/gst-plugins-good

static GstFlowReturn
gst_wavpack_parse_chain (GstPad * pad, GstBuffer * buf)
{
  GstWavpackParse *wvparse = GST_WAVPACK_PARSE (GST_PAD_PARENT (pad));
  GstFlowReturn ret = GST_FLOW_OK;
  WavpackHeader wph;
  const guint8 *tmp_buf;

  if (!wvparse->adapter) {
    wvparse->adapter = gst_adapter_new ();
  }

  if (GST_BUFFER_IS_DISCONT (buf)) {
    gst_adapter_clear (wvparse->adapter);
    wvparse->discont = TRUE;
  }

  gst_adapter_push (wvparse->adapter, buf);

  if (gst_adapter_available (wvparse->adapter) < sizeof (WavpackHeader))
    return ret;

  if (!gst_wavpack_parse_resync_adapter (wvparse->adapter))
    return ret;

  tmp_buf = gst_adapter_peek (wvparse->adapter, sizeof (WavpackHeader));
  gst_wavpack_read_header (&wph, (guint8 *) tmp_buf);

  while (gst_adapter_available (wvparse->adapter) >= wph.ckSize + 4 * 1 + 4) {
    GstBuffer *outbuf =
        gst_adapter_take_buffer (wvparse->adapter, wph.ckSize + 4 * 1 + 4);

    if (!outbuf)
      return GST_FLOW_ERROR;

    if (wvparse->srcpad == NULL) {
      if (!gst_wavpack_parse_create_src_pad (wvparse, outbuf, &wph)) {
        GST_ERROR_OBJECT (wvparse, "Failed to create src pad");
        ret = GST_FLOW_ERROR;
        break;
      }
    }

    ret = gst_wavpack_parse_push_buffer (wvparse, outbuf, &wph);

    if (ret != GST_FLOW_OK)
      break;

    if (gst_adapter_available (wvparse->adapter) >= sizeof (WavpackHeader)) {
      tmp_buf = gst_adapter_peek (wvparse->adapter, sizeof (WavpackHeader));

      if (!gst_wavpack_parse_resync_adapter (wvparse->adapter))
        break;

      gst_wavpack_read_header (&wph, (guint8 *) tmp_buf);
    }
  }

  return ret;
}

Beispiel #2

Datei: gstwavpackparse.c Projekt: JJCG/gst-plugins-good

static void
gst_wavpack_parse_loop (GstElement * element)
{
  GstWavpackParse *parse = GST_WAVPACK_PARSE (element);

  GstFlowReturn flow_ret;
  WavpackHeader header = { {0,}, 0, };
  GstBuffer *buf = NULL;

  flow_ret = gst_wavpack_parse_resync_loop (parse, &header);

  if (flow_ret != GST_FLOW_OK)
    goto pause;

  GST_LOG_OBJECT (parse, "Read header at offset %" G_GINT64_FORMAT
      ": chunk size = %u+8", parse->current_offset, header.ckSize);

  buf = gst_wavpack_parse_pull_buffer (parse, parse->current_offset,
      header.ckSize + 8, &flow_ret);

  if (flow_ret != GST_FLOW_OK)
    goto pause;

  if (parse->srcpad == NULL) {
    if (!gst_wavpack_parse_create_src_pad (parse, buf, &header)) {
      GST_ERROR_OBJECT (parse, "Failed to create src pad");
      flow_ret = GST_FLOW_ERROR;
      goto pause;
    }
  }
  if (header.flags & INITIAL_BLOCK)
    gst_wavpack_parse_index_append_entry (parse, parse->current_offset,
        header.block_index, header.block_samples);

  flow_ret = gst_wavpack_parse_push_buffer (parse, buf, &header);
  if (flow_ret != GST_FLOW_OK)
    goto pause;

  return;

pause:
  {
    const gchar *reason = gst_flow_get_name (flow_ret);

    GST_LOG_OBJECT (parse, "pausing task, reason %s", reason);
    gst_pad_pause_task (parse->sinkpad);

    if (GST_FLOW_IS_FATAL (flow_ret) || flow_ret == GST_FLOW_NOT_LINKED) {
      if (flow_ret == GST_FLOW_UNEXPECTED && parse->srcpad) {
        if (parse->segment.flags & GST_SEEK_FLAG_SEGMENT) {
          GstClockTime stop;

          GST_LOG_OBJECT (parse, "Sending segment done");

          if ((stop = parse->segment.stop) == -1)
            stop = parse->segment.duration;

          gst_element_post_message (GST_ELEMENT_CAST (parse),
              gst_message_new_segment_done (GST_OBJECT_CAST (parse),
                  parse->segment.format, stop));
        } else {
          GST_LOG_OBJECT (parse, "Sending EOS, at end of stream");
          gst_pad_push_event (parse->srcpad, gst_event_new_eos ());
        }
      } else {
        GST_ELEMENT_ERROR (parse, STREAM, FAILED,
            (_("Internal data stream error.")),
            ("stream stopped, reason %s", reason));
        if (parse->srcpad)
          gst_pad_push_event (parse->srcpad, gst_event_new_eos ());
      }
    }
    return;
  }
}