C++ (Cpp) gst_multi_file_src_get_filenameの例

コード例 #1

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

static GstFlowReturn
gst_multi_file_src_create (GstPushSrc * src, GstBuffer ** buffer)
{
  GstMultiFileSrc *multifilesrc;
  gsize size;
  gchar *data;
  gchar *filename;
  GstBuffer *buf;
  gboolean ret;
  GError *error = NULL;

  multifilesrc = GST_MULTI_FILE_SRC (src);

  filename = gst_multi_file_src_get_filename (multifilesrc);

  GST_DEBUG_OBJECT (multifilesrc, "reading from file \"%s\".", filename);

  ret = g_file_get_contents (filename, &data, &size, &error);
  if (!ret) {
    if (multifilesrc->successful_read) {
      /* If we've read at least one buffer successfully, not finding the
       * next file is EOS. */
      g_free (filename);
      if (error != NULL)
        g_error_free (error);
      return GST_FLOW_UNEXPECTED;
    } else {
      goto handle_error;
    }
  }

  multifilesrc->successful_read = TRUE;
  multifilesrc->index++;

  buf = gst_buffer_new ();
  GST_BUFFER_DATA (buf) = (unsigned char *) data;
  GST_BUFFER_MALLOCDATA (buf) = GST_BUFFER_DATA (buf);
  GST_BUFFER_SIZE (buf) = size;
  GST_BUFFER_OFFSET (buf) = multifilesrc->offset;
  GST_BUFFER_OFFSET_END (buf) = multifilesrc->offset + size;
  multifilesrc->offset += size;
  gst_buffer_set_caps (buf, multifilesrc->caps);

  GST_DEBUG_OBJECT (multifilesrc, "read file \"%s\".", filename);

  g_free (filename);
  *buffer = buf;
  return GST_FLOW_OK;

handle_error:
  {
    if (error != NULL) {
      GST_ELEMENT_ERROR (multifilesrc, RESOURCE, READ,
          ("Error while reading from file \"%s\".", filename),
          ("%s", error->message));
      g_error_free (error);
    } else {
      GST_ELEMENT_ERROR (multifilesrc, RESOURCE, READ,
          ("Error while reading from file \"%s\".", filename),
          ("%s", g_strerror (errno)));
    }
    g_free (filename);
    return GST_FLOW_ERROR;
  }
}

コード例 #2

ファイル: gstmultifilesrc.c プロジェクト: lubing521/gst-embedded-builder

static GstFlowReturn
gst_multi_file_src_create (GstPushSrc * src, GstBuffer ** buffer)
{
  GstMultiFileSrc *multifilesrc;
  gsize size;
  gchar *data;
  gchar *filename;
  GstBuffer *buf;
  gboolean ret;
  GError *error = NULL;

  multifilesrc = GST_MULTI_FILE_SRC (src);

  if (multifilesrc->index < multifilesrc->start_index) {
    multifilesrc->index = multifilesrc->start_index;
  }
  filename = gst_multi_file_src_get_filename (multifilesrc);

  GST_DEBUG_OBJECT (multifilesrc, "reading from file \"%s\".", filename);

  ret = g_file_get_contents (filename, &data, &size, &error);
  if (!ret) {
    if (multifilesrc->successful_read) {
      /* If we've read at least one buffer successfully, not finding the
       * next file is EOS. */
      g_free (filename);
      if (error != NULL)
        g_error_free (error);

      if (multifilesrc->loop) {
        error = NULL;
        multifilesrc->index = multifilesrc->start_index;

        filename = gst_multi_file_src_get_filename (multifilesrc);
        ret = g_file_get_contents (filename, &data, &size, &error);
        if (!ret) {
          g_free (filename);
          if (error != NULL)
            g_error_free (error);

          return GST_FLOW_EOS;
        }
      } else {
        return GST_FLOW_EOS;
      }
    } else {
      goto handle_error;
    }
  }

  multifilesrc->successful_read = TRUE;
  multifilesrc->index++;
  if (multifilesrc->stop_index != -1 &&
      multifilesrc->index >= multifilesrc->stop_index) {
    multifilesrc->index = multifilesrc->start_index;
  }

  buf = gst_buffer_new ();
  gst_buffer_append_memory (buf,
      gst_memory_new_wrapped (0, data, size, 0, size, data, g_free));
  GST_BUFFER_OFFSET (buf) = multifilesrc->offset;
  GST_BUFFER_OFFSET_END (buf) = multifilesrc->offset + size;
  multifilesrc->offset += size;

  GST_DEBUG_OBJECT (multifilesrc, "read file \"%s\".", filename);

  g_free (filename);
  *buffer = buf;
  return GST_FLOW_OK;

handle_error:
  {
    if (error != NULL) {
      GST_ELEMENT_ERROR (multifilesrc, RESOURCE, READ,
          ("Error while reading from file \"%s\".", filename),
          ("%s", error->message));
      g_error_free (error);
    } else {
      GST_ELEMENT_ERROR (multifilesrc, RESOURCE, READ,
          ("Error while reading from file \"%s\".", filename),
          ("%s", g_strerror (errno)));
    }
    g_free (filename);
    return GST_FLOW_ERROR;
  }
}