Function CheckValidPadding

tensorflow/core/util/padding.cc:40–71

}

Status CheckValidPadding(Padding padding_type,
                         const std::vector<int64>& explicit_paddings,
                         int num_dims, TensorFormat data_format) {
  if (padding_type == Padding::EXPLICIT) {
    if (explicit_paddings.size() != 2 * num_dims) {
      return errors::InvalidArgument(
          "explicit_paddings attribute must contain ", 2 * num_dims,
          " values, but got: ", explicit_paddings.size());
    }
    for (int64 padding_value : explicit_paddings) {
      if (padding_value < 0) {
        return errors::InvalidArgument(
            "All elements of explicit_paddings must be nonnegative");
      }
    }
    const int32 batch_index = GetTensorBatchDimIndex(num_dims, data_format);
    const int32 depth_index = GetTensorFeatureDimIndex(num_dims, data_format);
    if (explicit_paddings[2 * batch_index] != 0 ||
        explicit_paddings[2 * batch_index + 1] != 0 ||
        explicit_paddings[2 * depth_index] != 0 ||
        explicit_paddings[2 * depth_index + 1] != 0) {
      return errors::InvalidArgument(
          "Nonzero explicit padding in the batch or depth dimensions is not "
          "supported");
    }
  } else if (!explicit_paddings.empty()) {
    return errors::InvalidArgument(
        "explicit_paddings attribute must be empty if the padding attribute is "
        "not EXPLICIT");
  }
  return Status::OK();
}

string GetPaddingAttrString() { return "padding: {'SAME', 'VALID'}"; }