com.intel.analytics.bigdl.nn.ops.Substr.scala Maven / Gradle / Ivy
/*
* Copyright 2016 The BigDL Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intel.analytics.bigdl.nn.ops
import com.google.protobuf.ByteString
import com.intel.analytics.bigdl.nn.abstractnn.Activity
import com.intel.analytics.bigdl.tensor.TensorNumericMath.TensorNumeric
import com.intel.analytics.bigdl.tensor._
import com.intel.analytics.bigdl.utils.Table
import scala.reflect.ClassTag
class Substr[T: ClassTag]()
(implicit ev: TensorNumeric[T]) extends Operation[Table, Tensor[ByteString], T] {
override def updateOutput(input: Table): Tensor[ByteString] = {
val data = input[Tensor[ByteString]](1).value()
val pos = input[Tensor[Int]](2).value()
val len = input[Tensor[Int]](3).value()
import com.intel.analytics.bigdl.utils.tf.TFTensorNumeric.NumericByteString
output = Tensor.scalar(data.substring(pos, pos + len))
output
}
}
object Substr {
def apply[T: ClassTag]()
(implicit ev: TensorNumeric[T]):
Operation[Activity, Activity, T]
= new Substr[T]().asInstanceOf[Operation[Activity, Activity, T]]
}