inference-engine/thirdparty/clDNN/kernel_selector/core/cl_kernels/reverse_sequence_ref.cl

   1 // Copyright (c) 2019 Intel Corporation
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //      http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15
  16 #include "include/include_all.cl"
  17
  18 KERNEL(reverse_sequence_ref)(const __global UNIT_TYPE* input, const __global float* seq_lengths, __global UNIT_TYPE* output)
  19 {
  20     const uint batch = get_global_id(0);
  21     const uint feature = get_global_id(1);
  22     const uint y = get_global_id(2) / INPUT0_SIZE_X;
  23     const uint x = get_global_id(2) % INPUT0_SIZE_X;
  24     uint dimensions[] = { batch, feature, y, x };
  25
  26     const uint input_index = INPUT0_OFFSET +
  27                              batch * INPUT0_BATCH_PITCH +
  28                              feature * INPUT0_FEATURE_PITCH +
  29                              y * INPUT0_Y_PITCH +
  30                              x * INPUT0_X_PITCH;
  31
  32     const uint length = seq_lengths[dimensions[BATCH_AXIS]];
  33     if (dimensions[SEQ_AXIS] < length)
  34         dimensions[SEQ_AXIS] = length - dimensions[SEQ_AXIS] - 1;
  35
  36     const uint output_index = OUTPUT_OFFSET +
  37                               dimensions[0] * OUTPUT_BATCH_PITCH +
  38                               dimensions[1] * OUTPUT_FEATURE_PITCH +
  39                               dimensions[2] * OUTPUT_Y_PITCH +
  40                               dimensions[3] * OUTPUT_X_PITCH;
  41
  42     output[output_index] = input[input_index];
  43 }