src/Tizen.MachineLearning.Inference/Interop/Interop.Nnstreamer.cs

   1 /*
   2 * Copyright (c) 2019 Samsung Electronics Co., Ltd. All Rights Reserved.
   3 *
   4 * Licensed under the Apache License, Version 2.0 (the License);
   5 * you may not use this file except in compliance with the License.
   6 * You may obtain a copy of the License at
   7 *
   8 * http://www.apache.org/licenses/LICENSE-2.0
   9 *
  10 * Unless required by applicable law or agreed to in writing, software
  11 * distributed under the License is distributed on an AS IS BASIS,
  12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 * See the License for the specific language governing permissions and
  14 * limitations under the License.
  15 */
  16
  17 using System;
  18 using System.Runtime.InteropServices;
  19 using Tizen.MachineLearning.Inference;
  20
  21 internal static partial class Interop
  22 {
  23     internal static partial class Libraries
  24     {
  25         public const string Nnstreamer = "libcapi-nnstreamer.so.0";
  26     }
  27
  28     internal static partial class Pipeline
  29     {
  30         /* typedef void (*ml_pipeline_state_cb) (ml_pipeline_state_e state, void *user_data); */
  31         [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
  32         internal delegate void StateChangedCallback(PipelineState state, IntPtr user_data);
  33
  34         /* typedef void (*ml_pipeline_sink_cb) (const ml_tensors_data_h data, const ml_tensors_info_h info, void *user_data); */
  35         [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
  36         internal delegate void NewDataCallback(IntPtr data, IntPtr info, IntPtr user_data);
  37
  38         /* typedef int (*ml_custom_easy_invoke_cb) (const ml_tensors_data_h in, ml_tensors_data_h out, void *user_data); */
  39         [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
  40         internal delegate void CustomEasyInvokeCallback(IntPtr in_data, IntPtr out_data, IntPtr user_data);
  41
  42         /* int ml_pipeline_construct (const char *pipeline_description, ml_pipeline_state_cb cb, void *user_data, ml_pipeline_h *pipe); */
  43         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_construct", CallingConvention = CallingConvention.Cdecl)]
  44         internal static extern NNStreamerError Construct(string pipeline_description, StateChangedCallback callback, IntPtr user_data, out IntPtr pipeline_handle);
  45
  46         /* int ml_pipeline_destroy (ml_pipeline_h pipe); */
  47         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_destroy", CallingConvention = CallingConvention.Cdecl)]
  48         internal static extern NNStreamerError Destroy(IntPtr pipeline_handle);
  49
  50         /* int ml_pipeline_get_state (ml_pipeline_h pipe, ml_pipeline_state_e *state) */
  51         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_get_state", CallingConvention = CallingConvention.Cdecl)]
  52         internal static extern NNStreamerError GetState(IntPtr pipeline_handle, out int state);
  53
  54         /* int ml_pipeline_start (ml_pipeline_h pipe); */
  55         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_start", CallingConvention = CallingConvention.Cdecl)]
  56         internal static extern NNStreamerError Start(IntPtr pipeline_handle);
  57
  58         /* int ml_pipeline_stop (ml_pipeline_h pipe); */
  59         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_stop", CallingConvention = CallingConvention.Cdecl)]
  60         internal static extern NNStreamerError Stop(IntPtr pipeline_handle);
  61
  62         /* int ml_pipeline_sink_register (ml_pipeline_h pipe, const char *sink_name, ml_pipeline_sink_cb cb, void *user_data, ml_pipeline_sink_h *sink_handle); */
  63         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_sink_register", CallingConvention = CallingConvention.Cdecl)]
  64         internal static extern NNStreamerError RegisterSinkCallback(IntPtr pipeline_handle, string sink_name, NewDataCallback callback, IntPtr user_data, out IntPtr sink_handle);
  65
  66         /* int ml_pipeline_sink_unregister (ml_pipeline_sink_h sink_handle); */
  67         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_sink_unregister", CallingConvention = CallingConvention.Cdecl)]
  68         internal static extern NNStreamerError UnregisterSinkCallback(IntPtr sink_handle);
  69
  70         /* int ml_pipeline_src_get_handle (ml_pipeline_h pipe, const char *src_name, ml_pipeline_src_h *src_handle); */
  71         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_src_get_handle", CallingConvention = CallingConvention.Cdecl)]
  72         internal static extern NNStreamerError GetSrcHandle(IntPtr pipeline_handle, string src_name, out IntPtr src_handle);
  73
  74         /* int ml_pipeline_src_release_handle (ml_pipeline_src_h src_handle); */
  75         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_src_release_handle", CallingConvention = CallingConvention.Cdecl)]
  76         internal static extern NNStreamerError ReleaseSrcHandle(IntPtr src_handle);
  77
  78         /* int ml_pipeline_src_input_data (ml_pipeline_src_h src_handle, ml_tensors_data_h data, ml_pipeline_buf_policy_e policy); */
  79         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_src_input_data", CallingConvention = CallingConvention.Cdecl)]
  80         internal static extern NNStreamerError InputSrcData(IntPtr src_handle, IntPtr data_handle, PipelineBufferPolicy policy);
  81
  82         /* int ml_pipeline_valve_get_handle (ml_pipeline_h pipe, const char *valve_name, ml_pipeline_valve_h *valve_handle); */
  83         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_valve_get_handle", CallingConvention = CallingConvention.Cdecl)]
  84         internal static extern NNStreamerError GetValveHandle(IntPtr pipeline_handle, string valve_name, out IntPtr valve_handle);
  85
  86         /* int ml_pipeline_valve_release_handle (ml_pipeline_valve_h valve_handle); */
  87         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_valve_release_handle", CallingConvention = CallingConvention.Cdecl)]
  88         internal static extern NNStreamerError ReleaseValveHandle(IntPtr valve_handle);
  89
  90         /* int ml_pipeline_valve_set_open (ml_pipeline_valve_h valve_handle, bool open); */
  91         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_valve_set_open", CallingConvention = CallingConvention.Cdecl)]
  92         internal static extern NNStreamerError OpenValve(IntPtr valve_handle, bool open);
  93
  94         /* int ml_pipeline_switch_get_handle (ml_pipeline_h pipe, const char *switch_name, ml_pipeline_switch_e *switch_type, ml_pipeline_switch_h *switch_handle); */
  95         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_switch_get_handle", CallingConvention = CallingConvention.Cdecl)]
  96         internal static extern NNStreamerError GetSwitchHandle(IntPtr pipeline_handle, string switch_name, out SwitchType switch_type, out IntPtr switch_handle);
  97
  98         /* int ml_pipeline_switch_release_handle (ml_pipeline_switch_h switch_handle); */
  99         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_switch_release_handle", CallingConvention = CallingConvention.Cdecl)]
 100         internal static extern NNStreamerError ReleaseSwitchHandle(IntPtr switch_handle);
 101
 102         /* int ml_pipeline_switch_select (ml_pipeline_switch_h switch_handle, const char *pad_name); */
 103         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_switch_select", CallingConvention = CallingConvention.Cdecl)]
 104         internal static extern NNStreamerError SelectSwitchPad(IntPtr switch_handle, string pad_name);
 105
 106         /* int ml_pipeline_custom_easy_filter_register (const char *name, const ml_tensors_info_h in, const ml_tensors_info_h out, ml_custom_easy_invoke_cb cb, void *user_data, ml_custom_easy_filter_h *custom); */
 107         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_custom_easy_filter_register", CallingConvention = CallingConvention.Cdecl)]
 108         internal static extern NNStreamerError RegisterCustomFilter(string name, IntPtr input_info, IntPtr output_info, CustomEasyInvokeCallback callback, IntPtr user_data, out IntPtr custom_handle);
 109
 110         /* int ml_pipeline_custom_easy_filter_unregister (ml_custom_easy_filter_h custom); */
 111         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_custom_easy_filter_unregister", CallingConvention = CallingConvention.Cdecl)]
 112         internal static extern NNStreamerError UnregisterCustomFilter(IntPtr custom_handle);
 113
 114         /* int ml_pipeline_element_get_handle (ml_pipeline_h pipe, const char *element_name, ml_pipeline_element_h *elem_h); */
 115         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_handle", CallingConvention = CallingConvention.Cdecl)]
 116         internal static extern NNStreamerError GetElementHandle(IntPtr pipeline_handle, string element_name, out IntPtr element_handle);
 117
 118         /* int ml_pipeline_element_release_handle (ml_pipeline_element_h elem_h); */
 119         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_release_handle", CallingConvention = CallingConvention.Cdecl)]
 120         internal static extern NNStreamerError ReleaseElementHandle(IntPtr element_handle);
 121
 122         /* int ml_pipeline_element_set_property_bool (ml_pipeline_element_h elem_h, const char *property_name, const int32_t value); */
 123         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_set_property_bool", CallingConvention = CallingConvention.Cdecl)]
 124         internal static extern NNStreamerError SetPropertyBool(IntPtr element_handle, string property_name, int value);
 125
 126         /* int ml_pipeline_element_set_property_string (ml_pipeline_element_h elem_h, const char *property_name, const char *value); */
 127         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_set_property_string", CallingConvention = CallingConvention.Cdecl)]
 128         internal static extern NNStreamerError SetPropertyString(IntPtr element_handle, string property_name, string value);
 129
 130         /* int ml_pipeline_element_set_property_int32 (ml_pipeline_element_h elem_h, const char *property_name, const int32_t value); */
 131         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_set_property_int32", CallingConvention = CallingConvention.Cdecl)]
 132         internal static extern NNStreamerError SetPropertyInt32(IntPtr element_handle, string property_name, int value);
 133
 134         /* int ml_pipeline_element_set_property_int64 (ml_pipeline_element_h elem_h, const char *property_name, const int64_t value); */
 135         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_set_property_int64", CallingConvention = CallingConvention.Cdecl)]
 136         internal static extern NNStreamerError SetPropertyInt64(IntPtr element_handle, string property_name, long value);
 137
 138         /* int ml_pipeline_element_set_property_uint32 (ml_pipeline_element_h elem_h, const char *property_name, const uint32_t value); */
 139         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_set_property_uint32", CallingConvention = CallingConvention.Cdecl)]
 140         internal static extern NNStreamerError SetPropertyUInt32(IntPtr element_handle, string property_name, uint value);
 141
 142         /* int ml_pipeline_element_set_property_uint64 (ml_pipeline_element_h elem_h, const char *property_name, const uint64_t value); */
 143         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_set_property_uint64", CallingConvention = CallingConvention.Cdecl)]
 144         internal static extern NNStreamerError SetPropertyUInt64(IntPtr element_handle, string property_name, ulong value);
 145
 146         /* int ml_pipeline_element_set_property_double (ml_pipeline_element_h elem_h, const char *property_name, const double value); */
 147         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_set_property_double", CallingConvention = CallingConvention.Cdecl)]
 148         internal static extern NNStreamerError SetPropertyDouble(IntPtr element_handle, string property_name, double value);
 149
 150         /* int ml_pipeline_element_set_property_enum (ml_pipeline_element_h elem_h, const char *property_name, const uint32_t value); */
 151         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_set_property_enum", CallingConvention = CallingConvention.Cdecl)]
 152         internal static extern NNStreamerError SetPropertyEnum(IntPtr element_handle, string property_name, uint value);
 153
 154         /* int ml_pipeline_element_get_property_bool (ml_pipeline_element_h elem_h, const char *property_name, int32_t *value); */
 155         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_property_bool", CallingConvention = CallingConvention.Cdecl)]
 156         internal static extern NNStreamerError GetPropertyBool(IntPtr element_handle, string property_name, out int value);
 157
 158         /* int ml_pipeline_element_get_property_string (ml_pipeline_element_h elem_h, const char *property_name, char **value); */
 159         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_property_string", CallingConvention = CallingConvention.Cdecl)]
 160         internal static extern NNStreamerError GetPropertyString(IntPtr element_handle, string property_name, out string value);
 161
 162         /* int ml_pipeline_element_get_property_int32 (ml_pipeline_element_h elem_h, const char *property_name, int32_t *value); */
 163         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_property_int32", CallingConvention = CallingConvention.Cdecl)]
 164         internal static extern NNStreamerError GetPropertyInt32(IntPtr element_handle, string property_name, out int value);
 165
 166         /* int ml_pipeline_element_get_property_int64 (ml_pipeline_element_h elem_h, const char *property_name, int64_t *value); */
 167         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_property_int64", CallingConvention = CallingConvention.Cdecl)]
 168         internal static extern NNStreamerError GetPropertyInt64(IntPtr element_handle, string property_name, out long value);
 169
 170         /* int ml_pipeline_element_get_property_uint32 (ml_pipeline_element_h elem_h, const char *property_name, uint32_t *value); */
 171         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_property_uint32", CallingConvention = CallingConvention.Cdecl)]
 172         internal static extern NNStreamerError GetPropertyUInt32(IntPtr element_handle, string property_name, out uint value);
 173
 174         /* int ml_pipeline_element_get_property_uint64 (ml_pipeline_element_h elem_h, const char *property_name, uint64_t *value); */
 175         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_property_uint64", CallingConvention = CallingConvention.Cdecl)]
 176         internal static extern NNStreamerError GetPropertyUInt64(IntPtr element_handle, string property_name, out ulong value);
 177
 178         /* int ml_pipeline_element_get_property_double (ml_pipeline_element_h elem_h, const char *property_name, double *value); */
 179         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_property_double", CallingConvention = CallingConvention.Cdecl)]
 180         internal static extern NNStreamerError GetPropertyDouble(IntPtr element_handle, string property_name, out double value);
 181
 182         /* int ml_pipeline_element_get_property_enum (ml_pipeline_element_h elem_h, const char *property_name, uint32_t *value); */
 183         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_property_enum", CallingConvention = CallingConvention.Cdecl)]
 184         internal static extern NNStreamerError GetPropertyEnum(IntPtr element_handle, string property_name, out uint value);
 185     }
 186
 187     internal static partial class SingleShot
 188     {
 189         /* int ml_single_open (ml_single_h *single, const char *model, const ml_tensors_info_h input_info, const ml_tensors_info_h output_info, ml_nnfw_type_e nnfw, ml_nnfw_hw_e hw) */
 190         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_single_open", CallingConvention = CallingConvention.Cdecl)]
 191         internal static extern NNStreamerError OpenSingle(out IntPtr single_handle, string model_path, IntPtr input_info, IntPtr output_info, NNFWType nn_type, HWType hw_type);
 192
 193         /* int ml_single_close (ml_single_h single) */
 194         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_single_close", CallingConvention = CallingConvention.Cdecl)]
 195         internal static extern NNStreamerError CloseSingle(IntPtr single_handle);
 196
 197         /* int ml_single_invoke (ml_single_h single, const ml_tensors_data_h input, ml_tensors_data_h *output) */
 198         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_single_invoke", CallingConvention = CallingConvention.Cdecl)]
 199         internal static extern NNStreamerError InvokeSingle(IntPtr single_handle, IntPtr input_data, out IntPtr output_data);
 200
 201         /* int ml_single_invoke_dynamic (ml_single_h single, const ml_tensors_data_h input, const ml_tensors_info_h in_info, ml_tensors_data_h * output, ml_tensors_info_h * out_info) */
 202         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_single_invoke_dynamic", CallingConvention = CallingConvention.Cdecl)]
 203         internal static extern NNStreamerError InvokeSingleDynamic(IntPtr single_handle, IntPtr input_data, IntPtr input_info, out IntPtr output_data, out IntPtr output_info);
 204
 205         /* int ml_single_get_input_info (ml_single_h single, ml_tensors_info_h *info) */
 206         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_single_get_input_info", CallingConvention = CallingConvention.Cdecl)]
 207         internal static extern NNStreamerError GetInputTensorsInfo(IntPtr single_handle, out IntPtr input_info);
 208
 209         /* int ml_single_get_output_info (ml_single_h single, ml_tensors_info_h *info) */
 210         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_single_get_output_info", CallingConvention = CallingConvention.Cdecl)]
 211         internal static extern NNStreamerError GetOutputTensorsInfo(IntPtr single_handle, out IntPtr output_info);
 212
 213         /* int ml_single_set_input_info (ml_single_h single, const ml_tensors_info_h info) */
 214         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_single_set_input_info", CallingConvention = CallingConvention.Cdecl)]
 215         internal static extern NNStreamerError SetInputInfo(IntPtr single_handle, IntPtr in_handle);
 216
 217         /* int ml_single_set_timeout (ml_single_h single, unsigned int timeout)*/
 218         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_single_set_timeout", CallingConvention = CallingConvention.Cdecl)]
 219         internal static extern NNStreamerError SetTimeout(IntPtr single_handle, int time_ms);
 220
 221         /* int ml_single_set_property (ml_single_h single, const char *name, const char *value) */
 222         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_single_set_property", CallingConvention = CallingConvention.Cdecl)]
 223         internal static extern NNStreamerError SetValue(IntPtr single_handle, string name, string value);
 224
 225         /* int ml_single_get_property (ml_single_h single, const char *name, char **value) */
 226         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_single_get_property", CallingConvention = CallingConvention.Cdecl)]
 227         internal static extern NNStreamerError GetValue(IntPtr single_handle, string name, out IntPtr value);
 228     }
 229
 230     internal static partial class Util
 231     {
 232         /* int ml_tensors_info_create (ml_tensors_info_h *info) */
 233         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_tensors_info_create", CallingConvention = CallingConvention.Cdecl)]
 234         internal static extern NNStreamerError CreateTensorsInfo(out IntPtr info);
 235
 236         /* int ml_tensors_info_destroy (ml_tensors_info_h info) */
 237         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_tensors_info_destroy", CallingConvention = CallingConvention.Cdecl)]
 238         internal static extern NNStreamerError DestroyTensorsInfo(IntPtr info);
 239
 240         /* int ml_tensors_info_set_count (ml_tensors_info_h info, unsigned int count) */
 241         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_tensors_info_set_count", CallingConvention = CallingConvention.Cdecl)]
 242         internal static extern NNStreamerError SetTensorsCount(IntPtr info, int count);
 243
 244         /* int ml_tensors_info_get_count (ml_tensors_info_h info, unsigned int *count) */
 245         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_tensors_info_get_count", CallingConvention = CallingConvention.Cdecl)]
 246         internal static extern NNStreamerError GetTensorsCount(IntPtr info, out int count);
 247
 248         /* int ml_tensors_info_set_tensor_name (ml_tensors_info_h info, unsigned int index, const char *name) */
 249         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_tensors_info_set_tensor_name", CallingConvention = CallingConvention.Cdecl)]
 250         internal static extern NNStreamerError SetTensorName(IntPtr info, int index, string name);
 251
 252         /* int ml_tensors_info_get_tensor_name (ml_tensors_info_h info, unsigned int index, char **name) */
 253         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_tensors_info_get_tensor_name", CallingConvention = CallingConvention.Cdecl)]
 254         internal static extern NNStreamerError GetTensorName(IntPtr info, int index, out string name);
 255
 256         /* int ml_tensors_info_set_tensor_type (ml_tensors_info_h info, unsigned int index, const ml_tensor_type_e type) */
 257         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_tensors_info_set_tensor_type", CallingConvention = CallingConvention.Cdecl)]
 258         internal static extern NNStreamerError SetTensorType(IntPtr info, int index, TensorType type);
 259
 260         /* int ml_tensors_info_get_tensor_type (ml_tensors_info_h info, unsigned int index, ml_tensor_type_e *type) */
 261         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_tensors_info_get_tensor_type", CallingConvention = CallingConvention.Cdecl)]
 262         internal static extern NNStreamerError GetTensorType(IntPtr info, int index, out TensorType type);
 263
 264         /* int ml_tensors_info_set_tensor_dimension (ml_tensors_info_h info, unsigned int index, const ml_tensor_dimension dimension) */
 265         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_tensors_info_set_tensor_dimension", CallingConvention = CallingConvention.Cdecl)]
 266         internal static extern NNStreamerError SetTensorDimension(IntPtr info, int index, int[] dimension);
 267
 268         /* int ml_tensors_info_get_tensor_dimension (ml_tensors_info_h info, unsigned int index, ml_tensor_dimension dimension) */
 269         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_tensors_info_get_tensor_dimension", CallingConvention = CallingConvention.Cdecl)]
 270         internal static extern NNStreamerError GetTensorDimension(IntPtr info, int index, [In, Out] uint[] dimension);
 271
 272         /* int ml_tensors_data_create (const ml_tensors_info_h info, ml_tensors_data_h *data) */
 273         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_tensors_data_create", CallingConvention = CallingConvention.Cdecl)]
 274         internal static extern NNStreamerError CreateTensorsData(IntPtr info, out IntPtr data);
 275
 276         /* int ml_tensors_data_destroy (ml_tensors_data_h data) */
 277         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_tensors_data_destroy", CallingConvention = CallingConvention.Cdecl)]
 278         internal static extern NNStreamerError DestroyTensorsData(IntPtr data);
 279
 280         /* int ml_tensors_data_get_tensor_data (ml_tensors_data_h data, unsigned int index, void **raw_data, size_t *data_size) */
 281         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_tensors_data_get_tensor_data", CallingConvention = CallingConvention.Cdecl)]
 282         internal static extern NNStreamerError GetTensorData(IntPtr data, int index, out IntPtr raw_data, out int data_size);
 283
 284         /* int ml_tensors_data_set_tensor_data (ml_tensors_data_h data, unsigned int index, const void *raw_data, const size_t data_size) */
 285         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_tensors_data_set_tensor_data", CallingConvention = CallingConvention.Cdecl)]
 286         internal static extern NNStreamerError SetTensorData(IntPtr data, int index, byte[] raw_data, int data_size);
 287
 288         /* int ml_check_nnfw_availability (ml_nnfw_type_e nnfw, ml_nnfw_hw_e hw, bool *available); */
 289         [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_check_nnfw_availability", CallingConvention = CallingConvention.Cdecl)]
 290         internal static extern NNStreamerError CheckNNFWAvailability(NNFWType nnfw, HWType hw, out bool available);
 291
 292         internal static byte[] IntPtrToByteArray(IntPtr unmanagedByteArray, int size)
 293         {
 294             byte[] retByte = new byte[size];
 295             Marshal.Copy(unmanagedByteArray, retByte, 0, size);
 296             return retByte;
 297         }
 298
 299         internal static string IntPtrToString(IntPtr val)
 300         {
 301             return (val != IntPtr.Zero) ? Marshal.PtrToStringAnsi(val) : string.Empty;
 302         }
 303     }
 304 }