2 * Copyright (c) 2019 Samsung Electronics Co., Ltd. All Rights Reserved.
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
18 using System.Runtime.InteropServices;
19 using Tizen.MachineLearning.Inference;
21 internal static partial class Interop
23 internal static partial class Libraries
25 public const string Nnstreamer = "libcapi-nnstreamer.so.1";
26 public const string MlCommon = "libcapi-ml-common.so.1";
27 public const string MlSingle = "libcapi-ml-inference-single.so.1";
30 internal static partial class Pipeline
32 /* typedef void (*ml_pipeline_state_cb) (ml_pipeline_state_e state, void *user_data); */
33 [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
34 internal delegate void StateChangedCallback(PipelineState state, IntPtr user_data);
36 /* typedef void (*ml_pipeline_sink_cb) (const ml_tensors_data_h data, const ml_tensors_info_h info, void *user_data); */
37 [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
38 internal delegate void NewDataCallback(IntPtr data, IntPtr info, IntPtr user_data);
40 /* typedef int (*ml_custom_easy_invoke_cb) (const ml_tensors_data_h in, ml_tensors_data_h out, void *user_data); */
41 [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
42 internal delegate void CustomEasyInvokeCallback(IntPtr in_data, IntPtr out_data, IntPtr user_data);
44 /* int ml_pipeline_construct (const char *pipeline_description, ml_pipeline_state_cb cb, void *user_data, ml_pipeline_h *pipe); */
45 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_construct", CallingConvention = CallingConvention.Cdecl)]
46 internal static extern NNStreamerError Construct(string pipeline_description, StateChangedCallback callback, IntPtr user_data, out IntPtr pipeline_handle);
48 /* int ml_pipeline_destroy (ml_pipeline_h pipe); */
49 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_destroy", CallingConvention = CallingConvention.Cdecl)]
50 internal static extern NNStreamerError Destroy(IntPtr pipeline_handle);
52 /* int ml_pipeline_get_state (ml_pipeline_h pipe, ml_pipeline_state_e *state) */
53 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_get_state", CallingConvention = CallingConvention.Cdecl)]
54 internal static extern NNStreamerError GetState(IntPtr pipeline_handle, out int state);
56 /* int ml_pipeline_start (ml_pipeline_h pipe); */
57 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_start", CallingConvention = CallingConvention.Cdecl)]
58 internal static extern NNStreamerError Start(IntPtr pipeline_handle);
60 /* int ml_pipeline_stop (ml_pipeline_h pipe); */
61 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_stop", CallingConvention = CallingConvention.Cdecl)]
62 internal static extern NNStreamerError Stop(IntPtr pipeline_handle);
64 /* 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); */
65 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_sink_register", CallingConvention = CallingConvention.Cdecl)]
66 internal static extern NNStreamerError RegisterSinkCallback(IntPtr pipeline_handle, string sink_name, NewDataCallback callback, IntPtr user_data, out IntPtr sink_handle);
68 /* int ml_pipeline_sink_unregister (ml_pipeline_sink_h sink_handle); */
69 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_sink_unregister", CallingConvention = CallingConvention.Cdecl)]
70 internal static extern NNStreamerError UnregisterSinkCallback(IntPtr sink_handle);
72 /* int ml_pipeline_src_get_handle (ml_pipeline_h pipe, const char *src_name, ml_pipeline_src_h *src_handle); */
73 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_src_get_handle", CallingConvention = CallingConvention.Cdecl)]
74 internal static extern NNStreamerError GetSrcHandle(IntPtr pipeline_handle, string src_name, out IntPtr src_handle);
76 /* int ml_pipeline_src_release_handle (ml_pipeline_src_h src_handle); */
77 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_src_release_handle", CallingConvention = CallingConvention.Cdecl)]
78 internal static extern NNStreamerError ReleaseSrcHandle(IntPtr src_handle);
80 /* int ml_pipeline_src_input_data (ml_pipeline_src_h src_handle, ml_tensors_data_h data, ml_pipeline_buf_policy_e policy); */
81 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_src_input_data", CallingConvention = CallingConvention.Cdecl)]
82 internal static extern NNStreamerError InputSrcData(IntPtr src_handle, IntPtr data_handle, PipelineBufferPolicy policy);
84 /* int ml_pipeline_valve_get_handle (ml_pipeline_h pipe, const char *valve_name, ml_pipeline_valve_h *valve_handle); */
85 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_valve_get_handle", CallingConvention = CallingConvention.Cdecl)]
86 internal static extern NNStreamerError GetValveHandle(IntPtr pipeline_handle, string valve_name, out IntPtr valve_handle);
88 /* int ml_pipeline_valve_release_handle (ml_pipeline_valve_h valve_handle); */
89 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_valve_release_handle", CallingConvention = CallingConvention.Cdecl)]
90 internal static extern NNStreamerError ReleaseValveHandle(IntPtr valve_handle);
92 /* int ml_pipeline_valve_set_open (ml_pipeline_valve_h valve_handle, bool open); */
93 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_valve_set_open", CallingConvention = CallingConvention.Cdecl)]
94 internal static extern NNStreamerError OpenValve(IntPtr valve_handle, bool open);
96 /* 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); */
97 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_switch_get_handle", CallingConvention = CallingConvention.Cdecl)]
98 internal static extern NNStreamerError GetSwitchHandle(IntPtr pipeline_handle, string switch_name, out SwitchType switch_type, out IntPtr switch_handle);
100 /* int ml_pipeline_switch_release_handle (ml_pipeline_switch_h switch_handle); */
101 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_switch_release_handle", CallingConvention = CallingConvention.Cdecl)]
102 internal static extern NNStreamerError ReleaseSwitchHandle(IntPtr switch_handle);
104 /* int ml_pipeline_switch_select (ml_pipeline_switch_h switch_handle, const char *pad_name); */
105 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_switch_select", CallingConvention = CallingConvention.Cdecl)]
106 internal static extern NNStreamerError SelectSwitchPad(IntPtr switch_handle, string pad_name);
108 /* 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); */
109 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_custom_easy_filter_register", CallingConvention = CallingConvention.Cdecl)]
110 internal static extern NNStreamerError RegisterCustomFilter(string name, IntPtr input_info, IntPtr output_info, CustomEasyInvokeCallback callback, IntPtr user_data, out IntPtr custom_handle);
112 /* int ml_pipeline_custom_easy_filter_unregister (ml_custom_easy_filter_h custom); */
113 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_custom_easy_filter_unregister", CallingConvention = CallingConvention.Cdecl)]
114 internal static extern NNStreamerError UnregisterCustomFilter(IntPtr custom_handle);
116 /* int ml_pipeline_element_get_handle (ml_pipeline_h pipe, const char *element_name, ml_pipeline_element_h *elem_h); */
117 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_handle", CallingConvention = CallingConvention.Cdecl)]
118 internal static extern NNStreamerError GetElementHandle(IntPtr pipeline_handle, string element_name, out IntPtr element_handle);
120 /* int ml_pipeline_element_release_handle (ml_pipeline_element_h elem_h); */
121 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_release_handle", CallingConvention = CallingConvention.Cdecl)]
122 internal static extern NNStreamerError ReleaseElementHandle(IntPtr element_handle);
124 /* int ml_pipeline_element_set_property_bool (ml_pipeline_element_h elem_h, const char *property_name, const int32_t value); */
125 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_set_property_bool", CallingConvention = CallingConvention.Cdecl)]
126 internal static extern NNStreamerError SetPropertyBool(IntPtr element_handle, string property_name, int value);
128 /* int ml_pipeline_element_set_property_string (ml_pipeline_element_h elem_h, const char *property_name, const char *value); */
129 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_set_property_string", CallingConvention = CallingConvention.Cdecl)]
130 internal static extern NNStreamerError SetPropertyString(IntPtr element_handle, string property_name, string value);
132 /* int ml_pipeline_element_set_property_int32 (ml_pipeline_element_h elem_h, const char *property_name, const int32_t value); */
133 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_set_property_int32", CallingConvention = CallingConvention.Cdecl)]
134 internal static extern NNStreamerError SetPropertyInt32(IntPtr element_handle, string property_name, int value);
136 /* int ml_pipeline_element_set_property_int64 (ml_pipeline_element_h elem_h, const char *property_name, const int64_t value); */
137 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_set_property_int64", CallingConvention = CallingConvention.Cdecl)]
138 internal static extern NNStreamerError SetPropertyInt64(IntPtr element_handle, string property_name, long value);
140 /* int ml_pipeline_element_set_property_uint32 (ml_pipeline_element_h elem_h, const char *property_name, const uint32_t value); */
141 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_set_property_uint32", CallingConvention = CallingConvention.Cdecl)]
142 internal static extern NNStreamerError SetPropertyUInt32(IntPtr element_handle, string property_name, uint value);
144 /* int ml_pipeline_element_set_property_uint64 (ml_pipeline_element_h elem_h, const char *property_name, const uint64_t value); */
145 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_set_property_uint64", CallingConvention = CallingConvention.Cdecl)]
146 internal static extern NNStreamerError SetPropertyUInt64(IntPtr element_handle, string property_name, ulong value);
148 /* int ml_pipeline_element_set_property_double (ml_pipeline_element_h elem_h, const char *property_name, const double value); */
149 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_set_property_double", CallingConvention = CallingConvention.Cdecl)]
150 internal static extern NNStreamerError SetPropertyDouble(IntPtr element_handle, string property_name, double value);
152 /* int ml_pipeline_element_set_property_enum (ml_pipeline_element_h elem_h, const char *property_name, const uint32_t value); */
153 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_set_property_enum", CallingConvention = CallingConvention.Cdecl)]
154 internal static extern NNStreamerError SetPropertyEnum(IntPtr element_handle, string property_name, uint value);
156 /* int ml_pipeline_element_get_property_bool (ml_pipeline_element_h elem_h, const char *property_name, int32_t *value); */
157 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_property_bool", CallingConvention = CallingConvention.Cdecl)]
158 internal static extern NNStreamerError GetPropertyBool(IntPtr element_handle, string property_name, out int value);
160 /* int ml_pipeline_element_get_property_string (ml_pipeline_element_h elem_h, const char *property_name, char **value); */
161 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_property_string", CallingConvention = CallingConvention.Cdecl)]
162 internal static extern NNStreamerError GetPropertyString(IntPtr element_handle, string property_name, out string value);
164 /* int ml_pipeline_element_get_property_int32 (ml_pipeline_element_h elem_h, const char *property_name, int32_t *value); */
165 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_property_int32", CallingConvention = CallingConvention.Cdecl)]
166 internal static extern NNStreamerError GetPropertyInt32(IntPtr element_handle, string property_name, out int value);
168 /* int ml_pipeline_element_get_property_int64 (ml_pipeline_element_h elem_h, const char *property_name, int64_t *value); */
169 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_property_int64", CallingConvention = CallingConvention.Cdecl)]
170 internal static extern NNStreamerError GetPropertyInt64(IntPtr element_handle, string property_name, out long value);
172 /* int ml_pipeline_element_get_property_uint32 (ml_pipeline_element_h elem_h, const char *property_name, uint32_t *value); */
173 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_property_uint32", CallingConvention = CallingConvention.Cdecl)]
174 internal static extern NNStreamerError GetPropertyUInt32(IntPtr element_handle, string property_name, out uint value);
176 /* int ml_pipeline_element_get_property_uint64 (ml_pipeline_element_h elem_h, const char *property_name, uint64_t *value); */
177 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_property_uint64", CallingConvention = CallingConvention.Cdecl)]
178 internal static extern NNStreamerError GetPropertyUInt64(IntPtr element_handle, string property_name, out ulong value);
180 /* int ml_pipeline_element_get_property_double (ml_pipeline_element_h elem_h, const char *property_name, double *value); */
181 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_property_double", CallingConvention = CallingConvention.Cdecl)]
182 internal static extern NNStreamerError GetPropertyDouble(IntPtr element_handle, string property_name, out double value);
184 /* int ml_pipeline_element_get_property_enum (ml_pipeline_element_h elem_h, const char *property_name, uint32_t *value); */
185 [DllImport(Libraries.Nnstreamer, EntryPoint = "ml_pipeline_element_get_property_enum", CallingConvention = CallingConvention.Cdecl)]
186 internal static extern NNStreamerError GetPropertyEnum(IntPtr element_handle, string property_name, out uint value);
189 internal static partial class SingleShot
191 /* 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) */
192 [DllImport(Libraries.MlSingle, EntryPoint = "ml_single_open", CallingConvention = CallingConvention.Cdecl)]
193 internal static extern NNStreamerError OpenSingle(out IntPtr single_handle, string model_path, IntPtr input_info, IntPtr output_info, NNFWType nn_type, HWType hw_type);
195 /* int ml_single_close (ml_single_h single) */
196 [DllImport(Libraries.MlSingle, EntryPoint = "ml_single_close", CallingConvention = CallingConvention.Cdecl)]
197 internal static extern NNStreamerError CloseSingle(IntPtr single_handle);
199 /* int ml_single_invoke (ml_single_h single, const ml_tensors_data_h input, ml_tensors_data_h *output) */
200 [DllImport(Libraries.MlSingle, EntryPoint = "ml_single_invoke", CallingConvention = CallingConvention.Cdecl)]
201 internal static extern NNStreamerError InvokeSingle(IntPtr single_handle, IntPtr input_data, out IntPtr output_data);
203 /* 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) */
204 [DllImport(Libraries.MlSingle, EntryPoint = "ml_single_invoke_dynamic", CallingConvention = CallingConvention.Cdecl)]
205 internal static extern NNStreamerError InvokeSingleDynamic(IntPtr single_handle, IntPtr input_data, IntPtr input_info, out IntPtr output_data, out IntPtr output_info);
207 /* int ml_single_get_input_info (ml_single_h single, ml_tensors_info_h *info) */
208 [DllImport(Libraries.MlSingle, EntryPoint = "ml_single_get_input_info", CallingConvention = CallingConvention.Cdecl)]
209 internal static extern NNStreamerError GetInputTensorsInfo(IntPtr single_handle, out IntPtr input_info);
211 /* int ml_single_get_output_info (ml_single_h single, ml_tensors_info_h *info) */
212 [DllImport(Libraries.MlSingle, EntryPoint = "ml_single_get_output_info", CallingConvention = CallingConvention.Cdecl)]
213 internal static extern NNStreamerError GetOutputTensorsInfo(IntPtr single_handle, out IntPtr output_info);
215 /* int ml_single_set_input_info (ml_single_h single, const ml_tensors_info_h info) */
216 [DllImport(Libraries.MlSingle, EntryPoint = "ml_single_set_input_info", CallingConvention = CallingConvention.Cdecl)]
217 internal static extern NNStreamerError SetInputInfo(IntPtr single_handle, IntPtr in_handle);
219 /* int ml_single_set_timeout (ml_single_h single, unsigned int timeout)*/
220 [DllImport(Libraries.MlSingle, EntryPoint = "ml_single_set_timeout", CallingConvention = CallingConvention.Cdecl)]
221 internal static extern NNStreamerError SetTimeout(IntPtr single_handle, int time_ms);
223 /* int ml_single_set_property (ml_single_h single, const char *name, const char *value) */
224 [DllImport(Libraries.MlSingle, EntryPoint = "ml_single_set_property", CallingConvention = CallingConvention.Cdecl)]
225 internal static extern NNStreamerError SetValue(IntPtr single_handle, string name, string value);
227 /* int ml_single_get_property (ml_single_h single, const char *name, char **value) */
228 [DllImport(Libraries.MlSingle, EntryPoint = "ml_single_get_property", CallingConvention = CallingConvention.Cdecl)]
229 internal static extern NNStreamerError GetValue(IntPtr single_handle, string name, out IntPtr value);
232 internal static partial class Util
234 /* int ml_tensors_info_create (ml_tensors_info_h *info) */
235 [DllImport(Libraries.MlCommon, EntryPoint = "ml_tensors_info_create", CallingConvention = CallingConvention.Cdecl)]
236 internal static extern NNStreamerError CreateTensorsInfo(out IntPtr info);
238 /* int ml_tensors_info_create_extended (ml_tensors_info_h *info) */
239 [DllImport(Libraries.MlCommon, EntryPoint = "ml_tensors_info_create_extended", CallingConvention = CallingConvention.Cdecl)]
240 internal static extern NNStreamerError CreateTensorsInfoExtended(out IntPtr info);
242 /* int ml_tensors_info_destroy (ml_tensors_info_h info) */
243 [DllImport(Libraries.MlCommon, EntryPoint = "ml_tensors_info_destroy", CallingConvention = CallingConvention.Cdecl)]
244 internal static extern NNStreamerError DestroyTensorsInfo(IntPtr info);
246 /* int ml_tensors_info_set_count (ml_tensors_info_h info, unsigned int count) */
247 [DllImport(Libraries.MlCommon, EntryPoint = "ml_tensors_info_set_count", CallingConvention = CallingConvention.Cdecl)]
248 internal static extern NNStreamerError SetTensorsCount(IntPtr info, int count);
250 /* int ml_tensors_info_get_count (ml_tensors_info_h info, unsigned int *count) */
251 [DllImport(Libraries.MlCommon, EntryPoint = "ml_tensors_info_get_count", CallingConvention = CallingConvention.Cdecl)]
252 internal static extern NNStreamerError GetTensorsCount(IntPtr info, out int count);
254 /* int ml_tensors_info_set_tensor_name (ml_tensors_info_h info, unsigned int index, const char *name) */
255 [DllImport(Libraries.MlCommon, EntryPoint = "ml_tensors_info_set_tensor_name", CallingConvention = CallingConvention.Cdecl)]
256 internal static extern NNStreamerError SetTensorName(IntPtr info, int index, string name);
258 /* int ml_tensors_info_get_tensor_name (ml_tensors_info_h info, unsigned int index, char **name) */
259 [DllImport(Libraries.MlCommon, EntryPoint = "ml_tensors_info_get_tensor_name", CallingConvention = CallingConvention.Cdecl)]
260 internal static extern NNStreamerError GetTensorName(IntPtr info, int index, out string name);
262 /* int ml_tensors_info_set_tensor_type (ml_tensors_info_h info, unsigned int index, const ml_tensor_type_e type) */
263 [DllImport(Libraries.MlCommon, EntryPoint = "ml_tensors_info_set_tensor_type", CallingConvention = CallingConvention.Cdecl)]
264 internal static extern NNStreamerError SetTensorType(IntPtr info, int index, TensorType type);
266 /* int ml_tensors_info_get_tensor_type (ml_tensors_info_h info, unsigned int index, ml_tensor_type_e *type) */
267 [DllImport(Libraries.MlCommon, EntryPoint = "ml_tensors_info_get_tensor_type", CallingConvention = CallingConvention.Cdecl)]
268 internal static extern NNStreamerError GetTensorType(IntPtr info, int index, out TensorType type);
270 /* int ml_tensors_info_set_tensor_dimension (ml_tensors_info_h info, unsigned int index, const ml_tensor_dimension dimension) */
271 [DllImport(Libraries.MlCommon, EntryPoint = "ml_tensors_info_set_tensor_dimension", CallingConvention = CallingConvention.Cdecl)]
272 internal static extern NNStreamerError SetTensorDimension(IntPtr info, int index, int[] dimension);
274 /* int ml_tensors_info_get_tensor_dimension (ml_tensors_info_h info, unsigned int index, ml_tensor_dimension dimension) */
275 [DllImport(Libraries.MlCommon, EntryPoint = "ml_tensors_info_get_tensor_dimension", CallingConvention = CallingConvention.Cdecl)]
276 internal static extern NNStreamerError GetTensorDimension(IntPtr info, int index, [In, Out] uint[] dimension);
278 /* int ml_tensors_data_create (const ml_tensors_info_h info, ml_tensors_data_h *data) */
279 [DllImport(Libraries.MlCommon, EntryPoint = "ml_tensors_data_create", CallingConvention = CallingConvention.Cdecl)]
280 internal static extern NNStreamerError CreateTensorsData(IntPtr info, out IntPtr data);
282 /* int ml_tensors_data_destroy (ml_tensors_data_h data) */
283 [DllImport(Libraries.MlCommon, EntryPoint = "ml_tensors_data_destroy", CallingConvention = CallingConvention.Cdecl)]
284 internal static extern NNStreamerError DestroyTensorsData(IntPtr data);
286 /* int ml_tensors_data_get_tensor_data (ml_tensors_data_h data, unsigned int index, void **raw_data, size_t *data_size) */
287 [DllImport(Libraries.MlCommon, EntryPoint = "ml_tensors_data_get_tensor_data", CallingConvention = CallingConvention.Cdecl)]
288 internal static extern NNStreamerError GetTensorData(IntPtr data, int index, out IntPtr raw_data, out int data_size);
290 /* int ml_tensors_data_set_tensor_data (ml_tensors_data_h data, unsigned int index, const void *raw_data, const size_t data_size) */
291 [DllImport(Libraries.MlCommon, EntryPoint = "ml_tensors_data_set_tensor_data", CallingConvention = CallingConvention.Cdecl)]
292 internal static extern NNStreamerError SetTensorData(IntPtr data, int index, byte[] raw_data, int data_size);
294 /* int ml_check_nnfw_availability (ml_nnfw_type_e nnfw, ml_nnfw_hw_e hw, bool *available); */
295 [DllImport(Libraries.MlSingle, EntryPoint = "ml_check_nnfw_availability", CallingConvention = CallingConvention.Cdecl)]
296 internal static extern NNStreamerError CheckNNFWAvailability(NNFWType nnfw, HWType hw, out bool available);
298 internal static byte[] IntPtrToByteArray(IntPtr unmanagedByteArray, int size)
300 byte[] retByte = new byte[size];
301 Marshal.Copy(unmanagedByteArray, retByte, 0, size);
305 internal static string IntPtrToString(IntPtr val)
307 return (val != IntPtr.Zero) ? Marshal.PtrToStringAnsi(val) : string.Empty;