1 // Copyright (C) 2018-2019 Intel Corporation
2 // SPDX-License-Identifier: Apache-2.0
6 * @brief A header file that provides a set of convenience utility functions and the main include file for all other .h files.
7 * @file inference_engine.hpp
18 #include <ie_error.hpp>
19 #include <ie_layers.h>
20 #include <ie_plugin_dispatcher.hpp>
21 #include <ie_plugin_config.hpp>
22 #include <ie_icnn_network.hpp>
23 #include <ie_icnn_network_stats.hpp>
24 #include <ie_core.hpp>
25 #include <cpp/ie_cnn_net_reader.h>
26 #include <cpp/ie_plugin_cpp.hpp>
27 #include <cpp/ie_executable_network.hpp>
28 #include <ie_version.hpp>
30 namespace InferenceEngine {
32 * @brief Gets the top n results from a tblob
33 * @param n Top n count
34 * @param input 1D tblob that contains probabilities
35 * @param output Vector of indexes for the top n places
38 INFERENCE_ENGINE_DEPRECATED
39 inline void TopResults(unsigned int n, TBlob<T> &input, std::vector<unsigned> &output) {
40 SizeVector dims = input.getTensorDesc().getDims();
41 size_t input_rank = dims.size();
42 if (!input_rank || !dims[0])
43 THROW_IE_EXCEPTION << "Input blob has incorrect dimensions!";
44 size_t batchSize = dims[0];
45 std::vector<unsigned> indexes(input.size() / batchSize);
47 n = static_cast<unsigned>(std::min<size_t>((size_t) n, input.size()));
49 output.resize(n * batchSize);
51 for (size_t i = 0; i < batchSize; i++) {
52 size_t offset = i * (input.size() / batchSize);
53 T *batchData = input.data();
56 std::iota(std::begin(indexes), std::end(indexes), 0);
57 std::partial_sort(std::begin(indexes), std::begin(indexes) + n, std::end(indexes),
58 [&batchData](unsigned l, unsigned r) {
59 return batchData[l] > batchData[r];
61 for (unsigned j = 0; j < n; j++) {
62 output.at(i * n + j) = indexes.at(j);
67 #define TBLOB_TOP_RESULT(precision)\
68 case InferenceEngine::Precision::precision : {\
69 using myBlobType = InferenceEngine::PrecisionTrait<Precision::precision>::value_type;\
70 TBlob<myBlobType> &tblob = dynamic_cast<TBlob<myBlobType> &>(input);\
71 TopResults(n, tblob, output);\
76 * @brief Gets the top n results from a blob
77 * @param n Top n count
78 * @param input 1D blob that contains probabilities
79 * @param output Vector of indexes for the top n places
81 INFERENCE_ENGINE_DEPRECATED
82 inline void TopResults(unsigned int n, Blob &input, std::vector<unsigned> &output) {
83 IE_SUPPRESS_DEPRECATED_START
84 switch (input.getTensorDesc().getPrecision()) {
85 TBLOB_TOP_RESULT(FP32);
86 TBLOB_TOP_RESULT(FP16);
87 TBLOB_TOP_RESULT(Q78);
88 TBLOB_TOP_RESULT(I16);
91 TBLOB_TOP_RESULT(U16);
92 TBLOB_TOP_RESULT(I32);
94 THROW_IE_EXCEPTION << "cannot locate blob for precision: " << input.getTensorDesc().getPrecision();
96 IE_SUPPRESS_DEPRECATED_END
99 #undef TBLOB_TOP_RESULT
102 * @brief Copies a 8-bit RGB image to the blob.
103 * Throws an exception in case of dimensions or input size mismatch
104 * @tparam data_t Type of the target blob
105 * @param RGB8 8-bit RGB image
106 * @param RGB8_size Size of the image
107 * @param blob Target blob to write image to
109 template<typename data_t>
110 INFERENCE_ENGINE_DEPRECATED
111 void copyFromRGB8(uint8_t *RGB8, size_t RGB8_size, InferenceEngine::TBlob<data_t> *blob) {
112 SizeVector dims = blob->getTensorDesc().getDims();
113 if (4 != dims.size())
114 THROW_IE_EXCEPTION << "Cannot write data to input blob! Blob has incorrect dimensions size "
116 size_t num_channels = dims[1]; // because RGB
117 size_t num_images = dims[0];
120 size_t nPixels = w * h;
122 if (RGB8_size != w * h * num_channels * num_images)
123 THROW_IE_EXCEPTION << "input pixels mismatch, expecting " << w * h * num_channels * num_images
124 << " bytes, got: " << RGB8_size;
126 std::vector<data_t *> dataArray;
127 for (unsigned int n = 0; n < num_images; n++) {
128 for (unsigned int i = 0; i < num_channels; i++) {
129 if (!n && !i && dataArray.empty()) {
130 dataArray.push_back(blob->data());
132 dataArray.push_back(dataArray.at(n * num_channels + i - 1) + nPixels);
136 for (size_t n = 0; n < num_images; n++) {
137 size_t n_num_channels = n * num_channels;
138 size_t n_num_channels_nPixels = n_num_channels * nPixels;
139 for (size_t i = 0; i < nPixels; i++) {
140 size_t i_num_channels = i * num_channels + n_num_channels_nPixels;
141 for (size_t j = 0; j < num_channels; j++) {
142 dataArray.at(n_num_channels + j)[i] = RGB8[i_num_channels + j];
149 * @brief Splits the RGB channels to either I16 Blob or float blob.
150 * The image buffer is assumed to be packed with no support for strides.
151 * @param imgBufRGB8 Packed 24bit RGB image (3 bytes per pixel: R-G-B)
152 * @param lengthbytesSize Size in bytes of the RGB image. It is equal to amount of pixels times 3 (number of channels)
153 * @param input Blob to contain the split image (to 3 channels)
155 INFERENCE_ENGINE_DEPRECATED
156 inline void ConvertImageToInput(unsigned char *imgBufRGB8, size_t lengthbytesSize, Blob &input) {
157 IE_SUPPRESS_DEPRECATED_START
158 TBlob<float> *float_input = dynamic_cast<TBlob<float> *>(&input);
159 if (float_input != nullptr) copyFromRGB8(imgBufRGB8, lengthbytesSize, float_input);
161 TBlob<short> *short_input = dynamic_cast<TBlob<short> *>(&input);
162 if (short_input != nullptr) copyFromRGB8(imgBufRGB8, lengthbytesSize, short_input);
164 TBlob<uint8_t> *byte_input = dynamic_cast<TBlob<uint8_t> *>(&input);
165 if (byte_input != nullptr) copyFromRGB8(imgBufRGB8, lengthbytesSize, byte_input);
166 IE_SUPPRESS_DEPRECATED_END
170 * @brief Copies data from a certain precision to float
171 * @param dst Pointer to an output float buffer, must be allocated before the call
172 * @param src Source blob to take data from
175 INFERENCE_ENGINE_DEPRECATED
176 void copyToFloat(float *dst, const InferenceEngine::Blob *src) {
180 const InferenceEngine::TBlob<T> *t_blob = dynamic_cast<const InferenceEngine::TBlob<T> *>(src);
181 if (t_blob == nullptr) {
182 THROW_IE_EXCEPTION << "input type is " << src->getTensorDesc().getPrecision() << " but input is not " << typeid(T).name();
185 const T *srcPtr = t_blob->readOnly();
186 if (srcPtr == nullptr) {
187 THROW_IE_EXCEPTION << "Input data was not allocated.";
189 for (size_t i = 0; i < t_blob->size(); i++) dst[i] = srcPtr[i];
192 } // namespace InferenceEngine