Soft backend: base functions for deserialization (#819)

Add library for parameter deserialization(like deserializeShape, deserializeKernel)

Signed-off-by: Efimov Alexander <a.efimov@samsung.com>

diff --git a/contrib/nnc/libs/backend/soft/include/cpp_operations.def b/contrib/nnc/libs/backend/soft/include/cpp_operations.def
index 02f4cd9..645fae6 100644 (file)
--- a/contrib/nnc/libs/backend/soft/include/cpp_operations.def
+++ b/contrib/nnc/libs/backend/soft/include/cpp_operations.def
@@ -51,6 +51,72 @@ void releaseParameters(char *data, size_t len)
   assert(res == 0);
 }
 
+template <int rank>
+size_t volume(Dims<rank> d)
+{
+  size_t v = 1;
+  for (int i = 0; i < rank; ++i)
+  {
+    v *= d.sizes[i];
+  }
+  return v;
+}
+
+Dims<4> shapeToDims(const Shape &s)
+{
+  Dims<4> dims;
+  assert(s.size() == 4);
+  int stride = 1;
+  for (int i = 0; i < s.size(); ++i)
+  {
+    dims.sizes[i] = s[i];
+    dims.strides[i] = stride;
+    stride *= s[i];
+  }
+  return dims;
+}
+
+template <class T>
+static inline T deserializeT(const char *&buf)
+{
+  T v;
+  const char *end = buf + sizeof(T);
+  copy(buf, end, reinterpret_cast<char *>(&v));
+  buf = end;
+  return v;
+}
+
+static inline Shape deserializeShape(const char *&buf)
+{
+  Shape s;
+  char rank = deserializeT<char>(buf);
+  s.resize(rank);
+  for (int i = 0; i < rank; ++i)
+  {
+    s.set(i, deserializeT<int32_t>(buf));
+  }
+  return s;
+}
+
+struct Kernel
+{
+  const float *data;
+  Dims<4> dims;
+};
+
+static inline Kernel deserializeKernel(const char *&buf)
+{
+  char dType = deserializeT<char>(buf);
+  assert(dType == 1 && "Unknown data type");
+  char eSize = deserializeT<char>(buf);
+  assert(eSize == 4 && "Unsupported element size");
+  Kernel k;
+  k.dims = shapeToDims(deserializeShape(buf));
+  k.data = reinterpret_cast<const float *>(buf);
+  buf += volume(k.dims) * eSize;
+  return k;
+}
+
 template <class ...Args>
 void concat(Tensor &out, const char *params, Args &...args)
 {