summaryrefslogtreecommitdiff
path: root/runtime/contrib/pure_arm_compute/src/internal/Swizzle.h
diff options
context:
space:
mode:
Diffstat (limited to 'runtime/contrib/pure_arm_compute/src/internal/Swizzle.h')
-rw-r--r--runtime/contrib/pure_arm_compute/src/internal/Swizzle.h115
1 files changed, 115 insertions, 0 deletions
diff --git a/runtime/contrib/pure_arm_compute/src/internal/Swizzle.h b/runtime/contrib/pure_arm_compute/src/internal/Swizzle.h
new file mode 100644
index 000000000..f127b8a3b
--- /dev/null
+++ b/runtime/contrib/pure_arm_compute/src/internal/Swizzle.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file Swizzle.h
+ * @ingroup COM_AI_RUNTIME
+ * @brief This file defines ARMComputeAxis class and utility functions to support mapping
+ * between arm compute axis and NNAPI axis
+ */
+#ifndef __SWIZZLE_H__
+#define __SWIZZLE_H__
+
+/**
+ * @brief Class to represent arm compute axis
+ */
+class ARMComputeAxis
+{
+public:
+ /**
+ * @brief Construct a new ARMComputeAxis object
+ */
+ ARMComputeAxis() = default;
+
+public:
+ /**
+ * @brief Construct a new ARMComputeAxis object
+ * @param[in] value Raw axis number
+ */
+ explicit ARMComputeAxis(uint32_t value) : _value{value}
+ {
+ // DO NOTHING
+ }
+
+public:
+ /**
+ * @brief Get raw axis number
+ * @return Raw axis number
+ */
+ uint32_t value(void) const { return _value; }
+
+private:
+ uint32_t _value;
+};
+
+/**
+ * @brief Convert T/F Lite / NNAPI axis (based on ...NHWC) to arm compute axis (WHCN...)
+ * @param[in] rank Rank of shape
+ * @param[in] axis Axis to map
+ * @return ARMComputeAxis including arm compute axis info
+ */
+inline ARMComputeAxis ToARMComputeAxis(uint32_t rank, uint32_t axis)
+{
+ assert(rank > axis);
+ const ARMComputeAxis reversed{(rank - axis) - 1};
+
+ if (rank < 4)
+ {
+ return reversed;
+ }
+
+ // DEPTH
+ if (0 == reversed.value())
+ {
+ return ARMComputeAxis{2};
+ }
+ // WIDTH
+ if (1 == reversed.value())
+ {
+ return ARMComputeAxis{0};
+ }
+ // HEIGHT
+ if (2 == reversed.value())
+ {
+ return ARMComputeAxis{1};
+ }
+
+ // ELSE
+ return reversed;
+}
+
+#include <cassert>
+
+/**
+ * @brief Covert bitmask info from NNAPI axis to arm compute axis
+ * @param[in] in Bitmask data
+ * @param[in] numOfBits Used bits (rank)
+ * @return Coverted bitmask
+ */
+template <typename T> inline T ReorderBits(T in, size_t numOfBits)
+{
+ assert(numOfBits > 0);
+ T out = 0;
+ for (int32_t i = numOfBits - 1; i >= 0; --i)
+ {
+ const uint32_t toShift = numOfBits - ToARMComputeAxis(numOfBits, i).value() - 1;
+ out += ((in & 1) << toShift);
+ in >>= 1;
+ }
+ return out;
+}
+
+#endif // __SWIZZLE_H__