| /* | |
| * Copyright (C) 2017 The Android Open Source Project | |
| * | |
| * 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. | |
| */ | |
| #ifndef ANDROID_PACKAGES_MODULES_NEURALNETWORKS_COMMON_OPERATIONS_UTILS_H | |
| #define ANDROID_PACKAGES_MODULES_NEURALNETWORKS_COMMON_OPERATIONS_UTILS_H | |
| #include <algorithm> | |
| #include <cstdint> | |
| #include <vector> | |
| #include "nnapi/TypeUtils.h" | |
| #include "nnapi/Types.h" | |
| namespace android { | |
| namespace nn { | |
| // DEPRECATED. Use NN_RET_CHECK instead. | |
| #define NN_CHECK(x) NN_RET_CHECK(x) | |
| #define NN_OPS_CHECK(x) NN_RET_CHECK(x) | |
| // DEPRECATED. Use NN_RET_CHECK_EQ instead. | |
| #define NN_CHECK_EQ(x, y) NN_RET_CHECK_EQ(x, y) | |
| // An 8-bit boolean type (sizeof(bool) is implementation-defined). | |
| typedef uint8_t bool8; | |
| enum PaddingScheme { | |
| kPaddingUnknown = 0, | |
| kPaddingSame = 1, | |
| kPaddingValid = 2, | |
| }; | |
| // Stores operand type information. "Shape" is a historical name. | |
| struct Shape { | |
| OperandType type = OperandType::FLOAT32; | |
| std::vector<uint32_t> dimensions; | |
| float scale = 0.0f; | |
| int32_t offset = 0; | |
| Operand::ExtraParams extraParams; | |
| }; | |
| // Provides information available during graph creation to validate an operation. | |
| class IOperationValidationContext { | |
| public: | |
| virtual ~IOperationValidationContext() {} | |
| virtual const char* getOperationName() const = 0; | |
| virtual uint32_t getNumInputs() const = 0; | |
| virtual OperandType getInputType(uint32_t index) const = 0; | |
| virtual Shape getInputShape(uint32_t index) const = 0; | |
| virtual const Operand::ExtraParams& getInputExtraParams(uint32_t index) const = 0; | |
| virtual uint32_t getNumOutputs() const = 0; | |
| virtual OperandType getOutputType(uint32_t index) const = 0; | |
| virtual Shape getOutputShape(uint32_t index) const = 0; | |
| }; | |
| // Provides inputs and outputs during operation execution. | |
| class IOperationExecutionContext { | |
| public: | |
| virtual ~IOperationExecutionContext() {} | |
| virtual uint32_t getNumInputs() const = 0; | |
| virtual OperandType getInputType(uint32_t index) const = 0; | |
| virtual Shape getInputShape(uint32_t index) const = 0; | |
| virtual const void* getInputBuffer(uint32_t index) const = 0; | |
| virtual const Operand::ExtraParams& getInputExtraParams(uint32_t index) const = 0; | |
| virtual uint32_t getNumOutputs() const = 0; | |
| virtual OperandType getOutputType(uint32_t index) const = 0; | |
| virtual Shape getOutputShape(uint32_t index) const = 0; | |
| virtual void* getOutputBuffer(uint32_t index) = 0; | |
| // Updates the output shape, allocating the buffer if necessary. | |
| virtual bool setOutputShape(uint32_t index, const Shape& shape) = 0; | |
| virtual bool isOmittedInput(uint32_t index) const = 0; | |
| virtual bool isOmittedOutput(uint32_t index) const = 0; | |
| template <typename T> | |
| const T* getInputBuffer(uint32_t index) const { | |
| return reinterpret_cast<const T*>(getInputBuffer(index)); | |
| } | |
| template <typename T> | |
| T* getOutputBuffer(uint32_t index) { | |
| return reinterpret_cast<T*>(getOutputBuffer(index)); | |
| } | |
| template <typename T> | |
| T getInputValue(uint32_t index) const { | |
| return getInputBuffer<T>(index)[0]; | |
| } | |
| }; | |
| // Verifies that the number and types of operation inputs are as expected. | |
| bool validateInputTypes(const IOperationValidationContext* context, | |
| const std::vector<OperandType>& expectedTypes); | |
| // Verifies that the number and types of operation outputs are as expected. | |
| bool validateOutputTypes(const IOperationValidationContext* context, | |
| const std::vector<OperandType>& expectedTypes); | |
| // Verifies that the HAL version specified in the context is greater or equal | |
| // than the minimal supported HAL version. | |
| bool validateVersion(const IOperationValidationContext* context, Version contextVersion, | |
| Version minSupportedVersion); | |
| // Verifies that the two shapes are the same. | |
| bool SameShape(const Shape& in1, const Shape& in2); | |
| // Sets out to the same shape as in. | |
| bool SetShape(const Shape& in, Shape* out); | |
| // Return the total number of elements, i.e. all the dimensions multiplied | |
| // together. For a scalar, returns one. | |
| uint32_t getNumberOfElements(const Shape& shape); | |
| uint32_t getNumberOfElements(const Shape& shape, size_t firstAxisInclusive, | |
| size_t lastAxisExclusive); | |
| uint32_t getNumberOfDimensions(const Shape& shape); | |
| uint32_t getSizeOfDimension(const Shape& shape, uint32_t dimensionIdx); | |
| uint32_t hasKnownRank(const Shape& shape); | |
| // Converts an axis index from the range [-dims, dims) into the range [0, dims). | |
| bool handleNegativeAxis(int32_t numberOfDimensions, int32_t* axis); | |
| inline bool handleNegativeAxis(const Shape& shape, int32_t* axis) { | |
| return handleNegativeAxis(getNumberOfDimensions(shape), axis); | |
| } | |
| inline int32_t computeOutSize(int32_t imageSize, int32_t filterSize, int32_t stride, | |
| int32_t paddingHead, int32_t paddingTail) { | |
| return (imageSize - filterSize + stride + paddingHead + paddingTail) / stride; | |
| } | |
| inline int32_t computeOutSize(int32_t imageSize, int32_t filterSize, int32_t stride, | |
| int32_t dilationRate, int32_t paddingHead, int32_t paddingTail) { | |
| int32_t effectiveFilterSize = ((filterSize - 1) * dilationRate + 1); | |
| return (imageSize - effectiveFilterSize + stride + paddingHead + paddingTail) / stride; | |
| } | |
| inline int32_t computeOutSizeTransposeConv(int32_t imageSize, int32_t filterSize, int32_t stride, | |
| int32_t paddingHead, int32_t paddingTail) { | |
| return imageSize * stride + filterSize - stride - paddingHead - paddingTail; | |
| } | |
| [[nodiscard]] bool QuantizeMultiplier(double double_multiplier, int32_t* quantized_multiplier, | |
| int32_t* shift); | |
| [[nodiscard]] bool QuantizeMultiplierSmallerThanOne(double double_multiplier, | |
| int32_t* quantized_multiplier, | |
| int32_t* right_shift); | |
| // Same as QuantizeMultiplierSmallerThanOne but returns left shift (i.e. negated | |
| // right shift), so that it has the same interface as | |
| // QuantizeMultiplierGreaterThanOne and QuantizeMultiplier functions. | |
| [[nodiscard]] bool QuantizeMultiplierSmallerThanOneExp(double double_multiplier, | |
| int32_t* quantized_multiplier, | |
| int32_t* left_shift); | |
| [[nodiscard]] bool QuantizeMultiplierGreaterThanOne(double double_multiplier, | |
| int32_t* quantized_multiplier, int* left_shift); | |
| [[nodiscard]] bool GetQuantizedConvolutionMultipler(const Shape& inputShape, | |
| const Shape& filterShape, | |
| const Shape& biasShape, | |
| const Shape& outputShape, double* multiplier); | |
| [[nodiscard]] bool GetQuantizedConvolutionMultiplier(const Shape& inputShape, | |
| const Shape& filterShape, | |
| const Shape& outputShape, double* multiplier); | |
| void CalculateActivationRangeUint8(int32_t activation, const Shape& outputShape, int32_t* act_min, | |
| int32_t* act_max); | |
| void CalculateActivationRangeInt8(int32_t activation, const Shape& outputShape, int32_t* act_min, | |
| int32_t* act_max); | |
| void CalculateActivationRangeFloat(int32_t activation, float* activation_min, | |
| float* activation_max); | |
| int32_t CalculateInputRadius(int input_integer_bits, int input_left_shift); | |
| void calculateExplicitPaddingImpl(int32_t in_size, int32_t stride, int32_t dilation_factor, | |
| int32_t filter_size, int32_t padding_implicit, | |
| bool isTransposeConv, int32_t* padding_head, | |
| int32_t* padding_tail); | |
| inline void calculateExplicitPadding(int32_t in_size, int32_t stride, int32_t dilation_factor, | |
| int32_t filter_size, int32_t padding_implicit, | |
| int32_t* padding_head, int32_t* padding_tail) { | |
| calculateExplicitPaddingImpl(in_size, stride, dilation_factor, filter_size, padding_implicit, | |
| /*isTransposeConv=*/false, padding_head, padding_tail); | |
| } | |
| inline void calculateExplicitPadding(int32_t in_size, int32_t stride, int32_t filter_size, | |
| int32_t padding_implicit, int32_t* padding_head, | |
| int32_t* padding_tail) { | |
| calculateExplicitPadding(in_size, stride, 1, filter_size, padding_implicit, padding_head, | |
| padding_tail); | |
| } | |
| inline void calculateExplicitPaddingTransposeConv(int32_t in_size, int32_t stride, | |
| int32_t filter_size, int32_t padding_implicit, | |
| int32_t* padding_head, int32_t* padding_tail) { | |
| calculateExplicitPaddingImpl(in_size, stride, /*dilation_factor=*/1, filter_size, | |
| padding_implicit, /*isTransposeConv=*/true, padding_head, | |
| padding_tail); | |
| } | |
| inline PaddingScheme getPaddingScheme(int32_t inWidth, int32_t inHeight, int32_t strideWidth, | |
| int32_t strideHeight, int32_t filterWidth, | |
| int32_t filterHeight, int32_t paddingLeft, | |
| int32_t paddingRight, int32_t paddingTop, | |
| int32_t paddingBottom) { | |
| if (paddingLeft == 0 && paddingRight == 0 && paddingTop == 0 && paddingBottom == 0) { | |
| return kPaddingValid; | |
| } | |
| int32_t expectedPaddingLeft, expectedPaddingRight; | |
| int32_t expectedPaddingTop, expectedPaddingBottom; | |
| calculateExplicitPadding(inWidth, strideWidth, filterWidth, kPaddingSame, &expectedPaddingLeft, | |
| &expectedPaddingRight); | |
| calculateExplicitPadding(inHeight, strideHeight, filterHeight, kPaddingSame, | |
| &expectedPaddingTop, &expectedPaddingBottom); | |
| if (expectedPaddingLeft == paddingLeft && expectedPaddingRight == paddingRight && | |
| expectedPaddingTop == paddingTop && expectedPaddingBottom == paddingBottom) { | |
| return kPaddingSame; | |
| } else { | |
| return kPaddingUnknown; | |
| } | |
| } | |
| // Reverse order of bits in the mask to match the expected order in kernel | |
| inline int ReverseMaskBits(int mask, int num_dimensions) { | |
| int out = 0; | |
| for (int dim = 0; dim < num_dimensions; dim++) { | |
| out <<= 1; | |
| out += (mask & 1); | |
| mask >>= 1; | |
| } | |
| return out; | |
| } | |
| // Compute the positive remainder. | |
| inline int32_t PositiveRemainder(int32_t dividend, int32_t divisor) { | |
| return (divisor + (dividend % divisor)) % divisor; | |
| } | |
| // Compute clamped index. | |
| inline int32_t ClampedIndex(int32_t index, int dim, bool pos_stride) { | |
| return pos_stride | |
| ? (index >= dim ? dim | |
| : PositiveRemainder(std::min(std::max(index, -dim), dim), dim)) | |
| : (index < -dim | |
| ? -1 | |
| : PositiveRemainder(std::min(std::max(index, -dim), dim - 1), dim)); | |
| } | |
| // Broadcasts input shape against one another and puts the result into output | |
| // shape. Returns true on success and false on error. | |
| bool calculateBroadcastedShape(const Shape& in1, const Shape& in2, Shape* out); | |
| // Dequantizes a value and quantizes it back using new scale and offset. | |
| template <typename T> | |
| T requantize(T value, const Shape& oldShape, const Shape& newShape); | |
| // Preparation functions for the corresponding ops | |
| bool floorPrepare(const Shape& input, Shape* output); | |
| bool depthwiseConvPrepare(const Shape& input, const Shape& filter, const Shape& bias, | |
| int32_t padding_left, int32_t padding_right, int32_t padding_top, | |
| int32_t padding_bottom, int32_t stride_width, int32_t stride_height, | |
| int32_t depth_multiplier, int32_t dilation_width_factor, | |
| int32_t dilation_height_factor, Shape* output); | |
| bool genericActivationPrepare(const Shape& input, Shape* output); | |
| bool reshapePrepare(const Shape& input, const int32_t* targetDims, const int32_t targetDimsSize, | |
| Shape* output); | |
| bool depthToSpacePrepare(const Shape& input, int32_t blockSize, Shape* output); | |
| bool spaceToDepthPrepare(const Shape& input, int32_t blockSize, Shape* output); | |
| bool embeddingLookupPrepare(const Shape& valueShape, const Shape& lookupShape, Shape* outputShape); | |
| bool hashtableLookupPrepare(const Shape& lookupShape, const Shape& keyShape, | |
| const Shape& valueShape, Shape* outputShape, Shape* hitShape); | |
| bool padPrepare(const Shape& input, const int32_t* paddingsData, const Shape& paddingsShape, | |
| Shape* output); | |
| bool batchToSpacePrepare(const Shape& input, const int32_t* blockSizeData, | |
| const Shape& blockSizeShape, Shape* output); | |
| bool spaceToBatchPrepare(const Shape& input, const int32_t* blockSizeData, | |
| const Shape& blockSizeShape, const int32_t* paddingsData, | |
| const Shape& paddingsShape, Shape* output); | |
| bool meanPrepare(const Shape& input, const int32_t* axisData, const Shape& axisShape, bool keepDims, | |
| Shape* output); | |
| bool argMinMaxPrepare(const Shape& input, int32_t axis, Shape* output); | |
| bool splitPrepare(const Shape& input, int32_t axis, int32_t numOutputs, std::vector<Shape>* output); | |
| bool groupedConvPrepare(const Shape& input, const Shape& filter, const Shape& bias, | |
| int32_t padding_left, int32_t padding_right, int32_t padding_top, | |
| int32_t padding_bottom, int32_t stride_width, int32_t stride_height, | |
| int32_t numGroups, Shape* output); | |
| // Transposes the first two dimensions. | |
| template <typename T> | |
| inline bool transposeFirstTwoDimensions(const T* buffer, const Shape& shape, T* transposedBuffer) { | |
| const int numDims = getNumberOfDimensions(shape); | |
| NN_RET_CHECK(numDims >= 2); | |
| const int firstDim = getSizeOfDimension(shape, 0); | |
| const int secondDim = getSizeOfDimension(shape, 1); | |
| int blockSize = 1; | |
| for (int i = 2; i < numDims; ++i) { | |
| blockSize *= getSizeOfDimension(shape, i); | |
| } | |
| for (int i = 0; i < firstDim; ++i) { | |
| for (int j = 0; j < secondDim; ++j) { | |
| for (int k = 0; k < blockSize; ++k) { | |
| transposedBuffer[(j * firstDim + i) * blockSize + k] = | |
| buffer[(i * secondDim + j) * blockSize + k]; | |
| } | |
| } | |
| } | |
| return true; | |
| } | |
| inline bool transposeFirstTwoDimensions(const Shape& shape, Shape* transposedShape) { | |
| NN_RET_CHECK(getNumberOfDimensions(shape) >= 2); | |
| *transposedShape = shape; | |
| transposedShape->dimensions[0] = shape.dimensions[1]; | |
| transposedShape->dimensions[1] = shape.dimensions[0]; | |
| return true; | |
| } | |
| // Given two 3-dimensional tensors, merge them into one 3-dimensional tensor | |
| // at the third dimension. The merged tensor's third dimension size will be | |
| // sum of that of the two inputs. | |
| template <typename T> | |
| inline bool mergeThirdDimension(const T* bufferA, const std::vector<uint32_t>& dimsA, | |
| const T* bufferB, const std::vector<uint32_t>& dimsB, T* merged) { | |
| NN_RET_CHECK_EQ(dimsA.size(), 3u); | |
| NN_RET_CHECK_EQ(dimsB.size(), 3u); | |
| NN_RET_CHECK_EQ(dimsA[0], dimsB[0]); | |
| NN_RET_CHECK_EQ(dimsA[1], dimsB[1]); | |
| for (unsigned int i = 0; i < dimsA[0]; ++i) { | |
| for (unsigned int j = 0; j < dimsA[1]; ++j) { | |
| for (unsigned int k = 0; k < dimsA[2]; ++k) { | |
| merged[(i * dimsA[1] + j) * (dimsA[2] + dimsB[2]) + k] = | |
| bufferA[(i * dimsA[1] + j) * dimsA[2] + k]; | |
| } | |
| for (unsigned int k = 0; k < dimsB[2]; ++k) { | |
| merged[(i * dimsA[1] + j) * (dimsA[2] + dimsB[2]) + dimsA[2] + k] = | |
| bufferB[(i * dimsB[1] + j) * dimsB[2] + k]; | |
| } | |
| } | |
| } | |
| return true; | |
| } | |
| template <typename T> | |
| inline T saturateCast(int32_t val); | |
| template <> | |
| inline uint8_t saturateCast<uint8_t>(int32_t val) { | |
| return static_cast<int8_t>(std::max(0, std::min(255, val))); | |
| } | |
| template <> | |
| inline int8_t saturateCast<int8_t>(int32_t val) { | |
| return static_cast<int8_t>(std::max(-128, std::min(127, val))); | |
| } | |
| } // namespace nn | |
| } // namespace android | |
| #endif // ANDROID_PACKAGES_MODULES_NEURALNETWORKS_COMMON_OPERATIONS_UTILS_H |