diff options
Diffstat (limited to 'src/core/utils')
-rw-r--r-- | src/core/utils/ScaleUtils.cpp | 44 | ||||
-rw-r--r-- | src/core/utils/ScaleUtils.h | 67 |
2 files changed, 111 insertions, 0 deletions
diff --git a/src/core/utils/ScaleUtils.cpp b/src/core/utils/ScaleUtils.cpp new file mode 100644 index 0000000000..488b3dfaf5 --- /dev/null +++ b/src/core/utils/ScaleUtils.cpp @@ -0,0 +1,44 @@ +/* + * Copyright (c) 2020 ARM Limited. + * + * SPDX-License-Identifier: MIT + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#include "src/core/utils/ScaleUtils.h" +#include "arm_compute/core/Helpers.h" + +float arm_compute::scale_utils::calculate_resize_ratio(size_t input_size, size_t output_size, bool align_corners) +{ + const size_t offset = align_corners ? 1 : 0; + const auto in = input_size - offset; + const auto out = output_size - offset; + + ARM_COMPUTE_ERROR_ON((input_size == 0 || output_size == 0) && offset == 1); + ARM_COMPUTE_ERROR_ON(out == 0); + + return static_cast<float>(in) / static_cast<float>(out); +} + +bool arm_compute::scale_utils::is_align_corners_allowed_output_shape(const TensorShape &output_shape, DataLayout layout) +{ + const size_t idx_width = get_data_layout_dimension_index(layout, DataLayoutDimension::WIDTH); + const size_t idx_height = get_data_layout_dimension_index(layout, DataLayoutDimension::HEIGHT); + return (output_shape[idx_width] > 1) && (output_shape[idx_height] > 1); +}
\ No newline at end of file diff --git a/src/core/utils/ScaleUtils.h b/src/core/utils/ScaleUtils.h new file mode 100644 index 0000000000..c3895d4ec0 --- /dev/null +++ b/src/core/utils/ScaleUtils.h @@ -0,0 +1,67 @@ +/* + * Copyright (c) 2020 ARM Limited. + * + * SPDX-License-Identifier: MIT + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef UTILS_CORE_SCALEUTILS_H +#define UTILS_CORE_SCALEUTILS_H + +#include "arm_compute/core/Types.h" + +#include <cstdint> +#include <cstdlib> + +namespace arm_compute +{ +namespace scale_utils +{ +/** Returns resize ratio between input and output with consideration of aligned corners + * + * @param[in] input_size The input size + * @param[in] output_size the output size + * @param[in] align_corners True to align corners of input and output. Defaults to false. + * + * @return The ratio between input and output (i.e., the input size divided by the output size) + */ +float calculate_resize_ratio(size_t input_size, size_t output_size, bool align_corners = false); + +/** Returns if aligned corners are allowed for the given sampling policy + * + * @param[in] sampling_policy The sampling policy to consider + * + * @return True if aligned corners are allowed + */ +inline bool is_align_corners_allowed_sampling_policy(SamplingPolicy sampling_policy) +{ + return sampling_policy != SamplingPolicy::CENTER; +} + +/** Returns if aligned corners are allowed for the given output shape + * + * @param[in] output_shape The shape of the scaled output tensor + * @param[in] layout The data layout of the output tensor + * + * @return True if aligned corners are allowed + */ +bool is_align_corners_allowed_output_shape(const TensorShape &output_shape, DataLayout layout); +} // namespace scale_utils +} // namespace arm_compute +#endif /* UTILS_CORE_SCALEUTILS_H */
\ No newline at end of file |