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Diffstat (limited to 'thirdparty/basis_universal/encoder/basisu_ssim.h')
| -rw-r--r-- | thirdparty/basis_universal/encoder/basisu_ssim.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/thirdparty/basis_universal/encoder/basisu_ssim.h b/thirdparty/basis_universal/encoder/basisu_ssim.h new file mode 100644 index 0000000000..986ca3bbdf --- /dev/null +++ b/thirdparty/basis_universal/encoder/basisu_ssim.h @@ -0,0 +1,44 @@ +// basisu_ssim.h +// Copyright (C) 2019 Binomial LLC. 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. +#pragma once +#include "basisu_enc.h" + +namespace basisu +{ + float gauss(int x, int y, float sigma_sqr); + + enum + { + cComputeGaussianFlagNormalize = 1, + cComputeGaussianFlagPrint = 2, + cComputeGaussianFlagNormalizeCenterToOne = 4 + }; + + void compute_gaussian_kernel(float *pDst, int size_x, int size_y, float sigma_sqr, uint32_t flags = 0); + + void scale_image(const imagef &src, imagef &dst, const vec4F &scale, const vec4F &shift); + void add_weighted_image(const imagef &src1, const vec4F &alpha, const imagef &src2, const vec4F &beta, const vec4F &gamma, imagef &dst); + void add_image(const imagef &src1, const imagef &src2, imagef &dst); + void adds_image(const imagef &src, const vec4F &value, imagef &dst); + void mul_image(const imagef &src1, const imagef &src2, imagef &dst, const vec4F &scale); + void div_image(const imagef &src1, const imagef &src2, imagef &dst, const vec4F &scale); + vec4F avg_image(const imagef &src); + + void gaussian_filter(imagef &dst, const imagef &orig_img, uint32_t odd_filter_width, float sigma_sqr, bool wrapping = false, uint32_t width_divisor = 1, uint32_t height_divisor = 1); + + vec4F compute_ssim(const imagef &a, const imagef &b); + vec4F compute_ssim(const image &a, const image &b, bool luma, bool luma_601); + +} // namespace basisu |