66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*****************************************************************************/
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/* System Include Files */
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#include <math.h>
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#include "ih264_macros.h"
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#include "ih264_typedefs.h"
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#include "psnr.h"
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void get_sse(UWORD8 *pu1_src_luma, UWORD8 *pu1_rec_luma, UWORD8 *pu1_src_chroma,
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UWORD8 *pu1_rec_chroma, WORD32 src_strd, WORD32 rec_strd, WORD32 width, WORD32 height,
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DOUBLE pd_sse[3])
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{
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WORD32 i, j;
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for(j = 0; j < height; j++)
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{
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for(i = 0; i < width; i++)
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{
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WORD32 diff = pu1_src_luma[i] - pu1_rec_luma[i];
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pd_sse[0] += diff * diff;
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}
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pu1_src_luma += src_strd;
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pu1_rec_luma += rec_strd;
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}
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for(j = 0; j < height / 2; j++)
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{
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for(i = 0; i < width / 2; i++)
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{
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WORD32 diff = pu1_src_chroma[i * 2] - pu1_rec_chroma[i * 2];
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pd_sse[1] += diff * diff;
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diff = pu1_src_chroma[i * 2 + 1] - pu1_rec_chroma[i * 2 + 1];
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pd_sse[2] += diff * diff;
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}
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pu1_src_chroma += src_strd;
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pu1_rec_chroma += rec_strd;
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}
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}
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DOUBLE sse_to_psnr(DOUBLE samples, DOUBLE sse)
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{
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DOUBLE psnr;
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if(samples <= 0) return -1;
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if (sse<=0) return MAX_PSNR;
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psnr = 10.0 * (log10(samples) + 2*log10(255) - log10(sse));
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psnr = MIN(MAX_PSNR, psnr);
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return psnr;
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}
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