/***************************************************************************** * * XVID MPEG-4 VIDEO CODEC * - Sum Of Absolute Difference related code - * * Copyright(C) 2001-2010 Peter Ross * 2010 Michael Militzer * * This program is free software ; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation ; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY ; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program ; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * $Id$ * ****************************************************************************/ #include "../portab.h" #include "../global.h" #include "sad.h" #include sad16FuncPtr sad16; sad8FuncPtr sad8; sad16biFuncPtr sad16bi; sad8biFuncPtr sad8bi; /* not really sad16, but no difference in prototype */ dev16FuncPtr dev16; sad16vFuncPtr sad16v; sse8Func_16bitPtr sse8_16bit; sse8Func_8bitPtr sse8_8bit; sseh8Func_16bitPtr sseh8_16bit; coeff8_energyFunc_Ptr coeff8_energy; blocksum8Func_Ptr blocksum8; sadInitFuncPtr sadInit; uint32_t sad16_c(const uint8_t * const cur, const uint8_t * const ref, const uint32_t stride, const uint32_t best_sad) { uint32_t sad = 0; uint32_t j; uint8_t const *ptr_cur = cur; uint8_t const *ptr_ref = ref; for (j = 0; j < 16; j++) { sad += abs(ptr_cur[0] - ptr_ref[0]); sad += abs(ptr_cur[1] - ptr_ref[1]); sad += abs(ptr_cur[2] - ptr_ref[2]); sad += abs(ptr_cur[3] - ptr_ref[3]); sad += abs(ptr_cur[4] - ptr_ref[4]); sad += abs(ptr_cur[5] - ptr_ref[5]); sad += abs(ptr_cur[6] - ptr_ref[6]); sad += abs(ptr_cur[7] - ptr_ref[7]); sad += abs(ptr_cur[8] - ptr_ref[8]); sad += abs(ptr_cur[9] - ptr_ref[9]); sad += abs(ptr_cur[10] - ptr_ref[10]); sad += abs(ptr_cur[11] - ptr_ref[11]); sad += abs(ptr_cur[12] - ptr_ref[12]); sad += abs(ptr_cur[13] - ptr_ref[13]); sad += abs(ptr_cur[14] - ptr_ref[14]); sad += abs(ptr_cur[15] - ptr_ref[15]); if (sad >= best_sad) return sad; ptr_cur += stride; ptr_ref += stride; } return sad; } uint32_t sad16bi_c(const uint8_t * const cur, const uint8_t * const ref1, const uint8_t * const ref2, const uint32_t stride) { uint32_t sad = 0; uint32_t i, j; uint8_t const *ptr_cur = cur; uint8_t const *ptr_ref1 = ref1; uint8_t const *ptr_ref2 = ref2; for (j = 0; j < 16; j++) { for (i = 0; i < 16; i++) { int pixel = (ptr_ref1[i] + ptr_ref2[i] + 1) / 2; sad += abs(ptr_cur[i] - pixel); } ptr_cur += stride; ptr_ref1 += stride; ptr_ref2 += stride; } return sad; } uint32_t sad8bi_c(const uint8_t * const cur, const uint8_t * const ref1, const uint8_t * const ref2, const uint32_t stride) { uint32_t sad = 0; uint32_t i, j; uint8_t const *ptr_cur = cur; uint8_t const *ptr_ref1 = ref1; uint8_t const *ptr_ref2 = ref2; for (j = 0; j < 8; j++) { for (i = 0; i < 8; i++) { int pixel = (ptr_ref1[i] + ptr_ref2[i] + 1) / 2; sad += abs(ptr_cur[i] - pixel); } ptr_cur += stride; ptr_ref1 += stride; ptr_ref2 += stride; } return sad; } uint32_t sad8_c(const uint8_t * const cur, const uint8_t * const ref, const uint32_t stride) { uint32_t sad = 0; uint32_t j; uint8_t const *ptr_cur = cur; uint8_t const *ptr_ref = ref; for (j = 0; j < 8; j++) { sad += abs(ptr_cur[0] - ptr_ref[0]); sad += abs(ptr_cur[1] - ptr_ref[1]); sad += abs(ptr_cur[2] - ptr_ref[2]); sad += abs(ptr_cur[3] - ptr_ref[3]); sad += abs(ptr_cur[4] - ptr_ref[4]); sad += abs(ptr_cur[5] - ptr_ref[5]); sad += abs(ptr_cur[6] - ptr_ref[6]); sad += abs(ptr_cur[7] - ptr_ref[7]); ptr_cur += stride; ptr_ref += stride; } return sad; } /* average deviation from mean */ uint32_t dev16_c(const uint8_t * const cur, const uint32_t stride) { uint32_t mean = 0; uint32_t dev = 0; uint32_t i, j; uint8_t const *ptr_cur = cur; for (j = 0; j < 16; j++) { for (i = 0; i < 16; i++) mean += *(ptr_cur + i); ptr_cur += stride; } mean /= (16 * 16); ptr_cur = cur; for (j = 0; j < 16; j++) { for (i = 0; i < 16; i++) dev += abs(*(ptr_cur + i) - (int32_t) mean); ptr_cur += stride; } return dev; } uint32_t sad16v_c(const uint8_t * const cur, const uint8_t * const ref, const uint32_t stride, int32_t *sad) { sad[0] = sad8(cur, ref, stride); sad[1] = sad8(cur + 8, ref + 8, stride); sad[2] = sad8(cur + 8*stride, ref + 8*stride, stride); sad[3] = sad8(cur + 8*stride + 8, ref + 8*stride + 8, stride); return sad[0]+sad[1]+sad[2]+sad[3]; } uint32_t sad32v_c(const uint8_t * const cur, const uint8_t * const ref, const uint32_t stride, int32_t *sad) { sad[0] = sad16(cur, ref, stride, 256*4096); sad[1] = sad16(cur + 16, ref + 16, stride, 256*4096); sad[2] = sad16(cur + 16*stride, ref + 16*stride, stride, 256*4096); sad[3] = sad16(cur + 16*stride + 16, ref + 16*stride + 16, stride, 256*4096); return sad[0]+sad[1]+sad[2]+sad[3]; } #define MRSAD16_CORRFACTOR 8 uint32_t mrsad16_c(const uint8_t * const cur, const uint8_t * const ref, const uint32_t stride, const uint32_t best_sad) { uint32_t sad = 0; int32_t mean = 0; uint32_t i, j; uint8_t const *ptr_cur = cur; uint8_t const *ptr_ref = ref; for (j = 0; j < 16; j++) { for (i = 0; i < 16; i++) { mean += ((int) *(ptr_cur + i) - (int) *(ptr_ref + i)); } ptr_cur += stride; ptr_ref += stride; } mean /= 256; for (j = 0; j < 16; j++) { ptr_cur -= stride; ptr_ref -= stride; for (i = 0; i < 16; i++) { sad += abs(*(ptr_cur + i) - *(ptr_ref + i) - mean); if (sad >= best_sad) { return MRSAD16_CORRFACTOR * sad; } } } return MRSAD16_CORRFACTOR * sad; } uint32_t sse8_16bit_c(const int16_t * b1, const int16_t * b2, const uint32_t stride) { int i; int sse = 0; for (i=0; i<8; i++) { sse += (b1[0] - b2[0])*(b1[0] - b2[0]); sse += (b1[1] - b2[1])*(b1[1] - b2[1]); sse += (b1[2] - b2[2])*(b1[2] - b2[2]); sse += (b1[3] - b2[3])*(b1[3] - b2[3]); sse += (b1[4] - b2[4])*(b1[4] - b2[4]); sse += (b1[5] - b2[5])*(b1[5] - b2[5]); sse += (b1[6] - b2[6])*(b1[6] - b2[6]); sse += (b1[7] - b2[7])*(b1[7] - b2[7]); b1 = (const int16_t*)((int8_t*)b1+stride); b2 = (const int16_t*)((int8_t*)b2+stride); } return(sse); } uint32_t sse8_8bit_c(const uint8_t * b1, const uint8_t * b2, const uint32_t stride) { int i; int sse = 0; for (i=0; i<8; i++) { sse += (b1[0] - b2[0])*(b1[0] - b2[0]); sse += (b1[1] - b2[1])*(b1[1] - b2[1]); sse += (b1[2] - b2[2])*(b1[2] - b2[2]); sse += (b1[3] - b2[3])*(b1[3] - b2[3]); sse += (b1[4] - b2[4])*(b1[4] - b2[4]); sse += (b1[5] - b2[5])*(b1[5] - b2[5]); sse += (b1[6] - b2[6])*(b1[6] - b2[6]); sse += (b1[7] - b2[7])*(b1[7] - b2[7]); b1 = b1+stride; b2 = b2+stride; } return(sse); } /* PSNR-HVS-M helper functions */ static const int16_t iMask_Coeff[64] = { 0, 29788, 32767, 20479, 13653, 8192, 6425, 5372, 27306, 27306, 23405, 17246, 12603, 5650, 5461, 5958, 23405, 25205, 20479, 13653, 8192, 5749, 4749, 5851, 23405, 19275, 14894, 11299, 6425, 3766, 4096, 5285, 18204, 14894, 8856, 5851, 4819, 3006, 3181, 4255, 13653, 9362, 5958, 5120, 4045, 3151, 2900, 3562, 6687, 5120, 4201, 3766, 3181, 2708, 2730, 3244, 4551, 3562, 3449, 3344, 2926, 3277, 3181, 3310 }; /* Calculate CSF weighted energy of DCT coefficients */ uint32_t coeff8_energy_c(const int16_t * dct) { int x, y; uint32_t sum_a = 0; for (y = 0; y < 8; y += 2) { for (x = 0; x < 8; x += 2) { int16_t a0 = ((dct[y*8+x]<<4) * iMask_Coeff[y*8+x]) >> 16; int16_t a1 = ((dct[y*8+x+1]<<4) * iMask_Coeff[y*8+x+1]) >> 16; int16_t a2 = ((dct[(y+1)*8+x]<<4) * iMask_Coeff[(y+1)*8+x]) >> 16; int16_t a3 = ((dct[(y+1)*8+x+1]<<4) * iMask_Coeff[(y+1)*8+x+1]) >> 16; sum_a += ((a0*a0 + a1*a1 + a2*a2 + a3*a3) >> 3); } } return sum_a; } /* Calculate MSE of DCT coeffs reduced by masking effect */ uint32_t sseh8_16bit_c(const int16_t * cur, const int16_t * ref, uint16_t mask) { int j, i; uint32_t mse_h = 0; for (j = 0; j < 8; j++) { for (i = 0; i < 8; i++) { uint32_t t = (mask * Inv_iMask_Coeff[j*8+i] + 32) >> 7; uint16_t u = abs(cur[j*8+i] - ref[j*8+i]) << 4; uint16_t thresh = (t < 65536) ? t : 65535; if (u < thresh) u = 0; /* The error is not perceivable */ else u -= thresh; u = ((u + iCSF_Round[j*8 + i]) * iCSF_Coeff[j*8 + i]) >> 16; mse_h += (uint32_t) (u * u); } } return mse_h; } /* Sums all pixels of 8x8 block */ uint32_t blocksum8_c(const uint8_t * cur, int stride, uint16_t sums[4], uint32_t squares[4]) { int i, j; uint32_t sum = 0; sums[0] = sums[1] = sums[2] = sums[3] = 0; squares[0] = squares[1] = squares[2] = squares[3] = 0; for (j = 0; j < 8; j++) { for (i = 0; i < 8; i++) { uint8_t p = cur[j*stride + i]; sums[(j>>2)*2 + (i>>2)] += p; squares[(j>>2)*2 + (i>>2)] += p*p; sum += p; } } return sum; }