--- trunk/xvidcore/src/image/interpolate8x8.c 2003/02/15 08:39:17 850 +++ trunk/xvidcore/src/image/interpolate8x8.c 2003/02/15 15:22:19 851 @@ -1,70 +1,106 @@ -/***************************************************************************** +/************************************************************************** * - * XVID MPEG-4 VIDEO CODEC - * - 8x8 block-based halfpel interpolation - + * XVID MPEG-4 VIDEO CODEC + * 8x8 block-based halfpel interpolation * - * Copyright(C) 2002 Peter Ross - * Copyright(C) 2002 MinChen + * 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 file is part of XviD, a free MPEG-4 video encoder/decoder - * - * XviD 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 - * - * Under section 8 of the GNU General Public License, the copyright - * holders of XVID explicitly forbid distribution in the following - * countries: - * - * - Japan - * - United States of America - * - * Linking XviD statically or dynamically with other modules is making a - * combined work based on XviD. Thus, the terms and conditions of the - * GNU General Public License cover the whole combination. - * - * As a special exception, the copyright holders of XviD give you - * permission to link XviD with independent modules that communicate with - * XviD solely through the VFW1.1 and DShow interfaces, regardless of the - * license terms of these independent modules, and to copy and distribute - * the resulting combined work under terms of your choice, provided that - * every copy of the combined work is accompanied by a complete copy of - * the source code of XviD (the version of XviD used to produce the - * combined work), being distributed under the terms of the GNU General - * Public License plus this exception. An independent module is a module - * which is not derived from or based on XviD. - * - * Note that people who make modified versions of XviD are not obligated - * to grant this special exception for their modified versions; it is - * their choice whether to do so. The GNU General Public License gives - * permission to release a modified version without this exception; this - * exception also makes it possible to release a modified version which - * carries forward this exception. + * 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. * - * $Id: interpolate8x8.c,v 1.9 2003-02-11 21:56:31 edgomez Exp $ + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. * - ****************************************************************************/ + *************************************************************************/ + +/************************************************************************** + * + * History: + * + * 05.10.2002 new bilinear and qpel interpolation code - Isibaar + * 27.12.2001 modified "compensate_halfpel" + * 05.11.2001 initial version; (c)2001 peter ross + * + *************************************************************************/ + #include "../portab.h" +#include "../global.h" #include "interpolate8x8.h" -/* function pointers */ +// function pointers INTERPOLATE8X8_PTR interpolate8x8_halfpel_h; INTERPOLATE8X8_PTR interpolate8x8_halfpel_v; INTERPOLATE8X8_PTR interpolate8x8_halfpel_hv; +INTERPOLATE8X8_AVG2_PTR interpolate8x8_avg2; +INTERPOLATE8X8_AVG4_PTR interpolate8x8_avg4; + +INTERPOLATE_LOWPASS_PTR interpolate8x8_lowpass_h; +INTERPOLATE_LOWPASS_PTR interpolate8x8_lowpass_v; + +INTERPOLATE_LOWPASS_PTR interpolate16x16_lowpass_h; +INTERPOLATE_LOWPASS_PTR interpolate16x16_lowpass_v; + +INTERPOLATE_LOWPASS_HV_PTR interpolate8x8_lowpass_hv; +INTERPOLATE_LOWPASS_HV_PTR interpolate16x16_lowpass_hv; -/* dst = interpolate(src) */ +INTERPOLATE8X8_6TAP_LOWPASS_PTR interpolate8x8_6tap_lowpass_h; +INTERPOLATE8X8_6TAP_LOWPASS_PTR interpolate8x8_6tap_lowpass_v; + +void interpolate8x8_avg2_c(uint8_t *dst, const uint8_t *src1, const uint8_t *src2, const uint32_t stride, const uint32_t rounding, const uint32_t height) +{ + uint32_t i; + const int32_t round = 1 - rounding; + + for(i = 0; i < height; i++) + { + dst[0] = (src1[0] + src2[0] + round) >> 1; + dst[1] = (src1[1] + src2[1] + round) >> 1; + dst[2] = (src1[2] + src2[2] + round) >> 1; + dst[3] = (src1[3] + src2[3] + round) >> 1; + dst[4] = (src1[4] + src2[4] + round) >> 1; + dst[5] = (src1[5] + src2[5] + round) >> 1; + dst[6] = (src1[6] + src2[6] + round) >> 1; + dst[7] = (src1[7] + src2[7] + round) >> 1; + + dst += stride; + src1 += stride; + src2 += stride; + } +} + +void interpolate8x8_avg4_c(uint8_t *dst, const uint8_t *src1, const uint8_t *src2, const uint8_t *src3, const uint8_t *src4, const uint32_t stride, const uint32_t rounding) +{ + int32_t i; + const int32_t round = 2 - rounding; + + for(i = 0; i < 8; i++) + { + dst[0] = (src1[0] + src2[0] + src3[0] + src4[0] + round) >> 2; + dst[1] = (src1[1] + src2[1] + src3[1] + src4[1] + round) >> 2; + dst[2] = (src1[2] + src2[2] + src3[2] + src4[2] + round) >> 2; + dst[3] = (src1[3] + src2[3] + src3[3] + src4[3] + round) >> 2; + dst[4] = (src1[4] + src2[4] + src3[4] + src4[4] + round) >> 2; + dst[5] = (src1[5] + src2[5] + src3[5] + src4[5] + round) >> 2; + dst[6] = (src1[6] + src2[6] + src3[6] + src4[6] + round) >> 2; + dst[7] = (src1[7] + src2[7] + src3[7] + src4[7] + round) >> 2; + + dst += stride; + src1 += stride; + src2 += stride; + src3 += stride; + src4 += stride; + } +} + +// dst = interpolate(src) void interpolate8x8_halfpel_h_c(uint8_t * const dst, @@ -77,10 +113,11 @@ for (j = 0; j < 8; j++) { for (i = 0; i < 8; i++) { - int32_t tot = - (int32_t) src[j * stride + i] + (int32_t) src[j * stride + i + 1]; + int16_t tot = + (int32_t) src[j * stride + i] + (int32_t) src[j * stride + i + + 1]; - tot = (tot + 1 - rounding) >> 1; + tot = (int32_t) ((tot + 1 - rounding) >> 1); dst[j * stride + i] = (uint8_t) tot; } } @@ -98,8 +135,7 @@ for (j = 0; j < 8; j++) { for (i = 0; i < 8; i++) { - int32_t tot = - (int32_t)src[j * stride + i] + (int32_t)src[j * stride + i + stride]; + int16_t tot = src[j * stride + i] + src[j * stride + i + stride]; tot = ((tot + 1 - rounding) >> 1); dst[j * stride + i] = (uint8_t) tot; @@ -118,32 +154,270 @@ for (j = 0; j < 8; j++) { for (i = 0; i < 8; i++) { - int32_t tot = - (int32_t)src[j * stride + i] + (int32_t)src[j * stride + i + 1] + - (int32_t)src[j * stride + i + stride] + (int32_t)src[j * stride + i + stride + 1]; + int16_t tot = + src[j * stride + i] + src[j * stride + i + 1] + + src[j * stride + i + stride] + src[j * stride + i + stride + + 1]; tot = ((tot + 2 - rounding) >> 2); dst[j * stride + i] = (uint8_t) tot; } } } -/* add by MinChen */ -/* interpolate8x8 two pred block */ -void -interpolate8x8_c(uint8_t * const dst, - const uint8_t * const src, - const uint32_t x, - const uint32_t y, - const uint32_t stride) +/************************************************************* + * QPEL STUFF STARTS HERE * + *************************************************************/ + +void interpolate8x8_6tap_lowpass_h_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding) { - uint32_t i, j; + int32_t i; + uint8_t round_add = 16 - rounding; + + for(i = 0; i < 8; i++) + { + + dst[0] = CLIP((((src[-2] + src[3]) + 5 * (((src[0] + src[1])<<2) - (src[-1] + src[2])) + round_add) >> 5), 0, 255); + dst[1] = CLIP((((src[-1] + src[4]) + 5 * (((src[1] + src[2])<<2) - (src[0] + src[3])) + round_add) >> 5), 0, 255); + dst[2] = CLIP((((src[0] + src[5]) + 5 * (((src[2] + src[3])<<2) - (src[1] + src[4])) + round_add) >> 5), 0, 255); + dst[3] = CLIP((((src[1] + src[6]) + 5 * (((src[3] + src[4])<<2) - (src[2] + src[5])) + round_add) >> 5), 0, 255); + dst[4] = CLIP((((src[2] + src[7]) + 5 * (((src[4] + src[5])<<2) - (src[3] + src[6])) + round_add) >> 5), 0, 255); + dst[5] = CLIP((((src[3] + src[8]) + 5 * (((src[5] + src[6])<<2) - (src[4] + src[7])) + round_add) >> 5), 0, 255); + dst[6] = CLIP((((src[4] + src[9]) + 5 * (((src[6] + src[7])<<2) - (src[5] + src[8])) + round_add) >> 5), 0, 255); + dst[7] = CLIP((((src[5] + src[10]) + 5 * (((src[7] + src[8])<<2) - (src[6] + src[9])) + round_add) >> 5), 0, 255); + + dst += stride; + src += stride; + } +} + +void interpolate16x16_lowpass_h_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding) +{ + int32_t i; + uint8_t round_add = 16 - rounding; + + for(i = 0; i < 17; i++) + { + + dst[0] = CLIP(((7 * ((src[0]<<1) - src[2]) + 23 * src[1] + 3 * src[3] - src[4] + round_add) >> 5), 0, 255); + dst[1] = CLIP(((19 * src[1] + 20 * src[2] - src[5] + 3 * (src[4] - src[0] - (src[3]<<1)) + round_add) >> 5), 0, 255); + dst[2] = CLIP(((20 * (src[2] + src[3]) + (src[0]<<1) + 3 * (src[5] - ((src[1] + src[4])<<1)) - src[6] + round_add) >> 5), 0, 255); + + dst[3] = CLIP(((20 * (src[3] + src[4]) + 3 * ((src[6] + src[1]) - ((src[2] + src[5])<<1)) - (src[0] + src[7]) + round_add) >> 5), 0, 255); + dst[4] = CLIP(((20 * (src[4] + src[5]) - 3 * (((src[3] + src[6])<<1) - (src[2] + src[7])) - (src[1] + src[8]) + round_add) >> 5), 0, 255); + dst[5] = CLIP(((20 * (src[5] + src[6]) - 3 * (((src[4] + src[7])<<1) - (src[3] + src[8])) - (src[2] + src[9]) + round_add) >> 5), 0, 255); + dst[6] = CLIP(((20 * (src[6] + src[7]) - 3 * (((src[5] + src[8])<<1) - (src[4] + src[9])) - (src[3] + src[10]) + round_add) >> 5), 0, 255); + dst[7] = CLIP(((20 * (src[7] + src[8]) - 3 * (((src[6] + src[9])<<1) - (src[5] + src[10])) - (src[4] + src[11]) + round_add) >> 5), 0, 255); + dst[8] = CLIP(((20 * (src[8] + src[9]) - 3 * (((src[7] + src[10])<<1) - (src[6] + src[11])) - (src[5] + src[12]) + round_add) >> 5), 0, 255); + dst[9] = CLIP(((20 * (src[9] + src[10]) - 3 * (((src[8] + src[11])<<1) - (src[7] + src[12])) - (src[6] + src[13]) + round_add) >> 5), 0, 255); + dst[10] = CLIP(((20 * (src[10] + src[11]) - 3 * (((src[9] + src[12])<<1) - (src[8] + src[13])) - (src[7] + src[14]) + round_add) >> 5), 0, 255); + dst[11] = CLIP(((20 * (src[11] + src[12]) - 3 * (((src[10] + src[13])<<1) - (src[9] + src[14])) - (src[8] + src[15]) + round_add) >> 5), 0, 255); + dst[12] = CLIP(((20 * (src[12] + src[13]) - 3 * (((src[11] + src[14])<<1) - (src[10] + src[15])) - (src[9] + src[16]) + round_add) >> 5), 0, 255); + + dst[13] = CLIP(((20 * (src[13] + src[14]) + (src[16]<<1) + 3 * (src[11] - ((src[12] + src[15]) << 1)) - src[10] + round_add) >> 5), 0, 255); + dst[14] = CLIP(((19 * src[15] + 20 * src[14] + 3 * (src[12] - src[16] - (src[13] << 1)) - src[11] + round_add) >> 5), 0, 255); + dst[15] = CLIP(((23 * src[15] + 7 * ((src[16]<<1) - src[14]) + 3 * src[13] - src[12] + round_add) >> 5), 0, 255); + + dst += stride; + src += stride; + } +} + +void interpolate8x8_lowpass_h_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding) +{ + int32_t i; + uint8_t round_add = 16 - rounding; + + for(i = 0; i < 9; i++) + { + + dst[0] = CLIP(((7 * ((src[0]<<1) - src[2]) + 23 * src[1] + 3 * src[3] - src[4] + round_add) >> 5), 0, 255); + dst[1] = CLIP(((19 * src[1] + 20 * src[2] - src[5] + 3 * (src[4] - src[0] - (src[3]<<1)) + round_add) >> 5), 0, 255); + dst[2] = CLIP(((20 * (src[2] + src[3]) + (src[0]<<1) + 3 * (src[5] - ((src[1] + src[4])<<1)) - src[6] + round_add) >> 5), 0, 255); + dst[3] = CLIP(((20 * (src[3] + src[4]) + 3 * ((src[6] + src[1]) - ((src[2] + src[5])<<1)) - (src[0] + src[7]) + round_add) >> 5), 0, 255); + dst[4] = CLIP(((20 * (src[4] + src[5]) - 3 * (((src[3] + src[6])<<1) - (src[2] + src[7])) - (src[1] + src[8]) + round_add) >> 5), 0, 255); + dst[5] = CLIP(((20 * (src[5] + src[6]) + (src[8]<<1) + 3 * (src[3] - ((src[4] + src[7]) << 1)) - src[2] + round_add) >> 5), 0, 255); + dst[6] = CLIP(((19 * src[7] + 20 * src[6] + 3 * (src[4] - src[8] - (src[5] << 1)) - src[3] + round_add) >> 5), 0, 255); + dst[7] = CLIP(((23 * src[7] + 7 * ((src[8]<<1) - src[6]) + 3 * src[5] - src[4] + round_add) >> 5), 0, 255); + + dst += stride; + src += stride; + } +} + +void interpolate8x8_6tap_lowpass_v_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding) +{ + int32_t i; + uint8_t round_add = 16 - rounding; + + for(i = 0; i < 8; i++) + { + int32_t src_2 = src[-2*stride]; + int32_t src_1 = src[-stride]; + int32_t src0 = src[0]; + int32_t src1 = src[stride]; + int32_t src2 = src[2 * stride]; + int32_t src3 = src[3 * stride]; + int32_t src4 = src[4 * stride]; + int32_t src5 = src[5 * stride]; + int32_t src6 = src[6 * stride]; + int32_t src7 = src[7 * stride]; + int32_t src8 = src[8 * stride]; + int32_t src9 = src[9 * stride]; + int32_t src10 = src[10 * stride]; + + dst[0] = CLIP((((src_2 + src3) + 5 * (((src0 + src1)<<2) - (src_1 + src2)) + round_add) >> 5), 0, 255); + dst[stride] = CLIP((((src_1 + src4) + 5 * (((src1 + src2)<<2) - (src0 + src3)) + round_add) >> 5), 0, 255); + dst[2 * stride] = CLIP((((src0 + src5) + 5 * (((src2 + src3)<<2) - (src1 + src4)) + round_add) >> 5), 0, 255); + dst[3 * stride] = CLIP((((src1 + src6) + 5 * (((src3 + src4)<<2) - (src2 + src5)) + round_add) >> 5), 0, 255); + dst[4 * stride] = CLIP((((src2 + src7) + 5 * (((src4 + src5)<<2) - (src3 + src6)) + round_add) >> 5), 0, 255); + dst[5 * stride] = CLIP((((src3 + src8) + 5 * (((src5 + src6)<<2) - (src4 + src7)) + round_add) >> 5), 0, 255); + dst[6 * stride] = CLIP((((src4 + src9) + 5 * (((src6 + src7)<<2) - (src5 + src8)) + round_add) >> 5), 0, 255); + dst[7 * stride] = CLIP((((src5 + src10) + 5 * (((src7 + src8)<<2) - (src6 + src9)) + round_add) >> 5), 0, 255); + + dst++; + src++; + } +} + +void interpolate16x16_lowpass_v_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding) +{ + int32_t i; + uint8_t round_add = 16 - rounding; + + for(i = 0; i < 17; i++) + { + int32_t src0 = src[0]; + int32_t src1 = src[stride]; + int32_t src2 = src[2 * stride]; + int32_t src3 = src[3 * stride]; + int32_t src4 = src[4 * stride]; + int32_t src5 = src[5 * stride]; + int32_t src6 = src[6 * stride]; + int32_t src7 = src[7 * stride]; + int32_t src8 = src[8 * stride]; + int32_t src9 = src[9 * stride]; + int32_t src10 = src[10 * stride]; + int32_t src11 = src[11 * stride]; + int32_t src12 = src[12 * stride]; + int32_t src13 = src[13 * stride]; + int32_t src14 = src[14 * stride]; + int32_t src15 = src[15 * stride]; + int32_t src16 = src[16 * stride]; + + + dst[0] = CLIP(((7 * ((src0<<1) - src2) + 23 * src1 + 3 * src3 - src4 + round_add) >> 5), 0, 255); + dst[stride] = CLIP(((19 * src1 + 20 * src2 - src5 + 3 * (src4 - src0 - (src3<<1)) + round_add) >> 5), 0, 255); + dst[2*stride] = CLIP(((20 * (src2 + src3) + (src0<<1) + 3 * (src5 - ((src1 + src4)<<1)) - src6 + round_add) >> 5), 0, 255); + + dst[3*stride] = CLIP(((20 * (src3 + src4) + 3 * ((src6 + src1) - ((src2 + src5)<<1)) - (src0 + src7) + round_add) >> 5), 0, 255); + dst[4*stride] = CLIP(((20 * (src4 + src5) - 3 * (((src3 + src6)<<1) - (src2 + src7)) - (src1 + src8) + round_add) >> 5), 0, 255); + dst[5*stride] = CLIP(((20 * (src5 + src6) - 3 * (((src4 + src7)<<1) - (src3 + src8)) - (src2 + src9) + round_add) >> 5), 0, 255); + dst[6*stride] = CLIP(((20 * (src6 + src7) - 3 * (((src5 + src8)<<1) - (src4 + src9)) - (src3 + src10) + round_add) >> 5), 0, 255); + dst[7*stride] = CLIP(((20 * (src7 + src8) - 3 * (((src6 + src9)<<1) - (src5 + src10)) - (src4 + src11) + round_add) >> 5), 0, 255); + dst[8*stride] = CLIP(((20 * (src8 + src9) - 3 * (((src7 + src10)<<1) - (src6 + src11)) - (src5 + src12) + round_add) >> 5), 0, 255); + dst[9*stride] = CLIP(((20 * (src9 + src10) - 3 * (((src8 + src11)<<1) - (src7 + src12)) - (src6 + src13) + round_add) >> 5), 0, 255); + dst[10*stride] = CLIP(((20 * (src10 + src11) - 3 * (((src9 + src12)<<1) - (src8 + src13)) - (src7 + src14) + round_add) >> 5), 0, 255); + dst[11*stride] = CLIP(((20 * (src11 + src12) - 3 * (((src10 + src13)<<1) - (src9 + src14)) - (src8 + src15) + round_add) >> 5), 0, 255); + dst[12*stride] = CLIP(((20 * (src12 + src13) - 3 * (((src11 + src14)<<1) - (src10 + src15)) - (src9 + src16) + round_add) >> 5), 0, 255); + + dst[13*stride] = CLIP(((20 * (src13 + src14) + (src16<<1) + 3 * (src11 - ((src12 + src15) << 1)) - src10 + round_add) >> 5), 0, 255); + dst[14*stride] = CLIP(((19 * src15 + 20 * src14 + 3 * (src12 - src16 - (src13 << 1)) - src11 + round_add) >> 5), 0, 255); + dst[15*stride] = CLIP(((23 * src15 + 7 * ((src16<<1) - src14) + 3 * src13 - src12 + round_add) >> 5), 0, 255); + + dst++; + src++; + } +} + +void interpolate8x8_lowpass_v_c(uint8_t *dst, uint8_t *src, int32_t stride, int32_t rounding) +{ + int32_t i; + uint8_t round_add = 16 - rounding; + + for(i = 0; i < 9; i++) + { + int32_t src0 = src[0]; + int32_t src1 = src[stride]; + int32_t src2 = src[2 * stride]; + int32_t src3 = src[3 * stride]; + int32_t src4 = src[4 * stride]; + int32_t src5 = src[5 * stride]; + int32_t src6 = src[6 * stride]; + int32_t src7 = src[7 * stride]; + int32_t src8 = src[8 * stride]; + + dst[0] = CLIP(((7 * ((src0<<1) - src2) + 23 * src1 + 3 * src3 - src4 + round_add) >> 5), 0, 255); + dst[stride] = CLIP(((19 * src1 + 20 * src2 - src5 + 3 * (src4 - src0 - (src3 << 1)) + round_add) >> 5), 0, 255); + dst[2 * stride] = CLIP(((20 * (src2 + src3) + (src0<<1) + 3 * (src5 - ((src1 + src4) <<1 )) - src6 + round_add) >> 5), 0, 255); + dst[3 * stride] = CLIP(((20 * (src3 + src4) + 3 * ((src6 + src1) - ((src2 + src5)<<1)) - (src0 + src7) + round_add) >> 5), 0, 255); + dst[4 * stride] = CLIP(((20 * (src4 + src5) + 3 * ((src2 + src7) - ((src3 + src6)<<1)) - (src1 + src8) + round_add) >> 5), 0, 255); + dst[5 * stride] = CLIP(((20 * (src5 + src6) + (src8<<1) + 3 * (src3 - ((src4 + src7) << 1)) - src2 + round_add) >> 5), 0, 255); + dst[6 * stride] = CLIP(((19 * src7 + 20 * src6 - src3 + 3 * (src4 - src8 - (src5 << 1)) + round_add) >> 5), 0, 255); + dst[7 * stride] = CLIP(((7 * ((src8<<1) - src6) + 23 * src7 + 3 * src5 - src4 + round_add) >> 5), 0, 255); + + dst++; + src++; + } +} + +void interpolate16x16_lowpass_hv_c(uint8_t *dst1, uint8_t *dst2, uint8_t *src, int32_t stride, int32_t rounding) +{ + int32_t i; + uint8_t round_add = 16 - rounding; + uint8_t *h_ptr = dst2; + + for(i = 0; i < 17; i++) + { + + h_ptr[0] = CLIP(((7 * ((src[0]<<1) - src[2]) + 23 * src[1] + 3 * src[3] - src[4] + round_add) >> 5), 0, 255); + h_ptr[1] = CLIP(((19 * src[1] + 20 * src[2] - src[5] + 3 * (src[4] - src[0] - (src[3]<<1)) + round_add) >> 5), 0, 255); + h_ptr[2] = CLIP(((20 * (src[2] + src[3]) + (src[0]<<1) + 3 * (src[5] - ((src[1] + src[4])<<1)) - src[6] + round_add) >> 5), 0, 255); + + h_ptr[3] = CLIP(((20 * (src[3] + src[4]) + 3 * ((src[6] + src[1]) - ((src[2] + src[5])<<1)) - (src[0] + src[7]) + round_add) >> 5), 0, 255); + h_ptr[4] = CLIP(((20 * (src[4] + src[5]) - 3 * (((src[3] + src[6])<<1) - (src[2] + src[7])) - (src[1] + src[8]) + round_add) >> 5), 0, 255); + h_ptr[5] = CLIP(((20 * (src[5] + src[6]) - 3 * (((src[4] + src[7])<<1) - (src[3] + src[8])) - (src[2] + src[9]) + round_add) >> 5), 0, 255); + h_ptr[6] = CLIP(((20 * (src[6] + src[7]) - 3 * (((src[5] + src[8])<<1) - (src[4] + src[9])) - (src[3] + src[10]) + round_add) >> 5), 0, 255); + h_ptr[7] = CLIP(((20 * (src[7] + src[8]) - 3 * (((src[6] + src[9])<<1) - (src[5] + src[10])) - (src[4] + src[11]) + round_add) >> 5), 0, 255); + h_ptr[8] = CLIP(((20 * (src[8] + src[9]) - 3 * (((src[7] + src[10])<<1) - (src[6] + src[11])) - (src[5] + src[12]) + round_add) >> 5), 0, 255); + h_ptr[9] = CLIP(((20 * (src[9] + src[10]) - 3 * (((src[8] + src[11])<<1) - (src[7] + src[12])) - (src[6] + src[13]) + round_add) >> 5), 0, 255); + h_ptr[10] = CLIP(((20 * (src[10] + src[11]) - 3 * (((src[9] + src[12])<<1) - (src[8] + src[13])) - (src[7] + src[14]) + round_add) >> 5), 0, 255); + h_ptr[11] = CLIP(((20 * (src[11] + src[12]) - 3 * (((src[10] + src[13])<<1) - (src[9] + src[14])) - (src[8] + src[15]) + round_add) >> 5), 0, 255); + h_ptr[12] = CLIP(((20 * (src[12] + src[13]) - 3 * (((src[11] + src[14])<<1) - (src[10] + src[15])) - (src[9] + src[16]) + round_add) >> 5), 0, 255); + + h_ptr[13] = CLIP(((20 * (src[13] + src[14]) + (src[16]<<1) + 3 * (src[11] - ((src[12] + src[15]) << 1)) - src[10] + round_add) >> 5), 0, 255); + h_ptr[14] = CLIP(((19 * src[15] + 20 * src[14] + 3 * (src[12] - src[16] - (src[13] << 1)) - src[11] + round_add) >> 5), 0, 255); + h_ptr[15] = CLIP(((23 * src[15] + 7 * ((src[16]<<1) - src[14]) + 3 * src[13] - src[12] + round_add) >> 5), 0, 255); + + h_ptr += stride; + src += stride; + } + + interpolate16x16_lowpass_v_c(dst1, dst2, stride, rounding); + +} + +void interpolate8x8_lowpass_hv_c(uint8_t *dst1, uint8_t *dst2, uint8_t *src, int32_t stride, int32_t rounding) +{ + int32_t i; + uint8_t round_add = 16 - rounding; + uint8_t *h_ptr = dst2; + + for(i = 0; i < 9; i++) + { + + h_ptr[0] = CLIP(((7 * ((src[0]<<1) - src[2]) + 23 * src[1] + 3 * src[3] - src[4] + round_add) >> 5), 0, 255); + h_ptr[1] = CLIP(((19 * src[1] + 20 * src[2] - src[5] + 3 * (src[4] - src[0] - (src[3]<<1)) + round_add) >> 5), 0, 255); + h_ptr[2] = CLIP(((20 * (src[2] + src[3]) + (src[0]<<1) + 3 * (src[5] - ((src[1] + src[4])<<1)) - src[6] + round_add) >> 5), 0, 255); + h_ptr[3] = CLIP(((20 * (src[3] + src[4]) + 3 * ((src[6] + src[1]) - ((src[2] + src[5])<<1)) - (src[0] + src[7]) + round_add) >> 5), 0, 255); + h_ptr[4] = CLIP(((20 * (src[4] + src[5]) - 3 * (((src[3] + src[6])<<1) - (src[2] + src[7])) - (src[1] + src[8]) + round_add) >> 5), 0, 255); + h_ptr[5] = CLIP(((20 * (src[5] + src[6]) + (src[8]<<1) + 3 * (src[3] - ((src[4] + src[7]) << 1)) - src[2] + round_add) >> 5), 0, 255); + h_ptr[6] = CLIP(((19 * src[7] + 20 * src[6] + 3 * (src[4] - src[8] - (src[5] << 1)) - src[3] + round_add) >> 5), 0, 255); + h_ptr[7] = CLIP(((23 * src[7] + 7 * ((src[8]<<1) - src[6]) + 3 * src[5] - src[4] + round_add) >> 5), 0, 255); + + h_ptr += stride; + src += stride; + } + + interpolate8x8_lowpass_v_c(dst1, dst2, stride, rounding); - for (j = 0; j < 8; j++) { - for (i = 0; i < 8; i++) { - int32_t tot = - (((int32_t)src[(y + j) * stride + x + i] + - (int32_t)dst[(y + j) * stride + x + i] + 1) >> 1); - dst[(y + j) * stride + x + i] = (uint8_t) tot; - } - } }