/***************************************************************************** * * XVID MPEG-4 VIDEO CODEC * - 8x8 block-based halfpel interpolation - * * Copyright(C) 2002 Peter Ross * Copyright(C) 2002 MinChen * * 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. * * $Id: interpolate8x8.c,v 1.7 2002-11-26 23:44:10 edgomez Exp $ * ****************************************************************************/ #include "../portab.h" #include "interpolate8x8.h" /* function pointers */ INTERPOLATE8X8_PTR interpolate8x8_halfpel_h; INTERPOLATE8X8_PTR interpolate8x8_halfpel_v; INTERPOLATE8X8_PTR interpolate8x8_halfpel_hv; /* dst = interpolate(src) */ void interpolate8x8_halfpel_h_c(uint8_t * const dst, const uint8_t * const src, const uint32_t stride, const uint32_t rounding) { uint32_t i, j; for (j = 0; j < 8; j++) { for (i = 0; i < 8; i++) { int16_t tot = (int32_t) src[j * stride + i] + (int32_t) src[j * stride + i + 1]; tot = (int32_t) ((tot + 1 - rounding) >> 1); dst[j * stride + i] = (uint8_t) tot; } } } void interpolate8x8_halfpel_v_c(uint8_t * const dst, const uint8_t * const src, const uint32_t stride, const uint32_t rounding) { uint32_t i, j; for (j = 0; j < 8; j++) { for (i = 0; i < 8; i++) { int16_t tot = src[j * stride + i] + src[j * stride + i + stride]; tot = ((tot + 1 - rounding) >> 1); dst[j * stride + i] = (uint8_t) tot; } } } void interpolate8x8_halfpel_hv_c(uint8_t * const dst, const uint8_t * const src, const uint32_t stride, const uint32_t rounding) { uint32_t i, j; for (j = 0; j < 8; j++) { for (i = 0; i < 8; i++) { 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) { uint32_t i, j; for (j = 0; j < 8; j++) { for (i = 0; i < 8; i++) { int32_t tot = ((src[(y + j) * stride + x + i] + dst[(y + j) * stride + x + i] + 1) >> 1); dst[(y + j) * stride + x + i] = (uint8_t) tot; } } } /************************************************************* * QPEL STUFF STARTS HERE * *************************************************************/ #define CLIP(X,A,B) (X < A) ? (A) : ((X > B) ? (B) : (X)) void interpolate8x8_lowpass_h(uint8_t *dst, uint8_t *src, int32_t dst_stride, int32_t src_stride, int32_t rounding) { int32_t i; for(i = 0; i < 8; i++) { dst[0] = CLIP((((src[0] + src[1]) * 160 - (src[0] + src[2]) * 48 + (src[1] + src[3]) * 24 - (src[2] + src[4]) * 8 + (128 - rounding)) / 256), 0, 255); dst[1] = CLIP((((src[1] + src[2]) * 160 - (src[0] + src[3]) * 48 + (src[0] + src[4]) * 24 - (src[1] + src[5]) * 8 + (128 - rounding)) / 256), 0, 255); dst[2] = CLIP((((src[2] + src[3]) * 160 - (src[1] + src[4]) * 48 + (src[0] + src[5]) * 24 - (src[0] + src[6]) * 8 + (128 - rounding)) / 256), 0, 255); dst[3] = CLIP((((src[3] + src[4]) * 160 - (src[2] + src[5]) * 48 + (src[1] + src[6]) * 24 - (src[0] + src[7]) * 8 + (128 - rounding)) / 256), 0, 255); dst[4] = CLIP((((src[4] + src[5]) * 160 - (src[3] + src[6]) * 48 + (src[2] + src[7]) * 24 - (src[1] + src[8]) * 8 + (128 - rounding)) / 256), 0, 255); dst[5] = CLIP((((src[5] + src[6]) * 160 - (src[4] + src[7]) * 48 + (src[3] + src[8]) * 24 - (src[2] + src[8]) * 8 + (128 - rounding)) / 256), 0, 255); dst[6] = CLIP((((src[6] + src[7]) * 160 - (src[5] + src[8]) * 48 + (src[4] + src[8]) * 24 - (src[3] + src[7]) * 8 + (128 - rounding)) / 256), 0, 255); dst[7] = CLIP((((src[7] + src[8]) * 160 - (src[6] + src[8]) * 48 + (src[5] + src[7]) * 24 - (src[4] + src[6]) * 8 + (128 - rounding)) / 256), 0, 255); dst += dst_stride; src += src_stride; } } void interpolate8x8_lowpass_v(uint8_t *dst, uint8_t *src, int32_t dst_stride, int32_t src_stride, int32_t rounding) { int32_t i; for(i = 0; i < 8; i++) { int32_t src0 = src[0]; int32_t src1 = src[src_stride]; int32_t src2 = src[2 * src_stride]; int32_t src3 = src[3 * src_stride]; int32_t src4 = src[4 * src_stride]; int32_t src5 = src[5 * src_stride]; int32_t src6 = src[6 * src_stride]; int32_t src7 = src[7 * src_stride]; int32_t src8 = src[8 * src_stride]; dst[0] = CLIP((((src0 + src1) * 160 - (src0 + src2) * 48 + (src1 + src3) * 24 - (src2 + src4) * 8 + (128 - rounding)) / 256), 0, 255); dst[dst_stride] = CLIP((((src1 + src2) * 160 - (src0 + src3) * 48 + (src0 + src4) * 24 - (src1 + src5) * 8 + (128 - rounding)) / 256), 0, 255); dst[2 * dst_stride] = CLIP((((src2 + src3) * 160 - (src1 + src4) * 48 + (src0 + src5) * 24 - (src0 + src6) * 8 + (128 - rounding)) / 256), 0, 255); dst[3 * dst_stride] = CLIP((((src3 + src4) * 160 - (src2 + src5) * 48 + (src1 + src6) * 24 - (src0 + src7) * 8 + (128 - rounding)) / 256), 0, 255); dst[4 * dst_stride] = CLIP((((src4 + src5) * 160 - (src3 + src6) * 48 + (src2 + src7) * 24 - (src1 + src8) * 8 + (128 - rounding)) / 256), 0, 255); dst[5 * dst_stride] = CLIP((((src5 + src6) * 160 - (src4 + src7) * 48 + (src3 + src8) * 24 - (src2 + src8) * 8 + (128 - rounding)) / 256), 0, 255); dst[6 * dst_stride] = CLIP((((src6 + src7) * 160 - (src5 + src8) * 48 + (src4 + src8) * 24 - (src3 + src7) * 8 + (128 - rounding)) / 256), 0, 255); dst[7 * dst_stride] = CLIP((((src7 + src8) * 160 - (src6 + src8) * 48 + (src5 + src7) * 24 - (src4 + src6) * 8 + (128 - rounding)) / 256), 0, 255); dst++; src++; } } void interpolate8x8_lowpass_hv(uint8_t *dst1, uint8_t *dst2, uint8_t *src, int32_t dst1_stride, int32_t dst2_stride, int32_t src_stride, int32_t rounding) { uint8_t data[72]; int32_t i; for(i = 0; i < 9; i++) { dst2[0] = data[8 * i + 0] = CLIP((((src[0] + src[1]) * 160 - (src[0] + src[2]) * 48 + (src[1] + src[3]) * 24 - (src[2] + src[4]) * 8 + (128 - rounding)) / 256), 0, 255); dst2[1] = data[8 * i + 1] = CLIP((((src[1] + src[2]) * 160 - (src[0] + src[3]) * 48 + (src[0] + src[4]) * 24 - (src[1] + src[5]) * 8 + (128 - rounding)) / 256), 0, 255); dst2[2] = data[8 * i + 2] = CLIP((((src[2] + src[3]) * 160 - (src[1] + src[4]) * 48 + (src[0] + src[5]) * 24 - (src[0] + src[6]) * 8 + (128 - rounding)) / 256), 0, 255); dst2[3] = data[8 * i + 3] = CLIP((((src[3] + src[4]) * 160 - (src[2] + src[5]) * 48 + (src[1] + src[6]) * 24 - (src[0] + src[7]) * 8 + (128 - rounding)) / 256), 0, 255); dst2[4] = data[8 * i + 4] = CLIP((((src[4] + src[5]) * 160 - (src[3] + src[6]) * 48 + (src[2] + src[7]) * 24 - (src[1] + src[8]) * 8 + (128 - rounding)) / 256), 0, 255); dst2[5] = data[8 * i + 5] = CLIP((((src[5] + src[6]) * 160 - (src[4] + src[7]) * 48 + (src[3] + src[8]) * 24 - (src[2] + src[8]) * 8 + (128 - rounding)) / 256), 0, 255); dst2[6] = data[8 * i + 6] = CLIP((((src[6] + src[7]) * 160 - (src[5] + src[8]) * 48 + (src[4] + src[8]) * 24 - (src[3] + src[7]) * 8 + (128 - rounding)) / 256), 0, 255); dst2[7] = data[8 * i + 7] = CLIP((((src[7] + src[8]) * 160 - (src[6] + src[8]) * 48 + (src[5] + src[7]) * 24 - (src[4] + src[6]) * 8 + (128 - rounding)) / 256), 0, 255); src += src_stride; dst2 += dst2_stride; } for(i = 0; i < 8; i++) { int32_t src0 = data[i]; int32_t src1 = data[8 + i]; int32_t src2 = data[2 * 8 + i]; int32_t src3 = data[3 * 8 + i]; int32_t src4 = data[4 * 8 + i]; int32_t src5 = data[5 * 8 + i]; int32_t src6 = data[6 * 8 + i]; int32_t src7 = data[7 * 8 + i]; int32_t src8 = data[8 * 8 + i]; dst1[0] = CLIP((((src0 + src1) * 160 - (src0 + src2) * 48 + (src1 + src3) * 24 - (src2 + src4) * 8 + (128 - rounding)) / 256), 0, 255); dst1[dst1_stride] = CLIP((((src1 + src2) * 160 - (src0 + src3) * 48 + (src0 + src4) * 24 - (src1 + src5) * 8 + (128 - rounding)) / 256), 0, 255); dst1[2 * dst1_stride] = CLIP((((src2 + src3) * 160 - (src1 + src4) * 48 + (src0 + src5) * 24 - (src0 + src6) * 8 + (128 - rounding)) / 256), 0, 255); dst1[3 * dst1_stride] = CLIP((((src3 + src4) * 160 - (src2 + src5) * 48 + (src1 + src6) * 24 - (src0 + src7) * 8 + (128 - rounding)) / 256), 0, 255); dst1[4 * dst1_stride] = CLIP((((src4 + src5) * 160 - (src3 + src6) * 48 + (src2 + src7) * 24 - (src1 + src8) * 8 + (128 - rounding)) / 256), 0, 255); dst1[5 * dst1_stride] = CLIP((((src5 + src6) * 160 - (src4 + src7) * 48 + (src3 + src8) * 24 - (src2 + src8) * 8 + (128 - rounding)) / 256), 0, 255); dst1[6 * dst1_stride] = CLIP((((src6 + src7) * 160 - (src5 + src8) * 48 + (src4 + src8) * 24 - (src3 + src7) * 8 + (128 - rounding)) / 256), 0, 255); dst1[7 * dst1_stride] = CLIP((((src7 + src8) * 160 - (src6 + src8) * 48 + (src5 + src7) * 24 - (src4 + src6) * 8 + (128 - rounding)) / 256), 0, 255); dst1++; } } void interpolate8x8_bilinear2(uint8_t *dst, uint8_t *src1, uint8_t *src2, int32_t dst_stride, int32_t src_stride, int32_t rounding) { int32_t i; for(i = 0; i < 8; i++) { dst[0] = (src1[0] + src2[0] + (1 - rounding)) >> 1; dst[1] = (src1[1] + src2[1] + (1 - rounding)) >> 1; dst[2] = (src1[2] + src2[2] + (1 - rounding)) >> 1; dst[3] = (src1[3] + src2[3] + (1 - rounding)) >> 1; dst[4] = (src1[4] + src2[4] + (1 - rounding)) >> 1; dst[5] = (src1[5] + src2[5] + (1 - rounding)) >> 1; dst[6] = (src1[6] + src2[6] + (1 - rounding)) >> 1; dst[7] = (src1[7] + src2[7] + (1 - rounding)) >> 1; dst += dst_stride; src1 += src_stride; src2 += 8; } } void interpolate8x8_bilinear4(uint8_t *dst, uint8_t *src1, uint8_t *src2, uint8_t *src3, uint8_t *src4, int32_t stride, int32_t rounding) { int32_t i; for(i = 0; i < 8; i++) { dst[0] = (src1[0] + src2[0] + src3[0] + src4[0] + (2 - rounding)) >> 2; dst[1] = (src1[1] + src2[1] + src3[1] + src4[1] + (2 - rounding)) >> 2; dst[2] = (src1[2] + src2[2] + src3[2] + src4[2] + (2 - rounding)) >> 2; dst[3] = (src1[3] + src2[3] + src3[3] + src4[3] + (2 - rounding)) >> 2; dst[4] = (src1[4] + src2[4] + src3[4] + src4[4] + (2 - rounding)) >> 2; dst[5] = (src1[5] + src2[5] + src3[5] + src4[5] + (2 - rounding)) >> 2; dst[6] = (src1[6] + src2[6] + src3[6] + src4[6] + (2 - rounding)) >> 2; dst[7] = (src1[7] + src2[7] + src3[7] + src4[7] + (2 - rounding)) >> 2; dst += stride; src1 += stride; src2 += 8; src3 += 8; src4 += 8; } }