--- interpolate8x8.c 2002/09/06 17:37:07 1.5 +++ interpolate8x8.c 2003/02/11 21:56:31 1.9 @@ -1,22 +1,15 @@ /***************************************************************************** * * XVID MPEG-4 VIDEO CODEC - * - 8x8 block-based halfpel interpolation + * - 8x8 block-based halfpel interpolation - * * Copyright(C) 2002 Peter Ross * Copyright(C) 2002 MinChen * - * This program is an implementation of a part of one or more MPEG-4 - * Video tools as specified in ISO/IEC 14496-2 standard. Those intending - * to use this software module in hardware or software products are - * advised that its use may infringe existing patents or copyrights, and - * any such use would be at such party's own risk. The original - * developer of this software module and his/her company, and subsequent - * editors and their companies, will have no liability for use of this - * software or modifications or derivatives thereof. + * This file is part of XviD, a free MPEG-4 video encoder/decoder * - * 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 + * 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. * @@ -29,18 +22,49 @@ * 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 1.9 2003/02/11 21:56:31 edgomez Exp $ + * ****************************************************************************/ #include "../portab.h" #include "interpolate8x8.h" -// function pointers +/* function pointers */ INTERPOLATE8X8_PTR interpolate8x8_halfpel_h; INTERPOLATE8X8_PTR interpolate8x8_halfpel_v; INTERPOLATE8X8_PTR interpolate8x8_halfpel_hv; -// dst = interpolate(src) +/* dst = interpolate(src) */ void interpolate8x8_halfpel_h_c(uint8_t * const dst, @@ -53,11 +77,10 @@ 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]; + int32_t tot = + (int32_t) src[j * stride + i] + (int32_t) src[j * stride + i + 1]; - tot = (int32_t) ((tot + 1 - rounding) >> 1); + tot = (tot + 1 - rounding) >> 1; dst[j * stride + i] = (uint8_t) tot; } } @@ -75,7 +98,8 @@ for (j = 0; j < 8; j++) { for (i = 0; i < 8; i++) { - int16_t tot = src[j * stride + i] + src[j * stride + i + stride]; + int32_t tot = + (int32_t)src[j * stride + i] + (int32_t)src[j * stride + i + stride]; tot = ((tot + 1 - rounding) >> 1); dst[j * stride + i] = (uint8_t) tot; @@ -94,18 +118,17 @@ 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]; + 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]; tot = ((tot + 2 - rounding) >> 2); dst[j * stride + i] = (uint8_t) tot; } } } -// add by MinChen -// interpolate8x8 two pred block +/* add by MinChen */ +/* interpolate8x8 two pred block */ void interpolate8x8_c(uint8_t * const dst, const uint8_t * const src, @@ -118,156 +141,9 @@ 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); + (((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; } } } - -/************************************************************* - * 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; - } -}