1/* 2 * Copyright (C) 2009 David Conrad 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21#include "dsputil.h" 22#include "diracdsp.h" 23#include "libavcodec/x86/diracdsp_mmx.h" 24 25#define FILTER(src, stride) \ 26 ((21*((src)[ 0*stride] + (src)[1*stride]) \ 27 -7*((src)[-1*stride] + (src)[2*stride]) \ 28 +3*((src)[-2*stride] + (src)[3*stride]) \ 29 -1*((src)[-3*stride] + (src)[4*stride]) + 16) >> 5) 30 31static void dirac_hpel_filter(uint8_t *dsth, uint8_t *dstv, uint8_t *dstc, const uint8_t *src, 32 int stride, int width, int height) 33{ 34 int x, y; 35 36 for (y = 0; y < height; y++) { 37 for (x = -3; x < width+5; x++) 38 dstv[x] = av_clip_uint8(FILTER(src+x, stride)); 39 40 for (x = 0; x < width; x++) 41 dstc[x] = av_clip_uint8(FILTER(dstv+x, 1)); 42 43 for (x = 0; x < width; x++) 44 dsth[x] = av_clip_uint8(FILTER(src+x, 1)); 45 46 src += stride; 47 dsth += stride; 48 dstv += stride; 49 dstc += stride; 50 } 51} 52 53#define PIXOP_BILINEAR(PFX, OP, WIDTH) \ 54 static void ff_ ## PFX ## _dirac_pixels ## WIDTH ## _bilinear_c(uint8_t *dst, const uint8_t *src[5], int stride, int h) \ 55 { \ 56 int x; \ 57 const uint8_t *s0 = src[0]; \ 58 const uint8_t *s1 = src[1]; \ 59 const uint8_t *s2 = src[2]; \ 60 const uint8_t *s3 = src[3]; \ 61 const uint8_t *w = src[4]; \ 62 \ 63 while (h--) { \ 64 for (x = 0; x < WIDTH; x++) { \ 65 OP(dst[x], (s0[x]*w[0] + s1[x]*w[1] + s2[x]*w[2] + s3[x]*w[3] + 8) >> 4); \ 66 } \ 67 \ 68 dst += stride; \ 69 s0 += stride; \ 70 s1 += stride; \ 71 s2 += stride; \ 72 s3 += stride; \ 73 } \ 74 } 75 76#define OP_PUT(dst, val) (dst) = (val) 77#define OP_AVG(dst, val) (dst) = (((dst) + (val) + 1)>>1) 78 79PIXOP_BILINEAR(put, OP_PUT, 8) 80PIXOP_BILINEAR(put, OP_PUT, 16) 81PIXOP_BILINEAR(put, OP_PUT, 32) 82PIXOP_BILINEAR(avg, OP_AVG, 8) 83PIXOP_BILINEAR(avg, OP_AVG, 16) 84PIXOP_BILINEAR(avg, OP_AVG, 32) 85 86#define op_scale1(x) block[x] = av_clip_uint8( (block[x]*weight + (1<<(log2_denom-1))) >> log2_denom) 87#define op_scale2(x) dst[x] = av_clip_uint8( (src[x]*weights + dst[x]*weightd + (1<<(log2_denom-1))) >> log2_denom) 88 89#define DIRAC_WEIGHT(W) \ 90 static void weight_dirac_pixels ## W ## _c(uint8_t *block, int stride, int log2_denom, \ 91 int weight, int h) { \ 92 int x; \ 93 while (h--) { \ 94 for (x = 0; x < W; x++) { \ 95 op_scale1(x); \ 96 op_scale1(x+1); \ 97 } \ 98 block += stride; \ 99 } \ 100 } \ 101 static void biweight_dirac_pixels ## W ## _c(uint8_t *dst, const uint8_t *src, int stride, int log2_denom, \ 102 int weightd, int weights, int h) { \ 103 int x; \ 104 while (h--) { \ 105 for (x = 0; x < W; x++) { \ 106 op_scale2(x); \ 107 op_scale2(x+1); \ 108 } \ 109 dst += stride; \ 110 src += stride; \ 111 } \ 112 } 113 114DIRAC_WEIGHT(8) 115DIRAC_WEIGHT(16) 116DIRAC_WEIGHT(32) 117 118#define ADD_OBMC(xblen) \ 119 static void add_obmc ## xblen ## _c(uint16_t *dst, const uint8_t *src, int stride, \ 120 const uint8_t *obmc_weight, int yblen) \ 121 { \ 122 int x; \ 123 while (yblen--) { \ 124 for (x = 0; x < xblen; x += 2) { \ 125 dst[x ] += src[x ] * obmc_weight[x ]; \ 126 dst[x+1] += src[x+1] * obmc_weight[x+1]; \ 127 } \ 128 dst += stride; \ 129 src += stride; \ 130 obmc_weight += 32; \ 131 } \ 132 } 133 134ADD_OBMC(8) 135ADD_OBMC(16) 136ADD_OBMC(32) 137 138static void put_signed_rect_clamped_c(uint8_t *dst, int dst_stride, const int16_t *src, int src_stride, int width, int height) 139{ 140 int x, y; 141 for (y = 0; y < height; y++) { 142 for (x = 0; x < width; x+=4) { 143 dst[x ] = av_clip_uint8(src[x ] + 128); 144 dst[x+1] = av_clip_uint8(src[x+1] + 128); 145 dst[x+2] = av_clip_uint8(src[x+2] + 128); 146 dst[x+3] = av_clip_uint8(src[x+3] + 128); 147 } 148 dst += dst_stride; 149 src += src_stride; 150 } 151} 152 153static void add_rect_clamped_c(uint8_t *dst, const uint16_t *src, int stride, 154 const int16_t *idwt, int idwt_stride, 155 int width, int height) 156{ 157 int x, y; 158 159 for (y = 0; y < height; y++) { 160 for (x = 0; x < width; x+=2) { 161 dst[x ] = av_clip_uint8(((src[x ]+32)>>6) + idwt[x ]); 162 dst[x+1] = av_clip_uint8(((src[x+1]+32)>>6) + idwt[x+1]); 163 } 164 dst += stride; 165 src += stride; 166 idwt += idwt_stride; 167 } 168} 169 170#define PIXFUNC(PFX, WIDTH) \ 171 c->PFX ## _dirac_pixels_tab[WIDTH>>4][0] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _c; \ 172 c->PFX ## _dirac_pixels_tab[WIDTH>>4][1] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l2_c; \ 173 c->PFX ## _dirac_pixels_tab[WIDTH>>4][2] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l4_c; \ 174 c->PFX ## _dirac_pixels_tab[WIDTH>>4][3] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _bilinear_c 175 176void ff_diracdsp_init(DiracDSPContext *c) 177{ 178 c->dirac_hpel_filter = dirac_hpel_filter; 179 c->add_rect_clamped = add_rect_clamped_c; 180 c->put_signed_rect_clamped = put_signed_rect_clamped_c; 181 182 c->add_dirac_obmc[0] = add_obmc8_c; 183 c->add_dirac_obmc[1] = add_obmc16_c; 184 c->add_dirac_obmc[2] = add_obmc32_c; 185 186 c->weight_dirac_pixels_tab[0] = weight_dirac_pixels8_c; 187 c->weight_dirac_pixels_tab[1] = weight_dirac_pixels16_c; 188 c->weight_dirac_pixels_tab[2] = weight_dirac_pixels32_c; 189 c->biweight_dirac_pixels_tab[0] = biweight_dirac_pixels8_c; 190 c->biweight_dirac_pixels_tab[1] = biweight_dirac_pixels16_c; 191 c->biweight_dirac_pixels_tab[2] = biweight_dirac_pixels32_c; 192 193 PIXFUNC(put, 8); 194 PIXFUNC(put, 16); 195 PIXFUNC(put, 32); 196 PIXFUNC(avg, 8); 197 PIXFUNC(avg, 16); 198 PIXFUNC(avg, 32); 199 200 if (HAVE_MMX && HAVE_YASM) ff_diracdsp_init_mmx(c); 201} 202