/* * Copyright (C) 2009 David Conrad * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "avcodec.h" #include "diracdsp.h" #define FILTER(src, stride) \ ((21*((src)[ 0*stride] + (src)[1*stride]) \ -7*((src)[-1*stride] + (src)[2*stride]) \ +3*((src)[-2*stride] + (src)[3*stride]) \ -1*((src)[-3*stride] + (src)[4*stride]) + 16) >> 5) static void dirac_hpel_filter(uint8_t *dsth, uint8_t *dstv, uint8_t *dstc, const uint8_t *src, int stride, int width, int height) { int x, y; for (y = 0; y < height; y++) { for (x = -3; x < width+5; x++) dstv[x] = av_clip_uint8(FILTER(src+x, stride)); for (x = 0; x < width; x++) dstc[x] = av_clip_uint8(FILTER(dstv+x, 1)); for (x = 0; x < width; x++) dsth[x] = av_clip_uint8(FILTER(src+x, 1)); src += stride; dsth += stride; dstv += stride; dstc += stride; } } #define PIXOP_BILINEAR(PFX, OP, WIDTH) \ static void ff_ ## PFX ## _dirac_pixels ## WIDTH ## _bilinear_c(uint8_t *dst, const uint8_t *src[5], int stride, int h) \ { \ int x; \ const uint8_t *s0 = src[0]; \ const uint8_t *s1 = src[1]; \ const uint8_t *s2 = src[2]; \ const uint8_t *s3 = src[3]; \ const uint8_t *w = src[4]; \ \ while (h--) { \ for (x = 0; x < WIDTH; x++) { \ OP(dst[x], (s0[x]*w[0] + s1[x]*w[1] + s2[x]*w[2] + s3[x]*w[3] + 8) >> 4); \ } \ \ dst += stride; \ s0 += stride; \ s1 += stride; \ s2 += stride; \ s3 += stride; \ } \ } #define OP_PUT(dst, val) (dst) = (val) #define OP_AVG(dst, val) (dst) = (((dst) + (val) + 1)>>1) PIXOP_BILINEAR(put, OP_PUT, 8) PIXOP_BILINEAR(put, OP_PUT, 16) PIXOP_BILINEAR(put, OP_PUT, 32) PIXOP_BILINEAR(avg, OP_AVG, 8) PIXOP_BILINEAR(avg, OP_AVG, 16) PIXOP_BILINEAR(avg, OP_AVG, 32) #define op_scale1(x) block[x] = av_clip_uint8( (block[x]*weight + (1<<(log2_denom-1))) >> log2_denom) #define op_scale2(x) dst[x] = av_clip_uint8( (src[x]*weights + dst[x]*weightd + (1<<(log2_denom-1))) >> log2_denom) #define DIRAC_WEIGHT(W) \ static void weight_dirac_pixels ## W ## _c(uint8_t *block, int stride, int log2_denom, \ int weight, int h) { \ int x; \ while (h--) { \ for (x = 0; x < W; x++) { \ op_scale1(x); \ op_scale1(x+1); \ } \ block += stride; \ } \ } \ static void biweight_dirac_pixels ## W ## _c(uint8_t *dst, const uint8_t *src, int stride, int log2_denom, \ int weightd, int weights, int h) { \ int x; \ while (h--) { \ for (x = 0; x < W; x++) { \ op_scale2(x); \ op_scale2(x+1); \ } \ dst += stride; \ src += stride; \ } \ } DIRAC_WEIGHT(8) DIRAC_WEIGHT(16) DIRAC_WEIGHT(32) #define ADD_OBMC(xblen) \ static void add_obmc ## xblen ## _c(uint16_t *dst, const uint8_t *src, int stride, \ const uint8_t *obmc_weight, int yblen) \ { \ int x; \ while (yblen--) { \ for (x = 0; x < xblen; x += 2) { \ dst[x ] += src[x ] * obmc_weight[x ]; \ dst[x+1] += src[x+1] * obmc_weight[x+1]; \ } \ dst += stride; \ src += stride; \ obmc_weight += 32; \ } \ } ADD_OBMC(8) ADD_OBMC(16) ADD_OBMC(32) static void put_signed_rect_clamped_8bit_c(uint8_t *dst, int dst_stride, const uint8_t *_src, int src_stride, int width, int height) { int x, y; int16_t *src = (int16_t *)_src; for (y = 0; y < height; y++) { for (x = 0; x < width; x+=4) { dst[x ] = av_clip_uint8(src[x ] + 128); dst[x+1] = av_clip_uint8(src[x+1] + 128); dst[x+2] = av_clip_uint8(src[x+2] + 128); dst[x+3] = av_clip_uint8(src[x+3] + 128); } dst += dst_stride; src += src_stride >> 1; } } #define PUT_SIGNED_RECT_CLAMPED(PX) \ static void put_signed_rect_clamped_ ## PX ## bit_c(uint8_t *_dst, int dst_stride, const uint8_t *_src, \ int src_stride, int width, int height) \ { \ int x, y; \ uint16_t *dst = (uint16_t *)_dst; \ int32_t *src = (int32_t *)_src; \ for (y = 0; y < height; y++) { \ for (x = 0; x < width; x+=4) { \ dst[x ] = av_clip_uintp2(src[x ] + (1U << (PX - 1)), PX); \ dst[x+1] = av_clip_uintp2(src[x+1] + (1U << (PX - 1)), PX); \ dst[x+2] = av_clip_uintp2(src[x+2] + (1U << (PX - 1)), PX); \ dst[x+3] = av_clip_uintp2(src[x+3] + (1U << (PX - 1)), PX); \ } \ dst += dst_stride >> 1; \ src += src_stride >> 2; \ } \ } PUT_SIGNED_RECT_CLAMPED(10) PUT_SIGNED_RECT_CLAMPED(12) static void add_rect_clamped_c(uint8_t *dst, const uint16_t *src, int stride, const int16_t *idwt, int idwt_stride, int width, int height) { int x, y; for (y = 0; y < height; y++) { for (x = 0; x < width; x+=2) { dst[x ] = av_clip_uint8(((src[x ]+32)>>6) + idwt[x ]); dst[x+1] = av_clip_uint8(((src[x+1]+32)>>6) + idwt[x+1]); } dst += stride; src += stride; idwt += idwt_stride; } } #define DEQUANT_SUBBAND(PX) \ static void dequant_subband_ ## PX ## _c(uint8_t *src, uint8_t *dst, ptrdiff_t stride, \ const int qf, const int qs, int tot_v, int tot_h) \ { \ int i, y; \ for (y = 0; y < tot_v; y++) { \ PX c, sign, *src_r = (PX *)src, *dst_r = (PX *)dst; \ for (i = 0; i < tot_h; i++) { \ c = *src_r++; \ sign = FFSIGN(c)*(!!c); \ c = (FFABS(c)*(unsigned)qf + qs) >> 2; \ *dst_r++ = c*sign; \ } \ src += tot_h << (sizeof(PX) >> 1); \ dst += stride; \ } \ } DEQUANT_SUBBAND(int16_t) DEQUANT_SUBBAND(int32_t) #define PIXFUNC(PFX, WIDTH) \ c->PFX ## _dirac_pixels_tab[WIDTH>>4][0] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _c; \ c->PFX ## _dirac_pixels_tab[WIDTH>>4][1] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l2_c; \ c->PFX ## _dirac_pixels_tab[WIDTH>>4][2] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l4_c; \ c->PFX ## _dirac_pixels_tab[WIDTH>>4][3] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _bilinear_c av_cold void ff_diracdsp_init(DiracDSPContext *c) { c->dirac_hpel_filter = dirac_hpel_filter; c->add_rect_clamped = add_rect_clamped_c; c->put_signed_rect_clamped[0] = put_signed_rect_clamped_8bit_c; c->put_signed_rect_clamped[1] = put_signed_rect_clamped_10bit_c; c->put_signed_rect_clamped[2] = put_signed_rect_clamped_12bit_c; c->add_dirac_obmc[0] = add_obmc8_c; c->add_dirac_obmc[1] = add_obmc16_c; c->add_dirac_obmc[2] = add_obmc32_c; c->weight_dirac_pixels_tab[0] = weight_dirac_pixels8_c; c->weight_dirac_pixels_tab[1] = weight_dirac_pixels16_c; c->weight_dirac_pixels_tab[2] = weight_dirac_pixels32_c; c->biweight_dirac_pixels_tab[0] = biweight_dirac_pixels8_c; c->biweight_dirac_pixels_tab[1] = biweight_dirac_pixels16_c; c->biweight_dirac_pixels_tab[2] = biweight_dirac_pixels32_c; c->dequant_subband[0] = c->dequant_subband[2] = dequant_subband_int16_t_c; c->dequant_subband[1] = c->dequant_subband[3] = dequant_subband_int32_t_c; PIXFUNC(put, 8); PIXFUNC(put, 16); PIXFUNC(put, 32); PIXFUNC(avg, 8); PIXFUNC(avg, 16); PIXFUNC(avg, 32); if (ARCH_X86) ff_diracdsp_init_x86(c); }