| /* |
| * 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 ] + (1 << (PX - 1)), PX); \ |
| dst[x+1] = av_clip_uintp2(src[x+1] + (1 << (PX - 1)), PX); \ |
| dst[x+2] = av_clip_uintp2(src[x+2] + (1 << (PX - 1)), PX); \ |
| dst[x+3] = av_clip_uintp2(src[x+3] + (1 << (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 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; |
| |
| 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); |
| } |
