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by Sérgio Benjamim
FFmpeg 2.7.1 source for ppsspp. |
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/*
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* Copyright (C) 2009 David Conrad
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "avcodec.h" |
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#include "diracdsp.h" |
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#include "libavcodec/x86/diracdsp_mmx.h" |
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#define FILTER(src, stride) \
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((21*((src)[ 0*stride] + (src)[1*stride]) \
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-7*((src)[-1*stride] + (src)[2*stride]) \
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+3*((src)[-2*stride] + (src)[3*stride]) \
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-1*((src)[-3*stride] + (src)[4*stride]) + 16) >> 5)
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static void dirac_hpel_filter(uint8_t *dsth, uint8_t *dstv, uint8_t *dstc, const uint8_t *src, |
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int stride, int width, int height) |
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{
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int x, y; |
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for (y = 0; y < height; y++) { |
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for (x = -3; x < width+5; x++) |
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dstv[x] = av_clip_uint8(FILTER(src+x, stride)); |
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for (x = 0; x < width; x++) |
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dstc[x] = av_clip_uint8(FILTER(dstv+x, 1)); |
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for (x = 0; x < width; x++) |
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dsth[x] = av_clip_uint8(FILTER(src+x, 1)); |
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src += stride; |
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dsth += stride; |
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dstv += stride; |
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dstc += stride; |
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}
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}
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#define PIXOP_BILINEAR(PFX, OP, WIDTH) \
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static void ff_ ## PFX ## _dirac_pixels ## WIDTH ## _bilinear_c(uint8_t *dst, const uint8_t *src[5], int stride, int h) \
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{ \
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int x; \
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const uint8_t *s0 = src[0]; \
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const uint8_t *s1 = src[1]; \
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const uint8_t *s2 = src[2]; \
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const uint8_t *s3 = src[3]; \
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const uint8_t *w = src[4]; \
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\
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while (h--) { \
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for (x = 0; x < WIDTH; x++) { \
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OP(dst[x], (s0[x]*w[0] + s1[x]*w[1] + s2[x]*w[2] + s3[x]*w[3] + 8) >> 4); \
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} \
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\
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dst += stride; \
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s0 += stride; \
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s1 += stride; \
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s2 += stride; \
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s3 += stride; \
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} \
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}
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#define OP_PUT(dst, val) (dst) = (val)
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#define OP_AVG(dst, val) (dst) = (((dst) + (val) + 1)>>1)
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PIXOP_BILINEAR(put, OP_PUT, 8) |
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PIXOP_BILINEAR(put, OP_PUT, 16) |
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PIXOP_BILINEAR(put, OP_PUT, 32) |
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PIXOP_BILINEAR(avg, OP_AVG, 8) |
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PIXOP_BILINEAR(avg, OP_AVG, 16) |
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PIXOP_BILINEAR(avg, OP_AVG, 32) |
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#define op_scale1(x) block[x] = av_clip_uint8( (block[x]*weight + (1<<(log2_denom-1))) >> log2_denom)
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#define op_scale2(x) dst[x] = av_clip_uint8( (src[x]*weights + dst[x]*weightd + (1<<(log2_denom-1))) >> log2_denom)
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#define DIRAC_WEIGHT(W) \
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static void weight_dirac_pixels ## W ## _c(uint8_t *block, int stride, int log2_denom, \
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int weight, int h) { \
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int x; \
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while (h--) { \
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for (x = 0; x < W; x++) { \
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op_scale1(x); \
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op_scale1(x+1); \
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} \
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block += stride; \
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} \
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} \
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static void biweight_dirac_pixels ## W ## _c(uint8_t *dst, const uint8_t *src, int stride, int log2_denom, \
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int weightd, int weights, int h) { \
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int x; \
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while (h--) { \
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for (x = 0; x < W; x++) { \
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op_scale2(x); \
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op_scale2(x+1); \
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} \
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dst += stride; \
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src += stride; \
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} \
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}
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DIRAC_WEIGHT(8) |
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DIRAC_WEIGHT(16) |
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DIRAC_WEIGHT(32) |
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#define ADD_OBMC(xblen) \
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static void add_obmc ## xblen ## _c(uint16_t *dst, const uint8_t *src, int stride, \
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const uint8_t *obmc_weight, int yblen) \
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{ \
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int x; \
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while (yblen--) { \
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for (x = 0; x < xblen; x += 2) { \
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dst[x ] += src[x ] * obmc_weight[x ]; \
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dst[x+1] += src[x+1] * obmc_weight[x+1]; \
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} \
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dst += stride; \
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src += stride; \
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obmc_weight += 32; \
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} \
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}
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ADD_OBMC(8) |
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ADD_OBMC(16) |
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ADD_OBMC(32) |
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static void put_signed_rect_clamped_c(uint8_t *dst, int dst_stride, const int16_t *src, int src_stride, int width, int height) |
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{
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int x, y; |
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for (y = 0; y < height; y++) { |
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for (x = 0; x < width; x+=4) { |
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dst[x ] = av_clip_uint8(src[x ] + 128); |
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dst[x+1] = av_clip_uint8(src[x+1] + 128); |
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dst[x+2] = av_clip_uint8(src[x+2] + 128); |
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dst[x+3] = av_clip_uint8(src[x+3] + 128); |
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}
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dst += dst_stride; |
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src += src_stride; |
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}
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}
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static void add_rect_clamped_c(uint8_t *dst, const uint16_t *src, int stride, |
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const int16_t *idwt, int idwt_stride, |
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int width, int height) |
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{
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int x, y; |
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for (y = 0; y < height; y++) { |
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for (x = 0; x < width; x+=2) { |
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dst[x ] = av_clip_uint8(((src[x ]+32)>>6) + idwt[x ]); |
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dst[x+1] = av_clip_uint8(((src[x+1]+32)>>6) + idwt[x+1]); |
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}
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dst += stride; |
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src += stride; |
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idwt += idwt_stride; |
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}
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}
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#define PIXFUNC(PFX, WIDTH) \
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c->PFX ## _dirac_pixels_tab[WIDTH>>4][0] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _c; \
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c->PFX ## _dirac_pixels_tab[WIDTH>>4][1] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l2_c; \
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c->PFX ## _dirac_pixels_tab[WIDTH>>4][2] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l4_c; \
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c->PFX ## _dirac_pixels_tab[WIDTH>>4][3] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _bilinear_c
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av_cold void ff_diracdsp_init(DiracDSPContext *c) |
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{
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c->dirac_hpel_filter = dirac_hpel_filter; |
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c->add_rect_clamped = add_rect_clamped_c; |
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c->put_signed_rect_clamped = put_signed_rect_clamped_c; |
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c->add_dirac_obmc[0] = add_obmc8_c; |
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c->add_dirac_obmc[1] = add_obmc16_c; |
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c->add_dirac_obmc[2] = add_obmc32_c; |
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c->weight_dirac_pixels_tab[0] = weight_dirac_pixels8_c; |
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c->weight_dirac_pixels_tab[1] = weight_dirac_pixels16_c; |
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c->weight_dirac_pixels_tab[2] = weight_dirac_pixels32_c; |
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c->biweight_dirac_pixels_tab[0] = biweight_dirac_pixels8_c; |
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c->biweight_dirac_pixels_tab[1] = biweight_dirac_pixels16_c; |
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c->biweight_dirac_pixels_tab[2] = biweight_dirac_pixels32_c; |
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PIXFUNC(put, 8); |
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PIXFUNC(put, 16); |
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PIXFUNC(put, 32); |
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PIXFUNC(avg, 8); |
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PIXFUNC(avg, 16); |
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PIXFUNC(avg, 32); |
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if (HAVE_MMX && HAVE_YASM) ff_diracdsp_init_mmx(c); |
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}
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