diff options
Diffstat (limited to 'libavcodec/diracdsp.c')
-rw-r--r-- | libavcodec/diracdsp.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/libavcodec/diracdsp.c b/libavcodec/diracdsp.c new file mode 100644 index 0000000000..6cf75d8ff6 --- /dev/null +++ b/libavcodec/diracdsp.c @@ -0,0 +1,201 @@ +/* + * 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 "dsputil.h" +#include "diracdsp.h" +#include "libavcodec/x86/diracdsp_mmx.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, 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, 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_c(uint8_t *dst, int dst_stride, const int16_t *src, int src_stride, int width, int height) +{ + int x, y; + 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; + } +} + +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 + +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 = put_signed_rect_clamped_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 (HAVE_MMX && HAVE_YASM) ff_diracdsp_init_mmx(c); +} |