| /* |
| * Copyright (C) 2009 Loren Merritt <lorenm@u.washignton.edu> |
| * |
| * This file is part of MPlayer. |
| * |
| * MPlayer is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * MPlayer 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 General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with MPlayer; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| */ |
| |
| /* |
| * Debanding algorithm (from gradfun2db by prunedtree): |
| * Boxblur. |
| * Foreach pixel, if it's within threshold of the blurred value, make it closer. |
| * So now we have a smoothed and higher bitdepth version of all the shallow |
| * gradients, while leaving detailed areas untouched. |
| * Dither it back to 8bit. |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <inttypes.h> |
| |
| #include "config.h" |
| #include "cpudetect.h" |
| #include "img_format.h" |
| #include "mp_image.h" |
| #include "vf.h" |
| #include "libvo/fastmemcpy.h" |
| #include "libavutil/avutil.h" |
| #include "libavutil/x86_cpu.h" |
| |
| struct vf_priv_s { |
| int thresh; |
| int radius; |
| uint16_t *buf; |
| void (*filter_line)(uint8_t *dst, uint8_t *src, uint16_t *dc, |
| int width, int thresh, const uint16_t *dithers); |
| void (*blur_line)(uint16_t *dc, uint16_t *buf, uint16_t *buf1, |
| uint8_t *src, int sstride, int width); |
| }; |
| |
| static const uint16_t __attribute__((aligned(16))) pw_7f[8] = {127,127,127,127,127,127,127,127}; |
| static const uint16_t __attribute__((aligned(16))) pw_ff[8] = {255,255,255,255,255,255,255,255}; |
| static const uint16_t __attribute__((aligned(16))) dither[8][8] = { |
| { 0, 96, 24,120, 6,102, 30,126 }, |
| { 64, 32, 88, 56, 70, 38, 94, 62 }, |
| { 16,112, 8,104, 22,118, 14,110 }, |
| { 80, 48, 72, 40, 86, 54, 78, 46 }, |
| { 4,100, 28,124, 2, 98, 26,122 }, |
| { 68, 36, 92, 60, 66, 34, 90, 58 }, |
| { 20,116, 12,108, 18,114, 10,106 }, |
| { 84, 52, 76, 44, 82, 50, 74, 42 }, |
| }; |
| |
| static void filter_line_c(uint8_t *dst, uint8_t *src, uint16_t *dc, |
| int width, int thresh, const uint16_t *dithers) |
| { |
| int x; |
| for (x=0; x<width; x++, dc+=x&1) { |
| int pix = src[x]<<7; |
| int delta = dc[0] - pix; |
| int m = abs(delta) * thresh >> 16; |
| m = FFMAX(0, 127-m); |
| m = m*m*delta >> 14; |
| pix += m + dithers[x&7]; |
| dst[x] = av_clip_uint8(pix>>7); |
| } |
| } |
| |
| static void blur_line_c(uint16_t *dc, uint16_t *buf, uint16_t *buf1, |
| uint8_t *src, int sstride, int width) |
| { |
| int x, v, old; |
| for (x=0; x<width; x++) { |
| v = buf1[x] + src[2*x] + src[2*x+1] + src[2*x+sstride] + src[2*x+1+sstride]; |
| old = buf[x]; |
| buf[x] = v; |
| dc[x] = v - old; |
| } |
| } |
| |
| #if HAVE_MMX2 |
| static void filter_line_mmx2(uint8_t *dst, uint8_t *src, uint16_t *dc, |
| int width, int thresh, const uint16_t *dithers) |
| { |
| intptr_t x; |
| if (width&3) { |
| x = width&~3; |
| filter_line_c(dst+x, src+x, dc+x/2, width-x, thresh, dithers); |
| width = x; |
| } |
| x = -width; |
| __asm__ volatile( |
| "movd %4, %%mm5 \n" |
| "pxor %%mm7, %%mm7 \n" |
| "pshufw $0, %%mm5, %%mm5 \n" |
| "movq %6, %%mm6 \n" |
| "movq %5, %%mm4 \n" |
| "1: \n" |
| "movd (%2,%0), %%mm0 \n" |
| "movd (%3,%0), %%mm1 \n" |
| "punpcklbw %%mm7, %%mm0 \n" |
| "punpcklwd %%mm1, %%mm1 \n" |
| "psllw $7, %%mm0 \n" |
| "pxor %%mm2, %%mm2 \n" |
| "psubw %%mm0, %%mm1 \n" // delta = dc - pix |
| "psubw %%mm1, %%mm2 \n" |
| "pmaxsw %%mm1, %%mm2 \n" |
| "pmulhuw %%mm5, %%mm2 \n" // m = abs(delta) * thresh >> 16 |
| "psubw %%mm6, %%mm2 \n" |
| "pminsw %%mm7, %%mm2 \n" // m = -max(0, 127-m) |
| "pmullw %%mm2, %%mm2 \n" |
| "paddw %%mm4, %%mm0 \n" // pix += dither |
| "pmulhw %%mm2, %%mm1 \n" |
| "psllw $2, %%mm1 \n" // m = m*m*delta >> 14 |
| "paddw %%mm1, %%mm0 \n" // pix += m |
| "psraw $7, %%mm0 \n" |
| "packuswb %%mm0, %%mm0 \n" |
| "movd %%mm0, (%1,%0) \n" // dst = clip(pix>>7) |
| "add $4, %0 \n" |
| "jl 1b \n" |
| "emms \n" |
| :"+r"(x) |
| :"r"(dst+width), "r"(src+width), "r"(dc+width/2), |
| "rm"(thresh), "m"(*dithers), "m"(*pw_7f) |
| :"memory" |
| ); |
| } |
| #endif |
| |
| #if HAVE_SSSE3 |
| static void filter_line_ssse3(uint8_t *dst, uint8_t *src, uint16_t *dc, |
| int width, int thresh, const uint16_t *dithers) |
| { |
| intptr_t x; |
| if (width&7) { |
| // could be 10% faster if I somehow eliminated this |
| x = width&~7; |
| filter_line_c(dst+x, src+x, dc+x/2, width-x, thresh, dithers); |
| width = x; |
| } |
| x = -width; |
| __asm__ volatile( |
| "movd %4, %%xmm5 \n" |
| "pxor %%xmm7, %%xmm7 \n" |
| "pshuflw $0,%%xmm5, %%xmm5 \n" |
| "movdqa %6, %%xmm6 \n" |
| "punpcklqdq %%xmm5, %%xmm5 \n" |
| "movdqa %5, %%xmm4 \n" |
| "1: \n" |
| "movq (%2,%0), %%xmm0 \n" |
| "movq (%3,%0), %%xmm1 \n" |
| "punpcklbw %%xmm7, %%xmm0 \n" |
| "punpcklwd %%xmm1, %%xmm1 \n" |
| "psllw $7, %%xmm0 \n" |
| "psubw %%xmm0, %%xmm1 \n" // delta = dc - pix |
| "pabsw %%xmm1, %%xmm2 \n" |
| "pmulhuw %%xmm5, %%xmm2 \n" // m = abs(delta) * thresh >> 16 |
| "psubw %%xmm6, %%xmm2 \n" |
| "pminsw %%xmm7, %%xmm2 \n" // m = -max(0, 127-m) |
| "pmullw %%xmm2, %%xmm2 \n" |
| "psllw $1, %%xmm2 \n" |
| "paddw %%xmm4, %%xmm0 \n" // pix += dither |
| "pmulhrsw %%xmm2, %%xmm1 \n" // m = m*m*delta >> 14 |
| "paddw %%xmm1, %%xmm0 \n" // pix += m |
| "psraw $7, %%xmm0 \n" |
| "packuswb %%xmm0, %%xmm0 \n" |
| "movq %%xmm0, (%1,%0) \n" // dst = clip(pix>>7) |
| "add $8, %0 \n" |
| "jl 1b \n" |
| :"+&r"(x) |
| :"r"(dst+width), "r"(src+width), "r"(dc+width/2), |
| "rm"(thresh), "m"(*dithers), "m"(*pw_7f) |
| :"memory" |
| ); |
| } |
| #endif // HAVE_SSSE3 |
| |
| #if HAVE_SSE && HAVE_6REGS |
| #define BLURV(load)\ |
| intptr_t x = -2*width;\ |
| __asm__ volatile(\ |
| "movdqa %6, %%xmm7 \n"\ |
| "1: \n"\ |
| load" (%4,%0), %%xmm0 \n"\ |
| load" (%5,%0), %%xmm1 \n"\ |
| "movdqa %%xmm0, %%xmm2 \n"\ |
| "movdqa %%xmm1, %%xmm3 \n"\ |
| "psrlw $8, %%xmm0 \n"\ |
| "psrlw $8, %%xmm1 \n"\ |
| "pand %%xmm7, %%xmm2 \n"\ |
| "pand %%xmm7, %%xmm3 \n"\ |
| "paddw %%xmm1, %%xmm0 \n"\ |
| "paddw %%xmm3, %%xmm2 \n"\ |
| "paddw %%xmm2, %%xmm0 \n"\ |
| "paddw (%2,%0), %%xmm0 \n"\ |
| "movdqa (%1,%0), %%xmm1 \n"\ |
| "movdqa %%xmm0, (%1,%0) \n"\ |
| "psubw %%xmm1, %%xmm0 \n"\ |
| "movdqa %%xmm0, (%3,%0) \n"\ |
| "add $16, %0 \n"\ |
| "jl 1b \n"\ |
| :"+&r"(x)\ |
| :"r"(buf+width),\ |
| "r"(buf1+width),\ |
| "r"(dc+width),\ |
| "r"(src+width*2),\ |
| "r"(src+width*2+sstride),\ |
| "m"(*pw_ff)\ |
| :"memory"\ |
| ); |
| |
| static void blur_line_sse2(uint16_t *dc, uint16_t *buf, uint16_t *buf1, |
| uint8_t *src, int sstride, int width) |
| { |
| if (((intptr_t)src|sstride)&15) { |
| BLURV("movdqu"); |
| } else { |
| BLURV("movdqa"); |
| } |
| } |
| #endif // HAVE_6REGS && HAVE_SSE |
| |
| static void filter(struct vf_priv_s *ctx, uint8_t *dst, uint8_t *src, |
| int width, int height, int dstride, int sstride, int r) |
| { |
| int bstride = ((width+15)&~15)/2; |
| int y; |
| uint32_t dc_factor = (1<<21)/(r*r); |
| uint16_t *dc = ctx->buf+16; |
| uint16_t *buf = ctx->buf+bstride+32; |
| int thresh = ctx->thresh; |
| |
| memset(dc, 0, (bstride+16)*sizeof(*buf)); |
| for (y=0; y<r; y++) |
| ctx->blur_line(dc, buf+y*bstride, buf+(y-1)*bstride, src+2*y*sstride, sstride, width/2); |
| for (;;) { |
| if (y < height-r) { |
| int mod = ((y+r)/2)%r; |
| uint16_t *buf0 = buf+mod*bstride; |
| uint16_t *buf1 = buf+(mod?mod-1:r-1)*bstride; |
| int x, v; |
| ctx->blur_line(dc, buf0, buf1, src+(y+r)*sstride, sstride, width/2); |
| for (x=v=0; x<r; x++) |
| v += dc[x]; |
| for (; x<width/2; x++) { |
| v += dc[x] - dc[x-r]; |
| dc[x-r] = v * dc_factor >> 16; |
| } |
| for (; x<(width+r+1)/2; x++) |
| dc[x-r] = v * dc_factor >> 16; |
| for (x=-r/2; x<0; x++) |
| dc[x] = dc[0]; |
| } |
| if (y == r) { |
| for (y=0; y<r; y++) |
| ctx->filter_line(dst+y*dstride, src+y*sstride, dc-r/2, width, thresh, dither[y&7]); |
| } |
| ctx->filter_line(dst+y*dstride, src+y*sstride, dc-r/2, width, thresh, dither[y&7]); |
| if (++y >= height) break; |
| ctx->filter_line(dst+y*dstride, src+y*sstride, dc-r/2, width, thresh, dither[y&7]); |
| if (++y >= height) break; |
| } |
| } |
| |
| static void get_image(struct vf_instance *vf, mp_image_t *mpi) |
| { |
| if (mpi->flags&MP_IMGFLAG_PRESERVE) return; // don't change |
| // ok, we can do pp in-place: |
| vf->dmpi = vf_get_image(vf->next, mpi->imgfmt, |
| mpi->type, mpi->flags, mpi->width, mpi->height); |
| mpi->planes[0] = vf->dmpi->planes[0]; |
| mpi->stride[0] = vf->dmpi->stride[0]; |
| mpi->width = vf->dmpi->width; |
| if (mpi->flags&MP_IMGFLAG_PLANAR){ |
| mpi->planes[1] = vf->dmpi->planes[1]; |
| mpi->planes[2] = vf->dmpi->planes[2]; |
| mpi->stride[1] = vf->dmpi->stride[1]; |
| mpi->stride[2] = vf->dmpi->stride[2]; |
| } |
| mpi->flags |= MP_IMGFLAG_DIRECT; |
| } |
| |
| static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts) |
| { |
| mp_image_t *dmpi = vf->dmpi; |
| int p; |
| |
| if (!(mpi->flags&MP_IMGFLAG_DIRECT)) { |
| // no DR, so get a new image. hope we'll get DR buffer: |
| dmpi = vf_get_image(vf->next,mpi->imgfmt, MP_IMGTYPE_TEMP, |
| MP_IMGFLAG_ACCEPT_STRIDE|MP_IMGFLAG_PREFER_ALIGNED_STRIDE, |
| mpi->w, mpi->h); |
| } |
| vf_clone_mpi_attributes(dmpi, mpi); |
| |
| for (p=0; p<mpi->num_planes; p++) { |
| int w = mpi->w; |
| int h = mpi->h; |
| int r = vf->priv->radius; |
| if (p) { |
| w >>= mpi->chroma_x_shift; |
| h >>= mpi->chroma_y_shift; |
| r = ((r>>mpi->chroma_x_shift) + (r>>mpi->chroma_y_shift)) / 2; |
| r = av_clip((r+1)&~1,4,32); |
| } |
| if (FFMIN(w,h) > 2*r) |
| filter(vf->priv, dmpi->planes[p], mpi->planes[p], w, h, |
| dmpi->stride[p], mpi->stride[p], r); |
| else if (dmpi->planes[p] != mpi->planes[p]) |
| memcpy_pic(dmpi->planes[p], mpi->planes[p], w, h, |
| dmpi->stride[p], mpi->stride[p]); |
| } |
| |
| return vf_next_put_image(vf, dmpi, pts); |
| } |
| |
| static int query_format(struct vf_instance *vf, unsigned int fmt) |
| { |
| switch (fmt){ |
| case IMGFMT_YVU9: |
| case IMGFMT_IF09: |
| case IMGFMT_YV12: |
| case IMGFMT_I420: |
| case IMGFMT_IYUV: |
| case IMGFMT_CLPL: |
| case IMGFMT_Y800: |
| case IMGFMT_Y8: |
| case IMGFMT_NV12: |
| case IMGFMT_NV21: |
| case IMGFMT_444P: |
| case IMGFMT_422P: |
| case IMGFMT_411P: |
| case IMGFMT_HM12: |
| return vf_next_query_format(vf,fmt); |
| } |
| return 0; |
| } |
| |
| static int config(struct vf_instance *vf, |
| int width, int height, int d_width, int d_height, |
| unsigned int flags, unsigned int outfmt) |
| { |
| free(vf->priv->buf); |
| vf->priv->buf = av_mallocz((((width+15)&~15)*(vf->priv->radius+1)/2+32)*sizeof(uint16_t)); |
| return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt); |
| } |
| |
| static void uninit(struct vf_instance *vf) |
| { |
| if (!vf->priv) return; |
| av_free(vf->priv->buf); |
| free(vf->priv); |
| vf->priv = NULL; |
| } |
| |
| static int vf_open(vf_instance_t *vf, char *args) |
| { |
| float thresh = 1.2; |
| int radius = 16; |
| |
| vf->get_image=get_image; |
| vf->put_image=put_image; |
| vf->query_format=query_format; |
| vf->config=config; |
| vf->uninit=uninit; |
| vf->priv=malloc(sizeof(struct vf_priv_s)); |
| memset(vf->priv, 0, sizeof(struct vf_priv_s)); |
| |
| if (args) sscanf(args, "%f:%d", &thresh, &radius); |
| vf->priv->thresh = (1<<15)/av_clipf(thresh,0.51,255); |
| vf->priv->radius = av_clip((radius+1)&~1,4,32); |
| |
| vf->priv->blur_line = blur_line_c; |
| vf->priv->filter_line = filter_line_c; |
| #if HAVE_SSE && HAVE_6REGS |
| if (gCpuCaps.hasSSE2) |
| vf->priv->blur_line = blur_line_sse2; |
| #endif |
| #if HAVE_MMX2 |
| if (gCpuCaps.hasMMX2) |
| vf->priv->filter_line = filter_line_mmx2; |
| #endif |
| #if HAVE_SSSE3 |
| if (gCpuCaps.hasSSSE3) |
| vf->priv->filter_line = filter_line_ssse3; |
| #endif |
| |
| return 1; |
| } |
| |
| const vf_info_t vf_info_gradfun = { |
| "gradient deband", |
| "gradfun", |
| "Loren Merritt", |
| "", |
| vf_open, |
| NULL |
| }; |
