mirror of
https://github.com/mpv-player/mpv
synced 2024-12-15 19:35:49 +00:00
6a5f0f0c19
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@6449 b3059339-0415-0410-9bf9-f77b7e298cf2
358 lines
8.8 KiB
C
358 lines
8.8 KiB
C
/*
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Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include <math.h>
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#include "../config.h"
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#include "../mp_msg.h"
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#include "../cpudetect.h"
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#ifdef HAVE_MALLOC_H
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#include <malloc.h>
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#endif
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#include "img_format.h"
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#include "mp_image.h"
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#include "vf.h"
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#include "../libvo/fastmemcpy.h"
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#define MAX_NOISE 4096
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#define MAX_SHIFT 1024
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#define MAX_RES (MAX_NOISE-MAX_SHIFT)
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//===========================================================================//
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static inline void lineNoise_C(uint8_t *dst, uint8_t *src, int8_t *noise, int len, int shift);
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static void (*lineNoise)(uint8_t *dst, uint8_t *src, int8_t *noise, int len, int shift)= lineNoise_C;
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typedef struct FilterParam{
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int strength;
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int uniform;
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int temporal;
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int quality;
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int8_t *noise;
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}FilterParam;
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struct vf_priv_s {
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FilterParam lumaParam;
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FilterParam chromaParam;
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mp_image_t *dmpi;
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unsigned int outfmt;
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};
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static int nonTempRandShift[MAX_RES]= {-1};
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static int8_t *initNoise(FilterParam *fp){
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int strength= fp->strength;
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int uniform= fp->uniform;
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int8_t *noise= memalign(16, MAX_NOISE*sizeof(int8_t));
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int i;
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srand(123457);
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for(i=0; i<MAX_NOISE; i++)
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{
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if(uniform)
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noise[i]= ((rand()/11)%strength) - strength/2;
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else
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{
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double x1, x2, w, y1;
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do {
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x1 = 2.0 * rand()/(float)RAND_MAX - 1.0;
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x2 = 2.0 * rand()/(float)RAND_MAX - 1.0;
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w = x1 * x1 + x2 * x2;
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} while ( w >= 1.0 );
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w = sqrt( (-2.0 * log( w ) ) / w );
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y1= x1 * w;
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y1*= strength / sqrt(3.0);
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if (y1<-128) y1=-128;
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else if(y1> 127) y1= 127;
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noise[i]= (int)y1;
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}
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}
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if(nonTempRandShift[0]==-1){
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for(i=0; i<MAX_RES; i++){
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nonTempRandShift[i]= rand()&(MAX_SHIFT-1);
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}
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}
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fp->noise= noise;
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return noise;
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}
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#ifdef HAVE_MMX
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static inline void lineNoise_MMX(uint8_t *dst, uint8_t *src, int8_t *noise, int len, int shift){
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int mmx_len= len&(~7);
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noise+=shift;
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asm volatile(
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"movl %3, %%eax \n\t"
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"pcmpeqb %%mm7, %%mm7 \n\t"
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"psllw $15, %%mm7 \n\t"
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"packsswb %%mm7, %%mm7 \n\t"
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".balign 16 \n\t"
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"1: \n\t"
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"movq (%0, %%eax), %%mm0 \n\t"
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"movq (%1, %%eax), %%mm1 \n\t"
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"pxor %%mm7, %%mm0 \n\t"
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"paddsb %%mm1, %%mm0 \n\t"
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"pxor %%mm7, %%mm0 \n\t"
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"movq %%mm0, (%2, %%eax) \n\t"
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"addl $8, %%eax \n\t"
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" js 1b \n\t"
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:: "r" (src+mmx_len), "r" (noise+mmx_len), "r" (dst+mmx_len), "g" (-mmx_len)
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: "%eax"
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);
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if(mmx_len!=len)
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lineNoise_C(dst+mmx_len, src+mmx_len, noise+mmx_len, len-mmx_len, 0);
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}
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#endif
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//duplicate of previous except movntq
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#ifdef HAVE_MMX2
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static inline void lineNoise_MMX2(uint8_t *dst, uint8_t *src, int8_t *noise, int len, int shift){
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int mmx_len= len&(~7);
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noise+=shift;
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asm volatile(
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"movl %3, %%eax \n\t"
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"pcmpeqb %%mm7, %%mm7 \n\t"
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"psllw $15, %%mm7 \n\t"
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"packsswb %%mm7, %%mm7 \n\t"
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".balign 16 \n\t"
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"1: \n\t"
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"movq (%0, %%eax), %%mm0 \n\t"
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"movq (%1, %%eax), %%mm1 \n\t"
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"pxor %%mm7, %%mm0 \n\t"
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"paddsb %%mm1, %%mm0 \n\t"
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"pxor %%mm7, %%mm0 \n\t"
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"movntq %%mm0, (%2, %%eax) \n\t"
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"addl $8, %%eax \n\t"
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" js 1b \n\t"
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:: "r" (src+mmx_len), "r" (noise+mmx_len), "r" (dst+mmx_len), "g" (-mmx_len)
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: "%eax"
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);
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if(mmx_len!=len)
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lineNoise_C(dst+mmx_len, src+mmx_len, noise+mmx_len, len-mmx_len, 0);
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}
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#endif
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static inline void lineNoise_C(uint8_t *dst, uint8_t *src, int8_t *noise, int len, int shift){
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int i;
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noise+= shift;
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for(i=0; i<len; i++)
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{
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int v= src[i]+ noise[i];
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if(v>255) dst[i]=255; //FIXME optimize
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else if(v<0) dst[i]=0;
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else dst[i]=v;
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}
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}
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static void noise(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int width, int height, FilterParam *fp){
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int8_t *noise= fp->noise;
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int y;
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int shift=0;
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if(!noise)
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{
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if(src==dst) return;
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if(dstStride==srcStride) memcpy(dst, src, srcStride*height);
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else
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{
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for(y=0; y<height; y++)
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{
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memcpy(dst, src, width);
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dst+= dstStride;
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src+= srcStride;
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}
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}
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return;
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}
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for(y=0; y<height; y++)
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{
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if(fp->temporal) shift= rand()&(MAX_SHIFT -1);
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else shift= nonTempRandShift[y];
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if(fp->quality==0) shift&= ~7;
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lineNoise(dst, src, noise, width, shift);
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dst+= dstStride;
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src+= srcStride;
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}
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}
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static int config(struct vf_instance_s* vf,
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int width, int height, int d_width, int d_height,
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unsigned int flags, unsigned int outfmt){
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return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
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}
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static void get_image(struct vf_instance_s* vf, mp_image_t *mpi){
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if(mpi->flags&MP_IMGFLAG_PRESERVE) return; // don't change
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if(!(mpi->flags&MP_IMGFLAG_ACCEPT_STRIDE) && mpi->imgfmt!=vf->priv->outfmt)
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return; // colorspace differ
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// ok, we can do pp in-place (or pp disabled):
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vf->priv->dmpi=vf_get_image(vf->next,mpi->imgfmt,
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mpi->type, mpi->flags, mpi->w, mpi->h);
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mpi->planes[0]=vf->priv->dmpi->planes[0];
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mpi->stride[0]=vf->priv->dmpi->stride[0];
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mpi->width=vf->priv->dmpi->width;
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if(mpi->flags&MP_IMGFLAG_PLANAR){
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mpi->planes[1]=vf->priv->dmpi->planes[1];
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mpi->planes[2]=vf->priv->dmpi->planes[2];
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mpi->stride[1]=vf->priv->dmpi->stride[1];
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mpi->stride[2]=vf->priv->dmpi->stride[2];
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}
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mpi->flags|=MP_IMGFLAG_DIRECT;
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}
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static void put_image(struct vf_instance_s* vf, mp_image_t *mpi){
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mp_image_t *dmpi;
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if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
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// no DR, so get a new image! hope we'll get DR buffer:
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vf->priv->dmpi=vf_get_image(vf->next,vf->priv->outfmt,
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MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
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mpi->w,mpi->h);
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//printf("nodr\n");
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}
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//else printf("dr\n");
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dmpi= vf->priv->dmpi;
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noise(dmpi->planes[0], mpi->planes[0], dmpi->stride[0], mpi->stride[0], mpi->w, mpi->h, &vf->priv->lumaParam);
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noise(dmpi->planes[1], mpi->planes[1], dmpi->stride[1], mpi->stride[1], mpi->w/2, mpi->h/2, &vf->priv->chromaParam);
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noise(dmpi->planes[2], mpi->planes[2], dmpi->stride[2], mpi->stride[2], mpi->w/2, mpi->h/2, &vf->priv->chromaParam);
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dmpi->qscale=mpi->qscale;
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dmpi->qstride=mpi->qstride;
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#ifdef HAVE_MMX
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if(gCpuCaps.hasMMX) asm volatile ("emms\n\t");
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#endif
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#ifdef HAVE_MMX2
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if(gCpuCaps.hasMMX2) asm volatile ("sfence\n\t");
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#endif
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vf_next_put_image(vf,dmpi);
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}
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static void uninit(struct vf_instance_s* vf){
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if(!vf->priv) return;
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if(vf->priv->chromaParam.noise) free(vf->priv->chromaParam.noise);
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vf->priv->chromaParam.noise= NULL;
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if(vf->priv->lumaParam.noise) free(vf->priv->lumaParam.noise);
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vf->priv->lumaParam.noise= NULL;
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free(vf->priv);
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vf->priv=NULL;
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}
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//===========================================================================//
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static int query_format(struct vf_instance_s* vf, unsigned int fmt){
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switch(fmt)
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{
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case IMGFMT_YV12:
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case IMGFMT_I420:
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case IMGFMT_IYUV:
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return vf_next_query_format(vf,vf->priv->outfmt);
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}
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return 0;
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}
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static void parse(FilterParam *fp, char* args){
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char *pos;
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char *max= strchr(args, ':');
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if(!max) max= args + strlen(args);
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fp->strength= atoi(args);
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pos= strchr(args, 'u');
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if(pos && pos<max) fp->uniform=1;
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pos= strchr(args, 't');
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if(pos && pos<max) fp->temporal=1;
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pos= strchr(args, 'h');
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if(pos && pos<max) fp->quality=1;
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if(fp->strength) initNoise(fp);
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}
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static unsigned int fmt_list[]={
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IMGFMT_YV12,
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IMGFMT_I420,
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IMGFMT_IYUV,
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0
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};
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static int open(vf_instance_t *vf, char* args){
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vf->config=config;
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vf->put_image=put_image;
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vf->get_image=get_image;
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vf->query_format=query_format;
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vf->uninit=uninit;
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vf->priv=malloc(sizeof(struct vf_priv_s));
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memset(vf->priv, 0, sizeof(struct vf_priv_s));
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if(args)
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{
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char *arg2= strchr(args,':');
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if(arg2) parse(&vf->priv->chromaParam, arg2+1);
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parse(&vf->priv->lumaParam, args);
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}
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// check csp:
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vf->priv->outfmt=vf_match_csp(&vf->next,fmt_list,IMGFMT_YV12);
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if(!vf->priv->outfmt)
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{
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uninit(vf);
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return 0; // no csp match :(
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}
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#ifdef HAVE_MMX
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if(gCpuCaps.hasMMX) lineNoise= lineNoise_MMX;
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#endif
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#ifdef HAVE_MMX2
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if(gCpuCaps.hasMMX2) lineNoise= lineNoise_MMX2;
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#endif
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return 1;
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}
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vf_info_t vf_info_noise = {
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"noise genenerator",
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"noise",
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"Michael Niedermayer",
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"",
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open
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};
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//===========================================================================//
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