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mpv/libmpcodecs/vf_unsharp.c
albeu 33b62af947 Add the new -vf option wich is the same as vop in reverse order.
Syntax is we decided, so you can give the nomes or not with both
vop and vf. vf take precedence over vop.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@9594 b3059339-0415-0410-9bf9-f77b7e298cf2
2003-03-15 18:01:02 +00:00

342 lines
9.7 KiB
C

/*
Copyright (C) 2002 Rémi Guyomarch <rguyom@pobox.com>
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <math.h>
#include "../config.h"
#include "../mp_msg.h"
#include "../cpudetect.h"
#ifdef USE_SETLOCALE
#include <locale.h>
#endif
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "../libvo/fastmemcpy.h"
#ifndef MIN
#define MIN(a,b) (((a)<(b))?(a):(b))
#endif
#ifndef MAX
#define MAX(a,b) (((a)>(b))?(a):(b))
#endif
//===========================================================================//
#define MIN_MATRIX_SIZE 3
#define MAX_MATRIX_SIZE 63
typedef struct FilterParam {
int msizeX, msizeY;
double amount;
uint32_t *SC[MAX_MATRIX_SIZE-1];
} FilterParam;
struct vf_priv_s {
FilterParam lumaParam;
FilterParam chromaParam;
mp_image_t *dmpi;
unsigned int outfmt;
};
//===========================================================================//
/* This code is based on :
An Efficient algorithm for Gaussian blur using finite-state machines
Frederick M. Waltz and John W. V. Miller
SPIE Conf. on Machine Vision Systems for Inspection and Metrology VII
Originally published Boston, Nov 98
*/
static void unsharp( uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int width, int height, FilterParam *fp ) {
uint32_t **SC = fp->SC;
uint32_t SR[MAX_MATRIX_SIZE-1], Tmp1, Tmp2;
uint8_t* src2 = src; // avoid gcc warning
int32_t res;
int x, y, z;
int amount = fp->amount * 65536.0;
int stepsX = fp->msizeX/2;
int stepsY = fp->msizeY/2;
int scalebits = (stepsX+stepsY)*2;
int32_t halfscale = 1 << ((stepsX+stepsY)*2-1);
if( !fp->amount ) {
if( src == dst )
return;
if( dstStride == srcStride )
memcpy( dst, src, srcStride*height );
else
for( y=0; y<height; y++, dst+=dstStride, src+=srcStride )
memcpy( dst, src, width );
return;
}
for( y=0; y<2*stepsY; y++ )
memset( SC[y], 0, sizeof(SC[y][0]) * (width+2*stepsX) );
for( y=-stepsY; y<height+stepsY; y++ ) {
if( y < height ) src2 = src;
memset( SR, 0, sizeof(SR[0]) * (2*stepsX-1) );
for( x=-stepsX; x<width+stepsX; x++ ) {
Tmp1 = x<=0 ? src2[0] : x>=width ? src2[width-1] : src2[x];
for( z=0; z<stepsX*2; z+=2 ) {
Tmp2 = SR[z+0] + Tmp1; SR[z+0] = Tmp1;
Tmp1 = SR[z+1] + Tmp2; SR[z+1] = Tmp2;
}
for( z=0; z<stepsY*2; z+=2 ) {
Tmp2 = SC[z+0][x+stepsX] + Tmp1; SC[z+0][x+stepsX] = Tmp1;
Tmp1 = SC[z+1][x+stepsX] + Tmp2; SC[z+1][x+stepsX] = Tmp2;
}
if( x>=stepsX && y>=stepsY ) {
uint8_t* srx = src - stepsY*srcStride + x - stepsX;
uint8_t* dsx = dst - stepsY*dstStride + x - stepsX;
res = (int32_t)*srx + ( ( ( (int32_t)*srx - (int32_t)((Tmp1+halfscale) >> scalebits) ) * amount ) >> 16 );
*dsx = res>255 ? 255 : res<0 ? 0 : (uint8_t)res;
}
}
if( y >= 0 ) {
dst += dstStride;
src += srcStride;
}
}
}
//===========================================================================//
static int config( struct vf_instance_s* vf,
int width, int height, int d_width, int d_height,
unsigned int flags, unsigned int outfmt ) {
int z, stepsX, stepsY;
FilterParam *fp;
char *effect;
// allocate buffers
fp = &vf->priv->lumaParam;
effect = fp->amount == 0 ? "don't touch" : fp->amount < 0 ? "blur" : "sharpen";
mp_msg( MSGT_VFILTER, MSGL_INFO, "unsharp: %dx%d:%0.2f (%s luma) \n", fp->msizeX, fp->msizeY, fp->amount, effect );
memset( fp->SC, 0, sizeof( fp->SC ) );
stepsX = fp->msizeX/2;
stepsY = fp->msizeY/2;
for( z=0; z<2*stepsY; z++ )
fp->SC[z] = memalign( 16, sizeof(*(fp->SC[z])) * (width+2*stepsX) );
fp = &vf->priv->chromaParam;
effect = fp->amount == 0 ? "don't touch" : fp->amount < 0 ? "blur" : "sharpen";
mp_msg( MSGT_VFILTER, MSGL_INFO, "unsharp: %dx%d:%0.2f (%s chroma)\n", fp->msizeX, fp->msizeY, fp->amount, effect );
memset( fp->SC, 0, sizeof( fp->SC ) );
stepsX = fp->msizeX/2;
stepsY = fp->msizeY/2;
for( z=0; z<2*stepsY; z++ )
fp->SC[z] = memalign( 16, sizeof(*(fp->SC[z])) * (width+2*stepsX) );
return vf_next_config( vf, width, height, d_width, d_height, flags, outfmt );
}
//===========================================================================//
static void get_image( struct vf_instance_s* vf, mp_image_t *mpi ) {
if( mpi->flags & MP_IMGFLAG_PRESERVE )
return; // don't change
if( mpi->imgfmt!=vf->priv->outfmt )
return; // colorspace differ
vf->priv->dmpi = vf_get_image( vf->next, mpi->imgfmt, mpi->type, mpi->flags, mpi->w, mpi->h );
mpi->planes[0] = vf->priv->dmpi->planes[0];
mpi->stride[0] = vf->priv->dmpi->stride[0];
mpi->width = vf->priv->dmpi->width;
if( mpi->flags & MP_IMGFLAG_PLANAR ) {
mpi->planes[1] = vf->priv->dmpi->planes[1];
mpi->planes[2] = vf->priv->dmpi->planes[2];
mpi->stride[1] = vf->priv->dmpi->stride[1];
mpi->stride[2] = vf->priv->dmpi->stride[2];
}
mpi->flags |= MP_IMGFLAG_DIRECT;
}
static int put_image( struct vf_instance_s* vf, mp_image_t *mpi ) {
mp_image_t *dmpi;
if( !(mpi->flags & MP_IMGFLAG_DIRECT) )
// no DR, so get a new image! hope we'll get DR buffer:
vf->priv->dmpi = vf_get_image( vf->next,vf->priv->outfmt, MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE, mpi->w, mpi->h);
dmpi= vf->priv->dmpi;
unsharp( dmpi->planes[0], mpi->planes[0], dmpi->stride[0], mpi->stride[0], mpi->w, mpi->h, &vf->priv->lumaParam );
unsharp( dmpi->planes[1], mpi->planes[1], dmpi->stride[1], mpi->stride[1], mpi->w/2, mpi->h/2, &vf->priv->chromaParam );
unsharp( dmpi->planes[2], mpi->planes[2], dmpi->stride[2], mpi->stride[2], mpi->w/2, mpi->h/2, &vf->priv->chromaParam );
dmpi->qscale = mpi->qscale;
dmpi->qstride = mpi->qstride;
#ifdef HAVE_MMX
if(gCpuCaps.hasMMX)
asm volatile ("emms\n\t");
#endif
#ifdef HAVE_MMX2
if(gCpuCaps.hasMMX2)
asm volatile ("sfence\n\t");
#endif
return vf_next_put_image( vf, dmpi );
}
static void uninit( struct vf_instance_s* vf ) {
unsigned int z;
FilterParam *fp;
if( !vf->priv ) return;
fp = &vf->priv->lumaParam;
for( z=0; z<sizeof(fp->SC)/sizeof(fp->SC[0]); z++ ) {
if( fp->SC[z] ) free( fp->SC[z] );
fp->SC[z] = NULL;
}
fp = &vf->priv->chromaParam;
for( z=0; z<sizeof(fp->SC)/sizeof(fp->SC[0]); z++ ) {
if( fp->SC[z] ) free( fp->SC[z] );
fp->SC[z] = NULL;
}
free( vf->priv );
vf->priv = NULL;
}
//===========================================================================//
static int query_format( struct vf_instance_s* vf, unsigned int fmt ) {
switch(fmt) {
case IMGFMT_YV12:
case IMGFMT_I420:
case IMGFMT_IYUV:
return vf_next_query_format( vf, vf->priv->outfmt );
}
return 0;
}
//===========================================================================//
static void parse( FilterParam *fp, char* args ) {
// l7x5:0.8:c3x3:-0.2
char *z;
char *pos = args;
char *max = args + strlen(args);
// parse matrix sizes
fp->msizeX = ( pos && pos+1<max ) ? atoi( pos+1 ) : 0;
z = strchr( pos+1, 'x' );
fp->msizeY = ( z && z+1<max ) ? atoi( pos=z+1 ) : fp->msizeX;
// min/max & odd
fp->msizeX = 1 | MIN( MAX( fp->msizeX, MIN_MATRIX_SIZE ), MAX_MATRIX_SIZE );
fp->msizeY = 1 | MIN( MAX( fp->msizeY, MIN_MATRIX_SIZE ), MAX_MATRIX_SIZE );
// parse amount
pos = strchr( pos+1, ':' );
#ifdef USE_SETLOCALE
setlocale( LC_NUMERIC, "C" );
#endif
fp->amount = ( pos && pos+1<max ) ? atof( pos+1 ) : 0;
#ifdef USE_SETLOCALE
setlocale( LC_NUMERIC, "" );
#endif
}
//===========================================================================//
static unsigned int fmt_list[] = {
IMGFMT_YV12,
IMGFMT_I420,
IMGFMT_IYUV,
0
};
static int open( vf_instance_t *vf, char* args ) {
vf->config = config;
vf->put_image = put_image;
vf->get_image = get_image;
vf->query_format = query_format;
vf->uninit = uninit;
vf->priv = malloc( sizeof(struct vf_priv_s) );
memset( vf->priv, 0, sizeof(struct vf_priv_s) );
if( args ) {
char *args2 = strchr( args, 'l' );
if( args2 )
parse( &vf->priv->lumaParam, args2 );
else {
vf->priv->lumaParam.amount =
vf->priv->lumaParam.msizeX =
vf->priv->lumaParam.msizeY = 0;
}
args2 = strchr( args, 'c' );
if( args2 )
parse( &vf->priv->chromaParam, args2 );
else {
vf->priv->chromaParam.amount =
vf->priv->chromaParam.msizeX =
vf->priv->chromaParam.msizeY = 0;
}
if( !vf->priv->lumaParam.msizeX && !vf->priv->chromaParam.msizeX )
return 0; // nothing to do
}
// check csp:
vf->priv->outfmt = vf_match_csp( &vf->next, fmt_list, IMGFMT_YV12 );
if( !vf->priv->outfmt ) {
uninit( vf );
return 0; // no csp match :(
}
return 1;
}
vf_info_t vf_info_unsharp = {
"unsharp mask & gaussian blur",
"unsharp",
"Rémi Guyomarch",
"",
open,
NULL
};
//===========================================================================//