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/*
Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <inttypes.h>
#include "config.h"
#include "mp_msg.h"
#include "cpudetect.h"
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "libvo/fastmemcpy.h"
// Needed to bring in lrintf.
#define HAVE_AV_CONFIG_H
#include "libavcodec/avcodec.h"
#include "libavcodec/eval.h"
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
struct vf_priv_s {
char eq[200];
int8_t *qp;
int8_t lut[257];
int qp_stride;
};
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 h= (height+15)>>4;
int i;
vf->priv->qp_stride= (width+15)>>4;
vf->priv->qp= av_malloc(vf->priv->qp_stride*h*sizeof(int8_t));
for(i=-129; i<128; i++){
double const_values[]={
M_PI,
M_E,
i != -129,
i,
0
};
static const char *const_names[]={
"PI",
"E",
"known",
"qp",
NULL
};
vf->priv->lut[i+129]= lrintf(ff_eval(vf->priv->eq, const_values, const_names, NULL, NULL, NULL, NULL, NULL));
}
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
// ok, we can do pp in-place (or pp disabled):
vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
mpi->type, mpi->flags, mpi->w, mpi->h);
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_s* vf, mp_image_t *mpi, double pts){
mp_image_t *dmpi;
int x,y;
if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
// no DR, so get a new image! hope we'll get DR buffer:
vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE|MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
mpi->w,mpi->h);
}
dmpi= vf->dmpi;
if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
memcpy_pic(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h, dmpi->stride[0], mpi->stride[0]);
if(mpi->flags&MP_IMGFLAG_PLANAR){
memcpy_pic(dmpi->planes[1], mpi->planes[1], mpi->w>>mpi->chroma_x_shift, mpi->h>>mpi->chroma_y_shift, dmpi->stride[1], mpi->stride[1]);
memcpy_pic(dmpi->planes[2], mpi->planes[2], mpi->w>>mpi->chroma_x_shift, mpi->h>>mpi->chroma_y_shift, dmpi->stride[2], mpi->stride[2]);
}
}
vf_clone_mpi_attributes(dmpi, mpi);
dmpi->qscale = vf->priv->qp;
dmpi->qstride= vf->priv->qp_stride;
if(mpi->qscale){
for(y=0; y<((dmpi->h+15)>>4); y++){
for(x=0; x<vf->priv->qp_stride; x++){
dmpi->qscale[x + dmpi->qstride*y]=
vf->priv->lut[ 129 + ((int8_t)mpi->qscale[x + mpi->qstride*y]) ];
}
}
}else{
int qp= vf->priv->lut[0];
for(y=0; y<((dmpi->h+15)>>4); y++){
for(x=0; x<vf->priv->qp_stride; x++){
dmpi->qscale[x + dmpi->qstride*y]= qp;
}
}
}
return vf_next_put_image(vf,dmpi, pts);
}
static void uninit(struct vf_instance_s* vf){
if(!vf->priv) return;
if(vf->priv->qp) av_free(vf->priv->qp);
vf->priv->qp= NULL;
av_free(vf->priv);
vf->priv=NULL;
}
//===========================================================================//
static int open(vf_instance_t *vf, char* args){
vf->config=config;
vf->put_image=put_image;
vf->get_image=get_image;
vf->uninit=uninit;
vf->priv=av_malloc(sizeof(struct vf_priv_s));
memset(vf->priv, 0, sizeof(struct vf_priv_s));
// avcodec_init();
if (args) strncpy(vf->priv->eq, args, 199);
return 1;
}
const vf_info_t vf_info_qp = {
"QP changer",
"qp",
"Michael Niedermayer",
"",
open,
NULL
};
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