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/* |
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* Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of MPlayer. |
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* |
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* MPlayer 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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* |
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* MPlayer 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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* |
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* You should have received a copy of the GNU General Public License along |
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* with MPlayer; if not, write to the Free Software Foundation, Inc., |
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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 <math.h> |
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#include <inttypes.h> |
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#include "mp_msg.h" |
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#include "cpudetect.h" |
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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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#include "libavcodec/avcodec.h" |
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#include "libavutil/eval.h" |
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#include "libavutil/mem.h" |
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struct vf_priv_s { |
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char eq[200]; |
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int8_t *qp; |
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int8_t lut[257]; |
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int qp_stride; |
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}; |
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static int config(struct vf_instance *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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int h= (height+15)>>4; |
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int i; |
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vf->priv->qp_stride= (width+15)>>4; |
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vf->priv->qp= av_malloc(vf->priv->qp_stride*h*sizeof(int8_t)); |
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for(i=-129; i<128; i++){ |
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double const_values[]={ |
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M_PI, |
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M_E, |
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i != -129, |
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i, |
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0 |
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}; |
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static const char *const_names[]={ |
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"PI", |
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"E", |
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"known", |
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"qp", |
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NULL |
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}; |
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double temp_val; |
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int res; |
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res= av_expr_parse_and_eval(&temp_val, vf->priv->eq, const_names, const_values, NULL, NULL, NULL, NULL, NULL, 0, NULL); |
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if (res < 0){ |
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ff_mp_msg(MSGT_VFILTER, MSGL_ERR, "qp: Error evaluating \"%s\" \n", vf->priv->eq); |
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return 0; |
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} |
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vf->priv->lut[i+129]= lrintf(temp_val); |
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} |
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return ff_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 *vf, mp_image_t *mpi){ |
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if(mpi->flags&MP_IMGFLAG_PRESERVE) return; // don't change |
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// ok, we can do pp in-place (or pp disabled): |
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vf->dmpi=ff_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->dmpi->planes[0]; |
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mpi->stride[0]=vf->dmpi->stride[0]; |
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mpi->width=vf->dmpi->width; |
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if(mpi->flags&MP_IMGFLAG_PLANAR){ |
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mpi->planes[1]=vf->dmpi->planes[1]; |
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mpi->planes[2]=vf->dmpi->planes[2]; |
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mpi->stride[1]=vf->dmpi->stride[1]; |
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mpi->stride[2]=vf->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 int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){ |
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mp_image_t *dmpi; |
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int x,y; |
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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->dmpi=ff_vf_get_image(vf->next,mpi->imgfmt, |
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MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE|MP_IMGFLAG_PREFER_ALIGNED_STRIDE, |
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mpi->w,mpi->h); |
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} |
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dmpi= vf->dmpi; |
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if(!(mpi->flags&MP_IMGFLAG_DIRECT)){ |
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memcpy_pic(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h, dmpi->stride[0], mpi->stride[0]); |
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if(mpi->flags&MP_IMGFLAG_PLANAR){ |
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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]); |
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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]); |
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} |
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} |
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ff_vf_clone_mpi_attributes(dmpi, mpi); |
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dmpi->qscale = vf->priv->qp; |
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dmpi->qstride= vf->priv->qp_stride; |
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if(mpi->qscale){ |
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for(y=0; y<((dmpi->h+15)>>4); y++){ |
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for(x=0; x<vf->priv->qp_stride; x++){ |
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dmpi->qscale[x + dmpi->qstride*y]= |
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vf->priv->lut[ 129 + ((int8_t)mpi->qscale[x + mpi->qstride*y]) ]; |
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} |
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} |
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}else{ |
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int qp= vf->priv->lut[0]; |
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for(y=0; y<((dmpi->h+15)>>4); y++){ |
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for(x=0; x<vf->priv->qp_stride; x++){ |
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dmpi->qscale[x + dmpi->qstride*y]= qp; |
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} |
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} |
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} |
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return ff_vf_next_put_image(vf,dmpi, pts); |
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} |
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static void uninit(struct vf_instance *vf){ |
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if(!vf->priv) return; |
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av_free(vf->priv->qp); |
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vf->priv->qp= NULL; |
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av_free(vf->priv); |
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vf->priv=NULL; |
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} |
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//===========================================================================// |
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static int vf_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->uninit=uninit; |
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vf->priv=av_malloc(sizeof(struct vf_priv_s)); |
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memset(vf->priv, 0, sizeof(struct vf_priv_s)); |
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// avcodec_init(); |
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if (args) strncpy(vf->priv->eq, args, 199); |
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return 1; |
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} |
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const vf_info_t ff_vf_info_qp = { |
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"QP changer", |
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"qp", |
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"Michael Niedermayer", |
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"", |
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vf_open, |
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NULL |
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}; |
Paul B Mahol
12 years ago