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-rw-r--r--libmpcodecs/vf_perspective.c341
1 files changed, 0 insertions, 341 deletions
diff --git a/libmpcodecs/vf_perspective.c b/libmpcodecs/vf_perspective.c
deleted file mode 100644
index df196bb1c9..0000000000
--- a/libmpcodecs/vf_perspective.c
+++ /dev/null
@@ -1,341 +0,0 @@
-/*
- * Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at>
- *
- * 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.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <inttypes.h>
-#include <assert.h>
-#include <math.h>
-
-#include "config.h"
-#include "mp_msg.h"
-
-#include "libavutil/mem.h"
-
-#include "img_format.h"
-#include "mp_image.h"
-#include "vf.h"
-
-#define SUB_PIXEL_BITS 8
-#define SUB_PIXELS (1<<SUB_PIXEL_BITS)
-#define COEFF_BITS 11
-
-//===========================================================================//
-
-struct vf_priv_s {
- double ref[4][2];
- int32_t coeff[1<<SUB_PIXEL_BITS][4];
- int32_t (*pv)[2];
- int pvStride;
- int cubic;
-};
-
-
-/***************************************************************************/
-
-static void initPv(struct vf_priv_s *priv, int W, int H){
- double a,b,c,d,e,f,g,h,D;
- double (*ref)[2]= priv->ref;
- int x,y;
-
- g= ( (ref[0][0] - ref[1][0] - ref[2][0] + ref[3][0])*(ref[2][1] - ref[3][1])
- - (ref[0][1] - ref[1][1] - ref[2][1] + ref[3][1])*(ref[2][0] - ref[3][0]))*H;
- h= ( (ref[0][1] - ref[1][1] - ref[2][1] + ref[3][1])*(ref[1][0] - ref[3][0])
- - (ref[0][0] - ref[1][0] - ref[2][0] + ref[3][0])*(ref[1][1] - ref[3][1]))*W;
- D= (ref[1][0] - ref[3][0])*(ref[2][1] - ref[3][1])
- - (ref[2][0] - ref[3][0])*(ref[1][1] - ref[3][1]);
-
- a= D*(ref[1][0] - ref[0][0])*H + g*ref[1][0];
- b= D*(ref[2][0] - ref[0][0])*W + h*ref[2][0];
- c= D*ref[0][0]*W*H;
- d= D*(ref[1][1] - ref[0][1])*H + g*ref[1][1];
- e= D*(ref[2][1] - ref[0][1])*W + h*ref[2][1];
- f= D*ref[0][1]*W*H;
-
- for(y=0; y<H; y++){
- for(x=0; x<W; x++){
- int u, v;
-
- u= (int)floor( SUB_PIXELS*(a*x + b*y + c)/(g*x + h*y + D*W*H) + 0.5);
- v= (int)floor( SUB_PIXELS*(d*x + e*y + f)/(g*x + h*y + D*W*H) + 0.5);
-
- priv->pv[x + y*W][0]= u;
- priv->pv[x + y*W][1]= v;
- }
- }
-}
-
-static double getCoeff(double d){
- double A= -0.60;
- double coeff;
-
- d= fabs(d);
-
- // Equation is from VirtualDub
- if(d<1.0)
- coeff = (1.0 - (A+3.0)*d*d + (A+2.0)*d*d*d);
- else if(d<2.0)
- coeff = (-4.0*A + 8.0*A*d - 5.0*A*d*d + A*d*d*d);
- else
- coeff=0.0;
-
- return coeff;
-}
-
-static int config(struct vf_instance *vf,
- int width, int height, int d_width, int d_height,
- unsigned int flags, unsigned int outfmt){
- int i, j;
-
- vf->priv->pvStride= width;
- vf->priv->pv= av_malloc(width*height*2*sizeof(int32_t));
- initPv(vf->priv, width, height);
-
- for(i=0; i<SUB_PIXELS; i++){
- double d= i/(double)SUB_PIXELS;
- double temp[4];
- double sum=0;
-
- for(j=0; j<4; j++)
- temp[j]= getCoeff(j - d - 1);
-
- for(j=0; j<4; j++)
- sum+= temp[j];
-
- for(j=0; j<4; j++)
- vf->priv->coeff[i][j]= (int)floor((1<<COEFF_BITS)*temp[j]/sum + 0.5);
- }
-
- 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->pv);
- vf->priv->pv= NULL;
-
- free(vf->priv);
- vf->priv=NULL;
-}
-
-static inline void resampleCubic(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride, struct vf_priv_s *privParam, int xShift, int yShift){
- int x, y;
- struct vf_priv_s priv= *privParam;
-
- for(y=0; y<h; y++){
- for(x=0; x<w; x++){
- int u, v, subU, subV, sum, sx, sy;
-
- sx= x << xShift;
- sy= y << yShift;
- u= priv.pv[sx + sy*priv.pvStride][0]>>xShift;
- v= priv.pv[sx + sy*priv.pvStride][1]>>yShift;
- subU= u & (SUB_PIXELS-1);
- subV= v & (SUB_PIXELS-1);
- u >>= SUB_PIXEL_BITS;
- v >>= SUB_PIXEL_BITS;
-
- if(u>0 && v>0 && u<w-2 && v<h-2){
- const int index= u + v*srcStride;
- const int a= priv.coeff[subU][0];
- const int b= priv.coeff[subU][1];
- const int c= priv.coeff[subU][2];
- const int d= priv.coeff[subU][3];
-
- sum=
- priv.coeff[subV][0]*( a*src[index - 1 - srcStride] + b*src[index - 0 - srcStride]
- + c*src[index + 1 - srcStride] + d*src[index + 2 - srcStride])
- +priv.coeff[subV][1]*( a*src[index - 1 ] + b*src[index - 0 ]
- + c*src[index + 1 ] + d*src[index + 2 ])
- +priv.coeff[subV][2]*( a*src[index - 1 + srcStride] + b*src[index - 0 + srcStride]
- + c*src[index + 1 + srcStride] + d*src[index + 2 + srcStride])
- +priv.coeff[subV][3]*( a*src[index - 1+2*srcStride] + b*src[index - 0+2*srcStride]
- + c*src[index + 1+2*srcStride] + d*src[index + 2+2*srcStride]);
- }else{
- int dx, dy;
- sum=0;
-
- for(dy=0; dy<4; dy++){
- int iy= v + dy - 1;
- if (iy< 0) iy=0;
- else if(iy>=h) iy=h-1;
- for(dx=0; dx<4; dx++){
- int ix= u + dx - 1;
- if (ix< 0) ix=0;
- else if(ix>=w) ix=w-1;
-
- sum+= priv.coeff[subU][dx]*priv.coeff[subV][dy]
- *src[ ix + iy*srcStride];
- }
- }
- }
- sum= (sum + (1<<(COEFF_BITS*2-1)) ) >> (COEFF_BITS*2);
- if(sum&~255){
- if(sum<0) sum=0;
- else sum=255;
- }
- dst[ x + y*dstStride]= sum;
- }
- }
-}
-
-static inline void resampleLinear(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride,
- struct vf_priv_s *privParam, int xShift, int yShift){
- int x, y;
- struct vf_priv_s priv= *privParam;
-
- for(y=0; y<h; y++){
- for(x=0; x<w; x++){
- int u, v, subU, subV, sum, sx, sy, index, subUI, subVI;
-
- sx= x << xShift;
- sy= y << yShift;
- u= priv.pv[sx + sy*priv.pvStride][0]>>xShift;
- v= priv.pv[sx + sy*priv.pvStride][1]>>yShift;
- subU= u & (SUB_PIXELS-1);
- subV= v & (SUB_PIXELS-1);
- u >>= SUB_PIXEL_BITS;
- v >>= SUB_PIXEL_BITS;
- index= u + v*srcStride;
- subUI= SUB_PIXELS - subU;
- subVI= SUB_PIXELS - subV;
-
- if((unsigned)u < (unsigned)(w - 1)){
- if((unsigned)v < (unsigned)(h - 1)){
- sum= subVI*(subUI*src[index ] + subU*src[index +1])
- +subV *(subUI*src[index+srcStride] + subU*src[index+srcStride+1]);
- sum= (sum + (1<<(SUB_PIXEL_BITS*2-1)) ) >> (SUB_PIXEL_BITS*2);
- }else{
- if(v<0) v= 0;
- else v= h-1;
- index= u + v*srcStride;
- sum= subUI*src[index] + subU*src[index+1];
- sum= (sum + (1<<(SUB_PIXEL_BITS-1)) ) >> SUB_PIXEL_BITS;
- }
- }else{
- if((unsigned)v < (unsigned)(h - 1)){
- if(u<0) u= 0;
- else u= w-1;
- index= u + v*srcStride;
- sum= subVI*src[index] + subV*src[index+srcStride];
- sum= (sum + (1<<(SUB_PIXEL_BITS-1)) ) >> SUB_PIXEL_BITS;
- }else{
- if(u<0) u= 0;
- else u= w-1;
- if(v<0) v= 0;
- else v= h-1;
- index= u + v*srcStride;
- sum= src[index];
- }
- }
- if(sum&~255){
- if(sum<0) sum=0;
- else sum=255;
- }
- dst[ x + y*dstStride]= sum;
- }
- }
-}
-
-static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
- int cw= mpi->w >> mpi->chroma_x_shift;
- int ch= mpi->h >> mpi->chroma_y_shift;
-
- mp_image_t *dmpi=vf_get_image(vf->next,mpi->imgfmt,
- MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
- mpi->w,mpi->h);
-
- assert(mpi->flags&MP_IMGFLAG_PLANAR);
-
- if(vf->priv->cubic){
- resampleCubic(dmpi->planes[0], mpi->planes[0], mpi->w,mpi->h, dmpi->stride[0], mpi->stride[0],
- vf->priv, 0, 0);
- resampleCubic(dmpi->planes[1], mpi->planes[1], cw , ch , dmpi->stride[1], mpi->stride[1],
- vf->priv, mpi->chroma_x_shift, mpi->chroma_y_shift);
- resampleCubic(dmpi->planes[2], mpi->planes[2], cw , ch , dmpi->stride[2], mpi->stride[2],
- vf->priv, mpi->chroma_x_shift, mpi->chroma_y_shift);
- }else{
- resampleLinear(dmpi->planes[0], mpi->planes[0], mpi->w,mpi->h, dmpi->stride[0], mpi->stride[0],
- vf->priv, 0, 0);
- resampleLinear(dmpi->planes[1], mpi->planes[1], cw , ch , dmpi->stride[1], mpi->stride[1],
- vf->priv, mpi->chroma_x_shift, mpi->chroma_y_shift);
- resampleLinear(dmpi->planes[2], mpi->planes[2], cw , ch , dmpi->stride[2], mpi->stride[2],
- vf->priv, mpi->chroma_x_shift, mpi->chroma_y_shift);
- }
-
- return vf_next_put_image(vf,dmpi, pts);
-}
-
-//===========================================================================//
-
-static int query_format(struct vf_instance *vf, unsigned int fmt){
- switch(fmt)
- {
- case IMGFMT_YV12:
- case IMGFMT_I420:
- case IMGFMT_IYUV:
- case IMGFMT_YVU9:
- case IMGFMT_444P:
- case IMGFMT_422P:
- case IMGFMT_411P:
- return vf_next_query_format(vf, fmt);
- }
- return 0;
-}
-
-static int vf_open(vf_instance_t *vf, char *args){
- int e;
-
- 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==NULL) return 0;
-
- e=sscanf(args, "%lf:%lf:%lf:%lf:%lf:%lf:%lf:%lf:%d",
- &vf->priv->ref[0][0], &vf->priv->ref[0][1],
- &vf->priv->ref[1][0], &vf->priv->ref[1][1],
- &vf->priv->ref[2][0], &vf->priv->ref[2][1],
- &vf->priv->ref[3][0], &vf->priv->ref[3][1],
- &vf->priv->cubic
- );
-
- if(e!=9)
- return 0;
-
- return 1;
-}
-
-const vf_info_t vf_info_perspective = {
- "perspective correcture",
- "perspective",
- "Michael Niedermayer",
- "",
- vf_open,
- NULL
-};
-
-//===========================================================================//
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 15:41:04 +0000