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Diffstat (limited to 'libmpcodecs/vf_perspective.c')
-rw-r--r--libmpcodecs/vf_perspective.c46
1 files changed, 23 insertions, 23 deletions
diff --git a/libmpcodecs/vf_perspective.c b/libmpcodecs/vf_perspective.c
index 714763c7cc..8cc3dc8e17 100644
--- a/libmpcodecs/vf_perspective.c
+++ b/libmpcodecs/vf_perspective.c
@@ -64,18 +64,18 @@ static void initPv(struct vf_priv_s *priv, int W, int H){
- (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);
@@ -88,7 +88,7 @@ static void initPv(struct vf_priv_s *priv, int W, int H){
static double getCoeff(double d){
double A= -0.60;
double coeff;
-
+
d= fabs(d);
// Equation is from VirtualDub
@@ -98,7 +98,7 @@ static double getCoeff(double d){
coeff = (-4.0*A + 8.0*A*d - 5.0*A*d*d + A*d*d*d);
else
coeff=0.0;
-
+
return coeff;
}
@@ -110,18 +110,18 @@ static int config(struct vf_instance_s* vf,
vf->priv->pvStride= width;
vf->priv->pv= (void*)memalign(8, 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);
}
@@ -142,7 +142,7 @@ static void uninit(struct vf_instance_s* vf){
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;
@@ -162,7 +162,7 @@ static inline void resampleCubic(uint8_t *dst, uint8_t *src, int w, int h, int d
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])
@@ -184,7 +184,7 @@ static inline void resampleCubic(uint8_t *dst, uint8_t *src, int w, int h, int d
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];
}
@@ -200,11 +200,11 @@ static inline void resampleCubic(uint8_t *dst, uint8_t *src, int w, int h, int d
}
}
-static inline void resampleLinear(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride,
+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;
@@ -220,7 +220,7 @@ static inline void resampleLinear(uint8_t *dst, uint8_t *src, int w, int h, int
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])
@@ -267,20 +267,20 @@ static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts){
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],
+ 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],
+ 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],
+ 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],
+ 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],
+ 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],
+ 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);
}
@@ -316,7 +316,7 @@ static int open(vf_instance_t *vf, char* args){
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],
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 17:08:06 +0000