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more optimization

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@1475 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
arpi 2001-08-09 20:07:45 +00:00
parent 50a05a93da
commit cb28f52567
1 changed files with 28 additions and 13 deletions
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41
TOOLS/subfont-c/subfont.c
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@ -55,6 +55,7 @@ char *font_path = NULL;
unsigned char *buffer;
unsigned char *ebuffer; // temporary buffer for alphamap creation (edges)
unsigned char *abuffer;
int width, height;
static FT_ULong ustring[256];
@ -252,6 +253,7 @@ void render() {
eprintf("bitmap size: %ix%i\n", width, height);
buffer = (unsigned char*)malloc(width*height);
ebuffer = (unsigned char*)malloc(width*height);
abuffer = (unsigned char*)malloc(width*height);
if (buffer==NULL || abuffer==NULL) ERROR("malloc failed.",NULL);
@ -358,15 +360,13 @@ void blur() {
/* This is not a gaussian blur! */
/* And is very slow */
for (y = 0; y<height; ++y){
for (x = 0; x<width; ++x) {
float max = 0;
for (my = -r; my<=r; ++my)
if (y+my>0 && y+my<height-1){
int ay=(y+my)*width;
for (mx = -r; mx<=r; ++mx) {
int ax=x+mx;
if (ax>0 && ax<width-1) {
// PASS-1 : build edge mask:
memset(ebuffer,0,width*height); // clear
for (y = 1; y<height-1; ++y){
int ay=y*width;
int ax;
for (ax = 1; ax<width-1; ++ax) {
int p =
( (buffer[ax-1+ay-width]) +
@ -381,11 +381,25 @@ void blur() {
(buffer[ax+ay]) ) ;
max+=(p>255?255:p)*m[mx+r+(my+r)*w];
}
}
ebuffer[ax+ay]=(p>255)?255:p;
}
// printf("\n");
}
// PASS-2 : blur
for (y = 0; y<height; ++y){
for (x = 0; x<width; ++x) {
float max = 0;
for (my = -r; my<=r; ++my){
int ay=y+my;
if(ay>0 && ay<height){
int by=r+(my+r)*w;
ay*=width;
for (mx = -r; mx<=r; ++mx)
if(x+mx>0 && x+mx<width)
max+=ebuffer[x+mx+ay]*m[mx+by];
}
}
max*=alpha_factor/(float)sum;
// printf("%5.3f ",max);
if(max>255) max=255;
@ -393,6 +407,7 @@ void blur() {
}
// printf("\n");
}
free(m);
}