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Code Issues Releases Wiki Activity

dirty fix to get it work with glibc 2.1.x, and changed blur algorithm

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@1472 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
arpi 2001-08-09 17:29:25 +00:00
parent 8e06bb0f13
commit e59978c8ce
1 changed files with 74 additions and 34 deletions
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108
TOOLS/subfont-c/subfont.c
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@ -17,7 +17,7 @@
#include <math.h>
#include <string.h>
#if 1 /* freetype 2.0.1 */
#if 0 /* freetype 2.0.1 */
#include <freetype/freetype.h>
#else /* freetype 2.0.3 */
#include <ft2build.h>
@ -32,16 +32,17 @@
/* coordinates are in 26.6 pixels (i.e. 1/64th of pixels) */
int const test = 0;
int const test = 1;
/* default values */
char *encoding = "iso-8859-1"; /* target encoding */
char *charmap = "ucs-4le"; /* font charmap encoding */
/* gcc 2.1.3 doesn't support ucs-4le, but supports ucs-4 (==ucs-4be) */
char *charmap = "ucs-4"; /* ucs-4le font charmap encoding */
int ppem = 20; /* font size in pixels */
int const colors = 256;
int const maxcolor = 255;
int radius = 6; /* blur radius */
int radius = 2; /* blur radius */
double minalpha = 1.0; /* good value for minalpha is 0.5 */
double alpha_factor = 1.0;
@ -56,7 +57,7 @@ char *font_path = NULL;
unsigned char *buffer;
unsigned char *abuffer;
int width, height;
FT_ULong ustring[256];
static FT_ULong ustring[256];
#define eprintf(...) fprintf(stderr, __VA_ARGS__)
#define ERROR(msg, ...) (eprintf("%s: error: " msg "\n", command, ##__VA_ARGS__), exit(1))
@ -96,14 +97,14 @@ void write_bitmap() {
snprintf(name, max_name, "%s-b.raw", encoding);
f = fopen(name, "wb");
if (f==NULL) ERROR("fopen failed.");
if (f==NULL) ERROR("fopen failed.",NULL);
write_header(f);
fwrite(buffer, 1, width*height, f);
fclose(f);
snprintf(name, max_name, "%s-a.raw", encoding);
f = fopen(name, "wb");
if (f==NULL) ERROR("fopen failed.");
if (f==NULL) ERROR("fopen failed.",NULL);
write_header(f);
fwrite(abuffer, 1, width*height, f);
fclose(f);
@ -125,9 +126,9 @@ void render() {
/* initialize freetype */
error = FT_Init_FreeType(&library);
if (error) ERROR("Init_FreeType failed.");
if (error) ERROR("Init_FreeType failed.",NULL);
error = FT_New_Face(library, font_path, 0, &face);
if (error) ERROR("New_Face failed.");
if (error) ERROR("New_Face failed.",NULL);
/*
if (font_metrics) {
@ -138,7 +139,7 @@ void render() {
if (face->charmap->encoding!=ft_encoding_unicode)
WARNING("Selected font has no unicode charmap. Very bad!");
WARNING("Selected font has no unicode charmap. Very bad!",NULL);
/* set size */
@ -157,22 +158,22 @@ void render() {
WARNING("Selected font is not scalable. Using ppem=%i", face->available_sizes[j].height);
error = FT_Set_Pixel_Sizes(face, face->available_sizes[j].width, face->available_sizes[j].height);
}
if (error) WARNING("Set_Pixel_Sizes failed.");
if (error) WARNING("Set_Pixel_Sizes failed.",NULL);
if (FT_IS_FIXED_WIDTH(face))
WARNING("Selected font is fixed-width.");
WARNING("Selected font is fixed-width.",NULL);
/* compute space advance */
error = FT_Load_Char(face, ' ', load_flags);
if (error) WARNING("spacewidth set to default.");
if (error) WARNING("spacewidth set to default.",NULL);
else space_advance = f266toInt(face->glyph->advance.x); /* +32 is for rounding */
/* create font.desc */
f = fopen("font.desc", "w");
if (f==NULL) ERROR("fopen failed.");
if (f==NULL) ERROR("fopen failed.",NULL);
/* print font.desc header */
fprintf(f, "[info]\n");
@ -242,7 +243,7 @@ void render() {
fclose(f);
if (ymax<=ymin) ERROR("Something went wrong.");
if (ymax<=ymin) ERROR("Something went wrong.",NULL);
width = pen_x;
@ -252,7 +253,7 @@ void render() {
buffer = (unsigned char*)malloc(width*height);
abuffer = (unsigned char*)malloc(width*height);
if (buffer==NULL || abuffer==NULL) ERROR("malloc failed.");
if (buffer==NULL || abuffer==NULL) ERROR("malloc failed.",NULL);
/* render glyphs */
@ -286,7 +287,7 @@ void render() {
error = FT_Done_FreeType(library);
if (error) ERROR("Done_FreeType failed.");
if (error) ERROR("Done_FreeType failed.",NULL);
}
void prepare_charset() {
@ -307,7 +308,7 @@ void prepare_charset() {
iconv_close(cd);
cd = iconv_open(charmap, encoding);
if (cd==(iconv_t)-1) ERROR("Unsupported encoding, use iconv -l to list character sets known on your system.");
if (cd==(iconv_t)-1) ERROR("Unsupported encoding, use iconv -l to list character sets known on your system.",NULL);
while (1) {
count = iconv(cd, &inbuf, &inbuf_left, &outbuf, &outbuf_left);
if (inbuf_left==0) break;
@ -315,50 +316,89 @@ void prepare_charset() {
inbuf+= 1;
inbuf_left-= 1;
*(FT_ULong*)outbuf = 0;
outbuf+= 4;
outbuf+=sizeof(FT_ULong);
}
iconv_close(cd);
/* converting unicodes BE -> LE */
for (i = 0; i<256; ++i){
FT_ULong x=ustring[i];
x= ((x>>24)&255)
| (((x>>16)&255)<<8)
| (((x>> 8)&255)<<16)
| ((x&255)<<24);
ustring[i]=x;
}
}
void blur() {
int const r = radius;
int const w = 2*r+1; /* matrix size */
double const A = log(minalpha/maxcolor)/((r+1)*(r+1));
double const B = alpha_factor * maxcolor;
double const A = log(1.0/maxcolor)/((r+1)*(r+1));
double const B = maxcolor;
int sum=0;
int i, x, y, mx, my;
unsigned char *m = (unsigned char*)malloc(w*w);
if (m==NULL) ERROR("malloc failed");
if (m==NULL) ERROR("malloc failed",NULL);
/* Gaussian matrix */
for (my = 0; my<w; ++my) {
for (mx = 0; mx<w; ++mx) {
m[mx+my*w] = (int)(exp(A * ((mx-r)*(mx-r)+(my-r)*(my-r))) * B + .5);
sum+=m[mx+my*w];
if (test) eprintf("%3i ", m[mx+my*w]);
}
if (test) eprintf("\n");
}
printf("gauss sum = %d\n",sum);
/* This is not a gaussian blur! */
/* And is very slow */
for (y = 0; y<height; ++y)
for (y = 0; y<height; ++y){
for (x = 0; x<width; ++x) {
int max = -1;
float max = 0;
for (my = -r; my<=r; ++my)
if (y+my>=0 && y+my<height)
if (y+my>0 && y+my<height-1)
for (mx = -r; mx<=r; ++mx) {
if (x+mx>=0 && x+mx<width) {
int p = buffer[x+mx+(y+my)*width] * m[mx+r+(my+r)*w];
if (p>max) {
max = p;
abuffer[x+y*width] = (p + maxcolor/2) / maxcolor;
}
if (x+mx>0 && x+mx<width-1) {
// int p = buffer[x+mx+(y+my)*width] * m[mx+r+(my+r)*w];
int p = 0;
p = ( (buffer[x+mx-1+(y+my-1)*width]) +
(buffer[x+mx-1+(y+my+1)*width]) +
(buffer[x+mx+1+(y+my-1)*width]) +
(buffer[x+mx+1+(y+my+1)*width]) )/2 +
( (buffer[x+mx-1+(y+my)*width]) +
(buffer[x+mx+1+(y+my)*width]) +
(buffer[x+mx+(y+my-1)*width]) +
(buffer[x+mx+(y+my+1)*width]) +
(buffer[x+mx+(y+my)*width]) ) ;
if(p>255) p=255;
// p*=m[mx+r+(my+r)*w];
// if (p>max) {
// max = p;
// abuffer[x+y*width] = (p + maxcolor/2) / maxcolor;
// }
//max+=(p + maxcolor/2) / maxcolor;
max+=p*m[mx+r+(my+r)*w]/(float)sum;
}
}
max=max*alpha_factor;
// printf("%5.3f ",max);
if(max>255) max=255;
abuffer[x+y*width] = max;
}
// printf("\n");
}
free(m);
}
@ -400,17 +440,17 @@ void parse_args(int argc, char **argv) {
if (argc>4) {
d = atof(argv[4]);
if (d>0.001 && d<1000.) alpha_factor = d;
else WARNING("alphaFactor set to default.");
else WARNING("alphaFactor set to default.",NULL);
}
if (argc>5) {
d = atof(argv[5]);
if (d>0.1 && d<=maxcolor) minalpha = d;
else WARNING("minAlpha set to default.");
else WARNING("minAlpha set to default.",NULL);
}
if (argc>6) {
i = atoi(argv[6]);
if (i>=0 && i<20) radius = i;
else WARNING("radius set to default.");
else WARNING("radius set to default.",NULL);
}
}