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mpv/libvo/font_load.c
arpi c8b0ddfe4e these patches let ,,oldstyle'' and freetype subtitle renderers live 
together happily. if an oldstyle subtitle (font.desc) is found, it will
be used. otherwise mplayer will choose subfont.ttf, if freetype was
detected during ./configure.
(also you can use -font /path/to/font.desc and -font /path/to/foobar.ttf too)
patch-set by Wojtek Kaniewski <wojtekka@bydg.pdi.net>


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@8636 b3059339-0415-0410-9bf9-f77b7e298cf2
2002-12-29 14:59:23 +00:00

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#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "font_load.h"
extern char *get_path ( char * );
raw_file* load_raw(char *name,int verbose){
int bpp;
raw_file* raw=malloc(sizeof(raw_file));
unsigned char head[32];
FILE *f=fopen(name,"rb");
if(!f) return NULL; // can't open
if(fread(head,32,1,f)<1) return NULL; // too small
if(memcmp(head,"mhwanh",6)) return NULL; // not raw file
raw->w=head[8]*256+head[9];
raw->h=head[10]*256+head[11];
raw->c=head[12]*256+head[13];
if(raw->w == 0) // 2 bytes were not enough for the width... read 4 bytes from the end of the header
raw->w = ((head[28]*0x100 + head[29])*0x100 + head[30])*0x100 + head[31];
if(raw->c>256) return NULL; // too many colors!?
if(verbose) printf("RAW: %s %d x %d, %d colors\n",name,raw->w,raw->h,raw->c);
if(raw->c){
raw->pal=malloc(raw->c*3);
fread(raw->pal,3,raw->c,f);
bpp=1;
} else {
raw->pal=NULL;
bpp=3;
}
raw->bmp=malloc(raw->h*raw->w*bpp);
fread(raw->bmp,raw->h*raw->w*bpp,1,f);
fclose(f);
return raw;
}
extern int sub_unicode;
font_desc_t* read_font_desc(char* fname,float factor,int verbose){
unsigned char sor[1024];
unsigned char sor2[1024];
font_desc_t *desc;
FILE *f;
char *dn;
struct stat fstate;
char section[64];
int i,j;
int chardb=0;
int fontdb=-1;
int version=0;
int first=1;
desc=malloc(sizeof(font_desc_t));if(!desc) return NULL;
memset(desc,0,sizeof(font_desc_t));
f=fopen(fname,"rt");if(!f){ printf("font: can't open file: %s\n",fname); return NULL;}
i = strlen (fname) - 9;
if ((dn = malloc(i+1))){
strncpy (dn, fname, i);
dn[i]='\0';
}
desc->fpath = dn; // search in the same dir as fonts.desc
// desc->fpath=get_path("font/");
// if (stat(desc->fpath, &fstate)!=0) desc->fpath=DATADIR"/font";
// set up some defaults, and erase table
desc->charspace=2;
desc->spacewidth=12;
desc->height=0;
for(i=0;i<512;i++) desc->start[i]=desc->width[i]=desc->font[i]=-1;
section[0]=0;
while(fgets(sor,1020,f)){
unsigned char* p[8];
int pdb=0;
unsigned char *s=sor;
unsigned char *d=sor2;
int ec=' ';
int id=0;
sor[1020]=0;
/* skip files that look like: TTF (0x00, 0x01), PFM (0x00, 0x01), PFB
* (0x80, 0x01), PCF (0x01, 0x66), fon ("MZ"), gzipped (0x1f, 0x8b) */
if (first) {
if (!sor[0] || sor[1] == 1 || (sor[0] == 'M' && sor[1] == 'Z') || (sor[0] == 0x1f && sor[1] == 0x8b) || (sor[0] == 1 && sor[1] == 0x66)) {
printf("%s doesn't look like a font description, ignoring\n", fname);
fclose(f);
free(desc);
free(dn);
return NULL;
}
first = 0;
}
p[0]=d;++pdb;
while(1){
int c=*s++;
if(c==0 || c==13 || c==10) break;
if(!id){
if(c==39 || c==34){ id=c;continue;} // idezojel
if(c==';' || c=='#') break;
if(c==9) c=' ';
if(c==' '){
if(ec==' ') continue;
*d=0; ++d;
p[pdb]=d;++pdb;
if(pdb>=8) break;
continue;
}
} else {
if(id==c){ id=0;continue;} // idezojel
}
*d=c;d++;
ec=c;
}
if(d==sor2) continue; // skip empty lines
*d=0;
// printf("params=%d sor=%s\n",pdb,sor);
// for(i=0;i<pdb;i++) printf(" param %d = '%s'\n",i,p[i]);
if(pdb==1 && p[0][0]=='['){
int len=strlen(p[0]);
if(len && len<63 && p[0][len-1]==']'){
strcpy(section,p[0]);
if(verbose) printf("font: Reading section: %s\n",section);
if(strcmp(section,"[files]")==0){
++fontdb;
if(fontdb>=16){ printf("font: Too many bitmaps defined!\n");return NULL;}
}
continue;
}
}
if(strcmp(section,"[fpath]")==0){
if(pdb==1){
if (desc->fpath)
free (desc->fpath); // release previously allocated memory
desc->fpath=strdup(p[0]);
continue;
}
} else
if(strcmp(section,"[files]")==0){
char *default_dir=DATADIR"/font";
if(pdb==2 && strcmp(p[0],"alpha")==0){
char *cp;
if (!(cp=malloc(strlen(desc->fpath)+strlen(p[1])+2))) return NULL;
snprintf(cp,strlen(desc->fpath)+strlen(p[1])+2,"%s/%s",
desc->fpath,p[1]);
if(!((desc->pic_a[fontdb]=load_raw(cp,verbose)))){
free(cp);
if (!(cp=malloc(strlen(default_dir)+strlen(p[1])+2)))
return NULL;
snprintf(cp,strlen(default_dir)+strlen(p[1])+2,"%s/%s",
default_dir,p[1]);
if (!((desc->pic_a[fontdb]=load_raw(cp,verbose)))){
printf("Can't load font bitmap: %s\n",p[1]);
free(cp);
return NULL;
}
}
free(cp);
continue;
}
if(pdb==2 && strcmp(p[0],"bitmap")==0){
char *cp;
if (!(cp=malloc(strlen(desc->fpath)+strlen(p[1])+2))) return NULL;
snprintf(cp,strlen(desc->fpath)+strlen(p[1])+2,"%s/%s",
desc->fpath,p[1]);
if(!((desc->pic_b[fontdb]=load_raw(cp,verbose)))){
free(cp);
if (!(cp=malloc(strlen(default_dir)+strlen(p[1])+2)))
return NULL;
snprintf(cp,strlen(default_dir)+strlen(p[1])+2,"%s/%s",
default_dir,p[1]);
if (!((desc->pic_b[fontdb]=load_raw(cp,verbose)))){
printf("Can't load font bitmap: %s\n",p[1]);
free(cp);
return NULL;
}
}
free(cp);
continue;
}
} else
if(strcmp(section,"[info]")==0){
if(pdb==2 && strcmp(p[0],"name")==0){
desc->name=strdup(p[1]);
continue;
}
if(pdb==2 && strcmp(p[0],"descversion")==0){
version=atoi(p[1]);
continue;
}
if(pdb==2 && strcmp(p[0],"spacewidth")==0){
desc->spacewidth=atoi(p[1]);
continue;
}
if(pdb==2 && strcmp(p[0],"charspace")==0){
desc->charspace=atoi(p[1]);
continue;
}
if(pdb==2 && strcmp(p[0],"height")==0){
desc->height=atoi(p[1]);
continue;
}
} else
if(strcmp(section,"[characters]")==0){
if(pdb==3){
int chr=p[0][0];
int start=atoi(p[1]);
int end=atoi(p[2]);
if(sub_unicode && (chr>=0x80)) chr=(chr<<8)+p[0][1];
else if(strlen(p[0])!=1) chr=strtol(p[0],NULL,0);
if(end<start) {
printf("error in font desc: end<start for char '%c'\n",chr);
} else {
desc->start[chr]=start;
desc->width[chr]=end-start+1;
desc->font[chr]=fontdb;
// printf("char %d '%c' start=%d width=%d\n",chr,chr,desc->start[chr],desc->width[chr]);
++chardb;
}
continue;
}
}
printf("Syntax error in font desc: %s\n",sor);
}
fclose(f);
//printf("font: pos of U = %d\n",desc->start[218]);
for(i=0;i<=fontdb;i++){
if(!desc->pic_a[i] || !desc->pic_b[i]){
printf("font: Missing bitmap(s) for sub-font #%d\n",i);
return NULL;
}
//if(factor!=1.0f)
{
// re-sample alpha
int f=factor*256.0f;
int size=desc->pic_a[i]->w*desc->pic_a[i]->h;
int j;
if(verbose) printf("font: resampling alpha by factor %5.3f (%d) ",factor,f);fflush(stdout);
for(j=0;j<size;j++){
int x=desc->pic_a[i]->bmp[j]; // alpha
int y=desc->pic_b[i]->bmp[j]; // bitmap
#ifdef FAST_OSD
x=(x<(255-f))?0:1;
#else
x=255-((x*f)>>8); // scale
//if(x<0) x=0; else if(x>255) x=255;
//x^=255; // invert
if(x+y>255) x=255-y; // to avoid overflows
//x=0;
//x=((x*f*(255-y))>>16);
//x=((x*f*(255-y))>>16)+y;
//x=(x*f)>>8;if(x<y) x=y;
if(x<1) x=1; else
if(x>=252) x=0;
#endif
desc->pic_a[i]->bmp[j]=x;
// desc->pic_b[i]->bmp[j]=0; // hack
}
if(verbose) printf("DONE!\n");
}
if(!desc->height) desc->height=desc->pic_a[i]->h;
}
j='_';if(desc->font[j]<0) j='?';
for(i=0;i<512;i++)
if(desc->font[i]<0){
desc->start[i]=desc->start[j];
desc->width[i]=desc->width[j];
desc->font[i]=desc->font[j];
}
desc->font[' ']=-1;
desc->width[' ']=desc->spacewidth;
printf("Font %s loaded successfully! (%d chars)\n",fname,chardb);
return desc;
}
#if 0
int main(){
read_font_desc("high_arpi.desc",1);
}
#endif
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