subtitle+OSD font support

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@214 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 191 insertions, 0 deletions

diff --git a/libvo/font_load.c b/libvo/font_load.c
new file mode 100644
index 0000000000..3f87ef044f
--- /dev/null
+++ b/libvo/font_load.c
@@ -0,0 +1,191 @@
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "font_load.h"
+
+raw_file* load_raw(char *name){
+    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->c>256) return NULL;                 // too many colors!?
+    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;
+}
+
+font_desc_t* read_font_desc(char* fname){
+unsigned char sor[1024];
+unsigned char sor2[1024];
+font_desc_t *desc;
+FILE *f;
+char section[64];
+int i,j;
+int chardb=0;
+int fontdb=-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;}
+
+// 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;
+  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]);
+        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,"[files]")==0){
+      if(pdb==2 && strcmp(p[0],"alpha")==0){
+          if(!((desc->pic_a[fontdb]=load_raw(p[1])))){
+                printf("Can't load font bitmap: %s\n",p[1]);
+                return NULL;
+          }
+          continue;
+      }
+      if(pdb==2 && strcmp(p[0],"bitmap")==0){
+          if(!((desc->pic_b[fontdb]=load_raw(p[1])))){
+                printf("Can't load font bitmap: %s\n",p[1]);
+                return NULL;
+          }
+          continue;
+      }
+  } else
+
+  if(strcmp(section,"[info]")==0){
+      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 && strlen(p[0])==1){
+          int chr=p[0][0];
+          int start=atoi(p[1]);
+          int end=atoi(p[2]);
+          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(!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: Font %s loaded successfully! (%d chars)\n",fname,chardb);
+
+return desc;
+}
+
+#if 0
+int main(){
+
+read_font_desc("high_arpi.desc");
+
+}
+#endif