imported brians code

[nestedvm.git] / src / tests / FTBench.c

diff --git a/src/tests/FTBench.c b/src/tests/FTBench.c
new file mode 100644 (file)
index 0000000..9bb6dac
--- /dev/null
+++ b/src/tests/FTBench.c
@@ -0,0 +1,95 @@
+#include <stdio.h>
+#include <freetype/freetype.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#define FT_Check(expr) do { \
+    if((expr) != 0) { \
+        fprintf(stderr,#expr " failed\n"); \
+        exit(EXIT_FAILURE); \
+    } \
+} while(0)
+
+#define BMP_WIDTH 800
+#define BMP_HEIGHT 600
+
+static char buf[BMP_WIDTH*BMP_HEIGHT];
+
+int main(int argc, char **argv) {
+    char *ttf;
+    char *out;
+    FT_Library library;
+    FT_Face face;
+    FT_GlyphSlot glyph;
+    int num_glyphs;
+    int c;
+    int glyph_index;
+    int loc_x;
+    int loc_y;
+    int glyph_width;
+    int glyph_height;
+    int i,j;
+    int fd;
+    char *p;
+    int n,count;
+    char *glyph_buf;
+    int pixel_size;
+    
+    if(argc < 3) {
+        fprintf(stderr,"Usage: %s ttf bmp\n",argv[0]);
+        exit(1);
+    }
+    
+    ttf = argv[1];
+    out = argv[2];
+    
+    memset(buf,'\377',BMP_WIDTH*BMP_HEIGHT);
+    
+    FT_Check(FT_Init_FreeType(&library));
+    FT_Check(FT_New_Face(library,ttf,0,&face));
+    
+    loc_y = loc_x = 0;
+    for(pixel_size=8;pixel_size<48;pixel_size+=4) {
+        FT_Check(FT_Set_Pixel_Sizes(face,0,pixel_size));
+        for(c=32;c<127;c++) {
+            glyph_index = FT_Get_Char_Index(face,c);
+            FT_Check(FT_Load_Glyph(face,glyph_index,FT_LOAD_DEFAULT));
+            FT_Check(FT_Render_Glyph(face->glyph, ft_render_mode_normal));
+            glyph = face->glyph;
+            glyph_width = glyph->bitmap.width;
+            glyph_height = glyph->bitmap.rows;
+            glyph_buf = glyph->bitmap.buffer;
+            if(loc_x + glyph_width + glyph->bitmap_left >= BMP_WIDTH) {
+                loc_x = 0;
+                loc_y += pixel_size;
+                if(loc_y >= BMP_HEIGHT-pixel_size) goto done;
+            }
+            
+            for(i=0;i<glyph_height;i++)
+                for(j=0;j<glyph_width;j++)
+                    buf[(loc_y+i)*BMP_WIDTH+loc_x+j] &= (~glyph_buf[i*glyph_width+j]);
+            loc_x += face->glyph->advance.x/64;
+        }
+    }
+done:
+    
+    if((fd = open(out,O_CREAT|O_WRONLY,0644)) < 0) {
+        perror("open");
+        exit(1);
+    }
+    p = buf;
+    count = BMP_WIDTH*BMP_HEIGHT;
+    
+    while(count) {
+        n = write(fd,p,count);
+        if(n < 0) {
+            perror("write");
+            exit(1);
+        }
+        count -=n;
+        p += n;
+    }
+    close(fd);
+    
+    return 0;
+}