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// This example uses the FreeType rendering library to print
// the MurmurHash3 hash value of the 8-bit anti-aliased
// bitmaps of all the glyphs in the font.
#include "bitmap.h" // The header file
int main(int argc, char const *argv[])
{
FT_Library library;
FT_Face face;
FT_GlyphSlot slot;
FT_Bitmap* bitmap;
FT_Error error;
const char* filename;
FT_UInt32 size;
if (argc != 3)
{
printf("This program prints the hashes of 8-bit grayscale\n");
printf("anti-aliased bitmaps of all the glyphs in a font\n\n");
printf("Usage ./<exe> <font_file> <pt_size>\n\n");
exit(0);
}
filename = argv[1];
size = atoi(argv[2]);
error = FT_Init_FreeType( &library );
if(error){
printf("Error while initialising library\n");
}
error = FT_New_Face( library,
filename,
0,
&face );
if(error){
printf("Error loading new face\n");
}
error = FT_Set_Char_Size( face,
size * 64,
0,
100,
0 );
if(error){
printf("Error setting character size\n");
}
slot = face->glyph;
for (int i = 0; i < face->num_glyphs; ++i) // Loop
{
error = FT_Load_Glyph( face,
i,
FT_LOAD_DEFAULT);
if(error){
printf("Error loading glyph\n");
}
FT_Render_Glyph( slot,
FT_RENDER_MODE_NORMAL);
if(error){
printf("Error rendering the glyph\n");
}
bitmap = &slot->bitmap;
if (bitmap->width == 0|| bitmap->rows == 0)
{
printf("%d - Empty Glyph\n",i);
continue;
}
HASH_128 * murmur = (HASH_128 *) malloc(sizeof(HASH_128)) ;
murmur = Generate_Hash_x64_128(bitmap,murmur);
printf("%d - %08x %08x %08x %08x\n",i,
murmur->hash[0],
murmur->hash[1],
murmur->hash[2],
murmur->hash[3]);
}
FT_Done_Face ( face );
FT_Done_FreeType( library );
return 0;
}
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