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#ifdef CREATE_STRUCT_DEFINITIONS
#undef CREATE_STRUCT_DEFINITIONS
#define START(funcname, structname) \
typedef struct structname {
#define GENERIC(type, member) \
type member;
#define FTVECTOR(member) \
FT_Vector member;
#define BITMAPHASHKEY(member) \
BitmapHashKey member;
#define END(typedefnamename) \
} typedefnamename;
#elif defined(CREATE_COMPARISON_FUNCTIONS)
#undef CREATE_COMPARISON_FUNCTIONS
#define START(funcname, structname) \
static int funcname##_compare(void *key1, void *key2, size_t key_size) \
{ \
struct structname *a = key1; \
struct structname *b = key2; \
return // conditions follow
#define GENERIC(type, member) \
a->member == b->member &&
#define FTVECTOR(member) \
a->member.x == b->member.x && a->member.y == b->member.y &&
#define BITMAPHASHKEY(member) \
bitmap_compare(&a->member, &b->member, sizeof(a->member)) &&
#define END(typedefname) \
1; \
}
#elif defined(CREATE_HASH_FUNCTIONS)
#undef CREATE_HASH_FUNCTIONS
#define START(funcname, structname) \
static unsigned funcname##_hash(void *buf, size_t len) \
{ \
struct structname *p = buf; \
unsigned hval = FNV1_32A_INIT;
#define GENERIC(type, member) \
hval = fnv_32a_buf(&p->member, sizeof(p->member), hval);
#define FTVECTOR(member) GENERIC(, member.x); GENERIC(, member.y);
#define BITMAPHASHKEY(member) { \
unsigned temp = bitmap_hash(&p->member, sizeof(p->member)); \
hval = fnv_32a_buf(&temp, sizeof(temp), hval); \
}
#define END(typedefname) \
return hval; \
}
#else
#error missing defines
#endif
// describes a bitmap; bitmaps with equivalents structs are considered identical
START(bitmap, bitmap_hash_key)
GENERIC(char, bitmap) // bool : true = bitmap, false = outline
GENERIC(ASS_Font *, font)
GENERIC(double, size) // font size
GENERIC(uint32_t, ch) // character code
FTVECTOR(outline) // border width, 16.16 fixed point value
GENERIC(int, bold)
GENERIC(int, italic)
GENERIC(char, be) // blur edges
GENERIC(double, blur) // gaussian blur
GENERIC(unsigned, scale_x) // 16.16
GENERIC(unsigned, scale_y) // 16.16
GENERIC(int, frx) // signed 16.16
GENERIC(int, fry) // signed 16.16
GENERIC(int, frz) // signed 16.16
GENERIC(int, fax) // signed 16.16
GENERIC(int, fay) // signed 16.16
// shift vector that was added to glyph before applying rotation
// = 0, if frx = fry = frx = 0
// = (glyph base point) - (rotation origin), otherwise
GENERIC(int, shift_x)
GENERIC(int, shift_y)
FTVECTOR(advance) // subpixel shift vector
FTVECTOR(shadow_offset) // shadow subpixel shift
GENERIC(unsigned, drawing_hash) // hashcode of a drawing
GENERIC(unsigned, flags) // glyph decoration
GENERIC(unsigned, border_style)
END(BitmapHashKey)
// describes an outline glyph
START(glyph, glyph_hash_key)
GENERIC(ASS_Font *, font)
GENERIC(double, size) // font size
GENERIC(uint32_t, ch) // character code
GENERIC(int, bold)
GENERIC(int, italic)
GENERIC(unsigned, scale_x) // 16.16
GENERIC(unsigned, scale_y) // 16.16
FTVECTOR(outline) // border width, 16.16
GENERIC(unsigned, drawing_hash) // hashcode of a drawing
GENERIC(unsigned, flags) // glyph decoration flags
GENERIC(unsigned, border_style)
END(GlyphHashKey)
// Cache for composited bitmaps
START(composite, composite_hash_key)
GENERIC(int, aw)
GENERIC(int, ah)
GENERIC(int, bw)
GENERIC(int, bh)
GENERIC(int, ax)
GENERIC(int, ay)
GENERIC(int, bx)
GENERIC(int, by)
GENERIC(int, as)
GENERIC(int, bs)
GENERIC(unsigned char *, a)
GENERIC(unsigned char *, b)
END(CompositeHashKey)
#undef START
#undef GENERIC
#undef FTVECTOR
#undef BITMAPHASHKEY
#undef END
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