libass/ass_cache_template.h

   1 #ifdef CREATE_STRUCT_DEFINITIONS
   2 #undef CREATE_STRUCT_DEFINITIONS
   3 #define START(funcname, structname) \
   4     typedef struct structname {
   5 #define GENERIC(type, member) \
   6         type member;
   7 #define STRING(member) \
   8         char *member;
   9 #define FTVECTOR(member) \
  10         FT_Vector member;
  11 #define BITMAPHASHKEY(member) \
  12         BitmapHashKey member;
  13 #define END(typedefnamename) \
  14     } typedefnamename;
  15
  16 #elif defined(CREATE_COMPARISON_FUNCTIONS)
  17 #undef CREATE_COMPARISON_FUNCTIONS
  18 #define START(funcname, structname) \
  19     static unsigned funcname##_compare(void *key1, void *key2, size_t key_size) \
  20     { \
  21         struct structname *a = key1; \
  22         struct structname *b = key2; \
  23         return // conditions follow
  24 #define GENERIC(type, member) \
  25             a->member == b->member &&
  26 #define STRING(member) \
  27             strcmp(a->member, b->member) == 0 &&
  28 #define FTVECTOR(member) \
  29             a->member.x == b->member.x && a->member.y == b->member.y &&
  30 #define BITMAPHASHKEY(member) \
  31             bitmap_compare(&a->member, &b->member, sizeof(a->member)) &&
  32 #define END(typedefname) \
  33             1; \
  34     }
  35
  36 #elif defined(CREATE_HASH_FUNCTIONS)
  37 #undef CREATE_HASH_FUNCTIONS
  38 #define START(funcname, structname) \
  39     static unsigned funcname##_hash(void *buf, size_t len) \
  40     { \
  41         struct structname *p = buf; \
  42         unsigned hval = FNV1_32A_INIT;
  43 #define GENERIC(type, member) \
  44         hval = fnv_32a_buf(&p->member, sizeof(p->member), hval);
  45 #define STRING(member) \
  46         hval = fnv_32a_str(p->member, hval);
  47 #define FTVECTOR(member) GENERIC(, member.x); GENERIC(, member.y);
  48 #define BITMAPHASHKEY(member) { \
  49         unsigned temp = bitmap_hash(&p->member, sizeof(p->member)); \
  50         hval = fnv_32a_buf(&temp, sizeof(temp), hval); \
  51         }
  52 #define END(typedefname) \
  53         return hval; \
  54     }
  55
  56 #else
  57 #error missing defines
  58 #endif
  59
  60
  61
  62 // describes an outline bitmap
  63 START(outline_bitmap, outline_bitmap_hash_key)
  64     GENERIC(OutlineHashValue *, outline)
  65     GENERIC(char, be) // blur edges
  66     GENERIC(double, blur) // gaussian blur
  67     GENERIC(int, frx) // signed 16.16
  68     GENERIC(int, fry) // signed 16.16
  69     GENERIC(int, frz) // signed 16.16
  70     GENERIC(int, fax) // signed 16.16
  71     GENERIC(int, fay) // signed 16.16
  72     // shift vector that was added to glyph before applying rotation
  73     // = 0, if frx = fry = frx = 0
  74     // = (glyph base point) - (rotation origin), otherwise
  75     GENERIC(int, shift_x)
  76     GENERIC(int, shift_y)
  77     FTVECTOR(advance) // subpixel shift vector
  78     FTVECTOR(shadow_offset) // shadow subpixel shift
  79 END(OutlineBitmapHashKey)
  80
  81 // describe a clip mask bitmap
  82 START(clip_bitmap, clip_bitmap_hash_key)
  83     STRING(text)
  84 END(ClipMaskHashKey)
  85
  86 // describes an outline glyph
  87 START(glyph, glyph_hash_key)
  88     GENERIC(ASS_Font *, font)
  89     GENERIC(double, size) // font size
  90     GENERIC(uint32_t, ch) // character code
  91     GENERIC(int, bold)
  92     GENERIC(int, italic)
  93     GENERIC(unsigned, scale_x) // 16.16
  94     GENERIC(unsigned, scale_y) // 16.16
  95     FTVECTOR(outline) // border width, 16.16
  96     GENERIC(unsigned, flags)    // glyph decoration flags
  97     GENERIC(unsigned, border_style)
  98 END(GlyphHashKey)
  99
 100 // describes an outline drawing
 101 START(drawing, drawing_hash_key)
 102     GENERIC(unsigned, scale_x)
 103     GENERIC(unsigned, scale_y)
 104     GENERIC(int, pbo)
 105     FTVECTOR(outline)
 106     GENERIC(unsigned, border_style)
 107     GENERIC(int, scale)
 108     GENERIC(unsigned, hash)
 109     STRING(text)
 110 END(DrawingHashKey)
 111
 112 // Cache for composited bitmaps
 113 START(composite, composite_hash_key)
 114     GENERIC(int, aw)
 115     GENERIC(int, ah)
 116     GENERIC(int, bw)
 117     GENERIC(int, bh)
 118     GENERIC(int, ax)
 119     GENERIC(int, ay)
 120     GENERIC(int, bx)
 121     GENERIC(int, by)
 122     GENERIC(int, as)
 123     GENERIC(int, bs)
 124     GENERIC(unsigned char *, a)
 125     GENERIC(unsigned char *, b)
 126 END(CompositeHashKey)
 127
 128
 129 #undef START
 130 #undef GENERIC
 131 #undef STRING
 132 #undef FTVECTOR
 133 #undef BITMAPHASHKEY
 134 #undef END