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(int, face_index)
  91     GENERIC(int, glyph_index)
  92     GENERIC(int, bold)
  93     GENERIC(int, italic)
  94     GENERIC(unsigned, scale_x) // 16.16
  95     GENERIC(unsigned, scale_y) // 16.16
  96     FTVECTOR(outline) // border width, 16.16
  97     GENERIC(unsigned, flags)    // glyph decoration flags
  98     GENERIC(unsigned, border_style)
  99 END(GlyphHashKey)
 100
 101 START(glyph_metrics, glyph_metrics_hash_key)
 102     GENERIC(ASS_Font *, font)
 103     GENERIC(double, size)
 104     GENERIC(int, face_index)
 105     GENERIC(int, glyph_index)
 106     GENERIC(unsigned, scale_x)
 107     GENERIC(unsigned, scale_y)
 108 END(GlyphMetricsHashKey)
 109
 110 // describes an outline drawing
 111 START(drawing, drawing_hash_key)
 112     GENERIC(unsigned, scale_x)
 113     GENERIC(unsigned, scale_y)
 114     GENERIC(int, pbo)
 115     FTVECTOR(outline)
 116     GENERIC(unsigned, border_style)
 117     GENERIC(int, scale)
 118     GENERIC(unsigned, hash)
 119     STRING(text)
 120 END(DrawingHashKey)
 121
 122 // Cache for composited bitmaps
 123 START(composite, composite_hash_key)
 124     GENERIC(int, aw)
 125     GENERIC(int, ah)
 126     GENERIC(int, bw)
 127     GENERIC(int, bh)
 128     GENERIC(int, ax)
 129     GENERIC(int, ay)
 130     GENERIC(int, bx)
 131     GENERIC(int, by)
 132     GENERIC(int, as)
 133     GENERIC(int, bs)
 134     GENERIC(unsigned char *, a)
 135     GENERIC(unsigned char *, b)
 136 END(CompositeHashKey)
 137
 138
 139 #undef START
 140 #undef GENERIC
 141 #undef STRING
 142 #undef FTVECTOR
 143 #undef BITMAPHASHKEY
 144 #undef END