?? ttinterp.c
字號:
/* INS_$9C */ PACK( 0, 0 ), /* INS_$9D */ PACK( 0, 0 ), /* INS_$9E */ PACK( 0, 0 ), /* INS_$9F */ PACK( 0, 0 ), /* INS_$A0 */ PACK( 0, 0 ), /* INS_$A1 */ PACK( 0, 0 ), /* INS_$A2 */ PACK( 0, 0 ), /* INS_$A3 */ PACK( 0, 0 ), /* INS_$A4 */ PACK( 0, 0 ), /* INS_$A5 */ PACK( 0, 0 ), /* INS_$A6 */ PACK( 0, 0 ), /* INS_$A7 */ PACK( 0, 0 ), /* INS_$A8 */ PACK( 0, 0 ), /* INS_$A9 */ PACK( 0, 0 ), /* INS_$AA */ PACK( 0, 0 ), /* INS_$AB */ PACK( 0, 0 ), /* INS_$AC */ PACK( 0, 0 ), /* INS_$AD */ PACK( 0, 0 ), /* INS_$AE */ PACK( 0, 0 ), /* INS_$AF */ PACK( 0, 0 ), /* PushB[0] */ PACK( 0, 1 ), /* PushB[1] */ PACK( 0, 2 ), /* PushB[2] */ PACK( 0, 3 ), /* PushB[3] */ PACK( 0, 4 ), /* PushB[4] */ PACK( 0, 5 ), /* PushB[5] */ PACK( 0, 6 ), /* PushB[6] */ PACK( 0, 7 ), /* PushB[7] */ PACK( 0, 8 ), /* PushW[0] */ PACK( 0, 1 ), /* PushW[1] */ PACK( 0, 2 ), /* PushW[2] */ PACK( 0, 3 ), /* PushW[3] */ PACK( 0, 4 ), /* PushW[4] */ PACK( 0, 5 ), /* PushW[5] */ PACK( 0, 6 ), /* PushW[6] */ PACK( 0, 7 ), /* PushW[7] */ PACK( 0, 8 ), /* MDRP[00] */ PACK( 1, 0 ), /* MDRP[01] */ PACK( 1, 0 ), /* MDRP[02] */ PACK( 1, 0 ), /* MDRP[03] */ PACK( 1, 0 ), /* MDRP[04] */ PACK( 1, 0 ), /* MDRP[05] */ PACK( 1, 0 ), /* MDRP[06] */ PACK( 1, 0 ), /* MDRP[07] */ PACK( 1, 0 ), /* MDRP[08] */ PACK( 1, 0 ), /* MDRP[09] */ PACK( 1, 0 ), /* MDRP[10] */ PACK( 1, 0 ), /* MDRP[11] */ PACK( 1, 0 ), /* MDRP[12] */ PACK( 1, 0 ), /* MDRP[13] */ PACK( 1, 0 ), /* MDRP[14] */ PACK( 1, 0 ), /* MDRP[15] */ PACK( 1, 0 ), /* MDRP[16] */ PACK( 1, 0 ), /* MDRP[17] */ PACK( 1, 0 ), /* MDRP[18] */ PACK( 1, 0 ), /* MDRP[19] */ PACK( 1, 0 ), /* MDRP[20] */ PACK( 1, 0 ), /* MDRP[21] */ PACK( 1, 0 ), /* MDRP[22] */ PACK( 1, 0 ), /* MDRP[23] */ PACK( 1, 0 ), /* MDRP[24] */ PACK( 1, 0 ), /* MDRP[25] */ PACK( 1, 0 ), /* MDRP[26] */ PACK( 1, 0 ), /* MDRP[27] */ PACK( 1, 0 ), /* MDRP[28] */ PACK( 1, 0 ), /* MDRP[29] */ PACK( 1, 0 ), /* MDRP[30] */ PACK( 1, 0 ), /* MDRP[31] */ PACK( 1, 0 ), /* MIRP[00] */ PACK( 2, 0 ), /* MIRP[01] */ PACK( 2, 0 ), /* MIRP[02] */ PACK( 2, 0 ), /* MIRP[03] */ PACK( 2, 0 ), /* MIRP[04] */ PACK( 2, 0 ), /* MIRP[05] */ PACK( 2, 0 ), /* MIRP[06] */ PACK( 2, 0 ), /* MIRP[07] */ PACK( 2, 0 ), /* MIRP[08] */ PACK( 2, 0 ), /* MIRP[09] */ PACK( 2, 0 ), /* MIRP[10] */ PACK( 2, 0 ), /* MIRP[11] */ PACK( 2, 0 ), /* MIRP[12] */ PACK( 2, 0 ), /* MIRP[13] */ PACK( 2, 0 ), /* MIRP[14] */ PACK( 2, 0 ), /* MIRP[15] */ PACK( 2, 0 ), /* MIRP[16] */ PACK( 2, 0 ), /* MIRP[17] */ PACK( 2, 0 ), /* MIRP[18] */ PACK( 2, 0 ), /* MIRP[19] */ PACK( 2, 0 ), /* MIRP[20] */ PACK( 2, 0 ), /* MIRP[21] */ PACK( 2, 0 ), /* MIRP[22] */ PACK( 2, 0 ), /* MIRP[23] */ PACK( 2, 0 ), /* MIRP[24] */ PACK( 2, 0 ), /* MIRP[25] */ PACK( 2, 0 ), /* MIRP[26] */ PACK( 2, 0 ), /* MIRP[27] */ PACK( 2, 0 ), /* MIRP[28] */ PACK( 2, 0 ), /* MIRP[29] */ PACK( 2, 0 ), /* MIRP[30] */ PACK( 2, 0 ), /* MIRP[31] */ PACK( 2, 0 ) }; static const FT_Char opcode_length[256] = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, -1,-1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 3, 5, 7, 9, 11,13,15,17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }; static const FT_Vector Null_Vector = {0,0};#undef PACK#undef NULL_Vector#define NULL_Vector (FT_Vector*)&Null_Vector /* compute (a*b)/2^14 with maximal accuracy and rounding */ static FT_Int32 TT_MulFix14( FT_Int32 a, FT_Int b ) { FT_Int32 m, s, hi; FT_UInt32 l, lo; /* compute ax*bx as 64-bit value */ l = (FT_UInt32)( ( a & 0xFFFFU ) * b ); m = ( a >> 16 ) * b; lo = l + (FT_UInt32)( m << 16 ); hi = ( m >> 16 ) + ( (FT_Int32)l >> 31 ) + ( lo < l ); /* divide the result by 2^14 with rounding */ s = hi >> 31; l = lo + (FT_UInt32)s; hi += s + ( l < lo ); lo = l; l = lo + 0x2000U; hi += (l < lo); return ( hi << 18 ) | ( l >> 14 ); } /* compute (ax*bx+ay*by)/2^14 with maximal accuracy and rounding */ static FT_Int32 TT_DotFix14( FT_Int32 ax, FT_Int32 ay, FT_Int bx, FT_Int by ) { FT_Int32 m, s, hi1, hi2, hi; FT_UInt32 l, lo1, lo2, lo; /* compute ax*bx as 64-bit value */ l = (FT_UInt32)( ( ax & 0xFFFFU ) * bx ); m = ( ax >> 16 ) * bx; lo1 = l + (FT_UInt32)( m << 16 ); hi1 = ( m >> 16 ) + ( (FT_Int32)l >> 31 ) + ( lo1 < l ); /* compute ay*by as 64-bit value */ l = (FT_UInt32)( ( ay & 0xFFFFU ) * by ); m = ( ay >> 16 ) * by; lo2 = l + (FT_UInt32)( m << 16 ); hi2 = ( m >> 16 ) + ( (FT_Int32)l >> 31 ) + ( lo2 < l ); /* add them */ lo = lo1 + lo2; hi = hi1 + hi2 + ( lo < lo1 ); /* divide the result by 2^14 with rounding */ s = hi >> 31; l = lo + (FT_UInt32)s; hi += s + ( l < lo ); lo = l; l = lo + 0x2000U; hi += ( l < lo ); return ( hi << 18 ) | ( l >> 14 ); } /* return length of given vector */#if 0 static FT_Int32 TT_VecLen( FT_Int32 x, FT_Int32 y ) { FT_Int32 m, hi1, hi2, hi; FT_UInt32 l, lo1, lo2, lo; /* compute x*x as 64-bit value */ lo = (FT_UInt32)( x & 0xFFFFU ); hi = x >> 16; l = lo * lo; m = hi * lo; hi = hi * hi; lo1 = l + (FT_UInt32)( m << 17 ); hi1 = hi + ( m >> 15 ) + ( lo1 < l ); /* compute y*y as 64-bit value */ lo = (FT_UInt32)( y & 0xFFFFU ); hi = y >> 16; l = lo * lo; m = hi * lo; hi = hi * hi; lo2 = l + (FT_UInt32)( m << 17 ); hi2 = hi + ( m >> 15 ) + ( lo2 < l ); /* add them to get 'x*x+y*y' as 64-bit value */ lo = lo1 + lo2; hi = hi1 + hi2 + ( lo < lo1 ); /* compute the square root of this value */ { FT_UInt32 root, rem, test_div; FT_Int count; root = 0; { rem = 0; count = 32; do { rem = ( rem << 2 ) | ( (FT_UInt32)hi >> 30 ); hi = ( hi << 2 ) | ( lo >> 30 ); lo <<= 2; root <<= 1; test_div = ( root << 1 ) + 1; if ( rem >= test_div ) { rem -= test_div; root += 1; } } while ( --count ); } return (FT_Int32)root; } }#else /* this version uses FT_Vector_Length which computes the same value */ /* much, much faster.. */ /* */ static FT_F26Dot6 TT_VecLen( FT_F26Dot6 X, FT_F26Dot6 Y ) { FT_Vector v; v.x = X; v.y = Y; return FT_Vector_Length( &v ); } #endif /*************************************************************************/ /* */ /* <Function> */ /* Current_Ratio */ /* */ /* <Description> */ /* Returns the current aspect ratio scaling factor depending on the */ /* projection vector's state and device resolutions. */ /* */ /* <Return> */ /* The aspect ratio in 16.16 format, always <= 1.0 . */ /* */ static FT_Long Current_Ratio( EXEC_OP ) { if ( CUR.tt_metrics.ratio ) return CUR.tt_metrics.ratio; if ( CUR.GS.projVector.y == 0 ) CUR.tt_metrics.ratio = CUR.tt_metrics.x_ratio; else if ( CUR.GS.projVector.x == 0 ) CUR.tt_metrics.ratio = CUR.tt_metrics.y_ratio; else { FT_Long x, y; x = TT_MULDIV( CUR.GS.projVector.x, CUR.tt_metrics.x_ratio, 0x4000 ); y = TT_MULDIV( CUR.GS.projVector.y, CUR.tt_metrics.y_ratio, 0x4000 ); CUR.tt_metrics.ratio = TT_VecLen( x, y ); } return CUR.tt_metrics.ratio; }?? 快捷鍵說明
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