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-rw-r--r--freetype/include/internal/ftcalc.h289
-rw-r--r--freetype/include/internal/ftgloadr.h30
-rw-r--r--freetype/include/internal/ftobjs.h18
-rw-r--r--freetype/include/internal/ftvalid.h24
-rw-r--r--freetype/include/internal/pshints.h4
-rw-r--r--freetype/include/internal/sfnt.h16
6 files changed, 311 insertions, 70 deletions
diff --git a/freetype/include/internal/ftcalc.h b/freetype/include/internal/ftcalc.h
index 82c4ac5fb..6282ad2bb 100644
--- a/freetype/include/internal/ftcalc.h
+++ b/freetype/include/internal/ftcalc.h
@@ -4,7 +4,7 @@
/* */
/* Arithmetic computations (specification). */
/* */
-/* Copyright 1996-2006, 2008, 2009, 2012-2013 by */
+/* Copyright 1996-2006, 2008, 2009, 2012-2014 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -27,36 +27,223 @@
FT_BEGIN_HEADER
-#if 0
-
/*************************************************************************/
/* */
- /* <Function> */
- /* FT_SqrtFixed */
- /* */
- /* <Description> */
- /* Computes the square root of a 16.16 fixed-point value. */
- /* */
- /* <Input> */
- /* x :: The value to compute the root for. */
- /* */
- /* <Return> */
- /* The result of `sqrt(x)'. */
- /* */
- /* <Note> */
- /* This function is not very fast. */
+ /* FT_MulDiv() and FT_MulFix() are declared in freetype.h. */
/* */
- FT_BASE( FT_Int32 )
- FT_SqrtFixed( FT_Int32 x );
+ /*************************************************************************/
-#endif /* 0 */
+#ifndef FT_CONFIG_OPTION_NO_ASSEMBLER
+ /* Provide assembler fragments for performance-critical functions. */
+ /* These must be defined `static __inline__' with GCC. */
+#if defined( __CC_ARM ) || defined( __ARMCC__ ) /* RVCT */
- /*************************************************************************/
- /* */
- /* FT_MulDiv() and FT_MulFix() are declared in freetype.h. */
- /* */
- /*************************************************************************/
+#define FT_MULFIX_ASSEMBLER FT_MulFix_arm
+
+ /* documentation is in freetype.h */
+
+ static __inline FT_Int32
+ FT_MulFix_arm( FT_Int32 a,
+ FT_Int32 b )
+ {
+ register FT_Int32 t, t2;
+
+
+ __asm
+ {
+ smull t2, t, b, a /* (lo=t2,hi=t) = a*b */
+ mov a, t, asr #31 /* a = (hi >> 31) */
+ add a, a, #0x8000 /* a += 0x8000 */
+ adds t2, t2, a /* t2 += a */
+ adc t, t, #0 /* t += carry */
+ mov a, t2, lsr #16 /* a = t2 >> 16 */
+ orr a, a, t, lsl #16 /* a |= t << 16 */
+ }
+ return a;
+ }
+
+#endif /* __CC_ARM || __ARMCC__ */
+
+
+#ifdef __GNUC__
+
+#if defined( __arm__ ) && \
+ ( !defined( __thumb__ ) || defined( __thumb2__ ) ) && \
+ !( defined( __CC_ARM ) || defined( __ARMCC__ ) )
+
+#define FT_MULFIX_ASSEMBLER FT_MulFix_arm
+
+ /* documentation is in freetype.h */
+
+ static __inline__ FT_Int32
+ FT_MulFix_arm( FT_Int32 a,
+ FT_Int32 b )
+ {
+ register FT_Int32 t, t2;
+
+
+ __asm__ __volatile__ (
+ "smull %1, %2, %4, %3\n\t" /* (lo=%1,hi=%2) = a*b */
+ "mov %0, %2, asr #31\n\t" /* %0 = (hi >> 31) */
+#if defined( __clang__ ) && defined( __thumb2__ )
+ "add.w %0, %0, #0x8000\n\t" /* %0 += 0x8000 */
+#else
+ "add %0, %0, #0x8000\n\t" /* %0 += 0x8000 */
+#endif
+ "adds %1, %1, %0\n\t" /* %1 += %0 */
+ "adc %2, %2, #0\n\t" /* %2 += carry */
+ "mov %0, %1, lsr #16\n\t" /* %0 = %1 >> 16 */
+ "orr %0, %0, %2, lsl #16\n\t" /* %0 |= %2 << 16 */
+ : "=r"(a), "=&r"(t2), "=&r"(t)
+ : "r"(a), "r"(b)
+ : "cc" );
+ return a;
+ }
+
+#endif /* __arm__ && */
+ /* ( __thumb2__ || !__thumb__ ) && */
+ /* !( __CC_ARM || __ARMCC__ ) */
+
+
+#if defined( __i386__ )
+
+#define FT_MULFIX_ASSEMBLER FT_MulFix_i386
+
+ /* documentation is in freetype.h */
+
+ static __inline__ FT_Int32
+ FT_MulFix_i386( FT_Int32 a,
+ FT_Int32 b )
+ {
+ register FT_Int32 result;
+
+
+ __asm__ __volatile__ (
+ "imul %%edx\n"
+ "movl %%edx, %%ecx\n"
+ "sarl $31, %%ecx\n"
+ "addl $0x8000, %%ecx\n"
+ "addl %%ecx, %%eax\n"
+ "adcl $0, %%edx\n"
+ "shrl $16, %%eax\n"
+ "shll $16, %%edx\n"
+ "addl %%edx, %%eax\n"
+ : "=a"(result), "=d"(b)
+ : "a"(a), "d"(b)
+ : "%ecx", "cc" );
+ return result;
+ }
+
+#endif /* i386 */
+
+#endif /* __GNUC__ */
+
+
+#ifdef _MSC_VER /* Visual C++ */
+
+#ifdef _M_IX86
+
+#define FT_MULFIX_ASSEMBLER FT_MulFix_i386
+
+ /* documentation is in freetype.h */
+
+ static __inline FT_Int32
+ FT_MulFix_i386( FT_Int32 a,
+ FT_Int32 b )
+ {
+ register FT_Int32 result;
+
+ __asm
+ {
+ mov eax, a
+ mov edx, b
+ imul edx
+ mov ecx, edx
+ sar ecx, 31
+ add ecx, 8000h
+ add eax, ecx
+ adc edx, 0
+ shr eax, 16
+ shl edx, 16
+ add eax, edx
+ mov result, eax
+ }
+ return result;
+ }
+
+#endif /* _M_IX86 */
+
+#endif /* _MSC_VER */
+
+
+#if defined( __GNUC__ ) && defined( __x86_64__ )
+
+#define FT_MULFIX_ASSEMBLER FT_MulFix_x86_64
+
+ static __inline__ FT_Int32
+ FT_MulFix_x86_64( FT_Int32 a,
+ FT_Int32 b )
+ {
+ /* Temporarily disable the warning that C90 doesn't support */
+ /* `long long'. */
+#if __GNUC__ > 4 || ( __GNUC__ == 4 && __GNUC_MINOR__ >= 6 )
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wlong-long"
+#endif
+
+#if 1
+ /* Technically not an assembly fragment, but GCC does a really good */
+ /* job at inlining it and generating good machine code for it. */
+ long long ret, tmp;
+
+
+ ret = (long long)a * b;
+ tmp = ret >> 63;
+ ret += 0x8000 + tmp;
+
+ return (FT_Int32)( ret >> 16 );
+#else
+
+ /* For some reason, GCC 4.6 on Ubuntu 12.04 generates invalid machine */
+ /* code from the lines below. The main issue is that `wide_a' is not */
+ /* properly initialized by sign-extending `a'. Instead, the generated */
+ /* machine code assumes that the register that contains `a' on input */
+ /* can be used directly as a 64-bit value, which is wrong most of the */
+ /* time. */
+ long long wide_a = (long long)a;
+ long long wide_b = (long long)b;
+ long long result;
+
+
+ __asm__ __volatile__ (
+ "imul %2, %1\n"
+ "mov %1, %0\n"
+ "sar $63, %0\n"
+ "lea 0x8000(%1, %0), %0\n"
+ "sar $16, %0\n"
+ : "=&r"(result), "=&r"(wide_a)
+ : "r"(wide_b)
+ : "cc" );
+
+ return (FT_Int32)result;
+#endif
+
+#if __GNUC__ > 4 || ( __GNUC__ == 4 && __GNUC_MINOR__ >= 6 )
+#pragma GCC diagnostic pop
+#endif
+ }
+
+#endif /* __GNUC__ && __x86_64__ */
+
+#endif /* !FT_CONFIG_OPTION_NO_ASSEMBLER */
+
+
+#ifdef FT_CONFIG_OPTION_INLINE_MULFIX
+#ifdef FT_MULFIX_ASSEMBLER
+#define FT_MulFix( a, b ) FT_MULFIX_ASSEMBLER( (FT_Int32)(a), (FT_Int32)(b) )
+#endif
+#endif
/*************************************************************************/
@@ -124,10 +311,11 @@ FT_BEGIN_HEADER
FT_Pos out_x,
FT_Pos out_y );
+
/*
* Return TRUE if a corner is flat or nearly flat. This is equivalent to
- * saying that the angle difference between the `in' and `out' vectors is
- * very small.
+ * saying that the corner point is close to its neighbors, or inside an
+ * ellipse defined by the neighbor focal points to be more precise.
*/
FT_BASE( FT_Int )
ft_corner_is_flat( FT_Pos in_x,
@@ -139,9 +327,31 @@ FT_BEGIN_HEADER
/*
* Return the most significant bit index.
*/
+
+#ifndef FT_CONFIG_OPTION_NO_ASSEMBLER
+#if defined( __GNUC__ ) && \
+ ( __GNUC__ > 3 || ( __GNUC__ == 3 && __GNUC_MINOR__ >= 4 ) )
+
+#if FT_SIZEOF_INT == 4
+
+#define FT_MSB( x ) ( 31 - __builtin_clz( x ) )
+
+#elif FT_SIZEOF_LONG == 4
+
+#define FT_MSB( x ) ( 31 - __builtin_clzl( x ) )
+
+#endif
+
+#endif /* __GNUC__ */
+#endif /* !FT_CONFIG_OPTION_NO_ASSEMBLER */
+
+#ifndef FT_MSB
+
FT_BASE( FT_Int )
FT_MSB( FT_UInt32 z );
+#endif
+
/*
* Return sqrt(x*x+y*y), which is the same as `FT_Vector_Length' but uses
@@ -152,6 +362,31 @@ FT_BEGIN_HEADER
FT_Fixed y );
+#if 0
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* FT_SqrtFixed */
+ /* */
+ /* <Description> */
+ /* Computes the square root of a 16.16 fixed-point value. */
+ /* */
+ /* <Input> */
+ /* x :: The value to compute the root for. */
+ /* */
+ /* <Return> */
+ /* The result of `sqrt(x)'. */
+ /* */
+ /* <Note> */
+ /* This function is not very fast. */
+ /* */
+ FT_BASE( FT_Int32 )
+ FT_SqrtFixed( FT_Int32 x );
+
+#endif /* 0 */
+
+
#define INT_TO_F26DOT6( x ) ( (FT_Long)(x) << 6 )
#define INT_TO_F2DOT14( x ) ( (FT_Long)(x) << 14 )
#define INT_TO_FIXED( x ) ( (FT_Long)(x) << 16 )
diff --git a/freetype/include/internal/ftgloadr.h b/freetype/include/internal/ftgloadr.h
index e2d9a710c..7e4c34315 100644
--- a/freetype/include/internal/ftgloadr.h
+++ b/freetype/include/internal/ftgloadr.h
@@ -121,20 +121,22 @@ FT_BEGIN_HEADER
FT_UInt n_contours );
-#define FT_GLYPHLOADER_CHECK_P( _loader, _count ) \
- ( (_count) == 0 || ((_loader)->base.outline.n_points + \
- (_loader)->current.outline.n_points + \
- (unsigned long)(_count)) <= (_loader)->max_points )
-
-#define FT_GLYPHLOADER_CHECK_C( _loader, _count ) \
- ( (_count) == 0 || ((_loader)->base.outline.n_contours + \
- (_loader)->current.outline.n_contours + \
- (unsigned long)(_count)) <= (_loader)->max_contours )
-
-#define FT_GLYPHLOADER_CHECK_POINTS( _loader, _points,_contours ) \
- ( ( FT_GLYPHLOADER_CHECK_P( _loader, _points ) && \
- FT_GLYPHLOADER_CHECK_C( _loader, _contours ) ) \
- ? 0 \
+#define FT_GLYPHLOADER_CHECK_P( _loader, _count ) \
+ ( (_count) == 0 || \
+ ( (_loader)->base.outline.n_points + \
+ (_loader)->current.outline.n_points + \
+ (unsigned long)(_count) ) <= (_loader)->max_points )
+
+#define FT_GLYPHLOADER_CHECK_C( _loader, _count ) \
+ ( (_count) == 0 || \
+ ( (_loader)->base.outline.n_contours + \
+ (_loader)->current.outline.n_contours + \
+ (unsigned long)(_count)) <= (_loader)->max_contours )
+
+#define FT_GLYPHLOADER_CHECK_POINTS( _loader, _points, _contours ) \
+ ( ( FT_GLYPHLOADER_CHECK_P( _loader, _points ) && \
+ FT_GLYPHLOADER_CHECK_C( _loader, _contours ) ) \
+ ? 0 \
: FT_GlyphLoader_CheckPoints( (_loader), (_points), (_contours) ) )
diff --git a/freetype/include/internal/ftobjs.h b/freetype/include/internal/ftobjs.h
index 92d2cb1cc..af5faf4a3 100644
--- a/freetype/include/internal/ftobjs.h
+++ b/freetype/include/internal/ftobjs.h
@@ -72,6 +72,16 @@ FT_BEGIN_HEADER
#define FT_ABS( a ) ( (a) < 0 ? -(a) : (a) )
+ /*
+ * Approximate sqrt(x*x+y*y) using the `alpha max plus beta min'
+ * algorithm. We use alpha = 1, beta = 3/8, giving us results with a
+ * largest error less than 7% compared to the exact value.
+ */
+#define FT_HYPOT( x, y ) \
+ ( x = FT_ABS( x ), \
+ y = FT_ABS( y ), \
+ x > y ? x + ( 3 * y >> 3 ) \
+ : y + ( 3 * x >> 3 ) )
#define FT_PAD_FLOOR( x, n ) ( (x) & ~((n)-1) )
#define FT_PAD_ROUND( x, n ) FT_PAD_FLOOR( (x) + ((n)/2), n )
@@ -83,14 +93,6 @@ FT_BEGIN_HEADER
/*
- * Return the highest power of 2 that is <= value; this correspond to
- * the highest bit in a given 32-bit value.
- */
- FT_BASE( FT_UInt32 )
- ft_highpow2( FT_UInt32 value );
-
-
- /*
* character classification functions -- since these are used to parse
* font files, we must not use those in <ctypes.h> which are
* locale-dependent
diff --git a/freetype/include/internal/ftvalid.h b/freetype/include/internal/ftvalid.h
index 12ad03685..c281b1424 100644
--- a/freetype/include/internal/ftvalid.h
+++ b/freetype/include/internal/ftvalid.h
@@ -4,7 +4,7 @@
/* */
/* FreeType validation support (specification). */
/* */
-/* Copyright 2004, 2013 by */
+/* Copyright 2004, 2013, 2014 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -87,13 +87,13 @@ FT_BEGIN_HEADER
/* validator structure */
typedef struct FT_ValidatorRec_
{
+ ft_jmp_buf jump_buffer; /* used for exception handling */
+
const FT_Byte* base; /* address of table in memory */
const FT_Byte* limit; /* `base' + sizeof(table) in memory */
FT_ValidationLevel level; /* validation level */
FT_Error error; /* error returned. 0 means success */
- ft_jmp_buf jump_buffer; /* used for exception handling */
-
} FT_ValidatorRec;
#if defined( _MSC_VER )
@@ -126,31 +126,29 @@ FT_BEGIN_HEADER
/* Calls ft_validate_error. Assumes that the `valid' local variable */
/* holds a pointer to the current validator object. */
/* */
- /* Use preprocessor prescan to pass FT_ERR_PREFIX. */
- /* */
-#define FT_INVALID( _prefix, _error ) FT_INVALID_( _prefix, _error )
-#define FT_INVALID_( _prefix, _error ) \
- ft_validator_error( valid, _prefix ## _error )
+#define FT_INVALID( _error ) FT_INVALID_( _error )
+#define FT_INVALID_( _error ) \
+ ft_validator_error( valid, FT_THROW( _error ) )
/* called when a broken table is detected */
#define FT_INVALID_TOO_SHORT \
- FT_INVALID( FT_ERR_PREFIX, Invalid_Table )
+ FT_INVALID( Invalid_Table )
/* called when an invalid offset is detected */
#define FT_INVALID_OFFSET \
- FT_INVALID( FT_ERR_PREFIX, Invalid_Offset )
+ FT_INVALID( Invalid_Offset )
/* called when an invalid format/value is detected */
#define FT_INVALID_FORMAT \
- FT_INVALID( FT_ERR_PREFIX, Invalid_Table )
+ FT_INVALID( Invalid_Table )
/* called when an invalid glyph index is detected */
#define FT_INVALID_GLYPH_ID \
- FT_INVALID( FT_ERR_PREFIX, Invalid_Glyph_Index )
+ FT_INVALID( Invalid_Glyph_Index )
/* called when an invalid field value is detected */
#define FT_INVALID_DATA \
- FT_INVALID( FT_ERR_PREFIX, Invalid_Table )
+ FT_INVALID( Invalid_Table )
FT_END_HEADER
diff --git a/freetype/include/internal/pshints.h b/freetype/include/internal/pshints.h
index 0976bd34f..f0e134f14 100644
--- a/freetype/include/internal/pshints.h
+++ b/freetype/include/internal/pshints.h
@@ -6,7 +6,7 @@
/* recorders (specification only). These are used to support native */
/* T1/T2 hints in the `type1', `cid', and `cff' font drivers. */
/* */
-/* Copyright 2001-2003, 2005-2007, 2009, 2012 by */
+/* Copyright 2001-2003, 2005-2007, 2009, 2012, 2014 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -45,7 +45,7 @@ FT_BEGIN_HEADER
T1_Private* private_dict,
PSH_Globals* aglobals );
- typedef FT_Error
+ typedef void
(*PSH_Globals_SetScaleFunc)( PSH_Globals globals,
FT_Fixed x_scale,
FT_Fixed y_scale,
diff --git a/freetype/include/internal/sfnt.h b/freetype/include/internal/sfnt.h
index 3355804b7..f17268b8a 100644
--- a/freetype/include/internal/sfnt.h
+++ b/freetype/include/internal/sfnt.h
@@ -4,7 +4,7 @@
/* */
/* High-level `sfnt' driver interface (specification). */
/* */
-/* Copyright 1996-2006, 2009, 2012-2013 by */
+/* Copyright 1996-2006, 2009, 2012-2014 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -405,14 +405,18 @@ FT_BEGIN_HEADER
/* <Input> */
/* face :: A handle to the target face object. */
/* */
- /* stream :: The input stream. */
- /* */
/* vertical :: A boolean flag. If set, load vertical metrics. */
/* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
+ /* gindex :: The glyph index. */
/* */
- typedef FT_Error
+ /* <Output> */
+ /* abearing :: The horizontal (or vertical) bearing. Set to zero in */
+ /* case of error. */
+ /* */
+ /* aadvance :: The horizontal (or vertical) advance. Set to zero in */
+ /* case of error. */
+ /* */
+ typedef void
(*TT_Get_Metrics_Func)( TT_Face face,
FT_Bool vertical,
FT_UInt gindex,
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-10 10:14:11 +0000