18 #ifndef MAGICKCORE_QUANTUM_PRIVATE_H
19 #define MAGICKCORE_QUANTUM_PRIVATE_H
26 #if defined(__cplusplus) || defined(c_plusplus)
107 ((one << (
MagickMin(depth,max_depth)-1))-1)));
112 #define ExponentBias (127-15)
113 #define ExponentMask 0x7c00
114 #define ExponentShift 23
115 #define SignBitShift 31
116 #define SignificandShift 13
117 #define SignificandMask 0x00000400
119 typedef union _SinglePrecision
128 register unsigned int
146 sign_bit=(
unsigned int) ((half >> 15) & 0x00000001);
147 exponent=(
unsigned int) ((half >> 10) & 0x0000001f);
148 significand=(
unsigned int) (half & 0x000003ff);
151 if (significand == 0)
161 significand&=(~SignificandMask);
171 if (significand != 0)
181 map.fixed_point=value;
182 return(map.single_precision);
186 unsigned char *pixels)
193 const unsigned int pixel,
unsigned char *pixels)
195 register unsigned int
198 quantum=(
unsigned int) pixel;
201 *pixels++=(
unsigned char) (quantum);
202 *pixels++=(
unsigned char) (quantum >> 8);
203 *pixels++=(
unsigned char) (quantum >> 16);
204 *pixels++=(
unsigned char) (quantum >> 24);
207 *pixels++=(
unsigned char) (quantum >> 24);
208 *pixels++=(
unsigned char) (quantum >> 16);
209 *pixels++=(
unsigned char) (quantum >> 8);
210 *pixels++=(
unsigned char) (quantum);
215 const unsigned short pixel,
unsigned char *pixels)
217 register unsigned int
223 *pixels++=(
unsigned char) (quantum);
224 *pixels++=(
unsigned char) (quantum >> 8);
227 *pixels++=(
unsigned char) (quantum >> 8);
228 *pixels++=(
unsigned char) (quantum);
232 static inline const unsigned char *
PushCharPixel(
const unsigned char *pixels,
233 unsigned char *pixel)
240 const unsigned char *pixels,
unsigned int *pixel)
242 register unsigned int
247 quantum=((
unsigned int) *pixels++);
248 quantum|=((
unsigned int) *pixels++ << 8);
249 quantum|=((
unsigned int) *pixels++ << 16);
250 quantum|=((
unsigned int) *pixels++ << 24);
254 quantum=((
unsigned int) *pixels++ << 24);
255 quantum|=((
unsigned int) *pixels++ << 16);
256 quantum|=((
unsigned int) *pixels++ << 8);
257 quantum|=((
unsigned int) *pixels++);
263 const unsigned char *pixels,
unsigned short *pixel)
265 register unsigned int
270 quantum=(
unsigned int) *pixels++;
271 quantum|=(
unsigned int) (*pixels++ << 8);
272 *pixel=(
unsigned short) (quantum & 0xffff);
275 quantum=(
unsigned int) (*pixels++ << 8);
276 quantum|=(
unsigned int) *pixels++;
277 *pixel=(
unsigned short) (quantum & 0xffff);
295 quantum.unsigned_value=((
unsigned int) *pixels++);
296 quantum.unsigned_value|=((
unsigned int) *pixels++ << 8);
297 quantum.unsigned_value|=((
unsigned int) *pixels++ << 16);
298 quantum.unsigned_value|=((
unsigned int) *pixels++ << 24);
299 *pixel=quantum.float_value;
302 quantum.unsigned_value=((
unsigned int) *pixels++ << 24);
303 quantum.unsigned_value|=((
unsigned int) *pixels++ << 16);
304 quantum.unsigned_value|=((
unsigned int) *pixels++ << 8);
305 quantum.unsigned_value|=((
unsigned int) *pixels++);
306 *pixel=quantum.float_value;
315 #if !defined(MAGICKCORE_HDRI_SUPPORT)
332 #if (MAGICKCORE_QUANTUM_DEPTH == 8)
333 static inline Quantum ScaleCharToQuantum(
const unsigned char value)
338 static inline Quantum ScaleLongToQuantum(
const unsigned int value)
340 #if !defined(MAGICKCORE_HDRI_SUPPORT)
341 return((
Quantum) ((value)/16843009UL));
343 return((
Quantum) (value/16843009.0));
349 #if !defined(MAGICKCORE_HDRI_SUPPORT)
352 return((
Quantum) (value/72340172838076673.0));
362 #if !defined(MAGICKCORE_HDRI_SUPPORT)
369 static inline unsigned int ScaleQuantumToLong(
const Quantum quantum)
371 #if !defined(MAGICKCORE_HDRI_SUPPORT)
372 return((
unsigned int) (16843009UL*quantum));
376 if ((16843009.0*quantum) >= 4294967295.0)
377 return(4294967295UL);
378 return((
unsigned int) (16843009.0*quantum+0.5));
384 #if !defined(MAGICKCORE_HDRI_SUPPORT)
389 if ((72340172838076673.0*quantum) >= 18446744073709551615.0)
395 static inline unsigned int ScaleQuantumToMap(
const Quantum quantum)
398 return((
unsigned int) MaxMap);
399 #if !defined(MAGICKCORE_HDRI_SUPPORT)
400 return((
unsigned int) quantum);
404 return((
unsigned int) (quantum+0.5));
408 static inline unsigned short ScaleQuantumToShort(
const Quantum quantum)
410 #if !defined(MAGICKCORE_HDRI_SUPPORT)
411 return((
unsigned short) (257UL*quantum));
415 if ((257.0*quantum) >= 65535.0)
417 return((
unsigned short) (257.0*quantum+0.5));
421 static inline Quantum ScaleShortToQuantum(
const unsigned short value)
423 #if !defined(MAGICKCORE_HDRI_SUPPORT)
424 return((
Quantum) ((value+128U)/257U));
426 return((
Quantum) (value/257.0));
429 #elif (MAGICKCORE_QUANTUM_DEPTH == 16)
430 static inline Quantum ScaleCharToQuantum(
const unsigned char value)
432 #if !defined(MAGICKCORE_HDRI_SUPPORT)
433 return((
Quantum) (257U*value));
435 return((
Quantum) (257.0*value));
439 static inline Quantum ScaleLongToQuantum(
const unsigned int value)
441 #if !defined(MAGICKCORE_HDRI_SUPPORT)
444 return((
Quantum) (value/65537.0));
450 #if !defined(MAGICKCORE_HDRI_SUPPORT)
453 return((
Quantum) (value/281479271743489.0));
463 #if !defined(MAGICKCORE_HDRI_SUPPORT)
470 static inline unsigned int ScaleQuantumToLong(
const Quantum quantum)
472 #if !defined(MAGICKCORE_HDRI_SUPPORT)
473 return((
unsigned int) (65537UL*quantum));
477 if ((65537.0*quantum) >= 4294967295.0)
479 return((
unsigned int) (65537.0*quantum+0.5));
485 #if !defined(MAGICKCORE_HDRI_SUPPORT)
490 if ((281479271743489.0*quantum) >= 18446744073709551615.0)
496 static inline unsigned int ScaleQuantumToMap(
const Quantum quantum)
498 if (quantum >= (
Quantum) MaxMap)
499 return((
unsigned int) MaxMap);
500 #if !defined(MAGICKCORE_HDRI_SUPPORT)
501 return((
unsigned int) quantum);
505 return((
unsigned int) (quantum+0.5));
509 static inline unsigned short ScaleQuantumToShort(
const Quantum quantum)
511 #if !defined(MAGICKCORE_HDRI_SUPPORT)
512 return((
unsigned short) quantum);
516 if (quantum >= 65535.0)
518 return((
unsigned short) (quantum+0.5));
522 static inline Quantum ScaleShortToQuantum(
const unsigned short value)
526 #elif (MAGICKCORE_QUANTUM_DEPTH == 32)
527 static inline Quantum ScaleCharToQuantum(
const unsigned char value)
529 #if !defined(MAGICKCORE_HDRI_SUPPORT)
530 return((
Quantum) (16843009UL*value));
532 return((
Quantum) (16843009.0*value));
536 static inline Quantum ScaleLongToQuantum(
const unsigned int value)
543 #if !defined(MAGICKCORE_HDRI_SUPPORT)
546 return((
Quantum) (value/4294967297.0));
556 #if !defined(MAGICKCORE_HDRI_SUPPORT)
557 return((
Quantum) (65537.0*value+0.5));
559 return((
Quantum) (65537.0*value));
563 static inline unsigned int ScaleQuantumToLong(
const Quantum quantum)
565 #if !defined(MAGICKCORE_HDRI_SUPPORT)
566 return((
unsigned int) quantum);
570 if ((quantum) >= 4294967295.0)
572 return((
unsigned int) (quantum+0.5));
578 #if !defined(MAGICKCORE_HDRI_SUPPORT)
583 if ((4294967297.0*quantum) >= 18446744073709551615.0)
589 static inline unsigned int ScaleQuantumToMap(
const Quantum quantum)
593 if ((quantum/65537) >= (
Quantum) MaxMap)
594 return((
unsigned int) MaxMap);
595 #if !defined(MAGICKCORE_HDRI_SUPPORT)
599 return((
unsigned int) (quantum/65537.0+0.5));
603 static inline unsigned short ScaleQuantumToShort(
const Quantum quantum)
605 #if !defined(MAGICKCORE_HDRI_SUPPORT)
611 if ((quantum/65537.0) >= 65535.0)
613 return((
unsigned short) (quantum/65537.0+0.5));
617 static inline Quantum ScaleShortToQuantum(
const unsigned short value)
619 #if !defined(MAGICKCORE_HDRI_SUPPORT)
620 return((
Quantum) (65537UL*value));
622 return((
Quantum) (65537.0*value));
625 #elif (MAGICKCORE_QUANTUM_DEPTH == 64)
626 static inline Quantum ScaleCharToQuantum(
const unsigned char value)
628 return((
Quantum) (72340172838076673.0*value));
631 static inline Quantum ScaleLongToQuantum(
const unsigned int value)
633 return((
Quantum) (4294967297.0*value));
647 return((
Quantum) (281479271743489.0*value));
650 static inline unsigned int ScaleQuantumToLong(
const Quantum quantum)
652 return((
unsigned int) (quantum/4294967297.0+0.5));
657 #if !defined(MAGICKCORE_HDRI_SUPPORT)
662 if (quantum >= 18446744073709551615.0)
668 static inline unsigned int ScaleQuantumToMap(
const Quantum quantum)
672 if ((quantum/281479271743489.0) >= MaxMap)
673 return((
unsigned int) MaxMap);
674 return((
unsigned int) (quantum/281479271743489.0+0.5));
677 static inline unsigned short ScaleQuantumToShort(
const Quantum quantum)
681 if ((quantum/281479271743489.0) >= 65535.0)
683 return((
unsigned short) (quantum/281479271743489.0+0.5));
686 static inline Quantum ScaleShortToQuantum(
const unsigned short value)
688 return((
Quantum) (281479271743489.0*value));
694 typedef union _SinglePrecision
706 register unsigned int
723 map.single_precision=value;
724 sign_bit=(map.fixed_point >> 16) & 0x00008000;
726 significand=map.fixed_point & 0x007fffff;
733 return((
unsigned short) sign_bit);
734 significand=significand | 0x00800000;
735 shift=(int) (14-exponent);
736 significand=(
unsigned int) ((significand+((1 << (shift-1))-1)+
737 ((significand >> shift) & 0x01)) >> shift);
738 return((
unsigned short) (sign_bit | significand));
743 if (significand == 0)
748 half=(
unsigned short) (sign_bit | significand |
753 significand=significand+((significand >>
SignificandShift) & 0x01)+0x00000fff;
754 if ((significand & 0x00800000) != 0)
771 for (i=0; i < 10; i++)
775 half=(
unsigned short) (sign_bit | (exponent << 10) |
780 #if defined(__cplusplus) || defined(c_plusplus)
MagickDoubleType MagickRealType
Definition: magick-type.h:120
QuantumFormatType
Definition: quantum.h:42
QuantumFormatType format
Definition: quantum-private.h:52
static MagickSizeType GetQuantumRange(const size_t depth)
Definition: quantum-private.h:94
MemoryInfo ** pixels
Definition: quantum-private.h:73
QuantumAlphaType alpha_type
Definition: quantum-private.h:67
size_t signature
Definition: quantum-private.h:88
#define MagickULLConstant(c)
Definition: magick-type.h:36
MagickPrivate void ResetQuantumState(QuantumInfo *)
Definition: quantum.c:579
QuantumState state
Definition: quantum-private.h:82
size_t depth
Definition: quantum-private.h:48
float MagickFloatType
Definition: magick-type.h:40
double minimum
Definition: quantum-private.h:55
EndianType
Definition: quantum.h:28
size_t quantum
Definition: quantum-private.h:48
EndianType endian
Definition: quantum-private.h:79
static const unsigned char * PushShortPixel(const EndianType endian, const unsigned char *pixels, unsigned short *pixel)
Definition: quantum-private.h:262
MagickBooleanType pack
Definition: quantum-private.h:63
static const unsigned char * PushCharPixel(const unsigned char *pixels, unsigned char *pixel)
Definition: quantum-private.h:232
MagickBooleanType
Definition: magick-type.h:158
static double PerceptibleReciprocal(const double x)
Definition: pixel-accessor.h:224
static Quantum ScaleAnyToQuantum(const QuantumAny quantum, const QuantumAny range)
Definition: quantum-private.h:310
static unsigned char * PopLongPixel(const EndianType endian, const unsigned int pixel, unsigned char *pixels)
Definition: quantum-private.h:192
unsigned int pixel
Definition: quantum-private.h:36
size_t MagickSizeType
Definition: magick-type.h:130
static const unsigned char * PushLongPixel(const EndianType endian, const unsigned char *pixels, unsigned int *pixel)
Definition: quantum-private.h:239
SemaphoreInfo * semaphore
Definition: quantum-private.h:85
#define MaxMap
Definition: magick-type.h:75
Definition: quantum-private.h:45
size_t pad
Definition: quantum-private.h:60
static float HalfToSinglePrecision(const unsigned short half)
Definition: quantum-private.h:110
size_t number_threads
Definition: quantum-private.h:70
double scale
Definition: quantum-private.h:55
const unsigned int * mask
Definition: quantum-private.h:42
unsigned short Quantum
Definition: magick-type.h:82
size_t bits
Definition: quantum-private.h:39
size_t extent
Definition: quantum-private.h:76
static unsigned char * PopCharPixel(const unsigned char pixel, unsigned char *pixels)
Definition: quantum-private.h:185
static unsigned char * PopShortPixel(const EndianType endian, const unsigned short pixel, unsigned char *pixels)
Definition: quantum-private.h:214
#define MagickMin(x, y)
Definition: image-private.h:27
double inverse_scale
Definition: quantum-private.h:33
static unsigned short SinglePrecisionToHalf(const float value)
Definition: quantum-private.h:692
#define MagickPrivate
Definition: method-attribute.h:81
struct _QuantumState QuantumState
double maximum
Definition: quantum-private.h:55
static QuantumAny ScaleQuantumToAny(const Quantum quantum, const QuantumAny range)
Definition: quantum-private.h:324
MagickBooleanType min_is_white
Definition: quantum-private.h:63
Definition: quantum-private.h:30
MagickSizeType QuantumAny
Definition: magick-type.h:144
QuantumAlphaType
Definition: quantum.h:35
Definition: semaphore.c:59
#define QuantumRange
Definition: magick-type.h:83
static const unsigned char * PushFloatPixel(const EndianType endian, const unsigned char *pixels, MagickFloatType *pixel)
Definition: quantum-private.h:281