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
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);
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);
223 *pixels++=(
unsigned char) (quantum);
224 *pixels++=(
unsigned char) (quantum >> 8);
227 *pixels++=(
unsigned char) (quantum >> 8);
228 *pixels++=(
unsigned char) (quantum);
249 quantum=((
unsigned int) *pixels++);
250 quantum|=((
unsigned int) *pixels++ << 8);
251 quantum|=((
unsigned int) *pixels++ << 16);
252 quantum|=((
unsigned int) *pixels++ << 24);
256 quantum=((
unsigned int) *pixels++ << 24);
257 quantum|=((
unsigned int) *pixels++ << 16);
258 quantum|=((
unsigned int) *pixels++ << 8);
259 quantum|=((
unsigned int) *pixels++);
273 quantum=(
unsigned int) *pixels++;
274 quantum|=(
unsigned int) (*pixels++ << 8);
275 *pixel=(
unsigned short) (quantum & 0xffff);
278 quantum=(
unsigned int) (*pixels++ << 8);
279 quantum|=(
unsigned int) *pixels++;
280 *pixel=(
unsigned short) (quantum & 0xffff);
299 quantum.unsigned_value=((
unsigned int) *pixels++);
300 quantum.unsigned_value|=((
unsigned int) *pixels++ << 8);
301 quantum.unsigned_value|=((
unsigned int) *pixels++ << 16);
302 quantum.unsigned_value|=((
unsigned int) *pixels++ << 24);
303 *pixel=quantum.float_value;
306 quantum.unsigned_value=((
unsigned int) *pixels++ << 24);
307 quantum.unsigned_value|=((
unsigned int) *pixels++ << 16);
308 quantum.unsigned_value|=((
unsigned int) *pixels++ << 8);
309 quantum.unsigned_value|=((
unsigned int) *pixels++);
310 *pixel=quantum.float_value;
319 #if !defined(MAGICKCORE_HDRI_SUPPORT)
331 #if !defined(MAGICKCORE_HDRI_SUPPORT)
334 if ((
IsNaN(quantum) != 0) || (quantum <= 0.0))
342 #if (MAGICKCORE_QUANTUM_DEPTH == 8)
343 static inline Quantum ScaleCharToQuantum(
const unsigned char value)
348 static inline Quantum ScaleLongToQuantum(
const unsigned int value)
350 #if !defined(MAGICKCORE_HDRI_SUPPORT)
351 return((
Quantum) ((value)/16843009UL));
353 return((
Quantum) (value/16843009.0));
363 #if !defined(MAGICKCORE_HDRI_SUPPORT)
370 static inline unsigned int ScaleQuantumToLong(
const Quantum quantum)
372 #if !defined(MAGICKCORE_HDRI_SUPPORT)
373 return((
unsigned int) (16843009UL*quantum));
375 if ((
IsNaN(quantum) != 0) || (quantum <= 0.0))
377 if ((16843009.0*quantum) >= 4294967295.0)
378 return(4294967295UL);
379 return((
unsigned int) (16843009.0*quantum+0.5));
383 static inline unsigned int ScaleQuantumToMap(
const Quantum quantum)
386 return((
unsigned int) MaxMap);
387 #if !defined(MAGICKCORE_HDRI_SUPPORT)
388 return((
unsigned int) quantum);
390 if ((
IsNaN(quantum) != 0) || (quantum <= 0.0))
392 return((
unsigned int) (quantum+0.5));
396 static inline unsigned short ScaleQuantumToShort(
const Quantum quantum)
398 #if !defined(MAGICKCORE_HDRI_SUPPORT)
399 return((
unsigned short) (257UL*quantum));
401 if ((
IsNaN(quantum) != 0) || (quantum <= 0.0))
403 if ((257.0*quantum) >= 65535.0)
405 return((
unsigned short) (257.0*quantum+0.5));
409 static inline Quantum ScaleShortToQuantum(
const unsigned short value)
411 #if !defined(MAGICKCORE_HDRI_SUPPORT)
412 return((
Quantum) ((value+128U)/257U));
414 return((
Quantum) (value/257.0));
417 #elif (MAGICKCORE_QUANTUM_DEPTH == 16)
418 static inline Quantum ScaleCharToQuantum(
const unsigned char value)
420 #if !defined(MAGICKCORE_HDRI_SUPPORT)
421 return((
Quantum) (257U*value));
423 return((
Quantum) (257.0*value));
427 static inline Quantum ScaleLongToQuantum(
const unsigned int value)
429 #if !defined(MAGICKCORE_HDRI_SUPPORT)
432 return((
Quantum) (value/65537.0));
442 #if !defined(MAGICKCORE_HDRI_SUPPORT)
449 static inline unsigned int ScaleQuantumToLong(
const Quantum quantum)
451 #if !defined(MAGICKCORE_HDRI_SUPPORT)
452 return((
unsigned int) (65537UL*quantum));
454 if ((
IsNaN(quantum) != 0) || (quantum <= 0.0))
456 if ((65537.0*quantum) >= 4294967295.0)
458 return((
unsigned int) (65537.0*quantum+0.5));
462 static inline unsigned int ScaleQuantumToMap(
const Quantum quantum)
464 if (quantum >= (
Quantum) MaxMap)
465 return((
unsigned int) MaxMap);
466 #if !defined(MAGICKCORE_HDRI_SUPPORT)
467 return((
unsigned int) quantum);
469 if ((
IsNaN(quantum) != 0) || (quantum <= 0.0))
471 return((
unsigned int) (quantum+0.5));
475 static inline unsigned short ScaleQuantumToShort(
const Quantum quantum)
477 #if !defined(MAGICKCORE_HDRI_SUPPORT)
478 return((
unsigned short) quantum);
480 if ((
IsNaN(quantum) != 0) || (quantum <= 0.0))
482 if (quantum >= 65535.0)
484 return((
unsigned short) (quantum+0.5));
488 static inline Quantum ScaleShortToQuantum(
const unsigned short value)
492 #elif (MAGICKCORE_QUANTUM_DEPTH == 32)
493 static inline Quantum ScaleCharToQuantum(
const unsigned char value)
495 #if !defined(MAGICKCORE_HDRI_SUPPORT)
496 return((
Quantum) (16843009UL*value));
498 return((
Quantum) (16843009.0*value));
502 static inline Quantum ScaleLongToQuantum(
const unsigned int value)
513 #if !defined(MAGICKCORE_HDRI_SUPPORT)
514 return((
Quantum) (65537.0*value+0.5));
516 return((
Quantum) (65537.0*value));
520 static inline unsigned int ScaleQuantumToLong(
const Quantum quantum)
522 #if !defined(MAGICKCORE_HDRI_SUPPORT)
523 return((
unsigned int) quantum);
525 if ((
IsNaN(quantum) != 0) || (quantum <= 0.0))
527 if ((quantum) >= 4294967295.0)
529 return((
unsigned int) (quantum+0.5));
533 static inline unsigned int ScaleQuantumToMap(
const Quantum quantum)
535 if ((quantum/65537) >= (
Quantum) MaxMap)
536 return((
unsigned int) MaxMap);
537 #if !defined(MAGICKCORE_HDRI_SUPPORT)
541 if ((
IsNaN(quantum) != 0) || (quantum <= 0.0))
543 return((
unsigned int) (quantum/65537.0+0.5));
547 static inline unsigned short ScaleQuantumToShort(
const Quantum quantum)
549 #if !defined(MAGICKCORE_HDRI_SUPPORT)
553 if ((
IsNaN(quantum) != 0) || (quantum <= 0.0))
555 if ((quantum/65537.0) >= 65535.0)
557 return((
unsigned short) (quantum/65537.0+0.5));
561 static inline Quantum ScaleShortToQuantum(
const unsigned short value)
563 #if !defined(MAGICKCORE_HDRI_SUPPORT)
564 return((
Quantum) (65537UL*value));
566 return((
Quantum) (65537.0*value));
569 #elif (MAGICKCORE_QUANTUM_DEPTH == 64)
570 static inline Quantum ScaleCharToQuantum(
const unsigned char value)
572 return((
Quantum) (72340172838076673.0*value));
575 static inline Quantum ScaleLongToQuantum(
const unsigned int value)
577 return((
Quantum) (4294967297.0*value));
586 return((
Quantum) (281479271743489.0*value));
589 static inline unsigned int ScaleQuantumToLong(
const Quantum quantum)
591 return((
unsigned int) (quantum/4294967297.0+0.5));
594 static inline unsigned int ScaleQuantumToMap(
const Quantum quantum)
596 if ((
IsNaN(quantum) != 0) || (quantum <= 0.0))
598 if ((quantum/281479271743489.0) >= MaxMap)
599 return((
unsigned int) MaxMap);
600 return((
unsigned int) (quantum/281479271743489.0+0.5));
603 static inline unsigned short ScaleQuantumToShort(
const Quantum quantum)
605 if ((
IsNaN(quantum) != 0) || (quantum <= 0.0))
607 if ((quantum/281479271743489.0) >= 65535.0)
609 return((
unsigned short) (quantum/281479271743489.0+0.5));
612 static inline Quantum ScaleShortToQuantum(
const unsigned short value)
614 return((
Quantum) (281479271743489.0*value));
620 typedef union _SinglePrecision
649 map.single_precision=value;
650 sign_bit=(map.fixed_point >> 16) & 0x00008000;
652 significand=map.fixed_point & 0x007fffff;
659 return((
unsigned short) sign_bit);
660 significand=significand | 0x00800000;
661 shift=(int) (14-exponent);
662 significand=(
unsigned int) ((significand+((1 << (shift-1))-1)+
663 ((significand >> shift) & 0x01)) >> shift);
664 return((
unsigned short) (sign_bit | significand));
669 if (significand == 0)
674 half=(
unsigned short) (sign_bit | significand |
679 significand=significand+((significand >>
SignificandShift) & 0x01)+0x00000fff;
680 if ((significand & 0x00800000) != 0)
697 for (i=0; i < 10; i++)
701 half=(
unsigned short) (sign_bit | (exponent << 10) |
706 #if defined(__cplusplus) || defined(c_plusplus)
#define magick_restrict
Definition: MagickCore.h:41
MagickDoubleType MagickRealType
Definition: magick-type.h:125
QuantumFormatType
Definition: quantum.h:45
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:39
MagickPrivate void ResetQuantumState(QuantumInfo *)
Definition: quantum.c:578
static const unsigned char * PushCharPixel(const unsigned char *magick_restrict pixels, unsigned char *magick_restrict pixel)
Definition: quantum-private.h:232
QuantumState state
Definition: quantum-private.h:82
size_t depth
Definition: quantum-private.h:48
float MagickFloatType
Definition: magick-type.h:43
static const unsigned char * PushLongPixel(const EndianType endian, const unsigned char *magick_restrict pixels, unsigned int *magick_restrict pixel)
Definition: quantum-private.h:240
double minimum
Definition: quantum-private.h:55
EndianType
Definition: quantum.h:31
size_t quantum
Definition: quantum-private.h:48
EndianType endian
Definition: quantum-private.h:79
static const unsigned char * PushFloatPixel(const EndianType endian, const unsigned char *magick_restrict pixels, MagickFloatType *magick_restrict pixel)
Definition: quantum-private.h:284
MagickBooleanType pack
Definition: quantum-private.h:63
MagickBooleanType
Definition: magick-type.h:198
static double PerceptibleReciprocal(const double x)
Definition: pixel-accessor.h:124
static Quantum ScaleAnyToQuantum(const QuantumAny quantum, const QuantumAny range)
Definition: quantum-private.h:314
static unsigned char * PopLongPixel(const EndianType endian, const unsigned int pixel, unsigned char *magick_restrict pixels)
Definition: quantum-private.h:192
static const unsigned char * PushShortPixel(const EndianType endian, const unsigned char *magick_restrict pixels, unsigned short *magick_restrict pixel)
Definition: quantum-private.h:264
unsigned int pixel
Definition: quantum-private.h:36
size_t MagickSizeType
Definition: magick-type.h:136
SemaphoreInfo * semaphore
Definition: quantum-private.h:85
#define MaxMap
Definition: magick-type.h:78
Definition: quantum-private.h:45
size_t pad
Definition: quantum-private.h:60
#define IsNaN(a)
Definition: magick-type.h:221
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:85
size_t bits
Definition: quantum-private.h:39
size_t extent
Definition: quantum-private.h:76
#define MagickMin(x, y)
Definition: image-private.h:37
double inverse_scale
Definition: quantum-private.h:33
static unsigned short SinglePrecisionToHalf(const float value)
Definition: quantum-private.h:618
#define MagickPrivate
Definition: method-attribute.h:81
struct _QuantumState QuantumState
static unsigned char * PopCharPixel(const unsigned char pixel, unsigned char *magick_restrict pixels)
Definition: quantum-private.h:185
static unsigned char * PopShortPixel(const EndianType endian, const unsigned short pixel, unsigned char *magick_restrict pixels)
Definition: quantum-private.h:214
double maximum
Definition: quantum-private.h:55
static QuantumAny ScaleQuantumToAny(const Quantum quantum, const QuantumAny range)
Definition: quantum-private.h:328
MagickBooleanType min_is_white
Definition: quantum-private.h:63
Definition: quantum-private.h:30
MagickSizeType QuantumAny
Definition: magick-type.h:157
QuantumAlphaType
Definition: quantum.h:38
Definition: semaphore.c:60
#define QuantumRange
Definition: magick-type.h:86