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)
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);
286 #if !defined(MAGICKCORE_HDRI_SUPPORT)
301 #if (MAGICKCORE_QUANTUM_DEPTH == 8)
302 static inline Quantum ScaleCharToQuantum(
const unsigned char value)
307 static inline Quantum ScaleLongToQuantum(
const unsigned int value)
309 #if !defined(MAGICKCORE_HDRI_SUPPORT)
310 return((
Quantum) ((value)/16843009UL));
312 return((
Quantum) (value/16843009.0));
322 #if !defined(MAGICKCORE_HDRI_SUPPORT)
329 static inline unsigned int ScaleQuantumToLong(
const Quantum quantum)
331 #if !defined(MAGICKCORE_HDRI_SUPPORT)
332 return((
unsigned int) (16843009UL*quantum));
336 if ((16843009.0*quantum) >= 4294967295.0)
337 return(4294967295UL);
338 return((
unsigned int) (16843009.0*quantum+0.5));
342 static inline unsigned int ScaleQuantumToMap(
const Quantum quantum)
345 return((
unsigned int)
MaxMap);
346 #if !defined(MAGICKCORE_HDRI_SUPPORT)
347 return((
unsigned int) quantum);
351 return((
unsigned int) (quantum+0.5));
355 static inline unsigned short ScaleQuantumToShort(
const Quantum quantum)
357 #if !defined(MAGICKCORE_HDRI_SUPPORT)
358 return((
unsigned short) (257UL*quantum));
362 if ((257.0*quantum) >= 65535.0)
364 return((
unsigned short) (257.0*quantum+0.5));
368 static inline Quantum ScaleShortToQuantum(
const unsigned short value)
370 #if !defined(MAGICKCORE_HDRI_SUPPORT)
371 return((
Quantum) ((value+128U)/257U));
373 return((
Quantum) (value/257.0));
376 #elif (MAGICKCORE_QUANTUM_DEPTH == 16)
377 static inline Quantum ScaleCharToQuantum(
const unsigned char value)
379 #if !defined(MAGICKCORE_HDRI_SUPPORT)
380 return((
Quantum) (257U*value));
382 return((
Quantum) (257.0*value));
386 static inline Quantum ScaleLongToQuantum(
const unsigned int value)
388 #if !defined(MAGICKCORE_HDRI_SUPPORT)
391 return((
Quantum) (value/65537.0));
401 #if !defined(MAGICKCORE_HDRI_SUPPORT)
408 static inline unsigned int ScaleQuantumToLong(
const Quantum quantum)
410 #if !defined(MAGICKCORE_HDRI_SUPPORT)
411 return((
unsigned int) (65537UL*quantum));
415 if ((65537.0*quantum) >= 4294967295.0)
417 return((
unsigned int) (65537.0*quantum+0.5));
421 static inline unsigned int ScaleQuantumToMap(
const Quantum quantum)
424 return((
unsigned int)
MaxMap);
425 #if !defined(MAGICKCORE_HDRI_SUPPORT)
426 return((
unsigned int) quantum);
430 return((
unsigned int) (quantum+0.5));
434 static inline unsigned short ScaleQuantumToShort(
const Quantum quantum)
436 #if !defined(MAGICKCORE_HDRI_SUPPORT)
437 return((
unsigned short) quantum);
441 if (quantum >= 65535.0)
443 return((
unsigned short) (quantum+0.5));
447 static inline Quantum ScaleShortToQuantum(
const unsigned short value)
451 #elif (MAGICKCORE_QUANTUM_DEPTH == 32)
452 static inline Quantum ScaleCharToQuantum(
const unsigned char value)
454 #if !defined(MAGICKCORE_HDRI_SUPPORT)
455 return((
Quantum) (16843009UL*value));
457 return((
Quantum) (16843009.0*value));
461 static inline Quantum ScaleLongToQuantum(
const unsigned int value)
472 #if !defined(MAGICKCORE_HDRI_SUPPORT)
473 return((
Quantum) (65537.0*value+0.5));
475 return((
Quantum) (65537.0*value));
479 static inline unsigned int ScaleQuantumToLong(
const Quantum quantum)
481 #if !defined(MAGICKCORE_HDRI_SUPPORT)
482 return((
unsigned int) quantum);
486 if ((quantum) >= 4294967295.0)
488 return((
unsigned int) (quantum+0.5));
492 static inline unsigned int ScaleQuantumToMap(
const Quantum quantum)
497 return((
unsigned int)
MaxMap);
498 #if !defined(MAGICKCORE_HDRI_SUPPORT)
502 return((
unsigned int) (quantum/65537.0+0.5));
506 static inline unsigned short ScaleQuantumToShort(
const Quantum quantum)
508 #if !defined(MAGICKCORE_HDRI_SUPPORT)
514 if ((quantum/65537.0) >= 65535.0)
516 return((
unsigned short) (quantum/65537.0+0.5));
520 static inline Quantum ScaleShortToQuantum(
const unsigned short value)
522 #if !defined(MAGICKCORE_HDRI_SUPPORT)
523 return((
Quantum) (65537UL*value));
525 return((
Quantum) (65537.0*value));
528 #elif (MAGICKCORE_QUANTUM_DEPTH == 64)
529 static inline Quantum ScaleCharToQuantum(
const unsigned char value)
531 return((
Quantum) (72340172838076673.0*value));
534 static inline Quantum ScaleLongToQuantum(
const unsigned int value)
536 return((
Quantum) (4294967297.0*value));
545 return((
Quantum) (281479271743489.0*value));
548 static inline unsigned int ScaleQuantumToLong(
const Quantum quantum)
550 return((
unsigned int) (quantum/4294967297.0+0.5));
553 static inline unsigned int ScaleQuantumToMap(
const Quantum quantum)
557 if ((quantum/281479271743489.0) >=
MaxMap)
558 return((
unsigned int)
MaxMap);
559 return((
unsigned int) (quantum/281479271743489.0+0.5));
562 static inline unsigned short ScaleQuantumToShort(
const Quantum quantum)
566 if ((quantum/281479271743489.0) >= 65535.0)
568 return((
unsigned short) (quantum/281479271743489.0+0.5));
571 static inline Quantum ScaleShortToQuantum(
const unsigned short value)
573 return((
Quantum) (281479271743489.0*value));
579 typedef union _SinglePrecision
591 register unsigned int
608 map.single_precision=value;
609 sign_bit=(map.fixed_point >> 16) & 0x00008000;
611 significand=map.fixed_point & 0x007fffff;
618 return((
unsigned short) sign_bit);
619 significand=significand | 0x00800000;
620 shift=(int) (14-exponent);
621 significand=(
unsigned int) ((significand+((1 << (shift-1))-1)+
622 ((significand >> shift) & 0x01)) >> shift);
623 return((
unsigned short) (sign_bit | significand));
628 if (significand == 0)
633 half=(
unsigned short) (sign_bit | significand |
638 significand=significand+((significand >>
SignificandShift) & 0x01)+0x00000fff;
639 if ((significand & 0x00800000) != 0)
656 for (i=0; i < 10; i++)
660 half=(
unsigned short) (sign_bit | (exponent << 10) |
665 #if defined(__cplusplus) || defined(c_plusplus)
#define MagickMin(x, y)
Definition: image-private.h:27
#define MagickULLConstant(c)
Definition: magick-type.h:39
MagickDoubleType MagickRealType
Definition: magick-type.h:129
#define MaxMap
Definition: magick-type.h:82
#define QuantumRange
Definition: magick-type.h:90
unsigned short Quantum
Definition: magick-type.h:89
MagickSizeType QuantumAny
Definition: magick-type.h:154
size_t MagickSizeType
Definition: magick-type.h:140
MagickBooleanType
Definition: magick-type.h:196
#define MagickPrivate
Definition: method-attribute.h:81
static double PerceptibleReciprocal(const double x)
Definition: pixel-accessor.h:124
struct _QuantumState QuantumState
static Quantum ScaleAnyToQuantum(const QuantumAny quantum, const QuantumAny range)
Definition: quantum-private.h:281
MagickPrivate void ResetQuantumState(QuantumInfo *)
Definition: quantum.c:578
static QuantumAny ScaleQuantumToAny(const Quantum quantum, const QuantumAny range)
Definition: quantum-private.h:295
static unsigned char * PopCharPixel(const unsigned char pixel, unsigned char *pixels)
Definition: quantum-private.h:185
static MagickSizeType GetQuantumRange(const size_t depth)
Definition: quantum-private.h:94
static const unsigned char * PushCharPixel(const unsigned char *pixels, unsigned char *pixel)
Definition: quantum-private.h:232
static unsigned char * PopShortPixel(const EndianType endian, const unsigned short pixel, unsigned char *pixels)
Definition: quantum-private.h:214
static unsigned char * PopLongPixel(const EndianType endian, const unsigned int pixel, unsigned char *pixels)
Definition: quantum-private.h:192
static const unsigned char * PushShortPixel(const EndianType endian, const unsigned char *pixels, unsigned short *pixel)
Definition: quantum-private.h:262
static const unsigned char * PushLongPixel(const EndianType endian, const unsigned char *pixels, unsigned int *pixel)
Definition: quantum-private.h:239
static unsigned short SinglePrecisionToHalf(const float value)
Definition: quantum-private.h:577
static float HalfToSinglePrecision(const unsigned short half)
Definition: quantum-private.h:110
QuantumFormatType
Definition: quantum.h:45
QuantumAlphaType
Definition: quantum.h:38
EndianType
Definition: quantum.h:31
@ LSBEndian
Definition: quantum.h:33
Definition: semaphore.c:60
Definition: quantum-private.h:46
MagickBooleanType pack
Definition: quantum-private.h:64
size_t number_threads
Definition: quantum-private.h:70
QuantumAlphaType alpha_type
Definition: quantum-private.h:67
size_t depth
Definition: quantum-private.h:48
double scale
Definition: quantum-private.h:57
QuantumState state
Definition: quantum-private.h:82
EndianType endian
Definition: quantum-private.h:79
MagickBooleanType min_is_white
Definition: quantum-private.h:63
MemoryInfo ** pixels
Definition: quantum-private.h:73
size_t signature
Definition: quantum-private.h:88
SemaphoreInfo * semaphore
Definition: quantum-private.h:85
size_t quantum
Definition: quantum-private.h:49
double maximum
Definition: quantum-private.h:56
size_t extent
Definition: quantum-private.h:76
size_t pad
Definition: quantum-private.h:60
double minimum
Definition: quantum-private.h:55
QuantumFormatType format
Definition: quantum-private.h:52
Definition: quantum-private.h:31
double inverse_scale
Definition: quantum-private.h:33
const unsigned int * mask
Definition: quantum-private.h:42
size_t bits
Definition: quantum-private.h:39
unsigned int pixel
Definition: quantum-private.h:36