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)
327 #if !defined(MAGICKCORE_HDRI_SUPPORT)
338 #if (MAGICKCORE_QUANTUM_DEPTH == 8)
339 static inline Quantum ScaleCharToQuantum(
const unsigned char value)
344 static inline Quantum ScaleLongToQuantum(
const unsigned int value)
346 #if !defined(MAGICKCORE_HDRI_SUPPORT)
347 return((
Quantum) ((value)/16843009UL));
349 return((
Quantum) (value/16843009.0));
359 #if !defined(MAGICKCORE_HDRI_SUPPORT)
366 static inline unsigned int ScaleQuantumToLong(
const Quantum quantum)
368 #if !defined(MAGICKCORE_HDRI_SUPPORT)
369 return((
unsigned int) (16843009UL*quantum));
373 if ((16843009.0*quantum) >= 4294967295.0)
374 return(4294967295UL);
375 return((
unsigned int) (16843009.0*quantum+0.5));
379 static inline unsigned int ScaleQuantumToMap(
const Quantum quantum)
382 return((
unsigned int) MaxMap);
383 #if !defined(MAGICKCORE_HDRI_SUPPORT)
384 return((
unsigned int) quantum);
388 return((
unsigned int) (quantum+0.5));
392 static inline unsigned short ScaleQuantumToShort(
const Quantum quantum)
394 #if !defined(MAGICKCORE_HDRI_SUPPORT)
395 return((
unsigned short) (257UL*quantum));
399 if ((257.0*quantum) >= 65535.0)
401 return((
unsigned short) (257.0*quantum+0.5));
405 static inline Quantum ScaleShortToQuantum(
const unsigned short value)
407 #if !defined(MAGICKCORE_HDRI_SUPPORT)
408 return((
Quantum) ((value+128U)/257U));
410 return((
Quantum) (value/257.0));
413 #elif (MAGICKCORE_QUANTUM_DEPTH == 16)
414 static inline Quantum ScaleCharToQuantum(
const unsigned char value)
416 #if !defined(MAGICKCORE_HDRI_SUPPORT)
417 return((
Quantum) (257U*value));
419 return((
Quantum) (257.0*value));
423 static inline Quantum ScaleLongToQuantum(
const unsigned int value)
425 #if !defined(MAGICKCORE_HDRI_SUPPORT)
428 return((
Quantum) (value/65537.0));
438 #if !defined(MAGICKCORE_HDRI_SUPPORT)
445 static inline unsigned int ScaleQuantumToLong(
const Quantum quantum)
447 #if !defined(MAGICKCORE_HDRI_SUPPORT)
448 return((
unsigned int) (65537UL*quantum));
452 if ((65537.0*quantum) >= 4294967295.0)
454 return((
unsigned int) (65537.0*quantum+0.5));
458 static inline unsigned int ScaleQuantumToMap(
const Quantum quantum)
460 if (quantum >= (
Quantum) MaxMap)
461 return((
unsigned int) MaxMap);
462 #if !defined(MAGICKCORE_HDRI_SUPPORT)
463 return((
unsigned int) quantum);
467 return((
unsigned int) (quantum+0.5));
471 static inline unsigned short ScaleQuantumToShort(
const Quantum quantum)
473 #if !defined(MAGICKCORE_HDRI_SUPPORT)
474 return((
unsigned short) quantum);
478 if (quantum >= 65535.0)
480 return((
unsigned short) (quantum+0.5));
484 static inline Quantum ScaleShortToQuantum(
const unsigned short value)
488 #elif (MAGICKCORE_QUANTUM_DEPTH == 32)
489 static inline Quantum ScaleCharToQuantum(
const unsigned char value)
491 #if !defined(MAGICKCORE_HDRI_SUPPORT)
492 return((
Quantum) (16843009UL*value));
494 return((
Quantum) (16843009.0*value));
498 static inline Quantum ScaleLongToQuantum(
const unsigned int value)
509 #if !defined(MAGICKCORE_HDRI_SUPPORT)
510 return((
Quantum) (65537.0*value+0.5));
512 return((
Quantum) (65537.0*value));
516 static inline unsigned int ScaleQuantumToLong(
const Quantum quantum)
518 #if !defined(MAGICKCORE_HDRI_SUPPORT)
519 return((
unsigned int) quantum);
523 if ((quantum) >= 4294967295.0)
525 return((
unsigned int) (quantum+0.5));
529 static inline unsigned int ScaleQuantumToMap(
const Quantum quantum)
531 if ((quantum/65537) >= (
Quantum) MaxMap)
532 return((
unsigned int) MaxMap);
533 #if !defined(MAGICKCORE_HDRI_SUPPORT)
539 return((
unsigned int) (quantum/65537.0+0.5));
543 static inline unsigned short ScaleQuantumToShort(
const Quantum quantum)
545 #if !defined(MAGICKCORE_HDRI_SUPPORT)
551 if ((quantum/65537.0) >= 65535.0)
553 return((
unsigned short) (quantum/65537.0+0.5));
557 static inline Quantum ScaleShortToQuantum(
const unsigned short value)
559 #if !defined(MAGICKCORE_HDRI_SUPPORT)
560 return((
Quantum) (65537UL*value));
562 return((
Quantum) (65537.0*value));
565 #elif (MAGICKCORE_QUANTUM_DEPTH == 64)
566 static inline Quantum ScaleCharToQuantum(
const unsigned char value)
568 return((
Quantum) (72340172838076673.0*value));
571 static inline Quantum ScaleLongToQuantum(
const unsigned int value)
573 return((
Quantum) (4294967297.0*value));
582 return((
Quantum) (281479271743489.0*value));
585 static inline unsigned int ScaleQuantumToLong(
const Quantum quantum)
587 return((
unsigned int) (quantum/4294967297.0+0.5));
590 static inline unsigned int ScaleQuantumToMap(
const Quantum quantum)
594 if ((quantum/281479271743489.0) >= MaxMap)
595 return((
unsigned int) MaxMap);
596 return((
unsigned int) (quantum/281479271743489.0+0.5));
599 static inline unsigned short ScaleQuantumToShort(
const Quantum quantum)
603 if ((quantum/281479271743489.0) >= 65535.0)
605 return((
unsigned short) (quantum/281479271743489.0+0.5));
608 static inline Quantum ScaleShortToQuantum(
const unsigned short value)
610 return((
Quantum) (281479271743489.0*value));
616 typedef union _SinglePrecision
628 register unsigned int
645 map.single_precision=value;
646 sign_bit=(map.fixed_point >> 16) & 0x00008000;
648 significand=map.fixed_point & 0x007fffff;
655 return((
unsigned short) sign_bit);
656 significand=significand | 0x00800000;
657 shift=(int) (14-exponent);
658 significand=(
unsigned int) ((significand+((1 << (shift-1))-1)+
659 ((significand >> shift) & 0x01)) >> shift);
660 return((
unsigned short) (sign_bit | significand));
665 if (significand == 0)
670 half=(
unsigned short) (sign_bit | significand |
675 significand=significand+((significand >>
SignificandShift) & 0x01)+0x00000fff;
676 if ((significand & 0x00800000) != 0)
693 for (i=0; i < 10; i++)
697 half=(
unsigned short) (sign_bit | (exponent << 10) |
702 #if defined(__cplusplus) || defined(c_plusplus)
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
QuantumState state
Definition: quantum-private.h:82
size_t depth
Definition: quantum-private.h:48
float MagickFloatType
Definition: magick-type.h:43
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 * 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:191
static double PerceptibleReciprocal(const double x)
Definition: pixel-accessor.h:124
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:136
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:78
Definition: quantum-private.h:45
size_t pad
Definition: quantum-private.h:60
#define IsNaN(a)
Definition: magick-type.h:214
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
Definition: magick-type.h:193
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
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:614
#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:150
QuantumAlphaType
Definition: quantum.h:38
Definition: semaphore.c:59
#define QuantumRange
Definition: magick-type.h:86
static const unsigned char * PushFloatPixel(const EndianType endian, const unsigned char *pixels, MagickFloatType *pixel)
Definition: quantum-private.h:281