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/* WARNING: This file is generated by combine.pl from combine.inc.
Please edit one of those files rather than this one. */
#line 1 "pixman-combine.c.template"
#define COMPONENT_SIZE 16
#define MASK 0xffffULL
#define ONE_HALF 0x8000ULL
#define A_SHIFT 16 * 3
#define R_SHIFT 16 * 2
#define G_SHIFT 16
#define A_MASK 0xffff000000000000ULL
#define R_MASK 0xffff00000000ULL
#define G_MASK 0xffff0000ULL
#define RB_MASK 0xffff0000ffffULL
#define AG_MASK 0xffff0000ffff0000ULL
#define RB_ONE_HALF 0x800000008000ULL
#define RB_MASK_PLUS_ONE 0x10000000010000ULL
#define ALPHA_16(x) ((x) >> A_SHIFT)
#define RED_16(x) (((x) >> R_SHIFT) & MASK)
#define GREEN_16(x) (((x) >> G_SHIFT) & MASK)
#define BLUE_16(x) ((x) & MASK)
/*
* Helper macros.
*/
#define MUL_UN16(a, b, t) \
((t) = (a) * (b) + ONE_HALF, ((((t) >> G_SHIFT ) + (t) ) >> G_SHIFT ))
#define DIV_UN16(a, b) \
(((uint32_t) (a) * MASK) / (b))
#define ADD_UN16(x, y, t) \
((t) = x + y, \
(uint64_t) (uint16_t) ((t) | (0 - ((t) >> G_SHIFT))))
#define DIV_ONE_UN16(x) \
(((x) + ONE_HALF + (((x) + ONE_HALF) >> G_SHIFT)) >> G_SHIFT)
/*
* The methods below use some tricks to be able to do two color
* components at the same time.
*/
/*
* x_rb = (x_rb * a) / 255
*/
#define UN16_rb_MUL_UN16(x, a, t) \
do \
{ \
t = ((x) & RB_MASK) * (a); \
t += RB_ONE_HALF; \
x = (t + ((t >> G_SHIFT) & RB_MASK)) >> G_SHIFT; \
x &= RB_MASK; \
} while (0)
/*
* x_rb = min (x_rb + y_rb, 255)
*/
#define UN16_rb_ADD_UN16_rb(x, y, t) \
do \
{ \
t = ((x) + (y)); \
t |= RB_MASK_PLUS_ONE - ((t >> G_SHIFT) & RB_MASK); \
x = (t & RB_MASK); \
} while (0)
/*
* x_rb = (x_rb * a_rb) / 255
*/
#define UN16_rb_MUL_UN16_rb(x, a, t) \
do \
{ \
t = (x & MASK) * (a & MASK); \
t |= (x & R_MASK) * ((a >> R_SHIFT) & MASK); \
t += RB_ONE_HALF; \
t = (t + ((t >> G_SHIFT) & RB_MASK)) >> G_SHIFT; \
x = t & RB_MASK; \
} while (0)
/*
* x_c = (x_c * a) / 255
*/
#define UN16x4_MUL_UN16(x, a) \
do \
{ \
uint64_t r1, r2, t; \
\
r1 = (x); \
UN16_rb_MUL_UN16 (r1, a, t); \
\
r2 = (x) >> G_SHIFT; \
UN16_rb_MUL_UN16 (r2, a, t); \
\
x = r1 | (r2 << G_SHIFT); \
} while (0)
/*
* x_c = (x_c * a) / 255 + y_c
*/
#define UN16x4_MUL_UN16_ADD_UN16x4(x, a, y) \
do \
{ \
uint64_t r1, r2, r3, t; \
\
r1 = (x); \
r2 = (y) & RB_MASK; \
UN16_rb_MUL_UN16 (r1, a, t); \
UN16_rb_ADD_UN16_rb (r1, r2, t); \
\
r2 = (x) >> G_SHIFT; \
r3 = ((y) >> G_SHIFT) & RB_MASK; \
UN16_rb_MUL_UN16 (r2, a, t); \
UN16_rb_ADD_UN16_rb (r2, r3, t); \
\
x = r1 | (r2 << G_SHIFT); \
} while (0)
/*
* x_c = (x_c * a + y_c * b) / 255
*/
#define UN16x4_MUL_UN16_ADD_UN16x4_MUL_UN16(x, a, y, b) \
do \
{ \
uint64_t r1, r2, r3, t; \
\
r1 = x; \
r2 = y; \
UN16_rb_MUL_UN16 (r1, a, t); \
UN16_rb_MUL_UN16 (r2, b, t); \
UN16_rb_ADD_UN16_rb (r1, r2, t); \
\
r2 = (x >> G_SHIFT); \
r3 = (y >> G_SHIFT); \
UN16_rb_MUL_UN16 (r2, a, t); \
UN16_rb_MUL_UN16 (r3, b, t); \
UN16_rb_ADD_UN16_rb (r2, r3, t); \
\
x = r1 | (r2 << G_SHIFT); \
} while (0)
/*
* x_c = (x_c * a_c) / 255
*/
#define UN16x4_MUL_UN16x4(x, a) \
do \
{ \
uint64_t r1, r2, r3, t; \
\
r1 = x; \
r2 = a; \
UN16_rb_MUL_UN16_rb (r1, r2, t); \
\
r2 = x >> G_SHIFT; \
r3 = a >> G_SHIFT; \
UN16_rb_MUL_UN16_rb (r2, r3, t); \
\
x = r1 | (r2 << G_SHIFT); \
} while (0)
/*
* x_c = (x_c * a_c) / 255 + y_c
*/
#define UN16x4_MUL_UN16x4_ADD_UN16x4(x, a, y) \
do \
{ \
uint64_t r1, r2, r3, t; \
\
r1 = x; \
r2 = a; \
UN16_rb_MUL_UN16_rb (r1, r2, t); \
r2 = y & RB_MASK; \
UN16_rb_ADD_UN16_rb (r1, r2, t); \
\
r2 = (x >> G_SHIFT); \
r3 = (a >> G_SHIFT); \
UN16_rb_MUL_UN16_rb (r2, r3, t); \
r3 = (y >> G_SHIFT) & RB_MASK; \
UN16_rb_ADD_UN16_rb (r2, r3, t); \
\
x = r1 | (r2 << G_SHIFT); \
} while (0)
/*
* x_c = (x_c * a_c + y_c * b) / 255
*/
#define UN16x4_MUL_UN16x4_ADD_UN16x4_MUL_UN16(x, a, y, b) \
do \
{ \
uint64_t r1, r2, r3, t; \
\
r1 = x; \
r2 = a; \
UN16_rb_MUL_UN16_rb (r1, r2, t); \
r2 = y; \
UN16_rb_MUL_UN16 (r2, b, t); \
UN16_rb_ADD_UN16_rb (r1, r2, t); \
\
r2 = x >> G_SHIFT; \
r3 = a >> G_SHIFT; \
UN16_rb_MUL_UN16_rb (r2, r3, t); \
r3 = y >> G_SHIFT; \
UN16_rb_MUL_UN16 (r3, b, t); \
UN16_rb_ADD_UN16_rb (r2, r3, t); \
\
x = r1 | (r2 << G_SHIFT); \
} while (0)
/*
x_c = min(x_c + y_c, 255)
*/
#define UN16x4_ADD_UN16x4(x, y) \
do \
{ \
uint64_t r1, r2, r3, t; \
\
r1 = x & RB_MASK; \
r2 = y & RB_MASK; \
UN16_rb_ADD_UN16_rb (r1, r2, t); \
\
r2 = (x >> G_SHIFT) & RB_MASK; \
r3 = (y >> G_SHIFT) & RB_MASK; \
UN16_rb_ADD_UN16_rb (r2, r3, t); \
\
x = r1 | (r2 << G_SHIFT); \
} while (0)
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