Detailed Description

Functions for doing a rotation of bits/bytes used by parallel output.

Definition in file bitswap.h.

#include "FastLED.h"
#include "fl/force_inline.h"

Include dependency graph for bitswap.h:

This graph shows which files directly or indirectly include this file:

Classes
union	bitswap_type
	Union containing a full 8 bytes to swap the bit orientation on. More...

struct	bitswap_type.__unnamed0__

union	just8bits
	Structure representing 8 bits of access. More...

struct	just8bits.__unnamed0__

struct	sub4
	Structure representing 32 bits of access. More...

Macros
#define	SWAPS(X, N)
	Set `out.X` bits to bit N of both `in.a` and `in.b` in order.

#define	SWAPSA(X, N)
	Set `out.X` bits 0, 1, 2, and 3 to bit N of `in.a.a`, `in.a.b`, `in.a.b`, `in.a.c`, and `in.a.d`

#define	SWAPSB(X, N)
	Set `out.X` bits 0, 1, 2, and 3 to bit N of `in.b.a`, `in.b.b`, `in.b.b`, `in.b.c`, and `in.b.d`

Functions
FASTLED_FORCE_INLINE void	slowswap (unsigned char A, unsigned char B)
	Slow version of the 8 byte by 8 bit rotation.

FASTLED_FORCE_INLINE void	swapbits8 (bitswap_type in, bitswap_type &out)
	Do an 8-byte by 8-bit rotation.

template<int m, int n>
FASTLED_FORCE_INLINE void	transpose8 (unsigned char A, unsigned char B)
	Templated bit-rotating function.

FASTLED_FORCE_INLINE void	transpose8x1 (unsigned char A, unsigned char B)
	Simplified form of bits rotating function.

FASTLED_FORCE_INLINE void	transpose8x1_MSB (unsigned char A, unsigned char B)
	Simplified form of bits rotating function.

void	transpose8x1_noinline (unsigned char A, unsigned char B)
	Simplified form of bits rotating function.

Class Documentation

union bitswap_type

Class Members
struct bitswap_type.__unnamed0__	__unnamed__
uint8_t	bytes[8]	eight 8-bit values to load for swapping
uint32_t	word[2]	two 32-bit values to load for swapping

struct bitswap_type.__unnamed0__

Class Members
sub4	a	32-bit access struct for bit swapping, upper four bytes (word[0] or bytes[0-3])
sub4	b	32-bit access struct for bit swapping, lower four bytes (word[1] or bytes[4-7])

union just8bits

Class Members
struct just8bits.__unnamed0__	__unnamed__
uint8_t	raw	the entire byte

struct just8bits.__unnamed0__

struct sub4