phase()

static FASTLED_FORCE_INLINE u8 fl::BinaryDither::phase ( u8 frame )

inlinestatic

The frame's offset pattern value Q: frame wrapped to VIRTUAL_BITS, bit-reversed so consecutive frames land far apart (0,1,2,3 -> 0,128,64,192), then shifted to the middle of its bin.

Definition at line 120 of file binary_dither.h.

                                                                {
        frame &= (0x01 << VIRTUAL_BITS) - 1;
        u8 q = 0;
        if (frame & 0x01) { q |= 0x80; }
        if (frame & 0x02) { q |= 0x40; }
        if (frame & 0x04) { q |= 0x20; }
        if (frame & 0x08) { q |= 0x10; }
        if (frame & 0x10) { q |= 0x08; }
        if (frame & 0x20) { q |= 0x04; }
        if (frame & 0x40) { q |= 0x02; }
        if (frame & 0x80) { q |= 0x01; }
        if (VIRTUAL_BITS < 8) {
            q += 0x01 << (7 - VIRTUAL_BITS);
        }
        return q;
    }

References FASTLED_FORCE_INLINE, fl::FL_NO_EXCEPT, and VIRTUAL_BITS.

Referenced by init(), and reseed().

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