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#    define RENAME(N) N ## _double

#    define DELEM  double

#    define CLIP(v)

#    define RENAME(N) N ## _float

#    define DELEM  float

#    define CLIP(v)

#    define RENAME(N) N ## _int32

#    define DELEM  int32_t

#    define CLIP(v) v = FFMAX(FFMIN(v, INT32_MAX), INT32_MIN)

#    define RENAME(N) N ## _int16

#    define DELEM  int16_t

#    define CLIP(v) v = FFMAX(FFMIN(v, INT16_MAX), INT16_MIN)

ERROR

#endif

    int pos = s->dither.ns_pos;

    int i, j, ch;

    int taps  = s->dither.ns_taps;

    float S   = s->dither.ns_scale;

    float S_1 = s->dither.ns_scale_1;

    av_assert2((taps&3) != 3 || s->dither.ns_coeffs[taps] == 0);

        const float *noise = ((const float *)noises->ch[ch]) + s->dither.noise_pos;

        const DELEM *src = (const DELEM*)srcs->ch[ch];

        DELEM *dst = (DELEM*)dsts->ch[ch];

        float *ns_errors = s->dither.ns_errors[ch];

        const float *ns_coeffs = s->dither.ns_coeffs;

        pos  = s->dither.ns_pos;

        for (i=0; i

            double d1, d = src[i]*S_1;

            for(j=0; j

                d -= ns_coeffs[j    ] * ns_errors[pos + j    ]

                    +ns_coeffs[j + 1] * ns_errors[pos + j + 1]

                    +ns_coeffs[j + 2] * ns_errors[pos + j + 2]

                    +ns_coeffs[j + 3] * ns_errors[pos + j + 3];

            }

            if(j < taps)

                d -= ns_coeffs[j] * ns_errors[pos + j];

            pos = pos ? pos - 1 : taps - 1;

            d1 = rint(d + noise[i]);

            ns_errors[pos + taps] = ns_errors[pos] = d1 - d;

            d1 *= S;

            CLIP(d1);

            dst[i] = d1;

        }

    }

}

#undef DELEM

#undef CLIP