inlines.h

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// Copyright (c) 2000-2001 Brad Hughes <bhughes@trolltech.com>
//
// Use, modification and distribution is allowed without limitation,
// warranty, or liability of any kind.
//

#ifndef INLINES_H
#define INLINES_H

#include "config.h"

// *fast* convenience functions

static inline void stereo16_from_stereopcm8(register short *l,
                                            register short *r,
                                            register uchar *c,
                                            long cnt)
{
    while (cnt >= 4l) {
        l[0] = c[0];
        r[0] = c[1];
        l[1] = c[2];
        r[1] = c[3];
        l[2] = c[4];
        r[2] = c[5];
        l[3] = c[6];
        r[3] = c[7];
        l += 4;
        r += 4;
        c += 8;
        cnt -= 4l;
    }

    if (cnt > 0l) {
        l[0] = c[0];
        r[0] = c[1];
        if (cnt > 1l) {
            l[1] = c[2];
            r[1] = c[3];
            if (cnt > 2l) {
                l[2] = c[4];
                r[2] = c[5];
            }
        }
    }
}


static inline void stereo16_from_stereopcm16(register short *l,
                                             register short *r,
                                             register short *s,
                                             long cnt)
{
    while (cnt >= 4l) {
        l[0] = s[0];
        r[0] = s[1];
        l[1] = s[2];
        r[1] = s[3];
        l[2] = s[4];
        r[2] = s[5];
        l[3] = s[6];
        r[3] = s[7];
        l += 4;
        r += 4;
        s += 8;
        cnt -= 4l;
    }

    if (cnt > 0l) {
        l[0] = s[0];
        r[0] = s[1];
        if (cnt > 1l) {
            l[1] = s[2];
            r[1] = s[3];
            if (cnt > 2l) {
                l[2] = s[4];
                r[2] = s[5];
            }
        }
    }
}


static inline void mono16_from_monopcm8(register short *l,
                                        register uchar *c,
                                        long cnt)
{
    while (cnt >= 4l) {
        l[0] = c[0];
        l[1] = c[1];
        l[2] = c[2];
        l[3] = c[3];
        l += 4;
        c += 4;
        cnt -= 4l;
    }

    if (cnt > 0l) {
        l[0] = c[0];
        if (cnt > 1l) {
            l[1] = c[1];
            if (cnt > 2l) {
                l[2] = c[2];
            }
        }
    }
}


static inline void mono16_from_monopcm16(register short *l,
                                         register short *s,
                                         long cnt)
{
    while (cnt >= 4l) {
        l[0] = s[0];
        l[1] = s[1];
        l[2] = s[2];
        l[3] = s[3];
        l += 4;
        s += 4;
        cnt -= 4l;
    }

    if (cnt > 0l) {
        l[0] = s[0];
        if (cnt > 1l) {
            l[1] = s[1];
            if (cnt > 2l) {
                l[2] = s[2];
            }
        }
    }
}

#if FFTW3_SUPPORT
static inline void fast_short_set(register short *p,
                                  short v,
                                  long c)
{
    while (c >= 4l) {
        p[0] = v;
        p[1] = v;
        p[2] = v;
        p[3] = v;
        p += 4;
        c -= 4l;
    }

    if (c > 0l) {
        p[0] = v;
        if (c > 1l) {
            p[1] = v;
            if (c > 2l) {
                p[2] = v;
            }
        }
    }
}


static inline void fast_real_set_from_short(register fftw_real *d,
                                            register short *s,
                                            long c)
{
    while (c >= 4l) {
        d[0] = fftw_real(s[0]);
        d[1] = fftw_real(s[1]);
        d[2] = fftw_real(s[2]);
        d[3] = fftw_real(s[3]);
        d += 4;
        s += 4;
        c -= 4l;
    }

    if (c > 0l) {
        d[0] = fftw_real(s[0]);
        if (c > 1l) {
            d[1] = fftw_real(s[1]);
            if (c > 2l) {
                d[2] = fftw_real(s[2]);
            }
        }
    }
}

static inline void fast_reals_set(register fftw_real *p1,
                                  register fftw_real *p2,
                                  fftw_real v,
                                  long c)
{
    while (c >= 4l) {
        p1[0] = v;
        p1[1] = v;
        p1[2] = v;
        p1[3] = v;
        p2[0] = v;
        p2[1] = v;
        p2[2] = v;
        p2[3] = v;
        p1 += 4;
        p2 += 4;
        c -= 4l;
    }

    if (c > 0l) {
        p1[0] = v;
        p2[0] = v;
        if (c > 1l) {
            p1[1] = v;
            p2[1] = v;
            if (c > 2l) {
                p1[2] = v;
                p2[2] = v;
            }
        }
    }
}
#endif // FFTW3_SUPPORT

#endif // INLINES_H

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