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// simd functions for panning
// Copyright (C) 2009, 2010 Tim Blechmann
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; see the file COPYING. If not, write to
// the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
#ifndef SIMD_PAN_HPP
#define SIMD_PAN_HPP
#include "vec.hpp"
#if defined(__GNUC__) && defined(NDEBUG)
#define always_inline inline __attribute__((always_inline))
#else
#define always_inline inline
#endif
namespace nova
{
template <typename F>
inline void pan2_vec(F * out0, F * out1, const F * in, F factor0, F factor1, unsigned int n)
{
do
{
F sig = *in++;
*out0++ = sig * factor0;
*out1++ = sig * factor1;
} while(--n);
}
template <typename F>
inline void pan2_vec(F * out0, F * out1, const F * in, F factor0, F slope0, F factor1, F slope1, unsigned int n)
{
do
{
F sig = *in++;
*out0++ = sig * factor0;
*out1++ = sig * factor1;
factor0 += slope0;
factor1 += slope1;
} while(--n);
}
namespace detail
{
template <typename F, unsigned int n>
struct pan2
{
static const int offset = vec<F>::size;
static always_inline void mp_iteration(F * out0, F * out1, const F * in, vec<F> const & factor0, vec<F> const & factor1)
{
vec<F> vin, vout0, vout1;
vin.load_aligned(in);
vout0 = vin * factor0;
vout1 = vin * factor1;
vout0.store_aligned(out0);
vout1.store_aligned(out1);
pan2<F, n-offset>::mp_iteration(out0+offset, out1+offset, in+offset, factor0, factor1);
}
static always_inline void mp_iteration(F * out0, F * out1, const F * in, vec<F> & factor0, vec<F> const & slope0,
vec<F> & factor1, vec<F> const & slope1)
{
vec<F> vin, vout0, vout1;
vin.load_aligned(in);
vout0 = vin * factor0;
vout1 = vin * factor1;
vout0.store_aligned(out0);
vout1.store_aligned(out1);
factor0 += slope0;
factor1 += slope1;
pan2<F, n-offset>::mp_iteration(out0+offset, out1+offset, in+offset, factor0, slope0, factor1, slope1);
}
};
template <typename F>
struct pan2<F, 0>
{
static always_inline void mp_iteration(F * out0, F * out1, const F * in, vec<F> const & factor0, vec<F> const & factor1)
{}
static always_inline void mp_iteration(F * out0, F * out1, const F * in, vec<F> & factor0, vec<F> const & slope0,
vec<F> & factor1, vec<F> const & slope1)
{}
};
} /* namespace detail */
template <typename F>
inline void pan2_vec_simd(F * out0, F * out1, const F * in, F factor0, F factor1, unsigned int n)
{
vec<F> vf0(factor0), vf1(factor1);
const int per_loop = vec<F>::objects_per_cacheline;
n /= per_loop;
do {
detail::pan2<F, per_loop>::mp_iteration(out0, out1, in, vf0, vf1);
out0 += per_loop; out1 += per_loop; in += per_loop;
} while(--n);
}
template <unsigned int n, typename F>
inline void pan2_vec_simd(F * out0, F * out1, const F * in, F factor0, F factor1)
{
vec<F> vf0(factor0), vf1(factor1);
detail::pan2<F, n>::mp_iteration(out0, out1, in, vf0, vf1);
}
template <typename F>
inline void pan2_vec_simd(F * out0, F * out1, const F * in, F factor0, F slope0, F factor1, F slope1, unsigned int n)
{
const int per_loop = vec<F>::objects_per_cacheline;
vec<F> vf0, vf1, vslope0, vslope1;
vslope0.set_vec(vf0.set_slope(factor0, slope0));
vslope1.set_vec(vf1.set_slope(factor1, slope1));
n /= per_loop;
do {
detail::pan2<F, per_loop>::mp_iteration(out0, out1, in, vf0, vslope0, vf1, vslope1);
out0 += per_loop; out1 += per_loop; in += per_loop;
} while(--n);
}
template <unsigned int n, typename F>
inline void pan2_vec_simd(F * out0, F * out1, const F * in, F factor0, F slope0, F factor1, F slope1)
{
vec<F> vf0, vf1, vslope0, vslope1;
vslope0.set_vec(vf0.set_slope(factor0, slope0));
vslope1.set_vec(vf1.set_slope(factor1, slope1));
detail::pan2<F, n>::mp_iteration(out0, out1, in, vf0, vslope0, vf1, vslope1);
}
} /* namespace nova */
#undef always_inline
#endif /* SIMD_PAN_HPP */
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