#include "config.h"

#ifdef HAVE_ARM_NEON_H
#include <arm_neon.h>
#endif

#include "AL/al.h"
#include "AL/alc.h"
#include "alMain.h"
#include "alu.h"


static __inline void ApplyCoeffs(ALuint Offset, ALfloat (*RESTRICT Values)[2],
                                 ALfloat (*RESTRICT Coeffs)[2],
                                 ALfloat left, ALfloat right)
{
    ALuint c;
    float32x4_t leftright4;
    {
        float32x2_t leftright2 = vdup_n_f32(0.0);
        leftright2 = vset_lane_f32(left, leftright2, 0);
        leftright2 = vset_lane_f32(right, leftright2, 1);
        leftright4 = vcombine_f32(leftright2, leftright2);
    }
    for(c = 0;c < HRIR_LENGTH;c += 2)
    {
        const ALuint o0 = (Offset+c)&HRIR_MASK;
        const ALuint o1 = (o0+1)&HRIR_MASK;
        float32x4_t vals = vcombine_f32(vld1_f32((float32_t*)&Values[o0][0]),
                                        vld1_f32((float32_t*)&Values[o1][0]));
        float32x4_t coefs = vld1q_f32((float32_t*)&Coeffs[c][0]);

        vals = vmlaq_f32(vals, coefs, leftright4);

        vst1_f32((float32_t*)&Values[o0][0], vget_low_f32(vals));
        vst1_f32((float32_t*)&Values[o1][0], vget_high_f32(vals));
    }
}

#define SUFFIX Neon
#define SAMPLER point32
#include "mixer_inc.c"
#undef SAMPLER
#define SAMPLER lerp32
#include "mixer_inc.c"
#undef SAMPLER
#define SAMPLER cubic32
#include "mixer_inc.c"
#undef SAMPLER
#undef SUFFIX