//Portions Copyright (c)  2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 

/*

Copyright 2002,2003,2004,2005 David A. Schleef <ds@schleef.org>

  All rights reserved.

  Redistribution and use in source and binary forms, with or without

  modification, are permitted provided that the following conditions

  are met:

  1. Redistributions of source code must retain the above copyright

     notice, this list of conditions and the following disclaimer.

  2. Redistributions in binary form must reproduce the above copyright

     notice, this list of conditions and the following disclaimer in the

     documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

  IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

  ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,

  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

  IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

  POSSIBILITY OF SUCH DAMAGE.

*/

#include <liboil/liboilfunction.h>

#include <liboil/liboilclasses.h>

void

split_53_nomix (int16_t *d_2xn, int16_t *s_2xn, int n)

{

  int i;

  if (n == 0) return;

  /* predict */

  for(i=1;i<n*2-2;i+=2){

    d_2xn[i] = s_2xn[i] - ((s_2xn[i-1] + s_2xn[i+1]) >> 1);

  }

  d_2xn[n*2-1] = s_2xn[n*2-1] - s_2xn[n*2-2];

  /* update */

  d_2xn[0] = s_2xn[0] + (d_2xn[1] >> 1);

  for(i=2;i<n*2;i+=2){

    d_2xn[i] = s_2xn[i] + ((d_2xn[i-1] + d_2xn[i+1]) >> 2);

  }

} 

OIL_DEFINE_IMPL (split_53_nomix, split_53);

#if 0

void

synth_53_nomix (int16_t *d_2xn, int16_t *s_2xn, int n)

{ 

  int i;

  /* predict */ 

  i_n[0] -= i_n[1] >> 1;

  for(i=2;i<n*2;i+=2){

    i_n[i] -= (i_n[i-1] + i_n[i+1]) >> 2;

  }

  /* update */

  for(i=1;i<n*2-2;i+=2){

    i_n[i] += (i_n[i+1] + i_n[i-1]) >> 1;

  }

  i_n[n*2-1] += i_n[n*2-2];

}

#endif

void

split_53_c (int16_t *d_2xn, int16_t *s_2xn, int n)

{

  int i;

  if (n == 0) return;

  if (n == 1) {

    d_2xn[1] = s_2xn[1] - s_2xn[0];

    d_2xn[0] = s_2xn[0] + (d_2xn[1] >> 1);

  } else {

    d_2xn[1] = s_2xn[1] - ((s_2xn[0] + s_2xn[2]) >> 1);

    d_2xn[0] = s_2xn[0] + (d_2xn[1] >> 1);

    d_2xn+=2;

    s_2xn+=2;

    for(i=0;i<(n*2-4)/2;i++){

      d_2xn[1] = s_2xn[1] - ((s_2xn[0] + s_2xn[2]) >> 1);

      d_2xn[0] = s_2xn[0] + ((d_2xn[-1] + d_2xn[1]) >> 2);

      d_2xn+=2;

      s_2xn+=2;

    }

    d_2xn[1] = s_2xn[1] - s_2xn[0];

    d_2xn[0] = s_2xn[0] + ((d_2xn[-1] + d_2xn[1]) >> 2);

  }

}

OIL_DEFINE_IMPL (split_53_c, split_53);

void

synth_53_c (int16_t *d_2xn, int16_t *s_2xn, int n)

{

  int i;

  if (n == 0) return;

  if (n == 1) {

    d_2xn[0] = s_2xn[0] - (s_2xn[1] >> 1);

    d_2xn[1] = s_2xn[1] + d_2xn[0];

  } else {

    d_2xn[0] = s_2xn[0] - (s_2xn[1] >> 1);

    for(i=2;i<n*2-2;i+=2){

      d_2xn[i] = s_2xn[i] - ((s_2xn[i-1] + s_2xn[i+1]) >> 2);

      d_2xn[i-1] = s_2xn[i-1] + ((d_2xn[i] + d_2xn[i-2]) >> 1);

    }

    d_2xn[n*2-2] = s_2xn[n*2-2] - ((s_2xn[n*2-3] + s_2xn[n*2-1]) >> 2);

    d_2xn[n*2-3] = s_2xn[n*2-3] + ((d_2xn[n*2-2] + d_2xn[n*2-4]) >> 1);

    d_2xn[n*2-1] = s_2xn[n*2-1] + d_2xn[n*2-2];

  }

}

OIL_DEFINE_IMPL (synth_53_c, synth_53);

void

deinterleave2_c_1 (int16_t *d1, int16_t *d2, int16_t *s_2xn, int n)

{

  int i;

  for(i=0;i<n;i++) {

    d1[i] = s_2xn[2*i];

    d2[i] = s_2xn[2*i + 1];

  }

}

OIL_DEFINE_IMPL (deinterleave2_c_1, deinterleave2_s16);

void

deinterleave2_asm (int16_t *d1, int16_t *d2, int16_t *s_2xn, int n)

{

  if (n == 0) return;

  while (n&1) {

    d1[0] = s_2xn[0];

    d2[0] = s_2xn[1];

    d1++;

    d2++;

    s_2xn+=2;

    n--;

  }

  asm volatile ("\n"

      "  mov %3, %%ecx\n"

      "  sub $2, %%ecx\n"

      "1:\n"

      "  movw (%1,%%ecx,4), %%ax\n"

      "  movw %%ax, (%0,%%ecx,2)\n"

      "  movw 2(%1,%%ecx,4), %%ax\n"

      "  movw %%ax, (%2,%%ecx,2)\n"

      "  movw 4(%1,%%ecx,4), %%ax\n"

      "  movw %%ax, 2(%0,%%ecx,2)\n"

      "  movw 6(%1,%%ecx,4), %%ax\n"

      "  movw %%ax, 2(%2,%%ecx,2)\n"

      "  sub $2, %%ecx\n"

      "  jge 1b\n"

      : "+r" (d1), "+r" (s_2xn), "+r" (d2)

      : "m" (n)

      : "eax", "ecx");

}

OIL_DEFINE_IMPL (deinterleave2_asm, deinterleave2_s16);

void

deinterleave2_mmx (int16_t *d1, int16_t *d2, int16_t *s_2xn, int n)

{

  while (n&3) {

    d1[0] = s_2xn[0];

    d2[0] = s_2xn[1];

    d1++;

    d2++;

    s_2xn+=2;

    n--;

  }

  if (n==0) return;

  asm volatile ("\n"

      "  xor %%ecx, %%ecx\n"

      "1:\n"

      "  movq (%1,%%ecx,4), %%mm0\n"

      "  movq 8(%1,%%ecx,4), %%mm1\n"

      "  pslld $16, %%mm0\n"

      "  pslld $16, %%mm1\n"

      "  psrad $16, %%mm0\n"

      "  psrad $16, %%mm1\n"

      "  packssdw %%mm1, %%mm0\n"

      "  movq %%mm0, (%0,%%ecx,2)\n"

      "  movq (%1,%%ecx,4), %%mm0\n"

      "  movq 8(%1,%%ecx,4), %%mm1\n"

      "  psrad $16, %%mm0\n"

      "  psrad $16, %%mm1\n"

      "  packssdw %%mm1, %%mm0\n"

      "  movq %%mm0, (%2,%%ecx,2)\n"

      "  add $4, %%ecx\n"

      "  cmp %3, %%ecx\n"

      "  jl 1b\n"

      "  emms\n"

      : "+r" (d1), "+r" (s_2xn), "+r" (d2)

      : "m" (n)

      : "eax", "ecx");

}

OIL_DEFINE_IMPL_FULL (deinterleave2_mmx, deinterleave2_s16, OIL_IMPL_FLAG_MMX);

void

deinterleave2_mmx_2 (int16_t *d1, int16_t *d2, int16_t *s_2xn, int n)

{

  while (n&3) {

    d1[0] = s_2xn[0];

    d2[0] = s_2xn[1];

    d1++;

    d2++;

    s_2xn+=2;

    n--;

  }

  if (n==0) return;

  asm volatile ("\n"

      "  xor %%ecx, %%ecx\n"

      "1:\n"

      "  pshufw $0xd8, (%1,%%ecx,4), %%mm0\n"

      "  movd %%mm0, (%0,%%ecx,2)\n"

      "  pshufw $0x8d, (%1,%%ecx,4), %%mm0\n"

      "  movd %%mm0, (%2,%%ecx,2)\n"

      "  add $2, %%ecx\n"

      "  cmp %3, %%ecx\n"

      "  jl 1b\n"

      "  emms\n"

      : "+r" (d1), "+r" (s_2xn), "+r" (d2)

      : "m" (n)

      : "eax", "ecx");

}

OIL_DEFINE_IMPL_FULL (deinterleave2_mmx_2, deinterleave2_s16, OIL_IMPL_FLAG_MMX | OIL_IMPL_FLAG_MMXEXT);

void

deinterleave2_mmx_3 (int16_t *d1, int16_t *d2, int16_t *s_2xn, int n)

{

  while (n&3) {

    d1[0] = s_2xn[0];

    d2[0] = s_2xn[1];

    d1++;

    d2++;

    s_2xn+=2;

    n--;

  }

  if (n==0) return;

  asm volatile ("\n"

      "  xor %%ecx, %%ecx\n"

      "1:\n"

      "  movq (%1,%%ecx,4), %%mm1\n"

      "  movq (%1,%%ecx,4), %%mm2\n"

      "  movq 8(%1,%%ecx,4), %%mm0\n"

      "  punpcklwd %%mm0, %%mm1\n"

      "  punpckhwd %%mm0, %%mm2\n"

      "  movq %%mm1, %%mm0\n"

      "  punpcklwd %%mm2, %%mm0\n"

      "  punpckhwd %%mm2, %%mm1\n"

      "  movq %%mm0, (%0,%%ecx,2)\n"

      "  movq %%mm1, (%2,%%ecx,2)\n"

      "  add $4, %%ecx\n"

      "  cmp %3, %%ecx\n"

      "  jl 1b\n"

      "  emms\n"

      : "+r" (d1), "+r" (s_2xn), "+r" (d2)

      : "m" (n)

      : "eax", "ecx");

}

OIL_DEFINE_IMPL_FULL (deinterleave2_mmx_3, deinterleave2_s16, OIL_IMPL_FLAG_MMX);

void

deinterleave2_mmx_4 (int16_t *d1, int16_t *d2, int16_t *s_2xn, int n)

{

  while (n&7) {

    d1[0] = s_2xn[0];

    d2[0] = s_2xn[1];

    d1++;

    d2++;

    s_2xn+=2;

    n--;

  }

  if (n==0) return;

  asm volatile ("\n"

      "  xor %%ecx, %%ecx\n"

      "1:\n"

      "  movq (%1,%%ecx,4), %%mm1\n"

      "  movq %%mm1, %%mm2\n"

      "  movq 8(%1,%%ecx,4), %%mm0\n"

      "   movq 16(%1,%%ecx,4), %%mm5\n"

      "  punpcklwd %%mm0, %%mm1\n"

      "   movq %%mm5, %%mm6\n"

      "  punpckhwd %%mm0, %%mm2\n"

      "   movq 24(%1,%%ecx,4), %%mm4\n"

      "  movq %%mm1, %%mm0\n"

      "   punpcklwd %%mm4, %%mm5\n"

      "  punpcklwd %%mm2, %%mm0\n"

      "   punpckhwd %%mm4, %%mm6\n"

      "  punpckhwd %%mm2, %%mm1\n"

      "   movq %%mm5, %%mm4\n"

      "  movq %%mm0, (%0,%%ecx,2)\n"

      "   punpcklwd %%mm6, %%mm4\n"

      "  movq %%mm1, (%2,%%ecx,2)\n"

      "   punpckhwd %%mm6, %%mm5\n"

      "   movq %%mm4, 8(%0,%%ecx,2)\n"

      "   movq %%mm5, 8(%2,%%ecx,2)\n"

      "  add $8, %%ecx\n"

      "  cmp %3, %%ecx\n"

      "  jl 1b\n"

      "  emms\n"

      : "+r" (d1), "+r" (s_2xn), "+r" (d2)

      : "m" (n)

      : "eax", "ecx");

}

OIL_DEFINE_IMPL_FULL (deinterleave2_mmx_4, deinterleave2_s16, OIL_IMPL_FLAG_MMX);

void

lift_add_mult_shift12_i386_mmx (int16_t *d, int16_t *s1, int16_t *s2,

    int16_t *s3, int16_t *s4, int n)

{

  uint32_t val = *s4;

  while (n&3) {

    d[0] = s1[0] + ((s4[0]*(s2[0] + s3[0]))>>12);

    d++;

    s1++;

    s2++;

    s3++;

    n--;

  }

  if (n==0) return;

  val = ((*(uint16_t *)s4)<<16) | (*(uint16_t *)s4);

  n>>=2;

  asm volatile ("\n"

      "  mov %4, %%ecx\n"

      "  movd %%ecx, %%mm7\n"

      "  punpcklwd %%mm7, %%mm7\n"

      "  mov %5, %%ecx\n"

      "1:\n"

      "  movq 0(%2), %%mm0\n"

      "  paddsw 0(%3), %%mm0\n"

      "  movq %%mm0, %%mm1\n"

      "  pmullw %%mm7, %%mm0\n"

      "  pmulhw %%mm7, %%mm1\n"

      "  psrlw $12, %%mm0\n"

      "  psllw $4, %%mm1\n"

      "  por %%mm1, %%mm0\n"

      "  paddsw 0(%1), %%mm0\n"

      "  movq %%mm0, 0(%0)\n"

      "  add $8, %0\n"

      "  add $8, %1\n"

      "  add $8, %2\n"

      "  add $8, %3\n"

      "  decl %%ecx\n"

      "  jne 1b\n"

      "  emms\n"

      : "+r" (d), "+r" (s1), "+r" (s2), "+r" (s3)

      : "m" (val), "m" (n)

      : "ecx");

}

OIL_DEFINE_IMPL_FULL (lift_add_mult_shift12_i386_mmx, lift_add_mult_shift12, OIL_IMPL_FLAG_MMX);

void

interleave2_mmx (int16_t *d_2xn, int16_t *s1, int16_t *s2, int n)

{

  while (n&3) {

    d_2xn[0] = s1[0];

    d_2xn[1] = s2[0];

    s1++;

    s2++;

    d_2xn+=2;

    n--;

  }

  if (n==0) return;

  asm volatile ("\n"

      "  xor %%ecx, %%ecx\n"

      "1:\n"

      "  movq (%1,%%ecx,2), %%mm0\n"

      "  movq (%2,%%ecx,2), %%mm1\n"

      "  movq %%mm0, %%mm2\n"

      "  punpckhwd %%mm1, %%mm0\n"

      "  punpcklwd %%mm1, %%mm2\n"

      "  movq %%mm2, (%0,%%ecx,4)\n"

      "  movq %%mm0, 8(%0,%%ecx,4)\n"

      "  add $4, %%ecx\n"

      "  cmp %3, %%ecx\n"

      "  jl 1b\n"

      "  emms\n"

      : "+r" (d_2xn), "+r" (s1), "+r" (s2)

      : "m" (n)

      : "eax", "ecx");

}

OIL_DEFINE_IMPL_FULL (interleave2_mmx, interleave2_s16, OIL_IMPL_FLAG_MMX);

void

lift_add_shift1_mmx (int16_t *d, int16_t *s1, int16_t *s2, int16_t *s3, int n)

{

  while (n&3) {

    d[0] = s1[0] + ((s2[0] + s3[0])>>1);

    d++;

    s1++;

    s2++;

    s3++;

    n--;

  }

  if (n==0) return;

  asm volatile ("\n"

      "  xor %%ecx, %%ecx\n"

      "1:\n"

      "  movq (%2,%%ecx,2), %%mm1\n"

      "  movq (%3,%%ecx,2), %%mm2\n"

      "  paddw %%mm2, %%mm1\n"

      "  psraw $1, %%mm1\n"

      "  paddw (%1,%%ecx,2), %%mm1\n"

      "  movq %%mm1, (%0,%%ecx,2)\n"

      "  add $4, %%ecx\n"

      "  cmp %4, %%ecx\n"

      "  jl 1b\n"

      "  emms\n"

      : "+r" (d), "+r" (s1), "+r" (s2), "+r" (s3)

      : "m" (n)

      : "ecx");

}

OIL_DEFINE_IMPL_FULL (lift_add_shift1_mmx, lift_add_shift1, OIL_IMPL_FLAG_MMX);

void

lift_sub_shift1_mmx (int16_t *d, int16_t *s1, int16_t *s2, int16_t *s3, int n)

{

  while (n&3) {

    d[0] = s1[0] - ((s2[0] + s3[0])>>1);

    d++;

    s1++;

    s2++;

    s3++;

    n--;

  }

  if (n==0) return;

  asm volatile ("\n"

      "  xor %%ecx, %%ecx\n"

      "1:\n"

      "  movq (%2,%%ecx,2), %%mm1\n"

      "  movq (%3,%%ecx,2), %%mm2\n"

      "  movq (%1,%%ecx,2), %%mm0\n"

      "  paddw %%mm2, %%mm1\n"

      "  psraw $1, %%mm1\n"

      "  psubw %%mm1, %%mm0\n"

      "  movq %%mm0, (%0,%%ecx,2)\n"

      "  add $4, %%ecx\n"

      "  cmp %4, %%ecx\n"

      "  jl 1b\n"

      "  emms\n"

      : "+r" (d), "+r" (s1), "+r" (s2), "+r" (s3)

      : "m" (n)

      : "ecx");

}

OIL_DEFINE_IMPL_FULL (lift_sub_shift1_mmx, lift_sub_shift1, OIL_IMPL_FLAG_MMX);

void

lift_add_shift2_mmx (int16_t *d, int16_t *s1, int16_t *s2, int16_t *s3, int n)

{

  while (n&3) {

    d[0] = s1[0] + ((s2[0] + s3[0])>>2);

    d++;

    s1++;

    s2++;

    s3++;

    n--;

  }

  if (n==0) return;

  asm volatile ("\n"

      "  xor %%ecx, %%ecx\n"

      "1:\n"

      "  movq (%2,%%ecx,2), %%mm1\n"

      "  movq (%3,%%ecx,2), %%mm2\n"

      "  paddw %%mm2, %%mm1\n"

      "  psraw $2, %%mm1\n"

      "  paddw (%1,%%ecx,2), %%mm1\n"

      "  movq %%mm1, (%0,%%ecx,2)\n"

      "  add $4, %%ecx\n"

      "  cmp %4, %%ecx\n"

      "  jl 1b\n"

      "  emms\n"

      : "+r" (d), "+r" (s1), "+r" (s2), "+r" (s3)

      : "m" (n)

      : "ecx");

}

OIL_DEFINE_IMPL_FULL (lift_add_shift2_mmx, lift_add_shift2, OIL_IMPL_FLAG_MMX);

void

lift_sub_shift2_mmx (int16_t *d, int16_t *s1, int16_t *s2, int16_t *s3, int n)

{

  while (n&3) {

    d[0] = s1[0] - ((s2[0] + s3[0])>>2);

    d++;

    s1++;

    s2++;

    s3++;

    n--;

  }

  if (n==0) return;

  asm volatile ("\n"

      "  xor %%ecx, %%ecx\n"

      "1:\n"

      "  movq (%2,%%ecx,2), %%mm1\n"

      "  movq (%3,%%ecx,2), %%mm2\n"

      "  movq (%1,%%ecx,2), %%mm0\n"

      "  paddw %%mm2, %%mm1\n"

      "  psraw $2, %%mm1\n"

      "  psubw %%mm1, %%mm0\n"

      "  movq %%mm0, (%0,%%ecx,2)\n"

      "  add $4, %%ecx\n"

      "  cmp %4, %%ecx\n"

      "  jl 1b\n"

      "  emms\n"

      : "+r" (d), "+r" (s1), "+r" (s2), "+r" (s3)

      : "m" (n)

      : "ecx");

}

OIL_DEFINE_IMPL_FULL (lift_sub_shift2_mmx, lift_sub_shift2, OIL_IMPL_FLAG_MMX);