/*

 * LIBOIL - Library of Optimized Inner Loops

 * Copyright (c) 2001,2002,2003,2004 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.

 */

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

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <liboil/liboil.h>

#include <liboil/liboiltest.h>

#include <liboil/liboilrandom.h>

#include "liboil/dct/dct.h"

#include <math.h>

#ifdef __SYMBIAN32__

#ifdef __WINSCW__

#pragma warn_unusedarg off 

#endif//__WINSCW__

#endif//__SYMBIAN32__

static void

idct8theora_s16_test (OilTest *test)

{

  int i;

  int stride = test->params[OIL_ARG_SSTR1].value;

  uint16_t *ptr = (uint16_t *)oil_test_get_source_data(test,OIL_ARG_SRC1);

  for(i=0;i<8;i++){

    OIL_GET(ptr, i*stride, int16_t) = oil_rand_s16() >> 3;

    //OIL_GET(ptr, i*stride, int16_t) = 0;

  }

  //OIL_GET(ptr, 0*stride, int16_t) = 100;

}

static void

idct8x8theora_s16_test (OilTest *test)

{

  int i;

  int j;

  int stride = test->params[OIL_ARG_SSTR1].value;

  uint16_t *ptr = (uint16_t *)oil_test_get_source_data(test,OIL_ARG_SRC1);

  for(i=0;i<8;i++){

    for(j=0;j<8;j++){

      OIL_GET(ptr, i*stride + j*2, int16_t) = oil_rand_s16() >> 3;

    }

  }

}

/**

 * oil_idct8theora_s16:

 * @d_8:

 * @dstr:

 * @s_8:

 * @sstr:

 *

 * Performs a Inverse Discrete Cosine Transform on @s_8 and places

 * the result in @d_8, as defined by the Theora specification.

 */

OIL_DEFINE_CLASS_FULL (idct8theora_s16, "int16_t *d_8, int dstr, int16_t *s_8, int sstr", idct8theora_s16_test);

/**

 * oil_idct8x8theora_s16:

 * @d_8x8:

 * @dstr:

 * @s_8x8:

 * @sstr:

 *

 * Performs a Inverse Discrete Cosine Transform on @s_8x8 and places

 * the result in @d_8x8, as defined by the Theora specification.

 */

OIL_DEFINE_CLASS_FULL (idct8x8theora_s16, "int16_t *d_8x8, int dstr, int16_t *s_8x8, int sstr", idct8x8theora_s16_test);

#define C1 64277

#define C2 60547

#define C3 54491

#define C4 46341

#define C5 36410

#define C6 25080

#define C7 12785

#define S7 64277

#define S6 60547

#define S5 54491

#define S4 46341

#define S3 36410

#define S2 25080

#define S1 12785

#define TRUNC(x) ((int16_t)x)

#define MULT(a,b) (((a)*(b))>>16)

static void

idct8theora_s16_ref (int16_t *dest, int dstr, const int16_t *src, int sstr)

{

  int32_t t[10];

  int32_t r;

#define Y(i) OIL_GET(src,sstr*(i),int16_t)

#define X(i) OIL_GET(dest,sstr*(i),int16_t)

  /* the ordering here corresponds closely to the theora spec */

  t[0] = MULT(C4, Y(0) + Y(4));

  t[0] = TRUNC(t[0]);

  t[1] = MULT(C4, Y(0) - Y(4));

  t[1] = TRUNC(t[1]);

  t[2] = MULT(C6, Y(2)) - MULT(S6, Y(6));

  t[3] = MULT(S6, Y(2)) + MULT(C6, Y(6));

  t[4] = MULT(C7, Y(1)) - MULT(S7, Y(7));

  t[5] = MULT(C3, Y(5)) - MULT(S3, Y(3));

  t[6] = MULT(S3, Y(5)) + MULT(C3, Y(3));

  t[7] = MULT(S7, Y(1)) + MULT(C7, Y(7));

  r = t[4] + t[5];

  t[5] = MULT(C4, t[4] - t[5]);

  t[5] = TRUNC(t[5]);

  t[4] = r;

  r = t[7] + t[6];

  t[6] = MULT(C4, t[7] - t[6]);

  t[6] = TRUNC(t[6]);

  t[7] = r;

  r = t[0] + t[3];

  t[3] = t[0] - t[3];

  t[0] = r;

  r = t[1] + t[2];

  t[2] = t[1] - t[2];

  t[1] = r;

  r = t[6] + t[5];

  t[5] = t[6] - t[5];

  t[6] = r;

  r = t[0] + t[7];

  r = TRUNC(r);

  X(0) = r;

  r = t[1] + t[6];

  r = TRUNC(r);

  X(1) = r;

  r = t[2] + t[5];

  r = TRUNC(r);

  X(2) = r;

  r = t[3] + t[4];

  r = TRUNC(r);

  X(3) = r;

  r = t[3] - t[4];

  r = TRUNC(r);

  X(4) = r;

  r = t[2] - t[5];

  r = TRUNC(r);

  X(5) = r;

  r = t[1] - t[6];

  r = TRUNC(r);

  X(6) = r;

  r = t[0] - t[7];

  r = TRUNC(r);

  X(7) = r;

}

OIL_DEFINE_IMPL_REF (idct8theora_s16_ref, idct8theora_s16);

static void

idct8x8theora_s16_ref (int16_t *dest, int dstr, const int16_t *src, int sstr)

{

  int i;

  int16_t tmp[64];

  for(i=0;i<8;i++){

    idct8theora_s16_ref(

        OIL_OFFSET(tmp, 8*sizeof(int16_t) * i), sizeof(int16_t),

        OIL_OFFSET(src, sstr * i), sizeof(int16_t));

  }

  for(i=0;i<8;i++){

    idct8theora_s16_ref(

        OIL_OFFSET(dest, sizeof(int16_t) * i), dstr,

        OIL_OFFSET(tmp, sizeof(int16_t) * i), sizeof(int16_t) * 8);

  }

}

OIL_DEFINE_IMPL_REF (idct8x8theora_s16_ref, idct8x8theora_s16);

#ifdef	__SYMBIAN32__

OilFunctionClass* __oil_function_class_idct8theora_s16() {

		return &_oil_function_class_idct8theora_s16;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionClass* __oil_function_class_idct8x8theora_s16() {

		return &_oil_function_class_idct8x8theora_s16;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_idct8theora_s16_ref() {

		return &_oil_function_impl_idct8theora_s16_ref;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_idct8x8theora_s16_ref() {

		return &_oil_function_impl_idct8x8theora_s16_ref;

}

#endif

#ifdef	__SYMBIAN32__

EXPORT_C void** _oil_function_class_ptr_idct8theora_s16 ()	{

	oil_function_class_ptr_idct8theora_s16 = __oil_function_class_idct8theora_s16();

	return &oil_function_class_ptr_idct8theora_s16->func;

	}

#endif

#ifdef	__SYMBIAN32__

EXPORT_C void** _oil_function_class_ptr_idct8x8theora_s16 ()	{

	oil_function_class_ptr_idct8x8theora_s16 = __oil_function_class_idct8x8theora_s16();

	return &oil_function_class_ptr_idct8x8theora_s16->func;

	}

#endif