/*

  * 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