sl@0: /*
sl@0:  * LIBOIL - Library of Optimized Inner Loops
sl@0:  * Copyright (c) 2001,2002,2003,2004 David A. Schleef <ds@schleef.org>
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
sl@0:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
sl@0:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
sl@0:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
sl@0:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
sl@0:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
sl@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
sl@0:  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
sl@0:  * POSSIBILITY OF SUCH DAMAGE.
sl@0:  */
sl@0: //Portions Copyright (c)  2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 
sl@0: 
sl@0: #ifdef HAVE_CONFIG_H
sl@0: #include "config.h"
sl@0: #endif
sl@0: 
sl@0: #include <liboil/liboil.h>
sl@0: #include "liboil/dct/dct.h"
sl@0: #include <math.h>
sl@0: #include <liboil/liboiltest.h>
sl@0: #include <liboil/liboilparameter.h>
sl@0: #include <liboil/liboilrandom.h>
sl@0: 
sl@0: /**
sl@0:  * SECTION:liboilfuncs-dct:
sl@0:  * @title: Direct Cosine Transform
sl@0:  * @short_description: DCT related functions
sl@0:  */
sl@0: 
sl@0: #define BLOCK8x8_F64(ptr, stride, row, column) \
sl@0: 	(*((double *)((unsigned char *)ptr + stride*row) + column))
sl@0: 
sl@0: #define BLOCK8x8_PTR_F64(ptr, stride, row, column) \
sl@0: 	((double *)((unsigned char *)ptr + stride*row) + column)
sl@0: 
sl@0: #define BLOCK8x8_S16(ptr, stride, row, column) \
sl@0: 	(*((int16_t *)((unsigned char *)ptr + stride*row) + column))
sl@0: 
sl@0: static void
sl@0: idct8x8_test (OilTest *test)
sl@0: {
sl@0:   int16_t *data = oil_test_get_source_data (test, OIL_ARG_SRC1);
sl@0:   int stride = oil_test_get_value (test, OIL_ARG_SSTR1);
sl@0:   int i, j;
sl@0: 
sl@0:   for(j=0;j<8;j++){
sl@0:     for(i=0;i<8;i++){
sl@0:       OIL_GET(data, i*2 + j*stride, int16_t) = (oil_rand_s16() & 0xfff) - 2048;
sl@0:     }
sl@0:   }
sl@0: }
sl@0: 
sl@0: /**
sl@0:  * oil_idct8x8_f64:
sl@0:  * @d_8x8:
sl@0:  * @dstr:
sl@0:  * @s_8x8:
sl@0:  * @sstr:
sl@0:  *
sl@0:  * Performs a 2-D Inverse Discrete Cosine Transform on @s_8x8 and places
sl@0:  * the result in @d_8x8.
sl@0:  */
sl@0: OIL_DEFINE_CLASS (idct8x8_f64, "double *d_8x8, int dstr, double *s_8x8, int sstr");
sl@0: /**
sl@0:  * oil_idct8x8lim10_f64:
sl@0:  * @d_8x8:
sl@0:  * @dstr:
sl@0:  * @s_8x8:
sl@0:  * @sstr:
sl@0:  *
sl@0:  * Performs a 2-D Inverse Discrete Cosine Transform on @s_8x8 and places
sl@0:  * the result in @d_8x8.
sl@0:  */
sl@0: OIL_DEFINE_CLASS (idct8x8lim10_f64, "double *d_8x8, int dstr, double *s_8x8, int sstr");
sl@0: /**
sl@0:  * oil_idct8x8_s16:
sl@0:  * @d_8x8:
sl@0:  * @dstr:
sl@0:  * @s_8x8:
sl@0:  * @sstr:
sl@0:  *
sl@0:  * Performs a limited 2-D Inverse Discrete Cosine Transform on @s_8x8
sl@0:  * and places the result in @d_8x8.
sl@0:  */
sl@0: OIL_DEFINE_CLASS_FULL (idct8x8_s16, "int16_t *d_8x8, int dstr, int16_t *s_8x8, int sstr", idct8x8_test);
sl@0: /**
sl@0:  * oil_idct8x8lim10_s16:
sl@0:  * @d_8x8:
sl@0:  * @dstr:
sl@0:  * @s_8x8:
sl@0:  * @sstr:
sl@0:  *
sl@0:  * Performs a limited 2-D Inverse Discrete Cosine Transform on @s_8x8
sl@0:  * and places the result in @d_8x8.  The source 8x8 block must be non-zero
sl@0:  * only in the 10 lowest-order components.
sl@0:  */
sl@0: OIL_DEFINE_CLASS (idct8x8lim10_s16, "int16_t *d_8x8, int dstr, int16_t *s_8x8, int sstr");
sl@0: 
sl@0: static void
sl@0: idct8x8_f64_ref (double *dest, int dstr, const double *src, int sstr)
sl@0: {
sl@0: 	static double idct_coeff[8][8];
sl@0: 	static int idct_coeff_init = 0;
sl@0: 	int i,j,k,l;
sl@0: 	double tmp1,tmp2;
sl@0: 
sl@0: 	if(!idct_coeff_init){
sl@0: 		double scale;
sl@0: 
sl@0: 		for(i=0;i<8;i++){
sl@0: 			scale = (i==0) ? sqrt(0.125) : 0.5;
sl@0: 			for(j=0;j<8;j++){
sl@0: 				idct_coeff[j][i] = scale *
sl@0: 					cos((M_PI/8)*i*(j+0.5));
sl@0: 			}
sl@0: 		}
sl@0: 		idct_coeff_init = 1;
sl@0: 	}
sl@0: 
sl@0: 	for(i=0;i<8;i++){
sl@0: 		for(j=0;j<8;j++){
sl@0: 			tmp1 = 0;
sl@0: 			for(k=0;k<8;k++){
sl@0: 				tmp2 = 0;
sl@0: 				for(l=0;l<8;l++){
sl@0: 					tmp2 += idct_coeff[j][l] *
sl@0: 						BLOCK8x8_F64(src,sstr,k,l);
sl@0: 				}
sl@0: 				tmp1 += idct_coeff[i][k] * tmp2;
sl@0: 			}
sl@0: 			BLOCK8x8_F64(dest,dstr,i,j) = tmp1;
sl@0: 		}
sl@0: 	}
sl@0: }
sl@0: OIL_DEFINE_IMPL_REF (idct8x8_f64_ref, idct8x8_f64);
sl@0: 
sl@0: static void
sl@0: idct8x8lim10_f64_ref (double *dest, int dstr, const double *src, int sstr)
sl@0: {
sl@0: 	static double idct_coeff[8][8];
sl@0: 	static int idct_coeff_init = 0;
sl@0: 	int i,j,k,l;
sl@0: 	double tmp1,tmp2;
sl@0: 
sl@0: 	if(!idct_coeff_init){
sl@0: 		double scale;
sl@0: 
sl@0: 		for(i=0;i<8;i++){
sl@0: 			scale = (i==0) ? sqrt(0.125) : 0.5;
sl@0: 			for(j=0;j<8;j++){
sl@0: 				idct_coeff[j][i] = scale *
sl@0: 					cos((M_PI/8)*i*(j+0.5));
sl@0: 			}
sl@0: 		}
sl@0: 		idct_coeff_init = 1;
sl@0: 	}
sl@0: 
sl@0: 	for(i=0;i<8;i++){
sl@0: 		for(j=0;j<8;j++){
sl@0: 			tmp1 = 0;
sl@0: 			for(k=0;k<4;k++){
sl@0: 				tmp2 = 0;
sl@0: 				for(l=0;l<4;l++){
sl@0: 					tmp2 += idct_coeff[j][l] *
sl@0: 						BLOCK8x8_F64(src,sstr,k,l);
sl@0: 				}
sl@0: 				tmp1 += idct_coeff[i][k] * tmp2;
sl@0: 			}
sl@0: 			BLOCK8x8_F64(dest,dstr,i,j) = tmp1;
sl@0: 		}
sl@0: 	}
sl@0: }
sl@0: OIL_DEFINE_IMPL_REF (idct8x8lim10_f64_ref, idct8x8lim10_f64);
sl@0: 
sl@0: #if defined(oil_idct8_f64)
sl@0: static void
sl@0: idct8x8_f64_c (double *dest, int dstr, const double *src, int sstr)
sl@0: {
sl@0: 	int i;
sl@0: 	double tmp[64];
sl@0: 	int tmpstr = 8*sizeof(double);
sl@0: 
sl@0: 	for(i=0;i<8;i++){
sl@0: 		oil_idct8_f64(
sl@0: 			BLOCK8x8_PTR_F64(tmp,tmpstr,i,0), sizeof(double),
sl@0: 			BLOCK8x8_PTR_F64(src,sstr,i,0), sizeof(double));
sl@0: 	}
sl@0: 	for(i=0;i<8;i++){
sl@0: 		oil_idct8_f64(
sl@0: 			BLOCK8x8_PTR_F64(dest,dstr,0,i), dstr,
sl@0: 			BLOCK8x8_PTR_F64(tmp,tmpstr,0,i), tmpstr);
sl@0: 	}
sl@0: }
sl@0: 
sl@0: OIL_DEFINE_IMPL_DEPENDS (idct8x8_f64_c, idct8x8_f64, idct8_f64);
sl@0: #endif
sl@0: 
sl@0: #if defined(oil_conv8x8_f64_s16) && defined(oil_idct8x8_f64) && \
sl@0:     defined(oil_conv8x8_s16_f64)
sl@0: static void
sl@0: idct8x8_s16_ref (int16_t *dest, int dstr, const int16_t *src, int sstr)
sl@0: {
sl@0: 	double s[64], d[64];
sl@0: 
sl@0: 	oil_conv8x8_f64_s16 (s,8*sizeof(double),src,sstr);
sl@0: 	oil_idct8x8_f64 (d,8*sizeof(double),s,8*sizeof(double));
sl@0: 	oil_conv8x8_s16_f64 (dest,dstr,d,8*sizeof(double));
sl@0: }
sl@0: 
sl@0: OIL_DEFINE_IMPL_REF (idct8x8_s16_ref, idct8x8_s16);
sl@0: #if 0
sl@0: OIL_DEFINE_IMPL_DEPENDS (idct8x8_s16_ref, idct8x8_s16,
sl@0:     conv8x8_f64_s16, idct8x8_f64, conv8x8_s16_f64);
sl@0: #endif
sl@0: #endif
sl@0: 
sl@0: #if defined(oil_conv8x8_f64_s16) && defined(oil_idct8x8lim10_f64) && \
sl@0:     defined(oil_conv8x8_s16_f64)
sl@0: static void
sl@0: idct8x8lim10_s16_ref (int16_t *dest, int dstr, const int16_t *src, int sstr)
sl@0: {
sl@0: 	double s[64], d[64];
sl@0: 
sl@0: 	oil_conv8x8_f64_s16 (s,8*sizeof(double),src,sstr);
sl@0: 	oil_idct8x8lim10_f64 (d,8*sizeof(double),s,8*sizeof(double));
sl@0: 	oil_conv8x8_s16_f64 (dest,dstr,d,8*sizeof(double));
sl@0: }
sl@0: 
sl@0: OIL_DEFINE_IMPL_REF (idct8x8lim10_s16_ref, idct8x8lim10_s16);
sl@0: #if 0
sl@0: OIL_DEFINE_IMPL_DEPENDS (idct8x8_s16_ref, idct8x8_s16,
sl@0:     conv8x8_f64_s16, idct8x8_f64, conv8x8_s16_f64);
sl@0: #endif
sl@0: #endif
sl@0: 
sl@0: 
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionClass* __oil_function_class_idct8x8_f64() {
sl@0: 		return &_oil_function_class_idct8x8_f64;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionClass* __oil_function_class_idct8x8lim10_f64() {
sl@0: 		return &_oil_function_class_idct8x8lim10_f64;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionClass* __oil_function_class_idct8x8_s16() {
sl@0: 		return &_oil_function_class_idct8x8_s16;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionClass* __oil_function_class_idct8x8lim10_s16() {
sl@0: 		return &_oil_function_class_idct8x8lim10_s16;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: 
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_idct8x8_f64_ref() {
sl@0: 		return &_oil_function_impl_idct8x8_f64_ref;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_idct8x8lim10_f64_ref() {
sl@0: 		return &_oil_function_impl_idct8x8lim10_f64_ref;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_idct8x8_s16_ref() {
sl@0: 		return &_oil_function_impl_idct8x8_s16_ref;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_idct8x8lim10_s16_ref() {
sl@0: 		return &_oil_function_impl_idct8x8lim10_s16_ref;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: 
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_idct8x8_f64_c() {
sl@0: 		return &_oil_function_impl_idct8x8_f64_c;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: EXPORT_C void** _oil_function_class_ptr_idct8x8_f64 ()	{
sl@0: 	oil_function_class_ptr_idct8x8_f64 = __oil_function_class_idct8x8_f64();
sl@0: 	return &oil_function_class_ptr_idct8x8_f64->func;
sl@0: 	}
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: EXPORT_C void** _oil_function_class_ptr_idct8x8lim10_f64 ()	{
sl@0: 	oil_function_class_ptr_idct8x8lim10_f64 = __oil_function_class_idct8x8lim10_f64();
sl@0: 	return &oil_function_class_ptr_idct8x8lim10_f64->func;
sl@0: 	}
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: EXPORT_C void** _oil_function_class_ptr_idct8x8_s16 ()	{
sl@0: 	oil_function_class_ptr_idct8x8_s16 = __oil_function_class_idct8x8_s16();
sl@0: 	return &oil_function_class_ptr_idct8x8_s16->func;
sl@0: 	}
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: EXPORT_C void** _oil_function_class_ptr_idct8x8lim10_s16 ()	{
sl@0: 	oil_function_class_ptr_idct8x8lim10_s16 = __oil_function_class_idct8x8lim10_s16();
sl@0: 	return &oil_function_class_ptr_idct8x8lim10_s16->func;
sl@0: 	}
sl@0: #endif
sl@0: