/*
* 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/dct/dct.h"
#include <math.h>
#include <liboil/liboiltest.h>
#include <liboil/liboilparameter.h>
#include <liboil/liboilrandom.h>
/**
* SECTION:liboilfuncs-dct:
* @title: Direct Cosine Transform
* @short_description: DCT related functions
*/
#define BLOCK8x8_F64(ptr, stride, row, column) \
(*((double *)((unsigned char *)ptr + stride*row) + column))
#define BLOCK8x8_PTR_F64(ptr, stride, row, column) \
((double *)((unsigned char *)ptr + stride*row) + column)
#define BLOCK8x8_S16(ptr, stride, row, column) \
(*((int16_t *)((unsigned char *)ptr + stride*row) + column))
static void
idct8x8_test (OilTest *test)
{
int16_t *data = oil_test_get_source_data (test, OIL_ARG_SRC1);
int stride = oil_test_get_value (test, OIL_ARG_SSTR1);
int i, j;
for(j=0;j<8;j++){
for(i=0;i<8;i++){
OIL_GET(data, i*2 + j*stride, int16_t) = (oil_rand_s16() & 0xfff) - 2048;
}
}
}
/**
* oil_idct8x8_f64:
* @d_8x8:
* @dstr:
* @s_8x8:
* @sstr:
*
* Performs a 2-D Inverse Discrete Cosine Transform on @s_8x8 and places
* the result in @d_8x8.
*/
OIL_DEFINE_CLASS (idct8x8_f64, "double *d_8x8, int dstr, double *s_8x8, int sstr");
/**
* oil_idct8x8lim10_f64:
* @d_8x8:
* @dstr:
* @s_8x8:
* @sstr:
*
* Performs a 2-D Inverse Discrete Cosine Transform on @s_8x8 and places
* the result in @d_8x8.
*/
OIL_DEFINE_CLASS (idct8x8lim10_f64, "double *d_8x8, int dstr, double *s_8x8, int sstr");
/**
* oil_idct8x8_s16:
* @d_8x8:
* @dstr:
* @s_8x8:
* @sstr:
*
* Performs a limited 2-D Inverse Discrete Cosine Transform on @s_8x8
* and places the result in @d_8x8.
*/
OIL_DEFINE_CLASS_FULL (idct8x8_s16, "int16_t *d_8x8, int dstr, int16_t *s_8x8, int sstr", idct8x8_test);
/**
* oil_idct8x8lim10_s16:
* @d_8x8:
* @dstr:
* @s_8x8:
* @sstr:
*
* Performs a limited 2-D Inverse Discrete Cosine Transform on @s_8x8
* and places the result in @d_8x8. The source 8x8 block must be non-zero
* only in the 10 lowest-order components.
*/
OIL_DEFINE_CLASS (idct8x8lim10_s16, "int16_t *d_8x8, int dstr, int16_t *s_8x8, int sstr");
static void
idct8x8_f64_ref (double *dest, int dstr, const double *src, int sstr)
{
static double idct_coeff[8][8];
static int idct_coeff_init = 0;
int i,j,k,l;
double tmp1,tmp2;
if(!idct_coeff_init){
double scale;
for(i=0;i<8;i++){
scale = (i==0) ? sqrt(0.125) : 0.5;
for(j=0;j<8;j++){
idct_coeff[j][i] = scale *
cos((M_PI/8)*i*(j+0.5));
}
}
idct_coeff_init = 1;
}
for(i=0;i<8;i++){
for(j=0;j<8;j++){
tmp1 = 0;
for(k=0;k<8;k++){
tmp2 = 0;
for(l=0;l<8;l++){
tmp2 += idct_coeff[j][l] *
BLOCK8x8_F64(src,sstr,k,l);
}
tmp1 += idct_coeff[i][k] * tmp2;
}
BLOCK8x8_F64(dest,dstr,i,j) = tmp1;
}
}
}
OIL_DEFINE_IMPL_REF (idct8x8_f64_ref, idct8x8_f64);
static void
idct8x8lim10_f64_ref (double *dest, int dstr, const double *src, int sstr)
{
static double idct_coeff[8][8];
static int idct_coeff_init = 0;
int i,j,k,l;
double tmp1,tmp2;
if(!idct_coeff_init){
double scale;
for(i=0;i<8;i++){
scale = (i==0) ? sqrt(0.125) : 0.5;
for(j=0;j<8;j++){
idct_coeff[j][i] = scale *
cos((M_PI/8)*i*(j+0.5));
}
}
idct_coeff_init = 1;
}
for(i=0;i<8;i++){
for(j=0;j<8;j++){
tmp1 = 0;
for(k=0;k<4;k++){
tmp2 = 0;
for(l=0;l<4;l++){
tmp2 += idct_coeff[j][l] *
BLOCK8x8_F64(src,sstr,k,l);
}
tmp1 += idct_coeff[i][k] * tmp2;
}
BLOCK8x8_F64(dest,dstr,i,j) = tmp1;
}
}
}
OIL_DEFINE_IMPL_REF (idct8x8lim10_f64_ref, idct8x8lim10_f64);
#if defined(oil_idct8_f64)
static void
idct8x8_f64_c (double *dest, int dstr, const double *src, int sstr)
{
int i;
double tmp[64];
int tmpstr = 8*sizeof(double);
for(i=0;i<8;i++){
oil_idct8_f64(
BLOCK8x8_PTR_F64(tmp,tmpstr,i,0), sizeof(double),
BLOCK8x8_PTR_F64(src,sstr,i,0), sizeof(double));
}
for(i=0;i<8;i++){
oil_idct8_f64(
BLOCK8x8_PTR_F64(dest,dstr,0,i), dstr,
BLOCK8x8_PTR_F64(tmp,tmpstr,0,i), tmpstr);
}
}
OIL_DEFINE_IMPL_DEPENDS (idct8x8_f64_c, idct8x8_f64, idct8_f64);
#endif
#if defined(oil_conv8x8_f64_s16) && defined(oil_idct8x8_f64) && \
defined(oil_conv8x8_s16_f64)
static void
idct8x8_s16_ref (int16_t *dest, int dstr, const int16_t *src, int sstr)
{
double s[64], d[64];
oil_conv8x8_f64_s16 (s,8*sizeof(double),src,sstr);
oil_idct8x8_f64 (d,8*sizeof(double),s,8*sizeof(double));
oil_conv8x8_s16_f64 (dest,dstr,d,8*sizeof(double));
}
OIL_DEFINE_IMPL_REF (idct8x8_s16_ref, idct8x8_s16);
#if 0
OIL_DEFINE_IMPL_DEPENDS (idct8x8_s16_ref, idct8x8_s16,
conv8x8_f64_s16, idct8x8_f64, conv8x8_s16_f64);
#endif
#endif
#if defined(oil_conv8x8_f64_s16) && defined(oil_idct8x8lim10_f64) && \
defined(oil_conv8x8_s16_f64)
static void
idct8x8lim10_s16_ref (int16_t *dest, int dstr, const int16_t *src, int sstr)
{
double s[64], d[64];
oil_conv8x8_f64_s16 (s,8*sizeof(double),src,sstr);
oil_idct8x8lim10_f64 (d,8*sizeof(double),s,8*sizeof(double));
oil_conv8x8_s16_f64 (dest,dstr,d,8*sizeof(double));
}
OIL_DEFINE_IMPL_REF (idct8x8lim10_s16_ref, idct8x8lim10_s16);
#if 0
OIL_DEFINE_IMPL_DEPENDS (idct8x8_s16_ref, idct8x8_s16,
conv8x8_f64_s16, idct8x8_f64, conv8x8_s16_f64);
#endif
#endif
#ifdef __SYMBIAN32__
OilFunctionClass* __oil_function_class_idct8x8_f64() {
return &_oil_function_class_idct8x8_f64;
}
#endif
#ifdef __SYMBIAN32__
OilFunctionClass* __oil_function_class_idct8x8lim10_f64() {
return &_oil_function_class_idct8x8lim10_f64;
}
#endif
#ifdef __SYMBIAN32__
OilFunctionClass* __oil_function_class_idct8x8_s16() {
return &_oil_function_class_idct8x8_s16;
}
#endif
#ifdef __SYMBIAN32__
OilFunctionClass* __oil_function_class_idct8x8lim10_s16() {
return &_oil_function_class_idct8x8lim10_s16;
}
#endif
#ifdef __SYMBIAN32__
OilFunctionImpl* __oil_function_impl_idct8x8_f64_ref() {
return &_oil_function_impl_idct8x8_f64_ref;
}
#endif
#ifdef __SYMBIAN32__
OilFunctionImpl* __oil_function_impl_idct8x8lim10_f64_ref() {
return &_oil_function_impl_idct8x8lim10_f64_ref;
}
#endif
#ifdef __SYMBIAN32__
OilFunctionImpl* __oil_function_impl_idct8x8_s16_ref() {
return &_oil_function_impl_idct8x8_s16_ref;
}
#endif
#ifdef __SYMBIAN32__
OilFunctionImpl* __oil_function_impl_idct8x8lim10_s16_ref() {
return &_oil_function_impl_idct8x8lim10_s16_ref;
}
#endif
#ifdef __SYMBIAN32__
OilFunctionImpl* __oil_function_impl_idct8x8_f64_c() {
return &_oil_function_impl_idct8x8_f64_c;
}
#endif
#ifdef __SYMBIAN32__
EXPORT_C void** _oil_function_class_ptr_idct8x8_f64 () {
oil_function_class_ptr_idct8x8_f64 = __oil_function_class_idct8x8_f64();
return &oil_function_class_ptr_idct8x8_f64->func;
}
#endif
#ifdef __SYMBIAN32__
EXPORT_C void** _oil_function_class_ptr_idct8x8lim10_f64 () {
oil_function_class_ptr_idct8x8lim10_f64 = __oil_function_class_idct8x8lim10_f64();
return &oil_function_class_ptr_idct8x8lim10_f64->func;
}
#endif
#ifdef __SYMBIAN32__
EXPORT_C void** _oil_function_class_ptr_idct8x8_s16 () {
oil_function_class_ptr_idct8x8_s16 = __oil_function_class_idct8x8_s16();
return &oil_function_class_ptr_idct8x8_s16->func;
}
#endif
#ifdef __SYMBIAN32__
EXPORT_C void** _oil_function_class_ptr_idct8x8lim10_s16 () {
oil_function_class_ptr_idct8x8lim10_s16 = __oil_function_class_idct8x8lim10_s16();
return &oil_function_class_ptr_idct8x8lim10_s16->func;
}
#endif