#include <math.h>
#include <string.h>
+#include "attributes.h"
+#include "internal.h"
#include "version.h"
#include "lls.h"
-void avpriv_init_lls(LLSModel *m, int indep_count)
-{
- memset(m, 0, sizeof(LLSModel));
- m->indep_count = indep_count;
-}
-
-void avpriv_update_lls(LLSModel *m, double *var, double decay)
+static void update_lls(LLSModel *m, double *var)
{
int i, j;
for (i = 0; i <= m->indep_count; i++) {
for (j = i; j <= m->indep_count; j++) {
- m->covariance[i][j] *= decay;
m->covariance[i][j] += var[i] * var[j];
}
}
void avpriv_solve_lls(LLSModel *m, double threshold, unsigned short min_order)
{
int i, j, k;
- double (*factor)[MAX_VARS + 1] = (void *) &m->covariance[1][0];
- double (*covar) [MAX_VARS + 1] = (void *) &m->covariance[1][1];
+ double (*factor)[MAX_VARS_ALIGN] = (void *) &m->covariance[1][0];
+ double (*covar) [MAX_VARS_ALIGN] = (void *) &m->covariance[1][1];
double *covar_y = m->covariance[0];
int count = m->indep_count;
}
}
-double avpriv_evaluate_lls(LLSModel *m, double *param, int order)
+static double evaluate_lls(LLSModel *m, double *param, int order)
{
int i;
double out = 0;
return out;
}
-#if FF_API_LLS_PRIVATE
-void av_init_lls(LLSModel *m, int indep_count)
-{
- avpriv_init_lls(m, indep_count);
-}
-void av_update_lls(LLSModel *m, double *param, double decay)
-{
- avpriv_update_lls(m, param, decay);
-}
-void av_solve_lls(LLSModel *m, double threshold, int min_order)
-{
- avpriv_solve_lls(m, threshold, min_order);
-}
-double av_evaluate_lls(LLSModel *m, double *param, int order)
+av_cold void avpriv_init_lls(LLSModel *m, int indep_count)
{
- return avpriv_evaluate_lls(m, param, order);
-}
-#endif /* FF_API_LLS_PRIVATE */
-
-#ifdef TEST
-
-#include <stdio.h>
-#include <limits.h>
-#include "lfg.h"
-
-int main(void)
-{
- LLSModel m;
- int i, order;
- AVLFG lfg;
-
- av_lfg_init(&lfg, 1);
- avpriv_init_lls(&m, 3);
-
- for (i = 0; i < 100; i++) {
- double var[4];
- double eval;
-
- var[0] = (av_lfg_get(&lfg) / (double) UINT_MAX - 0.5) * 2;
- var[1] = var[0] + av_lfg_get(&lfg) / (double) UINT_MAX - 0.5;
- var[2] = var[1] + av_lfg_get(&lfg) / (double) UINT_MAX - 0.5;
- var[3] = var[2] + av_lfg_get(&lfg) / (double) UINT_MAX - 0.5;
- avpriv_update_lls(&m, var, 0.99);
- avpriv_solve_lls(&m, 0.001, 0);
- for (order = 0; order < 3; order++) {
- eval = avpriv_evaluate_lls(&m, var + 1, order);
- printf("real:%9f order:%d pred:%9f var:%f coeffs:%f %9f %9f\n",
- var[0], order, eval, sqrt(m.variance[order] / (i + 1)),
- m.coeff[order][0], m.coeff[order][1],
- m.coeff[order][2]);
- }
- }
- return 0;
+ memset(m, 0, sizeof(LLSModel));
+ m->indep_count = indep_count;
+ m->update_lls = update_lls;
+ m->evaluate_lls = evaluate_lls;
+ if (ARCH_X86)
+ ff_init_lls_x86(m);
}
-
-#endif