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pca: get rid of VLA

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-10-06 14:03:15 +02:00
parent 56d7f7d955
commit 24702a91e4
1 changed files with 4 additions and 1 deletions
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5
libavutil/pca.c
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@ -32,6 +32,7 @@ typedef struct PCA{
int n; int n;
double *covariance; double *covariance;
double *mean; double *mean;
double *z;
}PCA; }PCA;
PCA *ff_pca_init(int n){ PCA *ff_pca_init(int n){
@ -41,6 +42,7 @@ PCA *ff_pca_init(int n){
pca= av_mallocz(sizeof(PCA)); pca= av_mallocz(sizeof(PCA));
pca->n= n; pca->n= n;
pca->z = av_malloc(sizeof(*pca->z) * n);
pca->count=0; pca->count=0;
pca->covariance= av_mallocz(sizeof(double)*n*n); pca->covariance= av_mallocz(sizeof(double)*n*n);
pca->mean= av_mallocz(sizeof(double)*n); pca->mean= av_mallocz(sizeof(double)*n);
@ -51,6 +53,7 @@ PCA *ff_pca_init(int n){
void ff_pca_free(PCA *pca){ void ff_pca_free(PCA *pca){
av_freep(&pca->covariance); av_freep(&pca->covariance);
av_freep(&pca->mean); av_freep(&pca->mean);
av_freep(&pca->z);
av_free(pca); av_free(pca);
} }
@ -70,7 +73,7 @@ int ff_pca(PCA *pca, double *eigenvector, double *eigenvalue){
int i, j, pass; int i, j, pass;
int k=0; int k=0;
const int n= pca->n; const int n= pca->n;
double z[n]; double *z = pca->z;
memset(eigenvector, 0, sizeof(double)*n*n); memset(eigenvector, 0, sizeof(double)*n*n);