Replace random() usage in test programs by av_lfg_*().

Originally committed as revision 18070 to svn://svn.ffmpeg.org/ffmpeg/trunk

3 files changed, 20 insertions, 11 deletions

diff --git a/libavutil/aes.c b/libavutil/aes.c
index 26bc43fc5d..49c23e1d46 100644
--- a/libavutil/aes.c
+++ b/libavutil/aes.c
@@ -192,10 +192,9 @@ int av_aes_init(AVAES *a, const uint8_t *key, int key_bits, int decrypt) {
 }
 
 #ifdef TEST
+#include "lfg.h"
 #include "log.h"
 
-#undef random
-
 int main(void){
     int i,j;
     AVAES ae, ad, b;
@@ -209,10 +208,12 @@ int main(void){
         {0x73, 0x22, 0x81, 0xc0, 0xa0, 0xaa, 0xb8, 0xf7, 0xa5, 0x4a, 0x0c, 0x67, 0xa0, 0xc4, 0x5e, 0xcf},
         {0x6d, 0x25, 0x1e, 0x69, 0x44, 0xb0, 0x51, 0xe0, 0x4e, 0xaa, 0x6f, 0xb4, 0xdb, 0xf7, 0x84, 0x65}};
     uint8_t temp[16];
+    AVLFG prn;
 
     av_aes_init(&ae, "PI=3.141592654..", 128, 0);
     av_aes_init(&ad, "PI=3.141592654..", 128, 1);
     av_log_set_level(AV_LOG_DEBUG);
+    av_lfg_init(&prn, 1);
 
     for(i=0; i<2; i++){
         av_aes_init(&b, rkey[i], 128, 1);
@@ -224,7 +225,7 @@ int main(void){
 
     for(i=0; i<10000; i++){
         for(j=0; j<16; j++){
-            pt[j]= random();
+            pt[j] = av_lfg_get(&prn);
         }
 {START_TIMER
         av_aes_crypt(&ae, temp, pt, 1, NULL, 0);
diff --git a/libavutil/pca.c b/libavutil/pca.c
index f803d3b677..09c542bf93 100644
--- a/libavutil/pca.c
+++ b/libavutil/pca.c
@@ -164,9 +164,9 @@ int ff_pca(PCA *pca, double *eigenvector, double *eigenvalue){
 #ifdef TEST
 
 #undef printf
-#undef random
 #include <stdio.h>
 #include <stdlib.h>
+#include "lfg.h"
 
 int main(void){
     PCA *pca;
@@ -174,15 +174,18 @@ int main(void){
 #define LEN 8
     double eigenvector[LEN*LEN];
     double eigenvalue[LEN];
+    AVLFG prn;
+
+    av_lfg_init(&prn, 1);
 
     pca= ff_pca_init(LEN);
 
     for(i=0; i<9000000; i++){
         double v[2*LEN+100];
         double sum=0;
-        int pos= random()%LEN;
-        int v2= (random()%101) - 50;
-        v[0]= (random()%101) - 50;
+        int pos = av_lfg_get(&prn) % LEN;
+        int v2  = av_lfg_get(&prn) % 101 - 50;
+        v[0]    = av_lfg_get(&prn) % 101 - 50;
         for(j=1; j<8; j++){
             if(j<=pos) v[j]= v[0];
             else       v[j]= v2;
@@ -191,7 +194,7 @@ int main(void){
 /*        for(j=0; j<LEN; j++){
             v[j] -= v[pos];
         }*/
-//        sum += random()%10;
+//        sum += av_lfg_get(&prn) % 10;
 /*        for(j=0; j<LEN; j++){
             v[j] -= sum/LEN;
         }*/
diff --git a/libavutil/tree.c b/libavutil/tree.c
index c9a19fa37d..62437ffd5b 100644
--- a/libavutil/tree.c
+++ b/libavutil/tree.c
@@ -144,7 +144,9 @@ void av_tree_enumerate(AVTreeNode *t, void *opaque, int (*f)(void *opaque, void
 #endif
 
 #ifdef TEST
-#undef random
+
+#include "lfg.h"
+
 static int check(AVTreeNode *t){
     if(t){
         int left= check(t->child[0]);
@@ -179,9 +181,12 @@ int cmp(const void *a, const void *b){
 int main(void){
     int i,k;
     AVTreeNode *root= NULL, *node=NULL;
+    AVLFG prn;
+
+    av_lfg_init(&prn, 1);
 
     for(i=0; i<10000; i++){
-        int j= (random()%86294);
+        int j = av_lfg_get(&prn) % 86294;
         if(check(root) > 999){
             av_log(NULL, AV_LOG_ERROR, "FATAL error %d\n", i);
         print(root, 0);
@@ -192,7 +197,7 @@ int main(void){
             node= av_mallocz(av_tree_node_size);
         av_tree_insert(&root, (void*)(j+1), cmp, &node);
 
-        j= (random()%86294);
+        j = av_lfg_get(&prn) % 86294;
         {
             AVTreeNode *node2=NULL;
             av_log(NULL, AV_LOG_ERROR, "removing %4d\n", j);