sws/pixfmt/pixdesc: add support for yuva444p

[ffmpeg] / libavutil / lfg.c

diff --git a/libavutil/lfg.c b/libavutil/lfg.c
index b5db5a4b17cb0a4f091be007c5ed74db78038d1c..fb0b258ad4f1d23863d9a15c5aa619fe7524ec85 100644 (file)
--- a/libavutil/lfg.c
+++ b/libavutil/lfg.c
@@ -27,19 +27,21 @@
 #include "intreadwrite.h"
 #include "attributes.h"
 
-void av_cold av_lfg_init(AVLFG *c, unsigned int seed){
-    uint8_t tmp[16]={0};
+void av_cold av_lfg_init(AVLFG *c, unsigned int seed)
+{
+    uint8_t tmp[16] = { 0 };
     int i;
 
-    for(i=8; i<64; i+=4){
-        AV_WL32(tmp, seed); tmp[4]=i;
-        av_md5_sum(tmp, tmp,  16);
-        c->state[i  ]= AV_RL32(tmp);
-        c->state[i+1]= AV_RL32(tmp+4);
-        c->state[i+2]= AV_RL32(tmp+8);
-        c->state[i+3]= AV_RL32(tmp+12);
+    for (i = 8; i < 64; i += 4) {
+        AV_WL32(tmp, seed);
+        tmp[4] = i;
+        av_md5_sum(tmp, tmp, 16);
+        c->state[i    ] = AV_RL32(tmp);
+        c->state[i + 1] = AV_RL32(tmp + 4);
+        c->state[i + 2] = AV_RL32(tmp + 8);
+        c->state[i + 3] = AV_RL32(tmp + 12);
     }
-    c->index=0;
+    c->index = 0;
 }
 
 void av_bmg_get(AVLFG *lfg, double out[2])
@@ -47,9 +49,9 @@ void av_bmg_get(AVLFG *lfg, double out[2])
     double x1, x2, w;
 
     do {
-        x1 = 2.0/UINT_MAX*av_lfg_get(lfg) - 1.0;
-        x2 = 2.0/UINT_MAX*av_lfg_get(lfg) - 1.0;
-        w = x1*x1 + x2*x2;
+        x1 = 2.0 / UINT_MAX * av_lfg_get(lfg) - 1.0;
+        x2 = 2.0 / UINT_MAX * av_lfg_get(lfg) - 1.0;
+        w  = x1 * x1 + x2 * x2;
     } while (w >= 1.0);
 
     w = sqrt((-2.0 * log(w)) / w);
@@ -63,7 +65,7 @@ void av_bmg_get(AVLFG *lfg, double out[2])
 
 int main(void)
 {
-    int x=0;
+    int x = 0;
     int i, j;
     AVLFG state;
 
@@ -71,8 +73,8 @@ int main(void)
     for (j = 0; j < 10000; j++) {
         START_TIMER
         for (i = 0; i < 624; i++) {
-//            av_log(NULL,AV_LOG_ERROR, "%X\n", av_lfg_get(&state));
-            x+=av_lfg_get(&state);
+            //av_log(NULL, AV_LOG_ERROR, "%X\n", av_lfg_get(&state));
+            x += av_lfg_get(&state);
         }
         STOP_TIMER("624 calls of av_lfg_get");
     }