1 files changed, 26 insertions, 0 deletions
diff --git a/android/camera/camera-common.h b/android/camera/camera-common.h
index 126b3ed..37bdef4 100755
--- a/android/camera/camera-common.h
+++ b/android/camera/camera-common.h
@@ -176,5 +176,31 @@ typedef struct CameraDevice {
     /* Opaque pointer used by the camera capturing API. */
     void*       opaque;
 } CameraDevice;
+
+/* Returns current time in microseconds. */
+static __inline__ uint64_t
+_get_timestamp(void)
+{
+    struct timeval t;
+    t.tv_sec = t.tv_usec = 0;
+    gettimeofday(&t, NULL);
+    return (uint64_t)t.tv_sec * 1000000LL + t.tv_usec;
+}
+
+/* Sleeps for the given amount of milliseconds */
+static __inline__ void
+_sleep(int millisec)
+{
+    struct timeval t;
+    const uint64_t wake_at = _get_timestamp() + (uint64_t)millisec * 1000;
+    do {
+        const uint64_t stamp = _get_timestamp();
+        if ((stamp / 1000) >= (wake_at / 1000)) {
+            break;
+        }
+        t.tv_sec = (wake_at - stamp) / 1000000;
+        t.tv_usec = (wake_at - stamp) - (uint64_t)t.tv_sec * 1000000;
+    } while (select(0, NULL, NULL, NULL, &t) < 0 && errno == EINTR);
+}
 
 #endif  /* ANDROID_CAMERA_CAMERA_COMMON_H_ */