Correct animation speed if it was reversed due to repeatMode REVERSE

Fixes airbnb#705

lottie/src/main/java/com/airbnb/lottie/utils/LottieValueAnimator.java

@@ -16,6 +16,7 @@ public class LottieValueAnimator extends BaseLottieAnimator implements Choreogra
 
 
  private float speed = 1f;
+ private boolean speedReversedForRepeatMode = false;
  private long lastFrameTimeNs = 0;
  private float frame = 0;
  private int repeatCount = 0;
@@ -101,6 +102,7 @@ public float getFrame() {
  notifyRepeat();
  repeatCount++;
  if (getRepeatMode() == REVERSE) {
+ speedReversedForRepeatMode = !speedReversedForRepeatMode;
  reverseAnimationSpeed();
  } else {
  frame = isReversed() ? getMaxFrame() : getMinFrame();
@@ -163,10 +165,21 @@ public void setSpeed(float speed) {
  this.speed = speed;
  }
 
+ /**
+ * Returns the current speed. This will be affected by repeat mode REVERSE.
+ */
  public float getSpeed() {
  return speed;
  }
 
+ @Override public void setRepeatMode(int value) {
+ super.setRepeatMode(value);
+ if (value != REVERSE && speedReversedForRepeatMode) {
+ speedReversedForRepeatMode = false;
+ reverseAnimationSpeed();
+ }
+ }
+
  public void playAnimation() {
  notifyStart(isReversed());
  setFrame((int) (isReversed() ? getMaxFrame() : getMinFrame()));
@@ -200,7 +213,7 @@ public void resumeAnimation() {
  }
 
  private boolean isReversed() {
- return speed < 0;
+ return getSpeed() < 0;
  }
 
  public float getMinFrame() {