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Smoother PlaybackControlView updates when speed != 1

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* If speed <= 0.1, update every second.
* If 0.1 < speed < 1, update approximately once per
  second in real time, aligned so that each second boundary
  in media time has a corresponding updatae.
* If speed == 1, keep existing behavior.
* If 1 < speed <= 5, update every second in media time
* If speed > 5, update every 200ms.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=170559037
This commit is contained in:
olly 2017-09-29 18:35:39 -07:00 committed by Oliver Woodman
parent 096d7651d2
commit fd576d2189
1 changed files with 13 additions and 3 deletions
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16
library/ui/src/main/java/com/google/android/exoplayer2/ui/PlaybackControlView.java
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@ -825,9 +825,19 @@ public class PlaybackControlView extends FrameLayout {
if (playbackState != Player.STATE_IDLE && playbackState != Player.STATE_ENDED) {
long delayMs;
if (player.getPlayWhenReady() && playbackState == Player.STATE_READY) {
delayMs = 1000 - (position % 1000);
if (delayMs < 200) {
delayMs += 1000;
float playbackSpeed = player.getPlaybackParameters().speed;
if (playbackSpeed <= 0.1f) {
delayMs = 1000;
} else if (playbackSpeed <= 5f) {
long mediaTimeUpdatePeriodMs = 1000 / Math.max(1, Math.round(1 / playbackSpeed));
long mediaTimeDelayMs = mediaTimeUpdatePeriodMs - (position % mediaTimeUpdatePeriodMs);
if (mediaTimeDelayMs < (mediaTimeUpdatePeriodMs / 5)) {
mediaTimeDelayMs += mediaTimeUpdatePeriodMs;
}
delayMs = playbackSpeed == 1 ? mediaTimeDelayMs
: (long) (mediaTimeDelayMs / playbackSpeed);
} else {
delayMs = 200;
}
} else {
delayMs = 1000;