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Fix handling of timestamps before play()

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If the AudioTimestamp was sampled before play() was called, it was incorrectly
returned to the caller for sanity-checking. Fix this behavior by dropping the
timestamp internally in the AudioTimestampPoller.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=190584412
This commit is contained in:
andrewlewis 2018-03-27 01:18:05 -07:00 committed by Oliver Woodman
parent eb34a2a102
commit 6cb07adcee
1 changed files with 9 additions and 5 deletions
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14
library/core/src/main/java/com/google/android/exoplayer2/audio/AudioTimestampPoller.java
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@ -121,11 +121,15 @@ import java.lang.annotation.RetentionPolicy;
boolean updatedTimestamp = audioTimestamp.maybeUpdateTimestamp();
switch (state) {
case STATE_INITIALIZING:
if (updatedTimestamp
&& audioTimestamp.getTimestampSystemTimeUs() >= initializeSystemTimeUs) {
// We have an initial timestamp, but don't know if it's advancing yet.
initialTimestampPositionFrames = audioTimestamp.getTimestampPositionFrames();
updateState(STATE_TIMESTAMP);
if (updatedTimestamp) {
if (audioTimestamp.getTimestampSystemTimeUs() >= initializeSystemTimeUs) {
// We have an initial timestamp, but don't know if it's advancing yet.
initialTimestampPositionFrames = audioTimestamp.getTimestampPositionFrames();
updateState(STATE_TIMESTAMP);
} else {
// Drop the timestamp, as it was sampled before the last reset.
updatedTimestamp = false;
}
} else if (systemTimeUs - initializeSystemTimeUs > INITIALIZING_DURATION_US) {
// We haven't received a timestamp for a while, so they probably aren't available for the
// current audio route. Poll infrequently in case the route changes later.