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Document ExoMediaDrm listener methods as optional

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Also document FrameworkMediaDrm overrides as dependent on API level.

These two methods call through to equivalent methods on MediaDrm that
were added in 23:
https://developer.android.com/reference/android/media/MediaDrm#setOnExpirationUpdateListener(java.util.concurrent.Executor,%20android.media.MediaDrm.OnExpirationUpdateListener)

PiperOrigin-RevId: 303102370
This commit is contained in:
ibaker 2020-03-26 13:58:04 +00:00 committed by Oliver Woodman
parent b314da5f02
commit 47d5dd911c
2 changed files with 44 additions and 3 deletions
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33
library/core/src/main/java/com/google/android/exoplayer2/drm/ExoMediaDrm.java
View File

@ -224,13 +224,40 @@ public interface ExoMediaDrm {
}
/** @see MediaDrm#setOnEventListener(MediaDrm.OnEventListener) */
/**
* Sets the listener for DRM events.
*
* <p>This is an optional method, and some implementations may only support it on certain Android
* API levels.
*
* @param listener The listener to receive events, or {@code null} to stop receiving events.
* @throws UnsupportedOperationException if the implementation doesn't support this method.
* @see MediaDrm#setOnEventListener(MediaDrm.OnEventListener)
*/
void setOnEventListener(@Nullable OnEventListener listener);
/** @see MediaDrm#setOnKeyStatusChangeListener(MediaDrm.OnKeyStatusChangeListener, Handler) */
/**
* Sets the listener for key status change events.
*
* <p>This is an optional method, and some implementations may only support it on certain Android
* API levels.
*
* @param listener The listener to receive events, or {@code null} to stop receiving events.
* @throws UnsupportedOperationException if the implementation doesn't support this method.
* @see MediaDrm#setOnKeyStatusChangeListener(MediaDrm.OnKeyStatusChangeListener, Handler)
*/
void setOnKeyStatusChangeListener(@Nullable OnKeyStatusChangeListener listener);
/** @see MediaDrm#setOnExpirationUpdateListener(MediaDrm.OnExpirationUpdateListener, Handler) */
/**
* Sets the listener for session expiration events.
*
* <p>This is an optional method, and some implementations may only support it on certain Android
* API levels.
*
* @param listener The listener to receive events, or {@code null} to stop receiving events.
* @throws UnsupportedOperationException if the implementation doesn't support this method.
* @see MediaDrm#setOnExpirationUpdateListener(MediaDrm.OnExpirationUpdateListener, Handler)
*/
void setOnExpirationUpdateListener(@Nullable OnExpirationUpdateListener listener);
/** @see MediaDrm#openSession() */

14
library/core/src/main/java/com/google/android/exoplayer2/drm/FrameworkMediaDrm.java
View File

@ -114,7 +114,14 @@ public final class FrameworkMediaDrm implements ExoMediaDrm {
listener.onEvent(FrameworkMediaDrm.this, sessionId, event, extra, data));
}
/**
* {@inheritDoc}
*
* @param listener The listener to receive events, or {@code null} to stop receiving events.
* @throws UnsupportedOperationException on API levels lower than 23.
*/
@Override
@RequiresApi(23)
public void setOnKeyStatusChangeListener(
@Nullable ExoMediaDrm.OnKeyStatusChangeListener listener) {
if (Util.SDK_INT < 23) {
@ -135,7 +142,14 @@ public final class FrameworkMediaDrm implements ExoMediaDrm {
/* handler= */ null);
}
/**
* {@inheritDoc}
*
* @param listener The listener to receive events, or {@code null} to stop receiving events.
* @throws UnsupportedOperationException on API levels lower than 23.
*/
@Override
@RequiresApi(23)
public void setOnExpirationUpdateListener(@Nullable OnExpirationUpdateListener listener) {
if (Util.SDK_INT < 23) {
throw new UnsupportedOperationException();