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Rewrite ClearKey UUID to Common PSSH UUID in PSSH box on API < 27

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Without this change, content that contains a PSSH box with only
the ClearKey UUID is not playable on devices with API < 27.

This includes our `sample_fragmented_clearkey.mp4` test content.

PiperOrigin-RevId: 731308444
This commit is contained in:
ibaker 2025-02-26 07:23:23 -08:00 committed by Copybara-Service
parent 5417279982
commit 275e7d3dbd
1 changed files with 14 additions and 2 deletions
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16
libraries/exoplayer/src/main/java/androidx/media3/exoplayer/drm/FrameworkMediaDrm.java
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@ -42,6 +42,7 @@ import androidx.media3.common.util.UnstableApi;
import androidx.media3.common.util.Util;
import androidx.media3.exoplayer.analytics.PlayerId;
import androidx.media3.extractor.mp4.PsshAtomUtil;
import androidx.media3.extractor.mp4.PsshAtomUtil.PsshAtom;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.charset.StandardCharsets;
@ -477,8 +478,7 @@ public final class FrameworkMediaDrm implements ExoMediaDrm {
}
private static UUID adjustUuid(UUID uuid) {
// ClearKey had to be accessed using the Common PSSH UUID prior to API level 27.
return Util.SDK_INT < 27 && C.CLEARKEY_UUID.equals(uuid) ? C.COMMON_PSSH_UUID : uuid;
return cdmRequiresCommonPsshUuid(uuid) ? C.COMMON_PSSH_UUID : uuid;
}
private static byte[] adjustRequestInitData(UUID uuid, byte[] initData) {
@ -493,6 +493,13 @@ public final class FrameworkMediaDrm implements ExoMediaDrm {
PsshAtomUtil.buildPsshAtom(
C.PLAYREADY_UUID, addLaUrlAttributeIfMissing(schemeSpecificData));
}
if (cdmRequiresCommonPsshUuid(uuid)) {
PsshAtom psshAtom = PsshAtomUtil.parsePsshAtom(initData);
if (psshAtom != null) {
initData =
PsshAtomUtil.buildPsshAtom(C.COMMON_PSSH_UUID, psshAtom.keyIds, psshAtom.schemeData);
}
}
// Prior to API level 21, the Widevine CDM required scheme specific data to be extracted from
// the PSSH atom. We also extract the data on API levels 21 and 22 because these API levels
@ -534,6 +541,11 @@ public final class FrameworkMediaDrm implements ExoMediaDrm {
return requestData;
}
private static boolean cdmRequiresCommonPsshUuid(UUID uuid) {
// ClearKey had to be accessed using the Common PSSH UUID prior to API level 27.
return Util.SDK_INT < 27 && Objects.equals(uuid, C.CLEARKEY_UUID);
}
private static void forceWidevineL3(MediaDrm mediaDrm) {
mediaDrm.setPropertyString("securityLevel", "L3");
}