Fix inconsistency with spec in H.265 SPS nal units parsing

Issue: google/ExoPlayer#9719

#minor-release

PiperOrigin-RevId: 412424558

RELEASENOTES.md

@@ -5,6 +5,9 @@
 *   Core library:
     *   Support preferred video role flags in track selection
         ((#9402)[https://github.com/google/ExoPlayer/issues/9402]).
+*   Extractors:
+    *   Fix inconsistency with spec in H.265 SPS nal units parsing
+        ((#9719)[https://github.com/google/ExoPlayer/issues/9719]).
 *   DRM:
     *   Remove `playbackLooper` from `DrmSessionManager.(pre)acquireSession`.
         When a `DrmSessionManager` is used by an app in a custom `MediaSource`,

library/extractor/src/main/java/com/google/android/exoplayer2/util/NalUnitUtil.java

@@ -779,7 +779,7 @@ public final class NalUnitUtil {
         bitArray.skipBit(); // delta_rps_sign
         bitArray.readUnsignedExpGolombCodedInt(); // abs_delta_rps_minus1
         for (int j = 0; j <= previousNumDeltaPocs; j++) {
-          if (bitArray.readBit()) { // used_by_curr_pic_flag[j]
+          if (!bitArray.readBit()) { // used_by_curr_pic_flag[j]
             bitArray.skipBit(); // use_delta_flag[j]
           }
         }