Fix E-AC3 format propagation

Issue: Issue: #7611
PiperOrigin-RevId: 324884412

library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java

@@ -631,6 +631,13 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
       throws ExoPlaybackException {
     boolean outputFormatChanged = false;
     @Nullable Format format = formatQueue.pollFloor(presentationTimeUs);
+    if (format == null && codecOutputMediaFormatChanged) {
+      // If the codec's output MediaFormat has changed then there should be a corresponding Format
+      // change, which we've not found. Check the Format queue in case the corresponding
+      // presentation timestamp is greater than presentationTimeUs, which can happen for some codecs
+      // [Internal ref: b/162719047].
+      format = formatQueue.pollFirst();
+    }
     if (format != null) {
       outputFormat = format;
       outputFormatChanged = true;

library/core/src/main/java/com/google/android/exoplayer2/util/TimedValueQueue.java

@@ -62,6 +62,12 @@ public final class TimedValueQueue<V> {
     return size;
   }
 
+  /** Removes and returns the first value in the queue, or null if the queue is empty. */
+  @Nullable
+  public synchronized V pollFirst() {
+    return size == 0 ? null : popFirst();
+  }
+
   /**
    * Returns the value with the greatest timestamp which is less than or equal to the given
    * timestamp. Removes all older values and the returned one from the buffer.
@@ -71,7 +77,8 @@ public final class TimedValueQueue<V> {
    *     timestamp or null if there is no such value.
    * @see #poll(long)
    */
-  public synchronized @Nullable V pollFloor(long timestamp) {
+  @Nullable
+  public synchronized V pollFloor(long timestamp) {
     return poll(timestamp, /* onlyOlder= */ true);
   }
 
@@ -83,7 +90,8 @@ public final class TimedValueQueue<V> {
    * @return The value with the closest timestamp or null if the buffer is empty.
    * @see #pollFloor(long)
    */
-  public synchronized @Nullable V poll(long timestamp) {
+  @Nullable
+  public synchronized V poll(long timestamp) {
     return poll(timestamp, /* onlyOlder= */ false);
   }
 
@@ -99,7 +107,7 @@ public final class TimedValueQueue<V> {
    */
   @Nullable
   private V poll(long timestamp, boolean onlyOlder) {
-    V value = null;
+    @Nullable V value = null;
     long previousTimeDiff = Long.MAX_VALUE;
     while (size > 0) {
       long timeDiff = timestamp - timestamps[first];
@@ -107,14 +115,21 @@ public final class TimedValueQueue<V> {
         break;
       }
       previousTimeDiff = timeDiff;
-      value = values[first];
-      values[first] = null;
-      first = (first + 1) % values.length;
-      size--;
+      value = popFirst();
     }
     return value;
   }
 
+  @Nullable
+  private V popFirst() {
+    Assertions.checkState(size > 0);
+    @Nullable V value = values[first];
+    values[first] = null;
+    first = (first + 1) % values.length;
+    size--;
+    return value;
+  }
+
   private void clearBufferOnTimeDiscontinuity(long timestamp) {
     if (size > 0) {
       int last = (first + size - 1) % values.length;
@@ -131,7 +146,7 @@ public final class TimedValueQueue<V> {
     }
     int newCapacity = capacity * 2;
     long[] newTimestamps = new long[newCapacity];
-    V[] newValues = newArray(newCapacity);
+    @NullableType V[] newValues = newArray(newCapacity);
     // Reset the loop starting index to 0 while coping to the new buffer.
     // First copy the values from 'first' index to the end of original array.
     int length = capacity - first;
@@ -155,7 +170,7 @@ public final class TimedValueQueue<V> {
   }
 
   @SuppressWarnings("unchecked")
-  private static <V> V[] newArray(int length) {
+  private static <V> @NullableType V[] newArray(int length) {
     return (V[]) new Object[length];
   }
 }

library/core/src/test/java/com/google/android/exoplayer2/util/TimedValueQueueTest.java

@@ -33,23 +33,13 @@ public class TimedValueQueueTest {
     queue = new TimedValueQueue<>();
   }
 
-  @Test
-  public void addAndPollValues() {
-    queue.add(0, "a");
-    queue.add(1, "b");
-    queue.add(2, "c");
-    assertThat(queue.poll(0)).isEqualTo("a");
-    assertThat(queue.poll(1)).isEqualTo("b");
-    assertThat(queue.poll(2)).isEqualTo("c");
-  }
-
   @Test
   public void bufferCapacityIncreasesAutomatically() {
     queue = new TimedValueQueue<>(1);
     for (int i = 0; i < 20; i++) {
       queue.add(i, "" + i);
       if ((i & 1) == 1) {
-        assertThat(queue.poll(0)).isEqualTo("" + (i / 2));
+        assertThat(queue.pollFirst()).isEqualTo("" + (i / 2));
       }
     }
     assertThat(queue.size()).isEqualTo(10);
@@ -61,7 +51,7 @@ public class TimedValueQueueTest {
     queue.add(2, "c");
     queue.add(0, "a");
     assertThat(queue.size()).isEqualTo(1);
-    assertThat(queue.poll(0)).isEqualTo("a");
+    assertThat(queue.pollFirst()).isEqualTo("a");
   }
 
   @Test
@@ -71,7 +61,37 @@ public class TimedValueQueueTest {
     queue.add(3, "c");
     queue.add(2, "a");
     assertThat(queue.size()).isEqualTo(1);
-    assertThat(queue.poll(2)).isEqualTo("a");
+    assertThat(queue.pollFirst()).isEqualTo("a");
+  }
+
+  @Test
+  public void pollFirstReturnsValues() {
+    queue.add(0, "a");
+    queue.add(1, "b");
+    queue.add(2, "c");
+    assertThat(queue.pollFirst()).isEqualTo("a");
+    assertThat(queue.size()).isEqualTo(2);
+    assertThat(queue.pollFirst()).isEqualTo("b");
+    assertThat(queue.size()).isEqualTo(1);
+    assertThat(queue.pollFirst()).isEqualTo("c");
+    assertThat(queue.size()).isEqualTo(0);
+    assertThat(queue.pollFirst()).isEqualTo(null);
+    assertThat(queue.size()).isEqualTo(0);
+  }
+
+  @Test
+  public void pollReturnsValues() {
+    queue.add(0, "a");
+    queue.add(1, "b");
+    queue.add(2, "c");
+    assertThat(queue.poll(0)).isEqualTo("a");
+    assertThat(queue.size()).isEqualTo(2);
+    assertThat(queue.poll(1)).isEqualTo("b");
+    assertThat(queue.size()).isEqualTo(1);
+    assertThat(queue.poll(2)).isEqualTo("c");
+    assertThat(queue.size()).isEqualTo(0);
+    assertThat(queue.pollFirst()).isEqualTo(null);
+    assertThat(queue.size()).isEqualTo(0);
   }
 
   @Test