Clear FormatHolder before and after reading from the source.

PiperOrigin-RevId: 267135256

library/core/src/main/java/com/google/android/exoplayer2/FormatHolder.java

@@ -33,4 +33,11 @@ public final class FormatHolder {
 
   /** The held {@link Format}. */
   @Nullable public Format format;
+
+  /** Clears the holder. */
+  public void clear() {
+    includesDrmSession = false;
+    drmSession = null;
+    format = null;
+  }
 }

library/core/src/main/java/com/google/android/exoplayer2/audio/SimpleDecoderAudioRenderer.java

@@ -271,10 +271,12 @@ public abstract class SimpleDecoderAudioRenderer extends BaseRenderer implements
     // Try and read a format if we don't have one already.
     if (inputFormat == null) {
       // We don't have a format yet, so try and read one.
+      formatHolder.clear();
       flagsOnlyBuffer.clear();
       int result = readSource(formatHolder, flagsOnlyBuffer, true);
       if (result == C.RESULT_FORMAT_READ) {
         onInputFormatChanged(formatHolder);
+        formatHolder.clear();
       } else if (result == C.RESULT_BUFFER_READ) {
         // End of stream read having not read a format.
         Assertions.checkState(flagsOnlyBuffer.isEndOfStream());
@@ -432,6 +434,7 @@ public abstract class SimpleDecoderAudioRenderer extends BaseRenderer implements
       // We've already read an encrypted sample into buffer, and are waiting for keys.
       result = C.RESULT_BUFFER_READ;
     } else {
+      formatHolder.clear();
       result = readSource(formatHolder, inputBuffer, false);
     }
 
@@ -440,6 +443,7 @@ public abstract class SimpleDecoderAudioRenderer extends BaseRenderer implements
     }
     if (result == C.RESULT_FORMAT_READ) {
       onInputFormatChanged(formatHolder);
+      formatHolder.clear();
       return true;
     }
     if (inputBuffer.isEndOfStream()) {

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

@@ -770,10 +770,12 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
 
   /** Reads into {@link #flagsOnlyBuffer} and returns whether a format was read. */
   private boolean readToFlagsOnlyBuffer(boolean requireFormat) throws ExoPlaybackException {
+    formatHolder.clear();
     flagsOnlyBuffer.clear();
     int result = readSource(formatHolder, flagsOnlyBuffer, requireFormat);
     if (result == C.RESULT_FORMAT_READ) {
       onInputFormatChanged(formatHolder);
+      formatHolder.clear();
       return true;
     } else if (result == C.RESULT_BUFFER_READ && flagsOnlyBuffer.isEndOfStream()) {
       inputStreamEnded = true;
@@ -1056,6 +1058,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
         codecReconfigurationState = RECONFIGURATION_STATE_QUEUE_PENDING;
       }
       adaptiveReconfigurationBytes = buffer.data.position();
+      formatHolder.clear();
       result = readSource(formatHolder, buffer, false);
     }
 
@@ -1075,6 +1078,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
         codecReconfigurationState = RECONFIGURATION_STATE_WRITE_PENDING;
       }
       onInputFormatChanged(formatHolder);
+      formatHolder.clear();
       return true;
     }
 

library/core/src/main/java/com/google/android/exoplayer2/metadata/MetadataRenderer.java

@@ -114,6 +114,7 @@ public final class MetadataRenderer extends BaseRenderer implements Callback {
   public void render(long positionUs, long elapsedRealtimeUs) throws ExoPlaybackException {
     if (!inputStreamEnded && pendingMetadataCount < MAX_PENDING_METADATA_COUNT) {
       buffer.clear();
+      formatHolder.clear();
       int result = readSource(formatHolder, buffer, false);
       if (result == C.RESULT_BUFFER_READ) {
         if (buffer.isEndOfStream()) {
@@ -141,6 +142,7 @@ public final class MetadataRenderer extends BaseRenderer implements Callback {
         }
       } else if (result == C.RESULT_FORMAT_READ) {
         subsampleOffsetUs = formatHolder.format.subsampleOffsetUs;
+        formatHolder.clear();
       }
     }
 

library/core/src/main/java/com/google/android/exoplayer2/video/SimpleDecoderVideoRenderer.java

@@ -168,10 +168,12 @@ public abstract class SimpleDecoderVideoRenderer extends BaseRenderer {
 
     if (format == null) {
       // We don't have a format yet, so try and read one.
+      formatHolder.clear();
       flagsOnlyBuffer.clear();
       int result = readSource(formatHolder, flagsOnlyBuffer, true);
       if (result == C.RESULT_FORMAT_READ) {
         onInputFormatChanged(formatHolder);
+        formatHolder.clear();
       } else if (result == C.RESULT_BUFFER_READ) {
         // End of stream read having not read a format.
         Assertions.checkState(flagsOnlyBuffer.isEndOfStream());
@@ -701,6 +703,7 @@ public abstract class SimpleDecoderVideoRenderer extends BaseRenderer {
       // We've already read an encrypted sample into buffer, and are waiting for keys.
       result = C.RESULT_BUFFER_READ;
     } else {
+      formatHolder.clear();
       result = readSource(formatHolder, inputBuffer, false);
     }
 
@@ -709,6 +712,7 @@ public abstract class SimpleDecoderVideoRenderer extends BaseRenderer {
     }
     if (result == C.RESULT_FORMAT_READ) {
       onInputFormatChanged(formatHolder);
+      formatHolder.clear();
       return true;
     }
     if (inputBuffer.isEndOfStream()) {

library/core/src/main/java/com/google/android/exoplayer2/video/spherical/CameraMotionRenderer.java

@@ -85,8 +85,10 @@ public class CameraMotionRenderer extends BaseRenderer {
     // Keep reading available samples as long as the sample time is not too far into the future.
     while (!hasReadStreamToEnd() && lastTimestampUs < positionUs + SAMPLE_WINDOW_DURATION_US) {
       buffer.clear();
+      formatHolder.clear();
       int result = readSource(formatHolder, buffer, /* formatRequired= */ false);
       if (result != C.RESULT_BUFFER_READ || buffer.isEndOfStream()) {
+        formatHolder.clear();
         return;
       }
 

testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeRenderer.java

@@ -79,13 +79,14 @@ public class FakeRenderer extends BaseRenderer {
     }
     playbackPositionUs = positionUs;
     while (lastSamplePositionUs < positionUs + SOURCE_READAHEAD_US) {
-      formatHolder.format = null;
+      formatHolder.clear();
       buffer.clear();
       int result = readSource(formatHolder, buffer, false);
       if (result == C.RESULT_FORMAT_READ) {
         formatReadCount++;
         assertThat(expectedFormats).contains(formatHolder.format);
         onFormatChanged(formatHolder.format);
+        formatHolder.clear();
       } else if (result == C.RESULT_BUFFER_READ) {
         if (buffer.isEndOfStream()) {
           isEnded = true;