Rollback of https://github.com/google/ExoPlayer/commit/1ed5d8b5633f935d3c7f2cc52c1493616b7e0d32

*** Original commit ***

Rollback of https://github.com/google/ExoPlayer/commit/bf5e6c7862ae418895b2b6b26fae9c28aa662ee8

*** Original commit ***

Pass startPositionUs into Renderer.replaceStream

Plumb this down into BaseRenderer.onStreamChanged and use it when
deciding whether to render the first frame of a new period.

***

***

PiperOrigin-RevId: 325251261

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

@@ -15,6 +15,7 @@
  */
 package com.google.android.exoplayer2.mediacodec;
 
+import static com.google.android.exoplayer2.util.Assertions.checkState;
 import static java.lang.Math.max;
 
 import android.annotation.TargetApi;
@@ -352,6 +353,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
   private final TimedValueQueue<Format> formatQueue;
   private final ArrayList<Long> decodeOnlyPresentationTimestamps;
   private final MediaCodec.BufferInfo outputBufferInfo;
+  private final long[] pendingOutputStreamStartPositionsUs;
   private final long[] pendingOutputStreamOffsetsUs;
   private final long[] pendingOutputStreamSwitchTimesUs;
 
@@ -409,6 +411,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
   @MediaCodecOperationMode private int mediaCodecOperationMode;
   @Nullable private ExoPlaybackException pendingPlaybackException;
   protected DecoderCounters decoderCounters;
+  private long outputStreamStartPositionUs;
   private long outputStreamOffsetUs;
   private int pendingOutputStreamOffsetCount;
 
@@ -439,8 +442,10 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
     outputBufferInfo = new MediaCodec.BufferInfo();
     operatingRate = 1f;
     mediaCodecOperationMode = OPERATION_MODE_SYNCHRONOUS;
+    pendingOutputStreamStartPositionsUs = new long[MAX_PENDING_OUTPUT_STREAM_OFFSET_COUNT];
     pendingOutputStreamOffsetsUs = new long[MAX_PENDING_OUTPUT_STREAM_OFFSET_COUNT];
     pendingOutputStreamSwitchTimesUs = new long[MAX_PENDING_OUTPUT_STREAM_OFFSET_COUNT];
+    outputStreamStartPositionUs = C.TIME_UNSET;
     outputStreamOffsetUs = C.TIME_UNSET;
     bypassBatchBuffer = new BatchBuffer();
     resetCodecStateForRelease();
@@ -685,8 +690,10 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
   @Override
   protected void onStreamChanged(Format[] formats, long startPositionUs, long offsetUs)
       throws ExoPlaybackException {
-    if (outputStreamOffsetUs == C.TIME_UNSET) {
-      outputStreamOffsetUs = offsetUs;
+    if (this.outputStreamOffsetUs == C.TIME_UNSET) {
+      checkState(this.outputStreamStartPositionUs == C.TIME_UNSET);
+      this.outputStreamStartPositionUs = startPositionUs;
+      this.outputStreamOffsetUs = offsetUs;
     } else {
       if (pendingOutputStreamOffsetCount == pendingOutputStreamOffsetsUs.length) {
         Log.w(
@@ -696,6 +703,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
       } else {
         pendingOutputStreamOffsetCount++;
       }
+      pendingOutputStreamStartPositionsUs[pendingOutputStreamOffsetCount - 1] = startPositionUs;
       pendingOutputStreamOffsetsUs[pendingOutputStreamOffsetCount - 1] = offsetUs;
       pendingOutputStreamSwitchTimesUs[pendingOutputStreamOffsetCount - 1] =
           largestQueuedPresentationTimeUs;
@@ -721,6 +729,8 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
     formatQueue.clear();
     if (pendingOutputStreamOffsetCount != 0) {
       outputStreamOffsetUs = pendingOutputStreamOffsetsUs[pendingOutputStreamOffsetCount - 1];
+      outputStreamStartPositionUs =
+          pendingOutputStreamStartPositionsUs[pendingOutputStreamOffsetCount - 1];
       pendingOutputStreamOffsetCount = 0;
     }
   }
@@ -738,6 +748,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
   @Override
   protected void onDisabled() {
     inputFormat = null;
+    outputStreamStartPositionUs = C.TIME_UNSET;
     outputStreamOffsetUs = C.TIME_UNSET;
     pendingOutputStreamOffsetCount = 0;
     if (sourceDrmSession != null || codecDrmSession != null) {
@@ -1545,9 +1556,16 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
   protected void onProcessedOutputBuffer(long presentationTimeUs) {
     while (pendingOutputStreamOffsetCount != 0
         && presentationTimeUs >= pendingOutputStreamSwitchTimesUs[0]) {
+      outputStreamStartPositionUs = pendingOutputStreamStartPositionsUs[0];
       outputStreamOffsetUs = pendingOutputStreamOffsetsUs[0];
       pendingOutputStreamOffsetCount--;
       System.arraycopy(
+          pendingOutputStreamStartPositionsUs,
+          /* srcPos= */ 1,
+          pendingOutputStreamStartPositionsUs,
+          /* destPos= */ 0,
+          pendingOutputStreamOffsetCount);
+      System.arraycopy(
           pendingOutputStreamOffsetsUs,
           /* srcPos= */ 1,
           pendingOutputStreamOffsetsUs,
@@ -1946,6 +1964,13 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
   }
 
   /**
+   * Returns the start position of the output {@link SampleStream}, in renderer time microseconds.
+   */
+  protected final long getOutputStreamStartPositionUs() {
+    return outputStreamStartPositionUs;
+  }
+
+  /**
    * Returns the offset that should be subtracted from {@code bufferPresentationTimeUs} in {@link
    * #processOutputBuffer(long, long, MediaCodec, ByteBuffer, int, int, int, long, boolean, boolean,
    * Format)} to get the playback position with respect to the media.
@@ -2080,7 +2105,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
     BatchBuffer batchBuffer = bypassBatchBuffer;
 
     // Let's process the pending buffer if any.
-    Assertions.checkState(!outputStreamEnded);
+    checkState(!outputStreamEnded);
     if (!batchBuffer.isEmpty()) { // Optimisation: Do not process buffer if empty.
       if (processOutputBuffer(
           positionUs,
@@ -2119,7 +2144,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
     }
 
     // Now refill the empty buffer for the next iteration.
-    Assertions.checkState(!inputStreamEnded);
+    checkState(!inputStreamEnded);
     FormatHolder formatHolder = getFormatHolder();
     boolean formatChange = readBatchFromSource(formatHolder, batchBuffer);