Tests: Move codec configure() out of VideoDecodingWrapper constructor.

This allows us to release both codecs used in SSIM when one fails to
configure() or start().

Tested and confirmed that on Samsung Galaxy Z Flip 4, running all
TransformationTest.java tests, tests after transform8k24() fails to start the
2nd codec:
* Before this CL, all fail.
* After this CL, all pass.

PiperOrigin-RevId: 490461560

libraries/transformer/src/androidTest/java/androidx/media3/transformer/SsimHelper.java

@@ -167,6 +167,7 @@ private static final class VideoDecodingWrapper implements Closeable {
     private static final String ASSET_FILE_SCHEME = "asset:///";
     private static final int MAX_IMAGES_ALLOWED = 1;
 
+    private final MediaFormat mediaFormat;
     private final MediaCodec mediaCodec;
     private final MediaExtractor mediaExtractor;
     private final MediaCodec.BufferInfo bufferInfo;
@@ -178,6 +179,7 @@ private static final class VideoDecodingWrapper implements Closeable {
     private boolean hasReadEndOfInputStream;
     private boolean queuedEndOfStreamToDecoder;
     private boolean dequeuedAllDecodedFrames;
+    private boolean isCodecStarted;
     private int dequeuedFramesCount;
 
     /**
@@ -230,10 +232,8 @@ public VideoDecodingWrapper(Context context, String filePath, int comparisonInte
 
       String sampleMimeType = checkNotNull(mediaFormat.getString(MediaFormat.KEY_MIME));
       mediaFormat.setInteger(MediaFormat.KEY_COLOR_FORMAT, MEDIA_CODEC_COLOR_SPACE);
+      this.mediaFormat = mediaFormat;
       mediaCodec = MediaCodec.createDecoderByType(sampleMimeType);
-      mediaCodec.configure(
-          mediaFormat, imageReader.getSurface(), /* crypto= */ null, /* flags= */ 0);
-      mediaCodec.start();
     }
 
     /**
@@ -243,6 +243,12 @@ public VideoDecodingWrapper(Context context, String filePath, int comparisonInte
      */
     @Nullable
     public Image runUntilComparisonFrameOrEnded() throws InterruptedException {
+      if (!isCodecStarted) {
+        mediaCodec.configure(
+            mediaFormat, imageReader.getSurface(), /* crypto= */ null, /* flags= */ 0);
+        mediaCodec.start();
+        isCodecStarted = true;
+      }
       while (!hasEnded() && !isCurrentFrameComparisonFrame) {
         while (dequeueOneFrameFromDecoder()) {}
         while (queueOneFrameToDecoder()) {}