From a17d36de12b7adb79b1e979803042efe505f876e Mon Sep 17 00:00:00 2001
From: Dustin <dburckh@gmail.com>
Date: Fri, 28 Jan 2022 17:42:04 -0700
Subject: [PATCH] Minor cleanup

---
 .../video/BitmapFactoryVideoRenderer.java     | 12 ++--
 .../extractor/avi/AviExtractor.java           | 71 ++++++++-----------
 2 files changed, 36 insertions(+), 47 deletions(-)

diff --git a/library/core/src/main/java/com/google/android/exoplayer2/video/BitmapFactoryVideoRenderer.java b/library/core/src/main/java/com/google/android/exoplayer2/video/BitmapFactoryVideoRenderer.java
index 41a17b7b9e..e7b15d2fd3 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/video/BitmapFactoryVideoRenderer.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/video/BitmapFactoryVideoRenderer.java
@@ -148,7 +148,10 @@ public class BitmapFactoryVideoRenderer extends BaseRenderer {
       return null;
     }
 
-    private void renderBitmap(final Bitmap bitmap, @NonNull final Surface surface) {
+    private void renderBitmap(final Bitmap bitmap, @Nullable final Surface surface) {
+      if (surface == null) {
+        return;
+      }
       //Log.d(TAG, "Drawing: " + bitmap.getWidth() + "x" + bitmap.getHeight());
       final Canvas canvas = surface.lockCanvas(null);
 
@@ -243,13 +246,8 @@ public class BitmapFactoryVideoRenderer extends BaseRenderer {
             if (sleep()) {
               continue main;
             }
-            if (!running) {
-              break main;
-            }
           }
-          @Nullable
-          final Surface surface = BitmapFactoryVideoRenderer.this.surface;
-          if (surface != null) {
+          if (running) {
             renderBitmap(bitmap, surface);
           }
         } else if (result == C.RESULT_FORMAT_READ) {
diff --git a/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/avi/AviExtractor.java b/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/avi/AviExtractor.java
index 614719112e..a48025afb5 100644
--- a/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/avi/AviExtractor.java
+++ b/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/avi/AviExtractor.java
@@ -57,6 +57,34 @@ public class AviExtractor implements Extractor {
     }
   }
 
+  static int checkAlign(final ExtractorInput input, PositionHolder seekPosition) {
+    final long position = input.getPosition();
+    if ((position & 1) ==1) {
+      seekPosition.position = position + 1;
+      return RESULT_SEEK;
+    }
+    return RESULT_CONTINUE;
+  }
+
+  static ByteBuffer allocate(int bytes) {
+    final byte[] buffer = new byte[bytes];
+    final ByteBuffer byteBuffer = ByteBuffer.wrap(buffer);
+    byteBuffer.order(ByteOrder.LITTLE_ENDIAN);
+    return byteBuffer;
+  }
+
+  @VisibleForTesting
+  static int getStreamId(int chunkId) {
+    final int upperChar = chunkId & 0xff;
+    if (Character.isDigit(upperChar)) {
+      final int lowerChar = (chunkId >> 8) & 0xff;
+      if (Character.isDigit(upperChar)) {
+        return (lowerChar & 0xf) + ((upperChar & 0xf) * 10);
+      }
+    }
+    return -1;
+  }
+
   static final String TAG = "AviExtractor";
   @VisibleForTesting
   static final int PEEK_BYTES = 28;
@@ -87,8 +115,6 @@ public class AviExtractor implements Extractor {
   static final int JUNK = 'J' | ('U' << 8) | ('N' << 16) | ('K' << 24);
   static final int REC_ = 'r' | ('e' << 8) | ('c' << 16) | (' ' << 24);
 
-  static final long SEEK_GAP = 2_000_000L; //Time between seek points in micro seconds
-
   @VisibleForTesting
   int state;
   @VisibleForTesting
@@ -112,7 +138,6 @@ public class AviExtractor implements Extractor {
 
   /**
    *
-   * @param input
    * @param bytes Must be at least 20
    */
   @Nullable
@@ -143,7 +168,7 @@ public class AviExtractor implements Extractor {
   }
 
   @Override
-  public boolean sniff(ExtractorInput input) throws IOException {
+  public boolean sniff(@NonNull ExtractorInput input) throws IOException {
     final ByteBuffer byteBuffer = getAviBuffer(input, PEEK_BYTES);
     if (byteBuffer == null) {
       return false;
@@ -155,29 +180,7 @@ public class AviExtractor implements Extractor {
       return false;
     }
     final int avih = byteBuffer.getInt();
-    if (avih != AviHeaderBox.AVIH) {
-      return false;
-    }
-    return true;
-  }
-
-  static ByteBuffer allocate(int bytes) {
-    final byte[] buffer = new byte[bytes];
-    final ByteBuffer byteBuffer = ByteBuffer.wrap(buffer);
-    byteBuffer.order(ByteOrder.LITTLE_ENDIAN);
-    return byteBuffer;
-  }
-
-  @VisibleForTesting
-  static int getStreamId(int chunkId) {
-    final int upperChar = chunkId & 0xff;
-    if (Character.isDigit(upperChar)) {
-      final int lowerChar = (chunkId >> 8) & 0xff;
-      if (Character.isDigit(upperChar)) {
-        return (lowerChar & 0xf) + ((upperChar & 0xf) * 10);
-      }
-    }
-    return -1;
+    return avih == AviHeaderBox.AVIH;
   }
 
   @VisibleForTesting
@@ -206,7 +209,7 @@ public class AviExtractor implements Extractor {
   }
 
   @Override
-  public void init(ExtractorOutput output) {
+  public void init(@NonNull ExtractorOutput output) {
     this.state = STATE_READ_TRACKS;
     this.output = output;
   }
@@ -379,9 +382,6 @@ public class AviExtractor implements Extractor {
 
   /**
    * Reads the index and sets the keyFrames and creates the SeekMap
-   * @param input
-   * @param remaining
-   * @throws IOException
    */
   void readIdx1(ExtractorInput input, int remaining) throws IOException {
     final AviTrack videoTrack = getVideoTrack();
@@ -478,15 +478,6 @@ public class AviExtractor implements Extractor {
     return null;
   }
 
-  int checkAlign(final ExtractorInput input, PositionHolder seekPosition) {
-    final long position = input.getPosition();
-    if ((position & 1) ==1) {
-      seekPosition.position = position +1;
-      return RESULT_SEEK;
-    }
-    return RESULT_CONTINUE;
-  }
-
   int readSamples(ExtractorInput input, PositionHolder seekPosition) throws IOException {
     if (chunkHandler != null) {
       if (chunkHandler.resume(input)) {