Stylistic cleanup

library/core/src/main/java/com/google/android/exoplayer2/extractor/flv/VideoTagPayloadReader.java

@@ -79,7 +79,7 @@ import com.google.android.exoplayer2.video.AvcConfig;
   @Override
   protected void parsePayload(ParsableByteArray data, long timeUs) throws ParserException {
     int packetType = data.readUnsignedByte();
-    int compositionTimeMs = data.readSignedInt24();
+    int compositionTimeMs = data.readInt24();
 
     timeUs += compositionTimeMs * 1000L;
     // Parse avc sequence header in case this was not done before.

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

@@ -233,7 +233,7 @@ public final class ParsableByteArray {
   }
 
   /**
-   * Reads the next two bytes as an signed value.
+   * Reads the next two bytes as a signed value.
    */
   public short readShort() {
     return (short) ((data[position++] & 0xFF) << 8
@@ -257,11 +257,12 @@ public final class ParsableByteArray {
   }
 
   /**
-   * Reads the next three bytes as an signed value.
+   * Reads the next three bytes as a signed value.
    */
-  public int readSignedInt24() {
-    int ui24 = readUnsignedInt24();
-    return (ui24 & 0x800000L) >>> 23 == 1 ? (ui24 | 0xff000000) : ui24;
+  public int readInt24() {
+    return ((data[position++] & 0xFF) << 24) >> 8
+        | (data[position++] & 0xFF) << 8
+        | (data[position++] & 0xFF);
   }
 
   /**
@@ -313,7 +314,7 @@ public final class ParsableByteArray {
   }
 
   /**
-   * Reads the next four bytes as an signed value in little endian order.
+   * Reads the next four bytes as a signed value in little endian order.
    */
   public int readLittleEndianInt() {
     return (data[position++] & 0xFF)

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

@@ -328,25 +328,25 @@ public final class ParsableByteArrayTest {
 
   @Test
   public void testReadLittleEndianUnsignedInt24() {
-    byte[] data = { 0x01, 0x02, (byte) 0xFF };
+    byte[] data = {0x01, 0x02, (byte) 0xFF};
     ParsableByteArray byteArray = new ParsableByteArray(data);
     assertThat(byteArray.readLittleEndianUnsignedInt24()).isEqualTo(0xFF0201);
     assertThat(byteArray.getPosition()).isEqualTo(3);
   }
 
   @Test
-  public void testReadPositiveSignedInt24() {
-    byte[] data = { 0x01, 0x02, (byte) 0xFF };
+  public void testReadInt24Positive() {
+    byte[] data = {0x01, 0x02, (byte) 0xFF};
     ParsableByteArray byteArray = new ParsableByteArray(data);
-    assertThat(byteArray.readSignedInt24()).isEqualTo(0x0102FF);
+    assertThat(byteArray.readInt24()).isEqualTo(0x0102FF);
     assertThat(byteArray.getPosition()).isEqualTo(3);
   }
 
   @Test
-  public void testReadNegativeSignedInt24() {
-    byte[] data = { (byte)0xFF, 0x02, (byte) 0x01 };
+  public void testReadInt24Negative() {
+    byte[] data = {(byte) 0xFF, 0x02, (byte) 0x01};
     ParsableByteArray byteArray = new ParsableByteArray(data);
-    assertThat(byteArray.readSignedInt24()).isEqualTo(0xFFFF0201);
+    assertThat(byteArray.readInt24()).isEqualTo(0xFFFF0201);
     assertThat(byteArray.getPosition()).isEqualTo(3);
   }