Increase minSdkVersion to 16

The combination of pre-16 API levels accounting for ~0.5% of the device
population, and that the most important components in ExoPlayer (e.g.
the MediaCodec renderers) have always required API level 16, mean it's
very unlikely this will negatively impact on anyone.

PiperOrigin-RevId: 230701808

RELEASENOTES.md

@@ -2,6 +2,7 @@
 
 
 ### dev-v2 (not yet released) ###
 ### dev-v2 (not yet released) ###
 
 
+* Increase `minSdkVersion` to 16 (Jellybean).
 * Support for playing spherical videos on Daydream.
 * Support for playing spherical videos on Daydream.
 * Improve decoder re-use between playbacks. TODO: Write and link a blog post
 * Improve decoder re-use between playbacks. TODO: Write and link a blog post
   here ([#2826](https://github.com/google/ExoPlayer/issues/2826)).
   here ([#2826](https://github.com/google/ExoPlayer/issues/2826)).

constants.gradle

@@ -15,11 +15,7 @@ project.ext {
     // ExoPlayer version and version code.
     // ExoPlayer version and version code.
     releaseVersion = '2.9.4'
     releaseVersion = '2.9.4'
     releaseVersionCode = 2009004
     releaseVersionCode = 2009004
-    // Important: ExoPlayer specifies a minSdkVersion of 14 because various
-    // components provided by the library may be of use on older devices.
-    // However, please note that the core media playback functionality provided
-    // by the library requires API level 16 or greater.
-    minSdkVersion = 14
+    minSdkVersion = 16
     targetSdkVersion = 28
     targetSdkVersion = 28
     compileSdkVersion = 28
     compileSdkVersion = 28
     buildToolsVersion = '28.0.2'
     buildToolsVersion = '28.0.2'

demos/cast/build.gradle

@@ -26,7 +26,7 @@ android {
     defaultConfig {
     defaultConfig {
         versionName project.ext.releaseVersion
         versionName project.ext.releaseVersion
         versionCode project.ext.releaseVersionCode
         versionCode project.ext.releaseVersionCode
-        minSdkVersion 16
+        minSdkVersion project.ext.minSdkVersion
         targetSdkVersion project.ext.targetSdkVersion
         targetSdkVersion project.ext.targetSdkVersion
     }
     }
 
 

demos/ima/build.gradle

@@ -26,7 +26,7 @@ android {
     defaultConfig {
     defaultConfig {
         versionName project.ext.releaseVersion
         versionName project.ext.releaseVersion
         versionCode project.ext.releaseVersionCode
         versionCode project.ext.releaseVersionCode
-        minSdkVersion 16
+        minSdkVersion project.ext.minSdkVersion
         targetSdkVersion project.ext.targetSdkVersion
         targetSdkVersion project.ext.targetSdkVersion
     }
     }
 
 

demos/main/build.gradle

@@ -26,7 +26,7 @@ android {
     defaultConfig {
     defaultConfig {
         versionName project.ext.releaseVersion
         versionName project.ext.releaseVersion
         versionCode project.ext.releaseVersionCode
         versionCode project.ext.releaseVersionCode
-        minSdkVersion 16
+        minSdkVersion project.ext.minSdkVersion
         targetSdkVersion project.ext.targetSdkVersion
         targetSdkVersion project.ext.targetSdkVersion
     }
     }
 
 

extensions/cast/build.gradle

@@ -24,7 +24,7 @@ android {
     }
     }
 
 
     defaultConfig {
     defaultConfig {
-        minSdkVersion 14
+        minSdkVersion project.ext.minSdkVersion
         targetSdkVersion project.ext.targetSdkVersion
         targetSdkVersion project.ext.targetSdkVersion
         consumerProguardFiles 'proguard-rules.txt'
         consumerProguardFiles 'proguard-rules.txt'
     }
     }

extensions/cronet/build.gradle

@@ -19,7 +19,7 @@ android {
     buildToolsVersion project.ext.buildToolsVersion
     buildToolsVersion project.ext.buildToolsVersion
 
 
     defaultConfig {
     defaultConfig {
-        minSdkVersion 16
+        minSdkVersion project.ext.minSdkVersion
         targetSdkVersion project.ext.targetSdkVersion
         targetSdkVersion project.ext.targetSdkVersion
     }
     }
 
 

extensions/rtmp/build.gradle

@@ -24,7 +24,7 @@ android {
     }
     }
 
 
     defaultConfig {
     defaultConfig {
-        minSdkVersion 15
+        minSdkVersion project.ext.minSdkVersion
         targetSdkVersion project.ext.targetSdkVersion
         targetSdkVersion project.ext.targetSdkVersion
     }
     }
 }
 }

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

@@ -63,7 +63,6 @@ import java.util.concurrent.CopyOnWriteArraySet;
  * An {@link ExoPlayer} implementation that uses default {@link Renderer} components. Instances can
  * An {@link ExoPlayer} implementation that uses default {@link Renderer} components. Instances can
  * be obtained from {@link ExoPlayerFactory}.
  * be obtained from {@link ExoPlayerFactory}.
  */
  */
-@TargetApi(16)
 public class SimpleExoPlayer extends BasePlayer
 public class SimpleExoPlayer extends BasePlayer
     implements ExoPlayer,
     implements ExoPlayer,
         Player.AudioComponent,
         Player.AudioComponent,

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

@@ -16,7 +16,6 @@
 package com.google.android.exoplayer2.audio;
 package com.google.android.exoplayer2.audio;
 
 
 import android.annotation.SuppressLint;
 import android.annotation.SuppressLint;
-import android.annotation.TargetApi;
 import android.content.Context;
 import android.content.Context;
 import android.media.MediaCodec;
 import android.media.MediaCodec;
 import android.media.MediaCrypto;
 import android.media.MediaCrypto;
@@ -66,7 +65,6 @@ import java.util.List;
  *       underlying audio track.
  *       underlying audio track.
  * </ul>
  * </ul>
  */
  */
-@TargetApi(16)
 public class MediaCodecAudioRenderer extends MediaCodecRenderer implements MediaClock {
 public class MediaCodecAudioRenderer extends MediaCodecRenderer implements MediaClock {
 
 
   /**
   /**

library/core/src/main/java/com/google/android/exoplayer2/decoder/CryptoInfo.java

@@ -62,7 +62,7 @@ public final class CryptoInfo {
   private final PatternHolderV24 patternHolder;
   private final PatternHolderV24 patternHolder;
 
 
   public CryptoInfo() {
   public CryptoInfo() {
-    frameworkCryptoInfo = Util.SDK_INT >= 16 ? newFrameworkCryptoInfoV16() : null;
+    frameworkCryptoInfo = new android.media.MediaCodec.CryptoInfo();
     patternHolder = Util.SDK_INT >= 24 ? new PatternHolderV24(frameworkCryptoInfo) : null;
     patternHolder = Util.SDK_INT >= 24 ? new PatternHolderV24(frameworkCryptoInfo) : null;
   }
   }
 
 
@@ -79,43 +79,36 @@ public final class CryptoInfo {
     this.mode = mode;
     this.mode = mode;
     this.encryptedBlocks = encryptedBlocks;
     this.encryptedBlocks = encryptedBlocks;
     this.clearBlocks = clearBlocks;
     this.clearBlocks = clearBlocks;
-    if (Util.SDK_INT >= 16) {
-      updateFrameworkCryptoInfoV16();
+    // Update frameworkCryptoInfo fields directly because CryptoInfo.set performs an unnecessary
+    // object allocation on Android N.
+    frameworkCryptoInfo.numSubSamples = numSubSamples;
+    frameworkCryptoInfo.numBytesOfClearData = numBytesOfClearData;
+    frameworkCryptoInfo.numBytesOfEncryptedData = numBytesOfEncryptedData;
+    frameworkCryptoInfo.key = key;
+    frameworkCryptoInfo.iv = iv;
+    frameworkCryptoInfo.mode = mode;
+    if (Util.SDK_INT >= 24) {
+      patternHolder.set(encryptedBlocks, clearBlocks);
     }
     }
   }
   }
 
 
   /**
   /**
    * Returns an equivalent {@link android.media.MediaCodec.CryptoInfo} instance.
    * Returns an equivalent {@link android.media.MediaCodec.CryptoInfo} instance.
-   * <p>
-   * Successive calls to this method on a single {@link CryptoInfo} will return the same instance.
-   * Changes to the {@link CryptoInfo} will be reflected in the returned object. The return object
-   * should not be modified directly.
+   *
+   * <p>Successive calls to this method on a single {@link CryptoInfo} will return the same
+   * instance. Changes to the {@link CryptoInfo} will be reflected in the returned object. The
+   * return object should not be modified directly.
    *
    *
    * @return The equivalent {@link android.media.MediaCodec.CryptoInfo} instance.
    * @return The equivalent {@link android.media.MediaCodec.CryptoInfo} instance.
    */
    */
-  @TargetApi(16)
-  public android.media.MediaCodec.CryptoInfo getFrameworkCryptoInfoV16() {
+  public android.media.MediaCodec.CryptoInfo getFrameworkCryptoInfo() {
     return frameworkCryptoInfo;
     return frameworkCryptoInfo;
   }
   }
 
 
-  @TargetApi(16)
-  private android.media.MediaCodec.CryptoInfo newFrameworkCryptoInfoV16() {
-    return new android.media.MediaCodec.CryptoInfo();
-  }
-
-  @TargetApi(16)
-  private void updateFrameworkCryptoInfoV16() {
-    // Update fields directly because the framework's CryptoInfo.set performs an unnecessary object
-    // allocation on Android N.
-    frameworkCryptoInfo.numSubSamples = numSubSamples;
-    frameworkCryptoInfo.numBytesOfClearData = numBytesOfClearData;
-    frameworkCryptoInfo.numBytesOfEncryptedData = numBytesOfEncryptedData;
-    frameworkCryptoInfo.key = key;
-    frameworkCryptoInfo.iv = iv;
-    frameworkCryptoInfo.mode = mode;
-    if (Util.SDK_INT >= 24) {
-      patternHolder.set(encryptedBlocks, clearBlocks);
-    }
+  /** @deprecated Use {@link #getFrameworkCryptoInfo()}. */
+  @Deprecated
+  public android.media.MediaCodec.CryptoInfo getFrameworkCryptoInfoV16() {
+    return getFrameworkCryptoInfo();
   }
   }
 
 
   @TargetApi(24)
   @TargetApi(24)

library/core/src/main/java/com/google/android/exoplayer2/drm/DrmSession.java

@@ -15,7 +15,6 @@
  */
  */
 package com.google.android.exoplayer2.drm;
 package com.google.android.exoplayer2.drm;
 
 
-import android.annotation.TargetApi;
 import android.media.MediaDrm;
 import android.media.MediaDrm;
 import android.support.annotation.IntDef;
 import android.support.annotation.IntDef;
 import android.support.annotation.Nullable;
 import android.support.annotation.Nullable;
@@ -27,7 +26,6 @@ import java.util.Map;
 /**
 /**
  * A DRM session.
  * A DRM session.
  */
  */
-@TargetApi(16)
 public interface DrmSession<T extends ExoMediaCrypto> {
 public interface DrmSession<T extends ExoMediaCrypto> {
 
 
   /**
   /**

library/core/src/main/java/com/google/android/exoplayer2/drm/DrmSessionManager.java

@@ -15,14 +15,12 @@
  */
  */
 package com.google.android.exoplayer2.drm;
 package com.google.android.exoplayer2.drm;
 
 
-import android.annotation.TargetApi;
 import android.os.Looper;
 import android.os.Looper;
 import com.google.android.exoplayer2.drm.DrmInitData.SchemeData;
 import com.google.android.exoplayer2.drm.DrmInitData.SchemeData;
 
 
 /**
 /**
  * Manages a DRM session.
  * Manages a DRM session.
  */
  */
-@TargetApi(16)
 public interface DrmSessionManager<T extends ExoMediaCrypto> {
 public interface DrmSessionManager<T extends ExoMediaCrypto> {
 
 
   /**
   /**

library/core/src/main/java/com/google/android/exoplayer2/drm/FrameworkMediaCrypto.java

@@ -15,7 +15,6 @@
  */
  */
 package com.google.android.exoplayer2.drm;
 package com.google.android.exoplayer2.drm;
 
 
-import android.annotation.TargetApi;
 import android.media.MediaCrypto;
 import android.media.MediaCrypto;
 import java.util.UUID;
 import java.util.UUID;
 
 
@@ -23,7 +22,6 @@ import java.util.UUID;
  * An {@link ExoMediaCrypto} implementation that contains the necessary information to build or
  * An {@link ExoMediaCrypto} implementation that contains the necessary information to build or
  * update a framework {@link MediaCrypto}.
  * update a framework {@link MediaCrypto}.
  */
  */
-@TargetApi(16)
 public final class FrameworkMediaCrypto implements ExoMediaCrypto {
 public final class FrameworkMediaCrypto implements ExoMediaCrypto {
 
 
   /** The DRM scheme UUID. */
   /** The DRM scheme UUID. */

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

@@ -31,7 +31,6 @@ import com.google.android.exoplayer2.util.MimeTypes;
 import com.google.android.exoplayer2.util.Util;
 import com.google.android.exoplayer2.util.Util;
 
 
 /** Information about a {@link MediaCodec} for a given mime type. */
 /** Information about a {@link MediaCodec} for a given mime type. */
-@TargetApi(16)
 @SuppressWarnings("InlinedApi")
 @SuppressWarnings("InlinedApi")
 public final class MediaCodecInfo {
 public final class MediaCodecInfo {
 
 

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

@@ -58,7 +58,6 @@ import java.util.List;
 /**
 /**
  * An abstract renderer that uses {@link MediaCodec} to decode samples for rendering.
  * An abstract renderer that uses {@link MediaCodec} to decode samples for rendering.
  */
  */
-@TargetApi(16)
 public abstract class MediaCodecRenderer extends BaseRenderer {
 public abstract class MediaCodecRenderer extends BaseRenderer {
 
 
   /**
   /**
@@ -366,7 +365,6 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
       boolean playClearSamplesWithoutKeys,
       boolean playClearSamplesWithoutKeys,
       float assumedMinimumCodecOperatingRate) {
       float assumedMinimumCodecOperatingRate) {
     super(trackType);
     super(trackType);
-    Assertions.checkState(Util.SDK_INT >= 16);
     this.mediaCodecSelector = Assertions.checkNotNull(mediaCodecSelector);
     this.mediaCodecSelector = Assertions.checkNotNull(mediaCodecSelector);
     this.drmSessionManager = drmSessionManager;
     this.drmSessionManager = drmSessionManager;
     this.playClearSamplesWithoutKeys = playClearSamplesWithoutKeys;
     this.playClearSamplesWithoutKeys = playClearSamplesWithoutKeys;
@@ -1662,7 +1660,7 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
 
 
   private static MediaCodec.CryptoInfo getFrameworkCryptoInfo(
   private static MediaCodec.CryptoInfo getFrameworkCryptoInfo(
       DecoderInputBuffer buffer, int adaptiveReconfigurationBytes) {
       DecoderInputBuffer buffer, int adaptiveReconfigurationBytes) {
-    MediaCodec.CryptoInfo cryptoInfo = buffer.cryptoInfo.getFrameworkCryptoInfoV16();
+    MediaCodec.CryptoInfo cryptoInfo = buffer.cryptoInfo.getFrameworkCryptoInfo();
     if (adaptiveReconfigurationBytes == 0) {
     if (adaptiveReconfigurationBytes == 0) {
       return cryptoInfo;
       return cryptoInfo;
     }
     }

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

@@ -39,7 +39,6 @@ import java.util.regex.Pattern;
 /**
 /**
  * A utility class for querying the available codecs.
  * A utility class for querying the available codecs.
  */
  */
-@TargetApi(16)
 @SuppressLint("InlinedApi")
 @SuppressLint("InlinedApi")
 public final class MediaCodecUtil {
 public final class MediaCodecUtil {
 
 

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

@@ -15,7 +15,6 @@
  */
  */
 package com.google.android.exoplayer2.mediacodec;
 package com.google.android.exoplayer2.mediacodec;
 
 
-import android.annotation.TargetApi;
 import android.media.MediaFormat;
 import android.media.MediaFormat;
 import android.support.annotation.Nullable;
 import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.Format;
@@ -24,7 +23,6 @@ import java.nio.ByteBuffer;
 import java.util.List;
 import java.util.List;
 
 
 /** Helper class for configuring {@link MediaFormat} instances. */
 /** Helper class for configuring {@link MediaFormat} instances. */
-@TargetApi(16)
 public final class MediaFormatUtil {
 public final class MediaFormatUtil {
 
 
   private MediaFormatUtil() {}
   private MediaFormatUtil() {}

library/core/src/main/java/com/google/android/exoplayer2/scheduler/Requirements.java

@@ -200,7 +200,7 @@ public final class Requirements {
       logd("Roaming: " + roaming);
       logd("Roaming: " + roaming);
       return !roaming;
       return !roaming;
     }
     }
-    boolean activeNetworkMetered = isActiveNetworkMetered(connectivityManager, networkInfo);
+    boolean activeNetworkMetered = connectivityManager.isActiveNetworkMetered();
     logd("Metered network: " + activeNetworkMetered);
     logd("Metered network: " + activeNetworkMetered);
     if (networkRequirement == NETWORK_TYPE_UNMETERED) {
     if (networkRequirement == NETWORK_TYPE_UNMETERED) {
       return !activeNetworkMetered;
       return !activeNetworkMetered;
@@ -255,17 +255,6 @@ public final class Requirements {
     return !validated;
     return !validated;
   }
   }
 
 
-  private static boolean isActiveNetworkMetered(
-      ConnectivityManager connectivityManager, NetworkInfo networkInfo) {
-    if (Util.SDK_INT >= 16) {
-      return connectivityManager.isActiveNetworkMetered();
-    }
-    int type = networkInfo.getType();
-    return type != ConnectivityManager.TYPE_WIFI
-        && type != ConnectivityManager.TYPE_BLUETOOTH
-        && type != ConnectivityManager.TYPE_ETHERNET;
-  }
-
   private static void logd(String message) {
   private static void logd(String message) {
     if (Scheduler.DEBUG) {
     if (Scheduler.DEBUG) {
       Log.d(TAG, message);
       Log.d(TAG, message);

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

@@ -17,7 +17,6 @@ package com.google.android.exoplayer2.util;
 
 
 import static android.opengl.GLU.gluErrorString;
 import static android.opengl.GLU.gluErrorString;
 
 
-import android.annotation.TargetApi;
 import android.opengl.GLES11Ext;
 import android.opengl.GLES11Ext;
 import android.opengl.GLES20;
 import android.opengl.GLES20;
 import android.text.TextUtils;
 import android.text.TextUtils;
@@ -114,7 +113,6 @@ public final class GlUtil {
    * Creates a GL_TEXTURE_EXTERNAL_OES with default configuration of GL_LINEAR filtering and
    * Creates a GL_TEXTURE_EXTERNAL_OES with default configuration of GL_LINEAR filtering and
    * GL_CLAMP_TO_EDGE wrapping.
    * GL_CLAMP_TO_EDGE wrapping.
    */
    */
-  @TargetApi(15)
   public static int createExternalTexture() {
   public static int createExternalTexture() {
     int[] texId = new int[1];
     int[] texId = new int[1];
     GLES20.glGenTextures(1, IntBuffer.wrap(texId));
     GLES20.glGenTextures(1, IntBuffer.wrap(texId));

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

@@ -1844,10 +1844,8 @@ public final class Util {
       getDisplaySizeV23(display, displaySize);
       getDisplaySizeV23(display, displaySize);
     } else if (Util.SDK_INT >= 17) {
     } else if (Util.SDK_INT >= 17) {
       getDisplaySizeV17(display, displaySize);
       getDisplaySizeV17(display, displaySize);
-    } else if (Util.SDK_INT >= 16) {
-      getDisplaySizeV16(display, displaySize);
     } else {
     } else {
-      getDisplaySizeV9(display, displaySize);
+      getDisplaySizeV16(display, displaySize);
     }
     }
     return displaySize;
     return displaySize;
   }
   }
@@ -1903,17 +1901,10 @@ public final class Util {
     display.getRealSize(outSize);
     display.getRealSize(outSize);
   }
   }
 
 
-  @TargetApi(16)
   private static void getDisplaySizeV16(Display display, Point outSize) {
   private static void getDisplaySizeV16(Display display, Point outSize) {
     display.getSize(outSize);
     display.getSize(outSize);
   }
   }
 
 
-  @SuppressWarnings("deprecation")
-  private static void getDisplaySizeV9(Display display, Point outSize) {
-    outSize.x = display.getWidth();
-    outSize.y = display.getHeight();
-  }
-
   private static @C.NetworkType int getMobileNetworkType(NetworkInfo networkInfo) {
   private static @C.NetworkType int getMobileNetworkType(NetworkInfo networkInfo) {
     switch (networkInfo.getSubtype()) {
     switch (networkInfo.getSubtype()) {
       case TelephonyManager.NETWORK_TYPE_EDGE:
       case TelephonyManager.NETWORK_TYPE_EDGE:

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

@@ -68,7 +68,6 @@ import java.util.List;
  *       a {@link android.view.SurfaceView}.
  *       a {@link android.view.SurfaceView}.
  * </ul>
  * </ul>
  */
  */
-@TargetApi(16)
 public class MediaCodecVideoRenderer extends MediaCodecRenderer {
 public class MediaCodecVideoRenderer extends MediaCodecRenderer {
 
 
   private static final String TAG = "MediaCodecVideoRenderer";
   private static final String TAG = "MediaCodecVideoRenderer";

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

@@ -32,7 +32,6 @@ import com.google.android.exoplayer2.util.Util;
 /**
 /**
  * Makes a best effort to adjust frame release timestamps for a smoother visual result.
  * Makes a best effort to adjust frame release timestamps for a smoother visual result.
  */
  */
-@TargetApi(16)
 public final class VideoFrameReleaseTimeHelper {
 public final class VideoFrameReleaseTimeHelper {
 
 
   private static final long CHOREOGRAPHER_SAMPLE_DELAY_MILLIS = 500;
   private static final long CHOREOGRAPHER_SAMPLE_DELAY_MILLIS = 500;

library/core/src/test/java/com/google/android/exoplayer2/extractor/mp4/Mp4ExtractorTest.java

@@ -15,14 +15,12 @@
  */
  */
 package com.google.android.exoplayer2.extractor.mp4;
 package com.google.android.exoplayer2.extractor.mp4;
 
 
-import android.annotation.TargetApi;
 import com.google.android.exoplayer2.testutil.ExtractorAsserts;
 import com.google.android.exoplayer2.testutil.ExtractorAsserts;
 import org.junit.Test;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runner.RunWith;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RobolectricTestRunner;
 
 
 /** Tests for {@link Mp4Extractor}. */
 /** Tests for {@link Mp4Extractor}. */
-@TargetApi(16)
 @RunWith(RobolectricTestRunner.class)
 @RunWith(RobolectricTestRunner.class)
 public final class Mp4ExtractorTest {
 public final class Mp4ExtractorTest {
 
 

library/core/src/test/java/com/google/android/exoplayer2/extractor/rawcc/RawCcExtractorTest.java

@@ -15,7 +15,6 @@
  */
  */
 package com.google.android.exoplayer2.extractor.rawcc;
 package com.google.android.exoplayer2.extractor.rawcc;
 
 
-import android.annotation.TargetApi;
 import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.testutil.ExtractorAsserts;
 import com.google.android.exoplayer2.testutil.ExtractorAsserts;
 import com.google.android.exoplayer2.util.MimeTypes;
 import com.google.android.exoplayer2.util.MimeTypes;
@@ -24,7 +23,6 @@ import org.junit.runner.RunWith;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RobolectricTestRunner;
 
 
 /** Tests for {@link RawCcExtractor}. */
 /** Tests for {@link RawCcExtractor}. */
-@TargetApi(16)
 @RunWith(RobolectricTestRunner.class)
 @RunWith(RobolectricTestRunner.class)
 public final class RawCcExtractorTest {
 public final class RawCcExtractorTest {
 
 

library/ui/src/main/java/com/google/android/exoplayer2/ui/DefaultTimeBar.java

@@ -319,8 +319,8 @@ public class DefaultTimeBar extends View implements TimeBar {
     keyTimeIncrement = C.TIME_UNSET;
     keyTimeIncrement = C.TIME_UNSET;
     keyCountIncrement = DEFAULT_INCREMENT_COUNT;
     keyCountIncrement = DEFAULT_INCREMENT_COUNT;
     setFocusable(true);
     setFocusable(true);
-    if (Util.SDK_INT >= 16) {
-      maybeSetImportantForAccessibilityV16();
+    if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
+      setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
     }
     }
   }
   }
 
 
@@ -611,13 +611,12 @@ public class DefaultTimeBar extends View implements TimeBar {
     if (Util.SDK_INT >= 21) {
     if (Util.SDK_INT >= 21) {
       info.addAction(AccessibilityAction.ACTION_SCROLL_FORWARD);
       info.addAction(AccessibilityAction.ACTION_SCROLL_FORWARD);
       info.addAction(AccessibilityAction.ACTION_SCROLL_BACKWARD);
       info.addAction(AccessibilityAction.ACTION_SCROLL_BACKWARD);
-    } else if (Util.SDK_INT >= 16) {
+    } else {
       info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_FORWARD);
       info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_FORWARD);
       info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD);
       info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD);
     }
     }
   }
   }
 
 
-  @TargetApi(16)
   @Override
   @Override
   public boolean performAccessibilityAction(int action, @Nullable Bundle args) {
   public boolean performAccessibilityAction(int action, @Nullable Bundle args) {
     if (super.performAccessibilityAction(action, args)) {
     if (super.performAccessibilityAction(action, args)) {
@@ -643,13 +642,6 @@ public class DefaultTimeBar extends View implements TimeBar {
 
 
   // Internal methods.
   // Internal methods.
 
 
-  @TargetApi(16)
-  private void maybeSetImportantForAccessibilityV16() {
-    if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
-      setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
-    }
-  }
-
   private void startScrubbing() {
   private void startScrubbing() {
     scrubbing = true;
     scrubbing = true;
     setPressed(true);
     setPressed(true);

library/ui/src/main/java/com/google/android/exoplayer2/ui/SimpleExoPlayerView.java

@@ -15,7 +15,6 @@
  */
  */
 package com.google.android.exoplayer2.ui;
 package com.google.android.exoplayer2.ui;
 
 
-import android.annotation.TargetApi;
 import android.content.Context;
 import android.content.Context;
 import android.support.annotation.NonNull;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.annotation.Nullable;
@@ -25,7 +24,6 @@ import com.google.android.exoplayer2.SimpleExoPlayer;
 
 
 /** @deprecated Use {@link PlayerView}. */
 /** @deprecated Use {@link PlayerView}. */
 @Deprecated
 @Deprecated
-@TargetApi(16)
 public final class SimpleExoPlayerView extends PlayerView {
 public final class SimpleExoPlayerView extends PlayerView {
 
 
   public SimpleExoPlayerView(Context context) {
   public SimpleExoPlayerView(Context context) {

library/ui/src/main/java/com/google/android/exoplayer2/ui/spherical/CanvasRenderer.java

@@ -18,7 +18,6 @@ package com.google.android.exoplayer2.ui.spherical;
 
 
 import static com.google.android.exoplayer2.util.GlUtil.checkGlError;
 import static com.google.android.exoplayer2.util.GlUtil.checkGlError;
 
 
-import android.annotation.TargetApi;
 import android.graphics.Canvas;
 import android.graphics.Canvas;
 import android.graphics.PointF;
 import android.graphics.PointF;
 import android.graphics.Rect;
 import android.graphics.Rect;
@@ -39,7 +38,6 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
  * <p>A CanvasRenderer can be created on any thread, but {@link #init()} needs to be called on the
  * <p>A CanvasRenderer can be created on any thread, but {@link #init()} needs to be called on the
  * GL thread before it can be rendered.
  * GL thread before it can be rendered.
  */
  */
-@TargetApi(15)
 public final class CanvasRenderer {
 public final class CanvasRenderer {
 
 
   private static final float WIDTH_UNIT = 0.8f;
   private static final float WIDTH_UNIT = 0.8f;

library/ui/src/main/java/com/google/android/exoplayer2/ui/spherical/ProjectionRenderer.java

@@ -17,7 +17,6 @@ package com.google.android.exoplayer2.ui.spherical;
 
 
 import static com.google.android.exoplayer2.util.GlUtil.checkGlError;
 import static com.google.android.exoplayer2.util.GlUtil.checkGlError;
 
 
-import android.annotation.TargetApi;
 import android.opengl.GLES11Ext;
 import android.opengl.GLES11Ext;
 import android.opengl.GLES20;
 import android.opengl.GLES20;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.C;
@@ -30,7 +29,6 @@ import org.checkerframework.checker.nullness.qual.Nullable;
  * Utility class to render spherical meshes for video or images. Call {@link #init()} on the GL
  * Utility class to render spherical meshes for video or images. Call {@link #init()} on the GL
  * thread when ready.
  * thread when ready.
  */
  */
-@TargetApi(15)
 /* package */ final class ProjectionRenderer {
 /* package */ final class ProjectionRenderer {
 
 
   /**
   /**

library/ui/src/main/java/com/google/android/exoplayer2/ui/spherical/SphericalSurfaceView.java

@@ -15,7 +15,6 @@
  */
  */
 package com.google.android.exoplayer2.ui.spherical;
 package com.google.android.exoplayer2.ui.spherical;
 
 
-import android.annotation.TargetApi;
 import android.content.Context;
 import android.content.Context;
 import android.graphics.PointF;
 import android.graphics.PointF;
 import android.graphics.SurfaceTexture;
 import android.graphics.SurfaceTexture;
@@ -52,7 +51,6 @@ import javax.microedition.khronos.opengles.GL10;
  * apply the touch and sensor rotations in the correct order or the user's touch manipulations won't
  * apply the touch and sensor rotations in the correct order or the user's touch manipulations won't
  * match what they expect.
  * match what they expect.
  */
  */
-@TargetApi(15)
 public final class SphericalSurfaceView extends GLSurfaceView {
 public final class SphericalSurfaceView extends GLSurfaceView {
 
 
   /**
   /**

playbacktests/src/androidTest/java/com/google/android/exoplayer2/playbacktests/gts/DashDownloadTest.java

@@ -89,10 +89,6 @@ public final class DashDownloadTest {
 
 
   @Test
   @Test
   public void testDownload() throws Exception {
   public void testDownload() throws Exception {
-    if (Util.SDK_INT < 16) {
-      return; // Pass.
-    }
-
     DashDownloader dashDownloader = downloadContent();
     DashDownloader dashDownloader = downloadContent();
     dashDownloader.download();
     dashDownloader.download();
 
 

playbacktests/src/androidTest/java/com/google/android/exoplayer2/playbacktests/gts/DashStreamingTest.java

@@ -103,10 +103,6 @@ public final class DashStreamingTest {
 
 
   @Test
   @Test
   public void testH264Fixed() {
   public void testH264Fixed() {
-    if (Util.SDK_INT < 16) {
-      // Pass.
-      return;
-    }
     testRunner
     testRunner
         .setStreamName("test_h264_fixed")
         .setStreamName("test_h264_fixed")
         .setManifestUrl(DashTestData.H264_MANIFEST)
         .setManifestUrl(DashTestData.H264_MANIFEST)
@@ -118,7 +114,7 @@ public final class DashStreamingTest {
 
 
   @Test
   @Test
   public void testH264Adaptive() throws DecoderQueryException {
   public void testH264Adaptive() throws DecoderQueryException {
-    if (Util.SDK_INT < 16 || shouldSkipAdaptiveTest(MimeTypes.VIDEO_H264)) {
+    if (shouldSkipAdaptiveTest(MimeTypes.VIDEO_H264)) {
       // Pass.
       // Pass.
       return;
       return;
     }
     }
@@ -134,7 +130,7 @@ public final class DashStreamingTest {
 
 
   @Test
   @Test
   public void testH264AdaptiveWithSeeking() throws DecoderQueryException {
   public void testH264AdaptiveWithSeeking() throws DecoderQueryException {
-    if (Util.SDK_INT < 16 || shouldSkipAdaptiveTest(MimeTypes.VIDEO_H264)) {
+    if (shouldSkipAdaptiveTest(MimeTypes.VIDEO_H264)) {
       // Pass.
       // Pass.
       return;
       return;
     }
     }
@@ -152,7 +148,7 @@ public final class DashStreamingTest {
 
 
   @Test
   @Test
   public void testH264AdaptiveWithRendererDisabling() throws DecoderQueryException {
   public void testH264AdaptiveWithRendererDisabling() throws DecoderQueryException {
-    if (Util.SDK_INT < 16 || shouldSkipAdaptiveTest(MimeTypes.VIDEO_H264)) {
+    if (shouldSkipAdaptiveTest(MimeTypes.VIDEO_H264)) {
       // Pass.
       // Pass.
       return;
       return;
     }
     }
@@ -633,10 +629,6 @@ public final class DashStreamingTest {
 
 
   @Test
   @Test
   public void testDecoderInfoH264() throws DecoderQueryException {
   public void testDecoderInfoH264() throws DecoderQueryException {
-    if (Util.SDK_INT < 16) {
-      // Pass.
-      return;
-    }
     MediaCodecInfo decoderInfo = MediaCodecUtil.getDecoderInfo(MimeTypes.VIDEO_H264, false);
     MediaCodecInfo decoderInfo = MediaCodecUtil.getDecoderInfo(MimeTypes.VIDEO_H264, false);
     assertThat(decoderInfo).isNotNull();
     assertThat(decoderInfo).isNotNull();
     assertThat(Util.SDK_INT < 21 || decoderInfo.adaptive).isTrue();
     assertThat(Util.SDK_INT < 21 || decoderInfo.adaptive).isTrue();

playbacktests/src/androidTest/java/com/google/android/exoplayer2/playbacktests/gts/DashTestRunner.java

@@ -205,7 +205,6 @@ public final class DashTestRunner {
   /**
   /**
    * A {@link HostedTest} for DASH playback tests.
    * A {@link HostedTest} for DASH playback tests.
    */
    */
-  @TargetApi(16)
   private static final class DashHostedTest extends ExoHostedTest {
   private static final class DashHostedTest extends ExoHostedTest {
 
 
     private final String streamName;
     private final String streamName;

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

@@ -39,7 +39,6 @@ import java.util.ArrayList;
  * A debug extension of {@link DefaultRenderersFactory}. Provides a video renderer that performs
  * A debug extension of {@link DefaultRenderersFactory}. Provides a video renderer that performs
  * video buffer timestamp assertions.
  * video buffer timestamp assertions.
  */
  */
-@TargetApi(16)
 public class DebugRenderersFactory extends DefaultRenderersFactory {
 public class DebugRenderersFactory extends DefaultRenderersFactory {
 
 
   public DebugRenderersFactory(Context context) {
   public DebugRenderersFactory(Context context) {