Remove unnecessary runtime API-level checks.

APIs below level 16 are not supported by WebRTC.

BUG=webrtc:7549
TBR=henrika@webrtc.org

Review-Url: https://codereview.webrtc.org/2848323003
Cr-Commit-Position: refs/heads/master@{#17980}

webrtc/examples/androidapp/src/org/appspot/apprtc/AppRTCProximitySensor.java

@@ -10,8 +10,6 @@
 
 package org.appspot.apprtc;
 
-import org.appspot.apprtc.util.AppRTCUtils;
-
 import android.content.Context;
 import android.hardware.Sensor;
 import android.hardware.SensorEvent;
@@ -19,7 +17,7 @@ import android.hardware.SensorEventListener;
 import android.hardware.SensorManager;
 import android.os.Build;
 import android.util.Log;
-
+import org.appspot.apprtc.util.AppRTCUtils;
 import org.webrtc.ThreadUtils;
 
 /**
@@ -149,10 +147,7 @@ public class AppRTCProximitySensor implements SensorEventListener {
     info.append(", power: ").append(proximitySensor.getPower());
     info.append(", resolution: ").append(proximitySensor.getResolution());
     info.append(", max range: ").append(proximitySensor.getMaximumRange());
-    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD) {
+    info.append(", min delay: ").append(proximitySensor.getMinDelay());
-      // Added in API level 9.
-      info.append(", min delay: ").append(proximitySensor.getMinDelay());
-    }
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH) {
       // Added in API level 20.
       info.append(", type: ").append(proximitySensor.getStringType());

webrtc/modules/audio_device/android/java/src/org/webrtc/voiceengine/WebRtcAudioEffects.java

@@ -10,8 +10,6 @@
 
 package org.webrtc.voiceengine;
 
-import org.webrtc.Logging;
-
 import android.annotation.TargetApi;
 import android.media.audiofx.AcousticEchoCanceler;
 import android.media.audiofx.AudioEffect;
@@ -19,9 +17,9 @@ import android.media.audiofx.AudioEffect.Descriptor;
 import android.media.audiofx.AutomaticGainControl;
 import android.media.audiofx.NoiseSuppressor;
 import android.os.Build;
-
 import java.util.List;
 import java.util.UUID;
+import org.webrtc.Logging;
 
 // This class wraps control of three different platform effects. Supported
 // effects are: AcousticEchoCanceler (AEC) and NoiseSuppressor (NS).
@@ -63,7 +61,7 @@ class WebRtcAudioEffects {
     // Note: we're using isAcousticEchoCancelerEffectAvailable() instead of
     // AcousticEchoCanceler.isAvailable() to avoid the expensive getEffects()
     // OS API call.
-    return WebRtcAudioUtils.runningOnJellyBeanOrHigher() && isAcousticEchoCancelerEffectAvailable();
+    return isAcousticEchoCancelerEffectAvailable();
   }
 
   // Checks if the device implements Noise Suppression (NS).
@@ -72,7 +70,7 @@ class WebRtcAudioEffects {
     // Note: we're using isNoiseSuppressorEffectAvailable() instead of
     // NoiseSuppressor.isAvailable() to avoid the expensive getEffects()
     // OS API call.
-    return WebRtcAudioUtils.runningOnJellyBeanOrHigher() && isNoiseSuppressorEffectAvailable();
+    return isNoiseSuppressorEffectAvailable();
   }
 
   // Returns true if the device is blacklisted for HW AEC usage.
@@ -153,11 +151,6 @@ class WebRtcAudioEffects {
   }
 
   static WebRtcAudioEffects create() {
-    // Return null if VoIP effects (AEC, AGC and NS) are not supported.
-    if (!WebRtcAudioUtils.runningOnJellyBeanOrHigher()) {
-      Logging.w(TAG, "API level 16 or higher is required!");
-      return null;
-    }
     return new WebRtcAudioEffects();
   }
 

webrtc/modules/audio_device/android/java/src/org/webrtc/voiceengine/WebRtcAudioManager.java

@@ -229,8 +229,7 @@ public class WebRtcAudioManager {
 
   // Returns true if low-latency audio output is supported.
   private boolean isLowLatencyOutputSupported() {
-    return isOpenSLESSupported()
+    return context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_AUDIO_LOW_LATENCY);
-        && context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_AUDIO_LOW_LATENCY);
   }
 
   // Returns true if low-latency audio input is supported.
@@ -341,12 +340,6 @@ public class WebRtcAudioManager {
         / bytesPerFrame;
   }
 
-  // Returns true if OpenSL ES audio is supported.
-  private static boolean isOpenSLESSupported() {
-    // Check for API level 9 or higher, to confirm use of OpenSL ES.
-    return WebRtcAudioUtils.runningOnGingerBreadOrHigher();
-  }
-
   // Helper method which throws an exception  when an assertion has failed.
   private static void assertTrue(boolean condition) {
     if (!condition) {

webrtc/modules/audio_device/android/java/src/org/webrtc/voiceengine/WebRtcAudioUtils.java

@@ -10,16 +10,14 @@
 
 package org.webrtc.voiceengine;
 
-import org.webrtc.Logging;
-
 import android.content.Context;
 import android.content.pm.PackageManager;
 import android.os.Build;
 import android.os.Process;
-
 import java.lang.Thread;
 import java.util.Arrays;
 import java.util.List;
+import org.webrtc.Logging;
 
 public final class WebRtcAudioUtils {
   private static final String TAG = "WebRtcAudioUtils";
@@ -129,16 +127,6 @@ public final class WebRtcAudioUtils {
     return Arrays.asList(WebRtcAudioUtils.BLACKLISTED_NS_MODELS);
   }
 
-  public static boolean runningOnGingerBreadOrHigher() {
-    // November 2010: Android 2.3, API Level 9.
-    return Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD;
-  }
-
-  public static boolean runningOnJellyBeanOrHigher() {
-    // June 2012: Android 4.1. API Level 16.
-    return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN;
-  }
-
   public static boolean runningOnJellyBeanMR1OrHigher() {
     // November 2012: Android 4.2. API Level 17.
     return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1;

webrtc/sdk/android/api/org/webrtc/SurfaceTextureHelper.java

@@ -17,7 +17,6 @@ import android.os.Build;
 import android.os.Handler;
 import android.os.HandlerThread;
 import android.os.SystemClock;
-
 import java.nio.ByteBuffer;
 import java.nio.FloatBuffer;
 import java.util.concurrent.Callable;
@@ -259,9 +258,7 @@ public class SurfaceTextureHelper {
 
     final float[] transformMatrix = new float[16];
     surfaceTexture.getTransformMatrix(transformMatrix);
-    final long timestampNs = (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH)
+    final long timestampNs = surfaceTexture.getTimestamp();
-        ? surfaceTexture.getTimestamp()
-        : TimeUnit.MILLISECONDS.toNanos(SystemClock.elapsedRealtime());
     listener.onTextureFrameAvailable(oesTextureId, transformMatrix, timestampNs);
   }