Work around broken AAC decoder.

Issue: #1528
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=122421357

library/src/main/java/com/google/android/exoplayer/MediaCodecUtil.java

@@ -195,9 +195,15 @@ public final class MediaCodecUtil {
             || "MP3Decoder".equals(name)) {
             || "MP3Decoder".equals(name)) {
       return false;
       return false;
     }
     }
+    // Work around https://github.com/google/ExoPlayer/issues/398
     if (Util.SDK_INT < 18 && "OMX.SEC.MP3.Decoder".equals(name)) {
     if (Util.SDK_INT < 18 && "OMX.SEC.MP3.Decoder".equals(name)) {
       return false;
       return false;
     }
     }
+    // Work around https://github.com/google/ExoPlayer/issues/1528
+    if (Util.SDK_INT < 18 && "OMX.MTK.AUDIO.DECODER.AAC".equals(name)
+        && "a70".equals(Util.DEVICE)) {
+      return false;
+    }
 
 
     // Work around an issue where creating a particular MP3 decoder on some devices on platform API
     // Work around an issue where creating a particular MP3 decoder on some devices on platform API
     // version 16 crashes mediaserver.
     // version 16 crashes mediaserver.