Enable VP9 HW decoder on Exynos chips.

talk/app/webrtc/java/src/org/webrtc/MediaCodecVideoDecoder.java

 /*
  * libjingle
  * Copyright 2014 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 67 matching lines @@
   private ByteBuffer[] inputBuffers;
   private ByteBuffer[] outputBuffers;
   private static final String VP8_MIME_TYPE = "video/x-vnd.on2.vp8";
   private static final String VP9_MIME_TYPE = "video/x-vnd.on2.vp9";
   private static final String H264_MIME_TYPE = "video/avc";
   // List of supported HW VP8 decoders.
   private static final String[] supportedVp8HwCodecPrefixes =
     {"OMX.qcom.", "OMX.Nvidia.", "OMX.Exynos.", "OMX.Intel." };
   // List of supported HW VP9 decoders.
   private static final String[] supportedVp9HwCodecPrefixes =
-    {"OMX.qcom."};
+    {"OMX.qcom.", "OMX.Exynos." };
   // List of supported HW H.264 decoders.
   private static final String[] supportedH264HwCodecPrefixes =
     {"OMX.qcom.", "OMX.Intel." };
   // NV12 color format supported by QCOM codec, but not declared in MediaCodec -
   // see /hardware/qcom/media/mm-core/inc/OMX_QCOMExtns.h
   private static final int
     COLOR_QCOM_FORMATYUV420PackedSemiPlanar32m = 0x7FA30C04;
   // Allowable color formats supported by codec - in order of preference.
   private static final List<Integer> supportedColorList = Arrays.asList(
     CodecCapabilities.COLOR_FormatYUV420Planar,
@@ skipping 542 matching lines @@
   // MediaCodec.CodecException upon codec error.
   private void returnDecodedOutputBuffer(int index)
       throws IllegalStateException, MediaCodec.CodecException {
     checkOnMediaCodecThread();
     if (useSurface) {
       throw new IllegalStateException("returnDecodedOutputBuffer() called for surface decoding.");
     }
     mediaCodec.releaseOutputBuffer(index, false /* render */);
   }
 }