Add option to print peer connection factory Java stack traces.

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 14 matching lines @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 package org.webrtc;
 
 import android.media.MediaCodec;
 import android.media.MediaCodecInfo;
 import android.media.MediaCodecInfo.CodecCapabilities;
 import android.media.MediaCodecList;
 import android.media.MediaFormat;
-import android.opengl.EGLContext;
-import android.opengl.GLES11Ext;
-import android.opengl.GLES20;
 import android.os.Build;
 import android.view.Surface;
 
 import org.webrtc.Logging;
 
 import java.nio.ByteBuffer;
 import java.util.Arrays;
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 
@@ skipping 10 matching lines @@
   private static final String TAG = "MediaCodecVideoDecoder";
 
   // Tracks webrtc::VideoCodecType.
   public enum VideoCodecType {
     VIDEO_CODEC_VP8,
     VIDEO_CODEC_VP9,
     VIDEO_CODEC_H264
   }
 
   private static final int DEQUEUE_INPUT_TIMEOUT = 500000;  // 500 ms timeout.
+  private static MediaCodecVideoDecoder instance;
   private Thread mediaCodecThread;
   private MediaCodec mediaCodec;
   private ByteBuffer[] inputBuffers;
   private ByteBuffer[] outputBuffers;
   private static final String VP8_MIME_TYPE = "video/x-vnd.on2.vp8";
   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 H.264 decoders.
@@ skipping 15 matching lines @@
   private int stride;
   private int sliceHeight;
   private boolean useSurface;
   // |isWaitingForTexture| is true when waiting for the transition:
   // MediaCodec.releaseOutputBuffer() -> onTextureFrameAvailable().
   private boolean isWaitingForTexture = false;
   private TextureListener textureListener;
   private Surface surface = null;
 
   private MediaCodecVideoDecoder() {
-    mediaCodecThread = null;
+    instance = this;
   }
 
   // Helper struct for findVp8Decoder() below.
   private static class DecoderProperties {
     public DecoderProperties(String codecName, int colorFormat) {
       this.codecName = codecName;
       this.colorFormat = colorFormat;
     }
     public final String codecName; // OpenMax component name for VP8 codec.
     public final int colorFormat;  // Color format supported by codec.
@@ skipping 54 matching lines @@
   }
 
   public static boolean isVp8HwSupported() {
     return findDecoder(VP8_MIME_TYPE, supportedVp8HwCodecPrefixes) != null;
   }
 
   public static boolean isH264HwSupported() {
     return findDecoder(H264_MIME_TYPE, supportedH264HwCodecPrefixes) != null;
   }
 
+  public static void printStackTrace() {
+    if (instance != null && instance.mediaCodecThread != null) {
+      StackTraceElement[] mediaCodecStackTraces = instance.mediaCodecThread.getStackTrace();
+      if (mediaCodecStackTraces.length > 0) {
+        Logging.d(TAG, "MediaCodecVideoDecoder stacks trace:");
+        for (StackTraceElement stackTrace : mediaCodecStackTraces) {
+          Logging.d(TAG, stackTrace.toString());
+        }
+      }
+    }
+  }
+
   private void checkOnMediaCodecThread() throws IllegalStateException {
     if (mediaCodecThread.getId() != Thread.currentThread().getId()) {
       throw new IllegalStateException(
           "MediaCodecVideoDecoder previously operated on " + mediaCodecThread +
           " but is now called on " + Thread.currentThread());
     }
   }
 
   // Pass null in |surfaceTextureHelper| to configure the codec for ByteBuffer output.
   private boolean initDecode(
@@ skipping 33 matching lines @@
       }
 
       MediaFormat format = MediaFormat.createVideoFormat(mime, width, height);
       if (!useSurface) {
         format.setInteger(MediaFormat.KEY_COLOR_FORMAT, properties.colorFormat);
       }
       Logging.d(TAG, "  Format: " + format);
       mediaCodec =
           MediaCodecVideoEncoder.createByCodecName(properties.codecName);
       if (mediaCodec == null) {
+        Logging.e(TAG, "Can not create media decoder");
         return false;
       }
       mediaCodec.configure(format, surface, null, 0);
       mediaCodec.start();
       colorFormat = properties.colorFormat;
       outputBuffers = mediaCodec.getOutputBuffers();
       inputBuffers = mediaCodec.getInputBuffers();
       Logging.d(TAG, "Input buffers: " + inputBuffers.length +
           ". Output buffers: " + outputBuffers.length);
       return true;
     } catch (IllegalStateException e) {
       Logging.e(TAG, "initDecode failed", e);
       return false;
     }
   }
 
   private void release() {
     Logging.d(TAG, "Java releaseDecoder");
     checkOnMediaCodecThread();
     try {
       mediaCodec.stop();
       mediaCodec.release();
     } catch (IllegalStateException e) {
       Logging.e(TAG, "release failed", e);
     }
     mediaCodec = null;
     mediaCodecThread = null;
+    instance = null;
     if (useSurface) {
       surface.release();
       surface = null;
       textureListener.release();
     }
+    Logging.d(TAG, "Java releaseDecoder done");
   }
 
   // Dequeue an input buffer and return its index, -1 if no input buffer is
   // available, or -2 if the codec is no longer operative.
   private int dequeueInputBuffer() {
     checkOnMediaCodecThread();
     try {
       return mediaCodec.dequeueInputBuffer(DEQUEUE_INPUT_TIMEOUT);
     } catch (IllegalStateException e) {
       Logging.e(TAG, "dequeueIntputBuffer failed", e);
@@ skipping 177 matching lines @@
   // MediaCodec.CodecException upon codec error.
   private void returnDecodedByteBuffer(int index)
       throws IllegalStateException, MediaCodec.CodecException {
     checkOnMediaCodecThread();
     if (useSurface) {
       throw new IllegalStateException("returnDecodedByteBuffer() called for surface decoding.");
     }
     mediaCodec.releaseOutputBuffer(index, false /* render */);
   }
 }