Allow to print Java stack traces in Android camera, renderer and media codec.

R=wzh@webrtc.org

Review URL: https://codereview.webrtc.org/1396873002 .

Cr-Commit-Position: refs/heads/master@{#10227}

talk/app/webrtc/java/android/org/webrtc/VideoCapturerAndroid.java

@@ -35,7 +35,6 @@ import android.opengl.EGLContext;
 import android.os.Handler;
 import android.os.HandlerThread;
 import android.os.SystemClock;
-import android.text.StaticLayout;
 import android.view.Surface;
 import android.view.WindowManager;
 
@@ -217,6 +216,18 @@ public class VideoCapturerAndroid extends VideoCapturer implements PreviewCallba
     return capturer;
   }
 
+  public void printStackTrace() {
+    if (cameraThread != null) {
+      StackTraceElement[] cameraStackTraces = cameraThread.getStackTrace();
+      if (cameraStackTraces.length > 0) {
+        Logging.d(TAG, "VideoCapturerAndroid stacks trace:");
+        for (StackTraceElement stackTrace : cameraStackTraces) {
+          Logging.d(TAG, stackTrace.toString());
+        }
+      }
+    }
+  }
+
   // Switch camera to the next valid camera id. This can only be called while
   // the camera is running.
   public void switchCamera(final CameraSwitchHandler handler) {

talk/app/webrtc/java/android/org/webrtc/VideoRendererGui.java

@@ -36,12 +36,10 @@ import javax.microedition.khronos.opengles.GL10;
 import android.annotation.SuppressLint;
 import android.graphics.Point;
 import android.graphics.Rect;
-import android.graphics.SurfaceTexture;
 import android.opengl.EGL14;
 import android.opengl.EGLContext;
 import android.opengl.GLES20;
 import android.opengl.GLSurfaceView;
-import android.opengl.Matrix;
 
 import org.webrtc.Logging;
 import org.webrtc.VideoRenderer.I420Frame;
@@ -77,6 +75,9 @@ public class VideoRendererGui implements GLSurfaceView.Renderer {
   // Current SDK version.
   private static final int CURRENT_SDK_VERSION =
       android.os.Build.VERSION.SDK_INT;
+  // Render and draw threads.
+  private static Thread renderFrameThread;
+  private static Thread drawThread;
 
   private VideoRendererGui(GLSurfaceView surface) {
     this.surface = surface;
@@ -372,6 +373,9 @@ public class VideoRendererGui implements GLSurfaceView.Renderer {
         VideoRenderer.renderFrameDone(frame);
         return;
       }
+      if (renderFrameThread == null) {
+        renderFrameThread = Thread.currentThread();
+      }
       if (!seenFrame && rendererEvents != null) {
         Logging.d(TAG, "ID: " + id + ". Reporting first rendered frame.");
         rendererEvents.onFirstFrameRendered();
@@ -394,6 +398,7 @@ public class VideoRendererGui implements GLSurfaceView.Renderer {
           // Skip rendering of this frame if previous frame was not rendered yet.
           framesDropped++;
           VideoRenderer.renderFrameDone(frame);
+          seenFrame = true;
           return;
         }
         pendingFrame = frame;
@@ -430,6 +435,8 @@ public class VideoRendererGui implements GLSurfaceView.Renderer {
       }
       instance.yuvImageRenderers.clear();
     }
+    renderFrameThread = null;
+    drawThread = null;
     instance.surface = null;
     eglContext = null;
     eglContextReady = null;
@@ -565,6 +572,26 @@ public class VideoRendererGui implements GLSurfaceView.Renderer {
     }
   }
 
+  private static void printStackTrace(Thread thread, String threadName) {
+    if (thread != null) {
+      StackTraceElement[] stackTraces = thread.getStackTrace();
+      if (stackTraces.length > 0) {
+        Logging.d(TAG, threadName + " stacks trace:");
+        for (StackTraceElement stackTrace : stackTraces) {
+          Logging.d(TAG, stackTrace.toString());
+        }
+      }
+    }
+  }
+
+  public static synchronized void printStackTraces() {
+    if (instance == null) {
+      return;
+    }
+    printStackTrace(renderFrameThread, "Render frame thread");
+    printStackTrace(drawThread, "Draw thread");
+  }
+
   @SuppressLint("NewApi")
   @Override
   public void onSurfaceCreated(GL10 unused, EGLConfig config) {
@@ -613,6 +640,9 @@ public class VideoRendererGui implements GLSurfaceView.Renderer {
 
   @Override
   public void onDrawFrame(GL10 unused) {
+    if (drawThread == null) {
+      drawThread = Thread.currentThread();
+    }
     GLES20.glViewport(0, 0, screenWidth, screenHeight);
     GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
     synchronized (yuvImageRenderers) {

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

@@ -32,9 +32,6 @@ 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;
 
@@ -65,7 +62,7 @@ public class MediaCodecVideoDecoder {
   }
 
   private static final int DEQUEUE_INPUT_TIMEOUT = 500000;  // 500 ms timeout.
-  private Thread mediaCodecThread;
+  private static Thread mediaCodecThread;
   private MediaCodec mediaCodec;
   private ByteBuffer[] inputBuffers;
   private ByteBuffer[] outputBuffers;
@@ -173,6 +170,18 @@ public class MediaCodecVideoDecoder {
     return findDecoder(H264_MIME_TYPE, supportedH264HwCodecPrefixes) != null;
   }
 
+  public static void printStackTrace() {
+    if (mediaCodecThread != null) {
+      StackTraceElement[] mediaCodecStackTraces = 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(

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

@@ -25,7 +25,6 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-
 package org.webrtc;
 
 import android.media.MediaCodec;
@@ -62,7 +61,7 @@ public class MediaCodecVideoEncoder {
   }
 
   private static final int DEQUEUE_TIMEOUT = 0;  // Non-blocking, no wait.
-  private Thread mediaCodecThread;
+  private static Thread mediaCodecThread;
   private MediaCodec mediaCodec;
   private ByteBuffer[] outputBuffers;
   private static final String VP8_MIME_TYPE = "video/x-vnd.on2.vp8";
@@ -197,6 +196,18 @@ public class MediaCodecVideoEncoder {
     }
   }
 
+  public static void printStackTrace() {
+    if (mediaCodecThread != null) {
+      StackTraceElement[] mediaCodecStackTraces = mediaCodecThread.getStackTrace();
+      if (mediaCodecStackTraces.length > 0) {
+        Logging.d(TAG, "MediaCodecVideoEncoder stacks trace:");
+        for (StackTraceElement stackTrace : mediaCodecStackTraces) {
+          Logging.d(TAG, stackTrace.toString());
+        }
+      }
+    }
+  }
+
   static MediaCodec createByCodecName(String codecName) {
     try {
       // In the L-SDK this call can throw IOException so in order to work in

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

@@ -148,19 +148,21 @@ public class PeerConnectionFactory {
     nativeThreadsCallbacks(nativeFactory);
   }
 
+  private static void printStackTrace(Thread thread, String threadName) {
+    if (thread != null) {
+      StackTraceElement[] stackTraces = thread.getStackTrace();
+      if (stackTraces.length > 0) {
+        Logging.d(TAG, threadName + " stacks trace:");
+        for (StackTraceElement stackTrace : stackTraces) {
+          Logging.d(TAG, stackTrace.toString());
+        }
+      }
+    }
+  }
+
   public static void printStackTraces() {
-    if (workerThread != null) {
-      Logging.d(TAG, "Worker thread stacks trace:");
-      for (StackTraceElement stackTrace : workerThread.getStackTrace()) {
-        Logging.d(TAG, stackTrace.toString());
-      }
-    }
-    if (signalingThread != null) {
-      Logging.d(TAG, "Signaling thread stacks trace:");
-      for (StackTraceElement stackTrace : signalingThread.getStackTrace()) {
-        Logging.d(TAG, stackTrace.toString());
-      }
-    }
+    printStackTrace(workerThread, "Worker thread");
+    printStackTrace(signalingThread, "Signaling thread");
   }
 
   private static void onWorkerThreadReady() {