Move /webrtc/api/android files to /webrtc/sdk/android

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

Index: webrtc/api/android/java/src/org/webrtc/SurfaceTextureHelper.java
diff --git a/webrtc/api/android/java/src/org/webrtc/SurfaceTextureHelper.java b/webrtc/api/android/java/src/org/webrtc/SurfaceTextureHelper.java
deleted file mode 100644
index c4de0da859d1b48c343ad068f188eaa2d678fd09..0000000000000000000000000000000000000000
--- a/webrtc/api/android/java/src/org/webrtc/SurfaceTextureHelper.java
+++ /dev/null
@@ -1,283 +0,0 @@
-/*
- *  Copyright 2015 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-package org.webrtc;
-
-import android.graphics.SurfaceTexture;
-import android.opengl.GLES11Ext;
-import android.opengl.GLES20;
-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;
-import java.util.concurrent.TimeUnit;
-
-/**
- * Helper class to create and synchronize access to a SurfaceTexture. The caller will get notified
- * of new frames in onTextureFrameAvailable(), and should call returnTextureFrame() when done with
- * the frame. Only one texture frame can be in flight at once, so returnTextureFrame() must be
- * called in order to receive a new frame. Call stopListening() to stop receiveing new frames. Call
- * dispose to release all resources once the texture frame is returned.
- * Note that there is a C++ counter part of this class that optionally can be used. It is used for
- * wrapping texture frames into webrtc::VideoFrames and also handles calling returnTextureFrame()
- * when the webrtc::VideoFrame is no longer used.
- */
-public class SurfaceTextureHelper {
-  private static final String TAG = "SurfaceTextureHelper";
-  /**
-   * Callback interface for being notified that a new texture frame is available. The calls will be
-   * made on a dedicated thread with a bound EGLContext. The thread will be the same throughout the
-   * lifetime of the SurfaceTextureHelper instance, but different from the thread calling the
-   * SurfaceTextureHelper constructor. The callee is not allowed to make another EGLContext current
-   * on the calling thread.
-   */
-  public interface OnTextureFrameAvailableListener {
-    abstract void onTextureFrameAvailable(
-        int oesTextureId, float[] transformMatrix, long timestampNs);
-  }
-
-  /**
-   * Construct a new SurfaceTextureHelper sharing OpenGL resources with |sharedContext|. A dedicated
-   * thread and handler is created for handling the SurfaceTexture. May return null if EGL fails to
-   * initialize a pixel buffer surface and make it current.
-   */
-  public static SurfaceTextureHelper create(
-      final String threadName, final EglBase.Context sharedContext) {
-    final HandlerThread thread = new HandlerThread(threadName);
-    thread.start();
-    final Handler handler = new Handler(thread.getLooper());
-
-    // The onFrameAvailable() callback will be executed on the SurfaceTexture ctor thread. See:
-    // http://grepcode.com/file/repository.grepcode.com/java/ext/com.google.android/android/5.1.1_r1/android/graphics/SurfaceTexture.java#195.
-    // Therefore, in order to control the callback thread on API lvl < 21, the SurfaceTextureHelper
-    // is constructed on the |handler| thread.
-    return ThreadUtils.invokeAtFrontUninterruptibly(handler, new Callable<SurfaceTextureHelper>() {
-      @Override
-      public SurfaceTextureHelper call() {
-        try {
-          return new SurfaceTextureHelper(sharedContext, handler);
-        } catch (RuntimeException e) {
-          Logging.e(TAG, threadName + " create failure", e);
-          return null;
-        }
-      }
-    });
-  }
-
-  private final Handler handler;
-  private final EglBase eglBase;
-  private final SurfaceTexture surfaceTexture;
-  private final int oesTextureId;
-  private YuvConverter yuvConverter;
-
-  // These variables are only accessed from the |handler| thread.
-  private OnTextureFrameAvailableListener listener;
-  // The possible states of this class.
-  private boolean hasPendingTexture = false;
-  private volatile boolean isTextureInUse = false;
-  private boolean isQuitting = false;
-  // |pendingListener| is set in setListener() and the runnable is posted to the handler thread.
-  // setListener() is not allowed to be called again before stopListening(), so this is thread safe.
-  private OnTextureFrameAvailableListener pendingListener;
-  final Runnable setListenerRunnable = new Runnable() {
-    @Override
-    public void run() {
-      Logging.d(TAG, "Setting listener to " + pendingListener);
-      listener = pendingListener;
-      pendingListener = null;
-      // May have a pending frame from the previous capture session - drop it.
-      if (hasPendingTexture) {
-        // Calling updateTexImage() is neccessary in order to receive new frames.
-        updateTexImage();
-        hasPendingTexture = false;
-      }
-    }
-  };
-
-  private SurfaceTextureHelper(EglBase.Context sharedContext, Handler handler) {
-    if (handler.getLooper().getThread() != Thread.currentThread()) {
-      throw new IllegalStateException("SurfaceTextureHelper must be created on the handler thread");
-    }
-    this.handler = handler;
-
-    eglBase = EglBase.create(sharedContext, EglBase.CONFIG_PIXEL_BUFFER);
-    try {
-      // Both these statements have been observed to fail on rare occasions, see BUG=webrtc:5682.
-      eglBase.createDummyPbufferSurface();
-      eglBase.makeCurrent();
-    } catch (RuntimeException e) {
-      // Clean up before rethrowing the exception.
-      eglBase.release();
-      handler.getLooper().quit();
-      throw e;
-    }
-
-    oesTextureId = GlUtil.generateTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES);
-    surfaceTexture = new SurfaceTexture(oesTextureId);
-    surfaceTexture.setOnFrameAvailableListener(new SurfaceTexture.OnFrameAvailableListener() {
-      @Override
-      public void onFrameAvailable(SurfaceTexture surfaceTexture) {
-        hasPendingTexture = true;
-        tryDeliverTextureFrame();
-      }
-    });
-  }
-
-  /**
-   * Start to stream textures to the given |listener|. If you need to change listener, you need to
-   * call stopListening() first.
-   */
-  public void startListening(final OnTextureFrameAvailableListener listener) {
-    if (this.listener != null || this.pendingListener != null) {
-      throw new IllegalStateException("SurfaceTextureHelper listener has already been set.");
-    }
-    this.pendingListener = listener;
-    handler.post(setListenerRunnable);
-  }
-
-  /**
-   * Stop listening. The listener set in startListening() is guaranteded to not receive any more
-   * onTextureFrameAvailable() callbacks after this function returns.
-   */
-  public void stopListening() {
-    Logging.d(TAG, "stopListening()");
-    handler.removeCallbacks(setListenerRunnable);
-    ThreadUtils.invokeAtFrontUninterruptibly(handler, new Runnable() {
-      @Override
-      public void run() {
-        listener = null;
-        pendingListener = null;
-      }
-    });
-  }
-
-  /**
-   * Retrieve the underlying SurfaceTexture. The SurfaceTexture should be passed in to a video
-   * producer such as a camera or decoder.
-   */
-  public SurfaceTexture getSurfaceTexture() {
-    return surfaceTexture;
-  }
-
-  /**
-   * Retrieve the handler that calls onTextureFrameAvailable(). This handler is valid until
-   * dispose() is called.
-   */
-  public Handler getHandler() {
-    return handler;
-  }
-
-  /**
-   * Call this function to signal that you are done with the frame received in
-   * onTextureFrameAvailable(). Only one texture frame can be in flight at once, so you must call
-   * this function in order to receive a new frame.
-   */
-  public void returnTextureFrame() {
-    handler.post(new Runnable() {
-      @Override
-      public void run() {
-        isTextureInUse = false;
-        if (isQuitting) {
-          release();
-        } else {
-          tryDeliverTextureFrame();
-        }
-      }
-    });
-  }
-
-  public boolean isTextureInUse() {
-    return isTextureInUse;
-  }
-
-  /**
-   * Call disconnect() to stop receiving frames. OpenGL resources are released and the handler is
-   * stopped when the texture frame has been returned by a call to returnTextureFrame(). You are
-   * guaranteed to not receive any more onTextureFrameAvailable() after this function returns.
-   */
-  public void dispose() {
-    Logging.d(TAG, "dispose()");
-    ThreadUtils.invokeAtFrontUninterruptibly(handler, new Runnable() {
-      @Override
-      public void run() {
-        isQuitting = true;
-        if (!isTextureInUse) {
-          release();
-        }
-      }
-    });
-  }
-
-  public void textureToYUV(final ByteBuffer buf, final int width, final int height,
-      final int stride, final int textureId, final float[] transformMatrix) {
-    if (textureId != oesTextureId) {
-      throw new IllegalStateException("textureToByteBuffer called with unexpected textureId");
-    }
-
-    ThreadUtils.invokeAtFrontUninterruptibly(handler, new Runnable() {
-      @Override
-      public void run() {
-        if (yuvConverter == null) {
-          yuvConverter = new YuvConverter();
-        }
-        yuvConverter.convert(buf, width, height, stride, textureId, transformMatrix);
-      }
-    });
-  }
-
-  private void updateTexImage() {
-    // SurfaceTexture.updateTexImage apparently can compete and deadlock with eglSwapBuffers,
-    // as observed on Nexus 5. Therefore, synchronize it with the EGL functions.
-    // See https://bugs.chromium.org/p/webrtc/issues/detail?id=5702 for more info.
-    synchronized (EglBase.lock) {
-      surfaceTexture.updateTexImage();
-    }
-  }
-
-  private void tryDeliverTextureFrame() {
-    if (handler.getLooper().getThread() != Thread.currentThread()) {
-      throw new IllegalStateException("Wrong thread.");
-    }
-    if (isQuitting || !hasPendingTexture || isTextureInUse || listener == null) {
-      return;
-    }
-    isTextureInUse = true;
-    hasPendingTexture = false;
-
-    updateTexImage();
-
-    final float[] transformMatrix = new float[16];
-    surfaceTexture.getTransformMatrix(transformMatrix);
-    final long timestampNs = (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH)
-        ? surfaceTexture.getTimestamp()
-        : TimeUnit.MILLISECONDS.toNanos(SystemClock.elapsedRealtime());
-    listener.onTextureFrameAvailable(oesTextureId, transformMatrix, timestampNs);
-  }
-
-  private void release() {
-    if (handler.getLooper().getThread() != Thread.currentThread()) {
-      throw new IllegalStateException("Wrong thread.");
-    }
-    if (isTextureInUse || !isQuitting) {
-      throw new IllegalStateException("Unexpected release.");
-    }
-    if (yuvConverter != null) {
-      yuvConverter.release();
-    }
-    GLES20.glDeleteTextures(1, new int[] {oesTextureId}, 0);
-    surfaceTexture.release();
-    eglBase.release();
-    handler.getLooper().quit();
-  }
-}