1 files changed, 249 insertions, 0 deletions
diff --git a/java/com/android/incallui/videosurface/impl/VideoSurfaceTextureImpl.java b/java/com/android/incallui/videosurface/impl/VideoSurfaceTextureImpl.java
new file mode 100644
index 000000000..21160cadb
--- /dev/null
+++ b/java/com/android/incallui/videosurface/impl/VideoSurfaceTextureImpl.java
@@ -0,0 +1,249 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.android.incallui.videosurface.impl;
+
+import android.graphics.Point;
+import android.graphics.SurfaceTexture;
+import android.view.Surface;
+import android.view.TextureView;
+import android.view.View;
+import com.android.dialer.common.LogUtil;
+import com.android.incallui.videosurface.protocol.VideoSurfaceDelegate;
+import com.android.incallui.videosurface.protocol.VideoSurfaceTexture;
+import java.util.Locale;
+import java.util.Objects;
+
+/**
+ * Represents a {@link TextureView} and its associated {@link SurfaceTexture} and {@link Surface}.
+ * Used to manage the lifecycle of these objects across device orientation changes.
+ */
+public class VideoSurfaceTextureImpl implements VideoSurfaceTexture {
+  @SurfaceType private final int surfaceType;
+  private VideoSurfaceDelegate delegate;
+  private TextureView textureView;
+  private Surface savedSurface;
+  private SurfaceTexture savedSurfaceTexture;
+  private Point surfaceDimensions;
+  private Point sourceVideoDimensions;
+  private boolean isDoneWithSurface;
+
+  public VideoSurfaceTextureImpl(@SurfaceType int surfaceType) {
+    this.surfaceType = surfaceType;
+  }
+
+  @Override
+  public void setDelegate(VideoSurfaceDelegate delegate) {
+    LogUtil.i("VideoSurfaceTextureImpl.setDelegate", "delegate: " + delegate + " " + toString());
+    this.delegate = delegate;
+  }
+
+  @Override
+  public int getSurfaceType() {
+    return surfaceType;
+  }
+
+  @Override
+  public Surface getSavedSurface() {
+    return savedSurface;
+  }
+
+  @Override
+  public void setSurfaceDimensions(Point surfaceDimensions) {
+    LogUtil.i(
+        "VideoSurfaceTextureImpl.setSurfaceDimensions",
+        "surfaceDimensions: " + surfaceDimensions + " " + toString());
+    this.surfaceDimensions = surfaceDimensions;
+    if (surfaceDimensions != null && savedSurfaceTexture != null) {
+      savedSurfaceTexture.setDefaultBufferSize(surfaceDimensions.x, surfaceDimensions.y);
+    }
+  }
+
+  @Override
+  public Point getSurfaceDimensions() {
+    return surfaceDimensions;
+  }
+
+  @Override
+  public void setSourceVideoDimensions(Point sourceVideoDimensions) {
+    this.sourceVideoDimensions = sourceVideoDimensions;
+  }
+
+  @Override
+  public Point getSourceVideoDimensions() {
+    return sourceVideoDimensions;
+  }
+
+  @Override
+  public void attachToTextureView(TextureView textureView) {
+    if (this.textureView == textureView) {
+      return;
+    }
+    LogUtil.i("VideoSurfaceTextureImpl.attachToTextureView", toString());
+
+    if (this.textureView != null) {
+      this.textureView.setOnClickListener(null);
+      // Don't clear the surface texture listener. This is important because our listener prevents
+      // the surface from being released so that it can be reused later.
+    }
+
+    this.textureView = textureView;
+    textureView.setSurfaceTextureListener(new SurfaceTextureListener());
+    textureView.setOnClickListener(new OnClickListener());
+
+    boolean areSameSurfaces = Objects.equals(savedSurfaceTexture, textureView.getSurfaceTexture());
+    LogUtil.i("VideoSurfaceTextureImpl.attachToTextureView", "areSameSurfaces: " + areSameSurfaces);
+    if (savedSurfaceTexture != null && !areSameSurfaces) {
+      textureView.setSurfaceTexture(savedSurfaceTexture);
+      if (surfaceDimensions != null && createSurface(surfaceDimensions.x, surfaceDimensions.y)) {
+        onSurfaceCreated();
+      }
+    }
+    isDoneWithSurface = false;
+  }
+
+  @Override
+  public void setDoneWithSurface() {
+    LogUtil.i("VideoSurfaceTextureImpl.setDoneWithSurface", toString());
+    isDoneWithSurface = true;
+    if (textureView != null && textureView.isAvailable()) {
+      return;
+    }
+    if (savedSurface != null) {
+      onSurfaceReleased();
+      savedSurface.release();
+      savedSurface = null;
+    }
+    if (savedSurfaceTexture != null) {
+      savedSurfaceTexture.release();
+      savedSurfaceTexture = null;
+    }
+  }
+
+  private boolean createSurface(int width, int height) {
+    LogUtil.i(
+        "VideoSurfaceTextureImpl.createSurface",
+        "width: " + width + ", height: " + height + " " + toString());
+    if (savedSurfaceTexture != null) {
+      savedSurfaceTexture.setDefaultBufferSize(width, height);
+      savedSurface = new Surface(savedSurfaceTexture);
+      return true;
+    }
+    return false;
+  }
+
+  private void onSurfaceCreated() {
+    if (delegate != null) {
+      delegate.onSurfaceCreated(this);
+    } else {
+      LogUtil.e("VideoSurfaceTextureImpl.onSurfaceCreated", "delegate is null. " + toString());
+    }
+  }
+
+  private void onSurfaceReleased() {
+    if (delegate != null) {
+      delegate.onSurfaceReleased(this);
+    } else {
+      LogUtil.e("VideoSurfaceTextureImpl.onSurfaceReleased", "delegate is null. " + toString());
+    }
+  }
+
+  @Override
+  public String toString() {
+    return String.format(
+        Locale.US,
+        "VideoSurfaceTextureImpl<%s%s%s%s>",
+        (surfaceType == SURFACE_TYPE_LOCAL ? "local, " : "remote, "),
+        (savedSurface == null ? "no-surface, " : ""),
+        (savedSurfaceTexture == null ? "no-texture, " : ""),
+        (surfaceDimensions == null
+            ? "(-1 x -1)"
+            : (surfaceDimensions.x + " x " + surfaceDimensions.y)));
+  }
+
+  private class SurfaceTextureListener implements TextureView.SurfaceTextureListener {
+    @Override
+    public void onSurfaceTextureAvailable(SurfaceTexture newSurfaceTexture, int width, int height) {
+      LogUtil.i(
+          "SurfaceTextureListener.onSurfaceTextureAvailable",
+          "newSurfaceTexture: "
+              + newSurfaceTexture
+              + " "
+              + VideoSurfaceTextureImpl.this.toString());
+
+      // Where there is no saved {@link SurfaceTexture} available, use the newly created one.
+      // If a saved {@link SurfaceTexture} is available, we are re-creating after an
+      // orientation change.
+      boolean surfaceCreated;
+      if (savedSurfaceTexture == null) {
+        savedSurfaceTexture = newSurfaceTexture;
+        surfaceCreated = createSurface(width, height);
+      } else {
+        // A saved SurfaceTexture was found.
+        LogUtil.i(
+            "SurfaceTextureListener.onSurfaceTextureAvailable", "replacing with cached surface...");
+        textureView.setSurfaceTexture(savedSurfaceTexture);
+        surfaceCreated = true;
+      }
+
+      // Inform the delegate that the surface is available.
+      if (surfaceCreated) {
+        onSurfaceCreated();
+      }
+    }
+
+    @Override
+    public boolean onSurfaceTextureDestroyed(SurfaceTexture destroyedSurfaceTexture) {
+      LogUtil.i(
+          "SurfaceTextureListener.onSurfaceTextureDestroyed",
+          "destroyedSurfaceTexture: "
+              + destroyedSurfaceTexture
+              + " "
+              + VideoSurfaceTextureImpl.this.toString());
+      if (delegate != null) {
+        delegate.onSurfaceDestroyed(VideoSurfaceTextureImpl.this);
+      } else {
+        LogUtil.e("SurfaceTextureListener.onSurfaceTextureDestroyed", "delegate is null");
+      }
+
+      if (isDoneWithSurface) {
+        onSurfaceReleased();
+        if (savedSurface != null) {
+          savedSurface.release();
+          savedSurface = null;
+        }
+      }
+      return isDoneWithSurface;
+    }
+
+    @Override
+    public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {}
+
+    @Override
+    public void onSurfaceTextureUpdated(SurfaceTexture surface) {}
+  }
+
+  private class OnClickListener implements View.OnClickListener {
+    @Override
+    public void onClick(View view) {
+      if (delegate != null) {
+        delegate.onSurfaceClick(VideoSurfaceTextureImpl.this);
+      } else {
+        LogUtil.e("OnClickListener.onClick", "delegate is null");
+      }
+    }
+  }
+}