1 files changed, 72 insertions, 0 deletions
diff --git a/third_party/libwebrtc/sdk/android/src/java/org/webrtc/CameraSession.java b/third_party/libwebrtc/sdk/android/src/java/org/webrtc/CameraSession.java
new file mode 100644
index 0000000000..8d137854d8
--- /dev/null
+++ b/third_party/libwebrtc/sdk/android/src/java/org/webrtc/CameraSession.java
@@ -0,0 +1,72 @@
+/*
+ *  Copyright 2016 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.content.Context;
+import android.graphics.Matrix;
+import android.view.WindowManager;
+import android.view.Surface;
+
+interface CameraSession {
+  enum FailureType { ERROR, DISCONNECTED }
+
+  // Callbacks are fired on the camera thread.
+  interface CreateSessionCallback {
+    void onDone(CameraSession session);
+    void onFailure(FailureType failureType, String error);
+  }
+
+  // Events are fired on the camera thread.
+  interface Events {
+    void onCameraOpening();
+    void onCameraError(CameraSession session, String error);
+    void onCameraDisconnected(CameraSession session);
+    void onCameraClosed(CameraSession session);
+    void onFrameCaptured(CameraSession session, VideoFrame frame);
+  }
+
+  /**
+   * Stops the capture. Waits until no more calls to capture observer will be made.
+   * If waitCameraStop is true, also waits for the camera to stop.
+   */
+  void stop();
+
+  static int getDeviceOrientation(Context context) {
+    final WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+    switch (wm.getDefaultDisplay().getRotation()) {
+      case Surface.ROTATION_90:
+        return 90;
+      case Surface.ROTATION_180:
+        return 180;
+      case Surface.ROTATION_270:
+        return 270;
+      case Surface.ROTATION_0:
+      default:
+        return 0;
+    }
+  }
+
+  static VideoFrame.TextureBuffer createTextureBufferWithModifiedTransformMatrix(
+      TextureBufferImpl buffer, boolean mirror, int rotation) {
+    final Matrix transformMatrix = new Matrix();
+    // Perform mirror and rotation around (0.5, 0.5) since that is the center of the texture.
+    transformMatrix.preTranslate(/* dx= */ 0.5f, /* dy= */ 0.5f);
+    if (mirror) {
+      transformMatrix.preScale(/* sx= */ -1f, /* sy= */ 1f);
+    }
+    transformMatrix.preRotate(rotation);
+    transformMatrix.preTranslate(/* dx= */ -0.5f, /* dy= */ -0.5f);
+
+    // The width and height are not affected by rotation since Camera2Session has set them to the
+    // value they should be after undoing the rotation.
+    return buffer.applyTransformMatrix(transformMatrix, buffer.getWidth(), buffer.getHeight());
+  }
+}