| /* |
| * 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()); |
| } |
| } |