73 lines
2.5 KiB
Java
73 lines
2.5 KiB
Java
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/*
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* Copyright 2016 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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package org.webrtc;
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import android.content.Context;
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import android.graphics.Matrix;
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import android.view.WindowManager;
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import android.view.Surface;
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interface CameraSession {
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enum FailureType { ERROR, DISCONNECTED }
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// Callbacks are fired on the camera thread.
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interface CreateSessionCallback {
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void onDone(CameraSession session);
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void onFailure(FailureType failureType, String error);
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}
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// Events are fired on the camera thread.
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interface Events {
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void onCameraOpening();
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void onCameraError(CameraSession session, String error);
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void onCameraDisconnected(CameraSession session);
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void onCameraClosed(CameraSession session);
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void onFrameCaptured(CameraSession session, VideoFrame frame);
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}
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/**
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* Stops the capture. Waits until no more calls to capture observer will be made.
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* If waitCameraStop is true, also waits for the camera to stop.
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*/
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void stop();
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static int getDeviceOrientation(Context context) {
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final WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
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switch (wm.getDefaultDisplay().getRotation()) {
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case Surface.ROTATION_90:
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return 90;
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case Surface.ROTATION_180:
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return 180;
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case Surface.ROTATION_270:
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return 270;
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case Surface.ROTATION_0:
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default:
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return 0;
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}
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}
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static VideoFrame.TextureBuffer createTextureBufferWithModifiedTransformMatrix(
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TextureBufferImpl buffer, boolean mirror, int rotation) {
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final Matrix transformMatrix = new Matrix();
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// Perform mirror and rotation around (0.5, 0.5) since that is the center of the texture.
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transformMatrix.preTranslate(/* dx= */ 0.5f, /* dy= */ 0.5f);
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if (mirror) {
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transformMatrix.preScale(/* sx= */ -1f, /* sy= */ 1f);
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}
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transformMatrix.preRotate(rotation);
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transformMatrix.preTranslate(/* dx= */ -0.5f, /* dy= */ -0.5f);
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// The width and height are not affected by rotation since Camera2Session has set them to the
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// value they should be after undoing the rotation.
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return buffer.applyTransformMatrix(transformMatrix, buffer.getWidth(), buffer.getHeight());
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}
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}
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