mirror of https://github.com/NekoX-Dev/NekoX.git
186 lines
7.1 KiB
Java
186 lines
7.1 KiB
Java
/*
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* Copyright 2015 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.os.SystemClock;
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import androidx.annotation.Nullable;
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import java.util.ArrayList;
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import java.util.List;
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import org.webrtc.CameraEnumerationAndroid.CaptureFormat;
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@SuppressWarnings("deprecation")
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public class Camera1Enumerator implements CameraEnumerator {
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private final static String TAG = "Camera1Enumerator";
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// Each entry contains the supported formats for corresponding camera index. The formats for all
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// cameras are enumerated on the first call to getSupportedFormats(), and cached for future
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// reference.
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private static List<List<CaptureFormat>> cachedSupportedFormats;
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private final boolean captureToTexture;
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public Camera1Enumerator() {
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this(true /* captureToTexture */);
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}
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public Camera1Enumerator(boolean captureToTexture) {
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this.captureToTexture = captureToTexture;
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}
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// Returns device names that can be used to create a new VideoCapturerAndroid.
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@Override
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public String[] getDeviceNames() {
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ArrayList<String> namesList = new ArrayList<>();
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for (int i = 0; i < android.hardware.Camera.getNumberOfCameras(); ++i) {
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String name = getDeviceName(i);
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if (name != null) {
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namesList.add(name);
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Logging.d(TAG, "Index: " + i + ". " + name);
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} else {
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Logging.e(TAG, "Index: " + i + ". Failed to query camera name.");
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}
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}
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String[] namesArray = new String[namesList.size()];
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return namesList.toArray(namesArray);
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}
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@Override
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public boolean isFrontFacing(String deviceName) {
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android.hardware.Camera.CameraInfo info = getCameraInfo(getCameraIndex(deviceName));
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return info != null && info.facing == android.hardware.Camera.CameraInfo.CAMERA_FACING_FRONT;
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}
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@Override
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public boolean isBackFacing(String deviceName) {
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android.hardware.Camera.CameraInfo info = getCameraInfo(getCameraIndex(deviceName));
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return info != null && info.facing == android.hardware.Camera.CameraInfo.CAMERA_FACING_BACK;
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}
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@Override
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public List<CaptureFormat> getSupportedFormats(String deviceName) {
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return getSupportedFormats(getCameraIndex(deviceName));
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}
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@Override
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public CameraVideoCapturer createCapturer(
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String deviceName, CameraVideoCapturer.CameraEventsHandler eventsHandler) {
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return new Camera1Capturer(deviceName, eventsHandler, captureToTexture);
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}
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private static @Nullable android.hardware.Camera.CameraInfo getCameraInfo(int index) {
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android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo();
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try {
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android.hardware.Camera.getCameraInfo(index, info);
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} catch (Exception e) {
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Logging.e(TAG, "getCameraInfo failed on index " + index, e);
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return null;
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}
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return info;
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}
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static synchronized List<CaptureFormat> getSupportedFormats(int cameraId) {
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if (cachedSupportedFormats == null) {
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cachedSupportedFormats = new ArrayList<List<CaptureFormat>>();
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for (int i = 0; i < android.hardware.Camera.getNumberOfCameras(); ++i) {
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cachedSupportedFormats.add(enumerateFormats(i));
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}
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}
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return cachedSupportedFormats.get(cameraId);
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}
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private static List<CaptureFormat> enumerateFormats(int cameraId) {
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Logging.d(TAG, "Get supported formats for camera index " + cameraId + ".");
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final long startTimeMs = SystemClock.elapsedRealtime();
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final android.hardware.Camera.Parameters parameters;
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android.hardware.Camera camera = null;
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try {
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Logging.d(TAG, "Opening camera with index " + cameraId);
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camera = android.hardware.Camera.open(cameraId);
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parameters = camera.getParameters();
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} catch (RuntimeException e) {
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Logging.e(TAG, "Open camera failed on camera index " + cameraId, e);
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return new ArrayList<CaptureFormat>();
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} finally {
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if (camera != null) {
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camera.release();
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}
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}
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final List<CaptureFormat> formatList = new ArrayList<CaptureFormat>();
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try {
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int minFps = 0;
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int maxFps = 0;
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final List<int[]> listFpsRange = parameters.getSupportedPreviewFpsRange();
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if (listFpsRange != null) {
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// getSupportedPreviewFpsRange() returns a sorted list. Take the fps range
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// corresponding to the highest fps.
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final int[] range = listFpsRange.get(listFpsRange.size() - 1);
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minFps = range[android.hardware.Camera.Parameters.PREVIEW_FPS_MIN_INDEX];
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maxFps = range[android.hardware.Camera.Parameters.PREVIEW_FPS_MAX_INDEX];
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}
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for (android.hardware.Camera.Size size : parameters.getSupportedPreviewSizes()) {
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formatList.add(new CaptureFormat(size.width, size.height, minFps, maxFps));
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}
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} catch (Exception e) {
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Logging.e(TAG, "getSupportedFormats() failed on camera index " + cameraId, e);
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}
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final long endTimeMs = SystemClock.elapsedRealtime();
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Logging.d(TAG, "Get supported formats for camera index " + cameraId + " done."
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+ " Time spent: " + (endTimeMs - startTimeMs) + " ms.");
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return formatList;
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}
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// Convert from android.hardware.Camera.Size to Size.
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static List<Size> convertSizes(List<android.hardware.Camera.Size> cameraSizes) {
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final List<Size> sizes = new ArrayList<Size>();
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for (android.hardware.Camera.Size size : cameraSizes) {
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sizes.add(new Size(size.width, size.height));
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}
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return sizes;
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}
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// Convert from int[2] to CaptureFormat.FramerateRange.
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static List<CaptureFormat.FramerateRange> convertFramerates(List<int[]> arrayRanges) {
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final List<CaptureFormat.FramerateRange> ranges = new ArrayList<CaptureFormat.FramerateRange>();
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for (int[] range : arrayRanges) {
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ranges.add(new CaptureFormat.FramerateRange(
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range[android.hardware.Camera.Parameters.PREVIEW_FPS_MIN_INDEX],
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range[android.hardware.Camera.Parameters.PREVIEW_FPS_MAX_INDEX]));
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}
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return ranges;
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}
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// Returns the camera index for camera with name |deviceName|, or throws IllegalArgumentException
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// if no such camera can be found.
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static int getCameraIndex(String deviceName) {
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Logging.d(TAG, "getCameraIndex: " + deviceName);
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for (int i = 0; i < android.hardware.Camera.getNumberOfCameras(); ++i) {
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if (deviceName.equals(getDeviceName(i))) {
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return i;
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}
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}
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throw new IllegalArgumentException("No such camera: " + deviceName);
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}
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// Returns the name of the camera with camera index. Returns null if the
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// camera can not be used.
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static @Nullable String getDeviceName(int index) {
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android.hardware.Camera.CameraInfo info = getCameraInfo(index);
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if (info == null) {
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return null;
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}
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String facing =
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(info.facing == android.hardware.Camera.CameraInfo.CAMERA_FACING_FRONT) ? "front" : "back";
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return "Camera " + index + ", Facing " + facing + ", Orientation " + info.orientation;
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}
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}
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