1 files changed, 190 insertions, 0 deletions
diff --git a/third_party/libwebrtc/sdk/android/api/org/webrtc/Camera1Enumerator.java b/third_party/libwebrtc/sdk/android/api/org/webrtc/Camera1Enumerator.java
new file mode 100644
index 0000000000..4a1aacdb05
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+++ b/third_party/libwebrtc/sdk/android/api/org/webrtc/Camera1Enumerator.java
@@ -0,0 +1,190 @@
+/*
+ *  Copyright 2015 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.os.SystemClock;
+import androidx.annotation.Nullable;
+import java.util.ArrayList;
+import java.util.List;
+import org.webrtc.CameraEnumerationAndroid.CaptureFormat;
+
+@SuppressWarnings("deprecation")
+public class Camera1Enumerator implements CameraEnumerator {
+  private final static String TAG = "Camera1Enumerator";
+  // Each entry contains the supported formats for corresponding camera index. The formats for all
+  // cameras are enumerated on the first call to getSupportedFormats(), and cached for future
+  // reference.
+  private static List<List<CaptureFormat>> cachedSupportedFormats;
+
+  private final boolean captureToTexture;
+
+  public Camera1Enumerator() {
+    this(true /* captureToTexture */);
+  }
+
+  public Camera1Enumerator(boolean captureToTexture) {
+    this.captureToTexture = captureToTexture;
+  }
+
+  // Returns device names that can be used to create a new VideoCapturerAndroid.
+  @Override
+  public String[] getDeviceNames() {
+    ArrayList<String> namesList = new ArrayList<>();
+    for (int i = 0; i < android.hardware.Camera.getNumberOfCameras(); ++i) {
+      String name = getDeviceName(i);
+      if (name != null) {
+        namesList.add(name);
+        Logging.d(TAG, "Index: " + i + ". " + name);
+      } else {
+        Logging.e(TAG, "Index: " + i + ". Failed to query camera name.");
+      }
+    }
+    String[] namesArray = new String[namesList.size()];
+    return namesList.toArray(namesArray);
+  }
+
+  @Override
+  public boolean isFrontFacing(String deviceName) {
+    android.hardware.Camera.CameraInfo info = getCameraInfo(getCameraIndex(deviceName));
+    return info != null && info.facing == android.hardware.Camera.CameraInfo.CAMERA_FACING_FRONT;
+  }
+
+  @Override
+  public boolean isBackFacing(String deviceName) {
+    android.hardware.Camera.CameraInfo info = getCameraInfo(getCameraIndex(deviceName));
+    return info != null && info.facing == android.hardware.Camera.CameraInfo.CAMERA_FACING_BACK;
+  }
+
+  @Override
+  public boolean isInfrared(String deviceName) {
+    return false;
+  }
+
+  @Override
+  public List<CaptureFormat> getSupportedFormats(String deviceName) {
+    return getSupportedFormats(getCameraIndex(deviceName));
+  }
+
+  @Override
+  public CameraVideoCapturer createCapturer(
+      String deviceName, CameraVideoCapturer.CameraEventsHandler eventsHandler) {
+    return new Camera1Capturer(deviceName, eventsHandler, captureToTexture);
+  }
+
+  private static @Nullable android.hardware.Camera.CameraInfo getCameraInfo(int index) {
+    android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo();
+    try {
+      android.hardware.Camera.getCameraInfo(index, info);
+    } catch (Exception e) {
+      Logging.e(TAG, "getCameraInfo failed on index " + index, e);
+      return null;
+    }
+    return info;
+  }
+
+  static synchronized List<CaptureFormat> getSupportedFormats(int cameraId) {
+    if (cachedSupportedFormats == null) {
+      cachedSupportedFormats = new ArrayList<List<CaptureFormat>>();
+      for (int i = 0; i < android.hardware.Camera.getNumberOfCameras(); ++i) {
+        cachedSupportedFormats.add(enumerateFormats(i));
+      }
+    }
+    return cachedSupportedFormats.get(cameraId);
+  }
+
+  private static List<CaptureFormat> enumerateFormats(int cameraId) {
+    Logging.d(TAG, "Get supported formats for camera index " + cameraId + ".");
+    final long startTimeMs = SystemClock.elapsedRealtime();
+    final android.hardware.Camera.Parameters parameters;
+    android.hardware.Camera camera = null;
+    try {
+      Logging.d(TAG, "Opening camera with index " + cameraId);
+      camera = android.hardware.Camera.open(cameraId);
+      parameters = camera.getParameters();
+    } catch (RuntimeException e) {
+      Logging.e(TAG, "Open camera failed on camera index " + cameraId, e);
+      return new ArrayList<CaptureFormat>();
+    } finally {
+      if (camera != null) {
+        camera.release();
+      }
+    }
+
+    final List<CaptureFormat> formatList = new ArrayList<CaptureFormat>();
+    try {
+      int minFps = 0;
+      int maxFps = 0;
+      final List<int[]> listFpsRange = parameters.getSupportedPreviewFpsRange();
+      if (listFpsRange != null) {
+        // getSupportedPreviewFpsRange() returns a sorted list. Take the fps range
+        // corresponding to the highest fps.
+        final int[] range = listFpsRange.get(listFpsRange.size() - 1);
+        minFps = range[android.hardware.Camera.Parameters.PREVIEW_FPS_MIN_INDEX];
+        maxFps = range[android.hardware.Camera.Parameters.PREVIEW_FPS_MAX_INDEX];
+      }
+      for (android.hardware.Camera.Size size : parameters.getSupportedPreviewSizes()) {
+        formatList.add(new CaptureFormat(size.width, size.height, minFps, maxFps));
+      }
+    } catch (Exception e) {
+      Logging.e(TAG, "getSupportedFormats() failed on camera index " + cameraId, e);
+    }
+
+    final long endTimeMs = SystemClock.elapsedRealtime();
+    Logging.d(TAG, "Get supported formats for camera index " + cameraId + " done."
+            + " Time spent: " + (endTimeMs - startTimeMs) + " ms.");
+    return formatList;
+  }
+
+  // Convert from android.hardware.Camera.Size to Size.
+  static List<Size> convertSizes(List<android.hardware.Camera.Size> cameraSizes) {
+    final List<Size> sizes = new ArrayList<Size>();
+    for (android.hardware.Camera.Size size : cameraSizes) {
+      sizes.add(new Size(size.width, size.height));
+    }
+    return sizes;
+  }
+
+  // Convert from int[2] to CaptureFormat.FramerateRange.
+  static List<CaptureFormat.FramerateRange> convertFramerates(List<int[]> arrayRanges) {
+    final List<CaptureFormat.FramerateRange> ranges = new ArrayList<CaptureFormat.FramerateRange>();
+    for (int[] range : arrayRanges) {
+      ranges.add(new CaptureFormat.FramerateRange(
+          range[android.hardware.Camera.Parameters.PREVIEW_FPS_MIN_INDEX],
+          range[android.hardware.Camera.Parameters.PREVIEW_FPS_MAX_INDEX]));
+    }
+    return ranges;
+  }
+
+  // Returns the camera index for camera with name `deviceName`, or throws IllegalArgumentException
+  // if no such camera can be found.
+  static int getCameraIndex(String deviceName) {
+    Logging.d(TAG, "getCameraIndex: " + deviceName);
+    for (int i = 0; i < android.hardware.Camera.getNumberOfCameras(); ++i) {
+      if (deviceName.equals(getDeviceName(i))) {
+        return i;
+      }
+    }
+    throw new IllegalArgumentException("No such camera: " + deviceName);
+  }
+
+  // Returns the name of the camera with camera index. Returns null if the
+  // camera can not be used.
+  static @Nullable String getDeviceName(int index) {
+    android.hardware.Camera.CameraInfo info = getCameraInfo(index);
+    if (info == null) {
+      return null;
+    }
+
+    String facing =
+        (info.facing == android.hardware.Camera.CameraInfo.CAMERA_FACING_FRONT) ? "front" : "back";
+    return "Camera " + index + ", Facing " + facing + ", Orientation " + info.orientation;
+  }
+}