| /* |
| * libjingle |
| * Copyright 2015 Google Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package org.webrtc; |
| |
| import android.os.SystemClock; |
| |
| import org.webrtc.CameraEnumerationAndroid.CaptureFormat; |
| import org.webrtc.Logging; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| @SuppressWarnings("deprecation") |
| public class CameraEnumerator implements CameraEnumerationAndroid.Enumerator { |
| private final static String TAG = "CameraEnumerator"; |
| // 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 List<List<CaptureFormat>> cachedSupportedFormats; |
| |
| @Override |
| public List<CaptureFormat> getSupportedFormats(int cameraId) { |
| synchronized (this) { |
| if (cachedSupportedFormats == null) { |
| cachedSupportedFormats = new ArrayList<List<CaptureFormat>>(); |
| for (int i = 0; i < CameraEnumerationAndroid.getDeviceCount(); ++i) { |
| cachedSupportedFormats.add(enumerateFormats(i)); |
| } |
| } |
| } |
| return cachedSupportedFormats.get(cameraId); |
| } |
| |
| private 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; |
| } |
| } |