1 /* 2 * libjingle 3 * Copyright 2013 Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 package org.webrtc; 29 30 /** Java version of cricket::VideoCapturer. */ 31 public class VideoCapturer { 32 private long nativeVideoCapturer; 33 VideoCapturer()34 protected VideoCapturer() { 35 } 36 create(String deviceName)37 public static VideoCapturer create(String deviceName) { 38 Object capturer = nativeCreateVideoCapturer(deviceName); 39 if (capturer != null) 40 return (VideoCapturer) (capturer); 41 return null; 42 } 43 44 // Sets |nativeCapturer| to be owned by VideoCapturer. setNativeCapturer(long nativeCapturer)45 protected void setNativeCapturer(long nativeCapturer) { 46 this.nativeVideoCapturer = nativeCapturer; 47 } 48 49 // Package-visible for PeerConnectionFactory. takeNativeVideoCapturer()50 long takeNativeVideoCapturer() { 51 if (nativeVideoCapturer == 0) { 52 throw new RuntimeException("Capturer can only be taken once!"); 53 } 54 long ret = nativeVideoCapturer; 55 nativeVideoCapturer = 0; 56 return ret; 57 } 58 dispose()59 public void dispose() { 60 // No-op iff this capturer is owned by a source (see comment on 61 // PeerConnectionFactoryInterface::CreateVideoSource()). 62 if (nativeVideoCapturer != 0) { 63 free(nativeVideoCapturer); 64 } 65 } 66 nativeCreateVideoCapturer(String deviceName)67 private static native Object nativeCreateVideoCapturer(String deviceName); 68 free(long nativeVideoCapturer)69 private static native void free(long nativeVideoCapturer); 70 } 71