1/* 2 * Copyright (C) 2013 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef AVCaptureDeviceManager_h 27#define AVCaptureDeviceManager_h 28 29#if ENABLE(MEDIA_STREAM) && USE(AVFOUNDATION) 30 31#include "MediaStreamCenter.h" 32#include "MediaStreamSource.h" 33#include "MediaStreamTrackSourcesRequestClient.h" 34#include <wtf/RetainPtr.h> 35#include <wtf/text/WTFString.h> 36 37OBJC_CLASS AVCaptureDevice; 38OBJC_CLASS AVCaptureSession; 39OBJC_CLASS NSString; 40OBJC_CLASS WebCoreAVCaptureDeviceManagerObserver; 41 42namespace WebCore { 43 44class CaptureDevice; 45 46class AVCaptureDeviceManager { 47public: 48 static AVCaptureDeviceManager& shared(); 49 static bool isAvailable(); 50 51 Vector<RefPtr<TrackSourceInfo>> getSourcesInfo(const String&); 52 bool verifyConstraintsForMediaType(MediaStreamSource::Type, MediaConstraints*, String&); 53 RefPtr<MediaStreamSource> bestSourceForTypeAndConstraints(MediaStreamSource::Type, PassRefPtr<MediaConstraints>); 54 55 enum ValidConstraints { Width = 0, Height, FrameRate, FacingMode, Gain }; 56 static const Vector<AtomicString>& validConstraintNames(); 57 static const Vector<AtomicString>& validFacingModes(); 58 59 static bool deviceSupportsFacingMode(AVCaptureDevice*, MediaStreamSourceStates::VideoFacingMode); 60 static bool isValidConstraint(MediaStreamSource::Type, const String&); 61 static String bestSessionPresetForVideoSize(AVCaptureSession*, int width, int height); 62 63 void registerForDeviceNotifications(); 64 void deviceConnected(); 65 void deviceDisconnected(AVCaptureDevice*); 66 67protected: 68 AVCaptureDeviceManager(); 69 ~AVCaptureDeviceManager(); 70 71 CaptureDevice* bestDeviceForFacingMode(MediaStreamSourceStates::VideoFacingMode); 72 bool sessionSupportsConstraint(AVCaptureSession*, MediaStreamSource::Type, const String& name, const String& value); 73 74 RetainPtr<WebCoreAVCaptureDeviceManagerObserver> m_objcObserver; 75}; 76 77} // namespace WebCore 78 79#endif // ENABLE(MEDIA_STREAM) 80 81#endif // AVCaptureDeviceManager_h 82