1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // AVFoundation API is only introduced in Mac OS X > 10.6, and there is only one 6 // build of Chromium, so the (potential) linking with AVFoundation has to happen 7 // in runtime. For this to be clean, an AVFoundationGlue class is defined to try 8 // and load these AVFoundation system libraries. If it succeeds, subsequent 9 // clients can use AVFoundation via the rest of the classes declared in this 10 // file. 11 12 #ifndef MEDIA_VIDEO_CAPTURE_MAC_AVFOUNDATION_GLUE_H_ 13 #define MEDIA_VIDEO_CAPTURE_MAC_AVFOUNDATION_GLUE_H_ 14 15 #import <Foundation/Foundation.h> 16 17 #include "base/basictypes.h" 18 #include "media/base/media_export.h" 19 #import "media/video/capture/mac/coremedia_glue.h" 20 21 class MEDIA_EXPORT AVFoundationGlue { 22 public: 23 // This method returns true if the OS version supports AVFoundation and the 24 // AVFoundation bundle could be loaded correctly, or false otherwise. 25 static bool IsAVFoundationSupported(); 26 27 static NSBundle const* AVFoundationBundle(); 28 29 static void* AVFoundationLibraryHandle(); 30 31 // Originally coming from AVCaptureDevice.h but in global namespace. 32 static NSString* AVCaptureDeviceWasConnectedNotification(); 33 static NSString* AVCaptureDeviceWasDisconnectedNotification(); 34 35 // Originally coming from AVMediaFormat.h but in global namespace. 36 static NSString* AVMediaTypeVideo(); 37 static NSString* AVMediaTypeAudio(); 38 static NSString* AVMediaTypeMuxed(); 39 40 // Originally from AVCaptureSession.h but in global namespace. 41 static NSString* AVCaptureSessionRuntimeErrorNotification(); 42 static NSString* AVCaptureSessionDidStopRunningNotification(); 43 static NSString* AVCaptureSessionErrorKey(); 44 45 // Originally from AVVideoSettings.h but in global namespace. 46 static NSString* AVVideoScalingModeKey(); 47 static NSString* AVVideoScalingModeResizeAspectFill(); 48 49 static Class AVCaptureSessionClass(); 50 static Class AVCaptureVideoDataOutputClass(); 51 52 private: 53 DISALLOW_IMPLICIT_CONSTRUCTORS(AVFoundationGlue); 54 }; 55 56 // Originally AVCaptureDevice and coming from AVCaptureDevice.h 57 MEDIA_EXPORT 58 @interface CrAVCaptureDevice : NSObject 59 60 - (BOOL)hasMediaType:(NSString*)mediaType; 61 - (NSString*)uniqueID; 62 - (NSString*)localizedName; 63 - (BOOL)isSuspended; 64 - (NSArray*)formats; 65 66 @end 67 68 // Originally AVCaptureDeviceFormat and coming from AVCaptureDevice.h. 69 MEDIA_EXPORT 70 @interface CrAVCaptureDeviceFormat : NSObject 71 72 - (CoreMediaGlue::CMFormatDescriptionRef)formatDescription; 73 - (NSArray*)videoSupportedFrameRateRanges; 74 75 @end 76 77 // Originally AVFrameRateRange and coming from AVCaptureDevice.h. 78 MEDIA_EXPORT 79 @interface CrAVFrameRateRange : NSObject 80 81 - (Float64)maxFrameRate; 82 83 @end 84 85 MEDIA_EXPORT 86 @interface CrAVCaptureInput // Originally from AVCaptureInput.h. 87 @end 88 89 MEDIA_EXPORT 90 @interface CrAVCaptureOutput // Originally from AVCaptureOutput.h. 91 @end 92 93 // Originally AVCaptureSession and coming from AVCaptureSession.h. 94 MEDIA_EXPORT 95 @interface CrAVCaptureSession : NSObject 96 97 - (void)release; 98 - (void)addInput:(CrAVCaptureInput*)input; 99 - (void)removeInput:(CrAVCaptureInput*)input; 100 - (void)addOutput:(CrAVCaptureOutput*)output; 101 - (void)removeOutput:(CrAVCaptureOutput*)output; 102 - (BOOL)isRunning; 103 - (void)startRunning; 104 - (void)stopRunning; 105 106 @end 107 108 // Originally AVCaptureConnection and coming from AVCaptureSession.h. 109 MEDIA_EXPORT 110 @interface CrAVCaptureConnection : NSObject 111 112 - (BOOL)isVideoMinFrameDurationSupported; 113 - (void)setVideoMinFrameDuration:(CoreMediaGlue::CMTime)minFrameRate; 114 - (BOOL)isVideoMaxFrameDurationSupported; 115 - (void)setVideoMaxFrameDuration:(CoreMediaGlue::CMTime)maxFrameRate; 116 117 @end 118 119 // Originally AVCaptureDeviceInput and coming from AVCaptureInput.h. 120 MEDIA_EXPORT 121 @interface CrAVCaptureDeviceInput : CrAVCaptureInput 122 123 @end 124 125 // Originally AVCaptureVideoDataOutputSampleBufferDelegate from 126 // AVCaptureOutput.h. 127 @protocol CrAVCaptureVideoDataOutputSampleBufferDelegate <NSObject> 128 129 @optional 130 131 - (void)captureOutput:(CrAVCaptureOutput*)captureOutput 132 didOutputSampleBuffer:(CoreMediaGlue::CMSampleBufferRef)sampleBuffer 133 fromConnection:(CrAVCaptureConnection*)connection; 134 135 @end 136 137 // Originally AVCaptureVideoDataOutput and coming from AVCaptureOutput.h. 138 MEDIA_EXPORT 139 @interface CrAVCaptureVideoDataOutput : CrAVCaptureOutput 140 141 - (oneway void)release; 142 - (void)setSampleBufferDelegate:(id)sampleBufferDelegate 143 queue:(dispatch_queue_t)sampleBufferCallbackQueue; 144 145 - (void)setVideoSettings:(NSDictionary*)videoSettings; 146 - (NSDictionary*)videoSettings; 147 - (CrAVCaptureConnection*)connectionWithMediaType:(NSString*)mediaType; 148 149 @end 150 151 // Class to provide access to class methods of AVCaptureDevice. 152 MEDIA_EXPORT 153 @interface AVCaptureDeviceGlue : NSObject 154 155 + (NSArray*)devices; 156 157 + (CrAVCaptureDevice*)deviceWithUniqueID:(NSString*)deviceUniqueID; 158 159 @end 160 161 // Class to provide access to class methods of AVCaptureDeviceInput. 162 MEDIA_EXPORT 163 @interface AVCaptureDeviceInputGlue : NSObject 164 165 + (CrAVCaptureDeviceInput*)deviceInputWithDevice:(CrAVCaptureDevice*)device 166 error:(NSError**)outError; 167 168 @end 169 170 #endif // MEDIA_VIDEO_CAPTURE_MAC_AVFOUNDATION_GLUE_H_ 171
