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| 1 /* |
| 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license |
| 5 * that can be found in the LICENSE file in the root of the source |
| 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ |
| 10 |
| 11 #pragma mark **** imports/includes |
| 12 |
| 13 #import "webrtc/modules/video_capture/mac/qtkit/video_capture_qtkit_info_objc.h" |
| 14 |
| 15 #include "webrtc/system_wrappers/include/trace.h" |
| 16 |
| 17 using namespace webrtc; |
| 18 |
| 19 #pragma mark **** hidden class interface |
| 20 |
| 21 @implementation VideoCaptureMacQTKitInfoObjC |
| 22 |
| 23 // ****************** over-written OS methods *********************** |
| 24 #pragma mark **** over-written OS methods |
| 25 |
| 26 /// ***** Objective-C. Similar to C++ constructor, although invoked manually |
| 27 /// ***** Potentially returns an instance of self |
| 28 -(id)init{ |
| 29 self = [super init]; |
| 30 if(nil != self){ |
| 31 [self checkOSSupported]; |
| 32 [self initializeVariables]; |
| 33 } |
| 34 else |
| 35 { |
| 36 return nil; |
| 37 } |
| 38 return self; |
| 39 } |
| 40 |
| 41 /// ***** Objective-C. Similar to C++ destructor |
| 42 /// ***** Returns nothing |
| 43 - (void)dealloc { |
| 44 |
| 45 [_captureDevicesInfo release]; |
| 46 |
| 47 [super dealloc]; |
| 48 } |
| 49 |
| 50 // ****************** public methods ****************** |
| 51 #pragma mark **** public method implementations |
| 52 |
| 53 /// ***** Creates a message box with Cocoa framework |
| 54 /// ***** Returns 0 on success, -1 otherwise. |
| 55 - (NSNumber*)displayCaptureSettingsDialogBoxWithDevice:(const char*)deviceUnique
IdUTF8 |
| 56 AndTitle:(const char*)dialogTitleUTF8 |
| 57 AndParentWindow:(void*) parentWindow |
| 58 AtX:(uint32_t)positionX |
| 59 AndY:(uint32_t) positionY |
| 60 { |
| 61 NSString* strTitle = [NSString stringWithFormat:@"%s", dialogTitleUTF8]; |
| 62 NSString* strButton = @"Alright"; |
| 63 NSAlert* alert = [NSAlert alertWithMessageText:strTitle |
| 64 defaultButton:strButton |
| 65 alternateButton:nil otherButton:nil |
| 66 informativeTextWithFormat:@"Device %s is capturing", devic
eUniqueIdUTF8]; |
| 67 [alert setAlertStyle:NSInformationalAlertStyle]; |
| 68 [alert runModal]; |
| 69 return [NSNumber numberWithInt:0]; |
| 70 } |
| 71 |
| 72 - (NSNumber*)getCaptureDeviceCount{ |
| 73 [self getCaptureDevices]; |
| 74 return [NSNumber numberWithInt:_captureDeviceCountInfo]; |
| 75 } |
| 76 |
| 77 |
| 78 - (NSNumber*)getDeviceNamesFromIndex:(uint32_t)index |
| 79 DefaultName:(char*)deviceName |
| 80 WithLength:(uint32_t)deviceNameLength |
| 81 AndUniqueID:(char*)deviceUniqueID |
| 82 WithLength:(uint32_t)deviceUniqueIDLength |
| 83 AndProductID:(char*)deviceProductID |
| 84 WithLength:(uint32_t)deviceProductIDLength |
| 85 { |
| 86 if(NO == _OSSupportedInfo) |
| 87 { |
| 88 return [NSNumber numberWithInt:0]; |
| 89 } |
| 90 |
| 91 if(index >= (uint32_t)_captureDeviceCountInfo) |
| 92 { |
| 93 return [NSNumber numberWithInt:-1]; |
| 94 } |
| 95 |
| 96 QTCaptureDevice* tempCaptureDevice = |
| 97 (QTCaptureDevice*)[_captureDevicesInfo objectAtIndex:index]; |
| 98 if(!tempCaptureDevice) |
| 99 { |
| 100 return [NSNumber numberWithInt:-1]; |
| 101 } |
| 102 |
| 103 memset(deviceName, 0, deviceNameLength); |
| 104 memset(deviceUniqueID, 0, deviceUniqueIDLength); |
| 105 |
| 106 bool successful = NO; |
| 107 |
| 108 NSString* tempString = [tempCaptureDevice localizedDisplayName]; |
| 109 successful = [tempString getCString:(char*)deviceName |
| 110 maxLength:deviceNameLength encoding:NSUTF8StringEncoding]; |
| 111 if(NO == successful) |
| 112 { |
| 113 memset(deviceName, 0, deviceNameLength); |
| 114 return [NSNumber numberWithInt:-1]; |
| 115 } |
| 116 |
| 117 tempString = [tempCaptureDevice uniqueID]; |
| 118 successful = [tempString getCString:(char*)deviceUniqueID |
| 119 maxLength:deviceUniqueIDLength encoding:NSUTF8StringEncoding]; |
| 120 if(NO == successful) |
| 121 { |
| 122 memset(deviceUniqueID, 0, deviceNameLength); |
| 123 return [NSNumber numberWithInt:-1]; |
| 124 } |
| 125 |
| 126 return [NSNumber numberWithInt:0]; |
| 127 |
| 128 } |
| 129 |
| 130 // ****************** "private" category functions below here *****************
* |
| 131 #pragma mark **** "private" method implementations |
| 132 |
| 133 - (NSNumber*)initializeVariables |
| 134 { |
| 135 if(NO == _OSSupportedInfo) |
| 136 { |
| 137 return [NSNumber numberWithInt:0]; |
| 138 } |
| 139 |
| 140 _poolInfo = [[NSAutoreleasePool alloc]init]; |
| 141 _captureDeviceCountInfo = 0; |
| 142 [self getCaptureDevices]; |
| 143 |
| 144 return [NSNumber numberWithInt:0]; |
| 145 } |
| 146 |
| 147 // ***** Checks to see if the QTCaptureSession framework is available in the OS |
| 148 // ***** If it is not, isOSSupprted = NO |
| 149 // ***** Throughout the rest of the class isOSSupprted is checked and functions |
| 150 // ***** are/aren't called depending |
| 151 // ***** The user can use weak linking to the QTKit framework and run on older |
| 152 // ***** versions of the OS |
| 153 // ***** I.E. Backwards compaitibility |
| 154 // ***** Returns nothing. Sets member variable |
| 155 - (void)checkOSSupported |
| 156 { |
| 157 Class osSupportedTest = NSClassFromString(@"QTCaptureSession"); |
| 158 if(nil == osSupportedTest) |
| 159 { |
| 160 _OSSupportedInfo = NO; |
| 161 } |
| 162 else |
| 163 { |
| 164 _OSSupportedInfo = YES; |
| 165 } |
| 166 } |
| 167 |
| 168 /// ***** Retrieves the number of capture devices currently available |
| 169 /// ***** Stores them in an NSArray instance |
| 170 /// ***** Returns 0 on success, -1 otherwise. |
| 171 - (NSNumber*)getCaptureDevices |
| 172 { |
| 173 if(NO == _OSSupportedInfo) |
| 174 { |
| 175 return [NSNumber numberWithInt:0]; |
| 176 } |
| 177 |
| 178 if(_captureDevicesInfo) |
| 179 { |
| 180 [_captureDevicesInfo release]; |
| 181 } |
| 182 _captureDevicesInfo = [[NSArray alloc] |
| 183 initWithArray:[QTCaptureDevice |
| 184 inputDevicesWithMediaType:QTMediaType
Video]]; |
| 185 |
| 186 _captureDeviceCountInfo = _captureDevicesInfo.count; |
| 187 |
| 188 return [NSNumber numberWithInt:0]; |
| 189 } |
| 190 |
| 191 @end |
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