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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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