2 ** Copyright (c) 2009 Blackmagic Design
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5 ** obtaining a copy of the software and accompanying documentation covered by
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27 /* DeckLinkAPIDispatch.cpp */
29 #include "DeckLinkAPI.h"
32 #if BLACKMAGIC_DECKLINK_API_MAGIC != 1
33 #error The DeckLink API version of DeckLinkAPIDispatch.cpp is not the same version as DeckLinkAPI.h
36 #define kDeckLinkAPI_BundlePath "/Library/Application Support/Blackmagic Design/Blackmagic DeckLink/DeckLinkAPI.bundle"
38 typedef IDeckLinkIterator* (*CreateIteratorFunc)(void);
39 typedef IDeckLinkAPIInformation* (*CreateAPIInformationFunc)(void);
40 typedef IDeckLinkGLScreenPreviewHelper* (*CreateOpenGLScreenPreviewHelperFunc)(void);
41 typedef IDeckLinkCocoaScreenPreviewCallback* (*CreateCocoaScreenPreviewFunc)(void*);
42 typedef IDeckLinkVideoConversion* (*CreateVideoConversionInstanceFunc)(void);
44 static pthread_once_t gDeckLinkOnceControl = PTHREAD_ONCE_INIT;
45 static CFBundleRef gBundleRef = NULL;
46 static CreateIteratorFunc gCreateIteratorFunc = NULL;
47 static CreateAPIInformationFunc gCreateAPIInformationFunc = NULL;
48 static CreateOpenGLScreenPreviewHelperFunc gCreateOpenGLPreviewFunc = NULL;
49 static CreateCocoaScreenPreviewFunc gCreateCocoaPreviewFunc = NULL;
50 static CreateVideoConversionInstanceFunc gCreateVideoConversionFunc = NULL;
53 void InitDeckLinkAPI (void)
57 bundleURL = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, CFSTR(kDeckLinkAPI_BundlePath), kCFURLPOSIXPathStyle, true);
58 if (bundleURL != NULL)
60 gBundleRef = CFBundleCreate(kCFAllocatorDefault, bundleURL);
61 if (gBundleRef != NULL)
63 gCreateIteratorFunc = (CreateIteratorFunc)CFBundleGetFunctionPointerForName(gBundleRef, CFSTR("CreateDeckLinkIteratorInstance_0001"));
64 gCreateAPIInformationFunc = (CreateAPIInformationFunc)CFBundleGetFunctionPointerForName(gBundleRef, CFSTR("CreateDeckLinkAPIInformationInstance_0001"));
65 gCreateOpenGLPreviewFunc = (CreateOpenGLScreenPreviewHelperFunc)CFBundleGetFunctionPointerForName(gBundleRef, CFSTR("CreateOpenGLScreenPreviewHelper_0001"));
66 gCreateCocoaPreviewFunc = (CreateCocoaScreenPreviewFunc)CFBundleGetFunctionPointerForName(gBundleRef, CFSTR("CreateCocoaScreenPreview_0001"));
67 gCreateVideoConversionFunc = (CreateVideoConversionInstanceFunc)CFBundleGetFunctionPointerForName(gBundleRef, CFSTR("CreateVideoConversionInstance_0001"));
73 bool IsDeckLinkAPIPresent (void)
75 // If the DeckLink API bundle was successfully loaded, return this knowledge to the caller
76 if (gBundleRef != NULL)
82 IDeckLinkIterator* CreateDeckLinkIteratorInstance (void)
84 pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI);
86 if (gCreateIteratorFunc == NULL)
89 return gCreateIteratorFunc();
92 IDeckLinkAPIInformation* CreateDeckLinkAPIInformationInstance (void)
94 pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI);
96 if (gCreateAPIInformationFunc == NULL)
99 return gCreateAPIInformationFunc();
102 IDeckLinkGLScreenPreviewHelper* CreateOpenGLScreenPreviewHelper (void)
104 pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI);
106 if (gCreateOpenGLPreviewFunc == NULL)
109 return gCreateOpenGLPreviewFunc();
112 IDeckLinkCocoaScreenPreviewCallback* CreateCocoaScreenPreview (void* parentView)
114 pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI);
116 if (gCreateCocoaPreviewFunc == NULL)
119 return gCreateCocoaPreviewFunc(parentView);
122 IDeckLinkVideoConversion* CreateVideoConversionInstance (void)
124 pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI);
126 if (gCreateVideoConversionFunc == NULL)
129 return gCreateVideoConversionFunc();