Mac Video Capture: Add Blackmagic DeckLink SDK for Mac to third_party folder

third_party/decklink/mac/include/DeckLinkAPIDispatch_v7_6.cpp

+/* -LICENSE-START-
+** Copyright (c) 2009 Blackmagic Design
+**
+** Permission is hereby granted, free of charge, to any person or organization
+** obtaining a copy of the software and accompanying documentation covered by
+** this license (the "Software") to use, reproduce, display, distribute,
+** execute, and transmit the Software, and to prepare derivative works of the
+** Software, and to permit third-parties to whom the Software is furnished to
+** do so, all subject to the following:
+** 
+** The copyright notices in the Software and this entire statement, including
+** the above license grant, this restriction and the following disclaimer,
+** must be included in all copies of the Software, in whole or in part, and
+** all derivative works of the Software, unless such copies or derivative
+** works are solely in the form of machine-executable object code generated by
+** a source language processor.
+** 
+** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+** FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+** SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+** FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+** ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+** DEALINGS IN THE SOFTWARE.
+** -LICENSE-END-
+*/
+/* DeckLinkAPIDispatch_v7_6.cpp */
+
+#include "DeckLinkAPI_v7_6.h"
+#include <pthread.h>
+
+#define kDeckLinkAPI_BundlePath "/Library/Frameworks/DeckLinkAPI.framework"
+
+typedef IDeckLinkIterator* (*CreateIteratorFunc_v7_6)(void);
+typedef IDeckLinkGLScreenPreviewHelper_v7_6* (*CreateOpenGLScreenPreviewHelperFunc_v7_6)(void);
+typedef IDeckLinkCocoaScreenPreviewCallback_v7_6* (*CreateCocoaScreenPreviewFunc_v7_6)(void*);
+typedef IDeckLinkVideoConversion_v7_6* (*CreateVideoConversionInstanceFunc_v7_6)(void);
+
+static pthread_once_t                                                           gDeckLinkOnceControl            = PTHREAD_ONCE_INIT;
+static CFBundleRef                                                                      gBundleRef                                      = NULL;
+static CreateIteratorFunc_v7_6                                          gCreateIteratorFunc                     = NULL;
+static CreateOpenGLScreenPreviewHelperFunc_v7_6         gCreateOpenGLPreviewFunc        = NULL;
+static CreateCocoaScreenPreviewFunc_v7_6                        gCreateCocoaPreviewFunc         = NULL;
+static CreateVideoConversionInstanceFunc_v7_6           gCreateVideoConversionFunc      = NULL;
+
+
+void    InitDeckLinkAPI_v7_6 (void)
+{
+        CFURLRef                bundleURL;
+
+        bundleURL = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, CFSTR(kDeckLinkAPI_BundlePath), kCFURLPOSIXPathStyle, true);
+        if (bundleURL != NULL)
+        {
+                gBundleRef = CFBundleCreate(kCFAllocatorDefault, bundleURL);
+                if (gBundleRef != NULL)
+                {
+                        gCreateIteratorFunc = (CreateIteratorFunc_v7_6)CFBundleGetFunctionPointerForName(gBundleRef, CFSTR("CreateDeckLinkIteratorInstance"));
+                        gCreateOpenGLPreviewFunc = (CreateOpenGLScreenPreviewHelperFunc_v7_6)CFBundleGetFunctionPointerForName(gBundleRef, CFSTR("CreateOpenGLScreenPreviewHelper"));
+                        gCreateCocoaPreviewFunc = (CreateCocoaScreenPreviewFunc_v7_6)CFBundleGetFunctionPointerForName(gBundleRef, CFSTR("CreateCocoaScreenPreview"));
+                        gCreateVideoConversionFunc = (CreateVideoConversionInstanceFunc_v7_6)CFBundleGetFunctionPointerForName(gBundleRef, CFSTR("CreateVideoConversionInstance"));
+                }
+                CFRelease(bundleURL);
+        }
+}
+
+IDeckLinkIterator*              CreateDeckLinkIteratorInstance_v7_6 (void)
+{
+        pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI_v7_6);
+        
+        if (gCreateIteratorFunc == NULL)
+                return NULL;
+        
+        return gCreateIteratorFunc();
+}
+
+IDeckLinkGLScreenPreviewHelper_v7_6*            CreateOpenGLScreenPreviewHelper_v7_6 (void)
+{
+        pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI_v7_6);
+        
+        if (gCreateOpenGLPreviewFunc == NULL)
+                return NULL;
+        
+        return gCreateOpenGLPreviewFunc();
+}
+
+IDeckLinkCocoaScreenPreviewCallback_v7_6*       CreateCocoaScreenPreview_v7_6 (void* parentView)
+{
+        pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI_v7_6);
+        
+        if (gCreateCocoaPreviewFunc == NULL)
+                return NULL;
+        
+        return gCreateCocoaPreviewFunc(parentView);
+}
+
+IDeckLinkVideoConversion_v7_6* CreateVideoConversionInstance_v7_6 (void)
+{
+        pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI_v7_6);
+        
+        if (gCreateVideoConversionFunc == NULL)
+                return NULL;
+        
+        return gCreateVideoConversionFunc();
+}
+