third_party/decklink/mac/include/DeckLinkAPIDispatch_v7_6.cpp

   1 /* -LICENSE-START-
   2 ** Copyright (c) 2009 Blackmagic Design
   3 **
   4 ** Permission is hereby granted, free of charge, to any person or organization
   5 ** obtaining a copy of the software and accompanying documentation covered by
   6 ** this license (the "Software") to use, reproduce, display, distribute,
   7 ** execute, and transmit the Software, and to prepare derivative works of the
   8 ** Software, and to permit third-parties to whom the Software is furnished to
   9 ** do so, all subject to the following:
  10 **
  11 ** The copyright notices in the Software and this entire statement, including
  12 ** the above license grant, this restriction and the following disclaimer,
  13 ** must be included in all copies of the Software, in whole or in part, and
  14 ** all derivative works of the Software, unless such copies or derivative
  15 ** works are solely in the form of machine-executable object code generated by
  16 ** a source language processor.
  17 **
  18 ** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 ** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 ** FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
  21 ** SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
  22 ** FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
  23 ** ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  24 ** DEALINGS IN THE SOFTWARE.
  25 ** -LICENSE-END-
  26 */
  27 /* DeckLinkAPIDispatch_v7_6.cpp */
  28
  29 #include "DeckLinkAPI_v7_6.h"
  30 #include <pthread.h>
  31
  32 #define kDeckLinkAPI_BundlePath "/Library/Frameworks/DeckLinkAPI.framework"
  33
  34 typedef IDeckLinkIterator* (*CreateIteratorFunc_v7_6)(void);
  35 typedef IDeckLinkGLScreenPreviewHelper_v7_6* (*CreateOpenGLScreenPreviewHelperFunc_v7_6)(void);
  36 typedef IDeckLinkCocoaScreenPreviewCallback_v7_6* (*CreateCocoaScreenPreviewFunc_v7_6)(void*);
  37 typedef IDeckLinkVideoConversion_v7_6* (*CreateVideoConversionInstanceFunc_v7_6)(void);
  38
  39 static pthread_once_t                                                           gDeckLinkOnceControl            = PTHREAD_ONCE_INIT;
  40 static CFBundleRef                                                                      gBundleRef                                      = NULL;
  41 static CreateIteratorFunc_v7_6                                          gCreateIteratorFunc                     = NULL;
  42 static CreateOpenGLScreenPreviewHelperFunc_v7_6         gCreateOpenGLPreviewFunc        = NULL;
  43 static CreateCocoaScreenPreviewFunc_v7_6                        gCreateCocoaPreviewFunc         = NULL;
  44 static CreateVideoConversionInstanceFunc_v7_6           gCreateVideoConversionFunc      = NULL;
  45
  46
  47 void    InitDeckLinkAPI_v7_6 (void)
  48 {
  49         CFURLRef                bundleURL;
  50
  51         bundleURL = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, CFSTR(kDeckLinkAPI_BundlePath), kCFURLPOSIXPathStyle, true);
  52         if (bundleURL != NULL)
  53         {
  54                 gBundleRef = CFBundleCreate(kCFAllocatorDefault, bundleURL);
  55                 if (gBundleRef != NULL)
  56                 {
  57                         gCreateIteratorFunc = (CreateIteratorFunc_v7_6)CFBundleGetFunctionPointerForName(gBundleRef, CFSTR("CreateDeckLinkIteratorInstance"));
  58                         gCreateOpenGLPreviewFunc = (CreateOpenGLScreenPreviewHelperFunc_v7_6)CFBundleGetFunctionPointerForName(gBundleRef, CFSTR("CreateOpenGLScreenPreviewHelper"));
  59                         gCreateCocoaPreviewFunc = (CreateCocoaScreenPreviewFunc_v7_6)CFBundleGetFunctionPointerForName(gBundleRef, CFSTR("CreateCocoaScreenPreview"));
  60                         gCreateVideoConversionFunc = (CreateVideoConversionInstanceFunc_v7_6)CFBundleGetFunctionPointerForName(gBundleRef, CFSTR("CreateVideoConversionInstance"));
  61                 }
  62                 CFRelease(bundleURL);
  63         }
  64 }
  65
  66 IDeckLinkIterator*              CreateDeckLinkIteratorInstance_v7_6 (void)
  67 {
  68         pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI_v7_6);
  69
  70         if (gCreateIteratorFunc == NULL)
  71                 return NULL;
  72
  73         return gCreateIteratorFunc();
  74 }
  75
  76 IDeckLinkGLScreenPreviewHelper_v7_6*            CreateOpenGLScreenPreviewHelper_v7_6 (void)
  77 {
  78         pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI_v7_6);
  79
  80         if (gCreateOpenGLPreviewFunc == NULL)
  81                 return NULL;
  82
  83         return gCreateOpenGLPreviewFunc();
  84 }
  85
  86 IDeckLinkCocoaScreenPreviewCallback_v7_6*       CreateCocoaScreenPreview_v7_6 (void* parentView)
  87 {
  88         pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI_v7_6);
  89
  90         if (gCreateCocoaPreviewFunc == NULL)
  91                 return NULL;
  92
  93         return gCreateCocoaPreviewFunc(parentView);
  94 }
  95
  96 IDeckLinkVideoConversion_v7_6* CreateVideoConversionInstance_v7_6 (void)
  97 {
  98         pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI_v7_6);
  99
 100         if (gCreateVideoConversionFunc == NULL)
 101                 return NULL;
 102
 103         return gCreateVideoConversionFunc();
 104 }
 105