third_party/decklink/mac/include/DeckLinkAPIDispatch.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.cpp */
  28
  29 #include "DeckLinkAPI.h"
  30 #include <pthread.h>
  31
  32 #if BLACKMAGIC_DECKLINK_API_MAGIC != 1
  33         #error The DeckLink API version of DeckLinkAPIDispatch.cpp is not the same version as DeckLinkAPI.h
  34 #endif
  35
  36 #define kDeckLinkAPI_BundlePath "/Library/Frameworks/DeckLinkAPI.framework"
  37
  38
  39 typedef IDeckLinkIterator* (*CreateIteratorFunc)(void);
  40 typedef IDeckLinkAPIInformation* (*CreateAPIInformationFunc)(void);
  41 typedef IDeckLinkGLScreenPreviewHelper* (*CreateOpenGLScreenPreviewHelperFunc)(void);
  42 typedef IDeckLinkCocoaScreenPreviewCallback* (*CreateCocoaScreenPreviewFunc)(void*);
  43 typedef IDeckLinkVideoConversion* (*CreateVideoConversionInstanceFunc)(void);
  44 typedef IDeckLinkDiscovery* (*CreateDeckLinkDiscoveryInstanceFunc)(void);
  45
  46 static pthread_once_t                                           gDeckLinkOnceControl            = PTHREAD_ONCE_INIT;
  47 static CFBundleRef                                                      gDeckLinkAPIBundleRef           = NULL;
  48 static CreateIteratorFunc                                       gCreateIteratorFunc                     = NULL;
  49 static CreateAPIInformationFunc                         gCreateAPIInformationFunc       = NULL;
  50 static CreateOpenGLScreenPreviewHelperFunc      gCreateOpenGLPreviewFunc        = NULL;
  51 static CreateCocoaScreenPreviewFunc                     gCreateCocoaPreviewFunc         = NULL;
  52 static CreateVideoConversionInstanceFunc        gCreateVideoConversionFunc      = NULL;
  53 static CreateDeckLinkDiscoveryInstanceFunc  gCreateDeckLinkDiscoveryFunc= NULL;
  54
  55
  56 void    InitDeckLinkAPI (void)
  57 {
  58         CFURLRef                bundleURL;
  59
  60         bundleURL = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, CFSTR(kDeckLinkAPI_BundlePath), kCFURLPOSIXPathStyle, true);
  61         if (bundleURL != NULL)
  62         {
  63                 gDeckLinkAPIBundleRef = CFBundleCreate(kCFAllocatorDefault, bundleURL);
  64                 if (gDeckLinkAPIBundleRef != NULL)
  65                 {
  66                         gCreateIteratorFunc = (CreateIteratorFunc)CFBundleGetFunctionPointerForName(gDeckLinkAPIBundleRef, CFSTR("CreateDeckLinkIteratorInstance_0002"));
  67                         gCreateAPIInformationFunc = (CreateAPIInformationFunc)CFBundleGetFunctionPointerForName(gDeckLinkAPIBundleRef, CFSTR("CreateDeckLinkAPIInformationInstance_0001"));
  68                         gCreateOpenGLPreviewFunc = (CreateOpenGLScreenPreviewHelperFunc)CFBundleGetFunctionPointerForName(gDeckLinkAPIBundleRef, CFSTR("CreateOpenGLScreenPreviewHelper_0001"));
  69                         gCreateCocoaPreviewFunc = (CreateCocoaScreenPreviewFunc)CFBundleGetFunctionPointerForName(gDeckLinkAPIBundleRef, CFSTR("CreateCocoaScreenPreview_0001"));
  70                         gCreateVideoConversionFunc = (CreateVideoConversionInstanceFunc)CFBundleGetFunctionPointerForName(gDeckLinkAPIBundleRef, CFSTR("CreateVideoConversionInstance_0001"));
  71             gCreateDeckLinkDiscoveryFunc = (CreateDeckLinkDiscoveryInstanceFunc)CFBundleGetFunctionPointerForName(gDeckLinkAPIBundleRef, CFSTR("CreateDeckLinkDiscoveryInstance_0001"));
  72                 }
  73                 CFRelease(bundleURL);
  74         }
  75 }
  76
  77 bool            IsDeckLinkAPIPresent (void)
  78 {
  79         // If the DeckLink API bundle was successfully loaded, return this knowledge to the caller
  80         if (gDeckLinkAPIBundleRef != NULL)
  81                 return true;
  82
  83         return false;
  84 }
  85
  86 IDeckLinkIterator*              CreateDeckLinkIteratorInstance (void)
  87 {
  88         pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI);
  89
  90         if (gCreateIteratorFunc == NULL)
  91                 return NULL;
  92
  93         return gCreateIteratorFunc();
  94 }
  95
  96 IDeckLinkAPIInformation*        CreateDeckLinkAPIInformationInstance (void)
  97 {
  98         pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI);
  99
 100         if (gCreateAPIInformationFunc == NULL)
 101                 return NULL;
 102
 103         return gCreateAPIInformationFunc();
 104 }
 105
 106 IDeckLinkGLScreenPreviewHelper*         CreateOpenGLScreenPreviewHelper (void)
 107 {
 108         pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI);
 109
 110         if (gCreateOpenGLPreviewFunc == NULL)
 111                 return NULL;
 112
 113         return gCreateOpenGLPreviewFunc();
 114 }
 115
 116 IDeckLinkCocoaScreenPreviewCallback*    CreateCocoaScreenPreview (void* parentView)
 117 {
 118         pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI);
 119
 120         if (gCreateCocoaPreviewFunc == NULL)
 121                 return NULL;
 122
 123         return gCreateCocoaPreviewFunc(parentView);
 124 }
 125
 126 IDeckLinkVideoConversion* CreateVideoConversionInstance (void)
 127 {
 128         pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI);
 129
 130         if (gCreateVideoConversionFunc == NULL)
 131                 return NULL;
 132
 133         return gCreateVideoConversionFunc();
 134 }
 135
 136 IDeckLinkDiscovery* CreateDeckLinkDiscoveryInstance (void)
 137 {
 138         pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI);
 139
 140         if (gCreateDeckLinkDiscoveryFunc == NULL)
 141                 return NULL;
 142
 143         return gCreateDeckLinkDiscoveryFunc();
 144 }
 145
 146
 147 #define kBMDStreamingAPI_BundlePath "/Library/Application Support/Blackmagic Design/Streaming/BMDStreamingAPI.bundle"
 148
 149 typedef IBMDStreamingDiscovery* (*CreateDiscoveryFunc)(void);
 150 typedef IBMDStreamingH264NALParser* (*CreateNALParserFunc)(void);
 151
 152 static pthread_once_t      gBMDStreamingOnceControl  = PTHREAD_ONCE_INIT;
 153 static CFBundleRef         gBMDStreamingAPIBundleRef = NULL;
 154 static CreateDiscoveryFunc gCreateDiscoveryFunc      = NULL;
 155 static CreateNALParserFunc gCreateNALParserFunc      = NULL;
 156
 157 void InitBMDStreamingAPI(void)
 158 {
 159         CFURLRef bundleURL;
 160
 161         bundleURL = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, CFSTR(kBMDStreamingAPI_BundlePath), kCFURLPOSIXPathStyle, true);
 162         if (bundleURL != NULL)
 163         {
 164                 gBMDStreamingAPIBundleRef = CFBundleCreate(kCFAllocatorDefault, bundleURL);
 165                 if (gBMDStreamingAPIBundleRef != NULL)
 166                 {
 167                         gCreateDiscoveryFunc = (CreateDiscoveryFunc)CFBundleGetFunctionPointerForName(gBMDStreamingAPIBundleRef, CFSTR("CreateBMDStreamingDiscoveryInstance_0001"));
 168                         gCreateNALParserFunc = (CreateNALParserFunc)CFBundleGetFunctionPointerForName(gBMDStreamingAPIBundleRef, CFSTR("CreateBMDStreamingH264NALParser_0001"));
 169                 }
 170
 171                 CFRelease(bundleURL);
 172         }
 173 }
 174
 175 IBMDStreamingDiscovery* CreateBMDStreamingDiscoveryInstance()
 176 {
 177         pthread_once(&gBMDStreamingOnceControl, InitBMDStreamingAPI);
 178
 179         if (gCreateDiscoveryFunc == NULL)
 180                 return NULL;
 181
 182         return gCreateDiscoveryFunc();
 183 }
 184
 185 IBMDStreamingH264NALParser* CreateBMDStreamingH264NALParser()
 186 {
 187         pthread_once(&gBMDStreamingOnceControl, InitBMDStreamingAPI);
 188
 189         if (gCreateNALParserFunc == NULL)
 190                 return NULL;
 191
 192         return gCreateNALParserFunc();
 193 }