decklink ubuntu系统sdk

/* -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- **/ #include <stdio.h> #include <pthread.h> #include <dlfcn.h> #include "DeckLinkAPI.h" #define kDeckLinkAPI_Name "libDeckLinkAPI.so" #define KDeckLinkPreviewAPI_Name "libDeckLinkPreviewAPI.so" typedef IDeckLinkIterator* (*CreateIteratorFunc)(void); typedef IDeckLinkAPIInformation* (*CreateAPIInformationFunc)(void); typedef IDeckLinkGLScreenPreviewHelper* (*CreateOpenGLScreenPreviewHelperFunc)(void); typedef IDeckLinkVideoConversion* (*CreateVideoConversionInstanceFunc)(void); typedef IDeckLinkDiscovery* (*CreateDeckLinkDiscoveryInstanceFunc)(void); typedef IDeckLinkVideoFrameAncillaryPackets* (*CreateVideoFrameAncillaryPacketsInstanceFunc)(void); static pthread_once_t gDeckLinkOnceControl = PTHREAD_ONCE_INIT; static pthread_once_t gPreviewOnceControl = PTHREAD_ONCE_INIT; static bool gLoadedDeckLinkAPI = false; static CreateIteratorFunc gCreateIteratorFunc = NULL; static CreateAPIInformationFunc gCreateAPIInformationFunc = NULL; static CreateOpenGLScreenPreviewHelperFunc gCreateOpenGLPreviewFunc = NULL; static CreateVideoConversionInstanceFunc gCreateVideoConversionFunc = NULL; static CreateDeckLinkDiscoveryInstanceFunc gCreateDeckLinkDiscoveryFunc = NULL; static CreateVideoFrameAncillaryPacketsInstanceFunc gCreateVideoFrameAncillaryPacketsFunc = NULL; static void InitDeckLinkAPI (void) { void *libraryHandle; libraryHandle = dlopen(kDeckLinkAPI_Name, RTLD_NOW|RTLD_GLOBAL); if (!libraryHandle) { fprintf(stderr, "%s\n", dlerror()); return; } gLoadedDeckLinkAPI = true; gCreateIteratorFunc = (CreateIteratorFunc)dlsym(libraryHandle, "CreateDeckLinkIteratorInstance_0003"); if (!gCreateIteratorFunc) fprintf(stderr, "%s\n", dlerror()); gCreateAPIInformationFunc = (CreateAPIInformationFunc)dlsym(libraryHandle, "CreateDeckLinkAPIInformationInstance_0001"); if (!gCreateAPIInformationFunc) fprintf(stderr, "%s\n", dlerror()); gCreateVideoConversionFunc = (CreateVideoConversionInstanceFunc)dlsym(libraryHandle, "CreateVideoConversionInstance_0001"); if (!gCreateVideoConversionFunc) fprintf(stderr, "%s\n", dlerror()); gCreateDeckLinkDiscoveryFunc = (CreateDeckLinkDiscoveryInstanceFunc)dlsym(libraryHandle, "CreateDeckLinkDiscoveryInstance_0002"); if (!gCreateDeckLinkDiscoveryFunc) fprintf(stderr, "%s\n", dlerror()); gCreateVideoFrameAncillaryPacketsFunc = (CreateVideoFrameAncillaryPacketsInstanceFunc)dlsym(libraryHandle, "CreateVideoFrameAncillaryPacketsInstance_0001"); if (!gCreateVideoFrameAncillaryPacketsFunc) fprintf(stderr, "%s\n", dlerror()); } static void InitDeckLinkPreviewAPI (void) { void *libraryHandle; libraryHandle = dlopen(KDeckLinkPreviewAPI_Name, RTLD_NOW|RTLD_GLOBAL); if (!libraryHandle) { fprintf(stderr, "%s\n", dlerror()); return; } gCreateOpenGLPreviewFunc = (CreateOpenGLScreenPreviewHelperFunc)dlsym(libraryHandle, "CreateOpenGLScreenPreviewHelper_0001"); if (!gCreateOpenGLPreviewFunc) fprintf(stderr, "%s\n", dlerror()); } bool IsDeckLinkAPIPresent (void) { // If the DeckLink API dynamic library was successfully loaded, return this knowledge to the caller return gLoadedDeckLinkAPI; } IDeckLinkIterator* CreateDeckLinkIteratorInstance (void) { pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI); if (gCreateIteratorFunc == NULL) return NULL; return gCreateIteratorFunc(); } IDeckLinkAPIInformation* CreateDeckLinkAPIInformationInstance (void) { pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI); if (gCreateAPIInformationFunc == NULL) return NULL; return gCreateAPIInformationFunc(); } IDeckLinkGLScreenPreviewHelper* CreateOpenGLScreenPreviewHelper (void) { pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI); pthread_once(&gPreviewOnceControl, InitDeckLinkPreviewAPI); if (gCreateOpenGLPreviewFunc == NULL) return NULL; return gCreateOpenGLPreviewFunc(); } IDeckLinkVideoConversion* CreateVideoConversionInstance (void) { pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI); if (gCreateVideoConversionFunc == NULL) return NULL; return gCreateVideoConversionFunc(); } IDeckLinkDiscovery* CreateDeckLinkDiscoveryInstance (void) { pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI); if (gCreateDeckLinkDiscoveryFunc == NULL) return NULL; return gCreateDeckLinkDiscoveryFunc(); } IDeckLinkVideoFrameAncillaryPackets* CreateVideoFrameAncillaryPacketsInstance (void) { pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI); if (gCreateVideoFrameAncillaryPacketsFunc == NULL) return NULL; return gCreateVideoFrameAncillaryPacketsFunc(); }