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Diff of /src/blackmagic/include/DeckLinkAPIDispatch_v8_0.cpp [000000] .. [e1c391]  Maximize  Restore

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+/* -LICENSE-START-
+** Copyright (c) 2011 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_v8_0.h"
+
+#define kDeckLinkAPI_Name "libDeckLinkAPI.so"
+#define KDeckLinkPreviewAPI_Name "libDeckLinkPreviewAPI.so"
+
+typedef IDeckLinkIterator_v8_0* (*CreateIteratorFunc)(void);
+typedef IDeckLinkAPIInformation* (*CreateAPIInformationFunc)(void);
+typedef IDeckLinkGLScreenPreviewHelper* (*CreateOpenGLScreenPreviewHelperFunc)(void);
+typedef IDeckLinkVideoConversion* (*CreateVideoConversionInstanceFunc)(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;
+
+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_0001");
+	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());
+}
+
+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_v8_0*		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();
+}
+