]> git.sesse.net Git - kdenlive/blob - src/blackmagic/include/DeckLinkAPIDispatch_v7_6.cpp
* Add preliminary support for Blackmagic HDMI capture card
[kdenlive] / src / blackmagic / 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
28 #include <stdio.h>
29 #include <pthread.h>
30 #include <dlfcn.h>
31
32 #include "DeckLinkAPI_v7_6.h"
33
34 #define kDeckLinkAPI_Name "libDeckLinkAPI.so"
35 #define KDeckLinkPreviewAPI_Name "libDeckLinkPreviewAPI.so"
36
37 typedef IDeckLinkIterator* (*CreateIteratorFunc_v7_6)(void);
38 typedef IDeckLinkGLScreenPreviewHelper_v7_6* (*CreateOpenGLScreenPreviewHelperFunc_v7_6)(void);
39 typedef IDeckLinkVideoConversion_v7_6* (*CreateVideoConversionInstanceFunc_v7_6)(void);
40
41 static pthread_once_t                                   gDeckLinkOnceControl = PTHREAD_ONCE_INIT;
42 static pthread_once_t                                   gPreviewOnceControl = PTHREAD_ONCE_INIT;
43
44 static CreateIteratorFunc_v7_6                                          gCreateIteratorFunc                     = NULL;
45 static CreateOpenGLScreenPreviewHelperFunc_v7_6         gCreateOpenGLPreviewFunc        = NULL;
46 static CreateVideoConversionInstanceFunc_v7_6           gCreateVideoConversionFunc      = NULL;
47
48 void    InitDeckLinkAPI_v7_6 (void)
49 {
50         void *libraryHandle;
51         
52         libraryHandle = dlopen(kDeckLinkAPI_Name, RTLD_NOW|RTLD_GLOBAL);
53         if (!libraryHandle)
54         {
55                 fprintf(stderr, "%s\n", dlerror());
56                 return;
57         }
58         
59         gCreateIteratorFunc = (CreateIteratorFunc_v7_6)dlsym(libraryHandle, "CreateDeckLinkIteratorInstance");
60         if (!gCreateIteratorFunc)
61                 fprintf(stderr, "%s\n", dlerror());
62         gCreateVideoConversionFunc = (CreateVideoConversionInstanceFunc_v7_6)dlsym(libraryHandle, "CreateVideoConversionInstance");
63         if (!gCreateVideoConversionFunc)
64                 fprintf(stderr, "%s\n", dlerror());
65 }
66
67 void    InitDeckLinkPreviewAPI_v7_6 (void)
68 {
69         void *libraryHandle;
70         
71         libraryHandle = dlopen(KDeckLinkPreviewAPI_Name, RTLD_NOW|RTLD_GLOBAL);
72         if (!libraryHandle)
73         {
74                 fprintf(stderr, "%s\n", dlerror());
75                 return;
76         }
77         gCreateOpenGLPreviewFunc = (CreateOpenGLScreenPreviewHelperFunc_v7_6)dlsym(libraryHandle, "CreateOpenGLScreenPreviewHelper");
78         if (!gCreateOpenGLPreviewFunc)
79                 fprintf(stderr, "%s\n", dlerror());
80 }
81
82 IDeckLinkIterator*              CreateDeckLinkIteratorInstance_v7_6 (void)
83 {
84         pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI_v7_6);
85         
86         if (gCreateIteratorFunc == NULL)
87                 return NULL;
88         return gCreateIteratorFunc();
89 }
90
91 IDeckLinkGLScreenPreviewHelper_v7_6*            CreateOpenGLScreenPreviewHelper_v7_6 (void)
92 {
93         pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI_v7_6);
94         pthread_once(&gPreviewOnceControl, InitDeckLinkPreviewAPI_v7_6);
95         
96         if (gCreateOpenGLPreviewFunc == NULL)
97                 return NULL;
98         return gCreateOpenGLPreviewFunc();
99 }
100
101 IDeckLinkVideoConversion_v7_6* CreateVideoConversionInstance_v7_6 (void)
102 {
103         pthread_once(&gDeckLinkOnceControl, InitDeckLinkAPI_v7_6);
104         
105         if (gCreateVideoConversionFunc == NULL)
106                 return NULL;
107         return gCreateVideoConversionFunc();
108 }
109