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1 /*
2  * Copyright (C) 2010 Ole André Vadla Ravnås <oleavr@soundrop.com>
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Library General Public
6  * License as published by the Free Software Foundation; either
7  * version 2 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * Library General Public License for more details.
13  *
14  * You should have received a copy of the GNU Library General Public
15  * License along with this library; if not, write to the
16  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17  * Boston, MA 02110-1301, USA.
18  */
19 
20 #ifndef __GST_VTUTIL_H__
21 #define __GST_VTUTIL_H__
22 
23 #include <glib.h>
24 #include <gst/gst.h>
25 #include <CoreFoundation/CoreFoundation.h>
26 #include <CoreMedia/CoreMedia.h>
27 
28 /* Some formats such as Apple ProRes have separate codec type mappings for all
29  * variants / profiles, and we don't want to instantiate separate elements for
30  * each variant, so we use a dummy type for details->format_id */
31 #define GST_kCMVideoCodecType_Some_AppleProRes  1
32 
33 // kCVPixelFormatType_64RGBALE is only available for 11.3 +.
34 // See https://developer.apple.com/documentation/corevideo/1563591-pixel_format_identifiers/kcvpixelformattype_64rgbale
35 #if defined(MAC_OS_X_VERSION_MAX_ALLOWED) && MAC_OS_X_VERSION_MAX_ALLOWED < 110300
36 #define kCVPixelFormatType_64RGBALE 'l64r'
37 #endif
38 #define GST_VTUTIL_HAVE_64ARGBALE __builtin_available(macOS 11.3, *)
39 
40 G_BEGIN_DECLS
41 
42 gchar * gst_vtutil_object_to_string (CFTypeRef obj);
43 gchar * gst_vtutil_string_to_utf8 (CFStringRef s);
44 void gst_vtutil_dict_set_i32 (CFMutableDictionaryRef dict,
45     CFStringRef key, gint32 value);
46 void gst_vtutil_dict_set_string (CFMutableDictionaryRef dict,
47     CFStringRef key, const gchar * value);
48 void gst_vtutil_dict_set_boolean (CFMutableDictionaryRef dict,
49     CFStringRef key, gboolean value);
50 void gst_vtutil_dict_set_data (CFMutableDictionaryRef dict,
51     CFStringRef key, guint8 * value, guint64 length);
52 void gst_vtutil_dict_set_object (CFMutableDictionaryRef dict,
53     CFStringRef key, CFTypeRef * value);
54 
55 CMVideoCodecType gst_vtutil_codec_type_from_prores_variant (const char * variant);
56 const char * gst_vtutil_codec_type_to_prores_variant (CMVideoCodecType codec_type);
57 
58 GstCaps * gst_vtutil_caps_append_video_format (GstCaps * caps,
59                                                const char * vfmt);
60 
61 G_END_DECLS
62 
63 #endif /* __GST_VTUTIL_H__ */
64