1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
/* GStreamer
* Copyright (C) 2023 Seungha Yang <seungha@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/d3d11/gstd3d11.h>
#include "gstdwrite-utils.h"
GType
gst_dwrite_subtitle_meta_api_get_type (void)
{
static GType type = 0;
static const gchar *tags[] = { NULL, };
GST_DWRITE_CALL_ONCE_BEGIN {
type = gst_meta_api_type_register ("GstDWriteSubtitleMetaAPI", tags);
} GST_DWRITE_CALL_ONCE_END;
return type;
}
static gboolean
gst_dwrite_subtitle_meta_init (GstMeta * meta, gpointer params,
GstBuffer * buffer)
{
GstDWriteSubtitleMeta *m = (GstDWriteSubtitleMeta *) meta;
m->stream = NULL;
m->subtitle = NULL;
return TRUE;
}
static void
gst_dwrite_subtitle_meta_free (GstMeta * meta, GstBuffer * buffer)
{
GstDWriteSubtitleMeta *m = (GstDWriteSubtitleMeta *) meta;
if (m->stream)
gst_object_unref (m->stream);
if (m->subtitle)
gst_buffer_unref (m->subtitle);
}
static gboolean
gst_dwrite_subtitle_meta_transform (GstBuffer * dest, GstMeta * meta,
GstBuffer * buffer, GQuark type, gpointer data)
{
GstDWriteSubtitleMeta *dmeta, *smeta;
if (GST_META_TRANSFORM_IS_COPY (type)) {
smeta = (GstDWriteSubtitleMeta *) meta;
dmeta = gst_buffer_add_dwrite_subtitle_meta (dest,
smeta->stream, smeta->subtitle);
if (!dmeta)
return FALSE;
} else {
return FALSE;
}
return TRUE;
}
const GstMetaInfo *
gst_dwrite_subtitle_meta_get_info (void)
{
static const GstMetaInfo *info = NULL;
GST_DWRITE_CALL_ONCE_BEGIN {
info = gst_meta_register (GST_DWRITE_SUBTITLE_META_API_TYPE,
"GstDWriteSubtitleMeta",
sizeof (GstDWriteSubtitleMeta),
gst_dwrite_subtitle_meta_init,
gst_dwrite_subtitle_meta_free, gst_dwrite_subtitle_meta_transform);
}
GST_DWRITE_CALL_ONCE_END;
return info;
}
GstDWriteSubtitleMeta *
gst_buffer_add_dwrite_subtitle_meta (GstBuffer * buffer, GstStream * stream,
GstBuffer * subtitle)
{
GstDWriteSubtitleMeta *meta;
g_return_val_if_fail (GST_IS_BUFFER (buffer), NULL);
g_return_val_if_fail (GST_IS_STREAM (stream), NULL);
g_return_val_if_fail (GST_IS_BUFFER (subtitle), NULL);
meta = (GstDWriteSubtitleMeta *) gst_buffer_add_meta (buffer,
GST_DWRITE_SUBTITLE_META_INFO, NULL);
if (!meta)
return NULL;
meta->stream = (GstStream *) gst_object_ref (stream);
meta->subtitle = gst_buffer_ref (subtitle);
return meta;
}
gboolean
gst_dwrite_is_windows_10_or_greater (void)
{
static gboolean ret = FALSE;
GST_DWRITE_CALL_ONCE_BEGIN {
#if (!GST_D3D11_WINAPI_ONLY_APP)
OSVERSIONINFOEXW osverinfo;
typedef NTSTATUS (WINAPI fRtlGetVersion) (PRTL_OSVERSIONINFOEXW);
fRtlGetVersion *RtlGetVersion = NULL;
HMODULE hmodule = NULL;
memset (&osverinfo, 0, sizeof (OSVERSIONINFOEXW));
osverinfo.dwOSVersionInfoSize = sizeof (OSVERSIONINFOEXW);
hmodule = LoadLibraryW (L"ntdll.dll");
if (!hmodule)
return;
RtlGetVersion =
(fRtlGetVersion *) GetProcAddress (hmodule, "RtlGetVersion");
if (RtlGetVersion) {
RtlGetVersion (&osverinfo);
if (osverinfo.dwMajorVersion > 10 || osverinfo.dwMajorVersion == 10)
ret = TRUE;
}
if (hmodule)
FreeLibrary (hmodule);
#else
ret = TRUE;
#endif
} GST_DWRITE_CALL_ONCE_END;
return ret;
}
|
