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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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fce6edd0f1
dwrite plugin internal use and will be removed once it's added to -base Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4934>
159 lines
4 KiB
C++
159 lines
4 KiB
C++
/* GStreamer
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* Copyright (C) 2023 Seungha Yang <seungha@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/d3d11/gstd3d11.h>
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#include "gstdwrite-utils.h"
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GType
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gst_dwrite_subtitle_meta_api_get_type (void)
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{
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static GType type = 0;
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static const gchar *tags[] = { NULL, };
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GST_DWRITE_CALL_ONCE_BEGIN {
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type = gst_meta_api_type_register ("GstDWriteSubtitleMetaAPI", tags);
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} GST_DWRITE_CALL_ONCE_END;
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return type;
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}
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static gboolean
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gst_dwrite_subtitle_meta_init (GstMeta * meta, gpointer params,
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GstBuffer * buffer)
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{
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GstDWriteSubtitleMeta *m = (GstDWriteSubtitleMeta *) meta;
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m->stream = NULL;
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m->subtitle = NULL;
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return TRUE;
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}
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static void
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gst_dwrite_subtitle_meta_free (GstMeta * meta, GstBuffer * buffer)
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{
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GstDWriteSubtitleMeta *m = (GstDWriteSubtitleMeta *) meta;
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if (m->stream)
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gst_object_unref (m->stream);
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if (m->subtitle)
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gst_buffer_unref (m->subtitle);
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}
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static gboolean
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gst_dwrite_subtitle_meta_transform (GstBuffer * dest, GstMeta * meta,
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GstBuffer * buffer, GQuark type, gpointer data)
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{
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GstDWriteSubtitleMeta *dmeta, *smeta;
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if (GST_META_TRANSFORM_IS_COPY (type)) {
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smeta = (GstDWriteSubtitleMeta *) meta;
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dmeta = gst_buffer_add_dwrite_subtitle_meta (dest,
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smeta->stream, smeta->subtitle);
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if (!dmeta)
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return FALSE;
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} else {
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return FALSE;
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}
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return TRUE;
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}
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const GstMetaInfo *
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gst_dwrite_subtitle_meta_get_info (void)
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{
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static const GstMetaInfo *info = NULL;
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GST_DWRITE_CALL_ONCE_BEGIN {
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info = gst_meta_register (GST_DWRITE_SUBTITLE_META_API_TYPE,
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"GstDWriteSubtitleMeta",
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sizeof (GstDWriteSubtitleMeta),
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gst_dwrite_subtitle_meta_init,
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gst_dwrite_subtitle_meta_free, gst_dwrite_subtitle_meta_transform);
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}
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GST_DWRITE_CALL_ONCE_END;
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return info;
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}
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GstDWriteSubtitleMeta *
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gst_buffer_add_dwrite_subtitle_meta (GstBuffer * buffer, GstStream * stream,
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GstBuffer * subtitle)
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{
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GstDWriteSubtitleMeta *meta;
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g_return_val_if_fail (GST_IS_BUFFER (buffer), NULL);
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g_return_val_if_fail (GST_IS_STREAM (stream), NULL);
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g_return_val_if_fail (GST_IS_BUFFER (subtitle), NULL);
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meta = (GstDWriteSubtitleMeta *) gst_buffer_add_meta (buffer,
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GST_DWRITE_SUBTITLE_META_INFO, NULL);
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if (!meta)
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return NULL;
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meta->stream = (GstStream *) gst_object_ref (stream);
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meta->subtitle = gst_buffer_ref (subtitle);
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return meta;
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}
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gboolean
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gst_dwrite_is_windows_10_or_greater (void)
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{
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static gboolean ret = FALSE;
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GST_DWRITE_CALL_ONCE_BEGIN {
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#if (!GST_D3D11_WINAPI_ONLY_APP)
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OSVERSIONINFOEXW osverinfo;
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typedef NTSTATUS (WINAPI fRtlGetVersion) (PRTL_OSVERSIONINFOEXW);
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fRtlGetVersion *RtlGetVersion = NULL;
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HMODULE hmodule = NULL;
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memset (&osverinfo, 0, sizeof (OSVERSIONINFOEXW));
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osverinfo.dwOSVersionInfoSize = sizeof (OSVERSIONINFOEXW);
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hmodule = LoadLibraryW (L"ntdll.dll");
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if (!hmodule)
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return;
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RtlGetVersion =
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(fRtlGetVersion *) GetProcAddress (hmodule, "RtlGetVersion");
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if (RtlGetVersion) {
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RtlGetVersion (&osverinfo);
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if (osverinfo.dwMajorVersion > 10 || osverinfo.dwMajorVersion == 10)
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ret = TRUE;
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}
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if (hmodule)
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FreeLibrary (hmodule);
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#else
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ret = TRUE;
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#endif
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} GST_DWRITE_CALL_ONCE_END;
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return ret;
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}
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