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A context can create a GLsync object that can be waited on in order to ensure that GL resources created in one context are able to be used in another shared context without any chance of reading invalid data. This meta would be placed on buffers that are known to cross from one context to another. The receiving element would then wait on the sync object to ensure that the data to be used is complete.
52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
/*
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* GStreamer
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* Copyright (C) 2014 Matthew Waters <matthew@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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#ifndef __GST_GL_SYNC_META_H__
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#define __GST_GL_SYNC_META_H__
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#include <gst/gl/gstgl_fwd.h>
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G_BEGIN_DECLS
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#define GST_GL_SYNC_META_API_TYPE (gst_gl_sync_meta_api_get_type())
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#define GST_GL_SYNC_META_INFO (gst_gl_sync_meta_get_info())
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typedef struct _GstGLSyncMeta GstGLSyncMeta;
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#define GST_BUFFER_POOL_OPTION_GL_SYNC_META "GstBufferPoolOptionGLSyncMeta"
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struct _GstGLSyncMeta {
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/*< private >*/
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GstMeta parent;
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GstGLContext *context;
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GLsync glsync;
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};
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GType gst_gl_sync_meta_api_get_type (void);
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const GstMetaInfo * gst_gl_sync_meta_get_info (void);
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#define gst_buffer_get_gl_sync_meta(b) ((GstGLSyncMeta*)gst_buffer_get_meta((b),GST_GL_SYNC_META_API_TYPE))
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GstGLSyncMeta * gst_buffer_add_gl_sync_meta (GstGLContext * context, GstBuffer *buffer);
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void gst_gl_sync_meta_set_sync_point (GstGLSyncMeta * sync, GstGLContext * context);
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void gst_gl_sync_meta_wait (GstGLSyncMeta * sync);
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#endif /* __GST_GL_SYNC_META_H__ */
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