a92281c965
This attemps to partially implement MISB ST1608.1, "Transport of Motion Imagery and Metadata over GigE Vision". This relies on GstKLVMeta, which is currently a merge request 124 for gst-plugins-base. For now we include it here. Currently all KLVMeta is packed into one chunk, no special handling of timestamps is done. Testing has only been done between pleorasink and pleorasrc, no other MISB-compliant stream.
83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
/* GStreamer KLV Metadata Support Library
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* Copyright (C) 2016-2019 Tim-Philipp Müller <tim@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_TAG_KLV_H__
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#define __GST_TAG_KLV_H__
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#include <gst/gst.h>
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// FIXME: include this for now until gst-plugins-base MR124 is accepted
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#define GST_TAG_API
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G_BEGIN_DECLS
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/**
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* GstKLVMeta:
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*
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* An opaque #GstMeta structure representing a self-contained KLV metadata
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* block that can be attached to buffers.
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*
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* Since: 1.16
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*/
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typedef struct {
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/*< private >*/
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GstMeta meta;
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} GstKLVMeta;
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GST_TAG_API
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GType gst_klv_meta_get_type (void);
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#define GST_KLV_META_API_TYPE (gst_klv_meta_api_get_type())
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#define GST_KLV_META_INFO (gst_klv_meta_get_info())
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GST_TAG_API
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GType gst_klv_meta_api_get_type (void);
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GST_TAG_API
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const GstMetaInfo * gst_klv_meta_get_info (void);
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/* Add KLV meta data to a buffer */
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GST_TAG_API
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GstKLVMeta * gst_buffer_add_klv_meta_from_data (GstBuffer * buffer, const guint8 * data, gsize size);
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GST_TAG_API
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GstKLVMeta * gst_buffer_add_klv_meta_take_data (GstBuffer * buffer, guint8 * data, gsize size);
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GST_TAG_API
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GstKLVMeta * gst_buffer_add_klv_meta_from_bytes (GstBuffer * buffer, GBytes * bytes);
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GST_TAG_API
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GstKLVMeta * gst_buffer_add_klv_meta_take_bytes (GstBuffer * buffer, GBytes * bytes);
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/* Get KLV meta data from a buffer */
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GST_TAG_API
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GstKLVMeta * gst_buffer_get_klv_meta (GstBuffer * buffer);
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GST_TAG_API
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const guint8 * gst_klv_meta_get_data (GstKLVMeta * klv_meta, gsize * size);
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GST_TAG_API
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GBytes * gst_klv_meta_get_bytes (GstKLVMeta * klv_meta);
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G_END_DECLS
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#endif /* __GST_TAG_KLV_H__ */
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