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f766b85b96
Add a source-info property that will read/write meta to the buffers about RTP source information. The GstRTPSourceMeta can be used to transport information about the origin of a buffer, e.g. the sources that is included in a mixed audio buffer. A new function gst_rtp_base_payload_allocate_output_buffer() is added for payloaders to use to allocate the output RTP buffer with the correct number of CSRCs according to the meta and fill it. RTPSourceMeta does not make sense on RTP buffers since the information is in the RTP header. So the payloader will strip the meta from the output buffer. https://bugzilla.gnome.org/show_bug.cgi?id=761947
80 lines
2.5 KiB
C
80 lines
2.5 KiB
C
/* GStreamer
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* Copyright (C) <2016> Stian Selnes <stian@pexip.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_RTP_META_H__
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#define __GST_RTP_META_H__
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#include <gst/gst.h>
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#include <gst/rtp/rtp-prelude.h>
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G_BEGIN_DECLS
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#define GST_RTP_SOURCE_META_API_TYPE (gst_rtp_source_meta_api_get_type())
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#define GST_RTP_SOURCE_META_INFO (gst_rtp_source_meta_get_info())
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typedef struct _GstRTPSourceMeta GstRTPSourceMeta;
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#define GST_RTP_SOURCE_META_MAX_CSRC_COUNT 15
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/**
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* GstRTPSourceMeta:
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* @meta: parent #GstMeta
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* @ssrc: the SSRC
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* @ssrc_valid: whether @ssrc is set and valid
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* @csrc: (allow-none): pointer to the CSRCs
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* @csrc_count: number of elements in @csrc
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*
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* Meta describing the source(s) of the buffer.
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*
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* Since: 1.16
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*/
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struct _GstRTPSourceMeta
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{
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GstMeta meta;
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guint32 ssrc;
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gboolean ssrc_valid;
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guint32 csrc[GST_RTP_SOURCE_META_MAX_CSRC_COUNT];
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guint csrc_count;
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};
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GST_RTP_API
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GType gst_rtp_source_meta_api_get_type (void);
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GST_RTP_API
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GstRTPSourceMeta * gst_buffer_add_rtp_source_meta (GstBuffer * buf, const guint32 * ssrc,
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const guint32 * csrc, guint csrc_count);
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GST_RTP_API
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GstRTPSourceMeta * gst_buffer_get_rtp_source_meta (GstBuffer * buf);
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GST_RTP_API
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guint gst_rtp_source_meta_get_source_count (const GstRTPSourceMeta * meta);
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GST_RTP_API
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gboolean gst_rtp_source_meta_set_ssrc (GstRTPSourceMeta * meta, guint32 * ssrc);
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GST_RTP_API
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gboolean gst_rtp_source_meta_append_csrc (GstRTPSourceMeta * meta,
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const guint32 * csrc, guint csrc_count);
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GST_RTP_API
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const GstMetaInfo * gst_rtp_source_meta_get_info (void);
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G_END_DECLS
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#endif /* __GST_RTP_META_H__ */
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