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aea20f207d
The default behaviour of rtponviftimestamp is to drop buffers outside the segment. This creates obvious problems for reverse playback. The ONVIF specification unfortunately doesn't describe how to handle that specific use case, but we can expose a property to let the user disable the dropping behaviour, and forward these buffers with a G_MAXUINT64 ONVIF timestamp. Also modify rtponvifparse to handle such timestamps appropriately.
84 lines
2.5 KiB
C
84 lines
2.5 KiB
C
/*
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* gstrtponviftimestamp.h
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*
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* Copyright (C) 2014 Axis Communications AB
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* Author: Guillaume Desmottes <guillaume.desmottes@collabora.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 Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GST_RTP_ONVIF_TIMESTAMP_H__
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#define __GST_RTP_ONVIF_TIMESTAMP_H__
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#include <gst/gst.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#define GST_TYPE_RTP_ONVIF_TIMESTAMP \
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(gst_rtp_onvif_timestamp_get_type())
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#define GST_RTP_ONVIF_TIMESTAMP(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_ONVIF_TIMESTAMP,GstRtpOnvifTimestamp))
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#define GST_RTP_ONVIF_TIMESTAMP_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_ONVIF_TIMESTAMP,GstRtpOnvifTimestampClass))
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#define GST_IS_RTP_ONVIF_TIMESTAMP(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_ONVIF_TIMESTAMP))
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#define GST_IS_RTP_ONVIF_TIMESTAMP_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_ONVIF_TIMESTAMP))
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typedef struct _GstRtpOnvifTimestamp GstRtpOnvifTimestamp;
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typedef struct _GstRtpOnvifTimestampClass GstRtpOnvifTimestampClass;
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struct _GstRtpOnvifTimestamp {
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GstElement element;
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/* pads */
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GstPad *sinkpad,*srcpad;
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GstClockTime prop_ntp_offset;
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guint prop_cseq;
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gboolean prop_set_e_bit;
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gboolean prop_set_t_bit;
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gboolean prop_drop_out_of_segment;
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/* currently used ntp-offset
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*(can be changed runtime with a GstNtpOffset event)
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*/
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GstClockTime ntp_offset;
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/* a GstNtpOffset event might mark the stream as discontinued */
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gboolean set_d_bit;
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gboolean set_e_bit;
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gboolean set_t_bit;
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GstSegment segment;
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/* Buffer waiting to be handled, only used if prop_set_e_bit is TRUE */
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GQueue *event_queue;
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GstBuffer *buffer;
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GstBufferList *list;
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};
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struct _GstRtpOnvifTimestampClass {
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GstElementClass parent_class;
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};
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GType gst_rtp_onvif_timestamp_get_type(void);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __GST_RTP_ONVIF_TIMESTAMP_H__ */
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