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bc14cdf529
Add process_rtp_packet() vfunc that works just like the existing process() vfunc only that it takes the GstRTPBuffer that the base class has already mapped (with MAP_READ), which means that the subclass doesn't have to map it again, which allows more performant processing of input buffers for most RTP depayloaders. https://bugzilla.gnome.org/show_bug.cgi?id=750235
125 lines
4.8 KiB
C
125 lines
4.8 KiB
C
/* GStreamer
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* Copyright (C) <2005> Philippe Khalaf <burger@speedy.org>
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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_BASE_DEPAYLOAD_H__
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#define __GST_RTP_BASE_DEPAYLOAD_H__
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#include <gst/gst.h>
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#include <gst/rtp/gstrtpbuffer.h>
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G_BEGIN_DECLS
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#define GST_TYPE_RTP_BASE_DEPAYLOAD (gst_rtp_base_depayload_get_type())
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#define GST_RTP_BASE_DEPAYLOAD(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_BASE_DEPAYLOAD,GstRTPBaseDepayload))
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#define GST_RTP_BASE_DEPAYLOAD_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_BASE_DEPAYLOAD,GstRTPBaseDepayloadClass))
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#define GST_RTP_BASE_DEPAYLOAD_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_RTP_BASE_DEPAYLOAD,GstRTPBaseDepayloadClass))
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#define GST_IS_RTP_BASE_DEPAYLOAD(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_BASE_DEPAYLOAD))
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#define GST_IS_RTP_BASE_DEPAYLOAD_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_BASE_DEPAYLOAD))
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#define GST_RTP_BASE_DEPAYLOAD_CAST(obj) ((GstRTPBaseDepayload *)(obj))
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#define GST_RTP_BASE_DEPAYLOAD_SINKPAD(depayload) (GST_RTP_BASE_DEPAYLOAD_CAST (depayload)->sinkpad)
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#define GST_RTP_BASE_DEPAYLOAD_SRCPAD(depayload) (GST_RTP_BASE_DEPAYLOAD_CAST (depayload)->srcpad)
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typedef struct _GstRTPBaseDepayload GstRTPBaseDepayload;
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typedef struct _GstRTPBaseDepayloadClass GstRTPBaseDepayloadClass;
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typedef struct _GstRTPBaseDepayloadPrivate GstRTPBaseDepayloadPrivate;
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struct _GstRTPBaseDepayload
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{
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GstElement parent;
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GstPad *sinkpad, *srcpad;
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/* this attribute must be set by the child */
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guint clock_rate;
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GstSegment segment;
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gboolean need_newsegment;
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/*< private >*/
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GstRTPBaseDepayloadPrivate *priv;
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gpointer _gst_reserved[GST_PADDING];
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};
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/**
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* GstRTPBaseDepayloadClass:
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* @parent_class: the parent class
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* @set_caps: configure the depayloader
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* @process: process incoming rtp packets
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* @packet_lost: signal the depayloader about packet loss
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* @handle_event: custom event handling
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*
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* Base class for audio RTP payloader.
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*/
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struct _GstRTPBaseDepayloadClass
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{
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GstElementClass parent_class;
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/* virtuals, inform the subclass of the caps. */
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gboolean (*set_caps) (GstRTPBaseDepayload *filter, GstCaps *caps);
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/* pure virtual function, child must implement either this method
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* or the process_rtp_packet virtual method to process incoming
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* rtp packets. If the child returns a buffer without a valid timestamp,
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* the timestamp of @in will be applied to the result buffer and the
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* buffer will be pushed. If this function returns %NULL, nothing is
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* pushed. */
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GstBuffer * (*process) (GstRTPBaseDepayload *base, GstBuffer *in);
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/* non-pure function used to to signal the depayloader about packet loss. the
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* timestamp and duration are the estimated values of the lost packet.
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* The default implementation of this message pushes a segment update. */
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gboolean (*packet_lost) (GstRTPBaseDepayload *filter, GstEvent *event);
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/* the default implementation does the default actions for events but
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* implementation can override. */
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gboolean (*handle_event) (GstRTPBaseDepayload * filter, GstEvent * event);
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/* Optional. Same as the process virtual function, but slightly more
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* efficient, since it is passed the rtp buffer structure that has already
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* been mapped (with GST_MAP_READ) by the base class and thus does not have
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* to be mapped again by the subclass. Can be used by the subclass to process
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* incoming rtp packets. If the subclass returns a buffer without a valid
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* timestamp, the timestamp of the input buffer will be applied to the result
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* buffer and the output buffer will be pushed out. If this function returns
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* %NULL, nothing is pushed out.
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*
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* Since: 1.6
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*/
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GstBuffer * (*process_rtp_packet) (GstRTPBaseDepayload *base, GstRTPBuffer * rtp_buffer);
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING - 1];
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};
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GType gst_rtp_base_depayload_get_type (void);
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GstFlowReturn gst_rtp_base_depayload_push (GstRTPBaseDepayload *filter, GstBuffer *out_buf);
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GstFlowReturn gst_rtp_base_depayload_push_list (GstRTPBaseDepayload *filter, GstBufferList *out_list);
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G_END_DECLS
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#endif /* __GST_RTP_BASE_DEPAYLOAD_H__ */
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