mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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4ae82906ab
Original commit message from CVS: * gst-libs/gst/rtp/gstbasertpdepayload.c: (gst_base_rtp_depayload_setcaps), (gst_base_rtp_depayload_chain), (gst_base_rtp_depayload_set_gst_timestamp), (gst_base_rtp_depayload_change_state): * gst-libs/gst/rtp/gstbasertpdepayload.h: Add some more G_LIKELY Fail when the setcaps function was not called. * gst-libs/gst/rtp/gstbasertppayload.c: (gst_basertppayload_set_outcaps): Propagate return value of setcaps.
846 lines
26 KiB
C
846 lines
26 KiB
C
/* GStreamer
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* Copyright (C) <2005> Wim Taymans <wim@fluendo.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
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*/
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/**
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* SECTION:gstbasertppayload
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* @short_description: Base class for RTP payloader
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*
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* <refsect2>
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* <para>
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* Provides a base class for RTP payloaders
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* </para>
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* </refsect2>
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <string.h>
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#include <gst/rtp/gstrtpbuffer.h>
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#include "gstbasertppayload.h"
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GST_DEBUG_CATEGORY_STATIC (basertppayload_debug);
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#define GST_CAT_DEFAULT (basertppayload_debug)
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#define GST_BASE_RTP_PAYLOAD_GET_PRIVATE(obj) \
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(G_TYPE_INSTANCE_GET_PRIVATE ((obj), GST_TYPE_BASE_RTP_PAYLOAD, GstBaseRTPPayloadPrivate))
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struct _GstBaseRTPPayloadPrivate
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{
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gboolean ts_offset_random;
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gboolean seqnum_offset_random;
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gboolean ssrc_random;
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guint16 next_seqnum;
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};
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/* BaseRTPPayload signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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/* FIXME 0.11, a better default is the Ethernet MTU of
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* 1500 - sizeof(headers) as pointed out by marcelm in IRC:
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* So an Ethernet MTU of 1500, minus 60 for the max IP, minus 8 for UDP, gives
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* 1432 bytes or so. And that should be adjusted downward further for other
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* encapsulations like PPPoE, so 1400 at most.
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*/
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#define DEFAULT_MTU 1400
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#define DEFAULT_PT 96
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#define DEFAULT_SSRC -1
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#define DEFAULT_TIMESTAMP_OFFSET -1
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#define DEFAULT_SEQNUM_OFFSET -1
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#define DEFAULT_MAX_PTIME -1
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#define DEFAULT_MIN_PTIME 0
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enum
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{
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PROP_0,
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PROP_MTU,
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PROP_PT,
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PROP_SSRC,
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PROP_TIMESTAMP_OFFSET,
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PROP_SEQNUM_OFFSET,
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PROP_MAX_PTIME,
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PROP_MIN_PTIME,
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PROP_TIMESTAMP,
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PROP_SEQNUM
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};
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static void gst_basertppayload_class_init (GstBaseRTPPayloadClass * klass);
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static void gst_basertppayload_base_init (GstBaseRTPPayloadClass * klass);
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static void gst_basertppayload_init (GstBaseRTPPayload * basertppayload,
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gpointer g_class);
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static void gst_basertppayload_finalize (GObject * object);
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static gboolean gst_basertppayload_sink_setcaps (GstPad * pad, GstCaps * caps);
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static GstCaps *gst_basertppayload_sink_getcaps (GstPad * pad);
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static gboolean gst_basertppayload_event (GstPad * pad, GstEvent * event);
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static GstFlowReturn gst_basertppayload_chain (GstPad * pad,
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GstBuffer * buffer);
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static void gst_basertppayload_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_basertppayload_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstStateChangeReturn gst_basertppayload_change_state (GstElement *
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element, GstStateChange transition);
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static GstElementClass *parent_class = NULL;
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/* FIXME 0.11: API should be changed to gst_base_typ_payload_xyz */
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GType
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gst_basertppayload_get_type (void)
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{
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static GType basertppayload_type = 0;
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if (!basertppayload_type) {
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static const GTypeInfo basertppayload_info = {
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sizeof (GstBaseRTPPayloadClass),
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(GBaseInitFunc) gst_basertppayload_base_init,
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NULL,
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(GClassInitFunc) gst_basertppayload_class_init,
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NULL,
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NULL,
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sizeof (GstBaseRTPPayload),
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0,
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(GInstanceInitFunc) gst_basertppayload_init,
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};
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basertppayload_type =
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g_type_register_static (GST_TYPE_ELEMENT, "GstBaseRTPPayload",
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&basertppayload_info, G_TYPE_FLAG_ABSTRACT);
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}
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return basertppayload_type;
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}
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static void
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gst_basertppayload_base_init (GstBaseRTPPayloadClass * klass)
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{
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}
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static void
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gst_basertppayload_class_init (GstBaseRTPPayloadClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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g_type_class_add_private (klass, sizeof (GstBaseRTPPayloadPrivate));
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parent_class = g_type_class_peek_parent (klass);
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gobject_class->finalize = gst_basertppayload_finalize;
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gobject_class->set_property = gst_basertppayload_set_property;
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gobject_class->get_property = gst_basertppayload_get_property;
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MTU,
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g_param_spec_uint ("mtu", "MTU",
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"Maximum size of one packet",
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28, G_MAXUINT, DEFAULT_MTU,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PT,
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g_param_spec_uint ("pt", "payload type",
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"The payload type of the packets", 0, 0x80, DEFAULT_PT,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SSRC,
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g_param_spec_uint ("ssrc", "SSRC",
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"The SSRC of the packets (default == random)", 0, G_MAXUINT32,
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DEFAULT_SSRC, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass),
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PROP_TIMESTAMP_OFFSET, g_param_spec_uint ("timestamp-offset",
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"Timestamp Offset",
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"Offset to add to all outgoing timestamps (default = random)", 0,
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G_MAXUINT32, DEFAULT_TIMESTAMP_OFFSET,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SEQNUM_OFFSET,
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g_param_spec_int ("seqnum-offset", "Sequence number Offset",
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"Offset to add to all outgoing seqnum (-1 = random)", -1, G_MAXUINT16,
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DEFAULT_SEQNUM_OFFSET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MAX_PTIME,
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g_param_spec_int64 ("max-ptime", "Max packet time",
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"Maximum duration of the packet data in ns (-1 = unlimited up to MTU)",
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-1, G_MAXINT64, DEFAULT_MAX_PTIME,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstBaseRTPAudioPayload:min-ptime:
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*
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* Minimum duration of the packet data in ns (can't go above MTU)
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*
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* Since: 0.10.13
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**/
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MIN_PTIME,
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g_param_spec_int64 ("min-ptime", "Min packet time",
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"Minimum duration of the packet data in ns (can't go above MTU)",
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0, G_MAXINT64, DEFAULT_MIN_PTIME,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_TIMESTAMP,
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g_param_spec_uint ("timestamp", "Timestamp",
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"The RTP timestamp of the last processed packet",
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0, G_MAXUINT32, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SEQNUM,
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g_param_spec_uint ("seqnum", "Sequence number",
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"The RTP sequence number of the last processed packet",
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0, G_MAXUINT16, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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gstelement_class->change_state = gst_basertppayload_change_state;
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GST_DEBUG_CATEGORY_INIT (basertppayload_debug, "basertppayload", 0,
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"Base class for RTP Payloaders");
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}
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static void
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gst_basertppayload_init (GstBaseRTPPayload * basertppayload, gpointer g_class)
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{
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GstPadTemplate *templ;
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GstBaseRTPPayloadPrivate *priv;
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basertppayload->priv = priv =
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GST_BASE_RTP_PAYLOAD_GET_PRIVATE (basertppayload);
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templ =
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gst_element_class_get_pad_template (GST_ELEMENT_CLASS (g_class), "src");
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g_return_if_fail (templ != NULL);
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basertppayload->srcpad = gst_pad_new_from_template (templ, "src");
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gst_element_add_pad (GST_ELEMENT (basertppayload), basertppayload->srcpad);
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templ =
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gst_element_class_get_pad_template (GST_ELEMENT_CLASS (g_class), "sink");
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g_return_if_fail (templ != NULL);
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basertppayload->sinkpad = gst_pad_new_from_template (templ, "sink");
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gst_pad_set_setcaps_function (basertppayload->sinkpad,
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gst_basertppayload_sink_setcaps);
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gst_pad_set_getcaps_function (basertppayload->sinkpad,
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gst_basertppayload_sink_getcaps);
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gst_pad_set_event_function (basertppayload->sinkpad,
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gst_basertppayload_event);
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gst_pad_set_chain_function (basertppayload->sinkpad,
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gst_basertppayload_chain);
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gst_element_add_pad (GST_ELEMENT (basertppayload), basertppayload->sinkpad);
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basertppayload->seq_rand = g_rand_new ();
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basertppayload->ssrc_rand = g_rand_new ();
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basertppayload->ts_rand = g_rand_new ();
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basertppayload->mtu = DEFAULT_MTU;
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basertppayload->pt = DEFAULT_PT;
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basertppayload->seqnum_offset = DEFAULT_SEQNUM_OFFSET;
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basertppayload->ssrc = DEFAULT_SSRC;
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basertppayload->ts_offset = DEFAULT_TIMESTAMP_OFFSET;
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priv->seqnum_offset_random = (basertppayload->seqnum_offset == -1);
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priv->ts_offset_random = (basertppayload->ts_offset == -1);
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priv->ssrc_random = (basertppayload->ssrc == -1);
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basertppayload->max_ptime = DEFAULT_MAX_PTIME;
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basertppayload->min_ptime = DEFAULT_MIN_PTIME;
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basertppayload->media = NULL;
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basertppayload->encoding_name = NULL;
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basertppayload->clock_rate = 0;
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}
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static void
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gst_basertppayload_finalize (GObject * object)
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{
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GstBaseRTPPayload *basertppayload;
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basertppayload = GST_BASE_RTP_PAYLOAD (object);
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g_rand_free (basertppayload->seq_rand);
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basertppayload->seq_rand = NULL;
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g_rand_free (basertppayload->ssrc_rand);
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basertppayload->ssrc_rand = NULL;
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g_rand_free (basertppayload->ts_rand);
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basertppayload->ts_rand = NULL;
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g_free (basertppayload->media);
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basertppayload->media = NULL;
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g_free (basertppayload->encoding_name);
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basertppayload->encoding_name = NULL;
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gboolean
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gst_basertppayload_sink_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstBaseRTPPayload *basertppayload;
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GstBaseRTPPayloadClass *basertppayload_class;
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gboolean ret = TRUE;
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GST_DEBUG_OBJECT (pad, "setting caps %" GST_PTR_FORMAT, caps);
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basertppayload = GST_BASE_RTP_PAYLOAD (gst_pad_get_parent (pad));
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basertppayload_class = GST_BASE_RTP_PAYLOAD_GET_CLASS (basertppayload);
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if (basertppayload_class->set_caps)
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ret = basertppayload_class->set_caps (basertppayload, caps);
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gst_object_unref (basertppayload);
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return ret;
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}
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static GstCaps *
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gst_basertppayload_sink_getcaps (GstPad * pad)
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{
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GstBaseRTPPayload *basertppayload;
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GstBaseRTPPayloadClass *basertppayload_class;
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GstCaps *caps = NULL;
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GST_DEBUG_OBJECT (pad, "getting caps");
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basertppayload = GST_BASE_RTP_PAYLOAD (gst_pad_get_parent (pad));
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basertppayload_class = GST_BASE_RTP_PAYLOAD_GET_CLASS (basertppayload);
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if (basertppayload_class->get_caps)
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caps = basertppayload_class->get_caps (basertppayload, pad);
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if (!caps) {
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caps = GST_PAD_TEMPLATE_CAPS (GST_PAD_PAD_TEMPLATE (pad));
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GST_DEBUG_OBJECT (pad,
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"using pad template %p with caps %p %" GST_PTR_FORMAT,
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GST_PAD_PAD_TEMPLATE (pad), caps, caps);
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caps = gst_caps_ref (caps);
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}
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gst_object_unref (basertppayload);
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return caps;
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}
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static gboolean
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gst_basertppayload_event (GstPad * pad, GstEvent * event)
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{
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GstBaseRTPPayload *basertppayload;
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GstBaseRTPPayloadClass *basertppayload_class;
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gboolean res;
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basertppayload = GST_BASE_RTP_PAYLOAD (gst_pad_get_parent (pad));
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basertppayload_class = GST_BASE_RTP_PAYLOAD_GET_CLASS (basertppayload);
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if (basertppayload_class->handle_event) {
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res = basertppayload_class->handle_event (pad, event);
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if (res)
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goto done;
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}
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_FLUSH_START:
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res = gst_pad_event_default (pad, event);
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break;
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case GST_EVENT_FLUSH_STOP:
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res = gst_pad_event_default (pad, event);
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gst_segment_init (&basertppayload->segment, GST_FORMAT_UNDEFINED);
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break;
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case GST_EVENT_NEWSEGMENT:
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{
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gboolean update;
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gdouble rate;
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GstFormat fmt;
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gint64 start, stop, position;
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gst_event_parse_new_segment (event, &update, &rate, &fmt, &start, &stop,
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&position);
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gst_segment_set_newsegment (&basertppayload->segment, update, rate, fmt,
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start, stop, position);
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/* fallthrough */
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}
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default:
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res = gst_pad_event_default (pad, event);
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break;
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}
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done:
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gst_object_unref (basertppayload);
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return res;
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}
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static GstFlowReturn
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gst_basertppayload_chain (GstPad * pad, GstBuffer * buffer)
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{
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GstBaseRTPPayload *basertppayload;
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GstBaseRTPPayloadClass *basertppayload_class;
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GstFlowReturn ret;
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basertppayload = GST_BASE_RTP_PAYLOAD (gst_pad_get_parent (pad));
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basertppayload_class = GST_BASE_RTP_PAYLOAD_GET_CLASS (basertppayload);
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if (!basertppayload_class->handle_buffer)
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goto no_function;
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ret = basertppayload_class->handle_buffer (basertppayload, buffer);
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gst_object_unref (basertppayload);
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return ret;
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/* ERRORS */
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no_function:
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{
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GST_ELEMENT_ERROR (basertppayload, STREAM, NOT_IMPLEMENTED, (NULL),
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("subclass did not implement handle_buffer function"));
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gst_object_unref (basertppayload);
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gst_buffer_unref (buffer);
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return GST_FLOW_ERROR;
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}
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}
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/**
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* gst_basertppayload_set_options:
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* @payload: a #GstBaseRTPPayload
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* @media: the media type (typically "audio" or "video")
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* @dynamic: if the payload type is dynamic
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* @encoding_name: the encoding name
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* @clock_rate: the clock rate of the media
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*
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* Set the rtp options of the payloader. These options will be set in the caps
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* of the payloader. Subclasses must call this method before calling
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* gst_basertppayload_push() or gst_basertppayload_set_outcaps().
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*/
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void
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gst_basertppayload_set_options (GstBaseRTPPayload * payload,
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gchar * media, gboolean dynamic, gchar * encoding_name, guint32 clock_rate)
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{
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g_return_if_fail (payload != NULL);
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g_return_if_fail (clock_rate != 0);
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g_free (payload->media);
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payload->media = g_strdup (media);
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payload->dynamic = dynamic;
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g_free (payload->encoding_name);
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payload->encoding_name = g_strdup (encoding_name);
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payload->clock_rate = clock_rate;
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}
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static gboolean
|
|
copy_fixed (GQuark field_id, const GValue * value, GstStructure * dest)
|
|
{
|
|
if (gst_value_is_fixed (value)) {
|
|
gst_structure_id_set_value (dest, field_id, value);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gst_basertppayload_set_outcaps:
|
|
* @payload: a #GstBaseRTPPayload
|
|
* @fieldname: the first field name or %NULL
|
|
* @...: field values
|
|
*
|
|
* Configure the output caps with the optional parameters.
|
|
*
|
|
* Variable arguments should be in the form field name, field type
|
|
* (as a GType), value(s). The last variable argument should be NULL.
|
|
*
|
|
* Returns: %TRUE if the caps could be set.
|
|
*/
|
|
gboolean
|
|
gst_basertppayload_set_outcaps (GstBaseRTPPayload * payload, gchar * fieldname,
|
|
...)
|
|
{
|
|
GstCaps *srccaps, *peercaps;
|
|
gboolean res;
|
|
|
|
/* fill in the defaults, there properties cannot be negotiated. */
|
|
srccaps = gst_caps_new_simple ("application/x-rtp",
|
|
"media", G_TYPE_STRING, payload->media,
|
|
"clock-rate", G_TYPE_INT, payload->clock_rate,
|
|
"encoding-name", G_TYPE_STRING, payload->encoding_name, NULL);
|
|
|
|
GST_DEBUG_OBJECT (payload, "defaults: %" GST_PTR_FORMAT, srccaps);
|
|
|
|
if (fieldname) {
|
|
va_list varargs;
|
|
|
|
/* override with custom properties */
|
|
va_start (varargs, fieldname);
|
|
gst_caps_set_simple_valist (srccaps, fieldname, varargs);
|
|
va_end (varargs);
|
|
|
|
GST_DEBUG_OBJECT (payload, "custom added: %" GST_PTR_FORMAT, srccaps);
|
|
}
|
|
|
|
/* the peer caps can override some of the defaults */
|
|
peercaps = gst_pad_peer_get_caps (payload->srcpad);
|
|
if (peercaps == NULL) {
|
|
/* no peer caps, just add the other properties */
|
|
gst_caps_set_simple (srccaps,
|
|
"payload", G_TYPE_INT, GST_BASE_RTP_PAYLOAD_PT (payload),
|
|
"ssrc", G_TYPE_UINT, payload->current_ssrc,
|
|
"clock-base", G_TYPE_UINT, payload->ts_base,
|
|
"seqnum-base", G_TYPE_UINT, payload->seqnum_base, NULL);
|
|
|
|
GST_DEBUG_OBJECT (payload, "no peer caps: %" GST_PTR_FORMAT, srccaps);
|
|
} else {
|
|
GstCaps *temp;
|
|
GstStructure *s, *d;
|
|
const GValue *value;
|
|
gint pt;
|
|
|
|
/* peer provides caps we can use to fixate, intersect. This always returns a
|
|
* writable caps. */
|
|
temp = gst_caps_intersect (srccaps, peercaps);
|
|
gst_caps_unref (srccaps);
|
|
gst_caps_unref (peercaps);
|
|
|
|
/* now fixate, start by taking the first caps */
|
|
gst_caps_truncate (temp);
|
|
|
|
/* get first structure */
|
|
s = gst_caps_get_structure (temp, 0);
|
|
|
|
if (gst_structure_get_int (s, "payload", &pt)) {
|
|
/* use peer pt */
|
|
GST_BASE_RTP_PAYLOAD_PT (payload) = pt;
|
|
GST_LOG_OBJECT (payload, "using peer pt %d", pt);
|
|
} else {
|
|
if (gst_structure_has_field (s, "payload")) {
|
|
/* can only fixate if there is a field */
|
|
gst_structure_fixate_field_nearest_int (s, "payload",
|
|
GST_BASE_RTP_PAYLOAD_PT (payload));
|
|
gst_structure_get_int (s, "payload", &pt);
|
|
GST_LOG_OBJECT (payload, "using peer pt %d", pt);
|
|
} else {
|
|
/* no pt field, use the internal pt */
|
|
pt = GST_BASE_RTP_PAYLOAD_PT (payload);
|
|
gst_structure_set (s, "payload", G_TYPE_INT, pt, NULL);
|
|
GST_LOG_OBJECT (payload, "using internal pt %d", pt);
|
|
}
|
|
}
|
|
|
|
if (gst_structure_has_field_typed (s, "ssrc", G_TYPE_UINT)) {
|
|
value = gst_structure_get_value (s, "ssrc");
|
|
payload->current_ssrc = g_value_get_uint (value);
|
|
GST_LOG_OBJECT (payload, "using peer ssrc %08x", payload->current_ssrc);
|
|
} else {
|
|
/* FIXME, fixate_nearest_uint would be even better */
|
|
gst_structure_set (s, "ssrc", G_TYPE_UINT, payload->current_ssrc, NULL);
|
|
GST_LOG_OBJECT (payload, "using internal ssrc %08x",
|
|
payload->current_ssrc);
|
|
}
|
|
|
|
if (gst_structure_has_field_typed (s, "clock-base", G_TYPE_UINT)) {
|
|
value = gst_structure_get_value (s, "clock-base");
|
|
payload->ts_base = g_value_get_uint (value);
|
|
GST_LOG_OBJECT (payload, "using peer clock-base %u", payload->ts_base);
|
|
} else {
|
|
/* FIXME, fixate_nearest_uint would be even better */
|
|
gst_structure_set (s, "clock-base", G_TYPE_UINT, payload->ts_base, NULL);
|
|
GST_LOG_OBJECT (payload, "using internal clock-base %u",
|
|
payload->ts_base);
|
|
}
|
|
if (gst_structure_has_field_typed (s, "seqnum-base", G_TYPE_UINT)) {
|
|
value = gst_structure_get_value (s, "seqnum-base");
|
|
payload->seqnum_base = g_value_get_uint (value);
|
|
GST_LOG_OBJECT (payload, "using peer seqnum-base %u",
|
|
payload->seqnum_base);
|
|
} else {
|
|
/* FIXME, fixate_nearest_uint would be even better */
|
|
gst_structure_set (s, "seqnum-base", G_TYPE_UINT, payload->seqnum_base,
|
|
NULL);
|
|
GST_LOG_OBJECT (payload, "using internal seqnum-base %u",
|
|
payload->seqnum_base);
|
|
}
|
|
|
|
/* make the target caps by copying over all the fixed caps, removing the
|
|
* unfixed caps. */
|
|
srccaps = gst_caps_new_simple (gst_structure_get_name (s), NULL);
|
|
d = gst_caps_get_structure (srccaps, 0);
|
|
|
|
gst_structure_foreach (s, (GstStructureForeachFunc) copy_fixed, d);
|
|
|
|
gst_caps_unref (temp);
|
|
|
|
GST_DEBUG_OBJECT (payload, "with peer caps: %" GST_PTR_FORMAT, srccaps);
|
|
}
|
|
|
|
res = gst_pad_set_caps (GST_BASE_RTP_PAYLOAD_SRCPAD (payload), srccaps);
|
|
gst_caps_unref (srccaps);
|
|
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* gst_basertppayload_is_filled:
|
|
* @payload: a #GstBaseRTPPayload
|
|
* @size: the size of the packet
|
|
* @duration: the duration of the packet
|
|
*
|
|
* Check if the packet with @size and @duration would exceed the configure
|
|
* maximum size.
|
|
*
|
|
* Returns: %TRUE if the packet of @size and @duration would exceed the
|
|
* configured MTU or max_ptime.
|
|
*/
|
|
gboolean
|
|
gst_basertppayload_is_filled (GstBaseRTPPayload * payload,
|
|
guint size, GstClockTime duration)
|
|
{
|
|
if (size > payload->mtu)
|
|
return TRUE;
|
|
|
|
if (payload->max_ptime != -1 && duration >= payload->max_ptime)
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
* gst_basertppayload_push:
|
|
* @payload: a #GstBaseRTPPayload
|
|
* @buffer: a #GstBuffer
|
|
*
|
|
* Push @buffer to the peer element of the payloader. The SSRC, payload type,
|
|
* seqnum and timestamp of the RTP buffer will be updated first.
|
|
*
|
|
* This function takes ownership of @buffer.
|
|
*
|
|
* Returns: a #GstFlowReturn.
|
|
*/
|
|
GstFlowReturn
|
|
gst_basertppayload_push (GstBaseRTPPayload * payload, GstBuffer * buffer)
|
|
{
|
|
GstFlowReturn res;
|
|
GstClockTime timestamp;
|
|
guint32 rtptime;
|
|
GstBaseRTPPayloadPrivate *priv;
|
|
|
|
if (payload->clock_rate == 0)
|
|
goto no_rate;
|
|
|
|
priv = payload->priv;
|
|
|
|
gst_rtp_buffer_set_ssrc (buffer, payload->current_ssrc);
|
|
|
|
gst_rtp_buffer_set_payload_type (buffer, payload->pt);
|
|
|
|
/* update first, so that the property is set to the last
|
|
* seqnum pushed */
|
|
payload->seqnum = priv->next_seqnum;
|
|
gst_rtp_buffer_set_seq (buffer, payload->seqnum);
|
|
|
|
/* can wrap around, which is perfectly fine */
|
|
priv->next_seqnum++;
|
|
|
|
/* add our random offset to the timestamp */
|
|
rtptime = payload->ts_base;
|
|
|
|
timestamp = GST_BUFFER_TIMESTAMP (buffer);
|
|
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
|
|
gint64 rtime;
|
|
|
|
rtime = gst_segment_to_running_time (&payload->segment, GST_FORMAT_TIME,
|
|
timestamp);
|
|
|
|
rtime = gst_util_uint64_scale_int (rtime, payload->clock_rate, GST_SECOND);
|
|
|
|
/* add running_time in clock-rate units to the base timestamp */
|
|
rtptime += rtime;
|
|
} else {
|
|
/* no timestamp to convert, take previous timestamp */
|
|
rtptime = payload->timestamp;
|
|
}
|
|
gst_rtp_buffer_set_timestamp (buffer, rtptime);
|
|
|
|
payload->timestamp = rtptime;
|
|
|
|
/* set caps */
|
|
gst_buffer_set_caps (buffer, GST_PAD_CAPS (payload->srcpad));
|
|
|
|
GST_LOG_OBJECT (payload,
|
|
"Pushing packet size %d, seq=%d, rtptime=%u, timestamp %" GST_TIME_FORMAT,
|
|
GST_BUFFER_SIZE (buffer), payload->seqnum, rtptime,
|
|
GST_TIME_ARGS (timestamp));
|
|
|
|
res = gst_pad_push (payload->srcpad, buffer);
|
|
|
|
return res;
|
|
|
|
/* ERRORS */
|
|
no_rate:
|
|
{
|
|
GST_ELEMENT_ERROR (payload, STREAM, NOT_IMPLEMENTED, (NULL),
|
|
("subclass did not specify clock-rate"));
|
|
gst_buffer_unref (buffer);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_basertppayload_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstBaseRTPPayload *basertppayload;
|
|
GstBaseRTPPayloadPrivate *priv;
|
|
gint64 val;
|
|
|
|
basertppayload = GST_BASE_RTP_PAYLOAD (object);
|
|
priv = basertppayload->priv;
|
|
|
|
switch (prop_id) {
|
|
case PROP_MTU:
|
|
basertppayload->mtu = g_value_get_uint (value);
|
|
break;
|
|
case PROP_PT:
|
|
basertppayload->pt = g_value_get_uint (value);
|
|
break;
|
|
case PROP_SSRC:
|
|
val = g_value_get_uint (value);
|
|
basertppayload->ssrc = val;
|
|
priv->ssrc_random = FALSE;
|
|
break;
|
|
case PROP_TIMESTAMP_OFFSET:
|
|
val = g_value_get_uint (value);
|
|
basertppayload->ts_offset = val;
|
|
priv->ts_offset_random = FALSE;
|
|
break;
|
|
case PROP_SEQNUM_OFFSET:
|
|
val = g_value_get_int (value);
|
|
basertppayload->seqnum_offset = val;
|
|
priv->seqnum_offset_random = (val == -1);
|
|
GST_DEBUG_OBJECT (basertppayload, "seqnum offset 0x%04x, random %d",
|
|
basertppayload->seqnum_offset, priv->seqnum_offset_random);
|
|
break;
|
|
case PROP_MAX_PTIME:
|
|
basertppayload->max_ptime = g_value_get_int64 (value);
|
|
break;
|
|
case PROP_MIN_PTIME:
|
|
basertppayload->min_ptime = g_value_get_int64 (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_basertppayload_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstBaseRTPPayload *basertppayload;
|
|
GstBaseRTPPayloadPrivate *priv;
|
|
|
|
basertppayload = GST_BASE_RTP_PAYLOAD (object);
|
|
priv = basertppayload->priv;
|
|
|
|
switch (prop_id) {
|
|
case PROP_MTU:
|
|
g_value_set_uint (value, basertppayload->mtu);
|
|
break;
|
|
case PROP_PT:
|
|
g_value_set_uint (value, basertppayload->pt);
|
|
break;
|
|
case PROP_SSRC:
|
|
if (priv->ssrc_random)
|
|
g_value_set_uint (value, -1);
|
|
else
|
|
g_value_set_uint (value, basertppayload->ssrc);
|
|
break;
|
|
case PROP_TIMESTAMP_OFFSET:
|
|
if (priv->ts_offset_random)
|
|
g_value_set_uint (value, -1);
|
|
else
|
|
g_value_set_uint (value, (guint32) basertppayload->ts_offset);
|
|
break;
|
|
case PROP_SEQNUM_OFFSET:
|
|
if (priv->seqnum_offset_random)
|
|
g_value_set_int (value, -1);
|
|
else
|
|
g_value_set_int (value, (guint16) basertppayload->seqnum_offset);
|
|
break;
|
|
case PROP_MAX_PTIME:
|
|
g_value_set_int64 (value, basertppayload->max_ptime);
|
|
break;
|
|
case PROP_MIN_PTIME:
|
|
g_value_set_int64 (value, basertppayload->min_ptime);
|
|
break;
|
|
case PROP_TIMESTAMP:
|
|
g_value_set_uint (value, basertppayload->timestamp);
|
|
break;
|
|
case PROP_SEQNUM:
|
|
g_value_set_uint (value, basertppayload->seqnum);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_basertppayload_change_state (GstElement * element,
|
|
GstStateChange transition)
|
|
{
|
|
GstBaseRTPPayload *basertppayload;
|
|
GstBaseRTPPayloadPrivate *priv;
|
|
GstStateChangeReturn ret;
|
|
|
|
basertppayload = GST_BASE_RTP_PAYLOAD (element);
|
|
priv = basertppayload->priv;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
gst_segment_init (&basertppayload->segment, GST_FORMAT_UNDEFINED);
|
|
|
|
if (priv->seqnum_offset_random)
|
|
basertppayload->seqnum_base =
|
|
g_rand_int_range (basertppayload->seq_rand, 0, G_MAXUINT16);
|
|
else
|
|
basertppayload->seqnum_base = basertppayload->seqnum_offset;
|
|
priv->next_seqnum = basertppayload->seqnum_base;
|
|
basertppayload->seqnum = basertppayload->seqnum_base;
|
|
|
|
if (priv->ssrc_random)
|
|
basertppayload->current_ssrc = g_rand_int (basertppayload->ssrc_rand);
|
|
else
|
|
basertppayload->current_ssrc = basertppayload->ssrc;
|
|
|
|
if (priv->ts_offset_random)
|
|
basertppayload->ts_base = g_rand_int (basertppayload->ts_rand);
|
|
else
|
|
basertppayload->ts_base = basertppayload->ts_offset;
|
|
basertppayload->timestamp = basertppayload->ts_base;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|