gstreamer/gst-libs/gst/rtp/gstbasertppayload.c
Sebastian Dröge 49deb0c05d Use G_PARAM_STATIC_STRINGS everywhere for GParamSpecs that use static strings (i.e. all). This gives us less memory u...
Original commit message from CVS:
* configure.ac:
* ext/alsa/gstalsamixerelement.c:
(gst_alsa_mixer_element_class_init):
* ext/alsa/gstalsasink.c: (gst_alsasink_class_init):
* ext/alsa/gstalsasrc.c: (gst_alsasrc_class_init):
* ext/cdparanoia/gstcdparanoiasrc.c:
(gst_cd_paranoia_src_class_init):
* ext/gio/gstgiosink.c: (gst_gio_sink_class_init):
* ext/gio/gstgiosrc.c: (gst_gio_src_class_init):
* ext/gio/gstgiostreamsink.c: (gst_gio_stream_sink_class_init):
* ext/gio/gstgiostreamsrc.c: (gst_gio_stream_src_class_init):
* ext/gnomevfs/gstgnomevfssink.c: (gst_gnome_vfs_sink_class_init):
* ext/gnomevfs/gstgnomevfssrc.c: (gst_gnome_vfs_src_class_init):
* ext/ogg/gstoggmux.c: (gst_ogg_mux_class_init):
* ext/pango/gsttextoverlay.c: (gst_text_overlay_class_init):
* ext/pango/gsttextrender.c: (gst_text_render_class_init):
* ext/theora/theoradec.c: (gst_theora_dec_class_init):
* ext/theora/theoraenc.c: (gst_theora_enc_class_init):
* ext/theora/theoraparse.c: (gst_theora_parse_class_init):
* ext/vorbis/vorbisenc.c: (gst_vorbis_enc_class_init):
* gst-libs/gst/audio/gstaudiofiltertemplate.c:
(gst_audio_filter_template_class_init):
* gst-libs/gst/audio/gstbaseaudiosink.c:
(gst_base_audio_sink_class_init):
* gst-libs/gst/audio/gstbaseaudiosrc.c:
(gst_base_audio_src_class_init):
* gst-libs/gst/cdda/gstcddabasesrc.c:
(gst_cdda_base_src_class_init):
* gst-libs/gst/interfaces/mixertrack.c:
(gst_mixer_track_class_init):
* gst-libs/gst/rtp/gstbasertpdepayload.c:
(gst_base_rtp_depayload_class_init):
* gst-libs/gst/rtp/gstbasertppayload.c:
(gst_basertppayload_class_init):
* gst/audioconvert/gstaudioconvert.c:
(gst_audio_convert_class_init):
* gst/audiorate/gstaudiorate.c: (gst_audio_rate_class_init):
* gst/audioresample/gstaudioresample.c:
(gst_audioresample_class_init):
* gst/audiotestsrc/gstaudiotestsrc.c:
(gst_audio_test_src_class_init):
* gst/gdp/gstgdppay.c: (gst_gdp_pay_class_init):
* gst/playback/gstdecodebin2.c: (gst_decode_bin_class_init):
* gst/playback/gstplaybasebin.c: (gst_play_base_bin_class_init),
(preroll_unlinked):
* gst/playback/gstplaybin.c: (gst_play_bin_class_init):
* gst/playback/gstplaybin2.c: (gst_play_bin_class_init):
* gst/playback/gstplaysink.c: (gst_play_sink_class_init):
* gst/playback/gstqueue2.c: (gst_queue_class_init):
* gst/playback/gststreaminfo.c: (gst_stream_info_class_init):
* gst/playback/gststreamselector.c: (gst_selector_pad_class_init),
(gst_stream_selector_class_init):
* gst/playback/gsturidecodebin.c: (gst_uri_decode_bin_class_init):
* gst/subparse/gstsubparse.c: (gst_sub_parse_class_init):
* gst/tcp/gstmultifdsink.c: (gst_multi_fd_sink_class_init):
* gst/tcp/gsttcpclientsink.c: (gst_tcp_client_sink_class_init):
* gst/tcp/gsttcpclientsrc.c: (gst_tcp_client_src_class_init):
* gst/tcp/gsttcpserversink.c: (gst_tcp_server_sink_class_init):
* gst/tcp/gsttcpserversrc.c: (gst_tcp_server_src_class_init):
* gst/videorate/gstvideorate.c: (gst_video_rate_class_init):
* gst/videoscale/gstvideoscale.c: (gst_video_scale_class_init):
* gst/videotestsrc/gstvideotestsrc.c:
(gst_video_test_src_class_init):
* gst/volume/gstvolume.c: (gst_volume_class_init):
* sys/v4l/gstv4lelement.c: (gst_v4lelement_class_init):
* sys/v4l/gstv4lmjpegsink.c: (gst_v4lmjpegsink_class_init):
* sys/v4l/gstv4lmjpegsrc.c: (gst_v4lmjpegsrc_class_init):
* sys/v4l/gstv4lsrc.c: (gst_v4lsrc_class_init):
* sys/ximage/ximagesink.c: (gst_ximagesink_class_init):
* sys/xvimage/xvimagesink.c: (gst_xvimagesink_class_init):
Use G_PARAM_STATIC_STRINGS everywhere for GParamSpecs that use
static strings (i.e. all). This gives us less memory usage,
fewer allocations and thus less memory defragmentation. Depend
on core CVS for this. Fixes bug #523806.
2008-03-22 15:00:53 +00:00

856 lines
26 KiB
C

/* GStreamer
* Copyright (C) <2005> Wim Taymans <wim@fluendo.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more
*/
/**
* SECTION:gstbasertppayload
* @short_description: Base class for RTP payloader
*
* <refsect2>
* <para>
* Provides a base class for RTP payloaders
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include <gst/rtp/gstrtpbuffer.h>
#include "gstbasertppayload.h"
GST_DEBUG_CATEGORY_STATIC (basertppayload_debug);
#define GST_CAT_DEFAULT (basertppayload_debug)
#define GST_BASE_RTP_PAYLOAD_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), GST_TYPE_BASE_RTP_PAYLOAD, GstBaseRTPPayloadPrivate))
struct _GstBaseRTPPayloadPrivate
{
gboolean ts_offset_random;
gboolean seqnum_offset_random;
gboolean ssrc_random;
guint16 next_seqnum;
GstClockTime rt_base;
};
/* BaseRTPPayload signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
/* FIXME 0.11, a better default is the Ethernet MTU of
* 1500 - sizeof(headers) as pointed out by marcelm in IRC:
* So an Ethernet MTU of 1500, minus 60 for the max IP, minus 8 for UDP, gives
* 1432 bytes or so. And that should be adjusted downward further for other
* encapsulations like PPPoE, so 1400 at most.
*/
#define DEFAULT_MTU 1400
#define DEFAULT_PT 96
#define DEFAULT_SSRC -1
#define DEFAULT_TIMESTAMP_OFFSET -1
#define DEFAULT_SEQNUM_OFFSET -1
#define DEFAULT_MAX_PTIME -1
#define DEFAULT_MIN_PTIME 0
enum
{
PROP_0,
PROP_MTU,
PROP_PT,
PROP_SSRC,
PROP_TIMESTAMP_OFFSET,
PROP_SEQNUM_OFFSET,
PROP_MAX_PTIME,
PROP_MIN_PTIME,
PROP_TIMESTAMP,
PROP_SEQNUM
};
static void gst_basertppayload_class_init (GstBaseRTPPayloadClass * klass);
static void gst_basertppayload_base_init (GstBaseRTPPayloadClass * klass);
static void gst_basertppayload_init (GstBaseRTPPayload * basertppayload,
gpointer g_class);
static void gst_basertppayload_finalize (GObject * object);
static gboolean gst_basertppayload_setcaps (GstPad * pad, GstCaps * caps);
static GstCaps *gst_basertppayload_getcaps (GstPad * pad);
static gboolean gst_basertppayload_event (GstPad * pad, GstEvent * event);
static GstFlowReturn gst_basertppayload_chain (GstPad * pad,
GstBuffer * buffer);
static void gst_basertppayload_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_basertppayload_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstStateChangeReturn gst_basertppayload_change_state (GstElement *
element, GstStateChange transition);
static GstElementClass *parent_class = NULL;
/* FIXME 0.11: API should be changed to gst_base_typ_payload_xyz */
GType
gst_basertppayload_get_type (void)
{
static GType basertppayload_type = 0;
if (!basertppayload_type) {
static const GTypeInfo basertppayload_info = {
sizeof (GstBaseRTPPayloadClass),
(GBaseInitFunc) gst_basertppayload_base_init,
NULL,
(GClassInitFunc) gst_basertppayload_class_init,
NULL,
NULL,
sizeof (GstBaseRTPPayload),
0,
(GInstanceInitFunc) gst_basertppayload_init,
};
basertppayload_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstBaseRTPPayload",
&basertppayload_info, G_TYPE_FLAG_ABSTRACT);
}
return basertppayload_type;
}
static void
gst_basertppayload_base_init (GstBaseRTPPayloadClass * klass)
{
}
static void
gst_basertppayload_class_init (GstBaseRTPPayloadClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
g_type_class_add_private (klass, sizeof (GstBaseRTPPayloadPrivate));
parent_class = g_type_class_peek_parent (klass);
gobject_class->finalize = gst_basertppayload_finalize;
gobject_class->set_property = gst_basertppayload_set_property;
gobject_class->get_property = gst_basertppayload_get_property;
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MTU,
g_param_spec_uint ("mtu", "MTU",
"Maximum size of one packet",
28, G_MAXUINT, DEFAULT_MTU,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PT,
g_param_spec_uint ("pt", "payload type",
"The payload type of the packets", 0, 0x80, DEFAULT_PT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SSRC,
g_param_spec_uint ("ssrc", "SSRC",
"The SSRC of the packets (default == random)", 0, G_MAXUINT32,
DEFAULT_SSRC, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass),
PROP_TIMESTAMP_OFFSET, g_param_spec_uint ("timestamp-offset",
"Timestamp Offset",
"Offset to add to all outgoing timestamps (default = random)", 0,
G_MAXUINT32, DEFAULT_TIMESTAMP_OFFSET,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SEQNUM_OFFSET,
g_param_spec_int ("seqnum-offset", "Sequence number Offset",
"Offset to add to all outgoing seqnum (-1 = random)", -1, G_MAXUINT16,
DEFAULT_SEQNUM_OFFSET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MAX_PTIME,
g_param_spec_int64 ("max-ptime", "Max packet time",
"Maximum duration of the packet data in ns (-1 = unlimited up to MTU)",
-1, G_MAXINT64, DEFAULT_MAX_PTIME,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstBaseRTPAudioPayload:min-ptime:
*
* Minimum duration of the packet data in ns (can't go above MTU)
*
* Since: 0.10.13
**/
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MIN_PTIME,
g_param_spec_int64 ("min-ptime", "Min packet time",
"Minimum duration of the packet data in ns (can't go above MTU)",
0, G_MAXINT64, DEFAULT_MIN_PTIME,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_TIMESTAMP,
g_param_spec_uint ("timestamp", "Timestamp",
"The RTP timestamp of the last processed packet",
0, G_MAXUINT32, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SEQNUM,
g_param_spec_uint ("seqnum", "Sequence number",
"The RTP sequence number of the last processed packet",
0, G_MAXUINT16, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
gstelement_class->change_state = gst_basertppayload_change_state;
GST_DEBUG_CATEGORY_INIT (basertppayload_debug, "basertppayload", 0,
"Base class for RTP Payloaders");
}
static void
gst_basertppayload_init (GstBaseRTPPayload * basertppayload, gpointer g_class)
{
GstPadTemplate *templ;
GstBaseRTPPayloadPrivate *priv;
basertppayload->priv = priv =
GST_BASE_RTP_PAYLOAD_GET_PRIVATE (basertppayload);
templ =
gst_element_class_get_pad_template (GST_ELEMENT_CLASS (g_class), "src");
g_return_if_fail (templ != NULL);
basertppayload->srcpad = gst_pad_new_from_template (templ, "src");
gst_element_add_pad (GST_ELEMENT (basertppayload), basertppayload->srcpad);
templ =
gst_element_class_get_pad_template (GST_ELEMENT_CLASS (g_class), "sink");
g_return_if_fail (templ != NULL);
basertppayload->sinkpad = gst_pad_new_from_template (templ, "sink");
gst_pad_set_setcaps_function (basertppayload->sinkpad,
gst_basertppayload_setcaps);
gst_pad_set_getcaps_function (basertppayload->sinkpad,
gst_basertppayload_getcaps);
gst_pad_set_event_function (basertppayload->sinkpad,
gst_basertppayload_event);
gst_pad_set_chain_function (basertppayload->sinkpad,
gst_basertppayload_chain);
gst_element_add_pad (GST_ELEMENT (basertppayload), basertppayload->sinkpad);
basertppayload->seq_rand = g_rand_new ();
basertppayload->ssrc_rand = g_rand_new ();
basertppayload->ts_rand = g_rand_new ();
basertppayload->mtu = DEFAULT_MTU;
basertppayload->pt = DEFAULT_PT;
basertppayload->seqnum_offset = DEFAULT_SEQNUM_OFFSET;
basertppayload->ssrc = DEFAULT_SSRC;
basertppayload->ts_offset = DEFAULT_TIMESTAMP_OFFSET;
priv->seqnum_offset_random = (basertppayload->seqnum_offset == -1);
priv->ts_offset_random = (basertppayload->ts_offset == -1);
priv->ssrc_random = (basertppayload->ssrc == -1);
basertppayload->max_ptime = DEFAULT_MAX_PTIME;
basertppayload->min_ptime = DEFAULT_MIN_PTIME;
basertppayload->media = NULL;
basertppayload->encoding_name = NULL;
basertppayload->clock_rate = 0;
}
static void
gst_basertppayload_finalize (GObject * object)
{
GstBaseRTPPayload *basertppayload;
basertppayload = GST_BASE_RTP_PAYLOAD (object);
g_rand_free (basertppayload->seq_rand);
basertppayload->seq_rand = NULL;
g_rand_free (basertppayload->ssrc_rand);
basertppayload->ssrc_rand = NULL;
g_rand_free (basertppayload->ts_rand);
basertppayload->ts_rand = NULL;
g_free (basertppayload->media);
basertppayload->media = NULL;
g_free (basertppayload->encoding_name);
basertppayload->encoding_name = NULL;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_basertppayload_setcaps (GstPad * pad, GstCaps * caps)
{
GstBaseRTPPayload *basertppayload;
GstBaseRTPPayloadClass *basertppayload_class;
gboolean ret = TRUE;
GST_DEBUG_OBJECT (pad, "setting caps %" GST_PTR_FORMAT, caps);
basertppayload = GST_BASE_RTP_PAYLOAD (gst_pad_get_parent (pad));
basertppayload_class = GST_BASE_RTP_PAYLOAD_GET_CLASS (basertppayload);
if (basertppayload_class->set_caps)
ret = basertppayload_class->set_caps (basertppayload, caps);
gst_object_unref (basertppayload);
return ret;
}
static GstCaps *
gst_basertppayload_getcaps (GstPad * pad)
{
GstBaseRTPPayload *basertppayload;
GstBaseRTPPayloadClass *basertppayload_class;
GstCaps *caps = NULL;
GST_DEBUG_OBJECT (pad, "getting caps");
basertppayload = GST_BASE_RTP_PAYLOAD (gst_pad_get_parent (pad));
basertppayload_class = GST_BASE_RTP_PAYLOAD_GET_CLASS (basertppayload);
if (basertppayload_class->get_caps)
caps = basertppayload_class->get_caps (basertppayload, pad);
if (!caps) {
caps = GST_PAD_TEMPLATE_CAPS (GST_PAD_PAD_TEMPLATE (pad));
GST_DEBUG_OBJECT (pad,
"using pad template %p with caps %p %" GST_PTR_FORMAT,
GST_PAD_PAD_TEMPLATE (pad), caps, caps);
caps = gst_caps_ref (caps);
}
gst_object_unref (basertppayload);
return caps;
}
static gboolean
gst_basertppayload_event (GstPad * pad, GstEvent * event)
{
GstBaseRTPPayload *basertppayload;
GstBaseRTPPayloadClass *basertppayload_class;
gboolean res;
basertppayload = GST_BASE_RTP_PAYLOAD (gst_pad_get_parent (pad));
basertppayload_class = GST_BASE_RTP_PAYLOAD_GET_CLASS (basertppayload);
if (basertppayload_class->handle_event) {
res = basertppayload_class->handle_event (pad, event);
if (res)
goto done;
}
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_START:
res = gst_pad_event_default (pad, event);
break;
case GST_EVENT_FLUSH_STOP:
res = gst_pad_event_default (pad, event);
gst_segment_init (&basertppayload->segment, GST_FORMAT_UNDEFINED);
break;
case GST_EVENT_NEWSEGMENT:
{
gboolean update;
gdouble rate;
GstFormat fmt;
gint64 start, stop, position;
gst_event_parse_new_segment (event, &update, &rate, &fmt, &start, &stop,
&position);
gst_segment_set_newsegment (&basertppayload->segment, update, rate, fmt,
start, stop, position);
/* fallthrough */
}
default:
res = gst_pad_event_default (pad, event);
break;
}
done:
gst_object_unref (basertppayload);
return res;
}
static GstFlowReturn
gst_basertppayload_chain (GstPad * pad, GstBuffer * buffer)
{
GstBaseRTPPayload *basertppayload;
GstBaseRTPPayloadClass *basertppayload_class;
GstFlowReturn ret;
basertppayload = GST_BASE_RTP_PAYLOAD (gst_pad_get_parent (pad));
basertppayload_class = GST_BASE_RTP_PAYLOAD_GET_CLASS (basertppayload);
if (!basertppayload_class->handle_buffer)
goto no_function;
ret = basertppayload_class->handle_buffer (basertppayload, buffer);
gst_object_unref (basertppayload);
return ret;
/* ERRORS */
no_function:
{
GST_ELEMENT_ERROR (basertppayload, STREAM, NOT_IMPLEMENTED, (NULL),
("subclass did not implement handle_buffer function"));
gst_object_unref (basertppayload);
gst_buffer_unref (buffer);
return GST_FLOW_ERROR;
}
}
/**
* gst_basertppayload_set_options:
* @payload: a #GstBaseRTPPayload
* @media: the media type (typically "audio" or "video")
* @dynamic: if the payload type is dynamic
* @encoding_name: the encoding name
* @clock_rate: the clock rate of the media
*
* Set the rtp options of the payloader. These options will be set in the caps
* of the payloader. Subclasses must call this method before calling
* gst_basertppayload_push() or gst_basertppayload_set_outcaps().
*/
void
gst_basertppayload_set_options (GstBaseRTPPayload * payload,
gchar * media, gboolean dynamic, gchar * encoding_name, guint32 clock_rate)
{
g_return_if_fail (payload != NULL);
g_return_if_fail (clock_rate != 0);
g_free (payload->media);
payload->media = g_strdup (media);
payload->dynamic = dynamic;
g_free (payload->encoding_name);
payload->encoding_name = g_strdup (encoding_name);
payload->clock_rate = clock_rate;
}
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;
/* 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);
}
gst_pad_set_caps (GST_BASE_RTP_PAYLOAD_SRCPAD (payload), srccaps);
gst_caps_unref (srccaps);
return TRUE;
}
/**
* 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);
/* take first timestamp as base, we want to calculate the RTP timestamp
* starting from the ts_base */
if (priv->rt_base == -1) {
priv->rt_base = rtime;
GST_LOG_OBJECT (payload, "first timestamp %" GST_TIME_FORMAT,
GST_TIME_ARGS (rtime));
}
rtime -= priv->rt_base;
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;
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;
priv->rt_base = -1;
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;
}