mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-09 13:48:55 +00:00
The peer is already gone when pad_removed_cb() called, so the ghost cannot be removed. Use g_object_set_data() instead to remember the ghost pad. Copied from similar code in GstRTPBin.
327 lines
9.1 KiB
C
327 lines
9.1 KiB
C
/*
|
|
* Copyright (C) 2016 Sebastian Dröge <sebastian@centricular.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 details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "gstsdpsrc.h"
|
|
#include <gst/app/app.h>
|
|
#include <string.h>
|
|
|
|
GST_DEBUG_CATEGORY_STATIC (sdp_src_debug);
|
|
#define GST_CAT_DEFAULT sdp_src_debug
|
|
|
|
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("stream_%u",
|
|
GST_PAD_SRC,
|
|
GST_PAD_SOMETIMES,
|
|
GST_STATIC_CAPS ("application/x-rtp"));
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_LOCATION,
|
|
PROP_SDP
|
|
};
|
|
|
|
static void gst_sdp_src_handler_init (gpointer g_iface, gpointer iface_data);
|
|
|
|
#define gst_sdp_src_parent_class parent_class
|
|
G_DEFINE_TYPE_WITH_CODE (GstSdpSrc, gst_sdp_src, GST_TYPE_BIN,
|
|
G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER, gst_sdp_src_handler_init));
|
|
|
|
static void
|
|
gst_sdp_src_finalize (GObject * object)
|
|
{
|
|
GstSdpSrc *self = GST_SDP_SRC_CAST (object);
|
|
|
|
if (self->sdp_buffer)
|
|
gst_buffer_unref (self->sdp_buffer);
|
|
g_free (self->location);
|
|
g_free (self->sdp);
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
gst_sdp_src_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstSdpSrc *self = GST_SDP_SRC_CAST (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_LOCATION:
|
|
g_value_set_string (value, self->location);
|
|
break;
|
|
case PROP_SDP:
|
|
g_value_set_string (value, self->sdp);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_sdp_src_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstSdpSrc *self = GST_SDP_SRC_CAST (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_LOCATION:
|
|
g_free (self->location);
|
|
self->location = g_value_dup_string (value);
|
|
break;
|
|
case PROP_SDP:
|
|
g_free (self->sdp);
|
|
self->sdp = g_value_dup_string (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
pad_added_cb (GstElement * element, GstPad * pad, gpointer user_data)
|
|
{
|
|
GstSdpSrc *self = GST_SDP_SRC_CAST (user_data);
|
|
GstPad *ghost;
|
|
|
|
ghost =
|
|
gst_ghost_pad_new_from_template (GST_PAD_NAME (pad), pad,
|
|
gst_static_pad_template_get (&src_template));
|
|
gst_pad_set_active (ghost, TRUE);
|
|
gst_element_add_pad (GST_ELEMENT_CAST (self), ghost);
|
|
g_object_set_data (G_OBJECT (pad), "GstSdpSrc.ghostpad", ghost);
|
|
}
|
|
|
|
static void
|
|
pad_removed_cb (GstElement * element, GstPad * pad, gpointer user_data)
|
|
{
|
|
GstSdpSrc *self = GST_SDP_SRC_CAST (user_data);
|
|
GstPad *ghost;
|
|
|
|
ghost = g_object_get_data (G_OBJECT (pad), "GstSdpSrc.ghostpad");
|
|
if (ghost) {
|
|
g_object_set_data (G_OBJECT (pad), "GstSdpSrc.ghostpad", NULL);
|
|
|
|
gst_pad_set_active (ghost, FALSE);
|
|
gst_element_remove_pad (GST_ELEMENT_CAST (self), ghost);
|
|
}
|
|
}
|
|
|
|
static void
|
|
no_more_pads_cb (GstElement * element, gpointer user_data)
|
|
{
|
|
gst_element_no_more_pads (GST_ELEMENT_CAST (user_data));
|
|
}
|
|
|
|
static void
|
|
remove_pad (const GValue * item, gpointer user_data)
|
|
{
|
|
GstElement *self = user_data;
|
|
GstPad *pad = g_value_get_object (item);
|
|
|
|
gst_element_remove_pad (self, pad);
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_sdp_src_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstSdpSrc *self = GST_SDP_SRC_CAST (element);
|
|
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
GST_OBJECT_LOCK (self);
|
|
if (self->sdp_buffer)
|
|
gst_buffer_unref (self->sdp_buffer);
|
|
self->sdp_buffer = NULL;
|
|
|
|
if (self->location && strcmp (self->location, "sdp://") != 0) {
|
|
/* Do nothing */
|
|
} else if (self->sdp) {
|
|
self->sdp_buffer =
|
|
gst_buffer_new_wrapped (self->sdp, strlen (self->sdp) + 1);
|
|
} else {
|
|
ret = GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
GST_OBJECT_UNLOCK (self);
|
|
|
|
if (ret != GST_STATE_CHANGE_FAILURE) {
|
|
if (self->sdp_buffer) {
|
|
GstCaps *caps = gst_caps_new_empty_simple ("application/sdp");
|
|
|
|
self->src = gst_element_factory_make ("appsrc", NULL);
|
|
g_object_set (self->src, "caps", caps, "emit-signals", FALSE, NULL);
|
|
gst_caps_unref (caps);
|
|
} else {
|
|
self->src = gst_element_factory_make ("filesrc", NULL);
|
|
g_object_set (self->src, "location", self->location + 6, NULL);
|
|
}
|
|
|
|
self->demux = gst_element_factory_make ("sdpdemux", NULL);
|
|
g_signal_connect (self->demux, "pad-added", G_CALLBACK (pad_added_cb),
|
|
self);
|
|
g_signal_connect (self->demux, "pad-removed",
|
|
G_CALLBACK (pad_removed_cb), self);
|
|
g_signal_connect (self->demux, "no-more-pads",
|
|
G_CALLBACK (no_more_pads_cb), self);
|
|
gst_bin_add_many (GST_BIN_CAST (self), self->src, self->demux, NULL);
|
|
gst_element_link_pads (self->src, "src", self->demux, "sink");
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
return ret;
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
return ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_NULL:{
|
|
GstIterator *it;
|
|
|
|
it = gst_element_iterate_src_pads (GST_ELEMENT_CAST (self));
|
|
while (gst_iterator_foreach (it, remove_pad, self) == GST_ITERATOR_RESYNC)
|
|
gst_iterator_resync (it);
|
|
gst_iterator_free (it);
|
|
|
|
if (self->src) {
|
|
gst_bin_remove (GST_BIN_CAST (self), self->src);
|
|
self->src = NULL;
|
|
}
|
|
if (self->demux) {
|
|
gst_bin_remove (GST_BIN_CAST (self), self->demux);
|
|
self->demux = NULL;
|
|
}
|
|
break;
|
|
}
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
if (ret != GST_STATE_CHANGE_FAILURE)
|
|
ret = GST_STATE_CHANGE_NO_PREROLL;
|
|
if (self->sdp_buffer) {
|
|
if (gst_app_src_push_buffer (GST_APP_SRC_CAST (self->src),
|
|
gst_buffer_ref (self->sdp_buffer)) != GST_FLOW_OK)
|
|
ret = GST_STATE_CHANGE_FAILURE;
|
|
else
|
|
gst_app_src_end_of_stream (GST_APP_SRC_CAST (self->src));
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
gst_sdp_src_class_init (GstSdpSrcClass * klass)
|
|
{
|
|
GObjectClass *gobject_class = (GObjectClass *) klass;
|
|
GstElementClass *element_class = (GstElementClass *) klass;
|
|
|
|
GST_DEBUG_CATEGORY_INIT (sdp_src_debug, "sdpsrc", 0, "SDP Source");
|
|
|
|
gobject_class->finalize = gst_sdp_src_finalize;
|
|
gobject_class->set_property = gst_sdp_src_set_property;
|
|
gobject_class->get_property = gst_sdp_src_get_property;
|
|
|
|
g_object_class_install_property (gobject_class, PROP_LOCATION,
|
|
g_param_spec_string ("location",
|
|
"Location",
|
|
"URI to SDP file (sdp:///path/to/file)", NULL,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_SDP,
|
|
g_param_spec_string ("sdp",
|
|
"SDP",
|
|
"SDP description used instead of location", NULL,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
gst_element_class_add_pad_template (element_class,
|
|
gst_static_pad_template_get (&src_template));
|
|
|
|
gst_element_class_set_static_metadata (element_class, "SDP Source",
|
|
"Source/Network/RTP",
|
|
"Stream RTP based on an SDP",
|
|
"Sebastian Dröge <sebastian@centricular.com>");
|
|
|
|
element_class->change_state = GST_DEBUG_FUNCPTR (gst_sdp_src_change_state);
|
|
}
|
|
|
|
static void
|
|
gst_sdp_src_init (GstSdpSrc * self)
|
|
{
|
|
}
|
|
|
|
static GstURIType
|
|
gst_sdp_src_get_uri_type (GType type)
|
|
{
|
|
return GST_URI_SRC;
|
|
}
|
|
|
|
static const gchar *const *
|
|
gst_sdp_src_get_protocols (GType type)
|
|
{
|
|
static const gchar *protocols[] = { "sdp", 0 };
|
|
|
|
return protocols;
|
|
}
|
|
|
|
static gchar *
|
|
gst_sdp_src_get_uri (GstURIHandler * handler)
|
|
{
|
|
gchar *uri = NULL;
|
|
|
|
g_object_get (handler, "location", &uri, NULL);
|
|
|
|
return uri;
|
|
}
|
|
|
|
static gboolean
|
|
gst_sdp_src_set_uri (GstURIHandler * handler, const gchar * uri,
|
|
GError ** error)
|
|
{
|
|
if (uri && !g_str_has_prefix (uri, "sdp://")) {
|
|
g_set_error (error, GST_URI_ERROR, GST_URI_ERROR_BAD_URI,
|
|
"Invalid SDP URI");
|
|
return FALSE;
|
|
}
|
|
|
|
g_object_set (handler, "location", uri, NULL);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_sdp_src_handler_init (gpointer g_iface, gpointer iface_data)
|
|
{
|
|
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
|
|
|
|
iface->get_type = gst_sdp_src_get_uri_type;
|
|
iface->get_protocols = gst_sdp_src_get_protocols;
|
|
iface->get_uri = gst_sdp_src_get_uri;
|
|
iface->set_uri = gst_sdp_src_set_uri;
|
|
}
|