mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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41dd6399a6
Added various other test server examples Move the SDP message generation to a separate helper. Refactor common code for finding the session. Add content-base for realplayer compatibility Clean up request uris before processing for better vlc compatibility. Move prerolling and pipeline construction to the RTSPMedia object. Use multiudpsink for future pipeline reuse.
315 lines
8.5 KiB
C
315 lines
8.5 KiB
C
/* GStreamer
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* Copyright (C) 2008 Wim Taymans <wim.taymans at gmail.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 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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "rtsp-media-factory.h"
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#define DEFAULT_LAUNCH NULL
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enum
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{
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PROP_0,
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PROP_LAUNCH,
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PROP_LAST
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};
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static void gst_rtsp_media_factory_get_property (GObject *object, guint propid,
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GValue *value, GParamSpec *pspec);
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static void gst_rtsp_media_factory_set_property (GObject *object, guint propid,
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const GValue *value, GParamSpec *pspec);
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static void gst_rtsp_media_factory_finalize (GObject * obj);
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static GstRTSPMedia * default_construct (GstRTSPMediaFactory *factory, const GstRTSPUrl *url);
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static GstElement * default_get_element (GstRTSPMediaFactory *factory, const GstRTSPUrl *url);
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G_DEFINE_TYPE (GstRTSPMediaFactory, gst_rtsp_media_factory, G_TYPE_OBJECT);
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static void
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gst_rtsp_media_factory_class_init (GstRTSPMediaFactoryClass * klass)
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{
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GObjectClass *gobject_class;
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gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->get_property = gst_rtsp_media_factory_get_property;
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gobject_class->set_property = gst_rtsp_media_factory_set_property;
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gobject_class->finalize = gst_rtsp_media_factory_finalize;
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/**
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* GstRTSPMediaFactory::launch
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*
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* The gst_parse_launch() line to use for constructing the pipeline in the
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* default prepare vmethod.
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*
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* The pipeline description should return a GstBin as the toplevel element
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* which can be accomplished by enclosing the dscription with brackets '('
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* ')'.
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*
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* The description should return a pipeline with payloaders named pay0, pay1,
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* etc.. Each of the payloaders will result in a stream.
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*/
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g_object_class_install_property (gobject_class, PROP_LAUNCH,
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g_param_spec_string ("launch", "Launch", "A launch description of the pipeline",
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DEFAULT_LAUNCH, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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klass->construct = default_construct;
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klass->get_element = default_get_element;
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}
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static void
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gst_rtsp_media_factory_init (GstRTSPMediaFactory * factory)
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{
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}
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static void
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gst_rtsp_media_factory_finalize (GObject * obj)
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{
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GstRTSPMediaFactory *factory = GST_RTSP_MEDIA_FACTORY (obj);
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g_free (factory->launch);
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G_OBJECT_CLASS (gst_rtsp_media_factory_parent_class)->finalize (obj);
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}
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static void
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gst_rtsp_media_factory_get_property (GObject *object, guint propid,
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GValue *value, GParamSpec *pspec)
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{
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GstRTSPMediaFactory *factory = GST_RTSP_MEDIA_FACTORY (object);
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switch (propid) {
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case PROP_LAUNCH:
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g_value_take_string (value, gst_rtsp_media_factory_get_launch (factory));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, propid, pspec);
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}
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}
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static void
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gst_rtsp_media_factory_set_property (GObject *object, guint propid,
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const GValue *value, GParamSpec *pspec)
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{
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GstRTSPMediaFactory *factory = GST_RTSP_MEDIA_FACTORY (object);
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switch (propid) {
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case PROP_LAUNCH:
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gst_rtsp_media_factory_set_launch (factory, g_value_get_string (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, propid, pspec);
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}
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}
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/**
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* gst_rtsp_media_factory_new:
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*
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* Create a new #GstRTSPMediaFactory instance.
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*
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* Returns: a new #GstRTSPMediaFactory object.
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*/
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GstRTSPMediaFactory *
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gst_rtsp_media_factory_new (void)
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{
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GstRTSPMediaFactory *result;
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result = g_object_new (GST_TYPE_RTSP_MEDIA_FACTORY, NULL);
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return result;
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}
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/**
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* gst_rtsp_media_factory_set_launch:
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* @factory: a #GstRTSPMediaFactory
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* @launch: the launch description
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*
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*
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* The gst_parse_launch() line to use for constructing the pipeline in the
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* default prepare vmethod.
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*
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* The pipeline description should return a GstBin as the toplevel element
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* which can be accomplished by enclosing the dscription with brackets '('
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* ')'.
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*
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* The description should return a pipeline with payloaders named pay0, pay1,
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* etc.. Each of the payloaders will result in a stream.
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*/
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void
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gst_rtsp_media_factory_set_launch (GstRTSPMediaFactory *factory, const gchar *launch)
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{
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g_return_if_fail (GST_IS_RTSP_MEDIA_FACTORY (factory));
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g_return_if_fail (launch != NULL);
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factory->launch = g_strdup (launch);
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}
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/**
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* gst_rtsp_media_factory_get_launch:
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* @factory: a #GstRTSPMediaFactory
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*
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* Get the gst_parse_launch() pipeline description that will be used in the
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* default prepare vmethod.
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*
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* Returns: the configured launch description. g_free() after usage.
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*/
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gchar *
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gst_rtsp_media_factory_get_launch (GstRTSPMediaFactory *factory)
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{
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gchar *result;
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result = g_strdup (factory->launch);
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return result;
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}
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/**
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* gst_rtsp_media_factory_construct:
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* @factory: a #GstRTSPMediaFactory
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* @url: the url used
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*
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* Prepare the media object and create its streams. Implementations
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* should create the needed gstreamer elements and add them to the result
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* object. No state changes should be performed on them yet.
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*
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* One or more GstRTSPMediaStream objects should be added to the result with
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* the srcpad member set to a source pad that produces buffer of type
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* application/x-rtp.
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*
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* Returns: a new #GstRTSPMedia if the media could be prepared.
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*/
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GstRTSPMedia *
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gst_rtsp_media_factory_construct (GstRTSPMediaFactory *factory, const GstRTSPUrl *url)
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{
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GstRTSPMedia *res;
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GstRTSPMediaFactoryClass *klass;
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klass = GST_RTSP_MEDIA_FACTORY_GET_CLASS (factory);
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if (klass->construct)
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res = klass->construct (factory, url);
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else
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res = NULL;
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g_message ("constructed media %p for url %s", res, url->abspath);
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return res;
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}
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static GstElement *
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default_get_element (GstRTSPMediaFactory *factory, const GstRTSPUrl *url)
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{
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GstElement *element;
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GError *error = NULL;
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/* we need a parse syntax */
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if (factory->launch == NULL)
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goto no_launch;
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/* parse the user provided launch line */
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element = gst_parse_launch (factory->launch, &error);
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if (element == NULL)
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goto parse_error;
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if (error != NULL) {
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/* a recoverable error was encountered */
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g_warning ("recoverable parsing error: %s", error->message);
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g_error_free (error);
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}
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return element;
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/* ERRORS */
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no_launch:
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{
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g_critical ("no launch line specified");
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return NULL;
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}
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parse_error:
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{
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g_critical ("could not parse launch syntax (%s): %s", factory->launch,
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(error ? error->message : "unknown reason"));
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if (error)
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g_error_free (error);
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return NULL;
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}
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}
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static GstRTSPMedia *
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default_construct (GstRTSPMediaFactory *factory, const GstRTSPUrl *url)
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{
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GstRTSPMedia *media;
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GstRTSPMediaStream *stream;
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GstElement *pay, *element;
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GstPad * pad;
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gint i;
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GstRTSPMediaFactoryClass *klass;
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klass = GST_RTSP_MEDIA_FACTORY_GET_CLASS (factory);
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if (klass->get_element)
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element = klass->get_element (factory, url);
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else
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element = NULL;
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if (element == NULL)
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goto no_element;
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/* create a new empty media */
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media = gst_rtsp_media_new ();
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media->element = element;
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/* try to find all the payloader elements, they should be named 'pay%d'. for
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* each of the payloaders we will create a stream and collect the source pad.
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*/
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for (i = 0; ; i++) {
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gchar *name;
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name = g_strdup_printf ("pay%d", i);
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if (!(pay = gst_bin_get_by_name (GST_BIN (element), name))) {
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/* no more payloaders found, we have found all the streams and we can
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* end the loop */
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g_free (name);
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break;
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}
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/* create the stream */
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stream = g_new0 (GstRTSPMediaStream, 1);
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stream->media = media;
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stream->payloader = pay;
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stream->idx = media->streams->len;
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pad = gst_element_get_static_pad (pay, "src");
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/* ghost the pad of the payloader to the element */
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stream->srcpad = gst_ghost_pad_new (name, pad);
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gst_element_add_pad (media->element, stream->srcpad);
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gst_object_unref (pay);
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g_free (name);
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/* add stream now */
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g_array_append_val (media->streams, stream);
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}
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return media;
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/* ERRORS */
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no_element:
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{
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g_critical ("could not create element");
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return NULL;
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}
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}
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