diff options
| -rw-r--r-- | gst/rtpmux/.git-darcs-dir | 0 | ||||
| -rw-r--r-- | gst/rtpmux/Makefile.am | 7 | ||||
| -rw-r--r-- | gst/rtpmux/gstrtpmux.c | 441 |
3 files changed, 448 insertions, 0 deletions
diff --git a/gst/rtpmux/.git-darcs-dir b/gst/rtpmux/.git-darcs-dir new file mode 100644 index 00000000..e69de29b --- /dev/null +++ b/gst/rtpmux/.git-darcs-dir diff --git a/gst/rtpmux/Makefile.am b/gst/rtpmux/Makefile.am new file mode 100644 index 00000000..73973f54 --- /dev/null +++ b/gst/rtpmux/Makefile.am @@ -0,0 +1,7 @@ +plugin_LTLIBRARIES = libgstrtpmux.la + +libgstrtpmux_la_SOURCES = gstrtpmux.c + +libgstrtpmux_la_CFLAGS = $(GST_CFLAGS) $(GST_PLUGINS_BASE_CFLAGS) $(ERROR_CFLAGS) -DEXTERN_BUF -DRTP_SUPPORT +libgstrtpmux_la_LIBADD = $(GST_LIBS_LIBS) +libgstrtpmux_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) $(GST_BASE_LIBS) $(GST_PLUGINS_BASE_LIBS) -lgstrtp-@GST_MAJORMINOR@ diff --git a/gst/rtpmux/gstrtpmux.c b/gst/rtpmux/gstrtpmux.c new file mode 100644 index 00000000..2e3f0043 --- /dev/null +++ b/gst/rtpmux/gstrtpmux.c @@ -0,0 +1,441 @@ +/* rtp muxer plugin for GStreamer + * Copyright (C) 2004 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 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., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +/** + * SECTION:element-rtpmux + * @short_description: Muxer that takes one or several RTP streams + * and muxes them to a single rtp stream. + * + * <refsect2> + * </refsect2> + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <gst/gst.h> +#include <gst/rtp/gstrtpbuffer.h> + +#include <string.h> + +GST_DEBUG_CATEGORY_STATIC (gst_rtp_mux_debug); +#define GST_CAT_DEFAULT gst_rtp_mux_debug + +#define GST_TYPE_RTP_MUX (gst_rtp_mux_get_type()) +#define GST_RTP_MUX(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_MUX, GstRTPMux)) +#define GST_RTP_MUX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_MUX, GstRTPMux)) +#define GST_IS_RTP_MUX(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_MUX)) +#define GST_IS_RTP_MUX_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_MUX)) + +typedef struct _GstRTPMux GstRTPMux; +typedef struct _GstRTPMuxClass GstRTPMuxClass; + +/** + * GstRTPMux: + * + * The opaque #GstRTPMux structure. + */ +struct _GstRTPMux +{ + GstElement element; + + /* pad */ + GstPad *srcpad; + + /* sinkpads */ + GSList *sinkpads; + gint numpads; + + guint16 seqnum_base; + gint16 seqnum_offset; + guint16 seqnum; +}; + +struct _GstRTPMuxClass +{ + GstElementClass parent_class; +}; + +/* elementfactory information */ +static const GstElementDetails gst_rtp_mux_details = +GST_ELEMENT_DETAILS ("RTP muxer", + "Codec/Muxer", + "mux rtp streams", + "Zeeshan Ali <first.last@nokia.com>"); + +enum +{ + ARG_0, + PROP_SEQNUM_OFFSET, + PROP_SEQNUM + /* FILL ME */ +}; + +#define DEFAULT_SEQNUM_OFFSET -1 + +static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("application/x-rtp") + ); + +static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink_%d", + GST_PAD_SINK, + GST_PAD_REQUEST, + GST_STATIC_CAPS ("application/x-rtp") + ); + +static void gst_rtp_mux_base_init (gpointer g_class); +static void gst_rtp_mux_class_init (GstRTPMuxClass * klass); +static void gst_rtp_mux_init (GstRTPMux * rtp_mux); + +static void gst_rtp_mux_finalize (GObject * object); + +static gboolean gst_rtp_mux_handle_src_event (GstPad * pad, + GstEvent * event); +static GstPad *gst_rtp_mux_request_new_pad (GstElement * element, + GstPadTemplate * templ, const gchar * name); +static GstFlowReturn gst_rtp_mux_chain (GstPad * pad, + GstBuffer * buffer); +static gboolean gst_rtp_mux_setcaps (GstPad *pad, GstCaps *caps); + +static GstStateChangeReturn gst_rtp_mux_change_state (GstElement * + element, GstStateChange transition); + +static void gst_rtp_mux_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec); +static void gst_rtp_mux_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec); + +static GstElementClass *parent_class = NULL; + +GType +gst_rtp_mux_get_type (void) +{ + static GType rtp_mux_type = 0; + + if (!rtp_mux_type) { + static const GTypeInfo rtp_mux_info = { + sizeof (GstRTPMuxClass), + gst_rtp_mux_base_init, + NULL, + (GClassInitFunc) gst_rtp_mux_class_init, + NULL, + NULL, + sizeof (GstRTPMux), + 0, + (GInstanceInitFunc) gst_rtp_mux_init, + }; + + rtp_mux_type = + g_type_register_static (GST_TYPE_ELEMENT, "GstRTPMux", + &rtp_mux_info, 0); + } + return rtp_mux_type; +} + +static void +gst_rtp_mux_base_init (gpointer g_class) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); + + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&src_factory)); + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&sink_factory)); + + gst_element_class_set_details (element_class, &gst_rtp_mux_details); +} + +static void +gst_rtp_mux_class_init (GstRTPMuxClass * klass) +{ + GObjectClass *gobject_class; + GstElementClass *gstelement_class; + + gobject_class = (GObjectClass *) klass; + gstelement_class = (GstElementClass *) klass; + + parent_class = g_type_class_peek_parent (klass); + + gobject_class->finalize = gst_rtp_mux_finalize; + gobject_class->get_property = gst_rtp_mux_get_property; + gobject_class->set_property = gst_rtp_mux_set_property; + + 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_MAXINT, + DEFAULT_SEQNUM_OFFSET, G_PARAM_READWRITE)); + 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_MAXUINT, 0, G_PARAM_READABLE)); + + gstelement_class->request_new_pad = gst_rtp_mux_request_new_pad; + gstelement_class->change_state = gst_rtp_mux_change_state; +} + +static void +gst_rtp_mux_init (GstRTPMux * rtp_mux) +{ + GstElementClass *klass = GST_ELEMENT_GET_CLASS (rtp_mux); + + rtp_mux->srcpad = + gst_pad_new_from_template (gst_element_class_get_pad_template (klass, + "src"), "src"); + gst_pad_set_event_function (rtp_mux->srcpad, + gst_rtp_mux_handle_src_event); + gst_element_add_pad (GST_ELEMENT (rtp_mux), rtp_mux->srcpad); + + rtp_mux->seqnum_offset = DEFAULT_SEQNUM_OFFSET; +} + +static void +gst_rtp_mux_finalize (GObject * object) +{ + GstRTPMux *rtp_mux; + + rtp_mux = GST_RTP_MUX (object); + + if (rtp_mux->sinkpads) { + g_slist_foreach (rtp_mux->sinkpads, (GFunc) gst_object_unref, NULL); + g_slist_free (rtp_mux->sinkpads); + rtp_mux->sinkpads = NULL; + } + + G_OBJECT_CLASS (parent_class)->finalize (object); +} + +static GstPad * +gst_rtp_mux_request_new_pad (GstElement * element, + GstPadTemplate * templ, const gchar * req_name) +{ + GstRTPMux *rtp_mux; + GstPad *newpad; + GstElementClass *klass = GST_ELEMENT_GET_CLASS (element); + + g_return_val_if_fail (templ != NULL, NULL); + + if (templ->direction != GST_PAD_SINK) { + g_warning ("rtp_mux: request pad that is not a SINK pad\n"); + return NULL; + } + + g_return_val_if_fail (GST_IS_RTP_MUX (element), NULL); + + rtp_mux = GST_RTP_MUX (element); + + if (templ == gst_element_class_get_pad_template (klass, "sink_%d")) { + gchar *name; + + /* create new pad with the name */ + name = g_strdup_printf ("sink_%02d", rtp_mux->numpads); + newpad = gst_pad_new_from_template (templ, name); + g_free (name); + + rtp_mux->sinkpads = g_slist_append (rtp_mux->sinkpads, (gpointer) newpad); + rtp_mux->numpads++; + } else { + g_warning ("rtp_mux: this is not our template!\n"); + return NULL; + } + + /* setup some pad functions */ + gst_pad_set_chain_function (newpad, gst_rtp_mux_chain); + gst_pad_set_setcaps_function (newpad, gst_rtp_mux_setcaps); + + /* dd the pad to the element */ + gst_element_add_pad (element, newpad); + + return newpad; +} + +static GstFlowReturn +gst_rtp_mux_chain (GstPad * pad, GstBuffer * buffer) +{ + GstRTPMux *rtp_mux; + + rtp_mux = GST_RTP_MUX (gst_pad_get_parent (pad)); + + rtp_mux->seqnum++; + GST_LOG_OBJECT (rtp_mux, "setting RTP seqnum %d", rtp_mux->seqnum); + gst_rtp_buffer_set_seq (buffer, rtp_mux->seqnum); + + gst_object_unref (rtp_mux); + + GST_DEBUG_OBJECT (rtp_mux, "Pushing packet size %d, seq=%d, ts=%u", + GST_BUFFER_SIZE (buffer), rtp_mux->seqnum - 1); + + return gst_pad_push (rtp_mux->srcpad, buffer); +} + +static gboolean +gst_rtp_mux_setcaps (GstPad *pad, GstCaps *caps) +{ + /*GstRTPMux *rtp_mux; + GstCaps *old_caps; + GstCaps *new_caps; + gint i; + gboolean ret; + + rtp_mux = GST_RTP_MUX (gst_pad_get_parent (pad)); + + new_caps = gst_caps_copy (caps); + + / * We want our own seq base on the caps * / + for (i=0; i< gst_caps_get_size (new_caps); i++) { + GstStructure *structure = gst_caps_get_structure (new_caps, i); + gst_structure_set (structure, + "seqnum-base", G_TYPE_UINT, rtp_mux->seqnum_base, NULL); + } + + old_caps = GST_PAD_CAPS (rtp_mux->srcpad); + if (old_caps != NULL) { + new_caps = gst_caps_union (old_caps, new_caps); + } + + GST_DEBUG_OBJECT (rtp_mux, + "seting caps %" GST_PTR_FORMAT " on src pad..", caps); + ret = gst_pad_set_caps (rtp_mux->srcpad, new_caps); + gst_caps_unref (new_caps); + + return ret;*/ + + return TRUE; +} + +/* handle events */ +static gboolean +gst_rtp_mux_handle_src_event (GstPad * pad, GstEvent * event) +{ + GstRTPMux *rtp_mux; + GstEventType type; + + rtp_mux = GST_RTP_MUX (gst_pad_get_parent (pad)); + + type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN; + + switch (type) { + case GST_EVENT_SEEK: + /* disable seeking for now */ + return FALSE; + default: + break; + } + + gst_object_unref (rtp_mux); + + return gst_pad_event_default (pad, event); +} + +static void +gst_rtp_mux_get_property (GObject * object, + guint prop_id, GValue * value, GParamSpec * pspec) +{ + GstRTPMux *rtp_mux; + + rtp_mux = GST_RTP_MUX (object); + + switch (prop_id) { + case PROP_SEQNUM_OFFSET: + g_value_set_int (value, rtp_mux->seqnum_offset); + break; + case PROP_SEQNUM: + g_value_set_uint (value, rtp_mux->seqnum); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gst_rtp_mux_set_property (GObject * object, + guint prop_id, const GValue * value, GParamSpec * pspec) +{ + GstRTPMux *rtp_mux; + + rtp_mux = GST_RTP_MUX (object); + + switch (prop_id) { + case PROP_SEQNUM_OFFSET: + rtp_mux->seqnum_offset = g_value_get_int (value); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static GstStateChangeReturn +gst_rtp_mux_change_state (GstElement * element, GstStateChange transition) +{ + GstRTPMux *rtp_mux; + GstStateChangeReturn ret; + + rtp_mux = GST_RTP_MUX (element); + + switch (transition) { + case GST_STATE_CHANGE_NULL_TO_READY: + break; + case GST_STATE_CHANGE_READY_TO_PAUSED: + if (rtp_mux->seqnum_offset == -1) + rtp_mux->seqnum_base = g_random_int_range (0, G_MAXUINT16); + else + rtp_mux->seqnum_base = rtp_mux->seqnum_offset; + rtp_mux->seqnum = rtp_mux->seqnum_base; + break; + case GST_STATE_CHANGE_PAUSED_TO_READY: + break; + default: + break; + } + + ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); + if (ret == GST_STATE_CHANGE_FAILURE) + return ret; + + switch (transition) { + default: + break; + } + + return ret; +} + +gboolean +gst_rtp_mux_plugin_init (GstPlugin * plugin) +{ + GST_DEBUG_CATEGORY_INIT (gst_rtp_mux_debug, "rtpmux", 0, + "rtp muxer"); + + return gst_element_register (plugin, "rtpmux", GST_RANK_NONE, + GST_TYPE_RTP_MUX); +} + +GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, + GST_VERSION_MINOR, + "rtpmux", + "RTP muxer", + gst_rtp_mux_plugin_init, + VERSION, + "LGPL", + "Farsight", + "http://farsight.sf.net") |