/* GStreamer * Copyright (C) <2006> Philippe Khalaf <burger@speedy.org> * * 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. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include <string.h> #include <stdlib.h> #include <gst/rtp/gstrtpbuffer.h> #include "gstrtpilbcdepay.h" /* elementfactory information */ static const GstElementDetails gst_rtp_ilbc_depay_details = GST_ELEMENT_DETAILS ("RTP iLBC depayloader", "Codec/Depayloader/Network", "Extracts iLBC audio from RTP packets (RFC 3952)", "Philippe Kalaf <philippe.kalaf@collabora.co.uk>"); /* RtpiLBCDepay signals and args */ enum { /* FILL ME */ LAST_SIGNAL }; #define DEFAULT_MODE GST_ILBC_MODE_30 enum { PROP_0, PROP_MODE }; /* FIXME, mode should be string because it is a parameter in SDP fmtp */ static GstStaticPadTemplate gst_rtp_ilbc_depay_sink_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS ("application/x-rtp, " "media = (string) \"audio\", " "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", " "clock-rate = (int) 8000, " "encoding-name = (string) \"ILBC\", " "mode = (string) { \"20\", \"30\" }") ); static GstStaticPadTemplate gst_rtp_ilbc_depay_src_template = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS ("audio/x-iLBC, " "mode = (int) { 20, 30 }") ); static void gst_ilbc_depay_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_ilbc_depay_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstBuffer *gst_rtp_ilbc_depay_process (GstBaseRTPDepayload * depayload, GstBuffer * buf); static gboolean gst_rtp_ilbc_depay_setcaps (GstBaseRTPDepayload * depayload, GstCaps * caps); GST_BOILERPLATE (GstRTPiLBCDepay, gst_rtp_ilbc_depay, GstBaseRTPDepayload, GST_TYPE_BASE_RTP_DEPAYLOAD); #define GST_TYPE_ILBC_MODE (gst_ilbc_mode_get_type()) static GType gst_ilbc_mode_get_type (void) { static GType ilbc_mode_type = 0; static const GEnumValue ilbc_modes[] = { {GST_ILBC_MODE_20, "20ms frames", "20ms"}, {GST_ILBC_MODE_30, "30ms frames", "30ms"}, {0, NULL, NULL}, }; if (!ilbc_mode_type) { ilbc_mode_type = g_enum_register_static ("iLBCMode", ilbc_modes); } return ilbc_mode_type; } static void gst_rtp_ilbc_depay_base_init (gpointer klass) { GstElementClass *element_class = GST_ELEMENT_CLASS (klass); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_rtp_ilbc_depay_src_template)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_rtp_ilbc_depay_sink_template)); gst_element_class_set_details (element_class, &gst_rtp_ilbc_depay_details); } static void gst_rtp_ilbc_depay_class_init (GstRTPiLBCDepayClass * klass) { GObjectClass *gobject_class; GstBaseRTPDepayloadClass *gstbasertpdepayload_class; gobject_class = (GObjectClass *) klass; gstbasertpdepayload_class = (GstBaseRTPDepayloadClass *) klass; gobject_class->set_property = gst_ilbc_depay_set_property; gobject_class->get_property = gst_ilbc_depay_get_property; /* FIXME, mode is in the caps */ g_object_class_install_property (gobject_class, PROP_MODE, g_param_spec_enum ("mode", "Mode", "iLBC frame mode", GST_TYPE_ILBC_MODE, DEFAULT_MODE, G_PARAM_READWRITE)); gstbasertpdepayload_class->process = gst_rtp_ilbc_depay_process; gstbasertpdepayload_class->set_caps = gst_rtp_ilbc_depay_setcaps; } static void gst_rtp_ilbc_depay_init (GstRTPiLBCDepay * rtpilbcdepay, GstRTPiLBCDepayClass * klass) { /* Set default mode */ rtpilbcdepay->mode = DEFAULT_MODE; } static gboolean gst_rtp_ilbc_depay_setcaps (GstBaseRTPDepayload * depayload, GstCaps * caps) { GstRTPiLBCDepay *rtpilbcdepay = GST_RTP_ILBC_DEPAY (depayload); GstCaps *srccaps; GstStructure *structure; const gchar *mode_str = NULL; gint mode, clock_rate; gboolean ret; structure = gst_caps_get_structure (caps, 0); mode = rtpilbcdepay->mode; if (!gst_structure_get_int (structure, "clock-rate", &clock_rate)) clock_rate = 8000; depayload->clock_rate = clock_rate; /* parse mode, if we can */ mode_str = gst_structure_get_string (structure, "mode"); if (mode_str) { mode = strtol (mode_str, NULL, 10); if (mode != 20 && mode != 30) mode = rtpilbcdepay->mode; } rtpilbcdepay->mode = mode; srccaps = gst_caps_new_simple ("audio/x-iLBC", "mode", G_TYPE_INT, rtpilbcdepay->mode, NULL); ret = gst_pad_set_caps (GST_BASE_RTP_DEPAYLOAD_SRCPAD (depayload), srccaps); GST_DEBUG ("set caps on source: %" GST_PTR_FORMAT " (ret=%d)", srccaps, ret); gst_caps_unref (srccaps); return ret; } static GstBuffer * gst_rtp_ilbc_depay_process (GstBaseRTPDepayload * depayload, GstBuffer * buf) { GstBuffer *outbuf; gboolean marker; marker = gst_rtp_buffer_get_marker (buf); GST_DEBUG ("process : got %d bytes, mark %d ts %u seqn %d", GST_BUFFER_SIZE (buf), marker, gst_rtp_buffer_get_timestamp (buf), gst_rtp_buffer_get_seq (buf)); outbuf = gst_rtp_buffer_get_payload_buffer (buf); if (marker) { /* mark start of talkspurt with DISCONT */ GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT); } return outbuf; } static void gst_ilbc_depay_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstRTPiLBCDepay *rtpilbcdepay = GST_RTP_ILBC_DEPAY (object); switch (prop_id) { case PROP_MODE: rtpilbcdepay->mode = g_value_get_enum (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_ilbc_depay_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstRTPiLBCDepay *rtpilbcdepay = GST_RTP_ILBC_DEPAY (object); switch (prop_id) { case PROP_MODE: g_value_set_enum (value, rtpilbcdepay->mode); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } gboolean gst_rtp_ilbc_depay_plugin_init (GstPlugin * plugin) { return gst_element_register (plugin, "rtpilbcdepay", GST_RANK_MARGINAL, GST_TYPE_RTP_ILBC_DEPAY); }