gstreamer/gst/rtp/gstrtpilbcdepay.c
Tim-Philipp Müller 4a28e649c3 rtp: cache meta tag quarks and add more utility functions for metas
Every g_quark_from_static_string() is a hash table lookup serialised
on the global quark lock in GLib. Let's just look up the two quarks
we need once and cache them locally for future use. While we're at it,
add new utility functions for the two most commonly used tags
(audio + video). Make first argument a gpointer so we don't have to
cast and make the code ugly. These are used for logging purposes
only anyway.
2017-05-24 13:32:10 +01:00

237 lines
6.8 KiB
C

/* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include <stdlib.h>
#include <gst/rtp/gstrtpbuffer.h>
#include <gst/audio/audio.h>
#include "gstrtpilbcdepay.h"
#include "gstrtputils.h"
/* 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\", "
"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 (GstRTPBaseDepayload * depayload,
GstRTPBuffer * rtp);
static gboolean gst_rtp_ilbc_depay_setcaps (GstRTPBaseDepayload * depayload,
GstCaps * caps);
#define gst_rtp_ilbc_depay_parent_class parent_class
G_DEFINE_TYPE (GstRTPiLBCDepay, gst_rtp_ilbc_depay,
GST_TYPE_RTP_BASE_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_class_init (GstRTPiLBCDepayClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstRTPBaseDepayloadClass *gstrtpbasedepayload_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gstrtpbasedepayload_class = (GstRTPBaseDepayloadClass *) 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 | G_PARAM_STATIC_STRINGS));
gst_element_class_add_static_pad_template (gstelement_class,
&gst_rtp_ilbc_depay_src_template);
gst_element_class_add_static_pad_template (gstelement_class,
&gst_rtp_ilbc_depay_sink_template);
gst_element_class_set_static_metadata (gstelement_class,
"RTP iLBC depayloader", "Codec/Depayloader/Network/RTP",
"Extracts iLBC audio from RTP packets (RFC 3952)",
"Philippe Kalaf <philippe.kalaf@collabora.co.uk>");
gstrtpbasedepayload_class->process_rtp_packet = gst_rtp_ilbc_depay_process;
gstrtpbasedepayload_class->set_caps = gst_rtp_ilbc_depay_setcaps;
}
static void
gst_rtp_ilbc_depay_init (GstRTPiLBCDepay * rtpilbcdepay)
{
/* Set default mode */
rtpilbcdepay->mode = DEFAULT_MODE;
}
static gboolean
gst_rtp_ilbc_depay_setcaps (GstRTPBaseDepayload * 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_RTP_BASE_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 (GstRTPBaseDepayload * depayload, GstRTPBuffer * rtp)
{
GstBuffer *outbuf;
gboolean marker;
marker = gst_rtp_buffer_get_marker (rtp);
GST_DEBUG ("process : got %" G_GSIZE_FORMAT " bytes, mark %d ts %u seqn %d",
gst_buffer_get_size (rtp->buffer), marker,
gst_rtp_buffer_get_timestamp (rtp), gst_rtp_buffer_get_seq (rtp));
outbuf = gst_rtp_buffer_get_payload_buffer (rtp);
if (marker && outbuf) {
/* mark start of talkspurt with RESYNC */
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_RESYNC);
}
if (outbuf) {
gst_rtp_drop_non_audio_meta (depayload, outbuf);
}
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_SECONDARY, GST_TYPE_RTP_ILBC_DEPAY);
}