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GSM -> RTP and viceversa

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Original commit message from CVS:
GSM -> RTP and viceversa
This commit is contained in:
Zeeshan Ali 2003-07-13 00:20:44 +00:00
parent 8c4aec9998
commit 333468b5d4
16 changed files with 1536 additions and 28 deletions
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4
gst/rtp/Makefile.am
View file

@ -2,9 +2,9 @@ plugindir = $(libdir)/gstreamer-@GST_MAJORMINOR@
plugin_LTLIBRARIES = libgstrtp.la
libgstrtp_la_SOURCES = gstrtp.c gstrtpL16enc.c gstrtpL16parse.c rtp-packet.c
libgstrtp_la_SOURCES = gstrtp.c gstrtpL16enc.c gstrtpL16parse.c gstrtpgsmenc.c gstrtpgsmparse.c rtp-packet.c
libgstrtp_la_CFLAGS = $(GST_CFLAGS)
libgstrtp_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
noinst_HEADERS = gstrtpL16enc.h gstrtpL16parse.h gstrtp-common.h rtp-packet.h
noinst_HEADERS = gstrtpL16enc.h gstrtpL16parse.h gstrtpgsmenc.h gstrtpgsmparse.h gstrtp-common.h rtp-packet.h

4
gst/rtp/gstrtp.c
View file

@ -19,12 +19,16 @@
#include "gstrtpL16enc.h"
#include "gstrtpL16parse.h"
#include "gstrtpgsmenc.h"
#include "gstrtpgsmparse.h"
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
gst_rtpL16enc_plugin_init (module, plugin);
gst_rtpL16parse_plugin_init (module, plugin);
gst_rtpgsmenc_plugin_init (module, plugin);
gst_rtpgsmparse_plugin_init (module, plugin);
return TRUE;
}

6
gst/rtp/gstrtpL16depay.c
View file

@ -146,11 +146,11 @@ gst_rtpL16parse_init (GstRtpL16Parse * rtpL16parse)
void
gst_rtpL16parse_ntohs (GstBuffer *buf)
{
guint16 *i, *len;
gint16 *i, *len;
/* FIXME: is this code correct or even sane at all? */
i = (guint16 *) GST_BUFFER_DATA(buf);
len = i + GST_BUFFER_SIZE (buf) / sizeof (guint16 *);
i = (gint16 *) GST_BUFFER_DATA(buf);
len = i + GST_BUFFER_SIZE (buf) / sizeof (gint16 *);
for (; i<len; i++) {
*i = g_ntohs (*i);

6
gst/rtp/gstrtpL16enc.c
View file

@ -164,11 +164,11 @@ gst_rtpL16enc_sinkconnect (GstPad * pad, GstCaps * caps)
void
gst_rtpL16enc_htons (GstBuffer *buf)
{
guint16 *i, *len;
gint16 *i, *len;
/* FIXME: is this code correct or even sane at all? */
i = (guint16 *) GST_BUFFER_DATA(buf);
len = i + GST_BUFFER_SIZE (buf) / sizeof (guint16 *);
i = (gint16 *) GST_BUFFER_DATA(buf);
len = i + GST_BUFFER_SIZE (buf) / sizeof (gint16 *);
for (; i<len; i++) {
*i = g_htons (*i);

6
gst/rtp/gstrtpL16parse.c
View file

@ -146,11 +146,11 @@ gst_rtpL16parse_init (GstRtpL16Parse * rtpL16parse)
void
gst_rtpL16parse_ntohs (GstBuffer *buf)
{
guint16 *i, *len;
gint16 *i, *len;
/* FIXME: is this code correct or even sane at all? */
i = (guint16 *) GST_BUFFER_DATA(buf);
len = i + GST_BUFFER_SIZE (buf) / sizeof (guint16 *);
i = (gint16 *) GST_BUFFER_DATA(buf);
len = i + GST_BUFFER_SIZE (buf) / sizeof (gint16 *);
for (; i<len; i++) {
*i = g_ntohs (*i);

6
gst/rtp/gstrtpL16pay.c
View file

@ -164,11 +164,11 @@ gst_rtpL16enc_sinkconnect (GstPad * pad, GstCaps * caps)
void
gst_rtpL16enc_htons (GstBuffer *buf)
{
guint16 *i, *len;
gint16 *i, *len;
/* FIXME: is this code correct or even sane at all? */
i = (guint16 *) GST_BUFFER_DATA(buf);
len = i + GST_BUFFER_SIZE (buf) / sizeof (guint16 *);
i = (gint16 *) GST_BUFFER_DATA(buf);
len = i + GST_BUFFER_SIZE (buf) / sizeof (gint16 *);
for (; i<len; i++) {
*i = g_htons (*i);

295
gst/rtp/gstrtpgsmdepay.c Normal file
View file

@ -0,0 +1,295 @@
/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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
*/
#include <string.h>
#include "gstrtpgsmparse.h"
#include "gstrtp-common.h"
/* elementfactory information */
static GstElementDetails gst_rtp_L16parse_details = {
"RTP packet parser",
"RtpGSMParse",
"GPL",
"Extracts GSM audio from RTP packets",
VERSION,
"Zeeshan Ali <zak147@yahoo.com>",
"(C) 2003",
};
/* RtpGSMParse signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_FREQUENCY
};
GST_PAD_TEMPLATE_FACTORY (src_factory,
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"gsm_gsm",
"audio/x-gsm",
"rate", GST_PROPS_INT_RANGE (1000, 48000))
)
GST_PAD_TEMPLATE_FACTORY (sink_factory,
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"rtp",
"application/x-rtp",
NULL)
);
static void gst_rtpgsmparse_class_init (GstRtpGSMParseClass * klass);
static void gst_rtpgsmparse_init (GstRtpGSMParse * rtpgsmparse);
static void gst_rtpgsmparse_chain (GstPad * pad, GstBuffer * buf);
static void gst_rtpgsmparse_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_rtpgsmparse_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstElementStateReturn gst_rtpgsmparse_change_state (GstElement * element);
static GstElementClass *parent_class = NULL;
static GType gst_rtpgsmparse_get_type (void)
{
static GType rtpgsmparse_type = 0;
if (!rtpgsmparse_type) {
static const GTypeInfo rtpgsmparse_info = {
sizeof (GstRtpGSMParseClass),
NULL,
NULL,
(GClassInitFunc) gst_rtpgsmparse_class_init,
NULL,
NULL,
sizeof (GstRtpGSMParse),
0,
(GInstanceInitFunc) gst_rtpgsmparse_init,
};
rtpgsmparse_type = g_type_register_static (GST_TYPE_ELEMENT, "GstRtpGSMParse", &rtpgsmparse_info, 0);
}
return rtpgsmparse_type;
}
static void
gst_rtpgsmparse_class_init (GstRtpGSMParseClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FREQUENCY,
g_param_spec_int ("frequency", "frequency", "frequency",
G_MININT, G_MAXINT, 8000, G_PARAM_READWRITE));
gobject_class->set_property = gst_rtpgsmparse_set_property;
gobject_class->get_property = gst_rtpgsmparse_get_property;
gstelement_class->change_state = gst_rtpgsmparse_change_state;
}
static void
gst_rtpgsmparse_init (GstRtpGSMParse * rtpgsmparse)
{
rtpgsmparse->srcpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (src_factory), "src");
rtpgsmparse->sinkpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (sink_factory), "sink");
gst_element_add_pad (GST_ELEMENT (rtpgsmparse), rtpgsmparse->srcpad);
gst_element_add_pad (GST_ELEMENT (rtpgsmparse), rtpgsmparse->sinkpad);
gst_pad_set_chain_function (rtpgsmparse->sinkpad, gst_rtpgsmparse_chain);
rtpgsmparse->frequency = 8000;
}
void
gst_rtpgsmparse_ntohs (GstBuffer *buf)
{
gint16 *i, *len;
/* FIXME: is this code correct or even sane at all? */
i = (gint16 *) GST_BUFFER_DATA(buf);
len = i + GST_BUFFER_SIZE (buf) / sizeof (gint16 *);
for (; i<len; i++) {
*i = g_ntohs (*i);
}
}
void
gst_rtpgsm_caps_nego (GstRtpGSMParse *rtpgsmparse)
{
GstCaps *caps;
caps = GST_CAPS_NEW (
"gsm_gsm",
"audio/x-gsm",
"rate", GST_PROPS_INT (rtpgsmparse->frequency));
gst_pad_try_set_caps (rtpgsmparse->srcpad, caps);
}
static void
gst_rtpgsmparse_chain (GstPad * pad, GstBuffer * buf)
{
GstRtpGSMParse *rtpgsmparse;
GstBuffer *outbuf;
Rtp_Packet packet;
rtp_payload_t pt;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
rtpgsmparse = GST_RTP_GSM_PARSE (GST_OBJECT_PARENT (pad));
g_return_if_fail (rtpgsmparse != NULL);
g_return_if_fail (GST_IS_RTP_GSM_PARSE (rtpgsmparse));
if (GST_IS_EVENT (buf)) {
GstEvent *event = GST_EVENT (buf);
gst_pad_event_default (pad, event);
return;
}
if (GST_PAD_CAPS (rtpgsmparse->srcpad) == NULL) {
gst_rtpgsm_caps_nego (rtpgsmparse);
}
packet = rtp_packet_new_copy_data (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
pt = rtp_packet_get_payload_type (packet);
if (pt != PAYLOAD_GSM) {
g_warning ("Unexpected paload type %u\n", pt);
rtp_packet_free (packet);
gst_buffer_unref (buf);
return;
}
outbuf = gst_buffer_new ();
GST_BUFFER_SIZE (outbuf) = rtp_packet_get_payload_len (packet);
GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf));
GST_BUFFER_TIMESTAMP (outbuf) = g_ntohl (rtp_packet_get_timestamp (packet)) * GST_SECOND;
memcpy (GST_BUFFER_DATA (outbuf), rtp_packet_get_payload (packet), GST_BUFFER_SIZE (outbuf));
GST_DEBUG (0,"gst_rtpgsmparse_chain: pushing buffer of size %d", GST_BUFFER_SIZE(outbuf));
/* FIXME: According to RFC 1890, this is required, right? */
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
gst_rtpgsmparse_ntohs (outbuf);
#endif
gst_pad_push (rtpgsmparse->srcpad, outbuf);
rtp_packet_free (packet);
gst_buffer_unref (buf);
}
static void
gst_rtpgsmparse_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstRtpGSMParse *rtpgsmparse;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_RTP_GSM_PARSE (object));
rtpgsmparse = GST_RTP_GSM_PARSE (object);
switch (prop_id) {
case ARG_FREQUENCY:
rtpgsmparse->frequency = g_value_get_int (value);
break;
default:
break;
}
}
static void
gst_rtpgsmparse_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
{
GstRtpGSMParse *rtpgsmparse;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_RTP_GSM_PARSE (object));
rtpgsmparse = GST_RTP_GSM_PARSE (object);
switch (prop_id) {
case ARG_FREQUENCY:
g_value_set_int (value, rtpgsmparse->frequency);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstElementStateReturn
gst_rtpgsmparse_change_state (GstElement * element)
{
GstRtpGSMParse *rtpgsmparse;
g_return_val_if_fail (GST_IS_RTP_GSM_PARSE (element), GST_STATE_FAILURE);
rtpgsmparse = GST_RTP_GSM_PARSE (element);
GST_DEBUG (0, "state pending %d\n", GST_STATE_PENDING (element));
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
break;
case GST_STATE_READY_TO_NULL:
break;
default:
break;
}
/* if we haven't failed already, give the parent class a chance to ;-) */
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
gboolean
gst_rtpgsmparse_plugin_init (GModule * module, GstPlugin * plugin)
{
GstElementFactory *rtpgsmparse;
rtpgsmparse = gst_element_factory_new ("rtpgsmparse", GST_TYPE_RTP_GSM_PARSE, &gst_rtp_L16parse_details);
g_return_val_if_fail (rtpgsmparse != NULL, FALSE);
gst_element_factory_add_pad_template (rtpgsmparse, GST_PAD_TEMPLATE_GET (src_factory));
gst_element_factory_add_pad_template (rtpgsmparse, GST_PAD_TEMPLATE_GET (sink_factory));
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (rtpgsmparse));
return TRUE;
}

70
gst/rtp/gstrtpgsmdepay.h Normal file
View file

@ -0,0 +1,70 @@
/* Gnome-Streamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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.
*/
#ifndef __GST_RTP_GSM_PARSE_H__
#define __GST_RTP_GSM_PARSE_H__
#include <gst/gst.h>
#include "rtp-packet.h"
#include "gstrtp-common.h"
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/* Definition of structure storing data for this element. */
typedef struct _GstRtpGSMParse GstRtpGSMParse;
struct _GstRtpGSMParse
{
GstElement element;
GstPad *sinkpad;
GstPad *srcpad;
guint frequency;
};
/* Standard definition defining a class for this element. */
typedef struct _GstRtpGSMParseClass GstRtpGSMParseClass;
struct _GstRtpGSMParseClass
{
GstElementClass parent_class;
};
/* Standard macros for defining types for this element. */
#define GST_TYPE_RTP_GSM_PARSE \
(gst_rtpgsmparse_get_type())
#define GST_RTP_GSM_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_GSM_PARSE,GstRtpGSMParse))
#define GST_RTP_GSM_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_GSM_PARSE,GstRtpGSMParse))
#define GST_IS_RTP_GSM_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_GSM_PARSE))
#define GST_IS_RTP_GSM_PARSE_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_GSM_PARSE))
gboolean gst_rtpgsmparse_plugin_init (GModule * module, GstPlugin * plugin);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_RTP_GSM_PARSE_H__ */

310
gst/rtp/gstrtpgsmenc.c Normal file
View file

@ -0,0 +1,310 @@
/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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.
*/
#include <string.h>
#include "gstrtpgsmenc.h"
/* elementfactory information */
static GstElementDetails gst_rtpgsmenc_details = {
"RTP GSM Audio Encoder",
"RtpGSMEnc",
"LGPL",
"Encodes GSM audio into an RTP packet",
VERSION,
"Zeeshan Ali <zak147@yahoo.com>",
"(C) 2003",
};
/* RtpGSMEnc signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
/* FILL ME */
ARG_0,
};
GST_PAD_TEMPLATE_FACTORY (sink_factory,
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"gsm_gsm",
"audio/x-gsm",
"rate", GST_PROPS_INT_RANGE (1000, 48000)
)
);
GST_PAD_TEMPLATE_FACTORY (src_factory,
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"rtp",
"application/x-rtp",
NULL)
);
static void gst_rtpgsmenc_class_init (GstRtpGSMEncClass * klass);
static void gst_rtpgsmenc_init (GstRtpGSMEnc * rtpgsmenc);
static void gst_rtpgsmenc_chain (GstPad * pad, GstBuffer * buf);
static void gst_rtpgsmenc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_rtpgsmenc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstPadLinkReturn gst_rtpgsmenc_sinkconnect (GstPad * pad, GstCaps * caps);
static GstElementStateReturn gst_rtpgsmenc_change_state (GstElement * element);
static GstElementClass *parent_class = NULL;
static GType gst_rtpgsmenc_get_type (void)
{
static GType rtpgsmenc_type = 0;
if (!rtpgsmenc_type) {
static const GTypeInfo rtpgsmenc_info = {
sizeof (GstRtpGSMEncClass),
NULL,
NULL,
(GClassInitFunc) gst_rtpgsmenc_class_init,
NULL,
NULL,
sizeof (GstRtpGSMEnc),
0,
(GInstanceInitFunc) gst_rtpgsmenc_init,
};
rtpgsmenc_type = g_type_register_static (GST_TYPE_ELEMENT, "GstRtpGSMEnc", &rtpgsmenc_info, 0);
}
return rtpgsmenc_type;
}
static void
gst_rtpgsmenc_class_init (GstRtpGSMEncClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gobject_class->set_property = gst_rtpgsmenc_set_property;
gobject_class->get_property = gst_rtpgsmenc_get_property;
gstelement_class->change_state = gst_rtpgsmenc_change_state;
}
static void
gst_rtpgsmenc_init (GstRtpGSMEnc * rtpgsmenc)
{
rtpgsmenc->sinkpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (sink_factory), "sink");
rtpgsmenc->srcpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (src_factory), "src");
gst_element_add_pad (GST_ELEMENT (rtpgsmenc), rtpgsmenc->sinkpad);
gst_element_add_pad (GST_ELEMENT (rtpgsmenc), rtpgsmenc->srcpad);
gst_pad_set_chain_function (rtpgsmenc->sinkpad, gst_rtpgsmenc_chain);
gst_pad_set_link_function (rtpgsmenc->sinkpad, gst_rtpgsmenc_sinkconnect);
rtpgsmenc->frequency = 8000;
rtpgsmenc->next_time = 0;
rtpgsmenc->time_interval = 0;
rtpgsmenc->seq = 0;
rtpgsmenc->ssrc = random ();
}
static GstPadLinkReturn
gst_rtpgsmenc_sinkconnect (GstPad * pad, GstCaps * caps)
{
GstRtpGSMEnc *rtpgsmenc;
rtpgsmenc = GST_RTP_GSM_ENC (gst_pad_get_parent (pad));
gst_caps_get_int (caps, "rate", &rtpgsmenc->frequency);
/* Pre-calculate what we can */
rtpgsmenc->time_interval = GST_SECOND / (2 * rtpgsmenc->frequency);
return GST_PAD_LINK_OK;
}
void
gst_rtpgsmenc_htons (GstBuffer *buf)
{
gint16 *i, *len;
/* FIXME: is this code correct or even sane at all? */
i = (gint16 *) GST_BUFFER_DATA(buf);
len = i + GST_BUFFER_SIZE (buf) / sizeof (gint16 *);
for (; i<len; i++) {
*i = g_htons (*i);
}
}
static void
gst_rtpgsmenc_chain (GstPad * pad, GstBuffer * buf)
{
GstRtpGSMEnc *rtpgsmenc;
GstBuffer *outbuf;
Rtp_Packet packet;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
rtpgsmenc = GST_RTP_GSM_ENC (GST_OBJECT_PARENT (pad));
g_return_if_fail (rtpgsmenc != NULL);
g_return_if_fail (GST_IS_RTP_GSM_ENC (rtpgsmenc));
if (GST_IS_EVENT (buf)) {
GstEvent *event = GST_EVENT (buf);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_DISCONTINUOUS:
GST_DEBUG (GST_CAT_EVENT, "discont");
rtpgsmenc->next_time = 0;
gst_pad_event_default (pad, event);
return;
default:
gst_pad_event_default (pad, event);
return;
}
}
/* We only need the header */
packet = rtp_packet_new_allocate (0, 0, 0);
rtp_packet_set_csrc_count (packet, 0);
rtp_packet_set_extension (packet, 0);
rtp_packet_set_padding (packet, 0);
rtp_packet_set_version (packet, RTP_VERSION);
rtp_packet_set_marker (packet, 0);
rtp_packet_set_ssrc (packet, g_htonl (rtpgsmenc->ssrc));
rtp_packet_set_seq (packet, g_htons (rtpgsmenc->seq));
rtp_packet_set_timestamp (packet, g_htonl ((guint32) rtpgsmenc->next_time / GST_SECOND));
rtp_packet_set_payload_type (packet, (guint8) PAYLOAD_GSM);
/* FIXME: According to RFC 1890, this is required, right? */
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
gst_rtpgsmenc_htons (buf);
#endif
outbuf = gst_buffer_new ();
GST_BUFFER_SIZE (outbuf) = rtp_packet_get_packet_len (packet) + GST_BUFFER_SIZE (buf);
GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf));
GST_BUFFER_TIMESTAMP (outbuf) = rtpgsmenc->next_time;
memcpy (GST_BUFFER_DATA (outbuf), packet->data, rtp_packet_get_packet_len (packet));
memcpy (GST_BUFFER_DATA (outbuf) + rtp_packet_get_packet_len(packet), GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
GST_DEBUG (0,"gst_rtpgsmenc_chain: pushing buffer of size %d", GST_BUFFER_SIZE(outbuf));
gst_pad_push (rtpgsmenc->srcpad, outbuf);
++rtpgsmenc->seq;
rtpgsmenc->next_time += rtpgsmenc->time_interval * GST_BUFFER_SIZE (buf);
rtp_packet_free (packet);
gst_buffer_unref (buf);
}
static void
gst_rtpgsmenc_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstRtpGSMEnc *rtpgsmenc;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_RTP_GSM_ENC (object));
rtpgsmenc = GST_RTP_GSM_ENC (object);
switch (prop_id) {
default:
break;
}
}
static void
gst_rtpgsmenc_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
{
GstRtpGSMEnc *rtpgsmenc;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_RTP_GSM_ENC (object));
rtpgsmenc = GST_RTP_GSM_ENC (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstElementStateReturn
gst_rtpgsmenc_change_state (GstElement * element)
{
GstRtpGSMEnc *rtpgsmenc;
g_return_val_if_fail (GST_IS_RTP_GSM_ENC (element), GST_STATE_FAILURE);
rtpgsmenc = GST_RTP_GSM_ENC (element);
GST_DEBUG (0, "state pending %d\n", GST_STATE_PENDING (element));
/* if going down into NULL state, close the file if it's open */
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
break;
case GST_STATE_READY_TO_NULL:
break;
default:
break;
}
/* if we haven't failed already, give the parent class a chance to ;-) */
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
gboolean
gst_rtpgsmenc_plugin_init (GModule * module, GstPlugin * plugin)
{
GstElementFactory *rtpgsmenc;
rtpgsmenc = gst_element_factory_new ("rtpgsmenc", GST_TYPE_RTP_GSM_ENC, &gst_rtpgsmenc_details);
g_return_val_if_fail (rtpgsmenc != NULL, FALSE);
gst_element_factory_add_pad_template (rtpgsmenc, GST_PAD_TEMPLATE_GET (sink_factory));
gst_element_factory_add_pad_template (rtpgsmenc, GST_PAD_TEMPLATE_GET (src_factory));
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (rtpgsmenc));
return TRUE;
}

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/* Gnome-Streamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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.
*/
#ifndef __GST_RTP_GSM_ENC_H__
#define __GST_RTP_GSM_ENC_H__
#include <gst/gst.h>
#include "rtp-packet.h"
#include "gstrtp-common.h"
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/* Definition of structure storing data for this element. */
typedef struct _GstRtpGSMEnc GstRtpGSMEnc;
struct _GstRtpGSMEnc
{
GstElement element;
GstPad *sinkpad;
GstPad *srcpad;
guint frequency;
/* the timestamp of the next frame */
guint64 next_time;
/* the interval between frames */
guint64 time_interval;
guint32 ssrc;
guint16 seq;
};
/* Standard definition defining a class for this element. */
typedef struct _GstRtpGSMEncClass GstRtpGSMEncClass;
struct _GstRtpGSMEncClass
{
GstElementClass parent_class;
};
/* Standard macros for defining types for this element. */
#define GST_TYPE_RTP_GSM_ENC \
(gst_rtpgsmenc_get_type())
#define GST_RTP_GSM_ENC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_GSM_ENC,GstRtpGSMEnc))
#define GST_RTP_GSM_ENC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_GSM_ENC,GstRtpGSMEnc))
#define GST_IS_RTP_GSM_ENC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_GSM_ENC))
#define GST_IS_RTP_GSM_ENC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_GSM_ENC))
gboolean gst_rtpgsmenc_plugin_init (GModule * module, GstPlugin * plugin);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_RTP_GSM_ENC_H__ */

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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
*/
#include <string.h>
#include "gstrtpgsmparse.h"
#include "gstrtp-common.h"
/* elementfactory information */
static GstElementDetails gst_rtp_L16parse_details = {
"RTP packet parser",
"RtpGSMParse",
"GPL",
"Extracts GSM audio from RTP packets",
VERSION,
"Zeeshan Ali <zak147@yahoo.com>",
"(C) 2003",
};
/* RtpGSMParse signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_FREQUENCY
};
GST_PAD_TEMPLATE_FACTORY (src_factory,
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"gsm_gsm",
"audio/x-gsm",
"rate", GST_PROPS_INT_RANGE (1000, 48000))
)
GST_PAD_TEMPLATE_FACTORY (sink_factory,
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"rtp",
"application/x-rtp",
NULL)
);
static void gst_rtpgsmparse_class_init (GstRtpGSMParseClass * klass);
static void gst_rtpgsmparse_init (GstRtpGSMParse * rtpgsmparse);
static void gst_rtpgsmparse_chain (GstPad * pad, GstBuffer * buf);
static void gst_rtpgsmparse_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_rtpgsmparse_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstElementStateReturn gst_rtpgsmparse_change_state (GstElement * element);
static GstElementClass *parent_class = NULL;
static GType gst_rtpgsmparse_get_type (void)
{
static GType rtpgsmparse_type = 0;
if (!rtpgsmparse_type) {
static const GTypeInfo rtpgsmparse_info = {
sizeof (GstRtpGSMParseClass),
NULL,
NULL,
(GClassInitFunc) gst_rtpgsmparse_class_init,
NULL,
NULL,
sizeof (GstRtpGSMParse),
0,
(GInstanceInitFunc) gst_rtpgsmparse_init,
};
rtpgsmparse_type = g_type_register_static (GST_TYPE_ELEMENT, "GstRtpGSMParse", &rtpgsmparse_info, 0);
}
return rtpgsmparse_type;
}
static void
gst_rtpgsmparse_class_init (GstRtpGSMParseClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FREQUENCY,
g_param_spec_int ("frequency", "frequency", "frequency",
G_MININT, G_MAXINT, 8000, G_PARAM_READWRITE));
gobject_class->set_property = gst_rtpgsmparse_set_property;
gobject_class->get_property = gst_rtpgsmparse_get_property;
gstelement_class->change_state = gst_rtpgsmparse_change_state;
}
static void
gst_rtpgsmparse_init (GstRtpGSMParse * rtpgsmparse)
{
rtpgsmparse->srcpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (src_factory), "src");
rtpgsmparse->sinkpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (sink_factory), "sink");
gst_element_add_pad (GST_ELEMENT (rtpgsmparse), rtpgsmparse->srcpad);
gst_element_add_pad (GST_ELEMENT (rtpgsmparse), rtpgsmparse->sinkpad);
gst_pad_set_chain_function (rtpgsmparse->sinkpad, gst_rtpgsmparse_chain);
rtpgsmparse->frequency = 8000;
}
void
gst_rtpgsmparse_ntohs (GstBuffer *buf)
{
gint16 *i, *len;
/* FIXME: is this code correct or even sane at all? */
i = (gint16 *) GST_BUFFER_DATA(buf);
len = i + GST_BUFFER_SIZE (buf) / sizeof (gint16 *);
for (; i<len; i++) {
*i = g_ntohs (*i);
}
}
void
gst_rtpgsm_caps_nego (GstRtpGSMParse *rtpgsmparse)
{
GstCaps *caps;
caps = GST_CAPS_NEW (
"gsm_gsm",
"audio/x-gsm",
"rate", GST_PROPS_INT (rtpgsmparse->frequency));
gst_pad_try_set_caps (rtpgsmparse->srcpad, caps);
}
static void
gst_rtpgsmparse_chain (GstPad * pad, GstBuffer * buf)
{
GstRtpGSMParse *rtpgsmparse;
GstBuffer *outbuf;
Rtp_Packet packet;
rtp_payload_t pt;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
rtpgsmparse = GST_RTP_GSM_PARSE (GST_OBJECT_PARENT (pad));
g_return_if_fail (rtpgsmparse != NULL);
g_return_if_fail (GST_IS_RTP_GSM_PARSE (rtpgsmparse));
if (GST_IS_EVENT (buf)) {
GstEvent *event = GST_EVENT (buf);
gst_pad_event_default (pad, event);
return;
}
if (GST_PAD_CAPS (rtpgsmparse->srcpad) == NULL) {
gst_rtpgsm_caps_nego (rtpgsmparse);
}
packet = rtp_packet_new_copy_data (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
pt = rtp_packet_get_payload_type (packet);
if (pt != PAYLOAD_GSM) {
g_warning ("Unexpected paload type %u\n", pt);
rtp_packet_free (packet);
gst_buffer_unref (buf);
return;
}
outbuf = gst_buffer_new ();
GST_BUFFER_SIZE (outbuf) = rtp_packet_get_payload_len (packet);
GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf));
GST_BUFFER_TIMESTAMP (outbuf) = g_ntohl (rtp_packet_get_timestamp (packet)) * GST_SECOND;
memcpy (GST_BUFFER_DATA (outbuf), rtp_packet_get_payload (packet), GST_BUFFER_SIZE (outbuf));
GST_DEBUG (0,"gst_rtpgsmparse_chain: pushing buffer of size %d", GST_BUFFER_SIZE(outbuf));
/* FIXME: According to RFC 1890, this is required, right? */
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
gst_rtpgsmparse_ntohs (outbuf);
#endif
gst_pad_push (rtpgsmparse->srcpad, outbuf);
rtp_packet_free (packet);
gst_buffer_unref (buf);
}
static void
gst_rtpgsmparse_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstRtpGSMParse *rtpgsmparse;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_RTP_GSM_PARSE (object));
rtpgsmparse = GST_RTP_GSM_PARSE (object);
switch (prop_id) {
case ARG_FREQUENCY:
rtpgsmparse->frequency = g_value_get_int (value);
break;
default:
break;
}
}
static void
gst_rtpgsmparse_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
{
GstRtpGSMParse *rtpgsmparse;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_RTP_GSM_PARSE (object));
rtpgsmparse = GST_RTP_GSM_PARSE (object);
switch (prop_id) {
case ARG_FREQUENCY:
g_value_set_int (value, rtpgsmparse->frequency);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstElementStateReturn
gst_rtpgsmparse_change_state (GstElement * element)
{
GstRtpGSMParse *rtpgsmparse;
g_return_val_if_fail (GST_IS_RTP_GSM_PARSE (element), GST_STATE_FAILURE);
rtpgsmparse = GST_RTP_GSM_PARSE (element);
GST_DEBUG (0, "state pending %d\n", GST_STATE_PENDING (element));
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
break;
case GST_STATE_READY_TO_NULL:
break;
default:
break;
}
/* if we haven't failed already, give the parent class a chance to ;-) */
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
gboolean
gst_rtpgsmparse_plugin_init (GModule * module, GstPlugin * plugin)
{
GstElementFactory *rtpgsmparse;
rtpgsmparse = gst_element_factory_new ("rtpgsmparse", GST_TYPE_RTP_GSM_PARSE, &gst_rtp_L16parse_details);
g_return_val_if_fail (rtpgsmparse != NULL, FALSE);
gst_element_factory_add_pad_template (rtpgsmparse, GST_PAD_TEMPLATE_GET (src_factory));
gst_element_factory_add_pad_template (rtpgsmparse, GST_PAD_TEMPLATE_GET (sink_factory));
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (rtpgsmparse));
return TRUE;
}

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/* Gnome-Streamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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.
*/
#ifndef __GST_RTP_GSM_PARSE_H__
#define __GST_RTP_GSM_PARSE_H__
#include <gst/gst.h>
#include "rtp-packet.h"
#include "gstrtp-common.h"
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/* Definition of structure storing data for this element. */
typedef struct _GstRtpGSMParse GstRtpGSMParse;
struct _GstRtpGSMParse
{
GstElement element;
GstPad *sinkpad;
GstPad *srcpad;
guint frequency;
};
/* Standard definition defining a class for this element. */
typedef struct _GstRtpGSMParseClass GstRtpGSMParseClass;
struct _GstRtpGSMParseClass
{
GstElementClass parent_class;
};
/* Standard macros for defining types for this element. */
#define GST_TYPE_RTP_GSM_PARSE \
(gst_rtpgsmparse_get_type())
#define GST_RTP_GSM_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_GSM_PARSE,GstRtpGSMParse))
#define GST_RTP_GSM_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_GSM_PARSE,GstRtpGSMParse))
#define GST_IS_RTP_GSM_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_GSM_PARSE))
#define GST_IS_RTP_GSM_PARSE_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_GSM_PARSE))
gboolean gst_rtpgsmparse_plugin_init (GModule * module, GstPlugin * plugin);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_RTP_GSM_PARSE_H__ */

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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.
*/
#include <string.h>
#include "gstrtpgsmenc.h"
/* elementfactory information */
static GstElementDetails gst_rtpgsmenc_details = {
"RTP GSM Audio Encoder",
"RtpGSMEnc",
"LGPL",
"Encodes GSM audio into an RTP packet",
VERSION,
"Zeeshan Ali <zak147@yahoo.com>",
"(C) 2003",
};
/* RtpGSMEnc signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
/* FILL ME */
ARG_0,
};
GST_PAD_TEMPLATE_FACTORY (sink_factory,
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"gsm_gsm",
"audio/x-gsm",
"rate", GST_PROPS_INT_RANGE (1000, 48000)
)
);
GST_PAD_TEMPLATE_FACTORY (src_factory,
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"rtp",
"application/x-rtp",
NULL)
);
static void gst_rtpgsmenc_class_init (GstRtpGSMEncClass * klass);
static void gst_rtpgsmenc_init (GstRtpGSMEnc * rtpgsmenc);
static void gst_rtpgsmenc_chain (GstPad * pad, GstBuffer * buf);
static void gst_rtpgsmenc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_rtpgsmenc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstPadLinkReturn gst_rtpgsmenc_sinkconnect (GstPad * pad, GstCaps * caps);
static GstElementStateReturn gst_rtpgsmenc_change_state (GstElement * element);
static GstElementClass *parent_class = NULL;
static GType gst_rtpgsmenc_get_type (void)
{
static GType rtpgsmenc_type = 0;
if (!rtpgsmenc_type) {
static const GTypeInfo rtpgsmenc_info = {
sizeof (GstRtpGSMEncClass),
NULL,
NULL,
(GClassInitFunc) gst_rtpgsmenc_class_init,
NULL,
NULL,
sizeof (GstRtpGSMEnc),
0,
(GInstanceInitFunc) gst_rtpgsmenc_init,
};
rtpgsmenc_type = g_type_register_static (GST_TYPE_ELEMENT, "GstRtpGSMEnc", &rtpgsmenc_info, 0);
}
return rtpgsmenc_type;
}
static void
gst_rtpgsmenc_class_init (GstRtpGSMEncClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gobject_class->set_property = gst_rtpgsmenc_set_property;
gobject_class->get_property = gst_rtpgsmenc_get_property;
gstelement_class->change_state = gst_rtpgsmenc_change_state;
}
static void
gst_rtpgsmenc_init (GstRtpGSMEnc * rtpgsmenc)
{
rtpgsmenc->sinkpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (sink_factory), "sink");
rtpgsmenc->srcpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (src_factory), "src");
gst_element_add_pad (GST_ELEMENT (rtpgsmenc), rtpgsmenc->sinkpad);
gst_element_add_pad (GST_ELEMENT (rtpgsmenc), rtpgsmenc->srcpad);
gst_pad_set_chain_function (rtpgsmenc->sinkpad, gst_rtpgsmenc_chain);
gst_pad_set_link_function (rtpgsmenc->sinkpad, gst_rtpgsmenc_sinkconnect);
rtpgsmenc->frequency = 8000;
rtpgsmenc->next_time = 0;
rtpgsmenc->time_interval = 0;
rtpgsmenc->seq = 0;
rtpgsmenc->ssrc = random ();
}
static GstPadLinkReturn
gst_rtpgsmenc_sinkconnect (GstPad * pad, GstCaps * caps)
{
GstRtpGSMEnc *rtpgsmenc;
rtpgsmenc = GST_RTP_GSM_ENC (gst_pad_get_parent (pad));
gst_caps_get_int (caps, "rate", &rtpgsmenc->frequency);
/* Pre-calculate what we can */
rtpgsmenc->time_interval = GST_SECOND / (2 * rtpgsmenc->frequency);
return GST_PAD_LINK_OK;
}
void
gst_rtpgsmenc_htons (GstBuffer *buf)
{
gint16 *i, *len;
/* FIXME: is this code correct or even sane at all? */
i = (gint16 *) GST_BUFFER_DATA(buf);
len = i + GST_BUFFER_SIZE (buf) / sizeof (gint16 *);
for (; i<len; i++) {
*i = g_htons (*i);
}
}
static void
gst_rtpgsmenc_chain (GstPad * pad, GstBuffer * buf)
{
GstRtpGSMEnc *rtpgsmenc;
GstBuffer *outbuf;
Rtp_Packet packet;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
rtpgsmenc = GST_RTP_GSM_ENC (GST_OBJECT_PARENT (pad));
g_return_if_fail (rtpgsmenc != NULL);
g_return_if_fail (GST_IS_RTP_GSM_ENC (rtpgsmenc));
if (GST_IS_EVENT (buf)) {
GstEvent *event = GST_EVENT (buf);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_DISCONTINUOUS:
GST_DEBUG (GST_CAT_EVENT, "discont");
rtpgsmenc->next_time = 0;
gst_pad_event_default (pad, event);
return;
default:
gst_pad_event_default (pad, event);
return;
}
}
/* We only need the header */
packet = rtp_packet_new_allocate (0, 0, 0);
rtp_packet_set_csrc_count (packet, 0);
rtp_packet_set_extension (packet, 0);
rtp_packet_set_padding (packet, 0);
rtp_packet_set_version (packet, RTP_VERSION);
rtp_packet_set_marker (packet, 0);
rtp_packet_set_ssrc (packet, g_htonl (rtpgsmenc->ssrc));
rtp_packet_set_seq (packet, g_htons (rtpgsmenc->seq));
rtp_packet_set_timestamp (packet, g_htonl ((guint32) rtpgsmenc->next_time / GST_SECOND));
rtp_packet_set_payload_type (packet, (guint8) PAYLOAD_GSM);
/* FIXME: According to RFC 1890, this is required, right? */
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
gst_rtpgsmenc_htons (buf);
#endif
outbuf = gst_buffer_new ();
GST_BUFFER_SIZE (outbuf) = rtp_packet_get_packet_len (packet) + GST_BUFFER_SIZE (buf);
GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf));
GST_BUFFER_TIMESTAMP (outbuf) = rtpgsmenc->next_time;
memcpy (GST_BUFFER_DATA (outbuf), packet->data, rtp_packet_get_packet_len (packet));
memcpy (GST_BUFFER_DATA (outbuf) + rtp_packet_get_packet_len(packet), GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
GST_DEBUG (0,"gst_rtpgsmenc_chain: pushing buffer of size %d", GST_BUFFER_SIZE(outbuf));
gst_pad_push (rtpgsmenc->srcpad, outbuf);
++rtpgsmenc->seq;
rtpgsmenc->next_time += rtpgsmenc->time_interval * GST_BUFFER_SIZE (buf);
rtp_packet_free (packet);
gst_buffer_unref (buf);
}
static void
gst_rtpgsmenc_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstRtpGSMEnc *rtpgsmenc;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_RTP_GSM_ENC (object));
rtpgsmenc = GST_RTP_GSM_ENC (object);
switch (prop_id) {
default:
break;
}
}
static void
gst_rtpgsmenc_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
{
GstRtpGSMEnc *rtpgsmenc;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_RTP_GSM_ENC (object));
rtpgsmenc = GST_RTP_GSM_ENC (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstElementStateReturn
gst_rtpgsmenc_change_state (GstElement * element)
{
GstRtpGSMEnc *rtpgsmenc;
g_return_val_if_fail (GST_IS_RTP_GSM_ENC (element), GST_STATE_FAILURE);
rtpgsmenc = GST_RTP_GSM_ENC (element);
GST_DEBUG (0, "state pending %d\n", GST_STATE_PENDING (element));
/* if going down into NULL state, close the file if it's open */
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
break;
case GST_STATE_READY_TO_NULL:
break;
default:
break;
}
/* if we haven't failed already, give the parent class a chance to ;-) */
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
gboolean
gst_rtpgsmenc_plugin_init (GModule * module, GstPlugin * plugin)
{
GstElementFactory *rtpgsmenc;
rtpgsmenc = gst_element_factory_new ("rtpgsmenc", GST_TYPE_RTP_GSM_ENC, &gst_rtpgsmenc_details);
g_return_val_if_fail (rtpgsmenc != NULL, FALSE);
gst_element_factory_add_pad_template (rtpgsmenc, GST_PAD_TEMPLATE_GET (sink_factory));
gst_element_factory_add_pad_template (rtpgsmenc, GST_PAD_TEMPLATE_GET (src_factory));
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (rtpgsmenc));
return TRUE;
}

79
gst/rtp/gstrtpgsmpay.h Normal file
View file

@ -0,0 +1,79 @@
/* Gnome-Streamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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.
*/
#ifndef __GST_RTP_GSM_ENC_H__
#define __GST_RTP_GSM_ENC_H__
#include <gst/gst.h>
#include "rtp-packet.h"
#include "gstrtp-common.h"
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/* Definition of structure storing data for this element. */
typedef struct _GstRtpGSMEnc GstRtpGSMEnc;
struct _GstRtpGSMEnc
{
GstElement element;
GstPad *sinkpad;
GstPad *srcpad;
guint frequency;
/* the timestamp of the next frame */
guint64 next_time;
/* the interval between frames */
guint64 time_interval;
guint32 ssrc;
guint16 seq;
};
/* Standard definition defining a class for this element. */
typedef struct _GstRtpGSMEncClass GstRtpGSMEncClass;
struct _GstRtpGSMEncClass
{
GstElementClass parent_class;
};
/* Standard macros for defining types for this element. */
#define GST_TYPE_RTP_GSM_ENC \
(gst_rtpgsmenc_get_type())
#define GST_RTP_GSM_ENC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_GSM_ENC,GstRtpGSMEnc))
#define GST_RTP_GSM_ENC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_GSM_ENC,GstRtpGSMEnc))
#define GST_IS_RTP_GSM_ENC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_GSM_ENC))
#define GST_IS_RTP_GSM_ENC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_GSM_ENC))
gboolean gst_rtpgsmenc_plugin_init (GModule * module, GstPlugin * plugin);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_RTP_GSM_ENC_H__ */

10
gst/rtp/rtp-packet.c
View file

@ -93,7 +93,7 @@ rtp_packet_free(Rtp_Packet packet)
g_free(packet);
}
Rtp_Packet
/*Rtp_Packet
rtp_packet_read(int fd, struct sockaddr *fromaddr, socklen_t *fromlen)
{
int packlen;
@ -105,14 +105,14 @@ rtp_packet_read(int fd, struct sockaddr *fromaddr, socklen_t *fromlen)
if (packlen < 0) {
g_error("rtp_packet_read: recvfrom: %d %s", errno, strerror(errno));
/*exit(1);*/
//exit(1);
return NULL;
}
return rtp_packet_new_take_data(buf, packlen);
}
}*/
void
/*void
rtp_packet_send(Rtp_Packet packet, int fd, struct sockaddr *toaddr, socklen_t tolen)
{
g_return_if_fail(packet != NULL);
@ -120,7 +120,7 @@ rtp_packet_send(Rtp_Packet packet, int fd, struct sockaddr *toaddr, socklen_t to
sendto(fd, (void *) packet -> data,
packet -> data_len, 0,
toaddr, tolen);
}
}*/
guint8
rtp_packet_get_version(Rtp_Packet packet)

14
gst/rtp/rtp-packet.h
View file

@ -22,9 +22,7 @@
#ifndef _RTP_PACKET_H
#define _RTP_PACKET_H 1
#include <netinet/in.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <glib.h>
#ifdef __sun
@ -35,11 +33,9 @@
extern "C" {
#endif
enum {
RTP_VERSION = 2,
RTP_HEADER_LEN = 12,
RTP_MTU = 2048
};
#define RTP_VERSION 2
#define RTP_HEADER_LEN 12
#define RTP_MTU 2048
typedef struct Rtp_Header *Rtp_Header;
@ -79,8 +75,8 @@ Rtp_Packet rtp_packet_new_copy_data(gpointer data, guint data_len);
Rtp_Packet rtp_packet_new_allocate(guint payload_len,
guint pad_len, guint csrc_count);
void rtp_packet_free(Rtp_Packet packet);
Rtp_Packet rtp_packet_read(int fd, struct sockaddr *fromaddr, socklen_t *fromlen);
void rtp_packet_send(Rtp_Packet packet, int fd, struct sockaddr *toaddr, socklen_t tolen);
//Rtp_Packet rtp_packet_read(int fd, struct sockaddr *fromaddr, socklen_t *fromlen);
//void rtp_packet_send(Rtp_Packet packet, int fd, struct sockaddr *toaddr, socklen_t tolen);
guint8 rtp_packet_get_version(Rtp_Packet packet);
void rtp_packet_set_version(Rtp_Packet packet, guint8 version);
guint8 rtp_packet_get_padding(Rtp_Packet packet);