mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-10-09 12:12:09 +00:00
0f4689cdf4
Original commit message from CVS: Just removed a couple of lines of weird code used during development/test time.
299 lines
7.9 KiB
C
299 lines
7.9 KiB
C
/* GStreamer
|
|
* Copyright (C) <2005> Edgard Lima <edgard.lima@indt.org.br>
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include <string.h>
|
|
#include <gst/rtp/gstrtpbuffer.h>
|
|
#include "gstrtpg711dec.h"
|
|
|
|
/* elementfactory information */
|
|
static GstElementDetails gst_rtp_g711dec_details = {
|
|
"RTP packet parser",
|
|
"Codec/Parser/Network",
|
|
"Extracts PCMU/PCMA audio from RTP packets",
|
|
"Edgard Lima <edgard.lima@indt.org.br>"
|
|
};
|
|
|
|
/* RtpG711Dec signals and args */
|
|
enum
|
|
{
|
|
/* FILL ME */
|
|
LAST_SIGNAL
|
|
};
|
|
|
|
enum
|
|
{
|
|
ARG_0
|
|
};
|
|
|
|
static GstStaticPadTemplate gst_rtpg711dec_sink_template =
|
|
GST_STATIC_PAD_TEMPLATE ("sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("application/x-rtp, "
|
|
"media = (string) \"audio\", "
|
|
"payload = (int) 0, "
|
|
"clock-rate = (int) 8000, "
|
|
"encoding-name = (string) \"PCMU\"; "
|
|
"application/x-rtp, "
|
|
"media = (string) \"audio\", "
|
|
"payload = (int) 8, "
|
|
"clock-rate = (int) 8000, " "encoding-name = (string) \"PCMA\"")
|
|
|
|
);
|
|
|
|
static GstStaticPadTemplate gst_rtpg711dec_src_template =
|
|
GST_STATIC_PAD_TEMPLATE ("src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("audio/x-mulaw, channels = (int) 1; "
|
|
"audio/x-alaw, channels = (int) 1")
|
|
);
|
|
|
|
static void gst_rtpg711dec_class_init (GstRtpG711DecClass * klass);
|
|
static void gst_rtpg711dec_base_init (GstRtpG711DecClass * klass);
|
|
static void gst_rtpg711dec_init (GstRtpG711Dec * rtpg711dec);
|
|
static gboolean gst_rtpg711dec_sink_setcaps (GstPad * pad, GstCaps * caps);
|
|
static GstFlowReturn gst_rtpg711dec_chain (GstPad * pad, GstBuffer * buffer);
|
|
|
|
static void gst_rtpg711dec_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec);
|
|
static void gst_rtpg711dec_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec);
|
|
|
|
static GstStateChangeReturn gst_rtpg711dec_change_state (GstElement * element,
|
|
GstStateChange transition);
|
|
|
|
static GstElementClass *parent_class = NULL;
|
|
|
|
static GType
|
|
gst_rtpg711dec_get_type (void)
|
|
{
|
|
static GType rtpg711dec_type = 0;
|
|
|
|
if (!rtpg711dec_type) {
|
|
static const GTypeInfo rtpg711dec_info = {
|
|
sizeof (GstRtpG711DecClass),
|
|
(GBaseInitFunc) gst_rtpg711dec_base_init,
|
|
NULL,
|
|
(GClassInitFunc) gst_rtpg711dec_class_init,
|
|
NULL,
|
|
NULL,
|
|
sizeof (GstRtpG711Dec),
|
|
0,
|
|
(GInstanceInitFunc) gst_rtpg711dec_init,
|
|
};
|
|
|
|
rtpg711dec_type =
|
|
g_type_register_static (GST_TYPE_ELEMENT, "GstRtpG711Dec",
|
|
&rtpg711dec_info, 0);
|
|
}
|
|
return rtpg711dec_type;
|
|
}
|
|
|
|
static void
|
|
gst_rtpg711dec_base_init (GstRtpG711DecClass * klass)
|
|
{
|
|
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
|
|
|
|
gst_element_class_add_pad_template (element_class,
|
|
gst_static_pad_template_get (&gst_rtpg711dec_src_template));
|
|
gst_element_class_add_pad_template (element_class,
|
|
gst_static_pad_template_get (&gst_rtpg711dec_sink_template));
|
|
gst_element_class_set_details (element_class, &gst_rtp_g711dec_details);
|
|
}
|
|
|
|
static void
|
|
gst_rtpg711dec_class_init (GstRtpG711DecClass * 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_rtpg711dec_set_property;
|
|
gobject_class->get_property = gst_rtpg711dec_get_property;
|
|
|
|
gstelement_class->change_state = gst_rtpg711dec_change_state;
|
|
}
|
|
|
|
static void
|
|
gst_rtpg711dec_init (GstRtpG711Dec * rtpg711dec)
|
|
{
|
|
rtpg711dec->srcpad =
|
|
gst_pad_new_from_template (gst_static_pad_template_get
|
|
(&gst_rtpg711dec_src_template), "src");
|
|
rtpg711dec->sinkpad =
|
|
gst_pad_new_from_template (gst_static_pad_template_get
|
|
(&gst_rtpg711dec_sink_template), "sink");
|
|
gst_element_add_pad (GST_ELEMENT (rtpg711dec), rtpg711dec->srcpad);
|
|
|
|
gst_pad_set_setcaps_function (rtpg711dec->sinkpad,
|
|
gst_rtpg711dec_sink_setcaps);
|
|
gst_element_add_pad (GST_ELEMENT (rtpg711dec), rtpg711dec->sinkpad);
|
|
gst_pad_set_chain_function (rtpg711dec->sinkpad, gst_rtpg711dec_chain);
|
|
}
|
|
|
|
static gboolean
|
|
gst_rtpg711dec_sink_setcaps (GstPad * pad, GstCaps * caps)
|
|
{
|
|
GstCaps *srccaps;
|
|
GstRtpG711Dec *rtpg711dec;
|
|
const gchar *enc_name;
|
|
GstStructure *structure;
|
|
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
|
|
enc_name = gst_structure_get_name (structure);
|
|
|
|
enc_name = gst_structure_get_string (structure, "encoding-name");
|
|
|
|
if (NULL == enc_name) {
|
|
return FALSE;
|
|
}
|
|
|
|
if (0 == strcmp ("PCMU", enc_name)) {
|
|
srccaps = gst_caps_new_simple ("audio/x-mulaw",
|
|
"channels", G_TYPE_INT, 1, "rate", G_TYPE_INT, 8000, NULL);
|
|
} else if (0 == strcmp ("PCMA", enc_name)) {
|
|
srccaps = gst_caps_new_simple ("audio/x-alaw",
|
|
"channels", G_TYPE_INT, 1, "rate", G_TYPE_INT, 8000, NULL);
|
|
} else {
|
|
return FALSE;
|
|
}
|
|
|
|
rtpg711dec = GST_RTP_G711_DEC (GST_OBJECT_PARENT (pad));
|
|
|
|
srccaps = gst_caps_new_simple ("audio/x-mulaw",
|
|
"channels", G_TYPE_INT, 1, "rate", G_TYPE_INT, 8000, NULL);
|
|
gst_pad_set_caps (rtpg711dec->srcpad, srccaps);
|
|
gst_caps_unref (srccaps);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_rtpg711dec_chain (GstPad * pad, GstBuffer * buf)
|
|
{
|
|
GstRtpG711Dec *rtpg711dec;
|
|
GstBuffer *outbuf;
|
|
GstFlowReturn ret;
|
|
|
|
rtpg711dec = GST_RTP_G711_DEC (gst_pad_get_parent (pad));
|
|
|
|
if (!gst_rtpbuffer_validate (buf))
|
|
goto bad_packet;
|
|
|
|
{
|
|
gint payload_len;
|
|
guint8 *payload;
|
|
|
|
payload_len = gst_rtpbuffer_get_payload_len (buf);
|
|
payload = gst_rtpbuffer_get_payload (buf);
|
|
|
|
outbuf = gst_buffer_new_and_alloc (payload_len);
|
|
|
|
GST_BUFFER_TIMESTAMP (outbuf) =
|
|
gst_rtpbuffer_get_timestamp (buf) * GST_SECOND / 8000;
|
|
|
|
memcpy (GST_BUFFER_DATA (outbuf), payload, payload_len);
|
|
|
|
GST_DEBUG ("pushing buffer of size %d", GST_BUFFER_SIZE (outbuf));
|
|
|
|
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (rtpg711dec->srcpad));
|
|
gst_buffer_unref (buf);
|
|
|
|
ret = gst_pad_push (rtpg711dec->srcpad, outbuf);
|
|
}
|
|
|
|
return ret;
|
|
|
|
bad_packet:
|
|
{
|
|
GST_DEBUG ("Packet did not validate");
|
|
gst_buffer_unref (buf);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_rtpg711dec_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstRtpG711Dec *rtpg711dec;
|
|
|
|
rtpg711dec = GST_RTP_G711_DEC (object);
|
|
|
|
switch (prop_id) {
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_rtpg711dec_get_property (GObject * object, guint prop_id, GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstRtpG711Dec *rtpg711dec;
|
|
|
|
rtpg711dec = GST_RTP_G711_DEC (object);
|
|
|
|
switch (prop_id) {
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_rtpg711dec_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstRtpG711Dec *rtpg711dec;
|
|
GstStateChangeReturn ret;
|
|
|
|
rtpg711dec = GST_RTP_G711_DEC (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
gboolean
|
|
gst_rtpg711dec_plugin_init (GstPlugin * plugin)
|
|
{
|
|
return gst_element_register (plugin, "rtpg711dec",
|
|
GST_RANK_NONE, GST_TYPE_RTP_G711_DEC);
|
|
}
|