mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-27 02:30:35 +00:00
118 lines
3.8 KiB
C
118 lines
3.8 KiB
C
/* GStreamer
|
|
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
|
* Copyright (C) <2005> Edgard Lima <edgard.lima@indt.org.br>
|
|
* Copyright (C) <2005> Nokia Corporation <kai.vehmanen@nokia.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.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <gst/rtp/gstrtpbuffer.h>
|
|
|
|
#include "gstrtppcmapay.h"
|
|
|
|
static GstStaticPadTemplate gst_rtp_pcma_pay_sink_template =
|
|
GST_STATIC_PAD_TEMPLATE ("sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("audio/x-alaw, channels=(int)1, rate=(int)8000")
|
|
);
|
|
|
|
static GstStaticPadTemplate gst_rtp_pcma_pay_src_template =
|
|
GST_STATIC_PAD_TEMPLATE ("src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("application/x-rtp, "
|
|
"media = (string) \"audio\", "
|
|
"payload = (int) " GST_RTP_PAYLOAD_PCMA_STRING ", "
|
|
"clock-rate = (int) 8000, " "encoding-name = (string) \"PCMA\"; "
|
|
"application/x-rtp, "
|
|
"media = (string) \"audio\", "
|
|
"payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
|
|
"clock-rate = (int) 8000, " "encoding-name = (string) \"PCMA\"")
|
|
);
|
|
|
|
static gboolean gst_rtp_pcma_pay_setcaps (GstBaseRTPPayload * payload,
|
|
GstCaps * caps);
|
|
|
|
GST_BOILERPLATE (GstRtpPcmaPay, gst_rtp_pcma_pay, GstBaseRTPAudioPayload,
|
|
GST_TYPE_BASE_RTP_AUDIO_PAYLOAD);
|
|
|
|
static void
|
|
gst_rtp_pcma_pay_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_pcma_pay_sink_template));
|
|
gst_element_class_add_pad_template (element_class,
|
|
gst_static_pad_template_get (&gst_rtp_pcma_pay_src_template));
|
|
gst_element_class_set_details_simple (element_class, "RTP PCMA payloader",
|
|
"Codec/Payloader/Network/RTP",
|
|
"Payload-encodes PCMA audio into a RTP packet",
|
|
"Edgard Lima <edgard.lima@indt.org.br>");
|
|
}
|
|
|
|
static void
|
|
gst_rtp_pcma_pay_class_init (GstRtpPcmaPayClass * klass)
|
|
{
|
|
GstBaseRTPPayloadClass *gstbasertppayload_class;
|
|
|
|
gstbasertppayload_class = (GstBaseRTPPayloadClass *) klass;
|
|
|
|
gstbasertppayload_class->set_caps = gst_rtp_pcma_pay_setcaps;
|
|
}
|
|
|
|
static void
|
|
gst_rtp_pcma_pay_init (GstRtpPcmaPay * rtppcmapay, GstRtpPcmaPayClass * klass)
|
|
{
|
|
GstBaseRTPAudioPayload *basertpaudiopayload;
|
|
|
|
basertpaudiopayload = GST_BASE_RTP_AUDIO_PAYLOAD (rtppcmapay);
|
|
|
|
GST_BASE_RTP_PAYLOAD (rtppcmapay)->clock_rate = 8000;
|
|
|
|
/* tell basertpaudiopayload that this is a sample based codec */
|
|
gst_base_rtp_audio_payload_set_sample_based (basertpaudiopayload);
|
|
|
|
/* octet-per-sample is 1 for PCM */
|
|
gst_base_rtp_audio_payload_set_sample_options (basertpaudiopayload, 1);
|
|
}
|
|
|
|
static gboolean
|
|
gst_rtp_pcma_pay_setcaps (GstBaseRTPPayload * payload, GstCaps * caps)
|
|
{
|
|
gboolean res;
|
|
|
|
payload->pt = GST_RTP_PAYLOAD_PCMA;
|
|
|
|
gst_basertppayload_set_options (payload, "audio", FALSE, "PCMA", 8000);
|
|
res = gst_basertppayload_set_outcaps (payload, NULL);
|
|
|
|
return res;
|
|
}
|
|
|
|
gboolean
|
|
gst_rtp_pcma_pay_plugin_init (GstPlugin * plugin)
|
|
{
|
|
return gst_element_register (plugin, "rtppcmapay",
|
|
GST_RANK_SECONDARY, GST_TYPE_RTP_PCMA_PAY);
|
|
}
|