mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-28 03:00:35 +00:00
rtpg723depay: add G723 depayloader
This commit is contained in:
Wim Taymans
parent
ca7ecdf2f3
commit
b32ddfc174
4 changed files with 295 additions and 0 deletions
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@ -22,6 +22,7 @@ libgstrtp_la_SOURCES = \
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gstrtppcmudepay.c \
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gstrtppcmupay.c \
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gstrtppcmapay.c \
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gstrtpg723depay.c \
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gstrtpg723pay.c \
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gstrtpg726pay.c \
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gstrtpg726depay.c \
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@ -102,6 +103,7 @@ noinst_HEADERS = \
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gstrtppcmudepay.h \
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gstrtppcmupay.h \
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gstrtppcmapay.h \
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gstrtpg723depay.h \
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gstrtpg723pay.h \
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gstrtpg726depay.h \
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gstrtpg726pay.h \
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@ -35,6 +35,7 @@
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#include "gstrtppcmapay.h"
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#include "gstrtppcmadepay.h"
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#include "gstrtppcmudepay.h"
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#include "gstrtpg723depay.h"
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#include "gstrtpg723pay.h"
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#include "gstrtpg726depay.h"
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#include "gstrtpg726pay.h"
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@ -116,6 +117,9 @@ plugin_init (GstPlugin * plugin)
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if (!gst_rtp_ilbc_depay_plugin_init (plugin))
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return FALSE;
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if (!gst_rtp_g723_depay_plugin_init (plugin))
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return FALSE;
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if (!gst_rtp_g723_pay_plugin_init (plugin))
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return FALSE;
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232
gst/rtp/gstrtpg723depay.c
Normal file
232
gst/rtp/gstrtpg723depay.c
Normal file
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@ -0,0 +1,232 @@
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/* GStreamer
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*
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* Copyright (C) <2010> Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <gst/rtp/gstrtpbuffer.h>
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#include <stdlib.h>
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#include <string.h>
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#include "gstrtpg723depay.h"
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GST_DEBUG_CATEGORY_STATIC (rtpg723depay_debug);
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#define GST_CAT_DEFAULT (rtpg723depay_debug)
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/* references:
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*
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* RFC 3551 (4.5.3)
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*/
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/* elementfactory information */
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static const GstElementDetails gst_rtp_g723depay_details =
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GST_ELEMENT_DETAILS ("RTP G.723 depayloader",
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"Codec/Depayloader/Network",
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"Extracts G.723 audio from RTP packets (RFC 3551)",
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"Wim Taymans <wim.taymans@gmail.com>");
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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enum
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{
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ARG_0
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};
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/* input is an RTP packet
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*
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*/
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static GstStaticPadTemplate gst_rtp_g723_depay_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("application/x-rtp, "
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"media = (string) \"audio\", "
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"payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
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"clock-rate = (int) 8000, "
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"encoding-name = (string) \"G723\"; "
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"application/x-rtp, "
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"media = (string) \"audio\", "
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"payload = (int) " GST_RTP_PAYLOAD_G723_STRING ", "
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"clock-rate = (int) 8000")
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);
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static GstStaticPadTemplate gst_rtp_g723_depay_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/G723, " "channels = (int) 1," "rate = (int) 8000")
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);
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static gboolean gst_rtp_g723_depay_setcaps (GstBaseRTPDepayload * depayload,
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GstCaps * caps);
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static GstBuffer *gst_rtp_g723_depay_process (GstBaseRTPDepayload * depayload,
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GstBuffer * buf);
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GST_BOILERPLATE (GstRtpG723Depay, gst_rtp_g723_depay, GstBaseRTPDepayload,
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GST_TYPE_BASE_RTP_DEPAYLOAD);
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static void
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gst_rtp_g723_depay_base_init (gpointer klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_rtp_g723_depay_src_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_rtp_g723_depay_sink_template));
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gst_element_class_set_details (element_class, &gst_rtp_g723depay_details);
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GST_DEBUG_CATEGORY_INIT (rtpg723depay_debug, "rtpg723depay", 0,
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"G.723 RTP Depayloader");
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}
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static void
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gst_rtp_g723_depay_class_init (GstRtpG723DepayClass * klass)
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{
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GstBaseRTPDepayloadClass *gstbasertpdepayload_class;
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gstbasertpdepayload_class = (GstBaseRTPDepayloadClass *) klass;
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gstbasertpdepayload_class->process = gst_rtp_g723_depay_process;
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gstbasertpdepayload_class->set_caps = gst_rtp_g723_depay_setcaps;
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}
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static void
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gst_rtp_g723_depay_init (GstRtpG723Depay * rtpg723depay,
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GstRtpG723DepayClass * klass)
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{
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GstBaseRTPDepayload *depayload;
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depayload = GST_BASE_RTP_DEPAYLOAD (rtpg723depay);
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gst_pad_use_fixed_caps (GST_BASE_RTP_DEPAYLOAD_SRCPAD (depayload));
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}
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static gboolean
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gst_rtp_g723_depay_setcaps (GstBaseRTPDepayload * depayload, GstCaps * caps)
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{
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GstStructure *structure;
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GstCaps *srccaps;
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GstRtpG723Depay *rtpg723depay;
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const gchar *params;
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gint clock_rate, channels;
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gboolean ret;
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rtpg723depay = GST_RTP_G723_DEPAY (depayload);
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structure = gst_caps_get_structure (caps, 0);
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if (!(params = gst_structure_get_string (structure, "encoding-params")))
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channels = 1;
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else {
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channels = atoi (params);
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}
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if (!gst_structure_get_int (structure, "clock-rate", &clock_rate))
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clock_rate = 8000;
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if (channels != 1)
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goto wrong_channels;
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if (clock_rate != 8000)
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goto wrong_clock_rate;
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depayload->clock_rate = clock_rate;
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srccaps = gst_caps_new_simple ("audio/G723",
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"channels", G_TYPE_INT, channels, "rate", G_TYPE_INT, clock_rate, NULL);
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ret = gst_pad_set_caps (GST_BASE_RTP_DEPAYLOAD_SRCPAD (depayload), srccaps);
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gst_caps_unref (srccaps);
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return ret;
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/* ERRORS */
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wrong_channels:
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{
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GST_DEBUG_OBJECT (rtpg723depay, "expected 1 channel, got %d", channels);
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return FALSE;
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}
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wrong_clock_rate:
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{
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GST_DEBUG_OBJECT (rtpg723depay, "expected 8000 clock-rate, got %d",
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clock_rate);
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return FALSE;
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}
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}
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static GstBuffer *
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gst_rtp_g723_depay_process (GstBaseRTPDepayload * depayload, GstBuffer * buf)
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{
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GstRtpG723Depay *rtpg723depay;
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GstBuffer *outbuf = NULL;
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gint payload_len;
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gboolean marker;
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rtpg723depay = GST_RTP_G723_DEPAY (depayload);
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payload_len = gst_rtp_buffer_get_payload_len (buf);
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/* At least 4 bytes */
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if (payload_len < 4)
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goto too_small;
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GST_LOG_OBJECT (rtpg723depay, "payload len %d", payload_len);
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outbuf = gst_rtp_buffer_get_payload_buffer (buf);
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marker = gst_rtp_buffer_get_marker (buf);
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if (marker) {
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/* marker bit starts talkspurt */
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GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
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}
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GST_LOG_OBJECT (depayload, "pushing buffer of size %d",
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GST_BUFFER_SIZE (outbuf));
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return outbuf;
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/* ERRORS */
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too_small:
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{
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GST_ELEMENT_WARNING (rtpg723depay, STREAM, DECODE,
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(NULL), ("G723 RTP payload too small (%d)", payload_len));
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goto bad_packet;
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}
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bad_packet:
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{
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/* no fatal error */
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return NULL;
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}
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}
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gboolean
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gst_rtp_g723_depay_plugin_init (GstPlugin * plugin)
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{
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return gst_element_register (plugin, "rtpg723depay",
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GST_RANK_MARGINAL, GST_TYPE_RTP_G723_DEPAY);
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}
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57
gst/rtp/gstrtpg723depay.h
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57
gst/rtp/gstrtpg723depay.h
Normal file
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@ -0,0 +1,57 @@
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/* GStreamer
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*
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* Copyright (C) <2010> Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_RTP_G723_DEPAY_H__
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#define __GST_RTP_G723_DEPAY_H__
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#include <gst/gst.h>
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#include <gst/rtp/gstbasertpdepayload.h>
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G_BEGIN_DECLS
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#define GST_TYPE_RTP_G723_DEPAY \
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(gst_rtp_g723_depay_get_type())
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#define GST_RTP_G723_DEPAY(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_G723_DEPAY,GstRtpG723Depay))
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#define GST_RTP_G723_DEPAY_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_G723_DEPAY,GstRtpG723DepayClass))
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#define GST_IS_RTP_G723_DEPAY(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_G723_DEPAY))
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#define GST_IS_RTP_G723_DEPAY_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_G723_DEPAY))
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typedef struct _GstRtpG723Depay GstRtpG723Depay;
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typedef struct _GstRtpG723DepayClass GstRtpG723DepayClass;
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struct _GstRtpG723Depay
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{
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GstBaseRTPDepayload depayload;
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};
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struct _GstRtpG723DepayClass
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{
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GstBaseRTPDepayloadClass parent_class;
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};
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gboolean gst_rtp_g723_depay_plugin_init (GstPlugin * plugin);
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G_END_DECLS
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#endif /* __GST_RTP_G723_DEPAY_H__ */
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