mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2025-01-26 17:18:15 +00:00
rtp: add BroadcomVoice depayloader
This commit is contained in:
Wim Taymans
parent
039d225a78
commit
8c3b03de26
4 changed files with 251 additions and 0 deletions
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@ -6,6 +6,7 @@ libgstrtp_la_SOURCES = \
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gstrtpchannels.c \
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gstrtpdepay.c \
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gstrtpac3depay.c \
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gstrtpbvdepay.c \
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gstrtpbvpay.c \
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gstrtpceltdepay.c \
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gstrtpceltpay.c \
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@ -86,6 +87,7 @@ noinst_HEADERS = \
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gstrtpL16depay.h \
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gstrtpL16pay.h \
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gstrtpac3depay.h \
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gstrtpbvdepay.h \
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gstrtpbvpay.h \
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gstrtpceltpay.h \
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gstrtpceltdepay.h \
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@ -23,6 +23,7 @@
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#include "gstrtpdepay.h"
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#include "gstrtpac3depay.h"
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#include "gstrtpbvdepay.h"
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#include "gstrtpbvpay.h"
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#include "gstrtpceltdepay.h"
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#include "gstrtpceltpay.h"
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@ -90,6 +91,9 @@ plugin_init (GstPlugin * plugin)
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if (!gst_rtp_ac3_depay_plugin_init (plugin))
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return FALSE;
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if (!gst_rtp_bv_depay_plugin_init (plugin))
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return FALSE;
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if (!gst_rtp_bv_pay_plugin_init (plugin))
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return FALSE;
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187
gst/rtp/gstrtpbvdepay.c
Normal file
187
gst/rtp/gstrtpbvdepay.c
Normal file
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@ -0,0 +1,187 @@
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/* GStreamer
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* Copyright (C) <2009> 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 <string.h>
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#include <stdlib.h>
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#include <gst/rtp/gstrtpbuffer.h>
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#include "gstrtpbvdepay.h"
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/* elementfactory information */
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static const GstElementDetails gst_rtp_bv_depay_details =
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GST_ELEMENT_DETAILS ("RTP BroadcomVoice depayloader",
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"Codec/Depayloader/Network",
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"Extracts BroadcomVoice audio from RTP packets (RFC 4298)",
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"Wim Taymans <wim.taymans@collabora.co.uk>");
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static GstStaticPadTemplate gst_rtp_bv_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) \"BV16\"; "
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"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) 16000, " "encoding-name = (string) \"BV32\"")
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);
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static GstStaticPadTemplate gst_rtp_bv_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/x-bv, " "mode = (int) { 16, 32 }")
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);
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static GstBuffer *gst_rtp_bv_depay_process (GstBaseRTPDepayload * depayload,
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GstBuffer * buf);
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static gboolean gst_rtp_bv_depay_setcaps (GstBaseRTPDepayload * depayload,
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GstCaps * caps);
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GST_BOILERPLATE (GstRTPBVDepay, gst_rtp_bv_depay, GstBaseRTPDepayload,
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GST_TYPE_BASE_RTP_DEPAYLOAD);
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static void
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gst_rtp_bv_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_bv_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_bv_depay_sink_template));
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gst_element_class_set_details (element_class, &gst_rtp_bv_depay_details);
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}
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static void
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gst_rtp_bv_depay_class_init (GstRTPBVDepayClass * klass)
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{
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GObjectClass *gobject_class;
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GstBaseRTPDepayloadClass *gstbasertpdepayload_class;
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gobject_class = (GObjectClass *) klass;
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gstbasertpdepayload_class = (GstBaseRTPDepayloadClass *) klass;
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gstbasertpdepayload_class->process = gst_rtp_bv_depay_process;
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gstbasertpdepayload_class->set_caps = gst_rtp_bv_depay_setcaps;
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}
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static void
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gst_rtp_bv_depay_init (GstRTPBVDepay * rtpbvdepay, GstRTPBVDepayClass * klass)
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{
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rtpbvdepay->mode = -1;
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}
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static gboolean
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gst_rtp_bv_depay_setcaps (GstBaseRTPDepayload * depayload, GstCaps * caps)
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{
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GstRTPBVDepay *rtpbvdepay = GST_RTP_BV_DEPAY (depayload);
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GstCaps *srccaps;
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GstStructure *structure;
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const gchar *mode_str = NULL;
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gint mode, clock_rate, expected_rate;
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gboolean ret;
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structure = gst_caps_get_structure (caps, 0);
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mode_str = gst_structure_get_string (structure, "encoding-name");
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if (!mode_str)
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goto no_mode;
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if (!strcmp (mode_str, "BV16")) {
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mode = 16;
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expected_rate = 8000;
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} else if (!strcmp (mode_str, "BV32")) {
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mode = 32;
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expected_rate = 16000;
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} else
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goto invalid_mode;
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if (!gst_structure_get_int (structure, "clock-rate", &clock_rate))
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clock_rate = expected_rate;
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else if (clock_rate != expected_rate)
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goto wrong_rate;
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depayload->clock_rate = clock_rate;
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rtpbvdepay->mode = mode;
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srccaps = gst_caps_new_simple ("audio/x-bv",
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"mode", G_TYPE_INT, rtpbvdepay->mode, NULL);
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ret = gst_pad_set_caps (GST_BASE_RTP_DEPAYLOAD_SRCPAD (depayload), srccaps);
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GST_DEBUG ("set caps on source: %" GST_PTR_FORMAT " (ret=%d)", srccaps, ret);
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gst_caps_unref (srccaps);
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return ret;
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/* ERRORS */
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no_mode:
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{
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GST_ERROR_OBJECT (rtpbvdepay, "did not receive an encoding-name");
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return FALSE;
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}
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invalid_mode:
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{
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GST_ERROR_OBJECT (rtpbvdepay,
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"invalid encoding-name, expected BV16 or BV32, got %s", mode_str);
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return FALSE;
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}
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wrong_rate:
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{
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GST_ERROR_OBJECT (rtpbvdepay, "invalid clock-rate, expected %d, got %d",
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expected_rate, 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_bv_depay_process (GstBaseRTPDepayload * depayload, GstBuffer * buf)
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{
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GstBuffer *outbuf;
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gboolean marker;
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marker = gst_rtp_buffer_get_marker (buf);
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GST_DEBUG ("process : got %d bytes, mark %d ts %u seqn %d",
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GST_BUFFER_SIZE (buf), marker,
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gst_rtp_buffer_get_timestamp (buf), gst_rtp_buffer_get_seq (buf));
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outbuf = gst_rtp_buffer_get_payload_buffer (buf);
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if (marker) {
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/* mark start of talkspurt with DISCONT */
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GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
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}
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return outbuf;
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}
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gboolean
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gst_rtp_bv_depay_plugin_init (GstPlugin * plugin)
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{
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return gst_element_register (plugin, "rtpbvdepay",
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GST_RANK_MARGINAL, GST_TYPE_RTP_BV_DEPAY);
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}
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58
gst/rtp/gstrtpbvdepay.h
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58
gst/rtp/gstrtpbvdepay.h
Normal file
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@ -0,0 +1,58 @@
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/* GStreamer
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* Copyright (C) <2009> 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_BV_DEPAY_H__
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#define __GST_RTP_BV_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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typedef struct _GstRTPBVDepay GstRTPBVDepay;
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typedef struct _GstRTPBVDepayClass GstRTPBVDepayClass;
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#define GST_TYPE_RTP_BV_DEPAY \
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(gst_rtp_bv_depay_get_type())
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#define GST_RTP_BV_DEPAY(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_BV_DEPAY,GstRTPBVDepay))
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#define GST_RTP_BV_DEPAY_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_BV_DEPAY,GstRTPBVDepayClass))
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#define GST_IS_RTP_BV_DEPAY(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_BV_DEPAY))
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#define GST_IS_RTP_BV_DEPAY_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_BV_DEPAY))
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struct _GstRTPBVDepay
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{
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GstBaseRTPDepayload depayload;
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gint mode;
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};
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struct _GstRTPBVDepayClass
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{
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GstBaseRTPDepayloadClass parent_class;
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};
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gboolean gst_rtp_bv_depay_plugin_init (GstPlugin * plugin);
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G_END_DECLS
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#endif /* __GST_RTP_BV_DEPAY_H__ */
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