| /* GStreamer |
| * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> |
| * Copyright (C) <2005> Edgard Lima <edgard.lima@gmail.com> |
| * 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., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| # include "config.h" |
| #endif |
| |
| #include <stdlib.h> |
| #include <string.h> |
| #include <gst/rtp/gstrtpbuffer.h> |
| |
| #include "gstrtppcmupay.h" |
| |
| static GstStaticPadTemplate gst_rtp_pcmu_pay_sink_template = |
| GST_STATIC_PAD_TEMPLATE ("sink", |
| GST_PAD_SINK, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS ("audio/x-mulaw, channels=(int)1, rate=(int)8000") |
| ); |
| |
| static GstStaticPadTemplate gst_rtp_pcmu_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_PCMU_STRING ", " |
| "clock-rate = (int) 8000, " "encoding-name = (string) \"PCMU\"; " |
| "application/x-rtp, " |
| "media = (string) \"audio\", " |
| "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", " |
| "clock-rate = (int) [1, MAX ], " "encoding-name = (string) \"PCMU\"") |
| ); |
| |
| static gboolean gst_rtp_pcmu_pay_setcaps (GstRTPBasePayload * payload, |
| GstCaps * caps); |
| |
| #define gst_rtp_pcmu_pay_parent_class parent_class |
| G_DEFINE_TYPE (GstRtpPcmuPay, gst_rtp_pcmu_pay, |
| GST_TYPE_RTP_BASE_AUDIO_PAYLOAD); |
| |
| static void |
| gst_rtp_pcmu_pay_class_init (GstRtpPcmuPayClass * klass) |
| { |
| GstElementClass *gstelement_class; |
| GstRTPBasePayloadClass *gstrtpbasepayload_class; |
| |
| gstelement_class = (GstElementClass *) klass; |
| gstrtpbasepayload_class = (GstRTPBasePayloadClass *) klass; |
| |
| gst_element_class_add_static_pad_template (gstelement_class, |
| &gst_rtp_pcmu_pay_sink_template); |
| gst_element_class_add_static_pad_template (gstelement_class, |
| &gst_rtp_pcmu_pay_src_template); |
| |
| gst_element_class_set_static_metadata (gstelement_class, "RTP PCMU payloader", |
| "Codec/Payloader/Network/RTP", |
| "Payload-encodes PCMU audio into a RTP packet", |
| "Edgard Lima <edgard.lima@gmail.com>"); |
| |
| gstrtpbasepayload_class->set_caps = gst_rtp_pcmu_pay_setcaps; |
| } |
| |
| static void |
| gst_rtp_pcmu_pay_init (GstRtpPcmuPay * rtppcmupay) |
| { |
| GstRTPBaseAudioPayload *rtpbaseaudiopayload; |
| |
| rtpbaseaudiopayload = GST_RTP_BASE_AUDIO_PAYLOAD (rtppcmupay); |
| |
| GST_RTP_BASE_PAYLOAD (rtppcmupay)->pt = GST_RTP_PAYLOAD_PCMU; |
| GST_RTP_BASE_PAYLOAD (rtppcmupay)->clock_rate = 8000; |
| |
| /* tell rtpbaseaudiopayload that this is a sample based codec */ |
| gst_rtp_base_audio_payload_set_sample_based (rtpbaseaudiopayload); |
| |
| /* octet-per-sample is 1 for PCM */ |
| gst_rtp_base_audio_payload_set_sample_options (rtpbaseaudiopayload, 1); |
| } |
| |
| static gboolean |
| gst_rtp_pcmu_pay_setcaps (GstRTPBasePayload * payload, GstCaps * caps) |
| { |
| gboolean res; |
| |
| gst_rtp_base_payload_set_options (payload, "audio", |
| payload->pt != GST_RTP_PAYLOAD_PCMU, "PCMU", 8000); |
| res = gst_rtp_base_payload_set_outcaps (payload, NULL); |
| |
| return res; |
| } |
| |
| gboolean |
| gst_rtp_pcmu_pay_plugin_init (GstPlugin * plugin) |
| { |
| return gst_element_register (plugin, "rtppcmupay", |
| GST_RANK_SECONDARY, GST_TYPE_RTP_PCMU_PAY); |
| } |