2 * Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
26 #include <gst/rtp/gstrtpbuffer.h>
28 #include "gstrtpmp2tpay.h"
30 static GstStaticPadTemplate gst_rtp_mp2t_pay_sink_template =
31 GST_STATIC_PAD_TEMPLATE ("sink",
34 GST_STATIC_CAPS ("video/mpegts,"
35 "packetsize=(int)188," "systemstream=(boolean)true")
38 static GstStaticPadTemplate gst_rtp_mp2t_pay_src_template =
39 GST_STATIC_PAD_TEMPLATE ("src",
42 GST_STATIC_CAPS ("application/x-rtp, "
43 "media = (string) \"video\", "
44 "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
45 "clock-rate = (int) 90000, " "encoding-name = (string) \"MP2T-ES\"")
48 static gboolean gst_rtp_mp2t_pay_setcaps (GstBaseRTPPayload * payload,
50 static GstFlowReturn gst_rtp_mp2t_pay_handle_buffer (GstBaseRTPPayload *
51 payload, GstBuffer * buffer);
52 static GstFlowReturn gst_rtp_mp2t_pay_flush (GstRTPMP2TPay * rtpmp2tpay);
53 static void gst_rtp_mp2t_pay_finalize (GObject * object);
55 GST_BOILERPLATE (GstRTPMP2TPay, gst_rtp_mp2t_pay, GstBaseRTPPayload,
56 GST_TYPE_BASE_RTP_PAYLOAD);
59 gst_rtp_mp2t_pay_base_init (gpointer klass)
61 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
63 gst_element_class_add_static_pad_template (element_class,
64 &gst_rtp_mp2t_pay_sink_template);
65 gst_element_class_add_static_pad_template (element_class,
66 &gst_rtp_mp2t_pay_src_template);
67 gst_element_class_set_details_simple (element_class,
68 "RTP MPEG2 Transport Stream payloader", "Codec/Payloader/Network/RTP",
69 "Payload-encodes MPEG2 TS into RTP packets (RFC 2250)",
70 "Wim Taymans <wim.taymans@gmail.com>");
74 gst_rtp_mp2t_pay_class_init (GstRTPMP2TPayClass * klass)
76 GObjectClass *gobject_class;
77 GstBaseRTPPayloadClass *gstbasertppayload_class;
79 gobject_class = (GObjectClass *) klass;
80 gstbasertppayload_class = (GstBaseRTPPayloadClass *) klass;
82 gobject_class->finalize = gst_rtp_mp2t_pay_finalize;
84 gstbasertppayload_class->set_caps = gst_rtp_mp2t_pay_setcaps;
85 gstbasertppayload_class->handle_buffer = gst_rtp_mp2t_pay_handle_buffer;
89 gst_rtp_mp2t_pay_init (GstRTPMP2TPay * rtpmp2tpay, GstRTPMP2TPayClass * klass)
91 GST_BASE_RTP_PAYLOAD (rtpmp2tpay)->clock_rate = 90000;
92 GST_BASE_RTP_PAYLOAD_PT (rtpmp2tpay) = GST_RTP_PAYLOAD_MP2T;
94 rtpmp2tpay->adapter = gst_adapter_new ();
98 gst_rtp_mp2t_pay_finalize (GObject * object)
100 GstRTPMP2TPay *rtpmp2tpay;
102 rtpmp2tpay = GST_RTP_MP2T_PAY (object);
104 g_object_unref (rtpmp2tpay->adapter);
105 rtpmp2tpay->adapter = NULL;
107 G_OBJECT_CLASS (parent_class)->finalize (object);
111 gst_rtp_mp2t_pay_setcaps (GstBaseRTPPayload * payload, GstCaps * caps)
115 gst_basertppayload_set_options (payload, "video", TRUE, "MP2T-ES", 90000);
116 res = gst_basertppayload_set_outcaps (payload, NULL);
122 gst_rtp_mp2t_pay_flush (GstRTPMP2TPay * rtpmp2tpay)
129 avail = gst_adapter_available (rtpmp2tpay->adapter);
130 outbuf = gst_rtp_buffer_new_allocate (avail, 0, 0);
133 payload = gst_rtp_buffer_get_payload (outbuf);
135 /* copy stuff from adapter to payload */
136 gst_adapter_copy (rtpmp2tpay->adapter, payload, 0, avail);
138 GST_BUFFER_TIMESTAMP (outbuf) = rtpmp2tpay->first_ts;
139 GST_BUFFER_DURATION (outbuf) = rtpmp2tpay->duration;
141 GST_DEBUG_OBJECT (rtpmp2tpay, "pushing buffer of size %d",
142 GST_BUFFER_SIZE (outbuf));
144 ret = gst_basertppayload_push (GST_BASE_RTP_PAYLOAD (rtpmp2tpay), outbuf);
146 /* flush the adapter content */
147 gst_adapter_flush (rtpmp2tpay->adapter, avail);
153 gst_rtp_mp2t_pay_handle_buffer (GstBaseRTPPayload * basepayload,
156 GstRTPMP2TPay *rtpmp2tpay;
157 guint size, avail, packet_len;
158 GstClockTime timestamp, duration;
161 rtpmp2tpay = GST_RTP_MP2T_PAY (basepayload);
163 size = GST_BUFFER_SIZE (buffer);
164 timestamp = GST_BUFFER_TIMESTAMP (buffer);
165 duration = GST_BUFFER_DURATION (buffer);
168 avail = gst_adapter_available (rtpmp2tpay->adapter);
170 /* Initialize new RTP payload */
172 rtpmp2tpay->first_ts = timestamp;
173 rtpmp2tpay->duration = duration;
176 /* get packet length of previous data and this new data,
177 * payload length includes a 4 byte header */
178 packet_len = gst_rtp_buffer_calc_packet_len (4 + avail + size, 0, 0);
180 /* if this buffer is going to overflow the packet, flush what we
182 if (gst_basertppayload_is_filled (basepayload,
183 packet_len, rtpmp2tpay->duration + duration)) {
184 ret = gst_rtp_mp2t_pay_flush (rtpmp2tpay);
185 rtpmp2tpay->first_ts = timestamp;
186 rtpmp2tpay->duration = duration;
188 /* keep filling the payload */
190 if (GST_CLOCK_TIME_IS_VALID (duration))
191 rtpmp2tpay->duration += duration;
194 /* copy buffer to adapter */
195 gst_adapter_push (rtpmp2tpay->adapter, buffer);
202 gst_rtp_mp2t_pay_plugin_init (GstPlugin * plugin)
204 return gst_element_register (plugin, "rtpmp2tpay",
205 GST_RANK_SECONDARY, GST_TYPE_RTP_MP2T_PAY);