2 * Copyright (C) <2005> 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., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
24 #include <gst/rtp/gstrtpbuffer.h>
27 #include "gstrtpmp4vdepay.h"
29 GST_DEBUG_CATEGORY_STATIC (rtpmp4vdepay_debug);
30 #define GST_CAT_DEFAULT (rtpmp4vdepay_debug)
32 static GstStaticPadTemplate gst_rtp_mp4v_depay_src_template =
33 GST_STATIC_PAD_TEMPLATE ("src",
36 GST_STATIC_CAPS ("video/mpeg,"
37 "mpegversion=(int) 4," "systemstream=(boolean)false")
40 static GstStaticPadTemplate gst_rtp_mp4v_depay_sink_template =
41 GST_STATIC_PAD_TEMPLATE ("sink",
44 GST_STATIC_CAPS ("application/x-rtp, "
45 "media = (string) \"video\", "
46 "clock-rate = (int) [1, MAX ], " "encoding-name = (string) \"MP4V-ES\""
47 /* All optional parameters
49 * "profile-level-id=[1,MAX]"
55 #define gst_rtp_mp4v_depay_parent_class parent_class
56 G_DEFINE_TYPE (GstRtpMP4VDepay, gst_rtp_mp4v_depay,
57 GST_TYPE_RTP_BASE_DEPAYLOAD);
59 static void gst_rtp_mp4v_depay_finalize (GObject * object);
61 static gboolean gst_rtp_mp4v_depay_setcaps (GstRTPBaseDepayload * depayload,
63 static GstBuffer *gst_rtp_mp4v_depay_process (GstRTPBaseDepayload * depayload,
66 static GstStateChangeReturn gst_rtp_mp4v_depay_change_state (GstElement *
67 element, GstStateChange transition);
70 gst_rtp_mp4v_depay_class_init (GstRtpMP4VDepayClass * klass)
72 GObjectClass *gobject_class;
73 GstElementClass *gstelement_class;
74 GstRTPBaseDepayloadClass *gstrtpbasedepayload_class;
76 gobject_class = (GObjectClass *) klass;
77 gstelement_class = (GstElementClass *) klass;
78 gstrtpbasedepayload_class = (GstRTPBaseDepayloadClass *) klass;
80 gobject_class->finalize = gst_rtp_mp4v_depay_finalize;
82 gstelement_class->change_state = gst_rtp_mp4v_depay_change_state;
84 gstrtpbasedepayload_class->process = gst_rtp_mp4v_depay_process;
85 gstrtpbasedepayload_class->set_caps = gst_rtp_mp4v_depay_setcaps;
87 gst_element_class_add_pad_template (gstelement_class,
88 gst_static_pad_template_get (&gst_rtp_mp4v_depay_src_template));
89 gst_element_class_add_pad_template (gstelement_class,
90 gst_static_pad_template_get (&gst_rtp_mp4v_depay_sink_template));
92 gst_element_class_set_static_metadata (gstelement_class,
93 "RTP MPEG4 video depayloader", "Codec/Depayloader/Network/RTP",
94 "Extracts MPEG4 video from RTP packets (RFC 3016)",
95 "Wim Taymans <wim.taymans@gmail.com>");
97 GST_DEBUG_CATEGORY_INIT (rtpmp4vdepay_debug, "rtpmp4vdepay", 0,
98 "MPEG4 video RTP Depayloader");
102 gst_rtp_mp4v_depay_init (GstRtpMP4VDepay * rtpmp4vdepay)
104 rtpmp4vdepay->adapter = gst_adapter_new ();
108 gst_rtp_mp4v_depay_finalize (GObject * object)
110 GstRtpMP4VDepay *rtpmp4vdepay;
112 rtpmp4vdepay = GST_RTP_MP4V_DEPAY (object);
114 g_object_unref (rtpmp4vdepay->adapter);
115 rtpmp4vdepay->adapter = NULL;
117 G_OBJECT_CLASS (parent_class)->finalize (object);
121 gst_rtp_mp4v_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
123 GstStructure *structure;
129 structure = gst_caps_get_structure (caps, 0);
131 if (!gst_structure_get_int (structure, "clock-rate", &clock_rate))
132 clock_rate = 90000; /* default */
133 depayload->clock_rate = clock_rate;
135 srccaps = gst_caps_new_simple ("video/mpeg",
136 "mpegversion", G_TYPE_INT, 4,
137 "systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
139 if ((str = gst_structure_get_string (structure, "config"))) {
142 g_value_init (&v, GST_TYPE_BUFFER);
143 if (gst_value_deserialize (&v, str)) {
146 buffer = gst_value_get_buffer (&v);
147 gst_caps_set_simple (srccaps,
148 "codec_data", GST_TYPE_BUFFER, buffer, NULL);
152 g_warning ("cannot convert config to buffer");
155 res = gst_pad_set_caps (depayload->srcpad, srccaps);
156 gst_caps_unref (srccaps);
162 gst_rtp_mp4v_depay_process (GstRTPBaseDepayload * depayload, GstBuffer * buf)
164 GstRtpMP4VDepay *rtpmp4vdepay;
165 GstBuffer *pbuf, *outbuf = NULL;
166 GstRTPBuffer rtp = { NULL };
169 rtpmp4vdepay = GST_RTP_MP4V_DEPAY (depayload);
171 /* flush remaining data on discont */
172 if (GST_BUFFER_IS_DISCONT (buf))
173 gst_adapter_clear (rtpmp4vdepay->adapter);
175 gst_rtp_buffer_map (buf, GST_MAP_READ, &rtp);
176 pbuf = gst_rtp_buffer_get_payload_buffer (&rtp);
177 marker = gst_rtp_buffer_get_marker (&rtp);
178 gst_rtp_buffer_unmap (&rtp);
180 gst_adapter_push (rtpmp4vdepay->adapter, pbuf);
182 /* if this was the last packet of the VOP, create and push a buffer */
186 avail = gst_adapter_available (rtpmp4vdepay->adapter);
187 outbuf = gst_adapter_take_buffer (rtpmp4vdepay->adapter, avail);
189 GST_DEBUG ("gst_rtp_mp4v_depay_chain: pushing buffer of size %"
190 G_GSIZE_FORMAT, gst_buffer_get_size (outbuf));
195 static GstStateChangeReturn
196 gst_rtp_mp4v_depay_change_state (GstElement * element,
197 GstStateChange transition)
199 GstRtpMP4VDepay *rtpmp4vdepay;
200 GstStateChangeReturn ret;
202 rtpmp4vdepay = GST_RTP_MP4V_DEPAY (element);
204 switch (transition) {
205 case GST_STATE_CHANGE_READY_TO_PAUSED:
206 gst_adapter_clear (rtpmp4vdepay->adapter);
212 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
214 switch (transition) {
222 gst_rtp_mp4v_depay_plugin_init (GstPlugin * plugin)
224 return gst_element_register (plugin, "rtpmp4vdepay",
225 GST_RANK_SECONDARY, GST_TYPE_RTP_MP4V_DEPAY);