/* GStreamer
- * Copyright (C) <2005> Wim Taymans <wim@fluendo.com>
+ * Copyright (C) <2005> Wim Taymans <wim.taymans@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
*
* 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., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include <string.h>
#include "gstrtpmp2tdepay.h"
-
-/* elementfactory information */
-static const GstElementDetails gst_rtp_mp2tdepay_details =
-GST_ELEMENT_DETAILS ("RTP packet depayloader",
- "Codec/Depayloader/Network",
- "Extracts MPEG2 TS from RTP packets (RFC 2250)",
- "Wim Taymans <wim@fluendo.com>\n"
- "Thijs Vermeir <thijs.vermeir@barco.com>");
+#include "gstrtputils.h"
/* RtpMP2TDepay signals and args */
enum
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-rtp, "
"media = (string) \"video\", "
- "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
- "clock-rate = (int) [1, MAX ], " "encoding-name = (string) \"MP2T-ES\";"
+ "clock-rate = (int) [1, MAX ], "
+ "encoding-name = (string) { MP2T, MP2T-ES } ;"
/* All optional parameters
*
* "profile-level-id=[1,MAX]"
"clock-rate = (int) [1, MAX ]")
);
-GST_BOILERPLATE (GstRtpMP2TDepay, gst_rtp_mp2t_depay, GstBaseRTPDepayload,
- GST_TYPE_BASE_RTP_DEPAYLOAD);
+G_DEFINE_TYPE (GstRtpMP2TDepay, gst_rtp_mp2t_depay,
+ GST_TYPE_RTP_BASE_DEPAYLOAD);
-static gboolean gst_rtp_mp2t_depay_setcaps (GstBaseRTPDepayload * depayload,
+static gboolean gst_rtp_mp2t_depay_setcaps (GstRTPBaseDepayload * depayload,
GstCaps * caps);
-static GstBuffer *gst_rtp_mp2t_depay_process (GstBaseRTPDepayload * depayload,
- GstBuffer * buf);
+static GstBuffer *gst_rtp_mp2t_depay_process (GstRTPBaseDepayload * depayload,
+ GstRTPBuffer * rtp);
static void gst_rtp_mp2t_depay_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_rtp_mp2t_depay_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
-static GstStateChangeReturn gst_rtp_mp2t_depay_change_state (GstElement *
- element, GstStateChange transition);
-
-
-static void
-gst_rtp_mp2t_depay_base_init (gpointer klass)
-{
- GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
-
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&gst_rtp_mp2t_depay_src_template));
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&gst_rtp_mp2t_depay_sink_template));
-
- gst_element_class_set_details (element_class, &gst_rtp_mp2tdepay_details);
-}
-
static void
gst_rtp_mp2t_depay_class_init (GstRtpMP2TDepayClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
- GstBaseRTPDepayloadClass *gstbasertpdepayload_class;
+ GstRTPBaseDepayloadClass *gstrtpbasedepayload_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
+ gstrtpbasedepayload_class = (GstRTPBaseDepayloadClass *) klass;
- gstbasertpdepayload_class = (GstBaseRTPDepayloadClass *) klass;
-
- parent_class = g_type_class_peek_parent (klass);
-
- gstbasertpdepayload_class->process = gst_rtp_mp2t_depay_process;
- gstbasertpdepayload_class->set_caps = gst_rtp_mp2t_depay_setcaps;
+ gstrtpbasedepayload_class->process_rtp_packet = gst_rtp_mp2t_depay_process;
+ gstrtpbasedepayload_class->set_caps = gst_rtp_mp2t_depay_setcaps;
gobject_class->set_property = gst_rtp_mp2t_depay_set_property;
gobject_class->get_property = gst_rtp_mp2t_depay_get_property;
+ gst_element_class_add_static_pad_template (gstelement_class,
+ &gst_rtp_mp2t_depay_src_template);
+ gst_element_class_add_static_pad_template (gstelement_class,
+ &gst_rtp_mp2t_depay_sink_template);
+
+ gst_element_class_set_static_metadata (gstelement_class,
+ "RTP MPEG Transport Stream depayloader", "Codec/Depayloader/Network/RTP",
+ "Extracts MPEG2 TS from RTP packets (RFC 2250)",
+ "Wim Taymans <wim.taymans@gmail.com>, "
+ "Thijs Vermeir <thijs.vermeir@barco.com>");
+
g_object_class_install_property (gobject_class, PROP_SKIP_FIRST_BYTES,
g_param_spec_uint ("skip-first-bytes",
"Skip first bytes",
"The amount of bytes that need to be skipped at the beginning of the payload",
- 0, G_MAXUINT, 0, G_PARAM_READWRITE));
+ 0, G_MAXUINT, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
- gstelement_class->change_state = gst_rtp_mp2t_depay_change_state;
}
static void
-gst_rtp_mp2t_depay_init (GstRtpMP2TDepay * depayload,
- GstRtpMP2TDepayClass * klass)
+gst_rtp_mp2t_depay_init (GstRtpMP2TDepay * rtpmp2tdepay)
{
- GstRtpMP2TDepay *rtpmp2tdepay;
-
- rtpmp2tdepay = GST_RTP_MP2T_DEPAY (depayload);
-
rtpmp2tdepay->skip_first_bytes = DEFAULT_SKIP_FIRST_BYTES;
}
static gboolean
-gst_rtp_mp2t_depay_setcaps (GstBaseRTPDepayload * depayload, GstCaps * caps)
+gst_rtp_mp2t_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
{
-
+ GstCaps *srccaps;
GstStructure *structure;
- GstRtpMP2TDepay *rtpmp2tdepay;
- gint clock_rate = 90000; /* default */
-
- rtpmp2tdepay = GST_RTP_MP2T_DEPAY (depayload);
+ gint clock_rate;
+ gboolean res;
structure = gst_caps_get_structure (caps, 0);
-
- if (gst_structure_has_field (structure, "clock-rate")) {
- gst_structure_get_int (structure, "clock-rate", &clock_rate);
- }
-
+ if (!gst_structure_get_int (structure, "clock-rate", &clock_rate))
+ clock_rate = 90000; /* default */
depayload->clock_rate = clock_rate;
- return TRUE;
+ srccaps = gst_caps_new_simple ("video/mpegts",
+ "packetsize", G_TYPE_INT, 188,
+ "systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
+ res = gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (depayload), srccaps);
+ gst_caps_unref (srccaps);
+
+ return res;
}
static GstBuffer *
-gst_rtp_mp2t_depay_process (GstBaseRTPDepayload * depayload, GstBuffer * buf)
+gst_rtp_mp2t_depay_process (GstRTPBaseDepayload * depayload, GstRTPBuffer * rtp)
{
GstRtpMP2TDepay *rtpmp2tdepay;
GstBuffer *outbuf;
- gint payload_len;
+ gint payload_len, leftover;
rtpmp2tdepay = GST_RTP_MP2T_DEPAY (depayload);
- if (G_UNLIKELY (!gst_rtp_buffer_validate (buf)))
- goto bad_packet;
-
- payload_len = gst_rtp_buffer_get_payload_len (buf);
+ payload_len = gst_rtp_buffer_get_payload_len (rtp);
if (G_UNLIKELY (payload_len <= rtpmp2tdepay->skip_first_bytes))
goto empty_packet;
+ payload_len -= rtpmp2tdepay->skip_first_bytes;
+
+ /* RFC 2250
+ *
+ * 2. Encapsulation of MPEG System and Transport Streams
+ *
+ * For MPEG2 Transport Streams the RTP payload will contain an integral
+ * number of MPEG transport packets.
+ */
+ leftover = payload_len % 188;
+ if (G_UNLIKELY (leftover)) {
+ GST_WARNING ("We don't have an integral number of buffers (leftover: %d)",
+ leftover);
+
+ payload_len -= leftover;
+ }
+
outbuf =
- gst_rtp_buffer_get_payload_subbuffer (buf, rtpmp2tdepay->skip_first_bytes,
- -1);
- gst_buffer_set_caps (outbuf, GST_PAD_CAPS (depayload->srcpad));
+ gst_rtp_buffer_get_payload_subbuffer (rtp,
+ rtpmp2tdepay->skip_first_bytes, payload_len);
- GST_DEBUG ("gst_rtp_mp2t_depay_chain: pushing buffer of size %d",
- GST_BUFFER_SIZE (outbuf));
+ if (outbuf) {
+ GST_DEBUG ("gst_rtp_mp2t_depay_chain: pushing buffer of size %"
+ G_GSIZE_FORMAT, gst_buffer_get_size (outbuf));
+
+ gst_rtp_drop_meta (GST_ELEMENT_CAST (depayload), outbuf, 0);
+ }
return outbuf;
/* ERRORS */
-bad_packet:
- {
- GST_ELEMENT_WARNING (rtpmp2tdepay, STREAM, DECODE,
- (NULL), ("Packet did not validate"));
- return NULL;
- }
empty_packet:
{
GST_ELEMENT_WARNING (rtpmp2tdepay, STREAM, DECODE,
}
}
-static GstStateChangeReturn
-gst_rtp_mp2t_depay_change_state (GstElement * element,
- GstStateChange transition)
-{
- GstRtpMP2TDepay *rtpmp2tdepay;
- GstStateChangeReturn ret;
-
- rtpmp2tdepay = GST_RTP_MP2T_DEPAY (element);
-
- switch (transition) {
- case GST_STATE_CHANGE_NULL_TO_READY:
- break;
- case GST_STATE_CHANGE_READY_TO_PAUSED:
- break;
- default:
- break;
- }
-
- ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
-
- switch (transition) {
- case GST_STATE_CHANGE_READY_TO_NULL:
- break;
- default:
- break;
- }
- return ret;
-}
-
gboolean
gst_rtp_mp2t_depay_plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "rtpmp2tdepay",
- GST_RANK_MARGINAL, GST_TYPE_RTP_MP2T_DEPAY);
+ GST_RANK_SECONDARY, GST_TYPE_RTP_MP2T_DEPAY);
}
projects / platform / upstream / gst-plugins-good.git / blobdiff