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b1089fb520
The payloader didn't copy anything so far, the depayloader copied every possible meta. Let's make it consistent and just copy all metas without tags or with only the video tag. https://bugzilla.gnome.org/show_bug.cgi?id=751774
243 lines
7 KiB
C
243 lines
7 KiB
C
/* GStreamer
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* Copyright (C) <2005> 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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, 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 <gst/rtp/gstrtpbuffer.h>
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#include <string.h>
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#include "gstrtpmp2tdepay.h"
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#include "gstrtputils.h"
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/* RtpMP2TDepay signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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#define DEFAULT_SKIP_FIRST_BYTES 0
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enum
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{
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PROP_0,
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PROP_SKIP_FIRST_BYTES
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};
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static GstStaticPadTemplate gst_rtp_mp2t_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 ("video/mpegts,"
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"packetsize=(int)188," "systemstream=(boolean)true")
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);
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static GstStaticPadTemplate gst_rtp_mp2t_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) \"video\", "
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"clock-rate = (int) [1, MAX ], "
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"encoding-name = (string) { MP2T, MP2T-ES } ;"
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/* All optional parameters
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*
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* "profile-level-id=[1,MAX]"
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* "config="
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*/
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"application/x-rtp, "
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"media = (string) \"video\", "
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"payload = (int) " GST_RTP_PAYLOAD_MP2T_STRING ", "
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"clock-rate = (int) [1, MAX ]")
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);
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G_DEFINE_TYPE (GstRtpMP2TDepay, gst_rtp_mp2t_depay,
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GST_TYPE_RTP_BASE_DEPAYLOAD);
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static gboolean gst_rtp_mp2t_depay_setcaps (GstRTPBaseDepayload * depayload,
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GstCaps * caps);
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static GstBuffer *gst_rtp_mp2t_depay_process (GstRTPBaseDepayload * depayload,
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GstRTPBuffer * rtp);
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static void gst_rtp_mp2t_depay_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_rtp_mp2t_depay_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void
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gst_rtp_mp2t_depay_class_init (GstRtpMP2TDepayClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstRTPBaseDepayloadClass *gstrtpbasedepayload_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gstrtpbasedepayload_class = (GstRTPBaseDepayloadClass *) klass;
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gstrtpbasedepayload_class->process_rtp_packet = gst_rtp_mp2t_depay_process;
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gstrtpbasedepayload_class->set_caps = gst_rtp_mp2t_depay_setcaps;
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gobject_class->set_property = gst_rtp_mp2t_depay_set_property;
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gobject_class->get_property = gst_rtp_mp2t_depay_get_property;
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&gst_rtp_mp2t_depay_src_template));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&gst_rtp_mp2t_depay_sink_template));
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gst_element_class_set_static_metadata (gstelement_class,
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"RTP MPEG Transport Stream depayloader", "Codec/Depayloader/Network/RTP",
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"Extracts MPEG2 TS from RTP packets (RFC 2250)",
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"Wim Taymans <wim.taymans@gmail.com>, "
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"Thijs Vermeir <thijs.vermeir@barco.com>");
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g_object_class_install_property (gobject_class, PROP_SKIP_FIRST_BYTES,
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g_param_spec_uint ("skip-first-bytes",
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"Skip first bytes",
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"The amount of bytes that need to be skipped at the beginning of the payload",
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0, G_MAXUINT, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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}
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static void
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gst_rtp_mp2t_depay_init (GstRtpMP2TDepay * rtpmp2tdepay)
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{
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rtpmp2tdepay->skip_first_bytes = DEFAULT_SKIP_FIRST_BYTES;
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}
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static gboolean
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gst_rtp_mp2t_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
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{
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GstCaps *srccaps;
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GstStructure *structure;
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gint clock_rate;
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gboolean res;
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structure = gst_caps_get_structure (caps, 0);
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if (!gst_structure_get_int (structure, "clock-rate", &clock_rate))
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clock_rate = 90000; /* default */
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depayload->clock_rate = clock_rate;
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srccaps = gst_caps_new_simple ("video/mpegts",
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"packetsize", G_TYPE_INT, 188,
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"systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
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res = gst_pad_set_caps (GST_RTP_BASE_DEPAYLOAD_SRCPAD (depayload), srccaps);
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gst_caps_unref (srccaps);
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return res;
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}
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static GstBuffer *
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gst_rtp_mp2t_depay_process (GstRTPBaseDepayload * depayload, GstRTPBuffer * rtp)
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{
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GstRtpMP2TDepay *rtpmp2tdepay;
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GstBuffer *outbuf;
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gint payload_len, leftover;
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rtpmp2tdepay = GST_RTP_MP2T_DEPAY (depayload);
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payload_len = gst_rtp_buffer_get_payload_len (rtp);
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if (G_UNLIKELY (payload_len <= rtpmp2tdepay->skip_first_bytes))
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goto empty_packet;
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payload_len -= rtpmp2tdepay->skip_first_bytes;
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/* RFC 2250
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*
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* 2. Encapsulation of MPEG System and Transport Streams
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*
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* For MPEG2 Transport Streams the RTP payload will contain an integral
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* number of MPEG transport packets.
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*/
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leftover = payload_len % 188;
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if (G_UNLIKELY (leftover)) {
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GST_WARNING ("We don't have an integral number of buffers (leftover: %d)",
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leftover);
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payload_len -= leftover;
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}
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outbuf =
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gst_rtp_buffer_get_payload_subbuffer (rtp,
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rtpmp2tdepay->skip_first_bytes, payload_len);
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if (outbuf) {
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GST_DEBUG ("gst_rtp_mp2t_depay_chain: pushing buffer of size %"
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G_GSIZE_FORMAT, gst_buffer_get_size (outbuf));
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gst_rtp_drop_meta (GST_ELEMENT_CAST (depayload), outbuf, 0);
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}
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return outbuf;
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/* ERRORS */
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empty_packet:
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{
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GST_ELEMENT_WARNING (rtpmp2tdepay, STREAM, DECODE,
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(NULL), ("Packet was empty"));
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return NULL;
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}
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}
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static void
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gst_rtp_mp2t_depay_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstRtpMP2TDepay *rtpmp2tdepay;
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rtpmp2tdepay = GST_RTP_MP2T_DEPAY (object);
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switch (prop_id) {
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case PROP_SKIP_FIRST_BYTES:
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rtpmp2tdepay->skip_first_bytes = g_value_get_uint (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_rtp_mp2t_depay_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstRtpMP2TDepay *rtpmp2tdepay;
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rtpmp2tdepay = GST_RTP_MP2T_DEPAY (object);
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switch (prop_id) {
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case PROP_SKIP_FIRST_BYTES:
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g_value_set_uint (value, rtpmp2tdepay->skip_first_bytes);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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gboolean
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gst_rtp_mp2t_depay_plugin_init (GstPlugin * plugin)
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{
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return gst_element_register (plugin, "rtpmp2tdepay",
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GST_RANK_SECONDARY, GST_TYPE_RTP_MP2T_DEPAY);
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}
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