| /* GStreamer |
| * 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 |
| * 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 <gst/rtp/gstrtpbuffer.h> |
| #include <gst/video/video.h> |
| |
| #include <string.h> |
| #include "gstrtpmp4vdepay.h" |
| #include "gstrtputils.h" |
| |
| GST_DEBUG_CATEGORY_STATIC (rtpmp4vdepay_debug); |
| #define GST_CAT_DEFAULT (rtpmp4vdepay_debug) |
| |
| static GstStaticPadTemplate gst_rtp_mp4v_depay_src_template = |
| GST_STATIC_PAD_TEMPLATE ("src", |
| GST_PAD_SRC, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS ("video/mpeg," |
| "mpegversion=(int) 4," "systemstream=(boolean)false") |
| ); |
| |
| static GstStaticPadTemplate gst_rtp_mp4v_depay_sink_template = |
| GST_STATIC_PAD_TEMPLATE ("sink", |
| GST_PAD_SINK, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS ("application/x-rtp, " |
| "media = (string) \"video\", " |
| "clock-rate = (int) [1, MAX ], " "encoding-name = (string) \"MP4V-ES\"" |
| /* All optional parameters |
| * |
| * "profile-level-id=[1,MAX]" |
| * "config=" |
| */ |
| ) |
| ); |
| |
| #define gst_rtp_mp4v_depay_parent_class parent_class |
| G_DEFINE_TYPE (GstRtpMP4VDepay, gst_rtp_mp4v_depay, |
| GST_TYPE_RTP_BASE_DEPAYLOAD); |
| |
| static void gst_rtp_mp4v_depay_finalize (GObject * object); |
| |
| static gboolean gst_rtp_mp4v_depay_setcaps (GstRTPBaseDepayload * depayload, |
| GstCaps * caps); |
| static GstBuffer *gst_rtp_mp4v_depay_process (GstRTPBaseDepayload * depayload, |
| GstRTPBuffer * rtp); |
| |
| static GstStateChangeReturn gst_rtp_mp4v_depay_change_state (GstElement * |
| element, GstStateChange transition); |
| |
| static void |
| gst_rtp_mp4v_depay_class_init (GstRtpMP4VDepayClass * klass) |
| { |
| GObjectClass *gobject_class; |
| GstElementClass *gstelement_class; |
| GstRTPBaseDepayloadClass *gstrtpbasedepayload_class; |
| |
| gobject_class = (GObjectClass *) klass; |
| gstelement_class = (GstElementClass *) klass; |
| gstrtpbasedepayload_class = (GstRTPBaseDepayloadClass *) klass; |
| |
| gobject_class->finalize = gst_rtp_mp4v_depay_finalize; |
| |
| gstelement_class->change_state = gst_rtp_mp4v_depay_change_state; |
| |
| gstrtpbasedepayload_class->process_rtp_packet = gst_rtp_mp4v_depay_process; |
| gstrtpbasedepayload_class->set_caps = gst_rtp_mp4v_depay_setcaps; |
| |
| gst_element_class_add_static_pad_template (gstelement_class, |
| &gst_rtp_mp4v_depay_src_template); |
| gst_element_class_add_static_pad_template (gstelement_class, |
| &gst_rtp_mp4v_depay_sink_template); |
| |
| gst_element_class_set_static_metadata (gstelement_class, |
| "RTP MPEG4 video depayloader", "Codec/Depayloader/Network/RTP", |
| "Extracts MPEG4 video from RTP packets (RFC 3016)", |
| "Wim Taymans <wim.taymans@gmail.com>"); |
| |
| GST_DEBUG_CATEGORY_INIT (rtpmp4vdepay_debug, "rtpmp4vdepay", 0, |
| "MPEG4 video RTP Depayloader"); |
| } |
| |
| static void |
| gst_rtp_mp4v_depay_init (GstRtpMP4VDepay * rtpmp4vdepay) |
| { |
| rtpmp4vdepay->adapter = gst_adapter_new (); |
| } |
| |
| static void |
| gst_rtp_mp4v_depay_finalize (GObject * object) |
| { |
| GstRtpMP4VDepay *rtpmp4vdepay; |
| |
| rtpmp4vdepay = GST_RTP_MP4V_DEPAY (object); |
| |
| g_object_unref (rtpmp4vdepay->adapter); |
| rtpmp4vdepay->adapter = NULL; |
| |
| G_OBJECT_CLASS (parent_class)->finalize (object); |
| } |
| |
| static gboolean |
| gst_rtp_mp4v_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps) |
| { |
| GstStructure *structure; |
| GstCaps *srccaps; |
| const gchar *str; |
| gint clock_rate; |
| gboolean res; |
| |
| structure = gst_caps_get_structure (caps, 0); |
| |
| if (!gst_structure_get_int (structure, "clock-rate", &clock_rate)) |
| clock_rate = 90000; /* default */ |
| depayload->clock_rate = clock_rate; |
| |
| srccaps = gst_caps_new_simple ("video/mpeg", |
| "mpegversion", G_TYPE_INT, 4, |
| "systemstream", G_TYPE_BOOLEAN, FALSE, NULL); |
| |
| if ((str = gst_structure_get_string (structure, "config"))) { |
| GValue v = { 0 }; |
| |
| g_value_init (&v, GST_TYPE_BUFFER); |
| if (gst_value_deserialize (&v, str)) { |
| GstBuffer *buffer; |
| |
| buffer = gst_value_get_buffer (&v); |
| gst_caps_set_simple (srccaps, |
| "codec_data", GST_TYPE_BUFFER, buffer, NULL); |
| /* caps takes ref */ |
| g_value_unset (&v); |
| } else { |
| g_warning ("cannot convert config to buffer"); |
| } |
| } |
| res = gst_pad_set_caps (depayload->srcpad, srccaps); |
| gst_caps_unref (srccaps); |
| |
| return res; |
| } |
| |
| static GstBuffer * |
| gst_rtp_mp4v_depay_process (GstRTPBaseDepayload * depayload, GstRTPBuffer * rtp) |
| { |
| GstRtpMP4VDepay *rtpmp4vdepay; |
| GstBuffer *pbuf, *outbuf = NULL; |
| gboolean marker; |
| |
| rtpmp4vdepay = GST_RTP_MP4V_DEPAY (depayload); |
| |
| /* flush remaining data on discont */ |
| if (GST_BUFFER_IS_DISCONT (rtp->buffer)) |
| gst_adapter_clear (rtpmp4vdepay->adapter); |
| |
| pbuf = gst_rtp_buffer_get_payload_buffer (rtp); |
| marker = gst_rtp_buffer_get_marker (rtp); |
| |
| gst_adapter_push (rtpmp4vdepay->adapter, pbuf); |
| |
| /* if this was the last packet of the VOP, create and push a buffer */ |
| if (marker) { |
| guint avail; |
| |
| avail = gst_adapter_available (rtpmp4vdepay->adapter); |
| outbuf = gst_adapter_take_buffer (rtpmp4vdepay->adapter, avail); |
| |
| GST_DEBUG ("gst_rtp_mp4v_depay_chain: pushing buffer of size %" |
| G_GSIZE_FORMAT, gst_buffer_get_size (outbuf)); |
| gst_rtp_drop_non_video_meta (rtpmp4vdepay, outbuf); |
| } |
| |
| return outbuf; |
| } |
| |
| static GstStateChangeReturn |
| gst_rtp_mp4v_depay_change_state (GstElement * element, |
| GstStateChange transition) |
| { |
| GstRtpMP4VDepay *rtpmp4vdepay; |
| GstStateChangeReturn ret; |
| |
| rtpmp4vdepay = GST_RTP_MP4V_DEPAY (element); |
| |
| switch (transition) { |
| case GST_STATE_CHANGE_READY_TO_PAUSED: |
| gst_adapter_clear (rtpmp4vdepay->adapter); |
| break; |
| default: |
| break; |
| } |
| |
| ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); |
| |
| switch (transition) { |
| default: |
| break; |
| } |
| return ret; |
| } |
| |
| gboolean |
| gst_rtp_mp4v_depay_plugin_init (GstPlugin * plugin) |
| { |
| return gst_element_register (plugin, "rtpmp4vdepay", |
| GST_RANK_SECONDARY, GST_TYPE_RTP_MP4V_DEPAY); |
| } |