mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-03 13:16:04 +00:00
rtj2kdepay: add basic JPEG 2000 depayloader
This commit is contained in:
Wim Taymans
parent
5ec808cf7e
commit
a9e496d92f
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@ -32,6 +32,7 @@ libgstrtp_la_SOURCES = \
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gstrtph263pay.c \
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gstrtph264depay.c \
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gstrtph264pay.c \
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gstrtpj2kdepay.c \
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gstrtpj2kpay.c \
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gstrtpjpegdepay.c \
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gstrtpjpegpay.c \
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@ -106,6 +107,7 @@ noinst_HEADERS = \
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gstrtph263pay.h \
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gstrtph264depay.h \
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gstrtph264pay.h \
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gstrtpj2kdepay.h \
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gstrtpj2kpay.h \
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gstrtpjpegdepay.h \
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gstrtpjpegpay.h \
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@ -49,6 +49,7 @@
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#include "gstrtph263pay.h"
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#include "gstrtph264depay.h"
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#include "gstrtph264pay.h"
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#include "gstrtpj2kdepay.h"
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#include "gstrtpj2kpay.h"
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#include "gstrtpjpegdepay.h"
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#include "gstrtpjpegpay.h"
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@ -163,6 +164,9 @@ plugin_init (GstPlugin * plugin)
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if (!gst_rtp_h264_pay_plugin_init (plugin))
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return FALSE;
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if (!gst_rtp_j2k_depay_plugin_init (plugin))
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return FALSE;
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if (!gst_rtp_j2k_pay_plugin_init (plugin))
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return FALSE;
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289
gst/rtp/gstrtpj2kdepay.c
Normal file
289
gst/rtp/gstrtpj2kdepay.c
Normal file
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@ -0,0 +1,289 @@
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/* GStreamer
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* Copyright (C) <2009> 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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, 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 "gstrtpj2kdepay.h"
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GST_DEBUG_CATEGORY_STATIC (rtpj2kdepay_debug);
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#define GST_CAT_DEFAULT (rtpj2kdepay_debug)
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/* elementfactory information */
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static const GstElementDetails gst_rtp_j2kdepay_details =
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GST_ELEMENT_DETAILS ("RTP JPEG 2000 depayloader",
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"Codec/Depayloader/Network",
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"Extracts JPEG 2000 video from RTP packets (RFC 5371)",
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"Wim Taymans <wim.taymans@gmail.com>");
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static GstStaticPadTemplate gst_rtp_j2k_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 ("image/x-jpc")
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);
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static GstStaticPadTemplate gst_rtp_j2k_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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"payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
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"clock-rate = (int) 90000, " "encoding-name = (string) \"JPEG2000\"")
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);
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GST_BOILERPLATE (GstRtpJ2KDepay, gst_rtp_j2k_depay, GstBaseRTPDepayload,
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GST_TYPE_BASE_RTP_DEPAYLOAD);
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static void gst_rtp_j2k_depay_finalize (GObject * object);
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static GstStateChangeReturn
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gst_rtp_j2k_depay_change_state (GstElement * element,
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GstStateChange transition);
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static gboolean gst_rtp_j2k_depay_setcaps (GstBaseRTPDepayload * depayload,
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GstCaps * caps);
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static GstBuffer *gst_rtp_j2k_depay_process (GstBaseRTPDepayload * depayload,
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GstBuffer * buf);
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static void
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gst_rtp_j2k_depay_base_init (gpointer klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_rtp_j2k_depay_src_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_rtp_j2k_depay_sink_template));
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gst_element_class_set_details (element_class, &gst_rtp_j2kdepay_details);
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}
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static void
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gst_rtp_j2k_depay_class_init (GstRtpJ2KDepayClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstBaseRTPDepayloadClass *gstbasertpdepayload_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gstbasertpdepayload_class = (GstBaseRTPDepayloadClass *) klass;
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gobject_class->finalize = gst_rtp_j2k_depay_finalize;
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gstelement_class->change_state = gst_rtp_j2k_depay_change_state;
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gstbasertpdepayload_class->set_caps = gst_rtp_j2k_depay_setcaps;
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gstbasertpdepayload_class->process = gst_rtp_j2k_depay_process;
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GST_DEBUG_CATEGORY_INIT (rtpj2kdepay_debug, "rtpj2kdepay", 0,
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"J2K Video RTP Depayloader");
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}
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static void
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gst_rtp_j2k_depay_init (GstRtpJ2KDepay * rtpj2kdepay,
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GstRtpJ2KDepayClass * klass)
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{
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rtpj2kdepay->adapter = gst_adapter_new ();
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}
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static void
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gst_rtp_j2k_depay_finalize (GObject * object)
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{
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GstRtpJ2KDepay *rtpj2kdepay;
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rtpj2kdepay = GST_RTP_J2K_DEPAY (object);
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g_object_unref (rtpj2kdepay->adapter);
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rtpj2kdepay->adapter = NULL;
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gboolean
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gst_rtp_j2k_depay_setcaps (GstBaseRTPDepayload * depayload, GstCaps * caps)
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{
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GstRtpJ2KDepay *rtpj2kdepay;
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GstStructure *structure;
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gint clock_rate;
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GstCaps *outcaps;
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gboolean res;
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rtpj2kdepay = GST_RTP_J2K_DEPAY (depayload);
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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;
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depayload->clock_rate = clock_rate;
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outcaps =
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gst_caps_new_simple ("image/x-jpc", "framerate", GST_TYPE_FRACTION, 0, 1,
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"fields", G_TYPE_INT, 1, "fourcc", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('s',
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'Y', 'U', 'V'), NULL);
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res = gst_pad_set_caps (depayload->srcpad, outcaps);
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gst_caps_unref (outcaps);
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return res;
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}
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static GstBuffer *
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gst_rtp_j2k_depay_process (GstBaseRTPDepayload * depayload, GstBuffer * buf)
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{
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GstRtpJ2KDepay *rtpj2kdepay;
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GstBuffer *outbuf;
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gint payload_len;
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guint8 *payload;
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guint frag_offset;
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rtpj2kdepay = GST_RTP_J2K_DEPAY (depayload);
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/* flush everything on discont for now */
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if (GST_BUFFER_IS_DISCONT (buf)) {
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GST_DEBUG_OBJECT (rtpj2kdepay, "DISCONT, flushing data");
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gst_adapter_clear (rtpj2kdepay->adapter);
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rtpj2kdepay->need_header = TRUE;
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}
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payload_len = gst_rtp_buffer_get_payload_len (buf);
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if (payload_len < 8)
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goto empty_packet;
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payload = gst_rtp_buffer_get_payload (buf);
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/*
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* 0 1 2 3
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* |tp |MHF|mh_id|T| priority | tile number |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* |reserved | fragment offset |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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frag_offset = (payload[5] << 16) | (payload[6] << 8) | payload[7];
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GST_DEBUG_OBJECT (rtpj2kdepay, "frag %u", frag_offset);
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if (rtpj2kdepay->need_header) {
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if (frag_offset != 0)
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goto waiting_header;
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rtpj2kdepay->need_header = FALSE;
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}
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payload += 8;
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payload_len -= 8;
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/* take JPEG 2000 data, push in the adapter */
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outbuf = gst_rtp_buffer_get_payload_subbuffer (buf, 8, -1);
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gst_adapter_push (rtpj2kdepay->adapter, outbuf);
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outbuf = NULL;
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if (gst_rtp_buffer_get_marker (buf)) {
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guint avail;
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guint8 end[2];
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guint8 *data;
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/* last buffer take all data out of the adapter */
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avail = gst_adapter_available (rtpj2kdepay->adapter);
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GST_DEBUG_OBJECT (rtpj2kdepay, "marker set, last buffer");
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/* take the last bytes of the JPEG 2000 data to see if there is an EOC
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* marker */
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gst_adapter_copy (rtpj2kdepay->adapter, end, avail - 2, 2);
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if (end[0] != 0xff && end[1] != 0xd9) {
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GST_DEBUG_OBJECT (rtpj2kdepay, "no EOC marker, adding one");
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/* no EOI marker, add one */
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outbuf = gst_buffer_new_and_alloc (2);
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data = GST_BUFFER_DATA (outbuf);
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data[0] = 0xff;
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data[1] = 0xd9;
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gst_adapter_push (rtpj2kdepay->adapter, outbuf);
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avail += 2;
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}
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outbuf = gst_adapter_take_buffer (rtpj2kdepay->adapter, avail);
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GST_DEBUG_OBJECT (rtpj2kdepay, "returning %u bytes", avail);
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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 (rtpj2kdepay, STREAM, DECODE,
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("Empty Payload."), (NULL));
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return NULL;
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}
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waiting_header:
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{
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GST_DEBUG_OBJECT (rtpj2kdepay, "we are waiting for a header");
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return NULL;
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}
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}
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static GstStateChangeReturn
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gst_rtp_j2k_depay_change_state (GstElement * element, GstStateChange transition)
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{
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GstRtpJ2KDepay *rtpj2kdepay;
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GstStateChangeReturn ret;
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rtpj2kdepay = GST_RTP_J2K_DEPAY (element);
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switch (transition) {
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case GST_STATE_CHANGE_NULL_TO_READY:
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break;
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case GST_STATE_CHANGE_READY_TO_PAUSED:
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gst_adapter_clear (rtpj2kdepay->adapter);
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rtpj2kdepay->need_header = TRUE;
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break;
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default:
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break;
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}
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ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
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switch (transition) {
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case GST_STATE_CHANGE_PAUSED_TO_READY:
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gst_adapter_clear (rtpj2kdepay->adapter);
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break;
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case GST_STATE_CHANGE_READY_TO_NULL:
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break;
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default:
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break;
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}
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return ret;
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}
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gboolean
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gst_rtp_j2k_depay_plugin_init (GstPlugin * plugin)
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{
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return gst_element_register (plugin, "rtpj2kdepay",
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GST_RANK_MARGINAL, GST_TYPE_RTP_J2K_DEPAY);
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}
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62
gst/rtp/gstrtpj2kdepay.h
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62
gst/rtp/gstrtpj2kdepay.h
Normal file
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@ -0,0 +1,62 @@
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/* GStreamer
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* Copyright (C) <2009> 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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_RTP_J2K_DEPAY_H__
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#define __GST_RTP_J2K_DEPAY_H__
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#include <gst/gst.h>
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#include <gst/base/gstadapter.h>
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#include <gst/rtp/gstbasertpdepayload.h>
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G_BEGIN_DECLS
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#define GST_TYPE_RTP_J2K_DEPAY \
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(gst_rtp_j2k_depay_get_type())
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#define GST_RTP_J2K_DEPAY(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_J2K_DEPAY,GstRtpJ2KDepay))
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#define GST_RTP_J2K_DEPAY_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_J2K_DEPAY,GstRtpJ2KDepayClass))
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#define GST_IS_RTP_J2K_DEPAY(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_J2K_DEPAY))
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#define GST_IS_RTP_J2K_DEPAY_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_J2K_DEPAY))
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typedef struct _GstRtpJ2KDepay GstRtpJ2KDepay;
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typedef struct _GstRtpJ2KDepayClass GstRtpJ2KDepayClass;
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struct _GstRtpJ2KDepay
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{
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GstBaseRTPDepayload depayload;
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GstAdapter *adapter;
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gboolean need_header;
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gint width, height;
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};
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struct _GstRtpJ2KDepayClass
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{
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GstBaseRTPDepayloadClass parent_class;
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};
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gboolean gst_rtp_j2k_depay_plugin_init (GstPlugin * plugin);
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G_END_DECLS
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#endif /* __GST_RTP_J2K_DEPAY_H__ */
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