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authorWim Taymans <wim.taymans@collabora.co.uk>2009-05-08 11:35:02 +0200
committerWim Taymans <wim.taymans@collabora.co.uk>2009-05-08 11:35:02 +0200
commita9e496d92fe0ce64e91f974a78a87d4ef4357b3c (patch)
tree55f1a0d6566c529e507acabeb03af6b6026152db
parent5ec808cf7e4614e6507a2780b32a57475506115a (diff)
rtj2kdepay: add basic JPEG 2000 depayloader
-rw-r--r--gst/rtp/Makefile.am2
-rw-r--r--gst/rtp/gstrtp.c4
-rw-r--r--gst/rtp/gstrtpj2kdepay.c289
-rw-r--r--gst/rtp/gstrtpj2kdepay.h62
4 files changed, 357 insertions, 0 deletions
diff --git a/gst/rtp/Makefile.am b/gst/rtp/Makefile.am
index cc0b473d6..c578fd402 100644
--- a/gst/rtp/Makefile.am
+++ b/gst/rtp/Makefile.am
@@ -32,6 +32,7 @@ libgstrtp_la_SOURCES = \
gstrtph263pay.c \
gstrtph264depay.c \
gstrtph264pay.c \
+ gstrtpj2kdepay.c \
gstrtpj2kpay.c \
gstrtpjpegdepay.c \
gstrtpjpegpay.c \
@@ -106,6 +107,7 @@ noinst_HEADERS = \
gstrtph263pay.h \
gstrtph264depay.h \
gstrtph264pay.h \
+ gstrtpj2kdepay.h \
gstrtpj2kpay.h \
gstrtpjpegdepay.h \
gstrtpjpegpay.h \
diff --git a/gst/rtp/gstrtp.c b/gst/rtp/gstrtp.c
index 2db0f7ef3..720625405 100644
--- a/gst/rtp/gstrtp.c
+++ b/gst/rtp/gstrtp.c
@@ -49,6 +49,7 @@
#include "gstrtph263pay.h"
#include "gstrtph264depay.h"
#include "gstrtph264pay.h"
+#include "gstrtpj2kdepay.h"
#include "gstrtpj2kpay.h"
#include "gstrtpjpegdepay.h"
#include "gstrtpjpegpay.h"
@@ -163,6 +164,9 @@ plugin_init (GstPlugin * plugin)
if (!gst_rtp_h264_pay_plugin_init (plugin))
return FALSE;
+ if (!gst_rtp_j2k_depay_plugin_init (plugin))
+ return FALSE;
+
if (!gst_rtp_j2k_pay_plugin_init (plugin))
return FALSE;
diff --git a/gst/rtp/gstrtpj2kdepay.c b/gst/rtp/gstrtpj2kdepay.c
new file mode 100644
index 000000000..0d467e419
--- /dev/null
+++ b/gst/rtp/gstrtpj2kdepay.c
@@ -0,0 +1,289 @@
+/* GStreamer
+ * Copyright (C) <2009> 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <gst/rtp/gstrtpbuffer.h>
+
+#include <string.h>
+#include "gstrtpj2kdepay.h"
+
+GST_DEBUG_CATEGORY_STATIC (rtpj2kdepay_debug);
+#define GST_CAT_DEFAULT (rtpj2kdepay_debug)
+
+/* elementfactory information */
+static const GstElementDetails gst_rtp_j2kdepay_details =
+GST_ELEMENT_DETAILS ("RTP JPEG 2000 depayloader",
+ "Codec/Depayloader/Network",
+ "Extracts JPEG 2000 video from RTP packets (RFC 5371)",
+ "Wim Taymans <wim.taymans@gmail.com>");
+
+static GstStaticPadTemplate gst_rtp_j2k_depay_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("image/x-jpc")
+ );
+
+static GstStaticPadTemplate gst_rtp_j2k_depay_sink_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("application/x-rtp, "
+ "media = (string) \"video\", "
+ "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
+ "clock-rate = (int) 90000, " "encoding-name = (string) \"JPEG2000\"")
+ );
+
+GST_BOILERPLATE (GstRtpJ2KDepay, gst_rtp_j2k_depay, GstBaseRTPDepayload,
+ GST_TYPE_BASE_RTP_DEPAYLOAD);
+
+static void gst_rtp_j2k_depay_finalize (GObject * object);
+
+static GstStateChangeReturn
+gst_rtp_j2k_depay_change_state (GstElement * element,
+ GstStateChange transition);
+
+static gboolean gst_rtp_j2k_depay_setcaps (GstBaseRTPDepayload * depayload,
+ GstCaps * caps);
+static GstBuffer *gst_rtp_j2k_depay_process (GstBaseRTPDepayload * depayload,
+ GstBuffer * buf);
+
+static void
+gst_rtp_j2k_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_j2k_depay_src_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_rtp_j2k_depay_sink_template));
+
+ gst_element_class_set_details (element_class, &gst_rtp_j2kdepay_details);
+}
+
+static void
+gst_rtp_j2k_depay_class_init (GstRtpJ2KDepayClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+ GstBaseRTPDepayloadClass *gstbasertpdepayload_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
+ gstbasertpdepayload_class = (GstBaseRTPDepayloadClass *) klass;
+
+ gobject_class->finalize = gst_rtp_j2k_depay_finalize;
+
+ gstelement_class->change_state = gst_rtp_j2k_depay_change_state;
+
+ gstbasertpdepayload_class->set_caps = gst_rtp_j2k_depay_setcaps;
+ gstbasertpdepayload_class->process = gst_rtp_j2k_depay_process;
+
+ GST_DEBUG_CATEGORY_INIT (rtpj2kdepay_debug, "rtpj2kdepay", 0,
+ "J2K Video RTP Depayloader");
+}
+
+static void
+gst_rtp_j2k_depay_init (GstRtpJ2KDepay * rtpj2kdepay,
+ GstRtpJ2KDepayClass * klass)
+{
+ rtpj2kdepay->adapter = gst_adapter_new ();
+}
+
+static void
+gst_rtp_j2k_depay_finalize (GObject * object)
+{
+ GstRtpJ2KDepay *rtpj2kdepay;
+
+ rtpj2kdepay = GST_RTP_J2K_DEPAY (object);
+
+ g_object_unref (rtpj2kdepay->adapter);
+ rtpj2kdepay->adapter = NULL;
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static gboolean
+gst_rtp_j2k_depay_setcaps (GstBaseRTPDepayload * depayload, GstCaps * caps)
+{
+ GstRtpJ2KDepay *rtpj2kdepay;
+ GstStructure *structure;
+ gint clock_rate;
+ GstCaps *outcaps;
+ gboolean res;
+
+ rtpj2kdepay = GST_RTP_J2K_DEPAY (depayload);
+
+ structure = gst_caps_get_structure (caps, 0);
+
+ if (!gst_structure_get_int (structure, "clock-rate", &clock_rate))
+ clock_rate = 90000;
+ depayload->clock_rate = clock_rate;
+
+ outcaps =
+ gst_caps_new_simple ("image/x-jpc", "framerate", GST_TYPE_FRACTION, 0, 1,
+ "fields", G_TYPE_INT, 1, "fourcc", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('s',
+ 'Y', 'U', 'V'), NULL);
+ res = gst_pad_set_caps (depayload->srcpad, outcaps);
+ gst_caps_unref (outcaps);
+
+ return res;
+}
+
+static GstBuffer *
+gst_rtp_j2k_depay_process (GstBaseRTPDepayload * depayload, GstBuffer * buf)
+{
+ GstRtpJ2KDepay *rtpj2kdepay;
+ GstBuffer *outbuf;
+ gint payload_len;
+ guint8 *payload;
+ guint frag_offset;
+
+ rtpj2kdepay = GST_RTP_J2K_DEPAY (depayload);
+
+ /* flush everything on discont for now */
+ if (GST_BUFFER_IS_DISCONT (buf)) {
+ GST_DEBUG_OBJECT (rtpj2kdepay, "DISCONT, flushing data");
+ gst_adapter_clear (rtpj2kdepay->adapter);
+ rtpj2kdepay->need_header = TRUE;
+ }
+
+ payload_len = gst_rtp_buffer_get_payload_len (buf);
+
+ if (payload_len < 8)
+ goto empty_packet;
+
+ payload = gst_rtp_buffer_get_payload (buf);
+
+ /*
+ * 0 1 2 3
+ * 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
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |tp |MHF|mh_id|T| priority | tile number |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |reserved | fragment offset |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+ frag_offset = (payload[5] << 16) | (payload[6] << 8) | payload[7];
+
+ GST_DEBUG_OBJECT (rtpj2kdepay, "frag %u", frag_offset);
+
+ if (rtpj2kdepay->need_header) {
+ if (frag_offset != 0)
+ goto waiting_header;
+
+ rtpj2kdepay->need_header = FALSE;
+ }
+
+ payload += 8;
+ payload_len -= 8;
+
+ /* take JPEG 2000 data, push in the adapter */
+ outbuf = gst_rtp_buffer_get_payload_subbuffer (buf, 8, -1);
+ gst_adapter_push (rtpj2kdepay->adapter, outbuf);
+ outbuf = NULL;
+
+ if (gst_rtp_buffer_get_marker (buf)) {
+ guint avail;
+ guint8 end[2];
+ guint8 *data;
+
+ /* last buffer take all data out of the adapter */
+ avail = gst_adapter_available (rtpj2kdepay->adapter);
+ GST_DEBUG_OBJECT (rtpj2kdepay, "marker set, last buffer");
+
+ /* take the last bytes of the JPEG 2000 data to see if there is an EOC
+ * marker */
+ gst_adapter_copy (rtpj2kdepay->adapter, end, avail - 2, 2);
+
+ if (end[0] != 0xff && end[1] != 0xd9) {
+ GST_DEBUG_OBJECT (rtpj2kdepay, "no EOC marker, adding one");
+
+ /* no EOI marker, add one */
+ outbuf = gst_buffer_new_and_alloc (2);
+ data = GST_BUFFER_DATA (outbuf);
+ data[0] = 0xff;
+ data[1] = 0xd9;
+
+ gst_adapter_push (rtpj2kdepay->adapter, outbuf);
+ avail += 2;
+ }
+ outbuf = gst_adapter_take_buffer (rtpj2kdepay->adapter, avail);
+
+ GST_DEBUG_OBJECT (rtpj2kdepay, "returning %u bytes", avail);
+ }
+
+ return outbuf;
+
+ /* ERRORS */
+empty_packet:
+ {
+ GST_ELEMENT_WARNING (rtpj2kdepay, STREAM, DECODE,
+ ("Empty Payload."), (NULL));
+ return NULL;
+ }
+waiting_header:
+ {
+ GST_DEBUG_OBJECT (rtpj2kdepay, "we are waiting for a header");
+ return NULL;
+ }
+}
+
+static GstStateChangeReturn
+gst_rtp_j2k_depay_change_state (GstElement * element, GstStateChange transition)
+{
+ GstRtpJ2KDepay *rtpj2kdepay;
+ GstStateChangeReturn ret;
+
+ rtpj2kdepay = GST_RTP_J2K_DEPAY (element);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_NULL_TO_READY:
+ break;
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ gst_adapter_clear (rtpj2kdepay->adapter);
+ rtpj2kdepay->need_header = TRUE;
+ break;
+ default:
+ break;
+ }
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ gst_adapter_clear (rtpj2kdepay->adapter);
+ break;
+ case GST_STATE_CHANGE_READY_TO_NULL:
+ break;
+ default:
+ break;
+ }
+ return ret;
+}
+
+gboolean
+gst_rtp_j2k_depay_plugin_init (GstPlugin * plugin)
+{
+ return gst_element_register (plugin, "rtpj2kdepay",
+ GST_RANK_MARGINAL, GST_TYPE_RTP_J2K_DEPAY);
+}
diff --git a/gst/rtp/gstrtpj2kdepay.h b/gst/rtp/gstrtpj2kdepay.h
new file mode 100644
index 000000000..c1c8a1796
--- /dev/null
+++ b/gst/rtp/gstrtpj2kdepay.h
@@ -0,0 +1,62 @@
+/* GStreamer
+ * Copyright (C) <2009> 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GST_RTP_J2K_DEPAY_H__
+#define __GST_RTP_J2K_DEPAY_H__
+
+#include <gst/gst.h>
+#include <gst/base/gstadapter.h>
+#include <gst/rtp/gstbasertpdepayload.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_RTP_J2K_DEPAY \
+ (gst_rtp_j2k_depay_get_type())
+#define GST_RTP_J2K_DEPAY(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_J2K_DEPAY,GstRtpJ2KDepay))
+#define GST_RTP_J2K_DEPAY_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_J2K_DEPAY,GstRtpJ2KDepayClass))
+#define GST_IS_RTP_J2K_DEPAY(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_J2K_DEPAY))
+#define GST_IS_RTP_J2K_DEPAY_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_J2K_DEPAY))
+
+typedef struct _GstRtpJ2KDepay GstRtpJ2KDepay;
+typedef struct _GstRtpJ2KDepayClass GstRtpJ2KDepayClass;
+
+struct _GstRtpJ2KDepay
+{
+ GstBaseRTPDepayload depayload;
+
+ GstAdapter *adapter;
+ gboolean need_header;
+
+ gint width, height;
+};
+
+struct _GstRtpJ2KDepayClass
+{
+ GstBaseRTPDepayloadClass parent_class;
+};
+
+gboolean gst_rtp_j2k_depay_plugin_init (GstPlugin * plugin);
+
+G_END_DECLS
+
+#endif /* __GST_RTP_J2K_DEPAY_H__ */