2012-05-28 15:24:54 +00:00
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/* packet-dmx-text.c
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* DMX Text packet disassembly.
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*
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2012-05-28 15:29:36 +00:00
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* $Id$
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2012-05-28 15:24:54 +00:00
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*
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* This dissector is written by
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*
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* Erwin Rol <erwin@erwinrol.com>
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* Copyright 2011 Erwin Rol
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*
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* Wireshark - Network traffic analyzer
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* Gerald Combs <gerald@wireshark.org>
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* Copyright 1999 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor
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* Boston, MA 02110-1301, USA.
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*/
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/*
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* This dissector is based on;
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* American National Standard E1.11 - 2004
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* Entertainment Technology USITT DMX512-A
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* Asynchronous Serial Digital Data Transmission Standard
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* for Controlling Lighting Equipment and Accessories
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*/
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2012-09-20 02:03:38 +00:00
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#include "config.h"
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2012-05-28 15:24:54 +00:00
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#include <epan/packet.h>
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2013-03-16 16:25:41 +00:00
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void proto_register_dmx_text(void);
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2012-05-28 15:24:54 +00:00
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static int proto_dmx_text = -1;
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static int hf_dmx_text_page_nr = -1;
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static int hf_dmx_text_line_len = -1;
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static int hf_dmx_text_string = -1;
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static int ett_dmx_text = -1;
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static void
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dissect_dmx_text(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "DMX Text");
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col_clear(pinfo->cinfo, COL_INFO);
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if (tree != NULL) {
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2013-01-04 05:22:43 +00:00
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guint offset = 0;
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guint size;
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2012-05-28 15:24:54 +00:00
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proto_tree *ti = proto_tree_add_item(tree, proto_dmx_text, tvb,
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offset, -1, FALSE);
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proto_tree *dmx_text_tree = proto_item_add_subtree(ti, ett_dmx_text);
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proto_tree_add_item(dmx_text_tree, hf_dmx_text_page_nr, tvb,
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offset, 1, ENC_BIG_ENDIAN);
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offset++;
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proto_tree_add_item(dmx_text_tree, hf_dmx_text_line_len, tvb,
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offset, 1, ENC_BIG_ENDIAN);
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offset++;
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size = tvb_reported_length_remaining(tvb, offset);
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proto_tree_add_item(dmx_text_tree, hf_dmx_text_string, tvb,
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offset, size, ENC_BIG_ENDIAN);
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}
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}
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void
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proto_register_dmx_text(void)
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{
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static hf_register_info hf[] = {
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{ &hf_dmx_text_page_nr,
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{ "Page Number",
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"dmx_text.page_nr",
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FT_UINT8, BASE_DEC, NULL, 0x0,
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NULL, HFILL }},
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{ &hf_dmx_text_line_len,
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{ "Line Length",
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"dmx_text.line_length",
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FT_UINT8, BASE_DEC, NULL, 0x0,
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NULL, HFILL }},
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{ &hf_dmx_text_string,
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{ "Text String",
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"dmx_text.string",
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FT_STRING, BASE_NONE, NULL, 0x0,
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NULL, HFILL }},
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};
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static gint *ett[] = {
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&ett_dmx_text
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};
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proto_dmx_text = proto_register_protocol("DMX Text Frame", "DMX Text Frame", "dmx-text");
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proto_register_field_array(proto_dmx_text, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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register_dissector("dmx-text", dissect_dmx_text, proto_dmx_text);
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}
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