2012-03-16 12:25:06 +00:00
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/* packet-mpeg-pmt.c
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* Routines for MPEG2 (ISO/ISO 13818-1) Program Map Table (PMT) dissection
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* Copyright 2012, Guy Martin <gmsoft@tuxicoman.be>
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, 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 <glib.h>
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#include <epan/packet.h>
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#include <epan/dissectors/packet-mpeg-sect.h>
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#include "packet-mpeg-descriptor.h"
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static int proto_mpeg_pmt = -1;
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static int hf_mpeg_pmt_program_number = -1;
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static int hf_mpeg_pmt_reserved1 = -1;
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static int hf_mpeg_pmt_version_number = -1;
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static int hf_mpeg_pmt_current_next_indicator = -1;
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static int hf_mpeg_pmt_section_number = -1;
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static int hf_mpeg_pmt_last_section_number = -1;
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static int hf_mpeg_pmt_reserved2 = -1;
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static int hf_mpeg_pmt_pcr_pid = -1;
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static int hf_mpeg_pmt_reserved3 = -1;
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static int hf_mpeg_pmt_program_info_length = -1;
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static int hf_mpeg_pmt_stream_type = -1;
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static int hf_mpeg_pmt_stream_reserved1 = -1;
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static int hf_mpeg_pmt_stream_elementary_pid = -1;
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static int hf_mpeg_pmt_stream_reserved2 = -1;
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static int hf_mpeg_pmt_stream_es_info_length = -1;
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static gint ett_mpeg_pmt = -1;
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static gint ett_mpeg_pmt_stream = -1;
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#define MPEG_PMT_TID 0x02
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#define MPEG_PMT_RESERVED1_MASK 0xC0
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#define MPEG_PMT_VERSION_NUMBER_MASK 0x3E
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#define MPEG_PMT_CURRENT_NEXT_INDICATOR_MASK 0x01
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#define MPEG_PMT_RESERVED2_MASK 0xE000
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#define MPEG_PMT_PCR_PID_MASK 0x1FFF
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#define MPEG_PMT_RESERVED3_MASK 0xF000
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#define MPEG_PMT_PROGRAM_INFO_LENGTH_MASK 0x0FFF
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#define MPEG_PMT_STREAM_RESERVED1_MASK 0xE000
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#define MPEG_PMT_STREAM_ELEMENTARY_PID_MASK 0x1FFF
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#define MPEG_PMT_STREAM_RESERVED2_MASK 0xF000
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#define MPEG_PMT_STREAM_ES_INFO_LENGTH_MASK 0x0FFF
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static const value_string mpeg_pmt_cur_next_vals[] = {
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2012-03-16 13:30:12 +00:00
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2012-03-16 12:25:06 +00:00
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{ 0x0, "Not yet applicable" },
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{ 0x1, "Currently applicable" },
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{ 0x0, NULL }
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};
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static const value_string mpeg_pmt_stream_type_vals[] = {
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{ 0x00, "ITU-T | ISO/IEC Reserved" },
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{ 0x01, "ISO/IEC 11172 Video" },
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{ 0x02, "ITU-T Rec. H.262 | ISO/IEC 13818-2 Video or ISO/IEC 11172-2 constrained parameter video stream" },
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{ 0x03, "ISO/IEC 11172 Audio" },
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{ 0x04, "ISO/IEC 13818-3 Audio" },
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{ 0x05, "ITU-T Rec. H.222.0 | ISO/IEC 13818-1 private_sections" },
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{ 0x06, "ITU-T Rec. H.222.0 | ISO/IEC 13818-1 PES packets containing private data" },
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{ 0x07, "ISO/IEC 13522 MHEG" },
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{ 0x08, "ITU-T Rec. H.222.0 | ISO/IEC 13818-1 Annex A DSM-CC" },
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{ 0x09, "ITU-T Rec. H.222.1" },
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{ 0x0A, "ISO/IEC 13818-6 type A" },
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{ 0x0B, "ISO/IEC 13818-6 type B" },
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{ 0x0C, "ISO/IEC 13818-6 type C" },
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{ 0x0D, "ISO/IEC 13818-6 type D" },
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{ 0x0E, "ITU-T Rec. H.222.0 | ISO/IEC 13818-1 auxiliary" },
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{ 0x0F, "ISO/IEC 13818-7 Audio with ADTS transport syntax" },
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{ 0x10, "ISO/IEC 14496-2 Visual" },
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{ 0x11, "ISO/IEC 14496-3 Audio with the LATM transport syntax as defined in ISO/IEC 14496-3 / AMD 1" },
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{ 0x12, "ISO/IEC 14496-1 SL-packetized stream or FlexMux stream carried in PES packets" },
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{ 0x13, "ISO/IEC 14496-1 SL-packetized stream or FlexMux stream carried in ISO/IEC14496_sections" },
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{ 0x14, "ISO/IEC 13818-6 Synchronized Download Protocol" },
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{ 0x15, "Metadata carried in PES packets" },
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{ 0x16, "Metadata carried in metadata sections" },
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{ 0x17, "Metadata carried in ISO/IEC 13818-6 Data Carousel" },
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{ 0x18, "Metadata carried in ISO/IEC 13818-6 Object Carousel" },
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{ 0x19, "Metadata carried in ISO/IEC 13818-6 Synchronized Download Protocol" },
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{ 0x1A, "IPMP stream (defined in ISO/IEC 13818-11, MPEG-2 IPMP)" },
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{ 0x1B, "AVC video stream as defined in ITU-T Rec. H.264 | ISO/IEC 14496-10 Video" },
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{ 0x7F, "IPMP stream" },
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2012-03-22 08:49:00 +00:00
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{ 0xA1, "ETV-AM BIF Data Stream" },
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{ 0xC0, "ETV-AM EISS Signaling" },
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2012-03-16 13:30:12 +00:00
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{ 0x00, NULL }
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2012-03-16 12:25:06 +00:00
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};
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2012-07-25 20:42:16 +00:00
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static value_string_ext mpeg_pmt_stream_type_vals_ext = VALUE_STRING_EXT_INIT(mpeg_pmt_stream_type_vals);
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2012-03-16 12:25:06 +00:00
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2012-08-05 12:57:29 +00:00
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static int
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2012-03-16 12:25:06 +00:00
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dissect_mpeg_pmt(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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2012-07-25 20:42:16 +00:00
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guint offset = 0, length = 0;
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guint descriptor_end, prog_info_len, es_info_len;
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guint16 pid;
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2012-03-16 12:25:06 +00:00
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2012-09-03 21:25:07 +00:00
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proto_item *ti;
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proto_tree *mpeg_pmt_tree;
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2012-07-25 20:42:16 +00:00
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proto_item *si;
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proto_tree *mpeg_pmt_stream_tree;
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2012-03-16 12:25:06 +00:00
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/* The TVB should start right after the section_length in the Section packet */
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col_set_str(pinfo->cinfo, COL_INFO, "Program Map Table (PMT)");
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2012-09-03 21:25:07 +00:00
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ti = proto_tree_add_item(tree, proto_mpeg_pmt, tvb, offset, -1, ENC_NA);
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mpeg_pmt_tree = proto_item_add_subtree(ti, ett_mpeg_pmt);
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2012-03-16 12:25:06 +00:00
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offset += packet_mpeg_sect_header(tvb, offset, mpeg_pmt_tree, &length, NULL);
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length -= 4;
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proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_program_number, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_reserved1, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_version_number, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_current_next_indicator, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_section_number, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_last_section_number, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_reserved2, tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_pcr_pid, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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prog_info_len = tvb_get_ntohs(tvb, offset) & MPEG_PMT_PROGRAM_INFO_LENGTH_MASK;
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proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_reserved3, tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_program_info_length, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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descriptor_end = offset + prog_info_len;
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while (offset < descriptor_end)
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offset += proto_mpeg_descriptor_dissect(tvb, offset, mpeg_pmt_tree);
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2012-03-16 13:30:12 +00:00
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2012-03-16 12:25:06 +00:00
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while (offset < length) {
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2012-03-16 13:30:12 +00:00
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2012-03-16 12:25:06 +00:00
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pid = tvb_get_ntohs(tvb, offset + 1) & MPEG_PMT_STREAM_ELEMENTARY_PID_MASK;
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es_info_len = tvb_get_ntohs(tvb, offset + 3) & MPEG_PMT_STREAM_ES_INFO_LENGTH_MASK;
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2012-03-16 13:30:12 +00:00
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2012-03-16 12:25:06 +00:00
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si = proto_tree_add_text(mpeg_pmt_tree, tvb, offset, 5 + es_info_len, "Stream PID=0x%04hx", pid);
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mpeg_pmt_stream_tree = proto_item_add_subtree(si, ett_mpeg_pmt_stream);
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2012-07-25 20:42:16 +00:00
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proto_tree_add_item(mpeg_pmt_stream_tree, hf_mpeg_pmt_stream_type, tvb, offset, 1, ENC_BIG_ENDIAN);
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2012-03-16 12:25:06 +00:00
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offset++;
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2012-07-25 20:42:16 +00:00
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proto_tree_add_item(mpeg_pmt_stream_tree, hf_mpeg_pmt_stream_reserved1, tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(mpeg_pmt_stream_tree, hf_mpeg_pmt_stream_elementary_pid, tvb, offset, 2, ENC_BIG_ENDIAN);
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2012-03-16 12:25:06 +00:00
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offset += 2;
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2012-07-25 20:42:16 +00:00
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proto_tree_add_item(mpeg_pmt_stream_tree, hf_mpeg_pmt_stream_reserved2, tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(mpeg_pmt_stream_tree, hf_mpeg_pmt_stream_es_info_length, tvb, offset, 2, ENC_BIG_ENDIAN);
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2012-03-16 12:25:06 +00:00
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offset += 2;
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2012-03-16 13:30:12 +00:00
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2012-03-16 12:25:06 +00:00
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descriptor_end = offset + es_info_len;
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while (offset < descriptor_end)
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offset += proto_mpeg_descriptor_dissect(tvb, offset, mpeg_pmt_stream_tree);
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}
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2012-08-05 12:57:29 +00:00
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offset += packet_mpeg_sect_crc(tvb, pinfo, mpeg_pmt_tree, 0, offset);
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proto_item_set_len(ti, offset);
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return offset;
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2012-03-16 12:25:06 +00:00
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}
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void
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proto_register_mpeg_pmt(void)
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{
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static hf_register_info hf[] = {
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2012-03-16 13:30:12 +00:00
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2012-03-16 12:25:06 +00:00
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{ &hf_mpeg_pmt_program_number, {
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"Program Number", "mpeg_pmt.pg_num",
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FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL
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} },
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{ &hf_mpeg_pmt_reserved1, {
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"Reserved", "mpeg_pmt.reserved1",
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FT_UINT8, BASE_HEX, NULL, MPEG_PMT_RESERVED1_MASK, NULL, HFILL
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} },
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{ &hf_mpeg_pmt_version_number, {
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"Version Number", "mpeg_pmt.version",
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FT_UINT8, BASE_HEX, NULL, MPEG_PMT_VERSION_NUMBER_MASK, NULL, HFILL
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} },
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{ &hf_mpeg_pmt_current_next_indicator, {
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"Current/Next Indicator", "mpeg_pmt.cur_next_ind",
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FT_UINT8, BASE_HEX, VALS(mpeg_pmt_cur_next_vals), MPEG_PMT_CURRENT_NEXT_INDICATOR_MASK, NULL, HFILL
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} },
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{ &hf_mpeg_pmt_section_number, {
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"Section Number", "mpeg_pmt.sect_num",
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FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL
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} },
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2012-03-16 13:30:12 +00:00
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2012-03-16 12:25:06 +00:00
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{ &hf_mpeg_pmt_last_section_number, {
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"Last Section Number", "mpeg_pmt.last_sect_num",
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FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL
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} },
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{ &hf_mpeg_pmt_reserved2, {
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"Reserved", "mpeg_pmt.reserved2",
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FT_UINT16, BASE_HEX, NULL, MPEG_PMT_RESERVED2_MASK, NULL, HFILL
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} },
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{ &hf_mpeg_pmt_pcr_pid, {
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"PCR PID", "mpeg_pmt.pcr_pid",
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FT_UINT16, BASE_HEX, NULL, MPEG_PMT_PCR_PID_MASK, NULL, HFILL
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} },
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{ &hf_mpeg_pmt_reserved3, {
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"Reserved", "mpeg_pmt.reserved3",
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FT_UINT16, BASE_HEX, NULL, MPEG_PMT_RESERVED3_MASK, NULL, HFILL
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} },
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{ &hf_mpeg_pmt_program_info_length, {
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"Program Info Length", "mpeg_pmt.prog_info_len",
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FT_UINT16, BASE_HEX, NULL, MPEG_PMT_PROGRAM_INFO_LENGTH_MASK, NULL, HFILL
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} },
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{ &hf_mpeg_pmt_stream_type, {
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"Stream type", "mpeg_pmt.stream.type",
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2012-07-25 20:42:16 +00:00
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FT_UINT8, BASE_HEX | BASE_EXT_STRING, &mpeg_pmt_stream_type_vals_ext, 0, NULL, HFILL
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2012-03-16 12:25:06 +00:00
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} },
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{ &hf_mpeg_pmt_stream_reserved1, {
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"Reserved", "mpeg_pmt.stream.reserved1",
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FT_UINT16, BASE_HEX, NULL, MPEG_PMT_STREAM_RESERVED1_MASK, NULL, HFILL
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} },
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{ &hf_mpeg_pmt_stream_elementary_pid, {
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"Elementary PID", "mpeg_pmt.stream.elementary_pid",
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FT_UINT16, BASE_HEX, NULL, MPEG_PMT_STREAM_ELEMENTARY_PID_MASK, NULL, HFILL
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} },
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|
|
|
{ &hf_mpeg_pmt_stream_reserved2, {
|
|
|
|
"Reserved", "mpeg_pmt.stream.reserved2",
|
|
|
|
FT_UINT16, BASE_HEX, NULL, MPEG_PMT_STREAM_RESERVED2_MASK, NULL, HFILL
|
|
|
|
} },
|
|
|
|
|
|
|
|
{ &hf_mpeg_pmt_stream_es_info_length, {
|
|
|
|
"ES Info Length", "mpeg_pmt.stream.es_info_len",
|
|
|
|
FT_UINT16, BASE_HEX, NULL, MPEG_PMT_STREAM_ES_INFO_LENGTH_MASK, NULL, HFILL
|
|
|
|
} },
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
static gint *ett[] = {
|
|
|
|
&ett_mpeg_pmt,
|
|
|
|
&ett_mpeg_pmt_stream,
|
|
|
|
};
|
|
|
|
|
|
|
|
proto_mpeg_pmt = proto_register_protocol("MPEG2 Program Map Table", "MPEG PMT", "mpeg_pmt");
|
|
|
|
|
|
|
|
proto_register_field_array(proto_mpeg_pmt, hf, array_length(hf));
|
|
|
|
proto_register_subtree_array(ett, array_length(ett));
|
2012-03-16 13:30:12 +00:00
|
|
|
|
2012-08-05 12:57:29 +00:00
|
|
|
new_register_dissector("mpeg_pmt", dissect_mpeg_pmt, proto_mpeg_pmt);
|
2012-03-16 12:25:06 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
proto_reg_handoff_mpeg_pmt(void)
|
|
|
|
{
|
|
|
|
dissector_handle_t mpeg_pmt_handle;
|
|
|
|
|
2012-08-05 12:57:29 +00:00
|
|
|
mpeg_pmt_handle = new_create_dissector_handle(dissect_mpeg_pmt, proto_mpeg_pmt);
|
2012-03-16 12:25:06 +00:00
|
|
|
dissector_add_uint("mpeg_sect.tid", MPEG_PMT_TID, mpeg_pmt_handle);
|
|
|
|
}
|
2012-09-03 18:37:03 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
|
|
*
|
|
|
|
* Local variables:
|
|
|
|
* c-basic-offset: 4
|
|
|
|
* tab-width: 4
|
|
|
|
* indent-tabs-mode: t
|
|
|
|
* End:
|
|
|
|
*
|
|
|
|
* vi: set shiftwidth=4 tabstop=4 noexpandtab:
|
|
|
|
* :indentSize=4:tabSize=4:noTabs=false:
|
|
|
|
*/
|