forked from osmocom/wireshark
671 lines
20 KiB
C
671 lines
20 KiB
C
/* packet-mp2t.c
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*
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* Routines for RFC 2250 MPEG2 (ISO/IEC 13818-1) Transport Stream dissection
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*
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* $Id$
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*
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* Copyright 2006, Erwin Rol <erwin@erwinrol.com>
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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
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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., 59 Temple Place - Suite 330, 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 <glib.h>
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#include <epan/packet.h>
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#include <stdio.h>
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#include <string.h>
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#include <epan/rtp_pt.h>
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/* The MPEG2 TS packet size */
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#define MP2T_PACKET_SIZE 188
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#define MP2T_SYNC_BYTE 0x47
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static dissector_handle_t pes_handle;
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static int proto_mp2t = -1;
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static gint ett_mp2t = -1;
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static gint ett_mp2t_header = -1;
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static gint ett_mp2t_af = -1;
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static int hf_mp2t_header = -1;
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static int hf_mp2t_sync_byte = -1;
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static int hf_mp2t_tei = -1;
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static int hf_mp2t_pusi = -1;
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static int hf_mp2t_tp = -1;
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static int hf_mp2t_pid = -1;
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static int hf_mp2t_tsc = -1;
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static int hf_mp2t_afc = -1;
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static int hf_mp2t_cc = -1;
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#define MP2T_SYNC_BYTE_MASK 0xFF000000
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#define MP2T_TEI_MASK 0x00800000
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#define MP2T_PUSI_MASK 0x00400000
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#define MP2T_TP_MASK 0x00200000
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#define MP2T_PID_MASK 0x001FFF00
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#define MP2T_TSC_MASK 0x000000C0
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#define MP2T_AFC_MASK 0x00000030
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#define MP2T_CC_MASK 0x0000000F
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#define MP2T_SYNC_BYTE_SHIFT 24
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#define MP2T_TEI_SHIFT 23
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#define MP2T_PUSI_SHIFT 22
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#define MP2T_TP_SHIFT 21
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#define MP2T_PID_SHIFT 8
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#define MP2T_TSC_SHIFT 6
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#define MP2T_AFC_SHIFT 4
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#define MP2T_CC_SHIFT 0
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static int hf_mp2t_af = -1;
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static int hf_mp2t_af_length = -1;
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static int hf_mp2t_af_di = -1;
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static int hf_mp2t_af_rai = -1;
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static int hf_mp2t_af_espi = -1;
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static int hf_mp2t_af_pcr_flag = -1;
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static int hf_mp2t_af_opcr_flag = -1;
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static int hf_mp2t_af_sp_flag = -1;
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static int hf_mp2t_af_tpd_flag = -1;
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static int hf_mp2t_af_afe_flag = -1;
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#define MP2T_AF_DI_MASK 0x80
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#define MP2T_AF_RAI_MASK 0x40
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#define MP2T_AF_ESPI_MASK 0x20
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#define MP2T_AF_PCR_MASK 0x10
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#define MP2T_AF_OPCR_MASK 0x08
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#define MP2T_AF_SP_MASK 0x04
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#define MP2T_AF_TPD_MASK 0x02
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#define MP2T_AF_AFE_MASK 0x01
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#define MP2T_AF_DI_SHIFT 7
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#define MP2T_AF_RAI_SHIFT 6
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#define MP2T_AF_ESPI_SHIFT 5
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#define MP2T_AF_PCR_SHIFT 4
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#define MP2T_AF_OPCR_SHIFT 3
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#define MP2T_AF_SP_SHIFT 2
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#define MP2T_AF_TPD_SHIFT 1
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#define MP2T_AF_AFE_SHIFT 0
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static int hf_mp2t_af_pcr = -1;
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static int hf_mp2t_af_opcr = -1;
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static int hf_mp2t_af_sc = -1;
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static int hf_mp2t_af_tpd_length = -1;
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static int hf_mp2t_af_tpd = -1;
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static int hf_mp2t_af_e_length = -1;
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static int hf_mp2t_af_e_ltw_flag = -1;
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static int hf_mp2t_af_e_pr_flag = -1;
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static int hf_mp2t_af_e_ss_flag = -1;
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static int hf_mp2t_af_e_reserved = -1;
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#define MP2T_AF_E_LTW_FLAG_MASK 0x80
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#define MP2T_AF_E_PR_FLAG_MASK 0x40
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#define MP2T_AF_E_SS_FLAG_MASK 0x20
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static int hf_mp2t_af_e_reserved_bytes = -1;
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static int hf_mp2t_af_stuffing_bytes = -1;
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static int hf_mp2t_af_e_ltwv_flag = -1;
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static int hf_mp2t_af_e_ltwo = -1;
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static int hf_mp2t_af_e_pr_reserved = -1;
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static int hf_mp2t_af_e_pr = -1;
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static int hf_mp2t_af_e_st = -1;
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static int hf_mp2t_af_e_dnau_32_30 = -1;
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static int hf_mp2t_af_e_m_1 = -1;
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static int hf_mp2t_af_e_dnau_29_15 = -1;
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static int hf_mp2t_af_e_m_2 = -1;
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static int hf_mp2t_af_e_dnau_14_0 = -1;
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static int hf_mp2t_af_e_m_3 = -1;
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static int hf_mp2t_payload = -1;
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static int hf_mp2t_malformed_payload = -1;
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static const value_string mp2t_sync_byte_vals[] = {
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{ MP2T_SYNC_BYTE, "Correct" },
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{ 0, NULL }
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};
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static const value_string mp2t_pid_vals[] = {
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{ 0x0000, "Program Association Table" },
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{ 0x0001, "Conditional Access Table" },
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{ 0x0002, "Transport Stream Description Table" },
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{ 0x0003, "Reserved" },
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{ 0x0004, "Reserved" },
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{ 0x0005, "Reserved" },
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{ 0x0006, "Reserved" },
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{ 0x0007, "Reserved" },
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{ 0x0008, "Reserved" },
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{ 0x0009, "Reserved" },
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{ 0x000A, "Reserved" },
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{ 0x000B, "Reserved" },
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{ 0x000C, "Reserved" },
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{ 0x000D, "Reserved" },
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{ 0x000E, "Reserved" },
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{ 0x000F, "Reserved" },
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{ 0x1FFF, "Null packet" },
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{ 0, NULL }
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};
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static const value_string mp2t_tsc_vals[] = {
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{ 0, "Not scrambled" },
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{ 1, "User-defined" },
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{ 2, "User-defined" },
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{ 3, "User-defined" },
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{ 0, NULL }
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};
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static const value_string mp2t_afc_vals[] = {
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{ 0, "Reserved" },
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{ 1, "Payload only" },
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{ 2, "Adaptation Field only" },
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{ 3, "Adaptation Field and Payload" },
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{ 0, NULL }
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};
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static gint
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dissect_tsp( tvbuff_t *tvb, gint offset, packet_info *pinfo, proto_tree *tree )
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{
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guint32 header;
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guint afc;
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gint start_offset = offset;
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gint payload_len;
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proto_item *ti = NULL;
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proto_item *hi = NULL;
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proto_tree *mp2t_tree = NULL;
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proto_tree *mp2t_header_tree = NULL;
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proto_tree *mp2t_af_tree = NULL;
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ti = proto_tree_add_item( tree, proto_mp2t, tvb, offset, MP2T_PACKET_SIZE, FALSE );
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mp2t_tree = proto_item_add_subtree( ti, ett_mp2t );
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header = tvb_get_ntohl(tvb, offset);
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proto_item_append_text(ti, " PID=0x%x CC=%d", (header & MP2T_PID_MASK) >> MP2T_PID_SHIFT, (header & MP2T_CC_MASK) >> MP2T_CC_SHIFT );
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hi = proto_tree_add_item( mp2t_tree, hf_mp2t_header, tvb, offset, 4, FALSE);
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mp2t_header_tree = proto_item_add_subtree( hi, ett_mp2t_header );
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proto_tree_add_item( mp2t_header_tree, hf_mp2t_sync_byte, tvb, offset, 4, FALSE);
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proto_tree_add_item( mp2t_header_tree, hf_mp2t_tei, tvb, offset, 4, FALSE);
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proto_tree_add_item( mp2t_header_tree, hf_mp2t_pusi, tvb, offset, 4, FALSE);
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proto_tree_add_item( mp2t_header_tree, hf_mp2t_tp, tvb, offset, 4, FALSE);
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proto_tree_add_item( mp2t_header_tree, hf_mp2t_pid, tvb, offset, 4, FALSE);
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proto_tree_add_item( mp2t_header_tree, hf_mp2t_tsc, tvb, offset, 4, FALSE);
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proto_tree_add_item( mp2t_header_tree, hf_mp2t_afc, tvb, offset, 4, FALSE);
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proto_tree_add_item( mp2t_header_tree, hf_mp2t_cc, tvb, offset, 4, FALSE);
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offset += 4;
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afc = (header & MP2T_AFC_MASK) >> MP2T_AFC_SHIFT;
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if (afc == 2 || afc == 3)
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{
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gint af_start_offset = offset;
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guint8 af_length;
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guint8 af_flags;
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gint stuffing_len;
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af_length = tvb_get_guint8(tvb, offset);
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proto_tree_add_item( mp2t_tree, hf_mp2t_af_length, tvb, offset, 1, FALSE);
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offset += 1;
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/* fix issues where afc==3 but af_length==0
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* Adaptaion field...spec section 2.4.3.5: The value 0 is for inserting a single
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* stuffing byte in a Transport Stream packet. When the adaptation_field_control
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* value is '11', the value of the adaptation_field_length shall be in the range 0 to 182.
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*/
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if (af_length > 0 ) {
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hi = proto_tree_add_item( mp2t_tree, hf_mp2t_af, tvb, offset, af_length, FALSE);
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mp2t_af_tree = proto_item_add_subtree( hi, ett_mp2t_af );
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af_flags = tvb_get_guint8(tvb, offset);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_di, tvb, offset, 1, FALSE);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_rai, tvb, offset, 1, FALSE);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_espi, tvb, offset, 1, FALSE);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_pcr_flag, tvb, offset, 1, FALSE);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_opcr_flag, tvb, offset, 1, FALSE);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_sp_flag, tvb, offset, 1, FALSE);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_tpd_flag, tvb, offset, 1, FALSE);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_afe_flag, tvb, offset, 1, FALSE);
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offset += 1;
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if (af_flags & MP2T_AF_PCR_MASK) {
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guint64 pcr_base = 0;
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guint32 pcr_ext = 0;
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guint8 tmp;
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tmp = tvb_get_guint8(tvb, offset);
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pcr_base = (pcr_base << 8) | tmp;
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offset += 1;
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tmp = tvb_get_guint8(tvb, offset);
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pcr_base = (pcr_base << 8) | tmp;
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offset += 1;
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tmp = tvb_get_guint8(tvb, offset);
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pcr_base = (pcr_base << 8) | tmp;
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offset += 1;
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tmp = tvb_get_guint8(tvb, offset);
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pcr_base = (pcr_base << 8) | tmp;
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offset += 1;
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tmp = tvb_get_guint8(tvb, offset);
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pcr_base = (pcr_base << 1) | ((tmp >> 7) & 0x01);
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pcr_ext = (tmp & 0x01);
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offset += 1;
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tmp = tvb_get_guint8(tvb, offset);
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pcr_ext = (pcr_ext << 8) | tmp;
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offset += 1;
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proto_tree_add_none_format(mp2t_af_tree, hf_mp2t_af_pcr, tvb, offset - 6, 6,
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"Program Clock Reference: base(%" G_GINT64_MODIFIER "u) * 300 + ext(%u) = %" G_GINT64_MODIFIER "u",
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pcr_base, pcr_ext, pcr_base * 300 + pcr_ext);
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}
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if (af_flags & MP2T_AF_OPCR_MASK) {
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guint64 opcr_base = 0;
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guint32 opcr_ext = 0;
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guint8 tmp = 0;
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tmp = tvb_get_guint8(tvb, offset);
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opcr_base = (opcr_base << 8) | tmp;
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offset += 1;
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tmp = tvb_get_guint8(tvb, offset);
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opcr_base = (opcr_base << 8) | tmp;
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offset += 1;
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tmp = tvb_get_guint8(tvb, offset);
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opcr_base = (opcr_base << 8) | tmp;
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offset += 1;
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tmp = tvb_get_guint8(tvb, offset);
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opcr_base = (opcr_base << 8) | tmp;
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offset += 1;
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tmp = tvb_get_guint8(tvb, offset);
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opcr_base = (opcr_base << 1) | ((tmp >> 7) & 0x01);
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opcr_ext = (tmp & 0x01);
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offset += 1;
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tmp = tvb_get_guint8(tvb, offset);
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opcr_ext = (opcr_ext << 8) | tmp;
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offset += 1;
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proto_tree_add_none_format(mp2t_af_tree, hf_mp2t_af_opcr, tvb, offset - 6, 6,
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"Original Program Clock Reference: base(%" G_GINT64_MODIFIER "u) * 300 + ext(%u) = %" G_GINT64_MODIFIER "u",
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opcr_base, opcr_ext, opcr_base * 300 + opcr_ext);
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offset += 6;
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}
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if (af_flags & MP2T_AF_SP_MASK) {
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_sc, tvb, offset, 1, FALSE);
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offset += 1;
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}
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if (af_flags & MP2T_AF_TPD_MASK) {
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guint8 tpd_len;
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tpd_len = tvb_get_guint8(tvb, offset);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_tpd_length, tvb, offset, 1, FALSE);
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offset += 1;
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_tpd, tvb, offset, tpd_len, FALSE);
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offset += tpd_len;
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}
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if (af_flags & MP2T_AF_AFE_MASK) {
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guint8 e_len;
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guint8 e_flags;
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gint e_start_offset = offset;
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gint reserved_len = 0;
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e_len = tvb_get_guint8(tvb, offset);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_e_length, tvb, offset, 1, FALSE);
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offset += 1;
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e_flags = tvb_get_guint8(tvb, offset);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_e_ltw_flag, tvb, offset, 1, FALSE);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_e_pr_flag, tvb, offset, 1, FALSE);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_e_ss_flag, tvb, offset, 1, FALSE);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_e_reserved, tvb, offset, 1, FALSE);
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offset += 1;
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if (e_flags & MP2T_AF_E_LTW_FLAG_MASK) {
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_e_ltwv_flag, tvb, offset, 2, FALSE);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_e_ltwo, tvb, offset, 2, FALSE);
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offset += 2;
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}
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if (e_flags & MP2T_AF_E_PR_FLAG_MASK) {
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_e_pr_reserved, tvb, offset, 3, FALSE);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_e_pr, tvb, offset, 3, FALSE);
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offset += 3;
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}
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if (e_flags & MP2T_AF_E_SS_FLAG_MASK) {
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_e_st, tvb, offset, 1, FALSE);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_e_dnau_32_30, tvb, offset, 1, FALSE);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_e_m_1, tvb, offset, 1, FALSE);
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offset += 1;
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_e_dnau_29_15, tvb, offset, 2, FALSE);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_e_m_2, tvb, offset, 2, FALSE);
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offset += 2;
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_e_dnau_14_0, tvb, offset, 2, FALSE);
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_e_m_3, tvb, offset, 2, FALSE);
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offset += 2;
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}
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reserved_len = (e_len + 1) - (offset - e_start_offset);
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if (reserved_len > 0) {
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_e_reserved_bytes, tvb, offset, reserved_len, FALSE);
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offset += reserved_len;
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}
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}
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stuffing_len = (af_length + 1) - (offset - af_start_offset);
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if (stuffing_len > 0) {
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proto_tree_add_item( mp2t_af_tree, hf_mp2t_af_stuffing_bytes, tvb, offset, stuffing_len, FALSE);
|
|
offset += stuffing_len;
|
|
}
|
|
}
|
|
}
|
|
|
|
payload_len = MP2T_PACKET_SIZE - (offset - start_offset);
|
|
if (payload_len > 0) {
|
|
if (afc == 2) { /* AF only */
|
|
/* Packet is malformed */
|
|
proto_tree_add_item( mp2t_tree, hf_mp2t_malformed_payload, tvb, offset, payload_len, FALSE);
|
|
offset += payload_len;
|
|
} else {
|
|
/* Check to make sure if we are not at end of payload, if we have less than 3 bytes, the tvb_get_ntoh24 fails. */
|
|
if (payload_len >=3 ) {
|
|
if (tvb_get_ntoh24(tvb, offset) == 0x000001) {
|
|
tvbuff_t *next_tvb = tvb_new_subset(tvb, offset, payload_len, payload_len);
|
|
call_dissector(pes_handle, next_tvb, pinfo, mp2t_tree);
|
|
} else {
|
|
proto_tree_add_item( mp2t_tree, hf_mp2t_payload, tvb, offset, payload_len, FALSE);
|
|
}
|
|
} else {
|
|
proto_tree_add_item( mp2t_tree, hf_mp2t_payload, tvb, offset, payload_len, FALSE);
|
|
}
|
|
offset += payload_len;
|
|
}
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_mp2t( tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree )
|
|
{
|
|
guint offset = 0;
|
|
|
|
while ( tvb_reported_length_remaining(tvb, offset) >= MP2T_PACKET_SIZE ) {
|
|
offset = dissect_tsp( tvb, offset, pinfo, tree);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
heur_dissect_mp2t( tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree )
|
|
{
|
|
guint offset = 0;
|
|
|
|
if (tvb_length_remaining(tvb, offset) % MP2T_PACKET_SIZE) {
|
|
return FALSE;
|
|
} else {
|
|
while (tvb_length_remaining(tvb, offset)) {
|
|
if (tvb_get_guint8(tvb, offset) != MP2T_SYNC_BYTE)
|
|
return FALSE;
|
|
offset += MP2T_PACKET_SIZE;
|
|
}
|
|
}
|
|
|
|
dissect_mp2t(tvb, pinfo, tree);
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
proto_register_mp2t(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_mp2t_header, {
|
|
"Header", "mp2t.header",
|
|
FT_UINT32, BASE_HEX, NULL, 0, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_sync_byte, {
|
|
"Sync Byte", "mp2t.sync_byte",
|
|
FT_UINT32, BASE_HEX, VALS(mp2t_sync_byte_vals), MP2T_SYNC_BYTE_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_tei, {
|
|
"Transport Error Indicator", "mp2t.tei",
|
|
FT_UINT32, BASE_DEC, NULL, MP2T_TEI_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_pusi, {
|
|
"Payload Unit Start Indicator", "mp2t.pusi",
|
|
FT_UINT32, BASE_DEC, NULL, MP2T_PUSI_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_tp, {
|
|
"Transport Priority", "mp2t.tp",
|
|
FT_UINT32, BASE_DEC, NULL, MP2T_TP_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_pid, {
|
|
"PID", "mp2t.pid",
|
|
FT_UINT32, BASE_HEX, VALS(mp2t_pid_vals), MP2T_PID_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_tsc, {
|
|
"Transport Scrambling Control", "mp2t.tsc",
|
|
FT_UINT32, BASE_HEX, VALS(mp2t_tsc_vals), MP2T_TSC_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_afc, {
|
|
"Adaption Field Control", "mp2t.afc",
|
|
FT_UINT32, BASE_HEX, VALS(mp2t_afc_vals) , MP2T_AFC_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_cc, {
|
|
"Continuity Counter", "mp2t.cc",
|
|
FT_UINT32, BASE_DEC, NULL, MP2T_CC_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af, {
|
|
"Adaption field", "mp2t.af",
|
|
FT_NONE, BASE_HEX, NULL, 0, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_length, {
|
|
"Adaptation Field Length", "mp2t.af.length",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_di, {
|
|
"Discontinuity Indicator", "mp2t.af.di",
|
|
FT_UINT8, BASE_DEC, NULL, MP2T_AF_DI_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_rai, {
|
|
"Random Access Indicator", "mp2t.af.rai",
|
|
FT_UINT8, BASE_DEC, NULL, MP2T_AF_RAI_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_espi, {
|
|
"Elementary Stream Priority Indicator", "mp2t.af.espi",
|
|
FT_UINT8, BASE_DEC, NULL, MP2T_AF_ESPI_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_pcr_flag, {
|
|
"PCR Flag", "mp2t.af.pcr_flag",
|
|
FT_UINT8, BASE_DEC, NULL, MP2T_AF_PCR_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_opcr_flag, {
|
|
"OPCR Flag", "mp2t.af.opcr_flag",
|
|
FT_UINT8, BASE_DEC, NULL, MP2T_AF_OPCR_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_sp_flag, {
|
|
"Splicing Point Flag", "mp2t.af.sp_flag",
|
|
FT_UINT8, BASE_DEC, NULL, MP2T_AF_SP_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_tpd_flag, {
|
|
"Transport Private Data Flag", "mp2t.af.tpd_flag",
|
|
FT_UINT8, BASE_DEC, NULL, MP2T_AF_TPD_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_afe_flag, {
|
|
"Adaptation Field Extension Flag", "mp2t.af.afe_flag",
|
|
FT_UINT8, BASE_DEC, NULL, MP2T_AF_AFE_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_pcr, {
|
|
"Program Clock Reference", "mp2t.af.pcr",
|
|
FT_NONE, BASE_DEC, NULL, 0, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_opcr, {
|
|
"Original Program Clock Reference", "mp2t.af.opcr",
|
|
FT_NONE, BASE_DEC, NULL, 0, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_sc, {
|
|
"Splice Countdown", "mp2t.af.sc",
|
|
FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_tpd_length, {
|
|
"Transport Private Data Length", "mp2t.af.tpd_length",
|
|
FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_tpd, {
|
|
"Transport Private Data", "mp2t.af.tpd",
|
|
FT_BYTES, BASE_DEC, NULL, 0, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_e_length, {
|
|
"Adaptation Field Extension Length", "mp2t.af.e_length",
|
|
FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_e_ltw_flag, {
|
|
"LTW Flag", "mp2t.af.e.ltw_flag",
|
|
FT_UINT8, BASE_DEC, NULL, MP2T_AF_E_LTW_FLAG_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_e_pr_flag, {
|
|
"Piecewise Rate Flag", "mp2t.af.e.pr_flag",
|
|
FT_UINT8, BASE_DEC, NULL, MP2T_AF_E_PR_FLAG_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_e_ss_flag, {
|
|
"Seamless Splice Flag", "mp2t.af.e.ss_flag",
|
|
FT_UINT8, BASE_DEC, NULL, MP2T_AF_E_SS_FLAG_MASK, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_e_reserved, {
|
|
"Reserved", "mp2t.af.e.reserved",
|
|
FT_UINT8, BASE_DEC, NULL, 0x1F, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_e_reserved_bytes, {
|
|
"Reserved", "mp2t.af.e.reserved_bytes",
|
|
FT_BYTES, BASE_DEC, NULL, 0x0, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_stuffing_bytes, {
|
|
"Stuffing", "mp2t.af.stuffing_bytes",
|
|
FT_BYTES, BASE_DEC, NULL, 0x0, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_e_ltwv_flag, {
|
|
"LTW Valid Flag", "mp2t.af.e.ltwv_flag",
|
|
FT_UINT16, BASE_DEC, NULL, 0x8000, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_e_ltwo, {
|
|
"LTW Offset", "mp2t.af.e.ltwo",
|
|
FT_UINT16, BASE_DEC, NULL, 0x7FFF, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_e_pr_reserved, {
|
|
"Reserved", "mp2t.af.e.pr_reserved",
|
|
FT_UINT24, BASE_DEC, NULL, 0xC00000, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_e_pr, {
|
|
"Piecewise Rate", "mp2t.af.e.pr",
|
|
FT_UINT24, BASE_DEC, NULL, 0x3FFFFF, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_e_st, {
|
|
"Splice Type", "mp2t.af.e.st",
|
|
FT_UINT8, BASE_DEC, NULL, 0xF0, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_e_dnau_32_30, {
|
|
"DTS Next AU[32...30]", "mp2t.af.e.dnau_32_30",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0E, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_e_m_1, {
|
|
"Marker Bit", "mp2t.af.e.m_1",
|
|
FT_UINT8, BASE_DEC, NULL, 0x01, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_e_dnau_29_15, {
|
|
"DTS Next AU[29...15]", "mp2t.af.e.dnau_29_15",
|
|
FT_UINT16, BASE_DEC, NULL, 0xFFFE, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_e_m_2, {
|
|
"Marker Bit", "mp2t.af.e.m_2",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0001, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_e_dnau_14_0, {
|
|
"DTS Next AU[14...0]", "mp2t.af.e.dnau_14_0",
|
|
FT_UINT16, BASE_DEC, NULL, 0xFFFE, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_af_e_m_3, {
|
|
"Marker Bit", "mp2t.af.e.m_3",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0001, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_payload, {
|
|
"Payload", "mp2t.payload",
|
|
FT_BYTES, BASE_DEC, NULL, 0x0, NULL, HFILL
|
|
} } ,
|
|
{ &hf_mp2t_malformed_payload, {
|
|
"Malformed Payload", "mp2t.malformed_payload",
|
|
FT_BYTES, BASE_DEC, NULL, 0x0, NULL, HFILL
|
|
} }
|
|
};
|
|
|
|
static gint *ett[] =
|
|
{
|
|
&ett_mp2t,
|
|
&ett_mp2t_header,
|
|
&ett_mp2t_af
|
|
};
|
|
|
|
proto_mp2t = proto_register_protocol("ISO/IEC 13818-1", "MP2T", "mp2t");
|
|
proto_register_field_array(proto_mp2t, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
|
|
|
|
void
|
|
proto_reg_handoff_mp2t(void)
|
|
{
|
|
dissector_handle_t mp2t_handle;
|
|
|
|
heur_dissector_add("udp", heur_dissect_mp2t, proto_mp2t);
|
|
|
|
mp2t_handle = create_dissector_handle(dissect_mp2t, proto_mp2t);
|
|
dissector_add("rtp.pt", PT_MP2T, mp2t_handle);
|
|
dissector_add_handle("udp.port", mp2t_handle); /* for decode-as */
|
|
|
|
pes_handle = find_dissector("mpeg-pes");
|
|
}
|
|
|