/* packet-mpeg-pmt.c * Routines for MPEG2 (ISO/ISO 13818-1) Program Map Table (PMT) dissection * Copyright 2012, Guy Martin * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "config.h" #include #include "packet-mpeg-sect.h" #include "packet-mpeg-descriptor.h" void proto_register_mpeg_pmt(void); void proto_reg_handoff_mpeg_pmt(void); static int proto_mpeg_pmt = -1; static int hf_mpeg_pmt_program_number = -1; static int hf_mpeg_pmt_reserved1 = -1; static int hf_mpeg_pmt_version_number = -1; static int hf_mpeg_pmt_current_next_indicator = -1; static int hf_mpeg_pmt_section_number = -1; static int hf_mpeg_pmt_last_section_number = -1; static int hf_mpeg_pmt_reserved2 = -1; static int hf_mpeg_pmt_pcr_pid = -1; static int hf_mpeg_pmt_reserved3 = -1; static int hf_mpeg_pmt_program_info_length = -1; static int hf_mpeg_pmt_stream_type = -1; static int hf_mpeg_pmt_stream_reserved1 = -1; static int hf_mpeg_pmt_stream_elementary_pid = -1; static int hf_mpeg_pmt_stream_reserved2 = -1; static int hf_mpeg_pmt_stream_es_info_length = -1; static gint ett_mpeg_pmt = -1; static gint ett_mpeg_pmt_stream = -1; static dissector_handle_t mpeg_pmt_handle; #define MPEG_PMT_RESERVED1_MASK 0xC0 #define MPEG_PMT_VERSION_NUMBER_MASK 0x3E #define MPEG_PMT_CURRENT_NEXT_INDICATOR_MASK 0x01 #define MPEG_PMT_RESERVED2_MASK 0xE000 #define MPEG_PMT_PCR_PID_MASK 0x1FFF #define MPEG_PMT_RESERVED3_MASK 0xF000 #define MPEG_PMT_PROGRAM_INFO_LENGTH_MASK 0x0FFF #define MPEG_PMT_STREAM_RESERVED1_MASK 0xE000 #define MPEG_PMT_STREAM_ELEMENTARY_PID_MASK 0x1FFF #define MPEG_PMT_STREAM_RESERVED2_MASK 0xF000 #define MPEG_PMT_STREAM_ES_INFO_LENGTH_MASK 0x0FFF static const value_string mpeg_pmt_cur_next_vals[] = { { 0x0, "Not yet applicable" }, { 0x1, "Currently applicable" }, { 0x0, NULL } }; static const value_string mpeg_pmt_stream_type_vals[] = { { 0x00, "ITU-T | ISO/IEC Reserved" }, { 0x01, "ISO/IEC 11172 Video" }, { 0x02, "ITU-T Rec. H.262 | ISO/IEC 13818-2 Video or ISO/IEC 11172-2 constrained parameter video stream" }, { 0x03, "ISO/IEC 11172 Audio" }, { 0x04, "ISO/IEC 13818-3 Audio" }, { 0x05, "ITU-T Rec. H.222.0 | ISO/IEC 13818-1 private_sections" }, { 0x06, "ITU-T Rec. H.222.0 | ISO/IEC 13818-1 PES packets containing private data" }, { 0x07, "ISO/IEC 13522 MHEG" }, { 0x08, "ITU-T Rec. H.222.0 | ISO/IEC 13818-1 Annex A DSM-CC" }, { 0x09, "ITU-T Rec. H.222.1" }, { 0x0A, "ISO/IEC 13818-6 type A" }, { 0x0B, "ISO/IEC 13818-6 type B" }, { 0x0C, "ISO/IEC 13818-6 type C" }, { 0x0D, "ISO/IEC 13818-6 type D" }, { 0x0E, "ITU-T Rec. H.222.0 | ISO/IEC 13818-1 auxiliary" }, { 0x0F, "ISO/IEC 13818-7 Audio with ADTS transport syntax" }, { 0x10, "ISO/IEC 14496-2 Visual" }, { 0x11, "ISO/IEC 14496-3 Audio with the LATM transport syntax as defined in ISO/IEC 14496-3 / AMD 1" }, { 0x12, "ISO/IEC 14496-1 SL-packetized stream or FlexMux stream carried in PES packets" }, { 0x13, "ISO/IEC 14496-1 SL-packetized stream or FlexMux stream carried in ISO/IEC14496_sections" }, { 0x14, "ISO/IEC 13818-6 Synchronized Download Protocol" }, { 0x15, "Metadata carried in PES packets" }, { 0x16, "Metadata carried in metadata sections" }, { 0x17, "Metadata carried in ISO/IEC 13818-6 Data Carousel" }, { 0x18, "Metadata carried in ISO/IEC 13818-6 Object Carousel" }, { 0x19, "Metadata carried in ISO/IEC 13818-6 Synchronized Download Protocol" }, { 0x1A, "IPMP stream (defined in ISO/IEC 13818-11, MPEG-2 IPMP)" }, { 0x1B, "AVC video stream as defined in ITU-T Rec. H.264 | ISO/IEC 14496-10 Video" }, { 0x24, "ITU-T Rec. H.265 and ISO/IEC 23008-2 (Ultra HD video) in a packetized stream" }, { 0x7F, "IPMP stream" }, { 0x81, "ATSC A/52 Audio" }, { 0x86, "SCTE-35 Splice Information" }, { 0xA1, "ETV-AM BIF Data Stream" }, { 0xC0, "ETV-AM EISS Signaling" }, { 0x00, NULL } }; value_string_ext mpeg_pmt_stream_type_vals_ext = VALUE_STRING_EXT_INIT(mpeg_pmt_stream_type_vals); static int dissect_mpeg_pmt(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { guint offset = 0, length = 0; guint prog_info_len, es_info_len; guint16 pid; proto_item *ti; proto_tree *mpeg_pmt_tree; proto_tree *mpeg_pmt_stream_tree; /* The TVB should start right after the section_length in the Section packet */ col_set_str(pinfo->cinfo, COL_INFO, "Program Map Table (PMT)"); ti = proto_tree_add_item(tree, proto_mpeg_pmt, tvb, offset, -1, ENC_NA); mpeg_pmt_tree = proto_item_add_subtree(ti, ett_mpeg_pmt); offset += packet_mpeg_sect_header(tvb, offset, mpeg_pmt_tree, &length, NULL); length -= 4; proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_program_number, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_reserved1, tvb, offset, 1, ENC_BIG_ENDIAN); proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_version_number, tvb, offset, 1, ENC_BIG_ENDIAN); proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_current_next_indicator, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_section_number, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_last_section_number, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_reserved2, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_pcr_pid, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; prog_info_len = tvb_get_ntohs(tvb, offset) & MPEG_PMT_PROGRAM_INFO_LENGTH_MASK; proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_reserved3, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(mpeg_pmt_tree, hf_mpeg_pmt_program_info_length, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; offset += proto_mpeg_descriptor_loop_dissect(tvb, offset, prog_info_len, mpeg_pmt_tree); while (offset < length) { pid = tvb_get_ntohs(tvb, offset + 1) & MPEG_PMT_STREAM_ELEMENTARY_PID_MASK; es_info_len = tvb_get_ntohs(tvb, offset + 3) & MPEG_PMT_STREAM_ES_INFO_LENGTH_MASK; mpeg_pmt_stream_tree = proto_tree_add_subtree_format(mpeg_pmt_tree, tvb, offset, 5 + es_info_len, ett_mpeg_pmt_stream, NULL, "Stream PID=0x%04hx", pid); proto_tree_add_item(mpeg_pmt_stream_tree, hf_mpeg_pmt_stream_type, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_tree_add_item(mpeg_pmt_stream_tree, hf_mpeg_pmt_stream_reserved1, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(mpeg_pmt_stream_tree, hf_mpeg_pmt_stream_elementary_pid, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(mpeg_pmt_stream_tree, hf_mpeg_pmt_stream_reserved2, tvb, offset, 2, ENC_BIG_ENDIAN); proto_tree_add_item(mpeg_pmt_stream_tree, hf_mpeg_pmt_stream_es_info_length, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; offset += proto_mpeg_descriptor_loop_dissect(tvb, offset, es_info_len, mpeg_pmt_stream_tree); } offset += packet_mpeg_sect_crc(tvb, pinfo, mpeg_pmt_tree, 0, offset); proto_item_set_len(ti, offset); return offset; } void proto_register_mpeg_pmt(void) { static hf_register_info hf[] = { { &hf_mpeg_pmt_program_number, { "Program Number", "mpeg_pmt.pg_num", FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL } }, { &hf_mpeg_pmt_reserved1, { "Reserved", "mpeg_pmt.reserved1", FT_UINT8, BASE_HEX, NULL, MPEG_PMT_RESERVED1_MASK, NULL, HFILL } }, { &hf_mpeg_pmt_version_number, { "Version Number", "mpeg_pmt.version", FT_UINT8, BASE_HEX, NULL, MPEG_PMT_VERSION_NUMBER_MASK, NULL, HFILL } }, { &hf_mpeg_pmt_current_next_indicator, { "Current/Next Indicator", "mpeg_pmt.cur_next_ind", FT_UINT8, BASE_HEX, VALS(mpeg_pmt_cur_next_vals), MPEG_PMT_CURRENT_NEXT_INDICATOR_MASK, NULL, HFILL } }, { &hf_mpeg_pmt_section_number, { "Section Number", "mpeg_pmt.sect_num", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } }, { &hf_mpeg_pmt_last_section_number, { "Last Section Number", "mpeg_pmt.last_sect_num", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } }, { &hf_mpeg_pmt_reserved2, { "Reserved", "mpeg_pmt.reserved2", FT_UINT16, BASE_HEX, NULL, MPEG_PMT_RESERVED2_MASK, NULL, HFILL } }, { &hf_mpeg_pmt_pcr_pid, { "PCR PID", "mpeg_pmt.pcr_pid", FT_UINT16, BASE_HEX, NULL, MPEG_PMT_PCR_PID_MASK, NULL, HFILL } }, { &hf_mpeg_pmt_reserved3, { "Reserved", "mpeg_pmt.reserved3", FT_UINT16, BASE_HEX, NULL, MPEG_PMT_RESERVED3_MASK, NULL, HFILL } }, { &hf_mpeg_pmt_program_info_length, { "Program Info Length", "mpeg_pmt.prog_info_len", FT_UINT16, BASE_HEX, NULL, MPEG_PMT_PROGRAM_INFO_LENGTH_MASK, NULL, HFILL } }, { &hf_mpeg_pmt_stream_type, { "Stream type", "mpeg_pmt.stream.type", FT_UINT8, BASE_HEX | BASE_EXT_STRING, &mpeg_pmt_stream_type_vals_ext, 0, NULL, HFILL } }, { &hf_mpeg_pmt_stream_reserved1, { "Reserved", "mpeg_pmt.stream.reserved1", FT_UINT16, BASE_HEX, NULL, MPEG_PMT_STREAM_RESERVED1_MASK, NULL, HFILL } }, { &hf_mpeg_pmt_stream_elementary_pid, { "Elementary PID", "mpeg_pmt.stream.elementary_pid", FT_UINT16, BASE_HEX, NULL, MPEG_PMT_STREAM_ELEMENTARY_PID_MASK, NULL, HFILL } }, { &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)); mpeg_pmt_handle = register_dissector("mpeg_pmt", dissect_mpeg_pmt, proto_mpeg_pmt); } void proto_reg_handoff_mpeg_pmt(void) { dissector_add_uint("mpeg_sect.tid", MPEG_PMT_TID, mpeg_pmt_handle); } /* * Editor modelines - http://www.wireshark.org/tools/modelines.html * * Local variables: * c-basic-offset: 4 * tab-width: 8 * indent-tabs-mode: nil * End: * * vi: set shiftwidth=4 tabstop=8 expandtab: * :indentSize=4:tabSize=8:noTabs=true: */