301 lines
11 KiB
C
301 lines
11 KiB
C
/* packet-mpeg-pmt.c
|
|
* Routines for MPEG2 (ISO/ISO 13818-1) Program Map Table (PMT) dissection
|
|
* Copyright 2012, Guy Martin <gmsoft@tuxicoman.be>
|
|
*
|
|
* Wireshark - Network traffic analyzer
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
* Copyright 1998 Gerald Combs
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <epan/packet.h>
|
|
#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 - https://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:
|
|
*/
|