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|
/* Do not modify this file. Changes will be overwritten. */
/* Generated automatically by the ASN.1 to Wireshark dissector compiler */
/* packet-mpeg-audio.c */
/* asn2wrs.py -q -L -p mpeg-audio -c ./mpeg-audio.cnf -s ./packet-mpeg-audio-template -D . -O ../.. mpeg-audio.asn */
/* MPEG audio packet decoder.
* Written by Shaun Jackman <sjackman@gmail.com>.
* Copyright 2007 Shaun Jackman
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/asn1.h>
#include <wsutil/mpeg-audio.h>
#include <wsutil/array.h>
#include "packet-per.h"
static int hf_mpeg_audio_sync; /* BIT_STRING_SIZE_11 */
static int hf_mpeg_audio_version; /* T_version */
static int hf_mpeg_audio_layer; /* T_layer */
static int hf_mpeg_audio_protection; /* T_protection */
static int hf_mpeg_audio_bitrate; /* INTEGER_0_15 */
static int hf_mpeg_audio_frequency; /* INTEGER_0_3 */
static int hf_mpeg_audio_padding; /* BOOLEAN */
static int hf_mpeg_audio_private; /* BOOLEAN */
static int hf_mpeg_audio_channel_mode; /* T_channel_mode */
static int hf_mpeg_audio_mode_extension; /* INTEGER_0_3 */
static int hf_mpeg_audio_copyright; /* BOOLEAN */
static int hf_mpeg_audio_original; /* BOOLEAN */
static int hf_mpeg_audio_emphasis; /* T_emphasis */
static int hf_mpeg_audio_tag; /* OCTET_STRING_SIZE_3 */
static int hf_mpeg_audio_title; /* OCTET_STRING_SIZE_30 */
static int hf_mpeg_audio_artist; /* OCTET_STRING_SIZE_30 */
static int hf_mpeg_audio_album; /* OCTET_STRING_SIZE_30 */
static int hf_mpeg_audio_year; /* OCTET_STRING_SIZE_4 */
static int hf_mpeg_audio_comment; /* OCTET_STRING_SIZE_28 */
static int hf_mpeg_audio_must_be_zero; /* INTEGER_0_255 */
static int hf_mpeg_audio_track; /* INTEGER_0_255 */
static int hf_mpeg_audio_genre; /* T_genre */
static int ett_mpeg_audio_Audio;
static int ett_mpeg_audio_ID3v1;
static int
dissect_mpeg_audio_BIT_STRING_SIZE_11(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_bit_string(tvb, offset, actx, tree, hf_index,
11, 11, false, NULL, 0, NULL, NULL);
return offset;
}
static const value_string mpeg_audio_T_version_vals[] = {
{ 0, "mpeg-2-5" },
{ 1, "reserved" },
{ 2, "mpeg-2" },
{ 3, "mpeg-1" },
{ 0, NULL }
};
static int
dissect_mpeg_audio_T_version(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_enumerated(tvb, offset, actx, tree, hf_index,
4, NULL, false, 0, NULL);
return offset;
}
static const value_string mpeg_audio_T_layer_vals[] = {
{ 0, "reserved" },
{ 1, "layer-3" },
{ 2, "layer-2" },
{ 3, "layer-1" },
{ 0, NULL }
};
static int
dissect_mpeg_audio_T_layer(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_enumerated(tvb, offset, actx, tree, hf_index,
4, NULL, false, 0, NULL);
return offset;
}
static const value_string mpeg_audio_T_protection_vals[] = {
{ 0, "crc" },
{ 1, "none" },
{ 0, NULL }
};
static int
dissect_mpeg_audio_T_protection(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_enumerated(tvb, offset, actx, tree, hf_index,
2, NULL, false, 0, NULL);
return offset;
}
static int
dissect_mpeg_audio_INTEGER_0_15(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_constrained_integer(tvb, offset, actx, tree, hf_index,
0U, 15U, NULL, false);
return offset;
}
static int
dissect_mpeg_audio_INTEGER_0_3(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_constrained_integer(tvb, offset, actx, tree, hf_index,
0U, 3U, NULL, false);
return offset;
}
static int
dissect_mpeg_audio_BOOLEAN(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_boolean(tvb, offset, actx, tree, hf_index, NULL);
return offset;
}
static const value_string mpeg_audio_T_channel_mode_vals[] = {
{ 0, "stereo" },
{ 1, "joint-stereo" },
{ 2, "dual-channel" },
{ 3, "single-channel" },
{ 0, NULL }
};
static int
dissect_mpeg_audio_T_channel_mode(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_enumerated(tvb, offset, actx, tree, hf_index,
4, NULL, false, 0, NULL);
return offset;
}
static const value_string mpeg_audio_T_emphasis_vals[] = {
{ 0, "none" },
{ 1, "em-50-15-ms" },
{ 2, "reserved" },
{ 3, "ccit-j-17" },
{ 0, NULL }
};
static int
dissect_mpeg_audio_T_emphasis(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_enumerated(tvb, offset, actx, tree, hf_index,
4, NULL, false, 0, NULL);
return offset;
}
static const per_sequence_t Audio_sequence[] = {
{ &hf_mpeg_audio_sync , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_BIT_STRING_SIZE_11 },
{ &hf_mpeg_audio_version , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_T_version },
{ &hf_mpeg_audio_layer , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_T_layer },
{ &hf_mpeg_audio_protection, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_T_protection },
{ &hf_mpeg_audio_bitrate , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_INTEGER_0_15 },
{ &hf_mpeg_audio_frequency, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_INTEGER_0_3 },
{ &hf_mpeg_audio_padding , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_BOOLEAN },
{ &hf_mpeg_audio_private , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_BOOLEAN },
{ &hf_mpeg_audio_channel_mode, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_T_channel_mode },
{ &hf_mpeg_audio_mode_extension, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_INTEGER_0_3 },
{ &hf_mpeg_audio_copyright, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_BOOLEAN },
{ &hf_mpeg_audio_original , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_BOOLEAN },
{ &hf_mpeg_audio_emphasis , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_T_emphasis },
{ NULL, 0, 0, NULL }
};
static int
dissect_mpeg_audio_Audio(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_sequence(tvb, offset, actx, tree, hf_index,
ett_mpeg_audio_Audio, Audio_sequence);
return offset;
}
static int
dissect_mpeg_audio_OCTET_STRING_SIZE_3(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_octet_string(tvb, offset, actx, tree, hf_index,
3, 3, false, NULL);
return offset;
}
static int
dissect_mpeg_audio_OCTET_STRING_SIZE_30(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_octet_string(tvb, offset, actx, tree, hf_index,
30, 30, false, NULL);
return offset;
}
static int
dissect_mpeg_audio_OCTET_STRING_SIZE_4(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_octet_string(tvb, offset, actx, tree, hf_index,
4, 4, false, NULL);
return offset;
}
static int
dissect_mpeg_audio_OCTET_STRING_SIZE_28(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_octet_string(tvb, offset, actx, tree, hf_index,
28, 28, false, NULL);
return offset;
}
static int
dissect_mpeg_audio_INTEGER_0_255(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_constrained_integer(tvb, offset, actx, tree, hf_index,
0U, 255U, NULL, false);
return offset;
}
static const value_string mpeg_audio_T_genre_vals[] = {
{ 0, "blues" },
{ 1, "classic-rock" },
{ 2, "country" },
{ 3, "dance" },
{ 4, "disco" },
{ 5, "funk" },
{ 6, "grunge" },
{ 7, "hip-hop" },
{ 8, "jazz" },
{ 9, "metal" },
{ 10, "new-age" },
{ 11, "oldies" },
{ 12, "other" },
{ 13, "pop" },
{ 14, "r-and-b" },
{ 15, "rap" },
{ 16, "reggae" },
{ 17, "rock" },
{ 18, "techno" },
{ 19, "industrial" },
{ 20, "alternative" },
{ 21, "ska" },
{ 22, "death-metal" },
{ 23, "pranks" },
{ 24, "soundtrack" },
{ 25, "euro-techno" },
{ 26, "ambient" },
{ 27, "trip-hop" },
{ 28, "vocal" },
{ 29, "jazz-and-funk" },
{ 30, "fusion" },
{ 31, "trance" },
{ 32, "classical" },
{ 33, "instrumental" },
{ 34, "acid" },
{ 35, "house" },
{ 36, "game" },
{ 37, "sound-clip" },
{ 38, "gospel" },
{ 39, "noise" },
{ 40, "alternative-rock" },
{ 41, "bass" },
{ 42, "soul" },
{ 43, "punk" },
{ 44, "space" },
{ 45, "meditative" },
{ 46, "instrumental-pop" },
{ 47, "instrumental-rock" },
{ 48, "ethnic" },
{ 49, "gothic" },
{ 50, "darkwave" },
{ 51, "techno-industrial" },
{ 52, "electronic" },
{ 53, "pop-folk" },
{ 54, "eurodance" },
{ 55, "dream" },
{ 56, "southern-rock" },
{ 57, "comedy" },
{ 58, "cult" },
{ 59, "gangsta" },
{ 60, "top-40" },
{ 61, "christian-rap" },
{ 62, "pop-funk" },
{ 63, "jungle" },
{ 64, "native-american" },
{ 65, "cabaret" },
{ 66, "new-wave" },
{ 67, "psychedelic" },
{ 68, "rave" },
{ 69, "showtunes" },
{ 70, "trailer" },
{ 71, "lo-fi" },
{ 72, "tribal" },
{ 73, "acid-punk" },
{ 74, "acid-jazz" },
{ 75, "polka" },
{ 76, "retro" },
{ 77, "musical" },
{ 78, "rock-and-roll" },
{ 79, "hard-rock" },
{ 80, "folk" },
{ 81, "folk-rock" },
{ 82, "national-folk" },
{ 83, "swing" },
{ 84, "fast-fusion" },
{ 85, "bebob" },
{ 86, "latin" },
{ 87, "revival" },
{ 88, "celtic" },
{ 89, "bluegrass" },
{ 90, "avantgarde" },
{ 91, "gothic-rock" },
{ 92, "progressive-rock" },
{ 93, "psychedelic-rock" },
{ 94, "symphonic-rock" },
{ 95, "slow-rock" },
{ 96, "big-band" },
{ 97, "chorus" },
{ 98, "easy-listening" },
{ 99, "acoustic" },
{ 100, "humour" },
{ 101, "speech" },
{ 102, "chanson" },
{ 103, "opera" },
{ 104, "chamber-music" },
{ 105, "sonata" },
{ 106, "symphony" },
{ 107, "booty-bass" },
{ 108, "primus" },
{ 109, "porn-groove" },
{ 110, "satire" },
{ 111, "slow-jam" },
{ 112, "club" },
{ 113, "tango" },
{ 114, "samba" },
{ 115, "folklore" },
{ 116, "ballad" },
{ 117, "power-ballad" },
{ 118, "rhythmic-soul" },
{ 119, "freestyle" },
{ 120, "duet" },
{ 121, "punk-rock" },
{ 122, "drum-solo" },
{ 123, "a-cappella" },
{ 124, "euro-house" },
{ 125, "dance-hall" },
{ 0, NULL }
};
static int
dissect_mpeg_audio_T_genre(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_constrained_integer(tvb, offset, actx, tree, hf_index,
0U, 255U, NULL, false);
return offset;
}
static const per_sequence_t ID3v1_sequence[] = {
{ &hf_mpeg_audio_tag , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_OCTET_STRING_SIZE_3 },
{ &hf_mpeg_audio_title , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_OCTET_STRING_SIZE_30 },
{ &hf_mpeg_audio_artist , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_OCTET_STRING_SIZE_30 },
{ &hf_mpeg_audio_album , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_OCTET_STRING_SIZE_30 },
{ &hf_mpeg_audio_year , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_OCTET_STRING_SIZE_4 },
{ &hf_mpeg_audio_comment , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_OCTET_STRING_SIZE_28 },
{ &hf_mpeg_audio_must_be_zero, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_INTEGER_0_255 },
{ &hf_mpeg_audio_track , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_INTEGER_0_255 },
{ &hf_mpeg_audio_genre , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_T_genre },
{ NULL, 0, 0, NULL }
};
static int
dissect_mpeg_audio_ID3v1(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
offset = dissect_per_sequence(tvb, offset, actx, tree, hf_index,
ett_mpeg_audio_ID3v1, ID3v1_sequence);
return offset;
}
void proto_register_mpeg_audio(void);
void proto_reg_handoff_mpeg_audio(void);
dissector_handle_t mpeg_audio_handle;
static int proto_mpeg_audio;
static dissector_handle_t id3v2_handle;
static int hf_mpeg_audio_header;
static int hf_mpeg_audio_data;
static int hf_mpeg_audio_padbytes;
static int hf_id3v1;
static int ett_mpeg_audio;
static bool
test_mpeg_audio(tvbuff_t *tvb, int offset)
{
uint32_t hdr;
struct mpa mpa;
if (!tvb_bytes_exist(tvb, offset, 4))
return false;
if (tvb_strneql(tvb, offset, "TAG", 3) == 0)
return true;
if (tvb_strneql(tvb, offset, "ID3", 3) == 0)
return true;
hdr = tvb_get_uint32(tvb, offset, ENC_BIG_ENDIAN);
MPA_UNMARSHAL(&mpa, hdr);
return MPA_VALID(&mpa);
}
static int
mpeg_resync(tvbuff_t *tvb, int offset)
{
uint32_t hdr;
struct mpa mpa;
/* This only looks to resync on another frame; it doesn't
* look for an ID3 tag.
*/
offset = tvb_find_uint8(tvb, offset, -1, '\xff');
while (offset != -1 && tvb_bytes_exist(tvb, offset, 4)) {
hdr = tvb_get_uint32(tvb, offset, ENC_BIG_ENDIAN);
MPA_UNMARSHAL(&mpa, hdr);
if (MPA_VALID(&mpa)) {
return offset;
}
offset = tvb_find_uint8(tvb, offset + 1, -1, '\xff');
}
return tvb_reported_length(tvb);
}
static int
dissect_mpeg_audio_frame(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
uint32_t h;
struct mpa mpa;
int data_size = 0;
asn1_ctx_t asn1_ctx;
int offset = 0;
static const char *version_names[] = { "1", "2", "2.5" };
if (!tvb_bytes_exist(tvb, 0, 4))
return 0;
h = tvb_get_ntohl(tvb, 0);
MPA_UNMARSHAL(&mpa, h);
if (!MPA_SYNC_VALID(&mpa) || !MPA_VERSION_VALID(&mpa) || !MPA_LAYER_VALID(&mpa)) {
return 0;
}
col_add_fstr(pinfo->cinfo, COL_PROTOCOL,
"MPEG-%s", version_names[mpa_version(&mpa)]);
col_add_fstr(pinfo->cinfo, COL_INFO,
"Audio Layer %d", mpa_layer(&mpa) + 1);
if (MPA_BITRATE_VALID(&mpa) && MPA_FREQUENCY_VALID(&mpa)) {
data_size = (int)(MPA_DATA_BYTES(&mpa) - sizeof mpa);
col_append_fstr(pinfo->cinfo, COL_INFO,
", %d kb/s, %g kHz",
mpa_bitrate(&mpa) / 1000,
mpa_frequency(&mpa) / (float)1000);
}
asn1_ctx_init(&asn1_ctx, ASN1_ENC_PER, true, pinfo);
offset = dissect_mpeg_audio_Audio(tvb, offset, &asn1_ctx,
tree, hf_mpeg_audio_header);
if (data_size > 0) {
unsigned int padding;
proto_tree_add_item(tree, hf_mpeg_audio_data, tvb,
offset / 8, data_size, ENC_NA);
offset += data_size * 8;
padding = mpa_padding(&mpa);
if (padding > 0) {
proto_tree_add_item(tree, hf_mpeg_audio_padbytes, tvb,
offset / 8, padding, ENC_NA);
offset += padding * 8;
}
}
return offset / 8;
}
static int
dissect_id3v1(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
asn1_ctx_t asn1_ctx;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "ID3v1");
col_clear(pinfo->cinfo, COL_INFO);
asn1_ctx_init(&asn1_ctx, ASN1_ENC_PER, true, pinfo);
return dissect_mpeg_audio_ID3v1(tvb, 0, &asn1_ctx,
tree, hf_id3v1);
}
static int
dissect_mpeg_audio(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
proto_item *ti;
proto_tree *mpeg_audio_tree;
int magic, offset = 0;
uint32_t frame_len;
tvbuff_t *next_tvb;
ti = proto_tree_add_item(tree, proto_mpeg_audio, tvb, offset, -1, ENC_NA);
mpeg_audio_tree = proto_item_add_subtree(ti, ett_mpeg_audio);
while (tvb_reported_length_remaining(tvb, offset) >= 4) {
next_tvb = tvb_new_subset_remaining(tvb, offset);
magic = tvb_get_ntoh24(next_tvb, 0);
switch (magic) {
case 0x544147: /* TAG */
offset += dissect_id3v1(next_tvb, pinfo, mpeg_audio_tree);
break;
case 0x494433: /* ID3 */
offset += call_dissector(id3v2_handle, tvb, pinfo, mpeg_audio_tree);
break;
default:
frame_len = dissect_mpeg_audio_frame(next_tvb, pinfo, mpeg_audio_tree);
if (frame_len == 0) {
frame_len = mpeg_resync(next_tvb, 0);
}
offset += frame_len;
}
}
return tvb_reported_length(tvb);
}
static bool
dissect_mpeg_audio_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
if (!test_mpeg_audio(tvb, 0)) {
return false;
}
dissect_mpeg_audio(tvb, pinfo, tree, data);
return true;
}
void
proto_register_mpeg_audio(void)
{
static hf_register_info hf[] = {
{ &hf_mpeg_audio_sync,
{ "sync", "mpeg-audio.sync",
FT_BYTES, BASE_NONE, NULL, 0,
"BIT_STRING_SIZE_11", HFILL }},
{ &hf_mpeg_audio_version,
{ "version", "mpeg-audio.version",
FT_UINT32, BASE_DEC, VALS(mpeg_audio_T_version_vals), 0,
NULL, HFILL }},
{ &hf_mpeg_audio_layer,
{ "layer", "mpeg-audio.layer",
FT_UINT32, BASE_DEC, VALS(mpeg_audio_T_layer_vals), 0,
NULL, HFILL }},
{ &hf_mpeg_audio_protection,
{ "protection", "mpeg-audio.protection",
FT_UINT32, BASE_DEC, VALS(mpeg_audio_T_protection_vals), 0,
NULL, HFILL }},
{ &hf_mpeg_audio_bitrate,
{ "bitrate", "mpeg-audio.bitrate",
FT_UINT32, BASE_DEC, NULL, 0,
"INTEGER_0_15", HFILL }},
{ &hf_mpeg_audio_frequency,
{ "frequency", "mpeg-audio.frequency",
FT_UINT32, BASE_DEC, NULL, 0,
"INTEGER_0_3", HFILL }},
{ &hf_mpeg_audio_padding,
{ "padding", "mpeg-audio.padding",
FT_BOOLEAN, BASE_NONE, NULL, 0,
"BOOLEAN", HFILL }},
{ &hf_mpeg_audio_private,
{ "private", "mpeg-audio.private",
FT_BOOLEAN, BASE_NONE, NULL, 0,
"BOOLEAN", HFILL }},
{ &hf_mpeg_audio_channel_mode,
{ "channel-mode", "mpeg-audio.channel_mode",
FT_UINT32, BASE_DEC, VALS(mpeg_audio_T_channel_mode_vals), 0,
NULL, HFILL }},
{ &hf_mpeg_audio_mode_extension,
{ "mode-extension", "mpeg-audio.mode_extension",
FT_UINT32, BASE_DEC, NULL, 0,
"INTEGER_0_3", HFILL }},
{ &hf_mpeg_audio_copyright,
{ "copyright", "mpeg-audio.copyright",
FT_BOOLEAN, BASE_NONE, NULL, 0,
"BOOLEAN", HFILL }},
{ &hf_mpeg_audio_original,
{ "original", "mpeg-audio.original",
FT_BOOLEAN, BASE_NONE, NULL, 0,
"BOOLEAN", HFILL }},
{ &hf_mpeg_audio_emphasis,
{ "emphasis", "mpeg-audio.emphasis",
FT_UINT32, BASE_DEC, VALS(mpeg_audio_T_emphasis_vals), 0,
NULL, HFILL }},
{ &hf_mpeg_audio_tag,
{ "tag", "mpeg-audio.tag",
FT_STRING, BASE_NONE, NULL, 0,
"OCTET_STRING_SIZE_3", HFILL }},
{ &hf_mpeg_audio_title,
{ "title", "mpeg-audio.title",
FT_STRING, BASE_NONE, NULL, 0,
"OCTET_STRING_SIZE_30", HFILL }},
{ &hf_mpeg_audio_artist,
{ "artist", "mpeg-audio.artist",
FT_STRING, BASE_NONE, NULL, 0,
"OCTET_STRING_SIZE_30", HFILL }},
{ &hf_mpeg_audio_album,
{ "album", "mpeg-audio.album",
FT_STRING, BASE_NONE, NULL, 0,
"OCTET_STRING_SIZE_30", HFILL }},
{ &hf_mpeg_audio_year,
{ "year", "mpeg-audio.year",
FT_STRING, BASE_NONE, NULL, 0,
"OCTET_STRING_SIZE_4", HFILL }},
{ &hf_mpeg_audio_comment,
{ "comment", "mpeg-audio.comment",
FT_STRING, BASE_NONE, NULL, 0,
"OCTET_STRING_SIZE_28", HFILL }},
{ &hf_mpeg_audio_must_be_zero,
{ "must-be-zero", "mpeg-audio.must_be_zero",
FT_UINT32, BASE_DEC, NULL, 0,
"INTEGER_0_255", HFILL }},
{ &hf_mpeg_audio_track,
{ "track", "mpeg-audio.track",
FT_UINT32, BASE_DEC, NULL, 0,
"INTEGER_0_255", HFILL }},
{ &hf_mpeg_audio_genre,
{ "genre", "mpeg-audio.genre",
FT_UINT32, BASE_DEC, VALS(mpeg_audio_T_genre_vals), 0,
NULL, HFILL }},
{ &hf_mpeg_audio_header,
{ "Frame Header", "mpeg-audio.header",
FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL }},
{ &hf_mpeg_audio_data,
{ "Data", "mpeg-audio.data",
FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }},
{ &hf_mpeg_audio_padbytes,
{ "Padding", "mpeg-audio.padbytes",
FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }},
{ &hf_id3v1,
{ "ID3v1", "mpeg-audio.id3v1",
FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL }},
};
static int *ett[] = {
&ett_mpeg_audio,
&ett_mpeg_audio_Audio,
&ett_mpeg_audio_ID3v1,
};
proto_mpeg_audio = proto_register_protocol("Moving Picture Experts Group Audio", "MPEG Audio", "mpeg-audio");
proto_register_field_array(proto_mpeg_audio, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
mpeg_audio_handle = register_dissector("mpeg-audio", dissect_mpeg_audio, proto_mpeg_audio);
}
void
proto_reg_handoff_mpeg_audio(void)
{
dissector_add_string("media_type", "audio/mpeg", mpeg_audio_handle);
/* "audio/mp3" used by Chrome before 2020 */
/* https://chromium.googlesource.com/chromium/src/+/842f46a95f49e24534ad35c7a71e5c425d426550 */
dissector_add_string("media_type", "audio/mp3", mpeg_audio_handle);
heur_dissector_add("mpeg", dissect_mpeg_audio_heur, "MPEG Audio", "mpeg_audio", proto_mpeg_audio, HEURISTIC_ENABLE);
id3v2_handle = find_dissector("id3v2");
}
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