/* 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");

}