From Shaun J

Dissectors for MPEG streams


svn path=/trunk/; revision=21114

1 files changed, 722 insertions, 0 deletions

diff --git a/epan/dissectors/packet-mpeg-audio.c b/epan/dissectors/packet-mpeg-audio.c
new file mode 100644
index 0000000000..b3cc73b3f8
--- /dev/null
+++ b/epan/dissectors/packet-mpeg-audio.c
@@ -0,0 +1,722 @@
+/* Do not modify this file.                                                   */
+/* It is created automatically by the ASN.1 to Wireshark dissector compiler   */
+/* ./packet-mpeg-audio.c                                                      */
+/* ../../tools/asn2wrs.py -e -p mpeg-audio -c mpeg-audio.cnf -s packet-mpeg-audio-template mpeg-audio.asn */
+
+/* Input file: packet-mpeg-audio-template.c */
+
+#line 1 "packet-mpeg-audio-template.c"
+/* MPEG audio packet decoder.
+ * Written by Shaun Jackman <sjackman@gmail.com>.
+ * Copyright 2007 Shaun Jackman
+ *
+ * $Id$
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdio.h>
+#include <string.h>
+
+#include <glib.h>
+
+#include <epan/packet.h>
+#include <epan/prefs.h>
+
+#include <wiretap/mpeg-audio.h>
+
+#include "packet-per.h"
+
+
+/*--- Included file: packet-mpeg-audio-hf.c ---*/
+#line 1 "packet-mpeg-audio-hf.c"
+static int hf_mpeg_audio_sync = -1;               /* BIT_STRING_SIZE_11 */
+static int hf_mpeg_audio_version = -1;            /* T_version */
+static int hf_mpeg_audio_layer = -1;              /* T_layer */
+static int hf_mpeg_audio_protection = -1;         /* T_protection */
+static int hf_mpeg_audio_bitrate = -1;            /* INTEGER_0_15 */
+static int hf_mpeg_audio_frequency = -1;          /* INTEGER_0_3 */
+static int hf_mpeg_audio_padding = -1;            /* BOOLEAN */
+static int hf_mpeg_audio_private = -1;            /* BOOLEAN */
+static int hf_mpeg_audio_channel_mode = -1;       /* T_channel_mode */
+static int hf_mpeg_audio_mode_extension = -1;     /* INTEGER_0_3 */
+static int hf_mpeg_audio_copyright = -1;          /* BOOLEAN */
+static int hf_mpeg_audio_original = -1;           /* BOOLEAN */
+static int hf_mpeg_audio_emphasis = -1;           /* T_emphasis */
+static int hf_mpeg_audio_tag = -1;                /* OCTET_STRING_SIZE_3 */
+static int hf_mpeg_audio_title = -1;              /* OCTET_STRING_SIZE_30 */
+static int hf_mpeg_audio_artist = -1;             /* OCTET_STRING_SIZE_30 */
+static int hf_mpeg_audio_album = -1;              /* OCTET_STRING_SIZE_30 */
+static int hf_mpeg_audio_year = -1;               /* OCTET_STRING_SIZE_4 */
+static int hf_mpeg_audio_comment = -1;            /* OCTET_STRING_SIZE_28 */
+static int hf_mpeg_audio_must_be_zero = -1;       /* INTEGER_0_255 */
+static int hf_mpeg_audio_track = -1;              /* INTEGER_0_255 */
+static int hf_mpeg_audio_genre = -1;              /* T_genre */
+
+/*--- End of included file: packet-mpeg-audio-hf.c ---*/
+#line 42 "packet-mpeg-audio-template.c"
+
+/*--- Included file: packet-mpeg-audio-ett.c ---*/
+#line 1 "packet-mpeg-audio-ett.c"
+static gint ett_mpeg_audio_Audio = -1;
+static gint ett_mpeg_audio_ID3v1 = -1;
+
+/*--- End of included file: packet-mpeg-audio-ett.c ---*/
+#line 43 "packet-mpeg-audio-template.c"
+
+/*--- Included file: packet-mpeg-audio-fn.c ---*/
+#line 1 "packet-mpeg-audio-fn.c"
+
+
+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);
+
+  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, 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, 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, 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, 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, "psychadelic" },
+  {  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;
+}
+
+
+/*--- End of included file: packet-mpeg-audio-fn.c ---*/
+#line 44 "packet-mpeg-audio-template.c"
+
+static int hf_mpeg_audio = -1;
+static int hf_mpeg_audio_data = -1;
+static int hf_mpeg_audio_padbytes = -1;
+static int hf_id3v1 = -1;
+static int hf_id3v2 = -1;
+
+static size_t
+read_header(tvbuff_t *tvb, packet_info *pinfo, struct mpa *mpa)
+{
+	size_t data_size = 0;
+	guint32 h = tvb_get_ntohl(tvb, 0);
+	MPA_UNMARSHAL(mpa, h);
+	if (MPA_SYNC_VALID(mpa)) {
+		if (MPA_VERSION_VALID(mpa) && MPA_LAYER_VALID(mpa)) {
+			if (check_col(pinfo->cinfo, COL_PROTOCOL)) {
+				static const char *version_names[] = { "1", "2", "2.5" };
+				col_add_fstr(pinfo->cinfo, COL_PROTOCOL,
+						"MPEG-%s", version_names[MPA_VERSION(mpa)]);
+			}
+			if (check_col(pinfo->cinfo, COL_INFO))
+				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 = MPA_DATA_BYTES(mpa) - sizeof mpa;
+				if (check_col(pinfo->cinfo, COL_DEF_SRC)) {
+					SET_ADDRESS(&pinfo->src, AT_NONE, 0, NULL);
+					col_add_fstr(pinfo->cinfo, COL_DEF_SRC,
+							"%d kb/s", MPA_BITRATE(mpa) / 1000);
+				}
+				if (check_col(pinfo->cinfo, COL_DEF_DST)) {
+					SET_ADDRESS(&pinfo->dst, AT_NONE, 0, NULL);
+					col_add_fstr(pinfo->cinfo, COL_DEF_DST,
+							"%g kHz", MPA_FREQUENCY(mpa) / (float)1000);
+				}
+			}
+		} else {
+			if (check_col(pinfo->cinfo, COL_PROTOCOL))
+				col_add_str(pinfo->cinfo, COL_PROTOCOL, "MPEG");
+		}
+	}
+	return data_size;
+}
+
+static gboolean
+dissect_mpeg_audio_frame(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+	struct mpa mpa;
+	size_t data_size;
+	asn1_ctx_t asn1_ctx;
+	int offset = 0;
+
+	data_size = read_header(tvb, pinfo, &mpa);
+	if (!MPA_SYNC_VALID(&mpa))
+		return FALSE;
+
+	if (tree == NULL)
+		return TRUE;
+
+	asn1_ctx_init(&asn1_ctx, ASN1_ENC_PER, TRUE, pinfo);
+	offset = dissect_mpeg_audio_Audio(tvb, offset, &asn1_ctx,
+			tree, hf_mpeg_audio);
+	if (data_size > 0) {
+		unsigned int padding;
+
+		proto_tree_add_item(tree, hf_mpeg_audio_data, tvb,
+				offset / 8, data_size, FALSE);
+		offset += data_size * 8;
+		padding = MPA_PADDING(&mpa);
+		if (padding > 0) {
+			proto_tree_add_item(tree, hf_mpeg_audio_padbytes, tvb,
+					offset / 8, padding, FALSE);
+			offset += padding * 8;
+		}
+	}
+	return TRUE;
+}
+
+static void
+dissect_id3v1(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+	asn1_ctx_t asn1_ctx;
+
+	if (check_col(pinfo->cinfo, COL_PROTOCOL))
+		col_set_str(pinfo->cinfo, COL_PROTOCOL, "ID3v1");
+	if (tree == NULL)
+		return;
+	asn1_ctx_init(&asn1_ctx, ASN1_ENC_PER, TRUE, pinfo);
+	dissect_mpeg_audio_ID3v1(tvb, 0, &asn1_ctx,
+			tree, hf_id3v1);
+}
+
+static void
+dissect_id3v2(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+	if (check_col(pinfo->cinfo, COL_PROTOCOL))
+		col_set_str(pinfo->cinfo, COL_PROTOCOL, "ID3v2");
+	proto_tree_add_item(tree, hf_id3v2, tvb,
+			0, -1, FALSE);
+}
+
+static gboolean
+dissect_mpeg_audio(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+	int magic;
+
+	if (check_col(pinfo->cinfo, COL_PROTOCOL))
+		col_clear(pinfo->cinfo, COL_PROTOCOL);
+	if (check_col(pinfo->cinfo, COL_INFO))
+		col_clear(pinfo->cinfo, COL_INFO);
+
+	magic = tvb_get_ntoh24(tvb, 0);
+	switch (magic) {
+		case 0x544147: /* TAG */
+			dissect_id3v1(tvb, pinfo, tree);
+			return TRUE;
+		case 0x494433: /* ID3 */
+			dissect_id3v2(tvb, pinfo, tree);
+			return TRUE;
+		default:
+			return dissect_mpeg_audio_frame(tvb, pinfo, tree);
+	}
+}
+
+static int proto_mpeg_audio = -1;
+
+void
+proto_register_mpeg_audio(void)
+{
+	static hf_register_info hf[] = {
+
+/*--- Included file: packet-mpeg-audio-hfarr.c ---*/
+#line 1 "packet-mpeg-audio-hfarr.c"
+    { &hf_mpeg_audio_sync,
+      { "sync", "mpeg-audio.sync",
+        FT_BYTES, BASE_HEX, NULL, 0,
+        "mpeg_audio.BIT_STRING_SIZE_11", HFILL }},
+    { &hf_mpeg_audio_version,
+      { "version", "mpeg-audio.version",
+        FT_UINT32, BASE_DEC, VALS(mpeg_audio_T_version_vals), 0,
+        "mpeg_audio.T_version", HFILL }},
+    { &hf_mpeg_audio_layer,
+      { "layer", "mpeg-audio.layer",
+        FT_UINT32, BASE_DEC, VALS(mpeg_audio_T_layer_vals), 0,
+        "mpeg_audio.T_layer", HFILL }},
+    { &hf_mpeg_audio_protection,
+      { "protection", "mpeg-audio.protection",
+        FT_UINT32, BASE_DEC, VALS(mpeg_audio_T_protection_vals), 0,
+        "mpeg_audio.T_protection", HFILL }},
+    { &hf_mpeg_audio_bitrate,
+      { "bitrate", "mpeg-audio.bitrate",
+        FT_UINT32, BASE_DEC, NULL, 0,
+        "mpeg_audio.INTEGER_0_15", HFILL }},
+    { &hf_mpeg_audio_frequency,
+      { "frequency", "mpeg-audio.frequency",
+        FT_UINT32, BASE_DEC, NULL, 0,
+        "mpeg_audio.INTEGER_0_3", HFILL }},
+    { &hf_mpeg_audio_padding,
+      { "padding", "mpeg-audio.padding",
+        FT_BOOLEAN, 8, NULL, 0,
+        "mpeg_audio.BOOLEAN", HFILL }},
+    { &hf_mpeg_audio_private,
+      { "private", "mpeg-audio.private",
+        FT_BOOLEAN, 8, NULL, 0,
+        "mpeg_audio.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,
+        "mpeg_audio.T_channel_mode", HFILL }},
+    { &hf_mpeg_audio_mode_extension,
+      { "mode-extension", "mpeg-audio.mode_extension",
+        FT_UINT32, BASE_DEC, NULL, 0,
+        "mpeg_audio.INTEGER_0_3", HFILL }},
+    { &hf_mpeg_audio_copyright,
+      { "copyright", "mpeg-audio.copyright",
+        FT_BOOLEAN, 8, NULL, 0,
+        "mpeg_audio.BOOLEAN", HFILL }},
+    { &hf_mpeg_audio_original,
+      { "original", "mpeg-audio.original",
+        FT_BOOLEAN, 8, NULL, 0,
+        "mpeg_audio.BOOLEAN", HFILL }},
+    { &hf_mpeg_audio_emphasis,
+      { "emphasis", "mpeg-audio.emphasis",
+        FT_UINT32, BASE_DEC, VALS(mpeg_audio_T_emphasis_vals), 0,
+        "mpeg_audio.T_emphasis", HFILL }},
+    { &hf_mpeg_audio_tag,
+      { "tag", "mpeg-audio.tag",
+        FT_STRING, BASE_HEX, NULL, 0,
+        "mpeg_audio.OCTET_STRING_SIZE_3", HFILL }},
+    { &hf_mpeg_audio_title,
+      { "title", "mpeg-audio.title",
+        FT_STRING, BASE_HEX, NULL, 0,
+        "mpeg_audio.OCTET_STRING_SIZE_30", HFILL }},
+    { &hf_mpeg_audio_artist,
+      { "artist", "mpeg-audio.artist",
+        FT_STRING, BASE_HEX, NULL, 0,
+        "mpeg_audio.OCTET_STRING_SIZE_30", HFILL }},
+    { &hf_mpeg_audio_album,
+      { "album", "mpeg-audio.album",
+        FT_STRING, BASE_HEX, NULL, 0,
+        "mpeg_audio.OCTET_STRING_SIZE_30", HFILL }},
+    { &hf_mpeg_audio_year,
+      { "year", "mpeg-audio.year",
+        FT_STRING, BASE_HEX, NULL, 0,
+        "mpeg_audio.OCTET_STRING_SIZE_4", HFILL }},
+    { &hf_mpeg_audio_comment,
+      { "comment", "mpeg-audio.comment",
+        FT_STRING, BASE_HEX, NULL, 0,
+        "mpeg_audio.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,
+        "mpeg_audio.INTEGER_0_255", HFILL }},
+    { &hf_mpeg_audio_track,
+      { "track", "mpeg-audio.track",
+        FT_UINT32, BASE_DEC, NULL, 0,
+        "mpeg_audio.INTEGER_0_255", HFILL }},
+    { &hf_mpeg_audio_genre,
+      { "genre", "mpeg-audio.genre",
+        FT_UINT32, BASE_DEC, VALS(mpeg_audio_T_genre_vals), 0,
+        "mpeg_audio.T_genre", HFILL }},
+
+/*--- End of included file: packet-mpeg-audio-hfarr.c ---*/
+#line 175 "packet-mpeg-audio-template.c"
+		{ &hf_mpeg_audio,
+			{ "MPEG Audio", "mpeg.audio",
+				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", "id3v1",
+				FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL }},
+		{ &hf_id3v2,
+			{ "ID3v2", "id3v2",
+				FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL }},
+	};
+
+	static gint *ett[] = {
+
+/*--- Included file: packet-mpeg-audio-ettarr.c ---*/
+#line 1 "packet-mpeg-audio-ettarr.c"
+    &ett_mpeg_audio_Audio,
+    &ett_mpeg_audio_ID3v1,
+
+/*--- End of included file: packet-mpeg-audio-ettarr.c ---*/
+#line 195 "packet-mpeg-audio-template.c"
+	};
+
+	if (proto_mpeg_audio != -1)
+		return;
+
+	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));
+}
+
+void
+proto_reg_handoff_mpeg_audio(void)
+{
+	heur_dissector_add("mpeg", dissect_mpeg_audio, proto_mpeg_audio);
+}