2007-03-22 11:43:07 +00:00
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/* Do not modify this file. */
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/* It is created automatically by the ASN.1 to Wireshark dissector compiler */
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2007-10-29 19:25:37 +00:00
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/* packet-mpeg-audio.c */
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2008-05-20 21:51:01 +00:00
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/* ../../tools/asn2wrs.py -p mpeg-audio -c ./mpeg-audio.cnf -s ./packet-mpeg-audio-template -D . mpeg-audio.asn */
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2007-03-22 11:43:07 +00:00
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/* Input file: packet-mpeg-audio-template.c */
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#line 1 "packet-mpeg-audio-template.c"
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/* MPEG audio packet decoder.
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* Written by Shaun Jackman <sjackman@gmail.com>.
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* Copyright 2007 Shaun Jackman
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/prefs.h>
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2007-05-01 22:05:11 +00:00
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#include <epan/asn1.h>
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2007-03-22 11:43:07 +00:00
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2008-05-20 21:51:01 +00:00
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#include <wsutil/mpeg-audio.h>
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2007-03-22 11:43:07 +00:00
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#include "packet-per.h"
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/*--- Included file: packet-mpeg-audio-hf.c ---*/
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#line 1 "packet-mpeg-audio-hf.c"
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static int hf_mpeg_audio_sync = -1; /* BIT_STRING_SIZE_11 */
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static int hf_mpeg_audio_version = -1; /* T_version */
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static int hf_mpeg_audio_layer = -1; /* T_layer */
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static int hf_mpeg_audio_protection = -1; /* T_protection */
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static int hf_mpeg_audio_bitrate = -1; /* INTEGER_0_15 */
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static int hf_mpeg_audio_frequency = -1; /* INTEGER_0_3 */
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static int hf_mpeg_audio_padding = -1; /* BOOLEAN */
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static int hf_mpeg_audio_private = -1; /* BOOLEAN */
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static int hf_mpeg_audio_channel_mode = -1; /* T_channel_mode */
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static int hf_mpeg_audio_mode_extension = -1; /* INTEGER_0_3 */
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static int hf_mpeg_audio_copyright = -1; /* BOOLEAN */
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static int hf_mpeg_audio_original = -1; /* BOOLEAN */
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static int hf_mpeg_audio_emphasis = -1; /* T_emphasis */
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static int hf_mpeg_audio_tag = -1; /* OCTET_STRING_SIZE_3 */
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static int hf_mpeg_audio_title = -1; /* OCTET_STRING_SIZE_30 */
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static int hf_mpeg_audio_artist = -1; /* OCTET_STRING_SIZE_30 */
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static int hf_mpeg_audio_album = -1; /* OCTET_STRING_SIZE_30 */
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static int hf_mpeg_audio_year = -1; /* OCTET_STRING_SIZE_4 */
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static int hf_mpeg_audio_comment = -1; /* OCTET_STRING_SIZE_28 */
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static int hf_mpeg_audio_must_be_zero = -1; /* INTEGER_0_255 */
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static int hf_mpeg_audio_track = -1; /* INTEGER_0_255 */
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static int hf_mpeg_audio_genre = -1; /* T_genre */
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/*--- End of included file: packet-mpeg-audio-hf.c ---*/
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2007-05-06 22:34:05 +00:00
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#line 43 "packet-mpeg-audio-template.c"
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2007-03-22 11:43:07 +00:00
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/*--- Included file: packet-mpeg-audio-ett.c ---*/
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#line 1 "packet-mpeg-audio-ett.c"
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static gint ett_mpeg_audio_Audio = -1;
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static gint ett_mpeg_audio_ID3v1 = -1;
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/*--- End of included file: packet-mpeg-audio-ett.c ---*/
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2007-05-06 22:34:05 +00:00
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#line 44 "packet-mpeg-audio-template.c"
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2007-03-22 11:43:07 +00:00
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/*--- Included file: packet-mpeg-audio-fn.c ---*/
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#line 1 "packet-mpeg-audio-fn.c"
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static int
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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_) {
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offset = dissect_per_bit_string(tvb, offset, actx, tree, hf_index,
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11, 11, FALSE, NULL);
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return offset;
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}
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static const value_string mpeg_audio_T_version_vals[] = {
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{ 0, "mpeg-2-5" },
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{ 1, "reserved" },
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{ 2, "mpeg-2" },
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{ 3, "mpeg-1" },
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{ 0, NULL }
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};
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static int
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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_) {
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offset = dissect_per_enumerated(tvb, offset, actx, tree, hf_index,
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4, NULL, FALSE, 0, NULL);
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return offset;
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}
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static const value_string mpeg_audio_T_layer_vals[] = {
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{ 0, "reserved" },
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{ 1, "layer-3" },
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{ 2, "layer-2" },
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{ 3, "layer-1" },
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{ 0, NULL }
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};
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static int
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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_) {
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offset = dissect_per_enumerated(tvb, offset, actx, tree, hf_index,
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4, NULL, FALSE, 0, NULL);
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return offset;
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}
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static const value_string mpeg_audio_T_protection_vals[] = {
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{ 0, "crc" },
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{ 1, "none" },
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{ 0, NULL }
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};
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static int
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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_) {
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offset = dissect_per_enumerated(tvb, offset, actx, tree, hf_index,
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2, NULL, FALSE, 0, NULL);
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return offset;
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}
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static int
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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_) {
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offset = dissect_per_constrained_integer(tvb, offset, actx, tree, hf_index,
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2008-05-20 21:51:01 +00:00
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0U, 15U, NULL, FALSE);
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2007-03-22 11:43:07 +00:00
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return offset;
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}
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static int
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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_) {
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offset = dissect_per_constrained_integer(tvb, offset, actx, tree, hf_index,
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2008-05-20 21:51:01 +00:00
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0U, 3U, NULL, FALSE);
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2007-03-22 11:43:07 +00:00
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return offset;
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}
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static int
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dissect_mpeg_audio_BOOLEAN(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
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offset = dissect_per_boolean(tvb, offset, actx, tree, hf_index, NULL);
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return offset;
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}
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static const value_string mpeg_audio_T_channel_mode_vals[] = {
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{ 0, "stereo" },
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{ 1, "joint-stereo" },
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{ 2, "dual-channel" },
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{ 3, "single-channel" },
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{ 0, NULL }
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};
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static int
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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_) {
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offset = dissect_per_enumerated(tvb, offset, actx, tree, hf_index,
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4, NULL, FALSE, 0, NULL);
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return offset;
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}
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static const value_string mpeg_audio_T_emphasis_vals[] = {
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{ 0, "none" },
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{ 1, "em-50-15-ms" },
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{ 2, "reserved" },
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{ 3, "ccit-j-17" },
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{ 0, NULL }
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};
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static int
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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_) {
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offset = dissect_per_enumerated(tvb, offset, actx, tree, hf_index,
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4, NULL, FALSE, 0, NULL);
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return offset;
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}
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static const per_sequence_t Audio_sequence[] = {
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{ &hf_mpeg_audio_sync , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_BIT_STRING_SIZE_11 },
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{ &hf_mpeg_audio_version , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_T_version },
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{ &hf_mpeg_audio_layer , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_T_layer },
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{ &hf_mpeg_audio_protection, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_T_protection },
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{ &hf_mpeg_audio_bitrate , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_INTEGER_0_15 },
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{ &hf_mpeg_audio_frequency, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_INTEGER_0_3 },
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{ &hf_mpeg_audio_padding , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_BOOLEAN },
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{ &hf_mpeg_audio_private , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_BOOLEAN },
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{ &hf_mpeg_audio_channel_mode, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_T_channel_mode },
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{ &hf_mpeg_audio_mode_extension, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_INTEGER_0_3 },
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{ &hf_mpeg_audio_copyright, ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_BOOLEAN },
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{ &hf_mpeg_audio_original , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_BOOLEAN },
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{ &hf_mpeg_audio_emphasis , ASN1_NO_EXTENSIONS , ASN1_NOT_OPTIONAL, dissect_mpeg_audio_T_emphasis },
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{ NULL, 0, 0, NULL }
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};
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static int
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dissect_mpeg_audio_Audio(tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
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offset = dissect_per_sequence(tvb, offset, actx, tree, hf_index,
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ett_mpeg_audio_Audio, Audio_sequence);
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return offset;
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}
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static int
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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_) {
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offset = dissect_per_octet_string(tvb, offset, actx, tree, hf_index,
|
2007-10-29 19:25:37 +00:00
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3, 3, FALSE, NULL);
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2007-03-22 11:43:07 +00:00
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return offset;
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}
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static int
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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_) {
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offset = dissect_per_octet_string(tvb, offset, actx, tree, hf_index,
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2007-10-29 19:25:37 +00:00
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30, 30, FALSE, NULL);
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2007-03-22 11:43:07 +00:00
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return offset;
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}
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static int
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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_) {
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offset = dissect_per_octet_string(tvb, offset, actx, tree, hf_index,
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2007-10-29 19:25:37 +00:00
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4, 4, FALSE, NULL);
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2007-03-22 11:43:07 +00:00
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return offset;
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}
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static int
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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_) {
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offset = dissect_per_octet_string(tvb, offset, actx, tree, hf_index,
|
2007-10-29 19:25:37 +00:00
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28, 28, FALSE, NULL);
|
2007-03-22 11:43:07 +00:00
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return offset;
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}
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static int
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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_) {
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offset = dissect_per_constrained_integer(tvb, offset, actx, tree, hf_index,
|
2008-05-20 21:51:01 +00:00
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0U, 255U, NULL, FALSE);
|
2007-03-22 11:43:07 +00:00
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return offset;
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}
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static const value_string mpeg_audio_T_genre_vals[] = {
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{ 0, "blues" },
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{ 1, "classic-rock" },
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{ 2, "country" },
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{ 3, "dance" },
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{ 4, "disco" },
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{ 5, "funk" },
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{ 6, "grunge" },
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{ 7, "hip-hop" },
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{ 8, "jazz" },
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{ 9, "metal" },
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{ 10, "new-age" },
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{ 11, "oldies" },
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{ 12, "other" },
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|
|
|
{ 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,
|
2008-05-20 21:51:01 +00:00
|
|
|
0U, 255U, NULL, FALSE);
|
2007-03-22 11:43:07 +00:00
|
|
|
|
|
|
|
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 ---*/
|
2007-05-06 22:34:05 +00:00
|
|
|
#line 45 "packet-mpeg-audio-template.c"
|
2007-03-22 11:43:07 +00:00
|
|
|
|
2007-03-25 21:07:24 +00:00
|
|
|
static int proto_mpeg_audio = -1;
|
|
|
|
|
2007-03-22 11:43:07 +00:00
|
|
|
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 gboolean
|
|
|
|
dissect_mpeg_audio_frame(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
|
|
{
|
2007-03-25 21:07:24 +00:00
|
|
|
guint32 h;
|
2007-03-22 11:43:07 +00:00
|
|
|
struct mpa mpa;
|
2007-03-25 21:07:24 +00:00
|
|
|
size_t data_size = 0;
|
2007-03-22 11:43:07 +00:00
|
|
|
asn1_ctx_t asn1_ctx;
|
|
|
|
int offset = 0;
|
|
|
|
|
2007-03-25 21:07:24 +00:00
|
|
|
if (!tvb_bytes_exist(tvb, 0, 4))
|
|
|
|
return FALSE; /* not enough data for an MPEG audio frame */
|
|
|
|
|
|
|
|
h = tvb_get_ntohl(tvb, 0);
|
|
|
|
MPA_UNMARSHAL(&mpa, h);
|
2007-03-22 11:43:07 +00:00
|
|
|
if (!MPA_SYNC_VALID(&mpa))
|
|
|
|
return FALSE;
|
2007-03-25 21:07:24 +00:00
|
|
|
if (!MPA_VERSION_VALID(&mpa))
|
|
|
|
return FALSE;
|
|
|
|
if (!MPA_LAYER_VALID(&mpa))
|
|
|
|
return FALSE;
|
|
|
|
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL)) {
|
|
|
|
static const char *version_names[] = { "1", "2", "2.5" };
|
|
|
|
col_add_fstr(pinfo->cinfo, COL_PROTOCOL,
|
2007-11-26 23:06:07 +00:00
|
|
|
"MPEG-%s", version_names[mpa_version(&mpa)]);
|
2007-03-25 21:07:24 +00:00
|
|
|
}
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
|
|
col_add_fstr(pinfo->cinfo, COL_INFO,
|
2007-11-26 23:06:07 +00:00
|
|
|
"Audio Layer %d", mpa_layer(&mpa) + 1);
|
2007-03-25 21:07:24 +00:00
|
|
|
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,
|
2007-11-26 23:06:07 +00:00
|
|
|
"%d kb/s", mpa_bitrate(&mpa) / 1000);
|
2007-03-25 21:07:24 +00:00
|
|
|
}
|
|
|
|
if (check_col(pinfo->cinfo, COL_DEF_DST)) {
|
|
|
|
SET_ADDRESS(&pinfo->dst, AT_NONE, 0, NULL);
|
|
|
|
col_add_fstr(pinfo->cinfo, COL_DEF_DST,
|
2007-11-26 23:06:07 +00:00
|
|
|
"%g kHz", mpa_frequency(&mpa) / (float)1000);
|
2007-03-25 21:07:24 +00:00
|
|
|
}
|
|
|
|
}
|
2007-03-22 11:43:07 +00:00
|
|
|
|
|
|
|
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;
|
2007-11-26 23:06:07 +00:00
|
|
|
padding = mpa_padding(&mpa);
|
2007-03-22 11:43:07 +00:00
|
|
|
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");
|
2007-03-25 21:07:24 +00:00
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
2007-03-22 11:43:07 +00:00
|
|
|
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");
|
2007-03-25 21:07:24 +00:00
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
2007-03-22 11:43:07 +00:00
|
|
|
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;
|
|
|
|
|
2007-03-25 21:07:24 +00:00
|
|
|
if (!tvb_bytes_exist(tvb, 0, 3))
|
|
|
|
return FALSE; /* not enough data for an ID tag or audio frame */
|
2007-03-22 11:43:07 +00:00
|
|
|
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);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
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 ---*/
|
2007-05-06 22:34:05 +00:00
|
|
|
#line 171 "packet-mpeg-audio-template.c"
|
2007-03-22 11:43:07 +00:00
|
|
|
{ &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 ---*/
|
2007-05-06 22:34:05 +00:00
|
|
|
#line 191 "packet-mpeg-audio-template.c"
|
2007-03-22 11:43:07 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
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);
|
|
|
|
}
|