/* packet-ieee1722a.c * Routines for AVB-TP (Audio Video Bridging - Transport Protocol) dissection * Copyright 2014, Andreas Leibold , * Patrick Martin * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * The 1722a Protocol specification can be found here: * http://grouper.ieee.org/groups/1722/ * * Dissector based on specification version: 1722a Draft 7 * * Only 1722a "Audio" and "Clock Reference Stream Audio Timestamps" * are dissected. */ #include "config.h" #include #include void proto_register_1722a(void); void proto_reg_handoff_1722a(void); /* 1722a Offsets */ /* 1722a audio */ #define IEEE_1722A_CD_OFFSET 0 #define IEEE_1722A_VERSION_OFFSET 1 #define IEEE_1722A_SEQ_NUM_OFFSET 2 #define IEEE_1722A_TU_FIELD_OFFSET 3 #define IEEE_1722A_STREAM_ID_OFFSET 4 #define IEEE_1722A_TIMESTAMP_OFFSET 12 #define IEEE_1722A_FORMAT_INFO_OFFSET 16 #define IEEE_1722A_NOM_SAMPLE_RATE_OFFSET 17 #define IEEE_1722A_CHANNELS_PER_FRAME_OFFSET 17 #define IEEE_1722A_BIT_DEPTH_OFFSET 19 #define IEEE_1722A_STREAM_DATA_LENGTH_OFFSET 20 #define IEEE_1722A_SPARSE_TIMESTAMP_OFFSET 22 #define IEEE_1722A_EVT_OFFSET 22 #define IEEE_1722A_DATA_OFFSET 24 /* CRF */ #define IEEE_1722A_CRF_TYPE_OFFSET 22 #define IEEE_1722A_CRF_CLOCK_FREQUENCY_OFFSET 24 #define IEEE_1722A_CRF_CLOCK_MULTIPLIER_OFFSET 25 #define IEEE_1722A_CRF_TIMESTAMP_INTERVAL_OFFSET 26 #define IEEE_1722A_CRF_AUDIO_TIMESTAMP_OFFSET 28 /* Bit Field Masks */ /* 1722a audio */ #define IEEE_1722A_SUBTYPE_MASK 0x7f #define IEEE_1722A_MR_MASK 0x08 #define IEEE_1722A_TV_MASK 0x01 #define IEEE_1722A_TU_MASK 0x01 #define IEEE_1722A_NOM_SAMPLE_RATE_MASK 0xf0 #define IEEE_1722A_CHANNEL_PER_FRAME_MASK 0x03ff #define IEEE_1722A_SP_MASK 0x10 #define IEEE_1722A_EVT_MASK 0x0f #define IEEE_1722A_CRF_AUDIO_SAMPLE_TIMESTAMP 1 #define IEEE_1722A_CRF_TIMESTAMP_SIZE 8 /* size of the CRF timestamp in bytes */ #define IEEE_1722A_SUBTYPE_AVTP_AUDIO 0x02 #define IEEE_1722A_SUBTYPE_CRF 0x05 #define FORMAT_INFO_USER_SPECIFIED 0 #define FORMAT_INFO_32FLOAT 1 #define FORMAT_INFO_32INTEGER 2 #define FORMAT_INFO_24INTEGER 3 #define FORMAT_INFO_16INTEGER 4 static const value_string format_info_vals [] = { {FORMAT_INFO_USER_SPECIFIED, "User specified"}, {FORMAT_INFO_32FLOAT, "[32bit floating]"}, {FORMAT_INFO_32INTEGER, "[32bit integer]"}, {FORMAT_INFO_24INTEGER, "[24bit integer]"}, {FORMAT_INFO_16INTEGER, "[16bit integer]"}, {0, NULL} }; #define SAMPLE_RATE_USER_SPECIFIED 0 #define SAMPLE_RATE_8K 1 #define SAMPLE_RATE_16K 2 #define SAMPLE_RATE_32K 3 #define SAMPLE_RATE_44K1 4 #define SAMPLE_RATE_48K 5 #define SAMPLE_RATE_88K2 6 #define SAMPLE_RATE_96K 7 #define SAMPLE_RATE_176K4 8 #define SAMPLE_RATE_192K 9 #define SAMPLE_RATE_16RPM 10 #define SAMPLE_RATE_33RPM3 11 #define SAMPLE_RATE_33RPM3_REV 12 #define SAMPLE_RATE_45RPM 13 #define SAMPLE_RATE_78RPM 14 #define SAMPLE_RATE_RESERVED 15 static const value_string sample_rate_type_vals [] = { {SAMPLE_RATE_USER_SPECIFIED, "User specified"}, {SAMPLE_RATE_8K, "[8kHz]"}, {SAMPLE_RATE_16K, "[16kHz]"}, {SAMPLE_RATE_32K, "[32kHz]"}, {SAMPLE_RATE_44K1, "[44.1kHz]"}, {SAMPLE_RATE_48K, "[48kHz]"}, {SAMPLE_RATE_88K2, "[88.2kHz]"}, {SAMPLE_RATE_96K, "[96kHz]"}, {SAMPLE_RATE_176K4, "[176.4kHz]"}, {SAMPLE_RATE_192K, "[192kHz]"}, {SAMPLE_RATE_16RPM, "[16 RPM]"}, {SAMPLE_RATE_33RPM3, "[33 1/3 RPM]"}, {SAMPLE_RATE_33RPM3_REV, "[33 1/3 RPM In Reverse]"}, {SAMPLE_RATE_45RPM, "[45RPM]"}, {SAMPLE_RATE_78RPM, "[78RPM]"}, {SAMPLE_RATE_RESERVED, "Reserved"}, {0, NULL} }; #define CLOCK_FREQUENCY_OTHER 0 #define CLOCK_FREQUENCY_8K 1 #define CLOCK_FREQUENCY_16K 2 #define CLOCK_FREQUENCY_32K 3 #define CLOCK_FREQUENCY_44K1 4 #define CLOCK_FREQUENCY_88K2 5 #define CLOCK_FREQUENCY_176K4 6 #define CLOCK_FREQUENCY_48K 7 #define CLOCK_FREQUENCY_96K 8 #define CLOCK_FREQUENCY_192K 9 static const value_string clock_frequency_type_vals [] = { {CLOCK_FREQUENCY_OTHER, "Other Nominal Frequency"}, {CLOCK_FREQUENCY_8K, "[8kHz]"}, {CLOCK_FREQUENCY_16K, "[16kHz]"}, {CLOCK_FREQUENCY_32K, "[32kHz]"}, {CLOCK_FREQUENCY_44K1, "[44.1kHz]"}, {CLOCK_FREQUENCY_88K2, "[88.2kHz]"}, {CLOCK_FREQUENCY_176K4, "[176.4kHz]"}, {CLOCK_FREQUENCY_48K, "[48kHz]"}, {CLOCK_FREQUENCY_96K, "[96kHz]"}, {CLOCK_FREQUENCY_192K, "[192kHz]"}, {0, NULL} }; #define CLOCK_MULTIPLIER_0 0 #define CLOCK_MULTIPLIER_1 1 #define CLOCK_MULTIPLIER_2 2 #define CLOCK_MULTIPLIER_3 3 #define CLOCK_MULTIPLIER_4 4 static const value_string clock_multiplier_type_vals [] = { {CLOCK_MULTIPLIER_0, "[1.0]"}, {CLOCK_MULTIPLIER_1, "[1/1.001]"}, {CLOCK_MULTIPLIER_2, "[1.001]"}, {CLOCK_MULTIPLIER_3, "[24/25]"}, {CLOCK_MULTIPLIER_4, "[25/24]"}, {0, NULL} }; #define CRF_TYPE_OTHER 0 #define CRF_TYPE_AUDIO 1 #define CRF_TYPE_VIDEO_FRAME_SYNC 2 #define CRF_TYPE_VIDEO_LINE_SYNC 3 #define CRF_TYPE_EXPERIMENTAL 0xffff static const value_string clock_reference_format_type_vals [] = { {CRF_TYPE_OTHER, "Other"}, {CRF_TYPE_AUDIO, "Audio Sample Timestamp"}, {CRF_TYPE_VIDEO_FRAME_SYNC, "Video Frame Sync Timestamp"}, {CRF_TYPE_VIDEO_LINE_SYNC, "Video Line Sync Timestamp"}, {CRF_TYPE_EXPERIMENTAL, "Experimental"}, {0, NULL} }; /**********************************************************/ /* Initialize the protocol and registered fields */ /**********************************************************/ /* 1722a audio */ static int proto_1722a = -1; static int hf_1722a_mrfield = -1; static int hf_1722a_tvfield = -1; static int hf_1722a_seqnum = -1; static int hf_1722a_tufield = -1; static int hf_1722a_stream_id = -1; static int hf_1722a_avbtp_timestamp = -1; static int hf_1722a_format_info = -1; static int hf_1722a_nominal_sample_rate = -1; static int hf_1722a_bit_depth = -1; static int hf_1722a_stream_data_length = -1; static int hf_1722a_sparse_timestamp = -1; static int hf_1722a_evtfield = -1; static int hf_1722a_channels_per_frame = -1; static int hf_1722a_data = -1; static int hf_1722a_sample = -1; /* CRF */ static int hf_1722a_crf_type = -1; static int hf_1722a_clock_frequency = -1; static int hf_1722a_clock_multiplier = -1; static int hf_1722a_timestamp_interval = -1; static int hf_1722a_crf_timestamp = -1; static int hf_1722a_crf_timestamp_data = -1; /* Initialize the subtree pointers */ static int ett_1722a = -1; static int ett_1722a_audio = -1; static int ett_1722a_sample = -1; static int ett_1722a_crf_timestamp = -1; static expert_field ei_sample_width = EI_INIT; static expert_field ei_channels_per_frame = EI_INIT; static expert_field ei_unknown_parameter = EI_INIT; static expert_field ei_format_info = EI_INIT; static expert_field ei_clock_reference_type = EI_INIT; static int dissect_1722a (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { proto_item *ti = NULL; proto_tree *ieee1722a_tree = NULL; proto_tree *audio_tree = NULL; proto_tree *sample_tree = NULL; proto_tree *timestamp_tree = NULL; gint offset = 0; guint16 datalen = 0; guint16 channels_per_frame = 0; guint8 subtype = 0; gint sample_width = 0; int i, j; col_set_str(pinfo->cinfo, COL_PROTOCOL, "IEEE1722a"); col_set_str(pinfo->cinfo, COL_INFO, "AVB Transportation Protocol"); if (tree) { ti = proto_tree_add_item(tree, proto_1722a, tvb, 0, -1, ENC_NA); ieee1722a_tree = proto_item_add_subtree(ti, ett_1722a); } /* Version field ends the common AVTPDU. Now parse the specfic packet type */ subtype = tvb_get_guint8(tvb, IEEE_1722A_CD_OFFSET); subtype &= IEEE_1722A_SUBTYPE_MASK; switch (subtype) { case IEEE_1722A_SUBTYPE_AVTP_AUDIO: if (tree) { proto_tree_add_item(ieee1722a_tree, hf_1722a_mrfield, tvb, IEEE_1722A_VERSION_OFFSET, 1, ENC_BIG_ENDIAN); proto_tree_add_item(ieee1722a_tree, hf_1722a_tvfield, tvb, IEEE_1722A_VERSION_OFFSET, 1, ENC_BIG_ENDIAN); proto_tree_add_item(ieee1722a_tree, hf_1722a_seqnum, tvb, IEEE_1722A_SEQ_NUM_OFFSET, 1, ENC_BIG_ENDIAN); proto_tree_add_item(ieee1722a_tree, hf_1722a_tufield, tvb, IEEE_1722A_TU_FIELD_OFFSET, 1, ENC_BIG_ENDIAN); proto_tree_add_item(ieee1722a_tree, hf_1722a_stream_id, tvb, IEEE_1722A_STREAM_ID_OFFSET, 8, ENC_BIG_ENDIAN); proto_tree_add_item(ieee1722a_tree, hf_1722a_avbtp_timestamp, tvb, IEEE_1722A_TIMESTAMP_OFFSET, 4, ENC_BIG_ENDIAN); proto_tree_add_item(ieee1722a_tree, hf_1722a_format_info, tvb, IEEE_1722A_FORMAT_INFO_OFFSET, 1, ENC_BIG_ENDIAN); proto_tree_add_item(ieee1722a_tree, hf_1722a_nominal_sample_rate, tvb, IEEE_1722A_NOM_SAMPLE_RATE_OFFSET, 1, ENC_BIG_ENDIAN); proto_tree_add_item(ieee1722a_tree, hf_1722a_channels_per_frame, tvb, IEEE_1722A_CHANNELS_PER_FRAME_OFFSET, 2, ENC_BIG_ENDIAN); proto_tree_add_item(ieee1722a_tree, hf_1722a_bit_depth, tvb, IEEE_1722A_BIT_DEPTH_OFFSET, 1, ENC_BIG_ENDIAN); ti = proto_tree_add_item(ieee1722a_tree, hf_1722a_stream_data_length, tvb, IEEE_1722A_STREAM_DATA_LENGTH_OFFSET, 2, ENC_BIG_ENDIAN); proto_item_append_text(ti, " bytes"); proto_tree_add_item(ieee1722a_tree, hf_1722a_sparse_timestamp, tvb, IEEE_1722A_SPARSE_TIMESTAMP_OFFSET, 1, ENC_BIG_ENDIAN); proto_tree_add_item(ieee1722a_tree, hf_1722a_evtfield, tvb, IEEE_1722A_EVT_OFFSET, 1, ENC_BIG_ENDIAN); } /* Make the Audio sample tree. */ datalen = tvb_get_ntohs(tvb, IEEE_1722A_STREAM_DATA_LENGTH_OFFSET); /* Length of audio data in bytes */ ti = proto_tree_add_item(ieee1722a_tree, hf_1722a_data, tvb, IEEE_1722A_DATA_OFFSET, datalen, ENC_NA); audio_tree = proto_item_add_subtree(ti, ett_1722a_audio); /* Need to get the offset of where the audio data starts */ offset = IEEE_1722A_DATA_OFFSET; channels_per_frame = tvb_get_ntohs(tvb, IEEE_1722A_CHANNELS_PER_FRAME_OFFSET); channels_per_frame &= IEEE_1722A_CHANNEL_PER_FRAME_MASK; switch (tvb_get_guint8(tvb, IEEE_1722A_FORMAT_INFO_OFFSET)) { case 0: break; case 1: sample_width = 32; break; case 2: sample_width = 32; break; case 3: sample_width = 24; break; case 4: sample_width = 16; break; default: expert_add_info(pinfo, ti, &ei_format_info); break; } if (sample_width == 0) { expert_add_info(pinfo, ti, &ei_sample_width); } else { if (channels_per_frame == 0) { expert_add_info(pinfo, ti, &ei_channels_per_frame); } else { if (tree) { /* Loop through all samples and add them to the audio tree. */ for (j = 0; j < ((datalen * 8) / (channels_per_frame * sample_width)); j++) { sample_tree = proto_tree_add_subtree_format(audio_tree, tvb, offset, 1, ett_1722a_sample, &ti, "Sample Chunk %d", j); for (i = 0; i < channels_per_frame; i++) { ti = proto_tree_add_item(sample_tree, hf_1722a_sample, tvb, offset, sample_width / 8, ENC_NA); proto_item_prepend_text(ti, "Channel: %d ", i); offset += (sample_width / 8); } } } } } break; case IEEE_1722A_SUBTYPE_CRF: proto_tree_add_item(ieee1722a_tree, hf_1722a_mrfield, tvb, IEEE_1722A_VERSION_OFFSET, 1, ENC_BIG_ENDIAN); proto_tree_add_item(ieee1722a_tree, hf_1722a_tvfield, tvb, IEEE_1722A_VERSION_OFFSET, 1, ENC_BIG_ENDIAN); proto_tree_add_item(ieee1722a_tree, hf_1722a_seqnum, tvb, IEEE_1722A_SEQ_NUM_OFFSET, 1, ENC_BIG_ENDIAN); proto_tree_add_item(ieee1722a_tree, hf_1722a_tufield, tvb, IEEE_1722A_TU_FIELD_OFFSET, 1, ENC_BIG_ENDIAN); proto_tree_add_item(ieee1722a_tree, hf_1722a_stream_id, tvb, IEEE_1722A_STREAM_ID_OFFSET, 8, ENC_BIG_ENDIAN); ti = proto_tree_add_item(ieee1722a_tree, hf_1722a_stream_data_length, tvb, IEEE_1722A_STREAM_DATA_LENGTH_OFFSET, 2, ENC_BIG_ENDIAN); proto_item_append_text(ti, " bytes"); proto_tree_add_item(ieee1722a_tree, hf_1722a_crf_type, tvb, IEEE_1722A_CRF_TYPE_OFFSET, 2, ENC_BIG_ENDIAN); switch (tvb_get_ntohs(tvb, IEEE_1722A_CRF_TYPE_OFFSET)) { /* Audio Timestamp Case */ case IEEE_1722A_CRF_AUDIO_SAMPLE_TIMESTAMP: if (tree) { proto_tree_add_item(ieee1722a_tree, hf_1722a_clock_frequency, tvb, IEEE_1722A_CRF_CLOCK_FREQUENCY_OFFSET, 1, ENC_BIG_ENDIAN); proto_tree_add_item(ieee1722a_tree, hf_1722a_clock_multiplier, tvb, IEEE_1722A_CRF_CLOCK_MULTIPLIER_OFFSET, 1, ENC_BIG_ENDIAN); proto_tree_add_item(ieee1722a_tree, hf_1722a_timestamp_interval, tvb, IEEE_1722A_CRF_TIMESTAMP_INTERVAL_OFFSET, 2, ENC_BIG_ENDIAN); /* Make the Timestamp tree. */ datalen = tvb_get_ntohs(tvb, IEEE_1722A_STREAM_DATA_LENGTH_OFFSET); datalen = datalen - 6; /* remove type field and type header */ ti = proto_tree_add_item(ieee1722a_tree, hf_1722a_crf_timestamp, tvb, IEEE_1722A_CRF_AUDIO_TIMESTAMP_OFFSET, datalen, ENC_NA); timestamp_tree = proto_item_add_subtree(ti, ett_1722a_crf_timestamp); offset = IEEE_1722A_CRF_AUDIO_TIMESTAMP_OFFSET; /* Loop through all timestamps and add them to the timestamp tree. */ for (j = 0; j < (datalen / IEEE_1722A_CRF_TIMESTAMP_SIZE); j++) { proto_tree_add_item(timestamp_tree, hf_1722a_crf_timestamp_data, tvb, offset, IEEE_1722A_CRF_TIMESTAMP_SIZE, ENC_BIG_ENDIAN); offset += IEEE_1722A_CRF_TIMESTAMP_SIZE; } } break; default: expert_add_info(pinfo, ti, &ei_clock_reference_type); break; } break; default: /* This dissector only registers for subtype 0x02 (AVTP Audio Format) and 0x05 (Clock Reference Format) which will be handled above. So we won`t enter the default path. */ DISSECTOR_ASSERT_NOT_REACHED(); break; } return tvb_captured_length(tvb); } /* Register the protocol with Wireshark */ void proto_register_1722a (void) { expert_module_t *expert_1722a; static hf_register_info hf[] = { { &hf_1722a_mrfield, { "AVBTP Media Clock Restart", "ieee1722a.mrfield", FT_BOOLEAN, 8, NULL, IEEE_1722A_MR_MASK, NULL, HFILL } }, { &hf_1722a_tvfield, { "Source Timestamp Valid", "ieee1722a.tvfield", FT_BOOLEAN, 8, NULL, IEEE_1722A_TV_MASK, NULL, HFILL } }, { &hf_1722a_seqnum, { "Sequence Number", "ieee1722a.seqnum", FT_UINT8, BASE_DEC, NULL, 0x00, NULL, HFILL } }, { &hf_1722a_tufield, { "AVBTP Timestamp Uncertain", "ieee1722a.tufield", FT_BOOLEAN, 8, NULL, IEEE_1722A_TU_MASK, NULL, HFILL } }, { &hf_1722a_stream_id, { "Stream ID", "ieee1722a.stream_id", FT_UINT64, BASE_HEX, NULL, 0x00, NULL, HFILL } }, { &hf_1722a_avbtp_timestamp, { "AVBTP Timestamp", "ieee1722a.avbtp_timestamp", FT_UINT32, BASE_DEC, NULL, 0x00, NULL, HFILL } }, { &hf_1722a_format_info, { "Format Info", "ieee1722a.format_info", FT_UINT8, BASE_HEX, VALS(format_info_vals), 0x00, NULL, HFILL } }, { &hf_1722a_nominal_sample_rate, { "Nominal Sample Rate", "ieee1722a.nominal_sample_rate", FT_UINT8, BASE_HEX, VALS(sample_rate_type_vals), IEEE_1722A_NOM_SAMPLE_RATE_MASK, NULL, HFILL } }, { &hf_1722a_bit_depth, { "Bit Depth", "ieee1722a.bit_depth", FT_UINT8, BASE_HEX, NULL, 0x00, NULL, HFILL } }, { &hf_1722a_stream_data_length, { "Stream Data Length", "ieee1722a.stream_data_len", FT_UINT16, BASE_DEC, NULL, 0x00, NULL, HFILL } }, { &hf_1722a_sparse_timestamp, { "Sparse Timestamp Mode", "ieee1722a.sparse_timestamp", FT_BOOLEAN, 8, NULL, IEEE_1722A_SP_MASK, NULL, HFILL } }, { &hf_1722a_evtfield, { "EVT", "ieee1722a.evtfield", FT_UINT8, BASE_HEX, NULL, IEEE_1722A_EVT_MASK, NULL, HFILL } }, { &hf_1722a_channels_per_frame, { "Channels per Frame", "ieee1722a.channels_per_frame", FT_UINT16, BASE_DEC, NULL, IEEE_1722A_CHANNEL_PER_FRAME_MASK, NULL, HFILL } }, { &hf_1722a_data, { "Audio Data", "ieee1722a.data", FT_BYTES, BASE_NONE, NULL, 0x00, NULL, HFILL } }, { &hf_1722a_sample, { "Sample Data", "ieee1722a.data.sample.sampledata", FT_BYTES, BASE_NONE, NULL, 0x00, NULL, HFILL } }, { &hf_1722a_crf_type, { "Type", "ieee1722a.type", FT_UINT16, BASE_HEX, VALS(clock_reference_format_type_vals), 0x00, NULL, HFILL } }, { &hf_1722a_clock_frequency, { "Clock Frequency", "ieee1722a.clock_frequency", FT_UINT8, BASE_HEX, VALS(clock_frequency_type_vals), 0x00, NULL, HFILL } }, { &hf_1722a_clock_multiplier, { "Clock Multiplier", "ieee1722a.clock_multiplier", FT_UINT8, BASE_HEX, VALS(clock_multiplier_type_vals), 0x00, NULL, HFILL } }, { &hf_1722a_timestamp_interval, { "Timestamp Interval", "ieee1722a.timestamp_interval", FT_UINT16, BASE_DEC, NULL, 0x00, NULL, HFILL } }, { &hf_1722a_crf_timestamp, { "Timestamps", "ieee1722a.crf_timestamps", FT_BYTES, BASE_NONE, NULL, 0x00, NULL, HFILL } }, { &hf_1722a_crf_timestamp_data, { "Timestamp Data", "ieee1722a.crf_timestamp_data", FT_UINT64, BASE_HEX, NULL, 0x00, NULL, HFILL } } }; static ei_register_info ei[] = { { &ei_sample_width, { "1722a.expert.sample_width_zero", PI_PROTOCOL, PI_WARN, "Wrong value for Sample Width", EXPFILL }}, { &ei_channels_per_frame, { "1722a.expert.channels_per_frame_zero", PI_PROTOCOL, PI_WARN, "Wrong value for parameter Channels per Frame", EXPFILL }}, { &ei_unknown_parameter, { "1722a.expert.unknown_parameter", PI_PROTOCOL, PI_WARN, "Unknown parameter", EXPFILL }}, { &ei_format_info, { "1722a.expert.format_info", PI_PROTOCOL, PI_WARN, "Format Info Value Reserved", EXPFILL }}, { &ei_clock_reference_type, { "1722a.expert.clock_reference_format_type", PI_PROTOCOL, PI_WARN, "The CRF type is not supported", EXPFILL }} }; static gint *ett[] = { &ett_1722a, &ett_1722a_audio, &ett_1722a_sample, &ett_1722a_crf_timestamp }; /* Register the protocol name and description */ proto_1722a = proto_register_protocol( "IEEE 1722a Protocol", /* name */ "1722A", /* short name */ "1722a" /* abbrev */ ); /* Required function calls to register the header fields and subtrees used */ proto_register_field_array(proto_1722a, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); expert_1722a = expert_register_protocol(proto_1722a); expert_register_field_array(expert_1722a, ei, array_length(ei)); } void proto_reg_handoff_1722a(void) { dissector_handle_t avb1722a_handle; avb1722a_handle = create_dissector_handle(dissect_1722a, proto_1722a); dissector_add_uint("ieee1722.subtype", IEEE_1722A_SUBTYPE_AVTP_AUDIO, avb1722a_handle); dissector_add_uint("ieee1722.subtype", IEEE_1722A_SUBTYPE_CRF, avb1722a_handle); } /* * Editor modelines - http://www.wireshark.org/tools/modelines.html * * Local variables: * c-basic-offset: 4 * tab-width: 8 * indent-tabs-mode: nil * End: * * vi: set shiftwidth=4 tabstop=8 expandtab: * :indentSize=4:tabSize=8:noTabs=true: */