/* packet-ieee1722.c * Routines for AVB-TP (Audio Video Bridging - Transport Protocol) dissection * Copyright 2010, Torrey Atcitty * Dave Olsen * Levi Pearson * * Copyright 2011, Thomas Bottom * * Copyright 2016, Andreas Leibold * This file contains all 1722 dissectors. * * 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 1722 Protocol specification can be found at the following: * http://grouper.ieee.org/groups/1722/ * */ #include "config.h" #include #include #include void proto_register_1722(void); void proto_reg_handoff_1722(void); void proto_register_1722_crf(void); void proto_reg_handoff_1722_crf(void); void proto_register_1722_aaf(void); void proto_reg_handoff_1722_aaf(void); void proto_register_1722_61883(void); void proto_reg_handoff_1722_61883(void); /* Bit Field Masks */ #define IEEE_1722_SV_MASK 0x80 #define IEEE_1722_VER_MASK 0x70 #define IEEE_1722_SUBTYPE_MASK 0x7F /**********************************************************/ /* Initialize the protocol and registered fields */ /**********************************************************/ static int proto_1722_crf = -1; static int hf_1722_crf_mrfield = -1; static int hf_1722_crf_fsfield = -1; static int hf_1722_crf_tufield = -1; static int hf_1722_crf_seqnum = -1; static int hf_1722_crf_type = -1; static int hf_1722_crf_stream_id = -1; static int hf_1722_crf_pull = -1; static int hf_1722_crf_base_frequency = -1; static int hf_1722_crf_data_length = -1; static int hf_1722_crf_timestamp_interval = -1; static int hf_1722_crf_timestamp_data = -1; static int hf_1722_crf_timestamp = -1; static int proto_1722_aaf = -1; static int hf_1722_aaf_mrfield = -1; static int hf_1722_aaf_tvfield = -1; static int hf_1722_aaf_seqnum = -1; static int hf_1722_aaf_tufield = -1; static int hf_1722_aaf_stream_id = -1; static int hf_1722_aaf_avtp_timestamp = -1; static int hf_1722_aaf_format = -1; static int hf_1722_aaf_nominal_sample_rate = -1; static int hf_1722_aaf_bit_depth = -1; static int hf_1722_aaf_stream_data_length = -1; static int hf_1722_aaf_sparse_timestamp = -1; static int hf_1722_aaf_evtfield = -1; static int hf_1722_aaf_channels_per_frame = -1; static int hf_1722_aaf_data = -1; static int hf_1722_aaf_sample = -1; static int proto_1722 = -1; static int hf_1722_subtype = -1; static int hf_1722_svfield = -1; static int hf_1722_verfield = -1; static int proto_1722_61883 = -1; static int hf_1722_61883_mrfield = -1; static int hf_1722_61883_gvfield = -1; static int hf_1722_61883_tvfield = -1; static int hf_1722_61883_seqnum = -1; static int hf_1722_61883_tufield = -1; static int hf_1722_61883_stream_id = -1; static int hf_1722_61883_avtp_timestamp = -1; static int hf_1722_61883_gateway_info = -1; static int hf_1722_61883_stream_data_length = -1; static int hf_1722_61883_tag = -1; static int hf_1722_61883_channel = -1; static int hf_1722_61883_tcode = -1; static int hf_1722_61883_sy = -1; static int hf_1722_61883_cip_qi1 = -1; static int hf_1722_61883_cip_sid = -1; static int hf_1722_61883_cip_dbs = -1; static int hf_1722_61883_cip_fn = -1; static int hf_1722_61883_cip_qpc = -1; static int hf_1722_61883_cip_sph = -1; static int hf_1722_61883_cip_dbc = -1; static int hf_1722_61883_cip_qi2 = -1; static int hf_1722_61883_cip_fmt = -1; static int hf_1722_61883_cip_fdf = -1; static int hf_1722_61883_cip_syt = -1; static int hf_1722_61883_audio_data = -1; static int hf_1722_61883_label = -1; static int hf_1722_61883_sample = -1; static int hf_1722_61883_video_data = -1; static int hf_1722_61883_source_packet_header_timestamp = -1; /* Initialize the subtree pointers */ static int ett_1722_crf = -1; static int ett_1722_crf_timestamp = -1; static int ett_1722_aaf = -1; static int ett_1722_aaf_audio = -1; static int ett_1722_aaf_sample = -1; static int ett_1722_61883 = -1; static int ett_1722_61883_audio = -1; static int ett_1722_61883_sample = -1; static int ett_1722 = -1; static expert_field ei_clock_reference_type = EI_INIT; static expert_field ei_crf_datalen = EI_INIT; static expert_field ei_sample_width = EI_INIT; static expert_field ei_channels_per_frame = EI_INIT; static expert_field ei_format_reserved = EI_INIT; static expert_field ei_1722_61883_incorrect_tag = EI_INIT; static expert_field ei_1722_61883_incorrect_tcode = EI_INIT; static expert_field ei_1722_61883_incorrect_qi1 = EI_INIT; static expert_field ei_1722_61883_incorrect_qpc = EI_INIT; static expert_field ei_1722_61883_incorrect_qi2 = EI_INIT; static expert_field ei_1722_61883_unknown_format = EI_INIT; static dissector_table_t avb_dissector_table; #define IEEE_1722_SUBTYPE_61883 0x00 #define IEEE_1722_SUBTYPE_AAF 0x02 #define IEEE_1722_SUBTYPE_CRF 0x04 /* 1722 CRF */ #define IEEE_1722_MR_MASK 0x08 #define IEEE_1722_FS_MASK 0x02 #define IEEE_1722_TU_MASK 0x01 #define IEEE_1722_PULL_MASK 0xe0000000 #define IEEE_1722_BASE_FREQUENCY_MASK 0x1fffffff #define IEEE_1722_CRF_TIMESTAMP_SIZE 8 /* size of the CRF timestamp in bytes */ #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 #define CLOCK_MULTIPLIER_5 5 static const value_string pull_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]"}, {CLOCK_MULTIPLIER_5, "[1/8]"}, {0, NULL} }; #define CRF_TYPE_USER 0 #define CRF_TYPE_AUDIO_SAMPLE 1 #define CRF_TYPE_VIDEO_FRAME_SYNC 2 #define CRF_TYPE_VIDEO_LINE_SYNC 3 #define CRF_TYPE_MACHINE_CYCLE 4 static const value_string type_vals [] = { {CRF_TYPE_USER, "User Specified"}, {CRF_TYPE_AUDIO_SAMPLE, "Audio Sample Timestamp"}, {CRF_TYPE_VIDEO_FRAME_SYNC, "Video Frame Sync Timestamp"}, {CRF_TYPE_VIDEO_LINE_SYNC, "Video Line Sync Timestamp"}, {CRF_TYPE_MACHINE_CYCLE, "Machine Cycle Timestamp"}, {0, NULL} }; static const range_string ieee1722_subtype_range_vals[] = { { 0,0, "IEC 61883/IIDC over AVTP" }, { 1,1, "MMA payload over AVTP" }, { 2,2, "Simple Audio Format" }, { 3,3, "Simple Video Format" }, { 5,5, "CRF" }, { 6,0x7a, "Reserved for future protocols " }, { 0x7a,0x7a, "AVDECC Discovery Protocol" }, { 0x7b,0x7b, "AVDECC Enumeration and Control Protocol" }, { 0x7c,0x7c, "AVDECC Connection Management Protocol" }, { 0x7d,0x7d, "MAAP" }, { 0x7f,0x7f, "Experimental" }, { 0,0, NULL } }; static int dissect_1722_crf (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { proto_item *ti; proto_tree *ieee1722_crf_tree; proto_tree *timestamp_tree; gint offset = 1; guint32 datalen; guint j; const gint *fields[] = { &hf_1722_crf_mrfield, &hf_1722_crf_fsfield, &hf_1722_crf_tufield, NULL }; const gint *pull_frequency[] = { &hf_1722_crf_pull, &hf_1722_crf_base_frequency, NULL }; ti = proto_tree_add_item(tree, proto_1722_crf, tvb, 0, -1, ENC_NA); ieee1722_crf_tree = proto_item_add_subtree(ti, ett_1722_crf); proto_tree_add_bitmask_list(ieee1722_crf_tree, tvb, offset, 1, fields, ENC_NA); offset += 1; proto_tree_add_item(ieee1722_crf_tree, hf_1722_crf_seqnum, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_tree_add_item(ieee1722_crf_tree, hf_1722_crf_type, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_tree_add_item(ieee1722_crf_tree, hf_1722_crf_stream_id, tvb, offset, 8, ENC_BIG_ENDIAN); offset += 8; proto_tree_add_bitmask_list(ieee1722_crf_tree, tvb, offset, 4, pull_frequency, ENC_NA); offset += 4; ti = proto_tree_add_item_ret_uint(ieee1722_crf_tree, hf_1722_crf_data_length, tvb, offset, 2, ENC_BIG_ENDIAN, &datalen); proto_item_append_text(ti, " bytes"); offset += 2; proto_tree_add_item(ieee1722_crf_tree, hf_1722_crf_timestamp_interval, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; /* Make the Timestamp tree. */ ti = proto_tree_add_item(ieee1722_crf_tree, hf_1722_crf_timestamp_data, tvb, offset, datalen, ENC_NA); timestamp_tree = proto_item_add_subtree(ti, ett_1722_crf_timestamp); if (datalen%8) { expert_add_info(pinfo, ti, &ei_crf_datalen); } else { /* Loop through all timestamps and add them to the timestamp tree. */ for (j = 0; j < (datalen / IEEE_1722_CRF_TIMESTAMP_SIZE); j++) { ti = proto_tree_add_item(timestamp_tree, hf_1722_crf_timestamp, tvb, offset, IEEE_1722_CRF_TIMESTAMP_SIZE, ENC_BIG_ENDIAN); proto_item_prepend_text(ti, "Timestamp %d ", j); offset += IEEE_1722_CRF_TIMESTAMP_SIZE; } } return tvb_captured_length(tvb); } /* Bit Field Masks */ /* 1722 AAF */ #define IEEE_1722_MR_MASK 0x08 #define IEEE_1722_TV_MASK 0x01 #define IEEE_1722_SEQ_NUM_MASK 0x00 #define IEEE_1722_TU_MASK 0x01 #define IEEE_1722_STREAM_ID_MASK 0x00 #define IEEE_1722_TIMESTAMP_MASK 0x00 #define IEEE_1722_FORMAT_MASK 0x00 #define IEEE_1722_NOM_SAMPLE_RATE_MASK 0xf000 #define IEEE_1722_CHANNEL_PER_FRAME_MASK 0x03ff #define IEEE_1722_BIT_DEPTH_MASK 0x00 #define IEEE_1722_STREAM_DATA_LENGTH_MASK 0x00 #define IEEE_1722_SP_MASK 0x10 #define IEEE_1722_EVT_MASK 0x0f #define IEEE_1722_DATA_MASK 0x00 #define IEEE_1722_SAMPLE_MASK 0x00 #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 #define FORMAT_INFO_32AES3 5 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]"}, {FORMAT_INFO_32AES3, "[32bit AES3]"}, {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_24K 10 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_24K, "[24kHz]"}, {0, NULL} }; #define SPARSE_TIMESTAMP_NORMAL_OPERATION 0 #define SPARSE_TIMESTAMP_SPARSE_MODE 1 static const value_string sparse_mode_vals [] = { {SPARSE_TIMESTAMP_NORMAL_OPERATION, "[Normal operation, timestamp in every AAF AVTPDU]"}, {SPARSE_TIMESTAMP_SPARSE_MODE, "[Sparse mode, timestamp in every eighth AAF AVTPDU]"}, {0, NULL} }; static int dissect_1722_aaf (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { proto_item *ti; proto_tree *ieee1722_aaf_tree; proto_tree *audio_tree; proto_tree *sample_tree; gint offset = 1; guint32 datalen; guint16 channels_per_frame = 0; gint sample_width = 0; guint32 format_offset; guint i, j; const gint *fields[] = { &hf_1722_aaf_mrfield, &hf_1722_aaf_tvfield, NULL }; const gint *fields2[] = { &hf_1722_aaf_nominal_sample_rate, &hf_1722_aaf_channels_per_frame, NULL }; const gint *fields3[] = { &hf_1722_aaf_sparse_timestamp, &hf_1722_aaf_evtfield, NULL }; ti = proto_tree_add_item(tree, proto_1722_aaf, tvb, 0, -1, ENC_NA); ieee1722_aaf_tree = proto_item_add_subtree(ti, ett_1722_aaf); proto_tree_add_bitmask_list(ieee1722_aaf_tree, tvb, offset, 1, fields, ENC_NA); offset += 1; proto_tree_add_item(ieee1722_aaf_tree, hf_1722_aaf_seqnum, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_tree_add_item(ieee1722_aaf_tree, hf_1722_aaf_tufield, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_tree_add_item(ieee1722_aaf_tree, hf_1722_aaf_stream_id, tvb, offset, 8, ENC_BIG_ENDIAN); offset += 8; proto_tree_add_item(ieee1722_aaf_tree, hf_1722_aaf_avtp_timestamp, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; ti = proto_tree_add_item_ret_uint(ieee1722_aaf_tree, hf_1722_aaf_format, tvb, offset, 1, ENC_BIG_ENDIAN, &format_offset); offset += 1; switch (format_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; case 5: sample_width = 32; break; default: expert_add_info(pinfo, ti, &ei_format_reserved); break; } proto_tree_add_bitmask_list(ieee1722_aaf_tree, tvb, offset, 2, fields2, ENC_BIG_ENDIAN); channels_per_frame = tvb_get_ntohs(tvb, offset) & IEEE_1722_CHANNEL_PER_FRAME_MASK; offset += 2; proto_tree_add_item(ieee1722_aaf_tree, hf_1722_aaf_bit_depth, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; ti = proto_tree_add_item_ret_uint(ieee1722_aaf_tree, hf_1722_aaf_stream_data_length, tvb, offset, 2, ENC_BIG_ENDIAN, &datalen); proto_item_append_text(ti, " bytes"); offset += 2; proto_tree_add_bitmask_list(ieee1722_aaf_tree, tvb, offset, 1, fields3, ENC_BIG_ENDIAN); offset += 2; /* Padding? */ /* Make the Audio sample tree. */ ti = proto_tree_add_item(ieee1722_aaf_tree, hf_1722_aaf_data, tvb, offset, datalen, ENC_NA); audio_tree = proto_item_add_subtree(ti, ett_1722_aaf_audio); 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 (audio_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_1722_aaf_sample, NULL, "Sample Chunk %d", j); for (i = 0; i < channels_per_frame; i++) { ti = proto_tree_add_item(sample_tree, hf_1722_aaf_sample, tvb, offset, sample_width / 8, ENC_NA); proto_item_prepend_text(ti, "Channel: %d ", i); offset += (sample_width / 8); } } } } } return tvb_captured_length(tvb); } /* Bit Field Masks */ #define IEEE_1722_MR_MASK 0x08 #define IEEE_1722_GV_MASK 0x02 #define IEEE_1722_TV_MASK 0x01 #define IEEE_1722_TU_MASK 0x01 #define IEEE_1722_TAG_MASK 0xc0 #define IEEE_1722_CHANNEL_MASK 0x3f #define IEEE_1722_TCODE_MASK 0xf0 #define IEEE_1722_SY_MASK 0x0f #define IEEE_1722_QI1_MASK 0xc0 #define IEEE_1722_SID_MASK 0x3f #define IEEE_1722_FN_MASK 0xc0 #define IEEE_1722_QPC_MASK 0x38 #define IEEE_1722_SPH_MASK 0x04 #define IEEE_1722_QI2_MASK 0xc0 #define IEEE_1722_FMT_MASK 0x3f #define IEEE_1722_CIP_HEADER_SIZE 8 #define IEEE_1722_61883_TAG_NO_CIP 0x00 #define IEEE_1722_61883_TAG_CIP 0x40 #define IEEE_1722_61883_CHANNEL_AVTP 31 #define IEEE_1722_61883_SID_AVTP 63 #define IEEE_1722_61883_4_LEN_SOURCE_PACKET 192 #define IEEE_1722_61883_4_LEN_SP_TIMESTAMP 4 #define TAG_NO_CIP_HEADER 0 #define TAG_CIP_HEADER 1 static const value_string tag_vals [] = { {TAG_NO_CIP_HEADER, "No CIP header included"}, {TAG_CIP_HEADER, "CIP header included"}, {0, NULL} }; #define IEEE_1722_61883_4 0x20 #define IEEE_1722_61883_6 0x10 static const value_string format_vals [] = { {IEEE_1722_61883_4, "IEC 61883-4: MPEG2-TS data transmission"}, {IEEE_1722_61883_6, "IEC 61883-6: Audio and music transmission protocol"}, {0, NULL} }; static int dissect_1722_61883(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { proto_item *ti; proto_tree *ieee1722_61883_tree; proto_tree *audio_tree; proto_tree *sample_tree; proto_tree *video_tree; gint offset = 1; guint8 dbs, tag, channel, tcode, cip_qi1, cip_sid, cip_qpc, cip_qi2, cip_fmt; guint32 datalen; guint db_size, numSourcePackets; guint i, j; const gint *fields[] = { &hf_1722_61883_mrfield, &hf_1722_61883_gvfield, &hf_1722_61883_tvfield, NULL }; ti = proto_tree_add_item(tree, proto_1722_61883, tvb, 0, -1, ENC_NA); ieee1722_61883_tree = proto_item_add_subtree(ti, ett_1722_61883); proto_tree_add_bitmask_list(ieee1722_61883_tree, tvb, offset, 1, fields, ENC_NA); offset += 1; proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_seqnum, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_tufield, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_stream_id, tvb, offset, 8, ENC_BIG_ENDIAN); offset += 8; proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_avtp_timestamp, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_gateway_info, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; ti = proto_tree_add_item_ret_uint(ieee1722_61883_tree, hf_1722_61883_stream_data_length, tvb, offset, 2, ENC_BIG_ENDIAN, &datalen); proto_item_append_text(ti, " bytes"); offset += 2; /* tag field defines if CIP header is included or not */ ti = proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_tag, tvb, offset, 1, ENC_BIG_ENDIAN); tag = tvb_get_guint8(tvb, offset) & IEEE_1722_TAG_MASK; if (tag > 0x40) { expert_add_info(pinfo, ti, &ei_1722_61883_incorrect_tag); } ti = proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_channel, tvb, offset, 1, ENC_BIG_ENDIAN); channel = tvb_get_guint8(tvb, offset) & IEEE_1722_CHANNEL_MASK; if (channel != IEEE_1722_61883_CHANNEL_AVTP) { proto_item_append_text(ti, ": Originating Source ID from an IEEE 1394 serial bus"); } else { proto_item_append_text(ti, ": Originating source is on AVTP network (native AVTP)"); } offset += 1; ti = proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_tcode, tvb, offset, 1, ENC_BIG_ENDIAN); tcode = tvb_get_guint8(tvb, offset) & IEEE_1722_TCODE_MASK; if (tcode != 0xa0) { expert_add_info(pinfo, ti, &ei_1722_61883_incorrect_tcode); } proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_sy, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; switch (tag) { case IEEE_1722_61883_TAG_NO_CIP: proto_item_prepend_text(ti, "IIDC 1394 video payload:"); break; case IEEE_1722_61883_TAG_CIP: ti = proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_cip_qi1, tvb, offset, 1, ENC_BIG_ENDIAN); cip_qi1 = tvb_get_guint8(tvb, offset) & IEEE_1722_QI1_MASK; if (cip_qi1 != 0) { expert_add_info(pinfo, ti, &ei_1722_61883_incorrect_qi1); } ti = proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_cip_sid, tvb, offset, 1, ENC_BIG_ENDIAN); cip_sid = tvb_get_guint8(tvb, offset) & IEEE_1722_SID_MASK; if (cip_sid != IEEE_1722_61883_SID_AVTP) { proto_item_append_text(ti, ": Originating Source ID from an IEEE 1394 serial bus"); } else { proto_item_append_text(ti, ": Originating source is on AVTP network"); } offset += 1; proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_cip_dbs, tvb, offset, 1, ENC_BIG_ENDIAN); dbs = tvb_get_guint8(tvb, offset); offset += 1; proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_cip_fn, tvb, offset, 1, ENC_BIG_ENDIAN); ti = proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_cip_qpc, tvb, offset, 1, ENC_BIG_ENDIAN); cip_qpc = tvb_get_guint8(tvb, offset) & IEEE_1722_QPC_MASK; if (cip_qpc != 0) { expert_add_info(pinfo, ti, &ei_1722_61883_incorrect_qpc); } proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_cip_sph, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_cip_dbc, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; ti = proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_cip_qi2, tvb, offset, 1, ENC_BIG_ENDIAN); cip_qi2 = tvb_get_guint8(tvb, offset) & IEEE_1722_QI2_MASK; if (cip_qi2 != 0x80) { expert_add_info(pinfo, ti, &ei_1722_61883_incorrect_qi2); } /* Check format field for 61883-4 MPEG-TS video or 61883-6 for audio */ ti = proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_cip_fmt, tvb, offset, 1, ENC_BIG_ENDIAN); cip_fmt = tvb_get_guint8(tvb, offset) & IEEE_1722_FMT_MASK; if ((cip_fmt != IEEE_1722_61883_6) && (cip_fmt != IEEE_1722_61883_4)) { expert_add_info(pinfo, ti, &ei_1722_61883_unknown_format); } offset += 1; proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_cip_fdf, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_cip_syt, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; switch (cip_fmt) { case IEEE_1722_61883_6: /* Calculate the remaining size by subtracting the CIP header size from the value in the packet data length field */ datalen -= IEEE_1722_CIP_HEADER_SIZE; if (dbs == 0) { db_size = 256; } else { db_size = dbs; } /* Make the Audio sample tree. */ ti = proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_audio_data, tvb, offset, datalen, ENC_NA); audio_tree = proto_item_add_subtree(ti, ett_1722_61883_audio); if (audio_tree) { /* Loop through all samples and add them to the audio tree. */ for (j = 0; j < (datalen / (db_size*4)); j++) { sample_tree = proto_tree_add_subtree_format(audio_tree, tvb, offset, 1, ett_1722_61883_sample, NULL, "Sample %d", j+1); for (i = 0; i < db_size; i++) { proto_tree_add_item(sample_tree, hf_1722_61883_label, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_tree_add_item(sample_tree, hf_1722_61883_sample, tvb, offset, 3, ENC_NA); offset += 3; } } } break; case IEEE_1722_61883_4: /* Make the video tree. */ ti = proto_tree_add_item(ieee1722_61883_tree, hf_1722_61883_video_data, tvb, offset, datalen, ENC_NA); video_tree = proto_item_add_subtree(ti, ett_1722_61883_audio); if (video_tree) { /* Loop through all packets and add them to the video tree. */ numSourcePackets = datalen / IEEE_1722_61883_4_LEN_SOURCE_PACKET; for (j = 0; j < numSourcePackets; j++) { proto_tree_add_item(video_tree, hf_1722_61883_source_packet_header_timestamp, tvb, offset, IEEE_1722_61883_4_LEN_SP_TIMESTAMP, ENC_BIG_ENDIAN); offset += IEEE_1722_61883_4_LEN_SP_TIMESTAMP; proto_tree_add_item(video_tree, hf_1722_61883_video_data, tvb, offset, (IEEE_1722_61883_4_LEN_SOURCE_PACKET - IEEE_1722_61883_4_LEN_SP_TIMESTAMP), ENC_NA); offset += (IEEE_1722_61883_4_LEN_SOURCE_PACKET - IEEE_1722_61883_4_LEN_SP_TIMESTAMP); } } break; default: break; } break; default: break; } return tvb_captured_length(tvb); } static int dissect_1722(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { proto_item *ti; proto_tree *ieee1722_tree; guint32 subtype; int offset = 0; const gint *fields[] = { &hf_1722_svfield, &hf_1722_verfield, NULL }; col_set_str(pinfo->cinfo, COL_PROTOCOL, "IEEE1722"); col_set_str(pinfo->cinfo, COL_INFO, "AVB Transportation Protocol"); ti = proto_tree_add_item(tree, proto_1722, tvb, 0, -1, ENC_NA); ieee1722_tree = proto_item_add_subtree(ti, ett_1722); proto_tree_add_item_ret_uint(ieee1722_tree, hf_1722_subtype, tvb, offset, 1, ENC_BIG_ENDIAN, &subtype); offset += 1; proto_tree_add_bitmask_list(ieee1722_tree, tvb, offset, 1, fields, ENC_NA); /* Version field ends the common AVTPDU. Now parse the specfic packet type */ /* call any registered subtype dissectors which use only the common AVTPDU (e.g. 1722.1, MAAP, 61883, AAF or CRF) */ if (dissector_try_uint(avb_dissector_table, subtype, tvb, pinfo, tree)) return tvb_captured_length(tvb); return tvb_captured_length(tvb); } void proto_register_1722_crf(void) { static hf_register_info hf[] = { { &hf_1722_crf_mrfield, { "Media Clock Restart", "crf.mrfield", FT_BOOLEAN, 8, NULL, IEEE_1722_MR_MASK, NULL, HFILL } }, { &hf_1722_crf_fsfield, { "Frame Sync", "crf.fsfield", FT_BOOLEAN, 8, NULL, IEEE_1722_FS_MASK, NULL, HFILL } }, { &hf_1722_crf_tufield, { "Timestamp Uncertain", "crf.tufield", FT_BOOLEAN, 8, NULL, IEEE_1722_TU_MASK, NULL, HFILL } }, { &hf_1722_crf_seqnum, { "Sequence Number", "crf.seqnum", FT_UINT8, BASE_DEC, NULL, 0x00, NULL, HFILL } }, { &hf_1722_crf_type, { "Type", "crf.type", FT_UINT8, BASE_HEX, VALS(type_vals), 0x00, NULL, HFILL } }, { &hf_1722_crf_stream_id, { "Stream ID", "crf.stream_id", FT_UINT64, BASE_HEX, NULL, 0x00, NULL, HFILL } }, { &hf_1722_crf_pull, { "Pull", "crf.pull", FT_UINT32, BASE_HEX, VALS(pull_vals), IEEE_1722_PULL_MASK, NULL, HFILL } }, { &hf_1722_crf_base_frequency, { "Base Frequency", "crf.base_frequency", FT_UINT32, BASE_DEC, NULL, IEEE_1722_BASE_FREQUENCY_MASK, NULL, HFILL } }, { &hf_1722_crf_data_length, { "Data Length", "crf.data_len", FT_UINT16, BASE_DEC, NULL, 0x00, NULL, HFILL } }, { &hf_1722_crf_timestamp_interval, { "Timestamp Interval", "crf.timestamp_interval", FT_UINT16, BASE_DEC, NULL, 0x00, NULL, HFILL } }, { &hf_1722_crf_timestamp_data, { "Timestamp Data", "crf.timestamp_data", FT_BYTES, BASE_NONE, NULL, 0x00, NULL, HFILL } }, { &hf_1722_crf_timestamp, { "Data", "crf.timestamp", FT_UINT64, BASE_HEX, NULL, 0x00, NULL, HFILL } } }; static ei_register_info ei[] = { { &ei_clock_reference_type, { "crf.expert.clock_reference_format_type", PI_PROTOCOL, PI_WARN, "The CRF type is not supported", EXPFILL }}, { &ei_crf_datalen, { "crf.expert.crf_datalen", PI_PROTOCOL, PI_WARN, "The CRF data length must be multiple of 8", EXPFILL }} }; static gint *ett[] = { &ett_1722_crf, &ett_1722_crf_timestamp }; expert_module_t *expert_1722_crf; /* Register the protocol name and description */ proto_1722_crf = proto_register_protocol("Clock Reference Format", "CRF", "crf"); /* Required function calls to register the header fields and subtrees used */ proto_register_field_array(proto_1722_crf, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); expert_1722_crf = expert_register_protocol(proto_1722_crf); expert_register_field_array(expert_1722_crf, ei, array_length(ei)); } void proto_reg_handoff_1722_crf(void) { dissector_handle_t avb1722_crf_handle; avb1722_crf_handle = create_dissector_handle(dissect_1722_crf, proto_1722_crf); dissector_add_uint("ieee1722.subtype", IEEE_1722_SUBTYPE_CRF, avb1722_crf_handle); } void proto_register_1722_aaf (void) { static hf_register_info hf[] = { { &hf_1722_aaf_mrfield, { "Media Clock Restart", "aaf.mrfield", FT_BOOLEAN, 8, NULL, IEEE_1722_MR_MASK, NULL, HFILL } }, { &hf_1722_aaf_tvfield, { "Source Timestamp Valid", "aaf.tvfield", FT_BOOLEAN, 8, NULL, IEEE_1722_TV_MASK, NULL, HFILL } }, { &hf_1722_aaf_seqnum, { "Sequence Number", "aaf.seqnum", FT_UINT8, BASE_DEC, NULL, IEEE_1722_SEQ_NUM_MASK, NULL, HFILL } }, { &hf_1722_aaf_tufield, { "Timestamp Uncertain", "aaf.tufield", FT_BOOLEAN, 8, NULL, IEEE_1722_TU_MASK, NULL, HFILL } }, { &hf_1722_aaf_stream_id, { "Stream ID", "aaf.stream_id", FT_UINT64, BASE_HEX, NULL, IEEE_1722_STREAM_ID_MASK, NULL, HFILL } }, { &hf_1722_aaf_avtp_timestamp, { "AVTP Timestamp", "aaf.avtp_timestamp", FT_UINT32, BASE_DEC, NULL, IEEE_1722_TIMESTAMP_MASK, NULL, HFILL } }, { &hf_1722_aaf_format, { "Format", "aaf.format_info", FT_UINT8, BASE_HEX, VALS(format_info_vals), IEEE_1722_FORMAT_MASK, NULL, HFILL } }, { &hf_1722_aaf_nominal_sample_rate, { "Nominal Sample Rate", "aaf.nominal_sample_rate", FT_UINT16, BASE_HEX, VALS(sample_rate_type_vals), IEEE_1722_NOM_SAMPLE_RATE_MASK, NULL, HFILL } }, { &hf_1722_aaf_channels_per_frame, { "Channels per Frame", "aaf.channels_per_frame", FT_UINT16, BASE_DEC, NULL, IEEE_1722_CHANNEL_PER_FRAME_MASK, NULL, HFILL } }, { &hf_1722_aaf_bit_depth, { "Bit Depth", "aaf.bit_depth", FT_UINT8, BASE_DEC, NULL, IEEE_1722_BIT_DEPTH_MASK, NULL, HFILL } }, { &hf_1722_aaf_stream_data_length, { "Stream Data Length", "aaf.stream_data_len", FT_UINT16, BASE_DEC, NULL, IEEE_1722_STREAM_DATA_LENGTH_MASK, NULL, HFILL } }, { &hf_1722_aaf_sparse_timestamp, { "Sparse Timestamp Mode", "aaf.sparse_timestamp", FT_UINT8, BASE_DEC, VALS(sparse_mode_vals), IEEE_1722_SP_MASK, NULL, HFILL } }, { &hf_1722_aaf_evtfield, { "EVT", "aaf.evtfield", FT_UINT8, BASE_HEX, NULL, IEEE_1722_EVT_MASK, NULL, HFILL } }, { &hf_1722_aaf_data, { "Audio Data", "aaf.data", FT_BYTES, BASE_NONE, NULL, IEEE_1722_DATA_MASK, NULL, HFILL } }, { &hf_1722_aaf_sample, { "Sample Data", "aaf.data.sample", FT_BYTES, BASE_NONE, NULL, IEEE_1722_SAMPLE_MASK, NULL, HFILL } } }; static ei_register_info ei[] = { { &ei_sample_width, { "aaf.expert.sample_width_zero", PI_PROTOCOL, PI_WARN, "Wrong value for sample width", EXPFILL }}, { &ei_channels_per_frame, { "aaf.expert.channels_per_frame_zero", PI_PROTOCOL, PI_WARN, "Wrong value for parameter channels per Frame", EXPFILL }}, { &ei_format_reserved, { "aaf.expert.format_reserved", PI_PROTOCOL, PI_WARN, "Reserved value", EXPFILL }} }; static gint *ett[] = { &ett_1722_aaf, &ett_1722_aaf_audio, &ett_1722_aaf_sample, }; expert_module_t *expert_1722_aaf; /* Register the protocol name and description */ proto_1722_aaf = proto_register_protocol("AVTP Audio Format", "AAF", "aaf"); /* Required function calls to register the header fields and subtrees used */ proto_register_field_array(proto_1722_aaf, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); expert_1722_aaf = expert_register_protocol(proto_1722_aaf); expert_register_field_array(expert_1722_aaf, ei, array_length(ei)); } void proto_reg_handoff_1722_aaf(void) { dissector_handle_t avb1722_aaf_handle; avb1722_aaf_handle = create_dissector_handle(dissect_1722_aaf, proto_1722_aaf); dissector_add_uint("ieee1722.subtype", IEEE_1722_SUBTYPE_AAF, avb1722_aaf_handle); } void proto_register_1722_61883(void) { static hf_register_info hf[] = { { &hf_1722_61883_mrfield, { "Media Clock Restart", "61883.mrfield", FT_BOOLEAN, 8, NULL, IEEE_1722_MR_MASK, NULL, HFILL } }, { &hf_1722_61883_gvfield, { "Gateway Info Valid", "61883.gvfield", FT_BOOLEAN, 8, NULL, IEEE_1722_GV_MASK, NULL, HFILL } }, { &hf_1722_61883_tvfield, { "Timestamp Valid", "61883.tvfield", FT_BOOLEAN, 8, NULL, IEEE_1722_TV_MASK, NULL, HFILL } }, { &hf_1722_61883_seqnum, { "Sequence Number", "61883.seqnum", FT_UINT8, BASE_HEX, NULL, 0x00, NULL, HFILL } }, { &hf_1722_61883_tufield, { "Timestamp Uncertain", "61883.tufield", FT_BOOLEAN, 8, NULL, IEEE_1722_TU_MASK, NULL, HFILL } }, { &hf_1722_61883_stream_id, { "Stream ID", "61883.stream_id", FT_UINT64, BASE_HEX, NULL, 0x00, NULL, HFILL } }, { &hf_1722_61883_avtp_timestamp, { "AVTP Timestamp", "61883.avtp_timestamp", FT_UINT32, BASE_HEX, NULL, 0x00, NULL, HFILL } }, { &hf_1722_61883_gateway_info, { "Gateway Info", "61883.gateway_info", FT_UINT32, BASE_HEX, NULL, 0x00, NULL, HFILL } }, { &hf_1722_61883_stream_data_length, { "1394 Stream Data Length", "61883.stream_data_len", FT_UINT16, BASE_DEC, NULL, 0x00, NULL, HFILL } }, { &hf_1722_61883_tag, { "1394 Packet Format Tag", "61883.tag", FT_UINT8, BASE_HEX, VALS(tag_vals), IEEE_1722_TAG_MASK, NULL, HFILL } }, { &hf_1722_61883_channel, { "1394 Packet Channel", "61883.channel", FT_UINT8, BASE_DEC, NULL, IEEE_1722_CHANNEL_MASK, NULL, HFILL } }, { &hf_1722_61883_tcode, { "1394 Packet Tcode", "61883.tcode", FT_UINT8, BASE_HEX, NULL, IEEE_1722_TCODE_MASK, NULL, HFILL } }, { &hf_1722_61883_sy, { "1394 App-specific Control", "61883.sy", FT_UINT8, BASE_HEX, NULL, IEEE_1722_SY_MASK, NULL, HFILL } }, { &hf_1722_61883_cip_qi1, { "CIP Quadlet Indicator 1", "61883.qi1", FT_UINT8, BASE_HEX, NULL, IEEE_1722_QI1_MASK, NULL, HFILL } }, { &hf_1722_61883_cip_sid, { "CIP Source ID", "61883.sid", FT_UINT8, BASE_DEC, NULL, IEEE_1722_SID_MASK, NULL, HFILL } }, { &hf_1722_61883_cip_dbs, { "CIP Data Block Size", "61883.dbs", FT_UINT8, BASE_HEX, NULL, 0x00, NULL, HFILL } }, { &hf_1722_61883_cip_fn, { "CIP Fraction Number", "61883.fn", FT_UINT8, BASE_HEX, NULL, IEEE_1722_FN_MASK, NULL, HFILL } }, { &hf_1722_61883_cip_qpc, { "CIP Quadlet Padding Count", "61883.qpc", FT_UINT8, BASE_HEX, NULL, IEEE_1722_QPC_MASK, NULL, HFILL } }, { &hf_1722_61883_cip_sph, { "CIP Source Packet Header", "61883.sph", FT_BOOLEAN, 8, NULL, IEEE_1722_SPH_MASK, NULL, HFILL } }, { &hf_1722_61883_cip_dbc, { "CIP Data Block Continuity", "61883.dbc", FT_UINT8, BASE_HEX, NULL, 0x00, NULL, HFILL } }, { &hf_1722_61883_cip_qi2, { "CIP Quadlet Indicator 2", "61883.qi2", FT_UINT8, BASE_HEX, NULL, IEEE_1722_QI2_MASK, NULL, HFILL } }, { &hf_1722_61883_cip_fmt, { "CIP Format ID", "61883.fmt", FT_UINT8, BASE_HEX, VALS(format_vals), IEEE_1722_FMT_MASK, NULL, HFILL } }, { &hf_1722_61883_cip_fdf, { "CIP Format Dependent Field", "61883.fdf", FT_UINT8, BASE_HEX, NULL, 0x00, NULL, HFILL } }, { &hf_1722_61883_cip_syt, { "CIP SYT", "61883.syt", FT_UINT16, BASE_HEX, NULL, 0x00, NULL, HFILL } }, { &hf_1722_61883_audio_data, { "Audio Data", "61883.audiodata", FT_BYTES, BASE_NONE, NULL, 0x00, NULL, HFILL } }, { &hf_1722_61883_label, { "Label", "61883.audiodata.sample.label", FT_UINT8, BASE_HEX, NULL, 0x00, NULL, HFILL } }, { &hf_1722_61883_sample, { "Sample", "61883.audiodata.sample.sampledata", FT_BYTES, BASE_NONE, NULL, 0x00, NULL, HFILL } }, { &hf_1722_61883_video_data, { "Video Data", "61883.videodata", FT_BYTES, BASE_NONE, NULL, 0x00, NULL, HFILL } }, { &hf_1722_61883_source_packet_header_timestamp, { "Source Packet Header Timestamp", "61883.spht", FT_UINT32, BASE_HEX, NULL, 0x00, NULL, HFILL } } }; static gint *ett[] = { &ett_1722_61883, &ett_1722_61883_audio, &ett_1722_61883_sample }; static ei_register_info ei[] = { { &ei_1722_61883_incorrect_tag, { "61883.incorrect_tag", PI_PROTOCOL, PI_WARN, "Incorrect tag field, only 0x00 and 0x01 supported for AVTP", EXPFILL }}, { &ei_1722_61883_incorrect_tcode, { "61883.incorrect_tcode", PI_PROTOCOL, PI_WARN, "Incorrect tcode, talker shall set this field to 0x0A", EXPFILL }}, { &ei_1722_61883_incorrect_qi1, { "61883.incorrect_qi1", PI_PROTOCOL, PI_WARN, "Incorrect quadlet indicator 1 field, talker shall set this field to 0x00", EXPFILL }}, { &ei_1722_61883_incorrect_qpc, { "61883.incorrect_qpc", PI_PROTOCOL, PI_WARN, "Incorrect quadlet padding count field, shall be set to 0", EXPFILL }}, { &ei_1722_61883_incorrect_qi2, { "61883.incorrect_qi2", PI_PROTOCOL, PI_WARN, "Incorrect quadlet indicator 2 field, talker shall set this field to 0x02", EXPFILL }}, { &ei_1722_61883_unknown_format, { "61883.unknown_format", PI_PROTOCOL, PI_NOTE, "IEC 61883 format not dissected yet", EXPFILL }} }; expert_module_t* expert_1722_61883; /* Register the protocol name and description */ proto_1722_61883 = proto_register_protocol( "IEC 61883 Protocol", /* name */ "IEC 61883", /* short name */ "61883"); /* abbrev */ /* Required function calls to register the header fields and subtrees used */ proto_register_field_array(proto_1722_61883, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); expert_1722_61883 = expert_register_protocol(proto_1722_61883); expert_register_field_array(expert_1722_61883, ei, array_length(ei)); } void proto_reg_handoff_1722_61883(void) { dissector_handle_t avb1722_61883_handle; avb1722_61883_handle = create_dissector_handle(dissect_1722_61883, proto_1722_61883); dissector_add_uint("ieee1722.subtype", IEEE_1722_SUBTYPE_61883, avb1722_61883_handle); } /* Register the protocol with Wireshark */ void proto_register_1722(void) { static hf_register_info hf[] = { { &hf_1722_subtype, { "AVBTP Subtype", "ieee1722.subtype", FT_UINT8, BASE_HEX | BASE_RANGE_STRING, RVALS(ieee1722_subtype_range_vals), IEEE_1722_SUBTYPE_MASK, NULL, HFILL } }, { &hf_1722_svfield, { "AVTP Stream ID Valid", "ieee1722.svfield", FT_BOOLEAN, 8, NULL, IEEE_1722_SV_MASK, NULL, HFILL } }, { &hf_1722_verfield, { "AVTP Version", "ieee1722.verfield", FT_UINT8, BASE_HEX, NULL, IEEE_1722_VER_MASK, NULL, HFILL } } }; static gint *ett[] = { &ett_1722 }; /* Register the protocol name and description */ proto_1722 = proto_register_protocol("IEEE 1722 Protocol", "IEEE1722", "ieee1722"); /* Required function calls to register the header fields and subtrees used */ proto_register_field_array(proto_1722, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); /* Sub-dissector for 1772.1, 1722 AAF, 1722 CRF, 1722 61883 */ avb_dissector_table = register_dissector_table("ieee1722.subtype", "IEEE1722 AVBTP Subtype", proto_1722, FT_UINT8, BASE_HEX, DISSECTOR_TABLE_NOT_ALLOW_DUPLICATE); } void proto_reg_handoff_1722(void) { dissector_handle_t avbtp_handle; avbtp_handle = create_dissector_handle(dissect_1722, proto_1722); dissector_add_uint("ethertype", ETHERTYPE_AVBTP, avbtp_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: */