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authorBen Stewart <bst@google.com>2016-05-25 14:36:51 -0700
committerAnders Broman <a.broman58@gmail.com>2016-08-15 07:13:35 +0000
commit0ebaffe0a8b319a2a9b1072d01214834286dff05 (patch)
tree1bc286fd0666a41a2e6bf0afde4f5e0bac2d9292
parenta5166affc47a9954c5177994c9b83f34313c7eb4 (diff)
Implement support for SCTE-35 switching messages.
This module implements a dissector for the main table in a SCTE-35 message, a splice_info_section. This payload is carried in a MPEG Section Table with a table ID of 0xFC. PIDs carrying this sort of table are also noted in the PMT with a stream type of 0x86, and a registration descriptor with fourcc 'CUEI'. The various splice command types are implemented in separate modules, and are linked to this dissector through the field scte35.splice_command_type. Field names follow the conventions documented in the SCTE35 specification. This dissector does not support encrypted SCTE35 messages, other than indication through the scte35.encrypted_packet flag. The SCTE-35 protocol is described by the Society of Cable Telecommunications Engineers at <https://www.scte.org/documents/pdf/Standards/Top%20Ten/ANSI_SCTE%2035%202013.pdf>. Bug: 12521 Change-Id: I3113e6e61a4e7f1a4a932a0128ca2846c7ce6e6f Reviewed-on: https://code.wireshark.org/review/15562 Petri-Dish: Michael Mann <mmann78@netscape.net> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: Anders Broman <a.broman58@gmail.com>
-rw-r--r--AUTHORS.src3
-rw-r--r--docbook/release-notes.asciidoc2
-rw-r--r--epan/dissectors/CMakeLists.txt1
-rw-r--r--epan/dissectors/packet-mpeg-pmt.c1
-rw-r--r--epan/dissectors/packet-scte35.c1532
5 files changed, 1539 insertions, 0 deletions
diff --git a/AUTHORS.src b/AUTHORS.src
index c49dd10b9d..bca6dbba63 100644
--- a/AUTHORS.src
+++ b/AUTHORS.src
@@ -3674,6 +3674,9 @@ Barbu Paul - Gheorghe <barbu.paul.gheorghe[AT]gmail.com> {
Martin Kacer <kacer.martin[AT]gmail.com> {
JSON and Elasticsearch tshark output
}
+Ben Stewart <bst[AT]google.com> {
+ SCTE-35 dissector
+}
Sumit Kumar Jha <sjha3[AT]ncsu.edu> {
Generic Protocol Extension Support for VXLAN
diff --git a/docbook/release-notes.asciidoc b/docbook/release-notes.asciidoc
index 8053861191..d779680663 100644
--- a/docbook/release-notes.asciidoc
+++ b/docbook/release-notes.asciidoc
@@ -128,6 +128,8 @@ vSocket
ISO 15765
Unified Diagnostic Services (UDS)
Encrypted UDP based FTP with multicast
+SCTE-35 Digital Program Insertion Messages
+
--sort-and-group--
=== Updated Protocol Support
diff --git a/epan/dissectors/CMakeLists.txt b/epan/dissectors/CMakeLists.txt
index 0d16b3777e..f09bf68a94 100644
--- a/epan/dissectors/CMakeLists.txt
+++ b/epan/dissectors/CMakeLists.txt
@@ -1161,6 +1161,7 @@ set(DISSECTOR_SRC
packet-scsi-smc.c
packet-scsi-ssc.c
packet-scsi.c
+ packet-scte35.c
packet-sctp.c
packet-sdh.c
packet-sdlc.c
diff --git a/epan/dissectors/packet-mpeg-pmt.c b/epan/dissectors/packet-mpeg-pmt.c
index 670678f0b4..73d329c898 100644
--- a/epan/dissectors/packet-mpeg-pmt.c
+++ b/epan/dissectors/packet-mpeg-pmt.c
@@ -109,6 +109,7 @@ static const value_string mpeg_pmt_stream_type_vals[] = {
{ 0x24, "ITU-T Rec. H.265 and ISO/IEC 23008-2 (Ultra HD video) in a packetized stream" },
{ 0x7F, "IPMP stream" },
{ 0x81, "ATSC A/52 Audio" },
+ { 0x86, "SCTE-35 Splice Information" },
{ 0xA1, "ETV-AM BIF Data Stream" },
{ 0xC0, "ETV-AM EISS Signaling" },
{ 0x00, NULL }
diff --git a/epan/dissectors/packet-scte35.c b/epan/dissectors/packet-scte35.c
new file mode 100644
index 0000000000..30977f403d
--- /dev/null
+++ b/epan/dissectors/packet-scte35.c
@@ -0,0 +1,1532 @@
+/* packet-scte35.c
+ * Routines for SCTE-35 dissection
+ * Author: Ben Stewart <bst[at]google.com>
+ * Copyright 2016 Google Inc.
+ *
+ * The SCTE-35 protocol is described by the Society of Cable Telecommunications
+ * Engineers at <https://www.scte.org/documents/pdf/Standards/Top%20Ten/ANSI_SCTE%2035%202013.pdf>.
+ *
+ * This module implements a dissector for the main table in a SCTE-35 message, a
+ * splice_info_section. This payload is carried in a MPEG Section Table with a
+ * table ID of 0xFC. PIDs carrying this sort of table are also noted in the PMT
+ * with a stream type of 0x86, and a registration descriptor with fourcc 'CUEI'.
+ *
+ * The various splice command types are implemented in separate modules, and are
+ * linked to this dissector through the field scte35.splice_command_type. All
+ * field names follow the conventions documented in the SCTE35 specification.
+ *
+ * This dissector does not support encrypted SCTE35 messages, other than
+ * indicating through the scte35.encrypted_packet flag.
+ *
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * 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.
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+
+#define SCTE35_CMD_SPLICE_NULL (0x00)
+#define SCTE35_CMD_SPLICE_SCHEDULE (0x04)
+#define SCTE35_CMD_SPLICE_INSERT (0x05)
+#define SCTE35_CMD_TIME_SIGNAL (0x06)
+#define SCTE35_CMD_BANDWIDTH_RESERVATION (0x07)
+#define SCTE35_CMD_PRIVATE_COMMAND (0xff)
+
+#define SCTE35_AVAIL_DESCRIPTOR (0x00)
+#define SCTE35_DTMF_DESCRIPTOR (0x01)
+#define SCTE35_SEGMENTATION_DESCRIPTOR (0x02)
+
+void proto_register_scte35(void);
+void proto_register_scte35_private_command(void);
+void proto_register_scte35_splice_insert(void);
+void proto_register_scte35_splice_schedule(void);
+void proto_register_scte35_time_signal(void);
+void proto_reg_handoff_scte35(void);
+void proto_reg_handoff_scte35_private_command(void);
+void proto_reg_handoff_scte35_splice_insert(void);
+void proto_reg_handoff_scte35_splice_schedule(void);
+void proto_reg_handoff_scte35_time_signal(void);
+
+/* MPEG Section Table ID for a SCTE35 splice_info_section. */
+static const unsigned char SCTE35_TABLE_ID = 0xFCU;
+
+/* Minimum length for a splice_info_section, excluding any splice commands,
+ * splice descriptors, encrypted CRC or alignment stuffing.
+ */
+static const int SCTE35_SI_MIN_LEN = 20;
+
+/* Protocol handle */
+static int proto_scte35 = -1;
+
+/* Dissector table for scte35.splice_command_type */
+static dissector_table_t scte35_cmd_dissector_table = NULL;
+
+
+/* splice_info_section table */
+static gint ett_scte35_splice_info_section = -1;
+
+/* splice_info_section fields */
+static gint hf_table_id = -1;
+static gint hf_section_syntax_indicator = -1;
+static gint hf_private_indicator = -1;
+static gint hf_reserved = -1;
+static gint hf_section_length = -1;
+static gint hf_protocol_version = -1;
+static gint hf_encrypted_packet = -1;
+static gint hf_encryption_algorithm = -1;
+static gint hf_pts_adjustment = -1;
+static gint hf_cw_index = -1;
+static gint hf_tier = -1;
+static gint hf_splice_command_length = -1;
+static gint hf_splice_command_type = -1;
+static gint hf_descriptor_loop_length = -1;
+static gint hf_splice_descriptor_tag = -1;
+static gint hf_splice_descriptor_length = -1;
+static gint hf_splice_descriptor_identifier = -1;
+static gint hf_descriptor_provider_avail_id = -1;
+static gint hf_descriptor_preroll = -1;
+static gint hf_descriptor_dtmf_count = -1;
+static gint hf_descriptor_dtmf_reserved = -1;
+static gint hf_descriptor_dtmf = -1;
+static gint hf_descriptor_event_id = -1;
+static gint hf_descriptor_cancel_indicator = -1;
+static gint hf_descriptor_reserved0 = -1;
+static gint hf_descriptor_psf = -1;
+static gint hf_descriptor_segmentation_duration_flag = -1;
+static gint hf_descriptor_delivery_not_restricted_flag = -1;
+static gint hf_descriptor_web_delivery_allowed_flag = -1;
+static gint hf_descriptor_no_regional_blackout_flag = -1;
+static gint hf_descriptor_archive_allow_flag = -1;
+static gint hf_descriptor_device_restrictions = -1;
+static gint hf_descriptor_reserved1 = -1;
+static gint hf_descriptor_component_count = -1;
+static gint hf_descriptor_component_tag = -1;
+static gint hf_descriptor_component_reserved = -1;
+static gint hf_descriptor_component_pts_offset = -1;
+static gint hf_descriptor_segmentation_duration = -1;
+static gint hf_descriptor_segmentation_upid_type = -1;
+static gint hf_descriptor_segmentation_upid_length = -1;
+static gint hf_descriptor_segmentation_upid = -1;
+static gint hf_descriptor_segmentation_type_id = -1;
+static gint hf_descriptor_segment_num = -1;
+static gint hf_descriptor_segments_expected = -1;
+static gint hf_e_crc32 = -1;
+static gint hf_crc32 = -1;
+
+/* time_signal protocol and fields */
+static int proto_scte35_time = -1;
+static gint ett_scte35_time_signal = -1;
+static gint ett_scte35_time_signal_splice_time = -1;
+static gint hf_time_specified = -1;
+static gint hf_time_reserved = -1;
+static gint hf_time_pts = -1;
+
+/* private_command protocol and fields */
+static int proto_private_command = -1;
+static gint ett_private_command = -1;
+static gint hf_identifier = -1;
+static gint hf_private_byte = -1;
+
+/* Dissector table for scte35_private_command.identifier */
+static dissector_table_t private_identifier_table = NULL;
+
+static dissector_handle_t scte35_handle = NULL;
+
+/* splice_insert protocol and fields */
+static int proto_scte35_si = -1;
+static gint ett_scte35_splice_insert = -1;
+static gint hf_splice_insert_event_id = -1;
+static gint hf_splice_cancel_indicator = -1;
+static gint hf_reserved0 = -1;
+static gint hf_out_of_network_indicator = -1;
+static gint hf_program_splice_flag = -1;
+static gint hf_duration_flag = -1;
+static gint hf_splice_immediate_flag = -1;
+static gint hf_reserved1 = -1;
+static gint hf_splice_time_specified_flag = -1;
+static gint hf_splice_time_reserved = -1;
+static gint hf_splice_time_pts_time = -1;
+static gint hf_component_count = -1;
+static gint hf_component_tag = -1;
+static gint hf_component_splice_time_tsf = -1;
+static gint hf_component_splice_time_reserved = -1;
+static gint hf_component_splice_time_pts_time = -1;
+static gint hf_break_duration_auto_return = -1;
+static gint hf_break_duration_reserved = -1;
+static gint hf_break_duration_duration = -1;
+static gint hf_unique_program_id = -1;
+static gint hf_avail_num = -1;
+static gint hf_avails_expected = -1;
+
+/* splice_schedule protocol and fields */
+static int proto_scte35_splice_schedule = -1;
+static gint ett_scte35_splice_schedule = -1;
+static gint hf_splice_count = -1;
+static gint hf_splice_event_id = -1;
+static gint hf_splice_event_cancel_indicator = -1;
+static gint hf_splice_reserved0 = -1;
+static gint hf_splice_out_of_network = -1;
+static gint hf_splice_program_splice_flag = -1;
+static gint hf_splice_duration_flag = -1;
+static gint hf_splice_reserved1 = -1;
+static gint hf_splice_utc_splice_time = -1;
+static gint hf_splice_component_count = -1;
+static gint hf_splice_component_tag = -1;
+static gint hf_splice_component_utc_splice_time = -1;
+static gint hf_splice_break_duration_auto_return = -1;
+static gint hf_splice_break_duration_reserved = -1;
+static gint hf_splice_break_duration_duration = -1;
+static gint hf_splice_unique_program_id = -1;
+static gint hf_splice_avail_num = -1;
+static gint hf_splice_avails_expected = -1;
+
+static const true_false_string tfs_section_syntax_indicator = {
+ "Reserved", "MPEG short sections in use"};
+
+static const true_false_string tfs_private_indicator = {
+ "Reserved", "Mandatory value"};
+
+static const true_false_string tfs_encrypted_packet = {
+ "Encrypted data", "Cleartext"};
+
+static const true_false_string tfs_descriptor_cancel_indicator = {
+ "Cancel Request", "New or existing event"};
+
+static const true_false_string tfs_descriptor_psf = {
+ "All PIDs to be spliced", "Component Splice Mode"};
+
+static const true_false_string tfs_descriptor_sdf = {
+ "Segmentation duration present", "No duration present"};
+
+static const true_false_string tfs_descriptor_dnr = {
+ "No delivery restrictions", "Restricted delivery"};
+
+static const true_false_string tfs_descriptor_web = {
+ "Permitted", "Restricted"};
+
+static const true_false_string tfs_descriptor_blackout = {
+ "No regional blackouts", "Regional restrictions"};
+
+static const true_false_string tfs_descriptor_archive = {
+ "No recording restrictions", "Recording is restricted"};
+
+static const range_string rv_splice_command_type[] = {
+ { SCTE35_CMD_SPLICE_NULL, SCTE35_CMD_SPLICE_NULL, "splice_null" },
+ { 0x01, 0x03, "Reserved" },
+ { SCTE35_CMD_SPLICE_SCHEDULE, SCTE35_CMD_SPLICE_SCHEDULE, "splice_schedule" },
+ { SCTE35_CMD_SPLICE_INSERT, SCTE35_CMD_SPLICE_INSERT, "splice_insert" },
+ { SCTE35_CMD_TIME_SIGNAL, SCTE35_CMD_TIME_SIGNAL, "time_signal" },
+ { SCTE35_CMD_BANDWIDTH_RESERVATION, SCTE35_CMD_BANDWIDTH_RESERVATION, "bandwidth_reservation" },
+ { 0x08, 0xfe, "Reserved" },
+ { SCTE35_CMD_PRIVATE_COMMAND, SCTE35_CMD_PRIVATE_COMMAND, "private_command" },
+ { 0, 0, NULL }
+};
+
+static const range_string rv_splice_descriptor_tag[] = {
+ { SCTE35_AVAIL_DESCRIPTOR, SCTE35_AVAIL_DESCRIPTOR, "avail_descriptor" },
+ { SCTE35_DTMF_DESCRIPTOR, SCTE35_DTMF_DESCRIPTOR, "DTMF_descriptor" },
+ { SCTE35_SEGMENTATION_DESCRIPTOR, SCTE35_SEGMENTATION_DESCRIPTOR, "segmentation_descriptor" },
+ { 0x03, 0xff, "Reserved" },
+ { 0, 0, NULL }
+};
+
+static const range_string scte35_device_restrictions[] = {
+ { 0x00, 0x00, "Restrict Group 0" },
+ { 0x01, 0x01, "Restrict Group 1" },
+ { 0x02, 0x02, "Restrict Group 2" },
+ { 0x03, 0x03, "No Restrictions" },
+ { 0, 0, NULL }
+};
+
+static const range_string scte35_segmentation_upid_type[] = {
+ { 0x00, 0x00, "Not Used" },
+ { 0x01, 0x01, "User Defined (deprecated)" },
+ { 0x02, 0x02, "ISCI" },
+ { 0x03, 0x03, "Ad-ID" },
+ { 0x04, 0x04, "UMID (SMPTE 330M)" },
+ { 0x05, 0x05, "ISAN" },
+ { 0x06, 0x06, "Versioned ISAN" },
+ { 0x07, 0x07, "Tribune TID" },
+ { 0x08, 0x08, "Turner Identifier" },
+ { 0x09, 0x09, "CableLabs ADI Identifier" },
+ { 0x0a, 0x0a, "EIDR" },
+ { 0x0b, 0x0b, "ATSC A57/B Content Identifier" },
+ { 0x0c, 0x0c, "Managed Private UPID" },
+ { 0x0d, 0x0d, "Multiple UPIDs" },
+ { 0x0e, 0xff, "Reserved" },
+ { 0, 0, NULL }
+};
+
+static const range_string scte35_segmentation_type_id[] = {
+ { 0x00, 0x00, "Not Indicated" },
+ { 0x01, 0x01, "Content Identification" },
+ { 0x10, 0x10, "Program Start" },
+ { 0x11, 0x11, "Program End" },
+ { 0x12, 0x12, "Program Early Termination" },
+ { 0x13, 0x13, "Program Breakaway" },
+ { 0x14, 0x14, "Program Resumption" },
+ { 0x15, 0x15, "Program Runover Planned" },
+ { 0x16, 0x16, "Program Runover Unplanned" },
+ { 0x17, 0x17, "Program Overlap Start" },
+ { 0x20, 0x20, "Chapter Start" },
+ { 0x21, 0x21, "Chapter End" },
+ { 0x30, 0x30, "Provider Advertisement Start" },
+ { 0x31, 0x31, "Provider Advertisement End" },
+ { 0x32, 0x32, "Distributor Advertisement Start" },
+ { 0x33, 0x33, "Distributor Advertisement End" },
+ { 0x34, 0x34, "Placement Opportunity Start" },
+ { 0x35, 0x35, "Placement Opportunity End" },
+ { 0x40, 0x40, "Unscheduled Event Start" },
+ { 0x41, 0x41, "Unscheduled Event End" },
+ { 0, 0, NULL }
+};
+
+static const range_string rv_encryption_algorithm[] = {
+ { 0x00, 0x00, "No encryption"},
+ { 0x01, 0x01, "DES - ECB mode"},
+ { 0x02, 0x02, "DES - CBC mode"},
+ { 0x03, 0x03, "Triple DES EDE3 - ECB mode"},
+ { 0x04, 0x1F, "Reserved"},
+ { 0x20, 0x3F, "User private"},
+ { 0, 0, NULL }
+};
+
+
+/* time_signal dissector */
+static int
+dissect_scte35_time_signal(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) {
+ gint tvb_len, min_length = 1, offset = 0;
+ guint8 time_specified_flag;
+ proto_item *ti;
+ proto_tree *time_tree;
+
+ /* Check packet length. */
+ tvb_len = (gint)tvb_reported_length(tvb);
+ if (tvb_len < min_length)
+ return 0;
+
+ time_specified_flag = tvb_get_guint8(tvb, offset) & 0x80;
+ if (time_specified_flag)
+ min_length += 4;
+ if (tvb_len < min_length)
+ return 0;
+
+ /* Set up headers in the packet list */
+ col_add_fstr(pinfo->cinfo, COL_INFO, "Time Signal (%s)",
+ time_specified_flag ? "Future" : "Immediate");
+
+ /* Create a subtee for the time_signal */
+ ti = proto_tree_add_item(tree, proto_scte35_time, tvb, 0, -1, ENC_NA);
+ time_tree = proto_item_add_subtree(ti, ett_scte35_time_signal);
+
+ /* Parse out the fields. */
+ proto_tree_add_item(time_tree, hf_time_specified, tvb, offset, 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(time_tree, hf_time_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
+ if (time_specified_flag) {
+ proto_tree_add_item(time_tree, hf_time_pts, tvb, offset, 5, ENC_BIG_ENDIAN);
+ offset += 4;
+ }
+ offset += 1;
+
+ return offset;
+}
+
+void
+proto_register_scte35_time_signal(void)
+{
+ static gint *ett[] = {
+ &ett_scte35_time_signal,
+ &ett_scte35_time_signal_splice_time,
+ };
+
+ static hf_register_info hf[] = {
+ {&hf_time_specified,
+ {"Time Specified", "scte35_time.splice.time_specified", FT_BOOLEAN, 8,
+ NULL, 0x80, NULL, HFILL}},
+ {&hf_time_reserved,
+ {"Reserved", "scte35_time.splice.reserved", FT_UINT8, BASE_HEX,
+ NULL, 0x7E, NULL, HFILL}},
+ {&hf_time_pts,
+ {"PTS Time", "scte35_time.splice.pts", FT_UINT64, BASE_DEC,
+ NULL, G_GUINT64_CONSTANT(0x1FFFFFFFF), NULL, HFILL}},
+ };
+
+ proto_scte35_time = proto_register_protocol("SCTE-35 Time Signal", "SCTE35 TS", "scte35_time");
+ proto_register_subtree_array(ett, array_length(ett));
+ proto_register_field_array(proto_scte35_time, hf, array_length(hf));
+}
+
+void
+proto_reg_handoff_scte35_time_signal(void)
+{
+ dissector_handle_t scte35_time_handle;
+
+ /* Create a dissector for time_signal packets. */
+ scte35_time_handle = create_dissector_handle(dissect_scte35_time_signal, proto_scte35_time);
+
+ /* And hook it up to SCTE-35 messages. */
+ dissector_add_uint("scte35.splice_command_type", SCTE35_CMD_TIME_SIGNAL, scte35_time_handle);
+}
+
+
+/* scte35 private_command dissector */
+static int
+dissect_scte35_private_command(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
+{
+ gint tvb_len;
+ guint32 identifier;
+ gint offset = 0;
+ proto_item *ti;
+ proto_tree *pc_tree;
+
+ tvb_len = (gint)tvb_reported_length(tvb);
+ if (tvb_len < 4)
+ return 0;
+
+ /* Display rudimentary header information. */
+ ti = proto_tree_add_item(tree, proto_private_command, tvb, 0, -1, ENC_NA);
+ pc_tree = proto_item_add_subtree(ti, ett_private_command);
+
+ proto_tree_add_item_ret_uint(pc_tree, hf_identifier, tvb, offset, 4, ENC_BIG_ENDIAN, &identifier);
+ col_add_fstr(pinfo->cinfo, COL_INFO, "Private Command (0x%08x)", identifier);
+ offset += 4;
+ proto_tree_add_item(pc_tree, hf_private_byte, tvb, offset, -1, ENC_NA);
+
+ /* Let another dissector try to decode this data. */
+ dissector_try_uint(private_identifier_table, identifier, tvb, pinfo, tree);
+
+ return tvb_len;
+}
+
+void
+proto_register_scte35_private_command(void)
+{
+ static gint *ett[] = {
+ &ett_private_command,
+ };
+
+ static hf_register_info hf[] = {
+ {&hf_identifier,
+ {"Identifier", "scte35_private_command.identifier", FT_UINT32,
+ BASE_HEX, NULL, 0, NULL, HFILL}},
+ {&hf_private_byte,
+ {"Private Bytes", "scte35_private_command.private_byte", FT_BYTES, 0,
+ NULL, 0, NULL, HFILL}},
+ };
+
+ proto_private_command = proto_register_protocol("SCTE-35 Private Command", "SCTE35 PC", "scte35_private_command");
+
+ proto_register_subtree_array(ett, array_length(ett));
+ proto_register_field_array(proto_private_command, hf, array_length(hf));
+
+ /* Allow other modules to hook private commands and decode them. */
+ private_identifier_table = register_dissector_table(
+ "scte35_private_command.identifier", "SCTE-35 Private Command Identifier",
+ proto_private_command, FT_UINT32, BASE_HEX,
+ DISSECTOR_TABLE_ALLOW_DUPLICATE);
+}
+
+void
+proto_reg_handoff_scte35_private_command(void)
+{
+ dissector_handle_t scte35_private_command_handle;
+
+ /* Create a dissector for private commands. */
+ scte35_private_command_handle = create_dissector_handle(dissect_scte35_private_command, proto_private_command);
+
+ /* Trigger our dissector on any private_command SCTE-35 messages. */
+ dissector_add_uint("scte35.splice_command_type", SCTE35_CMD_PRIVATE_COMMAND, scte35_private_command_handle);
+}
+
+
+/* scte35 splice_insert dissector */
+static int
+dissect_component(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, guint8 sif, int idx)
+{
+ gint offset = 0;
+ guint8 component_tag, tsf;
+ proto_tree *component_tree;
+ gint tvb_len, min_length = sif ? 1 : 2;
+
+ tvb_len = (gint)tvb_reported_length(tvb);
+ if (tvb_len < min_length)
+ return 0;
+
+ if (!sif) {
+ /* Check whether time is present in the component. */
+ tsf = tvb_get_guint8(tvb, offset + 1) & 0x80;
+ if (tsf) {
+ min_length += 4;
+ if (tvb_len < min_length)
+ return 0;
+ }
+ }
+
+ /* Create a subtree for the component. */
+ component_tag = tvb_get_guint8(tvb, offset);
+ proto_tree_add_subtree_format(
+ tree, tvb, offset, min_length, idx, &component_tree,
+ "Component %d (0x%02x)", idx, component_tag);
+
+ /* Parse out component flags. */
+ proto_tree_add_item(component_tree, hf_component_tag, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset++;
+
+ /* For non-immediate splices.. */
+ if (!sif) {
+ proto_tree_add_item(component_tree, hf_component_splice_time_tsf, tvb,
+ offset, 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(component_tree, hf_component_splice_time_reserved,
+ tvb, offset, 1, ENC_BIG_ENDIAN);
+
+ /* And the PTS if present. */
+ if (tsf) {
+ proto_tree_add_item(component_tree, hf_component_splice_time_pts_time,
+ tvb, offset, 5, ENC_BIG_ENDIAN);
+ offset += 4;
+ }
+ offset++;
+ }
+
+ return offset;
+}
+
+static int
+dissect_scte35_splice_insert(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
+{
+ gint tvb_len, min_length = 5, dissected_length;
+ guint8 cancel_flag, psf, df, sif, tsf, component_count;
+ guint32 event_id;
+ gint component;
+ gint offset = 0;
+ proto_item *ti;
+ proto_tree *si_tree, *st_tree;
+
+ static const int *new_event_fields[] = {
+ &hf_out_of_network_indicator,
+ &hf_program_splice_flag,
+ &hf_duration_flag,
+ &hf_splice_immediate_flag,
+ &hf_reserved1,
+ NULL
+ };
+
+ /* Check with no optional subfields */
+ tvb_len = (gint)tvb_reported_length(tvb);
+ if (tvb_len < min_length)
+ return 0;
+
+ cancel_flag = tvb_get_guint8(tvb, offset + 4) & 0x80;
+ event_id = tvb_get_ntohl(tvb, 0);
+
+ if (!cancel_flag) {
+ min_length += 5;
+ if (tvb_len < min_length)
+ return 0;
+ }
+
+ /* Set up headers in the packet list */
+ col_add_fstr(pinfo->cinfo, COL_INFO, "Splice %s Event 0x%08x",
+ cancel_flag ? "Cancellation" : "Insertion", event_id);
+
+ /* Create a root tree element for the splice_insert protocol. */
+ ti = proto_tree_add_item(tree, proto_scte35_si, tvb, 0, -1, ENC_NA);
+ si_tree = proto_item_add_subtree(ti, ett_scte35_splice_insert);
+
+ /* Parse header fields */
+ proto_tree_add_item(si_tree, hf_splice_insert_event_id, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ proto_tree_add_item(si_tree, hf_splice_cancel_indicator, tvb, offset, 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(si_tree, hf_reserved0, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset++;
+
+ /* Check for a new event. */
+ if (!cancel_flag) {
+
+ /* Parse out the 'new event' fields. */
+ psf = tvb_get_guint8(tvb, offset) & 0x40;
+ df = tvb_get_guint8(tvb, offset) & 0x20;
+ sif = tvb_get_guint8(tvb, offset) & 0x10;
+
+ proto_tree_add_bitmask_list(si_tree, tvb, offset, 1, new_event_fields, ENC_BIG_ENDIAN);
+ offset++;
+
+ /* Parse out the program-level splice fields. */
+ if (psf && !sif) {
+ min_length += 1;
+ if (tvb_len < min_length)
+ return offset;
+
+ tsf = tvb_get_bits8(tvb, offset * 8, 1);
+ proto_tree_add_subtree(si_tree, tvb, offset, tsf ? 5 : 1, 0, &st_tree, "Program Splice Time");
+ proto_tree_add_item(st_tree, hf_splice_time_specified_flag, tvb, offset, 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(st_tree, hf_splice_time_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
+
+ /* If a time is specified, display it too. */
+ if (tsf) {
+ min_length += 4;
+ if (tvb_len < min_length)
+ return offset;
+
+ proto_tree_add_item(st_tree, hf_splice_time_pts_time, tvb, offset, 5, ENC_BIG_ENDIAN);
+ offset += 4;
+ }
+ offset++;
+ }
+
+ /* For component-level splices, parse the component table. */
+ if (!psf) {
+ min_length += 1;
+ if (tvb_len < min_length)
+ return offset;
+
+ component_count = tvb_get_guint8(tvb, offset);
+ proto_tree_add_item(si_tree, hf_component_count, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset++;
+
+ min_length += component_count * (sif ? 1 : 2);
+ if (tvb_len < min_length)
+ return offset;
+
+ /* Dissect each splice component. */
+ for (component = 0; component < component_count; ++component) {
+ dissected_length = dissect_component(
+ tvb_new_subset_remaining(tvb, offset),
+ pinfo, si_tree, sif, component);
+
+ /* Propagate failures. */
+ if (dissected_length < 1)
+ return offset;
+ offset += dissected_length;
+ }
+ }
+
+ /* If present, parse out the duration field. */
+ if (df) {
+ min_length += 5;
+ if (tvb_len < min_length)
+ return offset;
+
+ proto_tree_add_item(si_tree, hf_break_duration_auto_return, tvb, offset, 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(si_tree, hf_break_duration_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(si_tree, hf_break_duration_duration, tvb, offset, 5, ENC_BIG_ENDIAN);
+ offset += 5;
+ }
+
+ /* Parse the UPID and avails fields. */
+ proto_tree_add_item(si_tree, hf_unique_program_id, tvb, offset, 2, ENC_BIG_ENDIAN);
+ offset += 2;
+
+ proto_tree_add_item(si_tree, hf_avail_num, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset++;
+
+ proto_tree_add_item(si_tree, hf_avails_expected, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset++;
+ }
+
+ return offset;
+}
+
+void
+proto_register_scte35_splice_insert(void)
+{
+ static hf_register_info hf[] = {
+ {&hf_splice_insert_event_id,
+ {"Event ID", "scte35_si.event_id", FT_UINT32, BASE_HEX,
+ NULL, 0, NULL, HFILL}},
+ {&hf_splice_cancel_indicator,
+ {"Cancelled", "scte35_si.cancelled", FT_BOOLEAN, 8,
+ NULL, 0x80, NULL, HFILL}},
+ {&hf_reserved0,
+ {"Reserved", "scte35_si.reserved0", FT_UINT8, 1,
+ NULL, 0x7F, NULL, HFILL}},
+ {&hf_out_of_network_indicator,
+ {"Out of Network", "scte35_si.out_of_net", FT_BOOLEAN, 8,
+ NULL, 0x80, NULL, HFILL}},
+ {&hf_program_splice_flag,
+ {"Program Splice Point", "scte35_si.psf", FT_BOOLEAN, 8,
+ NULL, 0x40, NULL, HFILL}},
+ {&hf_duration_flag,
+ {"Duration Present", "scte35_si.duration_flag", FT_BOOLEAN, 8,
+ NULL, 0x20, NULL, HFILL}},
+ {&hf_splice_immediate_flag,
+ {"Splice Immediate", "scte35_si.splice_immediate", FT_BOOLEAN, 8,
+ NULL, 0x10, NULL, HFILL}},
+ {&hf_reserved1,
+ {"Reserved", "scte35_si.reserved1", FT_UINT8, 1,
+ NULL, 0x0f, NULL, HFILL}},
+ {&hf_splice_time_specified_flag,
+ {"Time Specified", "scte35_si.splice_time.time_specified", FT_BOOLEAN,
+ 8, NULL, 0x80, NULL, HFILL}},
+ {&hf_splice_time_reserved,
+ {"Reserved", "scte35_si.splice_time.reserved", FT_UINT8, 1,
+ NULL, 0x7E, NULL, HFILL}},
+ {&hf_splice_time_pts_time,
+ {"PTS Time", "scte35_si.splice_time.pts", FT_UINT64, 5,
+ NULL, G_GUINT64_CONSTANT(0x1FFFFFFFF), NULL, HFILL}},
+ {&hf_component_count,
+ {"Component Count", "scte35_si.component_count", FT_UINT8, BASE_DEC,
+ NULL, 0, NULL, HFILL}},
+ {&hf_component_tag,
+ {"Component Tag", "scte35_si.component.tag", FT_UINT8, BASE_HEX,
+ NULL, 0, NULL, HFILL}},
+ {&hf_component_splice_time_tsf,
+ {"Time Specified", "scte35_si.component.time_specified", FT_BOOLEAN, 8,
+ NULL, 0x80, NULL, HFILL}},
+ {&hf_component_splice_time_reserved,
+ {"Reserved", "scte35_si.component.reserved", FT_UINT8, 1,
+ NULL, 0x7E, NULL, HFILL}},
+ {&hf_component_splice_time_pts_time,
+ {"PTS Time", "scte35_si.component.pts", FT_UINT64, 5,
+ NULL, G_GUINT64_CONSTANT(0x1FFFFFFFF), NULL, HFILL}},
+ {&hf_break_duration_auto_return,
+ {"Auto Return", "scte35_si.break.auto_return", FT_BOOLEAN, 8,
+ NULL, 0x80, NULL, HFILL}},
+ {&hf_break_duration_reserved,
+ {"Reserved", "scte35_si.break.reserved", FT_UINT8, 1,
+ NULL, 0x7E, NULL, HFILL}},
+ {&hf_break_duration_duration,
+ {"Duration", "scte35_si.break.duration", FT_UINT64, 5,
+ NULL, G_GUINT64_CONSTANT(0x1FFFFFFFF), NULL, HFILL}},
+ {&hf_unique_program_id,
+ {"Unique Program ID", "scte35_si.upid", FT_UINT16, BASE_HEX,
+ NULL, 0, NULL, HFILL}},
+ {&hf_avail_num,
+ {"Avail Number", "scte35_si.avail", FT_UINT8, BASE_DEC,
+ NULL, 0, NULL, HFILL}},
+ {&hf_avails_expected,
+ {"Avails Expected", "scte35_si.avails_expected", FT_UINT8, BASE_DEC,
+ NULL, 0, NULL, HFILL}},
+ };
+
+ static gint *ett[] = {
+ &ett_scte35_splice_insert,
+ };
+
+ proto_scte35_si = proto_register_protocol("SCTE-35 Splice Insert", "SCTE35 SI", "scte35_si");
+
+ proto_register_subtree_array(ett, array_length(ett));
+ proto_register_field_array(proto_scte35_si, hf, array_length(hf));
+}
+
+void
+proto_reg_handoff_scte35_splice_insert(void)
+{
+ dissector_handle_t scte35_si_handle;
+
+ /* Create a splice_insert dissector, and hook it into SCTE35 parsing. */
+ scte35_si_handle = create_dissector_handle(dissect_scte35_splice_insert, proto_scte35_si);
+ dissector_add_uint("scte35.splice_command_type", SCTE35_CMD_SPLICE_INSERT, scte35_si_handle);
+}
+
+
+/* scte35 splice_schedule dissector */
+static int
+dissect_scte35_splice_schedule(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
+{
+ gint tvb_len, min_length = 1;
+ guint8 splice_count, cancel_flag, psf, df, component_count;
+ gint component, splice;
+ gint offset = 0, splice_length;
+ proto_item *ti;
+ proto_tree *ss_tree, *sp_tree, *component_tree;
+
+ static const int *splice_event_flags[] = {
+ &hf_splice_out_of_network,
+ &hf_splice_program_splice_flag,
+ &hf_splice_duration_flag,
+ &hf_splice_reserved1,
+ NULL
+ };
+
+ /* Check with no optional subfields */
+ tvb_len = (gint)tvb_reported_length(tvb);
+ if (tvb_len < min_length)
+ return 0;
+
+ /* Set up headers in the packet list */
+ splice_count = tvb_get_guint8(tvb, 0);
+ min_length += splice_count * 5;
+ if (tvb_len < min_length)
+ return 0;
+
+ col_add_fstr(pinfo->cinfo, COL_INFO, "Splice Schedule (%d splices)", splice_count);
+
+ /* Create the root of the dissection */
+ ti = proto_tree_add_item(tree, proto_scte35_splice_schedule, tvb, 0, -1, ENC_NA);
+ ss_tree = proto_item_add_subtree(ti, ett_scte35_splice_schedule);
+
+ /* Header fields for splice_schedule() message */
+ proto_tree_add_item(ss_tree, hf_splice_count, tvb, offset, 1, ENC_NA);
+ offset++;
+
+ /* Process each splice. */
+ for (splice = 0; splice < splice_count; ++splice) {
+ cancel_flag = tvb_get_bits8(tvb, offset * 8 + 32, 1);
+ psf = cancel_flag ? 0 : tvb_get_bits8(tvb, offset * 8 + 41, 1);
+ df = cancel_flag ? 0 : tvb_get_bits8(tvb, offset * 8 + 42, 1);
+ component_count = cancel_flag ? 0 : (psf ? 0 : tvb_get_guint8(tvb, offset + 6));
+
+ splice_length = 5;
+ if (!cancel_flag)
+ splice_length += 4 + 1;
+ if (!cancel_flag && psf)
+ splice_length += 4;
+ if (!cancel_flag && !psf)
+ splice_length += 1 + 5 * component_count;
+ if (!cancel_flag && df)
+ splice_length += 5;
+
+ /* Add a subtree for the splice. */
+ proto_tree_add_subtree_format(
+ ss_tree, tvb, offset, splice_length, splice, &sp_tree,
+ "Splice %d", splice);
+
+ /* Show the splice header. */
+ proto_tree_add_item(ss_tree, hf_splice_event_id, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ proto_tree_add_item(ss_tree, hf_splice_event_cancel_indicator, tvb,
+ offset, 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(ss_tree, hf_splice_reserved0, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset++;
+
+ if (!cancel_flag) {
+ min_length += 5;
+ if (tvb_len < min_length)
+ return offset;
+
+ df = tvb_get_bits8(tvb, offset * 8 + 2, 1);
+
+ /* Parse out the splice event flags. */
+ proto_tree_add_bitmask_list(ss_tree, tvb, offset, 1, splice_event_flags, ENC_BIG_ENDIAN);
+ offset++;
+
+ min_length += (psf ? 4 : 1);
+ if (tvb_len < min_length)
+ return offset;
+
+ if (psf) {
+ proto_tree_add_item(ss_tree, hf_splice_utc_splice_time, tvb,
+ offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+ } else {
+ component_count = tvb_get_guint8(tvb, offset);
+ proto_tree_add_item(ss_tree, hf_splice_component_count, tvb, offset, 1, ENC_NA);
+ offset++;
+
+ min_length += 5 * component_count;
+ if (tvb_len < min_length)
+ return offset;
+
+ /* Parse out each component stream. */
+ for (component = 0; component < component_count; ++component) {
+ proto_tree_add_subtree_format(sp_tree, tvb, offset, 5, component, &component_tree,
+ "Component %d", component);
+ proto_tree_add_item(component_tree, hf_splice_component_tag, tvb,
+ offset, 1, ENC_NA);
+ offset++;
+
+ proto_tree_add_item(component_tree, hf_splice_component_utc_splice_time, tvb,
+ offset, 4, ENC_NA);
+ offset += 4;
+ }
+ }
+
+ /* Parse out break duration, if present. */
+ if (df) {
+ min_length += 5;
+ if (tvb_len < min_length)
+ return offset;
+
+ proto_tree_add_item(ss_tree, hf_splice_break_duration_auto_return, tvb,
+ offset, 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(ss_tree, hf_splice_break_duration_reserved, tvb,
+ offset, 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(ss_tree, hf_splice_break_duration_duration, tvb,
+ offset, 5, ENC_BIG_ENDIAN);
+ offset += 5;
+ }
+ }
+
+ proto_tree_add_item(ss_tree, hf_splice_unique_program_id, tvb, offset, 2, ENC_BIG_ENDIAN);
+ offset += 2;
+
+ proto_tree_add_item(ss_tree, hf_splice_avail_num, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset++;
+
+ proto_tree_add_item(ss_tree, hf_splice_avails_expected, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset++;
+ }
+
+ return offset;
+}
+
+void
+proto_register_scte35_splice_schedule(void)
+{
+ static hf_register_info hf[] = {
+ {&hf_splice_count,
+ {"Splice Count", "scte35_splice_schedule.splice_count",
+ FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL}},
+ {&hf_splice_event_id,
+ {"Event ID", "scte35_splice_schedule.splice.event_id",
+ FT_UINT32, BASE_HEX, NULL, 0, NULL, HFILL}},
+ {&hf_splice_event_cancel_indicator,
+ {"Event Cancel Indicator", "scte35_splice_schedule.splice.event_cancel_indicator",
+ FT_BOOLEAN, 8, NULL, 0x80, NULL, HFILL}},
+ {&hf_splice_reserved0,
+ {"Reserved", "scte35_splice_schedule.splice.reserved0",
+ FT_UINT8, BASE_HEX, NULL, 0x7F, NULL, HFILL}},
+ {&hf_splice_out_of_network,
+ {"Out of Network Indicator", "scte35_splice_schedule.splice.out_of_network_indicator",
+ FT_BOOLEAN, 8, NULL, 0x80, NULL, HFILL}},
+ {&hf_splice_program_splice_flag,
+ {"Program Splice Flag", "scte35_splice_schedule.splice.program_splice_flag",
+ FT_BOOLEAN, 8, NULL, 0x40, NULL, HFILL}},
+ {&hf_splice_duration_flag,
+ {"Duration Flag", "scte35_splice_schedule.splice.duration_flag",
+ FT_BOOLEAN, 8, NULL, 0x20, NULL, HFILL}},
+ {&hf_splice_reserved1,
+ {"Reserved", "scte35_splice_schedule.splice.reserved1",
+ FT_UINT8, BASE_HEX, NULL, 0x1F, NULL, HFILL}},
+ {&hf_splice_utc_splice_time,
+ {"UTC Splice Time", "scte35_splice_schedule.splice.utc_splice_time",
+ FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL}},
+ {&hf_splice_component_count,
+ {"Component Count", "scte35_splice_schedule.splice.component_count",
+ FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL}},
+ {&hf_splice_component_tag,
+ {"Component Tag", "scte35_splice_schedule.splice.component.tag",
+ FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL}},
+ {&hf_splice_component_utc_splice_time,
+ {"UTC Splice Time", "scte35_splice_schedule.splice.component.utc_splice_time",
+ FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL}},
+ {&hf_splice_break_duration_auto_return,
+ {"Auto Return", "scte35_splice_schedule.splice.break_duration.auto_return",
+ FT_BOOLEAN, 8, NULL, 0x80, NULL, HFILL}},
+ {&hf_splice_break_duration_reserved,
+ {"Reserved", "scte35_splice_schedule.splice.break_duration.reserved",
+ FT_UINT8, BASE_HEX, NULL, 0x7E, NULL, HFILL}},
+ {&hf_splice_break_duration_duration,
+ {"Duration", "scte35_splice_schedule.splice.break_duration.duration",
+ FT_UINT64, BASE_DEC, NULL, G_GUINT64_CONSTANT(0x1FFFFFFFF), NULL, HFILL}},
+ {&hf_splice_unique_program_id,
+ {"Unique Program ID", "scte35_splice_schedule.splice.unique_program_id",
+ FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL}},
+ {&hf_splice_avail_num,
+ {"Avail Number", "scte35_splice_schedule.splice.avail_num",
+ FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL}},
+ {&hf_splice_avails_expected,
+ {"Avails Expected", "scte35_splice_schedule.splice.avails_expected",
+ FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL}},
+ };
+
+ static gint *ett[] = {
+ &ett_scte35_splice_schedule,
+ };
+
+ proto_scte35_splice_schedule = proto_register_protocol("SCTE-35 Splice Schedule", "SCTE35 SS", "scte35_splice_schedule");
+
+ proto_register_subtree_array(ett, array_length(ett));
+ proto_register_field_array(proto_scte35_splice_schedule, hf, array_length(hf));
+}
+
+void
+proto_reg_handoff_scte35_splice_schedule(void)
+{
+ dissector_handle_t dissector;
+
+ dissector = create_dissector_handle(dissect_scte35_splice_schedule, proto_scte35_splice_schedule);
+ dissector_add_uint("scte35.splice_command_type", SCTE35_CMD_SPLICE_SCHEDULE, dissector);
+}
+
+
+/* core scte35 splice_info_section dissector */
+static int
+dissect_scte35_avail_descriptor(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree)
+{
+ gint offset = 0;
+ gint tvb_len;
+
+ /* Check length. */
+ tvb_len = (gint)tvb_reported_length(tvb);
+ if (tvb_len < 4)
+ return 0;
+
+ /* Show the field. */
+ proto_tree_add_item(tree, hf_descriptor_provider_avail_id, tvb, offset, 4, ENC_NA);
+ offset += 4;
+
+ return offset;
+}
+
+static int
+dissect_scte35_dtmf_descriptor(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree)
+{
+ gint offset = 0;
+ gint tvb_len, min_length = 2;
+ guint8 dtmf_count;
+
+ /* Check length. */
+ tvb_len = (gint)tvb_reported_length(tvb);
+ if (tvb_len < min_length)
+ return 0;
+
+ dtmf_count = tvb_get_bits8(tvb, (offset+1)* 8, 3);
+
+ /* Check length with DTMF string too. */
+ min_length += dtmf_count;
+ if (tvb_len < min_length)
+ return 0;
+
+ /* Describe header. */
+ proto_tree_add_item(tree, hf_descriptor_preroll, tvb, offset, 1, ENC_NA);
+ offset++;
+
+ proto_tree_add_item(tree, hf_descriptor_dtmf_count, tvb, offset, 1, ENC_NA);
+ proto_tree_add_item(tree, hf_descriptor_dtmf_reserved, tvb, offset, 1, ENC_NA);
+ offset++;
+
+ /* Show the DTMF string field. */
+ proto_tree_add_item(tree, hf_descriptor_dtmf, tvb,
+ offset, dtmf_count, ENC_NA | ENC_ASCII);
+
+ offset += dtmf_count;
+ return offset;
+}
+
+static int
+dissect_scte35_component(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, int idx) {
+ gint offset = 0;
+ proto_tree *subtree;
+
+ /* Create the subtree. */
+ proto_tree_add_subtree_format(tree, tvb, offset, 6, idx, &subtree, "Component %d", idx);
+
+ /* Display the component fields. */
+ proto_tree_add_item(subtree, hf_descriptor_component_tag, tvb,
+ offset, 1, ENC_NA);
+ offset++;
+
+ proto_tree_add_item(subtree, hf_descriptor_component_reserved, tvb,
+ offset, 1, ENC_NA);
+ proto_tree_add_item(subtree, hf_descriptor_component_pts_offset, tvb,
+ offset, 5, ENC_BIG_ENDIAN);
+ offset += 5;
+
+ return offset;
+}
+
+static int
+dissect_scte35_segmentation_descriptor(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+ gint offset = 0, dissected_length = 0, component;
+ guint8 cancel_indicator, psf, sdf, dnr, component_count, upid_length;
+
+ /* Parse the common header */
+ proto_tree_add_item(tree, hf_descriptor_event_id, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ cancel_indicator = tvb_get_bits8(tvb, offset * 8, 1);
+ proto_tree_add_item(tree, hf_descriptor_cancel_indicator, tvb,
+ offset, 1, ENC_NA);
+ proto_tree_add_item(tree, hf_descriptor_reserved0, tvb,
+ offset, 1, ENC_NA);
+ offset++;
+
+ /* Parse fields for new segmentation events. */
+ if (!cancel_indicator) {
+ psf = tvb_get_bits8(tvb, offset * 8, 1);
+ sdf = tvb_get_bits8(tvb, offset * 8 + 1, 1);
+ dnr = tvb_get_bits8(tvb, offset * 8 + 2, 1);
+ proto_tree_add_item(tree, hf_descriptor_psf, tvb, offset, 1, ENC_NA);
+ proto_tree_add_item(tree, hf_descriptor_segmentation_duration_flag,
+ tvb, offset, 1, ENC_NA);
+ proto_tree_add_item(tree, hf_descriptor_delivery_not_restricted_flag,
+ tvb, offset, 1, ENC_NA);
+
+ /* Parse delivery flags */
+ if (dnr) {
+ proto_tree_add_item(tree, hf_descriptor_reserved1, tvb, offset, 1, ENC_NA);
+ } else {
+ proto_tree_add_item(tree, hf_descriptor_web_delivery_allowed_flag,
+ tvb, offset, 1, ENC_NA);
+ proto_tree_add_item(tree, hf_descriptor_no_regional_blackout_flag,
+ tvb, offset, 1, ENC_NA);
+ proto_tree_add_item(tree, hf_descriptor_archive_allow_flag,
+ tvb, offset, 1, ENC_NA);
+ proto_tree_add_item(tree, hf_descriptor_device_restrictions,
+ tvb, offset, 1, ENC_NA);
+ }
+ offset++;
+
+ /* Parse component segmentation offsets if not switched as a program. */
+ if (!psf) {
+ component_count = tvb_get_guint8(tvb, offset);
+ proto_tree_add_item(tree, hf_descriptor_component_count, tvb,
+ offset, 1, ENC_NA);
+ offset++;
+
+ /* Parse each component */
+ for (component = 0; component < component_count; ++component) {
+ dissected_length = dissect_scte35_component(
+ tvb_new_subset_length(tvb, offset, 6),
+ pinfo, tree, component);
+
+ /* Propagate errors. */
+ if (dissected_length < 1)
+ return dissected_length;
+ offset += dissected_length;
+ }
+ }
+
+ /* Parse segementation duration if present. */
+ if (sdf) {
+ proto_tree_add_item(tree, hf_descriptor_segmentation_duration, tvb,
+ offset, 5, ENC_BIG_ENDIAN);
+ offset += 5;
+ }
+
+ /* Parse UPID. */
+ proto_tree_add_item(tree, hf_descriptor_segmentation_upid_type, tvb,
+ offset, 1, ENC_NA);
+ offset++;
+
+ upid_length = tvb_get_guint8(tvb, offset);
+ proto_tree_add_item(tree, hf_descriptor_segmentation_upid_length, tvb,
+ offset, 1, ENC_NA);
+ offset++;
+
+ /* Only show non-empty UPIDs. */
+ if (upid_length) {
+ proto_tree_add_item(tree, hf_descriptor_segmentation_upid, tvb,
+ offset, upid_length, ENC_NA | ENC_ASCII);
+ offset += upid_length;
+ }
+
+ /* Parse Segment counts. */
+ proto_tree_add_item(tree, hf_descriptor_segmentation_type_id, tvb, offset, 1, ENC_NA);
+ offset++;
+
+ proto_tree_add_item(tree, hf_descriptor_segment_num, tvb, offset, 1, ENC_NA);
+ offset++;
+
+ proto_tree_add_item(tree, hf_descriptor_segments_expected, tvb, offset, 1, ENC_NA);
+ offset++;
+ }
+
+ return offset;
+}
+
+static int
+dissect_scte35_splice_descriptor(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int idx)
+{
+ proto_tree *subtree;
+ tvbuff_t *descriptor_tvb;
+ gint offset = 0, dissected_length = 0;
+ guint8 tag, length = 0;
+
+ /* Create the subtree header for the descriptor. */
+ tag = tvb_get_guint8(tvb, offset);
+ length = tvb_get_guint8(tvb, offset + 1);
+ proto_tree_add_subtree_format(
+ tree, tvb, offset, length + 2, idx, &subtree,
+ "Descriptor %d (0x%02x)", idx, tag);
+
+ /* Parse descriptor headers */
+ proto_tree_add_item(subtree, hf_splice_descriptor_tag, tvb, offset, 1, ENC_NA);
+ offset++;
+
+ proto_tree_add_item(subtree, hf_splice_descriptor_length, tvb, offset, 1, ENC_NA);
+ offset++;
+
+ proto_tree_add_item(subtree, hf_splice_descriptor_identifier, tvb,
+ offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ /* Parse the specific descriptor type. */
+ descriptor_tvb = tvb_new_subset_length(tvb, offset, length - 4);
+ switch (tag) {
+ case SCTE35_AVAIL_DESCRIPTOR:
+ dissected_length = dissect_scte35_avail_descriptor(descriptor_tvb, pinfo, subtree);
+ break;
+
+ case SCTE35_DTMF_DESCRIPTOR:
+ dissected_length = dissect_scte35_dtmf_descriptor(descriptor_tvb, pinfo, subtree);
+ break;
+
+ case SCTE35_SEGMENTATION_DESCRIPTOR:
+ dissected_length = dissect_scte35_segmentation_descriptor(descriptor_tvb, pinfo, subtree);
+ break;
+
+ default:
+ /* Just trust the descriptor_length field. */
+ dissected_length = length - 4;
+ }
+
+ /* Propagate errors. */
+ if (dissected_length < 1)
+ return dissected_length;
+
+ offset += dissected_length;
+ return offset;
+}
+
+static int
+dissect_scte35_splice_info(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
+{
+ gint tvb_len, min_length = SCTE35_SI_MIN_LEN, dissected_length = 0;
+ guint8 table_id, encrypted_packet, command_type;
+ guint16 command_length, descriptor_loop_length, i;
+
+ proto_item *ti;
+ proto_tree *splice_info_tree;
+ gint offset = 0, descriptor_offset = 0;
+ tvbuff_t *command_tvb;
+
+ const gint *section_flags[] = {
+ &hf_section_syntax_indicator,
+ &hf_private_indicator,
+ &hf_reserved,
+ &hf_section_length,
+ NULL
+ };
+
+ const gint *encrypt_flags[] = {
+ &hf_encrypted_packet,
+ &hf_encryption_algorithm,
+ &hf_pts_adjustment,
+ NULL
+ };
+
+ tvb_len = (gint)tvb_reported_length(tvb);
+ if (tvb_len < min_length)
+ return 0;
+
+ /* Pre-fetch a few fields in the message. */
+ table_id = tvb_get_guint8(tvb, offset);
+ encrypted_packet = tvb_get_guint8(tvb, offset + 4) & 0x80;
+ command_type = tvb_get_guint8(tvb, offset + 13);
+ command_length = tvb_get_ntohs(tvb, offset + 11) & 0xFFF;
+
+ /* Check for excessive length before indexing past the command. */
+ min_length += command_length;
+ if (tvb_len < min_length)
+ return 0;
+
+ /* Determine length of descriptors. */
+ descriptor_loop_length = tvb_get_ntohs(tvb, 14 + command_length);
+ min_length += descriptor_loop_length;
+ if (tvb_len < min_length)
+ return 0;
+
+ /* Check for excessive length before parsing the remainder of the packet. */
+ if (encrypted_packet)
+ min_length += 4;
+
+ if (tvb_len < min_length)
+ return 0;
+
+ /* Set up headers in the packet list */
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "SCTE-35");
+ col_add_fstr(pinfo->cinfo, COL_INFO, "Table 0x%02x", table_id);
+
+ /* Create the protocol header. */
+ ti = proto_tree_add_item(tree, proto_scte35, tvb, 0, -1, ENC_NA);
+ splice_info_tree = proto_item_add_subtree(ti, ett_scte35_splice_info_section);
+
+ /* Explain the root fields. */
+ proto_tree_add_item(splice_info_tree, hf_table_id, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset++;
+
+ proto_tree_add_bitmask_list(splice_info_tree, tvb, offset, 2, section_flags, ENC_BIG_ENDIAN);
+ offset += 2;
+
+ proto_tree_add_item(splice_info_tree, hf_protocol_version, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset++;
+
+ /* 7 bits of flags, 33 bits of PTS */
+ proto_tree_add_bitmask_list(splice_info_tree, tvb, offset, 5, encrypt_flags, ENC_BIG_ENDIAN);
+ offset += 5;
+
+ proto_tree_add_item(splice_info_tree, hf_cw_index, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset++;
+
+ /* Two twelve-bit fields */
+ proto_tree_add_item(splice_info_tree, hf_tier, tvb, offset, 2, ENC_BIG_ENDIAN);
+ offset++;
+
+ proto_tree_add_item(splice_info_tree, hf_splice_command_length, tvb, offset, 2, ENC_BIG_ENDIAN);
+ offset += 2;
+
+ proto_tree_add_item(splice_info_tree, hf_splice_command_type, tvb, offset, 1, ENC_BIG_ENDIAN);
+ offset++;
+
+ /* Extract the splice command payload for later use. */
+ command_tvb = tvb_new_subset_length(tvb, offset, command_length);
+ offset += command_length;
+
+ /* Process the descriptor loop. */
+ proto_tree_add_item(splice_info_tree, hf_descriptor_loop_length, tvb, offset, 2, ENC_BIG_ENDIAN);
+ offset += 2;
+
+ /* Explain each descriptor. */
+ for (i = 0, descriptor_offset = offset;
+ descriptor_offset < offset + descriptor_loop_length;
+ ++i) {
+ dissected_length = dissect_scte35_splice_descriptor( tvb_new_subset_remaining(tvb, descriptor_offset),
+ pinfo, splice_info_tree, i);
+
+ /* Escalate failure. */
+ if (dissected_length < 1)
+ return offset;
+ descriptor_offset += dissected_length;
+ }
+ offset += descriptor_loop_length;
+
+ /* Explain the packet footer. */
+ if (encrypted_packet) {
+ proto_tree_add_item(splice_info_tree, hf_e_crc32, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+ }
+ proto_tree_add_item(splice_info_tree, hf_crc32, tvb, offset, 4, ENC_BIG_ENDIAN);
+ offset += 4;
+
+ /* We've reached the end. Run a child dissector for the splice command. */
+ dissector_try_uint_new(scte35_cmd_dissector_table, command_type, command_tvb, pinfo, tree,
+ FALSE, NULL);
+
+ return offset;
+}
+
+
+void
+proto_register_scte35(void)
+{
+ static gint *ett[] = {
+ &ett_scte35_splice_info_section,
+ };
+
+ static hf_register_info hf[] = {
+ /* MPEG Section Table Headers. Field members taken from mpeg-sect.c. */
+ {&hf_table_id,
+ {"Table ID", "scte35.tid", FT_UINT8, BASE_HEX,
+ NULL, 0, NULL, HFILL}},
+ {&hf_section_syntax_indicator,
+ {"Section Syntax Identifier", "scte35.syntax_indicator", FT_BOOLEAN,
+ 16, TFS(&tfs_section_syntax_indicator), 0x8000, NULL, HFILL }},
+ {&hf_private_indicator,
+ {"Private Indicator", "scte35.private", FT_BOOLEAN,
+ 16, TFS(&tfs_private_indicator), 0x4000, NULL, HFILL }},
+ {&hf_reserved,
+ {"Reserved", "scte35.reserved", FT_UINT16, BASE_HEX,
+ NULL, 0x3000, NULL, HFILL }},
+ {&hf_section_length,
+ {"Section length", "scte35.len", FT_UINT16, BASE_DEC,
+ NULL, 0x0FFF, NULL, HFILL}},
+
+ /* SCTE35-specific headers */
+ {&hf_protocol_version,
+ {"Protocol Version", "scte35.protocol_version", FT_UINT8, BASE_DEC,
+ NULL, 0, NULL, HFILL}},
+ {&hf_encrypted_packet,
+ {"Encrypted Packet", "scte35.encrypted_packet", FT_BOOLEAN, 40,
+ TFS(&tfs_encrypted_packet), G_GUINT64_CONSTANT(0x8000000000), NULL, HFILL}},
+ {&hf_encryption_algorithm,
+ {"Encryption Algorithm", "scte35.encryption_algorithm", FT_UINT40,
+ BASE_HEX | BASE_RANGE_STRING, RVALS(rv_encryption_algorithm),
+ G_GUINT64_CONSTANT(0x7E00000000), NULL, HFILL}},
+ {&hf_pts_adjustment,
+ {"PTS Adjustment", "scte35.pts_adjustment", FT_UINT40, BASE_DEC,
+ NULL, G_GUINT64_CONSTANT(0x1FFFFFFFF), NULL, HFILL}},
+ {&hf_cw_index,
+ {"Control Word Index", "scte35.cw_index", FT_UINT8, BASE_HEX,
+ NULL, 0, NULL, HFILL}},
+ {&hf_tier,
+ {"Authorisation Tier", "scte35.tier", FT_UINT16, BASE_DEC,
+ NULL, 0xFFF0, NULL, HFILL}},
+ {&hf_splice_command_length,
+ {"Command Length", "scte35.splice_command_length", FT_UINT16, BASE_DEC,
+ NULL, 0xFFF, NULL, HFILL}},
+ {&hf_splice_command_type,
+ {"Command Type", "scte35.splice_command_type", FT_UINT8,
+ BASE_HEX | BASE_RANGE_STRING, RVALS(rv_splice_command_type),
+ 0, NULL, HFILL}},
+
+ /* Splice command payload goes here via the dissector table. */
+
+ /* Descriptor loop header. */
+ {&hf_descriptor_loop_length,
+ {"Descriptor Loop Length", "scte35.desc_len", FT_UINT16, BASE_DEC,
+ NULL, 0, NULL, HFILL}},
+
+ /* Descriptor loop entries. */
+ {&hf_splice_descriptor_tag,
+ {"Tag", "scte35.splice_descriptor.tag", FT_UINT8,
+ BASE_HEX | BASE_RANGE_STRING, RVALS(rv_splice_descriptor_tag),
+ 0, NULL, HFILL}},
+ {&hf_splice_descriptor_length,
+ {"Length", "scte35.splice_descriptor.length", FT_UINT8, BASE_DEC,
+ NULL, 0, NULL, HFILL}},
+ {&hf_splice_descriptor_identifier,
+ {"Descriptor ID", "scte35.splice_descriptor.identifier", FT_UINT32,
+ BASE_HEX, NULL, 0, NULL, HFILL}},
+
+ /* avail_descriptor */
+ {&hf_descriptor_provider_avail_id,
+ {"Provider Avail ID", "scte35.splice_descriptor.provider_avail_id",
+ FT_UINT32, BASE_HEX, NULL, 0, NULL, HFILL}},
+
+ /* dtmf_descriptor */
+ {&hf_descriptor_preroll,
+ {"Preroll", "scte35.splice_descriptor.preroll",
+ FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL}},
+ {&hf_descriptor_dtmf_count,
+ {"DTMF Count", "scte35.splice_descriptor.dtmf_count",
+ FT_UINT8, BASE_DEC, NULL, 0xE0, NULL, HFILL}},
+ {&hf_descriptor_dtmf_reserved,
+ {"DTMF Reserved", "scte35.splice_descriptor.dtmf_reserved",
+ FT_UINT8, BASE_HEX, NULL, 0x1F, NULL, HFILL}},
+ {&hf_descriptor_dtmf,
+ {"DTMF", "scte35.splice_descriptor.dtmf",
+ FT_STRING, 0, NULL, 0, NULL, HFILL}},
+
+ /* segmentation_descriptor */
+ {&hf_descriptor_event_id,
+ {"Segmentation Event ID", "scte35.splice_descriptor.event_id",
+ FT_UINT32, BASE_HEX, NULL, 0, NULL, HFILL}},
+ {&hf_descriptor_cancel_indicator,
+ {"Cancel Indicator", "scte35.splice_descriptor.cancel_indicator",
+ FT_BOOLEAN, 8, TFS(&tfs_descriptor_cancel_indicator), 0x80, NULL, HFILL}},
+ {&hf_descriptor_reserved0,
+ {"Reserved", "scte35.splice_descriptor.reserved0",
+ FT_UINT8, BASE_HEX, NULL, 0x7F, NULL, HFILL}},
+ {&hf_descriptor_psf,
+ {"Program Segmentation Flag", "scte35.splice_descriptor.psf",
+ FT_BOOLEAN, 8, TFS(&tfs_descriptor_psf), 0x80, NULL, HFILL}},
+ {&hf_descriptor_segmentation_duration_flag,
+ {"Segmentation Duration Flag", "scte35.splice_descriptor.sdf",
+ FT_BOOLEAN, 8, TFS(&tfs_descriptor_sdf), 0x40, NULL, HFILL}},
+ {&hf_descriptor_delivery_not_restricted_flag,
+ {"Delivery not Restricted", "scte35.splice_descriptor.dnr",
+ FT_BOOLEAN, 8, TFS(&tfs_descriptor_dnr), 0x20, NULL, HFILL}},
+ {&hf_descriptor_web_delivery_allowed_flag,
+ {"Web Delivery Allowed", "scte35.splice_descriptor.web_delivery_allowed",
+ FT_BOOLEAN, 8, TFS(&tfs_descriptor_web), 0x10, NULL, HFILL}},
+ {&hf_descriptor_no_regional_blackout_flag,
+ {"No Regional Blackout", "scte35.splice_descriptor.no_regional_blackout",
+ FT_BOOLEAN, 8, TFS(&tfs_descriptor_blackout), 0x08, NULL, HFILL}},
+ {&hf_descriptor_archive_allow_flag,
+ {"Archive Allowed", "scte35.splice_descriptor.archive_allowed",
+ FT_BOOLEAN, 8, TFS(&tfs_descriptor_archive), 0x04, NULL, HFILL}},
+ {&hf_descriptor_device_restrictions,
+ {"Device Restrictions", "scte35.splice_descriptor.device_restrictions",
+ FT_UINT8, BASE_HEX | BASE_RANGE_STRING,
+ RVALS(scte35_device_restrictions), 0x03, NULL, HFILL}},
+ {&hf_descriptor_reserved1,
+ {"Reserved", "scte35.splice_descriptor.reserved1",
+ FT_UINT8, BASE_HEX, NULL, 0x1F, NULL, HFILL}},
+ {&hf_descriptor_component_count,
+ {"Component Count", "scte35.splice_descriptor.component_count",
+ FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL}},
+ {&hf_descriptor_component_tag,
+ {"Component Tag", "scte35.splice_descriptor.component.tag",
+ FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL}},
+ {&hf_descriptor_component_reserved,
+ {"Reserved", "scte35.splice_descriptor.component.reserved",
+ FT_UINT8, BASE_HEX, NULL, 0xFE, NULL, HFILL}},
+ {&hf_descriptor_component_pts_offset,
+ {"PTS Offset", "scte35.splice_descriptor.component.pts_offset",
+ FT_UINT64, BASE_DEC, NULL, 0x1FFFFFFFF, NULL, HFILL}},
+ {&hf_descriptor_segmentation_duration,
+ {"Segmentation Duration", "scte35.splice_descriptor.segmentation_duration",
+ FT_UINT64, BASE_DEC, NULL, 0xFFFFFFFFFF, NULL, HFILL}},
+ {&hf_descriptor_segmentation_upid_type,
+ {"UPID Type", "scte35.splice_descriptor.upid_type",
+ FT_UINT8, BASE_HEX | BASE_RANGE_STRING,
+ RVALS(scte35_segmentation_upid_type), 0, NULL, HFILL}},
+ {&hf_descriptor_segmentation_upid_length,
+ {"UPID Length", "scte35.splice_descriptor.upid_length",
+ FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL}},
+ {&hf_descriptor_segmentation_upid,
+ {"UPID", "scte35.splice_descriptor.upid",
+ FT_STRING, 0, NULL, 0, NULL, HFILL}},
+ {&hf_descriptor_segmentation_type_id,
+ {"Segmentation Type", "scte35.splice_descriptor.segmentation_type_id",
+ FT_UINT8, BASE_HEX | BASE_RANGE_STRING,
+ RVALS(scte35_segmentation_type_id), 0, NULL, HFILL}},
+ {&hf_descriptor_segment_num,
+ {"Segment Number", "scte35.splice_descriptor.segment_num",
+ FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL}},
+ {&hf_descriptor_segments_expected,
+ {"Segments Expected", "scte35.splice_descriptor.segments_expected",
+ FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL}},
+
+ /* Optional alignment padding, encrypted CRC32 suffix. */
+ {&hf_e_crc32,
+ {"Encrypted CRC32", "scte35.ecrc32", FT_UINT32, BASE_HEX,
+ NULL, 0, NULL, HFILL}},
+
+ /* MPEG Section table CRC suffix */
+ {&hf_crc32,
+ {"CRC32", "scte35.crc", FT_UINT32, BASE_HEX, NULL, 0, NULL, HFILL}},
+ };
+
+ /* Allocate a protocol number. */
+ proto_scte35 = proto_register_protocol(
+ "SCTE-35 Splice Information", /* name */
+ "SCTE 35", /* short name */
+ "scte35" /* abbreviation */
+ );
+ scte35_handle = register_dissector("scte35", dissect_scte35_splice_info, proto_scte35);
+
+ /* Register groups and fields. */
+ proto_register_subtree_array(ett, array_length(ett));
+ proto_register_field_array(proto_scte35, hf, array_length(hf));
+
+ /* Allow other protocols to discriminate against the splice command type
+ * to further dissect the payload.
+ */
+ scte35_cmd_dissector_table = register_dissector_table(
+ "scte35.splice_command_type", "SCTE-35 Command", proto_scte35, FT_UINT8,
+ BASE_HEX, DISSECTOR_TABLE_NOT_ALLOW_DUPLICATE);
+}
+
+void
+proto_reg_handoff_scte35(void)
+{
+ /* Invoke the splice_info_section parser for a section table with ID 0xFC */
+ dissector_add_uint("mpeg_sect.tid", SCTE35_TABLE_ID, scte35_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:
+ */