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wireshark/epan/dissectors/packet-evrc.c

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/* packet-evrc.c
* Routines for:
* EVRC EVRC-B EVRC-WB EVRC-NW EVRC-NW2K
* RTP payload header dissection
*
* Copyright 2008, Michael Lum <michael.lum [AT] shaw.ca>
* In association with Star Solutions
*
* Title 3GPP2 Other
*
* Enhanced Variable Rate Codec, Speech Service Options 3, 68, 70, 73 and 77
* for Wideband Spread Spectrum Digital Systems
* 3GPP2 C.S0014-E v1.0 TIA-127-?
*
* RFC 3558 http://www.ietf.org/rfc/rfc3558.txt?number=3558
* RFC 4788 http://www.ietf.org/rfc/rfc4788.txt?number=4788
* RFC 5188 http://www.ietf.org/rfc/rfc5188.txt?number=5188
* draft-agupta-payload-rtp-evrc-nw2k-00
*
* 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>
#include <epan/prefs.h>
#include <epan/expert.h>
#include <wsutil/str_util.h>
/* PROTOTYPES/FORWARDS */
void proto_register_evrc(void);
void proto_reg_handoff_evrc(void);
static const value_string evrc_frame_type_vals[] = {
{ 0, "Blank (0 bits)" },
{ 1, "1/8 Rate (16 bits)" },
{ 2, "Not valid (1/4 Rate : 40 bits)" },
{ 3, "1/2 Rate (80 bits)" },
{ 4, "Full Rate (171 bits; + 5 bits padding)" },
{ 5, "Erasure (0 bits)" },
{ 0, NULL }
};
static const value_string evrc_b_frame_type_vals[] = {
{ 0, "Blank (0 bits)" },
{ 1, "1/8 Rate (16 bits)" },
{ 2, "1/4 Rate (40 bits)" },
{ 3, "1/2 Rate (80 bits)" },
{ 4, "Full Rate (171 bits; + 5 bits padding)" },
{ 5, "Erasure (0 bits)" },
{ 0, NULL }
};
static const value_string evrc_legacy_frame_type_vals[] = {
{ 0, "Blank (0 bits)" },
{ 1, "1/8 Rate (16 bits)" },
{ 3, "1/2 Rate (80 bits)" },
{ 4, "Full Rate (171 bits; + 5 bits padding)" },
{ 14, "Erasure (0 bits)" },
{ 0, NULL }
};
static const value_string evrc_mode_request_vals[] = {
{ 0, "Rate Reduction 0 (Full Rate)" },
{ 1, "Rate Reduction 1" },
{ 2, "Rate Reduction 2" },
{ 3, "Rate Reduction 3" },
{ 4, "Rate Reduction 4" },
{ 0, NULL }
};
static const value_string evrc_b_mode_request_vals[] = {
{ 0, "Encoder Operating Point 0 (Full Rate)" },
{ 1, "Encoder Operating Point 1" },
{ 2, "Encoder Operating Point 2" },
{ 3, "Encoder Operating Point 3" },
{ 4, "Encoder Operating Point 4" },
{ 5, "Encoder Operating Point 5" },
{ 6, "Encoder Operating Point 6" },
{ 7, "Encoder Operating Point 7 (1/2 rate max)" },
{ 0, NULL }
};
static const value_string evrc_wb_mode_request_vals[] = {
{ 0, "Encoder Operating Point 0 (Full Rate)" },
{ 1, "Reserved" },
{ 2, "Reserved" },
{ 3, "Reserved" },
{ 4, "Encoder Operating Point 4" },
{ 5, "Reserved" },
{ 6, "Reserved" },
{ 7, "Encoder Operating Point 7 (1/2 rate max)" },
{ 0, NULL }
};
static const value_string evrc_nw_mode_request_vals[] = {
{ 0, "Encoder Operating Point 0 (EVRC-WB COP0)" },
{ 1, "Encoder Operating Point 1 (EVRC-B COP0/EVRC-WB COP4)" },
{ 2, "Encoder Operating Point 2 (EVRC-B COP2)" },
{ 3, "Encoder Operating Point 3 (EVRC-B COP3)" },
{ 4, "Encoder Operating Point 4 (EVRC-B COP4)" },
{ 5, "Encoder Operating Point 5 (EVRC-B COP5)" },
{ 6, "Encoder Operating Point 6 (EVRC-B COP6)" },
{ 7, "Encoder Operating Point 7 (EVRC-B COP7/EVRC-WB COP7)" },
{ 0, NULL }
};
static const value_string evrc_nw2k_mode_request_vals[] = {
{ 0, "Encoder Operating Point 0 (EVRC-WB COP0)" },
{ 1, "Encoder Operating Point 1 (EVRC-B COP0/EVRC-WB COP4)" },
{ 2, "Encoder Operating Point 2 (EVRC-B COP2)" },
{ 3, "Encoder Operating Point 3 (EVRC-B COP3/EVRC-NW2k)" },
{ 4, "Encoder Operating Point 4 (EVRC-B COP4)" },
{ 5, "Encoder Operating Point 5 (EVRC-B COP5)" },
{ 6, "Encoder Operating Point 6 (EVRC-B COP6)" },
{ 7, "Encoder Operating Point 7 (EVRC-B COP7/EVRC-WB COP7)" },
{ 0, NULL }
};
static const true_false_string toc_further_entries_bit_vals = {
"More ToC entries follow",
"End of ToC entries"
};
static const true_false_string evrc_nw2k_enc_capability_bit_vals = {
"Mode-0 wideband encoding capable",
"Mode-0 wideband encoding incapable (i.e. narrowband encoding only)"
};
typedef enum
{
EVRC_VARIANT_EVRC,
EVRC_VARIANT_EVRC_B,
EVRC_VARIANT_EVRC_WB,
EVRC_VARIANT_EVRC_NW,
EVRC_VARIANT_EVRC_NW2k,
EVRC_VARIANT_EVRC_LEGACY
}
evrc_variant_t;
/* Initialize the protocol and registered fields */
static int proto_evrc = -1;
static int hf_evrc_reserved = -1;
static int hf_evrc_reserved_2k = -1;
static int hf_evrc_enc_capability_2k = -1;
static int hf_evrc_interleave_length = -1;
static int hf_evrc_interleave_index = -1;
static int hf_evrc_mode_request = -1;
static int hf_evrc_b_mode_request = -1;
static int hf_evrc_wb_mode_request = -1;
static int hf_evrc_nw_mode_request = -1;
static int hf_evrc_nw2k_mode_request = -1;
static int hf_evrc_frame_count = -1;
static int hf_evrc_toc_frame_type_high = -1;
static int hf_evrc_toc_frame_type_low = -1;
static int hf_evrc_b_toc_frame_type_high = -1;
static int hf_evrc_b_toc_frame_type_low = -1;
static int hf_evrc_padding = -1;
static int hf_evrc_speech_data = -1;
static int hf_evrc_legacy_toc_fe_ind = -1;
static int hf_evrc_legacy_toc_reduc_rate = -1;
static int hf_evrc_legacy_toc_frame_type = -1;
/* Initialize the subtree pointers */
static gint ett_evrc = -1;
static gint ett_toc = -1;
static expert_field ei_evrc_unknown_variant = EI_INIT;
/*
* Variables to allow for proper deletion of dissector registration when
* the user changes values
*/
static gboolean legacy_pt_60 = FALSE;
static guint8
evrc_frame_type_to_octs(guint8 frame_type)
{
switch (frame_type)
{
default:
break;
case 1: /* 1/8 rate */
return(2);
case 2: /* 1/4 rate */
return(5);
case 3: /* 1/2 rate */
return(10);
case 4: /* full rate */
return(22);
}
return(0);
}
/* GENERIC EVRC DISSECTOR FUNCTIONS */
static void
dissect_evrc_aux(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, evrc_variant_t evrc_variant)
{
guint8 oct;
guint8 frame_count;
guint8 i;
guint32 offset, saved_offset;
gboolean further_entries;
guint32 len;
proto_item *item = NULL;
proto_tree *evrc_tree = NULL;
proto_tree *toc_tree = NULL;
int hf_mode_request;
int hf_toc_frame_type_high;
int hf_toc_frame_type_low;
/*
* assumed max number of speech frames based on
* frame count being 5 bits + 1
*/
guint8 speech_data_len[0x20];
col_set_str(pinfo->cinfo, COL_PROTOCOL, "EVRC");
if (!tree) return;
offset = 0;
memset(speech_data_len, 0, sizeof(speech_data_len));
len = tvb_reported_length(tvb);
item = proto_tree_add_item(tree, proto_evrc, tvb, 0, len, ENC_NA);
evrc_tree = proto_item_add_subtree(item, ett_evrc);
if (evrc_variant == EVRC_VARIANT_EVRC_LEGACY)
{
/* legacy 'payload type 60' draft-ietf-avt-evrc-07.txt header format */
proto_tree_add_item(evrc_tree, hf_evrc_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(evrc_tree, hf_evrc_interleave_length, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(evrc_tree, hf_evrc_interleave_index, tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
frame_count = 0;
further_entries = TRUE;
while (further_entries && (frame_count < sizeof(speech_data_len)) &&
((len - offset) > 0))
{
toc_tree =
proto_tree_add_subtree_format(evrc_tree, tvb, offset, 1, ett_toc, NULL, "ToC [%u]", frame_count+1);
proto_tree_add_item(toc_tree, hf_evrc_legacy_toc_fe_ind, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(toc_tree, hf_evrc_legacy_toc_reduc_rate, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(toc_tree, hf_evrc_legacy_toc_frame_type, tvb, offset, 1, ENC_BIG_ENDIAN);
oct = tvb_get_guint8(tvb, offset);
further_entries = (oct & 0x80) ? TRUE : FALSE;
speech_data_len[frame_count] = evrc_frame_type_to_octs((guint8)(oct & 0x7f));
frame_count++;
offset++;
}
}
else
{
/* RFC 3558 header format */
switch (evrc_variant)
{
default:
proto_tree_add_expert(evrc_tree, pinfo, &ei_evrc_unknown_variant, tvb, offset, len);
return;
case EVRC_VARIANT_EVRC:
hf_mode_request = hf_evrc_mode_request;
hf_toc_frame_type_high = hf_evrc_toc_frame_type_high;
hf_toc_frame_type_low = hf_evrc_toc_frame_type_low;
proto_tree_add_item(evrc_tree, hf_evrc_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
break;
case EVRC_VARIANT_EVRC_B:
hf_mode_request = hf_evrc_b_mode_request;
hf_toc_frame_type_high = hf_evrc_b_toc_frame_type_high;
hf_toc_frame_type_low = hf_evrc_b_toc_frame_type_low;
proto_tree_add_item(evrc_tree, hf_evrc_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
break;
case EVRC_VARIANT_EVRC_WB:
hf_mode_request = hf_evrc_wb_mode_request;
hf_toc_frame_type_high = hf_evrc_b_toc_frame_type_high;
hf_toc_frame_type_low = hf_evrc_b_toc_frame_type_low;
proto_tree_add_item(evrc_tree, hf_evrc_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
break;
case EVRC_VARIANT_EVRC_NW:
hf_mode_request = hf_evrc_nw_mode_request;
hf_toc_frame_type_high = hf_evrc_b_toc_frame_type_high;
hf_toc_frame_type_low = hf_evrc_b_toc_frame_type_low;
proto_tree_add_item(evrc_tree, hf_evrc_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
break;
case EVRC_VARIANT_EVRC_NW2k:
hf_mode_request = hf_evrc_nw2k_mode_request;
hf_toc_frame_type_high = hf_evrc_b_toc_frame_type_high;
hf_toc_frame_type_low = hf_evrc_b_toc_frame_type_low;
proto_tree_add_item(evrc_tree, hf_evrc_reserved_2k, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(evrc_tree, hf_evrc_enc_capability_2k, tvb, offset, 1, ENC_BIG_ENDIAN);
break;
}
proto_tree_add_item(evrc_tree, hf_evrc_interleave_length, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(evrc_tree, hf_evrc_interleave_index, tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
proto_tree_add_item(evrc_tree, hf_mode_request, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(evrc_tree, hf_evrc_frame_count, tvb, offset, 1, ENC_BIG_ENDIAN);
/*
* number of frames in PACKET is frame_count + 1
*/
frame_count = (tvb_get_guint8(tvb, offset) & 0x1f) + 1;
offset++;
saved_offset = offset;
toc_tree =
proto_tree_add_subtree_format(evrc_tree, tvb, offset, -1, ett_toc, &item, "ToC - %u frame%s",
frame_count, plurality(frame_count, "", "s"));
i = 0;
while ((i < frame_count) &&
((len - offset) > 0))
{
oct = tvb_get_guint8(tvb, offset);
proto_tree_add_item(toc_tree, hf_toc_frame_type_high, tvb, offset, 1, ENC_BIG_ENDIAN);
speech_data_len[i] = evrc_frame_type_to_octs((guint8)((oct & 0xf0) >> 4));
i++;
if (i < frame_count)
{
/* even number of frames */
proto_tree_add_item(toc_tree, hf_toc_frame_type_low, tvb, offset, 1, ENC_BIG_ENDIAN);
speech_data_len[i] = evrc_frame_type_to_octs((guint8)(oct & 0x0f));
i++;
}
offset++;
}
if (frame_count & 0x01)
{
/* odd number of frames */
proto_tree_add_item(toc_tree, hf_evrc_padding, tvb, offset-1, 1, ENC_BIG_ENDIAN);
}
proto_item_set_len(item, offset - saved_offset);
}
i = 0;
while ((i < frame_count) &&
((len - offset) >= speech_data_len[i]))
{
proto_tree_add_bytes_format(evrc_tree, hf_evrc_speech_data, tvb, offset, speech_data_len[i], NULL, "Speech Data [%u]", i+1);
offset += speech_data_len[i];
i++;
}
}
static int
dissect_evrc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
dissect_evrc_aux(tvb, pinfo, tree, EVRC_VARIANT_EVRC);
return tvb_captured_length(tvb);
}
static int
dissect_evrcb(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
dissect_evrc_aux(tvb, pinfo, tree, EVRC_VARIANT_EVRC_B);
return tvb_captured_length(tvb);
}
static int
dissect_evrcwb(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
dissect_evrc_aux(tvb, pinfo, tree, EVRC_VARIANT_EVRC_WB);
return tvb_captured_length(tvb);
}
static int
dissect_evrcnw(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
dissect_evrc_aux(tvb, pinfo, tree, EVRC_VARIANT_EVRC_NW);
return tvb_captured_length(tvb);
}
static int
dissect_evrcnw2k(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
dissect_evrc_aux(tvb, pinfo, tree, EVRC_VARIANT_EVRC_NW2k);
return tvb_captured_length(tvb);
}
static int
dissect_evrc_legacy(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
dissect_evrc_aux(tvb, pinfo, tree, EVRC_VARIANT_EVRC_LEGACY);
return tvb_captured_length(tvb);
}
/* Register the protocol with Wireshark */
void
proto_register_evrc(void)
{
module_t *evrc_module;
/* Setup list of header fields */
static hf_register_info hf[] =
{
{ &hf_evrc_reserved,
{ "Reserved", "evrc.reserved",
FT_UINT8, BASE_HEX, NULL, 0xc0,
"Reserved bits", HFILL }
},
{ &hf_evrc_reserved_2k,
{ "Reserved", "evrc.reserved",
FT_UINT8, BASE_HEX, NULL, 0x80,
"Reserved bits", HFILL }
},
{ &hf_evrc_enc_capability_2k,
{ "Encoding Capability", "evrc.enc_capability",
FT_BOOLEAN, 8, TFS(&evrc_nw2k_enc_capability_bit_vals), 0x40,
"Encoding Capability Identification", HFILL }
},
{ &hf_evrc_interleave_length,
{ "Interleave Length", "evrc.interleave_len",
FT_UINT8, BASE_DEC, NULL, 0x38,
"Interleave length bits", HFILL }
},
{ &hf_evrc_interleave_index,
{ "Interleave Index", "evrc.interleave_idx",
FT_UINT8, BASE_DEC, NULL, 0x07,
"Interleave index bits", HFILL }
},
{ &hf_evrc_mode_request,
{ "Mode Request", "evrc.mode_request",
FT_UINT8, BASE_DEC, VALS(evrc_mode_request_vals), 0xe0,
"Mode Request bits", HFILL }
},
{ &hf_evrc_b_mode_request,
{ "Mode Request", "evrc.b.mode_request",
FT_UINT8, BASE_DEC, VALS(evrc_b_mode_request_vals), 0xe0,
"Mode Request bits", HFILL }
},
{ &hf_evrc_wb_mode_request,
{ "Mode Request", "evrc.wb.mode_request",
FT_UINT8, BASE_DEC, VALS(evrc_wb_mode_request_vals), 0xe0,
"Mode Request bits", HFILL }
},
{ &hf_evrc_nw_mode_request,
{ "Mode Request", "evrc.nw.mode_request",
FT_UINT8, BASE_DEC, VALS(evrc_nw_mode_request_vals), 0xe0,
"Mode Request bits", HFILL }
},
{ &hf_evrc_nw2k_mode_request,
{ "Mode Request", "evrc.nw2k.mode_request",
FT_UINT8, BASE_DEC, VALS(evrc_nw2k_mode_request_vals), 0xe0,
"Mode Request bits", HFILL }
},
{ &hf_evrc_frame_count,
{ "Frame Count (0 means 1 frame)", "evrc.frame_count",
FT_UINT8, BASE_DEC, NULL, 0x1f,
"Frame Count bits, a value of 0 means 1 frame", HFILL }
},
{ &hf_evrc_toc_frame_type_high,
{ "ToC Frame Type", "evrc.toc.frame_type_hi",
FT_UINT8, BASE_DEC, VALS(evrc_frame_type_vals), 0xf0,
"ToC Frame Type bits", HFILL }
},
{ &hf_evrc_toc_frame_type_low,
{ "ToC Frame Type", "evrc.toc.frame_type_lo",
FT_UINT8, BASE_DEC, VALS(evrc_frame_type_vals), 0x0f,
"ToC Frame Type bits", HFILL }
},
{ &hf_evrc_b_toc_frame_type_high,
{ "ToC Frame Type", "evrc.b.toc.frame_type_hi",
FT_UINT8, BASE_DEC, VALS(evrc_b_frame_type_vals), 0xf0,
"ToC Frame Type bits", HFILL }
},
{ &hf_evrc_b_toc_frame_type_low,
{ "ToC Frame Type", "evrc.b.toc.frame_type_lo",
FT_UINT8, BASE_DEC, VALS(evrc_b_frame_type_vals), 0x0f,
"ToC Frame Type bits", HFILL }
},
{ &hf_evrc_padding,
{ "Padding", "evrc.padding",
FT_UINT8, BASE_DEC, NULL, 0x0f,
"Padding bits", HFILL }
},
{ &hf_evrc_speech_data,
{ "Speech data", "evrc.speech_data",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_evrc_legacy_toc_fe_ind,
{ "ToC Further Entries Indicator", "evrc.legacy.toc.further_entries_ind",
FT_BOOLEAN, 8, TFS(&toc_further_entries_bit_vals), 0x80,
"ToC Further Entries Indicator bit", HFILL }
},
{ &hf_evrc_legacy_toc_reduc_rate,
{ "ToC Reduced Rate", "evrc.legacy.toc.reduced_rate",
FT_UINT8, BASE_DEC, NULL, 0x40,
"ToC Reduced Rate bits", HFILL }
},
{ &hf_evrc_legacy_toc_frame_type,
{ "ToC Frame Type", "evrc.legacy.toc.frame_type",
FT_UINT8, BASE_DEC, VALS(evrc_legacy_frame_type_vals), 0x3f,
"ToC Frame Type bits", HFILL }
}
};
static ei_register_info ei[] = {
{ &ei_evrc_unknown_variant,
{ "evrc.unknown_variant", PI_UNDECODED, PI_WARN,
"Variant Unknown/Unsupported - dissector bug/later version spec (report to wireshark.org)",
EXPFILL }
}
};
expert_module_t *expert_evrc;
/* Setup protocol subtree array */
static gint *ett[] =
{
&ett_evrc,
&ett_toc
};
/* Register the protocol name and description */
proto_evrc =
proto_register_protocol("Enhanced Variable Rate Codec", "EVRC", "evrc");
proto_register_field_array(proto_evrc, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_evrc =
expert_register_protocol(proto_evrc);
expert_register_field_array(expert_evrc, ei, array_length(ei));
/*
* setup for preferences
*/
evrc_module = prefs_register_protocol(proto_evrc, proto_reg_handoff_evrc);
prefs_register_bool_preference(evrc_module,
"legacy_pt_60",
"Add dissector for static payload type 60 as legacy EVRC (non-RFC3558)",
"Whether the EVRC dissector should process payload type 60 as legacy EVRC packets",
&legacy_pt_60);
}
void
proto_reg_handoff_evrc(void)
{
static gboolean evrc_prefs_initialized = FALSE;
static dissector_handle_t evrc_legacy_handle;
if (!evrc_prefs_initialized)
{
dissector_handle_t evrc_handle;
dissector_handle_t evrcb_handle;
dissector_handle_t evrcwb_handle;
dissector_handle_t evrcnw_handle;
dissector_handle_t evrcnw2k_handle;
evrc_handle = create_dissector_handle(dissect_evrc, proto_evrc);
evrcb_handle = create_dissector_handle(dissect_evrcb, proto_evrc);
evrcwb_handle = create_dissector_handle(dissect_evrcwb, proto_evrc);
evrcnw_handle = create_dissector_handle(dissect_evrcnw, proto_evrc);
evrcnw2k_handle = create_dissector_handle(dissect_evrcnw2k, proto_evrc);
evrc_legacy_handle = create_dissector_handle(dissect_evrc_legacy, proto_evrc);
/* header-full mime types */
dissector_add_string("rtp_dyn_payload_type", "EVRC", evrc_handle);
dissector_add_string("rtp_dyn_payload_type", "EVRCB", evrcb_handle);
dissector_add_string("rtp_dyn_payload_type", "EVRCWB", evrcwb_handle);
dissector_add_string("rtp_dyn_payload_type", "EVRCNW", evrcnw_handle);
dissector_add_string("rtp_dyn_payload_type", "EVRCNW2K", evrcnw2k_handle);
evrc_prefs_initialized = TRUE;
}
else
{
dissector_delete_uint("rtp.pt", 60, evrc_legacy_handle);
}
if (legacy_pt_60)
{
dissector_add_uint("rtp.pt", 60, evrc_legacy_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:
*/
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