forked from osmocom/wireshark
714 lines
22 KiB
C
714 lines
22 KiB
C
/* MPEG Packetized Elementary Stream (PES) packet decoder.
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* Written by Shaun Jackman <sjackman@gmail.com>.
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* Copyright 2007 Shaun Jackman
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/asn1.h>
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#include "packet-per.h"
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#include "packet-mpeg-pes-hf.c"
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#include "packet-mpeg-pes-ett.c"
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#include "packet-mpeg-pes-fn.c"
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static int proto_mpeg = -1;
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static int proto_mpeg_pes = -1;
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static int ett_mpeg_pes_pack_header = -1;
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static int ett_mpeg_pes_header_data = -1;
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static int ett_mpeg_pes_trick_mode = -1;
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static int hf_mpeg_pes_pack_header = -1;
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static int hf_mpeg_pes_scr = -1;
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static int hf_mpeg_pes_program_mux_rate = -1;
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static int hf_mpeg_pes_stuffing_length = -1;
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static int hf_mpeg_pes_stuffing = -1;
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static int hf_mpeg_pes_extension = -1;
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static int hf_mpeg_pes_header_data = -1;
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static int hf_mpeg_pes_pts = -1;
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static int hf_mpeg_pes_dts = -1;
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static int hf_mpeg_pes_escr = -1;
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static int hf_mpeg_pes_es_rate = -1;
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static int hf_mpeg_pes_dsm_trick_mode = -1;
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static int hf_mpeg_pes_dsm_trick_mode_control = -1;
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static int hf_mpeg_pes_dsm_trick_mode_field_id = -1;
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static int hf_mpeg_pes_dsm_trick_mode_intra_slice_refresh = -1;
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static int hf_mpeg_pes_dsm_trick_mode_frequency_truncation = -1;
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static int hf_mpeg_pes_dsm_trick_mode_rep_cntrl = -1;
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static int hf_mpeg_pes_copy_info = -1;
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static int hf_mpeg_pes_crc = -1;
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static int hf_mpeg_pes_extension_flags = -1;
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static int hf_mpeg_pes_private_data = -1;
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static int hf_mpeg_pes_pack_length = -1;
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static int hf_mpeg_pes_sequence = -1;
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static int hf_mpeg_pes_pstd_buffer = -1;
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static int hf_mpeg_pes_extension2 = -1;
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static int hf_mpeg_pes_padding = -1;
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static int hf_mpeg_pes_data = -1;
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static int hf_mpeg_video_sequence_header = -1;
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static int hf_mpeg_video_sequence_extension = -1;
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static int hf_mpeg_video_group_of_pictures = -1;
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static int hf_mpeg_video_picture = -1;
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static int hf_mpeg_video_quantization_matrix = -1;
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static int hf_mpeg_video_data = -1;
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enum { PES_PREFIX = 1 };
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enum {
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STREAM_PICTURE = 0x00,
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STREAM_SEQUENCE = 0xb3,
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STREAM_SEQUENCE_EXTENSION = 0xb5,
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STREAM_GOP = 0xb8,
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STREAM_END = 0xb9,
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STREAM_PACK = 0xba,
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STREAM_SYSTEM = 0xbb,
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STREAM_PROGRAM = 0xbc,
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STREAM_PRIVATE1 = 0xbd,
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STREAM_PADDING = 0xbe,
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STREAM_PRIVATE2 = 0xbf,
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STREAM_AUDIO = 0xc0,
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STREAM_VIDEO = 0xe0
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};
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enum {
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PTS_FLAG = 0x80,
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DTS_FLAG = 0x40,
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ESCR_FLAG = 0x20,
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ES_RATE_FLAG = 0x10,
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DSM_TRICK_MODE_FLAG = 0x08,
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COPY_INFO_FLAG = 0x04,
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CRC_FLAG = 0x02,
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EXTENSION_FLAG = 0x01
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};
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enum {
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PRIVATE_DATA_FLAG = 0x80,
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PACK_LENGTH_FLAG = 0x40,
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SEQUENCE_FLAG = 0x20,
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PSTD_BUFFER_FLAG = 0x10,
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MUST_BE_ONES = 0x07,
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EXTENSION_FLAG2 = 0x01
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};
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enum {
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FAST_FORWARD_CONTROL = 0x00,
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SLOW_MOTION_CONTROL = 0x01,
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FREEZE_FRAME_CONTROL = 0x02,
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FAST_REVERSE_CONTROL = 0x03,
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SLOW_REVERSE_CONTROL = 0x04
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};
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static const value_string mpeg_pes_TrickModeControl_vals[] = {
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{ FAST_FORWARD_CONTROL, "fast-forward" },
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{ SLOW_MOTION_CONTROL, "slow-motion" },
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{ FREEZE_FRAME_CONTROL, "freeze-frame" },
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{ FAST_REVERSE_CONTROL, "fast-reverse" },
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{ SLOW_REVERSE_CONTROL, "slow-reverse" },
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{ 5, "reserved" },
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{ 6, "reserved" },
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{ 7, "reserved" },
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{ 0, NULL }
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};
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static const value_string mpeg_pes_TrickModeFieldId_vals[] = {
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{ 0, "display-from-top-field-only" },
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{ 1, "display-from-bottom-field-only" },
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{ 2, "display-complete-frame" },
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{ 3, "reserved" },
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{ 0, NULL }
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};
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static const value_string mpeg_pes_TrickModeIntraSliceRefresh_vals[] = {
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{ 0, "macroblocks-may-not-be-missing" },
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{ 1, "macroblocks-may-be-missing" },
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{ 0, NULL }
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};
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static const value_string mpeg_pes_TrickModeFrequencyTruncation_vals[] = {
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{ 0, "only-DC-coefficients-are-non-zero" },
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{ 1, "only-the-first-three-coefficients-are-non-zero" },
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{ 2, "only-the-first-six-coefficients-are-non-zero" },
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{ 3, "all-coefficients-may-be-non-zero" },
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{ 0, NULL }
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};
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static guint64 tvb_get_ntoh40(tvbuff_t *tvb, unsigned offset)
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{
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return (guint64)tvb_get_guint8(tvb, offset) << 32
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| tvb_get_ntohl(tvb, offset + 1);
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}
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static guint64 tvb_get_ntoh48(tvbuff_t *tvb, unsigned offset)
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{
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return (guint64)tvb_get_ntohs(tvb, offset) << 32
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| tvb_get_ntohl(tvb, offset + 2);
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}
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#define TSHZ 90000
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static guint64 decode_time_stamp(tvbuff_t *tvb, unsigned offset, nstime_t *nst)
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{
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guint64 bytes = tvb_get_ntoh40(tvb, offset);
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guint64 ts =
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(bytes >> 33 & 0x0007) << 30 |
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(bytes >> 17 & 0x7fff) << 15 |
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(bytes >> 1 & 0x7fff) << 0;
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unsigned rem = (unsigned)(ts % TSHZ);
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nst->secs = (time_t)(ts / TSHZ);
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nst->nsecs = (int)(G_GINT64_CONSTANT(1000000000) * rem / TSHZ);
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return ts;
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}
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#define SCRHZ 27000000
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static guint64 decode_clock_reference(tvbuff_t *tvb, unsigned offset,
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nstime_t *nst)
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{
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guint64 bytes = tvb_get_ntoh48(tvb, offset);
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guint64 ts =
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(bytes >> 43 & 0x0007) << 30 |
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(bytes >> 27 & 0x7fff) << 15 |
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(bytes >> 11 & 0x7fff) << 0;
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unsigned ext = (unsigned)((bytes >> 1) & 0x1ff);
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guint64 cr = 300 * ts + ext;
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unsigned rem = (unsigned)(cr % SCRHZ);
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nst->secs = (time_t)(cr / SCRHZ);
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nst->nsecs = (int)(G_GINT64_CONSTANT(1000000000) * rem / SCRHZ);
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return cr;
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}
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static void
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dissect_mpeg_pes_header_data(tvbuff_t *tvb, packet_info *pinfo,
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proto_tree *root, unsigned flags)
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{
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proto_item *item = proto_tree_add_item(root, hf_mpeg_pes_header_data, tvb,
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0, -1, FALSE);
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proto_tree *tree = proto_item_add_subtree(item, ett_mpeg_pes_header_data);
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unsigned offset = 0;
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if (flags & PTS_FLAG) {
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nstime_t nst;
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decode_time_stamp(tvb, offset, &nst);
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proto_tree_add_time(tree, hf_mpeg_pes_pts, tvb,
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offset, 5, &nst);
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offset += 5;
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if (check_col(pinfo->cinfo, COL_DEF_DST)) {
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SET_ADDRESS(&pinfo->dst, AT_NONE, 0, NULL);
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col_add_fstr(pinfo->cinfo, COL_DEF_DST,
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"PTS %ld.%09u",
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(long) nst.secs, nst.nsecs);
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}
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}
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if (flags & DTS_FLAG) {
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nstime_t nst;
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decode_time_stamp(tvb, offset, &nst);
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proto_tree_add_time(tree, hf_mpeg_pes_dts, tvb,
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offset, 5, &nst);
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offset += 5;
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if (check_col(pinfo->cinfo, COL_DEF_SRC)) {
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SET_ADDRESS(&pinfo->src, AT_NONE, 0, NULL);
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col_add_fstr(pinfo->cinfo, COL_DEF_SRC,
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"DTS %ld.%09u",
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(long) nst.secs, nst.nsecs);
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}
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}
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if (flags & ESCR_FLAG) {
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nstime_t nst;
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decode_clock_reference(tvb, offset, &nst);
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proto_tree_add_time(tree, hf_mpeg_pes_escr, tvb,
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offset, 6, &nst);
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offset += 6;
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}
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if (flags & ES_RATE_FLAG) {
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unsigned es_rate = (tvb_get_ntohs(tvb, offset) >> 1 & 0x3fff) * 50;
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proto_tree_add_uint(tree, hf_mpeg_pes_es_rate, tvb,
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offset, 3, es_rate);
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offset += 3;
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}
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if (flags & DSM_TRICK_MODE_FLAG)
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{
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guint8 value = tvb_get_guint8(tvb, offset);
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guint8 control;
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proto_tree *trick_tree;
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proto_item *trick_item;
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trick_item = proto_tree_add_item(item,
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hf_mpeg_pes_dsm_trick_mode, tvb,
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offset, 1, FALSE);
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trick_tree = proto_item_add_subtree(trick_item,
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ett_mpeg_pes_trick_mode);
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control = (value >> 5);
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proto_tree_add_uint(trick_tree,
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hf_mpeg_pes_dsm_trick_mode_control, tvb,
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offset, 1,
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control);
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if (control == FAST_FORWARD_CONTROL
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|| control == FAST_REVERSE_CONTROL)
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{
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proto_tree_add_uint(trick_tree,
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hf_mpeg_pes_dsm_trick_mode_field_id, tvb,
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offset, 1,
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(value & 0x18) >> 3);
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proto_tree_add_uint(trick_tree,
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hf_mpeg_pes_dsm_trick_mode_intra_slice_refresh, tvb,
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offset, 1,
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(value & 0x04) >> 2);
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proto_tree_add_uint(trick_tree,
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hf_mpeg_pes_dsm_trick_mode_frequency_truncation, tvb,
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offset, 1,
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(value & 0x03));
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}
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else if (control == SLOW_MOTION_CONTROL
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|| control == SLOW_REVERSE_CONTROL)
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{
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proto_tree_add_uint(trick_tree,
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hf_mpeg_pes_dsm_trick_mode_rep_cntrl, tvb,
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offset, 1,
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(value & 0x1F));
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}
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else if (control == FREEZE_FRAME_CONTROL)
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{
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proto_tree_add_uint(trick_tree,
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hf_mpeg_pes_dsm_trick_mode_field_id, tvb,
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offset, 1,
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(value & 0x18) >> 3);
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}
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offset += 1;
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}
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if (flags & COPY_INFO_FLAG) {
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proto_tree_add_item(tree, hf_mpeg_pes_copy_info, tvb,
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offset, 1, FALSE);
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offset++;
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}
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if (flags & CRC_FLAG) {
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proto_tree_add_item(tree, hf_mpeg_pes_crc, tvb,
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offset, 2, FALSE);
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offset += 2;
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}
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if (flags & EXTENSION_FLAG) {
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int flags2 = tvb_get_guint8(tvb, offset);
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proto_tree_add_item(tree, hf_mpeg_pes_extension_flags, tvb,
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offset, 1, FALSE);
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offset++;
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if (flags2 & PRIVATE_DATA_FLAG) {
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proto_tree_add_item(tree, hf_mpeg_pes_private_data, tvb,
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offset, 2, FALSE);
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offset += 2;
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}
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if (flags2 & PACK_LENGTH_FLAG) {
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proto_tree_add_item(tree, hf_mpeg_pes_pack_length, tvb,
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offset, 1, FALSE);
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offset++;
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}
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if (flags2 & SEQUENCE_FLAG) {
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proto_tree_add_item(tree, hf_mpeg_pes_sequence, tvb,
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offset, 2, FALSE);
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offset += 2;
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}
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if (flags2 & PSTD_BUFFER_FLAG) {
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unsigned pstd = tvb_get_ntohs(tvb, offset);
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proto_tree_add_uint(tree, hf_mpeg_pes_pstd_buffer, tvb,
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offset, 2, (pstd & 0x2000 ? 1024 : 128) * (pstd & 0x1ff));
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offset += 2;
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}
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if (flags2 & EXTENSION_FLAG2) {
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proto_tree_add_item(tree, hf_mpeg_pes_extension2, tvb,
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offset, 2, FALSE);
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offset += 2;
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}
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}
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}
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static unsigned
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dissect_mpeg_pes_pack_header(tvbuff_t *tvb, unsigned offset,
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packet_info *pinfo, proto_tree *root)
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{
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unsigned program_mux_rate, stuffing_length;
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proto_item *item = proto_tree_add_item(root, hf_mpeg_pes_pack_header, tvb,
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offset / 8, 10, FALSE);
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proto_tree *tree = proto_item_add_subtree(item, ett_mpeg_pes_pack_header);
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nstime_t nst;
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decode_clock_reference(tvb, offset / 8, &nst);
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proto_tree_add_time(tree, hf_mpeg_pes_scr, tvb, offset / 8, 6, &nst);
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offset += 6 * 8;
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program_mux_rate = (tvb_get_ntoh24(tvb, offset / 8) >> 2) * 50;
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proto_tree_add_uint(tree, hf_mpeg_pes_program_mux_rate, tvb, offset / 8, 3,
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program_mux_rate);
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offset += 3 * 8;
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if (check_col(pinfo->cinfo, COL_DEF_SRC)) {
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SET_ADDRESS(&pinfo->src, AT_NONE, 0, NULL);
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col_add_fstr(pinfo->cinfo, COL_DEF_SRC, "%u B/s", program_mux_rate);
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}
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stuffing_length = tvb_get_guint8(tvb, offset / 8) & 0x07;
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proto_tree_add_item(tree, hf_mpeg_pes_stuffing_length, tvb,
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offset / 8, 1, FALSE);
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offset += 1 * 8;
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if (stuffing_length > 0) {
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proto_tree_add_item(tree, hf_mpeg_pes_stuffing, tvb,
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offset / 8, stuffing_length, FALSE);
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offset += stuffing_length * 8;
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}
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return offset;
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}
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static void
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dissect_mpeg(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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static gboolean
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dissect_mpeg_pes(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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int prefix;
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int stream;
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asn1_ctx_t asn1_ctx;
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unsigned offset = 0;
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if (!tvb_bytes_exist(tvb, 0, 3))
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return FALSE; /* not enough bytes for a PES prefix */
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prefix = tvb_get_ntoh24(tvb, 0);
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if (prefix != PES_PREFIX)
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return FALSE;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "MPEG PES");
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col_clear(pinfo->cinfo, COL_INFO);
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stream = tvb_get_guint8(tvb, 3);
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if (check_col(pinfo->cinfo, COL_INFO)) {
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const char *s = match_strval(stream, mpeg_pes_T_stream_vals);
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if (s != NULL)
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col_set_str(pinfo->cinfo, COL_INFO, s);
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}
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#if 0
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if (tree == NULL)
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return TRUE;
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#endif
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asn1_ctx_init(&asn1_ctx, ASN1_ENC_PER, TRUE, pinfo);
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offset = dissect_mpeg_pes_PES(tvb, offset, &asn1_ctx,
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tree, proto_mpeg_pes);
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if (stream == STREAM_PICTURE) {
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int frame_type;
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frame_type = tvb_get_guint8(tvb, 5) >> 3 & 0x07;
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if (check_col(pinfo->cinfo, COL_INFO)) {
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const char *s = match_strval(frame_type,
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mpeg_pes_T_frame_type_vals);
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if (s != NULL)
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col_set_str(pinfo->cinfo, COL_INFO, s);
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}
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offset = dissect_mpeg_pes_Picture(tvb, offset, &asn1_ctx,
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tree, hf_mpeg_video_picture);
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proto_tree_add_item(tree, hf_mpeg_video_data, tvb,
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offset / 8, -1, FALSE);
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} else if (stream == STREAM_SEQUENCE) {
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tvbuff_t *es;
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|
|
|
offset = dissect_mpeg_pes_Sequence_header(tvb, offset, &asn1_ctx,
|
|
tree, hf_mpeg_video_sequence_header);
|
|
|
|
proto_tree_add_item(tree, hf_mpeg_video_quantization_matrix, tvb,
|
|
offset / 8, 64, FALSE);
|
|
offset += 64 * 8;
|
|
|
|
es = tvb_new_subset_remaining(tvb, offset / 8);
|
|
dissect_mpeg_pes(es, pinfo, tree);
|
|
} else if (stream == STREAM_SEQUENCE_EXTENSION) {
|
|
tvbuff_t *es;
|
|
|
|
offset = dissect_mpeg_pes_Sequence_extension(tvb, offset, &asn1_ctx,
|
|
tree, hf_mpeg_video_sequence_extension);
|
|
|
|
es = tvb_new_subset_remaining(tvb, offset / 8);
|
|
dissect_mpeg_pes(es, pinfo, tree);
|
|
} else if (stream == STREAM_GOP) {
|
|
tvbuff_t *es;
|
|
|
|
offset = dissect_mpeg_pes_Group_of_pictures(tvb, offset, &asn1_ctx,
|
|
tree, hf_mpeg_video_group_of_pictures);
|
|
|
|
es = tvb_new_subset_remaining(tvb, offset / 8);
|
|
dissect_mpeg_pes(es, pinfo, tree);
|
|
} else if (stream == STREAM_PACK) {
|
|
if (tvb_get_guint8(tvb, offset / 8) >> 6 == 1) {
|
|
offset = dissect_mpeg_pes_pack_header(tvb, offset, pinfo, tree);
|
|
} else {
|
|
proto_tree_add_item(tree, hf_mpeg_pes_data, tvb,
|
|
offset / 8, 8, FALSE);
|
|
offset += 8 * 8;
|
|
}
|
|
} else if (stream == STREAM_SYSTEM || stream == STREAM_PRIVATE2) {
|
|
unsigned data_length = tvb_get_ntohs(tvb, offset / 8);
|
|
proto_tree_add_item(tree, hf_mpeg_pes_length, tvb,
|
|
offset / 8, 2, FALSE);
|
|
offset += 2 * 8;
|
|
|
|
proto_tree_add_item(tree, hf_mpeg_pes_data, tvb,
|
|
offset / 8, data_length, FALSE);
|
|
} else if (stream == STREAM_PADDING) {
|
|
unsigned padding_length = tvb_get_ntohs(tvb, offset / 8);
|
|
proto_tree_add_item(tree, hf_mpeg_pes_length, tvb,
|
|
offset / 8, 2, FALSE);
|
|
offset += 2 * 8;
|
|
|
|
proto_tree_add_item(tree, hf_mpeg_pes_padding, tvb,
|
|
offset / 8, padding_length, FALSE);
|
|
} else if (stream == STREAM_PRIVATE1
|
|
|| stream >= STREAM_AUDIO) {
|
|
int length = tvb_get_ntohs(tvb, 4);
|
|
|
|
if ((tvb_get_guint8(tvb, 6) & 0xc0) == 0x80) {
|
|
int header_length;
|
|
tvbuff_t *es;
|
|
|
|
offset = dissect_mpeg_pes_Stream(tvb, offset, &asn1_ctx,
|
|
tree, hf_mpeg_pes_extension);
|
|
/* https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2229
|
|
* A value of 0 indicates that the PES packet length is neither specified nor
|
|
* bounded and is allowed only in PES packets whose payload is a video elementary
|
|
* stream contained in Transport Stream packets.
|
|
* XXX Some one with access to the spec should check this
|
|
*/
|
|
if(length !=0 && stream != STREAM_VIDEO){
|
|
length -= 5 * 8;
|
|
}
|
|
|
|
header_length = tvb_get_guint8(tvb, 8);
|
|
if (header_length > 0) {
|
|
int flags = tvb_get_guint8(tvb, 7);
|
|
tvbuff_t *header_data = tvb_new_subset(tvb, offset / 8,
|
|
header_length, header_length);
|
|
dissect_mpeg_pes_header_data(header_data, pinfo, tree, flags);
|
|
offset += header_length * 8;
|
|
/* length may be zero for Video stream */
|
|
if(length !=0 && stream != STREAM_VIDEO){
|
|
length -= header_length * 8;
|
|
}
|
|
}
|
|
|
|
/* length may be zero for Video stream */
|
|
if(length==0){
|
|
proto_tree_add_item(tree, hf_mpeg_pes_data, tvb, (offset>>3),-1, FALSE);
|
|
return TRUE;
|
|
}
|
|
|
|
es = tvb_new_subset(tvb, offset / 8, -1, length / 8);
|
|
if (tvb_get_ntoh24(es, 0) == PES_PREFIX)
|
|
dissect_mpeg_pes(es, pinfo, tree);
|
|
else if (tvb_get_guint8(es, 0) == 0xff)
|
|
dissect_mpeg(es, pinfo, tree);
|
|
else
|
|
proto_tree_add_item(tree, hf_mpeg_pes_data, es,
|
|
0, -1, FALSE);
|
|
} else {
|
|
unsigned data_length = tvb_get_ntohs(tvb, offset / 8);
|
|
proto_tree_add_item(tree, hf_mpeg_pes_length, tvb,
|
|
offset / 8, 2, FALSE);
|
|
offset += 2 * 8;
|
|
|
|
proto_tree_add_item(tree, hf_mpeg_pes_data, tvb,
|
|
offset / 8, data_length, FALSE);
|
|
}
|
|
} else {
|
|
proto_tree_add_item(tree, hf_mpeg_pes_data, tvb,
|
|
offset / 8, -1, FALSE);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static heur_dissector_list_t heur_subdissector_list;
|
|
|
|
static void
|
|
dissect_mpeg(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
if (!dissector_try_heuristic(heur_subdissector_list, tvb, pinfo, tree)) {
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "MPEG");
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
if (tree)
|
|
proto_tree_add_item(tree, proto_mpeg, tvb, 0, -1, FALSE);
|
|
}
|
|
}
|
|
|
|
void
|
|
proto_register_mpeg_pes(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
#include "packet-mpeg-pes-hfarr.c"
|
|
{ &hf_mpeg_pes_pack_header,
|
|
{ "Pack header", "mpeg-pes.pack",
|
|
FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_scr,
|
|
{ "system clock reference (SCR)", "mpeg-pes.scr",
|
|
FT_RELATIVE_TIME, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_program_mux_rate,
|
|
{ "PES program mux rate", "mpeg-pes.program-mux-rate",
|
|
FT_UINT24, BASE_DEC, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_stuffing_length,
|
|
{ "PES stuffing length", "mpeg-pes.stuffing-length",
|
|
FT_UINT8, BASE_DEC, NULL, 0x07, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_stuffing,
|
|
{ "PES stuffing bytes", "mpeg-pes.stuffing",
|
|
FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_extension,
|
|
{ "PES extension", "mpeg-pes.extension",
|
|
FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_header_data,
|
|
{ "PES header data", "mpeg-pes.header-data",
|
|
FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_pts,
|
|
{ "presentation time stamp (PTS)", "mpeg-pes.pts",
|
|
FT_RELATIVE_TIME, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_dts,
|
|
{ "decode time stamp (DTS)", "mpeg-pes.dts",
|
|
FT_RELATIVE_TIME, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_escr,
|
|
{ "elementary stream clock reference (ESCR)", "mpeg-pes.escr",
|
|
FT_RELATIVE_TIME, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_es_rate,
|
|
{ "elementary stream rate", "mpeg-pes.es-rate",
|
|
FT_UINT24, BASE_DEC, NULL, 0x7ffe, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_dsm_trick_mode,
|
|
{ "Trick mode", "mpeg-pes.trick-mode",
|
|
FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_dsm_trick_mode_control,
|
|
{ "control", "mpeg-pes.trick-mode-control",
|
|
FT_UINT8, BASE_HEX, VALS(mpeg_pes_TrickModeControl_vals), 0,
|
|
"mpeg_pes trick mode control", HFILL }},
|
|
{ &hf_mpeg_pes_dsm_trick_mode_field_id,
|
|
{ "field id", "mpeg-pes.trick-mode-field-id",
|
|
FT_UINT8, BASE_HEX, VALS(mpeg_pes_TrickModeFieldId_vals), 0,
|
|
"mpeg_pes trick mode field id", HFILL }},
|
|
{ &hf_mpeg_pes_dsm_trick_mode_intra_slice_refresh,
|
|
{ "intra slice refresh", "mpeg-pes.trick-mode-intra-slice-refresh",
|
|
FT_UINT8, BASE_HEX, VALS(mpeg_pes_TrickModeIntraSliceRefresh_vals), 0,
|
|
"mpeg_pes trick mode intra slice refresh", HFILL }},
|
|
{ &hf_mpeg_pes_dsm_trick_mode_frequency_truncation,
|
|
{ "frequency truncation", "mpeg-pes.trick-mode-frequeny-truncation",
|
|
FT_UINT8, BASE_HEX, VALS(mpeg_pes_TrickModeFrequencyTruncation_vals), 0,
|
|
"mpeg_pes trick mode frequency truncation", HFILL }},
|
|
{ &hf_mpeg_pes_dsm_trick_mode_rep_cntrl,
|
|
{ "rep cntrl", "mpeg-pes.trick-mode-rep-cntrl",
|
|
FT_UINT8, BASE_HEX, NULL, 0, "mpeg_pes trick mode rep cntrl", HFILL }},
|
|
{ &hf_mpeg_pes_copy_info,
|
|
{ "copy info", "mpeg-pes.copy-info",
|
|
FT_UINT8, BASE_DEC, NULL, 0x7f, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_crc,
|
|
{ "CRC", "mpeg-pes.crc",
|
|
FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_extension_flags,
|
|
{ "extension flags", "mpeg-pes.extension-flags",
|
|
FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_private_data,
|
|
{ "private data", "mpeg-pes.private-data",
|
|
FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_pack_length,
|
|
{ "pack length", "mpeg-pes.pack-length",
|
|
FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_sequence,
|
|
{ "sequence", "mpeg-pes.sequence",
|
|
FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_pstd_buffer,
|
|
{ "P-STD buffer size", "mpeg-pes.pstd-buffer",
|
|
FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_extension2,
|
|
{ "extension2", "mpeg-pes.extension2",
|
|
FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_padding,
|
|
{ "PES padding", "mpeg-pes.padding",
|
|
FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_pes_data,
|
|
{ "PES data", "mpeg-pes.data",
|
|
FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_video_sequence_header,
|
|
{ "MPEG sequence header", "mpeg-video.sequence",
|
|
FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_video_sequence_extension,
|
|
{ "MPEG sequence extension", "mpeg-video.sequence-ext",
|
|
FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_video_group_of_pictures,
|
|
{ "MPEG group of pictures", "mpeg-video.gop",
|
|
FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_video_picture,
|
|
{ "MPEG picture", "mpeg-video.picture",
|
|
FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_video_quantization_matrix,
|
|
{ "MPEG quantization matrix", "mpeg-video.quant",
|
|
FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
{ &hf_mpeg_video_data,
|
|
{ "MPEG picture data", "mpeg-video.data",
|
|
FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }},
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
#include "packet-mpeg-pes-ettarr.c"
|
|
&ett_mpeg_pes_pack_header,
|
|
&ett_mpeg_pes_header_data,
|
|
&ett_mpeg_pes_trick_mode
|
|
};
|
|
|
|
proto_mpeg = proto_register_protocol(
|
|
"Moving Picture Experts Group", "MPEG", "mpeg");
|
|
register_dissector("mpeg", dissect_mpeg, proto_mpeg);
|
|
register_heur_dissector_list("mpeg", &heur_subdissector_list);
|
|
|
|
proto_mpeg_pes = proto_register_protocol(
|
|
"Packetized Elementary Stream", "MPEG PES", "mpeg-pes");
|
|
proto_register_field_array(proto_mpeg_pes, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
new_register_dissector("mpeg-pes", dissect_mpeg_pes, proto_mpeg_pes);
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_mpeg_pes(void)
|
|
{
|
|
dissector_handle_t mpeg_handle = find_dissector("mpeg");
|
|
|
|
dissector_add_uint("wtap_encap", WTAP_ENCAP_MPEG, mpeg_handle);
|
|
heur_dissector_add("mpeg", dissect_mpeg_pes, proto_mpeg_pes);
|
|
}
|