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Dissect a bit of the payload to, Picture start block and temporal ref. 

svn path=/trunk/; revision=13776
This commit is contained in:
Anders Broman 2005-03-16 20:06:01 +00:00
parent 7846581664
commit 71e75d9183
1 changed files with 50 additions and 7 deletions
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57
epan/dissectors/packet-h263.c
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@ -73,6 +73,9 @@ static int hf_h263_hmv1 = -1;
static int hf_h263_vmv1 = -1;
static int hf_h263_hmv2 = -1;
static int hf_h263_vmv2 = -1;
/* Fields for the data section */
static int hf_h263_psc = -1;
static int hf_h263_TR =-1;
static int hf_h263_data = -1;
@ -96,15 +99,18 @@ static const value_string srcformat_vals[] =
};
/* H.263 fields defining a sub tree */
static gint ett_h263 = -1;
static gint ett_h263 = -1;
static gint ett_h263_payload = -1;
static void
dissect_h263( tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree )
{
proto_item *ti = NULL;
proto_tree *h263_tree = NULL;
unsigned int offset = 0;
unsigned int h263_version = 0;
proto_item *ti = NULL;
proto_item *h263_payload_item = NULL;
proto_tree *h263_tree = NULL;
proto_tree *h263_payload_tree = NULL;
unsigned int offset = 0;
unsigned int h263_version = 0;
guint32 data;
h263_version = (tvb_get_guint8( tvb, offset ) & 0xc0 ) >> 6;
@ -242,7 +248,19 @@ dissect_h263( tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree )
} /* end not mode a */
/* The rest of the packet is the H.263 stream */
proto_tree_add_item( h263_tree, hf_h263_data, tvb, offset, -1, FALSE );
h263_payload_item = proto_tree_add_text(h263_tree,tvb,offset,-1,"H263 Payload");
h263_payload_tree = proto_item_add_subtree( h263_payload_item, ett_h263_payload );
/* Check for PSC, PSC is a word of 22 bits. Its value is 0000 0000 0000 0000' 1000 00xx xxxx xxxx. */
data = tvb_get_ntohl(tvb, offset);
if (( data & 0xfffffc00) == 0x00008000 ) { /* PSC found */
proto_tree_add_uint(h263_payload_tree, hf_h263_psc,tvb, offset,3,data);
offset = offset + 2;
proto_tree_add_uint(h263_payload_tree, hf_h263_TR,tvb, offset,2,data);
}
proto_tree_add_item( h263_payload_tree, hf_h263_data, tvb, offset, -1, FALSE );
}
}
@ -515,11 +533,36 @@ proto_register_h263(void)
"The H.263 stream including its Picture, GOB or Macro block start code.", HFILL
}
},
{
&hf_h263_psc,
{
"H.263 Picture start Code",
"h263.psc",
FT_UINT32,
BASE_HEX,
NULL,
0xfffffc00,
"Picture start Code, PSC", HFILL
}
},
{
&hf_h263_TR,
{
"H.263 Temporal Reference",
"h263.tr2",
FT_UINT32,
BASE_HEX,
NULL,
0x000003fc,
"Temporal Reference, TR", HFILL
}
},
};
static gint *ett[] =
{
&ett_h263,
&ett_h263_payload,
};