hi all,
is there anyone able to explain the changes of patch 661 inside
libq931/callref.c ?
OLD VERSION:
void q931_make_callref(
void *void_buf,
int size,
q931_callref callref,
enum q931_callref_flag direction)
{
assert(void_buf);
assert(direction == Q931_CALLREF_FLAG_FROM_ORIGINATING_SIDE ||
direction == Q931_CALLREF_FLAG_TO_ORIGINATING_SIDE);
int i;
__u8 *buf = void_buf;
for (i=0; i<size; i++) {
buf[i] = callref & (0xFF << ((size-i-1) * 8));
if (i == 0 &&
direction == Q931_CALLREF_FLAG_TO_ORIGINATING_SIDE)
buf[i] |= 0x80;
}
}
ACTUAL VERSION(patch 661):
void q931_make_callref(
void *buf,
int len,
q931_callref callref,
enum q931_callref_flag direction)
{
assert(buf);
assert(direction == Q931_CALLREF_FLAG_FROM_ORIGINATING_SIDE ||
direction == Q931_CALLREF_FLAG_TO_ORIGINATING_SIDE);
assert(len <= sizeof(q931_callref));
union { q931_callref cr; __u8 raw[sizeof(q931_callref)]; } cu;
cu.cr = callref;
int i;
for (i=0; i<len; i++) {
#if __BYTE_ORDER == __LITTLE_ENDIAN
((__u8 *)buf)[i] = cu.raw[len - 1 - i];
#else
((__u8 *)buf)[i] = cu.raw[i];
#endif
}
if (direction == Q931_CALLREF_FLAG_TO_ORIGINATING_SIDE)
*((__u8 *)buf) |= 0x80;
}
...as this patch breaks at least audio from asterisk to nt-mode phone on ppc
thx
Dirk
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