MpBufPtr MpBuf_allowMods(MpBufPtr b)
{
MpBufPtr t;
if (NULL == b) {
return NULL;
}
if (MpBuf_invalid(b, FALSE, TRUE)) {
Zprintf("MpBuf_allowMod(0x%X): invalid!\n", (int) b, 0,0,0,0,0);
return NULL;
}
if (1 == b->refCnt) {
return b;
}
t = MpBuf_getBuf(b->pPool, MpBuf_getNumSamples(b),
MpBuf_getOffset(b), MpBuf_getFormat(b));
if (NULL == t) {
return NULL;
}
memcpy((void*) MpBuf_getSamples(t),
(void*) MpBuf_getSamples(b),
MpBuf_getByteLen(t));
MpBuf_setOsTC(t, MpBuf_getOsTC(b));
MpBuf_setContentLen(t, MpBuf_getContentLen(b));
MpBuf_delRef(b);
return t;
} /* MpBuf_allowMods */
static MpBufPtr conceal(MpBufPtr prev, int concealed)
{
#ifdef XXX_DEBUG_WINDOZE /* [ */
MpBufPtr ret;
Sample* src;
Sample* dst;
int len;
int halfLen;
int i;
if (NULL == prev) {
ret = MpBuf_getFgSilence();
return ret;
}
len = MpBuf_getNumSamples(prev);
ret = MpBuf_getBuf(MpBuf_getPool(prev), len, 0, MpBuf_getFormat(prev));
src = MpBuf_getSamples(prev);
dst = MpBuf_getSamples(ret);
halfLen = (len + 1) >> 1;
for (i=0; i<halfLen; i++) {
dst[i] = src[len - i];
}
for (i=halfLen; i<len; i++) {
dst[i] = src[i];
}
if (concealed > 2) {
for (i=0; i<len; i++) {
dst[i] = dst[i] >> 1; // attenuate
}
}
return ret;
#else /* DEBUG_WINDOZE ] [ */
return MpBuf_getFgSilence();
#endif /* DEBUG_WINDOZE ] */
}