/*****************************************************************************
description: encodes SBR Header information
returns: number of bits written
*****************************************************************************/
static int
encodeSbrHeader (HANDLE_SBR_HEADER_DATA sbrHeaderData,
HANDLE_SBR_BITSTREAM_DATA sbrBitstreamData,
HANDLE_COMMON_DATA cmonData,
SBR_ELEMENT_TYPE sbrElem)
{
int payloadBits = 0;
/* counting previous operation */
if (sbrBitstreamData->CRCActive) {
cmonData->sbrCrcLen = 1;
}
else {
cmonData->sbrCrcLen = 0;
}
if (sbrBitstreamData->HeaderActive) {
payloadBits += WriteBits (&cmonData->sbrBitbuf, 1, 1);
payloadBits += encodeSbrHeaderData (sbrHeaderData,
&cmonData->sbrBitbuf,
sbrElem);
}
else {
payloadBits += WriteBits (&cmonData->sbrBitbuf, 0, 1);
}
cmonData->sbrHdrBits = payloadBits;
return payloadBits;
}
void sbrEncoder_GetHeader(SBR_ENCODER *sbrEncoder, HANDLE_FDK_BITSTREAM hBs,
INT element_index, int fSendHeaders) {
encodeSbrHeaderData(&sbrEncoder->sbrElement[element_index]->sbrHeaderData,
hBs);
if (fSendHeaders == 0) {
/* Prevent header being embedded into the SBR payload. */
sbrEncoder->sbrElement[element_index]->sbrBitstreamData.NrSendHeaderData =
-1;
sbrEncoder->sbrElement[element_index]->sbrBitstreamData.HeaderActive = 0;
sbrEncoder->sbrElement[element_index]
->sbrBitstreamData.CountSendHeaderData = -1;
}
}
/*****************************************************************************
functionname: encodeSbrHeader
description: encodes SBR Header information
returns: number of bits written
input:
output:
*****************************************************************************/
static INT encodeSbrHeader(HANDLE_SBR_HEADER_DATA sbrHeaderData,
HANDLE_SBR_BITSTREAM_DATA sbrBitstreamData,
HANDLE_COMMON_DATA cmonData) {
INT payloadBits = 0;
if (sbrBitstreamData->HeaderActive) {
payloadBits += FDKwriteBits(&cmonData->sbrBitbuf, 1, 1);
payloadBits += encodeSbrHeaderData(sbrHeaderData, &cmonData->sbrBitbuf);
} else {
payloadBits += FDKwriteBits(&cmonData->sbrBitbuf, 0, 1);
}
cmonData->sbrHdrBits = payloadBits;
return payloadBits;
}
