/*****************************************************************************
description: encodes sbr SCE information
returns: number of bits written
*****************************************************************************/
static int
encodeSbrSingleChannelElement (HANDLE_SBR_ENV_DATA sbrEnvData,
HANDLE_BIT_BUF hBitStream,
int data_extra)
{
int payloadBits = 0;
/* counting previous operation */
payloadBits += WriteBits (hBitStream, 0, 1); /* no reserved bits */
payloadBits += encodeSbrGrid (sbrEnvData, hBitStream);
payloadBits += encodeSbrDtdf (sbrEnvData, hBitStream);
{
int i;
/* sbrEnvData->sbr_invf_mode_vec[] */
for (i = 0; i < sbrEnvData->noOfnoisebands; i++) {
payloadBits += WriteBits (hBitStream, sbrEnvData->sbr_invf_mode_vec[i], SI_SBR_INVF_MODE_BITS);
}
}
payloadBits += writeEnvelopeData (sbrEnvData, hBitStream, 0);
payloadBits += writeNoiseLevelData (sbrEnvData, hBitStream, 0);
payloadBits += writeSyntheticCodingData (sbrEnvData,hBitStream);
return payloadBits;
}
/*****************************************************************************
functionname: encodeSbrSingleChannelElement
description: encodes sbr SCE information
returns: number of bits written
input:
output:
*****************************************************************************/
static INT encodeSbrSingleChannelElement(
HANDLE_SBR_ENV_DATA sbrEnvData, HANDLE_FDK_BITSTREAM hBitStream,
HANDLE_PARAMETRIC_STEREO hParametricStereo, const UINT sbrSyntaxFlags) {
INT i, payloadBits = 0;
payloadBits += FDKwriteBits(hBitStream, 0,
SI_SBR_DATA_EXTRA_BITS); /* no reserved bits */
if (sbrEnvData->ldGrid) {
if (sbrEnvData->hSbrBSGrid->frameClass != FIXFIXonly) {
/* encode normal SbrGrid */
payloadBits += encodeSbrGrid(sbrEnvData, hBitStream);
} else {
/* use FIXFIXonly frame Grid */
payloadBits += encodeLowDelaySbrGrid(
sbrEnvData, hBitStream, encodeFreqs(LD_TRANSMISSION), sbrSyntaxFlags);
}
} else {
if (sbrSyntaxFlags & SBR_SYNTAX_SCALABLE) {
payloadBits += FDKwriteBits(hBitStream, 1, SI_SBR_COUPLING_BITS);
}
payloadBits += encodeSbrGrid(sbrEnvData, hBitStream);
}
payloadBits += encodeSbrDtdf(sbrEnvData, hBitStream);
for (i = 0; i < sbrEnvData->noOfnoisebands; i++) {
payloadBits += FDKwriteBits(hBitStream, sbrEnvData->sbr_invf_mode_vec[i],
SI_SBR_INVF_MODE_BITS);
}
payloadBits += writeEnvelopeData(sbrEnvData, hBitStream, 0);
payloadBits += writeNoiseLevelData(sbrEnvData, hBitStream, 0);
payloadBits += writeSyntheticCodingData(sbrEnvData, hBitStream);
payloadBits += encodeExtendedData(hParametricStereo, hBitStream);
return payloadBits;
}
/*****************************************************************************
functionname: encodeSbrChannelPairElement
description: encodes sbr CPE information
returns:
input:
output:
*****************************************************************************/
static INT encodeSbrChannelPairElement(
HANDLE_SBR_ENV_DATA sbrEnvDataLeft, HANDLE_SBR_ENV_DATA sbrEnvDataRight,
HANDLE_PARAMETRIC_STEREO hParametricStereo, HANDLE_FDK_BITSTREAM hBitStream,
const INT coupling, const UINT sbrSyntaxFlags) {
INT payloadBits = 0;
INT i = 0;
payloadBits += FDKwriteBits(hBitStream, 0,
SI_SBR_DATA_EXTRA_BITS); /* no reserved bits */
payloadBits += FDKwriteBits(hBitStream, coupling, SI_SBR_COUPLING_BITS);
if (coupling) {
if (sbrEnvDataLeft->ldGrid) {
if (sbrEnvDataLeft->hSbrBSGrid->frameClass != FIXFIXonly) {
/* normal SbrGrid */
payloadBits += encodeSbrGrid(sbrEnvDataLeft, hBitStream);
} else {
/* FIXFIXonly frame Grid */
payloadBits +=
encodeLowDelaySbrGrid(sbrEnvDataLeft, hBitStream,
encodeFreqs(LD_TRANSMISSION), sbrSyntaxFlags);
}
} else
payloadBits += encodeSbrGrid(sbrEnvDataLeft, hBitStream);
payloadBits += encodeSbrDtdf(sbrEnvDataLeft, hBitStream);
payloadBits += encodeSbrDtdf(sbrEnvDataRight, hBitStream);
for (i = 0; i < sbrEnvDataLeft->noOfnoisebands; i++) {
payloadBits +=
FDKwriteBits(hBitStream, sbrEnvDataLeft->sbr_invf_mode_vec[i],
SI_SBR_INVF_MODE_BITS);
}
payloadBits += writeEnvelopeData(sbrEnvDataLeft, hBitStream, 1);
payloadBits += writeNoiseLevelData(sbrEnvDataLeft, hBitStream, 1);
payloadBits += writeEnvelopeData(sbrEnvDataRight, hBitStream, 1);
payloadBits += writeNoiseLevelData(sbrEnvDataRight, hBitStream, 1);
payloadBits += writeSyntheticCodingData(sbrEnvDataLeft, hBitStream);
payloadBits += writeSyntheticCodingData(sbrEnvDataRight, hBitStream);
} else { /* no coupling */
FDK_ASSERT(sbrEnvDataLeft->ldGrid == sbrEnvDataRight->ldGrid);
if (sbrEnvDataLeft->ldGrid || sbrEnvDataRight->ldGrid) {
/* sbrEnvDataLeft (left channel) */
if (sbrEnvDataLeft->hSbrBSGrid->frameClass != FIXFIXonly) {
/* no FIXFIXonly Frame so we dont need encodeLowDelaySbrGrid */
/* normal SbrGrid */
payloadBits += encodeSbrGrid(sbrEnvDataLeft, hBitStream);
} else {
/* FIXFIXonly frame Grid */
payloadBits +=
encodeLowDelaySbrGrid(sbrEnvDataLeft, hBitStream,
encodeFreqs(LD_TRANSMISSION), sbrSyntaxFlags);
}
/* sbrEnvDataRight (right channel) */
if (sbrEnvDataRight->hSbrBSGrid->frameClass != FIXFIXonly) {
/* no FIXFIXonly Frame so we dont need encodeLowDelaySbrGrid */
/* normal SbrGrid */
payloadBits += encodeSbrGrid(sbrEnvDataRight, hBitStream);
} else {
/* FIXFIXonly frame Grid */
payloadBits +=
encodeLowDelaySbrGrid(sbrEnvDataRight, hBitStream,
encodeFreqs(LD_TRANSMISSION), sbrSyntaxFlags);
}
} else {
payloadBits += encodeSbrGrid(sbrEnvDataLeft, hBitStream);
payloadBits += encodeSbrGrid(sbrEnvDataRight, hBitStream);
}
payloadBits += encodeSbrDtdf(sbrEnvDataLeft, hBitStream);
payloadBits += encodeSbrDtdf(sbrEnvDataRight, hBitStream);
for (i = 0; i < sbrEnvDataLeft->noOfnoisebands; i++) {
payloadBits +=
FDKwriteBits(hBitStream, sbrEnvDataLeft->sbr_invf_mode_vec[i],
SI_SBR_INVF_MODE_BITS);
}
for (i = 0; i < sbrEnvDataRight->noOfnoisebands; i++) {
payloadBits +=
FDKwriteBits(hBitStream, sbrEnvDataRight->sbr_invf_mode_vec[i],
SI_SBR_INVF_MODE_BITS);
}
payloadBits += writeEnvelopeData(sbrEnvDataLeft, hBitStream, 0);
payloadBits += writeEnvelopeData(sbrEnvDataRight, hBitStream, 0);
payloadBits += writeNoiseLevelData(sbrEnvDataLeft, hBitStream, 0);
payloadBits += writeNoiseLevelData(sbrEnvDataRight, hBitStream, 0);
payloadBits += writeSyntheticCodingData(sbrEnvDataLeft, hBitStream);
payloadBits += writeSyntheticCodingData(sbrEnvDataRight, hBitStream);
} /* coupling */
payloadBits += encodeExtendedData(hParametricStereo, hBitStream);
return payloadBits;
}
/*****************************************************************************
description: encodes sbr CPE information
*****************************************************************************/
static int
encodeSbrChannelPairElement (HANDLE_SBR_ENV_DATA sbrEnvDataLeft,
HANDLE_SBR_ENV_DATA sbrEnvDataRight,
HANDLE_BIT_BUF hBitStream,
int data_extra,
int coupling)
{
int payloadBits = 0;
int i = 0;
/* counting previous operation */
payloadBits += WriteBits (hBitStream, 0, 1); /* no reserved bits */
payloadBits += WriteBits (hBitStream, coupling, SI_SBR_COUPLING_BITS);
if (coupling) {
payloadBits += encodeSbrGrid (sbrEnvDataLeft, hBitStream);
payloadBits += encodeSbrDtdf (sbrEnvDataLeft, hBitStream);
payloadBits += encodeSbrDtdf (sbrEnvDataRight, hBitStream);
/* sbrEnvDataLeft->sbr_invf_mode_vec[] */
for (i = 0; i < sbrEnvDataLeft->noOfnoisebands; i++) {
payloadBits += WriteBits (hBitStream, sbrEnvDataLeft->sbr_invf_mode_vec[i], SI_SBR_INVF_MODE_BITS);
}
payloadBits += writeEnvelopeData (sbrEnvDataLeft, hBitStream,1);
payloadBits += writeNoiseLevelData (sbrEnvDataLeft, hBitStream,1);
payloadBits += writeEnvelopeData (sbrEnvDataRight, hBitStream,1);
payloadBits += writeNoiseLevelData (sbrEnvDataRight, hBitStream,1);
payloadBits += writeSyntheticCodingData (sbrEnvDataLeft,hBitStream);
payloadBits += writeSyntheticCodingData (sbrEnvDataRight,hBitStream);
} else { /* no coupling */
payloadBits += encodeSbrGrid (sbrEnvDataLeft, hBitStream);
payloadBits += encodeSbrGrid (sbrEnvDataRight, hBitStream);
payloadBits += encodeSbrDtdf (sbrEnvDataLeft, hBitStream);
payloadBits += encodeSbrDtdf (sbrEnvDataRight, hBitStream);
/* sbrEnvDataLeft->sbr_invf_mode_vec[] */
for (i = 0; i < sbrEnvDataLeft->noOfnoisebands; i++) {
payloadBits += WriteBits (hBitStream, sbrEnvDataLeft->sbr_invf_mode_vec[i],
SI_SBR_INVF_MODE_BITS);
}
/* sbrEnvDataRight->sbr_invf_mode_vec[] */
for (i = 0; i < sbrEnvDataRight->noOfnoisebands; i++) {
payloadBits += WriteBits (hBitStream, sbrEnvDataRight->sbr_invf_mode_vec[i],
SI_SBR_INVF_MODE_BITS);
}
payloadBits += writeEnvelopeData (sbrEnvDataLeft, hBitStream,0);
payloadBits += writeEnvelopeData (sbrEnvDataRight, hBitStream,0);
payloadBits += writeNoiseLevelData (sbrEnvDataLeft, hBitStream,0);
payloadBits += writeNoiseLevelData (sbrEnvDataRight, hBitStream,0);
payloadBits += writeSyntheticCodingData (sbrEnvDataLeft,hBitStream);
payloadBits += writeSyntheticCodingData (sbrEnvDataRight,hBitStream);
} /* coupling */
return payloadBits;
}
