bool WebRtcIlbcfix_CbConstruct(
int16_t* decvector, /* (o) Decoded vector */
const int16_t* index, /* (i) Codebook indices */
const int16_t* gain_index, /* (i) Gain quantization indices */
int16_t* mem, /* (i) Buffer for codevector construction */
size_t lMem, /* (i) Length of buffer */
size_t veclen) { /* (i) Length of vector */
size_t j;
int16_t gain[CB_NSTAGES];
/* Stack based */
int16_t cbvec0[SUBL];
int16_t cbvec1[SUBL];
int16_t cbvec2[SUBL];
int32_t a32;
int16_t *gainPtr;
/* gain de-quantization */
gain[0] = WebRtcIlbcfix_GainDequant(gain_index[0], 16384, 0);
gain[1] = WebRtcIlbcfix_GainDequant(gain_index[1], gain[0], 1);
gain[2] = WebRtcIlbcfix_GainDequant(gain_index[2], gain[1], 2);
/* codebook vector construction and construction of total vector */
/* Stack based */
if (!WebRtcIlbcfix_GetCbVec(cbvec0, mem, (size_t)index[0], lMem, veclen))
return false; // Failure.
if (!WebRtcIlbcfix_GetCbVec(cbvec1, mem, (size_t)index[1], lMem, veclen))
return false; // Failure.
if (!WebRtcIlbcfix_GetCbVec(cbvec2, mem, (size_t)index[2], lMem, veclen))
return false; // Failure.
gainPtr = &gain[0];
for (j=0;j<veclen;j++) {
a32 = (*gainPtr++) * cbvec0[j];
a32 += (*gainPtr++) * cbvec1[j];
a32 = OverflowingAddS32S32ToS32(a32, (*gainPtr) * cbvec2[j]);
gainPtr -= 2;
decvector[j] = (int16_t)((a32 + 8192) >> 14);
}
return true; // Success.
}
void WebRtcIlbcfix_CbConstruct(
WebRtc_Word16 *decvector, /* (o) Decoded vector */
WebRtc_Word16 *index, /* (i) Codebook indices */
WebRtc_Word16 *gain_index, /* (i) Gain quantization indices */
WebRtc_Word16 *mem, /* (i) Buffer for codevector construction */
WebRtc_Word16 lMem, /* (i) Length of buffer */
WebRtc_Word16 veclen /* (i) Length of vector */
){
int j;
WebRtc_Word16 gain[CB_NSTAGES];
/* Stack based */
WebRtc_Word16 cbvec0[SUBL];
WebRtc_Word16 cbvec1[SUBL];
WebRtc_Word16 cbvec2[SUBL];
WebRtc_Word32 a32;
WebRtc_Word16 *gainPtr;
/* gain de-quantization */
gain[0] = WebRtcIlbcfix_GainDequant(gain_index[0], 16384, 0);
gain[1] = WebRtcIlbcfix_GainDequant(gain_index[1], gain[0], 1);
gain[2] = WebRtcIlbcfix_GainDequant(gain_index[2], gain[1], 2);
/* codebook vector construction and construction of total vector */
/* Stack based */
WebRtcIlbcfix_GetCbVec(cbvec0, mem, index[0], lMem, veclen);
WebRtcIlbcfix_GetCbVec(cbvec1, mem, index[1], lMem, veclen);
WebRtcIlbcfix_GetCbVec(cbvec2, mem, index[2], lMem, veclen);
gainPtr = &gain[0];
for (j=0;j<veclen;j++) {
a32 = WEBRTC_SPL_MUL_16_16(*gainPtr++, cbvec0[j]);
a32 += WEBRTC_SPL_MUL_16_16(*gainPtr++, cbvec1[j]);
a32 += WEBRTC_SPL_MUL_16_16(*gainPtr, cbvec2[j]);
gainPtr -= 2;
decvector[j] = (WebRtc_Word16) WEBRTC_SPL_RSHIFT_W32(a32 + 8192, 14);
}
return;
}
void WebRtcIlbcfix_CbConstruct(
int16_t *decvector, /* (o) Decoded vector */
int16_t *index, /* (i) Codebook indices */
int16_t *gain_index, /* (i) Gain quantization indices */
int16_t *mem, /* (i) Buffer for codevector construction */
int16_t lMem, /* (i) Length of buffer */
int16_t veclen /* (i) Length of vector */
){
int j;
int16_t gain[CB_NSTAGES];
/* Stack based */
int16_t cbvec0[SUBL];
int16_t cbvec1[SUBL];
int16_t cbvec2[SUBL];
int32_t a32;
int16_t *gainPtr;
/* gain de-quantization */
gain[0] = WebRtcIlbcfix_GainDequant(gain_index[0], 16384, 0);
gain[1] = WebRtcIlbcfix_GainDequant(gain_index[1], gain[0], 1);
gain[2] = WebRtcIlbcfix_GainDequant(gain_index[2], gain[1], 2);
/* codebook vector construction and construction of total vector */
/* Stack based */
WebRtcIlbcfix_GetCbVec(cbvec0, mem, index[0], lMem, veclen);
WebRtcIlbcfix_GetCbVec(cbvec1, mem, index[1], lMem, veclen);
WebRtcIlbcfix_GetCbVec(cbvec2, mem, index[2], lMem, veclen);
gainPtr = &gain[0];
for (j=0;j<veclen;j++) {
a32 = (*gainPtr++) * cbvec0[j];
a32 += (*gainPtr++) * cbvec1[j];
a32 += (*gainPtr) * cbvec2[j];
gainPtr -= 2;
decvector[j] = (int16_t)((a32 + 8192) >> 14);
}
return;
}
