| /external/webrtc/webrtc/modules/audio_coding/codecs/ilbc/ |
| lsf_check.c | 23 * check for stability of lsf coefficients
27 int16_t *lsf, /* LSF parameters */
28 int dim, /* dimension of LSF */
37 /* LSF separation check*/
44 if ((lsf[pos+1]-lsf[pos])<eps) {
46 if (lsf[pos+1]<lsf[pos]) {
47 lsf[pos+1]= lsf[pos]+eps2
[all...] |
| lsf_check.h | 25 * check for stability of lsf coefficients
29 int16_t *lsf, /* LSF parameters */
30 int dim, /* dimension of LSF */
|
| lsf_to_poly.h | 25 * Convert from LSF coefficients to A coefficients
30 int16_t *lsf /* (i) line spectral frequencies in Q13 */
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| poly_to_lsf.h | 25 * conversion from lpc coefficients to lsf coefficients
29 int16_t *lsf, /* (o) lsf coefficients (Q13) */
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| poly_to_lsf.c | 25 int16_t *lsf, /* (o) lsf coefficients (Q13) */
30 WebRtcIlbcfix_Lsp2Lsf(lsp, lsf, 10);
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| lsf_to_lsp.h | 25 * conversion from lsf to lsp coefficients
29 int16_t *lsf, /* (i) lsf in Q13 values between 0 and pi */
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| lsp_to_lsf.h | 25 * conversion from LSP coefficients to LSF coefficients
30 int16_t *lsf, /* (o) Lsf vector 0...Pi in Q13
31 (ordered, so that lsf[i]<lsf[i+1]) */
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| simple_lpc_analysis.h | 29 int16_t *lsf, /* (o) lsf coefficients */
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| simple_lsf_quant.c | 24 * lsf quantizer (subrutine to LPCencode)
28 int16_t *lsfdeq, /* (o) dequantized lsf coefficients
31 int16_t *lsf, /* (i) the lsf coefficient vector to be
33 int16_t lpc_n /* (i) number of lsf sets to quantize */
36 /* Quantize first LSF with memoryless split VQ */
37 WebRtcIlbcfix_SplitVq( lsfdeq, index, lsf,
41 /* Quantize second LSF with memoryless split VQ */
43 lsf + LPC_FILTERORDER, (int16_t*)WebRtcIlbcfix_kLsfCb,
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| lpc_encode.c | 35 int16_t *lsf_index, /* (o) lsf quantization index */
41 int16_t lsf[LPC_FILTERORDER * LPC_N_MAX]; local
44 /* Calculate LSF's from the input speech */
45 WebRtcIlbcfix_SimpleLpcAnalysis(lsf, data, iLBCenc_inst);
47 /* Quantize the LSF's */
48 WebRtcIlbcfix_SimpleLsfQ(lsfdeq, lsf_index, lsf, iLBCenc_inst->lpc_n);
50 /* Stableize the LSF's if needed */
54 the optimal LSF and the dequantized LSF */
56 lsf, lsfdeq, iLBCenc_inst->lsfold
[all...] |
| simple_lsf_quant.h | 25 * lsf quantizer (subrutine to LPCencode)
29 int16_t *lsfdeq, /* (o) dequantized lsf coefficients
32 int16_t *lsf, /* (i) the lsf coefficient vector to be
34 int16_t lpc_n /* (i) number of lsf sets to quantize */
|
| simple_interpolate_lsf.h | 25 * lsf interpolator (subrutine to LPCencode)
31 interpolated lsf Q12 */
34 interpolated lsf Q12 */
35 int16_t *lsf, /* (i) the unquantized lsf coefficients Q13 */
36 int16_t *lsfdeq, /* (i) the dequantized lsf coefficients Q13 */
37 int16_t *lsfold, /* (i) the unquantized lsf coefficients of
39 int16_t *lsfdeqold, /* (i) the dequantized lsf coefficients of the
|
| lsf_to_lsp.c | 23 * conversion from lsf to lsp coefficients
27 int16_t *lsf, /* (i) lsf in Q13 values between 0 and pi */
39 freq = (int16_t)((lsf[i] * 20861) >> 15);
|
| simple_interpolate_lsf.c | 25 * lsf interpolator (subrutine to LPCencode)
31 interpolated lsf Q12 */
34 interpolated lsf Q12 */
35 int16_t *lsf, /* (i) the unquantized lsf coefficients Q13 */
36 int16_t *lsfdeq, /* (i) the dequantized lsf coefficients Q13 */
37 int16_t *lsfold, /* (i) the unquantized lsf coefficients of
39 int16_t *lsfdeqold, /* (i) the dequantized lsf coefficients of the
52 lsf2 = lsf + length;
58 lsf coefficients *
[all...] |
| lsp_to_lsf.c | 23 * conversion from LSP coefficients to LSF coefficients
28 int16_t *lsf, /* (o) Lsf vector 0...Pi in Q13
29 (ordered, so that lsf[i]<lsf[i+1]) */
35 int16_t freq; /* lsf/(2*pi) (Q16) */
44 For each LSP the lsf is calculated by first order approximation
48 lsfPtr = &lsf[9];
76 /* lsf = freq*2*pi */
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| lsf_to_poly.c | 26 int16_t *lsf /* (i) line spectral frequencies in Q13 */
36 /* Convert lsf to lsp */
37 WebRtcIlbcfix_Lsf2Lsp(lsf, lsp, LPC_FILTERORDER);
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| simple_lpc_analysis.c | 30 int16_t *lsf, /* (o) lsf coefficients */
85 /* Convert from A to LSF representation */
86 WebRtcIlbcfix_Poly2Lsf(lsf + k*LPC_FILTERORDER, A);
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| pack_bits.c | 38 (*bitstreamPtr) = ((uint16_t)enc_bits->lsf[0])<<10; /* Bit 0..5 */
39 (*bitstreamPtr) |= (enc_bits->lsf[1])<<3; /* Bit 6..12 */
40 (*bitstreamPtr) |= (enc_bits->lsf[2]&0x70)>>4; /* Bit 13..15 */
43 (*bitstreamPtr) = ((uint16_t)enc_bits->lsf[2]&0xF)<<12; /* Bit 0..3 */
60 (*bitstreamPtr) |= (enc_bits->lsf[3])<<6; /* Bit 4..9 */
61 (*bitstreamPtr) |= (enc_bits->lsf[4]&0x7E)>>1; /* Bit 10..15 */
64 (*bitstreamPtr) = ((uint16_t)enc_bits->lsf[4]&0x1)<<15; /* Bit 0 */
65 (*bitstreamPtr) |= (enc_bits->lsf[5])<<8; /* Bit 1..7 */
|
| unpack_bits.c | 37 enc_bits->lsf[0] = (*bitstreamPtr)>>10; /* Bit 0..5 */
38 enc_bits->lsf[1] = ((*bitstreamPtr)>>3)&0x7F; /* Bit 6..12 */
39 enc_bits->lsf[2] = ((*bitstreamPtr)&0x7)<<4; /* Bit 13..15 */
42 enc_bits->lsf[2] |= ((*bitstreamPtr)>>12)&0xF; /* Bit 0..3 */
59 enc_bits->lsf[3] = ((*bitstreamPtr)>>6)&0x3F; /* Bit 4..9 */
60 enc_bits->lsf[4] = ((*bitstreamPtr)<<1)&0x7E; /* Bit 10..15 */
63 enc_bits->lsf[4] |= ((*bitstreamPtr)>>15)&0x1; /* Bit 0 */
64 enc_bits->lsf[5] = ((*bitstreamPtr)>>8)&0x7F; /* Bit 1..7 */
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| /frameworks/av/media/libstagefright/codecs/amrnb/common/include/ |
| lsfwt.h | 103 Word16 *lsf, /* input : LSF vector */
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| reorder.h | 95 Word16 *lsf, /* (i/o) : vector of LSFs (range: 0<=val<=0.5) */
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| lsp_lsf.h | 101 Word16 lsf[], /* (i) : lsf[m] normalized (range: 0.0<=val<=0.5) */
108 Word16 lsf[], /* (o) : lsf[m] normalized (range: 0.0<=val<=0.5) */
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| /frameworks/av/media/libstagefright/codecs/amrnb/common/src/ |
| reorder.cpp | 85 lsf = vector of LSFs (range: 0<=val<=0.5)(Word16)
93 lsf -> reordered vector of LSFs (Word16)
124 Word16 *lsf, // (i/o) : vector of LSFs (range: 0<=val<=0.5)
139 if (sub (lsf[i], lsf_min) < 0)
141 lsf[i] = lsf_min;
143 lsf_min = add (lsf[i], min_dist);
174 Word16 *lsf, /* (i/o) : vector of LSFs (range: 0<=val<=0.5) */
182 Word16 *p_lsf = &lsf[0];
|
| lsp_lsf.cpp | 72 line spectral frequencies (LSF) and vice-versa.
127 lsf = buffer containing normalized line spectral frequencies; valid
148 This function performs the LSF to LSP transformation using the equation:
150 lsf[i] = arccos(lsp[i])/(2*pi)
152 The transformation from lsp[i] to lsf[i] is approximated by a look-up table
169 Word16 lsf[], // (i) : lsf[m] normalized (range: 0.0<=val<=0.5)
179 ind = shr (lsf[i], 8); // ind = b8-b15 of lsf[i]
180 offset = lsf[i] & 0x00ff; // offset = b0-b7 of lsf[i
[all...] |
| lsfwt.cpp | 55 lsf -- Pointer to Word16 -- LSF vector
73 Compute LSF weighting factors
75 d[i] = lsf[i+1] - lsf[i-1]
187 Word16 *lsf, /* input : LSF vector */
196 Word16 *p_lsf = &lsf[0];
197 Word16 *p_lsf_2 = &lsf[1];
201 /* wf[0] = lsf[1] - 0 *
[all...] |
