eden-emu/opus
18
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Making the band definition the same at all frame sizes.

Browse source
This commit is contained in:
Jean-Marc Valin 2010-04-26 07:08:44 -04:00
parent be8d1259af
commit 65ee67ac55
8 changed files with 113 additions and 112 deletions
Download patch file Download diff file Expand all files Collapse all files

106
libcelt/bands.c
View file

@ -48,7 +48,7 @@
#ifdef FIXED_POINT
/* Compute the amplitude (sqrt energy) in each of the bands */
void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bank, int _C)
void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bank, int _C, int M)
{
int i, c, N;
const celt_int16 *eBands = m->eBands;
@ -62,18 +62,18 @@ void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bank
celt_word32 maxval=0;
celt_word32 sum = 0;
j=eBands[i]; do {
j=M*eBands[i]; do {
maxval = MAX32(maxval, X[j+c*N]);
maxval = MAX32(maxval, -X[j+c*N]);
} while (++j<eBands[i+1]);
} while (++j<M*eBands[i+1]);
if (maxval > 0)
{
int shift = celt_ilog2(maxval)-10;
j=eBands[i]; do {
j=M*eBands[i]; do {
sum = MAC16_16(sum, EXTRACT16(VSHR32(X[j+c*N],shift)),
EXTRACT16(VSHR32(X[j+c*N],shift)));
} while (++j<eBands[i+1]);
} while (++j<M*eBands[i+1]);
/* We're adding one here to make damn sure we never end up with a pitch vector that's
larger than unity norm */
bank[i+c*m->nbEBands] = EPSILON+VSHR32(EXTEND32(celt_sqrt(sum)),-shift);
@ -87,7 +87,7 @@ void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bank
}
/* Normalise each band such that the energy is one. */
void normalise_bands(const CELTMode *m, const celt_sig * restrict freq, celt_norm * restrict X, const celt_ener *bank, int _C)
void normalise_bands(const CELTMode *m, const celt_sig * restrict freq, celt_norm * restrict X, const celt_ener *bank, int _C, int M)
{
int i, c, N;
const celt_int16 *eBands = m->eBands;
@ -102,16 +102,16 @@ void normalise_bands(const CELTMode *m, const celt_sig * restrict freq, celt_nor
shift = celt_zlog2(bank[i+c*m->nbEBands])-13;
E = VSHR32(bank[i+c*m->nbEBands], shift);
g = EXTRACT16(celt_rcp(SHL32(E,3)));
j=eBands[i]; do {
j=M*eBands[i]; do {
X[j+c*N] = MULT16_16_Q15(VSHR32(freq[j+c*N],shift-1),g);
} while (++j<eBands[i+1]);
} while (++j<M*eBands[i+1]);
} while (++i<m->nbEBands);
}
}
#else /* FIXED_POINT */
/* Compute the amplitude (sqrt energy) in each of the bands */
void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bank, int _C)
void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bank, int _C, int M)
{
int i, c, N;
const celt_int16 *eBands = m->eBands;
@ -123,7 +123,7 @@ void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bank
{
int j;
celt_word32 sum = 1e-10;
for (j=eBands[i];j<eBands[i+1];j++)
for (j=M*eBands[i];j<M*eBands[i+1];j++)
sum += X[j+c*N]*X[j+c*N];
bank[i+c*m->nbEBands] = sqrt(sum);
/*printf ("%f ", bank[i+c*m->nbEBands]);*/
@ -133,7 +133,7 @@ void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bank
}
#ifdef EXP_PSY
void compute_noise_energies(const CELTMode *m, const celt_sig *X, const celt_word16 *tonality, celt_ener *bank, int _C)
void compute_noise_energies(const CELTMode *m, const celt_sig *X, const celt_word16 *tonality, celt_ener *bank, int _C, int M)
{
int i, c, N;
const celt_int16 *eBands = m->eBands;
@ -145,7 +145,7 @@ void compute_noise_energies(const CELTMode *m, const celt_sig *X, const celt_wor
{
int j;
celt_word32 sum = 1e-10;
for (j=eBands[i];j<eBands[i+1];j++)
for (j=M*eBands[i];j<M*eBands[i+1];j++)
sum += X[j*C+c]*X[j+c*N]*tonality[j];
bank[i+c*m->nbEBands] = sqrt(sum);
/*printf ("%f ", bank[i+c*m->nbEBands]);*/
@ -156,7 +156,7 @@ void compute_noise_energies(const CELTMode *m, const celt_sig *X, const celt_wor
#endif
/* Normalise each band such that the energy is one. */
void normalise_bands(const CELTMode *m, const celt_sig * restrict freq, celt_norm * restrict X, const celt_ener *bank, int _C)
void normalise_bands(const CELTMode *m, const celt_sig * restrict freq, celt_norm * restrict X, const celt_ener *bank, int _C, int M)
{
int i, c, N;
const celt_int16 *eBands = m->eBands;
@ -168,7 +168,7 @@ void normalise_bands(const CELTMode *m, const celt_sig * restrict freq, celt_nor
{
int j;
celt_word16 g = 1.f/(1e-10f+bank[i+c*m->nbEBands]);
for (j=eBands[i];j<eBands[i+1];j++)
for (j=M*eBands[i];j<M*eBands[i+1];j++)
X[j+c*N] = freq[j+c*N]*g;
}
}
@ -176,7 +176,7 @@ void normalise_bands(const CELTMode *m, const celt_sig * restrict freq, celt_nor
#endif /* FIXED_POINT */
void renormalise_bands(const CELTMode *m, celt_norm * restrict X, int _C)
void renormalise_bands(const CELTMode *m, celt_norm * restrict X, int _C, int M)
{
int i, c;
const celt_int16 *eBands = m->eBands;
@ -184,13 +184,13 @@ void renormalise_bands(const CELTMode *m, celt_norm * restrict X, int _C)
for (c=0;c<C;c++)
{
i=0; do {
renormalise_vector(X+eBands[i]+c*m->eBands[m->nbEBands+1], Q15ONE, eBands[i+1]-eBands[i], 1);
renormalise_vector(X+M*eBands[i]+c*M*eBands[m->nbEBands+1], Q15ONE, M*eBands[i+1]-M*eBands[i], 1);
} while (++i<m->nbEBands);
}
}
/* De-normalise the energy to produce the synthesis from the unit-energy bands */
void denormalise_bands(const CELTMode *m, const celt_norm * restrict X, celt_sig * restrict freq, const celt_ener *bank, int _C)
void denormalise_bands(const CELTMode *m, const celt_norm * restrict X, celt_sig * restrict freq, const celt_ener *bank, int _C, int M)
{
int i, c, N;
const celt_int16 *eBands = m->eBands;
@ -208,14 +208,14 @@ void denormalise_bands(const CELTMode *m, const celt_norm * restrict X, celt_sig
{
int j, end;
celt_word32 g = SHR32(bank[i+c*m->nbEBands],1);
j=eBands[i];
end = eBands[i+1];
j=M*eBands[i];
end = M*eBands[i+1];
do {
*f++ = SHL32(MULT16_32_Q15(*x, g),2);
x++;
} while (++j<end);
}
for (i=eBands[m->nbEBands];i<eBands[m->nbEBands+1];i++)
for (i=M*eBands[m->nbEBands];i<M*eBands[m->nbEBands+1];i++)
*f++ = 0;
}
}
@ -341,7 +341,7 @@ void apply_pitch(const CELTMode *m, celt_sig *X, const celt_sig *P, int gain_id,
#ifndef DISABLE_STEREO
static void stereo_band_mix(const CELTMode *m, celt_norm *X, celt_norm *Y, const celt_ener *bank, int stereo_mode, int bandID, int dir)
static void stereo_band_mix(const CELTMode *m, celt_norm *X, celt_norm *Y, const celt_ener *bank, int stereo_mode, int bandID, int dir, int M)
{
int i = bandID;
const celt_int16 *eBands = m->eBands;
@ -364,7 +364,7 @@ static void stereo_band_mix(const CELTMode *m, celt_norm *X, celt_norm *Y, const
a1 = DIV32_16(SHL32(EXTEND32(left),14),norm);
a2 = dir*DIV32_16(SHL32(EXTEND32(right),14),norm);
}
for (j=0;j<eBands[i+1]-eBands[i];j++)
for (j=0;j<M*eBands[i+1]-M*eBands[i];j++)
{
celt_norm r, l;
l = X[j];
@ -377,7 +377,7 @@ static void stereo_band_mix(const CELTMode *m, celt_norm *X, celt_norm *Y, const
#endif /* DISABLE_STEREO */
int folding_decision(const CELTMode *m, celt_norm *X, celt_word16 *average, int *last_decision, int _C)
int folding_decision(const CELTMode *m, celt_norm *X, celt_word16 *average, int *last_decision, int _C, int M)
{
int i, c, N0;
int NR=0;
@ -395,8 +395,8 @@ int folding_decision(const CELTMode *m, celt_norm *X, celt_word16 *average, int
int max_i=0;
celt_word16 max_val=EPSILON;
celt_word32 floor_ener=EPSILON;
celt_norm * restrict x = X+eBands[i]+c*N0;
N = eBands[i+1]-eBands[i];
celt_norm * restrict x = X+M*eBands[i]+c*N0;
N = M*eBands[i+1]-M*eBands[i];
for (j=0;j<N;j++)
{
if (ABS16(x[j])>max_val)
@ -448,7 +448,7 @@ int folding_decision(const CELTMode *m, celt_norm *X, celt_word16 *average, int
}
/* Quantisation of the residual */
void quant_bands(const CELTMode *m, int start, celt_norm * restrict X, const celt_ener *bandE, int *pulses, int shortBlocks, int fold, int resynth, int total_bits, int encode, void *enc_dec)
void quant_bands(const CELTMode *m, int start, celt_norm * restrict X, const celt_ener *bandE, int *pulses, int shortBlocks, int fold, int resynth, int total_bits, int encode, void *enc_dec, int M)
{
int i, j, remaining_bits, balance;
const celt_int16 * restrict eBands = m->eBands;
@ -458,7 +458,7 @@ void quant_bands(const CELTMode *m, int start, celt_norm * restrict X, const cel
SAVE_STACK;
B = shortBlocks ? m->nbShortMdcts : 1;
ALLOC(_norm, eBands[m->nbEBands+1], celt_norm);
ALLOC(_norm, M*eBands[m->nbEBands+1], celt_norm);
norm = _norm;
balance = 0;
@ -471,7 +471,7 @@ void quant_bands(const CELTMode *m, int start, celt_norm * restrict X, const cel
int curr_balance, curr_bits;
N = eBands[i+1]-eBands[i];
N = M*eBands[i+1]-M*eBands[i];
BPbits = m->bits;
if (encode)
@ -502,18 +502,18 @@ void quant_bands(const CELTMode *m, int start, celt_norm * restrict X, const cel
{
int spread = fold ? B : 0;
if (encode)
alg_quant(X+eBands[i], eBands[i+1]-eBands[i], q, spread, resynth, enc_dec);
alg_quant(X+M*eBands[i], N, q, spread, resynth, enc_dec);
else
alg_unquant(X+eBands[i], eBands[i+1]-eBands[i], q, spread, enc_dec);
alg_unquant(X+M*eBands[i], N, q, spread, enc_dec);
} else {
if (resynth)
intra_fold(m, start, eBands[i+1]-eBands[i], norm, X+eBands[i], eBands[i], B);
intra_fold(m, start, N, norm, X+M*eBands[i], M*eBands[i], B, M);
}
if (resynth)
{
celt_word16 n;
n = celt_sqrt(SHL32(EXTEND32(eBands[i+1]-eBands[i]),22));
for (j=eBands[i];j<eBands[i+1];j++)
n = celt_sqrt(SHL32(EXTEND32(N),22));
for (j=M*eBands[i];j<M*eBands[i+1];j++)
norm[j] = MULT16_16_Q15(n,X[j]);
}
}
@ -522,7 +522,7 @@ void quant_bands(const CELTMode *m, int start, celt_norm * restrict X, const cel
#ifndef DISABLE_STEREO
void quant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const celt_ener *bandE, int *pulses, int shortBlocks, int fold, int resynth, int total_bits, ec_enc *enc)
void quant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const celt_ener *bandE, int *pulses, int shortBlocks, int fold, int resynth, int total_bits, ec_enc *enc, int M)
{
int i, j, remaining_bits, balance;
const celt_int16 * restrict eBands = m->eBands;
@ -533,7 +533,7 @@ void quant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const celt_
SAVE_STACK;
B = shortBlocks ? m->nbShortMdcts : 1;
ALLOC(_norm, eBands[m->nbEBands+1], celt_norm);
ALLOC(_norm, M*eBands[m->nbEBands+1], celt_norm);
norm = _norm;
balance = 0;
@ -550,11 +550,11 @@ void quant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const celt_
int qalloc;
celt_norm * restrict X, * restrict Y;
X = _X+eBands[i];
Y = X+eBands[m->nbEBands+1];
X = _X+M*eBands[i];
Y = X+M*eBands[m->nbEBands+1];
BPbits = m->bits;
N = eBands[i+1]-eBands[i];
N = M*eBands[i+1]-M*eBands[i];
tell = ec_enc_tell(enc, BITRES);
if (i != start)
balance -= tell;
@ -575,7 +575,7 @@ void quant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const celt_
if (qb>14)
qb = 14;
stereo_band_mix(m, X, Y, bandE, qb==0, i, 1);
stereo_band_mix(m, X, Y, bandE, qb==0, i, 1, M);
mid = renormalise_vector(X, Q15ONE, N, 1);
side = renormalise_vector(Y, Q15ONE, N, 1);
@ -715,7 +715,7 @@ void quant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const celt_
alg_quant(X, N, q1, spread, resynth, enc);
} else {
if (resynth)
intra_fold(m, start, eBands[i+1]-eBands[i], norm, X, eBands[i], B);
intra_fold(m, start, N, norm, X, M*eBands[i], B, M);
}
if (q2 > 0) {
int spread = fold ? B : 0;
@ -737,16 +737,16 @@ void quant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const celt_
mid = (1.f/32768)*imid;
side = (1.f/32768)*iside;
#endif
n = celt_sqrt(SHL32(EXTEND32(eBands[i+1]-eBands[i]),22));
n = celt_sqrt(SHL32(EXTEND32(N),22));
for (j=0;j<N;j++)
norm[eBands[i]+j] = MULT16_16_Q15(n,X[j]);
norm[M*eBands[i]+j] = MULT16_16_Q15(n,X[j]);
for (j=0;j<N;j++)
X[j] = MULT16_16_Q15(X[j], mid);
for (j=0;j<N;j++)
Y[j] = MULT16_16_Q15(Y[j], side);
stereo_band_mix(m, X, Y, bandE, 0, i, -1);
stereo_band_mix(m, X, Y, bandE, 0, i, -1, M);
renormalise_vector(X, Q15ONE, N, 1);
renormalise_vector(Y, Q15ONE, N, 1);
}
@ -758,7 +758,7 @@ void quant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const celt_
#ifndef DISABLE_STEREO
void unquant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const celt_ener *bandE, int *pulses, int shortBlocks, int fold, int total_bits, ec_dec *dec)
void unquant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const celt_ener *bandE, int *pulses, int shortBlocks, int fold, int total_bits, ec_dec *dec, int M)
{
int i, j, remaining_bits, balance;
const celt_int16 * restrict eBands = m->eBands;
@ -769,7 +769,7 @@ void unquant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const cel
SAVE_STACK;
B = shortBlocks ? m->nbShortMdcts : 1;
ALLOC(_norm, eBands[m->nbEBands+1], celt_norm);
ALLOC(_norm, M*eBands[m->nbEBands+1], celt_norm);
norm = _norm;
balance = 0;
@ -787,11 +787,11 @@ void unquant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const cel
int qalloc;
celt_norm * restrict X, * restrict Y;
X = _X+eBands[i];
Y = X+eBands[m->nbEBands+1];
X = _X+M*eBands[i];
Y = X+M*eBands[m->nbEBands+1];
BPbits = m->bits;
N = eBands[i+1]-eBands[i];
N = M*eBands[i+1]-M*eBands[i];
tell = ec_dec_tell(dec, BITRES);
if (i != start)
balance -= tell;
@ -836,7 +836,7 @@ void unquant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const cel
iside = bitexact_cos(16384-itheta);
delta = (N-1)*(log2_frac(iside,BITRES+2)-log2_frac(imid,BITRES+2))>>2;
}
n = celt_sqrt(SHL32(EXTEND32(eBands[i+1]-eBands[i]),22));
n = celt_sqrt(SHL32(EXTEND32(N),22));
#if 1
if (N==2)
@ -928,7 +928,7 @@ void unquant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const cel
int spread = fold ? B : 0;
alg_unquant(X, N, q1, spread, dec);
} else
intra_fold(m, start, eBands[i+1]-eBands[i], norm, X, eBands[i], B);
intra_fold(m, start, N, norm, X, M*eBands[i], B, M);
if (q2 > 0)
{
int spread = fold ? B : 0;
@ -936,7 +936,7 @@ void unquant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const cel
} else
for (j=0;j<N;j++)
Y[j] = 0;
/*orthogonalize(X+C*eBands[i], X+C*eBands[i]+N, N);*/
/*orthogonalize(X+C*M*eBands[i], X+C*M*eBands[i]+N, N);*/
}
balance += pulses[i] + tell;
@ -948,14 +948,14 @@ void unquant_bands_stereo(const CELTMode *m, int start, celt_norm *_X, const cel
side = (1.f/32768)*iside;
#endif
for (j=0;j<N;j++)
norm[eBands[i]+j] = MULT16_16_Q15(n,X[j]);
norm[M*eBands[i]+j] = MULT16_16_Q15(n,X[j]);
for (j=0;j<N;j++)
X[j] = MULT16_16_Q15(X[j], mid);
for (j=0;j<N;j++)
Y[j] = MULT16_16_Q15(Y[j], side);
stereo_band_mix(m, X, Y, bandE, 0, i, -1);
stereo_band_mix(m, X, Y, bandE, 0, i, -1, M);
renormalise_vector(X, Q15ONE, N, 1);
renormalise_vector(Y, Q15ONE, N, 1);
}

18
libcelt/bands.h
View file

@ -45,7 +45,7 @@
* @param X Spectrum
* @param bands Square root of the energy for each band (returned)
*/
void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bands, int _C);
void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bands, int _C, int M);
/*void compute_noise_energies(const CELTMode *m, const celt_sig *X, const celt_word16 *tonality, celt_ener *bank);*/
@ -55,16 +55,16 @@ void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *band
* @param X Spectrum (returned normalised)
* @param bands Square root of the energy for each band
*/
void normalise_bands(const CELTMode *m, const celt_sig * restrict freq, celt_norm * restrict X, const celt_ener *bands, int _C);
void normalise_bands(const CELTMode *m, const celt_sig * restrict freq, celt_norm * restrict X, const celt_ener *bands, int _C, int M);
void renormalise_bands(const CELTMode *m, celt_norm * restrict X, int _C);
void renormalise_bands(const CELTMode *m, celt_norm * restrict X, int _C, int M);
/** Denormalise each band of X to restore full amplitude
* @param m Mode data
* @param X Spectrum (returned de-normalised)
* @param bands Square root of the energy for each band
*/
void denormalise_bands(const CELTMode *m, const celt_norm * restrict X, celt_sig * restrict freq, const celt_ener *bands, int _C);
void denormalise_bands(const CELTMode *m, const celt_norm * restrict X, celt_sig * restrict freq, const celt_ener *bands, int _C, int M);
/** Compute the pitch predictor gain for each pitch band
* @param m Mode data
@ -77,7 +77,7 @@ int compute_pitch_gain(const CELTMode *m, const celt_sig *X, const celt_sig *P,
void apply_pitch(const CELTMode *m, celt_sig *X, const celt_sig *P, int gain_id, int pred, int _C);
int folding_decision(const CELTMode *m, celt_norm *X, celt_word16 *average, int *last_decision, int _C);
int folding_decision(const CELTMode *m, celt_norm *X, celt_word16 *average, int *last_decision, int _C, int M);
/** Quantisation/encoding of the residual spectrum
* @param m Mode data
@ -85,9 +85,9 @@ int folding_decision(const CELTMode *m, celt_norm *X, celt_word16 *average, int
* @param total_bits Total number of bits that can be used for the frame (including the ones already spent)
* @param enc Entropy encoder
*/
void quant_bands(const CELTMode *m, int start, celt_norm * restrict X, const celt_ener *bandE, int *pulses, int time_domain, int fold, int resynth, int total_bits, int encode, void *enc_dec);
void quant_bands(const CELTMode *m, int start, celt_norm * restrict X, const celt_ener *bandE, int *pulses, int time_domain, int fold, int resynth, int total_bits, int encode, void *enc_dec, int M);
void quant_bands_stereo(const CELTMode *m, int start, celt_norm * restrict X, const celt_ener *bandE, int *pulses, int time_domain, int fold, int resynth, int total_bits, ec_enc *enc);
void quant_bands_stereo(const CELTMode *m, int start, celt_norm * restrict X, const celt_ener *bandE, int *pulses, int time_domain, int fold, int resynth, int total_bits, ec_enc *enc, int M);
/** Decoding of the residual spectrum
* @param m Mode data
@ -95,8 +95,8 @@ void quant_bands_stereo(const CELTMode *m, int start, celt_norm * restrict X, co
* @param total_bits Total number of bits that can be used for the frame (including the ones already spent)
* @param dec Entropy decoder
*/
void unquant_bands_stereo(const CELTMode *m, int start, celt_norm * restrict X, const celt_ener *bandE, int *pulses, int time_domain, int fold, int total_bits, ec_dec *dec);
void unquant_bands_stereo(const CELTMode *m, int start, celt_norm * restrict X, const celt_ener *bandE, int *pulses, int time_domain, int fold, int total_bits, ec_dec *dec, int M);
void stereo_decision(const CELTMode *m, celt_norm * restrict X, int *stereo_mode, int len);
void stereo_decision(const CELTMode *m, celt_norm * restrict X, int *stereo_mode, int len, int M);
#endif /* BANDS_H */

38
libcelt/celt.c
View file

@ -531,7 +531,7 @@ void deemphasis(celt_sig *in, celt_word16 *pcm, int N, int _C, celt_word16 coef,
static void mdct_shape(const CELTMode *mode, celt_norm *X, int start,
int end, int N, int nbShortMdcts,
int mdct_weight_shift, int _C, int renorm)
int mdct_weight_shift, int _C, int renorm, int M)
{
int m, i, c;
const int C = CHANNELS(_C);
@ -544,7 +544,7 @@ static void mdct_shape(const CELTMode *mode, celt_norm *X, int start,
X[i] = (1.f/(1<<mdct_weight_shift))*X[i];
#endif
if (renorm)
renormalise_bands(mode, X, C);
renormalise_bands(mode, X, C, M);
}
@ -585,6 +585,7 @@ int celt_encode_float(CELTEncoder * restrict st, const celt_sig * pcm, celt_sig
int gain_id=0;
int norm_rate;
int start=0;
const int M=st->mode->nbShortMdcts;
SAVE_STACK;
if (check_encoder(st) != CELT_OK)
@ -697,13 +698,13 @@ int celt_encode_float(CELTEncoder * restrict st, const celt_sig * pcm, celt_sig
if (has_pitch)
apply_pitch(st->mode, freq, pitch_freq, gain_id, 1, C);
compute_band_energies(st->mode, freq, bandE, C);
compute_band_energies(st->mode, freq, bandE, C, M);
for (i=0;i<st->mode->nbEBands*C;i++)
bandLogE[i] = amp2Log(bandE[i]);
/* Band normalisation */
normalise_bands(st->mode, freq, X, bandE, C);
if (!shortBlocks && !folding_decision(st->mode, X, &st->tonal_average, &st->fold_decision, C))
normalise_bands(st->mode, freq, X, bandE, C, M);
if (!shortBlocks && !folding_decision(st->mode, X, &st->tonal_average, &st->fold_decision, C, M))
has_fold = 0;
/* Don't use intra energy when we're operating at low bit-rate */
@ -713,7 +714,7 @@ int celt_encode_float(CELTEncoder * restrict st, const celt_sig * pcm, celt_sig
else
st->delayedIntra = 0;
NN = st->mode->eBands[st->mode->nbEBands];
NN = M*st->mode->eBands[st->mode->nbEBands];
if (shortBlocks && !transient_shift)
{
celt_word32 sum[8]={1,1,1,1,1,1,1,1};
@ -757,7 +758,7 @@ int celt_encode_float(CELTEncoder * restrict st, const celt_sig * pcm, celt_sig
} while (m<st->mode->nbShortMdcts-1);
#endif
if (mdct_weight_shift)
mdct_shape(st->mode, X, mdct_weight_pos+1, st->mode->nbShortMdcts, N, st->mode->nbShortMdcts, mdct_weight_shift, C, 0);
mdct_shape(st->mode, X, mdct_weight_pos+1, st->mode->nbShortMdcts, N, st->mode->nbShortMdcts, mdct_weight_shift, C, 0, M);
}
@ -865,16 +866,16 @@ int celt_encode_float(CELTEncoder * restrict st, const celt_sig * pcm, celt_sig
for (i=0;i<st->mode->nbEBands;i++)
offsets[i] = 0;
bits = nbCompressedBytes*8 - ec_enc_tell(&enc, 0) - 1;
compute_allocation(st->mode, start, offsets, bits, pulses, fine_quant, fine_priority, C);
compute_allocation(st->mode, start, offsets, bits, pulses, fine_quant, fine_priority, C, M);
quant_fine_energy(st->mode, start, bandE, st->oldBandE, error, fine_quant, &enc, C);
/* Residual quantisation */
if (C==1)
quant_bands(st->mode, start, X, bandE, pulses, shortBlocks, has_fold, resynth, nbCompressedBytes*8, 1, &enc);
quant_bands(st->mode, start, X, bandE, pulses, shortBlocks, has_fold, resynth, nbCompressedBytes*8, 1, &enc, M);
#ifndef DISABLE_STEREO
else
quant_bands_stereo(st->mode, start, X, bandE, pulses, shortBlocks, has_fold, resynth, nbCompressedBytes*8, &enc);
quant_bands_stereo(st->mode, start, X, bandE, pulses, shortBlocks, has_fold, resynth, nbCompressedBytes*8, &enc, M);
#endif
quant_energy_finalise(st->mode, start, bandE, st->oldBandE, error, fine_quant, fine_priority, nbCompressedBytes*8-ec_enc_tell(&enc, 0), &enc, C);
@ -887,11 +888,11 @@ int celt_encode_float(CELTEncoder * restrict st, const celt_sig * pcm, celt_sig
if (mdct_weight_shift)
{
mdct_shape(st->mode, X, 0, mdct_weight_pos+1, N, st->mode->nbShortMdcts, mdct_weight_shift, C, 1);
mdct_shape(st->mode, X, 0, mdct_weight_pos+1, N, st->mode->nbShortMdcts, mdct_weight_shift, C, 1, M);
}
/* Synthesis */
denormalise_bands(st->mode, X, freq, bandE, C);
denormalise_bands(st->mode, X, freq, bandE, C, M);
CELT_MOVE(st->out_mem, st->out_mem+C*N, C*(MAX_PERIOD+st->overlap-N));
@ -1459,6 +1460,7 @@ int celt_decode_float(CELTDecoder * restrict st, const unsigned char *data, int
int mdct_weight_pos=0;
int gain_id=0;
int start=0;
const int M=st->mode->nbShortMdcts;
SAVE_STACK;
if (check_decoder(st) != CELT_OK)
@ -1530,7 +1532,7 @@ int celt_decode_float(CELTDecoder * restrict st, const unsigned char *data, int
offsets[i] = 0;
bits = len*8 - ec_dec_tell(&dec, 0) - 1;
compute_allocation(st->mode, start, offsets, bits, pulses, fine_quant, fine_priority, C);
compute_allocation(st->mode, start, offsets, bits, pulses, fine_quant, fine_priority, C, M);
/*bits = ec_dec_tell(&dec, 0);
compute_fine_allocation(st->mode, fine_quant, (20*C+len*8/5-(ec_dec_tell(&dec, 0)-bits))/C);*/
@ -1545,20 +1547,20 @@ int celt_decode_float(CELTDecoder * restrict st, const unsigned char *data, int
/* Decode fixed codebook and merge with pitch */
if (C==1)
quant_bands(st->mode, start, X, bandE, pulses, shortBlocks, has_fold, 1, len*8, 0, &dec);
quant_bands(st->mode, start, X, bandE, pulses, shortBlocks, has_fold, 1, len*8, 0, &dec, M);
#ifndef DISABLE_STEREO
else
unquant_bands_stereo(st->mode, start, X, bandE, pulses, shortBlocks, has_fold, len*8, &dec);
unquant_bands_stereo(st->mode, start, X, bandE, pulses, shortBlocks, has_fold, len*8, &dec, M);
#endif
unquant_energy_finalise(st->mode, start, bandE, st->oldBandE, fine_quant, fine_priority, len*8-ec_dec_tell(&dec, 0), &dec, C);
if (mdct_weight_shift)
{
mdct_shape(st->mode, X, 0, mdct_weight_pos+1, N, st->mode->nbShortMdcts, mdct_weight_shift, C, 1);
mdct_shape(st->mode, X, 0, mdct_weight_pos+1, N, st->mode->nbShortMdcts, mdct_weight_shift, C, 1, M);
}
/* Synthesis */
denormalise_bands(st->mode, X, freq, bandE, C);
denormalise_bands(st->mode, X, freq, bandE, C, M);
CELT_MOVE(st->decode_mem, st->decode_mem+C*N, C*(DECODE_BUFFER_SIZE+st->overlap-N));
@ -1566,7 +1568,7 @@ int celt_decode_float(CELTDecoder * restrict st, const unsigned char *data, int
if (has_pitch)
apply_pitch(st->mode, freq, pitch_freq, gain_id, 0, C);
for (i=0;i<st->mode->eBands[start];i++)
for (i=0;i<M*st->mode->eBands[start];i++)
freq[i] = 0;
/* Compute inverse MDCTs */

35
libcelt/modes.c
View file

@ -119,14 +119,13 @@ static const int band_allocation[BARK_BANDS*BITALLOC_SIZE] =
static celt_int16 *compute_ebands(celt_int32 Fs, int frame_size, int nbShortMdcts, int *nbEBands)
{
int min_bins = 2;
celt_int16 *eBands;
int i, res, min_width, lin, low, high, nBark, offset=0;
if (min_bins < nbShortMdcts)
min_bins = nbShortMdcts;
frame_size /= nbShortMdcts;
nbShortMdcts = 1;
res = (Fs+frame_size)/(2*frame_size);
min_width = min_bins*res;
min_width = res;
/* Find the number of critical bands supported by our sampling rate */
for (nBark=1;nBark<BARK_BANDS;nBark++)
@ -138,7 +137,7 @@ static celt_int16 *compute_ebands(celt_int32 Fs, int frame_size, int nbShortMdct
if (bark_freq[lin+1]-bark_freq[lin] >= min_width)
break;
low = (bark_freq[lin]+res*min_bins/2)/(res*min_bins);
low = (bark_freq[lin]+res/2)/res;
high = nBark-lin;
*nbEBands = low+high;
eBands = celt_alloc(sizeof(celt_int16)*(*nbEBands+2));
@ -148,21 +147,21 @@ static celt_int16 *compute_ebands(celt_int32 Fs, int frame_size, int nbShortMdct
/* Linear spacing (min_width) */
for (i=0;i<low;i++)
eBands[i] = min_bins*i;
eBands[i] = i;
if (low>0)
offset = eBands[low-1]*res - bark_freq[lin-1];
/* Spacing follows critical bands */
for (i=0;i<high;i++)
{
int target = bark_freq[lin+i];
eBands[i+low] = (target+(offset+res*nbShortMdcts)/2)/(res*nbShortMdcts)*nbShortMdcts;
eBands[i+low] = (target+(offset+res)/2)/res;
offset = eBands[i+low]*res - target;
}
/* Enforce the minimum spacing at the boundary */
for (i=0;i<*nbEBands;i++)
if (eBands[i] < min_bins*i)
eBands[i] = min_bins*i;
eBands[*nbEBands] = (bark_freq[nBark]+res*nbShortMdcts/2)/(res*nbShortMdcts)*nbShortMdcts;
if (eBands[i] < i)
eBands[i] = i;
eBands[*nbEBands] = (bark_freq[nBark]+res/2)/res;
eBands[*nbEBands+1] = frame_size;
if (eBands[*nbEBands] > eBands[*nbEBands+1])
eBands[*nbEBands] = eBands[*nbEBands+1];
@ -170,10 +169,10 @@ static celt_int16 *compute_ebands(celt_int32 Fs, int frame_size, int nbShortMdct
{
if (eBands[i+1]-eBands[i] < eBands[i]-eBands[i-1])
{
eBands[i] -= (2*eBands[i]-eBands[i-1]-eBands[i+1]+nbShortMdcts)/(2*nbShortMdcts)*nbShortMdcts;
eBands[i] -= (2*eBands[i]-eBands[i-1]-eBands[i+1])/2;
}
}
/*for (i=0;i<*nbEBands+1;i++)
/*for (i=0;i<=*nbEBands+1;i++)
printf ("%d ", eBands[i]);
printf ("\n");
exit(1);*/
@ -181,7 +180,7 @@ static celt_int16 *compute_ebands(celt_int32 Fs, int frame_size, int nbShortMdct
return eBands;
}
static void compute_allocation_table(CELTMode *mode, int res)
static void compute_allocation_table(CELTMode *mode, int res, int M)
{
int i, j, nBark;
celt_int16 *allocVectors;
@ -209,7 +208,7 @@ static void compute_allocation_table(CELTMode *mode, int res)
low = bark_freq[j];
high = bark_freq[j+1];
edge = mode->eBands[eband+1]*res;
edge = M*mode->eBands[eband+1]*res;
while (edge <= high && eband < mode->nbEBands)
{
celt_int32 num;
@ -227,7 +226,7 @@ static void compute_allocation_table(CELTMode *mode, int res)
/* Move to next eband */
current = 0;
eband++;
edge = mode->eBands[eband+1]*res;
edge = M*mode->eBands[eband+1]*res;
}
current += alloc;
}
@ -361,7 +360,7 @@ CELTMode *celt_mode_create(celt_int32 Fs, int frame_size, int *error)
else
mode->overlap = (frame_size>>3)<<2;
compute_allocation_table(mode, res);
compute_allocation_table(mode, res, mode->nbShortMdcts);
if (mode->allocVectors==NULL)
goto failure;
@ -378,7 +377,7 @@ CELTMode *celt_mode_create(celt_int32 Fs, int frame_size, int *error)
#endif
mode->window = window;
mode->bits = (const celt_int16 **)compute_alloc_cache(mode, 1);
mode->bits = (const celt_int16 **)compute_alloc_cache(mode, 1, mode->nbShortMdcts);
if (mode->bits==NULL)
goto failure;
@ -387,7 +386,7 @@ CELTMode *celt_mode_create(celt_int32 Fs, int frame_size, int *error)
goto failure;
for (i=0;i<mode->nbEBands;i++)
logN[i] = log2_frac(mode->eBands[i+1]-mode->eBands[i], BITRES);
logN[i] = log2_frac(mode->nbShortMdcts*(mode->eBands[i+1]-mode->eBands[i]), BITRES);
mode->logN = logN;
#endif /* !STATIC_MODES */

14
libcelt/rate.c
View file

@ -46,7 +46,7 @@
#ifndef STATIC_MODES
celt_int16 **compute_alloc_cache(CELTMode *m, int C)
celt_int16 **compute_alloc_cache(CELTMode *m, int C, int M)
{
int i, prevN;
int error = 0;
@ -60,8 +60,8 @@ celt_int16 **compute_alloc_cache(CELTMode *m, int C)
prevN = -1;
for (i=0;i<m->nbEBands;i++)
{
int N = C*(eBands[i+1]-eBands[i]);
if (N == prevN && eBands[i] < m->pitchEnd)
int N = C*M*(eBands[i+1]-eBands[i]);
if (N == prevN && M*eBands[i] < m->pitchEnd)
{
bits[i] = bits[i-1];
} else {
@ -102,7 +102,7 @@ celt_int16 **compute_alloc_cache(CELTMode *m, int C)
static inline void interp_bits2pulses(const CELTMode *m, int start, int *bits1, int *bits2, int total, int *bits, int *ebits, int *fine_priority, int len, int _C)
static inline void interp_bits2pulses(const CELTMode *m, int start, int *bits1, int *bits2, int total, int *bits, int *ebits, int *fine_priority, int len, int _C, int M)
{
int psum;
int lo, hi;
@ -145,7 +145,7 @@ static inline void interp_bits2pulses(const CELTMode *m, int start, int *bits1,
int N, d;
int offset;
N=m->eBands[j+1]-m->eBands[j];
N=M*(m->eBands[j+1]-m->eBands[j]);
/* Compensate for the extra DoF in stereo */
d=(C*N+ ((C==2 && N>2) ? 1 : 0))<<BITRES;
offset = FINE_OFFSET - m->logN[j];
@ -173,7 +173,7 @@ static inline void interp_bits2pulses(const CELTMode *m, int start, int *bits1,
RESTORE_STACK;
}
void compute_allocation(const CELTMode *m, int start, int *offsets, int total, int *pulses, int *ebits, int *fine_priority, int _C)
void compute_allocation(const CELTMode *m, int start, int *offsets, int total, int *pulses, int *ebits, int *fine_priority, int _C, int M)
{
int lo, hi, len, j;
const int C = CHANNELS(_C);
@ -216,7 +216,7 @@ void compute_allocation(const CELTMode *m, int start, int *offsets, int total, i
if (bits2[j] < 0)
bits2[j] = 0;
}
interp_bits2pulses(m, start, bits1, bits2, total, pulses, ebits, fine_priority, len, C);
interp_bits2pulses(m, start, bits1, bits2, total, pulses, ebits, fine_priority, len, C, M);
RESTORE_STACK;
}

4
libcelt/rate.h
View file

@ -155,7 +155,7 @@ static inline int pulses2bits(const celt_int16 *cache, int N, int pulses)
}
/** Computes a cache of the pulses->bits mapping in each band */
celt_int16 **compute_alloc_cache(CELTMode *m, int C);
celt_int16 **compute_alloc_cache(CELTMode *m, int C, int M);
/** Compute the pulse allocation, i.e. how many pulses will go in each
* band.
@ -166,7 +166,7 @@ celt_int16 **compute_alloc_cache(CELTMode *m, int C);
@param pulses Number of pulses per band (returned)
@return Total number of bits allocated
*/
void compute_allocation(const CELTMode *m, int start, int *offsets, int total, int *pulses, int *ebits, int *fine_priority, int _C);
void compute_allocation(const CELTMode *m, int start, int *offsets, int total, int *pulses, int *ebits, int *fine_priority, int _C, int M);
#endif

8
libcelt/vq.c
View file

@ -473,11 +473,11 @@ celt_word16 renormalise_vector(celt_norm *X, celt_word16 value, int N, int strid
return celt_sqrt(E);
}
static void fold(const CELTMode *m, int start, int N, const celt_norm * restrict Y, celt_norm * restrict P, int N0, int B)
static void fold(const CELTMode *m, int start, int N, const celt_norm * restrict Y, celt_norm * restrict P, int N0, int B, int M)
{
int j;
int id = N0 % B;
while (id < m->eBands[start])
while (id < M*m->eBands[start])
id += B;
/* Here, we assume that id will never be greater than N0, i.e. that
no band is wider than N0. In the unlikely case it happens, we set
@ -500,9 +500,9 @@ static void fold(const CELTMode *m, int start, int N, const celt_norm * restrict
P[j] = Y[id++];
}
void intra_fold(const CELTMode *m, int start, int N, const celt_norm * restrict Y, celt_norm * restrict P, int N0, int B)
void intra_fold(const CELTMode *m, int start, int N, const celt_norm * restrict Y, celt_norm * restrict P, int N0, int B, int M)
{
fold(m, start, N, Y, P, N0, B);
fold(m, start, N, Y, P, N0, B, M);
renormalise_vector(P, Q15ONE, N, 1);
}

2
libcelt/vq.h
View file

@ -75,6 +75,6 @@ celt_word16 renormalise_vector(celt_norm *X, celt_word16 value, int N, int strid
* @param B Stride (number of channels multiplied by the number of MDCTs per frame)
* @param N0 Number of valid offsets
*/
void intra_fold(const CELTMode *m, int start, int N, const celt_norm * restrict Y, celt_norm * restrict P, int N0, int B);
void intra_fold(const CELTMode *m, int start, int N, const celt_norm * restrict Y, celt_norm * restrict P, int N0, int B, int M);
#endif /* VQ_H */