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cleaning up

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This commit is contained in:
Jean-Marc Valin 2008-01-31 10:05:39 +11:00
parent ccc988b822
commit 3d3bb68536
3 changed files with 32 additions and 68 deletions
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56
libcelt/celt.c
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@ -143,49 +143,6 @@ void celt_encoder_destroy(CELTEncoder *st)
celt_free(st);
}
static void haar1(float *X, int N, int stride)
{
int i, k;
for (k=0;k<stride;k++)
{
for (i=k;i<N*stride;i+=2*stride)
{
float a, b;
a = X[i];
b = X[i+stride];
X[i] = .707107f*(a+b);
X[i+stride] = .707107f*(a-b);
}
}
}
static void time_dct(float *X, int N, int B, int stride)
{
switch (B)
{
case 1:
break;
case 2:
haar1(X, B*N, stride);
break;
default:
celt_warning("time_dct not defined for B > 2");
};
}
static void time_idct(float *X, int N, int B, int stride)
{
switch (B)
{
case 1:
break;
case 2:
haar1(X, B*N, stride);
break;
default:
celt_warning("time_dct not defined for B > 2");
};
}
static void compute_mdcts(mdct_lookup *mdct_lookup, float *window, float *in, float *out, int N, int B, int C)
{
@ -234,7 +191,7 @@ static void compute_inv_mdcts(mdct_lookup *mdct_lookup, float *window, float *X,
}
}
int celt_encode(CELTEncoder *st, short *pcm, unsigned char *compressed, int nbCompressedBytes)
int celt_encode(CELTEncoder *st, celt_int16_t *pcm, unsigned char *compressed, int nbCompressedBytes)
{
int i, c, N, B, C, N4;
N = st->block_size;
@ -328,9 +285,6 @@ int celt_encode(CELTEncoder *st, short *pcm, unsigned char *compressed, int nbCo
//for (i=30;i<N*B;i++)
// X[i*C+1] = P[i*C+1] = 0;
/* Get a tiny bit more frequency resolution and prevent unstable energy when quantising */
time_dct(X, N, B, C);
time_dct(P, N, B, C);
/* Pitch prediction */
compute_pitch_gain(st->mode, X, P, gains, bandE);
@ -349,9 +303,7 @@ int celt_encode(CELTEncoder *st, short *pcm, unsigned char *compressed, int nbCo
/* Residual quantisation */
quant_bands(st->mode, X, P, mask, &st->alloc, nbCompressedBytes*8, &st->enc);
time_idct(X, N, B, C);
if (C==2)
//haar1(X, B*N*C, 1);
stereo_mix(st->mode, X, bandE, -1);
renormalise_bands(st->mode, X);
@ -544,7 +496,7 @@ static void celt_decode_lost(CELTDecoder *st, short *pcm)
}
}
int celt_decode(CELTDecoder *st, char *data, int len, short *pcm)
int celt_decode(CELTDecoder *st, char *data, int len, celt_int16_t *pcm)
{
int i, c, N, B, C;
N = st->block_size;
@ -585,9 +537,7 @@ int celt_decode(CELTDecoder *st, char *data, int len, short *pcm)
}
if (C==2)
//haar1(P, B*N*C, 1);
stereo_mix(st->mode, P, bandE, 1);
time_dct(P, N, B, C);
/* Get the pitch gains */
unquant_pitch(gains, st->mode->nbPBands, &dec);
@ -598,9 +548,7 @@ int celt_decode(CELTDecoder *st, char *data, int len, short *pcm)
/* Decode fixed codebook and merge with pitch */
unquant_bands(st->mode, X, P, &st->alloc, len*8, &dec);
time_idct(X, N, B, C);
if (C==2)
//haar1(X, B*N*C, 1);
stereo_mix(st->mode, X, bandE, -1);
renormalise_bands(st->mode, X);