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Working on some stability issues (appears to be solved by making the pitch

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projection less aggressive). Also, fixed a 64-bit overflow in the stereo mode
and added a "band rotation" function.
This commit is contained in:
Jean-Marc Valin 2007-12-12 00:45:15 +11:00
parent f347dd3b3d
commit 4a897680e3
6 changed files with 140 additions and 17 deletions
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8
libcelt/celt.c
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@ -266,6 +266,9 @@ int celt_encode(CELTEncoder *st, short *pcm)
normalise_bands(st->mode, P, bandEp);
}
band_rotation(st->mode, X, -1);
band_rotation(st->mode, P, -1);
quant_energy(st->mode, bandE, st->oldBandE, &st->enc);
/* Pitch prediction */
@ -295,6 +298,8 @@ int celt_encode(CELTEncoder *st, short *pcm)
//printf ("\n");
}
band_rotation(st->mode, X, 1);
/* Synthesis */
denormalise_bands(st->mode, X, bandE);
@ -495,6 +500,7 @@ int celt_decode(CELTDecoder *st, char *data, int len, short *pcm)
compute_band_energies(st->mode, P, bandEp);
normalise_bands(st->mode, P, bandEp);
}
band_rotation(st->mode, P, -1);
/* Get the pitch gains */
unquant_pitch(gains, st->mode->nbPBands, &dec);
@ -505,6 +511,8 @@ int celt_decode(CELTDecoder *st, char *data, int len, short *pcm)
/* Decode fixed codebook and merge with pitch */
unquant_bands(st->mode, X, P, &dec);
band_rotation(st->mode, X, 1);
/* Synthesis */
denormalise_bands(st->mode, X, bandE);