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Giving up on reusing the saved overlap in the PLC

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This commit is contained in:
Jean-Marc Valin 2010-11-06 20:30:17 -04:00
parent bc4a002369
commit d7231dd1a9
1 changed files with 5 additions and 14 deletions
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17
libcelt/celt.c
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@ -1507,23 +1507,14 @@ static void celt_decode_lost(CELTDecoder * restrict st, celt_word16 * restrict p
previous and next frames */
for (i=0;i<overlap/2;i++)
{
celt_word32 tmp1, tmp2;
tmp1 = MULT16_32_Q15(st->mode->window[i ], e[i ]) -
MULT16_32_Q15(st->mode->window[overlap-i-1], e[overlap-i-1]);
tmp2 = MULT16_32_Q15(st->mode->window[i], e[N+overlap-1-i]) +
celt_word32 tmp;
tmp = MULT16_32_Q15(st->mode->window[i], e[N+overlap-1-i]) +
MULT16_32_Q15(st->mode->window[overlap-i-1], e[N+i ]);
out_mem[c][MAX_PERIOD+i] = MULT16_32_Q15(st->mode->window[overlap-i-1], tmp2);
out_mem[c][MAX_PERIOD+overlap-i-1] = MULT16_32_Q15(st->mode->window[i], tmp2);
out_mem[c][MAX_PERIOD-N+i] += MULT16_32_Q15(st->mode->window[i], tmp1);
out_mem[c][MAX_PERIOD-N+overlap-i-1] -= MULT16_32_Q15(st->mode->window[overlap-i-1], tmp1);
out_mem[c][MAX_PERIOD+i] = MULT16_32_Q15(st->mode->window[overlap-i-1], tmp);
out_mem[c][MAX_PERIOD+overlap-i-1] = MULT16_32_Q15(st->mode->window[i], tmp);
}
#if 0
for (i=0;i<N-overlap;i++)
out_mem[c][MAX_PERIOD-N+overlap+i] = e[overlap+i];
#else
for (i=0;i<N;i++)
out_mem[c][MAX_PERIOD-N+i] = e[i];
#endif
#ifdef ENABLE_POSTFILTER
/* Apply pre-filter to the MDCT overlap for the next frame (post-filter will be applied then) */