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lavu/tx: improve rdft table generation precision slightly

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Lynne
2023-09-01 06:06:44 +02:00
parent 86aa34d339
commit 59b39d241e
1 changed files with 1 additions and 1 deletions
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libavutil/tx_template.c
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@@ -1648,7 +1648,7 @@ static av_cold int TX_NAME(ff_tx_rdft_init)(AVTXContext *s,
tab = ((TXSample *)s->exp) + len4 + 8; tab = ((TXSample *)s->exp) + len4 + 8;
for (int i = 0; i < len4; i++) for (int i = 0; i < len4; i++)
*tab++ = RESCALE(cos(((float)len/4.0 - (float)i + 0)*f) * (inv ? +1.0 : -1.0)); *tab++ = RESCALE(cos(((len - i*4)/4.0)*f)) * (inv ? 1 : -1);
return 0; return 0;
} }