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Code Issues Releases Activity

lavu/tx: rotate 3 & 15-point exptabs

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This just inverts their signs. Simplifies SIMD.
This commit is contained in:
Lynne 2022-09-10 02:31:43 +02:00
parent 51172223fd
commit c92edd969a
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GPG Key ID: A2FEA5F03F034464
1 changed files with 5 additions and 5 deletions
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10
libavutil/tx_template.c
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@ -109,11 +109,11 @@ static av_cold void TX_TAB(ff_tx_init_tab_53)(void)
TX_TAB(ff_tx_tab_53)[0] = RESCALE(cos(2 * M_PI / 12));
TX_TAB(ff_tx_tab_53)[1] = RESCALE(cos(2 * M_PI / 12));
TX_TAB(ff_tx_tab_53)[2] = RESCALE(cos(2 * M_PI / 6));
TX_TAB(ff_tx_tab_53)[3] = RESCALE(cos(2 * M_PI / 6));
TX_TAB(ff_tx_tab_53)[3] = RESCALE(cos(8 * M_PI / 6));
TX_TAB(ff_tx_tab_53)[4] = RESCALE(cos(2 * M_PI / 5));
TX_TAB(ff_tx_tab_53)[5] = RESCALE(sin(2 * M_PI / 5));
TX_TAB(ff_tx_tab_53)[5] = RESCALE(sin(8 * M_PI / 5));
TX_TAB(ff_tx_tab_53)[6] = RESCALE(cos(2 * M_PI / 10));
TX_TAB(ff_tx_tab_53)[7] = RESCALE(sin(2 * M_PI / 10));
TX_TAB(ff_tx_tab_53)[7] = RESCALE(sin(6 * M_PI / 5));
}
static av_cold void TX_TAB(ff_tx_init_tab_7)(void)
@ -226,8 +226,8 @@ static av_always_inline void NAME(TXComplex *out, TXComplex *in, \
\
SMUL(t[4].re, t[0].re, tab[4], tab[6], t[2].re, t[0].re); \
SMUL(t[4].im, t[0].im, tab[4], tab[6], t[2].im, t[0].im); \
CMUL(t[5].re, t[1].re, tab[5], tab[7], t[3].re, t[1].re); \
CMUL(t[5].im, t[1].im, tab[5], tab[7], t[3].im, t[1].im); \
CMUL(t[5].re, t[1].re, -tab[5], -tab[7], t[3].re, t[1].re); \
CMUL(t[5].im, t[1].im, -tab[5], -tab[7], t[3].im, t[1].im); \
\
BF(z0[0].re, z0[3].re, t[0].re, t[1].re); \
BF(z0[0].im, z0[3].im, t[0].im, t[1].im); \