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| author | Lynne <dev@lynne.ee> | 2022-09-10 02:31:43 +0200 |
|---|---|---|
| committer | Lynne <dev@lynne.ee> | 2022-09-10 02:37:17 +0200 |
| commit | c92edd969aaf8b12434ff4bd731aa4bc5548fbbf (patch) | |
| tree | 3218a03bfe9a378dcf604eb028dc5f6814215a9a | |
| parent | 51172223fd1a5b71b46fc0d398f4fdc9ed081b83 (diff) | |
| download | ffmpeg-c92edd969aaf8b12434ff4bd731aa4bc5548fbbf.tar.gz | |
lavu/tx: rotate 3 & 15-point exptabs
This just inverts their signs. Simplifies SIMD.
| -rw-r--r-- | libavutil/tx_template.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/libavutil/tx_template.c b/libavutil/tx_template.c index 1d4c4d294b..0c7ddd26f6 100644 --- a/libavutil/tx_template.c +++ b/libavutil/tx_template.c @@ -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); \ |