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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define TX_FLOAT
#include "libavutil/tx_priv.h"
#include "libavutil/attributes.h"
#include "libavutil/x86/cpu.h"
void ff_fft2_float_sse3 (AVTXContext *s, void *out, void *in, ptrdiff_t stride);
void ff_fft4_inv_float_sse2 (AVTXContext *s, void *out, void *in, ptrdiff_t stride);
void ff_fft4_fwd_float_sse2 (AVTXContext *s, void *out, void *in, ptrdiff_t stride);
void ff_fft8_float_sse3 (AVTXContext *s, void *out, void *in, ptrdiff_t stride);
void ff_fft8_float_avx (AVTXContext *s, void *out, void *in, ptrdiff_t stride);
void ff_fft16_float_avx (AVTXContext *s, void *out, void *in, ptrdiff_t stride);
void ff_fft16_float_fma3 (AVTXContext *s, void *out, void *in, ptrdiff_t stride);
void ff_fft32_float_avx (AVTXContext *s, void *out, void *in, ptrdiff_t stride);
void ff_fft32_float_fma3 (AVTXContext *s, void *out, void *in, ptrdiff_t stride);
void ff_split_radix_fft_float_avx (AVTXContext *s, void *out, void *in, ptrdiff_t stride);
void ff_split_radix_fft_float_fma3(AVTXContext *s, void *out, void *in, ptrdiff_t stride);
av_cold void ff_tx_init_float_x86(AVTXContext *s, av_tx_fn *tx)
{
int cpu_flags = av_get_cpu_flags();
int gen_revtab = 0, basis, revtab_interleave;
if (s->flags & AV_TX_UNALIGNED)
return;
if (ff_tx_type_is_mdct(s->type))
return;
#define TXFN(fn, gentab, sr_basis, interleave) \
do { \
*tx = fn; \
gen_revtab = gentab; \
basis = sr_basis; \
revtab_interleave = interleave; \
} while (0)
if (s->n == 1) {
if (EXTERNAL_SSE2(cpu_flags)) {
if (s->m == 4 && s->inv)
TXFN(ff_fft4_inv_float_sse2, 0, 0, 0);
else if (s->m == 4)
TXFN(ff_fft4_fwd_float_sse2, 0, 0, 0);
}
if (EXTERNAL_SSE3(cpu_flags)) {
if (s->m == 2)
TXFN(ff_fft2_float_sse3, 0, 0, 0);
else if (s->m == 8)
TXFN(ff_fft8_float_sse3, 1, 8, 0);
}
if (EXTERNAL_AVX_FAST(cpu_flags)) {
if (s->m == 8)
TXFN(ff_fft8_float_avx, 1, 8, 0);
else if (s->m == 16)
TXFN(ff_fft16_float_avx, 1, 8, 2);
#if ARCH_X86_64
else if (s->m == 32)
TXFN(ff_fft32_float_avx, 1, 8, 2);
else if (s->m >= 64 && s->m <= 131072 && !(s->flags & AV_TX_INPLACE))
TXFN(ff_split_radix_fft_float_avx, 1, 8, 2);
#endif
}
if (EXTERNAL_FMA3_FAST(cpu_flags)) {
if (s->m == 16)
TXFN(ff_fft16_float_fma3, 1, 8, 2);
#if ARCH_X86_64
else if (s->m == 32)
TXFN(ff_fft32_float_fma3, 1, 8, 2);
else if (s->m >= 64 && s->m <= 131072 && !(s->flags & AV_TX_INPLACE))
TXFN(ff_split_radix_fft_float_fma3, 1, 8, 2);
#endif
}
}
if (gen_revtab)
ff_tx_gen_split_radix_parity_revtab(s->revtab, s->m, s->inv, basis,
revtab_interleave);
#undef TXFN
}
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