mirror of https://git.ffmpeg.org/ffmpeg.git
307 lines
13 KiB
C
307 lines
13 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#define TX_FLOAT
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#include "libavutil/tx_priv.h"
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#include "libavutil/attributes.h"
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#include "libavutil/x86/cpu.h"
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#include "config.h"
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TX_DECL_FN(fft2, sse3)
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TX_DECL_FN(fft4_fwd, sse2)
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TX_DECL_FN(fft4_inv, sse2)
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TX_DECL_FN(fft8, sse3)
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TX_DECL_FN(fft8_ns, sse3)
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TX_DECL_FN(fft8, avx)
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TX_DECL_FN(fft8_ns, avx)
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TX_DECL_FN(fft15, avx2)
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TX_DECL_FN(fft15_ns, avx2)
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TX_DECL_FN(fft16, avx)
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TX_DECL_FN(fft16_ns, avx)
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TX_DECL_FN(fft16, fma3)
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TX_DECL_FN(fft16_ns, fma3)
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TX_DECL_FN(fft32, avx)
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TX_DECL_FN(fft32_ns, avx)
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TX_DECL_FN(fft32, fma3)
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TX_DECL_FN(fft32_ns, fma3)
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TX_DECL_FN(fft_sr, avx)
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TX_DECL_FN(fft_sr_ns, avx)
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TX_DECL_FN(fft_sr, fma3)
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TX_DECL_FN(fft_sr_ns, fma3)
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TX_DECL_FN(fft_sr, avx2)
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TX_DECL_FN(fft_sr_ns, avx2)
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TX_DECL_FN(fft_pfa_15xM, avx2)
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TX_DECL_FN(fft_pfa_15xM_ns, avx2)
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TX_DECL_FN(mdct_inv, avx2)
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TX_DECL_FN(fft2_asm, sse3)
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TX_DECL_FN(fft4_fwd_asm, sse2)
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TX_DECL_FN(fft4_inv_asm, sse2)
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TX_DECL_FN(fft8_asm, sse3)
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TX_DECL_FN(fft8_asm, avx)
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TX_DECL_FN(fft16_asm, avx)
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TX_DECL_FN(fft16_asm, fma3)
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TX_DECL_FN(fft32_asm, avx)
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TX_DECL_FN(fft32_asm, fma3)
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TX_DECL_FN(fft_sr_asm, avx)
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TX_DECL_FN(fft_sr_asm, fma3)
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TX_DECL_FN(fft_sr_asm, avx2)
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TX_DECL_FN(fft_pfa_15xM_asm, avx2)
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#define DECL_INIT_FN(basis, interleave) \
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static av_cold int b ##basis## _i ##interleave(AVTXContext *s, \
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const FFTXCodelet *cd, \
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uint64_t flags, \
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FFTXCodeletOptions *opts, \
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int len, int inv, \
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const void *scale) \
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{ \
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const int inv_lookup = opts ? opts->invert_lookup : 1; \
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ff_tx_init_tabs_float(len); \
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if (cd->max_len == 2) \
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return ff_tx_gen_ptwo_revtab(s, inv_lookup); \
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else \
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return ff_tx_gen_split_radix_parity_revtab(s, len, inv, inv_lookup, \
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basis, interleave); \
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}
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DECL_INIT_FN(8, 0)
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DECL_INIT_FN(8, 2)
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static av_cold int factor_init(AVTXContext *s, const FFTXCodelet *cd,
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uint64_t flags, FFTXCodeletOptions *opts,
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int len, int inv, const void *scale)
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{
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TX_TAB(ff_tx_init_tabs)(len);
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s->map = av_malloc(len*sizeof(s->map));
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s->map[0] = 0; /* DC is always at the start */
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if (inv) /* Reversing the ACs flips the transform direction */
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for (int i = 1; i < len; i++)
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s->map[i] = len - i;
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else
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for (int i = 1; i < len; i++)
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s->map[i] = i;
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if (len == 15) {
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int cnt = 0, tmp[15];
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/* Our 15-point transform is actually a 5x3 PFA, so embed its input map. */
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memcpy(tmp, s->map, 15*sizeof(*tmp));
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for (int i = 0; i < 5; i++)
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for (int j = 0; j < 3; j++)
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s->map[i*3 + j] = tmp[(i*3 + j*5) % 15];
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/* Special 15-point assembly permutation */
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memcpy(tmp, s->map, 15*sizeof(*tmp));
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for (int i = 1; i < 15; i += 3) {
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s->map[cnt] = tmp[i];
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cnt++;
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}
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for (int i = 2; i < 15; i += 3) {
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s->map[cnt] = tmp[i];
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cnt++;
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}
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for (int i = 0; i < 15; i += 3) {
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s->map[cnt] = tmp[i];
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cnt++;
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}
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memmove(&s->map[7], &s->map[6], 4*sizeof(int));
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memmove(&s->map[3], &s->map[1], 4*sizeof(int));
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s->map[1] = tmp[2];
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s->map[2] = tmp[0];
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}
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return 0;
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}
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static av_cold int m_inv_init(AVTXContext *s, const FFTXCodelet *cd,
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uint64_t flags, FFTXCodeletOptions *opts,
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int len, int inv, const void *scale)
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{
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int ret;
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FFTXCodeletOptions sub_opts = { .invert_lookup = 1 };
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s->scale_d = *((SCALE_TYPE *)scale);
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s->scale_f = s->scale_d;
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flags &= ~FF_TX_OUT_OF_PLACE; /* We want the subtransform to be */
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flags |= AV_TX_INPLACE; /* in-place */
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flags |= FF_TX_PRESHUFFLE; /* This function handles the permute step */
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flags |= FF_TX_ASM_CALL; /* We want an assembly function, not C */
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if ((ret = ff_tx_init_subtx(s, TX_TYPE(FFT), flags, &sub_opts, len >> 1,
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inv, scale)))
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return ret;
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s->map = av_malloc(len*sizeof(*s->map));
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if (!s->map)
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return AVERROR(ENOMEM);
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memcpy(s->map, s->sub->map, (len >> 1)*sizeof(*s->map));
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/* Invert lookup table for unstrided path */
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for (int i = 0; i < (len >> 1); i++)
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s->map[(len >> 1) + s->map[i]] = i;
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if ((ret = ff_tx_mdct_gen_exp_float(s, s->map)))
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return ret;
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return 0;
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}
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static av_cold int fft_pfa_init(AVTXContext *s,
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const FFTXCodelet *cd,
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uint64_t flags,
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FFTXCodeletOptions *opts,
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int len, int inv,
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const void *scale)
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{
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int ret;
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int sub_len = len / cd->factors[0];
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FFTXCodeletOptions sub_opts = { .invert_lookup = 0 };
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flags &= ~FF_TX_OUT_OF_PLACE; /* We want the subtransform to be */
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flags |= AV_TX_INPLACE; /* in-place */
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flags |= FF_TX_PRESHUFFLE; /* This function handles the permute step */
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flags |= FF_TX_ASM_CALL; /* We want an assembly function, not C */
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if ((ret = ff_tx_init_subtx(s, TX_TYPE(FFT), flags, &sub_opts,
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sub_len, inv, scale)))
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return ret;
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if ((ret = ff_tx_gen_compound_mapping(s, cd->factors[0], sub_len)))
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return ret;
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if (cd->factors[0] == 15) {
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for (int k = 0; k < s->sub[0].len; k++) {
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int cnt = 0;
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int tmp[15];
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memcpy(tmp, &s->map[k*15], 15*sizeof(*tmp));
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for (int i = 1; i < 15; i += 3) {
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s->map[k*15 + cnt] = tmp[i];
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cnt++;
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}
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for (int i = 2; i < 15; i += 3) {
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s->map[k*15 + cnt] = tmp[i];
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cnt++;
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}
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for (int i = 0; i < 15; i += 3) {
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s->map[k*15 + cnt] = tmp[i];
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cnt++;
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}
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memmove(&s->map[k*15 + 7], &s->map[k*15 + 6], 4*sizeof(int));
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memmove(&s->map[k*15 + 3], &s->map[k*15 + 1], 4*sizeof(int));
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s->map[k*15 + 1] = tmp[2];
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s->map[k*15 + 2] = tmp[0];
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}
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}
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if (!(s->tmp = av_malloc(len*sizeof(*s->tmp))))
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return AVERROR(ENOMEM);
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TX_TAB(ff_tx_init_tabs)(len / sub_len);
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return 0;
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}
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const FFTXCodelet * const ff_tx_codelet_list_float_x86[] = {
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TX_DEF(fft2, FFT, 2, 2, 2, 0, 128, NULL, sse3, SSE3, AV_TX_INPLACE, 0),
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TX_DEF(fft2_asm, FFT, 2, 2, 2, 0, 192, b8_i0, sse3, SSE3,
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AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, 0),
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TX_DEF(fft2, FFT, 2, 2, 2, 0, 192, b8_i0, sse3, SSE3, AV_TX_INPLACE | FF_TX_PRESHUFFLE, 0),
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TX_DEF(fft4_fwd, FFT, 4, 4, 2, 0, 128, NULL, sse2, SSE2, AV_TX_INPLACE | FF_TX_FORWARD_ONLY, 0),
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TX_DEF(fft4_fwd_asm, FFT, 4, 4, 2, 0, 192, b8_i0, sse2, SSE2,
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AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, 0),
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TX_DEF(fft4_inv_asm, FFT, 4, 4, 2, 0, 128, NULL, sse2, SSE2,
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AV_TX_INPLACE | FF_TX_INVERSE_ONLY | FF_TX_ASM_CALL, 0),
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TX_DEF(fft4_fwd, FFT, 4, 4, 2, 0, 192, b8_i0, sse2, SSE2, AV_TX_INPLACE | FF_TX_PRESHUFFLE, 0),
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TX_DEF(fft4_inv, FFT, 4, 4, 2, 0, 128, NULL, sse2, SSE2, AV_TX_INPLACE | FF_TX_INVERSE_ONLY, 0),
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TX_DEF(fft8, FFT, 8, 8, 2, 0, 128, b8_i0, sse3, SSE3, AV_TX_INPLACE, 0),
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TX_DEF(fft8_asm, FFT, 8, 8, 2, 0, 192, b8_i0, sse3, SSE3,
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AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, 0),
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TX_DEF(fft8_ns, FFT, 8, 8, 2, 0, 192, b8_i0, sse3, SSE3, AV_TX_INPLACE | FF_TX_PRESHUFFLE, 0),
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TX_DEF(fft8, FFT, 8, 8, 2, 0, 256, b8_i0, avx, AVX, AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft8_asm, FFT, 8, 8, 2, 0, 320, b8_i0, avx, AVX,
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AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft8_ns, FFT, 8, 8, 2, 0, 320, b8_i0, avx, AVX, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
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AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft16, FFT, 16, 16, 2, 0, 256, b8_i2, avx, AVX, AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft16_asm, FFT, 16, 16, 2, 0, 320, b8_i2, avx, AVX,
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AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft16_ns, FFT, 16, 16, 2, 0, 320, b8_i2, avx, AVX, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
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AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft16, FFT, 16, 16, 2, 0, 288, b8_i2, fma3, FMA3, AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft16_asm, FFT, 16, 16, 2, 0, 352, b8_i2, fma3, FMA3,
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AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft16_ns, FFT, 16, 16, 2, 0, 352, b8_i2, fma3, FMA3, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
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AV_CPU_FLAG_AVXSLOW),
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#if ARCH_X86_64
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TX_DEF(fft32, FFT, 32, 32, 2, 0, 256, b8_i2, avx, AVX, AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft32_asm, FFT, 32, 32, 2, 0, 320, b8_i2, avx, AVX,
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AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft32_ns, FFT, 32, 32, 2, 0, 320, b8_i2, avx, AVX, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
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AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft32, FFT, 32, 32, 2, 0, 288, b8_i2, fma3, FMA3, AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft32_asm, FFT, 32, 32, 2, 0, 352, b8_i2, fma3, FMA3,
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AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft32_ns, FFT, 32, 32, 2, 0, 352, b8_i2, fma3, FMA3, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
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AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft_sr, FFT, 64, 131072, 2, 0, 256, b8_i2, avx, AVX, 0, AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft_sr_asm, FFT, 64, 131072, 2, 0, 320, b8_i2, avx, AVX,
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AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft_sr_ns, FFT, 64, 131072, 2, 0, 320, b8_i2, avx, AVX, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
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AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft_sr, FFT, 64, 131072, 2, 0, 288, b8_i2, fma3, FMA3, 0, AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft_sr_asm, FFT, 64, 131072, 2, 0, 352, b8_i2, fma3, FMA3,
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AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft_sr_ns, FFT, 64, 131072, 2, 0, 352, b8_i2, fma3, FMA3, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
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AV_CPU_FLAG_AVXSLOW),
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#if HAVE_AVX2_EXTERNAL
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TX_DEF(fft15, FFT, 15, 15, 15, 0, 320, factor_init, avx2, AVX2,
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AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft15_ns, FFT, 15, 15, 15, 0, 384, factor_init, avx2, AVX2,
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AV_TX_INPLACE | FF_TX_PRESHUFFLE, AV_CPU_FLAG_AVXSLOW),
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TX_DEF(fft_sr, FFT, 64, 131072, 2, 0, 320, b8_i2, avx2, AVX2, 0,
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AV_CPU_FLAG_AVXSLOW | AV_CPU_FLAG_SLOW_GATHER),
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TX_DEF(fft_sr_asm, FFT, 64, 131072, 2, 0, 384, b8_i2, avx2, AVX2,
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AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW | AV_CPU_FLAG_SLOW_GATHER),
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TX_DEF(fft_sr_ns, FFT, 64, 131072, 2, 0, 384, b8_i2, avx2, AVX2, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
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AV_CPU_FLAG_AVXSLOW | AV_CPU_FLAG_SLOW_GATHER),
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TX_DEF(fft_pfa_15xM, FFT, 60, TX_LEN_UNLIMITED, 15, 2, 320, fft_pfa_init, avx2, AVX2,
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AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW | AV_CPU_FLAG_SLOW_GATHER),
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TX_DEF(fft_pfa_15xM_asm, FFT, 60, TX_LEN_UNLIMITED, 15, 2, 384, fft_pfa_init, avx2, AVX2,
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AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW | AV_CPU_FLAG_SLOW_GATHER),
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TX_DEF(fft_pfa_15xM_ns, FFT, 60, TX_LEN_UNLIMITED, 15, 2, 384, fft_pfa_init, avx2, AVX2,
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AV_TX_INPLACE | FF_TX_PRESHUFFLE, AV_CPU_FLAG_AVXSLOW | AV_CPU_FLAG_SLOW_GATHER),
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TX_DEF(mdct_inv, MDCT, 16, TX_LEN_UNLIMITED, 2, TX_FACTOR_ANY, 384, m_inv_init, avx2, AVX2,
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FF_TX_INVERSE_ONLY, AV_CPU_FLAG_AVXSLOW | AV_CPU_FLAG_SLOW_GATHER),
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#endif
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#endif
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NULL,
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};
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