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FFmpeg/libavutil/x86/tx_float_init.c

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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/mem.h"
#include "libavutil/x86/cpu.h"
#include "config.h"
TX_DECL_FN(fft2, sse3)
TX_DECL_FN(fft4_fwd, sse2)
TX_DECL_FN(fft4_inv, sse2)
TX_DECL_FN(fft8, sse3)
TX_DECL_FN(fft8_ns, sse3)
TX_DECL_FN(fft8, avx)
TX_DECL_FN(fft8_ns, avx)
TX_DECL_FN(fft15, avx2)
TX_DECL_FN(fft15_ns, avx2)
TX_DECL_FN(fft16, avx)
TX_DECL_FN(fft16_ns, avx)
TX_DECL_FN(fft16, fma3)
TX_DECL_FN(fft16_ns, fma3)
TX_DECL_FN(fft32, avx)
TX_DECL_FN(fft32_ns, avx)
TX_DECL_FN(fft32, fma3)
TX_DECL_FN(fft32_ns, fma3)
TX_DECL_FN(fft_sr, avx)
TX_DECL_FN(fft_sr_ns, avx)
TX_DECL_FN(fft_sr, fma3)
TX_DECL_FN(fft_sr_ns, fma3)
TX_DECL_FN(fft_sr, avx2)
TX_DECL_FN(fft_sr_ns, avx2)
TX_DECL_FN(fft_pfa_15xM, avx2)
TX_DECL_FN(fft_pfa_15xM_ns, avx2)
TX_DECL_FN(mdct_inv, avx2)
TX_DECL_FN(fft2_asm, sse3)
TX_DECL_FN(fft4_fwd_asm, sse2)
TX_DECL_FN(fft4_inv_asm, sse2)
TX_DECL_FN(fft8_asm, sse3)
TX_DECL_FN(fft8_asm, avx)
TX_DECL_FN(fft16_asm, avx)
TX_DECL_FN(fft16_asm, fma3)
TX_DECL_FN(fft32_asm, avx)
TX_DECL_FN(fft32_asm, fma3)
TX_DECL_FN(fft_sr_asm, avx)
TX_DECL_FN(fft_sr_asm, fma3)
TX_DECL_FN(fft_sr_asm, avx2)
TX_DECL_FN(fft_pfa_15xM_asm, avx2)
#define DECL_INIT_FN(basis, interleave) \
static av_cold int b ##basis## _i ##interleave(AVTXContext *s, \
const FFTXCodelet *cd, \
uint64_t flags, \
FFTXCodeletOptions *opts, \
int len, int inv, \
const void *scale) \
{ \
ff_tx_init_tabs_float(len); \
if (cd->max_len == 2) \
return ff_tx_gen_ptwo_revtab(s, opts); \
else \
return ff_tx_gen_split_radix_parity_revtab(s, len, inv, opts, \
basis, interleave); \
}
DECL_INIT_FN(8, 0)
DECL_INIT_FN(8, 2)
static av_cold int factor_init(AVTXContext *s, const FFTXCodelet *cd,
uint64_t flags, FFTXCodeletOptions *opts,
int len, int inv, const void *scale)
{
int ret;
/* The transformations below are performed in the gather domain,
* so override the option and let the infrastructure convert the map
* to SCATTER if needed. */
FFTXCodeletOptions sub_opts = { .map_dir = FF_TX_MAP_GATHER };
TX_TAB(ff_tx_init_tabs)(len);
if (len == 15)
ret = ff_tx_gen_pfa_input_map(s, &sub_opts, 3, 5);
else
ret = ff_tx_gen_default_map(s, &sub_opts);
if (ret < 0)
return ret;
if (len == 15) {
int cnt = 0, tmp[15];
/* Special permutation to simplify loads in the pre-permuted version */
memcpy(tmp, s->map, 15*sizeof(*tmp));
for (int i = 1; i < 15; i += 3) {
s->map[cnt] = tmp[i];
cnt++;
}
for (int i = 2; i < 15; i += 3) {
s->map[cnt] = tmp[i];
cnt++;
}
for (int i = 0; i < 15; i += 3) {
s->map[cnt] = tmp[i];
cnt++;
}
memmove(&s->map[7], &s->map[6], 4*sizeof(int));
memmove(&s->map[3], &s->map[1], 4*sizeof(int));
s->map[1] = tmp[2];
s->map[2] = tmp[0];
}
return 0;
}
static av_cold int m_inv_init(AVTXContext *s, const FFTXCodelet *cd,
uint64_t flags, FFTXCodeletOptions *opts,
int len, int inv, const void *scale)
{
int ret;
FFTXCodeletOptions sub_opts = { .map_dir = FF_TX_MAP_GATHER };
s->scale_d = *((SCALE_TYPE *)scale);
s->scale_f = s->scale_d;
flags &= ~FF_TX_OUT_OF_PLACE; /* We want the subtransform to be */
flags |= AV_TX_INPLACE; /* in-place */
flags |= FF_TX_PRESHUFFLE; /* This function handles the permute step */
flags |= FF_TX_ASM_CALL; /* We want an assembly function, not C */
if ((ret = ff_tx_init_subtx(s, TX_TYPE(FFT), flags, &sub_opts, len >> 1,
inv, scale)))
return ret;
s->map = av_malloc(len*sizeof(*s->map));
if (!s->map)
return AVERROR(ENOMEM);
memcpy(s->map, s->sub->map, (len >> 1)*sizeof(*s->map));
/* Invert lookup table for unstrided path */
for (int i = 0; i < (len >> 1); i++)
s->map[(len >> 1) + s->map[i]] = i;
if ((ret = ff_tx_mdct_gen_exp_float(s, s->map)))
return ret;
return 0;
}
static av_cold int fft_pfa_init(AVTXContext *s,
const FFTXCodelet *cd,
uint64_t flags,
FFTXCodeletOptions *opts,
int len, int inv,
const void *scale)
{
int ret;
int sub_len = len / cd->factors[0];
FFTXCodeletOptions sub_opts = { .map_dir = FF_TX_MAP_SCATTER };
flags &= ~FF_TX_OUT_OF_PLACE; /* We want the subtransform to be */
flags |= AV_TX_INPLACE; /* in-place */
flags |= FF_TX_PRESHUFFLE; /* This function handles the permute step */
flags |= FF_TX_ASM_CALL; /* We want an assembly function, not C */
if ((ret = ff_tx_init_subtx(s, TX_TYPE(FFT), flags, &sub_opts,
sub_len, inv, scale)))
return ret;
if ((ret = ff_tx_gen_compound_mapping(s, opts, s->inv, cd->factors[0], sub_len)))
return ret;
if (cd->factors[0] == 15) {
int tmp[15];
/* Our 15-point transform is also a compound one, so embed its input map */
TX_EMBED_INPUT_PFA_MAP(s->map, len, 3, 5);
/* Special permutation to simplify loads in the pre-permuted version */
for (int k = 0; k < s->sub[0].len; k++) {
int cnt = 0;
memcpy(tmp, &s->map[k*15], 15*sizeof(*tmp));
for (int i = 1; i < 15; i += 3) {
s->map[k*15 + cnt] = tmp[i];
cnt++;
}
for (int i = 2; i < 15; i += 3) {
s->map[k*15 + cnt] = tmp[i];
cnt++;
}
for (int i = 0; i < 15; i += 3) {
s->map[k*15 + cnt] = tmp[i];
cnt++;
}
memmove(&s->map[k*15 + 7], &s->map[k*15 + 6], 4*sizeof(int));
memmove(&s->map[k*15 + 3], &s->map[k*15 + 1], 4*sizeof(int));
s->map[k*15 + 1] = tmp[2];
s->map[k*15 + 2] = tmp[0];
}
}
if (!(s->tmp = av_malloc(len*sizeof(*s->tmp))))
return AVERROR(ENOMEM);
TX_TAB(ff_tx_init_tabs)(len / sub_len);
return 0;
}
const FFTXCodelet * const ff_tx_codelet_list_float_x86[] = {
TX_DEF(fft2, FFT, 2, 2, 2, 0, 128, NULL, sse3, SSE3, AV_TX_INPLACE, 0),
TX_DEF(fft2_asm, FFT, 2, 2, 2, 0, 192, b8_i0, sse3, SSE3,
AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, 0),
TX_DEF(fft2, FFT, 2, 2, 2, 0, 192, b8_i0, sse3, SSE3, AV_TX_INPLACE | FF_TX_PRESHUFFLE, 0),
TX_DEF(fft4_fwd, FFT, 4, 4, 2, 0, 128, NULL, sse2, SSE2, AV_TX_INPLACE | FF_TX_FORWARD_ONLY, 0),
TX_DEF(fft4_fwd_asm, FFT, 4, 4, 2, 0, 192, b8_i0, sse2, SSE2,
AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, 0),
TX_DEF(fft4_inv_asm, FFT, 4, 4, 2, 0, 128, NULL, sse2, SSE2,
AV_TX_INPLACE | FF_TX_INVERSE_ONLY | FF_TX_ASM_CALL, 0),
TX_DEF(fft4_fwd, FFT, 4, 4, 2, 0, 192, b8_i0, sse2, SSE2, AV_TX_INPLACE | FF_TX_PRESHUFFLE, 0),
TX_DEF(fft4_inv, FFT, 4, 4, 2, 0, 128, NULL, sse2, SSE2, AV_TX_INPLACE | FF_TX_INVERSE_ONLY, 0),
TX_DEF(fft8, FFT, 8, 8, 2, 0, 128, b8_i0, sse3, SSE3, AV_TX_INPLACE, 0),
TX_DEF(fft8_asm, FFT, 8, 8, 2, 0, 192, b8_i0, sse3, SSE3,
AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, 0),
TX_DEF(fft8_ns, FFT, 8, 8, 2, 0, 192, b8_i0, sse3, SSE3, AV_TX_INPLACE | FF_TX_PRESHUFFLE, 0),
TX_DEF(fft8, FFT, 8, 8, 2, 0, 256, b8_i0, avx, AVX, AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft8_asm, FFT, 8, 8, 2, 0, 320, b8_i0, avx, AVX,
AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft8_ns, FFT, 8, 8, 2, 0, 320, b8_i0, avx, AVX, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft16, FFT, 16, 16, 2, 0, 256, b8_i2, avx, AVX, AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft16_asm, FFT, 16, 16, 2, 0, 320, b8_i2, avx, AVX,
AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft16_ns, FFT, 16, 16, 2, 0, 320, b8_i2, avx, AVX, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft16, FFT, 16, 16, 2, 0, 288, b8_i2, fma3, FMA3, AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft16_asm, FFT, 16, 16, 2, 0, 352, b8_i2, fma3, FMA3,
AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft16_ns, FFT, 16, 16, 2, 0, 352, b8_i2, fma3, FMA3, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
AV_CPU_FLAG_AVXSLOW),
#if ARCH_X86_64
TX_DEF(fft32, FFT, 32, 32, 2, 0, 256, b8_i2, avx, AVX, AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft32_asm, FFT, 32, 32, 2, 0, 320, b8_i2, avx, AVX,
AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft32_ns, FFT, 32, 32, 2, 0, 320, b8_i2, avx, AVX, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft32, FFT, 32, 32, 2, 0, 288, b8_i2, fma3, FMA3, AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft32_asm, FFT, 32, 32, 2, 0, 352, b8_i2, fma3, FMA3,
AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft32_ns, FFT, 32, 32, 2, 0, 352, b8_i2, fma3, FMA3, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft_sr, FFT, 64, 2097152, 2, 0, 256, b8_i2, avx, AVX, 0, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft_sr_asm, FFT, 64, 2097152, 2, 0, 320, b8_i2, avx, AVX,
AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft_sr_ns, FFT, 64, 2097152, 2, 0, 320, b8_i2, avx, AVX, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft_sr, FFT, 64, 2097152, 2, 0, 288, b8_i2, fma3, FMA3, 0, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft_sr_asm, FFT, 64, 2097152, 2, 0, 352, b8_i2, fma3, FMA3,
AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft_sr_ns, FFT, 64, 2097152, 2, 0, 352, b8_i2, fma3, FMA3, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
AV_CPU_FLAG_AVXSLOW),
#if HAVE_AVX2_EXTERNAL
TX_DEF(fft15, FFT, 15, 15, 15, 0, 320, factor_init, avx2, AVX2,
AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft15_ns, FFT, 15, 15, 15, 0, 384, factor_init, avx2, AVX2,
AV_TX_INPLACE | FF_TX_PRESHUFFLE, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft_sr, FFT, 64, 2097152, 2, 0, 320, b8_i2, avx2, AVX2, 0,
AV_CPU_FLAG_AVXSLOW | AV_CPU_FLAG_SLOW_GATHER),
TX_DEF(fft_sr_asm, FFT, 64, 2097152, 2, 0, 384, b8_i2, avx2, AVX2,
AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW | AV_CPU_FLAG_SLOW_GATHER),
TX_DEF(fft_sr_ns, FFT, 64, 2097152, 2, 0, 384, b8_i2, avx2, AVX2, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
AV_CPU_FLAG_AVXSLOW | AV_CPU_FLAG_SLOW_GATHER),
TX_DEF(fft_pfa_15xM, FFT, 60, TX_LEN_UNLIMITED, 15, 2, 320, fft_pfa_init, avx2, AVX2,
AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW | AV_CPU_FLAG_SLOW_GATHER),
TX_DEF(fft_pfa_15xM_asm, FFT, 60, TX_LEN_UNLIMITED, 15, 2, 384, fft_pfa_init, avx2, AVX2,
AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW | AV_CPU_FLAG_SLOW_GATHER),
TX_DEF(fft_pfa_15xM_ns, FFT, 60, TX_LEN_UNLIMITED, 15, 2, 384, fft_pfa_init, avx2, AVX2,
AV_TX_INPLACE | FF_TX_PRESHUFFLE, AV_CPU_FLAG_AVXSLOW | AV_CPU_FLAG_SLOW_GATHER),
TX_DEF(mdct_inv, MDCT, 16, TX_LEN_UNLIMITED, 2, TX_FACTOR_ANY, 384, m_inv_init, avx2, AVX2,
FF_TX_INVERSE_ONLY, AV_CPU_FLAG_AVXSLOW | AV_CPU_FLAG_SLOW_GATHER),
#endif
#endif
NULL,
};