mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
ace42cf581
~4x faster than the C version. The shuffles in the 15pt dim1 are seriously expensive. Not happy with it, but I'm contempt. Can be easily converted to pure AVX by removing all vpermpd/vpermps instructions.
129 lines
6.4 KiB
C
129 lines
6.4 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with FFmpeg; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "libavutil/mem_internal.h"
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#include "libavutil/tx.h"
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#include "libavutil/error.h"
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#include "checkasm.h"
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#include <stdlib.h>
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#define EPS 0.0005
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#define SCALE_NOOP(x) (x)
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#define SCALE_INT20(x) (av_clip64(lrintf((x) * 2147483648.0), INT32_MIN, INT32_MAX) >> 12)
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#define randomize_complex(BUF, LEN, TYPE, SCALE) \
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do { \
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TYPE *buf = (TYPE *)BUF; \
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for (int i = 0; i < LEN; i++) { \
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double fre = (double)rnd() / UINT_MAX; \
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double fim = (double)rnd() / UINT_MAX; \
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buf[i] = (TYPE){ SCALE(fre), SCALE(fim) }; \
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} \
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} while (0)
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static const int check_lens[] = {
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2, 4, 8, 16, 32, 64, 120, 960, 1024, 1920, 16384,
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};
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static AVTXContext *tx_refs[AV_TX_NB][2 /* Direction */][FF_ARRAY_ELEMS(check_lens)] = { 0 };
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static int init = 0;
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static void free_tx_refs(void)
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{
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for (int i = 0; i < FF_ARRAY_ELEMS(tx_refs); i++)
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for (int j = 0; j < FF_ARRAY_ELEMS(*tx_refs); j++)
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for (int k = 0; k < FF_ARRAY_ELEMS(**tx_refs); k++)
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av_tx_uninit(&tx_refs[i][j][k]);
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}
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#define CHECK_TEMPLATE(PREFIX, TYPE, DIR, DATA_TYPE, SCALE_TYPE, LENGTHS, CHECK_EXPRESSION) \
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do { \
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int err; \
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AVTXContext *tx; \
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av_tx_fn fn; \
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int num_checks = 0; \
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int last_check = 0; \
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\
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for (int i = 0; i < FF_ARRAY_ELEMS(LENGTHS); i++) { \
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int len = LENGTHS[i]; \
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const SCALE_TYPE scale = 1.0 / len; \
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\
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if ((err = av_tx_init(&tx, &fn, TYPE, DIR, len, &scale, 0x0)) < 0) { \
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fprintf(stderr, "av_tx: %s\n", av_err2str(err)); \
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return; \
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} \
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\
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if (check_func(fn, PREFIX "_%i", len)) { \
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AVTXContext *tx_ref = tx_refs[TYPE][DIR][i]; \
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if (!tx_ref) \
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tx_ref = tx; \
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num_checks++; \
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last_check = len; \
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call_ref(tx_ref, out_ref, in, sizeof(DATA_TYPE)); \
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call_new(tx, out_new, in, sizeof(DATA_TYPE)); \
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if (CHECK_EXPRESSION) { \
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fail(); \
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av_tx_uninit(&tx); \
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break; \
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} \
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bench_new(tx, out_new, in, sizeof(DATA_TYPE)); \
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av_tx_uninit(&tx_refs[TYPE][DIR][i]); \
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tx_refs[TYPE][DIR][i] = tx; \
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} else { \
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av_tx_uninit(&tx); \
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} \
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} \
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\
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if (num_checks == 1) \
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report(PREFIX "_%i", last_check); \
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else if (num_checks) \
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report(PREFIX); \
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} while (0)
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void checkasm_check_av_tx(void)
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{
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declare_func(void, AVTXContext *tx, void *out, void *in, ptrdiff_t stride);
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void *in = av_malloc(16384*2*8);
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void *out_ref = av_malloc(16384*2*8);
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void *out_new = av_malloc(16384*2*8);
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randomize_complex(in, 16384, AVComplexFloat, SCALE_NOOP);
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CHECK_TEMPLATE("float_fft", AV_TX_FLOAT_FFT, 0, AVComplexFloat, float, check_lens,
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!float_near_abs_eps_array(out_ref, out_new, EPS, len*2));
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CHECK_TEMPLATE("float_imdct", AV_TX_FLOAT_MDCT, 1, float, float, check_lens,
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!float_near_abs_eps_array(out_ref, out_new, EPS, len));
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randomize_complex(in, 16384, AVComplexDouble, SCALE_NOOP);
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CHECK_TEMPLATE("double_fft", AV_TX_DOUBLE_FFT, 0, AVComplexDouble, double, check_lens,
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!double_near_abs_eps_array(out_ref, out_new, EPS, len*2));
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av_free(in);
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av_free(out_ref);
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av_free(out_new);
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if (!init) {
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init = 1;
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atexit(free_tx_refs);
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}
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}
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