mirror of
https://git.ffmpeg.org/ffmpeg.git
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127 lines
3.9 KiB
C
127 lines
3.9 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/avassert.h"
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#include "libavutil/mem_internal.h"
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#include "libavcodec/lpc.h"
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#include "checkasm.h"
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#define randomize_int32(buf, len) \
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do { \
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for (int i = 0; i < len; i++) { \
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int32_t f = ((int)(UINT32_MAX >> 17)) - ((int)(rnd() >> 16)); \
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buf[i] = f; \
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} \
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} while (0)
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#define EPS 0.005
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static void test_window(int len)
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{
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LOCAL_ALIGNED(16, int32_t, src, [5000]);
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LOCAL_ALIGNED(16, double, dst0, [5000]);
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LOCAL_ALIGNED(16, double, dst1, [5000]);
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declare_func(void, const int32_t *in, ptrdiff_t len, double *out);
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randomize_int32(src, len);
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call_ref(src, len, dst0);
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call_new(src, len, dst1);
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for (int i = 0; i < len; i++) {
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if (!double_near_abs_eps(dst0[i], dst1[i], EPS)) {
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fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
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i, dst0[i], dst1[i], dst0[i] - dst1[i]);
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fail();
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break;
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}
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}
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bench_new(src, 4608 + (len & 1), dst1);
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}
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static void test_compute_autocorr(ptrdiff_t len, int lag)
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{
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const double eps = EPS * (double)len;
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LOCAL_ALIGNED(32, double, src, [5000 + 2 + MAX_LPC_ORDER]);
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LOCAL_ALIGNED(16, double, dst0, [MAX_LPC_ORDER + 1]);
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LOCAL_ALIGNED(16, double, dst1, [MAX_LPC_ORDER + 1]);
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declare_func(void, const double *in, ptrdiff_t len, int lag, double *out);
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av_assert0(lag >= 0 && lag <= MAX_LPC_ORDER);
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for (int i = 0; i < MAX_LPC_ORDER; i++)
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src[i] = 0.;
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src += MAX_LPC_ORDER;
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for (int i = 0; i < 5000 + 2; i++) {
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src[i] = (double)rnd() / (double)UINT_MAX;
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}
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call_ref(src, len, lag, dst0);
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call_new(src, len, lag, dst1);
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for (size_t i = 0; i <= lag; i++) {
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if (!double_near_abs_eps(dst0[i], dst1[i], eps)) {
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fprintf(stderr, "%zu: %- .12f - %- .12f = % .12g\n",
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i, dst0[i], dst1[i], dst0[i] - dst1[i]);
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fail();
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break;
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}
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}
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bench_new(src, 4608 + (len & 1), lag, dst1);
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}
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void checkasm_check_lpc(void)
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{
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LPCContext ctx;
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int len = 2000 + rnd() % 3000;
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static const int lags[] = { 8, 12, };
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ff_lpc_init(&ctx, 32, 16, FF_LPC_TYPE_DEFAULT);
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if (check_func(ctx.lpc_apply_welch_window, "apply_welch_window_even")) {
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test_window(len & ~1);
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}
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report("apply_welch_window_even");
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if (check_func(ctx.lpc_apply_welch_window, "apply_welch_window_odd")) {
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test_window(len | 1);
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}
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report("apply_welch_window_odd");
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ff_lpc_end(&ctx);
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for (size_t i = 0; i < FF_ARRAY_ELEMS(lags); i++) {
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ff_lpc_init(&ctx, len, lags[i], FF_LPC_TYPE_DEFAULT);
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if (check_func(ctx.lpc_compute_autocorr, "autocorr_%d_even", lags[i]))
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test_compute_autocorr(len & ~1, lags[i]);
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#if !ARCH_X86
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if (check_func(ctx.lpc_compute_autocorr, "autocorr_%d_odd", lags[i]))
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test_compute_autocorr(len | 1, lags[i]);
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#endif
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ff_lpc_end(&ctx);
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}
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report("compute_autocorr");
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}
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