Le lauantaina 25. toukokuuta 2024, 14.58.53 EEST Rémi Denis-Courmont a écrit :
> --
> Change since previous version:
> - Disable test on x86, since the x86 optimisation fails
> with a suspiciously large and regular error with 10-20% probability.
> ---
> tests/checkasm/lpc.c | 54 ++++++++++++++++++++++++++++++++++++++++++--
> 1 file changed, 52 insertions(+), 2 deletions(-)
>
> diff --git a/tests/checkasm/lpc.c b/tests/checkasm/lpc.c
> index 592e34c03d..38810325ac 100644
> --- a/tests/checkasm/lpc.c
> +++ b/tests/checkasm/lpc.c
> @@ -16,6 +16,7 @@
> * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> */
>
> +#include "libavutil/avassert.h"
> #include "libavutil/mem_internal.h"
>
> #include "libavcodec/lpc.h"
> @@ -57,10 +58,50 @@ static void test_window(int len)
> bench_new(src, len, dst1);
> }
>
> +#if !ARCH_X86
> +static void test_compute_autocorr(ptrdiff_t len, int lag)
> +{
> + LOCAL_ALIGNED(32, double, src, [5000 + 2 + MAX_LPC_ORDER]);
> + LOCAL_ALIGNED(16, double, dst0, [MAX_LPC_ORDER + 1]);
> + LOCAL_ALIGNED(16, double, dst1, [MAX_LPC_ORDER + 1]);
> +
> + declare_func(void, const double *in, ptrdiff_t len, int lag, double
> *out); +
> + av_assert0(lag >= 0 && lag <= MAX_LPC_ORDER);
> +
> + for (int i = 0; i < MAX_LPC_ORDER; i++)
> + src[i] = 0.;
> +
> + src += MAX_LPC_ORDER;
> +
> + for (ptrdiff_t i = 0; i < len; i++) {
> + src[i] = (double)rnd() / (double)UINT_MAX;
> + }
> +
> + call_ref(src, len, lag, dst0);
> + call_new(src, len, lag, dst1);
> +
> + for (size_t i = 0; i < lag; i++) {
Should also check dst[lag] AFAIU.
> + if (!double_near_abs_eps(dst0[i], dst1[i], EPS)) {
> + fprintf(stderr, "%zu: %- .12f - %- .12f = % .12g\n",
> + i, dst0[i], dst1[i], dst0[i] - dst1[i]);
> + fail();
> + break;
> + }
> + }
> +
> + bench_new(src, len, lag, dst1);
> +}
> +#endif
> +
> void checkasm_check_lpc(void)
> {
> LPCContext ctx;
> - int len = rnd() % 5000;
> + int len = 2000 + (rnd() % 3000);
> +#if !ARCH_X86
> + static const int lags[] = { 10, 30, 32 };
> +#endif
> +
> ff_lpc_init(&ctx, 32, 16, FF_LPC_TYPE_DEFAULT);
>
> if (check_func(ctx.lpc_apply_welch_window, "apply_welch_window_even"))
> { @@ -72,6 +113,15 @@ void checkasm_check_lpc(void)
> test_window(len | 1);
> }
> report("apply_welch_window_odd");
> -
> ff_lpc_end(&ctx);
> +
> +#if !ARCH_X86
> + for (size_t i = 0; i < FF_ARRAY_ELEMS(lags); i++) {
> + ff_lpc_init(&ctx, len, lags[i], FF_LPC_TYPE_DEFAULT);
> + if (check_func(ctx.lpc_compute_autocorr, "autocorr_%d", lags[i]))
> + test_compute_autocorr(len, lags[i]);
> + report("compute_autocorr_%d", lags[i]);
> + ff_lpc_end(&ctx);
> + }
> +#endif
> }
--
レミ・デニ-クールモン
http://www.remlab.net/
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