cosmopolitan/test/dsp/core/sad16x8n_test.c

108 lines
4.1 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "dsp/core/core.h"
#include "dsp/mpeg/mpeg.h"
#include "libc/limits.h"
#include "libc/log/check.h"
#include "libc/nexgen32e/x86feature.h"
#include "libc/rand/rand.h"
#include "libc/runtime/buffer.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/testlib.h"
void addsw$pure(size_t n, short x[n][8], const short y[n][8]) {
size_t i, j;
for (i = 0; i < n; ++i) {
for (j = 0; j < 8; ++j) {
x[i][j] = MIN(MAX(x[i][j] + y[i][j], INT16_MIN), INT16_MAX);
}
}
}
short *pcm1;
short *pcm2;
struct GuardedBuffer b1, b2;
TEST(sad16x8n, test) {
CHECK_NOTNULL((pcm1 = balloc(&b1, 32, 128 * 2)));
CHECK_NOTNULL((pcm2 = balloc(&b2, 32, 128 * 2)));
pcm1[0] = 0;
pcm2[0] = 0;
pcm1[1] = 23;
pcm2[1] = 10;
pcm1[2] = 23;
pcm2[2] = -10;
pcm1[3] = 23;
pcm2[3] = -46;
pcm1[120 + 0] = 0;
pcm2[120 + 0] = 0;
pcm1[120 + 1] = 23;
pcm2[120 + 1] = 10;
pcm1[120 + 2] = 23;
pcm2[120 + 2] = -10;
pcm1[120 + 3] = 23;
pcm2[120 + 3] = -46;
sad16x8n(128 / 8, (void *)pcm1, (void *)pcm2);
EXPECT_EQ(0, pcm1[0]);
EXPECT_EQ(33, pcm1[1]);
EXPECT_EQ(13, pcm1[2]);
EXPECT_EQ(-23, pcm1[3]);
EXPECT_EQ(0, pcm1[120 + 0]);
EXPECT_EQ(33, pcm1[120 + 1]);
EXPECT_EQ(13, pcm1[120 + 2]);
EXPECT_EQ(-23, pcm1[120 + 3]);
bfree(&b1);
bfree(&b2);
}
//////////////////////////////////////////////////////////////////////
// audio frame mixing latency: ~60ns (sse2 10x faster than pure)
//
// 1f ~= 14ms (cd quality)
// (1.0 / 41000) * (1.0 / 2) * (1152 / 1.0)
//
// 1f ~= 845µs (dolby truehd)
// (1.0 / 192000) * (1.0 / 7.1) * (1152 / 1.0)
//
// @note plm frame always has exactly 1152 floats
void randomizeaudio(void) {
size_t i;
for (i = 0; i < PLM_AUDIO_SAMPLES_PER_FRAME; ++i) {
pcm1[i] = (rand() - INT_MAX / 2) % INT16_MAX;
pcm2[i] = (rand() - INT_MAX / 2) % INT16_MAX;
}
}
void sad16x8n_sse2(void) {
sad16x8n(PLM_AUDIO_SAMPLES_PER_FRAME / 8, (void *)pcm1, (void *)pcm2);
}
void sad16x8n_pure(void) {
addsw$pure(PLM_AUDIO_SAMPLES_PER_FRAME / 8, (void *)pcm1, (void *)pcm2);
}
BENCH(sad16x8n, audioframe) {
CHECK_NOTNULL((pcm1 = balloc(&b1, 32, PLM_AUDIO_SAMPLES_PER_FRAME * 2)));
CHECK_NOTNULL((pcm2 = balloc(&b2, 32, PLM_AUDIO_SAMPLES_PER_FRAME * 2)));
EZBENCH(randomizeaudio(), sad16x8n_pure());
EZBENCH(randomizeaudio(), sad16x8n_sse2());
bfree(&b1);
bfree(&b2);
}