audiomixer: improve sse and sse2 mixer

Add mixer benchmark.
Improve sse and sse2 mixer function by removin some read/write to the
temporary buffer at the expense of more scattered reads.

spa/plugins/audiomixer/benchmark-mix-ops.c

@@ -0,0 +1,217 @@
+/* Spa
+ *
+ * Copyright © 2019 Wim Taymans
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include "config.h"
+
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <time.h>
+
+#include "test-helper.h"
+#include "mix-ops.h"
+
+static uint32_t cpu_flags;
+
+typedef void (*mix_func_t) (struct mix_ops *ops, void * SPA_RESTRICT dst,
+		const void * SPA_RESTRICT src[], uint32_t n_src, uint32_t n_samples);
+struct stats {
+	uint32_t n_samples;
+	uint32_t n_src;
+	uint64_t perf;
+	const char *name;
+	const char *impl;
+};
+
+#define MAX_SAMPLES	4096
+#define MAX_SRC		11
+
+#define MAX_COUNT 100
+
+static uint8_t samp_in[MAX_SAMPLES * MAX_SRC * 8];
+static uint8_t samp_out[MAX_SAMPLES * 8];
+
+static const int sample_sizes[] = { 0, 1, 128, 513, 4096 };
+static const int src_counts[] = { 1, 2, 4, 6, 8, 11 };
+
+#define MAX_RESULTS	SPA_N_ELEMENTS(sample_sizes) * SPA_N_ELEMENTS(src_counts) * 70
+
+static uint32_t n_results = 0;
+static struct stats results[MAX_RESULTS];
+
+static void run_test1(const char *name, const char *impl, mix_func_t func, int n_src, int n_samples)
+{
+	int i, j;
+	const void *ip[n_src];
+	void *op;
+	struct timespec ts;
+	uint64_t count, t1, t2;
+	struct mix_ops mix;
+
+	mix.n_channels = 1;
+
+	for (j = 0; j < n_src; j++)
+		ip[j] = SPA_PTR_ALIGN(&samp_in[j * n_samples * 4], 16, void);
+	op = SPA_PTR_ALIGN(samp_out, 16, void);
+
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+	t1 = SPA_TIMESPEC_TO_NSEC(&ts);
+
+	count = 0;
+	for (i = 0; i < MAX_COUNT; i++) {
+		func(&mix, op, ip, n_src, n_samples);
+		count++;
+	}
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+	t2 = SPA_TIMESPEC_TO_NSEC(&ts);
+
+	spa_assert(n_results < MAX_RESULTS);
+
+	results[n_results++] = (struct stats) {
+		.n_samples = n_samples,
+		.n_src = n_src,
+		.perf = count * (uint64_t)SPA_NSEC_PER_SEC / (t2 - t1),
+		.name = name,
+		.impl = impl
+	};
+}
+
+static void run_test(const char *name, const char *impl, mix_func_t func)
+{
+	size_t i, j;
+
+	for (i = 0; i < SPA_N_ELEMENTS(sample_sizes); i++) {
+		for (j = 0; j < SPA_N_ELEMENTS(src_counts); j++) {
+			run_test1(name, impl, func, src_counts[j],
+				(sample_sizes[i] + (src_counts[j] -1)) / src_counts[j]);
+		}
+	}
+}
+
+static void test_s8(void)
+{
+	run_test("test_s8", "c", mix_s8_c);
+}
+static void test_u8(void)
+{
+	run_test("test_u8", "c", mix_u8_c);
+}
+
+static void test_s16(void)
+{
+	run_test("test_s16", "c", mix_s16_c);
+}
+static void test_u16(void)
+{
+	run_test("test_u8", "c", mix_u16_c);
+}
+
+static void test_s24(void)
+{
+	run_test("test_s24", "c", mix_s24_c);
+}
+static void test_u24(void)
+{
+	run_test("test_u24", "c", mix_u24_c);
+}
+static void test_s24_32(void)
+{
+	run_test("test_s24_32", "c", mix_s24_32_c);
+}
+static void test_u24_32(void)
+{
+	run_test("test_u24_32", "c", mix_u24_32_c);
+}
+
+static void test_s32(void)
+{
+	run_test("test_s32", "c", mix_s32_c);
+}
+static void test_u32(void)
+{
+	run_test("test_u32", "c", mix_u32_c);
+}
+
+static void test_f32(void)
+{
+	run_test("test_f32", "c", mix_f32_c);
+#if defined (HAVE_SSE)
+	if (cpu_flags & SPA_CPU_FLAG_SSE) {
+		run_test("test_f32", "sse", mix_f32_sse);
+	}
+#endif
+}
+
+static void test_f64(void)
+{
+	run_test("test_f64", "c", mix_f64_c);
+#if defined (HAVE_SSE2)
+	if (cpu_flags & SPA_CPU_FLAG_SSE2) {
+		run_test("test_f64", "sse2", mix_f64_sse2);
+	}
+#endif
+}
+
+static int compare_func(const void *_a, const void *_b)
+{
+	const struct stats *a = _a, *b = _b;
+	int diff;
+	if ((diff = strcmp(a->name, b->name)) != 0) return diff;
+	if ((diff = a->n_samples - b->n_samples) != 0) return diff;
+	if ((diff = a->n_src - b->n_src) != 0) return diff;
+	if ((diff = b->perf - a->perf) != 0) return diff;
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	uint32_t i;
+
+	cpu_flags = get_cpu_flags();
+	printf("got get CPU flags %d\n", cpu_flags);
+
+	test_s8();
+	test_u8();
+	test_s16();
+	test_u16();
+	test_s24();
+	test_u24();
+	test_s32();
+	test_u32();
+	test_s24_32();
+	test_u24_32();
+	test_f32();
+	test_f64();
+
+	qsort(results, n_results, sizeof(struct stats), compare_func);
+
+	for (i = 0; i < n_results; i++) {
+		struct stats *s = &results[i];
+		fprintf(stderr, "%-12."PRIu64" \t%-32.32s %s \t samples %d, src %d\n",
+				s->perf, s->name, s->impl, s->n_samples, s->n_src);
+	}
+	return 0;
+}