ltpf: Move analysis to fixed point

test/neon/ltpf_neon.c

@@ -0,0 +1,116 @@
+/******************************************************************************
+ *
+ *  Copyright 2022 Google LLC
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at:
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ ******************************************************************************/
+
+#include "neon.h"
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+/* -------------------------------------------------------------------------- */
+
+#define TEST_NEON
+#include <ltpf.c>
+
+void lc3_put_bits_generic(lc3_bits_t *a, unsigned b, int c)
+{ (void)a, (void)b, (void)c; }
+
+unsigned lc3_get_bits_generic(struct lc3_bits *a, int b)
+{ return (void)a, (void)b, 0; }
+
+/* -------------------------------------------------------------------------- */
+
+static int check_resampler()
+{
+    int16_t __x[60+480], *x = __x + 60;
+    for (int i = -60; i < 480; i++)
+          x[i] = rand() & 0xffff;
+
+    struct lc3_ltpf_hp50_state hp50 = { 0 }, hp50_neon = { 0 };
+    int16_t y[128], y_neon[128];
+
+    resample_16k_12k8(&hp50, x, y, 128);
+    neon_resample_16k_12k8(&hp50_neon, x, y_neon, 128);
+    if (memcmp(y, y_neon, 128 * sizeof(*y)) != 0)
+        return printf("Error\n"), -1;
+
+    resample_32k_12k8(&hp50, x, y, 128);
+    neon_resample_32k_12k8(&hp50_neon, x, y_neon, 128);
+    if (memcmp(y, y_neon, 128 * sizeof(*y)) != 0)
+        return printf("Error\n"), -1;
+
+    resample_48k_12k8(&hp50, x, y, 128);
+    neon_resample_48k_12k8(&hp50_neon, x, y_neon, 128);
+    if (memcmp(y, y_neon, 128 * sizeof(*y)) != 0)
+        return -1;
+
+    return 0;
+}
+
+static int check_dot()
+{
+    int16_t x[200];
+    for (int i = 0; i < 200; i++)
+        x[i] = rand() & 0xffff;
+
+    float y = dot(x, x+3, 128);
+    float y_neon = neon_dot(x, x+3, 128);
+    if (y != y_neon)
+        return -1;
+
+    return 0;
+}
+
+static int check_correlate()
+{
+    int16_t alignas(4) a[500], b[500];
+    float y[100], y_neon[100];
+
+    for (int i = 0; i < 500; i++) {
+        a[i] = rand() & 0xffff;
+        b[i] = rand() & 0xffff;
+    }
+
+    correlate(a, b+200, 128, y, 100);
+    neon_correlate(a, b+200, 128, y_neon, 100);
+    if (memcmp(y, y_neon, 100 * sizeof(*y)) != 0)
+        return -1;
+
+    correlate(a, b+199, 128, y, 99);
+    neon_correlate(a, b+199, 128, y_neon, 99);
+    if (memcmp(y, y_neon, 99 * sizeof(*y)) != 0)
+        return -1;
+
+    return 0;
+}
+
+int check_ltpf(void)
+{
+    int ret;
+
+    if ((ret = check_resampler()) < 0)
+        return ret;
+
+    if ((ret = check_dot()) < 0)
+        return ret;
+
+    if ((ret = check_correlate()) < 0)
+        return ret;
+
+    return 0;
+}