init

2026-07-24 01:12:37 -07:00
commit 10486656d5
5 changed files with 306 additions and 0 deletions
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+#include "pipemini/pipemini.h"
+#include <math.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int main() {
+    const int sample_rate = 48000;
+    const float freq = 440.0f;
+    float phase = 0.0f;
+
+    PipeMini audio;
+
+    bool ok = audio.start([&](int16_t* left, int16_t* right) {
+        float s = sinf(phase) * 0.25f; // quiet sine
+        int16_t v = (int16_t)(s * 32767.0f);
+        *left = v;
+        *right = v;
+
+        phase += 2.0f * 3.14159265f * freq / sample_rate;
+        if (phase > 2.0f * 3.14159265f) phase -= 2.0f * 3.14159265f;
+    }, sample_rate);
+
+    if (!ok) {
+        fprintf(stderr, "failed to start audio\n");
+        return 1;
+    }
+
+    printf("playing 440 Hz sine for 5 seconds...\n");
+    sleep(5);
+
+    return 0;
+}