adds libwav

1 files changed, 25 insertions, 0 deletions

diff --git a/3rdparty/libwav/tests/write_f32/main.c b/3rdparty/libwav/tests/write_f32/main.c
new file mode 100644
index 0000000..14f4f33
--- /dev/null
+++ b/3rdparty/libwav/tests/write_f32/main.c
@@ -0,0 +1,25 @@
+#include <math.h>
+#include <stdlib.h>
+#include "wav.h"
+
+void generate_sine_wave(float *x, int sample_rate, int len)
+{
+    for (int i = 0; i < len; ++i) {
+        x[i] = 0.5f * cosf(2 * 3.14159265358979323f * 440.0f * i / sample_rate);
+    }
+}
+
+int main(void)
+{
+    float *buf = malloc(sizeof(float) * 10 * 44100);
+    generate_sine_wave(buf, 44100, 10 * 44100);
+    WavFile *fp = wav_open("out.wav", WAV_OPEN_WRITE);
+    wav_set_format(fp, WAV_FORMAT_IEEE_FLOAT);
+    /* wav_set_sample_size(fp, sizeof(float)); */
+    wav_set_num_channels(fp, 1);
+    wav_set_sample_rate(fp, 44100);
+    wav_write(fp, buf, 10 * 44100);
+    wav_close(fp);
+    free(buf);
+    return 0;
+}