add example for the send audio

example/send_audio.py

@@ -0,0 +1,39 @@
+import sys
+import numpy as np
+import NDIlib as ndi
+
+
+def main():
+
+    if not ndi.initialize():
+        print('Cannot run NDI.')
+        return 0
+
+    send_create_desc = ndi.SendCreate()
+    send_create_desc.ndi_name = 'My Audio'
+    send_create_desc.clock_audio = True
+
+    ndi_send = ndi.send_create(send_create_desc)
+
+    if ndi_send is None:
+        return 0
+
+    audio_frame = ndi.AudioFrameV2()
+    audio_frame.sample_rate = 48000
+    audio_frame.no_channels = 4
+    audio_frame.no_samples = 1920
+
+    for i in range(1000):
+        audio_frame.data = np.zeros((4, 1920), dtype=np.float)
+        ndi.send_send_audio_v2(ndi_send, audio_frame)
+        print('Frame number %d sent.' % i)
+
+    ndi.send_destroy(ndi_send)
+
+    ndi.destroy()
+
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())