add example for the ndi recv

example/recv.py

@@ -0,0 +1,59 @@
+import sys
+import numpy as np
+import NDIlib as ndi
+
+
+def main():
+
+    if not ndi.initialize():
+        return 0
+
+    ndi_find = ndi.find_create_v2()
+
+    if ndi_find is None:
+        return 0
+
+    sources = []
+    while not len(sources) > 0:
+        print('Looking for sources ...')
+        ndi.find_wait_for_sources(ndi_find, 1000)
+        sources = ndi.find_get_current_sources(ndi_find)
+
+    ndi_recv_create = ndi.RecvCreateV3()
+    ndi_recv_create.color_format = ndi.RECV_COLOR_FORMAT_BGRX_BGRA
+
+    ndi_recv = ndi.recv_create_v3(ndi_recv_create)
+
+    if ndi_recv is None:
+        return 0
+
+    ndi.recv_connect(ndi_recv, sources[0])
+
+    ndi.find_destroy(ndi_find)
+
+    while True:
+        t, v, a, _ = ndi.recv_capture_v2(ndi_recv, 5000)
+
+        if t == ndi.FRAME_TYPE_NONE:
+            print('No data received.')
+            continue
+
+        if t == ndi.FRAME_TYPE_VIDEO:
+            print('Video data received (%dx%d).' % (v.xres, v.yres))
+            ndi.recv_free_video_v2(ndi_recv, v)
+            continue
+
+        if t == ndi.FRAME_TYPE_AUDIO:
+            print('Audio data received (%d samples).' % a.no_samples)
+            ndi.recv_free_audio_v2(ndi_recv, a)
+            continue
+
+    ndi.recv_destroy(ndi_recv)
+
+    ndi.destroy()
+
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())