add example for framesync resend

example/recv_framesync_resend.py

@@ -0,0 +1,67 @@
+import sys
+import time
+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 = ndi.recv_create_v3()
+
+    if ndi_recv is None:
+        return 0
+
+    ndi.recv_connect(ndi_recv, sources[0])
+
+    ndi_framesync = ndi.framesync_create(ndi_recv)
+
+    ndi.find_destroy(ndi_find)
+
+    create_params = ndi.SendCreate()
+    create_params.clock_video = True
+    create_params.clock_audio = False
+
+    ndi_send = ndi.send_create(create_params)
+
+    current_time = 0
+    t = time.time()
+    while time.time() - t < 5.0 * 60:
+        v = ndi.framesync_capture_video(ndi_framesync)
+        if v.data.size != 0:
+            ndi.send_send_video_v2(ndi_send, v)
+            frame_start = current_time
+            current_time += (v.frame_rate_D * 480000) / v.frame_rate_N
+            ndi.framesync_free_video(ndi_framesync, v)
+            no_audio_samples = (current_time + 5) / 10 - (frame_start + 5) / 10
+            a = ndi.framesync_capture_audio(
+                ndi_framesync, 48000, 4, int(no_audio_samples))
+            ndi.send_send_audio_v2(ndi_send, a)
+            ndi.framesync_free_audio(ndi_framesync, a)
+        else:
+            time.sleep(33/1000)
+
+    ndi.framesync_destoroy(ndi_framesync)
+
+    ndi.recv_destroy(ndi_recv)
+
+    ndi.destroy()
+
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())