Support for video file instead of camera and output video out to file

webrtc/examples/androidapp/start_loopback_stubbed_camera_saved_video_out.py

+# Copyright 2016 The WebRTC Project Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# tree. An additional intellectual property rights grant can be found
+# in the file PATENTS.  All contributing project authors may
+# be found in the AUTHORS file in the root of the source tree.
+from com.android.monkeyrunner import MonkeyRunner, MonkeyDevice
+
+import string
+import time
+import random
+import sys
+import subprocess
+
+devname = sys.argv[2]
+
+videoout = sys.argv[3]
+
+room = ''.join(random.choice(string.ascii_letters + string.digits)
+                for _ in range(8))
+
+# Delete output video file
+subprocess.Popen(['adb', '-s', devname, 'shell', 'rm',
+        '/storage/emulated/0/output.y4m'])
+#sys.exit()
+
+device = MonkeyRunner.waitForConnection(2, devname)
+
+extras = {
+        'org.appspot.apprtc.AUDIOCODEC': 'OPUS',
+        'org.appspot.apprtc.LOOPBACK': True,
+        'org.appspot.apprtc.VIDEOCODEC': 'VP8',
+        'org.appspot.apprtc.CAPTURETOTEXTURE': False,
+        'org.appspot.apprtc.CAMERA2': False,
+        'org.appspot.apprtc.VIDEO_FILE_AS_CAMERA':
+                '/storage/emulated/0/nv21_1280x720.yuv',
+        'org.appspot.apprtc.VIDEO_FILE_AS_CAMERA_WIDTH': 1280,
+        'org.appspot.apprtc.VIDEO_FILE_AS_CAMERA_HEIGHT': 720,
+        'org.appspot.apprtc.SAVE_REMOTE_VIDEO_TO_FILE':
+                '/storage/emulated/0/output.y4m',
+        'org.appspot.apprtc.SAVE_REMOTE_VIDEO_TO_FILE_WIDTH': 1280,
+        'org.appspot.apprtc.SAVE_REMOTE_VIDEO_TO_FILE_HEIGHT': 720,
+        'org.appspot.apprtc.ROOMID': room}
+
+# ACTION_VIEW is equivalent to android.intent.action.VIEW,
+# see https://developer.android.com/reference/android/content/Intent.html#ACTION_VIEW
+device.startActivity(data='https://appr.tc', action='ACTION_VIEW',
+                component='org.appspot.apprtc/.CallActivity', extras=extras)
+
+time.sleep(10)
+
+# Press back to end the call. Will end on both sides
+device.press('KEYCODE_BACK', MonkeyDevice.DOWN_AND_UP)
+
+subprocess.Popen(['adb', '-s', devname, 'pull',
+        '/storage/emulated/0/output.y4m', videoout])
+