Changes to accommodate disabling the output video

config.json

@@ -1,6 +1,8 @@
 {
     "instance_name": "Test",
     "db_name": "videocommander.db",
+    "display_config": ":1",
+    "disabled_name": "Disable Video",
     "video_tool": "ffplay",
     "buttons": [
         {

video_dbbuilder.py

@@ -56,6 +56,16 @@ db = sqlite3.connect(config_json["db_name"])
 db.execute(destroy_table)
 db.execute(make_table)
 
+db.execute(insert_row, [
+    config_json["disabled_name"],
+    "",
+    "",
+    0,
+    0
+])
+
+db.commit()
+
 for button in config_json["buttons"]:
     db.execute(insert_row, [
         button["name"],

video_player.py

@@ -6,12 +6,12 @@ import time
 import json
 
 get_active_video = r'''
-SELECT video_url, video_arguments FROM buttons
+SELECT video_url, video_arguments, button_name FROM buttons
 WHERE is_active = 1
 LIMIT 1
 '''
 
-def play_video(previous_process, video_player_path, player_arguments, video_url):
+def play_video(previous_process, video_player_path, player_arguments, video_url, env):
     if not previous_process is None:
         os.killpg(os.getpgid(previous_process.pid), signal.SIGTERM)
 
@@ -24,42 +24,41 @@ def play_video(previous_process, video_player_path, player_arguments, video_url)
         stdout = subprocess.PIPE,
         stderr = subprocess.PIPE,
         shell = True,
-        preexec_fn = os.setsid
+        preexec_fn = os.setsid,
+        env = env
     )
 
-def get_active_video_url(db):
+def get_active_video(db):
     cursor = db.execute(get_active_video)
     return cursor.fetchall()[0]
 
 with open("config.json", "r") as config_file:
     config_json = json.loads(config_file.read())
 
+my_env = os.environ.copy()
+my_env["DISPLAY"] = config_json["display_config"]
+
 current_process = None
 current_video = None
 db = sqlite3.connect(config_json["db_name"])
 
 while True:
-    if current_process is None:
-        current_video = get_active_video_url(db)
+    active_video = get_active_video(db)
 
-        current_process = play_video(
-            current_process,
-            config_json["video_tool"],
-            current_video[0],
-            current_video[1]
-        )
-
-    active_video = get_active_video_url(db)
-
-    if current_video[0] != active_video[0]:
+    if current_video[2] != active_video[2]:
         current_video = active_video
 
-        current_process = play_video(
-            current_process,
-            config_json["video_tool"],
-            current_video[0],
-            current_video[1]
-        )
+        if current_video[2] == config_json["disabled_name"] and not current_process is None:
+            os.killpg(os.getpgid(current_process.pid), signal.SIGTERM)
+            current_process = None
+        else:
+            current_process = play_video(
+                current_process,
+                config_json["video_tool"],
+                current_video[0],
+                current_video[1],
+                my_env
+            )
 
     time.sleep(1)