channels

CHANNEL_CONTROL.md

@@ -0,0 +1,70 @@
+# Channel Control Commands
+
+This document describes the command-line tools for controlling the video player service.
+
+## Quick Usage
+
+### Simple Channel Change
+```bash
+# Change to random channel
+./channel
+
+# Change to specific channel
+./channel 5
+```
+
+### Advanced Control
+```bash
+# Change to random channel
+python3 change_channel.py
+
+# Change to specific channel
+python3 change_channel.py 5
+
+# Show current channel
+python3 change_channel.py --current
+
+# List all available channels
+python3 change_channel.py --list
+
+# Stop video player service
+python3 change_channel.py --stop
+```
+
+## Features
+
+- **Random Channel Selection**: If no channel is specified, automatically selects a random channel
+- **Service Communication**: Communicates with the running video player service via Unix socket
+- **Real-time Control**: Changes channels instantly without restarting the service
+- **Channel Information**: Shows current channel and available channels
+
+## Requirements
+
+- Video player service must be running
+- Control socket must be available at `/tmp/video_player_control.sock`
+- Python virtual environment activated (on server)
+
+## Examples
+
+```bash
+# On the server (tulivision@192.168.1.160)
+cd rpi-tulivision
+source venv/bin/activate
+
+# Quick random channel change
+./channel
+
+# Change to channel 7
+./channel 7
+
+# Check what's currently playing
+python3 change_channel.py --current
+```
+
+## Technical Details
+
+The channel control system uses:
+- Unix domain sockets for inter-process communication
+- JSON-based command protocol
+- Thread-safe command processing
+- Automatic error handling and timeouts

change_channel.py

@@ -0,0 +1,207 @@
+#!/usr/bin/env python3
+"""
+Channel Change Command Line Tool
+Allows changing channels in the running video player service
+"""
+
+import os
+import sys
+import json
+import argparse
+import socket
+import time
+import signal
+from pathlib import Path
+
+class ChannelController:
+    """Controller for changing channels in the video player service"""
+    
+    def __init__(self, socket_path="/tmp/video_player_control.sock"):
+        self.socket_path = socket_path
+        self.config_path = "config.json"
+        self.config = self.load_config()
+    
+    def load_config(self):
+        """Load configuration from JSON file"""
+        try:
+            if os.path.exists(self.config_path):
+                with open(self.config_path, 'r') as f:
+                    return json.load(f)
+            else:
+                return {}
+        except Exception as e:
+            print(f"Error loading config: {e}")
+            return {}
+    
+    def send_command(self, command):
+        """Send command to video player service via Unix socket"""
+        try:
+            # Create Unix socket connection
+            sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+            sock.settimeout(5.0)  # 5 second timeout
+            
+            # Connect to the video player service
+            sock.connect(self.socket_path)
+            
+            # Send command
+            command_data = json.dumps(command).encode('utf-8')
+            sock.send(command_data)
+            
+            # Receive response
+            response_data = sock.recv(1024).decode('utf-8')
+            response = json.loads(response_data)
+            
+            sock.close()
+            return response
+            
+        except FileNotFoundError:
+            print("Error: Video player service is not running or control socket not found")
+            print("Make sure the video player service is started")
+            return {"success": False, "error": "Service not running"}
+        except ConnectionRefusedError:
+            print("Error: Cannot connect to video player service")
+            print("The service may not be running or may not support control commands")
+            return {"success": False, "error": "Connection refused"}
+        except Exception as e:
+            print(f"Error communicating with video player service: {e}")
+            return {"success": False, "error": str(e)}
+    
+    def change_channel(self, channel_number=None):
+        """Change to specified channel or random if not specified"""
+        if channel_number is None:
+            command = {"action": "random_channel"}
+            print("Changing to random channel...")
+        else:
+            command = {"action": "change_channel", "channel": channel_number}
+            print(f"Changing to channel {channel_number}...")
+        
+        response = self.send_command(command)
+        
+        if response.get("success"):
+            if channel_number is None:
+                actual_channel = response.get("channel")
+                channel_name = response.get("channel_name", "Unknown")
+                print(f"Successfully changed to random channel {actual_channel}: {channel_name}")
+            else:
+                channel_name = response.get("channel_name", "Unknown")
+                print(f"Successfully changed to channel {channel_number}: {channel_name}")
+        else:
+            error = response.get("error", "Unknown error")
+            print(f"Failed to change channel: {error}")
+            return False
+        
+        return True
+    
+    def list_channels(self):
+        """List available channels"""
+        command = {"action": "list_channels"}
+        response = self.send_command(command)
+        
+        if response.get("success"):
+            channels = response.get("channels", {})
+            if channels:
+                print("Available channels:")
+                print("-" * 50)
+                for channel_num in sorted(channels.keys()):
+                    channel = channels[channel_num]
+                    print(f"Channel {channel_num}: {channel['name']}")
+            else:
+                print("No channels available")
+        else:
+            error = response.get("error", "Unknown error")
+            print(f"Failed to list channels: {error}")
+    
+    def get_current_channel(self):
+        """Get current playing channel"""
+        command = {"action": "get_current_channel"}
+        response = self.send_command(command)
+        
+        if response.get("success"):
+            channel = response.get("channel")
+            channel_name = response.get("channel_name", "Unknown")
+            if channel:
+                print(f"Currently playing: Channel {channel} - {channel_name}")
+            else:
+                print("No channel currently playing")
+        else:
+            error = response.get("error", "Unknown error")
+            print(f"Failed to get current channel: {error}")
+    
+    def stop_service(self):
+        """Stop the video player service"""
+        command = {"action": "stop"}
+        response = self.send_command(command)
+        
+        if response.get("success"):
+            print("Video player service stopped")
+        else:
+            error = response.get("error", "Unknown error")
+            print(f"Failed to stop service: {error}")
+
+def parse_arguments():
+    """Parse command line arguments"""
+    parser = argparse.ArgumentParser(
+        description="Change channels in the video player service",
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+        epilog="""
+Examples:
+  python3 change_channel.py                    # Change to random channel
+  python3 change_channel.py 5                  # Change to channel 5
+  python3 change_channel.py --list             # List available channels
+  python3 change_channel.py --current          # Show current channel
+  python3 change_channel.py --stop             # Stop video player service
+        """
+    )
+    
+    parser.add_argument(
+        'channel',
+        nargs='?',
+        type=int,
+        help='Channel number to change to (if not specified, changes to random channel)'
+    )
+    
+    parser.add_argument(
+        '--list',
+        action='store_true',
+        help='List available channels'
+    )
+    
+    parser.add_argument(
+        '--current',
+        action='store_true',
+        help='Show current playing channel'
+    )
+    
+    parser.add_argument(
+        '--stop',
+        action='store_true',
+        help='Stop the video player service'
+    )
+    
+    parser.add_argument(
+        '--socket',
+        type=str,
+        default='/tmp/video_player_control.sock',
+        help='Path to control socket (default: /tmp/video_player_control.sock)'
+    )
+    
+    return parser.parse_args()
+
+def main():
+    """Main entry point"""
+    args = parse_arguments()
+    
+    controller = ChannelController(args.socket)
+    
+    if args.list:
+        controller.list_channels()
+    elif args.current:
+        controller.get_current_channel()
+    elif args.stop:
+        controller.stop_service()
+    else:
+        # Change channel (random if not specified)
+        controller.change_channel(args.channel)
+
+if __name__ == "__main__":
+    main()

channel

@@ -0,0 +1,12 @@
+#!/bin/bash
+# Simple wrapper script for changing channels
+# Usage: ./channel [channel_number] or ./channel (for random)
+
+# Default to random if no argument provided
+if [ $# -eq 0 ]; then
+    echo "Changing to random channel..."
+    python3 change_channel.py
+else
+    echo "Changing to channel $1..."
+    python3 change_channel.py "$1"
+fi

video_player.py

@@ -14,6 +14,7 @@ import queue
 import subprocess
 import argparse
 import random
+import socket
 from pathlib import Path
 from typing import Dict, List, Optional, Tuple
 import vlc
@@ -60,6 +61,11 @@ class VideoPlayer:
         # Channel refresh tracking
         self.last_channel_refresh = time.time()
         
+        # Control socket for external commands
+        self.control_socket_path = "/tmp/video_player_control.sock"
+        self.control_socket = None
+        self.control_thread = None
+        
         self.logger.info("Video Player initialized")
     
     def load_config(self) -> Dict:
@@ -143,6 +149,10 @@ class VideoPlayer:
             self.vlc_instance = vlc.Instance(all_vlc_options)
             self.vlc_player = self.vlc_instance.media_player_new()
             
+            # Set up event manager for video end detection
+            self.vlc_event_manager = self.vlc_player.event_manager()
+            self.vlc_event_manager.event_attach(vlc.EventType.MediaPlayerEndReached, self.on_video_end)
+            
             # Set fullscreen and always on top
             if '--fullscreen' in vlc_options:
                 self.vlc_player.set_fullscreen(True)
@@ -472,6 +482,116 @@ class VideoPlayer:
         self.logger.info("Power toggle - shutting down")
         self.running = False
     
+    def setup_control_socket(self):
+        """Setup Unix socket for external control commands"""
+        try:
+            # Remove existing socket file if it exists
+            if os.path.exists(self.control_socket_path):
+                os.unlink(self.control_socket_path)
+            
+            # Create Unix socket
+            self.control_socket = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+            self.control_socket.bind(self.control_socket_path)
+            self.control_socket.listen(1)
+            
+            # Start control thread
+            self.control_thread = threading.Thread(target=self.handle_control_commands, daemon=True)
+            self.control_thread.start()
+            
+            self.logger.info(f"Control socket setup at {self.control_socket_path}")
+            return True
+        except Exception as e:
+            self.logger.error(f"Failed to setup control socket: {e}")
+            return False
+    
+    def handle_control_commands(self):
+        """Handle control commands from external clients"""
+        while self.running:
+            try:
+                # Accept connection
+                client_socket, _ = self.control_socket.accept()
+                
+                # Receive command
+                data = client_socket.recv(1024).decode('utf-8')
+                command = json.loads(data)
+                
+                # Process command
+                response = self.process_control_command(command)
+                
+                # Send response
+                response_data = json.dumps(response).encode('utf-8')
+                client_socket.send(response_data)
+                
+                client_socket.close()
+                
+            except Exception as e:
+                if self.running:  # Only log if we're still supposed to be running
+                    self.logger.error(f"Error handling control command: {e}")
+                time.sleep(0.1)
+    
+    def process_control_command(self, command):
+        """Process a control command and return response"""
+        action = command.get("action")
+        
+        try:
+            if action == "change_channel":
+                channel = command.get("channel")
+                if channel and channel in self.channels:
+                    success = self.play_channel(channel)
+                    if success:
+                        return {
+                            "success": True,
+                            "channel": channel,
+                            "channel_name": self.channels[channel]["name"]
+                        }
+                    else:
+                        return {"success": False, "error": "Failed to play channel"}
+                else:
+                    return {"success": False, "error": f"Invalid channel: {channel}"}
+            
+            elif action == "random_channel":
+                success = self.play_random_video()
+                if success:
+                    return {
+                        "success": True,
+                        "channel": self.current_channel,
+                        "channel_name": self.channels[self.current_channel]["name"] if self.current_channel else "Unknown"
+                    }
+                else:
+                    return {"success": False, "error": "Failed to play random channel"}
+            
+            elif action == "list_channels":
+                return {
+                    "success": True,
+                    "channels": self.channels
+                }
+            
+            elif action == "get_current_channel":
+                if self.current_channel and self.current_channel in self.channels:
+                    return {
+                        "success": True,
+                        "channel": self.current_channel,
+                        "channel_name": self.channels[self.current_channel]["name"]
+                    }
+                else:
+                    return {
+                        "success": True,
+                        "channel": None,
+                        "channel_name": None
+                    }
+            
+            elif action == "stop":
+                self.logger.info("Stop command received via control socket")
+                self.running = False
+                return {"success": True}
+            
+            else:
+                return {"success": False, "error": f"Unknown action: {action}"}
+                
+        except Exception as e:
+            self.logger.error(f"Error processing control command: {e}")
+            return {"success": False, "error": str(e)}
+    
     def start(self, startup_mode: str = "default", channel_number: int = None, video_index: int = None):
         """Start the video player with specified mode
         
@@ -509,6 +629,10 @@ class VideoPlayer:
         else:
             self.logger.info("IR remote control disabled, skipping IR processing thread")
         
+        # Setup control socket for external commands
+        if not self.setup_control_socket():
+            self.logger.warning("Failed to setup control socket, external commands will not work")
+        
         # Play based on startup mode
         success = False
         if startup_mode == "random":
@@ -566,17 +690,21 @@ class VideoPlayer:
         finally:
             self.cleanup()
     
+    def on_video_end(self, event):
+        """Callback for when a video ends - start a random channel"""
+        self.logger.info("Video ended, starting random channel")
+        if self.channels:
+            self.play_random_video()
+        else:
+            self.logger.error("No channels available to play after video end")
+    
     def ensure_video_playing(self):
         """Ensure a video is always playing"""
         if not self.vlc_player or not self.vlc_player.is_playing():
-            if self.current_channel and self.current_channel in self.channels:
-                self.logger.info(f"Restarting current channel {self.current_channel}")
-                self.play_channel(self.current_channel)
-            elif self.channels:
-                # Play the first available channel
-                first_channel = min(self.channels.keys())
-                self.logger.info(f"No current channel, playing first available channel {first_channel}")
-                self.play_channel(first_channel)
+            if self.channels:
+                # Play a random channel instead of restarting current or first channel
+                self.logger.info("No video playing, starting random channel")
+                self.play_random_video()
             else:
                 self.logger.error("No channels available to play")
     
@@ -600,6 +728,21 @@ class VideoPlayer:
         
         if self.enable_ir:
             GPIO.cleanup()
+        
+        # Cleanup control socket
+        if self.control_socket:
+            try:
+                self.control_socket.close()
+            except:
+                pass
+        
+        # Remove socket file
+        if os.path.exists(self.control_socket_path):
+            try:
+                os.unlink(self.control_socket_path)
+            except:
+                pass
+        
         self.logger.info("Cleanup complete")
 
 def parse_arguments():