first working

frametypes/ch10_pcm.py

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+from typing import Dict, List, Any
+from scapy.all import Packet
+
+from .base import FrameTypeInterface
+
+
+class Ch10PCMStats(FrameTypeInterface):
+    """Chapter 10 PCM (Pulse Code Modulation) Data Statistics"""
+    def __init__(self):
+        super().__init__()
+        self.name = "Chapter 10 PCM"
+        self.count = 0
+        self.bytes = 0
+        self.first_time = None
+        self.last_time = None
+        self.channel_ids = set()
+        self.frame_sync_errors = 0
+        self.bit_slip_events = 0
+        self.minor_frame_count = 0
+        self.major_frame_count = 0
+    
+    def add(self, timestamp: float, size: int, packet: Packet):
+        self.count += 1
+        self.bytes += size
+        if self.first_time is None:
+            self.first_time = timestamp
+        self.last_time = timestamp
+        
+        # In real implementation, decode PCM frame structure
+    
+    def get_summary_dict(self) -> Dict[str, Any]:
+        duration = (self.last_time or 0) - (self.first_time or 0)
+        return {
+            'Pkts': self.count,
+            'Bytes': self.bytes,
+            'Duration': round(duration, 3),
+            'Channels': len(self.channel_ids),
+            'Sync Errors': self.frame_sync_errors,
+            'Bit Slips': self.bit_slip_events,
+            'Minor Frames': self.minor_frame_count,
+            'Major Frames': self.major_frame_count
+        }
+    
+    def get_column_definitions(self) -> List[tuple]:
+        return [
+            ('Pkts', 'd'),
+            ('Bytes', 'd'),
+            ('Duration', '.3f'),
+            ('Channels', 'd'),
+            ('Sync Errors', 'd'),
+            ('Bit Slips', 'd'),
+            ('Minor Frames', 'd'),
+            ('Major Frames', 'd')
+        ]