Twilio serializer reading dtmf websocket messages and generating InputDTMFFrame containing the corresponding value of KeypadEntry

src/pipecat/frames/frames.py

@@ -5,6 +5,7 @@
 #
 
 from dataclasses import dataclass, field
+from enum import Enum
 from typing import TYPE_CHECKING, Any, Awaitable, Callable, List, Literal, Mapping, Optional, Tuple
 
 from pipecat.audio.vad.vad_analyzer import VADParams
@@ -18,6 +19,23 @@ if TYPE_CHECKING:
     from pipecat.observers.base_observer import BaseObserver
 
 
+class KeypadEntry(str, Enum):
+    """DTMF entries."""
+
+    ONE = "1"
+    TWO = "2"
+    THREE = "3"
+    FOUR = "4"
+    FIVE = "5"
+    SIX = "6"
+    SEVEN = "7"
+    EIGHT = "8"
+    NINE = "9"
+    ZERO = "0"
+    POUND = "#"
+    STAR = "*"
+
+
 def format_pts(pts: int | None):
     return nanoseconds_to_str(pts) if pts else None
 
@@ -615,6 +633,13 @@ class VisionImageRawFrame(InputImageRawFrame):
         return f"{self.name}(pts: {pts}, text: [{self.text}], size: {self.size}, format: {self.format})"
 
 
+@dataclass
+class InputDTMFFrame(Frame):
+    """A DTMF button input"""
+
+    button: KeypadEntry
+
+
 #
 # Control frames
 #