Limit text size to 4096 bytes (#394)

Fix https://github.com/rany2/edge-tts/issues/390

Signed-off-by: rany <rany2@riseup.net>

src/edge_tts/communicate.py

@@ -311,26 +311,6 @@ def ssml_headers_plus_data(request_id: str, timestamp: str, ssml: str) -> str:
     )
 
 
-def calc_max_mesg_size(tts_config: TTSConfig) -> int:
-    """Calculates the maximum message size for the given voice, rate, and volume.
-
-    Returns:
-        int: The maximum message size.
-    """
-    websocket_max_size: int = 2**16
-    overhead_per_message: int = (
-        len(
-            ssml_headers_plus_data(
-                connect_id(),
-                date_to_string(),
-                mkssml(tts_config, ""),
-            )
-        )
-        + 50  # margin of error
-    )
-    return websocket_max_size - overhead_per_message
-
-
 class CommunicateRequest(TypedDict):
     """
     A class to communicate with the service.
@@ -379,7 +359,7 @@ class Communicate:
         # Split the text into multiple strings and store them.
         self.texts = split_text_by_byte_length(
             escape(remove_incompatible_characters(text)),
-            calc_max_mesg_size(self.tts_config),
+            4096,
         )
 
         # Validate the proxy parameter.

src/edge_tts/srt_composer.py

@@ -1,6 +1,6 @@
 """A tiny library for composing SRT files.
 
-Based on https://github.com/cdown/srt with parsing, subtitle modifying,
+Based on https://github.com/cdown/srt with parsing, subtitle modifying
 functionality and Python 2 support removed. This is because of
 https://github.com/rany2/edge-tts/issues/383.