89 lines
3.0 KiB
Python
89 lines
3.0 KiB
Python
"""
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Monkey-patch for mpegdash to handle non-integer AdaptationSet id/group attributes.
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TIDAL recently started returning MPD manifests with string values like "main"
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for the AdaptationSet `id` and `group` attributes, which mpegdash expects to be integers.
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This causes a ValueError: invalid literal for int() with base 10: 'main'
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This patch modifies the parse_attr_value function to gracefully handle
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non-integer values for attributes that are expected to be integers.
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"""
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import logging
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logger = logging.getLogger(__name__)
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_patched = False
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def _safe_int(value: str) -> int | None:
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"""Safely convert a value to int, returning None if conversion fails."""
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try:
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return int(value)
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except (ValueError, TypeError):
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return None
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def apply_mpegdash_patch() -> None:
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"""
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Apply a monkey-patch to mpegdash to handle string values in integer fields.
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This patches the parse_attr_value function in mpegdash.utils to gracefully
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handle non-integer values (like "main") for attributes expected to be integers.
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"""
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global _patched
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if _patched:
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return
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try:
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from mpegdash import utils as mpegdash_utils
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import re
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# Store the original function
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original_parse_attr_value = mpegdash_utils.parse_attr_value
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def patched_parse_attr_value(xmlnode, attr_name, value_type):
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"""
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Patched version of parse_attr_value that handles non-integer values gracefully.
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"""
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if attr_name not in xmlnode.attributes.keys():
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return None
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attr_val = xmlnode.attributes[attr_name].nodeValue
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if isinstance(value_type, list):
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attr_type = value_type[0] if len(value_type) > 0 else str
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try:
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return [attr_type(elem) for elem in re.split(r"[, ]", attr_val)]
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except (ValueError, TypeError):
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# If conversion fails, return as strings
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return [str(elem) for elem in re.split(r"[, ]", attr_val)]
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# Handle integer conversion failures gracefully
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if value_type == int:
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result = _safe_int(attr_val)
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if result is None:
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logger.debug(
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f"mpegdash: Could not convert '{attr_name}'='{attr_val}' to int, using None"
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)
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return result
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try:
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return value_type(attr_val)
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except (ValueError, TypeError):
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logger.debug(
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f"mpegdash: Could not convert '{attr_name}'='{attr_val}' to {value_type.__name__}, using None"
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)
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return None
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# Apply the patch
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mpegdash_utils.parse_attr_value = patched_parse_attr_value
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_patched = True
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logger.debug("mpegdash patch applied successfully")
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except ImportError:
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logger.warning("Could not import mpegdash, patch not applied")
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except Exception as e:
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logger.warning(f"Failed to apply mpegdash patch: {e}")
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