Add patch

tidal_dl_ng/helper/mpegdash_patch.py

@@ -0,0 +1,88 @@
+"""
+Monkey-patch for mpegdash to handle non-integer AdaptationSet id/group attributes.
+
+TIDAL recently started returning MPD manifests with string values like "main"
+for the AdaptationSet `id` and `group` attributes, which mpegdash expects to be integers.
+This causes a ValueError: invalid literal for int() with base 10: 'main'
+
+This patch modifies the parse_attr_value function to gracefully handle
+non-integer values for attributes that are expected to be integers.
+"""
+
+import logging
+
+logger = logging.getLogger(__name__)
+
+_patched = False
+
+
+def _safe_int(value: str) -> int | None:
+    """Safely convert a value to int, returning None if conversion fails."""
+    try:
+        return int(value)
+    except (ValueError, TypeError):
+        return None
+
+
+def apply_mpegdash_patch() -> None:
+    """
+    Apply a monkey-patch to mpegdash to handle string values in integer fields.
+
+    This patches the parse_attr_value function in mpegdash.utils to gracefully
+    handle non-integer values (like "main") for attributes expected to be integers.
+    """
+    global _patched
+
+    if _patched:
+        return
+
+    try:
+        from mpegdash import utils as mpegdash_utils
+        import re
+
+        # Store the original function
+        original_parse_attr_value = mpegdash_utils.parse_attr_value
+
+        def patched_parse_attr_value(xmlnode, attr_name, value_type):
+            """
+            Patched version of parse_attr_value that handles non-integer values gracefully.
+            """
+            if attr_name not in xmlnode.attributes.keys():
+                return None
+
+            attr_val = xmlnode.attributes[attr_name].nodeValue
+
+            if isinstance(value_type, list):
+                attr_type = value_type[0] if len(value_type) > 0 else str
+                try:
+                    return [attr_type(elem) for elem in re.split(r"[, ]", attr_val)]
+                except (ValueError, TypeError):
+                    # If conversion fails, return as strings
+                    return [str(elem) for elem in re.split(r"[, ]", attr_val)]
+
+            # Handle integer conversion failures gracefully
+            if value_type == int:
+                result = _safe_int(attr_val)
+                if result is None:
+                    logger.debug(
+                        f"mpegdash: Could not convert '{attr_name}'='{attr_val}' to int, using None"
+                    )
+                return result
+
+            try:
+                return value_type(attr_val)
+            except (ValueError, TypeError):
+                logger.debug(
+                    f"mpegdash: Could not convert '{attr_name}'='{attr_val}' to {value_type.__name__}, using None"
+                )
+                return None
+
+        # Apply the patch
+        mpegdash_utils.parse_attr_value = patched_parse_attr_value
+        _patched = True
+        logger.debug("mpegdash patch applied successfully")
+
+    except ImportError:
+        logger.warning("Could not import mpegdash, patch not applied")
+    except Exception as e:
+        logger.warning(f"Failed to apply mpegdash patch: {e}")