1 files changed, 91 insertions, 0 deletions
diff --git a/tidal_dl_ng/helper/mpegdash_patch.py b/tidal_dl_ng/helper/mpegdash_patch.py
new file mode 100644
index 0000000..4cccf0e
--- /dev/null
+++ b/tidal_dl_ng/helper/mpegdash_patch.py
@@ -0,0 +1,91 @@
+"""
+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
+import re
+
+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 _convert_list(attr_val: str, value_type) -> list[str]:
+    attr_type = value_type[0] if value_type else str
+    try:
+        return [attr_type(elem) for elem in re.split(r"[, ]", attr_val)]
+    except (ValueError, TypeError):
+        return [str(elem) for elem in re.split(r"[, ]", attr_val)]
+
+
+def _convert_single(attr_name: str, attr_val: str, value_type):
+    if value_type == int:
+        result = _safe_int(attr_val)
+        if result is None:
+            logger.debug(
+                "mpegdash: Could not convert '%s'='%s' to int, using None",
+                attr_name,
+                attr_val,
+            )
+        return result
+    try:
+        return value_type(attr_val)
+    except (ValueError, TypeError):
+        logger.debug(
+            "mpegdash: Could not convert '%s'='%s' to %s, using None",
+            attr_name,
+            attr_val,
+            value_type.__name__,
+        )
+        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
+
+        def patched_parse_attr_value(xmlnode, attr_name, value_type):
+            if attr_name not in xmlnode.attributes:
+                return None
+
+            attr_val = xmlnode.attributes[attr_name].nodeValue
+
+            if isinstance(value_type, list):
+                return _convert_list(attr_val, value_type)
+
+            return _convert_single(attr_name, attr_val, value_type)
+
+        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("Failed to apply mpegdash patch: %s", e)