From 56a0fbbe9dd6307279fe3bea7abb0b90a897845e Mon Sep 17 00:00:00 2001
From: Alice Sonolet <alice.sonolet@gmail.com>
Date: Wed, 15 Jul 2026 18:00:08 +0200
Subject: [PATCH 1/3] Add new InlineNode node type for simple process

---
 meshroom/core/desc/__init__.py |  1 +
 meshroom/core/desc/node.py     | 15 ++++++++++++---
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/meshroom/core/desc/__init__.py b/meshroom/core/desc/__init__.py
index c9c11a48ec..10339b7d50 100644
--- a/meshroom/core/desc/__init__.py
+++ b/meshroom/core/desc/__init__.py
@@ -47,6 +47,7 @@
     InternalAttributesFactory,
     MrNodeType,
     Node,
+    InlineNode,
     NodeVersionType,
     NodeVersionTypeEnum,
 )
diff --git a/meshroom/core/desc/node.py b/meshroom/core/desc/node.py
index d3710551f5..e247678eef 100644
--- a/meshroom/core/desc/node.py
+++ b/meshroom/core/desc/node.py
@@ -57,6 +57,7 @@ class MrNodeType(enum.Enum):
     NONE = enum.auto()
     BASENODE = enum.auto()
     NODE = enum.auto()
+    INLINE = enum.auto()
     COMMANDLINE = enum.auto()
     INIT = enum.auto()
     BACKDROP = enum.auto()
@@ -527,9 +528,6 @@ class InitNode(BaseNode):
     def __init__(self):
         super(InitNode, self).__init__()
 
-    def getMrNodeType(self):
-        return self._mrNodeType
-
     def processChunk(self, chunk):
         pass
 
@@ -586,6 +584,17 @@ def processChunkInEnvironment(self, chunk):
                                      env=runtimeEnv)
 
 
+class InlineNode(BaseNode):
+    """
+    Node that can be computed in the current Meshroom environment.
+    """
+    parallelization = None
+    _mrNodeType: MrNodeType = MrNodeType.INLINE
+
+    def __init__(self):
+        super(InlineNode, self).__init__()
+
+
 class CommandLineNode(BaseNode):
     """
     """

From 63826edb5532d30bfc8389794ff8362ed392532e Mon Sep 17 00:00:00 2001
From: Alice Sonolet <alice.sonolet@gmail.com>
Date: Wed, 15 Jul 2026 18:06:12 +0200
Subject: [PATCH 2/3] Convert nodes to InlineNode when it is a good option

---
 meshroom/nodes/general/FlattenFiles.py             | 2 +-
 meshroom/nodes/general/GetParentFolder.py          | 2 +-
 meshroom/nodes/general/PathJoin.py                 | 2 +-
 meshroom/nodes/general/UnwrapMeshroomSceneParam.py | 6 +++---
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/meshroom/nodes/general/FlattenFiles.py b/meshroom/nodes/general/FlattenFiles.py
index 7ce3301351..ddf6b7e1a2 100644
--- a/meshroom/nodes/general/FlattenFiles.py
+++ b/meshroom/nodes/general/FlattenFiles.py
@@ -3,7 +3,7 @@
 from meshroom.core import desc
 
 
-class FlattenFiles(desc.Node):
+class FlattenFiles(desc.InlineNode):
     """
     This node takes a list of lists of files as input and produces a single flat list of
     files as output.
diff --git a/meshroom/nodes/general/GetParentFolder.py b/meshroom/nodes/general/GetParentFolder.py
index c823ceceee..e8f706afd8 100644
--- a/meshroom/nodes/general/GetParentFolder.py
+++ b/meshroom/nodes/general/GetParentFolder.py
@@ -5,7 +5,7 @@
 from meshroom.core import desc
 
 
-class GetParentFolder(desc.Node):
+class GetParentFolder(desc.InlineNode):
     """ Get the parent folder """
     
     category = "Other"
diff --git a/meshroom/nodes/general/PathJoin.py b/meshroom/nodes/general/PathJoin.py
index 51a949daa0..958e1b1a5f 100644
--- a/meshroom/nodes/general/PathJoin.py
+++ b/meshroom/nodes/general/PathJoin.py
@@ -4,7 +4,7 @@
 from meshroom.core import desc
 
 
-class PathJoin(desc.Node):
+class PathJoin(desc.InlineNode):
     """ Join multiple paths """
     
     category = "Other"
diff --git a/meshroom/nodes/general/UnwrapMeshroomSceneParam.py b/meshroom/nodes/general/UnwrapMeshroomSceneParam.py
index 37f6c79ebf..6e65957176 100644
--- a/meshroom/nodes/general/UnwrapMeshroomSceneParam.py
+++ b/meshroom/nodes/general/UnwrapMeshroomSceneParam.py
@@ -8,7 +8,7 @@
 from meshroom.core import desc
 
 
-class UnwrapMeshroomSceneParam(desc.CommandLineNode):
+class UnwrapMeshroomSceneParam(desc.InlineNode):
     """Unwrap the JSON file created by a GetMeshroomSceneParams node
     to expose its items to the graph.
     
@@ -96,5 +96,5 @@ def update(self, node):
         except Exception as e:
             logging.warning(f"[UnwrapMeshroomSceneParam] Failed to set the choices: {e}")
 
-    def processChunk(self, chunk):
-        self.setOutput(chunk.node)
+    def process(self, node):
+        self.setOutput(node)

From 7e8798a8c0ece5ff7ef331e16f8b3650e8ad8909 Mon Sep 17 00:00:00 2001
From: Alice Sonolet <alice.sonolet@gmail.com>
Date: Wed, 15 Jul 2026 18:06:24 +0200
Subject: [PATCH 3/3] Add GetFileExtension node

---
 meshroom/nodes/general/GetFileExtension.py | 27 ++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 meshroom/nodes/general/GetFileExtension.py

diff --git a/meshroom/nodes/general/GetFileExtension.py b/meshroom/nodes/general/GetFileExtension.py
new file mode 100644
index 0000000000..d7a448e827
--- /dev/null
+++ b/meshroom/nodes/general/GetFileExtension.py
@@ -0,0 +1,27 @@
+__version__ = "1.0"
+
+import os
+from meshroom.core import desc
+
+
+class GetFileExtension(desc.InlineNode):
+    inputs = [
+        desc.File(
+            name="path",
+            value="",
+            exposed=True,
+        ),
+    ]
+
+    outputs = [
+        desc.StringParam(
+            name="extension",
+            value=None,
+        ),
+    ]
+
+    def process(self, node):
+        if not node.path.value:
+            node.extension.value = ""
+        else:
+            node.extension.value = os.path.splitext(node.path.value)[1]