[nodes] PanoramaPostProcessing: Add attributes to change the outputs' names

Add input String parameters to determine the name of the generated outputs.
These attributes include:
- the name of the generated output panorama
- the name of the generated output panorama preview
The base folder for these outputs remains the node's cache, only the
name of the outputs themselves can be updated.

The output attribute about the downscaled levels of the panorama is also
modified with the new name of the pyramid levels, which is a concatenation
of the generated panorama's name and the size of the current level.

meshroom/nodes/aliceVision/PanoramaPostProcessing.py

@@ -83,6 +83,24 @@ Post process the panorama.
             uid=[0],
             enabled=lambda node: node.compressionMethod.value in ["dwaa", "dwab", "zip", "zips"]
         ),
+        desc.StringParam(
+            name="panoramaName",
+            label="Output Panorama Name",
+            description="Name of the output panorama.",
+            value="panorama.exr",
+            uid=[],
+            group=None,
+            advanced=True
+        ),
+        desc.StringParam(
+            name="previewName",
+            label="Panorama Preview Name",
+            description="Name of the preview of the output panorama.",
+            value="panoramaPreview.jpg",
+            uid=[],
+            group=None,
+            advanced=True,
+        ),
         desc.ChoiceParam(
             name="verboseLevel",
             label="Verbose Level",
@@ -100,7 +118,7 @@ Post process the panorama.
             label="Output Panorama",
             description="Generated panorama in EXR format.",
             semantic="image",
-            value=desc.Node.internalFolder + "panorama.exr",
+            value=lambda attr: desc.Node.internalFolder + attr.node.panoramaName.value,
             uid=[],
         ),
         desc.File(
@@ -108,14 +126,14 @@ Post process the panorama.
             label="Output Panorama Preview",
             description="Preview of the generated panorama in JPG format.",
             semantic="image",
-            value=desc.Node.internalFolder + "panoramaPreview.jpg",
+            value=lambda attr: desc.Node.internalFolder + attr.node.previewName.value,
             uid=[],
         ),
         desc.File(
             name="downscaledPanoramaLevels",
             label="Downscaled Panorama Levels",
             description="Downscaled versions of the generated panorama.",
-            value=desc.Node.internalFolder + "level_*.exr",
+            value=lambda attr: desc.Node.internalFolder + os.path.splitext(attr.node.panoramaName.value)[0] + "_level_*.exr",
             uid=[],
             group='',
         ),