Spektrafilm (dev branch) analog film simulation module

data/darktableconfig.xml.in

@@ -2685,6 +2685,27 @@
     <shortdescription>crossover ISO for X-Trans FDC demosaicing</shortdescription>
     <longdescription>up to, and including, this ISO, X-Trans frequency domain chroma demosaicing uses the hybrid mode for determining chroma; for all higher ISO values the pure FDC is used.</longdescription>
   </dtconfig>
+  <dtconfig prefs="security" section="other">
+    <name>plugins/darkroom/spektrafilm/allow_download</name>
+    <type>bool</type>
+    <default>false</default>
+    <shortdescription>allow spektrafilm to download data packs</shortdescription>
+    <longdescription>allow the spektrafilm module to fetch its spectral data pack over the network when the pack an edit needs is not installed locally. every file is verified against a checksum from the repository manifest before it is installed, and downloaded packs are written to the spektrafilm/packs subfolder of the configuration folder, so they are backed up with the rest of the configuration and survive clearing the cache. a pack installed by hand directly in spektrafilm/ is always preferred over a downloaded one.</longdescription>
+  </dtconfig>
+  <dtconfig>
+    <name>plugins/darkroom/spektrafilm/repository</name>
+    <type>string</type>
+    <default>piratenpanda/darktable-spektrafilm</default>
+    <shortdescription>spektrafilm data repository</shortdescription>
+    <longdescription>repository holding the spektrafilm spectral data packs, as owner/repo. the files are read over https; git is not required.</longdescription>
+  </dtconfig>
+  <dtconfig>
+    <name>plugins/darkroom/spektrafilm/ref</name>
+    <type>string</type>
+    <default>main</default>
+    <shortdescription>spektrafilm data repository ref</shortdescription>
+    <longdescription>tag or branch to read the spektrafilm data packs from. a tag is preferable where one exists: an immutable ref is what lets an old edit fetch the exact spectral table it was developed against, where a branch hands over whatever is current.</longdescription>
+  </dtconfig>
   <dtconfig>
     <name>plugins/darkroom/denoiseprofile/show_compute_variance_mode</name>
     <type>bool</type>

data/kernels/programs.conf

@@ -42,3 +42,4 @@ capture.cl              38
 agx.cl                  39
 colorharmonizer.cl      40
 overlay.cl              41
+spektrafilm.cl          42