- added FLAC container / file support, see 'Handreichung retrodigitalisierte Tondokumente', v1.0

SLUB_mediaconch_policy_retrodigitized_audio.xml

 <?xml version="1.0"?>
 <policy type="or" name="SLUB Policy for MKV/linear PCM, retrodigitized audio" license="CC-BY-SA-4.0+">
   <description>SLUB related policy to test that the audio file is suitable for archiving purposes.
-    This checks if a Matroska/linear PCM fulfills the needs for Audio retrodigitization:
-    - Container format is Matroska with error detection (CRC)
-    - Audio format is PCM (unfortunately it can not contain error detection) or FLAC (it has CRC by design)
+    This checks either 
+    - if a Matroska/linear PCM fulfills the needs for Audio retrodigitization:
+       - Container format is Matroska with error detection (CRC)
+       - Audio format is PCM (unfortunately it can not contain error detection) or FLAC (it has CRC by design)
+    - else a FLAC
+       - if a FLAC-file fulfills the needs for Audio retrodigitization:
+       - Container format is FLAC with error detection (CRC)
+       - Audio format is FLAC (it has CRC by design)
     This policy is based on:
     - Example MKV FFV1 digitization policy.xml
     - Video file is MKV + FFV1-Intra + PCM or FLAC with CRC32 everywhere.xml
     If there are any policy violations or suggestions, please send an email to langzeitarchiv@slub-dresden.de
     
-    Hint: this policy is well tested with mediaconch v18.0 and v22.09
+    Hint: this policy is well tested with mediaconch v24.06
   </description>
+  <policy type="and" name="FLAC-Container, FLAC-codec, error detection">
+    <policy type="and" name="Container">
+      <policy type="or" name="FileExtension">
+        <rule name="General/FileExtension is flac" value="FileExtension" tracktype="General" occurrence="*" operator="=">flac</rule>
+      </policy>
+      <rule name="Container is FLAC" value="Format" tracktype="General" occurrence="*" operator="=">FLAC</rule>
+    </policy>
+    <policy type="and" name="Audio">
+      <rule name="General/AudioCount is 1" value="AudioCount" tracktype="General" occurrence="*" operator="&gt;=">1</rule>
+      <rule name="Audio/Compression_Mode is Lossless" value="Compression_Mode" tracktype="Audio" occurrence="*" operator="=">Lossless</rule>
+      <policy type="or" name="Audio is FLAC">
+        <rule name="Audio is FLAC" value="Format" tracktype="Audio" occurrence="*" operator="=">FLAC</rule>
+      </policy>
+      <policy name="Audio is multiple of 48kHz till 192kHz" type="or">
+        <rule name="Audio is 48000 Hz" value="SamplingRate" tracktype="Audio" occurrence="*" operator="=">48000</rule>
+        <rule name="Audio is 96000 Hz" value="SamplingRate" tracktype="Audio" occurrence="*" operator="=">96000</rule>
+        <rule name="Audio is 144000 Hz" value="SamplingRate" tracktype="Audio" occurrence="*" operator="=">144000</rule>
+        <rule name="Audio is 192000 Hz" value="SamplingRate" tracktype="Audio" occurrence="*" operator="=">192000</rule>
+      </policy>
+      <policy type="or" name="Audio is Stereo or Mono">
+        <rule name="Audio is mono" value="Channels" tracktype="Audio" occurrence="*" operator="=">1</rule>
+        <rule name="Audio is stereo" value="Channels" tracktype="Audio" occurrence="*" operator="=">2</rule>
+      </policy>
+      <policy type="or" name="Bit Depth is at least 16 Bit">
+        <rule name="Bit Depth is 16" value="BitDepth" tracktype="Audio" occurrence="*" operator="=">16</rule>
+        <rule name="Bit Depth is 24" value="BitDepth" tracktype="Audio" occurrence="*" operator="=">24</rule>
+      </policy>  
+      
+    </policy>
+  </policy>
+  
+  <!-- -->
   <policy type="and" name="MKV, FFV1 Intra, PCM/FLAC, error detection">
     <policy type="and" name="Container">
       <policy type="or" name="FileExtension">
@@ -26,6 +63,7 @@
     </policy>
     <policy type="and" name="Audio">
       <rule name="General/AudioCount is 1" value="AudioCount" tracktype="General" occurrence="*" operator="&gt;=">1</rule>
+      <rule name="Audio/Compression_Mode is Lossless" value="Compression_Mode" tracktype="Audio" occurrence="*" operator="=">Lossless</rule>
       <policy type="or" name="Audio is PCM or FLAC">
         <rule name="Audio is PCM" value="Format" tracktype="Audio" occurrence="*" operator="=">PCM</rule>
         <rule name="Audio is FLAC" value="Format" tracktype="Audio" occurrence="*" operator="=">FLAC</rule>