From 17f75f3ce62235e948443ba10d62d140ea329357 Mon Sep 17 00:00:00 2001
From: Matt Nadareski <mnadareski@outlook.com>
Date: Thu, 17 Sep 2020 10:37:04 -0700
Subject: [PATCH] First parts of layerbreak info

---
 DICUI.Library/Aaru/Parameters.cs | 46 ++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/DICUI.Library/Aaru/Parameters.cs b/DICUI.Library/Aaru/Parameters.cs
index 7299d113..12de2bf9 100644
--- a/DICUI.Library/Aaru/Parameters.cs
+++ b/DICUI.Library/Aaru/Parameters.cs
@@ -1585,6 +1585,25 @@ namespace DICUI.Aaru
                         info.SizeAndChecksums.SHA1 = sha1;
                     }
 
+                    // Deal with the layerbreak
+                    string layerbreak = null;
+                    if (type == MediaType.DVD)
+                        layerbreak = GetLayerbreak(sidecar) ?? "";
+                    else if (type == MediaType.BluRay)
+                        layerbreak = (info.SizeAndChecksums.Size > 25025314816 ? "25025314816" : null);
+
+                    // If we have a single-layer disc
+                    if (string.IsNullOrWhiteSpace(layerbreak))
+                    {
+                        info.Extras.PVD = GeneratePVD(sidecar) ?? "Disc has no PVD";
+                    }
+                    // If we have a dual-layer disc
+                    else
+                    {
+                        info.Extras.PVD = GeneratePVD(sidecar) ?? "Disc has no PVD";
+                        info.SizeAndChecksums.Layerbreak = Int64.Parse(layerbreak);
+                    }
+
                     // TODO: Investigate XGD disc outputs
                     // TODO: Get layerbreak information
                     // TODO: Investigate BD specifics like PIC
@@ -2782,6 +2801,33 @@ namespace DICUI.Aaru
             }
         }
 
+        /// <summary>
+        /// Get the layerbreak from the input file, if possible
+        /// </summary>
+        /// <param name="cicmSidecar">CICM Sidecar data generated by Aaru</param>
+        /// <returns>Layerbreak if possible, null on error</returns>
+        private static string GetLayerbreak(CICMMetadataType cicmSidecar)
+        {
+            // If the object is null, we can't get information from it
+            if (cicmSidecar == null)
+                return null;
+
+            // Only care about OpticalDisc types
+            if (cicmSidecar.OpticalDisc == null || cicmSidecar.OpticalDisc.Length == 0)
+                return null;
+
+            // Setup the layerbreak
+            string layerbreak = null;
+
+            // Find and return the layerbreak, if possible
+            foreach (OpticalDiscType opticalDisc in cicmSidecar.OpticalDisc)
+            {
+                // TODO: Determine how to find the layerbreak from the CICM
+            }
+
+            return layerbreak;
+        }
+
         /// <summary>
         /// Get the write offset from the CICM Sidecar file, if possible
         /// </summary>