From a88010d7a102768205cfd766d0bb5cc04c69e4d8 Mon Sep 17 00:00:00 2001
From: Malte Rosenbjerg <rosenbjerg@users.noreply.github.com>
Date: Sun, 26 Jul 2020 02:55:42 +0200
Subject: [PATCH] Changed input for SeekedFileInputArgument

Former-commit-id: ef49542de050427926ae89c98a6f7f7d13d2b789
---
 .../Arguments/SeekedFileInputArgument.cs      | 19 +++++++++++--------
 FFMpegCore/FFMpeg/FFMpeg.cs                   |  2 +-
 FFMpegCore/FFMpeg/FFMpegArguments.cs          |  2 +-
 3 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/FFMpegCore/FFMpeg/Arguments/SeekedFileInputArgument.cs b/FFMpegCore/FFMpeg/Arguments/SeekedFileInputArgument.cs
index 6770b8e..4a29116 100644
--- a/FFMpegCore/FFMpeg/Arguments/SeekedFileInputArgument.cs
+++ b/FFMpegCore/FFMpeg/Arguments/SeekedFileInputArgument.cs
@@ -1,5 +1,6 @@
 using System;
 using System.IO;
+using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -7,22 +8,24 @@ namespace FFMpegCore.Arguments
 {
     public class SeekedFileInputArgument : IInputArgument
     {
-        public readonly string FilePath;
-        public readonly TimeSpan StartTime;
+        public readonly (string FilePath, TimeSpan StartTime)[] SeekedFiles;
 
-        public SeekedFileInputArgument(string filePath, TimeSpan startTime)
+        public SeekedFileInputArgument((string file, TimeSpan startTime)[] seekedFiles)
         {
-            FilePath = filePath;
-            StartTime = startTime;
+            SeekedFiles = seekedFiles;
         }
+
         public void Pre()
         {
-            if (!File.Exists(FilePath))
-                throw new FileNotFoundException("Input file not found", FilePath);
+            foreach (var (seekedFile, _) in SeekedFiles)
+            {
+                if (!File.Exists(seekedFile))
+                    throw new FileNotFoundException("Input file not found", seekedFile);
+            }
         }
         public Task During(CancellationToken? cancellationToken = null) => Task.CompletedTask;
         public void Post() { }
         
-        public string Text => $"-ss {StartTime} -i \"{FilePath}\"";
+        public string Text => string.Join(" ", SeekedFiles.Select(seekedFile => $"-ss {seekedFile.StartTime} -i \"{seekedFile.FilePath}\""));
     }
 }
\ No newline at end of file
diff --git a/FFMpegCore/FFMpeg/FFMpeg.cs b/FFMpegCore/FFMpeg/FFMpeg.cs
index 9d95ce2..6e70354 100644
--- a/FFMpegCore/FFMpeg/FFMpeg.cs
+++ b/FFMpegCore/FFMpeg/FFMpeg.cs
@@ -30,7 +30,7 @@ public static bool Snapshot(MediaAnalysis source, string output, Size? size = nu
             size = PrepareSnapshotSize(source, size);
 
             return FFMpegArguments
-                .FromSeekedFile(source.Path, captureTime ?? TimeSpan.Zero)
+                .FromSeekedFiles((source.Path, captureTime ?? TimeSpan.Zero))
                 .WithVideoCodec(VideoCodec.Png)
                 .WithFrameOutputCount(1)
                 .Resize(size)
diff --git a/FFMpegCore/FFMpeg/FFMpegArguments.cs b/FFMpegCore/FFMpeg/FFMpegArguments.cs
index 9118458..b3285f6 100644
--- a/FFMpegCore/FFMpeg/FFMpegArguments.cs
+++ b/FFMpegCore/FFMpeg/FFMpegArguments.cs
@@ -25,7 +25,7 @@ private FFMpegArguments(IInputArgument inputArgument)
 
         public string Text => string.Join(" ", _arguments.Select(arg => arg.Text));
         
-        public static FFMpegArguments FromSeekedFile(string file, TimeSpan startTime) => new FFMpegArguments(new SeekedFileInputArgument(file, startTime));
+        public static FFMpegArguments FromSeekedFiles(params (string file, TimeSpan startTime)[] seekedFiles) => new FFMpegArguments(new SeekedFileInputArgument(seekedFiles));
         public static FFMpegArguments FromInputFiles(params string[] files) => new FFMpegArguments(new InputArgument(true, files));
         public static FFMpegArguments FromInputFiles(bool verifyExists, params string[] files) => new FFMpegArguments(new InputArgument(verifyExists, files));
         public static FFMpegArguments FromInputFiles(params Uri[] uris) => new FFMpegArguments(new InputArgument(false, uris));