Merge 94db493d19 into eb221c3e49

FFMpegCore.Test/ArgumentBuilderTest.cs

@@ -9,6 +9,7 @@ namespace FFMpegCore.Test
     public class ArgumentBuilderTest
     {
         private readonly string[] _concatFiles = { "1.mp4", "2.mp4", "3.mp4", "4.mp4" };
+        private readonly string[] _multiFiles = { "1.mp3", "2.mp3", "3.mp3", "4.mp3" };
 
         [TestMethod]
         public void Builder_BuildString_IO_1()
@@ -611,5 +612,86 @@ public void Builder_BuildString_TeeOutput()
                 -i "input.mp4" -f tee "[movflags=faststart]output.mp4|[f=mpegts:select=\'0:v:0\']http://server/path"
                 """, str);
         }
+        [TestMethod]
+        public void Builder_BuildString_MultiInput()
+        {
+            var audioStreams = string.Join("", _multiFiles.Select((item, index) => $"[{index}:0]"));
+            var mixFilter = $"{audioStreams}amix=inputs={_multiFiles.Length}:duration=longest:dropout_transition=1:normalize=0[final]";
+            var ffmpegArgs = $"-filter_complex \"{mixFilter}\" -map \"[final]\"";
+            var str = FFMpegArguments
+                .FromFileInput(_multiFiles)
+                .OutputToFile("output.mp3", overwrite: true, options => options
+                    .WithCustomArgument(ffmpegArgs)
+                    .WithAudioCodec(AudioCodec.LibMp3Lame) // Set the audio codec to MP3
+                    .WithAudioBitrate(128) // Set the bitrate to 128kbps
+                    .WithAudioSamplingRate(48000) // Set the sample rate to 48kHz
+                    .WithoutMetadata() // Remove metadata
+                    .WithCustomArgument("-ac 2 -write_xing 0 -id3v2_version 0")) // Force 2 Channels
+                .Arguments;
+            Assert.AreEqual($"-i \"1.mp3\" -i \"2.mp3\" -i \"3.mp3\" -i \"4.mp3\" -filter_complex \"[0:0][1:0][2:0][3:0]amix=inputs=4:duration=longest:dropout_transition=1:normalize=0[final]\" -map \"[final]\" -c:a libmp3lame -b:a 128k -ar 48000 -map_metadata -1 -ac 2 -write_xing 0 -id3v2_version 0 \"output.mp3\" -y", str);
+        }
+        [TestMethod]
+        public void Pre_VerifyExists_AllFilesExist()
+        {
+            // Arrange
+            var filePaths = new List<string>
+            {
+                Path.GetTempFileName(),
+                Path.GetTempFileName(),
+                Path.GetTempFileName()
+            };
+            var argument = new MultiInputArgument(true, filePaths);
+            try
+            {
+                // Act & Assert
+                argument.Pre(); // No exception should be thrown
+            }
+            finally
+            {
+                // Cleanup
+                foreach (var filePath in filePaths)
+                {
+                    File.Delete(filePath);
+                }
+            }
+        }
+
+        [TestMethod]
+        public void Pre_VerifyExists_SomeFilesNotExist()
+        {
+            // Arrange
+            var filePaths = new List<string>
+            {
+                Path.GetTempFileName(),
+                "file2.mp4",
+                "file3.mp4"
+            };  
+            var argument = new MultiInputArgument(true, filePaths);
+            try
+            {
+                // Act & Assert
+                Assert.ThrowsException<FileNotFoundException>(() => argument.Pre());
+            }
+            finally
+            {
+                // Cleanup
+                File.Delete(filePaths[0]);
+            }
+        }
+
+        [TestMethod]
+        public void Pre_VerifyExists_NoFilesExist()
+        {
+            // Arrange
+            var filePaths = new List<string>
+            {
+                "file1.mp4",
+                "file2.mp4",
+                "file3.mp4"
+            };
+            var argument = new MultiInputArgument(true, filePaths);
+            // Act & Assert
+            Assert.ThrowsException<FileNotFoundException>(() => argument.Pre());
+        }
     }
 }

FFMpegCore/FFMpeg/Arguments/MultiInputArgument.cs

@@ -0,0 +1,47 @@
+namespace FFMpegCore.Arguments
+{
+    /// <summary>
+    /// Represents input parameters for multiple files
+    /// </summary>
+    public class MultiInputArgument : IInputArgument
+    {
+        public readonly bool VerifyExists;
+        public readonly IEnumerable<string> FilePaths;
+
+        public MultiInputArgument(bool verifyExists, IEnumerable<string> filePaths)
+        {
+            VerifyExists = verifyExists;
+            FilePaths = filePaths;
+        }
+
+        public MultiInputArgument(IEnumerable<string> filePaths, bool verifyExists) : this(verifyExists, filePaths) { }
+
+        public void Pre()
+        {
+            if (VerifyExists)
+            {
+                var missingFiles = new List<string>();
+                foreach (var filePath in FilePaths)
+                {
+                    if (!File.Exists(filePath))
+                    {
+                        missingFiles.Add(filePath);
+                    }
+                }
+
+                if (missingFiles.Any())
+                {
+                    throw new FileNotFoundException($"The following input files were not found: {string.Join(", ", missingFiles)}");
+                }
+            }
+        }
+
+        public Task During(CancellationToken cancellationToken = default) => Task.CompletedTask;
+        public void Post() { }
+
+        /// <summary>
+        /// Generates a combined input argument text for all file paths
+        /// </summary>
+        public string Text => string.Join(" ", FilePaths.Select(filePath => $"-i \"{filePath}\""));
+    }
+}

FFMpegCore/FFMpeg/FFMpegArguments.cs

@@ -21,6 +21,7 @@ private string GetText()
         public static FFMpegArguments FromConcatInput(IEnumerable<string> filePaths, Action<FFMpegArgumentOptions>? addArguments = null) => new FFMpegArguments().WithInput(new ConcatArgument(filePaths), addArguments);
         public static FFMpegArguments FromDemuxConcatInput(IEnumerable<string> filePaths, Action<FFMpegArgumentOptions>? addArguments = null) => new FFMpegArguments().WithInput(new DemuxConcatArgument(filePaths), addArguments);
         public static FFMpegArguments FromFileInput(string filePath, bool verifyExists = true, Action<FFMpegArgumentOptions>? addArguments = null) => new FFMpegArguments().WithInput(new InputArgument(verifyExists, filePath), addArguments);
+        public static FFMpegArguments FromFileInput(IEnumerable<string> filePath, bool verifyExists = true, Action<FFMpegArgumentOptions>? addArguments = null) => new FFMpegArguments().WithInput(new MultiInputArgument(verifyExists, filePath), addArguments);
         public static FFMpegArguments FromFileInput(FileInfo fileInfo, Action<FFMpegArgumentOptions>? addArguments = null) => new FFMpegArguments().WithInput(new InputArgument(fileInfo.FullName, false), addArguments);
         public static FFMpegArguments FromUrlInput(Uri uri, Action<FFMpegArgumentOptions>? addArguments = null) => new FFMpegArguments().WithInput(new InputArgument(uri.AbsoluteUri, false), addArguments);
         public static FFMpegArguments FromDeviceInput(string device, Action<FFMpegArgumentOptions>? addArguments = null) => new FFMpegArguments().WithInput(new InputDeviceArgument(device), addArguments);
@@ -35,6 +36,7 @@ public FFMpegArguments WithGlobalOptions(Action<FFMpegGlobalArguments> configure
         public FFMpegArguments AddConcatInput(IEnumerable<string> filePaths, Action<FFMpegArgumentOptions>? addArguments = null) => WithInput(new ConcatArgument(filePaths), addArguments);
         public FFMpegArguments AddDemuxConcatInput(IEnumerable<string> filePaths, Action<FFMpegArgumentOptions>? addArguments = null) => WithInput(new DemuxConcatArgument(filePaths), addArguments);
         public FFMpegArguments AddFileInput(string filePath, bool verifyExists = true, Action<FFMpegArgumentOptions>? addArguments = null) => WithInput(new InputArgument(verifyExists, filePath), addArguments);
+        public FFMpegArguments AddFileInput(IEnumerable<string> filePath, bool verifyExists = true, Action<FFMpegArgumentOptions>? addArguments = null) => WithInput(new MultiInputArgument(verifyExists, filePath), addArguments);
         public FFMpegArguments AddFileInput(FileInfo fileInfo, Action<FFMpegArgumentOptions>? addArguments = null) => WithInput(new InputArgument(fileInfo.FullName, false), addArguments);
         public FFMpegArguments AddUrlInput(Uri uri, Action<FFMpegArgumentOptions>? addArguments = null) => WithInput(new InputArgument(uri.AbsoluteUri, false), addArguments);
         public FFMpegArguments AddDeviceInput(string device, Action<FFMpegArgumentOptions>? addArguments = null) => WithInput(new InputDeviceArgument(device), addArguments);

FFMpegCore/FFMpegCore.csproj

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <IsPackable>true</IsPackable>
     <Description>A .NET Standard FFMpeg/FFProbe wrapper for easily integrating media analysis and conversion into your .NET applications</Description>
-    <PackageVersion>5.1.0</PackageVersion>
+    <PackageVersion>5.1.1</PackageVersion>
     <PackageOutputPath>../nupkg</PackageOutputPath>
     <PackageReleaseNotes>
     </PackageReleaseNotes>
@@ -20,5 +20,7 @@
     <PackageReference Include="Instances" Version="3.0.0" />
     <PackageReference Include="System.Text.Json" Version="7.0.3" />
   </ItemGroup>
+  
+  
 
 </Project>