Introduce OutputFormat.Guess/All.

build/deploy-test-nuget.linq

@@ -22,9 +22,9 @@ string IncrementBuildVersion(string projFile)
 
 	string versionPrefix = (versionPrefixNode.FirstNode as XText).Value;
 	string versionSuffix = (versionSuffixNode.FirstNode as XText).Value;
-	int buildNumber = int.Parse(versionSuffix.Split('-')[1]);
+	int buildNumber = int.Parse(versionSuffix.Split('.')[1]);
 	int newBuildNumber = buildNumber + 1;
-	string newVersionSuffix = "preview-" + newBuildNumber;
+	string newVersionSuffix = "preview." + newBuildNumber;
 
 	versionSuffixNode.ReplaceNodes(newVersionSuffix);
 

src/Sdcb.FFmpeg.Tests/Formats/FormatTest.cs

@@ -0,0 +1,45 @@
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.DependencyInjection.Extensions;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+using Sdcb.FFmpeg.Common;
+using Sdcb.FFmpeg.Formats;
+using Sdcb.FFmpeg.Raw;
+using System;
+using System.IO;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Xunit;
+using Xunit.Abstractions;
+
+namespace Sdcb.FFmpeg.Tests.Formats;
+
+public class FormatTest
+{
+    private readonly ITestOutputHelper _console;
+
+    public FormatTest(ITestOutputHelper console)
+    {
+        _console = console;
+    }
+
+    [Fact]
+    public void InputFormatTest()
+    {
+        foreach (InputFormat fmt in InputFormat.All)
+        {
+            _console.WriteLine(fmt.Name);
+        }
+    }
+
+    [Fact]
+    public void OutputFormatTest()
+    {
+        foreach (OutputFormat fmt in OutputFormat.All)
+        {
+            _console.WriteLine(fmt.Name);
+        }
+    }
+}

src/Sdcb.FFmpeg/Formats/OutputFormat.cs

@@ -0,0 +1,29 @@
+using Sdcb.FFmpeg.Common;
+using Sdcb.FFmpeg.Raw;
+using System;
+using System.Collections.Generic;
+using static Sdcb.FFmpeg.Raw.ffmpeg;
+using System.Linq;
+
+namespace Sdcb.FFmpeg.Formats;
+
+public unsafe partial struct OutputFormat
+{
+    /// <summary>
+    /// Return the output format in the list of registered output formats which best matches the provided parameters, or return NULL if there is no match.
+    /// <param name="shortName">if non-NULL checks if short_name matches with the names of the registered formats</param>
+    /// <param name="fileName">if non-NULL checks if filename terminates with the extensions of the registered formats</param>
+    /// <param name="mimeType">if non-NULL checks if mime_type matches with the MIME type of the registered formats</param>
+    /// <see cref="av_guess_format(string, string, string)"/>
+    /// </summary>
+    public static OutputFormat? Guess(string? shortName = null, string? fileName = null, string? mimeType = null)
+        => FromNativeOrNull(av_guess_format(shortName, fileName, mimeType));
+
+    /// <summary>
+    /// Iterate over all registered muxers.
+    /// <see cref="av_muxer_iterate(void**)"/>
+    /// </summary>
+    public static IEnumerable<OutputFormat> All => NativeUtils
+        .EnumeratePtrIterator(ptr => (IntPtr)av_muxer_iterate((void**)ptr))
+        .Select(x => FromNative((AVOutputFormat*)x));
+}

src/Sdcb.FFmpeg/Sdcb.FFmpeg.csproj

@@ -3,7 +3,7 @@
     <PropertyGroup>
         <PackageId>Sdcb.FFmpeg</PackageId>
         <VersionPrefix>5.1.1</VersionPrefix>
-        <VersionSuffix>preview.1</VersionSuffix>
+        <VersionSuffix>preview.4</VersionSuffix>
         <LangVersion>latest</LangVersion>
         <!-- Build symbol package (.snupkg) to distribute the PDB containing Source Link -->
         <IncludeSymbols>true</IncludeSymbols>