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Check ffmpeg/ffprobe availability #75

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This commit is contained in:
Malte Rosenbjerg 2020-10-24 22:18:16 +02:00
parent 3d50530c74
commit 0136d49edf
4 changed files with 29 additions and 5 deletions
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1
FFMpegCore/FFMpeg/FFMpegArgumentProcessor.cs
View file

@ -126,6 +126,7 @@ await Task.WhenAll(instance.FinishedRunning().ContinueWith(t =>
private Instance PrepareInstance(out CancellationTokenSource cancellationTokenSource)
{
FFMpegHelper.RootExceptionCheck(FFMpegOptions.Options.RootDirectory);
FFMpegHelper.VerifyFFMpegExists();
var instance = new Instance(FFMpegOptions.Options.FFmpegBinary(), _ffMpegArguments.Text);
instance.DataReceived += OutputData;
cancellationTokenSource = new CancellationTokenSource();

1
FFMpegCore/FFProbe/FFProbe.cs
View file

@ -87,6 +87,7 @@ private static Instance PrepareInstance(string filePath, int outputCapacity)
{
FFProbeHelper.RootExceptionCheck(FFMpegOptions.Options.RootDirectory);
var ffprobe = FFMpegOptions.Options.FFProbeBinary();
FFProbeHelper.VerifyFFProbeExists();
var arguments = $"-print_format json -show_format -sexagesimal -show_streams \"{filePath}\"";
var instance = new Instance(ffprobe, arguments) {DataBufferCapacity = outputCapacity};
return instance;

15
FFMpegCore/Helpers/FFMpegHelper.cs
View file

@ -2,11 +2,14 @@
using System.Drawing;
using System.IO;
using FFMpegCore.Exceptions;
using Instances;
namespace FFMpegCore.Helpers
{
public static class FFMpegHelper
{
private static bool _ffmpegVerified;
public static void ConversionSizeExceptionCheck(Image image)
{
ConversionSizeExceptionCheck(image.Size);
@ -32,11 +35,19 @@ public static void ExtensionExceptionCheck(string filename, string extension)
$"Invalid output file. File extension should be '{extension}' required.");
}
public static void RootExceptionCheck(string root)
public static void RootExceptionCheck()
{
if (root == null)
if (FFMpegOptions.Options.RootDirectory == null)
throw new FFMpegException(FFMpegExceptionType.Dependency,
"FFMpeg root is not configured in app config. Missing key 'ffmpegRoot'.");
}
public static void VerifyFFMpegExists()
{
if (_ffmpegVerified) return;
var (exitCode, _) = Instance.Finish(FFMpegOptions.Options.FFmpegBinary(), "-version");
_ffmpegVerified = exitCode == 0;
if (!_ffmpegVerified) throw new FFMpegException(FFMpegExceptionType.Operation, "ffmpeg was not found on your system");
}
}
}

17
FFMpegCore/Helpers/FFProbeHelper.cs
View file

@ -1,9 +1,12 @@
using FFMpegCore.Exceptions;
using Instances;
namespace FFMpegCore.Helpers
{
public class FFProbeHelper
{
private static bool _ffprobeVerified;
public static int Gcd(int first, int second)
{
while (first != 0 && second != 0)
@ -15,12 +18,20 @@ public static int Gcd(int first, int second)
return first == 0 ? second : first;
}
public static void RootExceptionCheck(string root)
public static void RootExceptionCheck()
{
if (root == null)
if (FFMpegOptions.Options.RootDirectory == null)
throw new FFMpegException(FFMpegExceptionType.Dependency,
"FFProbe root is not configured in app config. Missing key 'ffmpegRoot'.");
}
public static void VerifyFFProbeExists()
{
if (_ffprobeVerified) return;
var (exitCode, _) = Instance.Finish(FFMpegOptions.Options.FFProbeBinary(), "-version");
_ffprobeVerified = exitCode == 0;
if (!_ffprobeVerified) throw new FFMpegException(FFMpegExceptionType.Operation, "ffprobe was not found on your system");
}
}
}