move FFmpeg sources to FFmpeg service
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zeromus
parent
72ad0d8d74
commit
dd01c26c92
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@ -6,7 +6,7 @@ using System.Text;
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using System.Text.RegularExpressions;
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using System.IO;
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namespace BizHawk.Emulation.DiscSystem
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namespace BizHawk.Common
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{
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public class FFMpeg
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{
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@ -106,61 +106,4 @@ namespace BizHawk.Emulation.DiscSystem
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}
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}
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internal class AudioDecoder
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{
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[Serializable]
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public class AudioDecoder_Exception : Exception
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{
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public AudioDecoder_Exception(string message)
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: base(message)
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{
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}
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}
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public AudioDecoder()
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{
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}
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private bool CheckForAudio(string path)
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{
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FFMpeg ffmpeg = new FFMpeg();
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var qa = ffmpeg.QueryAudio(path);
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return qa.IsAudio;
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}
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/// <summary>
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/// finds audio at a path similar to the provided path (i.e. finds Track01.mp3 for Track01.wav)
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/// TODO - isnt this redundant with CueFileResolver?
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/// </summary>
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private string FindAudio(string audioPath)
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{
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string basePath = Path.GetFileNameWithoutExtension(audioPath);
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//look for potential candidates
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var di = new DirectoryInfo(Path.GetDirectoryName(audioPath));
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var fis = di.GetFiles();
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//first, look for the file type we actually asked for
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foreach (var fi in fis)
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{
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if (fi.FullName.ToUpper() == audioPath.ToUpper())
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if (CheckForAudio(fi.FullName))
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return fi.FullName;
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}
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//then look for any other type
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foreach (var fi in fis)
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{
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if (Path.GetFileNameWithoutExtension(fi.FullName).ToUpper() == basePath.ToUpper())
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{
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if (CheckForAudio(fi.FullName))
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{
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return fi.FullName;
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}
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}
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}
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return null;
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}
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/// <exception cref="AudioDecoder_Exception">could not find source audio for <paramref name="audioPath"/></exception>
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public byte[] AcquireWaveData(string audioPath) => new FFMpeg()
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.DecodeAudio(FindAudio(audioPath) ?? throw new AudioDecoder_Exception($"Could not find source audio for: {Path.GetFileName(audioPath)}"));
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}
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}
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@ -8,104 +8,6 @@ using System.IO;
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namespace BizHawk.Emulation.DiscSystem
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{
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public class FFMpeg
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{
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public static string FFMpegPath;
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public class AudioQueryResult
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{
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public bool IsAudio;
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}
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private static string[] Escape(IEnumerable<string> args)
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{
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return args.Select(s => s.Contains(" ") ? $"\"{s}\"" : s).ToArray();
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}
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//note: accepts . or : in the stream stream/substream separator in the stream ID format, since that changed at some point in FFMPEG history
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//if someone has a better idea how to make the determination of whether an audio stream is available, I'm all ears
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private static readonly Regex rxHasAudio = new Regex(@"Stream \#(\d*(\.|\:)\d*)\: Audio", RegexOptions.Compiled);
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public AudioQueryResult QueryAudio(string path)
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{
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var ret = new AudioQueryResult();
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string stdout = Run("-i", path).Text;
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ret.IsAudio = rxHasAudio.Matches(stdout).Count > 0;
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return ret;
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}
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/// <summary>
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/// queries whether this service is available. if ffmpeg is broken or missing, then you can handle it gracefully
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/// </summary>
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public bool QueryServiceAvailable()
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{
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try
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{
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string stdout = Run("-version").Text;
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if (stdout.Contains("ffmpeg version")) return true;
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}
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catch
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{
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}
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return false;
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}
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public struct RunResults
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{
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public string Text;
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public int ExitCode;
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}
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public RunResults Run(params string[] args)
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{
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args = Escape(args);
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StringBuilder sbCmdline = new StringBuilder();
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for (int i = 0; i < args.Length; i++)
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{
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sbCmdline.Append(args[i]);
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if (i != args.Length - 1) sbCmdline.Append(' ');
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}
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ProcessStartInfo oInfo = new ProcessStartInfo(FFMpegPath, sbCmdline.ToString())
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{
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UseShellExecute = false,
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CreateNoWindow = true,
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RedirectStandardOutput = true,
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RedirectStandardError = true
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};
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Process proc = Process.Start(oInfo);
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string result = proc.StandardOutput.ReadToEnd();
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result += proc.StandardError.ReadToEnd();
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proc.WaitForExit();
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return new RunResults
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{
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ExitCode = proc.ExitCode,
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Text = result
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};
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}
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/// <exception cref="InvalidOperationException">FFmpeg exited with non-zero exit code or produced no output</exception>
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public byte[] DecodeAudio(string path)
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{
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string tempfile = Path.GetTempFileName();
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try
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{
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var runResults = Run("-i", path, "-xerror", "-f", "wav", "-ar", "44100", "-ac", "2", "-acodec", "pcm_s16le", "-y", tempfile);
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if(runResults.ExitCode != 0)
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throw new InvalidOperationException($"Failure running ffmpeg for audio decode. here was its output:\r\n{runResults.Text}");
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byte[] ret = File.ReadAllBytes(tempfile);
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if (ret.Length == 0)
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throw new InvalidOperationException($"Failure running ffmpeg for audio decode. here was its output:\r\n{runResults.Text}");
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return ret;
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}
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finally
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{
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File.Delete(tempfile);
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}
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}
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}
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internal class AudioDecoder
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{
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[Serializable]
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