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Still show waveform if video name is changed

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This commit is contained in:
Nikolaj Olsson 2018-08-23 21:39:57 +02:00
parent f79ea47d21
commit ff6e70aeba
1 changed files with 70 additions and 3 deletions
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73
libse/WaveToVisualizer.cs
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@ -334,7 +334,74 @@ namespace Nikse.SubtitleEdit.Core
public class WavePeakGenerator : IDisposable
{
public static string GetPeakWaveFileName(string videoFileName)
#region Movie Hasher - hash from OpenSubtitles: http://trac.opensubtitles.org/projects/opensubtitles/wiki/HashSourceCodes
public static string GetPeakWaveFileName(string videofileName)
{
var old = GetPeakWaveFileNameOld(videofileName);
if (File.Exists(old))
return old;
try
{
return ToHexadecimal(ComputeMovieHash(videofileName)) + ".wav";
}
catch
{
return old;
}
}
private static byte[] ComputeMovieHash(string videofileName)
{
byte[] result;
using (Stream input = new FileStream(videofileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
result = ComputeMovieHash(input);
}
return result;
}
private static byte[] ComputeMovieHash(Stream input)
{
long streamsize = input.Length;
long lhash = streamsize;
long i = 0;
var buffer = new byte[sizeof(long)];
const int c = 65536;
while (i < c / sizeof(long) && input.Read(buffer, 0, sizeof(long)) > 0)
{
i++;
lhash += BitConverter.ToInt64(buffer, 0);
}
input.Position = Math.Max(0, streamsize - c);
i = 0;
while (i < 65536 / sizeof(long) && input.Read(buffer, 0, sizeof(long)) > 0)
{
i++;
lhash += BitConverter.ToInt64(buffer, 0);
}
input.Close();
var result = BitConverter.GetBytes(lhash);
Array.Reverse(result);
return result;
}
private static string ToHexadecimal(byte[] bytes)
{
var hexBuilder = new StringBuilder();
for (int i = 0; i < bytes.Length; i++)
{
hexBuilder.Append(bytes[i].ToString("x2"));
}
return hexBuilder.ToString();
}
#endregion Movie Hasher
private static string GetPeakWaveFileNameOld(string videoFileName)
{
var dir = Configuration.WaveformsDirectory.TrimEnd(Path.DirectorySeparatorChar);
if (!Directory.Exists(dir))
@ -358,8 +425,8 @@ namespace Nikse.SubtitleEdit.Core
}
}
private Stream _stream;
private WaveHeader _header;
private readonly Stream _stream;
private readonly WaveHeader _header;
private delegate int ReadSampleDataValue(byte[] data, ref int index);