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don't crash if we're out of range, and provide a (usually accurate) Duration reading

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This commit is contained in:
Michael Becker 2020-12-04 23:35:25 -05:00
parent 779e884e97
commit 486163f46b
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GPG Key ID: 506F54899E2BFED7
1 changed files with 11 additions and 0 deletions
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11
Plugins/UniversalEditor.Plugins.Multimedia/ObjectModels/Multimedia/Audio/Waveform/WaveformAudioObjectModel.cs
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@ -89,6 +89,7 @@ namespace UniversalEditor.ObjectModels.Multimedia.Audio.Waveform
}
}
public WaveformAudioSamples RawSamples { get; set; } = null;
public double Duration { get { return (double)RawSamples.Length / (Header.BitsPerSample / 8) / Header.SampleRate; } }
protected internal virtual void OnSampleRequest(WaveformAudioSampleRequestEventArgs e)
{
@ -99,6 +100,16 @@ namespace UniversalEditor.ObjectModels.Multimedia.Audio.Waveform
short[] samples = new short[e.Length];
for (int i = e.Offset; i < e.Offset + e.Length; i++)
{
if (i >= mvarRawData.Length)
{
Console.WriteLine("wave: requested {0} raw data outside of range {1}", i, mvarRawData.Length);
continue;
}
else if (i - e.Offset >= samples.Length)
{
Console.WriteLine("wave: requested {0} samples outside of range {1}", i - e.Offset, samples.Length);
continue;
}
samples[i - e.Offset] = (short)mvarRawData[i];
}
e.Samples = samples;