protected override void OnModifications(WaveformPreview.MessageFlags cFlags)
{
bool flag = false;
if (WaveformPreview.HasFlag(cFlags, WaveformPreview.MessageFlags.TextureChanged) || WaveformPreview.HasFlag(cFlags, WaveformPreview.MessageFlags.Size) || WaveformPreview.HasFlag(cFlags, WaveformPreview.MessageFlags.Length) || WaveformPreview.HasFlag(cFlags, WaveformPreview.MessageFlags.Looping))
{
this.KillAndClearStreamers();
if (base.length <= 0.0)
{
return;
}
StreamedAudioClipPreview.ClipPreviewDetails details = new StreamedAudioClipPreview.ClipPreviewDetails(this.m_Clip, base.looping, (int)base.Size.x, base.start, base.length);
this.UploadPreview(details);
if (details.IsCandidateForStreaming())
{
flag = true;
}
}
if (!base.optimized)
{
this.KillAndClearStreamers();
flag = false;
}
else if (WaveformPreview.HasFlag(cFlags, WaveformPreview.MessageFlags.Optimization) && !flag)
{
StreamedAudioClipPreview.ClipPreviewDetails clipPreviewDetails = new StreamedAudioClipPreview.ClipPreviewDetails(this.m_Clip, base.looping, (int)base.Size.x, base.start, base.length);
if (clipPreviewDetails.IsCandidateForStreaming())
{
flag = true;
}
}
if (flag)
{
this.m_StreamedSegments = this.CalculateAndStartStreamers(base.start, base.length);
if (this.m_StreamedSegments != null && this.m_StreamedSegments.Length > 0)
{
StreamedAudioClipPreview.Segment[] streamedSegments = this.m_StreamedSegments;
for (int i = 0; i < streamedSegments.Length; i++)
{
StreamedAudioClipPreview.Segment segment = streamedSegments[i];
if (!this.m_Contexts.ContainsKey(segment.streamer))
{
this.m_Contexts.Add(segment.streamer, new StreamedAudioClipPreview.StreamingContext());
}
}
}
}
base.OnModifications(cFlags);
}
private StreamedAudioClipPreview.Segment[] CalculateAndStartStreamers(double localStart, double localLength)
{
double num = localStart;
localStart %= (double)this.m_Clip.length;
double num2 = localLength / (double)base.Size.x;
StreamedAudioClipPreview.Segment[] result;
if (!base.looping)
{
if (num > (double)this.m_Clip.length)
{
result = null;
}
else
{
double num3 = Math.Min((double)this.m_Clip.length - num, localLength);
int num4 = (int)Math.Min((double)base.Size.x, (double)base.Size.x * Math.Max(0.0, num3 / localLength));
if (num4 < 1)
{
result = null;
}
else
{
StreamedAudioClipPreview.Segment[] array = new StreamedAudioClipPreview.Segment[1];
array[0].streamer = new WaveformStreamer(this.m_Clip, num, num3, num4, new Func <WaveformStreamer, float[], int, bool>(this.OnNewWaveformData));
array[0].segmentLength = (int)base.Size.x;
array[0].textureOffset = 0;
array[0].streamingIndexOffset = 0;
result = array;
}
}
}
else
{
StreamedAudioClipPreview.Segment[] array;
if (localStart + localLength - num2 > (double)this.m_Clip.length)
{
double num5 = (double)base.Size.x / localLength;
if (localLength >= (double)this.m_Clip.length)
{
double num6 = localLength / (double)this.m_Clip.length;
WaveformStreamer streamer = new WaveformStreamer(this.m_Clip, 0.0, (double)this.m_Clip.length, (int)((double)base.Size.x / num6), new Func <WaveformStreamer, float[], int, bool>(this.OnNewWaveformData));
double num7 = (double)this.m_Clip.length - localStart;
double num8 = 0.0;
array = new StreamedAudioClipPreview.Segment[Mathf.CeilToInt((float)((localStart + localLength) / (double)this.m_Clip.length))];
for (int i = 0; i < array.Length; i++)
{
double num9 = Math.Min(num7 + num8, localLength) - num8;
array[i].streamer = streamer;
array[i].segmentLength = (int)(num9 * num5);
array[i].textureOffset = (int)(num8 * num5);
array[i].streamingIndexOffset = (int)(((double)this.m_Clip.length - num7) * num5);
num8 += num7;
num7 = (double)this.m_Clip.length;
}
}
else
{
double num10 = (double)this.m_Clip.length - localStart;
double num11 = localLength - num10;
array = new StreamedAudioClipPreview.Segment[2];
array[0].streamer = new WaveformStreamer(this.m_Clip, localStart, num10, (int)(num10 * num5), new Func <WaveformStreamer, float[], int, bool>(this.OnNewWaveformData));
array[0].segmentLength = (int)(num10 * num5);
array[0].textureOffset = 0;
array[0].streamingIndexOffset = 0;
array[1].streamer = new WaveformStreamer(this.m_Clip, 0.0, num11, (int)(num11 * num5), new Func <WaveformStreamer, float[], int, bool>(this.OnNewWaveformData));
array[1].segmentLength = (int)(num11 * num5);
array[1].textureOffset = (int)(num10 * num5);
array[1].streamingIndexOffset = 0;
}
}
else
{
array = new StreamedAudioClipPreview.Segment[1];
array[0].streamer = new WaveformStreamer(this.m_Clip, localStart, localLength, (int)base.Size.x, new Func <WaveformStreamer, float[], int, bool>(this.OnNewWaveformData));
array[0].segmentLength = (int)base.Size.x;
array[0].textureOffset = 0;
array[0].streamingIndexOffset = 0;
}
result = array;
}
return(result);
}