Draw in a Texture a Waveform From Audioclip Before Play

Hi Guys! Im working on something like a Video Editor, and y want to show the Waveform when an Audio is put in the time line. Im using the new UI System, works Perfectly, but now i have an issue. I dont know how works GETDATA() function of the AudioClip Class I was thinking something like... I can Draw a Texture(For example 100*2500(audio lenght)) and with the array from GETDATA() I could draw a line (if the array item is 0.8) draw a line in the center with a Height of 80px. But I dont know how to use GETDATA. Returned me an Array so long, and i cant handle it. Here is an example code:

 void WaveForm(AudioClip aClip, int width){
         Texture2D tex;
         tex = new Texture2D (width,170);
         float[] clipData = new float[aClip.samples];
         aClip.GetData (clipData, 0);
         Color[] colors = new Color[]{Color.black, Color.white};
         for (int i = 0; i < clipData.Length; i++) {
             tex.SetPixels(i, 0, 1, clipData[i, colors]);
         }
     }

This isnt a TEST Code, is an example of the idea. If anyone have an idea, please tell me, or another method to draw in a Texture, or a Sprite a Waveform ofan Audioclip before play it.

Thanks!