Android Open Source - android-imgpro-lib Channel Mix

From Project

Back to project page android-imgpro-lib.

License

The source code is released under:

MIT License

If you think the Android project android-imgpro-lib listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

package net.akhyar.android.imgpro.actions;
/*  ww  w.ja va  2 s. co  m*/
import net.akhyar.android.imgpro.Action;
import android.graphics.ColorMatrix;

public class ChannelMix extends Action {

  protected float[] m = new float[20];

  protected ChannelMix() {
  }

  public ChannelMix(float[] matrix) {
    this.m = matrix;
  }

  public ChannelMix(ColorMatrix matrix) {
    this.m = matrix.getArray();
  }

  @Override
  protected void adjustPixels(int[] colors) {

    int color, A1, R1, G1, B1, A2, R2, G2, B2;
    for (int x = 0; x < colors.length; x++) {
      color = colors[x];

      A1 = 0xff & (color >> 24);
      R1 = 0xff & (color >> 16);
      G1 = 0xff & (color >> 8);
      B1 = 0xff & color;

      R2 = clamp(m[0] * R1 + m[1] * G1 + m[2] * B1 + m[3] * A1 + m[4]);
      G2 = clamp(m[5] * R1 + m[6] * G1 + m[7] * B1 + m[8] * A1 + m[9]);
      B2 = clamp(m[10] * R1 + m[11] * G1 + m[12] * B1 + m[13] * A1
          + m[14]);
      A2 = clamp(m[15] * R1 + m[16] * G1 + m[17] * B1 + m[18] * A1
          + m[19]);

      colors[x] = (A2 << 24) | (R2 << 16) | (G2 << 8) | B2;
    }
  }

  public static final ChannelMix SEPIA = new ChannelMix(new float[] {
      .393f, .769f, .189f, 0, 0,
      .349f, .686f, .168f, 0, 0,
      .272f, .534f, .131f, 0, 0,
      0, 0, 0, 1, 0
  });

  public static final ChannelMix GRAYSCALE = new ChannelMix(new float[] {
      .3f, .59f, .11f, 0, 0,
      .3f, .59f, .11f, 0, 0,
      .3f, .59f, .11f, 0, 0,
      0, 0, 0, 1, 0
  });
}

Java Source Code List