Android Open Source - glvideoplayer-android Texture Factory

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Back to project page glvideoplayer-android.

License

The source code is released under:

Apache License

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Java Source Code

package net.binzume.android.glvideoplayer;
/*w ww.j  a v a  2 s  . c o  m*/
import javax.microedition.khronos.opengles.GL10;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.opengl.GLES20;
import android.opengl.GLUtils;

public class TextureFactory {

  /**
   * 
   * @param gl_
   *            GLES1.x????????????????????GLES2.0????????????????
   * @param bitmap
   * @return
   */
  public static Texture createFromBitmap(GL10 gl_, Bitmap bitmap) {

    int[] textureID = new int[1];
    GLES20.glGenTextures(1, textureID, 0);
    int textureNo = textureID[0];
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(GL10.GL_TEXTURE_2D, textureNo);
    GLES20.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_NEAREST);
    GLES20.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_NEAREST);

    float bmpSize = Math.max(bitmap.getWidth(), bitmap.getHeight());
    final float texSize;
    if (bmpSize <= 256) {
      texSize = 256.0f;
    } else if (bmpSize <= 512) {
      texSize = 512.0f;
    } else {
      texSize = 1024.0f;
    }

    Matrix matrix = new Matrix();
    matrix.postScale(texSize / bitmap.getWidth(), texSize / bitmap.getHeight());
    Bitmap bmp = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);

    GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bmp, 0);
    bmp.recycle();

    return new Texture(textureNo, bitmap.getWidth(), bitmap.getHeight());
  }

  public static Texture createFromResource(Context context, int resId) {
    return createFromBitmap(null, BitmapFactory.decodeResource(context.getResources(), resId));
  }
}

Java Source Code List