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package com.android.camera.ui;
import com.android.camera.Util;
import android.graphics.Bitmap;
import android.opengl.GLUtils;
import javax.microedition.khronos.opengles.GL11;
import javax.microedition.khronos.opengles.GL11Ext;
abstract class BitmapTexture extends BasicTexture {
@SuppressWarnings("unused")
private static final String TAG = "Texture";
protected BitmapTexture() {
super(null, 0, STATE_UNLOADED);
}
@Override
public int getWidth() {
if (mWidth == UNSPECIFIED) getBitmap();
return mWidth;
}
@Override
public int getHeight() {
if (mWidth == UNSPECIFIED) getBitmap();
return mHeight;
}
protected abstract Bitmap getBitmap();
protected abstract void freeBitmap(Bitmap bitmap);
private void uploadToGL(GL11 gl) throws GLOutOfMemoryException {
Bitmap bitmap = getBitmap();
int glError = GL11.GL_NO_ERROR;
if (bitmap != null) {
int[] textureId = new int[1];
try {
// Define a vertically flipped crop rectangle for
// OES_draw_texture.
int width = bitmap.getWidth();
int height = bitmap.getHeight();
int[] cropRect = {0, height, width, -height};
// Upload the bitmap to a new texture.
gl.glGenTextures(1, textureId, 0);
gl.glBindTexture(GL11.GL_TEXTURE_2D, textureId[0]);
gl.glTexParameteriv(GL11.GL_TEXTURE_2D,
GL11Ext.GL_TEXTURE_CROP_RECT_OES, cropRect, 0);
gl.glTexParameteri(GL11.GL_TEXTURE_2D,
GL11.GL_TEXTURE_WRAP_S, GL11.GL_CLAMP_TO_EDGE);
gl.glTexParameteri(GL11.GL_TEXTURE_2D,
GL11.GL_TEXTURE_WRAP_T, GL11.GL_CLAMP_TO_EDGE);
gl.glTexParameterf(GL11.GL_TEXTURE_2D,
GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR);
gl.glTexParameterf(GL11.GL_TEXTURE_2D,
GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR);
int widthExt = Util.nextPowerOf2(width);
int heightExt = Util.nextPowerOf2(height);
int format = GLUtils.getInternalFormat(bitmap);
int type = GLUtils.getType(bitmap);
mTextureWidth = widthExt;
mTextureHeight = heightExt;
gl.glTexImage2D(GL11.GL_TEXTURE_2D, 0, format,
widthExt, heightExt, 0, format, type, null);
GLUtils.texSubImage2D(
GL11.GL_TEXTURE_2D, 0, 0, 0, bitmap, format, type);
} finally {
freeBitmap(bitmap);
}
if (glError == GL11.GL_OUT_OF_MEMORY) {
throw new GLOutOfMemoryException();
}
if (glError != GL11.GL_NO_ERROR) {
mId = 0;
mState = STATE_UNLOADED;
throw new RuntimeException(
"Texture upload fail, glError " + glError);
} else {
// Update texture state.
mGL = gl;
mId = textureId[0];
mState = BitmapTexture.STATE_LOADED;
}
} else {
mState = STATE_ERROR;
throw new RuntimeException("Texture load fail, no bitmap");
}
}
@Override
protected boolean bind(GLRootView root, GL11 gl) {
if (mState == BitmapTexture.STATE_UNLOADED || mGL != gl) {
mState = BitmapTexture.STATE_UNLOADED;
try {
uploadToGL(gl);
} catch (GLOutOfMemoryException e) {
root.handleLowMemory();
return false;
}
} else {
gl.glBindTexture(GL11.GL_TEXTURE_2D, getId());
}
return true;
}
}
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