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https://github.com/wasabeef/glide-transformations.git
synced 2025-06-08 23:44:04 +08:00
fix: Blur transformation not working
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wasabeef
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d474911010
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a0e4705452
@ -24,7 +24,6 @@ import com.bumptech.glide.load.resource.bitmap.BitmapResource;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.graphics.Canvas;
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import android.os.Build;
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import android.support.v8.renderscript.Allocation;
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import android.support.v8.renderscript.RenderScript;
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import android.support.v8.renderscript.ScriptIntrinsicBlur;
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@ -51,254 +50,23 @@ public class BlurTransformation implements Transformation<Bitmap> {
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@Override
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public Resource<Bitmap> transform(Resource<Bitmap> resource, int outWidth, int outHeight) {
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Bitmap source = resource.get();
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Bitmap outBitmap = Bitmap.createBitmap(source.getWidth(), source.getHeight(),
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Bitmap.Config.ARGB_8888);
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Canvas canvas = new Canvas(outBitmap);
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canvas.drawBitmap(source, 0, 0, null);
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if (Build.VERSION.SDK_INT > 16) {
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Bitmap outBitmap = Bitmap.createBitmap(source.getWidth(), source.getHeight(),
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Bitmap.Config.ARGB_8888);
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Canvas canvas = new Canvas(outBitmap);
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canvas.drawBitmap(source, 0, 0, null);
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RenderScript rs = RenderScript.create(mContext);
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Allocation overlayAlloc = Allocation.createFromBitmap(rs, outBitmap);
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ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(rs, overlayAlloc.getElement());
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blur.setInput(overlayAlloc);
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blur.setRadius(mRadius);
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blur.forEach(overlayAlloc);
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overlayAlloc.copyTo(outBitmap);
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RenderScript rs = RenderScript.create(mContext);
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Allocation overlayAlloc = Allocation.createFromBitmap(rs, outBitmap);
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ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(rs, overlayAlloc.getElement());
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blur.setInput(overlayAlloc);
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blur.setRadius(mRadius);
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blur.forEach(overlayAlloc);
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overlayAlloc.copyTo(outBitmap);
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source.recycle();
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rs.destroy();
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return BitmapResource.obtain(outBitmap, mBitmapPool);
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}
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// Stack Blur v1.0 from
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// http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html
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//
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// Java Author: Mario Klingemann <mario at quasimondo.com>
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// http://incubator.quasimondo.com
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// created Feburary 29, 2004
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// Android port : Yahel Bouaziz <yahel at kayenko.com>
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// http://www.kayenko.com
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// ported april 5th, 2012
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// This is a compromise between Gaussian Blur and Box blur
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// It creates much better looking blurs than Box Blur, but is
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// 7x faster than my Gaussian Blur implementation.
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//
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// I called it Stack Blur because this describes best how this
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// filter works internally: it creates a kind of moving stack
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// of colors whilst scanning through the image. Thereby it
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// just has to add one new block of color to the right side
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// of the stack and remove the leftmost color. The remaining
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// colors on the topmost layer of the stack are either added on
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// or reduced by one, depending on if they are on the right or
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// on the left side of the stack.
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//
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// If you are using this algorithm in your code please add
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// the following line:
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//
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// Stack Blur Algorithm by Mario Klingemann <mario@quasimondo.com>
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Bitmap bitmap = source.copy(source.getConfig(), true);
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if (mRadius < 1) {
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return (null);
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}
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int w = bitmap.getWidth();
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int h = bitmap.getHeight();
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int[] pix = new int[w * h];
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bitmap.getPixels(pix, 0, w, 0, 0, w, h);
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int wm = w - 1;
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int hm = h - 1;
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int wh = w * h;
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int div = mRadius + mRadius + 1;
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int r[] = new int[wh];
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int g[] = new int[wh];
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int b[] = new int[wh];
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int rsum, gsum, bsum, x, y, i, p, yp, yi, yw;
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int vmin[] = new int[Math.max(w, h)];
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int divsum = (div + 1) >> 1;
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divsum *= divsum;
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int dv[] = new int[256 * divsum];
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for (i = 0; i < 256 * divsum; i++) {
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dv[i] = (i / divsum);
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}
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yw = yi = 0;
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int[][] stack = new int[div][3];
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int stackpointer;
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int stackstart;
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int[] sir;
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int rbs;
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int r1 = mRadius + 1;
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int routsum, goutsum, boutsum;
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int rinsum, ginsum, binsum;
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for (y = 0; y < h; y++) {
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rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
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for (i = -mRadius; i <= mRadius; i++) {
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p = pix[yi + Math.min(wm, Math.max(i, 0))];
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sir = stack[i + mRadius];
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sir[0] = (p & 0xff0000) >> 16;
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sir[1] = (p & 0x00ff00) >> 8;
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sir[2] = (p & 0x0000ff);
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rbs = r1 - Math.abs(i);
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rsum += sir[0] * rbs;
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gsum += sir[1] * rbs;
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bsum += sir[2] * rbs;
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if (i > 0) {
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rinsum += sir[0];
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ginsum += sir[1];
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binsum += sir[2];
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} else {
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routsum += sir[0];
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goutsum += sir[1];
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boutsum += sir[2];
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}
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}
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stackpointer = mRadius;
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for (x = 0; x < w; x++) {
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r[yi] = dv[rsum];
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g[yi] = dv[gsum];
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b[yi] = dv[bsum];
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rsum -= routsum;
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gsum -= goutsum;
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bsum -= boutsum;
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stackstart = stackpointer - mRadius + div;
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sir = stack[stackstart % div];
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routsum -= sir[0];
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goutsum -= sir[1];
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boutsum -= sir[2];
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if (y == 0) {
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vmin[x] = Math.min(x + mRadius + 1, wm);
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}
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p = pix[yw + vmin[x]];
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sir[0] = (p & 0xff0000) >> 16;
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sir[1] = (p & 0x00ff00) >> 8;
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sir[2] = (p & 0x0000ff);
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rinsum += sir[0];
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ginsum += sir[1];
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binsum += sir[2];
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rsum += rinsum;
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gsum += ginsum;
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bsum += binsum;
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stackpointer = (stackpointer + 1) % div;
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sir = stack[(stackpointer) % div];
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routsum += sir[0];
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goutsum += sir[1];
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boutsum += sir[2];
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rinsum -= sir[0];
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ginsum -= sir[1];
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binsum -= sir[2];
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yi++;
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}
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yw += w;
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}
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for (x = 0; x < w; x++) {
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rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
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yp = -mRadius * w;
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for (i = -mRadius; i <= mRadius; i++) {
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yi = Math.max(0, yp) + x;
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sir = stack[i + mRadius];
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sir[0] = r[yi];
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sir[1] = g[yi];
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sir[2] = b[yi];
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rbs = r1 - Math.abs(i);
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rsum += r[yi] * rbs;
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gsum += g[yi] * rbs;
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bsum += b[yi] * rbs;
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if (i > 0) {
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rinsum += sir[0];
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ginsum += sir[1];
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binsum += sir[2];
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} else {
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routsum += sir[0];
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goutsum += sir[1];
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boutsum += sir[2];
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}
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if (i < hm) {
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yp += w;
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}
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}
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yi = x;
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stackpointer = mRadius;
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for (y = 0; y < h; y++) {
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// Preserve alpha channel: ( 0xff000000 & pix[yi] )
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pix[yi] = (0xff000000 & pix[yi]) | (dv[rsum] << 16) | (dv[gsum] << 8) | dv[bsum];
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rsum -= routsum;
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gsum -= goutsum;
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bsum -= boutsum;
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stackstart = stackpointer - mRadius + div;
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sir = stack[stackstart % div];
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routsum -= sir[0];
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goutsum -= sir[1];
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boutsum -= sir[2];
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if (x == 0) {
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vmin[y] = Math.min(y + r1, hm) * w;
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}
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p = x + vmin[y];
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sir[0] = r[p];
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sir[1] = g[p];
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sir[2] = b[p];
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rinsum += sir[0];
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ginsum += sir[1];
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binsum += sir[2];
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rsum += rinsum;
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gsum += ginsum;
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bsum += binsum;
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stackpointer = (stackpointer + 1) % div;
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sir = stack[stackpointer];
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routsum += sir[0];
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goutsum += sir[1];
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boutsum += sir[2];
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rinsum -= sir[0];
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ginsum -= sir[1];
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binsum -= sir[2];
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yi += w;
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}
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}
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bitmap.setPixels(pix, 0, w, 0, 0, w, h);
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source.recycle();
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rs.destroy();
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return BitmapResource.obtain(bitmap, mBitmapPool);
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return BitmapResource.obtain(outBitmap, mBitmapPool);
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}
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@Override
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