diff --git a/transformations/src/main/java/jp/wasabeef/glide/transformations/BlurTransformation.java b/transformations/src/main/java/jp/wasabeef/glide/transformations/BlurTransformation.java index 0948493..c98acca 100644 --- a/transformations/src/main/java/jp/wasabeef/glide/transformations/BlurTransformation.java +++ b/transformations/src/main/java/jp/wasabeef/glide/transformations/BlurTransformation.java @@ -24,7 +24,6 @@ import com.bumptech.glide.load.resource.bitmap.BitmapResource; import android.content.Context; import android.graphics.Bitmap; import android.graphics.Canvas; -import android.os.Build; import android.support.v8.renderscript.Allocation; import android.support.v8.renderscript.RenderScript; import android.support.v8.renderscript.ScriptIntrinsicBlur; @@ -51,254 +50,23 @@ public class BlurTransformation implements Transformation { @Override public Resource transform(Resource resource, int outWidth, int outHeight) { Bitmap source = resource.get(); + Bitmap outBitmap = Bitmap.createBitmap(source.getWidth(), source.getHeight(), + Bitmap.Config.ARGB_8888); + Canvas canvas = new Canvas(outBitmap); + canvas.drawBitmap(source, 0, 0, null); - if (Build.VERSION.SDK_INT > 16) { - Bitmap outBitmap = Bitmap.createBitmap(source.getWidth(), source.getHeight(), - Bitmap.Config.ARGB_8888); - Canvas canvas = new Canvas(outBitmap); - canvas.drawBitmap(source, 0, 0, null); + RenderScript rs = RenderScript.create(mContext); + Allocation overlayAlloc = Allocation.createFromBitmap(rs, outBitmap); + ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(rs, overlayAlloc.getElement()); + blur.setInput(overlayAlloc); + blur.setRadius(mRadius); + blur.forEach(overlayAlloc); + overlayAlloc.copyTo(outBitmap); - RenderScript rs = RenderScript.create(mContext); - Allocation overlayAlloc = Allocation.createFromBitmap(rs, outBitmap); - ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(rs, overlayAlloc.getElement()); - blur.setInput(overlayAlloc); - blur.setRadius(mRadius); - blur.forEach(overlayAlloc); - overlayAlloc.copyTo(outBitmap); - - source.recycle(); - rs.destroy(); - - return BitmapResource.obtain(outBitmap, mBitmapPool); - } - - // Stack Blur v1.0 from - // http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html - // - // Java Author: Mario Klingemann - // http://incubator.quasimondo.com - // created Feburary 29, 2004 - // Android port : Yahel Bouaziz - // http://www.kayenko.com - // ported april 5th, 2012 - - // This is a compromise between Gaussian Blur and Box blur - // It creates much better looking blurs than Box Blur, but is - // 7x faster than my Gaussian Blur implementation. - // - // I called it Stack Blur because this describes best how this - // filter works internally: it creates a kind of moving stack - // of colors whilst scanning through the image. Thereby it - // just has to add one new block of color to the right side - // of the stack and remove the leftmost color. The remaining - // colors on the topmost layer of the stack are either added on - // or reduced by one, depending on if they are on the right or - // on the left side of the stack. - // - // If you are using this algorithm in your code please add - // the following line: - // - // Stack Blur Algorithm by Mario Klingemann - - Bitmap bitmap = source.copy(source.getConfig(), true); - - if (mRadius < 1) { - return (null); - } - - int w = bitmap.getWidth(); - int h = bitmap.getHeight(); - - int[] pix = new int[w * h]; - bitmap.getPixels(pix, 0, w, 0, 0, w, h); - - int wm = w - 1; - int hm = h - 1; - int wh = w * h; - int div = mRadius + mRadius + 1; - - int r[] = new int[wh]; - int g[] = new int[wh]; - int b[] = new int[wh]; - int rsum, gsum, bsum, x, y, i, p, yp, yi, yw; - int vmin[] = new int[Math.max(w, h)]; - - int divsum = (div + 1) >> 1; - divsum *= divsum; - int dv[] = new int[256 * divsum]; - for (i = 0; i < 256 * divsum; i++) { - dv[i] = (i / divsum); - } - - yw = yi = 0; - - int[][] stack = new int[div][3]; - int stackpointer; - int stackstart; - int[] sir; - int rbs; - int r1 = mRadius + 1; - int routsum, goutsum, boutsum; - int rinsum, ginsum, binsum; - - for (y = 0; y < h; y++) { - rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0; - for (i = -mRadius; i <= mRadius; i++) { - p = pix[yi + Math.min(wm, Math.max(i, 0))]; - sir = stack[i + mRadius]; - sir[0] = (p & 0xff0000) >> 16; - sir[1] = (p & 0x00ff00) >> 8; - sir[2] = (p & 0x0000ff); - rbs = r1 - Math.abs(i); - rsum += sir[0] * rbs; - gsum += sir[1] * rbs; - bsum += sir[2] * rbs; - if (i > 0) { - rinsum += sir[0]; - ginsum += sir[1]; - binsum += sir[2]; - } else { - routsum += sir[0]; - goutsum += sir[1]; - boutsum += sir[2]; - } - } - stackpointer = mRadius; - - for (x = 0; x < w; x++) { - - r[yi] = dv[rsum]; - g[yi] = dv[gsum]; - b[yi] = dv[bsum]; - - rsum -= routsum; - gsum -= goutsum; - bsum -= boutsum; - - stackstart = stackpointer - mRadius + div; - sir = stack[stackstart % div]; - - routsum -= sir[0]; - goutsum -= sir[1]; - boutsum -= sir[2]; - - if (y == 0) { - vmin[x] = Math.min(x + mRadius + 1, wm); - } - p = pix[yw + vmin[x]]; - - sir[0] = (p & 0xff0000) >> 16; - sir[1] = (p & 0x00ff00) >> 8; - sir[2] = (p & 0x0000ff); - - rinsum += sir[0]; - ginsum += sir[1]; - binsum += sir[2]; - - rsum += rinsum; - gsum += ginsum; - bsum += binsum; - - stackpointer = (stackpointer + 1) % div; - sir = stack[(stackpointer) % div]; - - routsum += sir[0]; - goutsum += sir[1]; - boutsum += sir[2]; - - rinsum -= sir[0]; - ginsum -= sir[1]; - binsum -= sir[2]; - - yi++; - } - yw += w; - } - for (x = 0; x < w; x++) { - rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0; - yp = -mRadius * w; - for (i = -mRadius; i <= mRadius; i++) { - yi = Math.max(0, yp) + x; - - sir = stack[i + mRadius]; - - sir[0] = r[yi]; - sir[1] = g[yi]; - sir[2] = b[yi]; - - rbs = r1 - Math.abs(i); - - rsum += r[yi] * rbs; - gsum += g[yi] * rbs; - bsum += b[yi] * rbs; - - if (i > 0) { - rinsum += sir[0]; - ginsum += sir[1]; - binsum += sir[2]; - } else { - routsum += sir[0]; - goutsum += sir[1]; - boutsum += sir[2]; - } - - if (i < hm) { - yp += w; - } - } - yi = x; - stackpointer = mRadius; - for (y = 0; y < h; y++) { - // Preserve alpha channel: ( 0xff000000 & pix[yi] ) - pix[yi] = (0xff000000 & pix[yi]) | (dv[rsum] << 16) | (dv[gsum] << 8) | dv[bsum]; - - rsum -= routsum; - gsum -= goutsum; - bsum -= boutsum; - - stackstart = stackpointer - mRadius + div; - sir = stack[stackstart % div]; - - routsum -= sir[0]; - goutsum -= sir[1]; - boutsum -= sir[2]; - - if (x == 0) { - vmin[y] = Math.min(y + r1, hm) * w; - } - p = x + vmin[y]; - - sir[0] = r[p]; - sir[1] = g[p]; - sir[2] = b[p]; - - rinsum += sir[0]; - ginsum += sir[1]; - binsum += sir[2]; - - rsum += rinsum; - gsum += ginsum; - bsum += binsum; - - stackpointer = (stackpointer + 1) % div; - sir = stack[stackpointer]; - - routsum += sir[0]; - goutsum += sir[1]; - boutsum += sir[2]; - - rinsum -= sir[0]; - ginsum -= sir[1]; - binsum -= sir[2]; - - yi += w; - } - } - - bitmap.setPixels(pix, 0, w, 0, 0, w, h); source.recycle(); + rs.destroy(); - return BitmapResource.obtain(bitmap, mBitmapPool); + return BitmapResource.obtain(outBitmap, mBitmapPool); } @Override