使用Renderscript的android模糊问题
我使用以下代码为imageview构建模糊背景使用Renderscript的android模糊问题,android,renderscript,android-renderscript,Android,Renderscript,Android Renderscript,我使用以下代码为imageview构建模糊背景 public class BlurBuilder { private static final float BITMAP_SCALE = 0.2f; private static final float BLUR_RADIUS = 25f; public static Bitmap blur(Context context, Bitmap image) { int width = Math.round(im
public class BlurBuilder {
private static final float BITMAP_SCALE = 0.2f;
private static final float BLUR_RADIUS = 25f;
public static Bitmap blur(Context context, Bitmap image) {
int width = Math.round(image.getWidth() * BITMAP_SCALE);
int height = Math.round(image.getHeight() * BITMAP_SCALE);
Bitmap inputBitmap = Bitmap.createScaledBitmap(image, width, height, false);
Bitmap outputBitmap = Bitmap.createBitmap(inputBitmap);
RenderScript rs = RenderScript.create(context);
ScriptIntrinsicBlur theIntrinsic = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
Allocation tmpIn = Allocation.createFromBitmap(rs, inputBitmap);
Allocation tmpOut = Allocation.createFromBitmap(rs, outputBitmap);
theIntrinsic.setRadius(BLUR_RADIUS);
theIntrinsic.setInput(tmpIn);
theIntrinsic.forEach(tmpOut);
tmpOut.copyTo(outputBitmap);
return outputBitmap;
}
}
Blur在大多数情况下都很好,但随着时间的推移会变得很糟糕,最终我的应用程序在没有任何崩溃日志的情况下崩溃。在emulator上运行时,经过严格测试后,我看到以下错误:
09-01 15:05:03.230 4624-9758/? E/RenderScript: rsAssert failed: ret == bytes || mShutdown, in frameworks/rs/rsFifoSocket.cpp at 83
09-01 15:05:03.238 4624-9781/? E/RenderScript: rsAssert failed: ret == bytes || mShutdown, in frameworks/rs/rsFifoSocket.cpp at 83
09-01 15:05:03.242 4624-10128/? E/RenderScript: rsAssert failed: ret == bytes || mShutdown, in frameworks/rs/rsFifoSocket.cpp at 83
09-01 15:05:03.242 4624-9610/? E/RenderScript: rsAssert failed: ret == bytes || mShutdown, in frameworks/rs/rsFifoSocket.cpp at 83
09-01 15:05:03.242 4624-9781/? E/RenderScript: rsAssert failed: ret == bytes || mShutdown, in frameworks/rs/rsFifoSocket.cpp at 83
09-01 15:05:03.250 4624-9767/? E/RenderScript: rsAssert failed: ret == bytes || mShutdown, in frameworks/rs/rsFifoSocket.cpp at 83
09-01 15:05:03.254 4624-9758/? E/RenderScript: rsAssert failed: ret == bytes || mShutdown, in frameworks/rs/rsFifoSocket.cpp at 83
... (same error - many more times and then crash)
在这方面,我有以下疑问:
android.support.v8.renderscript.Allocation或android.renderscript`包导入依赖项吗
我可以在不使用renderscript库的情况下实现模糊效果吗
在花了一天多的时间后,我发现:
应用程序正在崩溃,因为Renderscript库引发了异常。这通常发生在处理能力较低的设备中。此异常不是Java异常,无法捕获
使用以下代码作为发出模糊的另一种方式(不使用renderscript库):
公共静态位图快速模糊(位图){
int半径=(int)模糊半径;
int width=Math.round(sentBitmap.getWidth()*位图大小);
int height=Math.round(sentBitmap.getHeight()*位图大小);
sentBitmap=Bitmap.createScaledBitmap(sentBitmap,宽度,高度,false);
位图Bitmap=sentBitmap.copy(sentBitmap.getConfig(),true);
如果(半径<1){
返回(空);
}
int w=bitmap.getWidth();
int h=bitmap.getHeight();
int[]pix=新int[w*h];
Log.e(“pix”,w+“”+h+“”+pix.length);
获取像素(像素,0,w,0,0,w,h);
int-wm=w-1;
int hm=h-1;
int-wh=w*h;
int div=半径+半径+1;
int r[]=新的int[wh];
int g[]=新的int[wh];
int b[]=新int[wh];
整数rsum,gsum,bsum,x,y,i,p,yp,yi,yw;
int vmin[]=新的int[Math.max(w,h)];
int divsum=(div+1)>>1;
divsum*=divsum;
int dv[]=新的int[256*divsum];
对于(i=0;i<256*divsum;i++){
dv[i]=(i/divsum);
}
yw=yi=0;
int[][]堆栈=新int[div][3];
int堆栈指针;
int stackstart;
国际[]先生;
国际苏格兰皇家银行;
int r1=半径+1;
国际路苏姆、古松、布松;
内特林松、金松、宾松;
对于(y=0;y16;
sir[1]=(p&0x00ff00)>>8;
sir[2]=(p&0x0000ff);
rbs=r1——数学绝对值(i);
rsum+=sir[0]*rbs;
gsum+=sir[1]*rbs;
bsum+=sir[2]*rbs;
如果(i>0){
rinsum+=sir[0];
ginsum+=sir[1];
binsum+=sir[2];
}否则{
routsum+=sir[0];
痛风+=爵士[1];
boutsum+=sir[2];
}
}
堆栈指针=半径;
对于(x=0;x>16;
sir[1]=(p&0x00ff00)>>8;
sir[2]=(p&0x0000ff);
rinsum+=sir[0];
ginsum+=sir[1];
binsum+=sir[2];
rsum+=rinsum;
gsum+=人参;
bsum+=binsum;
stackpointer=(stackpointer+1)%div;
sir=堆栈[(堆栈指针)%div];
routsum+=sir[0];
痛风+=爵士[1];
boutsum+=sir[2];
rinsum-=sir[0];
ginsum-=sir[1];
binsum-=sir[2];
易++;
}
yw+=w;
}
对于(x=0;x pix[yi]=(0xff000000&pix[yi])|(dv[rsum]您使用的构建工具版本是什么?buildToolsVersion“23.0.3”还有一个问题,您测试应用程序的设备和Android版本是什么?我建议您尝试两件事:1.在创建应用程序后尝试缓存“rs”和“theintrisic”。2.还尝试使用最新的构建工具(24.0.1)设备-MK Plug PC 809IV、Intel Plug PC和一些模拟器。都使用安卓版本4.4.4。您能解释一下缓存的帮助吗?考虑到测试设备大多是X86设备,我想这是X86 RenderScript支持库的一个缺陷。缓存可能无法解决问题,但可能有助于提高性能,因为RenderScript.create()和IntrinsicBlur.create()都很重。谢谢,伙计!!我陷入这个错误已经一天多了。这个代码片段很有帮助。
public static Bitmap fastblur(Bitmap sentBitmap) {
int radius = (int) BLUR_RADIUS;
int width = Math.round(sentBitmap.getWidth() * BITMAP_SCALE);
int height = Math.round(sentBitmap.getHeight() * BITMAP_SCALE);
sentBitmap = Bitmap.createScaledBitmap(sentBitmap, width, height, false);
Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);
if (radius < 1) {
return (null);
}
int w = bitmap.getWidth();
int h = bitmap.getHeight();
int[] pix = new int[w * h];
Log.e("pix", w + " " + h + " " + pix.length);
bitmap.getPixels(pix, 0, w, 0, 0, w, h);
int wm = w - 1;
int hm = h - 1;
int wh = w * h;
int div = radius + radius + 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 = radius + 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 = -radius; i <= radius; i++) {
p = pix[yi + Math.min(wm, Math.max(i, 0))];
sir = stack[i + radius];
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 = radius;
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 - radius + div;
sir = stack[stackstart % div];
routsum -= sir[0];
goutsum -= sir[1];
boutsum -= sir[2];
if (y == 0) {
vmin[x] = Math.min(x + radius + 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 = -radius * w;
for (i = -radius; i <= radius; i++) {
yi = Math.max(0, yp) + x;
sir = stack[i + radius];
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 = radius;
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 - radius + 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;
}
}
Log.e("pix", w + " " + h + " " + pix.length);
bitmap.setPixels(pix, 0, w, 0, 0, w, h);
return (bitmap);
}