I call this method two consecutive times because I needed a blur radius of 40px, but the SDK limitation was only 25px, so I thought I would just blur it twice with 20px.
On Fri, May 23, 2014 at 1:18 PM, Harri Smatt <[email protected]> wrote: > Hi, > > How frequently do you call this method? I mean, you re-create both > RenderScript and IntrinsicBlur objects on every call. And I am wondering > how the underlying native implementation copes with this if the method is > called twice or more within short a period. > > -- > H > On May 20, 2014 10:08 PM, "littledot" <[email protected]> wrote: > >> I am implementing Gaussian blurring using the ScriptIntrinsicBlur class. >> However, I have faced an intermittent issue where sometimes >> ScriptIntrinsicBlur.create() throws RSRuntimeException: Internal error: >> Object id 0. >> >> Here is the most stacktrace that I can post: >> >> android.renderscript.RSRuntimeException: Internal error: Object id 0. >> >> >> at android.renderscript.BaseObj.getID(BaseObj.java:57) >> >> >> at android.renderscript.Script.setVar(Script.java:202) >> >> >> at >> android.renderscript.ScriptIntrinsicBlur.setRadius(ScriptIntrinsicBlur.java:80) >> >> >> at >> android.renderscript.ScriptIntrinsicBlur.create(ScriptIntrinsicBlur.java:54) >> >> >> The bitmap that is being blurred is usually around 300*300 ~ 400*400 >> pixels and the blurRadius is set to 20. >> >> private static Bitmap blurBitmap(Context context, Bitmap bm, float >> blurRadius) { >> if (context == null || bm == null || blurRadius < 0) { >> return null; >> } >> >> try { >> /* Make image width a multiple of 4. This is to avoid a bug >> in the >> * implementation of ScriptIntrinsicBlur that causes visual >> * artifacts Source: >> * https://plus.google.com/+RomanNurik/posts/TLkVQC3M6jW */ >> if (bm.getWidth() % 4 != 0) { >> bm = Bitmap.createBitmap(bm, 0, 0, bm.getWidth() - >> (bm.getWidth() % 4), bm.getHeight()); >> } >> >> final RenderScript rs = RenderScript.create(context); >> final Allocation input = Allocation.createFromBitmap(rs, bm, >> Allocation.MipmapControl.MIPMAP_NONE, >> >> Allocation.USAGE_SCRIPT); >> final Allocation output = Allocation.createTyped(rs, >> input.getType()); >> final ScriptIntrinsicBlur script = >> ScriptIntrinsicBlur.create(rs, Element.U8_4(rs)); >> >> script.setRadius(blurRadius); >> script.setInput(input); >> script.forEach(output); >> output.copyTo(bm); >> >> } catch (RSRuntimeException e) { >> /* Throws android.renderscript.RSRuntimeException: Internal >> error: >> * Object id 0. */ >> } >> return bm; >> } >> >> The exception is being thrown when create() is being called. I traced the >> ScriptIntrinsicBlur.create() method and it am guessing that my problem >> starts here: >> >> int id = rs.nScriptIntrinsicCreate(5, e.getID(rs)); >> ScriptIntrinsicBlur sib = new ScriptIntrinsicBlur(id, rs); >> sib.setRadius(5.f); >> >> I am guessing that the native method nScriptIntrinsicCreate() may be >> returning 0, which is passed to the constructor, then when setRadius() is >> called it does a check and throws the exception. My questions are: >> 1. What does nScriptIntrinsicCreate() do and what can cause >> nScriptIntrinsicCreate() to return 0? >> 2. How do you go about debugging native methods? >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Android Developers" group. >> To post to this group, send email to [email protected] >> To unsubscribe from this group, send email to >> [email protected] >> For more options, visit this group at >> http://groups.google.com/group/android-developers?hl=en >> --- >> You received this message because you are subscribed to the Google Groups >> "Android Developers" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> >> For more options, visit https://groups.google.com/d/optout. >> > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > --- > You received this message because you are subscribed to a topic in the > Google Groups "Android Developers" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/android-developers/kGxHq3bcBdc/unsubscribe > . > To unsubscribe from this group and all its topics, send an email to > [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- Thank you for your time. Yours truly, Sheng-Dean Chang 章聖典 ([email protected], [email protected]) -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
