There is no such plan at the moment. On Wed, Jun 8, 2011 at 10:17 AM, Erik R <ejwrobert...@gmail.com> wrote: > I'm working on a simple image manipulation app that requires opening > bitmaps at full resolution, which of course results in OutOfMemory > issues. I know that the short answer is to simply use less memory via > BitmapFactory's inSampleSize Option to downsample the bitmap, but for > this app I really would like to retain the full resolution for > editing. One solution I have been investigating is loading the bitmap > entirely on the native heap, after learning that the memory limitation > is only imposed within the Dalvik VM heap. A look into the Android > source code revealed that this is already the case... BitmapFactory > uses native methods to load a bitmap on the native heap, while > maintaining a reference to it on the VM heap. The issue then is that > it appears the native memory used by the bitmap is actually counted > against the available VM memory, when it really isn't there. A look > into the stock Camera and Gallery apps' source revealed that they get > around this by using an additional BitmapFactory Option, > inNativeAlloc. I was able to find this field in the Java code for > BitmapFactory: > > 196 * Normally bitmap allocations count against the dalvik > heap, which > 197 * means they help trigger GCs when a lot have been > allocated. However, > 198 * in rare cases, the caller may want to allocate the > bitmap outside of > 199 * that heap. To request that, set inNativeAlloc to true. > In these > 200 * rare instances, it is solely up to the caller to > ensure that OOM is > 201 * managed explicitly by calling bitmap.recycle() as soon > as such a > 202 * bitmap is no longer needed. > 203 * > 204 * @hide pending API council approval > 205 */ > 206 public boolean inNativeAlloc; > > Are there any plans to "unhide" this field anytime soon? > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to android-developers@googlegroups.com > To unsubscribe from this group, send email to > android-developers+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en >
-- Romain Guy Android framework engineer romain...@android.com Note: please don't send private questions to me, as I don't have time to provide private support. All such questions should be posted on public forums, where I and others can see and answer them -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
