2014/10/16 上午 08:24:17
android Programming Glossary: skiaHow can I use BitmapRegionDecoder code in android 2.2.2 (Froyo)? http://stackoverflow.com/questions/10035169/how-can-i-use-bitmapregiondecoder-code-in-android-2-2-2-froyo mentioned BitmapRegionDecoder is based on external skia library. Yet it's may be a benefit. Let's examine original source.. to back port it as it should be possible to take a whole skia library from the Gingerbeard and compile it under Froyo as it.. froyo release and gingerbread mr4 release External skia library repository Header files are in include core and include..
Android: BitmapFactory.decodeStream() out of memory with a 400KB file with 2MB free heap http://stackoverflow.com/questions/11820266/android-bitmapfactory-decodestream-out-of-memory-with-a-400kb-file-with-2mb-f external 18312K 19336K paused 30ms 08 05 21 26 05.283 D skia 2319 decoder decode returned false The size of the file referenced..
Android: SkImageDecoder:: Factory returned null http://stackoverflow.com/questions/12006785/android-skimagedecoder-factory-returned-null 3197 MemoryCache maximum limit is 6MB 08 13 21 55 26.998 D skia 3197 SkImageDecoder Factory returned null android share improve..
http://stackoverflow.com/questions/15779669/android-how-to-warp-images pull K dd 0.000001f pull d 0.000001f android.util.Log.d skia index i dist d pull pull if pull 1 dst i 0 cx dst i 1 cy ..
Android: Problem/bug with ThreadSafeClientConnManager downloading images http://stackoverflow.com/questions/1630258/android-problem-bug-with-threadsafeclientconnmanager-downloading-images marc_aureli_27_29_no.jpg fetched in 146ms 13970 skia D decoder decode returned false A search for that error message..
Android: out of memory exception in Gallery http://stackoverflow.com/questions/3238388/android-out-of-memory-exception-in-gallery let us allocate 819840 bytes 07 13 08 38 21.277 DEBUG skia 2133 decoder decode returned false 07 13 08 38 21.287 WARN dalvikvm..
BitmapFactory.decodeByteArray() is returning NULL http://stackoverflow.com/questions/3338235/bitmapfactory-decodebytearray-is-returning-null get a debug statement in the ddms this is what I get D skia 14391 SkImageDecoder Factory returned null java android image..
BitmapFactory.decodeStream always returns null and skia decoder shows decode returned false http://stackoverflow.com/questions/3802820/bitmapfactory-decodestream-always-returns-null-and-skia-decoder-shows-decode-ret always returns null and skia decoder shows decode returned false test image here http images.plurk.com.. imageUrl.openStream Always getting this log DEBUG skia 1441 decoder decode returned false Any help Thanks. EDIT Those.. . But can see if open in a Browser. android image bitmap skia share improve this question Try this as a temporary workaround..
Android decoder->decode returned false for Bitmap download http://stackoverflow.com/questions/4339082/android-decoder-decode-returned-false-for-bitmap-download false for Bitmap download I've started getting a DEBUG skia xxxx decoder decode returned false issue on a few profile images..
java.lang.OutOfMemoryError: bitmap size exceeds VM budget http://stackoverflow.com/questions/4611822/java-lang-outofmemoryerror-bitmap-size-exceeds-vm-budget let us allocate 1550532 bytes 01 06 09 52 27.798 DEBUG skia 17473 decoder decode returned false 01 06 09 52 27.798 DEBUG..
Strange out of memory issue while loading an image to a Bitmap object http://stackoverflow.com/questions/477572/strange-out-of-memory-issue-while-loading-an-image-to-a-bitmap-object error when displaying an image 01 25 22 13 18.594 DEBUG skia 4204 xxxxxxxxxxx jpeg error 20 Improper call to JPEG library.. let us allocate 6291456 bytes 01 25 22 13 18.694 DEBUG skia 4204 xxxxxxxxxxxxxxxxxxxx allocPixelRef failed android image..
How do the pieces of Android's (2D) Canvas drawing pipeline fit together? http://stackoverflow.com/questions/5762727/how-do-the-pieces-of-androids-2d-canvas-drawing-pipeline-fit-together in here seems to be a pretty thin veneer on top of skia maybe there's some skia documentation that would be helpful... be a pretty thin veneer on top of skia maybe there's some skia documentation that would be helpful. The best thing I could.. here is the order they appear in the pipeline. android skia android canvas share improve this question Like Romain Guy..
external allocation too large for this process http://stackoverflow.com/questions/8250704/external-allocation-too-large-for-this-process external 1668K 20868K paused 18ms 11 23 16 33 15.906 D skia 9171 decoder decode returned false 11 23 16 33 15.906 D AndroidRuntime..
How to draw RTL text (Arabic) onto a Bitmap and have it ordered properly? http://stackoverflow.com/questions/1417503/how-to-draw-rtl-text-arabic-onto-a-bitmap-and-have-it-ordered-properly Canvas is practically a wrapper around the Canvas of Skia native graphics engine . Skia doesn't perform any BiDi reshaping.. wrapper around the Canvas of Skia native graphics engine . Skia doesn't perform any BiDi reshaping it simply draws sequences..
BitmapFactory OOM driving me nuts http://stackoverflow.com/questions/1955410/bitmapfactory-oom-driving-me-nuts data is allocated in the Native heap by the underlying Skia graphics library. Unfortunately while the definition of BitmapFactory.decode..... it returns null if the image data could not be decoded the Skia implementation or rather the JNI glue between the Java code.. or rather the JNI glue between the Java code and Skia logs the message you 胩e seeing VM won't let us allocate xxxx..
What does the filter parameter to createScaledBitmap do? http://stackoverflow.com/questions/2895065/what-does-the-filter-parameter-to-createscaledbitmap-do impression though I'm glad to be corrected that Android Skia does simple subsampling when downsizing without filtering so..
http://stackoverflow.com/questions/4579573/android-graphics-internals are two core pieces to Android graphics SurfaceFlinger and Skia. SurfaceFlinger is Android's compositor used by the window manager.. renders into its windows or surfaces using primarily Skia. Skia is Android's 2D graphics library. You can also use OpenGL.. renders into its windows or surfaces using primarily Skia. Skia is Android's 2D graphics library. You can also use OpenGL ES..
Android Paint: .measureText() vs .getTextBounds() http://stackoverflow.com/questions/7549182/android-paint-measuretext-vs-gettextbounds param checks both call function SkPaint measureText in Skia Lib part of Android but they both call different overloaded.. both call different overloaded form. Digging further into Skia I see that both calls result into same computation in same function.. called Glyph's AdvanceX value. I've discovered this in Skia sources in SkPaint.cpp So the outcome of the test is that measureText..
What does Bitmap#recycle() in Android Honeycomb actually DO? http://stackoverflow.com/questions/7852943/what-does-bitmaprecycle-in-android-honeycomb-actually-do data is allocated in the Native heap by the underlying Skia graphics library. Note that this may have changed in later Android.. via DDMS. But the native heap data is collected by the Skia GC which appears to be lazier it runs less frequently . That..
How can I use BitmapRegionDecoder code in android 2.2.2 (Froyo)? http://stackoverflow.com/questions/10035169/how-can-i-use-bitmapregiondecoder-code-in-android-2-2-2-froyo android ndk backport share improve this question As @hackbod mentioned BitmapRegionDecoder is based on external skia library. Yet it's may be a benefit. Let's examine original source BitmapRegionDecoder.java . Mostly defines wrappers around.. of wrappers around it. The good news is that we may not need to back port it as it should be possible to take a whole skia library from the Gingerbeard and compile it under Froyo as it is external and doesn't contain any new dependencies. P.S... code we need is located in following repositories on branches froyo release and gingerbread mr4 release External skia library repository Header files are in include core and include images Android framework base Java code graphics java android..
Android: BitmapFactory.decodeStream() out of memory with a 400KB file with 2MB free heap http://stackoverflow.com/questions/11820266/android-bitmapfactory-decodestream-out-of-memory-with-a-400kb-file-with-2mb-f D dalvikvm 2319 GC_FOR_MALLOC freed 0K 50 free 2710K 5379K external 18312K 19336K paused 30ms 08 05 21 26 05.283 D skia 2319 decoder decode returned false The size of the file referenced by imgFileName is reported to be 400K on Windows. So..
Android: SkImageDecoder:: Factory returned null http://stackoverflow.com/questions/12006785/android-skimagedecoder-factory-returned-null maximum limit is 6MB 08 13 21 55 26.228 I MemoryCache 3197 MemoryCache maximum limit is 6MB 08 13 21 55 26.998 D skia 3197 SkImageDecoder Factory returned null android share improve this question Maybe this can help inJustDecodeBounds..
http://stackoverflow.com/questions/15779669/android-how-to-warp-images dy cy y float dd dx dx dy dy float d FloatMath.sqrt dd float pull K dd 0.000001f pull d 0.000001f android.util.Log.d skia index i dist d pull pull if pull 1 dst i 0 cx dst i 1 cy else dst i 0 x dx pull dst i 1 y dy pull private int mLastWarpX..
Android: Problem/bug with ThreadSafeClientConnManager downloading images http://stackoverflow.com/questions/1630258/android-problem-bug-with-threadsafeclientconnmanager-downloading-images _images_ verticales a 0 1 0 2540 los_inmortales_la_trattoria marc_aureli_27_29_no.jpg fetched in 146ms 13970 skia D decoder decode returned false A search for that error message didn't provide much useful results. Anyone an idea what..
Android: out of memory exception in Gallery http://stackoverflow.com/questions/3238388/android-out-of-memory-exception-in-gallery large for this process. 07 13 08 38 21.266 ERROR 2133 VM won't let us allocate 819840 bytes 07 13 08 38 21.277 DEBUG skia 2133 decoder decode returned false 07 13 08 38 21.287 WARN dalvikvm 2133 threadid 25 thread exiting with uncaught exception..
BitmapFactory.decodeByteArray() is returning NULL http://stackoverflow.com/questions/3338235/bitmapfactory-decodebytearray-is-returning-null also tried changing the preview format to JPEG type. I even get a debug statement in the ddms this is what I get D skia 14391 SkImageDecoder Factory returned null java android image format camera share improve this question Alright hopefully..
BitmapFactory.decodeStream always returns null and skia decoder shows decode returned false http://stackoverflow.com/questions/3802820/bitmapfactory-decodestream-always-returns-null-and-skia-decoder-shows-decode-ret always returns null and skia decoder shows decode returned false test image here http images.plurk.com tn_4134189_bf54fe8e270ce41240d534b5133884ee.gif.. Bitmap image BitmapFactory.decodeStream imageUrl.openStream Always getting this log DEBUG skia 1441 decoder decode returned false Any help Thanks. EDIT Those images failed to be decoded are also can not be shown on.. failed to be decoded are also can not be shown on a WebView . But can see if open in a Browser. android image bitmap skia share improve this question Try this as a temporary workaround First add the following class public static class PlurkInputStream..
Android decoder->decode returned false for Bitmap download http://stackoverflow.com/questions/4339082/android-decoder-decode-returned-false-for-bitmap-download decoder decode returned false for Bitmap download I've started getting a DEBUG skia xxxx decoder decode returned false issue on a few profile images from Facebook that I use in ImageViews. Most work perfectly..
java.lang.OutOfMemoryError: bitmap size exceeds VM budget http://stackoverflow.com/questions/4611822/java-lang-outofmemoryerror-bitmap-size-exceeds-vm-budget Bitmap Size 9564KB 01 06 09 52 27.787 ERROR 17473 VM won't let us allocate 1550532 bytes 01 06 09 52 27.798 DEBUG skia 17473 decoder decode returned false 01 06 09 52 27.798 DEBUG AndroidRuntime 17473 Shutting down VM 01 06 09 52 27.798 WARN..
Strange out of memory issue while loading an image to a Bitmap object http://stackoverflow.com/questions/477572/strange-out-of-memory-issue-while-loading-an-image-to-a-bitmap-object 3943 ERROR thread attach failed I also have a new error when displaying an image 01 25 22 13 18.594 DEBUG skia 4204 xxxxxxxxxxx jpeg error 20 Improper call to JPEG library in state d 01 25 22 13 18.604 INFO System.out 4204 resolveUri.. large for this process. 01 25 22 13 18.694 ERROR 4204 VM won't let us allocate 6291456 bytes 01 25 22 13 18.694 DEBUG skia 4204 xxxxxxxxxxxxxxxxxxxx allocPixelRef failed android image memory bitmap share improve this question The Android Training..
How do the pieces of Android's (2D) Canvas drawing pipeline fit together? http://stackoverflow.com/questions/5762727/how-do-the-pieces-of-androids-2d-canvas-drawing-pipeline-fit-together it occurred to me that since much the stuff I'm interested in here seems to be a pretty thin veneer on top of skia maybe there's some skia documentation that would be helpful. The best thing I could find is the documentation for SkPaint.. me that since much the stuff I'm interested in here seems to be a pretty thin veneer on top of skia maybe there's some skia documentation that would be helpful. The best thing I could find is the documentation for SkPaint which says There are 6.. explicitly but I'm guessing that the order of the effects here is the order they appear in the pipeline. android skia android canvas share improve this question Like Romain Guy said This question is difficult to answer on StackOverflow..
external allocation too large for this process http://stackoverflow.com/questions/8250704/external-allocation-too-large-for-this-process D dalvikvm 9171 GC_FOR_MALLOC freed 1K 49 free 2792K 5447K external 1668K 20868K paused 18ms 11 23 16 33 15.906 D skia 9171 decoder decode returned false 11 23 16 33 15.906 D AndroidRuntime 9171 Shutting down VM 11 23 16 33 15.910 W dalvikvm..
How to draw RTL text (Arabic) onto a Bitmap and have it ordered properly? http://stackoverflow.com/questions/1417503/how-to-draw-rtl-text-arabic-onto-a-bitmap-and-have-it-ordered-properly android right to left bidi share improve this question Canvas is practically a wrapper around the Canvas of Skia native graphics engine . Skia doesn't perform any BiDi reshaping it simply draws sequences of glyphs. TextView on the other.. share improve this question Canvas is practically a wrapper around the Canvas of Skia native graphics engine . Skia doesn't perform any BiDi reshaping it simply draws sequences of glyphs. TextView on the other way uses a load of Android's..
BitmapFactory OOM driving me nuts http://stackoverflow.com/questions/1955410/bitmapfactory-oom-driving-me-nuts a reference to it in the VM heap which is small but the actual data is allocated in the Native heap by the underlying Skia graphics library. Unfortunately while the definition of BitmapFactory.decode... says that it returns null if the image data.. while the definition of BitmapFactory.decode... says that it returns null if the image data could not be decoded the Skia implementation or rather the JNI glue between the Java code and Skia logs the message you 胩e seeing VM won't let us allocate.. null if the image data could not be decoded the Skia implementation or rather the JNI glue between the Java code and Skia logs the message you 胩e seeing VM won't let us allocate xxxx bytes and then throws an OutOfMemory exception with the misleading..
What does the filter parameter to createScaledBitmap do? http://stackoverflow.com/questions/2895065/what-does-the-filter-parameter-to-createscaledbitmap-do images and area averaging when downsizing images. I get the impression though I'm glad to be corrected that Android Skia does simple subsampling when downsizing without filtering so you are likely to get better results from filtering even when..
http://stackoverflow.com/questions/4579573/android-graphics-internals framebuffer skia share improve this question There are two core pieces to Android graphics SurfaceFlinger and Skia. SurfaceFlinger is Android's compositor used by the window manager to create and display windows actually called surfaces... T Mobile G1 or hardware overlays on the Xoom. Each application renders into its windows or surfaces using primarily Skia. Skia is Android's 2D graphics library. You can also use OpenGL ES 1.x and 2.0 to render into a surface. Android doesn't.. G1 or hardware overlays on the Xoom. Each application renders into its windows or surfaces using primarily Skia. Skia is Android's 2D graphics library. You can also use OpenGL ES 1.x and 2.0 to render into a surface. Android doesn't use DirectFB..
Android Paint: .measureText() vs .getTextBounds() http://stackoverflow.com/questions/7549182/android-paint-measuretext-vs-gettextbounds Now your study checks where these methods differ. After some param checks both call function SkPaint measureText in Skia Lib part of Android but they both call different overloaded form. Digging further into Skia I see that both calls result.. SkPaint measureText in Skia Lib part of Android but they both call different overloaded form. Digging further into Skia I see that both calls result into same computation in same function only return result differently. To answer your question.. by this value on both left and right. This is something called Glyph's AdvanceX value. I've discovered this in Skia sources in SkPaint.cpp So the outcome of the test is that measureText adds some advance value to the text on both sides..
What does Bitmap#recycle() in Android Honeycomb actually DO? http://stackoverflow.com/questions/7852943/what-does-bitmaprecycle-in-android-honeycomb-actually-do a reference to it in the VM heap which is small but the actual data is allocated in the Native heap by the underlying Skia graphics library. Note that this may have changed in later Android levels but is true for 2.1 and 2.2 When you do a recycle.. is collected by the Davlik GC and you can see that happening via DDMS. But the native heap data is collected by the Skia GC which appears to be lazier it runs less frequently . That means that even with rigorous recycle s it is possible to get..
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