Well, there seems to be a bug when specifying a different Format in
the Options of BitmapFactory.decodeStream(). I specified ARGB4444 and
it didn't complain. On 2.0 it worked, on the G1/MyTouch it didn't.
Maybe i'll file a bug about this.
On 2 Feb., 15:46, Mario Zechner <badlogicga...@gmail.com> wrote:
> Hi,
>
> I have a larger 512x512 32-bit ARGB Bitmap loaded from a PNG in my
> application. I traverse each pixel in this bitmap as follows:
>
> int height = bitmap.getHeight()-1;
> for( int y = 0; y < bitmap.getHeight(); y++ )
> {
> for( int x = 0; x < bitmap.getWidth(); x++ )
> {
> int pixel = bitmap.getPixel( x, y);
> collisionMap[x][height-y] = pixel != -1 ?(byte)BACKGROUND_PIXEL:
> 0;
> }
>
> }
>
> I check each pixel in the bitmap for a specific color value and set a
> byte in a corresponding 2D array that has the same dimensions as the
> image. This works perfectly fine on my droid, on my hero as well as on
> the emulator. I send the app containing this code to some other people
> that have a g1 and a mytouch and there this few lines fail horribly
> with a segfault:
>
> 02-01 17:47:25.532 I/ActivityManager( 74): Process
> android.process.media (pid 3920) has died.
> 02-01 17:47:25.622 I/DEBUG ( 48): *** *** *** *** *** *** *** ***
> *** *** *** *** *** *** *** ***
> 02-01 17:47:25.622 I/DEBUG ( 48): Build fingerprint: 'tmobile/opal/
> sapphire/sapphire:1.6/DRC92/15632:user/ota-rel-keys,release-keys'
> 02-01 17:47:25.622 I/DEBUG ( 48): pid: 4033, tid: 4039 >>>
> com.badlogic.doodleescape <<<
> 02-01 17:47:25.622 I/DEBUG ( 48): signal 7 (SIGBUS), fault addr
> 00000000
> 02-01 17:47:25.622 I/DEBUG ( 48): r0 44527d84 r1 4622700a r2
> 00000001 r3 00000000
> 02-01 17:47:25.622 I/DEBUG ( 48): r4 00000001 r5 4622700a r6
> 44527d84 r7 4104be78
> 02-01 17:47:25.622 I/DEBUG ( 48): r8 44527d9c r9 4104be6c 10
> 4104be5c fp 00000001
> 02-01 17:47:25.622 I/DEBUG ( 48): ip 4622700a sp 44527d70 lr
> ad346c1f pc ad3469a0 cpsr 00000030
> 02-01 17:47:26.242 I/DEBUG ( 48): #00 pc 000469a0 /
> system/lib/libandroid_runtime.so
> 02-01 17:47:26.242 I/DEBUG ( 48): #01 pc 00046c1c /
> system/lib/libandroid_runtime.so
> 02-01 17:47:26.242 I/DEBUG ( 48): #02 pc 0000e434 /
> system/lib/libdvm.so
> 02-01 17:47:26.252 I/DEBUG ( 48): stack:
> 02-01 17:47:26.252 I/DEBUG ( 48): 44527d30 ad083e1c /system/
> lib/libdvm.so
> 02-01 17:47:26.252 I/DEBUG ( 48): 44527d34 ad0159f4 /system/
> lib/libdvm.so
> 02-01 17:47:26.252 I/DEBUG ( 48): 44527d38 0000032c
> 02-01 17:47:26.252 I/DEBUG ( 48): 44527d3c 0000002a
> 02-01 17:47:26.252 I/DEBUG ( 48): 44527d40 00000054
> 02-01 17:47:26.252 I/DEBUG ( 48): 44527d44 ad083e1c /system/
> lib/libdvm.so
> 02-01 17:47:26.252 I/DEBUG ( 48): 44527d48 00000064
> 02-01 17:47:26.262 I/DEBUG ( 48): 44527d4c 0000001a
> 02-01 17:47:26.262 I/DEBUG ( 48): 44527d50 00000000
> 02-01 17:47:26.262 I/DEBUG ( 48): 44527d54 4104be78
> 02-01 17:47:26.262 I/DEBUG ( 48): 44527d58 00000001
> 02-01 17:47:26.262 I/DEBUG ( 48): 44527d5c 41c3a728 /system/
> framework/framework.odex
> 02-01 17:47:26.262 I/DEBUG ( 48): 44527d60 00000003
> 02-01 17:47:26.262 I/DEBUG ( 48): 44527d64 41c3a728 /system/
> framework/framework.odex
> 02-01 17:47:26.262 I/DEBUG ( 48): 44527d68 df002777
> 02-01 17:47:26.262 I/DEBUG ( 48): 44527d6c e3a070ad
> 02-01 17:47:26.262 I/DEBUG ( 48): #00 44527d70 ad346999 /system/
> lib/libandroid_runtime.so
> 02-01 17:47:26.262 I/DEBUG ( 48): 44527d74 001aae00 [heap]
> 02-01 17:47:26.262 I/DEBUG ( 48): 44527d78 00000001
> 02-01 17:47:26.262 I/DEBUG ( 48): 44527d7c ad346c1f /system/
> lib/libandroid_runtime.so
> 02-01 17:47:26.262 I/DEBUG ( 48): #01 44527d80 00000027
> 02-01 17:47:26.262 I/DEBUG ( 48): 44527d84 ffffffff
> 02-01 17:47:26.262 I/DEBUG ( 48): 44527d88 44527dc0
> 02-01 17:47:26.262 I/DEBUG ( 48): 44527d8c 00000004
> 02-01 17:47:26.262 I/DEBUG ( 48): 44527d90 ad346bed /system/
> lib/libandroid_runtime.so
> 02-01 17:47:26.262 I/DEBUG ( 48): 44527d94 ad00e438 /system/
> lib/libdvm.so
> 02-01 17:47:28.122 I/ActivityManager( 74): Process
> com.badlogic.doodleescape (pid 4033) has died.
>
> The bitmap is loaded successfully otherwise i'd get a
> NullPointerException when requesting its height in the first line of
> code. It seems that Bitmap.getPixel() fails with a segfault.
>
> I have not the slightest clou of what is happening here. The really
> frightening part is that it works on the droid,hero and emulator but
> not on g1 hardware. I'd really appreciate any pointers.
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