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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