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我在两台测试设备上遇到问题 - Samsung Galaxy J5、Android 6.0.1、Kernel 3.10.49-11903637、Build MMB29M.J510FNXXU2AQG3 GPU Adreno 306 和 Nexus 4 -GPU Adreno 320。我正在尝试计算位图，通过对位图进行两次过滤。使用原始位图的采样大小，大小小于 64x64，以提高性能。相同的代码在三星 Galaxy S6、索尼 Xperia Z3、三星 Galaxy Tab 10.1 (2016)、华为 P10 上运行良好。尝试更改输入参数，使用不同的图像，不同的系数，但在 J5 上它总是崩溃。

更新：在其他设备上拍摄的照片，旋转为纵向时，成功通过（高度大于宽度）。但是，在同一设备上拍摄的照片，无论我如何旋转它们都会崩溃。

val options = BitmapFactory.Options()
options.inJustDecodeBounds = true
BitmapFactory.decodeFile(imagePath, options)

val imageSize = SizeT(options.outWidth, options.outHeight)
val imageScale = imageSize.scaleToFitInSize( SizeT( 64, 64) )
val imageScaledSize = imageSize.scale(imageScale.toDouble())
options.inJustDecodeBounds = false
options.inSampleSize = ImageUtils.calculateInSampleSize(imageSize, imageScaledSize, 1.0)

val sourceBitmap = BitmapFactory.decodeFile(imagePath, options)

var sobelScript: ScriptC_sobel? = null
var inputAllocation: Allocation? = null
var outputAllocation: Allocation? = null
var intermediateAllocation: Allocation? = null
var convolve3x3: ScriptIntrinsicConvolve3x3? = null
var renderScript: RenderScript? = null

val imageWidth = sourceBitmap.width
val imageHeight = sourceBitmap.height

renderScript = RenderScript.create(ApplicationContext.ApplicationContext())
inputAllocation = Allocation.createFromBitmap(renderScript, sourceBitmap)
val typeInBuilder = Type.Builder(renderScript, Element.F32_4(renderScript)).setX( imageWidth ).setY( imageHeight   )

// Allocation where to store the sum result (for output purposes)
val coefficientsGx = floatArrayOf(-1f, 0f, 1f, -2f, 0f, 2f, -1f, 0f, 1f)
val coefficientsGy = floatArrayOf(-1f, -2f, -1f, 0f, 0f, 0f, 1f, 2f, 1f)

intermediateAllocation = Allocation.createTyped(renderScript, typeInBuilder.create())

convolve3x3 = ScriptIntrinsicConvolve3x3.create(renderScript, Element.F32_4(renderScript))
convolve3x3.setInput(inputAllocation)
convolve3x3.setCoefficients(coefficientsGx)
convolve3x3.forEach(intermediateAllocation)

在最后一行，程序因本机错误而崩溃：

? D/NetworkController.MobileSignalController(0/2147483643): onSignalStrengthsChanged signalStrength=SignalStrength: 26 99 -120 -160 -120 -1 -1 99 2147483647 2147483647 2147483647 -1 2147483647 0x4 gsm|lte level=4
2302-2671/? D/NetworkController.MobileSignalController(0/2147483643): getMobileIconGroup(): 0
16440-17400/ A/libc: Fatal signal 7 (SIGBUS), code 1, fault addr 0x76f458b4 in tid 17400 (AsyncTask #4)
16440-17398/ A/libc: Fatal signal 7 (SIGBUS), code 1, fault addr 0x76f456d4 in tid 17398 (AsyncTask #4)
16440-17398/ I/libc: Another thread contacted debuggerd first; not contacting debuggerd.
16440-17399/ A/libc: Fatal signal 7 (SIGBUS), code 1, fault addr 0x76f45404 in tid 17399 (AsyncTask #4)
16440-17399/ I/libc: Another thread contacted debuggerd first; not contacting debuggerd.
16440-17396/ A/libc: Fatal signal 7 (SIGBUS) in tid 17396 (AsyncTask #4)
16440-17396/I/libc: Another thread contacted debuggerd first; not contacting debuggerd.
400-400/? A/DEBUG: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
400-400/? A/DEBUG: Build fingerprint: 'samsung/j5xnltexx/j5xnlte:6.0.1/MMB29M/J510FNXXU2AQG3:user/release-keys'
400-400/? A/DEBUG: Revision: '4'
400-400/? A/DEBUG: ABI: 'arm'
400-400/? A/DEBUG: pid: 16440, tid: 17400, name: AsyncTask #4  >>> com.test.development <<<
400-400/? A/DEBUG: signal 7 (SIGBUS), code 1 (BUS_ADRALN), fault addr 0x76f458b4
400-400/? A/DEBUG:     r0 0000003b  r1 00000000  r2 b8ceb4a0  r3 76f458b4
400-400/? A/DEBUG:     r4 76f458b4  r5 9b68a7f8  r6 b8ceb4a0  r7 00000000
400-400/? A/DEBUG:     r8 0000003c  r9 76f459a4  sl 76f458b4  fp 76f45a94
400-400/? A/DEBUG:     ip b8cb3c14  sp 9b68a7b0  lr 00000001  pc 9cff66d8  cpsr 200f0030
400-400/? A/DEBUG: backtrace:
400-400/? A/DEBUG:     #00 pc 0002d6d8  /system/lib/libRSCpuRef.so
400-400/? A/DEBUG:     #01 pc 0002d68b  /system/lib/libRSCpuRef.so (_ZN7android12renderscript32RsdCpuScriptIntrinsicConvolve3x38kernelF4EPK24RsExpandKernelDriverInfojjj+122)
400-400/? A/DEBUG:     #02 pc 0001f1f5  /system/lib/libRSCpuRef.so
400-400/? A/DEBUG:     #03 pc 0001eb67  /system/lib/libRSCpuRef.so (_ZN7android12renderscript19RsdCpuReferenceImpl16helperThreadProcEPv+138)
400-400/? A/DEBUG:     #04 pc 00041813  /system/lib/libc.so (_ZL15__pthread_startPv+30)
400-400/? A/DEBUG:     #05 pc 00019315  /system/lib/libc.so (__start_thread+6)

com.test.development A/libc: Fatal signal 7 (SIGBUS) in tid 3368 (AsyncTask #4)
? E/audit: type=1701 msg=audit(1509449660.557:282): auid=4294967295 uid=10133 gid=10133 ses=4294967295 subj=u:r:untrusted_app:s0:c512,c768 pid=3371 comm=4173796E635461736B202334 reason="memory violation" sig=7
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1 回答 1

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因此，通过将 Script.LaunchOptions 传递给 convolve3x3.forEach 函数，问题得到了解决，限制了内核将运行的交集。将其设置在分配范围内就可以了。

renderScript = RenderScript.create(ApplicationContext.ApplicationContext())
inputAllocation = Allocation.createFromBitmap(renderScript, sourceBitmap)
val typeInBuilder = Type.Builder(renderScript, Element.F32_4(renderScript)).setX( imageWidth ).setY( imageHeight  )
val launchOptions = Script.LaunchOptions()
launchOptions.setX( 0, imageWidth-1 )
launchOptions.setY( 0, imageHeight-1)
launchOptions.setZ( 0, 1 )

// Allocation where to store the sum result (for output purposes)
val coefficientsGx = floatArrayOf(-1f, 0f, 1f, -2f, 0f, 2f, -1f, 0f, 1f)
val coefficientsGy = floatArrayOf(-1f, -2f, -1f, 0f, 0f, 0f, 1f, 2f, 1f)

intermediateAllocation = Allocation.createTyped(renderScript, typeInBuilder.create())

convolve3x3 = ScriptIntrinsicConvolve3x3.create(renderScript, Element.F32_4(renderScript))

convolve3x3.setInput(inputAllocation)
convolve3x3.setCoefficients(coefficientsGx)
convolve3x3.forEach(intermediateAllocation, launchOptions)
于 2017-10-31T13:41:38.760 回答