我在android 8.1.0中遇到opensl es崩溃。
相关代码：
TEResult SLESAudioEngine::release(TEMsg *pMsg) {
TEResult ret;
SLuint32 playState = 0;
(*bqPlayerPlay)->GetPlayState(bqPlayerPlay, &playState);
LOGE(LOG_TAG, "%s, %d, %d", __FUNCTION__, __LINE__, playState);
if (bqPlayerPlay != nullptr) {
SLresult slRet = (*bqPlayerPlay)->SetPlayState(bqPlayerPlay, SL_PLAYSTATE_STOPPED);
if (slRet != SL_RESULT_SUCCESS) {
LOGE(LOG_TAG, "%s,%d SetPlayState failed %d", __FUNCTION__, __LINE__, ret);
return slRet;
}
bqPlayerPlay = nullptr;
}
if (bqPlayerBufferQueue != nullptr) {
SLresult slRet = (*bqPlayerBufferQueue)->Clear(bqPlayerBufferQueue);
if (slRet != SL_RESULT_SUCCESS) {
LOGE(LOG_TAG, "GetInterface BufferQueueItf failed %d", ret);
return slRet;
}
bqPlayerBufferQueue = nullptr;
}
if (bqPlayerObject != nullptr) {
(*bqPlayerObject)->Destroy(bqPlayerObject);
bqPlayerObject = nullptr;
}
if (outputMixObject != NULL) {
(*outputMixObject)->Destroy(outputMixObject);
outputMixObject = NULL;
}
LOGE(LOG_TAG, "%s %d Destroy", __FUNCTION__, __LINE__);
// destroy engine object, and invalidate all associated interfaces
if (engineObject != NULL) {
(*engineObject)->Destroy(engineObject);
engineObject = NULL;
}
return ret;
}
相关日志：
11-05 15:17:58.270 F/DEBUG ( 5887): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
11-05 15:17:58.270 F/DEBUG ( 5887): Build fingerprint: 'vivo/PD1806/PD1806:8.1.0/OPM1.171019.019/compil08312141:user/release-keys'
11-05 15:17:58.270 F/DEBUG ( 5887): Revision: '0'
11-05 15:17:58.270 F/DEBUG ( 5887): ABI: 'arm'
11-05 15:17:58.270 F/DEBUG ( 5887): pid: 5609, tid: 5835, name: jerikc.demo.app >>> com.jerikc.demo.app <<<
11-05 15:17:58.270 F/DEBUG ( 5887): signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0
11-05 15:17:58.270 F/DEBUG ( 5887): Cause: null pointer dereference
11-05 15:17:58.270 F/DEBUG ( 5887): r0 fffffffe r1 00000000 r2 c164d407 r3 f18e1e30
11-05 15:17:58.270 F/DEBUG ( 5887): r4 00002282 r5 f18e1da9 r6 f3e66dfc r7 00000000
11-05 15:17:58.270 F/DEBUG ( 5887): r8 f3a66704 r9 000015e9 sl d148808d fp ced2aa80
11-05 15:17:58.270 F/DEBUG ( 5887): ip 00000001 sp c9b95550 lr f18e1e07 pc f3dd0482 cpsr 880f0030
11-05 15:17:58.310 F/DEBUG ( 5887):
11-05 15:17:58.310 F/DEBUG ( 5887): backtrace:
11-05 15:17:58.310 F/DEBUG ( 5887): #00 pc 000bc482 /system/lib/libandroid_runtime.so (android::proxy_cleanup(void const*, void*, void*)+65)
11-05 15:17:58.310 F/DEBUG ( 5887): #01 pc 00040787 /system/lib/libbinder.so (android::BpBinder::ObjectManager::kill()+30)
11-05 15:17:58.310 F/DEBUG ( 5887): #02 pc 00040745 /system/lib/libbinder.so (android::BpBinder::ObjectManager::~ObjectManager()+4)
11-05 15:17:58.310 F/DEBUG ( 5887): #03 pc 000410b9 /system/lib/libbinder.so (android::BpBinder::~BpBinder()+124)
11-05 15:17:58.310 F/DEBUG ( 5887): #04 pc 00041125 /system/lib/libbinder.so (android::BpBinder::~BpBinder()+12)
11-05 15:17:58.310 F/DEBUG ( 5887): #05 pc 00040547 /system/lib/libbinder.so (android::BpRefBase::~BpRefBase()+46)
11-05 15:17:58.310 F/DEBUG ( 5887): #06 pc 00004633 /system/lib/libaudiomanager.so (_ZTv0_n12_N7android14BpAudioManagerD0Ev+22)
11-05 15:17:58.310 F/DEBUG ( 5887): #07 pc 0000dc5f /system/lib/libwilhelm.so (android::sp<android::TrackPlayerBase>::clear()+18)
11-05 15:17:58.310 F/DEBUG ( 5887): #08 pc 00016a2f /system/lib/libwilhelm.so (CEngine_Destroy(void*)+198)
11-05 15:17:58.310 F/DEBUG ( 5887): #09 pc 0001b975 /system/lib/libwilhelm.so (IObject_Destroy(SLObjectItf_ const* const*)+204)
11-05 15:17:58.310 F/DEBUG ( 5887): #10 pc 001c197f /data/app/com.jerikc.demo.app-4ZSXR9PUHNOeJT-UudwsOQ==/lib/arm/libaudioenginedemo.so (SLESAudioEngine::release(TEMsg*)+486)
11-05 15:17:59.130 V/AudioFlinger( 1002): 5609 died, releasing its sessions
最佳答案
在将opensl代码移动到一个单独的线程之后，也遇到了同样的问题。幸运的是，Android OS sources给出了一个快速的答案：
static void proxy_cleanup(const void* id, void* obj, void* cleanupCookie)
{
android_atomic_dec(&gNumProxyRefs);
JNIEnv* env = javavm_to_jnienv((JavaVM*)cleanupCookie);
env->DeleteGlobalRef((jobject)obj);
}
长话短说，opensles引擎现在由一个java对象支持，因此它需要一个有效的javavm引用才能运行。这基本上意味着，它应该是从一个jvm连接的线程创建的（我不确定是否会被破坏，但我猜传递
cleanupCookie是有原因的）。