[WFD] WFD 连接做connect和disconnect，手机概率性的没有反应以及重启

[WFD] WFD 连接做connect和disconnect，手机概率性的没有反应以及重启

[DESCRIPTION]

连续操作手机，做WFD connect和disconnect 的动作，手机会概率发生没有反应以及重

启的问题。

从log 发生来看，WindowManager 这边会卡在RemoteDisplay.nativeDispose()。具体

的CallStack 如下。

"WindowManager" prio=5 tid=12 NATIVE

| group="main" sCount=1 dsCount=0 obj=0x420f6530 self=0x5ce662a8

| sysTid=710 nice=-4 sched=0/0 cgrp=apps handle=1558603520

| state=S schedstat=( 11487599370 9157963355 38440 ) utm=877 stm=271

core=2

#00 pc 000247e8 /system/lib/libc.so (__ioctl+8)

#01 pc 00038248 /system/lib/libc.so (ioctl+28)

#02 pc 0001d3a9 /system/lib/libbinder.so

(android::IPCThreadState::talkWithDriver(bool)+140)

#03 pc 0001d8c3 /system/lib/libbinder.so

(android::IPCThreadState::waitForResponse(android:

arcel*, int*)+42)

#04 pc 0001dacb /system/lib/libbinder.so

(android::IPCThreadState::transact(int, unsigned int, android:

arcel

const&, android:

arcel*, unsigned int)+118)

#05 pc 00019797 /system/lib/libbinder.so

(android::BpBinder::transact(unsigned int, android:

arcel const&,

android:

arcel*, unsigned int)+36)

#06 pc 00064b35 /system/lib/libmedia.so

#07 pc 00088863 /system/lib/libandroid_runtime.so

#08 pc 0001e74c /system/lib/libdvm.so (dvmPlatformInvoke+112)

#09 pc 0004fa91 /system/lib/libdvm.so (dvmCallJNIMethod(unsigned int

const*, JValue*, Method const*, Thread*)+484)

#10 pc 00027b28 /system/lib/libdvm.so

#11 pc 0002f100 /system/lib/libdvm.so (dvmMterpStd(Thread*)+76)

#12 pc 0002c5e4 /system/lib/libdvm.so (dvmInterpret(Thread*, Method

const*, JValue*)+188)

#13 pc 00062e6d /system/lib/libdvm.so (dvmCallMethodV(Thread*, Method

const*, Object*, bool, JValue*, std::__va_list)+340)

#14 pc 00062e91 /system/lib/libdvm.so (dvmCallMethod(Thread*, Method

const*, Object*, JValue*, ...)+20)

#15 pc 000574a5 /system/lib/libdvm.so

#16 pc 0000d600 /system/lib/libc.so (__thread_entry+72)

at android.media.RemoteDisplay.nativeDispose(Native Method)

at android.media.RemoteDisplay.dispose(RemoteDisplay.JAVA:137)

at android.media.RemoteDisplay.dispose(RemoteDisplay.java:113)

at

com.android.server.display.WIFIDisplayController.updateConnection(WifiDisp

layController.java:1042)

at

com.android.server.display.WifiDisplayController.disconnect(WifiDisplayCon

troller.java:1005)

at

com.android.server.display.WifiDisplayController.requestDisconnect(WifiDis

playController.java:608)

at

com.android.server.display.WifiDisplayAdapter$7.run(WifiDisplayAdapter.jav

a:247)

at android.os.Handler.handleCallback(Handler.java:808)

at android.os.Handler.dispatchMessage(Handler.java:103)

at android.os.Looper.loop(Looper.java:193)

at android.os.HandlerThread.run(HandlerThread.java:61)

从具体分析log来看，有两种case 会导致这种状况：

Ø Case 1： WFD disconnect 操作中，Video Source没办法stop成功。

在WifiDisplaySource stop过程中，一直没有红色的log，表示video source一直没有被

stopped。

07-21 10:09:07.028 151 3010 I MediaPuller: MediaPuller(audio/raw)

stopping.

07-21 10:09:07.029 151 3001 I MediaPuller: MediaPuller(video/raw)

stopping.

07-21 10:09:07.103 151 3010 I MediaPuller: MediaPuller(audio/raw) stopped.

MediaPuller: MediaPuller(video/raw) stopped.

Ø Case 2： Udp Session 创建失败。

从main log中来看，一直打出如下的error log。

01-01 01:13:05.891 157 11398 E NetworkSession: Error in

createClientOrServer:-101

01-01 01:13:05.898 157 11398 E NetworkSession: Error in

createClientOrServer:-101

01-01 01:13:05.903 157 11398 E NetworkSession: Error in

createClientOrServer:-101

01-01 01:13:05.913 157 11398 E NetworkSession: Error in

createClientOrServer:-101

01-01 01:13:05.923 157 11398 E NetworkSession: Error in

createClientOrServer:-101

01-01 01:13:05.928 157 11398 E NetworkSession: Error in

createClientOrServer:-101

01-01 01:13:05.931 157 11398 E NetworkSession: Error in

createClientOrServer:-101

01-01 01:13:05.934 157 11398 E NetworkSession: Error in

createClientOrServer:-101

01-01 01:13:05.938 157 11398 E NetworkSession: Error in

createClientOrServer:-101

01-01 01:13:05.948 157 11398 E NetworkSession: Error in

createClientOrServer:-101

01-01 01:13:05.951 157 11398 E NetworkSession: Error in

createClientOrServer:-101

[SOLUTION]

Ø 若是Case 1，请麻烦做如下修改（修改的code以红色为标注）。

1) alps/mediatek/frameworks-ext/av/media/libstagefright/wifi-displaymediatek/

source/RepeaterSource.cpp

status_t RepeaterSource::start(MetaData *params) {

CHECK(!mStarted);

//add start

mStop=false;

//add end

..........................

}

status_t RepeaterSource::stop() {

CHECK(mStarted);

ALOGI("stopping");

mStop = true;

if (mBuffer != NULL) {

ALOGV("releasing mbuf %p", mBuffer);

mBuffer->release();

mBuffer = NULL;

}

tatus_t err = mSource->stop();

if (mLooper != NULL) {

mLooper->stop();

mLooper.clear();

mReflector.clear();

}

ALOGI("stopped");

mStarted = false;

return err;

}

void RepeaterSource:

nMessageReceived(const sp<AMessage> &msg) {

switch (msg->what()) {

case kWhatRead:

{

MediaBuffer *buffer;

//add start

if (true == mStop) {

break;

}

//add end

#ifdef MTB_SUPPORT

ATRACE_BEGIN("Repeater, KWhatRead");

#endif

#ifndef ANDROID_DEFAULT_CODE

int64_t startUs = ALooper::GetNowUs();

#endif

status_t err = mSource->read(&buffer);

//add start

if (true==mStop) {

if (mBuffer != NULL) {

mBuffer->release();

mBuffer = NULL;

}

if(buffer!=NULL) {

buffer->release();

}

break;

}

//add end

........................

}

2) alps/mediatek/frameworks-ext/av/media/libstagefright/wifi-displaymediatek/

source/RepeaterSource.h

struct RepeaterSource : public MediaSource {

..............

//add start

bool mStop;

//add end

....................

}

Ø 若是case 2 ，请麻烦做如下修改 (修改的code 以红色为标注)。

\alps\mediatek\frameworks-ext\av\media\libstagefright\wifi-displaymediatek\

rtp\RTPSender.cpp

status_t RTPSender::initAsync(

const char *remoteHost,

int32_t remoteRTPPort,

TransportMode rtpMode,

int32_t remoteRTCPPort,

TransportMode rtcpMode,

int32_t *outLocalRTPPort) {

...........................

將

for (;;) {

修改成

int count =0;

status_t err;

for(;count <6;count ++){

............................

//將err 放在for 循環外面

//status_t err;

}

//add that start

if(count >5)

{

notifyError(err);

return err;

}

//add that end

if(rtpMode == TRANSPORT_UDP){

mRTPConnected =true;

}

.....................

}