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Better backgroundTask start/stopping using blocks to safely avoid referencing STKAudioPlayer

This commit is contained in:
Thong Nguyen 2014-02-15 17:04:52 +00:00
parent 0618027252
commit 9199785202
1 changed files with 17 additions and 17 deletions
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34
StreamingKit/StreamingKit/STKAudioPlayer.m
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@ -229,10 +229,8 @@ static AudioStreamBasicDescription canonicalAudioStreamBasicDescription;
AudioFileStreamID audioFileStream;
NSConditionLock* threadStartedLock;
NSConditionLock* threadFinishedCondLock;
#if TARGET_OS_IPHONE
UIBackgroundTaskIdentifier backgroundTaskId;
#endif
void(^stopBackBackgroundTaskBlock)();
int32_t seekVersion;
OSSpinLock seekLock;
@ -565,30 +563,32 @@ static void AudioFileStreamPacketsProc(void* clientData, UInt32 numberBytes, UIn
-(void) startSystemBackgroundTask
{
#if TARGET_OS_IPHONE
if (backgroundTaskId != UIBackgroundTaskInvalid)
{
pthread_mutex_unlock(&playerMutex);
return;
}
__block UIBackgroundTaskIdentifier backgroundTaskId = UIBackgroundTaskInvalid;
__block UIBackgroundTaskIdentifier identifier;
identifier = backgroundTaskId = [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:^
backgroundTaskId = [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:^
{
[[UIApplication sharedApplication] endBackgroundTask:backgroundTaskId];
backgroundTaskId = UIBackgroundTaskInvalid;
}];
stopBackBackgroundTaskBlock = [^
{
if (backgroundTaskId != UIBackgroundTaskInvalid)
{
[[UIApplication sharedApplication] endBackgroundTask:backgroundTaskId];
backgroundTaskId = UIBackgroundTaskInvalid;
}
} copy];
#endif
}
-(void) stopSystemBackgroundTask
{
#if TARGET_OS_IPHONE
if (backgroundTaskId != UIBackgroundTaskInvalid)
if (stopBackBackgroundTaskBlock != NULL)
{
[[UIApplication sharedApplication] endBackgroundTask:backgroundTaskId];
backgroundTaskId = UIBackgroundTaskInvalid;
stopBackBackgroundTaskBlock();
stopBackBackgroundTaskBlock = NULL;
}
#endif
}