Hello,
I would like to have more info about lock manager provided by libav*.
1. Which funtions if libav* use it and when is it recommended to use?
2. Is the following implementation correct (it uses pthread)?
int myLockManager(void** mutex, AVLockOp op)
{
pthread_mutex_t** pmutex = (pthread_mutex_t**)mutex;
switch (op)
{
case AV_LOCK_CREATE:
*pmutex = (pthread_mutex_t*)av_malloc(sizeof(pthread_mutex_t));
pthread_mutex_init(*pmutex, NULL);
break;
case AV_LOCK_OBTAIN:
pthread_mutex_lock(*pmutex);
break;
case AV_LOCK_RELEASE:
pthread_mutex_unlock(*pmutex);
break;
case AV_LOCK_DESTROY:
pthread_mutex_destroy(*pmutex);
av_free(*pmutex);
break;
}
return 0;
}
...somewhere in main...
av_lockmgr_register(myLockManager);
Thanks,
M
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