Thank you for all of your responses, it works like a charm! :)
static int ff_lockmgr(void **mutex, enum AVLockOp op)
{
pthread_mutex_t** pmutex = (pthread_mutex_t**) mutex;
switch (op) {
case AV_LOCK_CREATE:
*pmutex = (pthread_mutex_t*) 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);
free(*pmutex);
break;
}
return 0;
}
--
Karoly Horvath
http://softwaredevel.wikispaces.com/
On Thu, Nov 10, 2011 at 10:13 AM, Hendrik Leppkes <[email protected]>wrote:
> Hi,
>
> On Thu, Nov 10, 2011 at 2:07 AM, Karthik Kailash
> <[email protected]> wrote:
> > Is there an example of how to use av_lockmgr_register()? I am not 100%
> > clear upon reading the documentation of what the callback function that I
> > pass in is supposed to do.
>
> This is my implementation of the lockmgr using the Windows Critical
> Sections. It may not apply to you, but it does give you an idea what
> to do.
> Error checking was left out for brevity.
>
> static int ff_lockmgr(void **mutex, enum AVLockOp op)
> {
> CRITICAL_SECTION **critSec = (CRITICAL_SECTION **)mutex;
> switch (op) {
> case AV_LOCK_CREATE:
> *critSec = new CRITICAL_SECTION();
> InitializeCriticalSection(*critSec);
> break;
> case AV_LOCK_OBTAIN:
> EnterCriticalSection(*critSec);
> break;
> case AV_LOCK_RELEASE:
> LeaveCriticalSection(*critSec);
> break;
> case AV_LOCK_DESTROY:
> DeleteCriticalSection(*critSec);
> delete *critSec;
> break;
> }
> return 0;
> }
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>
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