You need to implement locking mechanism like this:
static int
lockmgr(void **mtx, enum AVLockOp op)
{
switch(op) {
case AV_LOCK_CREATE:
*mtx = malloc(sizeof(pthread_mutex_t));
if(!*mtx)
return 1;
return !!pthread_mutex_init(*mtx, NULL);
case AV_LOCK_OBTAIN:
return !!pthread_mutex_lock(*mtx);
case AV_LOCK_RELEASE:
return !!pthread_mutex_unlock(*mtx);
case AV_LOCK_DESTROY:
pthread_mutex_destroy(*mtx);
free(*mtx);
return 0;
}
return 1;
}
// During application startup.
if(av_lockmgr_register(lockmgr)) {
// Failure
}
// During application shutdown.
av_lockmgr_register(NULL);
On Sun, Sep 27, 2009 at 2:38 AM, Michael Conrad <mcon...@intellitree.com>wrote:
> On Fri, 25 Sep 2009 08:58:48 -0400, <zcc...@libero.it> wrote:
>
>> Hi to all,
>> I'm realizing an application to displaying more than one MPEG4 network
>> streaming. I used ffmpeg library to decode the streaming, but if I try to
>> decode two streams in the same time, it doesn't work fine.
>> Is it possible to use ffmpeg libraries to make this kind of application ?
>>
>
> It works fine if you use only one thread. In order to have multiple
> threads each decoding their own stream, you need to synchronize access to
> several functions. One important one is "avcodec_open". Search this list
> to find more details.
>
> --
> Michael Conrad
> IntelliTree Solutions llc.
> 513-552-6362
> mcon...@intellitree.com
> _______________________________________________
> libav-user mailing list
> libav-user@mplayerhq.hu
> https://lists.mplayerhq.hu/mailman/listinfo/libav-user
>
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