On 20/01/14 12:31, Anton Khirnov wrote:
> 
> On Mon, 20 Jan 2014 11:25:42 +0100, Luca Barbato <[email protected]> wrote:
>> Sample-Id: 00001388-google
>> Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
>> CC: [email protected]
>> ---
>>  libavcodec/hevc.c | 4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/libavcodec/hevc.c b/libavcodec/hevc.c
>> index 5d520fa..bd547cb 100644
>> --- a/libavcodec/hevc.c
>> +++ b/libavcodec/hevc.c
>> @@ -1759,13 +1759,13 @@ static void hls_prediction_unit(HEVCContext *s, int 
>> x0, int y0,
>>  
>>      if (current_mv.pred_flag[0]) {
>>          ref0 = refPicList[0].ref[current_mv.ref_idx[0]];
>> -        if (!ref0)
>> +        if (!ref0 || !ref0->frame->data[0])
>>              return;
>>          hevc_await_progress(s, ref0, &current_mv.mv[0], y0, nPbH);
>>      }
>>      if (current_mv.pred_flag[1]) {
>>          ref1 = refPicList[1].ref[current_mv.ref_idx[1]];
>> -        if (!ref1)
>> +        if (!ref1 || !ref1->frame->data[0])
> 
> This doesn't look right either, empty frames shouldn't get into the ref list 
> at
> all.
> 
> So probably some additional checks are needed when the reference list is
> constructed (though find_ref_idx should only let valid frames through).

Probably.

lu
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