[FFmpeg-trac] #861(avformat:new): problem with ffio_limit

[FFmpeg]

#861: problem with ffio_limit
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             Reporter:  exobuzz      |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avformat
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by exobuzz):

 something like this would also fix it - I was thinking that the
 calculation "int64_t remaining= s->maxsize - avio_tell(s);" shouldn't be
 done anyway if maxsize is 0?

 diff --git a/libavformat/utils.c b/libavformat/utils.c
 index 7248f91..1629c32 100644
 --- a/libavformat/utils.c
 +++ b/libavformat/utils.c
 @@ -269,7 +269,7 @@ AVInputFormat *av_find_input_format(const char
 *short_name)

  int ffio_limit(AVIOContext *s, int size)
  {
 -    if(s->maxsize>=0){
 +    if(s->maxsize>0){
          int64_t remaining= s->maxsize - avio_tell(s);
          if(remaining < size){
              int64_t newsize= avio_size(s);

 or perhaps to check both maxsize and avio_size are greater than 0 ?

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/861#comment:2>
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