Hi,

On Sun, May 1, 2011 at 3:35 AM, Luca Barbato <[email protected]> wrote:
> On 5/1/11 9:54 AM, aviad rozenhek wrote:
>>
>> currently, av_open_input_file() opens protocols without the
>> AVIO_FLAG_NONBLOCK flag.
>> I suggest that av_open_input_file() respect the AVFMT_FLAG_NONBLOCK flag
>> by
>> calling avio_open() with AVIO_FLAG_NONBLOCK flag
>> whenever AVFMT_FLAG_NONBLOCK  is set.
>>
>> specifically (from libavformat/utils.c) :
>>
>>     if (!fmt || !(fmt->flags&  AVFMT_NOFILE)) {
>>         /* if no file needed do not try to open one */
>> +       int flags = AVIO_FLAG_READ | (fmt->flags&  AVFMT_FLAG_NONBLOCK)?
>> AVIO_FLAG_NONBLOCK : 0;
>> -       if ((err=avio_open(&pb, filename, AVIO_FLAG_READ))<  0) {
>> +       if ((err=avio_open(&pb, filename, flags))<  0) {
>>             goto fail;
>>         }
>
> I like the idea.

We need a demuxer-supports-nonblock (or doesnotsupport-nonblock) flag
so we can turn it off for the demuxers not supporting it.

Ronald
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