[FFmpeg-trac] #1026(avformat:new): libavformat::av_read_frame does not return waiting for udp packets when interrupted

[FFmpeg]

#1026: libavformat::av_read_frame does not return waiting for udp packets when
interrupted
-------------------------------------+-------------------------------------
             Reporter:  asif         |                     Type:  defect
               Status:  new          |                 Priority:  important
            Component:  avformat     |                  Version:  0.10
             Keywords:               |               Blocked By:
  deadlock,interrupt                 |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Steps to reproduce:
 1. Start receiving udp stream.
 2. Stop the incoming udp stream transmitter.
 3. udp.c::udp_read will wait for udp.c::circular_buffer_task at
 pthread_cond_wait(&s->cond, &s->mutex);
 4. Interrupt udp.c::circular_buffer_task by returning 1 from
 interrupt_callback. Circular buffer will exit and signal udp_read as well.
 But the return value is EINTR
 5. udp.c::udp_read will return to avio.c::retry_transfer_wrapper. This
 function is ignoring the error and will call udp_read again.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1026>
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