• Måns Rullgård's avatar
    Maintain pointer to end of AVFormatContext.packet_buffer list · 5c5b1731
    Måns Rullgård authored
    This changes add_to_pktbuf() to maintain a pointer to the last entry
    in the list, avoiding a linear walk-through on each call.  Before this
    change, add_to_pktbuf() could take a significant amount of time (10%
    of total decoding time), even with input files of several minutes.
    After the change, the time spent in this function is barely measurable
    with oprofile.
    
    Originally committed as revision 14654 to svn://svn.ffmpeg.org/ffmpeg/trunk
    5c5b1731
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