Måns Rullgård 5c5b1731b7 Maintain pointer to end of AVFormatContext.packet_buffer list ...

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

2008-08-06 22:17:38 +00:00

98 KiB

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